/*- * Copyright (c) 2020-2026 The FreeBSD Foundation * Copyright (c) 2020-2025 Bjoern A. Zeeb * * This software was developed by Björn Zeeb under sponsorship from * the FreeBSD Foundation. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * Public functions are called linuxkpi_*(). * Internal (static) functions are called lkpi_*(). * * The internal structures holding metadata over public structures are also * called lkpi_xxx (usually with a member at the end called xxx). * Note: we do not replicate the structure names but the general variable names * for these (e.g., struct hw -> struct lkpi_hw, struct sta -> struct lkpi_sta). * There are macros to access one from the other. * We call the internal versions lxxx (e.g., hw -> lhw, sta -> lsta). */ /* * TODO: * - lots :) * - HW_CRYPTO: we need a "keystore" and an ordered list for suspend/resume. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define LINUXKPI_NET80211 #include #include #include #include "linux_80211.h" /* #define LKPI_80211_USE_SCANLIST */ /* #define LKPI_80211_BGSCAN */ #define LKPI_80211_WME #define LKPI_80211_HW_CRYPTO #define LKPI_80211_HT #define LKPI_80211_VHT #if defined(LKPI_80211_VHT) && !defined(LKPI_80211_HT) #define LKPI_80211_HT #endif #if defined(LKPI_80211_HT) && !defined(LKPI_80211_HW_CRYPTO) #define LKPI_80211_HW_CRYPTO #endif static MALLOC_DEFINE(M_LKPI80211, "lkpi80211", "LinuxKPI 80211 compat"); /* XXX-BZ really want this and others in queue.h */ #define TAILQ_ELEM_INIT(elm, field) do { \ (elm)->field.tqe_next = NULL; \ (elm)->field.tqe_prev = NULL; \ } while (0) /* -------------------------------------------------------------------------- */ SYSCTL_DECL(_compat_linuxkpi); SYSCTL_NODE(_compat_linuxkpi, OID_AUTO, 80211, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "LinuxKPI 802.11 compatibility layer"); static int lkpi_suspend_type = 1; SYSCTL_INT(_compat_linuxkpi_80211, OID_AUTO, suspend_type, CTLFLAG_RW, &lkpi_suspend_type, 0, "LinuxKPI 802.11 suspend type bitmask (0=off, 1=net80211, 2=wowlan"); static bool lkpi_order_scanlist = false; SYSCTL_BOOL(_compat_linuxkpi_80211, OID_AUTO, order_scanlist, CTLFLAG_RW, &lkpi_order_scanlist, 0, "Enable LinuxKPI 802.11 scan list shuffeling"); #if defined(LKPI_80211_HW_CRYPTO) static bool lkpi_hwcrypto = false; SYSCTL_BOOL(_compat_linuxkpi_80211, OID_AUTO, hw_crypto, CTLFLAG_RDTUN, &lkpi_hwcrypto, 0, "Enable LinuxKPI 802.11 hardware crypto offload"); static bool lkpi_hwcrypto_tkip = false; SYSCTL_BOOL(_compat_linuxkpi_80211, OID_AUTO, tkip, CTLFLAG_RDTUN, &lkpi_hwcrypto_tkip, 0, "Enable LinuxKPI 802.11 TKIP crypto offload"); #endif /* Keep public for as long as header files are using it too. */ int linuxkpi_debug_80211; #ifdef LINUXKPI_DEBUG_80211 SYSCTL_INT(_compat_linuxkpi_80211, OID_AUTO, debug, CTLFLAG_RWTUN, &linuxkpi_debug_80211, 0, "LinuxKPI 802.11 debug level"); #define UNIMPLEMENTED if (linuxkpi_debug_80211 & D80211_TODO) \ printf("XXX-TODO %s:%d: UNIMPLEMENTED\n", __func__, __LINE__) #define TRACEOK(_fmt, ...) if (linuxkpi_debug_80211 & D80211_TRACEOK) \ printf("%s:%d: TRACEPOINT " _fmt "\n", __func__, __LINE__, ##__VA_ARGS__) #else #define UNIMPLEMENTED do { } while (0) #define TRACEOK(...) do { } while (0) #endif /* #define PREP_TX_INFO_DURATION (IEEE80211_TRANS_WAIT * 1000) */ #ifndef PREP_TX_INFO_DURATION #define PREP_TX_INFO_DURATION 0 /* Let the driver do its thing. */ #endif /* This is DSAP | SSAP | CTRL | ProtoID/OrgCode{3}. */ const uint8_t rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; /* IEEE 802.11-05/0257r1 */ const uint8_t bridge_tunnel_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 }; /* IEEE 802.11e Table 20i-UP-to-AC mappings. */ static const uint8_t ieee80211e_up_to_ac[] = { IEEE80211_AC_BE, IEEE80211_AC_BK, IEEE80211_AC_BK, IEEE80211_AC_BE, IEEE80211_AC_VI, IEEE80211_AC_VI, IEEE80211_AC_VO, IEEE80211_AC_VO, #if 0 IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */ #endif }; const struct cfg80211_ops linuxkpi_mac80211cfgops = { /* * XXX TODO need a "glue layer" to link cfg80211 ops to * mac80211 and to the driver or net80211. * Can we pass some on 1:1? Need to compare the (*f)(). */ }; #if 0 static struct lkpi_sta *lkpi_find_lsta_by_ni(struct lkpi_vif *, struct ieee80211_node *); #endif static void lkpi_sw_scan_task(void *, int); static void lkpi_80211_txq_tx_one(struct lkpi_sta *, struct mbuf *); static void lkpi_80211_txq_task(void *, int); static void lkpi_80211_lhw_rxq_task(void *, int); static void lkpi_ieee80211_free_skb_mbuf(void *); #ifdef LKPI_80211_WME static int lkpi_wme_update(struct lkpi_hw *, struct ieee80211vap *, bool); #endif static int lkpi_80211_update_chandef(struct ieee80211_hw *, struct ieee80211_chanctx_conf *); static void lkpi_ieee80211_wake_queues_locked(struct ieee80211_hw *); static const char * lkpi_rate_info_bw_to_str(enum rate_info_bw bw) { switch (bw) { case RATE_INFO_BW_20: return ("20"); break; case RATE_INFO_BW_5: return ("5"); break; case RATE_INFO_BW_10: return ("10"); break; case RATE_INFO_BW_40: return ("40"); break; case RATE_INFO_BW_80: return ("80"); break; case RATE_INFO_BW_160: return ("160"); break; case RATE_INFO_BW_HE_RU: IMPROVE("nl80211_he_ru_alloc"); return ("HE_RU"); break; case RATE_INFO_BW_320: return ("320"); break; case RATE_INFO_BW_EHT_RU: IMPROVE("nl80211_eht_ru_alloc"); return ("EHT_RU"); break; default: return ("?"); break; } } static void lkpi_nl80211_sta_info_to_str(struct sbuf *s, const char *prefix, const uint64_t flags) { int bit, i; sbuf_printf(s, "%s %#010jx", prefix, flags); i = 0; for (bit = 0; bit < BITS_PER_TYPE(flags); bit++) { if ((flags & BIT_ULL(bit)) == 0) continue; #define EXPAND_CASE(_flag) \ case NL80211_STA_INFO_ ## _flag: \ sbuf_printf(s, "%c%s", (i == 0) ? '<' : ',', #_flag); \ i++; \ break; switch (bit) { EXPAND_CASE(BEACON_RX) EXPAND_CASE(BEACON_SIGNAL_AVG) EXPAND_CASE(BSS_PARAM) EXPAND_CASE(CHAIN_SIGNAL) EXPAND_CASE(CHAIN_SIGNAL_AVG) EXPAND_CASE(CONNECTED_TIME) EXPAND_CASE(INACTIVE_TIME) EXPAND_CASE(SIGNAL) EXPAND_CASE(SIGNAL_AVG) EXPAND_CASE(STA_FLAGS) EXPAND_CASE(RX_BITRATE) EXPAND_CASE(RX_PACKETS) EXPAND_CASE(RX_BYTES) EXPAND_CASE(RX_DROP_MISC) EXPAND_CASE(TX_BITRATE) EXPAND_CASE(TX_PACKETS) EXPAND_CASE(TX_BYTES) EXPAND_CASE(TX_BYTES64) EXPAND_CASE(RX_BYTES64) EXPAND_CASE(TX_FAILED) EXPAND_CASE(TX_RETRIES) EXPAND_CASE(RX_DURATION) EXPAND_CASE(TX_DURATION) EXPAND_CASE(ACK_SIGNAL) EXPAND_CASE(ACK_SIGNAL_AVG) default: sbuf_printf(s, "%c?%d", (i == 0) ? '<' : ',', bit); break; } } #undef EXPAND_CASE if (i > 0) sbuf_printf(s, ">"); sbuf_printf(s, "\n"); } static void lkpi_80211_dump_lvif_stas(struct lkpi_vif *lvif, struct sbuf *s, bool dump_queues) { struct lkpi_hw *lhw; struct ieee80211_hw *hw; struct ieee80211vap *vap; struct ieee80211_vif *vif; struct lkpi_sta *lsta; struct ieee80211_sta *sta; struct station_info sinfo; int error; uint8_t tid; vif = LVIF_TO_VIF(lvif); vap = LVIF_TO_VAP(lvif); lhw = vap->iv_ic->ic_softc; hw = LHW_TO_HW(lhw); wiphy_lock(hw->wiphy); list_for_each_entry(lsta, &lvif->lsta_list, lsta_list) { sta = LSTA_TO_STA(lsta); sbuf_putc(s, '\n'); sbuf_printf(s, "lsta %p sta %p added_to_drv %d\n", lsta, sta, lsta->added_to_drv); memset(&sinfo, 0, sizeof(sinfo)); error = lkpi_80211_mo_sta_statistics(hw, vif, sta, &sinfo); if (error == EEXIST) /* Not added to driver. */ continue; if (error == ENOTSUPP) { sbuf_printf(s, " sta_statistics not supported\n"); continue; } if (error != 0) { sbuf_printf(s, " sta_statistics failed: %d\n", error); continue; } /* If no RX_BITRATE is reported, try to fill it in from the lsta sinfo. */ if ((sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) == 0 && (lsta->sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) != 0) { memcpy(&sinfo.rxrate, &lsta->sinfo.rxrate, sizeof(sinfo.rxrate)); sinfo.filled |= BIT_ULL(NL80211_STA_INFO_RX_BITRATE); } /* If no CHAIN_SIGNAL is reported, try to fill it in from the lsta sinfo. */ if ((sinfo.filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) == 0 && (lsta->sinfo.filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) != 0) { sinfo.chains = lsta->sinfo.chains; memcpy(sinfo.chain_signal, lsta->sinfo.chain_signal, sizeof(sinfo.chain_signal)); sinfo.filled |= BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL); } lkpi_nl80211_sta_info_to_str(s, " nl80211_sta_info (valid fields)", sinfo.filled); sbuf_printf(s, " connected_time %u inactive_time %u\n", sinfo.connected_time, sinfo.inactive_time); sbuf_printf(s, " rx_bytes %ju rx_packets %u rx_dropped_misc %u\n", (uintmax_t)sinfo.rx_bytes, sinfo.rx_packets, sinfo.rx_dropped_misc); sbuf_printf(s, " rx_duration %ju rx_beacon %u rx_beacon_signal_avg %d\n", (uintmax_t)sinfo.rx_duration, sinfo.rx_beacon, (int8_t)sinfo.rx_beacon_signal_avg); sbuf_printf(s, " tx_bytes %ju tx_packets %u tx_failed %u\n", (uintmax_t)sinfo.tx_bytes, sinfo.tx_packets, sinfo.tx_failed); sbuf_printf(s, " tx_duration %ju tx_retries %u\n", (uintmax_t)sinfo.tx_duration, sinfo.tx_retries); sbuf_printf(s, " signal %d signal_avg %d ack_signal %d avg_ack_signal %d\n", sinfo.signal, sinfo.signal_avg, sinfo.ack_signal, sinfo.avg_ack_signal); sbuf_printf(s, " generation %d assoc_req_ies_len %zu chains %#04x\n", sinfo.generation, sinfo.assoc_req_ies_len, sinfo.chains); for (int i = 0; i < nitems(sinfo.chain_signal) && i < IEEE80211_MAX_CHAINS; i++) { if (!(sinfo.chains & BIT(i))) continue; sbuf_printf(s, " chain[%d] signal %d signal_avg %d\n", i, (int8_t)sinfo.chain_signal[i], (int8_t)sinfo.chain_signal_avg[i]); } /* assoc_req_ies, bss_param, sta_flags */ sbuf_printf(s, " rxrate: flags %b bw %u(%s) legacy %u kbit/s mcs %u nss %u\n", sinfo.rxrate.flags, CFG80211_RATE_INFO_FLAGS_BITS, sinfo.rxrate.bw, lkpi_rate_info_bw_to_str(sinfo.rxrate.bw), sinfo.rxrate.legacy * 100, sinfo.rxrate.mcs, sinfo.rxrate.nss); sbuf_printf(s, " he_dcm %u he_gi %u he_ru_alloc %u eht_gi %u\n", sinfo.rxrate.he_dcm, sinfo.rxrate.he_gi, sinfo.rxrate.he_ru_alloc, sinfo.rxrate.eht_gi); sbuf_printf(s, " txrate: flags %b bw %u(%s) legacy %u kbit/s mcs %u nss %u\n", sinfo.txrate.flags, CFG80211_RATE_INFO_FLAGS_BITS, sinfo.txrate.bw, lkpi_rate_info_bw_to_str(sinfo.txrate.bw), sinfo.txrate.legacy * 100, sinfo.txrate.mcs, sinfo.txrate.nss); sbuf_printf(s, " he_dcm %u he_gi %u he_ru_alloc %u eht_gi %u\n", sinfo.txrate.he_dcm, sinfo.txrate.he_gi, sinfo.txrate.he_ru_alloc, sinfo.txrate.eht_gi); if (!dump_queues) continue; /* Dump queue information. */ sbuf_printf(s, " Queue information:\n"); sbuf_printf(s, " frms direct tx %ju\n", lsta->frms_tx); for (tid = 0; tid <= IEEE80211_NUM_TIDS; tid++) { struct lkpi_txq *ltxq; if (sta->txq[tid] == NULL) { sbuf_printf(s, " tid %-2u NOQ\n", tid); continue; } ltxq = TXQ_TO_LTXQ(sta->txq[tid]); #ifdef __notyet__ sbuf_printf(s, " tid %-2u flags: %b " "txq_generation %u skbq len %d\n", tid, ltxq->flags, LKPI_TXQ_FLAGS_BITS, ltxq->txq_generation, skb_queue_len_lockless(<xq->skbq)); #else sbuf_printf(s, " tid %-2u " "txq_generation %u skbq len %d\n", tid, ltxq->txq_generation, skb_queue_len_lockless(<xq->skbq)); #endif sbuf_printf(s, " frms_enqueued %ju frms_dequeued %ju " "frms_tx %ju\n", ltxq->frms_enqueued, ltxq->frms_dequeued, ltxq->frms_tx); } } wiphy_unlock(hw->wiphy); } static int lkpi_80211_dump_stas(SYSCTL_HANDLER_ARGS) { struct lkpi_vif *lvif; struct sbuf s; if (req->newptr) return (EPERM); lvif = (struct lkpi_vif *)arg1; sbuf_new_for_sysctl(&s, NULL, 1024, req); lkpi_80211_dump_lvif_stas(lvif, &s, false); sbuf_finish(&s); sbuf_delete(&s); return (0); } static int lkpi_80211_dump_sta_queues(SYSCTL_HANDLER_ARGS) { struct lkpi_vif *lvif; struct sbuf s; if (req->newptr) return (EPERM); lvif = (struct lkpi_vif *)arg1; sbuf_new_for_sysctl(&s, NULL, 1024, req); lkpi_80211_dump_lvif_stas(lvif, &s, true); sbuf_finish(&s); sbuf_delete(&s); return (0); } static enum ieee80211_sta_rx_bandwidth lkpi_cw_to_rx_bw(enum nl80211_chan_width cw) { switch (cw) { case NL80211_CHAN_WIDTH_320: return (IEEE80211_STA_RX_BW_320); case NL80211_CHAN_WIDTH_160: case NL80211_CHAN_WIDTH_80P80: return (IEEE80211_STA_RX_BW_160); case NL80211_CHAN_WIDTH_80: return (IEEE80211_STA_RX_BW_80); case NL80211_CHAN_WIDTH_40: return (IEEE80211_STA_RX_BW_40); case NL80211_CHAN_WIDTH_20: case NL80211_CHAN_WIDTH_20_NOHT: return (IEEE80211_STA_RX_BW_20); case NL80211_CHAN_WIDTH_5: case NL80211_CHAN_WIDTH_10: /* Unsupported input. */ return (IEEE80211_STA_RX_BW_20); } } static enum nl80211_chan_width lkpi_rx_bw_to_cw(enum ieee80211_sta_rx_bandwidth rx_bw) { switch (rx_bw) { case IEEE80211_STA_RX_BW_20: return (NL80211_CHAN_WIDTH_20); /* _NOHT */ case IEEE80211_STA_RX_BW_40: return (NL80211_CHAN_WIDTH_40); case IEEE80211_STA_RX_BW_80: return (NL80211_CHAN_WIDTH_80); case IEEE80211_STA_RX_BW_160: return (NL80211_CHAN_WIDTH_160); /* 80P80 */ case IEEE80211_STA_RX_BW_320: return (NL80211_CHAN_WIDTH_320); } } static void lkpi_sync_chanctx_cw_from_rx_bw(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta) { struct ieee80211_chanctx_conf *chanctx_conf; enum ieee80211_sta_rx_bandwidth old_bw; uint32_t changed; chanctx_conf = rcu_dereference_protected(vif->bss_conf.chanctx_conf, lockdep_is_held(&hw->wiphy->mtx)); if (chanctx_conf == NULL) return; old_bw = lkpi_cw_to_rx_bw(chanctx_conf->def.width); if (old_bw == sta->deflink.bandwidth) return; chanctx_conf->def.width = lkpi_rx_bw_to_cw(sta->deflink.bandwidth); if (chanctx_conf->def.width == NL80211_CHAN_WIDTH_20 && !sta->deflink.ht_cap.ht_supported) chanctx_conf->def.width = NL80211_CHAN_WIDTH_20_NOHT; chanctx_conf->min_def = chanctx_conf->def; vif->bss_conf.chanreq.oper.width = chanctx_conf->def.width; changed = IEEE80211_CHANCTX_CHANGE_MIN_WIDTH; changed |= IEEE80211_CHANCTX_CHANGE_WIDTH; lkpi_80211_mo_change_chanctx(hw, chanctx_conf, changed); } #if defined(LKPI_80211_HT) static void lkpi_sta_sync_ht_from_ni(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta, struct ieee80211_node *ni) { struct ieee80211vap *vap; uint8_t *ie; struct ieee80211_ht_cap *htcap; struct ieee80211_sta_ht_cap *ht_cap, *sta_ht_cap; enum nl80211_band band; int i, rx_nss; if ((ni->ni_flags & IEEE80211_NODE_HT) == 0) { sta->deflink.ht_cap.ht_supported = false; return; } sta->deflink.ht_cap.ht_supported = true; /* htcap->ampdu_params_info */ vap = ni->ni_vap; sta->deflink.ht_cap.ampdu_density = _IEEE80211_MASKSHIFT(ni->ni_htparam, IEEE80211_HTCAP_MPDUDENSITY); if (sta->deflink.ht_cap.ampdu_density > vap->iv_ampdu_density) sta->deflink.ht_cap.ampdu_density = vap->iv_ampdu_density; sta->deflink.ht_cap.ampdu_factor = _IEEE80211_MASKSHIFT(ni->ni_htparam, IEEE80211_HTCAP_MAXRXAMPDU); if (sta->deflink.ht_cap.ampdu_factor > vap->iv_ampdu_rxmax) sta->deflink.ht_cap.ampdu_factor = vap->iv_ampdu_rxmax; ie = ni->ni_ies.htcap_ie; KASSERT(ie != NULL, ("%s: HT but no htcap_ie on ni %p\n", __func__, ni)); if (ie[0] == IEEE80211_ELEMID_VENDOR) ie += 4; ie += 2; htcap = (struct ieee80211_ht_cap *)ie; sta->deflink.ht_cap.cap = htcap->cap_info; sta->deflink.ht_cap.mcs = htcap->mcs; /* * 802.11n-2009 20.6 Parameters for HT MCSs gives the mandatory/ * optional MCS for Nss=1..4. We need to check the first four * MCS sets from the Rx MCS Bitmask; then there is MCS 32 and * MCS33.. is UEQM. */ band = vif->bss_conf.chanctx_conf->def.chan->band; ht_cap = &hw->wiphy->bands[band]->ht_cap; sta_ht_cap = &sta->deflink.ht_cap; rx_nss = 0; for (i = 0; i < 4; i++) { TRACEOK("HT rx_mask[%d] sta %#04x & hw %#04x", i, sta_ht_cap->mcs.rx_mask[i], ht_cap->mcs.rx_mask[i]); sta_ht_cap->mcs.rx_mask[i] = sta_ht_cap->mcs.rx_mask[i] & ht_cap->mcs.rx_mask[i]; /* XXX-BZ masking unequal modulation? */ if (sta_ht_cap->mcs.rx_mask[i] != 0) rx_nss++; } if (rx_nss > 0) { TRACEOK("HT rx_nss = max(%d, %d)", rx_nss, sta->deflink.rx_nss); sta->deflink.rx_nss = MAX(rx_nss, sta->deflink.rx_nss); } else { sta->deflink.ht_cap.ht_supported = false; return; } if ((sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) != 0 && IEEE80211_IS_CHAN_HT40(ni->ni_chan)) sta->deflink.bandwidth = IEEE80211_STA_RX_BW_40; else sta->deflink.bandwidth = IEEE80211_STA_RX_BW_20; IMPROVE("sta->wme"); if (sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_MAX_AMSDU) sta->deflink.agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_7935; else sta->deflink.agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_3839; sta->deflink.agg.max_rc_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_BA; #ifdef __handled_by_driver__ /* iwlwifi only? actually unused? */ for (i = 0; i < nitems(sta.deflink.agg.max_tid_amsdu_len); i++) { sta->deflink.agg.max_tid_amsdu_len[j] = ; } #endif } #endif #if defined(LKPI_80211_VHT) static void lkpi_sta_sync_vht_from_ni(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta, struct ieee80211_node *ni) { struct ieee80211_sta_vht_cap *vht_cap, *sta_vht_cap;; enum ieee80211_sta_rx_bandwidth bw; enum nl80211_band band; uint32_t width; int rx_nss; uint16_t rx_map, tx_map; if ((ni->ni_flags & IEEE80211_NODE_VHT) == 0 || !IEEE80211_IS_CHAN_VHT_5GHZ(ni->ni_chan)) { sta->deflink.vht_cap.vht_supported = false; return; } sta->deflink.vht_cap.vht_supported = true; sta->deflink.vht_cap.cap = ni->ni_vhtcap; sta->deflink.vht_cap.vht_mcs = ni->ni_vht_mcsinfo; /* * If VHT20/40 are selected do not update the bandwidth * from HT but stya on VHT. */ if (ni->ni_vht_chanwidth == IEEE80211_VHT_CHANWIDTH_USE_HT) goto skip_bw; bw = sta->deflink.bandwidth; width = (sta->deflink.vht_cap.cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK); switch (width) { /* Deprecated. */ case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ: case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ: bw = IEEE80211_STA_RX_BW_160; break; default: /* Check if we do support 160Mhz somehow after all. */ if ((sta->deflink.vht_cap.cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) != 0) bw = IEEE80211_STA_RX_BW_160; else bw = IEEE80211_STA_RX_BW_80; } /* * While we can set what is possibly supported we also need to be * on a channel which supports that bandwidth; e.g., we can support * VHT160 but the AP only does VHT80. * Further ni_chan will also have filtered out what we disabled * by configuration. * Once net80211 channel selection is fixed for 802.11-2020 and * VHT160 we can possibly spare ourselves the above. */ if (bw == IEEE80211_STA_RX_BW_160 && !IEEE80211_IS_CHAN_VHT160(ni->ni_chan) && !IEEE80211_IS_CHAN_VHT80P80(ni->ni_chan)) bw = IEEE80211_STA_RX_BW_80; if (bw == IEEE80211_STA_RX_BW_80 && !IEEE80211_IS_CHAN_VHT80(ni->ni_chan)) bw = sta->deflink.bandwidth; sta->deflink.bandwidth = bw; skip_bw: band = vif->bss_conf.chanctx_conf->def.chan->band; vht_cap = &hw->wiphy->bands[band]->vht_cap; sta_vht_cap = &sta->deflink.vht_cap; rx_nss = 0; rx_map = tx_map = 0; for (int i = 7; i >= 0; i--) { uint8_t card, sta; card = (vht_cap->vht_mcs.rx_mcs_map >> (2 * i)) & 0x3; sta = (sta_vht_cap->vht_mcs.rx_mcs_map >> (2 * i)) & 0x3; if (sta != IEEE80211_VHT_MCS_NOT_SUPPORTED) { if (card == IEEE80211_VHT_MCS_NOT_SUPPORTED) sta = IEEE80211_VHT_MCS_NOT_SUPPORTED; else { sta = MIN(sta, card); if (rx_nss == 0) rx_nss = i + 1; } } rx_map |= (sta << (2 * i)); card = (vht_cap->vht_mcs.tx_mcs_map >> (2 * i)) & 0x3; sta = (sta_vht_cap->vht_mcs.tx_mcs_map >> (2 * i)) & 0x3; if (sta != IEEE80211_VHT_MCS_NOT_SUPPORTED) { if (card == IEEE80211_VHT_MCS_NOT_SUPPORTED) sta = IEEE80211_VHT_MCS_NOT_SUPPORTED; else sta = MIN(sta, card); } tx_map |= (sta << (2 * i)); } TRACEOK("VHT rx_mcs_map %#010x->%#010x, tx_mcs_map %#010x->%#010x, rx_nss = %d", sta_vht_cap->vht_mcs.rx_mcs_map, rx_map, sta_vht_cap->vht_mcs.tx_mcs_map, tx_map, rx_nss); sta_vht_cap->vht_mcs.rx_mcs_map = rx_map; sta_vht_cap->vht_mcs.tx_mcs_map = tx_map; if (rx_nss > 0) { TRACEOK("VHT rx_nss = max(%d, %d)", rx_nss, sta->deflink.rx_nss); sta->deflink.rx_nss = MAX(rx_nss, sta->deflink.rx_nss); } else { sta->deflink.vht_cap.vht_supported = false; return; } switch (sta->deflink.vht_cap.cap & IEEE80211_VHT_CAP_MAX_MPDU_MASK) { case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454: sta->deflink.agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_11454; break; case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991: sta->deflink.agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_7991; break; case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895: default: sta->deflink.agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_3895; break; } } #endif static void lkpi_sta_sync_from_ni(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta, struct ieee80211_node *ni, bool updchnctx) { /* * Ensure rx_nss is at least 1 as otherwise drivers run into * unexpected problems. */ sta->deflink.rx_nss = 1; #if defined(LKPI_80211_HT) lkpi_sta_sync_ht_from_ni(hw, vif, sta, ni); #endif #if defined(LKPI_80211_VHT) lkpi_sta_sync_vht_from_ni(hw, vif, sta, ni); #endif /* * We are also called from node allocation which net80211 * can do even on `ifconfig down`; in that case the chanctx * may still be valid and we get a discrepancy between * sta and chanctx. Thus do not try to update the chanctx * when called from lkpi_lsta_alloc(). */ if (updchnctx) lkpi_sync_chanctx_cw_from_rx_bw(hw, vif, sta); } #if 0 static uint8_t lkpi_get_max_rx_chains(struct ieee80211_node *ni) { uint8_t chains; #if defined(LKPI_80211_HT) || defined(LKPI_80211_VHT) struct lkpi_sta *lsta; struct ieee80211_sta *sta; lsta = ni->ni_drv_data; sta = LSTA_TO_STA(lsta); #endif chains = 1; #if defined(LKPI_80211_HT) IMPROVE("We should factor counting MCS/NSS out for sync and here"); if (sta->deflink.ht_cap.ht_supported) chains = MAX(chains, sta->deflink.rx_nss); #endif #if defined(LKPI_80211_VHT) if (sta->deflink.vht_cap.vht_supported) chains = MAX(chains, sta->deflink.rx_nss); #endif return (chains); } #endif static void lkpi_lsta_dump(struct lkpi_sta *lsta, struct ieee80211_node *ni, const char *_f, int _l) { #ifdef LINUXKPI_DEBUG_80211 if ((linuxkpi_debug_80211 & D80211_TRACE_STA) == 0) return; if (lsta == NULL) return; printf("%s:%d lsta %p ni %p sta %p\n", _f, _l, lsta, ni, &lsta->sta); if (ni != NULL) ieee80211_dump_node(NULL, ni); printf("\ttxq_task txq len %d mtx\n", mbufq_len(&lsta->txq)); printf("\tkc %p state %d added_to_drv %d in_mgd %d\n", &lsta->kc[0], lsta->state, lsta->added_to_drv, lsta->in_mgd); #endif } static void lkpi_lsta_remove(struct lkpi_sta *lsta, struct lkpi_vif *lvif) { lockdep_assert_wiphy(lsta->hw->wiphy); KASSERT(!list_empty(&lsta->lsta_list), ("%s: lsta %p ni %p\n", __func__, lsta, lsta->ni)); list_del_init(&lsta->lsta_list); } static struct lkpi_sta * lkpi_lsta_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN], struct ieee80211_hw *hw, struct ieee80211_node *ni) { struct lkpi_sta *lsta; struct lkpi_vif *lvif; struct ieee80211_vif *vif; struct ieee80211_sta *sta; int band, i, tid; lsta = malloc(sizeof(*lsta) + hw->sta_data_size, M_LKPI80211, M_NOWAIT | M_ZERO); if (lsta == NULL) return (NULL); lsta->hw = hw; lsta->added_to_drv = false; lsta->state = IEEE80211_STA_NOTEXIST; /* * Link the ni to the lsta here without taking a reference. * For one we would have to take the reference in node_init() * as ieee80211_alloc_node() will initialise the refcount after us. * For the other a ni and an lsta are 1:1 mapped and always together * from [ic_]node_alloc() to [ic_]node_free() so we are essentally * using the ni references for the lsta as well despite it being * two separate allocations. */ lsta->ni = ni; /* The back-pointer "drv_data" to net80211_node let's us get lsta. */ ni->ni_drv_data = lsta; lvif = VAP_TO_LVIF(vap); vif = LVIF_TO_VIF(lvif); sta = LSTA_TO_STA(lsta); IEEE80211_ADDR_COPY(sta->addr, mac); /* TXQ */ for (tid = 0; tid < nitems(sta->txq); tid++) { struct lkpi_txq *ltxq; /* We are not limiting ourselves to hw.queues here. */ ltxq = malloc(sizeof(*ltxq) + hw->txq_data_size, M_LKPI80211, M_NOWAIT | M_ZERO); if (ltxq == NULL) goto cleanup; /* iwlwifi//mvm/sta.c::tid_to_mac80211_ac[] */ if (tid == IEEE80211_NUM_TIDS) { if (!ieee80211_hw_check(hw, STA_MMPDU_TXQ)) { free(ltxq, M_LKPI80211); continue; } IMPROVE("AP/if we support non-STA here too"); ltxq->txq.ac = IEEE80211_AC_VO; } else { ltxq->txq.ac = ieee80211e_up_to_ac[tid & 7]; } ltxq->seen_dequeue = false; ltxq->stopped = false; ltxq->txq.vif = vif; ltxq->txq.tid = tid; ltxq->txq.sta = sta; TAILQ_ELEM_INIT(ltxq, txq_entry); skb_queue_head_init(<xq->skbq); LKPI_80211_LTXQ_LOCK_INIT(ltxq); sta->txq[tid] = <xq->txq; } /* Deflink information. */ for (band = 0; band < NUM_NL80211_BANDS; band++) { struct ieee80211_supported_band *supband; uint32_t rate_mandatory;; supband = hw->wiphy->bands[band]; if (supband == NULL) continue; switch (band) { case NL80211_BAND_2GHZ: /* We have to assume 11g support here. */ rate_mandatory = IEEE80211_RATE_MANDATORY_G | IEEE80211_RATE_MANDATORY_B; break; case NL80211_BAND_5GHZ: rate_mandatory = IEEE80211_RATE_MANDATORY_A; break; default: continue; } for (i = 0; i < supband->n_bitrates; i++) { if ((supband->bitrates[i].flags & rate_mandatory) != 0) sta->deflink.supp_rates[band] |= BIT(i); } } sta->deflink.smps_mode = IEEE80211_SMPS_OFF; sta->deflink.bandwidth = IEEE80211_STA_RX_BW_20; sta->deflink.agg.max_rc_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_BA; sta->deflink.rx_nss = 1; sta->deflink.sta = sta; lkpi_sta_sync_from_ni(hw, vif, sta, ni, false); IMPROVE("he, eht, bw_320, ... smps_mode, .."); /* Link configuration. */ IEEE80211_ADDR_COPY(sta->deflink.addr, sta->addr); sta->link[0] = &sta->deflink; for (i = 1; i < nitems(sta->link); i++) { IMPROVE("more links; only link[0] = deflink currently."); } IMPROVE("11be"); sta->mlo = false; /* Deferred TX path. */ LKPI_80211_LSTA_TXQ_LOCK_INIT(lsta); TASK_INIT(&lsta->txq_task, 0, lkpi_80211_txq_task, lsta); mbufq_init(&lsta->txq, 32 * NAPI_POLL_WEIGHT); lsta->txq_ready = true; return (lsta); cleanup: for (; tid >= 0; tid--) { struct lkpi_txq *ltxq; ltxq = TXQ_TO_LTXQ(sta->txq[tid]); LKPI_80211_LTXQ_LOCK_DESTROY(ltxq); free(sta->txq[tid], M_LKPI80211); } free(lsta, M_LKPI80211); return (NULL); } static void lkpi_lsta_free(struct lkpi_sta *lsta, struct ieee80211_node *ni) { struct mbuf *m; if (lsta->added_to_drv) panic("%s: Trying to free an lsta still known to firmware: " "lsta %p ni %p added_to_drv %d\n", __func__, lsta, ni, lsta->added_to_drv); /* XXX-BZ free resources, ... */ IMPROVE(); /* Drain sta->txq[] */ LKPI_80211_LSTA_TXQ_LOCK(lsta); lsta->txq_ready = false; LKPI_80211_LSTA_TXQ_UNLOCK(lsta); /* Drain taskq, won't be restarted until added_to_drv is set again. */ while (taskqueue_cancel(taskqueue_thread, &lsta->txq_task, NULL) != 0) taskqueue_drain(taskqueue_thread, &lsta->txq_task); /* Flush mbufq (make sure to release ni refs!). */ m = mbufq_dequeue(&lsta->txq); while (m != NULL) { struct ieee80211_node *nim; nim = (struct ieee80211_node *)m->m_pkthdr.rcvif; if (nim != NULL) ieee80211_free_node(nim); m_freem(m); m = mbufq_dequeue(&lsta->txq); } KASSERT(mbufq_empty(&lsta->txq), ("%s: lsta %p has txq len %d != 0\n", __func__, lsta, mbufq_len(&lsta->txq))); LKPI_80211_LSTA_TXQ_LOCK_DESTROY(lsta); /* Remove lsta from vif; that is done by the state machine. Should assert it? */ IMPROVE("Make sure everything is cleaned up."); /* Free lsta. */ lsta->ni = NULL; ni->ni_drv_data = NULL; free(lsta, M_LKPI80211); } static enum nl80211_band lkpi_net80211_chan_to_nl80211_band(struct ieee80211_channel *c) { if (IEEE80211_IS_CHAN_2GHZ(c)) return (NL80211_BAND_2GHZ); else if (IEEE80211_IS_CHAN_5GHZ(c)) return (NL80211_BAND_5GHZ); #ifdef __notyet__ else if () return (NL80211_BAND_6GHZ); else if () return (NL80211_BAND_60GHZ); else if (IEEE80211_IS_CHAN_GSM(c)) return (NL80211_BAND_XXX); #endif else panic("%s: unsupported band. c %p flags %#x\n", __func__, c, c->ic_flags); } static uint32_t lkpi_nl80211_band_to_net80211_band(enum nl80211_band band) { /* XXX-BZ this is just silly; net80211 is too convoluted. */ /* IEEE80211_CHAN_A / _G / .. doesn't really work either. */ switch (band) { case NL80211_BAND_2GHZ: return (IEEE80211_CHAN_2GHZ); break; case NL80211_BAND_5GHZ: return (IEEE80211_CHAN_5GHZ); break; case NL80211_BAND_60GHZ: break; case NL80211_BAND_6GHZ: break; default: panic("%s: unsupported band %u\n", __func__, band); break; } IMPROVE(); return (0x00); } #ifdef LINUXKPI_DEBUG_80211 static const char * lkpi_nl80211_band_name(enum nl80211_band band) { switch (band) { case NL80211_BAND_2GHZ: return "2Ghz"; break; case NL80211_BAND_5GHZ: return "5Ghz"; break; case NL80211_BAND_60GHZ: return "60Ghz"; break; case NL80211_BAND_6GHZ: return "6Ghz"; break; default: panic("%s: unsupported band %u\n", __func__, band); break; } } #endif #if 0 static enum ieee80211_ac_numbers lkpi_ac_net_to_l80211(int ac) { switch (ac) { case WME_AC_VO: return (IEEE80211_AC_VO); case WME_AC_VI: return (IEEE80211_AC_VI); case WME_AC_BE: return (IEEE80211_AC_BE); case WME_AC_BK: return (IEEE80211_AC_BK); default: printf("%s: invalid WME_AC_* input: ac = %d\n", __func__, ac); return (IEEE80211_AC_BE); } } #endif static enum nl80211_iftype lkpi_opmode_to_vif_type(enum ieee80211_opmode opmode) { switch (opmode) { case IEEE80211_M_IBSS: return (NL80211_IFTYPE_ADHOC); break; case IEEE80211_M_STA: return (NL80211_IFTYPE_STATION); break; case IEEE80211_M_WDS: return (NL80211_IFTYPE_WDS); break; case IEEE80211_M_HOSTAP: return (NL80211_IFTYPE_AP); break; case IEEE80211_M_MONITOR: return (NL80211_IFTYPE_MONITOR); break; case IEEE80211_M_MBSS: return (NL80211_IFTYPE_MESH_POINT); break; case IEEE80211_M_AHDEMO: /* FALLTHROUGH */ default: printf("ERROR: %s: unsupported opmode %d\n", __func__, opmode); /* FALLTHROUGH */ } return (NL80211_IFTYPE_UNSPECIFIED); } #ifdef LKPI_80211_HW_CRYPTO static const char * lkpi_cipher_suite_to_name(uint32_t wlan_cipher_suite) { switch (wlan_cipher_suite) { case WLAN_CIPHER_SUITE_WEP40: return ("WEP40"); case WLAN_CIPHER_SUITE_WEP104: return ("WEP104"); case WLAN_CIPHER_SUITE_TKIP: return ("TKIP"); case WLAN_CIPHER_SUITE_CCMP: return ("CCMP"); case WLAN_CIPHER_SUITE_CCMP_256: return ("CCMP_256"); case WLAN_CIPHER_SUITE_GCMP: return ("GCMP"); case WLAN_CIPHER_SUITE_GCMP_256: return ("GCMP_256"); case WLAN_CIPHER_SUITE_AES_CMAC: return ("AES_CMAC"); case WLAN_CIPHER_SUITE_BIP_CMAC_256: return ("BIP_CMAC_256"); case WLAN_CIPHER_SUITE_BIP_GMAC_128: return ("BIP_GMAC_128"); case WLAN_CIPHER_SUITE_BIP_GMAC_256: return ("BIP_GMAC_256"); default: return ("??"); } } static uint32_t lkpi_l80211_to_net80211_cyphers(struct ieee80211com *ic, uint32_t wlan_cipher_suite) { switch (wlan_cipher_suite) { case WLAN_CIPHER_SUITE_WEP40: return (IEEE80211_CRYPTO_WEP); case WLAN_CIPHER_SUITE_WEP104: return (IEEE80211_CRYPTO_WEP); case WLAN_CIPHER_SUITE_TKIP: return (IEEE80211_CRYPTO_TKIP); case WLAN_CIPHER_SUITE_CCMP: return (IEEE80211_CRYPTO_AES_CCM); case WLAN_CIPHER_SUITE_CCMP_256: return (IEEE80211_CRYPTO_AES_CCM_256); case WLAN_CIPHER_SUITE_GCMP: return (IEEE80211_CRYPTO_AES_GCM_128); case WLAN_CIPHER_SUITE_GCMP_256: return (IEEE80211_CRYPTO_AES_GCM_256); case WLAN_CIPHER_SUITE_AES_CMAC: return (IEEE80211_CRYPTO_BIP_CMAC_128); case WLAN_CIPHER_SUITE_BIP_CMAC_256: return (IEEE80211_CRYPTO_BIP_CMAC_256); case WLAN_CIPHER_SUITE_BIP_GMAC_128: return (IEEE80211_CRYPTO_BIP_GMAC_128); case WLAN_CIPHER_SUITE_BIP_GMAC_256: return (IEEE80211_CRYPTO_BIP_GMAC_256); default: ic_printf(ic, "%s: unknown WLAN Cipher Suite %#08x | %u (%s)\n", __func__, wlan_cipher_suite >> 8, wlan_cipher_suite & 0xff, lkpi_cipher_suite_to_name(wlan_cipher_suite)); return (0); } } static uint32_t lkpi_net80211_to_l80211_cipher_suite(uint32_t cipher, uint8_t keylen) { switch (cipher) { case IEEE80211_CIPHER_WEP: if (keylen == (40/NBBY)) return (WLAN_CIPHER_SUITE_WEP40); else if (keylen == (104/NBBY)) return (WLAN_CIPHER_SUITE_WEP104); else { printf("%s: WEP with unsupported keylen %d\n", __func__, keylen * NBBY); return (0); } break; case IEEE80211_CIPHER_TKIP: return (WLAN_CIPHER_SUITE_TKIP); case IEEE80211_CIPHER_AES_CCM: return (WLAN_CIPHER_SUITE_CCMP); case IEEE80211_CIPHER_AES_CCM_256: return (WLAN_CIPHER_SUITE_CCMP_256); case IEEE80211_CIPHER_AES_GCM_128: return (WLAN_CIPHER_SUITE_GCMP); case IEEE80211_CIPHER_AES_GCM_256: return (WLAN_CIPHER_SUITE_GCMP_256); case IEEE80211_CIPHER_BIP_CMAC_128: return (WLAN_CIPHER_SUITE_AES_CMAC); case IEEE80211_CIPHER_BIP_CMAC_256: return (WLAN_CIPHER_SUITE_BIP_CMAC_256); case IEEE80211_CIPHER_BIP_GMAC_128: return (WLAN_CIPHER_SUITE_BIP_GMAC_128); case IEEE80211_CIPHER_BIP_GMAC_256: return (WLAN_CIPHER_SUITE_BIP_GMAC_256); case IEEE80211_CIPHER_AES_OCB: case IEEE80211_CIPHER_TKIPMIC: /* * TKIP w/ hw MIC support * (gone wrong; should really be a crypto flag in net80211). */ case IEEE80211_CIPHER_CKIP: case IEEE80211_CIPHER_NONE: printf("%s: unsupported cipher %#010x\n", __func__, cipher); break; default: printf("%s: unknown cipher %#010x\n", __func__, cipher); }; return (0); } #endif #ifdef __notyet__ static enum ieee80211_sta_state lkpi_net80211_state_to_sta_state(enum ieee80211_state state) { /* * XXX-BZ The net80211 states are "try to ..", the lkpi8011 states are * "done". Also ASSOC/AUTHORIZED are both "RUN" then? */ switch (state) { case IEEE80211_S_INIT: return (IEEE80211_STA_NOTEXIST); case IEEE80211_S_SCAN: return (IEEE80211_STA_NONE); case IEEE80211_S_AUTH: return (IEEE80211_STA_AUTH); case IEEE80211_S_ASSOC: return (IEEE80211_STA_ASSOC); case IEEE80211_S_RUN: return (IEEE80211_STA_AUTHORIZED); case IEEE80211_S_CAC: case IEEE80211_S_CSA: case IEEE80211_S_SLEEP: default: UNIMPLEMENTED; }; return (IEEE80211_STA_NOTEXIST); } #endif static struct linuxkpi_ieee80211_channel * lkpi_find_lkpi80211_chan(struct lkpi_hw *lhw, struct ieee80211_channel *c) { struct ieee80211_hw *hw; struct linuxkpi_ieee80211_channel *channels; enum nl80211_band band; int i, nchans; hw = LHW_TO_HW(lhw); band = lkpi_net80211_chan_to_nl80211_band(c); if (hw->wiphy->bands[band] == NULL) return (NULL); nchans = hw->wiphy->bands[band]->n_channels; if (nchans <= 0) return (NULL); channels = hw->wiphy->bands[band]->channels; for (i = 0; i < nchans; i++) { if (channels[i].center_freq == c->ic_freq) return (&channels[i]); } return (NULL); } #if 0 static struct linuxkpi_ieee80211_channel * lkpi_get_lkpi80211_chan(struct ieee80211com *ic, struct ieee80211_node *ni) { struct linuxkpi_ieee80211_channel *chan; struct ieee80211_channel *c; struct lkpi_hw *lhw; chan = NULL; if (ni != NULL && ni->ni_chan != IEEE80211_CHAN_ANYC) c = ni->ni_chan; else if (ic->ic_bsschan != IEEE80211_CHAN_ANYC) c = ic->ic_bsschan; else if (ic->ic_curchan != IEEE80211_CHAN_ANYC) c = ic->ic_curchan; else c = NULL; if (c != NULL && c != IEEE80211_CHAN_ANYC) { lhw = ic->ic_softc; chan = lkpi_find_lkpi80211_chan(lhw, c); } return (chan); } #endif struct linuxkpi_ieee80211_channel * linuxkpi_ieee80211_get_channel(struct wiphy *wiphy, uint32_t freq) { enum nl80211_band band; for (band = 0; band < NUM_NL80211_BANDS; band++) { struct ieee80211_supported_band *supband; struct linuxkpi_ieee80211_channel *channels; int i; supband = wiphy->bands[band]; if (supband == NULL || supband->n_channels == 0) continue; channels = supband->channels; for (i = 0; i < supband->n_channels; i++) { if (channels[i].center_freq == freq) return (&channels[i]); } } return (NULL); } #ifdef LKPI_80211_HW_CRYPTO static int lkpi_sta_del_keys(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct lkpi_sta *lsta) { int error; if (!lkpi_hwcrypto) return (0); lockdep_assert_wiphy(hw->wiphy); if (vif->cfg.assoc && lsta->state == IEEE80211_STA_AUTHORIZED) { if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO) ic_printf(lsta->ni->ni_ic, "%d %lu %s: vif still assoc; not deleting keys\n", curthread->td_tid, jiffies, __func__); return (0); } ieee80211_ref_node(lsta->ni); error = 0; for (ieee80211_keyix keyix = 0; keyix < nitems(lsta->kc); keyix++) { struct ieee80211_key_conf *kc; int err; if (lsta->kc[keyix] == NULL) continue; kc = lsta->kc[keyix]; #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO) ic_printf(lsta->ni->ni_ic, "%d %lu %s: running set_key cmd %d(%s) for " "sta %6D: keyidx %u hw_key_idx %u flags %b\n", curthread->td_tid, jiffies, __func__, DISABLE_KEY, "DISABLE", lsta->sta.addr, ":", kc->keyidx, kc->hw_key_idx, kc->flags, IEEE80211_KEY_FLAG_BITS); #endif err = lkpi_80211_mo_set_key(hw, DISABLE_KEY, vif, LSTA_TO_STA(lsta), kc); if (err != 0) { ic_printf(lsta->ni->ni_ic, "%d %lu %s: set_key cmd %d(%s) for " "sta %6D failed: %d\n", curthread->td_tid, jiffies, __func__, DISABLE_KEY, "DISABLE", lsta->sta.addr, ":", err); error++; /* * If we free the key here we will never be able to get it * removed from the driver/fw which will likely make us * crash (firmware). */ continue; } #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO) ic_printf(lsta->ni->ni_ic, "%d %lu %s: set_key cmd %d(%s) for " "sta %6D succeeded: keyidx %u hw_key_idx %u flags %b\n", curthread->td_tid, jiffies, __func__, DISABLE_KEY, "DISABLE", lsta->sta.addr, ":", kc->keyidx, kc->hw_key_idx, kc->flags, IEEE80211_KEY_FLAG_BITS); #endif lsta->kc[keyix] = NULL; free(kc, M_LKPI80211); } ieee80211_free_node(lsta->ni); return (error); } /* XXX-BZ one day we should replace this iterating over VIFs, or node list? */ /* See also lkpi_sta_del_keys() these days. */ static int lkpi_iv_key_delete(struct ieee80211vap *vap, const struct ieee80211_key *k) { struct ieee80211com *ic; struct lkpi_hw *lhw; struct ieee80211_hw *hw; struct lkpi_vif *lvif; struct lkpi_sta *lsta; struct ieee80211_vif *vif; struct ieee80211_sta *sta; struct ieee80211_node *ni; struct ieee80211_key_conf *kc; int error; ic = vap->iv_ic; lhw = ic->ic_softc; hw = LHW_TO_HW(lhw); lvif = VAP_TO_LVIF(vap); vif = LVIF_TO_VIF(lvif); /* * Make sure we do not make it here without going through * lkpi_iv_key_update_begin() first. */ lockdep_assert_wiphy(hw->wiphy); ni = ieee80211_ref_node(vap->iv_bss); lsta = ni->ni_drv_data; if (lsta == NULL) { ic_printf(ic, "%s: ni %p (%6D) with lsta NULL\n", __func__, ni, ni->ni_bssid, ":"); ieee80211_free_node(ni); return (0); } /* * While we are assoc we may still send packets. We cannot delete the * keys as otherwise packets could go out unencrypted. Some firmware * does not like this and will fire an assert. * net80211 needs to drive this better but given we want the disassoc * frame out and have to unlock we are open to a race currently. * This check should prevent problems. * How to test: run 800Mbit/s UDP traffic and during that restart your * supplicant. You want to survive that. */ if (vif->cfg.assoc && lsta->state == IEEE80211_STA_AUTHORIZED) { if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO) ic_printf(ic, "%d %lu %s: vif still assoc; not deleting keys\n", curthread->td_tid, jiffies, __func__); ieee80211_free_node(ni); return (0); } if (IEEE80211_KEY_UNDEFINED(k)) { ic_printf(ic, "%s: vap %p key %p is undefined: %p %u\n", __func__, vap, k, k->wk_cipher, k->wk_keyix); ieee80211_free_node(ni); return (0); } if (vap->iv_bss == NULL) { ic_printf(ic, "%s: iv_bss %p for vap %p is NULL\n", __func__, vap->iv_bss, vap); ieee80211_free_node(ni); return (0); } sta = LSTA_TO_STA(lsta); if (lsta->kc[k->wk_keyix] == NULL) { #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO) ic_printf(ic, "%d %lu %s: sta %6D and no key information, " "keyidx %u wk_macaddr %6D; returning success\n", curthread->td_tid, jiffies, __func__, sta->addr, ":", k->wk_keyix, k->wk_macaddr, ":"); #endif ieee80211_free_node(ni); return (1); } kc = lsta->kc[k->wk_keyix]; #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO) ic_printf(ic, "%d %lu %s: running set_key cmd %d(%s) for sta %6D: " "keyidx %u hw_key_idx %u flags %b\n", curthread->td_tid, jiffies, __func__, DISABLE_KEY, "DISABLE", sta->addr, ":", kc->keyidx, kc->hw_key_idx, kc->flags, IEEE80211_KEY_FLAG_BITS); #endif error = lkpi_80211_mo_set_key(hw, DISABLE_KEY, vif, sta, kc); if (error != 0) { ic_printf(ic, "%d %lu %s: set_key cmd %d(%s) for sta %6D failed: %d\n", curthread->td_tid, jiffies, __func__, DISABLE_KEY, "DISABLE", sta->addr, ":", error); error = 0; goto out; } #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO) ic_printf(ic, "%d %lu %s: set_key cmd %d(%s) for sta %6D succeeded: " "keyidx %u hw_key_idx %u flags %b\n", curthread->td_tid, jiffies, __func__, DISABLE_KEY, "DISABLE", sta->addr, ":", kc->keyidx, kc->hw_key_idx, kc->flags, IEEE80211_KEY_FLAG_BITS); #endif lsta->kc[k->wk_keyix] = NULL; free(kc, M_LKPI80211); error = 1; out: ieee80211_free_node(ni); return (error); } static int lkpi_iv_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k) { struct ieee80211com *ic; struct lkpi_hw *lhw; struct ieee80211_hw *hw; struct lkpi_vif *lvif; struct lkpi_sta *lsta; struct ieee80211_vif *vif; struct ieee80211_sta *sta; struct ieee80211_node *ni; struct ieee80211_key_conf *kc; uint32_t lcipher; uint16_t exp_flags; uint8_t keylen; int error; ic = vap->iv_ic; lhw = ic->ic_softc; hw = LHW_TO_HW(lhw); /* * Make sure we do not make it here without going through * lkpi_iv_key_update_begin() first. */ lockdep_assert_wiphy(hw->wiphy); if (IEEE80211_KEY_UNDEFINED(k)) { ic_printf(ic, "%s: vap %p key %p is undefined: %p %u\n", __func__, vap, k, k->wk_cipher, k->wk_keyix); return (0); } if (vap->iv_bss == NULL) { ic_printf(ic, "%s: iv_bss %p for vap %p is NULL\n", __func__, vap->iv_bss, vap); return (0); } ni = ieee80211_ref_node(vap->iv_bss); lsta = ni->ni_drv_data; if (lsta == NULL) { ic_printf(ic, "%s: ni %p (%6D) with lsta NULL\n", __func__, ni, ni->ni_bssid, ":"); ieee80211_free_node(ni); return (0); } sta = LSTA_TO_STA(lsta); keylen = k->wk_keylen; lcipher = lkpi_net80211_to_l80211_cipher_suite( k->wk_cipher->ic_cipher, k->wk_keylen); switch (lcipher) { case WLAN_CIPHER_SUITE_TKIP: keylen += 2 * k->wk_cipher->ic_miclen; break; case WLAN_CIPHER_SUITE_CCMP: case WLAN_CIPHER_SUITE_GCMP: break; default: ic_printf(ic, "%s: CIPHER SUITE %#x (%s) not supported\n", __func__, lcipher, lkpi_cipher_suite_to_name(lcipher)); IMPROVE(); ieee80211_free_node(ni); return (0); } if (lsta->kc[k->wk_keyix] != NULL) { IMPROVE("Still in firmware? Del first. Can we assert this cannot happen?"); ic_printf(ic, "%s: sta %6D found with key information\n", __func__, sta->addr, ":"); kc = lsta->kc[k->wk_keyix]; lsta->kc[k->wk_keyix] = NULL; free(kc, M_LKPI80211); kc = NULL; /* safeguard */ } kc = malloc(sizeof(*kc) + keylen, M_LKPI80211, M_WAITOK | M_ZERO); kc->_k = k; /* Save the pointer to net80211. */ kc->cipher = lcipher; kc->keyidx = k->wk_keyix; #if 0 kc->hw_key_idx = /* set by hw and needs to be passed for TX */; #endif atomic64_set(&kc->tx_pn, k->wk_keytsc); kc->keylen = k->wk_keylen; memcpy(kc->key, k->wk_key, k->wk_keylen); if (k->wk_flags & (IEEE80211_KEY_XMIT | IEEE80211_KEY_RECV)) kc->flags |= IEEE80211_KEY_FLAG_PAIRWISE; if (k->wk_flags & IEEE80211_KEY_GROUP) kc->flags &= ~IEEE80211_KEY_FLAG_PAIRWISE; kc->iv_len = k->wk_cipher->ic_header; kc->icv_len = k->wk_cipher->ic_trailer; switch (kc->cipher) { case WLAN_CIPHER_SUITE_TKIP: memcpy(kc->key + NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY, k->wk_txmic, k->wk_cipher->ic_miclen); memcpy(kc->key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, k->wk_rxmic, k->wk_cipher->ic_miclen); break; case WLAN_CIPHER_SUITE_CCMP: case WLAN_CIPHER_SUITE_GCMP: break; default: /* currently UNREACH */ IMPROVE(); break; }; lsta->kc[k->wk_keyix] = kc; #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO) ic_printf(ic, "%d %lu %s: running set_key cmd %d(%s) for sta %6D: " "kc %p keyidx %u hw_key_idx %u keylen %u flags %b\n", curthread->td_tid, jiffies, __func__, SET_KEY, "SET", sta->addr, ":", kc, kc->keyidx, kc->hw_key_idx, kc->keylen, kc->flags, IEEE80211_KEY_FLAG_BITS); #endif lvif = VAP_TO_LVIF(vap); vif = LVIF_TO_VIF(lvif); error = lkpi_80211_mo_set_key(hw, SET_KEY, vif, sta, kc); if (error != 0) { ic_printf(ic, "%d %lu %s: set_key cmd %d(%s) for sta %6D failed: %d\n", curthread->td_tid, jiffies, __func__, SET_KEY, "SET", sta->addr, ":", error); lsta->kc[k->wk_keyix] = NULL; free(kc, M_LKPI80211); ieee80211_free_node(ni); return (0); } #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO) ic_printf(ic, "%d %lu %s: set_key cmd %d(%s) for sta %6D succeeded: " "kc %p keyidx %u hw_key_idx %u flags %b\n", curthread->td_tid, jiffies, __func__, SET_KEY, "SET", sta->addr, ":", kc, kc->keyidx, kc->hw_key_idx, kc->flags, IEEE80211_KEY_FLAG_BITS); #endif exp_flags = 0; switch (kc->cipher) { case WLAN_CIPHER_SUITE_TKIP: exp_flags = (IEEE80211_KEY_FLAG_PAIRWISE | IEEE80211_KEY_FLAG_PUT_IV_SPACE | IEEE80211_KEY_FLAG_GENERATE_MMIC | IEEE80211_KEY_FLAG_PUT_MIC_SPACE); #define TKIP_INVAL_COMBINATION \ (IEEE80211_KEY_FLAG_PUT_MIC_SPACE|IEEE80211_KEY_FLAG_GENERATE_MMIC) if ((kc->flags & TKIP_INVAL_COMBINATION) == TKIP_INVAL_COMBINATION) { ic_printf(ic, "%s: SET_KEY for %s returned invalid " "combination %b\n", __func__, lkpi_cipher_suite_to_name(kc->cipher), kc->flags, IEEE80211_KEY_FLAG_BITS); } #undef TKIP_INVAL_COMBINATION #ifdef __notyet__ /* Do flags surgery; special see linuxkpi_ieee80211_ifattach(). */ if ((kc->flags & IEEE80211_KEY_FLAG_GENERATE_MMIC) != 0) { k->wk_flags &= ~(IEEE80211_KEY_NOMICMGT|IEEE80211_KEY_NOMIC); k->wk_flags |= IEEE80211_KEY_SWMIC; ic->ic_cryptocaps &= ~IEEE80211_CRYPTO_TKIPMIC } #endif break; case WLAN_CIPHER_SUITE_CCMP: case WLAN_CIPHER_SUITE_GCMP: exp_flags = (IEEE80211_KEY_FLAG_PAIRWISE | IEEE80211_KEY_FLAG_PUT_IV_SPACE | IEEE80211_KEY_FLAG_GENERATE_IV | IEEE80211_KEY_FLAG_GENERATE_IV_MGMT | /* Only needs IV geeration for MGMT frames. */ IEEE80211_KEY_FLAG_SW_MGMT_TX); /* MFP in software */ break; } if ((kc->flags & ~exp_flags) != 0) ic_printf(ic, "%s: SET_KEY for %s returned unexpected key flags: " " %#06x & ~%#06x = %b\n", __func__, lkpi_cipher_suite_to_name(kc->cipher), kc->flags, exp_flags, (kc->flags & ~exp_flags), IEEE80211_KEY_FLAG_BITS); #ifdef __notyet__ /* Do flags surgery. */ if ((kc->flags & IEEE80211_KEY_FLAG_GENERATE_IV_MGMT) == 0) k->wk_flags |= IEEE80211_KEY_NOIVMGT; if ((kc->flags & IEEE80211_KEY_FLAG_GENERATE_IV) == 0) k->wk_flags |= IEEE80211_KEY_NOIV; #endif ieee80211_free_node(ni); return (1); } static void lkpi_iv_key_update_begin(struct ieee80211vap *vap) { struct ieee80211_node_table *nt; struct ieee80211com *ic; struct lkpi_hw *lhw; struct ieee80211_hw *hw; struct lkpi_vif *lvif; struct ieee80211_node *ni; bool icislocked, ntislocked; ic = vap->iv_ic; lhw = ic->ic_softc; hw = LHW_TO_HW(lhw); lvif = VAP_TO_LVIF(vap); nt = &ic->ic_sta; icislocked = IEEE80211_IS_LOCKED(ic); ntislocked = IEEE80211_NODE_IS_LOCKED(nt); #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO) ic_printf(ic, "%d %lu %s: vap %p ic %p %slocked nt %p %slocked " "lvif ic_unlocked %d nt_unlocked %d\n", curthread->td_tid, jiffies, __func__, vap, ic, icislocked ? "" : "un", nt, ntislocked ? "" : "un", lvif->ic_unlocked, lvif->nt_unlocked); #endif /* * This is inconsistent net80211 locking to be fixed one day. */ /* Try to make sure the node does not go away while possibly unlocked. */ ni = NULL; if (icislocked || ntislocked) { if (vap->iv_bss != NULL) ni = ieee80211_ref_node(vap->iv_bss); } if (icislocked) IEEE80211_UNLOCK(ic); if (ntislocked) IEEE80211_NODE_UNLOCK(nt); wiphy_lock(hw->wiphy); KASSERT(lvif->key_update_iv_bss == NULL, ("%s: key_update_iv_bss not NULL %p", __func__, lvif->key_update_iv_bss)); lvif->key_update_iv_bss = ni; /* * ic/nt_unlocked could be a bool given we are under the lock and there * must only be a single thread. * In case anything in the future disturbs the order the refcnt will * help us catching problems a lot easier. */ if (icislocked) refcount_acquire(&lvif->ic_unlocked); if (ntislocked) refcount_acquire(&lvif->nt_unlocked); /* * Stop the queues while doing key updates. */ ieee80211_stop_queues(hw); } static void lkpi_iv_key_update_end(struct ieee80211vap *vap) { struct ieee80211_node_table *nt; struct ieee80211com *ic; struct lkpi_hw *lhw; struct ieee80211_hw *hw; struct lkpi_vif *lvif; bool icislocked, ntislocked; ic = vap->iv_ic; lhw = ic->ic_softc; hw = LHW_TO_HW(lhw); lvif = VAP_TO_LVIF(vap); nt = &ic->ic_sta; /* * Re-enabled the queues after the key update. */ lkpi_ieee80211_wake_queues_locked(hw); icislocked = IEEE80211_IS_LOCKED(ic); MPASS(!icislocked); ntislocked = IEEE80211_NODE_IS_LOCKED(nt); MPASS(!ntislocked); #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO) ic_printf(ic, "%d %lu %s: vap %p ic %p %slocked nt %p %slocked " "lvif ic_unlocked %d nt_unlocked %d\n", curthread->td_tid, jiffies, __func__, vap, ic, icislocked ? "" : "un", nt, ntislocked ? "" : "un", lvif->ic_unlocked, lvif->nt_unlocked); #endif /* * Check under lock; see comment in lkpi_iv_key_update_begin(). * In case the refcnt gets out of sync locking in net80211 will * quickly barf as well (trying to unlock a lock not held). */ icislocked = refcount_release_if_last(&lvif->ic_unlocked); ntislocked = refcount_release_if_last(&lvif->nt_unlocked); if (lvif->key_update_iv_bss != NULL) { ieee80211_free_node(lvif->key_update_iv_bss); lvif->key_update_iv_bss = NULL; } wiphy_unlock(hw->wiphy); /* * This is inconsistent net80211 locking to be fixed one day. * ic before nt to avoid a LOR. */ if (icislocked) IEEE80211_LOCK(ic); if (ntislocked) IEEE80211_NODE_LOCK(nt); } #endif static void lkpi_cleanup_mcast_list_locked(struct lkpi_hw *lhw) { struct list_head *le, *next; struct netdev_hw_addr *addr; if (lhw->mc_list.count != 0) { list_for_each_safe(le, next, &lhw->mc_list.addr_list) { addr = list_entry(le, struct netdev_hw_addr, addr_list); list_del(le); lhw->mc_list.count--; free(addr, M_LKPI80211); } } KASSERT(lhw->mc_list.count == 0, ("%s: mc_list %p count %d != 0\n", __func__, &lhw->mc_list, lhw->mc_list.count)); } static u_int lkpi_ic_update_mcast_copy(void *arg, struct sockaddr_dl *sdl, u_int cnt) { struct netdev_hw_addr_list *mc_list; struct netdev_hw_addr *addr; KASSERT(arg != NULL && sdl != NULL, ("%s: arg %p sdl %p cnt %u\n", __func__, arg, sdl, cnt)); mc_list = arg; /* If it is on the list already skip it. */ netdev_hw_addr_list_for_each(addr, mc_list) { if (!memcmp(addr->addr, LLADDR(sdl), sdl->sdl_alen)) return (0); } addr = malloc(sizeof(*addr), M_LKPI80211, M_NOWAIT | M_ZERO); if (addr == NULL) return (0); INIT_LIST_HEAD(&addr->addr_list); memcpy(addr->addr, LLADDR(sdl), sdl->sdl_alen); /* XXX this should be a netdev function? */ list_add(&addr->addr_list, &mc_list->addr_list); mc_list->count++; #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE) printf("%s:%d: mc_list count %d: added %6D\n", __func__, __LINE__, mc_list->count, addr->addr, ":"); #endif return (1); } static void lkpi_update_mcast_filter(struct ieee80211com *ic) { struct lkpi_hw *lhw; struct ieee80211_hw *hw; u64 mc; unsigned int changed_flags, flags; bool scanning; lhw = ic->ic_softc; LKPI_80211_LHW_SCAN_LOCK(lhw); scanning = (lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) != 0; LKPI_80211_LHW_SCAN_UNLOCK(lhw); LKPI_80211_LHW_MC_LOCK(lhw); flags = 0; if (scanning) flags |= FIF_BCN_PRBRESP_PROMISC; /* The latter condition may not be as expected but seems wise. */ if (lhw->mc_all_multi || lhw->ops->prepare_multicast == NULL) flags |= FIF_ALLMULTI; hw = LHW_TO_HW(lhw); mc = lkpi_80211_mo_prepare_multicast(hw, &lhw->mc_list); changed_flags = (lhw->mc_flags ^ flags) & FIF_FLAGS_MASK; lkpi_80211_mo_configure_filter(hw, changed_flags, &flags, mc); lhw->mc_flags = flags; #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE) printf("%s: changed_flags %#06x count %d mc_flags %#010x\n", __func__, changed_flags, lhw->mc_list.count, lhw->mc_flags); #endif LKPI_80211_LHW_MC_UNLOCK(lhw); } static enum ieee80211_bss_changed lkpi_update_dtim_tsf(struct ieee80211_vif *vif, struct ieee80211_node *ni, struct ieee80211vap *vap, const char *_f, int _l) { enum ieee80211_bss_changed bss_changed; bss_changed = 0; #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE) printf("%s:%d [%s:%d] assoc %d aid %d beacon_int %u " "dtim_period %u sync_dtim_count %u sync_tsf %ju " "sync_device_ts %u bss_changed %#010jx\n", __func__, __LINE__, _f, _l, vif->cfg.assoc, vif->cfg.aid, vif->bss_conf.beacon_int, vif->bss_conf.dtim_period, vif->bss_conf.sync_dtim_count, (uintmax_t)vif->bss_conf.sync_tsf, vif->bss_conf.sync_device_ts, (uintmax_t)bss_changed); #endif if (vif->bss_conf.beacon_int != ni->ni_intval) { vif->bss_conf.beacon_int = ni->ni_intval; /* iwlwifi FW bug workaround; iwl_mvm_mac_sta_state. */ if (vif->bss_conf.beacon_int < 16) vif->bss_conf.beacon_int = 16; bss_changed |= BSS_CHANGED_BEACON_INT; } /* * lkpi_iv_sta_recv_mgmt() will directly call into this function. * iwlwifi(4) in iwl_mvm_bss_info_changed_station_common() will * stop seesion protection the moment it sees * BSS_CHANGED_BEACON_INFO (with the expectations that it was * "a beacon from the associated AP"). It will also update * the beacon filter in that case. This is the only place * we set the BSS_CHANGED_BEACON_INFO on the non-teardown * path so make sure we only do run this check once we are * assoc. (*iv_recv_mgmt)() will be called before we enter * here so the ni will be updated with information from the * beacon via net80211::sta_recv_mgmt(). We also need to * make sure we do not do it on every beacon we still may * get so only do if something changed. vif->bss_conf.dtim_period * should be 0 as we start up (we also reset it on teardown). * * If we are assoc we need to make sure dtim_period is non-0. * 0 is a reserved value and drivers assume they can DIV by it. * In theory this means we need to wait for the first beacon * before we finalize the vif being assoc. In practise that * is harder until net80211 learns how to. Work around like * this for the moment. */ if (vif->cfg.assoc) { if (vif->bss_conf.dtim_period != ni->ni_dtim_period && ni->ni_dtim_period > 0) { vif->bss_conf.dtim_period = ni->ni_dtim_period; bss_changed |= BSS_CHANGED_BEACON_INFO; } else if (vif->bss_conf.dtim_period == 0) { vif->bss_conf.dtim_period = 1; bss_changed |= BSS_CHANGED_BEACON_INFO; } } vif->bss_conf.sync_dtim_count = ni->ni_dtim_count; vif->bss_conf.sync_tsf = le64toh(ni->ni_tstamp.tsf); /* vif->bss_conf.sync_device_ts = set in linuxkpi_ieee80211_rx. */ #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE) printf("%s:%d [%s:%d] assoc %d aid %d beacon_int %u " "dtim_period %u sync_dtim_count %u sync_tsf %ju " "sync_device_ts %u bss_changed %#010jx\n", __func__, __LINE__, _f, _l, vif->cfg.assoc, vif->cfg.aid, vif->bss_conf.beacon_int, vif->bss_conf.dtim_period, vif->bss_conf.sync_dtim_count, (uintmax_t)vif->bss_conf.sync_tsf, vif->bss_conf.sync_device_ts, (uintmax_t)bss_changed); #endif return (bss_changed); } static void lkpi_stop_hw_scan(struct lkpi_hw *lhw, struct ieee80211_vif *vif) { struct ieee80211_hw *hw; int error; bool cancel; TRACE_SCAN(lhw->ic, "scan_flags %b", lhw->scan_flags, LKPI_LHW_SCAN_BITS); LKPI_80211_LHW_SCAN_LOCK(lhw); cancel = (lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) != 0; LKPI_80211_LHW_SCAN_UNLOCK(lhw); if (!cancel) return; hw = LHW_TO_HW(lhw); IEEE80211_UNLOCK(lhw->ic); wiphy_lock(hw->wiphy); /* Need to cancel the scan. */ lkpi_80211_mo_cancel_hw_scan(hw, vif); wiphy_unlock(hw->wiphy); /* Need to make sure we see ieee80211_scan_completed. */ LKPI_80211_LHW_SCAN_LOCK(lhw); if ((lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) != 0) error = msleep(lhw, &lhw->scan_mtx, 0, "lhwscanstop", hz/2); cancel = (lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) != 0; LKPI_80211_LHW_SCAN_UNLOCK(lhw); IEEE80211_LOCK(lhw->ic); if (cancel) ic_printf(lhw->ic, "%s: failed to cancel scan: %d (%p, %p)\n", __func__, error, lhw, vif); } static void lkpi_hw_conf_idle(struct ieee80211_hw *hw, bool new) { struct lkpi_hw *lhw; int error; bool old; old = hw->conf.flags & IEEE80211_CONF_IDLE; if (old == new) return; hw->conf.flags ^= IEEE80211_CONF_IDLE; error = lkpi_80211_mo_config(hw, IEEE80211_CONF_CHANGE_IDLE); if (error != 0 && error != EOPNOTSUPP) { lhw = HW_TO_LHW(hw); ic_printf(lhw->ic, "ERROR: %s: config %#0x returned %d\n", __func__, IEEE80211_CONF_CHANGE_IDLE, error); } } static enum ieee80211_bss_changed lkpi_disassoc(struct ieee80211_sta *sta, struct ieee80211_vif *vif, struct lkpi_hw *lhw) { enum ieee80211_bss_changed changed; struct lkpi_vif *lvif; changed = 0; sta->aid = 0; if (vif->cfg.assoc) { vif->cfg.assoc = false; vif->cfg.aid = 0; changed |= BSS_CHANGED_ASSOC; IMPROVE(); lkpi_update_mcast_filter(lhw->ic); /* * Executing the bss_info_changed(BSS_CHANGED_ASSOC) with * assoc = false right away here will remove the sta from * firmware for iwlwifi. * We no longer do this but only return the BSS_CHNAGED value. * The caller is responsible for removing the sta gong to * IEEE80211_STA_NOTEXIST and then executing the * bss_info_changed() update. * See DOWN4 for more detailed comment. */ lvif = VIF_TO_LVIF(vif); lvif->beacons = 0; } return (changed); } static void lkpi_wake_tx_queues(struct ieee80211_hw *hw, struct ieee80211_sta *sta, bool dequeue_seen, bool no_emptyq) { struct lkpi_txq *ltxq; int tid; bool ltxq_empty; /* Wake up all queues to know they are allocated in the driver. */ for (tid = 0; tid < nitems(sta->txq); tid++) { if (tid == IEEE80211_NUM_TIDS) { IMPROVE("station specific?"); if (!ieee80211_hw_check(hw, STA_MMPDU_TXQ)) continue; } else if (tid >= hw->queues) continue; if (sta->txq[tid] == NULL) continue; ltxq = TXQ_TO_LTXQ(sta->txq[tid]); if (dequeue_seen && !ltxq->seen_dequeue) continue; LKPI_80211_LTXQ_LOCK(ltxq); ltxq_empty = skb_queue_empty(<xq->skbq); LKPI_80211_LTXQ_UNLOCK(ltxq); if (no_emptyq && ltxq_empty) continue; lkpi_80211_mo_wake_tx_queue(hw, sta->txq[tid], false); } } /* * On the way down from RUN -> ASSOC -> AUTH we may send a DISASSOC or DEAUTH * packet. The problem is that the state machine functions tend to hold the * LHW lock which will prevent lkpi_80211_txq_tx_one() from sending the packet. * We call this after dropping the ic lock and before acquiring the LHW lock. * we make sure no further packets are queued and if they are queued the task * will finish or be cancelled. At the end if a packet is left we manually * send it. scan_to_auth() would re-enable sending if the lsta would be * re-used. */ static void lkpi_80211_flush_tx(struct lkpi_hw *lhw, struct lkpi_sta *lsta) { struct ieee80211_hw *hw; struct mbufq mq; struct mbuf *m; int len; /* There is no lockdep_assert_not_held_wiphy(). */ hw = LHW_TO_HW(lhw); lockdep_assert_not_held(&hw->wiphy->mtx); /* Do not accept any new packets until scan_to_auth or lsta_free(). */ LKPI_80211_LSTA_TXQ_LOCK(lsta); lsta->txq_ready = false; LKPI_80211_LSTA_TXQ_UNLOCK(lsta); while (taskqueue_cancel(taskqueue_thread, &lsta->txq_task, NULL) != 0) taskqueue_drain(taskqueue_thread, &lsta->txq_task); LKPI_80211_LSTA_TXQ_LOCK(lsta); len = mbufq_len(&lsta->txq); if (len <= 0) { LKPI_80211_LSTA_TXQ_UNLOCK(lsta); return; } mbufq_init(&mq, IFQ_MAXLEN); mbufq_concat(&mq, &lsta->txq); LKPI_80211_LSTA_TXQ_UNLOCK(lsta); m = mbufq_dequeue(&mq); while (m != NULL) { lkpi_80211_txq_tx_one(lsta, m); m = mbufq_dequeue(&mq); } } static void lkpi_init_chandef(struct ieee80211com *ic __unused, struct cfg80211_chan_def *chandef, struct linuxkpi_ieee80211_channel *chan, struct ieee80211_channel *c, bool can_ht) { cfg80211_chandef_create(chandef, chan, (can_ht) ? NL80211_CHAN_HT20 : NL80211_CHAN_NO_HT); chandef->center_freq1 = ieee80211_get_channel_center_freq1(c); chandef->center_freq2 = ieee80211_get_channel_center_freq2(c); IMPROVE("Check ht/vht_cap from band not just chan? See lkpi_sta_sync_from_ni..."); #ifdef LKPI_80211_HT if (IEEE80211_IS_CHAN_HT(c)) { if (IEEE80211_IS_CHAN_HT40(c)) chandef->width = NL80211_CHAN_WIDTH_40; else chandef->width = NL80211_CHAN_WIDTH_20; } #endif #ifdef LKPI_80211_VHT if (IEEE80211_IS_CHAN_VHT_5GHZ(c)) { if (IEEE80211_IS_CHAN_VHT80P80(c)) chandef->width = NL80211_CHAN_WIDTH_80P80; else if (IEEE80211_IS_CHAN_VHT160(c)) chandef->width = NL80211_CHAN_WIDTH_160; else if (IEEE80211_IS_CHAN_VHT80(c)) chandef->width = NL80211_CHAN_WIDTH_80; } #endif #ifdef LINUXKPI_DEBUG_80211 if ((linuxkpi_debug_80211 & D80211_CHANDEF) != 0) ic_printf(ic, "%s:%d: chandef %p { chan %p { %u }, " "width %d cfreq1 %u cfreq2 %u punctured %u }\n", __func__, __LINE__, chandef, chandef->chan, chandef->chan->center_freq, chandef->width, chandef->center_freq1, chandef->center_freq2, chandef->punctured); #endif } static uint32_t lkpi_init_chanctx_conf(struct ieee80211_hw *hw, struct cfg80211_chan_def *chandef, struct ieee80211_chanctx_conf *chanctx_conf) { uint32_t changed; lockdep_assert_wiphy(hw->wiphy); changed = 0; chanctx_conf->rx_chains_static = 1; chanctx_conf->rx_chains_dynamic = 1; changed |= IEEE80211_CHANCTX_CHANGE_RX_CHAINS; if (chanctx_conf->radar_enabled != hw->conf.radar_enabled) { chanctx_conf->radar_enabled = hw->conf.radar_enabled; changed |= IEEE80211_CHANCTX_CHANGE_RADAR; } chanctx_conf->def = *chandef; changed |= IEEE80211_CHANCTX_CHANGE_WIDTH; /* One day we should figure this out; is for iwlwifi-only. */ chanctx_conf->min_def = chanctx_conf->def; changed |= IEEE80211_CHANCTX_CHANGE_MIN_WIDTH; /* chanctx_conf->ap = */ return (changed); } static struct lkpi_chanctx * lkpi_alloc_lchanctx(struct ieee80211_hw *hw, struct lkpi_vif *lvif) { struct lkpi_chanctx *lchanctx; lchanctx = malloc(sizeof(*lchanctx) + hw->chanctx_data_size, M_LKPI80211, M_WAITOK | M_ZERO); lchanctx->lvif = lvif; return (lchanctx); } static struct lkpi_chanctx * lkpi_find_lchanctx_reserved(struct ieee80211_hw *hw, struct lkpi_vif *lvif) { struct lkpi_hw *lhw; struct lkpi_chanctx *lchanctx; bool found; lhw = HW_TO_LHW(hw); found = false; rcu_read_lock(); list_for_each_entry_rcu(lchanctx, &lhw->lchanctx_list_reserved, entry) { if (lchanctx->lvif == lvif) { found = true; break; } } rcu_read_unlock(); if (!found) { lchanctx = lkpi_alloc_lchanctx(hw, lvif); list_add_rcu(&lchanctx->entry, &lhw->lchanctx_list_reserved); } return (lchanctx); } static struct ieee80211_chanctx_conf * lkpi_get_chanctx_conf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) { struct ieee80211_chanctx_conf *chanctx_conf; chanctx_conf = rcu_dereference_protected(vif->bss_conf.chanctx_conf, lockdep_is_held(&hw->wiphy->mtx)); if (chanctx_conf == NULL) { struct lkpi_chanctx *lchanctx; struct lkpi_vif *lvif; lvif = VIF_TO_LVIF(vif); lchanctx = lkpi_find_lchanctx_reserved(hw, lvif); KASSERT(lchanctx != NULL, ("%s: hw %p, vif %p no lchanctx\n", __func__, hw, vif)); list_del(&lchanctx->entry); chanctx_conf = &lchanctx->chanctx_conf; } /* else { IMPROVE("diff changes for changed, working on live copy, rcu"); } */ return (chanctx_conf); } static int lkpi_set_chanctx_conf(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_chanctx_conf *chanctx_conf, uint32_t changed, bool changed_set) { struct lkpi_hw *lhw; struct lkpi_chanctx *lchanctx; int error; if (vif->bss_conf.chanctx_conf == chanctx_conf) { if (!changed_set) { IMPROVE("OBSOLETE?"); changed = IEEE80211_CHANCTX_CHANGE_MIN_WIDTH; changed |= IEEE80211_CHANCTX_CHANGE_RADAR; changed |= IEEE80211_CHANCTX_CHANGE_RX_CHAINS; changed |= IEEE80211_CHANCTX_CHANGE_WIDTH; } lkpi_80211_mo_change_chanctx(hw, chanctx_conf, changed); return (0); } lhw = HW_TO_LHW(hw); /* The device is no longer idle. */ IMPROVE("Once we do multi-vif, only do for 1st chanctx"); lkpi_hw_conf_idle(hw, false); error = lkpi_80211_mo_add_chanctx(hw, chanctx_conf); if (error != 0 && error != EOPNOTSUPP) { ic_printf(lhw->ic, "%s:%d: mo_add_chanctx " "failed: %d\n", __func__, __LINE__, error); return (error); } vif->bss_conf.chanreq.oper.chan = chanctx_conf->def.chan; vif->bss_conf.chanreq.oper.width = chanctx_conf->def.width; vif->bss_conf.chanreq.oper.center_freq1 = chanctx_conf->def.center_freq1; vif->bss_conf.chanreq.oper.center_freq2 = chanctx_conf->def.center_freq2; lchanctx = CHANCTX_CONF_TO_LCHANCTX(chanctx_conf); list_add_rcu(&lchanctx->entry, &lhw->lchanctx_list); rcu_assign_pointer(vif->bss_conf.chanctx_conf, chanctx_conf); /* Assign vif chanctx. */ if (error == 0) error = lkpi_80211_mo_assign_vif_chanctx(hw, vif, &vif->bss_conf, chanctx_conf); if (error == EOPNOTSUPP) error = 0; if (error != 0) { ic_printf(lhw->ic, "%s:%d: mo_assign_vif_chanctx " "failed: %d\n", __func__, __LINE__, error); lkpi_80211_mo_remove_chanctx(hw, chanctx_conf); rcu_assign_pointer(vif->bss_conf.chanctx_conf, NULL); lchanctx = CHANCTX_CONF_TO_LCHANCTX(chanctx_conf); list_del(&lchanctx->entry); memset(lchanctx, 0, sizeof(*lchanctx)); lchanctx->lvif = VIF_TO_LVIF(vif); list_add_rcu(&lchanctx->entry, &lhw->lchanctx_list_reserved); } return (error); } static void lkpi_remove_chanctx(struct ieee80211_hw *hw, struct ieee80211_vif *vif) { struct lkpi_hw *lhw; struct ieee80211_chanctx_conf *chanctx_conf; struct lkpi_chanctx *lchanctx; lockdep_assert_wiphy(hw->wiphy); chanctx_conf = rcu_dereference_protected(vif->bss_conf.chanctx_conf, lockdep_is_held(&hw->wiphy->mtx)); if (chanctx_conf == NULL) return; /* Remove vif context. */ lkpi_80211_mo_unassign_vif_chanctx(hw, vif, &vif->bss_conf, chanctx_conf); lkpi_hw_conf_idle(hw, true); /* Remove chan ctx. */ lkpi_80211_mo_remove_chanctx(hw, chanctx_conf); /* Cleanup. */ rcu_assign_pointer(vif->bss_conf.chanctx_conf, NULL); lchanctx = CHANCTX_CONF_TO_LCHANCTX(chanctx_conf); list_del(&lchanctx->entry); lhw = HW_TO_LHW(hw); memset(lchanctx, 0, sizeof(*lchanctx)); lchanctx->lvif = VIF_TO_LVIF(vif); list_add_rcu(&lchanctx->entry, &lhw->lchanctx_list_reserved); } /* -------------------------------------------------------------------------- */ /* Any other options belong here? Check more drivers. */ #define BSS_CHANGED_VIF_CFG_BITS \ (BSS_CHANGED_SSID | BSS_CHANGED_IDLE | BSS_CHANGED_PS | BSS_CHANGED_ASSOC | \ BSS_CHANGED_ARP_FILTER | BSS_CHANGED_MLD_VALID_LINKS | BSS_CHANGED_MLD_TTLM) static void lkpi_bss_info_change(struct ieee80211_hw *hw, struct ieee80211_vif *vif, enum ieee80211_bss_changed bss_changed) { struct lkpi_vif *lvif; enum ieee80211_bss_changed vif_cfg_bits, link_info_bits; if (ieee80211_vif_is_mld(vif)) { TODO("This likely needs a subset only; split up into 3 parts."); } /* Nothing to do? */ if (bss_changed == 0) return; /* * If the vif is not known to the driver there is nothing to notifiy for. * We MUST NOT check for !lvif_bss_synched here (the reasonable it seems) * as we need to execute the update(s) or we will have follow-up issues. */ lvif = VIF_TO_LVIF(vif); if (!lvif->added_to_drv) return; /* * With the advent of MLO bss_conf got split up into vif and link * change notfications, while historically it was one. * We now need to support all possible models. */ vif_cfg_bits = bss_changed & BSS_CHANGED_VIF_CFG_BITS; if (vif_cfg_bits != 0) lkpi_80211_mo_vif_cfg_changed(hw, vif, vif_cfg_bits, false); link_info_bits = bss_changed & ~(BSS_CHANGED_VIF_CFG_BITS); if (link_info_bits != 0) lkpi_80211_mo_link_info_changed(hw, vif, &vif->bss_conf, link_info_bits, 0, false); lkpi_80211_mo_bss_info_changed(hw, vif, &vif->bss_conf, bss_changed); } /* -------------------------------------------------------------------------- */ static int lkpi_sta_state_do_nada(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) { return (0); } /* UP1 */ static int lkpi_sta_init_to_scan(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) { return (lkpi_sta_state_do_nada(vap, nstate, arg)); } /* UP2 */ static int lkpi_sta_scan_to_auth(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) { struct linuxkpi_ieee80211_channel *chan; struct cfg80211_chan_def chandef; struct ieee80211_chanctx_conf *chanctx_conf; struct lkpi_hw *lhw; struct ieee80211_hw *hw; struct lkpi_vif *lvif; struct ieee80211_vif *vif; struct ieee80211_node *ni; struct lkpi_sta *lsta; enum ieee80211_bss_changed bss_changed; struct ieee80211_prep_tx_info prep_tx_info; uint32_t changed; int error; bool synched, can_ht; /* * In here we use vap->iv_bss until lvif->lvif_bss is set. * For all later (STATE >= AUTH) functions we need to use the lvif * cache which will be tracked even through (*iv_update_bss)(). */ if (vap->iv_bss == NULL) { ic_printf(vap->iv_ic, "%s: no iv_bss for vap %p\n", __func__, vap); return (EINVAL); } /* * Keep the ni alive locally. In theory (and practice) iv_bss can change * once we unlock here. This is due to net80211 allowing state changes * and new join1() despite having an active node as well as due to * the fact that the iv_bss can be swapped under the hood in (*iv_update_bss). */ ni = ieee80211_ref_node(vap->iv_bss); if (ni->ni_chan == NULL || ni->ni_chan == IEEE80211_CHAN_ANYC) { ic_printf(vap->iv_ic, "%s: no channel set for iv_bss ni %p " "on vap %p\n", __func__, ni, vap); ieee80211_free_node(ni); /* Error handling for the local ni. */ return (EINVAL); } lhw = vap->iv_ic->ic_softc; chan = lkpi_find_lkpi80211_chan(lhw, ni->ni_chan); if (chan == NULL) { ic_printf(vap->iv_ic, "%s: failed to get LKPI channel from " "iv_bss ni %p on vap %p\n", __func__, ni, vap); ieee80211_free_node(ni); /* Error handling for the local ni. */ return (ESRCH); } hw = LHW_TO_HW(lhw); lvif = VAP_TO_LVIF(vap); vif = LVIF_TO_VIF(lvif); LKPI_80211_LVIF_LOCK(lvif); /* XXX-BZ KASSERT later? */ if (lvif->lvif_bss_synched || lvif->lvif_bss != NULL) { ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p " "lvif_bss->ni %p synched %d\n", __func__, __LINE__, lvif, vap, vap->iv_bss, lvif->lvif_bss, (lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL, lvif->lvif_bss_synched); LKPI_80211_LVIF_UNLOCK(lvif); ieee80211_free_node(ni); /* Error handling for the local ni. */ return (EBUSY); } LKPI_80211_LVIF_UNLOCK(lvif); IEEE80211_UNLOCK(vap->iv_ic); wiphy_lock(hw->wiphy); /* Add chanctx (or if exists, change it). */ chanctx_conf = lkpi_get_chanctx_conf(hw, vif); KASSERT(ni->ni_chan != NULL && ni->ni_chan != IEEE80211_CHAN_ANYC, ("%s:%d: ni %p ni_chan %p\n", __func__, __LINE__, ni, ni->ni_chan)); #ifdef LKPI_80211_HT can_ht = (vap->iv_ic->ic_flags_ht & IEEE80211_FHT_HT) != 0; #else can_ht = false; #endif lkpi_init_chandef(vap->iv_ic, &chandef, chan, ni->ni_chan, can_ht); hw->conf.radar_enabled = ((chan->flags & IEEE80211_CHAN_RADAR) != 0) ? true : false; hw->conf.chandef = chandef; vif->bss_conf.chanreq.oper = hw->conf.chandef; #ifdef LINUXKPI_DEBUG_80211 if ((linuxkpi_debug_80211 & D80211_CHANDEF) != 0) ic_printf(vap->iv_ic, "%s:%d: hw->conf.chandef %p = chandef %p = " "vif->bss_conf.chanreq.oper %p\n", __func__, __LINE__, &hw->conf.chandef, &chandef, &vif->bss_conf.chanreq.oper); #endif changed = lkpi_init_chanctx_conf(hw, &chandef, chanctx_conf); /* Responder ... */ /* Set bss info (bss_info_changed). */ bss_changed = 0; IEEE80211_ADDR_COPY(vif->cfg.ap_addr, ni->ni_bssid); vif->bss_conf.bssid = ni->ni_bssid; bss_changed |= BSS_CHANGED_BSSID; vif->bss_conf.txpower = ni->ni_txpower; bss_changed |= BSS_CHANGED_TXPOWER; vif->cfg.idle = false; bss_changed |= BSS_CHANGED_IDLE; /* vif->bss_conf.basic_rates ? Where exactly? */ lvif->beacons = 0; /* Should almost assert it is this. */ vif->cfg.assoc = false; vif->cfg.aid = 0; bss_changed |= lkpi_update_dtim_tsf(vif, ni, vap, __func__, __LINE__); error = lkpi_set_chanctx_conf(hw, vif, chanctx_conf, changed, true); if (error != 0) goto out; IMPROVE("update radiotap chan fields too"); /* RATES */ IMPROVE("bss info: not all needs to come now and rates are missing"); lkpi_bss_info_change(hw, vif, bss_changed); /* * Given ni and lsta are 1:1 from alloc to free we can assert that * ni always has lsta data attach despite net80211 node swapping * under the hoods. */ KASSERT(ni->ni_drv_data != NULL, ("%s: ni %p ni_drv_data %p\n", __func__, ni, ni->ni_drv_data)); lsta = ni->ni_drv_data; /* Insert the [l]sta into the list of known stations. */ list_add_tail(&lsta->lsta_list, &lvif->lsta_list); /* Add (or adjust) sta and change state (from NOTEXIST) to NONE. */ KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni)); KASSERT(lsta->state == IEEE80211_STA_NOTEXIST, ("%s: lsta %p state not " "NOTEXIST: %#x\n", __func__, lsta, lsta->state)); error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_NONE); if (error != 0) { IMPROVE("do we need to undo the chan ctx?"); ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(NONE) " "failed: %d\n", __func__, __LINE__, error); goto out; } #if 0 lsta->added_to_drv = true; /* mo manages. */ #endif lkpi_lsta_dump(lsta, ni, __func__, __LINE__); #if 0 /* * Wakeup all queues now that sta is there so we have as much time to * possibly prepare the queue in the driver to be ready for the 1st * packet; lkpi_80211_txq_tx_one() still has a workaround as there * is no guarantee or way to check. * XXX-BZ and by now we know that this does not work on all drivers * for all queues. */ lkpi_wake_tx_queues(hw, LSTA_TO_STA(lsta), false, false); #endif /* Start mgd_prepare_tx. */ memset(&prep_tx_info, 0, sizeof(prep_tx_info)); prep_tx_info.duration = PREP_TX_INFO_DURATION; /* SAE */ prep_tx_info.subtype = IEEE80211_STYPE_AUTH; prep_tx_info.link_id = 0; lkpi_80211_mo_mgd_prepare_tx(hw, vif, &prep_tx_info); lsta->in_mgd = true; /* * What is going to happen next: * - .. we should end up in "auth_to_assoc" * - event_callback * - update sta_state (NONE to AUTH) * - mgd_complete_tx * (ideally we'd do that on a callback for something else ...) */ wiphy_unlock(hw->wiphy); IEEE80211_LOCK(vap->iv_ic); LKPI_80211_LVIF_LOCK(lvif); /* Re-check given (*iv_update_bss) could have happened while we were unlocked. */ if (lvif->lvif_bss_synched || lvif->lvif_bss != NULL || lsta->ni != vap->iv_bss) ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p " "lvif_bss->ni %p synched %d, ni %p lsta %p\n", __func__, __LINE__, lvif, vap, vap->iv_bss, lvif->lvif_bss, (lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL, lvif->lvif_bss_synched, ni, lsta); /* * Reference the "ni" for caching the lsta/ni in lvif->lvif_bss. * Given we cache lsta we use lsta->ni instead of ni here (even though * lsta->ni == ni) to be distinct from the rest of the code where we do * assume that ni == vap->iv_bss which it may or may not be. * So do NOT use iv_bss here anymore as that may have diverged from our * function local ni already while ic was unlocked and would lead to * inconsistencies. Go and see if we lost a race and do not update * lvif_bss_synched in that case. */ ieee80211_ref_node(lsta->ni); lvif->lvif_bss = lsta; if (lsta->ni == vap->iv_bss) { lvif->lvif_bss_synched = synched = true; } else { /* Set to un-synched no matter what. */ lvif->lvif_bss_synched = synched = false; /* * We do not error as someone has to take us down. * If we are followed by a 2nd, new net80211::join1() going to * AUTH lkpi_sta_a_to_a() will error, lkpi_sta_auth_to_{scan,init}() * will take the lvif->lvif_bss node down eventually. * What happens with the vap->iv_bss node will entirely be up * to net80211 as we never used the node beyond alloc()/free() * and we do not hold an extra reference for that anymore given * ni : lsta == 1:1. * Problem is if we do not error a MGMT/AUTH frame will be * sent from net80211::sta_newstate(); disable lsta queue below. */ } LKPI_80211_LVIF_UNLOCK(lvif); /* * Make sure in case the sta did not change and we re-added it, * that we can tx again but only if the vif/iv_bss are in sync. * Otherwise this should prevent the MGMT/AUTH frame from being * sent triggering a warning in iwlwifi. */ LKPI_80211_LSTA_TXQ_LOCK(lsta); lsta->txq_ready = synched; LKPI_80211_LSTA_TXQ_UNLOCK(lsta); goto out_relocked; out: wiphy_unlock(hw->wiphy); IEEE80211_LOCK(vap->iv_ic); out_relocked: /* * Release the reference that kept the ni stable locally * during the work of this function. */ if (ni != NULL) ieee80211_free_node(ni); return (error); } /* UP3.1 */ static int lkpi_sta_auth_to_assoc(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) { struct lkpi_hw *lhw; struct ieee80211_hw *hw; struct lkpi_vif *lvif; struct ieee80211_vif *vif; struct lkpi_sta *lsta; struct ieee80211_prep_tx_info prep_tx_info; int error; lhw = vap->iv_ic->ic_softc; hw = LHW_TO_HW(lhw); lvif = VAP_TO_LVIF(vap); vif = LVIF_TO_VIF(lvif); IEEE80211_UNLOCK(vap->iv_ic); wiphy_lock(hw->wiphy); LKPI_80211_LVIF_LOCK(lvif); /* XXX-BZ KASSERT later? */ if (!lvif->lvif_bss_synched || lvif->lvif_bss == NULL) { #ifdef LINUXKPI_DEBUG_80211 ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p " "lvif_bss->ni %p synched %d\n", __func__, __LINE__, lvif, vap, vap->iv_bss, lvif->lvif_bss, (lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL, lvif->lvif_bss_synched); #endif error = ENOTRECOVERABLE; LKPI_80211_LVIF_UNLOCK(lvif); goto out; } lsta = lvif->lvif_bss; LKPI_80211_LVIF_UNLOCK(lvif); KASSERT(lsta != NULL, ("%s: lsta %p\n", __func__, lsta)); /* Finish auth. */ IMPROVE("event callback"); /* Update sta_state (NONE to AUTH). */ KASSERT(lsta->state == IEEE80211_STA_NONE, ("%s: lsta %p state not " "NONE: %#x\n", __func__, lsta, lsta->state)); error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_AUTH); if (error != 0) { ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(AUTH) " "failed: %d\n", __func__, __LINE__, error); goto out; } /* End mgd_complete_tx. */ if (lsta->in_mgd) { memset(&prep_tx_info, 0, sizeof(prep_tx_info)); prep_tx_info.subtype = IEEE80211_STYPE_AUTH; prep_tx_info.success = true; lkpi_80211_mo_mgd_complete_tx(hw, vif, &prep_tx_info); lsta->in_mgd = false; } /* Now start assoc. unless nstate=RUN (auth_to_run). */ /* Start mgd_prepare_tx. */ if (nstate == IEEE80211_S_ASSOC && !lsta->in_mgd) { memset(&prep_tx_info, 0, sizeof(prep_tx_info)); prep_tx_info.subtype = IEEE80211_STYPE_ASSOC_REQ; prep_tx_info.link_id = 0; lkpi_80211_mo_mgd_prepare_tx(hw, vif, &prep_tx_info); lsta->in_mgd = true; } #if 0 /* We do not yet have a packet to go out. */ /* Wake tx queue to get packet out. */ lkpi_wake_tx_queues(hw, LSTA_TO_STA(lsta), false, true); #endif /* * .. we end up in "assoc_to_run" * - update sta_state (AUTH to ASSOC) * - conf_tx [all] * - bss_info_changed (assoc, aid, ssid, ..) * - change_chanctx (if needed) * - event_callback * - mgd_complete_tx */ out: wiphy_unlock(hw->wiphy); IEEE80211_LOCK(vap->iv_ic); return (error); } static int lkpi_sta_assoc_to_run(struct ieee80211vap *, enum ieee80211_state, int); /* UP3.2 */ static int lkpi_sta_auth_to_run(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) { int error; error = lkpi_sta_auth_to_assoc(vap, nstate, arg); if (error == 0) error = lkpi_sta_assoc_to_run(vap, nstate, arg); return (error); } /* UP4 */ static int lkpi_sta_assoc_to_run(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) { struct lkpi_hw *lhw; struct ieee80211_hw *hw; struct lkpi_vif *lvif; struct ieee80211_vif *vif; struct ieee80211_node *ni; struct lkpi_sta *lsta; struct ieee80211_sta *sta; struct ieee80211_prep_tx_info prep_tx_info; enum ieee80211_bss_changed bss_changed; int error; lhw = vap->iv_ic->ic_softc; hw = LHW_TO_HW(lhw); lvif = VAP_TO_LVIF(vap); vif = LVIF_TO_VIF(lvif); IEEE80211_UNLOCK(vap->iv_ic); wiphy_lock(hw->wiphy); LKPI_80211_LVIF_LOCK(lvif); /* XXX-BZ KASSERT later? */ if (!lvif->lvif_bss_synched || lvif->lvif_bss == NULL) { #ifdef LINUXKPI_DEBUG_80211 ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p " "lvif_bss->ni %p synched %d\n", __func__, __LINE__, lvif, vap, vap->iv_bss, lvif->lvif_bss, (lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL, lvif->lvif_bss_synched); #endif LKPI_80211_LVIF_UNLOCK(lvif); error = ENOTRECOVERABLE; goto out; } lsta = lvif->lvif_bss; LKPI_80211_LVIF_UNLOCK(lvif); KASSERT(lsta != NULL && lsta->ni != NULL, ("%s: lsta %p ni %p " "lvif %p vap %p\n", __func__, lsta, (lsta != NULL) ? lsta->ni : NULL, lvif, vap)); ni = lsta->ni; /* Reference held for lvif_bss. */ IMPROVE("ponder some of this moved to ic_newassoc, scan_assoc_success, " "and to lesser extend ieee80211_notify_node_join"); /* Finish assoc. (even if this is auth_to_run!) */ /* Update sta_state (AUTH to ASSOC) and set aid. */ KASSERT(lsta->state == IEEE80211_STA_AUTH, ("%s: lsta %p state not " "AUTH: %#x\n", __func__, lsta, lsta->state)); sta = LSTA_TO_STA(lsta); sta->aid = IEEE80211_NODE_AID(ni); #ifdef LKPI_80211_WME if (vap->iv_flags & IEEE80211_F_WME) sta->wme = true; #endif error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_ASSOC); if (error != 0) { ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(ASSOC) " "failed: %d\n", __func__, __LINE__, error); goto out; } IMPROVE("wme / conf_tx [all]"); /* Update bss info (bss_info_changed) (assoc, aid, ..). */ bss_changed = 0; #ifdef LKPI_80211_WME bss_changed |= lkpi_wme_update(lhw, vap, true); #endif if (!vif->cfg.assoc || vif->cfg.aid != IEEE80211_NODE_AID(ni)) { lvif->beacons = 0; vif->cfg.assoc = true; vif->cfg.aid = IEEE80211_NODE_AID(ni); bss_changed |= BSS_CHANGED_ASSOC; } /* We set SSID but this is not BSSID! */ vif->cfg.ssid_len = ni->ni_esslen; memcpy(vif->cfg.ssid, ni->ni_essid, ni->ni_esslen); if ((vap->iv_flags & IEEE80211_F_SHPREAMBLE) != vif->bss_conf.use_short_preamble) { vif->bss_conf.use_short_preamble ^= 1; /* bss_changed |= BSS_CHANGED_??? */ } if ((vap->iv_flags & IEEE80211_F_SHSLOT) != vif->bss_conf.use_short_slot) { vif->bss_conf.use_short_slot ^= 1; /* bss_changed |= BSS_CHANGED_??? */ } if ((ni->ni_flags & IEEE80211_NODE_QOS) != vif->bss_conf.qos) { vif->bss_conf.qos ^= 1; bss_changed |= BSS_CHANGED_QOS; } bss_changed |= lkpi_update_dtim_tsf(vif, ni, vap, __func__, __LINE__); lkpi_bss_info_change(hw, vif, bss_changed); /* - change_chanctx (if needed) * - event_callback */ /* End mgd_complete_tx. (we do not have to check ostate == IEEE80211_S_ASSOC). */ if (lsta->in_mgd) { memset(&prep_tx_info, 0, sizeof(prep_tx_info)); prep_tx_info.subtype = IEEE80211_STYPE_ASSOC_REQ; prep_tx_info.success = true; /* Needs vif->cfg.assoc set! */ prep_tx_info.link_id = 0; lkpi_80211_mo_mgd_complete_tx(hw, vif, &prep_tx_info); lsta->in_mgd = false; } /* * And then: * - (more packets)? * - set_key * - set_default_unicast_key * - set_key (?) * - ipv6_addr_change (?) */ if (!ieee80211_node_is_authorized(ni)) { IMPROVE("net80211 does not consider node authorized"); } IMPROVE("Is this the right spot, has net80211 done all updates already?"); lkpi_sta_sync_from_ni(hw, vif, sta, ni, true); /* Update thresholds. */ hw->wiphy->frag_threshold = vap->iv_fragthreshold; lkpi_80211_mo_set_frag_threshold(hw, vap->iv_fragthreshold); hw->wiphy->rts_threshold = vap->iv_rtsthreshold; lkpi_80211_mo_set_rts_threshold(hw, vap->iv_rtsthreshold); /* Update sta_state (ASSOC to AUTHORIZED). */ KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni)); KASSERT(lsta->state == IEEE80211_STA_ASSOC, ("%s: lsta %p state not " "ASSOC: %#x\n", __func__, lsta, lsta->state)); error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_AUTHORIZED); if (error != 0) { IMPROVE("undo some changes?"); ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(AUTHORIZED) " "failed: %d\n", __func__, __LINE__, error); goto out; } /* - drv_config (?) * - bss_info_changed * - set_rekey_data (?) * * And now we should be passing packets. */ IMPROVE("Need that bssid setting, and the keys"); bss_changed = 0; bss_changed |= lkpi_update_dtim_tsf(vif, ni, vap, __func__, __LINE__); lkpi_bss_info_change(hw, vif, bss_changed); /* Prepare_multicast && configure_filter. */ lkpi_update_mcast_filter(vap->iv_ic); out: wiphy_unlock(hw->wiphy); IEEE80211_LOCK(vap->iv_ic); return (error); } /* * DOWN1 * "to assoc" means we are going back to State 2 from State 4[/3]. * This means ni still is authenticated, so we keep sta, chanctx, .. * We will send a (Re)Assoc Request in case net80211 handles roadming. * Note: this can be called as part of a DEAUTH going to State 1 as well, * so for RoC prep_tx_info we need to check nstate (see run_to_{auth,scan,init}). */ static int lkpi_sta_run_to_assoc(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) { struct lkpi_hw *lhw; struct ieee80211_hw *hw; struct lkpi_vif *lvif; struct ieee80211_vif *vif; struct ieee80211_node *ni; struct lkpi_sta *lsta; struct ieee80211_sta *sta; struct ieee80211_prep_tx_info prep_tx_info; #if 0 enum ieee80211_bss_changed bss_changed; #endif struct ieee80211_rx_ampdu *rap; int error; lhw = vap->iv_ic->ic_softc; hw = LHW_TO_HW(lhw); lvif = VAP_TO_LVIF(vap); vif = LVIF_TO_VIF(lvif); IEEE80211_UNLOCK(vap->iv_ic); wiphy_lock(hw->wiphy); LKPI_80211_LVIF_LOCK(lvif); #ifdef LINUXKPI_DEBUG_80211 /* XXX-BZ KASSERT later; state going down so no action. */ if (lvif->lvif_bss == NULL) ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p " "lvif_bss->ni %p synched %d\n", __func__, __LINE__, lvif, vap, vap->iv_bss, lvif->lvif_bss, (lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL, lvif->lvif_bss_synched); #endif lsta = lvif->lvif_bss; LKPI_80211_LVIF_UNLOCK(lvif); KASSERT(lsta != NULL && lsta->ni != NULL, ("%s: lsta %p ni %p " "lvif %p vap %p\n", __func__, lsta, (lsta != NULL) ? lsta->ni : NULL, lvif, vap)); ni = lsta->ni; /* Reference held for lvif_bss. */ sta = LSTA_TO_STA(lsta); lkpi_lsta_dump(lsta, ni, __func__, __LINE__); /* flush, drop. */ lkpi_80211_mo_flush(hw, vif, nitems(sta->txq), true); /* We should make this a KASSERT. */ if (lsta->in_mgd) { ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p lsta %p in_mgd\n", __func__, __LINE__, lvif, vap, lsta); } /* * Problem is that we should hook into the tx/rx flow and not * try to re-model the state machine parts. We may miss a SME * triggered frame this way. */ memset(&prep_tx_info, 0, sizeof(prep_tx_info)); if (nstate == IEEE80211_S_ASSOC) { if (vap->iv_roaming == IEEE80211_ROAMING_AUTO) { if (arg) prep_tx_info.subtype = IEEE80211_STYPE_REASSOC_REQ; else prep_tx_info.subtype = IEEE80211_STYPE_ASSOC_REQ; } else { /* wpa_supplicant upon RTM_IEEE80211_LEAVE. */ prep_tx_info.subtype = IEEE80211_STYPE_DISASSOC; } } else prep_tx_info.subtype = IEEE80211_STYPE_DEAUTH; prep_tx_info.was_assoc = true; prep_tx_info.link_id = 0; lkpi_80211_mo_mgd_prepare_tx(hw, vif, &prep_tx_info); lsta->in_mgd = true; wiphy_unlock(hw->wiphy); IEEE80211_LOCK(vap->iv_ic); /* Call iv_newstate first so we get potential (RE-)ASSOC/DEAUTH? packet out. */ error = lvif->iv_newstate(vap, nstate, arg); if (error != 0) { ic_printf(vap->iv_ic, "%s:%d: iv_newstate(%p, %d, %d) " "failed: %d\n", __func__, __LINE__, vap, nstate, arg, error); goto outni; } /* Stop any BA sessions if still active. */ for (int rapn = 0; rapn < WME_NUM_TID; rapn++) { rap = &ni->ni_rx_ampdu[rapn]; if ((rap->rxa_flags & IEEE80211_AGGR_RUNNING) == 0) continue; vap->iv_ic->ic_ampdu_rx_stop(ni, rap); } IEEE80211_UNLOCK(vap->iv_ic); /* Ensure the packets get out. */ lkpi_80211_flush_tx(lhw, lsta); wiphy_lock(hw->wiphy); lkpi_lsta_dump(lsta, ni, __func__, __LINE__); /* Wake tx queues to get packet(s) out. */ lkpi_wake_tx_queues(hw, sta, false, true); /* flush, no drop */ lkpi_80211_mo_flush(hw, vif, nitems(sta->txq), false); /* End mgd_complete_tx. */ /* We should make this a KASSERT. */ if (!lsta->in_mgd) { ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p lsta %p !in_mgd\n", __func__, __LINE__, lvif, vap, lsta); } lkpi_80211_mo_mgd_complete_tx(hw, vif, &prep_tx_info); lsta->in_mgd = false; #if 0 /* sync_rx_queues */ lkpi_80211_mo_sync_rx_queues(hw); /* sta_pre_rcu_remove */ lkpi_80211_mo_sta_pre_rcu_remove(hw, vif, sta); #endif /* Take the station down. */ /* Adjust sta and change state (from AUTHORIZED) to ASSOC. */ KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni)); KASSERT(lsta->state == IEEE80211_STA_AUTHORIZED, ("%s: lsta %p state not " "AUTHORIZED: %#x\n", __func__, lsta, lsta->state)); error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_ASSOC); if (error != 0) { ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(ASSOC) " "failed: %d\n", __func__, __LINE__, error); goto out; } lkpi_lsta_dump(lsta, ni, __func__, __LINE__); #ifdef LKPI_80211_HW_CRYPTO if (lkpi_hwcrypto) { error = lkpi_sta_del_keys(hw, vif, lsta); if (error != 0) { ic_printf(vap->iv_ic, "%s:%d: lkpi_sta_del_keys " "failed: %d\n", __func__, __LINE__, error); /* * Either drv/fw will crash or cleanup itself, * otherwise net80211 will delete the keys (at a * less appropriate time). */ /* goto out; */ } } #endif /* Update sta_state (ASSOC to AUTH). */ KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni)); KASSERT(lsta->state == IEEE80211_STA_ASSOC, ("%s: lsta %p state not " "ASSOC: %#x\n", __func__, lsta, lsta->state)); error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_AUTH); if (error != 0) { ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(AUTH) " "failed: %d\n", __func__, __LINE__, error); goto out; } lkpi_lsta_dump(lsta, ni, __func__, __LINE__); #if 0 /* Update bss info (bss_info_changed) (assoc, aid, ..). */ /* See comment in DOWN4. */ lkpi_disassoc(sta, vif, lhw); #endif error = EALREADY; out: wiphy_unlock(hw->wiphy); IEEE80211_LOCK(vap->iv_ic); outni: return (error); } /* * DOWN2 * We are in state 2 and go back to state 1 and will try to auth again * (to IEEE80211_S_AUTH in FreeBSD means "try to auth"). This should be * like scan_to_auth but that we keep the "ni" and with that chanctx/bssid, * which essentially makes this "a_to_a" in LinuxKPI. */ static int lkpi_sta_assoc_to_auth(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) { struct lkpi_hw *lhw; struct ieee80211_hw *hw; struct lkpi_vif *lvif; struct ieee80211_vif *vif; struct ieee80211_node *ni; struct lkpi_sta *lsta; struct ieee80211_prep_tx_info prep_tx_info; int error; lhw = vap->iv_ic->ic_softc; hw = LHW_TO_HW(lhw); lvif = VAP_TO_LVIF(vap); vif = LVIF_TO_VIF(lvif); IEEE80211_UNLOCK(vap->iv_ic); wiphy_lock(hw->wiphy); LKPI_80211_LVIF_LOCK(lvif); #ifdef LINUXKPI_DEBUG_80211 /* XXX-BZ KASSERT later; state going down so no action. */ if (lvif->lvif_bss == NULL) ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p " "lvif_bss->ni %p synched %d\n", __func__, __LINE__, lvif, vap, vap->iv_bss, lvif->lvif_bss, (lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL, lvif->lvif_bss_synched); #endif lsta = lvif->lvif_bss; LKPI_80211_LVIF_UNLOCK(lvif); KASSERT(lsta != NULL && lsta->ni != NULL, ("%s: lsta %p ni %p " "lvif %p vap %p\n", __func__, lsta, (lsta != NULL) ? lsta->ni : NULL, lvif, vap)); ni = lsta->ni; /* Reference held for lvif_bss. */ lkpi_lsta_dump(lsta, ni, __func__, __LINE__); /* End mgd_complete_tx. */ if (lsta->in_mgd && vap->iv_state == IEEE80211_S_ASSOC) { memset(&prep_tx_info, 0, sizeof(prep_tx_info)); prep_tx_info.subtype = IEEE80211_STYPE_ASSOC_REQ; prep_tx_info.link_id = 0; lkpi_80211_mo_mgd_complete_tx(hw, vif, &prep_tx_info); lsta->in_mgd = false; } else if (lsta->in_mgd) { ic_printf(vap->iv_ic, "%s:%d: in_mgd %d (%s) -> %d (%s) %d\n", __func__, __LINE__, vap->iv_state, ieee80211_state_name[vap->iv_state], nstate, ieee80211_state_name[nstate], arg); } /* Take the station down. */ /* Update sta_state (AUTH to NONE). */ KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni)); KASSERT(lsta->state == IEEE80211_STA_AUTH, ("%s: lsta %p state not " "AUTH: %#x\n", __func__, lsta, lsta->state)); error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_NONE); if (error != 0) { ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(NONE) " "failed: %d\n", __func__, __LINE__, error); goto out; } lkpi_lsta_dump(lsta, ni, __func__, __LINE__); out: wiphy_unlock(hw->wiphy); IEEE80211_LOCK(vap->iv_ic); return (error); } /* * DOWN3 * We are in state 1. Either auth timed out (arg != 0) or we have an internal * state change forcing us to give up trying to authenticate. * Cleanup and remove chanctx, sta, ... */ static int lkpi_sta_auth_to_scan(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) { struct lkpi_hw *lhw; struct ieee80211_hw *hw; struct lkpi_vif *lvif; struct ieee80211_vif *vif; struct ieee80211_node *ni; struct lkpi_sta *lsta; struct ieee80211_sta *sta; struct ieee80211_prep_tx_info prep_tx_info; enum ieee80211_bss_changed bss_changed; int error; lhw = vap->iv_ic->ic_softc; hw = LHW_TO_HW(lhw); lvif = VAP_TO_LVIF(vap); vif = LVIF_TO_VIF(lvif); IEEE80211_UNLOCK(vap->iv_ic); wiphy_lock(hw->wiphy); LKPI_80211_LVIF_LOCK(lvif); /* * XXX-BZ KASSERT later; state going down so no action in theory * but try to avoid a NULL-pointer derref for now and gracefully * fail for non-debug kernels. */ if (lvif->lvif_bss == NULL) { ic_printf(vap->iv_ic, "%s:%d: ERROR: lvif %p vap %p iv_bss %p " "lvif_bss %p lvif_bss->ni %p synched %d; " "expect follow-up problems\n", __func__, __LINE__, lvif, vap, vap->iv_bss, lvif->lvif_bss, (lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL, lvif->lvif_bss_synched); LKPI_80211_LVIF_UNLOCK(lvif); /* * This will likely lead to a firmware crash (if there * was not one before already) and need a * ieee80211_restart_hw() but still better than a panic * for users as they can at least recover. */ error = ENOTRECOVERABLE; goto out; } lsta = lvif->lvif_bss; LKPI_80211_LVIF_UNLOCK(lvif); KASSERT(lsta != NULL && lsta->ni != NULL, ("%s: lsta %p ni %p " "lvif %p vap %p\n", __func__, lsta, (lsta != NULL) ? lsta->ni : NULL, lvif, vap)); ni = lsta->ni; /* Reference held for lvif_bss. */ sta = LSTA_TO_STA(lsta); lkpi_lsta_dump(lsta, ni, __func__, __LINE__); /* flush, drop. */ lkpi_80211_mo_flush(hw, vif, nitems(sta->txq), true); /* Wake tx queues to get packet(s) out. */ lkpi_wake_tx_queues(hw, sta, false, true); /* flush, no drop */ lkpi_80211_mo_flush(hw, vif, nitems(sta->txq), false); /* End mgd_complete_tx. */ if (lsta->in_mgd) { memset(&prep_tx_info, 0, sizeof(prep_tx_info)); prep_tx_info.subtype = IEEE80211_STYPE_AUTH; prep_tx_info.link_id = 0; lkpi_80211_mo_mgd_complete_tx(hw, vif, &prep_tx_info); lsta->in_mgd = false; } /* sync_rx_queues */ lkpi_80211_mo_sync_rx_queues(hw); #ifdef LKPI_80211_HW_CRYPTO if (lkpi_hwcrypto) { error = lkpi_sta_del_keys(hw, vif, lsta); if (error != 0) { ic_printf(vap->iv_ic, "%s:%d: lkpi_sta_del_keys " "failed: %d\n", __func__, __LINE__, error); /* * Either drv/fw will crash or cleanup itself, * otherwise net80211 will delete the keys (at a * less appropriate time). */ /* goto out; */ } } #endif /* sta_pre_rcu_remove */ lkpi_80211_mo_sta_pre_rcu_remove(hw, vif, sta); synchronize_net(); /* Take the station down. */ bss_changed = 0; /* * Start updating bss info (*bss_info_changed) (assoc, aid, ..). * * One would expect this to happen when going off AUTHORIZED but * not so. * * Immediately issuing the (*bss_info_changed) used to also remove the * sta from firmware for iwlwifi; or we have problems with the sta * silently not being removed and then crash upon the next sta add. * Neither seems to be the case or a problem still. * * Contrary for BE200 (iwlwifi/mld) if we do not issue the * (*vif_cfg_change) to tell FW that we are no longer assoc * it will crash now upon sta rm. So the order now is as we once * expected it: * * 1) lkpi_disassoc(): set vif->cfg.assoc = false and .aid=0 * 2) add the remaining BSS_CHANGED changes and call (*bss_info_changed) * (which may be split up into (*vif_cfg_change) and * (*link_info_changed) for more modern drivers). * 3) call the last sta_state update -> IEEE80211_STA_NOTEXIST * (removes the sta given assoc is false) and tidy up our lists. * 4) call unassign_vif_chanctx * 5) call lkpi_hw_conf_idle * 6) call remove_chanctx * * Note: vif->driver_flags & IEEE80211_VIF_REMOVE_AP_AFTER_DISASSOC * might change this. */ bss_changed |= lkpi_disassoc(sta, vif, lhw); lkpi_lsta_dump(lsta, ni, __func__, __LINE__); IMPROVE("Any bss_info changes to announce?"); vif->bss_conf.qos = false; bss_changed |= BSS_CHANGED_QOS; vif->cfg.ssid_len = 0; memset(vif->cfg.ssid, '\0', sizeof(vif->cfg.ssid)); IEEE80211_ADDR_COPY(vif->cfg.ap_addr, ieee80211broadcastaddr); bss_changed |= BSS_CHANGED_BSSID; vif->bss_conf.use_short_preamble = false; /* XXX BSS_CHANGED_???? */ vif->bss_conf.dtim_period = 0; /* go back to 0. */ bss_changed |= BSS_CHANGED_BEACON_INFO; lkpi_bss_info_change(hw, vif, bss_changed); /* Adjust sta and change state (from NONE) to NOTEXIST. */ KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni)); KASSERT(lsta->state == IEEE80211_STA_NONE, ("%s: lsta %p state not " "NONE: %#x, nstate %d arg %d\n", __func__, lsta, lsta->state, nstate, arg)); error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_NOTEXIST); if (error != 0) { IMPROVE("do we need to undo the chan ctx?"); ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(NOTEXIST) " "failed: %d\n", __func__, __LINE__, error); goto out; } lkpi_lsta_remove(lsta, lvif); lkpi_lsta_dump(lsta, ni, __func__, __LINE__); LKPI_80211_LVIF_LOCK(lvif); /* Remove ni reference for this cache of lsta. */ lvif->lvif_bss = NULL; lvif->lvif_bss_synched = false; LKPI_80211_LVIF_UNLOCK(lvif); /* conf_tx */ lkpi_remove_chanctx(hw, vif); out: wiphy_unlock(hw->wiphy); IEEE80211_LOCK(vap->iv_ic); if (error == 0) { /* * We do this outside the wiphy lock as net80211::node_free() may call * into crypto code to delete keys and we have a recursed on * non-recursive sx panic. Also only do this if we get here w/o error. * * The very last release the reference on the ni for the ni/lsta on * lvif->lvif_bss. Upon return from this both ni and lsta are invalid * and potentially freed. */ ieee80211_free_node(ni); } return (error); } /* DOWN4 */ static int lkpi_sta_scan_to_init(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) { /* lkpi_iv_newstate() handles the stop scan case in common code. */ return (lkpi_sta_state_do_nada(vap, nstate, arg)); } /* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ static int lkpi_sta_auth_to_init(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) { int error; error = lkpi_sta_auth_to_scan(vap, nstate, arg); if (error == 0) error = lkpi_sta_scan_to_init(vap, nstate, arg); return (error); } /* auth_to_auth, assoc_to_assoc. */ static int lkpi_sta_a_to_a(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) { struct lkpi_hw *lhw; struct ieee80211_hw *hw; struct lkpi_vif *lvif; struct ieee80211_vif *vif; struct lkpi_sta *lsta; struct ieee80211_prep_tx_info prep_tx_info; int error; lhw = vap->iv_ic->ic_softc; hw = LHW_TO_HW(lhw); lvif = VAP_TO_LVIF(vap); vif = LVIF_TO_VIF(lvif); IEEE80211_UNLOCK(vap->iv_ic); wiphy_lock(hw->wiphy); LKPI_80211_LVIF_LOCK(lvif); /* XXX-BZ KASSERT later? */ if (!lvif->lvif_bss_synched || lvif->lvif_bss == NULL) { #ifdef LINUXKPI_DEBUG_80211 ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p " "lvif_bss->ni %p synched %d\n", __func__, __LINE__, lvif, vap, vap->iv_bss, lvif->lvif_bss, (lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL, lvif->lvif_bss_synched); #endif LKPI_80211_LVIF_UNLOCK(lvif); error = ENOTRECOVERABLE; goto out; } lsta = lvif->lvif_bss; LKPI_80211_LVIF_UNLOCK(lvif); KASSERT(lsta != NULL, ("%s: lsta %p! lvif %p vap %p\n", __func__, lsta, lvif, vap)); IMPROVE("event callback?"); /* End mgd_complete_tx. */ if (lsta->in_mgd) { memset(&prep_tx_info, 0, sizeof(prep_tx_info)); if (vap->iv_state == IEEE80211_S_AUTH) prep_tx_info.subtype = IEEE80211_STYPE_AUTH; else prep_tx_info.subtype = IEEE80211_STYPE_ASSOC_REQ; prep_tx_info.link_id = 0; lkpi_80211_mo_mgd_complete_tx(hw, vif, &prep_tx_info); lsta->in_mgd = false; } /* Now start auth/assoc. */ /* Start mgd_prepare_tx. */ if (!lsta->in_mgd) { memset(&prep_tx_info, 0, sizeof(prep_tx_info)); if (nstate == IEEE80211_S_AUTH) prep_tx_info.subtype = IEEE80211_STYPE_AUTH; else prep_tx_info.subtype = IEEE80211_STYPE_ASSOC_REQ; prep_tx_info.link_id = 0; lkpi_80211_mo_mgd_prepare_tx(hw, vif, &prep_tx_info); lsta->in_mgd = true; } error = 0; out: wiphy_unlock(hw->wiphy); IEEE80211_LOCK(vap->iv_ic); return (error); } static int lkpi_sta_assoc_to_scan(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) { int error; error = lkpi_sta_assoc_to_auth(vap, nstate, arg); if (error != 0 && error != EALREADY) return (error); error = lkpi_sta_auth_to_scan(vap, nstate, arg); return (error); } static int lkpi_sta_assoc_to_init(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) { int error; error = lkpi_sta_assoc_to_scan(vap, nstate, arg); if (error != 0 && error != EALREADY) return (error); error = lkpi_sta_scan_to_init(vap, nstate, arg); /* do_nada */ return (error); } static int lkpi_sta_run_to_init(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) { int error; error = lkpi_sta_run_to_assoc(vap, nstate, arg); if (error != 0 && error != EALREADY) return (error); error = lkpi_sta_assoc_to_init(vap, nstate, arg); return (error); } static int lkpi_sta_run_to_scan(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) { int error; error = lkpi_sta_run_to_assoc(vap, nstate, arg); if (error != 0 && error != EALREADY) return (error); error = lkpi_sta_assoc_to_scan(vap, nstate, arg); return (error); } static int lkpi_sta_run_to_auth(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) { int error; error = lkpi_sta_run_to_assoc(vap, nstate, arg); if (error != 0 && error != EALREADY) return (error); error = lkpi_sta_assoc_to_auth(vap, nstate, arg); return (error); } /* -------------------------------------------------------------------------- */ /* * The matches the documented state changes in net80211::sta_newstate(). * XXX (1) without CSA and SLEEP yet, * XXX (2) not all unhandled cases * there are "invalid" (so there is a room for failure here). */ struct fsm_state { /* INIT, SCAN, AUTH, ASSOC, CAC, RUN, CSA, SLEEP */ enum ieee80211_state ostate; enum ieee80211_state nstate; int (*handler)(struct ieee80211vap *, enum ieee80211_state, int); } sta_state_fsm[] = { { IEEE80211_S_INIT, IEEE80211_S_INIT, lkpi_sta_state_do_nada }, { IEEE80211_S_SCAN, IEEE80211_S_INIT, lkpi_sta_state_do_nada }, /* DOWN4 scan_to_init */ { IEEE80211_S_AUTH, IEEE80211_S_INIT, lkpi_sta_auth_to_init }, /* not explicitly in sta_newstate() */ { IEEE80211_S_ASSOC, IEEE80211_S_INIT, lkpi_sta_assoc_to_init }, /* Send DEAUTH. */ { IEEE80211_S_RUN, IEEE80211_S_INIT, lkpi_sta_run_to_init }, /* Send DISASSOC. */ { IEEE80211_S_INIT, IEEE80211_S_SCAN, lkpi_sta_init_to_scan }, /* UP1 */ { IEEE80211_S_SCAN, IEEE80211_S_SCAN, lkpi_sta_state_do_nada }, { IEEE80211_S_AUTH, IEEE80211_S_SCAN, lkpi_sta_auth_to_scan }, /* DOWN3 */ { IEEE80211_S_ASSOC, IEEE80211_S_SCAN, lkpi_sta_assoc_to_scan }, { IEEE80211_S_RUN, IEEE80211_S_SCAN, lkpi_sta_run_to_scan }, /* Beacon miss. */ { IEEE80211_S_INIT, IEEE80211_S_AUTH, lkpi_sta_scan_to_auth }, /* Send AUTH. */ { IEEE80211_S_SCAN, IEEE80211_S_AUTH, lkpi_sta_scan_to_auth }, /* UP2 Send AUTH. */ { IEEE80211_S_AUTH, IEEE80211_S_AUTH, lkpi_sta_a_to_a }, /* Send ?AUTH. */ { IEEE80211_S_ASSOC, IEEE80211_S_AUTH, lkpi_sta_assoc_to_auth }, /* DOWN2 Send ?AUTH. */ { IEEE80211_S_RUN, IEEE80211_S_AUTH, lkpi_sta_run_to_auth }, /* Send ?AUTH. */ { IEEE80211_S_AUTH, IEEE80211_S_ASSOC, lkpi_sta_auth_to_assoc }, /* UP3.1 Send ASSOCREQ. */ { IEEE80211_S_ASSOC, IEEE80211_S_ASSOC, lkpi_sta_a_to_a }, /* Send ASSOCREQ. */ { IEEE80211_S_RUN, IEEE80211_S_ASSOC, lkpi_sta_run_to_assoc }, /* DOWN1 Send ASSOCREQ/REASSOCREQ. */ { IEEE80211_S_AUTH, IEEE80211_S_RUN, lkpi_sta_auth_to_run }, /* UP3.2 */ { IEEE80211_S_ASSOC, IEEE80211_S_RUN, lkpi_sta_assoc_to_run }, /* UP4 */ { IEEE80211_S_RUN, IEEE80211_S_RUN, lkpi_sta_state_do_nada }, /* Dummy at the end without handler. */ { IEEE80211_S_INIT, IEEE80211_S_INIT, NULL }, }; static int lkpi_iv_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) { struct ieee80211com *ic; struct lkpi_hw *lhw; struct lkpi_vif *lvif; struct ieee80211_vif *vif; struct fsm_state *s; enum ieee80211_state ostate; int error; ic = vap->iv_ic; IEEE80211_LOCK_ASSERT(ic); ostate = vap->iv_state; #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE) ic_printf(vap->iv_ic, "%s:%d: vap %p nstate %#x arg %#x\n", __func__, __LINE__, vap, nstate, arg); #endif if (vap->iv_opmode == IEEE80211_M_STA) { lhw = ic->ic_softc; lvif = VAP_TO_LVIF(vap); vif = LVIF_TO_VIF(lvif); /* No need to replicate this in most state handlers. */ if (nstate > IEEE80211_S_SCAN) lkpi_stop_hw_scan(lhw, vif); s = sta_state_fsm; } else { ic_printf(vap->iv_ic, "%s: only station mode currently supported: " "vap %p iv_opmode %d\n", __func__, vap, vap->iv_opmode); return (ENOSYS); } error = 0; for (; s->handler != NULL; s++) { if (ostate == s->ostate && nstate == s->nstate) { #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE) ic_printf(vap->iv_ic, "%s: new state %d (%s) ->" " %d (%s): arg %d.\n", __func__, ostate, ieee80211_state_name[ostate], nstate, ieee80211_state_name[nstate], arg); #endif error = s->handler(vap, nstate, arg); break; } } IEEE80211_LOCK_ASSERT(vap->iv_ic); if (s->handler == NULL) { IMPROVE("turn this into a KASSERT\n"); ic_printf(vap->iv_ic, "%s: unsupported state transition " "%d (%s) -> %d (%s)\n", __func__, ostate, ieee80211_state_name[ostate], nstate, ieee80211_state_name[nstate]); return (ENOSYS); } if (error == EALREADY) { #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE) ic_printf(vap->iv_ic, "%s: state transition %d (%s) -> " "%d (%s): iv_newstate already handled: %d.\n", __func__, ostate, ieee80211_state_name[ostate], nstate, ieee80211_state_name[nstate], error); #endif return (0); } if (error != 0) { ic_printf(vap->iv_ic, "%s: error %d during state transition " "%d (%s) -> %d (%s)\n", __func__, error, ostate, ieee80211_state_name[ostate], nstate, ieee80211_state_name[nstate]); return (error); } #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE) ic_printf(vap->iv_ic, "%s:%d: vap %p nstate %#x arg %#x " "calling net80211 parent\n", __func__, __LINE__, vap, nstate, arg); #endif return (lvif->iv_newstate(vap, nstate, arg)); } /* -------------------------------------------------------------------------- */ /* * We overload (*iv_update_bss) as otherwise we have cases in, e.g., * net80211::ieee80211_sta_join1() where vap->iv_bss gets replaced by a * new node without us knowing and thus our ni/lsta are out of sync. */ static struct ieee80211_node * lkpi_iv_update_bss(struct ieee80211vap *vap, struct ieee80211_node *ni) { struct lkpi_vif *lvif; struct ieee80211_node *rni; IEEE80211_LOCK_ASSERT(vap->iv_ic); lvif = VAP_TO_LVIF(vap); LKPI_80211_LVIF_LOCK(lvif); lvif->lvif_bss_synched = false; LKPI_80211_LVIF_UNLOCK(lvif); rni = lvif->iv_update_bss(vap, ni); return (rni); } #ifdef LKPI_80211_WME static int lkpi_wme_update(struct lkpi_hw *lhw, struct ieee80211vap *vap, bool planned) { struct ieee80211com *ic; struct ieee80211_hw *hw; struct lkpi_vif *lvif; struct ieee80211_vif *vif; struct chanAccParams chp; struct wmeParams wmeparr[WME_NUM_AC]; struct ieee80211_tx_queue_params txqp; enum ieee80211_bss_changed bss_changed; int error; uint16_t ac; hw = LHW_TO_HW(lhw); lockdep_assert_wiphy(hw->wiphy); IMPROVE(); KASSERT(WME_NUM_AC == IEEE80211_NUM_ACS, ("%s: WME_NUM_AC %d != " "IEEE80211_NUM_ACS %d\n", __func__, WME_NUM_AC, IEEE80211_NUM_ACS)); if (vap == NULL) return (0); if ((vap->iv_flags & IEEE80211_F_WME) == 0) return (0); if (lhw->ops->conf_tx == NULL) return (0); if (!planned && (vap->iv_state != IEEE80211_S_RUN)) { lhw->update_wme = true; return (0); } lhw->update_wme = false; ic = lhw->ic; ieee80211_wme_ic_getparams(ic, &chp); IEEE80211_LOCK(ic); for (ac = 0; ac < WME_NUM_AC; ac++) wmeparr[ac] = chp.cap_wmeParams[ac]; IEEE80211_UNLOCK(ic); lvif = VAP_TO_LVIF(vap); vif = LVIF_TO_VIF(lvif); /* Configure tx queues (conf_tx) & send BSS_CHANGED_QOS. */ for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { struct wmeParams *wmep; wmep = &wmeparr[ac]; bzero(&txqp, sizeof(txqp)); txqp.cw_min = wmep->wmep_logcwmin; txqp.cw_max = wmep->wmep_logcwmax; txqp.txop = wmep->wmep_txopLimit; txqp.aifs = wmep->wmep_aifsn; error = lkpi_80211_mo_conf_tx(hw, vif, /* link_id */0, ac, &txqp); if (error != 0) ic_printf(ic, "%s: conf_tx ac %u failed %d\n", __func__, ac, error); } bss_changed = BSS_CHANGED_QOS; if (!planned) lkpi_bss_info_change(hw, vif, bss_changed); return (bss_changed); } #endif static int lkpi_ic_wme_update(struct ieee80211com *ic) { #ifdef LKPI_80211_WME struct ieee80211vap *vap; struct lkpi_hw *lhw; struct ieee80211_hw *hw; IMPROVE("Use the per-VAP callback in net80211."); vap = TAILQ_FIRST(&ic->ic_vaps); if (vap == NULL) return (0); lhw = ic->ic_softc; hw = LHW_TO_HW(lhw); wiphy_lock(hw->wiphy); lkpi_wme_update(lhw, vap, false); wiphy_unlock(hw->wiphy); #endif return (0); /* unused */ } static void lkpi_iv_sta_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, int subtype, const struct ieee80211_rx_stats *rxs, int rssi, int nf) { struct lkpi_hw *lhw; struct ieee80211_hw *hw; struct lkpi_vif *lvif; struct ieee80211_vif *vif; enum ieee80211_bss_changed bss_changed; lvif = VAP_TO_LVIF(ni->ni_vap); vif = LVIF_TO_VIF(lvif); lvif->iv_recv_mgmt(ni, m0, subtype, rxs, rssi, nf); switch (subtype) { case IEEE80211_FC0_SUBTYPE_PROBE_RESP: break; case IEEE80211_FC0_SUBTYPE_BEACON: /* * Only count beacons when assoc. SCAN has its own logging. * This is for connection/beacon loss/session protection almost * over debugging when trying to get into a stable RUN state. */ if (vif->cfg.assoc) lvif->beacons++; break; default: return; } lhw = ni->ni_ic->ic_softc; hw = LHW_TO_HW(lhw); /* * If this direct call to mo_bss_info_changed will not work due to * locking, see if queue_work() is fast enough. */ bss_changed = lkpi_update_dtim_tsf(vif, ni, ni->ni_vap, __func__, __LINE__); lkpi_bss_info_change(hw, vif, bss_changed); } /* * Change link-layer address on the vif (if the vap is not started/"UP"). * This can happen if a user changes 'ether' using ifconfig. * The code is based on net80211/ieee80211_freebsd.c::wlan_iflladdr() but * we do use a per-[l]vif event handler to be sure we exist as we * cannot assume that from every vap derives a vif and we have a hard * time checking based on net80211 information. * Should this ever become a real problem we could add a callback function * to wlan_iflladdr() to be set optionally but that would be for a * single-consumer (or needs a list) -- was just too complicated for an * otherwise perfect mechanism FreeBSD already provides. */ static void lkpi_vif_iflladdr(void *arg, struct ifnet *ifp) { struct epoch_tracker et; struct ieee80211_vif *vif; NET_EPOCH_ENTER(et); /* NB: identify vap's by if_transmit; left as an extra check. */ if (if_gettransmitfn(ifp) != ieee80211_vap_transmit || (if_getflags(ifp) & IFF_UP) != 0) { NET_EPOCH_EXIT(et); return; } vif = arg; IEEE80211_ADDR_COPY(vif->bss_conf.addr, if_getlladdr(ifp)); NET_EPOCH_EXIT(et); } static struct ieee80211vap * lkpi_ic_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, enum ieee80211_opmode opmode, int flags, const uint8_t bssid[IEEE80211_ADDR_LEN], const uint8_t mac[IEEE80211_ADDR_LEN]) { struct lkpi_hw *lhw; struct ieee80211_hw *hw; struct lkpi_vif *lvif; struct ieee80211vap *vap; struct ieee80211_vif *vif; struct ieee80211_tx_queue_params txqp; enum ieee80211_bss_changed bss_changed; struct sysctl_oid *node; size_t len; int error, i; uint16_t ac; if (!TAILQ_EMPTY(&ic->ic_vaps)) /* 1 so far. Add once this works. */ return (NULL); lhw = ic->ic_softc; hw = LHW_TO_HW(lhw); len = sizeof(*lvif); len += hw->vif_data_size; /* vif->drv_priv */ lvif = malloc(len, M_80211_VAP, M_WAITOK | M_ZERO); mtx_init(&lvif->mtx, "lvif", NULL, MTX_DEF); TASK_INIT(&lvif->sw_scan_task, 0, lkpi_sw_scan_task, lvif); INIT_LIST_HEAD(&lvif->lsta_list); lvif->lvif_bss = NULL; refcount_init(&lvif->nt_unlocked, 0); lvif->lvif_bss_synched = false; vap = LVIF_TO_VAP(lvif); vif = LVIF_TO_VIF(lvif); memcpy(vif->addr, mac, IEEE80211_ADDR_LEN); vif->p2p = false; vif->probe_req_reg = false; vif->type = lkpi_opmode_to_vif_type(opmode); lvif->wdev.iftype = vif->type; /* Need to fill in other fields as well. */ IMPROVE(); /* Create a chanctx to be used later. */ IMPROVE("lkpi_alloc_lchanctx reserved as many as can be"); (void) lkpi_find_lchanctx_reserved(hw, lvif); /* XXX-BZ hardcoded for now! */ #if 1 RCU_INIT_POINTER(vif->bss_conf.chanctx_conf, NULL); vif->bss_conf.vif = vif; /* vap->iv_myaddr is not set until net80211::vap_setup or vap_attach. */ IEEE80211_ADDR_COPY(vif->bss_conf.addr, mac); lvif->lvif_ifllevent = EVENTHANDLER_REGISTER(iflladdr_event, lkpi_vif_iflladdr, vif, EVENTHANDLER_PRI_ANY); vif->bss_conf.link_id = 0; /* Non-MLO operation. */ vif->bss_conf.chanreq.oper.chan = lhw->dflt_chandef.chan; vif->bss_conf.chanreq.oper.width = NL80211_CHAN_WIDTH_20_NOHT; vif->bss_conf.use_short_preamble = false; /* vap->iv_flags IEEE80211_F_SHPREAMBLE */ vif->bss_conf.use_short_slot = false; /* vap->iv_flags IEEE80211_F_SHSLOT */ vif->bss_conf.qos = false; vif->bss_conf.use_cts_prot = false; /* vap->iv_protmode */ vif->bss_conf.ht_operation_mode = IEEE80211_HT_OP_MODE_PROTECTION_NONE; IEEE80211_ADDR_COPY(vif->cfg.ap_addr, ieee80211broadcastaddr); vif->cfg.aid = 0; vif->cfg.assoc = false; vif->cfg.idle = true; vif->cfg.ps = false; IMPROVE("Check other fields and then figure out whats is left elsewhere of them"); /* * We need to initialize it to something as the bss_info_changed call * will try to copy from it in iwlwifi and NULL is a panic. * We will set the proper one in scan_to_auth() before being assoc. */ vif->bss_conf.bssid = ieee80211broadcastaddr; #endif #if 0 vif->bss_conf.dtim_period = 0; /* IEEE80211_DTIM_DEFAULT ; must stay 0. */ IEEE80211_ADDR_COPY(vif->bss_conf.bssid, bssid); vif->bss_conf.beacon_int = ic->ic_bintval; /* iwlwifi bug. */ if (vif->bss_conf.beacon_int < 16) vif->bss_conf.beacon_int = 16; #endif /* Link Config */ vif->link_conf[0] = &vif->bss_conf; for (i = 0; i < nitems(vif->link_conf); i++) { IMPROVE("more than 1 link one day"); } /* Setup queue defaults; driver may override in (*add_interface). */ for (i = 0; i < IEEE80211_NUM_ACS; i++) { if (ieee80211_hw_check(hw, QUEUE_CONTROL)) vif->hw_queue[i] = IEEE80211_INVAL_HW_QUEUE; else if (hw->queues >= IEEE80211_NUM_ACS) vif->hw_queue[i] = i; else vif->hw_queue[i] = 0; /* Initialize the queue to running. Stopped? */ lvif->hw_queue_stopped[i] = false; } vif->cab_queue = IEEE80211_INVAL_HW_QUEUE; IMPROVE(); wiphy_lock(hw->wiphy); error = lkpi_80211_mo_start(hw); if (error != 0) { wiphy_unlock(hw->wiphy); ic_printf(ic, "%s: failed to start hw: %d\n", __func__, error); mtx_destroy(&lvif->mtx); free(lvif, M_80211_VAP); return (NULL); } error = lkpi_80211_mo_add_interface(hw, vif); if (error != 0) { IMPROVE(); /* XXX-BZ mo_stop()? */ wiphy_unlock(hw->wiphy); ic_printf(ic, "%s: failed to add interface: %d\n", __func__, error); mtx_destroy(&lvif->mtx); free(lvif, M_80211_VAP); return (NULL); } wiphy_unlock(hw->wiphy); LKPI_80211_LHW_LVIF_LOCK(lhw); TAILQ_INSERT_TAIL(&lhw->lvif_head, lvif, lvif_entry); LKPI_80211_LHW_LVIF_UNLOCK(lhw); /* Set bss_info. */ bss_changed = 0; lkpi_bss_info_change(hw, vif, bss_changed); /* Configure tx queues (conf_tx), default WME & send BSS_CHANGED_QOS. */ IMPROVE("Hardcoded values; to fix see 802.11-2016, 9.4.2.29 EDCA Parameter Set element"); wiphy_lock(hw->wiphy); for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { bzero(&txqp, sizeof(txqp)); txqp.cw_min = 15; txqp.cw_max = 1023; txqp.txop = 0; txqp.aifs = 2; error = lkpi_80211_mo_conf_tx(hw, vif, /* link_id */0, ac, &txqp); if (error != 0) ic_printf(ic, "%s: conf_tx ac %u failed %d\n", __func__, ac, error); } wiphy_unlock(hw->wiphy); bss_changed = BSS_CHANGED_QOS; lkpi_bss_info_change(hw, vif, bss_changed); /* Force MC init. */ lkpi_update_mcast_filter(ic); ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid); /* Now we have a valid vap->iv_ifp. Any checksum offloading goes below. */ IMPROVE(); /* Override with LinuxKPI method so we can drive mac80211/cfg80211. */ lvif->iv_newstate = vap->iv_newstate; vap->iv_newstate = lkpi_iv_newstate; lvif->iv_update_bss = vap->iv_update_bss; vap->iv_update_bss = lkpi_iv_update_bss; lvif->iv_recv_mgmt = vap->iv_recv_mgmt; vap->iv_recv_mgmt = lkpi_iv_sta_recv_mgmt; #ifdef LKPI_80211_HW_CRYPTO /* Key management. */ if (lkpi_hwcrypto && lhw->ops->set_key != NULL) { vap->iv_key_set = lkpi_iv_key_set; vap->iv_key_delete = lkpi_iv_key_delete; vap->iv_key_update_begin = lkpi_iv_key_update_begin; vap->iv_key_update_end = lkpi_iv_key_update_end; } #endif #ifdef LKPI_80211_HT /* Stay with the iv_ampdu_rxmax,limit / iv_ampdu_density defaults until later. */ #endif ieee80211_ratectl_init(vap); /* Complete setup. */ ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status, mac); #ifdef LKPI_80211_HT /* * Modern chipset/fw/drv will do A-MPDU in drv/fw and fail * to do so if they cannot do the crypto too. */ if (!lkpi_hwcrypto && IEEE80211_CONF_AMPDU_OFFLOAD(ic)) vap->iv_flags_ht &= ~IEEE80211_FHT_AMPDU_RX; #endif if (hw->max_listen_interval == 0) hw->max_listen_interval = 7 * (ic->ic_lintval / ic->ic_bintval); hw->conf.listen_interval = hw->max_listen_interval; /* XXX-BZ do we need to be able to update these? */ hw->wiphy->frag_threshold = vap->iv_fragthreshold; lkpi_80211_mo_set_frag_threshold(hw, vap->iv_fragthreshold); hw->wiphy->rts_threshold = vap->iv_rtsthreshold; lkpi_80211_mo_set_rts_threshold(hw, vap->iv_rtsthreshold); /* any others? */ /* Add per-VIF/VAP sysctls. */ sysctl_ctx_init(&lvif->sysctl_ctx); node = SYSCTL_ADD_NODE(&lvif->sysctl_ctx, SYSCTL_CHILDREN(&sysctl___compat_linuxkpi_80211), OID_AUTO, if_name(vap->iv_ifp), CTLFLAG_RD | CTLFLAG_SKIP | CTLFLAG_MPSAFE, NULL, "VIF Information"); SYSCTL_ADD_PROC(&lvif->sysctl_ctx, SYSCTL_CHILDREN(node), OID_AUTO, "dump_stas", CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, lvif, 0, lkpi_80211_dump_stas, "A", "Dump sta statistics of this vif"); SYSCTL_ADD_PROC(&lvif->sysctl_ctx, SYSCTL_CHILDREN(node), OID_AUTO, "dump_stas_queues", CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE | CTLFLAG_SKIP, lvif, 0, lkpi_80211_dump_sta_queues, "A", "Dump queue statistics for any sta of this vif"); IMPROVE(); return (vap); } void linuxkpi_ieee80211_unregister_hw(struct ieee80211_hw *hw) { wiphy_unregister(hw->wiphy); linuxkpi_ieee80211_ifdetach(hw); IMPROVE(); } void linuxkpi_ieee80211_restart_hw(struct ieee80211_hw *hw) { TODO(); } static void lkpi_ic_vap_delete(struct ieee80211vap *vap) { struct ieee80211com *ic; struct lkpi_hw *lhw; struct ieee80211_hw *hw; struct lkpi_vif *lvif; struct ieee80211_vif *vif; lvif = VAP_TO_LVIF(vap); vif = LVIF_TO_VIF(lvif); ic = vap->iv_ic; lhw = ic->ic_softc; hw = LHW_TO_HW(lhw); EVENTHANDLER_DEREGISTER(iflladdr_event, lvif->lvif_ifllevent); /* Clear up per-VIF/VAP sysctls. */ sysctl_ctx_free(&lvif->sysctl_ctx); ieee80211_draintask(ic, &lvif->sw_scan_task); LKPI_80211_LHW_LVIF_LOCK(lhw); TAILQ_REMOVE(&lhw->lvif_head, lvif, lvif_entry); LKPI_80211_LHW_LVIF_UNLOCK(lhw); ieee80211_ratectl_deinit(vap); ieee80211_vap_detach(vap); IMPROVE("clear up other bits in this state"); lkpi_80211_mo_remove_interface(hw, vif); /* Single VAP, so we can do this here. */ lkpi_80211_mo_stop(hw, false); /* XXX SUSPEND */ mtx_destroy(&lvif->mtx); free(lvif, M_80211_VAP); } static void lkpi_ic_update_mcast(struct ieee80211com *ic) { struct ieee80211vap *vap; struct lkpi_hw *lhw; lhw = ic->ic_softc; LKPI_80211_LHW_MC_LOCK(lhw); /* Cleanup anything on the current list. */ lkpi_cleanup_mcast_list_locked(lhw); /* Build up the new list (or allmulti). */ if (ic->ic_allmulti == 0) { TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) if_foreach_llmaddr(vap->iv_ifp, lkpi_ic_update_mcast_copy, &lhw->mc_list); lhw->mc_all_multi = false; } else { lhw->mc_all_multi = true; } LKPI_80211_LHW_MC_UNLOCK(lhw); lkpi_update_mcast_filter(ic); TRACEOK(); } static void lkpi_ic_update_promisc(struct ieee80211com *ic) { UNIMPLEMENTED; } static void lkpi_ic_update_chw(struct ieee80211com *ic) { UNIMPLEMENTED; } /* Start / stop device. */ static void lkpi_ic_parent(struct ieee80211com *ic) { struct lkpi_hw *lhw; struct ieee80211_hw *hw; #ifdef HW_START_STOP int error; #endif bool start_all; IMPROVE(); lhw = ic->ic_softc; hw = LHW_TO_HW(lhw); start_all = false; /* IEEE80211_UNLOCK(ic); */ wiphy_lock(hw->wiphy); if (ic->ic_nrunning > 0) { #ifdef HW_START_STOP error = lkpi_80211_mo_start(hw); if (error == 0) #endif start_all = true; } else { #ifdef HW_START_STOP lkpi_80211_mo_stop(hw, false); /* XXX SUSPEND */ #endif } wiphy_unlock(hw->wiphy); /* IEEE80211_LOCK(ic); */ if (start_all) ieee80211_start_all(ic); } bool linuxkpi_ieee80211_is_ie_id_in_ie_buf(const u8 ie, const u8 *ie_ids, size_t ie_ids_len) { int i; for (i = 0; i < ie_ids_len; i++) { if (ie == *ie_ids) return (true); } return (false); } /* Return true if skipped; false if error. */ bool linuxkpi_ieee80211_ie_advance(size_t *xp, const u8 *ies, size_t ies_len) { size_t x; uint8_t l; x = *xp; KASSERT(x < ies_len, ("%s: x %zu ies_len %zu ies %p\n", __func__, x, ies_len, ies)); l = ies[x + 1]; x += 2 + l; if (x > ies_len) return (false); *xp = x; return (true); } static uint8_t * lkpi_scan_ies_add(uint8_t *p, struct ieee80211_scan_ies *scan_ies, uint32_t band_mask, struct ieee80211vap *vap, struct ieee80211_hw *hw) { struct ieee80211_supported_band *supband; struct linuxkpi_ieee80211_channel *channels; struct ieee80211com *ic; const struct ieee80211_channel *chan; const struct ieee80211_rateset *rs; uint8_t *pb; int band, i; ic = vap->iv_ic; for (band = 0; band < NUM_NL80211_BANDS; band++) { if ((band_mask & (1 << band)) == 0) continue; supband = hw->wiphy->bands[band]; /* * This should not happen; * band_mask is a bitmask of valid bands to scan on. */ if (supband == NULL || supband->n_channels == 0) continue; /* Find a first channel to get the mode and rates from. */ channels = supband->channels; chan = NULL; for (i = 0; i < supband->n_channels; i++) { uint32_t flags; if (channels[i].flags & IEEE80211_CHAN_DISABLED) continue; flags = 0; switch (band) { case NL80211_BAND_2GHZ: flags |= IEEE80211_CHAN_G; break; case NL80211_BAND_5GHZ: flags |= IEEE80211_CHAN_A; break; default: panic("%s:%d: unupported band %d\n", __func__, __LINE__, band); } chan = ieee80211_find_channel(ic, channels[i].center_freq, flags); if (chan != NULL) break; } /* This really should not happen. */ if (chan == NULL) continue; pb = p; rs = ieee80211_get_suprates(ic, chan); /* calls chan2mode */ p = ieee80211_add_rates(p, rs); p = ieee80211_add_xrates(p, rs); #if defined(LKPI_80211_HT) if ((vap->iv_flags_ht & IEEE80211_FHT_HT) != 0) { struct ieee80211_channel *c; c = ieee80211_ht_adjust_channel(ic, ic->ic_curchan, vap->iv_flags_ht); p = ieee80211_add_htcap_ch(p, vap, c); } #endif #if defined(LKPI_80211_VHT) if (band == NL80211_BAND_5GHZ && (vap->iv_vht_flags & IEEE80211_FVHT_VHT) != 0) { struct ieee80211_channel *c; c = ieee80211_ht_adjust_channel(ic, ic->ic_curchan, vap->iv_flags_ht); c = ieee80211_vht_adjust_channel(ic, c, vap->iv_vht_flags); p = ieee80211_add_vhtcap_ch(p, vap, c); } #endif scan_ies->ies[band] = pb; scan_ies->len[band] = p - pb; } /* Add common_ies */ pb = p; if ((vap->iv_flags & IEEE80211_F_WPA1) != 0 && vap->iv_wpa_ie != NULL) { memcpy(p, vap->iv_wpa_ie, 2 + vap->iv_wpa_ie[1]); p += 2 + vap->iv_wpa_ie[1]; } if (vap->iv_appie_probereq != NULL) { memcpy(p, vap->iv_appie_probereq->ie_data, vap->iv_appie_probereq->ie_len); p += vap->iv_appie_probereq->ie_len; } scan_ies->common_ies = pb; scan_ies->common_ie_len = p - pb; return (p); } static void lkpi_enable_hw_scan(struct lkpi_hw *lhw) { if (lhw->ops->hw_scan) { /* * Advertise full-offload scanning. * * Not limiting to SINGLE_SCAN_ON_ALL_BANDS here as otherwise * we essentially disable hw_scan for all drivers not setting * the flag. */ lhw->ic->ic_flags_ext |= IEEE80211_FEXT_SCAN_OFFLOAD; lhw->scan_flags |= LKPI_LHW_SCAN_HW; } } #ifndef LKPI_80211_USE_SCANLIST static const uint32_t chan_pri[] = { 5180, 5500, 5745, 5260, 5580, 5660, 5825, 5220, 5300, 5540, 5620, 5700, 5785, 5865, 2437, 2412, 2422, 2462, 2472, 2432, 2452 }; static int lkpi_scan_chan_list_idx(const struct linuxkpi_ieee80211_channel *lc) { int i; for (i = 0; i < nitems(chan_pri); i++) { if (lc->center_freq == chan_pri[i]) return (i); } return (-1); } static int lkpi_scan_chan_list_comp(const struct linuxkpi_ieee80211_channel *lc1, const struct linuxkpi_ieee80211_channel *lc2) { int idx1, idx2; /* Find index in list. */ idx1 = lkpi_scan_chan_list_idx(lc1); idx2 = lkpi_scan_chan_list_idx(lc2); if (idx1 == -1 && idx2 != -1) return (1); if (idx1 != -1 && idx2 == -1) return (-1); /* Neither on the list, use center_freq. */ if (idx1 == -1 && idx2 == -1) return (lc1->center_freq - lc2->center_freq); /* Whichever is first in the list. */ return (idx1 - idx2); } static void lkpi_scan_chan_list_resort(struct linuxkpi_ieee80211_channel **cpp, size_t nchan) { struct linuxkpi_ieee80211_channel *lc, *nc; size_t i, j; int rc; for (i = (nchan - 1); i > 0; i--) { for (j = i; j > 0 ; j--) { lc = *(cpp + j); nc = *(cpp + j - 1); rc = lkpi_scan_chan_list_comp(lc, nc); if (rc < 0) { *(cpp + j) = nc; *(cpp + j - 1) = lc; } } } } static bool lkpi_scan_chan(struct linuxkpi_ieee80211_channel *c, struct ieee80211com *ic, bool log) { if ((c->flags & IEEE80211_CHAN_DISABLED) != 0) { if (log) TRACE_SCAN(ic, "Skipping disabled chan " "on band %s [%#x/%u/%#x]", lkpi_nl80211_band_name(c->band), c->hw_value, c->center_freq, c->flags); return (false); } if (isclr(ic->ic_chan_active, ieee80211_mhz2ieee(c->center_freq, lkpi_nl80211_band_to_net80211_band(c->band)))) { if (log) TRACE_SCAN(ic, "Skipping !active chan " "on band %s [%#x/%u/%#x]", lkpi_nl80211_band_name(c->band), c->hw_value, c->center_freq, c->flags); return (false); } return (true); } #endif static void lkpi_ic_scan_start(struct ieee80211com *ic) { struct lkpi_hw *lhw; struct ieee80211_hw *hw; struct lkpi_vif *lvif; struct ieee80211_vif *vif; struct ieee80211_scan_state *ss; struct ieee80211vap *vap; int error; bool is_hw_scan; lhw = ic->ic_softc; ss = ic->ic_scan; vap = ss->ss_vap; TRACE_SCAN(ic, "scan_flags %b", lhw->scan_flags, LKPI_LHW_SCAN_BITS); LKPI_80211_LHW_SCAN_LOCK(lhw); if ((lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) != 0) { /* A scan is still running. */ LKPI_80211_LHW_SCAN_UNLOCK(lhw); TRACE_SCAN(ic, "Trying to start new scan while still running; " "cancelling new net80211 scan; scan_flags %b", lhw->scan_flags, LKPI_LHW_SCAN_BITS); ieee80211_cancel_scan(vap); return; } is_hw_scan = (lhw->scan_flags & LKPI_LHW_SCAN_HW) != 0; LKPI_80211_LHW_SCAN_UNLOCK(lhw); #if 0 if (vap->iv_state != IEEE80211_S_SCAN) { TODO("We need to be able to scan if not in S_SCAN"); TRACE_SCAN(ic, "scan_flags %b iv_state %d", lhw->scan_flags, LKPI_LHW_SCAN_BITS, vap->iv_state); ieee80211_cancel_scan(vap); return; } #endif hw = LHW_TO_HW(lhw); if (!is_hw_scan) { /* If hw_scan is cleared clear FEXT_SCAN_OFFLOAD too. */ vap->iv_flags_ext &= ~IEEE80211_FEXT_SCAN_OFFLOAD; lvif = VAP_TO_LVIF(vap); vif = LVIF_TO_VIF(lvif); if (vap->iv_state == IEEE80211_S_SCAN) lkpi_hw_conf_idle(hw, false); LKPI_80211_LHW_SCAN_LOCK(lhw); lhw->scan_flags |= LKPI_LHW_SCAN_RUNNING; LKPI_80211_LHW_SCAN_UNLOCK(lhw); lkpi_update_mcast_filter(ic); TRACE_SCAN(vap->iv_ic, "Starting SW_SCAN: scan_flags %b", lhw->scan_flags, LKPI_LHW_SCAN_BITS); lkpi_80211_mo_sw_scan_start(hw, vif, vif->addr); /* net80211::scan_start() handled PS for us. */ IMPROVE(); /* XXX Also means it is too late to flush queues? * need to check iv_sta_ps or overload? */ /* XXX want to adjust ss end time/ maxdwell? */ } else { struct ieee80211_scan_request *hw_req; struct linuxkpi_ieee80211_channel *lc, **cpp; struct cfg80211_ssid *ssids; struct cfg80211_scan_6ghz_params *s6gp; size_t chan_len, nchan, ssids_len, s6ghzlen; int band, i, ssid_count, common_ie_len; #ifndef LKPI_80211_USE_SCANLIST int n; #endif uint32_t band_mask; uint8_t *ie, *ieend; bool running; ssid_count = min(ss->ss_nssid, hw->wiphy->max_scan_ssids); ssids_len = ssid_count * sizeof(*ssids); s6ghzlen = 0 * (sizeof(*s6gp)); /* XXX-BZ */ band_mask = 0; nchan = 0; if (ieee80211_hw_check(hw, SINGLE_SCAN_ON_ALL_BANDS)) { #ifdef LKPI_80211_USE_SCANLIST /* Avoid net80211 scan lists until it has proper scan offload support. */ for (i = ss->ss_next; i < ss->ss_last; i++) { nchan++; band = lkpi_net80211_chan_to_nl80211_band( ss->ss_chans[ss->ss_next + i]); band_mask |= (1 << band); } #else /* Instead we scan for all channels all the time. */ for (band = 0; band < NUM_NL80211_BANDS; band++) { switch (band) { case NL80211_BAND_2GHZ: case NL80211_BAND_5GHZ: break; default: continue; } if (hw->wiphy->bands[band] != NULL) { struct linuxkpi_ieee80211_channel *channels; int n; band_mask |= (1 << band); channels = hw->wiphy->bands[band]->channels; n = hw->wiphy->bands[band]->n_channels; for (i = 0; i < n; i++) { if (lkpi_scan_chan(&channels[i], ic, true)) nchan++; } } } #endif } else { IMPROVE("individual band scans not yet supported, only scanning first band"); /* In theory net80211 should drive this. */ /* Probably we need to add local logic for now; * need to deal with scan_complete * and cancel_scan and keep local state. * Also cut the nchan down above. */ /* XXX-BZ ath10k does not set this but still does it? &$%^ */ } chan_len = nchan * (sizeof(lc) + sizeof(*lc)); common_ie_len = 0; if ((vap->iv_flags & IEEE80211_F_WPA1) != 0 && vap->iv_wpa_ie != NULL) common_ie_len += vap->iv_wpa_ie[1]; if (vap->iv_appie_probereq != NULL) common_ie_len += vap->iv_appie_probereq->ie_len; /* We would love to check this at an earlier stage... */ if (common_ie_len > hw->wiphy->max_scan_ie_len) { ic_printf(ic, "WARNING: %s: common_ie_len %d > " "wiphy->max_scan_ie_len %d\n", __func__, common_ie_len, hw->wiphy->max_scan_ie_len); } hw_req = malloc(sizeof(*hw_req) + ssids_len + s6ghzlen + chan_len + lhw->supbands * lhw->scan_ie_len + common_ie_len, M_LKPI80211, M_WAITOK | M_ZERO); hw_req->req.flags = 0; /* XXX ??? */ /* hw_req->req.wdev */ hw_req->req.wiphy = hw->wiphy; hw_req->req.no_cck = false; /* XXX */ /* * In general setting duration[_mandatory] seems to pessimise * default scanning behaviour. We only use it for BGSCANnig * to keep the dwell times small. * Setting duration_mandatory makes this the maximum dwell * time (otherwise may be shorter). Duration is in TU. */ if ((ic->ic_flags_ext & IEEE80211_FEXT_BGSCAN) != 0) { unsigned long dwell; if ((ic->ic_caps & IEEE80211_C_BGSCAN) == 0 || (vap->iv_flags & IEEE80211_F_BGSCAN) == 0) ic_printf(ic, "BGSCAN despite off: %b, %b, %b\n", ic->ic_flags_ext, IEEE80211_FEXT_BITS, vap->iv_flags, IEEE80211_F_BITS, ic->ic_caps, IEEE80211_C_BITS); dwell = ss->ss_mindwell; if (dwell == 0) dwell = msecs_to_ticks(20); hw_req->req.duration_mandatory = true; hw_req->req.duration = TICKS_2_USEC(dwell) / 1024; } #ifdef __notyet__ hw_req->req.flags |= NL80211_SCAN_FLAG_RANDOM_ADDR; memcpy(hw_req->req.mac_addr, xxx, IEEE80211_ADDR_LEN); memset(hw_req->req.mac_addr_mask, 0xxx, IEEE80211_ADDR_LEN); #endif eth_broadcast_addr(hw_req->req.bssid); hw_req->req.n_channels = nchan; cpp = (struct linuxkpi_ieee80211_channel **)(hw_req + 1); lc = (struct linuxkpi_ieee80211_channel *)(cpp + nchan); #ifdef LKPI_80211_USE_SCANLIST for (i = 0; i < nchan; i++) { *(cpp + i) = (struct linuxkpi_ieee80211_channel *)(lc + i); } /* Avoid net80211 scan lists until it has proper scan offload support. */ for (i = 0; i < nchan; i++) { struct ieee80211_channel *c; c = ss->ss_chans[ss->ss_next + i]; lc->center_freq = c->ic_freq; /* XXX */ /* lc->flags */ lc->band = lkpi_net80211_chan_to_nl80211_band(c); lc->max_power = c->ic_maxpower; /* lc-> ... */ lc++; } #else /* Add bands in reverse order for scanning. */ n = 0; for (band = NUM_NL80211_BANDS - 1; band >= 0; band--) { struct ieee80211_supported_band *supband; struct linuxkpi_ieee80211_channel *channels; /* Band disabled for scanning? */ if ((band_mask & (1 << band)) == 0) continue; /* Nothing to scan in band? */ supband = hw->wiphy->bands[band]; if (supband == NULL || supband->n_channels == 0) continue; channels = supband->channels; for (i = 0; i < supband->n_channels; i++) { if (lkpi_scan_chan(&channels[i], ic, false)) *(cpp + n++) = &channels[i]; } } if (lkpi_order_scanlist) lkpi_scan_chan_list_resort(cpp, nchan); if ((linuxkpi_debug_80211 & D80211_SCAN) != 0) { printf("%s:%d: %s SCAN Channel List (nchan=%zu): ", __func__, __LINE__, ic->ic_name, nchan); for (i = 0; i < nchan; i++) { struct linuxkpi_ieee80211_channel *xc; xc = *(cpp + i); printf(" %d(%d)", ieee80211_mhz2ieee(xc->center_freq, lkpi_nl80211_band_to_net80211_band( xc->band)), xc->center_freq); } printf("\n"); } #endif hw_req->req.n_ssids = ssid_count; if (hw_req->req.n_ssids > 0) { ssids = (struct cfg80211_ssid *)lc; hw_req->req.ssids = ssids; for (i = 0; i < ssid_count; i++) { ssids->ssid_len = ss->ss_ssid[i].len; memcpy(ssids->ssid, ss->ss_ssid[i].ssid, ss->ss_ssid[i].len); ssids++; } s6gp = (struct cfg80211_scan_6ghz_params *)ssids; } else { s6gp = (struct cfg80211_scan_6ghz_params *)lc; } /* 6GHz one day. */ hw_req->req.n_6ghz_params = 0; hw_req->req.scan_6ghz_params = NULL; hw_req->req.scan_6ghz = false; /* Weird boolean; not what you think. */ /* s6gp->... */ ie = ieend = (uint8_t *)s6gp; /* Copy per-band IEs, copy common IEs */ ieend = lkpi_scan_ies_add(ie, &hw_req->ies, band_mask, vap, hw); hw_req->req.ie = ie; hw_req->req.ie_len = ieend - ie; hw_req->req.scan_start = jiffies; lvif = VAP_TO_LVIF(vap); vif = LVIF_TO_VIF(lvif); LKPI_80211_LHW_SCAN_LOCK(lhw); /* Re-check under lock. */ running = (lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) != 0; if (!running) { KASSERT(lhw->hw_req == NULL, ("%s: ic %p lhw %p hw_req %p " "!= NULL\n", __func__, ic, lhw, lhw->hw_req)); lhw->scan_flags |= LKPI_LHW_SCAN_RUNNING; lhw->hw_req = hw_req; } LKPI_80211_LHW_SCAN_UNLOCK(lhw); if (running) { free(hw_req, M_LKPI80211); TRACE_SCAN(ic, "Trying to start new scan while still " "running (2); cancelling new net80211 scan; " "scan_flags %b", lhw->scan_flags, LKPI_LHW_SCAN_BITS); ieee80211_cancel_scan(vap); return; } lkpi_update_mcast_filter(ic); TRACE_SCAN(ic, "Starting HW_SCAN: scan_flags %b, " "ie_len %d, n_ssids %d, n_chan %d, common_ie_len %d [%d, %d]", lhw->scan_flags, LKPI_LHW_SCAN_BITS, hw_req->req.ie_len, hw_req->req.n_ssids, hw_req->req.n_channels, hw_req->ies.common_ie_len, hw_req->ies.len[NL80211_BAND_2GHZ], hw_req->ies.len[NL80211_BAND_5GHZ]); error = lkpi_80211_mo_hw_scan(hw, vif, hw_req); if (error != 0) { bool scan_done; int e; TRACE_SCAN(ic, "hw_scan failed; scan_flags %b, error %d", lhw->scan_flags, LKPI_LHW_SCAN_BITS, error); ieee80211_cancel_scan(vap); /* * ieee80211_scan_completed must be called in either * case of error or none. So let the free happen there * and only there. * That would be fine in theory but in practice drivers * behave differently: * ath10k does not return hw_scan until after scan_complete * and can then still return an error. * rtw88 can return 1 or -EBUSY without scan_complete * iwlwifi can return various errors before scan starts * ... * So we cannot rely on that behaviour and have to check * and balance between both code paths. */ e = 0; scan_done = true; LKPI_80211_LHW_SCAN_LOCK(lhw); if ((lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) != 0) { free(lhw->hw_req, M_LKPI80211); lhw->hw_req = NULL; /* * The ieee80211_cancel_scan() above runs in a * taskq and it may take ages for the previous * scan to clear; starting a new one right away * we run into the problem that the old one is * still active. */ e = msleep(lhw, &lhw->scan_mtx, 0, "lhwscanstop", hz); scan_done = (lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) != 0; /* * Now we can clear running if no one else did. */ lhw->scan_flags &= ~LKPI_LHW_SCAN_RUNNING; } LKPI_80211_LHW_SCAN_UNLOCK(lhw); lkpi_update_mcast_filter(ic); if (!scan_done) { ic_printf(ic, "ERROR: %s: timeout/error to wait " "for ieee80211_cancel_scan: %d\n", __func__, e); return; } /* * XXX-SIGH magic number. * rtw88 has a magic "return 1" if offloading scan is * not possible. Fall back to sw scan in that case. */ if (error == 1) { /* * We need to put this into some defered context * the net80211 scan may not be done yet * (ic_flags & IEEE80211_F_SCAN) and we cannot * wait here; if we do scan_curchan_task always * runs after our timeout to finalize the scan. */ ieee80211_runtask(ic, &lvif->sw_scan_task); return; } ic_printf(ic, "ERROR: %s: hw_scan returned %d\n", __func__, error); } } } static void lkpi_sw_scan_task(void *arg, int pending __unused) { struct lkpi_hw *lhw; struct lkpi_vif *lvif; struct ieee80211vap *vap; struct ieee80211_scan_state *ss; lvif = arg; vap = LVIF_TO_VAP(lvif); lhw = vap->iv_ic->ic_softc; ss = vap->iv_ic->ic_scan; LKPI_80211_LHW_SCAN_LOCK(lhw); /* * We will re-enable this at scan_end calling lkpi_enable_hw_scan(). * IEEE80211_FEXT_SCAN_OFFLOAD will be cleared by lkpi_ic_scan_start. */ lhw->scan_flags &= ~LKPI_LHW_SCAN_HW; LKPI_80211_LHW_SCAN_UNLOCK(lhw); TRACE_SCAN(vap->iv_ic, "Triggering SW_SCAN: pending %d, scan_flags %b", pending, lhw->scan_flags, LKPI_LHW_SCAN_BITS); /* * This will call ic_scan_start() and we will get into the right path * unless other scans started in between. */ ieee80211_start_scan(vap, IEEE80211_SCAN_ONCE, msecs_to_ticks(10000), /* 10000 ms (=~ 50 chan * 200 ms) */ ss->ss_mindwell ? ss->ss_mindwell : msecs_to_ticks(20), ss->ss_maxdwell ? ss->ss_maxdwell : msecs_to_ticks(200), vap->iv_des_nssid, vap->iv_des_ssid); } static void lkpi_ic_scan_end(struct ieee80211com *ic) { struct lkpi_hw *lhw; bool is_hw_scan; lhw = ic->ic_softc; TRACE_SCAN(ic, "scan_flags %b", lhw->scan_flags, LKPI_LHW_SCAN_BITS); LKPI_80211_LHW_SCAN_LOCK(lhw); if ((lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) == 0) { LKPI_80211_LHW_SCAN_UNLOCK(lhw); return; } is_hw_scan = (lhw->scan_flags & LKPI_LHW_SCAN_HW) != 0; LKPI_80211_LHW_SCAN_UNLOCK(lhw); if (!is_hw_scan) { struct ieee80211_scan_state *ss; struct ieee80211vap *vap; struct ieee80211_hw *hw; struct lkpi_vif *lvif; struct ieee80211_vif *vif; ss = ic->ic_scan; vap = ss->ss_vap; hw = LHW_TO_HW(lhw); lvif = VAP_TO_LVIF(vap); vif = LVIF_TO_VIF(lvif); lkpi_80211_mo_sw_scan_complete(hw, vif); /* Send PS to stop buffering if n80211 does not for us? */ if (vap->iv_state == IEEE80211_S_SCAN) lkpi_hw_conf_idle(hw, true); } /* * In case we disabled the hw_scan in lkpi_ic_scan_start() and * switched to swscan, re-enable hw_scan if available. */ lkpi_enable_hw_scan(lhw); /* Clear the scanning chandef. */ memset(&lhw->scan_chandef, 0, sizeof(lhw->scan_chandef)); LKPI_80211_LHW_SCAN_LOCK(lhw); wakeup(lhw); LKPI_80211_LHW_SCAN_UNLOCK(lhw); } static void lkpi_ic_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) { struct lkpi_hw *lhw; bool is_hw_scan; lhw = ss->ss_ic->ic_softc; TRACE_SCAN(ss->ss_ic, "scan_flags %b chan %d maxdwell %lu", lhw->scan_flags, LKPI_LHW_SCAN_BITS, ss->ss_ic->ic_curchan->ic_ieee, maxdwell); LKPI_80211_LHW_SCAN_LOCK(lhw); is_hw_scan = (lhw->scan_flags & LKPI_LHW_SCAN_HW) != 0; LKPI_80211_LHW_SCAN_UNLOCK(lhw); if (!is_hw_scan) lhw->ic_scan_curchan(ss, maxdwell); } static void lkpi_ic_scan_mindwell(struct ieee80211_scan_state *ss) { struct lkpi_hw *lhw; bool is_hw_scan; lhw = ss->ss_ic->ic_softc; TRACE_SCAN(ss->ss_ic, "scan_flags %b chan %d mindwell %lu", lhw->scan_flags, LKPI_LHW_SCAN_BITS, ss->ss_ic->ic_curchan->ic_ieee, ss->ss_mindwell); LKPI_80211_LHW_SCAN_LOCK(lhw); is_hw_scan = (lhw->scan_flags & LKPI_LHW_SCAN_HW) != 0; LKPI_80211_LHW_SCAN_UNLOCK(lhw); if (!is_hw_scan) lhw->ic_scan_mindwell(ss); } struct lkpi_ic_set_channel_iter_arg { struct linuxkpi_ieee80211_channel *chan; struct ieee80211_chanctx_conf *chanctx_conf; }; static void lkpi_ic_set_channel_chanctx_iterf(struct ieee80211_hw *hw, struct ieee80211_chanctx_conf *chanctx_conf, void *arg) { struct lkpi_ic_set_channel_iter_arg *chanctx_iter_arg; chanctx_iter_arg = arg; if (chanctx_iter_arg->chanctx_conf != NULL) return; if (chanctx_iter_arg->chan == chanctx_conf->def.chan) chanctx_iter_arg->chanctx_conf = chanctx_conf; } static void lkpi_ic_set_channel(struct ieee80211com *ic) { struct lkpi_hw *lhw; struct ieee80211_hw *hw; struct ieee80211_channel *c; struct linuxkpi_ieee80211_channel *chan; struct ieee80211_chanctx_conf *chanctx_conf; uint32_t changed; int error; bool hw_scan, scan_running; IEEE80211_UNLOCK_ASSERT(ic); lhw = ic->ic_softc; c = ic->ic_curchan; if (c == NULL || c == IEEE80211_CHAN_ANYC) { ic_printf(ic, "%s: Unset channel: c %p, ignoring update\n", __func__, c); return; } chan = lkpi_find_lkpi80211_chan(lhw, c); if (chan == NULL) { ic_printf(ic, "%s: No channel found for c %p(%d) chan %p\n", __func__, c, c->ic_ieee, chan); return; } /* * All net80211 callers call ieee80211_radiotap_chan_change(). * That means we have nothing to do ourselves. */ /* If we have a hw_scan running do not switch channels. */ LKPI_80211_LHW_SCAN_LOCK(lhw); scan_running = (lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) != 0; hw_scan = (lhw->scan_flags & LKPI_LHW_SCAN_HW) != 0; LKPI_80211_LHW_SCAN_UNLOCK(lhw); if (scan_running && hw_scan) { TRACE_SCAN(ic, "scan_flags %b chan %d nothing to do.", lhw->scan_flags, LKPI_LHW_SCAN_BITS, c->ic_ieee); /* Let us hope we set tx power levels elsewhere. */ return; } hw = LHW_TO_HW(lhw); wiphy_lock(hw->wiphy); if (scan_running) { struct ieee80211vap *vap; struct lkpi_vif *lvif; struct ieee80211_vif *vif; /* * For now and for scanning just pick the first VIF. * net80211 will need to grow DBDC/link_id support * for us to find the vif/chanctx otherwise. */ vap = TAILQ_FIRST(&ic->ic_vaps); lvif = VAP_TO_LVIF(vap); vif = LVIF_TO_VIF(lvif); /* We always set the chandef to no-HT for scanning. */ cfg80211_chandef_create(&lhw->scan_chandef, chan, NL80211_CHAN_NO_HT); #ifdef LINUXKPI_DEBUG_80211 if ((linuxkpi_debug_80211 & D80211_CHANDEF) != 0) ic_printf(ic, "%s:%d: initialized lhw->scan_chandef\n", __func__, __LINE__); #endif /* * This works for as long as we do not do BGSCANs; otherwise * it'll have to be offchan work. */ chanctx_conf = lkpi_get_chanctx_conf(hw, vif); changed = lkpi_init_chanctx_conf(hw, &lhw->scan_chandef, chanctx_conf); error = lkpi_set_chanctx_conf(hw, vif, chanctx_conf, changed, true); TRACE_SCAN(ic, "scan_flags %b chan %d ???, error %d", lhw->scan_flags, LKPI_LHW_SCAN_BITS, c->ic_ieee, error); IMPROVE("max power for scanning; TODO in lkpi_80211_update_chandef"); } else if (lhw->emulate_chanctx) { /* * We do not set the channel here for normal chanctx operation. * That's just a setup to fail. scan_to_auth will setup all the * other neccessary options for this to work. */ struct lkpi_ic_set_channel_iter_arg chanctx_iter_arg = { .chan = chan, .chanctx_conf = NULL, }; struct cfg80211_chan_def chandef; lkpi_init_chandef(ic, &chandef, chan, c, false); ieee80211_iter_chan_contexts_mtx(hw, lkpi_ic_set_channel_chanctx_iterf, &chanctx_iter_arg); if (chanctx_iter_arg.chanctx_conf == NULL) { /* No chanctx found for this channel. */ struct ieee80211vap *vap; struct lkpi_vif *lvif; struct ieee80211_vif *vif; /* * For now just pick the first VIF. * net80211 will need to grow DBDC/link_id support * for us to find the vif/chanctx otherwise. */ vap = TAILQ_FIRST(&ic->ic_vaps); lvif = VAP_TO_LVIF(vap); vif = LVIF_TO_VIF(lvif); #ifdef LINUXKPI_DEBUG_80211 if ((linuxkpi_debug_80211 & D80211_CHANDEF) != 0) ic_printf(ic, "%s:%d: using on stack chandef\n", __func__, __LINE__); #endif chanctx_conf = lkpi_get_chanctx_conf(hw, vif); changed = lkpi_init_chanctx_conf(hw, &chandef, chanctx_conf); IMPROVE("update HT, VHT, bw, ..."); error = lkpi_set_chanctx_conf(hw, vif, chanctx_conf, changed, true); } else { /* * We know we are on the same channel. * Do we really have to reset everything? */ IMPROVE("update HT, VHT, bw, ..."); #ifdef LINUXKPI_DEBUG_80211 if ((linuxkpi_debug_80211 & D80211_CHANDEF) != 0) ic_printf(ic, "%s:%d: using on stack chandef\n", __func__, __LINE__); #endif chanctx_conf = chanctx_iter_arg.chanctx_conf; changed = lkpi_init_chanctx_conf(hw, &chandef, chanctx_conf); lkpi_80211_mo_change_chanctx(hw, chanctx_conf, changed); } } /* Currently PS is hard coded off! Not sure it belongs here. */ IMPROVE("PS"); if (ieee80211_hw_check(hw, SUPPORTS_PS) && (hw->conf.flags & IEEE80211_CONF_PS) != 0) { hw->conf.flags &= ~IEEE80211_CONF_PS; error = lkpi_80211_mo_config(hw, IEEE80211_CONF_CHANGE_PS); if (error != 0 && error != EOPNOTSUPP) ic_printf(ic, "ERROR: %s: config %#0x returned " "%d\n", __func__, IEEE80211_CONF_CHANGE_PS, error); } wiphy_unlock(hw->wiphy); } static struct ieee80211_node * lkpi_ic_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN]) { struct ieee80211com *ic; struct lkpi_hw *lhw; struct ieee80211_node *ni; struct ieee80211_hw *hw; struct lkpi_sta *lsta; ic = vap->iv_ic; lhw = ic->ic_softc; /* We keep allocations de-coupled so we can deal with the two worlds. */ if (lhw->ic_node_alloc == NULL) return (NULL); ni = lhw->ic_node_alloc(vap, mac); if (ni == NULL) return (NULL); hw = LHW_TO_HW(lhw); lsta = lkpi_lsta_alloc(vap, mac, hw, ni); if (lsta == NULL) { if (lhw->ic_node_free != NULL) lhw->ic_node_free(ni); return (NULL); } return (ni); } static int lkpi_ic_node_init(struct ieee80211_node *ni) { struct ieee80211com *ic; struct lkpi_hw *lhw; int error; ic = ni->ni_ic; lhw = ic->ic_softc; if (lhw->ic_node_init != NULL) { error = lhw->ic_node_init(ni); if (error != 0) return (error); } /* XXX-BZ Sync other state over. */ IMPROVE(); return (0); } static void lkpi_ic_node_cleanup(struct ieee80211_node *ni) { struct ieee80211com *ic; struct lkpi_hw *lhw; ic = ni->ni_ic; lhw = ic->ic_softc; /* XXX-BZ remove from driver, ... */ IMPROVE(); if (lhw->ic_node_cleanup != NULL) lhw->ic_node_cleanup(ni); } static void lkpi_ic_node_free(struct ieee80211_node *ni) { struct ieee80211com *ic; struct lkpi_hw *lhw; struct lkpi_sta *lsta; ic = ni->ni_ic; lhw = ic->ic_softc; lsta = ni->ni_drv_data; /* KASSERT lsta is not NULL here. Print ni/ni__refcnt. */ /* * Pass in the original ni just in case of error we could check that * it is the same as lsta->ni. */ lkpi_lsta_free(lsta, ni); if (lhw->ic_node_free != NULL) lhw->ic_node_free(ni); } /* * lkpi_xmit() called from both the (*ic_raw_xmit) as well as the (*ic_transmit) * call path. * Unfortunately they have slightly different invariants. See * ieee80211_raw_output() and ieee80211_parent_xmitpkt(). * Both take care of the ni reference in case of error, and otherwise during * the callback after transmit. * The difference is that in case of error (*ic_raw_xmit) needs us to release * the mbuf, while (*ic_transmit) will free the mbuf itself. */ static int lkpi_xmit(struct ieee80211_node *ni, struct mbuf *m, const struct ieee80211_bpf_params *params __unused, bool freem) { struct lkpi_sta *lsta; int error; lsta = ni->ni_drv_data; LKPI_80211_LSTA_TXQ_LOCK(lsta); #if 0 if (!lsta->added_to_drv || !lsta->txq_ready) { #else /* * Backout this part of 886653492945f which breaks rtw88 or * in general drivers without (*sta_state)() but only the * legacy fallback to (*sta_add)(). */ if (!lsta->txq_ready) { #endif LKPI_80211_LSTA_TXQ_UNLOCK(lsta); if (freem) m_free(m); return (ENETDOWN); } /* Queue the packet and enqueue the task to handle it. */ error = mbufq_enqueue(&lsta->txq, m); if (error != 0) { LKPI_80211_LSTA_TXQ_UNLOCK(lsta); if (freem) m_free(m); #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE_TX) ic_printf(ni->ni_ic, "%s: mbufq_enqueue failed: %d\n", __func__, error); #endif return (ENETDOWN); } taskqueue_enqueue(taskqueue_thread, &lsta->txq_task); LKPI_80211_LSTA_TXQ_UNLOCK(lsta); #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE_TX) printf("%s:%d lsta %p ni %p %6D mbuf_qlen %d\n", __func__, __LINE__, lsta, ni, ni->ni_macaddr, ":", mbufq_len(&lsta->txq)); #endif return (0); } static int lkpi_ic_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, const struct ieee80211_bpf_params *params __unused) { return (lkpi_xmit(ni, m, NULL, true)); } #ifdef LKPI_80211_HW_CRYPTO /* * This is a bit of a hack given we know we are operating on a * single frame and we know that hardware will deal with it. * But otherwise the enmic bit and the encrypt bit need to be * decoupled. */ static int lkpi_hw_crypto_prepare_tkip(struct ieee80211_key *k, struct ieee80211_key_conf *kc, struct sk_buff *skb) { struct ieee80211_hdr *hdr; uint32_t hlen, hdrlen; uint8_t *p; /* * TKIP only happens on data. */ hdr = (void *)skb->data; if (!ieee80211_is_data_present(hdr->frame_control)) return (0); /* * "enmic" (though we do not do that). */ /* any conditions to not apply this? */ if (skb_tailroom(skb) < k->wk_cipher->ic_miclen) return (ENOBUFS); p = skb_put(skb, k->wk_cipher->ic_miclen); if ((kc->flags & IEEE80211_KEY_FLAG_PUT_MIC_SPACE) != 0) goto encrypt; /* * (*enmic) which we hopefully do not have to do with hw accel. * That means if we make it here we have a problem. */ TODO("(*enmic)"); return (ENXIO); encrypt: /* * "encrypt" (though we do not do that). */ /* * Check if we have anything to do as requested by driver * or if we are done? */ if ((kc->flags & IEEE80211_KEY_FLAG_PUT_IV_SPACE) == 0 && (kc->flags & IEEE80211_KEY_FLAG_GENERATE_IV) == 0) return (0); hlen = k->wk_cipher->ic_header; if (skb_headroom(skb) < hlen) return (ENOBUFS); hdr = (void *)skb->data; hdrlen = ieee80211_hdrlen(hdr->frame_control); p = skb_push(skb, hlen); memmove(p, p + hlen, hdrlen); /* If driver request space only we are done. */ if ((kc->flags & IEEE80211_KEY_FLAG_PUT_IV_SPACE) != 0) return (0); p += hdrlen; k->wk_cipher->ic_setiv(k, p); /* If we make it hear we do sw encryption. */ TODO("sw encrypt"); return (ENXIO); } static int lkpi_hw_crypto_prepare_ccmp(struct ieee80211_key *k, struct ieee80211_key_conf *kc, struct sk_buff *skb) { struct ieee80211_hdr *hdr; uint32_t hlen, hdrlen; uint8_t *p; hdr = (void *)skb->data; /* * Check if we have anythig to do as requested by driver * or if we are done? */ if ((kc->flags & IEEE80211_KEY_FLAG_PUT_IV_SPACE) == 0 && (kc->flags & IEEE80211_KEY_FLAG_GENERATE_IV) == 0 && /* MFP */ !((kc->flags & IEEE80211_KEY_FLAG_GENERATE_IV_MGMT) != 0 && ieee80211_is_mgmt(hdr->frame_control))) return (0); hlen = k->wk_cipher->ic_header; if (skb_headroom(skb) < hlen) return (ENOBUFS); hdrlen = ieee80211_hdrlen(hdr->frame_control); p = skb_push(skb, hlen); memmove(p, p + hlen, hdrlen); /* If driver request space only we are done. */ if ((kc->flags & IEEE80211_KEY_FLAG_PUT_IV_SPACE) != 0) return (0); p += hdrlen; k->wk_cipher->ic_setiv(k, p); return (0); } static int lkpi_hw_crypto_prepare(struct lkpi_sta *lsta, struct ieee80211_key *k, struct sk_buff *skb) { struct ieee80211_tx_info *info; struct ieee80211_key_conf *kc; KASSERT(lsta != NULL, ("%s: lsta is NULL", __func__)); KASSERT(k != NULL, ("%s: key is NULL", __func__)); KASSERT(skb != NULL, ("%s: skb is NULL", __func__)); kc = lsta->kc[k->wk_keyix]; info = IEEE80211_SKB_CB(skb); info->control.hw_key = kc; /* MUST NOT happen. KASSERT? */ if (kc == NULL) { ic_printf(lsta->ni->ni_ic, "%s: lsta %p k %p skb %p, " "kc is NULL on hw crypto offload\n", __func__, lsta, k, skb); return (ENXIO); } switch (kc->cipher) { case WLAN_CIPHER_SUITE_TKIP: return (lkpi_hw_crypto_prepare_tkip(k, kc, skb)); case WLAN_CIPHER_SUITE_CCMP: return (lkpi_hw_crypto_prepare_ccmp(k, kc, skb)); case WLAN_CIPHER_SUITE_GCMP: return (lkpi_hw_crypto_prepare_ccmp(k, kc, skb)); case WLAN_CIPHER_SUITE_WEP40: case WLAN_CIPHER_SUITE_WEP104: case WLAN_CIPHER_SUITE_CCMP_256: case WLAN_CIPHER_SUITE_GCMP_256: case WLAN_CIPHER_SUITE_AES_CMAC: case WLAN_CIPHER_SUITE_BIP_CMAC_256: case WLAN_CIPHER_SUITE_BIP_GMAC_128: case WLAN_CIPHER_SUITE_BIP_GMAC_256: default: ic_printf(lsta->ni->ni_ic, "%s: lsta %p k %p kc %p skb %p, " "unsupported cipher suite %u (%s)\n", __func__, lsta, k, kc, skb, kc->cipher, lkpi_cipher_suite_to_name(kc->cipher)); return (EOPNOTSUPP); } } static uint8_t lkpi_hw_crypto_tailroom(struct lkpi_sta *lsta, struct ieee80211_key *k) { struct ieee80211_key_conf *kc; kc = lsta->kc[k->wk_keyix]; if (kc == NULL) return (0); IMPROVE("which other flags need tailroom?"); if (kc->flags & (IEEE80211_KEY_FLAG_PUT_MIC_SPACE)) return (32); /* Large enough to hold everything and pow2. */ return (0); } #endif static void lkpi_80211_txq_tx_one(struct lkpi_sta *lsta, struct mbuf *m) { struct ieee80211_node *ni; struct ieee80211_frame *wh; struct ieee80211_key *k; struct sk_buff *skb; struct ieee80211com *ic; struct lkpi_hw *lhw; struct ieee80211_hw *hw; struct lkpi_vif *lvif; struct ieee80211_vif *vif; struct ieee80211_channel *c; struct ieee80211_tx_control control; struct ieee80211_tx_info *info; struct ieee80211_sta *sta; struct ieee80211_hdr *hdr; struct lkpi_txq *ltxq; void *buf; ieee80211_keyix keyix; uint8_t ac, tid, tailroom; M_ASSERTPKTHDR(m); #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE_TX_DUMP) hexdump(mtod(m, const void *), m->m_len, "RAW TX (plain) ", 0); #endif ni = lsta->ni; ieee80211_output_seqno_assign(ni, -1, m); k = NULL; keyix = IEEE80211_KEYIX_NONE; wh = mtod(m, struct ieee80211_frame *); if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { #ifdef LKPI_80211_HW_CRYPTO if (lkpi_hwcrypto) { k = ieee80211_crypto_get_txkey(ni, m); if (k != NULL && lsta->kc[k->wk_keyix] != NULL) keyix = k->wk_keyix; } #endif /* Encrypt the frame if need be. */ if (keyix == IEEE80211_KEYIX_NONE) { /* Retrieve key for TX && do software encryption. */ k = ieee80211_crypto_encap(ni, m); if (k == NULL) { ieee80211_free_node(ni); m_freem(m); return; } } } ic = ni->ni_ic; lhw = ic->ic_softc; hw = LHW_TO_HW(lhw); c = ni->ni_chan; if (ieee80211_radiotap_active_vap(ni->ni_vap)) { struct lkpi_radiotap_tx_hdr *rtap; rtap = &lhw->rtap_tx; rtap->wt_flags = 0; if (k != NULL) rtap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; if (m->m_flags & M_FRAG) rtap->wt_flags |= IEEE80211_RADIOTAP_F_FRAG; IMPROVE(); rtap->wt_rate = 0; if (c != NULL && c != IEEE80211_CHAN_ANYC) { rtap->wt_chan_freq = htole16(c->ic_freq); rtap->wt_chan_flags = htole16(c->ic_flags); } ieee80211_radiotap_tx(ni->ni_vap, m); } #ifdef LKPI_80211_HW_CRYPTO if (lkpi_hwcrypto && keyix != IEEE80211_KEYIX_NONE) tailroom = lkpi_hw_crypto_tailroom(lsta, k); else #endif tailroom = 0; /* * net80211 should handle hw->extra_tx_headroom. * Though for as long as we are copying we don't mind. * XXX-BZ rtw88 asks for too much headroom for ipv6+tcp: * https://lists.freebsd.org/archives/freebsd-transport/2022-February/000012.html */ skb = dev_alloc_skb(hw->extra_tx_headroom + tailroom + m->m_pkthdr.len); if (skb == NULL) { static uint8_t skb_alloc_failures = 0; if (skb_alloc_failures++ == 0) { int tid; sta = LSTA_TO_STA(lsta); ic_printf(ic, "ERROR %s: skb alloc failed %d + %d, lsta %p sta %p ni %p\n", __func__, hw->extra_tx_headroom, m->m_pkthdr.len, lsta, sta, ni); for (tid = 0; tid < nitems(sta->txq); tid++) { if (sta->txq[tid] == NULL) continue; ltxq = TXQ_TO_LTXQ(sta->txq[tid]); ic_printf(ic, " tid %d ltxq %p seen_dequeue %d stopped %d skb_queue_len %u\n", tid, ltxq, ltxq->seen_dequeue, ltxq->stopped, skb_queue_len(<xq->skbq)); } } ieee80211_free_node(ni); m_freem(m); return; } skb_reserve(skb, hw->extra_tx_headroom); /* XXX-BZ we need a SKB version understanding mbuf. */ /* Save the mbuf for ieee80211_tx_complete(). */ skb->m_free_func = lkpi_ieee80211_free_skb_mbuf; skb->m = m; #if 0 skb_put_data(skb, m->m_data, m->m_pkthdr.len); #else buf = skb_put(skb, m->m_pkthdr.len); m_copydata(m, 0, m->m_pkthdr.len, buf); #endif /* Save the ni. */ m->m_pkthdr.PH_loc.ptr = ni; lvif = VAP_TO_LVIF(ni->ni_vap); vif = LVIF_TO_VIF(lvif); hdr = (void *)skb->data; tid = linuxkpi_ieee80211_get_tid(hdr, true); if (tid == IEEE80211_NONQOS_TID) { /* == IEEE80211_NUM_TIDS */ if (!ieee80211_is_data(hdr->frame_control)) { /* MGMT and CTRL frames go on TID 7/VO. */ skb->priority = 7; ac = IEEE80211_AC_VO; } else { /* Other non-QOS traffic goes to BE. */ /* Contrary to net80211 we MUST NOT promote M_EAPOL. */ skb->priority = 0; ac = IEEE80211_AC_BE; } } else { skb->priority = tid & IEEE80211_QOS_CTL_TID_MASK; ac = ieee80211e_up_to_ac[tid & 7]; } skb_set_queue_mapping(skb, ac); info = IEEE80211_SKB_CB(skb); info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS; /* Slight delay; probably only happens on scanning so fine? */ if (c == NULL || c == IEEE80211_CHAN_ANYC) c = ic->ic_curchan; info->band = lkpi_net80211_chan_to_nl80211_band(c); info->hw_queue = vif->hw_queue[ac]; if ((m->m_flags & M_EAPOL) != 0) { info->control.flags |= IEEE80211_TX_CTRL_PORT_CTRL_PROTO; info->flags |= IEEE80211_TX_CTL_USE_MINRATE; /* mt76 */ } info->control.vif = vif; /* XXX-BZ info->control.rates */ #ifdef __notyet__ #ifdef LKPI_80211_HT info->control.rts_cts_rate_idx= info->control.use_rts= /* RTS */ info->control.use_cts_prot= /* RTS/CTS*/ #endif #endif sta = LSTA_TO_STA(lsta); #ifdef LKPI_80211_HW_CRYPTO if (lkpi_hwcrypto && keyix != IEEE80211_KEYIX_NONE) { int error; error = lkpi_hw_crypto_prepare(lsta, k, skb); if (error != 0) { /* * We only have to free the skb which will free the * mbuf and release the reference on the ni. */ dev_kfree_skb(skb); return; } /* Reset header as data might have moved. */ hdr = (void *)skb->data; } #endif IMPROVE(); ltxq = NULL; if (!ieee80211_is_data_present(hdr->frame_control)) { if (vif->type == NL80211_IFTYPE_STATION && lsta->added_to_drv && sta->txq[IEEE80211_NUM_TIDS] != NULL) ltxq = TXQ_TO_LTXQ(sta->txq[IEEE80211_NUM_TIDS]); } else if (lsta->added_to_drv && sta->txq[skb->priority] != NULL) { ltxq = TXQ_TO_LTXQ(sta->txq[skb->priority]); } if (ltxq == NULL) goto ops_tx; KASSERT(ltxq != NULL, ("%s: lsta %p sta %p m %p skb %p " "ltxq %p != NULL\n", __func__, lsta, sta, m, skb, ltxq)); LKPI_80211_LTXQ_LOCK(ltxq); skb_queue_tail(<xq->skbq, skb); ltxq->frms_enqueued++; #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE_TX) printf("%s:%d mo_wake_tx_queue :: %d %lu lsta %p sta %p " "ni %p %6D skb %p lxtq %p { qlen %u, ac %d tid %u } " "WAKE_TX_Q ac %d prio %u qmap %u\n", __func__, __LINE__, curthread->td_tid, jiffies, lsta, sta, ni, ni->ni_macaddr, ":", skb, ltxq, skb_queue_len(<xq->skbq), ltxq->txq.ac, ltxq->txq.tid, ac, skb->priority, skb->qmap); #endif LKPI_80211_LTXQ_UNLOCK(ltxq); wiphy_lock(hw->wiphy); lkpi_80211_mo_wake_tx_queue(hw, <xq->txq, true); wiphy_unlock(hw->wiphy); return; ops_tx: #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE_TX) printf("%s:%d mo_tx :: lsta %p sta %p ni %p %6D skb %p " "TX ac %d prio %u qmap %u\n", __func__, __LINE__, lsta, sta, ni, ni->ni_macaddr, ":", skb, ac, skb->priority, skb->qmap); #endif memset(&control, 0, sizeof(control)); control.sta = sta; wiphy_lock(hw->wiphy); lkpi_80211_mo_tx(hw, &control, skb); lsta->frms_tx++; wiphy_unlock(hw->wiphy); } static void lkpi_80211_txq_task(void *ctx, int pending) { struct lkpi_sta *lsta; struct mbufq mq; struct mbuf *m; bool shall_tx; lsta = ctx; #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE_TX) printf("%s:%d lsta %p ni %p %6D pending %d mbuf_qlen %d\n", __func__, __LINE__, lsta, lsta->ni, lsta->ni->ni_macaddr, ":", pending, mbufq_len(&lsta->txq)); #endif mbufq_init(&mq, IFQ_MAXLEN); LKPI_80211_LSTA_TXQ_LOCK(lsta); /* * Do not re-check lsta->txq_ready here; we may have a pending * disassoc/deauth frame still. On the contrary if txq_ready is * false we do not have a valid sta anymore in the firmware so no * point to try to TX. * We also use txq_ready as a semaphore and will drain the txq manually * if needed on our way towards SCAN/INIT in the state machine. */ #if 0 shall_tx = lsta->added_to_drv && lsta->txq_ready; #else /* * Backout this part of 886653492945f which breaks rtw88 or * in general drivers without (*sta_state)() but only the * legacy fallback to (*sta_add)(). */ shall_tx = lsta->txq_ready; #endif if (__predict_true(shall_tx)) mbufq_concat(&mq, &lsta->txq); /* * else a state change will push the packets out manually or * lkpi_lsta_free() will drain the lsta->txq and free the mbufs. */ LKPI_80211_LSTA_TXQ_UNLOCK(lsta); m = mbufq_dequeue(&mq); while (m != NULL) { lkpi_80211_txq_tx_one(lsta, m); m = mbufq_dequeue(&mq); } } static int lkpi_ic_transmit(struct ieee80211com *ic, struct mbuf *m) { /* XXX TODO */ IMPROVE(); /* Quick and dirty cheating hack. */ struct ieee80211_node *ni; ni = (struct ieee80211_node *)m->m_pkthdr.rcvif; return (lkpi_xmit(ni, m, NULL, false)); } #ifdef LKPI_80211_HT static int lkpi_ic_recv_action(struct ieee80211_node *ni, const struct ieee80211_frame *wh, const uint8_t *frm, const uint8_t *efrm) { struct ieee80211com *ic; struct lkpi_hw *lhw; ic = ni->ni_ic; lhw = ic->ic_softc; IMPROVE_HT("recv_action called; nothing to do in lkpi; make debugging"); return (lhw->ic_recv_action(ni, wh, frm, efrm)); } static int lkpi_ic_send_action(struct ieee80211_node *ni, int category, int action, void *sa) { struct ieee80211com *ic; struct lkpi_hw *lhw; ic = ni->ni_ic; lhw = ic->ic_softc; IMPROVE_HT("send_action called; nothing to do in lkpi; make debugging"); return (lhw->ic_send_action(ni, category, action, sa)); } static int lkpi_ic_ampdu_enable(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap) { struct ieee80211com *ic; struct lkpi_hw *lhw; ic = ni->ni_ic; lhw = ic->ic_softc; IMPROVE_HT("ieee80211_ampdu_enable called; nothing to do in lkpi for now; make debugging"); return (lhw->ic_ampdu_enable(ni, tap)); } /* * (*ic_addba_request)() is called by ieee80211_ampdu_request() before * calling send_action(CAT_BA, BA_ADDBA_REQUEST). * * NB: returns 0 on ERROR! */ static int lkpi_ic_addba_request(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap, int dialogtoken, int baparamset, int batimeout) { struct ieee80211com *ic; struct lkpi_hw *lhw; struct ieee80211_hw *hw; struct ieee80211vap *vap; struct lkpi_vif *lvif; struct ieee80211_vif *vif; struct lkpi_sta *lsta; struct ieee80211_sta *sta; struct ieee80211_ampdu_params params = { }; int error; ic = ni->ni_ic; lhw = ic->ic_softc; hw = LHW_TO_HW(lhw); vap = ni->ni_vap; lvif = VAP_TO_LVIF(vap); vif = LVIF_TO_VIF(lvif); lsta = ni->ni_drv_data; sta = LSTA_TO_STA(lsta); if (!lsta->added_to_drv) { ic_printf(ic, "%s: lsta %p ni %p, sta %p not added to firmware\n", __func__, lsta, ni, sta); return (0); } params.sta = sta; params.action = IEEE80211_AMPDU_TX_START; /* Keep 0 here! */ params.buf_size = 0; params.timeout = 0; params.ssn = tap->txa_start & (IEEE80211_SEQ_RANGE-1); params.tid = tap->txa_tid; params.amsdu = false; IEEE80211_UNLOCK(ic); wiphy_lock(hw->wiphy); error = lkpi_80211_mo_ampdu_action(hw, vif, ¶ms); wiphy_unlock(hw->wiphy); IEEE80211_LOCK(ic); if (error != 0) { ic_printf(ic, "%s: mo_ampdu_action returned %d. ni %p tap %p\n", __func__, error, ni, tap); return (0); } return (lhw->ic_addba_request(ni, tap, dialogtoken, baparamset, batimeout)); } /* * (*ic_addba_response)() is called from ht_recv_action_ba_addba_response() * and calls the default ieee80211_addba_response() which always returns 1. * * NB: No error checking in net80211! * Staying with 0 is an error. */ static int lkpi_ic_addba_response(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap, int status, int baparamset, int batimeout) { struct ieee80211com *ic; struct lkpi_hw *lhw; struct ieee80211_hw *hw; struct ieee80211vap *vap; struct lkpi_vif *lvif; struct ieee80211_vif *vif; struct lkpi_sta *lsta; struct ieee80211_sta *sta; struct ieee80211_ampdu_params params = { }; int error; ic = ni->ni_ic; lhw = ic->ic_softc; hw = LHW_TO_HW(lhw); vap = ni->ni_vap; lvif = VAP_TO_LVIF(vap); vif = LVIF_TO_VIF(lvif); lsta = ni->ni_drv_data; sta = LSTA_TO_STA(lsta); if (!lsta->added_to_drv) { ic_printf(ic, "%s: lsta %p ni %p, sta %p not added to firmware\n", __func__, lsta, ni, sta); return (0); } if (status == IEEE80211_STATUS_SUCCESS) { params.sta = sta; params.action = IEEE80211_AMPDU_TX_OPERATIONAL; params.buf_size = tap->txa_wnd; params.timeout = 0; params.ssn = 0; params.tid = tap->txa_tid; if ((tap->txa_flags & IEEE80211_AGGR_AMSDU) != 0) params.amsdu = true; else params.amsdu = false; } else { /* We need to free the allocated resources. */ params.sta = sta; switch (status) { /* params.action = FLUSH, FLUSH_CONT */ default: params.action = IEEE80211_AMPDU_TX_STOP_CONT; break; } params.buf_size = 0; params.timeout = 0; params.ssn = 0; params.tid = tap->txa_tid; params.amsdu = false; } IEEE80211_UNLOCK(ic); wiphy_lock(hw->wiphy); error = lkpi_80211_mo_ampdu_action(hw, vif, ¶ms); wiphy_unlock(hw->wiphy); IEEE80211_LOCK(ic); if (error != 0) { ic_printf(ic, "%s: mo_ampdu_action returned %d. ni %p tap %p\n", __func__, error, ni, tap); return (0); } IMPROVE_HT("who unleashes the TXQ? and when?, do we need to ni->ni_txseqs[tid] = tap->txa_start & 0xfff;"); return (lhw->ic_addba_response(ni, tap, status, baparamset, batimeout)); } /* * (*ic_addba_stop)() is called from ampdu_tx_stop(), ht_recv_action_ba_delba(), * and ieee80211_ampdu_stop() and calls the default ieee80211_addba_stop(). */ static void lkpi_ic_addba_stop(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap) { struct ieee80211com *ic; struct lkpi_hw *lhw; struct ieee80211_hw *hw; struct ieee80211vap *vap; struct lkpi_vif *lvif; struct ieee80211_vif *vif; struct lkpi_sta *lsta; struct ieee80211_sta *sta; struct ieee80211_ampdu_params params = { }; int error; ic = ni->ni_ic; lhw = ic->ic_softc; hw = LHW_TO_HW(lhw); vap = ni->ni_vap; lvif = VAP_TO_LVIF(vap); vif = LVIF_TO_VIF(lvif); lsta = ni->ni_drv_data; sta = LSTA_TO_STA(lsta); if (!lsta->added_to_drv) { ic_printf(ic, "%s: lsta %p ni %p, sta %p not added to firmware\n", __func__, lsta, ni, sta); goto n80211; } /* We need to free the allocated resources. */ params.sta = sta; IMPROVE("net80211 does not provide a reason to us"); params.action = IEEE80211_AMPDU_TX_STOP_CONT; /* params.action = FLUSH, FLUSH_CONT */ params.buf_size = 0; params.timeout = 0; params.ssn = 0; params.tid = tap->txa_tid; params.amsdu = false; IEEE80211_UNLOCK(ic); wiphy_lock(hw->wiphy); error = lkpi_80211_mo_ampdu_action(hw, vif, ¶ms); wiphy_unlock(hw->wiphy); IEEE80211_LOCK(ic); if (error != 0) { ic_printf(ic, "%s: mo_ampdu_action returned %d. ni %p tap %p\n", __func__, error, ni, tap); goto n80211; } IMPROVE_HT("anyting else?"); n80211: lhw->ic_addba_stop(ni, tap); } static void lkpi_ic_addba_response_timeout(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap) { struct ieee80211com *ic; struct lkpi_hw *lhw; ic = ni->ni_ic; lhw = ic->ic_softc; IMPROVE_HT(); lhw->ic_addba_response_timeout(ni, tap); } static void lkpi_ic_bar_response(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap, int status) { struct ieee80211com *ic; struct lkpi_hw *lhw; ic = ni->ni_ic; lhw = ic->ic_softc; IMPROVE_HT(); lhw->ic_bar_response(ni, tap, status); } static int lkpi_ic_ampdu_rx_start(struct ieee80211_node *ni, struct ieee80211_rx_ampdu *rap, int baparamset, int batimeout, int baseqctl) { struct ieee80211com *ic; struct lkpi_hw *lhw; struct ieee80211_hw *hw; struct ieee80211vap *vap; struct lkpi_vif *lvif; struct ieee80211_vif *vif; struct lkpi_sta *lsta; struct ieee80211_sta *sta; struct ieee80211_ampdu_params params = { }; int error; ic = ni->ni_ic; lhw = ic->ic_softc; hw = LHW_TO_HW(lhw); vap = ni->ni_vap; lvif = VAP_TO_LVIF(vap); vif = LVIF_TO_VIF(lvif); lsta = ni->ni_drv_data; sta = LSTA_TO_STA(lsta); IEEE80211_UNLOCK_ASSERT(ic); if (!lsta->added_to_drv) { ic_printf(ic, "%s: lsta %p ni %p vap %p, sta %p not added to firmware\n", __func__, lsta, ni, vap, sta); return (-ENXIO); } if (lsta->state != IEEE80211_STA_AUTHORIZED) { ic_printf(ic, "%s: lsta %p ni %p vap %p, sta %p state %d not AUTHORIZED\n", __func__, lsta, ni, vap, sta, lsta->state); return (-ENXIO); } params.sta = sta; params.action = IEEE80211_AMPDU_RX_START; params.buf_size = _IEEE80211_MASKSHIFT(le16toh(baparamset), IEEE80211_BAPS_BUFSIZ); if (params.buf_size == 0) params.buf_size = IEEE80211_MAX_AMPDU_BUF_HT; else params.buf_size = min(params.buf_size, IEEE80211_MAX_AMPDU_BUF_HT); if (hw->max_rx_aggregation_subframes > 0 && params.buf_size > hw->max_rx_aggregation_subframes) params.buf_size = hw->max_rx_aggregation_subframes; params.timeout = le16toh(batimeout); params.ssn = _IEEE80211_MASKSHIFT(le16toh(baseqctl), IEEE80211_BASEQ_START); params.tid = _IEEE80211_MASKSHIFT(le16toh(baparamset), IEEE80211_BAPS_TID); /* Based on net80211::ampdu_rx_start(). */ if ((vap->iv_htcaps & IEEE80211_HTC_RX_AMSDU_AMPDU) && (_IEEE80211_MASKSHIFT(baparamset, IEEE80211_BAPS_AMSDU))) params.amsdu = true; else params.amsdu = false; wiphy_lock(hw->wiphy); error = lkpi_80211_mo_ampdu_action(hw, vif, ¶ms); wiphy_unlock(hw->wiphy); if (error != 0) { ic_printf(ic, "%s: mo_ampdu_action returned %d. ni %p rap %p\n", __func__, error, ni, rap); return (error); } if (!ieee80211_hw_check(hw, SUPPORTS_REORDERING_BUFFER)) { IMPROVE("%s: TODO: SUPPORTS_REORDERING_BUFFER not set; check net80211\n", __func__); } IMPROVE_HT("net80211 is missing the error check on return and assumes success"); error = lhw->ic_ampdu_rx_start(ni, rap, baparamset, batimeout, baseqctl); return (error); } static void lkpi_ic_ampdu_rx_stop(struct ieee80211_node *ni, struct ieee80211_rx_ampdu *rap) { struct ieee80211com *ic; struct lkpi_hw *lhw; struct ieee80211_hw *hw; struct ieee80211vap *vap; struct lkpi_vif *lvif; struct ieee80211_vif *vif; struct lkpi_sta *lsta; struct ieee80211_sta *sta; struct ieee80211_ampdu_params params = { }; int error; uint8_t tid; bool ic_locked; ic = ni->ni_ic; lhw = ic->ic_softc; /* * We should not (cannot) call into mac80211 ops with AMPDU_RX_STOP if * we did not START. Some drivers pass it down to firmware which will * simply barf and net80211 calls ieee80211_ht_node_cleanup() from * ieee80211_ht_node_init() amongst others which will iterate over all * tid and call ic_ampdu_rx_stop() unconditionally. * XXX net80211 should probably be more "gentle" in these cases and * track some state itself. */ if ((rap->rxa_flags & IEEE80211_AGGR_RUNNING) == 0) goto net80211_only; hw = LHW_TO_HW(lhw); vap = ni->ni_vap; lvif = VAP_TO_LVIF(vap); vif = LVIF_TO_VIF(lvif); lsta = ni->ni_drv_data; if (lsta == NULL) { ic_printf(ic, "%s: lsta %p ni %p vap %p, lsta is NULL\n", __func__, lsta, ni, vap); goto net80211_only; } sta = LSTA_TO_STA(lsta); if (!lsta->added_to_drv) { ic_printf(ic, "%s: lsta %p ni %p vap %p, sta %p not added to firmware\n", __func__, lsta, ni, vap, sta); goto net80211_only; } if (lsta->state != IEEE80211_STA_AUTHORIZED) { ic_printf(ic, "%s: lsta %p ni %p vap %p, sta %p state %d not AUTHORIZED\n", __func__, lsta, ni, vap, sta, lsta->state); goto net80211_only; } IMPROVE_HT("This really should be passed from ht_recv_action_ba_delba."); for (tid = 0; tid < WME_NUM_TID; tid++) { if (&ni->ni_rx_ampdu[tid] == rap) break; } if (tid == WME_NUM_TID) { ic_printf(ic, "%s: lsta %p ni %p vap %p, sta %p TID not found\n", __func__, lsta, ni, vap, sta); goto net80211_only; } params.sta = sta; params.action = IEEE80211_AMPDU_RX_STOP; params.buf_size = 0; params.timeout = 0; params.ssn = 0; params.tid = tid; params.amsdu = false; ic_locked = IEEE80211_IS_LOCKED(ic); if (ic_locked) IEEE80211_UNLOCK(ic); wiphy_lock(hw->wiphy); error = lkpi_80211_mo_ampdu_action(hw, vif, ¶ms); wiphy_unlock(hw->wiphy); if (ic_locked) IEEE80211_LOCK(ic); if (error != 0) ic_printf(ic, "%s: mo_ampdu_action returned %d. ni %p rap %p\n", __func__, error, ni, rap); net80211_only: lhw->ic_ampdu_rx_stop(ni, rap); } #endif static void lkpi_ic_getradiocaps_ht(struct ieee80211com *ic, struct ieee80211_hw *hw, uint8_t *bands, int *chan_flags, enum nl80211_band band) { #ifdef LKPI_80211_HT struct ieee80211_sta_ht_cap *ht_cap; ht_cap = &hw->wiphy->bands[band]->ht_cap; if (!ht_cap->ht_supported) return; switch (band) { case NL80211_BAND_2GHZ: setbit(bands, IEEE80211_MODE_11NG); break; case NL80211_BAND_5GHZ: setbit(bands, IEEE80211_MODE_11NA); break; default: IMPROVE("Unsupported band %d", band); return; } ic->ic_htcaps = IEEE80211_HTC_HT; /* HT operation */ /* * Rather than manually checking each flag and * translating IEEE80211_HT_CAP_ to IEEE80211_HTCAP_, * simply copy the 16bits. */ ic->ic_htcaps |= ht_cap->cap; /* Then deal with the other flags. */ if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) ic->ic_htcaps |= IEEE80211_HTC_AMPDU; #ifdef __notyet__ if (ieee80211_hw_check(hw, TX_AMSDU)) ic->ic_htcaps |= IEEE80211_HTC_AMSDU; if (ieee80211_hw_check(hw, SUPPORTS_AMSDU_IN_AMPDU)) ic->ic_htcaps |= (IEEE80211_HTC_RX_AMSDU_AMPDU | IEEE80211_HTC_TX_AMSDU_AMPDU); #endif IMPROVE("PS, ampdu_*, ht_cap.mcs.tx_params, ..."); /* Only add HT40 channels if supported. */ if ((ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40) != 0 && chan_flags != NULL) *chan_flags |= NET80211_CBW_FLAG_HT40; #endif } static void lkpi_ic_getradiocaps(struct ieee80211com *ic, int maxchan, int *n, struct ieee80211_channel *c) { struct lkpi_hw *lhw; struct ieee80211_hw *hw; struct linuxkpi_ieee80211_channel *channels; uint8_t bands[IEEE80211_MODE_BYTES]; int chan_flags, error, i, nchans; /* Channels */ lhw = ic->ic_softc; hw = LHW_TO_HW(lhw); /* NL80211_BAND_2GHZ */ nchans = 0; if (hw->wiphy->bands[NL80211_BAND_2GHZ] != NULL) nchans = hw->wiphy->bands[NL80211_BAND_2GHZ]->n_channels; if (nchans > 0) { memset(bands, 0, sizeof(bands)); chan_flags = 0; setbit(bands, IEEE80211_MODE_11B); /* XXX-BZ unclear how to check for 11g. */ IMPROVE("the bitrates may have flags?"); setbit(bands, IEEE80211_MODE_11G); lkpi_ic_getradiocaps_ht(ic, hw, bands, &chan_flags, NL80211_BAND_2GHZ); channels = hw->wiphy->bands[NL80211_BAND_2GHZ]->channels; for (i = 0; i < nchans && *n < maxchan; i++) { uint32_t nflags = 0; int cflags = chan_flags; if (channels[i].flags & IEEE80211_CHAN_DISABLED) { ic_printf(ic, "%s: Skipping disabled chan " "[%u/%u/%#x]\n", __func__, channels[i].hw_value, channels[i].center_freq, channels[i].flags); continue; } if (channels[i].flags & IEEE80211_CHAN_NO_IR) nflags |= (IEEE80211_CHAN_NOADHOC|IEEE80211_CHAN_PASSIVE); if (channels[i].flags & IEEE80211_CHAN_RADAR) nflags |= IEEE80211_CHAN_DFS; if (channels[i].flags & IEEE80211_CHAN_NO_160MHZ) cflags &= ~(NET80211_CBW_FLAG_VHT160|NET80211_CBW_FLAG_VHT80P80); if (channels[i].flags & IEEE80211_CHAN_NO_80MHZ) cflags &= ~NET80211_CBW_FLAG_VHT80; /* XXX how to map the remaining enum ieee80211_channel_flags? */ if (channels[i].flags & IEEE80211_CHAN_NO_HT40) cflags &= ~NET80211_CBW_FLAG_HT40; error = ieee80211_add_channel_cbw(c, maxchan, n, ieee80211_mhz2ieee(channels[i].center_freq, lkpi_nl80211_band_to_net80211_band(channels[i].band)), channels[i].center_freq, channels[i].max_power, nflags, bands, cflags); /* net80211::ENOBUFS: *n >= maxchans */ if (error != 0 && error != ENOBUFS) ic_printf(ic, "%s: Adding chan %u/%u/%#x/%#x/%#x/%#x " "returned error %d\n", __func__, channels[i].hw_value, channels[i].center_freq, channels[i].flags, nflags, chan_flags, cflags, error); if (error != 0) break; } } /* NL80211_BAND_5GHZ */ nchans = 0; if (hw->wiphy->bands[NL80211_BAND_5GHZ] != NULL) nchans = hw->wiphy->bands[NL80211_BAND_5GHZ]->n_channels; if (nchans > 0) { memset(bands, 0, sizeof(bands)); chan_flags = 0; setbit(bands, IEEE80211_MODE_11A); lkpi_ic_getradiocaps_ht(ic, hw, bands, &chan_flags, NL80211_BAND_5GHZ); #ifdef LKPI_80211_VHT if (hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.vht_supported) { ic->ic_flags_ext |= IEEE80211_FEXT_VHT; ic->ic_vht_cap.vht_cap_info = hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap; ic->ic_vht_cap.supp_mcs = hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.vht_mcs; setbit(bands, IEEE80211_MODE_VHT_5GHZ); chan_flags |= NET80211_CBW_FLAG_VHT80; if (IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_IS_160MHZ( ic->ic_vht_cap.vht_cap_info)) chan_flags |= NET80211_CBW_FLAG_VHT160; if (IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_IS_160_80P80MHZ( ic->ic_vht_cap.vht_cap_info)) chan_flags |= NET80211_CBW_FLAG_VHT80P80; } #endif channels = hw->wiphy->bands[NL80211_BAND_5GHZ]->channels; for (i = 0; i < nchans && *n < maxchan; i++) { uint32_t nflags = 0; int cflags = chan_flags; if (channels[i].flags & IEEE80211_CHAN_DISABLED) { ic_printf(ic, "%s: Skipping disabled chan " "[%u/%u/%#x]\n", __func__, channels[i].hw_value, channels[i].center_freq, channels[i].flags); continue; } if (channels[i].flags & IEEE80211_CHAN_NO_IR) nflags |= (IEEE80211_CHAN_NOADHOC|IEEE80211_CHAN_PASSIVE); if (channels[i].flags & IEEE80211_CHAN_RADAR) nflags |= IEEE80211_CHAN_DFS; if (channels[i].flags & IEEE80211_CHAN_NO_160MHZ) cflags &= ~(NET80211_CBW_FLAG_VHT160|NET80211_CBW_FLAG_VHT80P80); if (channels[i].flags & IEEE80211_CHAN_NO_80MHZ) cflags &= ~NET80211_CBW_FLAG_VHT80; /* XXX hwo to map the remaining enum ieee80211_channel_flags? */ if (channels[i].flags & IEEE80211_CHAN_NO_HT40) cflags &= ~NET80211_CBW_FLAG_HT40; error = ieee80211_add_channel_cbw(c, maxchan, n, ieee80211_mhz2ieee(channels[i].center_freq, lkpi_nl80211_band_to_net80211_band(channels[i].band)), channels[i].center_freq, channels[i].max_power, nflags, bands, cflags); /* net80211::ENOBUFS: *n >= maxchans */ if (error != 0 && error != ENOBUFS) ic_printf(ic, "%s: Adding chan %u/%u/%#x/%#x/%#x/%#x " "returned error %d\n", __func__, channels[i].hw_value, channels[i].center_freq, channels[i].flags, nflags, chan_flags, cflags, error); if (error != 0) break; } } } static void * lkpi_ieee80211_ifalloc(void) { struct ieee80211com *ic; ic = malloc(sizeof(*ic), M_LKPI80211, M_WAITOK | M_ZERO); /* Setting these happens later when we have device information. */ ic->ic_softc = NULL; ic->ic_name = "linuxkpi"; return (ic); } struct ieee80211_hw * linuxkpi_ieee80211_alloc_hw(size_t priv_len, const struct ieee80211_ops *ops) { struct ieee80211_hw *hw; struct lkpi_hw *lhw; struct wiphy *wiphy; int ac; bool emuchanctx; /* * Do certain checks before starting to allocate resources. * Store results in temporary variables. */ /* ac1d519c01ca introduced emulating chanctx changes. */ emuchanctx = false; if (ops->add_chanctx == ieee80211_emulate_add_chanctx && ops->change_chanctx == ieee80211_emulate_change_chanctx && ops->remove_chanctx == ieee80211_emulate_remove_chanctx) { /* * If we emulate the chanctx ops, we must not have * assign_vif_chanctx and unassign_vif_chanctx. */ if (ops->assign_vif_chanctx != NULL || ops->unassign_vif_chanctx != NULL) { /* Fail gracefully. */ printf("%s: emulate_chanctx but " "assign_vif_chanctx %p != NULL || " "unassign_vif_chanctx %p != NULL\n", __func__, ops->assign_vif_chanctx, ops->unassign_vif_chanctx); return (NULL); } emuchanctx = true; } if (!emuchanctx && (ops->add_chanctx == ieee80211_emulate_add_chanctx || ops->change_chanctx == ieee80211_emulate_change_chanctx || ops->remove_chanctx == ieee80211_emulate_remove_chanctx)) { printf("%s: not emulating chanctx changes but emulating " "function set: %d/%d/%d\n", __func__, ops->add_chanctx == ieee80211_emulate_add_chanctx, ops->change_chanctx == ieee80211_emulate_change_chanctx, ops->remove_chanctx == ieee80211_emulate_remove_chanctx); return (NULL); } if (!emuchanctx && (ops->add_chanctx == NULL || ops->change_chanctx == NULL || ops->remove_chanctx == NULL || ops->assign_vif_chanctx == NULL || ops->unassign_vif_chanctx == NULL)) { printf("%s: not all functions set for chanctx operations " "(emulating chanctx %d): %p/%p/%p %p/%p\n", __func__, emuchanctx, ops->add_chanctx, ops->change_chanctx, ops->remove_chanctx, ops->assign_vif_chanctx, ops->unassign_vif_chanctx); return (NULL); } /* Get us and the driver data also allocated. */ wiphy = wiphy_new(&linuxkpi_mac80211cfgops, sizeof(*lhw) + priv_len); if (wiphy == NULL) return (NULL); lhw = wiphy_priv(wiphy); lhw->ops = ops; LKPI_80211_LHW_SCAN_LOCK_INIT(lhw); LKPI_80211_LHW_TXQ_LOCK_INIT(lhw); spin_lock_init(&lhw->txq_lock); sx_init_flags(&lhw->lvif_sx, "lhw-lvif", SX_RECURSE | SX_DUPOK); LKPI_80211_LHW_MC_LOCK_INIT(lhw); TAILQ_INIT(&lhw->lvif_head); __hw_addr_init(&lhw->mc_list); for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { spin_lock_init(&lhw->txq_scheduled_lock[ac]); lhw->txq_generation[ac] = 1; TAILQ_INIT(&lhw->txq_scheduled[ac]); } /* Chanctx_conf */ INIT_LIST_HEAD(&lhw->lchanctx_list); INIT_LIST_HEAD(&lhw->lchanctx_list_reserved); lhw->emulate_chanctx = emuchanctx; /* Deferred RX path. */ LKPI_80211_LHW_RXQ_LOCK_INIT(lhw); TASK_INIT(&lhw->rxq_task, 0, lkpi_80211_lhw_rxq_task, lhw); mbufq_init(&lhw->rxq, 32 * NAPI_POLL_WEIGHT); lhw->rxq_stopped = false; /* * XXX-BZ TODO make sure there is a "_null" function to all ops * not initialized. */ hw = LHW_TO_HW(lhw); hw->wiphy = wiphy; hw->conf.flags |= IEEE80211_CONF_IDLE; hw->priv = (void *)(lhw + 1); /* BSD Specific. */ lhw->ic = lkpi_ieee80211_ifalloc(); if (lhw->emulate_chanctx) ic_printf(lhw->ic, "Using chanctx emulation.\n"); IMPROVE(); return (hw); } void linuxkpi_ieee80211_iffree(struct ieee80211_hw *hw) { struct lkpi_hw *lhw; struct mbuf *m; int ac; lhw = HW_TO_LHW(hw); free(lhw->ic, M_LKPI80211); lhw->ic = NULL; /* * Drain the deferred RX path. */ LKPI_80211_LHW_RXQ_LOCK(lhw); lhw->rxq_stopped = true; LKPI_80211_LHW_RXQ_UNLOCK(lhw); /* Drain taskq, won't be restarted due to rxq_stopped being set. */ while (taskqueue_cancel(taskqueue_thread, &lhw->rxq_task, NULL) != 0) taskqueue_drain(taskqueue_thread, &lhw->rxq_task); /* Flush mbufq (make sure to release ni refs!). */ m = mbufq_dequeue(&lhw->rxq); while (m != NULL) { #ifdef LKPI_80211_USE_MTAG struct m_tag *mtag; mtag = m_tag_locate(m, MTAG_ABI_LKPI80211, LKPI80211_TAG_RXNI, NULL); if (mtag != NULL) { struct lkpi_80211_tag_rxni *rxni; rxni = (struct lkpi_80211_tag_rxni *)(mtag + 1); ieee80211_free_node(rxni->ni); } #else if (m->m_pkthdr.PH_loc.ptr != NULL) { struct ieee80211_node *ni; ni = m->m_pkthdr.PH_loc.ptr; ieee80211_free_node(ni); } #endif m_freem(m); m = mbufq_dequeue(&lhw->rxq); } KASSERT(mbufq_empty(&lhw->rxq), ("%s: lhw %p has rxq len %d != 0\n", __func__, lhw, mbufq_len(&lhw->rxq))); LKPI_80211_LHW_RXQ_LOCK_DESTROY(lhw); wiphy_lock(hw->wiphy); /* Chanctx_conf. */ if (!list_empty_careful(&lhw->lchanctx_list)) { struct lkpi_chanctx *lchanctx, *next; struct ieee80211_chanctx_conf *chanctx_conf; list_for_each_entry_safe(lchanctx, next, &lhw->lchanctx_list, entry) { if (lchanctx->added_to_drv) { /* In reality we should panic? */ chanctx_conf = &lchanctx->chanctx_conf; lkpi_80211_mo_remove_chanctx(hw, chanctx_conf); } list_del(&lchanctx->entry); /* No need to reset the lchanctx here as we will free it below. */ list_add_rcu(&lchanctx->entry, &lhw->lchanctx_list_reserved); } } if (!list_empty_careful(&lhw->lchanctx_list_reserved)) { struct lkpi_chanctx *lchanctx, *next; list_for_each_entry_safe(lchanctx, next, &lhw->lchanctx_list_reserved, entry) { list_del(&lchanctx->entry); if (lchanctx->added_to_drv) panic("%s: lchanctx %p on reserved list still added_to_drv\n", __func__, lchanctx); free(lchanctx, M_LKPI80211); } } wiphy_unlock(hw->wiphy); LKPI_80211_LHW_MC_LOCK(lhw); lkpi_cleanup_mcast_list_locked(lhw); LKPI_80211_LHW_MC_UNLOCK(lhw); for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) spin_lock_destroy(&lhw->txq_scheduled_lock[ac]); /* Cleanup more of lhw here or in wiphy_free()? */ spin_lock_destroy(&lhw->txq_lock); LKPI_80211_LHW_TXQ_LOCK_DESTROY(lhw); LKPI_80211_LHW_SCAN_LOCK_DESTROY(lhw); sx_destroy(&lhw->lvif_sx); LKPI_80211_LHW_MC_LOCK_DESTROY(lhw) IMPROVE(); } void linuxkpi_set_ieee80211_dev(struct ieee80211_hw *hw) { struct lkpi_hw *lhw; struct ieee80211com *ic; struct device *dev; lhw = HW_TO_LHW(hw); ic = lhw->ic; /* Save the backpointer from net80211 to LinuxKPI. */ ic->ic_softc = lhw; /* * Set a proper name before ieee80211_ifattach() if dev is set. * ath1xk also unset the dev so we need to check. * Also we will (ab)use this opportunity to register the * power management sub-children if thay exist (for suspend/resume). */ dev = wiphy_dev(hw->wiphy); if (dev != NULL) { ic->ic_name = dev_name(dev); if (dev->bsddev != NULL) { bus_identify_children(dev->bsddev); bus_enumerate_hinted_children(dev->bsddev); bus_topo_lock(); bus_attach_children(dev->bsddev); bus_topo_unlock(); } } else { TODO("adjust arguments to still have the old dev or go through " "the hoops of getting the bsddev from hw and detach; " "or do in XXX; check ath1kx drivers"); } /* XXX-BZ do we also need to set wiphy name? */ } struct ieee80211_hw * linuxkpi_wiphy_to_ieee80211_hw(struct wiphy *wiphy) { struct lkpi_hw *lhw; lhw = wiphy_priv(wiphy); return (LHW_TO_HW(lhw)); } static void lkpi_radiotap_attach(struct lkpi_hw *lhw) { struct ieee80211com *ic; ic = lhw->ic; ieee80211_radiotap_attach(ic, &lhw->rtap_tx.wt_ihdr, sizeof(lhw->rtap_tx), LKPI_RTAP_TX_FLAGS_PRESENT, &lhw->rtap_rx.wr_ihdr, sizeof(lhw->rtap_rx), LKPI_RTAP_RX_FLAGS_PRESENT); } int linuxkpi_ieee80211_ifattach(struct ieee80211_hw *hw) { struct ieee80211com *ic; struct lkpi_hw *lhw; int band, i; lhw = HW_TO_LHW(hw); ic = lhw->ic; /* We do it this late as wiphy->dev should be set for the name. */ lhw->workq = alloc_ordered_workqueue(wiphy_name(hw->wiphy), 0); if (lhw->workq == NULL) return (-EAGAIN); /* XXX-BZ figure this out how they count his... */ if (!is_zero_ether_addr(hw->wiphy->perm_addr)) { IEEE80211_ADDR_COPY(ic->ic_macaddr, hw->wiphy->perm_addr); } else if (hw->wiphy->n_addresses > 0) { /* We take the first one. */ IEEE80211_ADDR_COPY(ic->ic_macaddr, hw->wiphy->addresses[0].addr); } else { ic_printf(ic, "%s: warning, no hardware address!\n", __func__); } #ifdef __not_yet__ /* See comment in lkpi_80211_txq_tx_one(). */ ic->ic_headroom = hw->extra_tx_headroom; #endif ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ ic->ic_opmode = IEEE80211_M_STA; /* Set device capabilities. */ /* XXX-BZ we need to get these from linux80211/drivers and convert. */ ic->ic_caps = IEEE80211_C_STA | IEEE80211_C_MONITOR | IEEE80211_C_WPA | /* WPA/RSN */ #ifdef LKPI_80211_WME IEEE80211_C_WME | #endif #if 0 IEEE80211_C_PMGT | #endif IEEE80211_C_SHSLOT | /* short slot time supported */ IEEE80211_C_SHPREAMBLE /* short preamble supported */ ; #ifdef LKPI_80211_BGSCAN if (lhw->ops->hw_scan) ic->ic_caps |= IEEE80211_C_BGSCAN; #endif lkpi_enable_hw_scan(lhw); /* Does HW support Fragmentation offload? */ if (ieee80211_hw_check(hw, SUPPORTS_TX_FRAG)) ic->ic_flags_ext |= IEEE80211_FEXT_FRAG_OFFLOAD; /* Does HW support full AMPDU[-TX] offload? */ if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) ic->ic_flags_ext |= IEEE80211_FEXT_AMPDU_OFFLOAD; #ifdef __notyet__ if (ieee80211_hw_check(hw, TX_AMSDU)) if (ieee80211_hw_check(hw, SUPPORTS_AMSDU_IN_AMPDU)) #endif /* * The wiphy variables report bitmasks of avail antennas. * (*get_antenna) get the current bitmask sets which can be * altered by (*set_antenna) for some drivers. * XXX-BZ will the count alone do us much good long-term in net80211? */ if (hw->wiphy->available_antennas_rx || hw->wiphy->available_antennas_tx) { uint32_t rxs, txs; if (lkpi_80211_mo_get_antenna(hw, &txs, &rxs) == 0) { ic->ic_rxstream = bitcount32(rxs); ic->ic_txstream = bitcount32(txs); } } ic->ic_cryptocaps = 0; #ifdef LKPI_80211_HW_CRYPTO if (lkpi_hwcrypto && hw->wiphy->n_cipher_suites > 0) { uint32_t hwciphers; hwciphers = 0; for (i = 0; i < hw->wiphy->n_cipher_suites; i++) { uint32_t cs; cs = lkpi_l80211_to_net80211_cyphers( ic, hw->wiphy->cipher_suites[i]); if (cs == IEEE80211_CRYPTO_TKIP) { /* * We do set this here. We will only find out * when doing a SET_KEY operation depending on * what the driver returns. * net80211::ieee80211_crypto_newkey() * checks this so we will have to do flags * surgery later. */ cs |= IEEE80211_CRYPTO_TKIPMIC; } hwciphers |= cs; } /* * (20250415) nothing anywhere in the path checks we actually * support all these in net80211. * net80211 supports _256 variants but the ioctl does not. */ IMPROVE("as net80211 grows more support, enable them"); hwciphers &= (IEEE80211_CRYPTO_WEP | IEEE80211_CRYPTO_TKIP | IEEE80211_CRYPTO_TKIPMIC | IEEE80211_CRYPTO_AES_CCM | IEEE80211_CRYPTO_AES_GCM_128); /* * We only support CCMP here, so further filter. * Also permit TKIP if turned on. */ hwciphers &= (IEEE80211_CRYPTO_AES_CCM | IEEE80211_CRYPTO_AES_GCM_128 | (lkpi_hwcrypto_tkip ? (IEEE80211_CRYPTO_TKIP | IEEE80211_CRYPTO_TKIPMIC) : 0)); ieee80211_set_hardware_ciphers(ic, hwciphers); } #endif lkpi_ic_getradiocaps(ic, IEEE80211_CHAN_MAX, &ic->ic_nchans, ic->ic_channels); ieee80211_ifattach(ic); ic->ic_update_mcast = lkpi_ic_update_mcast; ic->ic_update_promisc = lkpi_ic_update_promisc; ic->ic_update_chw = lkpi_ic_update_chw; ic->ic_parent = lkpi_ic_parent; ic->ic_scan_start = lkpi_ic_scan_start; ic->ic_scan_end = lkpi_ic_scan_end; ic->ic_set_channel = lkpi_ic_set_channel; ic->ic_transmit = lkpi_ic_transmit; ic->ic_raw_xmit = lkpi_ic_raw_xmit; ic->ic_vap_create = lkpi_ic_vap_create; ic->ic_vap_delete = lkpi_ic_vap_delete; ic->ic_getradiocaps = lkpi_ic_getradiocaps; ic->ic_wme.wme_update = lkpi_ic_wme_update; lhw->ic_scan_curchan = ic->ic_scan_curchan; ic->ic_scan_curchan = lkpi_ic_scan_curchan; lhw->ic_scan_mindwell = ic->ic_scan_mindwell; ic->ic_scan_mindwell = lkpi_ic_scan_mindwell; lhw->ic_node_alloc = ic->ic_node_alloc; ic->ic_node_alloc = lkpi_ic_node_alloc; lhw->ic_node_init = ic->ic_node_init; ic->ic_node_init = lkpi_ic_node_init; lhw->ic_node_cleanup = ic->ic_node_cleanup; ic->ic_node_cleanup = lkpi_ic_node_cleanup; lhw->ic_node_free = ic->ic_node_free; ic->ic_node_free = lkpi_ic_node_free; #ifdef LKPI_80211_HT /* * Only attach if the driver/firmware supports (*ampdu_action)(). * Otherwise it is in the hands of net80211. */ if (lhw->ops->ampdu_action != NULL) { lhw->ic_recv_action = ic->ic_recv_action; ic->ic_recv_action = lkpi_ic_recv_action; lhw->ic_send_action = ic->ic_send_action; ic->ic_send_action = lkpi_ic_send_action; lhw->ic_ampdu_enable = ic->ic_ampdu_enable; ic->ic_ampdu_enable = lkpi_ic_ampdu_enable; lhw->ic_addba_request = ic->ic_addba_request; ic->ic_addba_request = lkpi_ic_addba_request; lhw->ic_addba_response = ic->ic_addba_response; ic->ic_addba_response = lkpi_ic_addba_response; lhw->ic_addba_stop = ic->ic_addba_stop; ic->ic_addba_stop = lkpi_ic_addba_stop; lhw->ic_addba_response_timeout = ic->ic_addba_response_timeout; ic->ic_addba_response_timeout = lkpi_ic_addba_response_timeout; lhw->ic_bar_response = ic->ic_bar_response; ic->ic_bar_response = lkpi_ic_bar_response; lhw->ic_ampdu_rx_start = ic->ic_ampdu_rx_start; ic->ic_ampdu_rx_start = lkpi_ic_ampdu_rx_start; lhw->ic_ampdu_rx_stop = ic->ic_ampdu_rx_stop; ic->ic_ampdu_rx_stop = lkpi_ic_ampdu_rx_stop; } #endif lkpi_radiotap_attach(lhw); /* * Assign the first possible channel for now; seems Realtek drivers * expect one. * Also remember the amount of bands we support and the most rates * in any band so we can scale [(ext) sup rates] IE(s) accordingly. */ lhw->supbands = lhw->max_rates = 0; for (band = 0; band < NUM_NL80211_BANDS; band++) { struct ieee80211_supported_band *supband; struct linuxkpi_ieee80211_channel *channels; supband = hw->wiphy->bands[band]; if (supband == NULL || supband->n_channels == 0) continue; lhw->supbands++; lhw->max_rates = max(lhw->max_rates, supband->n_bitrates); /* If we have a channel, we need to keep counting supbands. */ if (hw->conf.chandef.chan != NULL) continue; channels = supband->channels; for (i = 0; i < supband->n_channels; i++) { if (channels[i].flags & IEEE80211_CHAN_DISABLED) continue; cfg80211_chandef_create(&hw->conf.chandef, &channels[i], #ifdef LKPI_80211_HT (ic->ic_flags_ht & IEEE80211_FHT_HT) ? NL80211_CHAN_HT20 : #endif NL80211_CHAN_NO_HT); lhw->dflt_chandef = hw->conf.chandef; #ifdef LINUXKPI_DEBUG_80211 if ((linuxkpi_debug_80211 & D80211_CHANDEF) != 0) ic_printf(ic, "%s:%d: initialized " "hw->conf.chandef and dflt_chandef to %p\n", __func__, __LINE__, &lhw->dflt_chandef); #endif break; } } IMPROVE("see net80211::ieee80211_chan_init vs. wiphy->bands[].bitrates possibly in lkpi_ic_getradiocaps?"); /* Make sure we do not support more than net80211 is willing to take. */ if (lhw->max_rates > IEEE80211_RATE_MAXSIZE) { ic_printf(ic, "%s: limiting max_rates %d to %d!\n", __func__, lhw->max_rates, IEEE80211_RATE_MAXSIZE); lhw->max_rates = IEEE80211_RATE_MAXSIZE; } /* * The maximum supported bitrates on any band + size for * DSSS Parameter Set give our per-band IE size. * SSID is the responsibility of the driver and goes on the side. * The user specified bits coming from the vap go into the * "common ies" fields. */ lhw->scan_ie_len = 2 + IEEE80211_RATE_SIZE; if (lhw->max_rates > IEEE80211_RATE_SIZE) lhw->scan_ie_len += 2 + (lhw->max_rates - IEEE80211_RATE_SIZE); if (hw->wiphy->features & NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) { /* * net80211 does not seem to support the DSSS Parameter Set but * some of the drivers insert it so calculate the extra fixed * space in. */ lhw->scan_ie_len += 2 + 1; } #if defined(LKPI_80211_HT) if ((ic->ic_htcaps & IEEE80211_HTC_HT) != 0) lhw->scan_ie_len += sizeof(struct ieee80211_ie_htcap); #endif #if defined(LKPI_80211_VHT) if (IEEE80211_CONF_VHT(ic)) lhw->scan_ie_len += 2 + sizeof(struct ieee80211_vht_cap); #endif /* Reduce the max_scan_ie_len "left" by the amount we consume already. */ if (hw->wiphy->max_scan_ie_len > 0) { if (lhw->scan_ie_len > hw->wiphy->max_scan_ie_len) goto err; hw->wiphy->max_scan_ie_len -= lhw->scan_ie_len; } if (bootverbose) { if (hw->netdev_features != 0) ic_printf(ic, "netdev_features %b\n", hw->netdev_features, NETIF_F_BITS); ieee80211_announce(ic); } return (0); err: IMPROVE("TODO FIXME CLEANUP"); return (-EAGAIN); } void linuxkpi_ieee80211_ifdetach(struct ieee80211_hw *hw) { struct lkpi_hw *lhw; struct ieee80211com *ic; lhw = HW_TO_LHW(hw); ic = lhw->ic; ieee80211_ifdetach(ic); } void linuxkpi_ieee80211_iterate_interfaces(struct ieee80211_hw *hw, enum ieee80211_iface_iter flags, void(*iterfunc)(void *, uint8_t *, struct ieee80211_vif *), void *arg) { struct lkpi_hw *lhw; struct lkpi_vif *lvif; struct ieee80211_vif *vif; bool active, atomic, nin_drv; lhw = HW_TO_LHW(hw); if (flags & ~(IEEE80211_IFACE_ITER_NORMAL| IEEE80211_IFACE_ITER_RESUME_ALL| IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER| IEEE80211_IFACE_ITER_ACTIVE|IEEE80211_IFACE_ITER__ATOMIC| IEEE80211_IFACE_ITER__MTX)) { ic_printf(lhw->ic, "XXX TODO %s flags(%#x) not yet supported.\n", __func__, flags); } if ((flags & IEEE80211_IFACE_ITER__MTX) != 0) lockdep_assert_wiphy(hw->wiphy); active = (flags & IEEE80211_IFACE_ITER_ACTIVE) != 0; atomic = (flags & IEEE80211_IFACE_ITER__ATOMIC) != 0; nin_drv = (flags & IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER) != 0; if (atomic) { IMPROVE("LKPI_80211_LHW_LVIF_LOCK atomic assume to be rcu?"); LKPI_80211_LHW_LVIF_LOCK(lhw); } TAILQ_FOREACH(lvif, &lhw->lvif_head, lvif_entry) { struct ieee80211vap *vap; vif = LVIF_TO_VIF(lvif); /* * If we want "active" interfaces, we need to distinguish on * whether the driver knows about them or not to be able to * handle the "resume" case correctly. Skip the ones the * driver does not know about. */ if (active && !lvif->added_to_drv && (flags & IEEE80211_IFACE_ITER_RESUME_ALL) != 0) continue; /* * If we shall skip interfaces not added to the driver do so * if we haven't yet. */ if (nin_drv && !lvif->added_to_drv) continue; /* * Run the iterator function if we are either not asking * asking for active only or if the VAP is "running". */ /* XXX-BZ probably should have state in the lvif as well. */ vap = LVIF_TO_VAP(lvif); if (!active || (vap->iv_state != IEEE80211_S_INIT)) iterfunc(arg, vif->addr, vif); } if (atomic) LKPI_80211_LHW_LVIF_UNLOCK(lhw); } static void lkpi_ieee80211_iterate_keys(struct ieee80211_hw *hw, struct ieee80211_vif *vif, ieee80211_keyix keyix, struct lkpi_sta *lsta, void(*iterfunc)(struct ieee80211_hw *, struct ieee80211_vif *, struct ieee80211_sta *, struct ieee80211_key_conf *, void *), void *arg) { #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO) net80211_vap_printf(LVIF_TO_VAP(VIF_TO_LVIF(vif)), "%s:%d: lsta %6D added_to_drv %d kc[keyix %u] %p\n", __func__, __LINE__, LSTA_TO_STA(lsta)->addr, ":", lsta->added_to_drv, keyix, lsta->kc[keyix]); #endif if (!lsta->added_to_drv) return; if (lsta->kc[keyix] == NULL) return; iterfunc(hw, vif, LSTA_TO_STA(lsta), lsta->kc[keyix], arg); } void linuxkpi_ieee80211_iterate_keys(struct ieee80211_hw *hw, struct ieee80211_vif *vif, void(*iterfunc)(struct ieee80211_hw *, struct ieee80211_vif *, struct ieee80211_sta *, struct ieee80211_key_conf *, void *), void *arg, bool rcu) { struct lkpi_sta *lsta; struct lkpi_vif *lvif; lvif = VIF_TO_LVIF(vif); if (rcu) { rcu_read_lock_held(); /* XXX-BZ is this correct? */ if (vif == NULL) { TODO(); } else { list_for_each_entry_rcu(lsta, &lvif->lsta_list, lsta_list) { for (ieee80211_keyix keyix = 0; keyix < nitems(lsta->kc); keyix++) lkpi_ieee80211_iterate_keys(hw, vif, keyix, lsta, iterfunc, arg); } } } else { TODO("Used by suspend/resume; order of keys as installed to " "firmware is important; we'll need to rewrite some code for that"); lockdep_assert_wiphy(hw->wiphy); if (vif == NULL) { TODO(); } else { list_for_each_entry(lsta, &lvif->lsta_list, lsta_list) { for (ieee80211_keyix keyix = 0; keyix < nitems(lsta->kc); keyix++) lkpi_ieee80211_iterate_keys(hw, vif, keyix, lsta, iterfunc, arg); } } } } void linuxkpi_ieee80211_iterate_chan_contexts(struct ieee80211_hw *hw, void(*iterfunc)(struct ieee80211_hw *, struct ieee80211_chanctx_conf *, void *), void *arg) { struct lkpi_hw *lhw; struct lkpi_chanctx *lchanctx; KASSERT(hw != NULL && iterfunc != NULL, ("%s: hw %p iterfunc %p arg %p\n", __func__, hw, iterfunc, arg)); lhw = HW_TO_LHW(hw); rcu_read_lock(); list_for_each_entry_rcu(lchanctx, &lhw->lchanctx_list, entry) { if (!lchanctx->added_to_drv) continue; iterfunc(hw, &lchanctx->chanctx_conf, arg); } rcu_read_unlock(); } void linuxkpi_ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw, void (*iterfunc)(void *, struct ieee80211_sta *), void *arg) { struct lkpi_hw *lhw; struct lkpi_vif *lvif; struct lkpi_sta *lsta; struct ieee80211_sta *sta; KASSERT(hw != NULL && iterfunc != NULL, ("%s: hw %p iterfunc %p arg %p\n", __func__, hw, iterfunc, arg)); lhw = HW_TO_LHW(hw); LKPI_80211_LHW_LVIF_LOCK(lhw); TAILQ_FOREACH(lvif, &lhw->lvif_head, lvif_entry) { rcu_read_lock(); list_for_each_entry_rcu(lsta, &lvif->lsta_list, lsta_list) { if (!lsta->added_to_drv) continue; sta = LSTA_TO_STA(lsta); iterfunc(arg, sta); } rcu_read_unlock(); } LKPI_80211_LHW_LVIF_UNLOCK(lhw); } struct linuxkpi_ieee80211_regdomain * lkpi_get_linuxkpi_ieee80211_regdomain(size_t n) { struct linuxkpi_ieee80211_regdomain *regd; regd = kzalloc(sizeof(*regd) + n * sizeof(struct ieee80211_reg_rule), GFP_KERNEL); return (regd); } int linuxkpi_regulatory_set_wiphy_regd_sync(struct wiphy *wiphy, struct linuxkpi_ieee80211_regdomain *regd) { struct lkpi_hw *lhw; struct ieee80211com *ic; struct ieee80211_regdomain *rd; lhw = wiphy_priv(wiphy); ic = lhw->ic; rd = &ic->ic_regdomain; if (rd->isocc[0] == '\0') { rd->isocc[0] = regd->alpha2[0]; rd->isocc[1] = regd->alpha2[1]; } TODO(); /* XXX-BZ finish the rest. */ return (0); } void linuxkpi_ieee80211_scan_completed(struct ieee80211_hw *hw, struct cfg80211_scan_info *info) { struct lkpi_hw *lhw; struct ieee80211com *ic; struct ieee80211_scan_state *ss; lhw = wiphy_priv(hw->wiphy); ic = lhw->ic; ss = ic->ic_scan; TRACE_SCAN(ic, "scan_flags %b info { %ju, %6D, aborted %d }", lhw->scan_flags, LKPI_LHW_SCAN_BITS, (uintmax_t)info->scan_start_tsf, info->tsf_bssid, ":", info->aborted); ieee80211_scan_done(ss->ss_vap); LKPI_80211_LHW_SCAN_LOCK(lhw); free(lhw->hw_req, M_LKPI80211); lhw->hw_req = NULL; lhw->scan_flags &= ~LKPI_LHW_SCAN_RUNNING; /* The wakeup(lhw) will be called from lkpi_ic_scan_end(). */ /* wakeup(lhw); */ LKPI_80211_LHW_SCAN_UNLOCK(lhw); return; } static void lkpi_80211_lhw_rxq_rx_one(struct lkpi_hw *lhw, struct mbuf *m) { struct ieee80211_node *ni; #ifdef LKPI_80211_USE_MTAG struct m_tag *mtag; #endif int ok; ni = NULL; #ifdef LKPI_80211_USE_MTAG mtag = m_tag_locate(m, MTAG_ABI_LKPI80211, LKPI80211_TAG_RXNI, NULL); if (mtag != NULL) { struct lkpi_80211_tag_rxni *rxni; rxni = (struct lkpi_80211_tag_rxni *)(mtag + 1); ni = rxni->ni; } #else if (m->m_pkthdr.PH_loc.ptr != NULL) { ni = m->m_pkthdr.PH_loc.ptr; m->m_pkthdr.PH_loc.ptr = NULL; } #endif if (ni != NULL) { ok = ieee80211_input_mimo(ni, m); ieee80211_free_node(ni); /* Release the reference. */ if (ok < 0) m_freem(m); } else { ok = ieee80211_input_mimo_all(lhw->ic, m); /* mbuf got consumed. */ } #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE_RX) printf("TRACE-RX: %s: handled frame type %#0x\n", __func__, ok); #endif } static void lkpi_80211_lhw_rxq_task(void *ctx, int pending) { struct lkpi_hw *lhw; struct mbufq mq; struct mbuf *m; lhw = ctx; #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE_RX) printf("TRACE-RX: %s: lhw %p pending %d mbuf_qlen %d\n", __func__, lhw, pending, mbufq_len(&lhw->rxq)); #endif mbufq_init(&mq, IFQ_MAXLEN); LKPI_80211_LHW_RXQ_LOCK(lhw); mbufq_concat(&mq, &lhw->rxq); LKPI_80211_LHW_RXQ_UNLOCK(lhw); m = mbufq_dequeue(&mq); while (m != NULL) { lkpi_80211_lhw_rxq_rx_one(lhw, m); m = mbufq_dequeue(&mq); } } static void lkpi_convert_rx_status(struct ieee80211_hw *hw, struct lkpi_sta *lsta, struct ieee80211_rx_status *rx_status, struct ieee80211_rx_stats *rx_stats, uint8_t *rssip) { struct ieee80211_supported_band *supband; struct rate_info rxrate; int i; uint8_t rssi; memset(&rxrate, 0, sizeof(rxrate)); memset(rx_stats, 0, sizeof(*rx_stats)); rx_stats->r_flags = IEEE80211_R_NF | IEEE80211_R_RSSI; /* XXX-BZ correct hardcoded noise floor, survey data? */ rx_stats->c_nf = -96; if (ieee80211_hw_check(hw, SIGNAL_DBM) && !(rx_status->flag & RX_FLAG_NO_SIGNAL_VAL)) rssi = rx_status->signal; else rssi = rx_stats->c_nf; /* * net80211 signal strength data are in .5 dBm units relative to * the current noise floor (see comment in ieee80211_node.h). */ rssi -= rx_stats->c_nf; if (rssip != NULL) *rssip = rssi; rx_stats->c_rssi = rssi * 2; rx_stats->r_flags |= IEEE80211_R_BAND; rx_stats->c_band = lkpi_nl80211_band_to_net80211_band(rx_status->band); rx_stats->r_flags |= IEEE80211_R_FREQ | IEEE80211_R_IEEE; rx_stats->c_freq = rx_status->freq; rx_stats->c_ieee = ieee80211_mhz2ieee(rx_stats->c_freq, rx_stats->c_band); rx_stats->c_rx_tsf = rx_status->mactime; /* XXX RX_FLAG_MACTIME_IS_RTAP_TS64 ? */ if ((rx_status->flag & RX_FLAG_MACTIME) == (RX_FLAG_MACTIME_START|RX_FLAG_MACTIME_END)) { rx_stats->r_flags |= IEEE80211_R_TSF64; /* XXX RX_FLAG_MACTIME_PLCP_START ? */ if ((rx_status->flag & RX_FLAG_MACTIME) == RX_FLAG_MACTIME_START) rx_stats->r_flags |= IEEE80211_R_TSF_START; if ((rx_status->flag & RX_FLAG_MACTIME) == RX_FLAG_MACTIME_END) rx_stats->r_flags |= IEEE80211_R_TSF_END; /* XXX-BZ if TSF_END will net80211 do the unwind of time? */ } if (rx_status->chains != 0) { int cc; int8_t crssi; rx_stats->c_chain = rx_status->chains; rx_stats->r_flags |= IEEE80211_R_C_CHAIN; cc = 0; for (i = 0; i < nitems(rx_status->chain_signal); i++) { if (!(rx_status->chains & BIT(i))) continue; crssi = rx_status->chain_signal[i]; crssi -= rx_stats->c_nf; rx_stats->c_rssi_ctl[i] = crssi * 2; rx_stats->c_rssi_ext[i] = crssi * 2; /* XXX _ext ??? ATH thing? */ /* We currently only have the global noise floor value. */ rx_stats->c_nf_ctl[i] = rx_stats->c_nf; rx_stats->c_nf_ext[i] = rx_stats->c_nf; cc++; } if (cc > 0) rx_stats->r_flags |= (IEEE80211_R_C_NF | IEEE80211_R_C_RSSI); } /* XXX-NET80211 We are not going to populate c_phytype! */ switch (rx_status->encoding) { case RX_ENC_LEGACY: { uint32_t legacy = 0; supband = hw->wiphy->bands[rx_status->band]; if (supband != NULL) legacy = supband->bitrates[rx_status->rate_idx].bitrate; rx_stats->c_rate = legacy; rxrate.legacy = legacy; /* Is there a LinuxKPI way of reporting IEEE80211_RX_F_CCK / _OFDM? */ break; } case RX_ENC_HT: rx_stats->c_pktflags |= IEEE80211_RX_F_HT; rx_stats->c_rate = rx_status->rate_idx; /* mcs */ rxrate.flags |= RATE_INFO_FLAGS_MCS; rxrate.mcs = rx_status->rate_idx; if ((rx_status->enc_flags & RX_ENC_FLAG_SHORT_GI) != 0) { rx_stats->c_pktflags |= IEEE80211_RX_F_SHORTGI; rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI; } break; case RX_ENC_VHT: rx_stats->c_pktflags |= IEEE80211_RX_F_VHT; rx_stats->c_rate = rx_status->rate_idx; /* mcs */ rx_stats->c_vhtnss = rx_status->nss; rxrate.flags |= RATE_INFO_FLAGS_VHT_MCS; rxrate.mcs = rx_status->rate_idx; rxrate.nss = rx_status->nss; if ((rx_status->enc_flags & RX_ENC_FLAG_SHORT_GI) != 0) { rx_stats->c_pktflags |= IEEE80211_RX_F_SHORTGI; rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI; } break; case RX_ENC_HE: rxrate.flags |= RATE_INFO_FLAGS_HE_MCS; rxrate.mcs = rx_status->rate_idx; rxrate.nss = rx_status->nss; /* XXX TODO */ TODO("net80211 has not matching encoding for %u", rx_status->encoding); break; case RX_ENC_EHT: rxrate.flags |= RATE_INFO_FLAGS_EHT_MCS; rxrate.mcs = rx_status->rate_idx; rxrate.nss = rx_status->nss; /* XXX TODO */ TODO("net80211 has not matching encoding for %u", rx_status->encoding); break; } rxrate.bw = rx_status->bw; switch (rx_status->bw) { case RATE_INFO_BW_20: rx_stats->c_width = IEEE80211_RX_FW_20MHZ; break; case RATE_INFO_BW_40: rx_stats->c_width = IEEE80211_RX_FW_40MHZ; break; case RATE_INFO_BW_80: rx_stats->c_width = IEEE80211_RX_FW_80MHZ; break; case RATE_INFO_BW_160: rx_stats->c_width = IEEE80211_RX_FW_160MHZ; break; case RATE_INFO_BW_320: case RATE_INFO_BW_HE_RU: case RATE_INFO_BW_EHT_RU: case RATE_INFO_BW_5: case RATE_INFO_BW_10: TODO("net80211 has not matching bandwidth for %u", rx_status->bw); break; } if ((rx_status->enc_flags & RX_ENC_FLAG_LDPC) != 0) rx_stats->c_pktflags |= IEEE80211_RX_F_LDPC; if ((rx_status->enc_flags & RX_ENC_FLAG_STBC_MASK) != 0) rx_stats->c_pktflags |= IEEE80211_RX_F_STBC; /* * We only need these for LKPI_80211_HW_CRYPTO in theory but in * case the hardware does something we do not expect always leave * these enabled. Leaving this commant as documentation for the || 1. */ #if defined(LKPI_80211_HW_CRYPTO) || 1 if (rx_status->flag & RX_FLAG_DECRYPTED) { rx_stats->c_pktflags |= IEEE80211_RX_F_DECRYPTED; /* Only valid if decrypted is set. */ if (rx_status->flag & RX_FLAG_PN_VALIDATED) rx_stats->c_pktflags |= IEEE80211_RX_F_PN_VALIDATED; } if (rx_status->flag & RX_FLAG_IV_STRIPPED) rx_stats->c_pktflags |= IEEE80211_RX_F_IV_STRIP; if (rx_status->flag & RX_FLAG_ICV_STRIPPED) rx_stats->c_pktflags |= IEEE80211_RX_F_ICV_STRIP; if (rx_status->flag & RX_FLAG_MIC_STRIPPED) rx_stats->c_pktflags |= IEEE80211_RX_F_MIC_STRIP; if (rx_status->flag & RX_FLAG_MMIC_STRIPPED) rx_stats->c_pktflags |= IEEE80211_RX_F_MMIC_STRIP; if (rx_status->flag & RX_FLAG_MMIC_ERROR) rx_stats->c_pktflags |= IEEE80211_RX_F_FAIL_MMIC; if (rx_status->flag & RX_FLAG_FAILED_FCS_CRC) rx_stats->c_pktflags |= IEEE80211_RX_F_FAIL_FCSCRC; #endif /* Fill in some sinfo bits to fill gaps not reported byt the driver. */ if (lsta != NULL) { memcpy(&lsta->sinfo.rxrate, &rxrate, sizeof(rxrate)); lsta->sinfo.filled |= BIT_ULL(NL80211_STA_INFO_RX_BITRATE); if (rx_status->chains != 0) { lsta->sinfo.chains = rx_status->chains; memcpy(lsta->sinfo.chain_signal, rx_status->chain_signal, sizeof(lsta->sinfo.chain_signal)); lsta->sinfo.filled |= BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL); } } } #ifdef LINUXKPI_DEBUG_80211 static void lkpi_rx_log_beacon(struct mbuf *m, struct lkpi_hw *lhw, struct ieee80211_rx_status *rx_status) { struct ieee80211_mgmt *f; uint8_t *e; char ssid[IEEE80211_NWID_LEN * 4 + 1]; memset(ssid, '\0', sizeof(ssid)); f = mtod(m, struct ieee80211_mgmt *); e = f->u.beacon.variable; /* * Usually SSID is right after the fixed part and for debugging we will * be fine should we miss it if it is not. */ while ((e - (uint8_t *)f) < m->m_len) { if (*e == IEEE80211_ELEMID_SSID) break; e += (2 + *(e + 1)); } if (*e == IEEE80211_ELEMID_SSID) { int i, len; char *p; p = ssid; len = m->m_len - ((e + 2) - (uint8_t *)f); if (len > *(e + 1)) len = *(e + 1); e += 2; for (i = 0; i < len; i++) { /* Printable character? */ if (*e >= 0x20 && *e < 0x7f) { *p++ = *e++; } else { snprintf(p, 5, "%#04x", *e++); p += 4; } } *p = '\0'; } /* We print skb, skb->data, m as we are seeing 'ghost beacons'. */ TRACE_SCAN_BEACON(lhw->ic, "Beacon: scan_flags %b, band %s freq %u chan %-4d " "len %d { %#06x %#06x %6D %6D %6D %#06x %ju %u %#06x SSID '%s' }", lhw->scan_flags, LKPI_LHW_SCAN_BITS, lkpi_nl80211_band_name(rx_status->band), rx_status->freq, linuxkpi_ieee80211_frequency_to_channel(rx_status->freq, 0), m->m_pkthdr.len, f->frame_control, f->duration_id, f->da, ":", f->sa, ":", f->bssid, ":", f->seq_ctrl, (uintmax_t)le64_to_cpu(f->u.beacon.timestamp), le16_to_cpu(f->u.beacon.beacon_int), le16_to_cpu(f->u.beacon.capab_info), ssid); } #endif /* For %list see comment towards the end of the function. */ void linuxkpi_ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb, struct ieee80211_sta *sta, struct napi_struct *napi __unused, struct list_head *list __unused) { struct lkpi_hw *lhw; struct ieee80211com *ic; struct mbuf *m; struct skb_shared_info *shinfo; struct ieee80211_rx_status *rx_status; struct ieee80211_rx_stats rx_stats; struct ieee80211_node *ni; struct ieee80211vap *vap; struct ieee80211_hdr *hdr; struct lkpi_sta *lsta; int i, offset, ok, error; uint8_t rssi; bool is_beacon; lhw = HW_TO_LHW(hw); ic = lhw->ic; if (skb->len < 2) { /* Need 80211 stats here. */ counter_u64_add(ic->ic_ierrors, 1); IMPROVE(); goto err; } /* * For now do the data copy; we can later improve things. Might even * have an mbuf backing the skb data then? */ m = m_get3(skb->len, M_NOWAIT, MT_DATA, M_PKTHDR); if (m == NULL) { counter_u64_add(ic->ic_ierrors, 1); goto err; } m_copyback(m, 0, skb->tail - skb->data, skb->data); shinfo = skb_shinfo(skb); offset = m->m_len; for (i = 0; i < shinfo->nr_frags; i++) { m_copyback(m, offset, shinfo->frags[i].size, (uint8_t *)linux_page_address(shinfo->frags[i].page) + shinfo->frags[i].offset); offset += shinfo->frags[i].size; } rx_status = IEEE80211_SKB_RXCB(skb); hdr = (void *)skb->data; is_beacon = ieee80211_is_beacon(hdr->frame_control); #ifdef LINUXKPI_DEBUG_80211 /* * We use the mbuf here as otherwise the variable part might * be in skb frags. */ if (is_beacon && ((linuxkpi_debug_80211 & D80211_SCAN_BEACON) != 0)) lkpi_rx_log_beacon(m, lhw, rx_status); if (is_beacon && (linuxkpi_debug_80211 & D80211_TRACE_RX_BEACONS) == 0 && (linuxkpi_debug_80211 & D80211_SCAN_BEACON) == 0) goto no_trace_beacons; if (linuxkpi_debug_80211 & D80211_TRACE_RX) printf("TRACE-RX: %s: skb %p l/d/t-len (%u/%u/%u) " "h %p d %p t %p e %p sh %p (%u) m %p plen %u len %u%s\n", __func__, skb, skb->len, skb->data_len, skb->truesize, skb->head, skb->data, skb->tail, skb->end, shinfo, shinfo->nr_frags, m, m->m_pkthdr.len, m->m_len, is_beacon ? " beacon" : ""); if (linuxkpi_debug_80211 & D80211_TRACE_RX_DUMP) hexdump(mtod(m, const void *), m->m_len, "RX (raw) ", 0); /* Implement a dump_rxcb() !!! */ if ((linuxkpi_debug_80211 & D80211_TRACE_RX) != 0 || (linuxkpi_debug_80211 & D80211_SCAN_BEACON) != 0) printf("TRACE-RX: %s: RXCB: %ju %ju %u, %b, %u, %#0x, %#0x, " "%u band %u, %u { %d %d %d %d }, %d, %#x %#x %#x %#x %u %u %u\n", __func__, (uintmax_t)rx_status->boottime_ns, (uintmax_t)rx_status->mactime, rx_status->device_timestamp, rx_status->flag, IEEE80211_RX_STATUS_FLAGS_BITS, rx_status->freq, rx_status->bw, rx_status->encoding, rx_status->ampdu_reference, rx_status->band, rx_status->chains, rx_status->chain_signal[0], rx_status->chain_signal[1], rx_status->chain_signal[2], rx_status->chain_signal[3], rx_status->signal, rx_status->enc_flags, rx_status->he_dcm, rx_status->he_gi, rx_status->he_ru, rx_status->zero_length_psdu_type, rx_status->nss, rx_status->rate_idx); no_trace_beacons: #endif lsta = NULL; if (sta != NULL) { lsta = STA_TO_LSTA(sta); ni = ieee80211_ref_node(lsta->ni); } else { struct ieee80211_frame_min *wh; wh = mtod(m, struct ieee80211_frame_min *); ni = ieee80211_find_rxnode(ic, wh); if (ni != NULL) lsta = ni->ni_drv_data; } rssi = 0; lkpi_convert_rx_status(hw, lsta, rx_status, &rx_stats, &rssi); ok = ieee80211_add_rx_params(m, &rx_stats); if (ok == 0) { m_freem(m); counter_u64_add(ic->ic_ierrors, 1); goto err; } if (ni != NULL) vap = ni->ni_vap; else /* * XXX-BZ can we improve this by looking at the frame hdr * or other meta-data passed up? */ vap = TAILQ_FIRST(&ic->ic_vaps); #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE_RX) printf("TRACE-RX: %s: sta %p lsta %p state %d ni %p vap %p%s\n", __func__, sta, lsta, (lsta != NULL) ? lsta->state : -1, ni, vap, is_beacon ? " beacon" : ""); #endif if (ni != NULL && vap != NULL && is_beacon && rx_status->device_timestamp > 0 && m->m_pkthdr.len >= sizeof(struct ieee80211_frame)) { struct lkpi_vif *lvif; struct ieee80211_vif *vif; struct ieee80211_frame *wh; lvif = VAP_TO_LVIF(vap); vif = LVIF_TO_VIF(lvif); wh = mtod(m, struct ieee80211_frame *); if (!IEEE80211_ADDR_EQ(wh->i_addr2, vif->cfg.ap_addr)) goto skip_device_ts; IMPROVE("TIMING_BEACON_ONLY?"); /* mac80211 specific (not net80211) so keep it here. */ vif->bss_conf.sync_device_ts = rx_status->device_timestamp; /* * net80211 should take care of the other information (sync_tsf, * sync_dtim_count) as otherwise we need to parse the beacon. */ skip_device_ts: ; } if (vap != NULL && vap->iv_state > IEEE80211_S_INIT && ieee80211_radiotap_active_vap(vap)) { struct lkpi_radiotap_rx_hdr *rtap; rtap = &lhw->rtap_rx; rtap->wr_tsft = rx_status->device_timestamp; rtap->wr_flags = 0; if (rx_status->enc_flags & RX_ENC_FLAG_SHORTPRE) rtap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; if (rx_status->enc_flags & RX_ENC_FLAG_SHORT_GI) rtap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTGI; #if 0 /* .. or it does not given we strip it below. */ if (ieee80211_hw_check(hw, RX_INCLUDES_FCS)) rtap->wr_flags |= IEEE80211_RADIOTAP_F_FCS; #endif if (rx_status->flag & RX_FLAG_FAILED_FCS_CRC) rtap->wr_flags |= IEEE80211_RADIOTAP_F_BADFCS; rtap->wr_rate = 0; IMPROVE(); /* XXX TODO status->encoding / rate_index / bw */ rtap->wr_chan_freq = htole16(rx_stats.c_freq); if (ic->ic_curchan->ic_ieee == rx_stats.c_ieee) rtap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); rtap->wr_dbm_antsignal = rssi; rtap->wr_dbm_antnoise = rx_stats.c_nf; } if (ieee80211_hw_check(hw, RX_INCLUDES_FCS)) m_adj(m, -IEEE80211_CRC_LEN); #if 0 if (list != NULL) { /* * Normally this would be queued up and delivered by * netif_receive_skb_list(), napi_gro_receive(), or the like. * See mt76::mac80211.c as only current possible consumer. */ IMPROVE("we simply pass the packet to net80211 to deal with."); } #endif /* Attach meta-information to the mbuf for the deferred RX path. */ if (ni != NULL) { #ifdef LKPI_80211_USE_MTAG struct m_tag *mtag; struct lkpi_80211_tag_rxni *rxni; mtag = m_tag_alloc(MTAG_ABI_LKPI80211, LKPI80211_TAG_RXNI, sizeof(*rxni), IEEE80211_M_NOWAIT); if (mtag == NULL) { m_freem(m); counter_u64_add(ic->ic_ierrors, 1); goto err; } rxni = (struct lkpi_80211_tag_rxni *)(mtag + 1); rxni->ni = ni; /* We hold a reference. */ m_tag_prepend(m, mtag); #else m->m_pkthdr.PH_loc.ptr = ni; /* We hold a reference. */ #endif } LKPI_80211_LHW_RXQ_LOCK(lhw); if (lhw->rxq_stopped) { LKPI_80211_LHW_RXQ_UNLOCK(lhw); m_freem(m); counter_u64_add(ic->ic_ierrors, 1); goto err; } error = mbufq_enqueue(&lhw->rxq, m); if (error != 0) { LKPI_80211_LHW_RXQ_UNLOCK(lhw); m_freem(m); counter_u64_add(ic->ic_ierrors, 1); #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE_RX) ic_printf(ni->ni_ic, "%s: mbufq_enqueue failed: %d\n", __func__, error); #endif goto err; } taskqueue_enqueue(taskqueue_thread, &lhw->rxq_task); LKPI_80211_LHW_RXQ_UNLOCK(lhw); IMPROVE(); err: /* The skb is ours so we can free it :-) */ kfree_skb(skb); } uint8_t linuxkpi_ieee80211_get_tid(struct ieee80211_hdr *hdr, bool nonqos_ok) { const struct ieee80211_frame *wh; uint8_t tid; /* Linux seems to assume this is a QOS-Data-Frame */ KASSERT(nonqos_ok || ieee80211_is_data_qos(hdr->frame_control), ("%s: hdr %p fc %#06x not qos_data\n", __func__, hdr, hdr->frame_control)); wh = (const struct ieee80211_frame *)hdr; tid = ieee80211_gettid(wh); KASSERT(nonqos_ok || tid == (tid & IEEE80211_QOS_TID), ("%s: tid %u " "not expected (%u?)\n", __func__, tid, IEEE80211_NONQOS_TID)); return (tid); } /* -------------------------------------------------------------------------- */ static void lkpi_wiphy_work(struct work_struct *work) { struct lkpi_wiphy *lwiphy; struct wiphy *wiphy; struct wiphy_work *wk; lwiphy = container_of(work, struct lkpi_wiphy, wwk); wiphy = LWIPHY_TO_WIPHY(lwiphy); wiphy_lock(wiphy); LKPI_80211_LWIPHY_WORK_LOCK(lwiphy); wk = list_first_entry_or_null(&lwiphy->wwk_list, struct wiphy_work, entry); /* If there is nothing we do nothing. */ if (wk == NULL) { LKPI_80211_LWIPHY_WORK_UNLOCK(lwiphy); wiphy_unlock(wiphy); return; } list_del_init(&wk->entry); /* More work to do? */ if (!list_empty(&lwiphy->wwk_list)) schedule_work(work); LKPI_80211_LWIPHY_WORK_UNLOCK(lwiphy); /* Finally call the (*wiphy_work_fn)() function. */ wk->fn(wiphy, wk); wiphy_unlock(wiphy); } void linuxkpi_wiphy_work_queue(struct wiphy *wiphy, struct wiphy_work *wwk) { struct lkpi_wiphy *lwiphy; lwiphy = WIPHY_TO_LWIPHY(wiphy); LKPI_80211_LWIPHY_WORK_LOCK(lwiphy); /* Do not double-queue. */ if (list_empty(&wwk->entry)) list_add_tail(&wwk->entry, &lwiphy->wwk_list); LKPI_80211_LWIPHY_WORK_UNLOCK(lwiphy); /* * See how ieee80211_queue_work() work continues in Linux or if things * migrate here over time? * Use a system queue from linux/workqueue.h for now. */ queue_work(system_wq, &lwiphy->wwk); } void linuxkpi_wiphy_work_cancel(struct wiphy *wiphy, struct wiphy_work *wwk) { struct lkpi_wiphy *lwiphy; lwiphy = WIPHY_TO_LWIPHY(wiphy); LKPI_80211_LWIPHY_WORK_LOCK(lwiphy); /* Only cancel if queued. */ if (!list_empty(&wwk->entry)) list_del_init(&wwk->entry); LKPI_80211_LWIPHY_WORK_UNLOCK(lwiphy); } void linuxkpi_wiphy_work_flush(struct wiphy *wiphy, struct wiphy_work *wwk) { struct lkpi_wiphy *lwiphy; struct wiphy_work *wk; lwiphy = WIPHY_TO_LWIPHY(wiphy); LKPI_80211_LWIPHY_WORK_LOCK(lwiphy); /* If wwk is unset, flush everything; called when wiphy is shut down. */ if (wwk != NULL && list_empty(&wwk->entry)) { LKPI_80211_LWIPHY_WORK_UNLOCK(lwiphy); return; } while (!list_empty(&lwiphy->wwk_list)) { wk = list_first_entry(&lwiphy->wwk_list, struct wiphy_work, entry); list_del_init(&wk->entry); LKPI_80211_LWIPHY_WORK_UNLOCK(lwiphy); wk->fn(wiphy, wk); LKPI_80211_LWIPHY_WORK_LOCK(lwiphy); if (wk == wwk) break; } LKPI_80211_LWIPHY_WORK_UNLOCK(lwiphy); } void lkpi_wiphy_delayed_work_timer(struct timer_list *tl) { struct wiphy_delayed_work *wdwk; wdwk = timer_container_of(wdwk, tl, timer); wiphy_work_queue(wdwk->wiphy, &wdwk->work); } void linuxkpi_wiphy_delayed_work_queue(struct wiphy *wiphy, struct wiphy_delayed_work *wdwk, unsigned long delay) { if (delay == 0) { /* Run right away. */ del_timer(&wdwk->timer); wiphy_work_queue(wiphy, &wdwk->work); } else { wdwk->wiphy = wiphy; mod_timer(&wdwk->timer, jiffies + delay); } } void linuxkpi_wiphy_delayed_work_cancel(struct wiphy *wiphy, struct wiphy_delayed_work *wdwk) { del_timer_sync(&wdwk->timer); wiphy_work_cancel(wiphy, &wdwk->work); } void linuxkpi_wiphy_delayed_work_flush(struct wiphy *wiphy, struct wiphy_delayed_work *wdwk) { lockdep_assert_held(&wiphy->mtx); del_timer_sync(&wdwk->timer); wiphy_work_flush(wiphy, &wdwk->work); } /* -------------------------------------------------------------------------- */ struct wiphy * linuxkpi_wiphy_new(const struct cfg80211_ops *ops, size_t priv_len) { struct lkpi_wiphy *lwiphy; struct wiphy *wiphy; lwiphy = kzalloc(sizeof(*lwiphy) + priv_len, GFP_KERNEL); if (lwiphy == NULL) return (NULL); lwiphy->ops = ops; LKPI_80211_LWIPHY_WORK_LOCK_INIT(lwiphy); INIT_LIST_HEAD(&lwiphy->wwk_list); INIT_WORK(&lwiphy->wwk, lkpi_wiphy_work); wiphy = LWIPHY_TO_WIPHY(lwiphy); mutex_init(&wiphy->mtx); TODO(); return (wiphy); } void linuxkpi_wiphy_free(struct wiphy *wiphy) { struct lkpi_wiphy *lwiphy; if (wiphy == NULL) return; linuxkpi_wiphy_work_flush(wiphy, NULL); mutex_destroy(&wiphy->mtx); lwiphy = WIPHY_TO_LWIPHY(wiphy); LKPI_80211_LWIPHY_WORK_LOCK_DESTROY(lwiphy); kfree(lwiphy); } static void lkpi_wiphy_band_annotate(struct wiphy *wiphy) { int band; for (band = 0; band < NUM_NL80211_BANDS; band++) { struct ieee80211_supported_band *supband; int i; supband = wiphy->bands[band]; if (supband == NULL) continue; switch (band) { case NL80211_BAND_2GHZ: case NL80211_BAND_5GHZ: break; default: #ifdef LINUXKPI_DEBUG_80211 IMPROVE("band %d(%s) not yet supported", band, lkpi_nl80211_band_name(band)); /* For bands added here, also check lkpi_lsta_alloc(). */ #endif continue; } for (i = 0; i < supband->n_bitrates; i++) { switch (band) { case NL80211_BAND_2GHZ: switch (supband->bitrates[i].bitrate) { case 110: case 55: case 20: case 10: supband->bitrates[i].flags |= IEEE80211_RATE_MANDATORY_B; /* FALLTHROUGH */ /* 11g only */ case 240: case 120: case 60: supband->bitrates[i].flags |= IEEE80211_RATE_MANDATORY_G; break; } break; case NL80211_BAND_5GHZ: switch (supband->bitrates[i].bitrate) { case 240: case 120: case 60: supband->bitrates[i].flags |= IEEE80211_RATE_MANDATORY_A; break; } break; } } } } int linuxkpi_80211_wiphy_register(struct wiphy *wiphy) { TODO("Lots of checks and initialization"); lkpi_wiphy_band_annotate(wiphy); return (0); } static uint32_t lkpi_cfg80211_calculate_bitrate_ht(struct rate_info *rate) { TODO("cfg80211_calculate_bitrate_ht"); return (rate->legacy); } static uint32_t lkpi_cfg80211_calculate_bitrate_vht(struct rate_info *rate) { TODO("cfg80211_calculate_bitrate_vht"); return (rate->legacy); } uint32_t linuxkpi_cfg80211_calculate_bitrate(struct rate_info *rate) { /* Beware: order! */ if (rate->flags & RATE_INFO_FLAGS_MCS) return (lkpi_cfg80211_calculate_bitrate_ht(rate)); if (rate->flags & RATE_INFO_FLAGS_VHT_MCS) return (lkpi_cfg80211_calculate_bitrate_vht(rate)); IMPROVE("HE/EHT/..."); return (rate->legacy); } uint32_t linuxkpi_ieee80211_channel_to_frequency(uint32_t channel, enum nl80211_band band) { switch (band) { case NL80211_BAND_2GHZ: return (ieee80211_ieee2mhz(channel, IEEE80211_CHAN_2GHZ)); break; case NL80211_BAND_5GHZ: return (ieee80211_ieee2mhz(channel, IEEE80211_CHAN_5GHZ)); break; default: /* XXX abort, retry, error, panic? */ break; } return (0); } uint32_t linuxkpi_ieee80211_frequency_to_channel(uint32_t freq, uint32_t flags __unused) { return (ieee80211_mhz2ieee(freq, 0)); } #if 0 static struct lkpi_sta * lkpi_find_lsta_by_ni(struct lkpi_vif *lvif, struct ieee80211_node *ni) { struct lkpi_sta *lsta, *temp; rcu_read_lock(); list_for_each_entry_rcu(lsta, &lvif->lsta_list, lsta_list) { if (lsta->ni == ni) { rcu_read_unlock(); return (lsta); } } rcu_read_unlock(); return (NULL); } #endif struct ieee80211_sta * linuxkpi_ieee80211_find_sta(struct ieee80211_vif *vif, const u8 *peer) { struct lkpi_vif *lvif; struct lkpi_sta *lsta; struct ieee80211_sta *sta; lvif = VIF_TO_LVIF(vif); rcu_read_lock(); list_for_each_entry_rcu(lsta, &lvif->lsta_list, lsta_list) { sta = LSTA_TO_STA(lsta); if (IEEE80211_ADDR_EQ(sta->addr, peer)) { rcu_read_unlock(); return (sta); } } rcu_read_unlock(); return (NULL); } struct ieee80211_sta * linuxkpi_ieee80211_find_sta_by_ifaddr(struct ieee80211_hw *hw, const uint8_t *addr, const uint8_t *ourvifaddr) { struct lkpi_hw *lhw; struct lkpi_vif *lvif; struct lkpi_sta *lsta; struct ieee80211_vif *vif; struct ieee80211_sta *sta; lhw = wiphy_priv(hw->wiphy); sta = NULL; LKPI_80211_LHW_LVIF_LOCK(lhw); TAILQ_FOREACH(lvif, &lhw->lvif_head, lvif_entry) { /* XXX-BZ check our address from the vif. */ vif = LVIF_TO_VIF(lvif); if (ourvifaddr != NULL && !IEEE80211_ADDR_EQ(vif->addr, ourvifaddr)) continue; sta = linuxkpi_ieee80211_find_sta(vif, addr); if (sta != NULL) break; } LKPI_80211_LHW_LVIF_UNLOCK(lhw); if (sta != NULL) { lsta = STA_TO_LSTA(sta); if (!lsta->added_to_drv) return (NULL); } return (sta); } struct sk_buff * linuxkpi_ieee80211_tx_dequeue(struct ieee80211_hw *hw, struct ieee80211_txq *txq) { struct lkpi_txq *ltxq; struct lkpi_vif *lvif; struct sk_buff *skb; IMPROVE("wiphy_lock? or assert?"); skb = NULL; ltxq = TXQ_TO_LTXQ(txq); ltxq->seen_dequeue = true; if (ltxq->stopped) goto stopped; lvif = VIF_TO_LVIF(ltxq->txq.vif); if (lvif->hw_queue_stopped[ltxq->txq.ac]) { ltxq->stopped = true; goto stopped; } IMPROVE("hw(TX_FRAG_LIST)"); LKPI_80211_LTXQ_LOCK(ltxq); skb = skb_dequeue(<xq->skbq); if (skb != NULL) ltxq->frms_dequeued++; LKPI_80211_LTXQ_UNLOCK(ltxq); stopped: return (skb); } void linuxkpi_ieee80211_txq_get_depth(struct ieee80211_txq *txq, unsigned long *frame_cnt, unsigned long *byte_cnt) { struct lkpi_txq *ltxq; struct sk_buff *skb; unsigned long fc, bc; ltxq = TXQ_TO_LTXQ(txq); fc = bc = 0; LKPI_80211_LTXQ_LOCK(ltxq); skb_queue_walk(<xq->skbq, skb) { fc++; bc += skb->len; } LKPI_80211_LTXQ_UNLOCK(ltxq); if (frame_cnt) *frame_cnt = fc; if (byte_cnt) *byte_cnt = bc; /* Validate that this is doing the correct thing. */ /* Should we keep track on en/dequeue? */ IMPROVE(); } /* * We are called from ieee80211_free_txskb() or ieee80211_tx_status(). * The latter tries to derive the success status from the info flags * passed back from the driver. rawx_mit() saves the ni on the m and the * m on the skb for us to be able to give feedback to net80211. */ static void _lkpi_ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb, int status) { struct ieee80211_node *ni; struct mbuf *m; if (skb == NULL) return; m = skb->m; skb->m = NULL; if (m != NULL) { ni = m->m_pkthdr.PH_loc.ptr; /* Status: 0 is ok, != 0 is error. */ ieee80211_tx_complete(ni, m, status); /* ni & mbuf were consumed. */ } } void linuxkpi_ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb, int status) { _lkpi_ieee80211_free_txskb(hw, skb, status); kfree_skb(skb); } void linuxkpi_ieee80211_tx_status_ext(struct ieee80211_hw *hw, struct ieee80211_tx_status *txstat) { struct sk_buff *skb; struct ieee80211_tx_info *info, _info = { }; struct ieee80211_ratectl_tx_status txs; struct ieee80211_node *ni; int status; skb = txstat->skb; if (skb != NULL && skb->m != NULL) { struct mbuf *m; m = skb->m; ni = m->m_pkthdr.PH_loc.ptr; memset(&txs, 0, sizeof(txs)); } else { ni = NULL; } /* * If we have no info information on tx, set info to an all-zero struct * to make the code (and debug output) simpler. */ info = txstat->info; if (info == NULL) info = &_info; if (info->flags & IEEE80211_TX_STAT_ACK) { status = 0; /* No error. */ txs.status = IEEE80211_RATECTL_TX_SUCCESS; } else { status = 1; txs.status = IEEE80211_RATECTL_TX_FAIL_UNSPECIFIED; } if (ni != NULL) { txs.pktlen = skb->len; txs.flags |= IEEE80211_RATECTL_STATUS_PKTLEN; if (info->status.rates[0].count > 1) { txs.long_retries = info->status.rates[0].count - 1; /* 1 + retries in drivers. */ txs.flags |= IEEE80211_RATECTL_STATUS_LONG_RETRY; } #if 0 /* Unused in net80211 currently. */ /* XXX-BZ convert check .flags for MCS/VHT/.. */ txs.final_rate = info->status.rates[0].idx; txs.flags |= IEEE80211_RATECTL_STATUS_FINAL_RATE; #endif if (info->status.flags & IEEE80211_TX_STATUS_ACK_SIGNAL_VALID) { txs.rssi = info->status.ack_signal; /* XXX-BZ CONVERT? */ txs.flags |= IEEE80211_RATECTL_STATUS_RSSI; } IMPROVE("only update rate if needed but that requires us to get a proper rate from mo_sta_statistics"); ieee80211_ratectl_tx_complete(ni, &txs); ieee80211_ratectl_rate(ni->ni_vap->iv_bss, NULL, 0); #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE_TX) { printf("TX-RATE: %s: long_retries %d\n", __func__, txs.long_retries); } #endif } #ifdef LINUXKPI_DEBUG_80211 if (linuxkpi_debug_80211 & D80211_TRACE_TX) printf("TX-STATUS: %s: hw %p skb %p status %d : flags %#x " "band %u hw_queue %u tx_time_est %d : " "rates [ %u %u %#x, %u %u %#x, %u %u %#x, %u %u %#x ] " "ack_signal %u ampdu_ack_len %u ampdu_len %u antenna %u " "tx_time %u flags %#x " "status_driver_data [ %p %p ]\n", __func__, hw, skb, status, info->flags, info->band, info->hw_queue, info->tx_time_est, info->status.rates[0].idx, info->status.rates[0].count, info->status.rates[0].flags, info->status.rates[1].idx, info->status.rates[1].count, info->status.rates[1].flags, info->status.rates[2].idx, info->status.rates[2].count, info->status.rates[2].flags, info->status.rates[3].idx, info->status.rates[3].count, info->status.rates[3].flags, info->status.ack_signal, info->status.ampdu_ack_len, info->status.ampdu_len, info->status.antenna, info->status.tx_time, info->status.flags, info->status.status_driver_data[0], info->status.status_driver_data[1]); #endif if (txstat->free_list) { _lkpi_ieee80211_free_txskb(hw, skb, status); if (skb != NULL) list_add_tail(&skb->list, txstat->free_list); } else { linuxkpi_ieee80211_free_txskb(hw, skb, status); } } void linuxkpi_ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) { struct ieee80211_tx_status status; memset(&status, 0, sizeof(status)); status.info = IEEE80211_SKB_CB(skb); status.skb = skb; /* sta, n_rates, rates, free_list? */ ieee80211_tx_status_ext(hw, &status); } /* * This is an internal bandaid for the moment for the way we glue * skbs and mbufs together for TX. Once we have skbs backed by * mbufs this should go away. * This is a public function but kept on the private KPI (lkpi_) * and is not exposed by a header file. */ static void lkpi_ieee80211_free_skb_mbuf(void *p) { struct ieee80211_node *ni; struct mbuf *m; if (p == NULL) return; m = (struct mbuf *)p; M_ASSERTPKTHDR(m); ni = m->m_pkthdr.PH_loc.ptr; m->m_pkthdr.PH_loc.ptr = NULL; if (ni != NULL) ieee80211_free_node(ni); m_freem(m); } void linuxkpi_ieee80211_queue_delayed_work(struct ieee80211_hw *hw, struct delayed_work *w, int delay) { struct lkpi_hw *lhw; /* Need to make sure hw is in a stable (non-suspended) state. */ IMPROVE(); lhw = HW_TO_LHW(hw); queue_delayed_work(lhw->workq, w, delay); } void linuxkpi_ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *w) { struct lkpi_hw *lhw; /* Need to make sure hw is in a stable (non-suspended) state. */ IMPROVE(); lhw = HW_TO_LHW(hw); queue_work(lhw->workq, w); } struct sk_buff * linuxkpi_ieee80211_probereq_get(struct ieee80211_hw *hw, const uint8_t *addr, const uint8_t *ssid, size_t ssid_len, size_t tailroom) { struct sk_buff *skb; struct ieee80211_frame *wh; uint8_t *p; size_t len; len = sizeof(*wh); len += 2 + ssid_len; skb = dev_alloc_skb(hw->extra_tx_headroom + len + tailroom); if (skb == NULL) return (NULL); skb_reserve(skb, hw->extra_tx_headroom); wh = skb_put_zero(skb, sizeof(*wh)); wh->i_fc[0] = IEEE80211_FC0_VERSION_0; wh->i_fc[0] |= IEEE80211_FC0_SUBTYPE_PROBE_REQ | IEEE80211_FC0_TYPE_MGT; IEEE80211_ADDR_COPY(wh->i_addr1, ieee80211broadcastaddr); IEEE80211_ADDR_COPY(wh->i_addr2, addr); IEEE80211_ADDR_COPY(wh->i_addr3, ieee80211broadcastaddr); p = skb_put(skb, 2 + ssid_len); *p++ = IEEE80211_ELEMID_SSID; *p++ = ssid_len; if (ssid_len > 0) memcpy(p, ssid, ssid_len); return (skb); } struct sk_buff * linuxkpi_ieee80211_pspoll_get(struct ieee80211_hw *hw, struct ieee80211_vif *vif) { struct lkpi_vif *lvif; struct ieee80211vap *vap; struct sk_buff *skb; struct ieee80211_frame_pspoll *psp; uint16_t v; skb = dev_alloc_skb(hw->extra_tx_headroom + sizeof(*psp)); if (skb == NULL) return (NULL); skb_reserve(skb, hw->extra_tx_headroom); lvif = VIF_TO_LVIF(vif); vap = LVIF_TO_VAP(lvif); psp = skb_put_zero(skb, sizeof(*psp)); psp->i_fc[0] = IEEE80211_FC0_VERSION_0; psp->i_fc[0] |= IEEE80211_FC0_SUBTYPE_PS_POLL | IEEE80211_FC0_TYPE_CTL; v = htole16(vif->cfg.aid | 1<<15 | 1<<16); memcpy(&psp->i_aid, &v, sizeof(v)); IEEE80211_ADDR_COPY(psp->i_bssid, vap->iv_bss->ni_macaddr); IEEE80211_ADDR_COPY(psp->i_ta, vif->addr); return (skb); } struct sk_buff * linuxkpi_ieee80211_nullfunc_get(struct ieee80211_hw *hw, struct ieee80211_vif *vif, int linkid, bool qos) { struct sk_buff *skb; struct ieee80211_frame *nullf; IMPROVE("linkid"); skb = dev_alloc_skb(hw->extra_tx_headroom + sizeof(*nullf)); if (skb == NULL) return (NULL); skb_reserve(skb, hw->extra_tx_headroom); nullf = skb_put_zero(skb, sizeof(*nullf)); nullf->i_fc[0] = IEEE80211_FC0_VERSION_0; nullf->i_fc[0] |= IEEE80211_FC0_SUBTYPE_NODATA | IEEE80211_FC0_TYPE_DATA; nullf->i_fc[1] = IEEE80211_FC1_DIR_TODS; /* XXX-BZ if link is given, this is different. */ IEEE80211_ADDR_COPY(nullf->i_addr1, vif->cfg.ap_addr); IEEE80211_ADDR_COPY(nullf->i_addr2, vif->addr); IEEE80211_ADDR_COPY(nullf->i_addr3, vif->cfg.ap_addr); return (skb); } struct wireless_dev * linuxkpi_ieee80211_vif_to_wdev(struct ieee80211_vif *vif) { struct lkpi_vif *lvif; lvif = VIF_TO_LVIF(vif); return (&lvif->wdev); } void linuxkpi_ieee80211_connection_loss(struct ieee80211_vif *vif) { struct lkpi_vif *lvif; struct ieee80211vap *vap; enum ieee80211_state nstate; int arg; lvif = VIF_TO_LVIF(vif); vap = LVIF_TO_VAP(lvif); /* * Go to init; otherwise we need to elaborately check state and * handle accordingly, e.g., if in RUN we could call iv_bmiss. * Let the statemachine handle all neccessary changes. */ nstate = IEEE80211_S_INIT; arg = 0; /* Not a valid reason. */ ic_printf(vap->iv_ic, "%s: vif %p vap %p state %s (synched %d, assoc %d " "beacons %d dtim_period %d)\n", __func__, vif, vap, ieee80211_state_name[vap->iv_state], lvif->lvif_bss_synched, vif->cfg.assoc, lvif->beacons, vif->bss_conf.dtim_period); ieee80211_new_state(vap, nstate, arg); } void linuxkpi_ieee80211_beacon_loss(struct ieee80211_vif *vif) { struct lkpi_vif *lvif; struct ieee80211vap *vap; lvif = VIF_TO_LVIF(vif); vap = LVIF_TO_VAP(lvif); ic_printf(vap->iv_ic, "%s: vif %p vap %p state %s (synched %d, assoc %d " "beacons %d dtim_period %d)\n", __func__, vif, vap, ieee80211_state_name[vap->iv_state], lvif->lvif_bss_synched, vif->cfg.assoc, lvif->beacons, vif->bss_conf.dtim_period); ieee80211_beacon_miss(vap->iv_ic); } /* -------------------------------------------------------------------------- */ void linuxkpi_ieee80211_stop_queue(struct ieee80211_hw *hw, int qnum) { struct lkpi_hw *lhw; struct lkpi_vif *lvif; struct ieee80211_vif *vif; int ac_count, ac; KASSERT(qnum < hw->queues, ("%s: qnum %d >= hw->queues %d, hw %p\n", __func__, qnum, hw->queues, hw)); lhw = wiphy_priv(hw->wiphy); /* See lkpi_ic_vap_create(). */ if (hw->queues >= IEEE80211_NUM_ACS) ac_count = IEEE80211_NUM_ACS; else ac_count = 1; LKPI_80211_LHW_LVIF_LOCK(lhw); TAILQ_FOREACH(lvif, &lhw->lvif_head, lvif_entry) { vif = LVIF_TO_VIF(lvif); for (ac = 0; ac < ac_count; ac++) { IMPROVE_TXQ("LOCKING"); if (qnum == vif->hw_queue[ac]) { #ifdef LINUXKPI_DEBUG_80211 /* * For now log this to better understand * how this is supposed to work. */ if (lvif->hw_queue_stopped[ac] && (linuxkpi_debug_80211 & D80211_IMPROVE_TXQ) != 0) ic_printf(lhw->ic, "%s:%d: lhw %p hw %p " "lvif %p vif %p ac %d qnum %d already " "stopped\n", __func__, __LINE__, lhw, hw, lvif, vif, ac, qnum); #endif lvif->hw_queue_stopped[ac] = true; } } } LKPI_80211_LHW_LVIF_UNLOCK(lhw); } void linuxkpi_ieee80211_stop_queues(struct ieee80211_hw *hw) { int i; IMPROVE_TXQ("Locking; do we need further info?"); for (i = 0; i < hw->queues; i++) linuxkpi_ieee80211_stop_queue(hw, i); } static void lkpi_ieee80211_wake_queues(struct ieee80211_hw *hw, int hwq) { struct lkpi_hw *lhw; struct lkpi_vif *lvif; struct lkpi_sta *lsta; int ac_count, ac, tid; /* See lkpi_ic_vap_create(). */ if (hw->queues >= IEEE80211_NUM_ACS) ac_count = IEEE80211_NUM_ACS; else ac_count = 1; lhw = wiphy_priv(hw->wiphy); IMPROVE_TXQ("Locking"); LKPI_80211_LHW_LVIF_LOCK(lhw); TAILQ_FOREACH(lvif, &lhw->lvif_head, lvif_entry) { struct ieee80211_vif *vif; vif = LVIF_TO_VIF(lvif); for (ac = 0; ac < ac_count; ac++) { if (hwq == vif->hw_queue[ac]) { /* XXX-BZ what about software scan? */ #ifdef LINUXKPI_DEBUG_80211 /* * For now log this to better understand * how this is supposed to work. */ if (!lvif->hw_queue_stopped[ac] && (linuxkpi_debug_80211 & D80211_IMPROVE_TXQ) != 0) ic_printf(lhw->ic, "%s:%d: lhw %p hw %p " "lvif %p vif %p ac %d hw_q not stopped\n", __func__, __LINE__, lhw, hw, lvif, vif, ac); #endif lvif->hw_queue_stopped[ac] = false; rcu_read_lock(); list_for_each_entry_rcu(lsta, &lvif->lsta_list, lsta_list) { struct ieee80211_sta *sta; sta = LSTA_TO_STA(lsta); for (tid = 0; tid < nitems(sta->txq); tid++) { struct lkpi_txq *ltxq; if (sta->txq[tid] == NULL) continue; if (sta->txq[tid]->ac != ac) continue; ltxq = TXQ_TO_LTXQ(sta->txq[tid]); if (!ltxq->stopped) continue; ltxq->stopped = false; if (!skb_queue_empty(<xq->skbq)) lkpi_80211_mo_wake_tx_queue(hw, sta->txq[tid], false); } } rcu_read_unlock(); } } } LKPI_80211_LHW_LVIF_UNLOCK(lhw); } static void lkpi_ieee80211_wake_queues_locked(struct ieee80211_hw *hw) { int i; IMPROVE_TXQ("Is this all/enough here?"); for (i = 0; i < hw->queues; i++) lkpi_ieee80211_wake_queues(hw, i); } void linuxkpi_ieee80211_wake_queues(struct ieee80211_hw *hw) { struct lkpi_hw *lhw; unsigned long flags; lhw = HW_TO_LHW(hw); spin_lock_irqsave(&lhw->txq_lock, flags); lkpi_ieee80211_wake_queues_locked(hw); spin_unlock_irqrestore(&lhw->txq_lock, flags); } void linuxkpi_ieee80211_wake_queue(struct ieee80211_hw *hw, int qnum) { struct lkpi_hw *lhw; unsigned long flags; KASSERT(qnum < hw->queues, ("%s: qnum %d >= hw->queues %d, hw %p\n", __func__, qnum, hw->queues, hw)); lhw = HW_TO_LHW(hw); spin_lock_irqsave(&lhw->txq_lock, flags); lkpi_ieee80211_wake_queues(hw, qnum); spin_unlock_irqrestore(&lhw->txq_lock, flags); } void linuxkpi_ieee80211_handle_wake_tx_queue(struct ieee80211_hw *hw, struct ieee80211_txq *txq) { struct lkpi_hw *lhw; lhw = HW_TO_LHW(hw); LKPI_80211_LHW_TXQ_LOCK(lhw); ieee80211_txq_schedule_start(hw, txq->ac); do { struct lkpi_txq *ltxq; struct ieee80211_txq *ntxq; struct ieee80211_tx_control control; struct sk_buff *skb; ntxq = ieee80211_next_txq(hw, txq->ac); if (ntxq == NULL) break; ltxq = TXQ_TO_LTXQ(ntxq); memset(&control, 0, sizeof(control)); control.sta = ntxq->sta; do { skb = linuxkpi_ieee80211_tx_dequeue(hw, ntxq); if (skb == NULL) break; ltxq->frms_tx++; lkpi_80211_mo_tx(hw, &control, skb); } while(1); ieee80211_return_txq(hw, ntxq, false); } while (1); ieee80211_txq_schedule_end(hw, txq->ac); LKPI_80211_LHW_TXQ_UNLOCK(lhw); } /* -------------------------------------------------------------------------- */ /* This is just hardware queues. */ /* * Being called from the driver thus use _bh() locking. */ void linuxkpi_ieee80211_txq_schedule_start(struct ieee80211_hw *hw, uint8_t ac) { struct lkpi_hw *lhw; lhw = HW_TO_LHW(hw); if (ac >= IEEE80211_NUM_ACS) { ic_printf(lhw->ic, "%s: ac %u out of bounds.\n", __func__, ac); return; } spin_lock_bh(&lhw->txq_scheduled_lock[ac]); IMPROVE("check AIRTIME_FAIRNESS"); if (++lhw->txq_generation[ac] == 0) lhw->txq_generation[ac]++; spin_unlock_bh(&lhw->txq_scheduled_lock[ac]); } struct ieee80211_txq * linuxkpi_ieee80211_next_txq(struct ieee80211_hw *hw, uint8_t ac) { struct lkpi_hw *lhw; struct ieee80211_txq *txq; struct lkpi_txq *ltxq; lhw = HW_TO_LHW(hw); txq = NULL; if (ac >= IEEE80211_NUM_ACS) { ic_printf(lhw->ic, "%s: ac %u out of bounds.\n", __func__, ac); return (NULL); } spin_lock_bh(&lhw->txq_scheduled_lock[ac]); /* Check that we are scheduled. */ if (lhw->txq_generation[ac] == 0) goto out; ltxq = TAILQ_FIRST(&lhw->txq_scheduled[ac]); if (ltxq == NULL) goto out; if (ltxq->txq_generation == lhw->txq_generation[ac]) goto out; IMPROVE("check AIRTIME_FAIRNESS"); TAILQ_REMOVE(&lhw->txq_scheduled[ac], ltxq, txq_entry); ltxq->txq_generation = lhw->txq_generation[ac]; txq = <xq->txq; TAILQ_ELEM_INIT(ltxq, txq_entry); out: spin_unlock_bh(&lhw->txq_scheduled_lock[ac]); return (txq); } void linuxkpi_ieee80211_schedule_txq(struct ieee80211_hw *hw, struct ieee80211_txq *txq, bool withoutpkts) { struct lkpi_hw *lhw; struct lkpi_txq *ltxq; bool ltxq_empty; ltxq = TXQ_TO_LTXQ(txq); /* Only schedule if work to do or asked to anyway. */ LKPI_80211_LTXQ_LOCK(ltxq); ltxq_empty = skb_queue_empty(<xq->skbq); LKPI_80211_LTXQ_UNLOCK(ltxq); if (!withoutpkts && ltxq_empty) goto out; lhw = HW_TO_LHW(hw); spin_lock_bh(&lhw->txq_scheduled_lock[txq->ac]); /* * Make sure we do not double-schedule. We do this by checking tqe_prev, * the previous entry in our tailq. tqe_prev is always valid if this entry * is queued, tqe_next may be NULL if this is the only element in the list. */ if (ltxq->txq_entry.tqe_prev != NULL) goto unlock; TAILQ_INSERT_TAIL(&lhw->txq_scheduled[txq->ac], ltxq, txq_entry); unlock: spin_unlock_bh(&lhw->txq_scheduled_lock[txq->ac]); out: return; } /* -------------------------------------------------------------------------- */ struct lkpi_cfg80211_bss { u_int refcnt; struct cfg80211_bss bss; }; struct lkpi_cfg80211_get_bss_iter_lookup { struct wiphy *wiphy; struct linuxkpi_ieee80211_channel *chan; const uint8_t *bssid; const uint8_t *ssid; size_t ssid_len; enum ieee80211_bss_type bss_type; enum ieee80211_privacy privacy; /* * Something to store a copy of the result as the net80211 scan cache * is not refoucnted so a scan entry might go away any time. */ bool match; struct cfg80211_bss *bss; }; static void lkpi_cfg80211_get_bss_iterf(void *arg, const struct ieee80211_scan_entry *se) { struct lkpi_cfg80211_get_bss_iter_lookup *lookup; size_t ielen; lookup = arg; /* Do not try to find another match. */ if (lookup->match) return; /* Nothing to store result. */ if (lookup->bss == NULL) return; if (lookup->privacy != IEEE80211_PRIVACY_ANY) { /* if (se->se_capinfo & IEEE80211_CAPINFO_PRIVACY) */ /* We have no idea what to compare to as the drivers only request ANY */ return; } if (lookup->bss_type != IEEE80211_BSS_TYPE_ANY) { /* if (se->se_capinfo & (IEEE80211_CAPINFO_IBSS|IEEE80211_CAPINFO_ESS)) */ /* We have no idea what to compare to as the drivers only request ANY */ return; } if (lookup->chan != NULL) { struct linuxkpi_ieee80211_channel *chan; chan = linuxkpi_ieee80211_get_channel(lookup->wiphy, se->se_chan->ic_freq); if (chan == NULL || chan != lookup->chan) return; } if (lookup->bssid && !IEEE80211_ADDR_EQ(lookup->bssid, se->se_bssid)) return; if (lookup->ssid) { if (lookup->ssid_len != se->se_ssid[1] || se->se_ssid[1] == 0) return; if (memcmp(lookup->ssid, se->se_ssid+2, lookup->ssid_len) != 0) return; } ielen = se->se_ies.len; lookup->bss->ies = malloc(sizeof(*lookup->bss->ies) + ielen, M_LKPI80211, M_NOWAIT | M_ZERO); if (lookup->bss->ies == NULL) return; lookup->bss->ies->data = (uint8_t *)lookup->bss->ies + sizeof(*lookup->bss->ies); lookup->bss->ies->len = ielen; if (ielen) memcpy(lookup->bss->ies->data, se->se_ies.data, ielen); lookup->match = true; } struct cfg80211_bss * linuxkpi_cfg80211_get_bss(struct wiphy *wiphy, struct linuxkpi_ieee80211_channel *chan, const uint8_t *bssid, const uint8_t *ssid, size_t ssid_len, enum ieee80211_bss_type bss_type, enum ieee80211_privacy privacy) { struct lkpi_cfg80211_bss *lbss; struct lkpi_cfg80211_get_bss_iter_lookup lookup; struct lkpi_hw *lhw; struct ieee80211vap *vap; lhw = wiphy_priv(wiphy); /* Let's hope we can alloc. */ lbss = malloc(sizeof(*lbss), M_LKPI80211, M_NOWAIT | M_ZERO); if (lbss == NULL) { ic_printf(lhw->ic, "%s: alloc failed.\n", __func__); return (NULL); } lookup.wiphy = wiphy; lookup.chan = chan; lookup.bssid = bssid; lookup.ssid = ssid; lookup.ssid_len = ssid_len; lookup.bss_type = bss_type; lookup.privacy = privacy; lookup.match = false; lookup.bss = &lbss->bss; IMPROVE("Iterate over all VAPs comparing perm_addr and addresses?"); vap = TAILQ_FIRST(&lhw->ic->ic_vaps); ieee80211_scan_iterate(vap, lkpi_cfg80211_get_bss_iterf, &lookup); if (!lookup.match) { free(lbss, M_LKPI80211); return (NULL); } refcount_init(&lbss->refcnt, 1); return (&lbss->bss); } void linuxkpi_cfg80211_put_bss(struct wiphy *wiphy, struct cfg80211_bss *bss) { struct lkpi_cfg80211_bss *lbss; lbss = container_of(bss, struct lkpi_cfg80211_bss, bss); /* Free everything again on refcount ... */ if (refcount_release(&lbss->refcnt)) { free(lbss->bss.ies, M_LKPI80211); free(lbss, M_LKPI80211); } } void linuxkpi_cfg80211_bss_flush(struct wiphy *wiphy) { struct lkpi_hw *lhw; struct ieee80211com *ic; struct ieee80211vap *vap; lhw = wiphy_priv(wiphy); ic = lhw->ic; /* * If we haven't called ieee80211_ifattach() yet * or there is no VAP, there are no scans to flush. */ if (ic == NULL || (lhw->sc_flags & LKPI_MAC80211_DRV_STARTED) == 0) return; /* Should only happen on the current one? Not seen it late enough. */ IEEE80211_LOCK(ic); TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) ieee80211_scan_flush(vap); IEEE80211_UNLOCK(ic); } /* -------------------------------------------------------------------------- */ static bool cfg80211_chan_def_are_same(struct cfg80211_chan_def *cd1, struct cfg80211_chan_def *cd2) { if (cd1 == cd2) return (true); if (cd1 == NULL || cd2 == NULL) return (false); if (cd1->chan != cd2->chan) return (false); if (cd1->width != cd2->width) return (false); if (cd1->center_freq1 != cd2->center_freq1) return (false); if (cd1->center_freq2 != cd2->center_freq2) return (false); if (cd1->punctured != cd2->punctured) return (false); return (true); } /* * hw->conf get initialized/set in various places for us: * - linuxkpi_ieee80211_alloc_hw(): flags * - linuxkpi_ieee80211_ifattach(): chandef * - lkpi_ic_vap_create(): listen_interval * - lkpi_ic_set_channel(): chandef, flags */ static int lkpi_80211_update_chandef(struct ieee80211_hw *hw, struct ieee80211_chanctx_conf *new) { struct lkpi_hw *lhw; struct cfg80211_chan_def *cd; uint32_t changed; int error; bool same; lockdep_assert_wiphy(hw->wiphy); lhw = HW_TO_LHW(hw); if (!lhw->emulate_chanctx) return (0); if (new == NULL || new->def.chan == NULL) { /* * In case of remove "new" is NULL, we need to get us to some * basic channel width but we'd also need to set the channel * accordingly somewhere. * The same is true if we are scanning in which case the * scan_chandef should have a channel set. */ if (lhw->scan_chandef.chan != NULL) { #ifdef LINUXKPI_DEBUG_80211 if ((linuxkpi_debug_80211 & D80211_CHANDEF) != 0) ic_printf(lhw->ic, "%s:%d: using scan_chandef %p\n", __func__, __LINE__, &lhw->scan_chandef); #endif cd = &lhw->scan_chandef; } else { #ifdef LINUXKPI_DEBUG_80211 if ((linuxkpi_debug_80211 & D80211_CHANDEF) != 0) ic_printf(lhw->ic, "%s:%d: using dflt_chandef %p\n", __func__, __LINE__, &lhw->dflt_chandef); #endif cd = &lhw->dflt_chandef; } } else { #ifdef LINUXKPI_DEBUG_80211 if ((linuxkpi_debug_80211 & D80211_CHANDEF) != 0) ic_printf(lhw->ic, "%s:%d: using chanctx %p chandef %p\n", __func__, __LINE__, new, &new->def); #endif cd = &new->def; } changed = 0; same = cfg80211_chan_def_are_same(cd, &hw->conf.chandef); if (!same) { /* Copy; the chan pointer is fine and will stay valid. */ hw->conf.chandef = *cd; changed |= IEEE80211_CONF_CHANGE_CHANNEL; } IMPROVE("IEEE80211_CONF_CHANGE_PS, IEEE80211_CONF_CHANGE_POWER"); #ifdef LINUXKPI_DEBUG_80211 if ((linuxkpi_debug_80211 & D80211_CHANDEF) != 0) ic_printf(lhw->ic, "%s:%d: chanctx %p { %u } cd %p { %u } " "hw->conf.chandef %p { %u %d %u %u %u }, " "changed %#04x same %d\n", __func__, __LINE__, new, (new != NULL && new->def.chan != NULL) ? new->def.chan->center_freq : 0, cd, cd->chan->center_freq, &hw->conf.chandef, hw->conf.chandef.chan->center_freq, hw->conf.chandef.width, hw->conf.chandef.center_freq1, hw->conf.chandef.center_freq2, hw->conf.chandef.punctured, changed, same); #endif if (changed == 0) return (0); error = lkpi_80211_mo_config(hw, changed); return (error); } int ieee80211_emulate_add_chanctx(struct ieee80211_hw *hw, struct ieee80211_chanctx_conf *chanctx_conf) { int error; lockdep_assert_wiphy(hw->wiphy); #ifdef LINUXKPI_DEBUG_80211 if ((linuxkpi_debug_80211 & D80211_TRACE) != 0) { struct lkpi_hw *lhw; lhw = HW_TO_LHW(hw); ic_printf(lhw->ic, "%s:%d: chanctx_conf %p\n", __func__, __LINE__, chanctx_conf); } #endif hw->conf.radar_enabled = chanctx_conf->radar_enabled; error = lkpi_80211_update_chandef(hw, chanctx_conf); return (error); } void ieee80211_emulate_remove_chanctx(struct ieee80211_hw *hw, struct ieee80211_chanctx_conf *chanctx_conf __unused) { lockdep_assert_wiphy(hw->wiphy); #ifdef LINUXKPI_DEBUG_80211 if ((linuxkpi_debug_80211 & D80211_TRACE) != 0) { struct lkpi_hw *lhw; lhw = HW_TO_LHW(hw); ic_printf(lhw->ic, "%s:%d: chanctx_conf %p\n", __func__, __LINE__, chanctx_conf); } #endif hw->conf.radar_enabled = false; lkpi_80211_update_chandef(hw, NULL); } void ieee80211_emulate_change_chanctx(struct ieee80211_hw *hw, struct ieee80211_chanctx_conf *chanctx_conf, uint32_t changed __unused) { lockdep_assert_wiphy(hw->wiphy); #ifdef LINUXKPI_DEBUG_80211 if ((linuxkpi_debug_80211 & D80211_TRACE) != 0) { struct lkpi_hw *lhw; lhw = HW_TO_LHW(hw); ic_printf(lhw->ic, "%s:%d: chanctx_conf %p\n", __func__, __LINE__, chanctx_conf); } #endif hw->conf.radar_enabled = chanctx_conf->radar_enabled; lkpi_80211_update_chandef(hw, chanctx_conf); } int ieee80211_emulate_switch_vif_chanctx(struct ieee80211_hw *hw, struct ieee80211_vif_chanctx_switch *vifs, int n_vifs, enum ieee80211_chanctx_switch_mode mode __unused) { struct ieee80211_chanctx_conf *chanctx_conf; int error; lockdep_assert_wiphy(hw->wiphy); /* Sanity check. */ if (n_vifs <= 0) return (-EINVAL); if (vifs == NULL || vifs[0].new_ctx == NULL) return (-EINVAL); /* * What to do if n_vifs > 1? * Does that make sense for drivers not supporting chanctx? */ hw->conf.radar_enabled = vifs[0].new_ctx->radar_enabled; chanctx_conf = vifs[0].new_ctx; error = lkpi_80211_update_chandef(hw, chanctx_conf); return (error); } /* -------------------------------------------------------------------------- */ /* LinuxKPI 802.11 PM. */ int lkpi_80211_suspend(struct ieee80211com *ic, pm_message_t state) { struct lkpi_hw *lhw; struct ieee80211_hw *hw; int error; lhw = ic->ic_softc; hw = LHW_TO_HW(lhw); error = 0; /* Check: * - device_set_wakeup_capable() / device_can_wakeup() * - hw->wiphy->wowlan to be non-NULL, if so contents. * - hw->wiphy->max_sched_scan_ssids (rtw88) */ if ((lkpi_suspend_type & 0x2) != 0) { struct cfg80211_wowlan wowlan; IMPROVE("various options for WoWLAN"); memset(&wowlan, 0, sizeof(wowlan)); wiphy_lock(hw->wiphy); error = lkpi_80211_mo_suspend(hw, &wowlan); wiphy_unlock(hw->wiphy); if (error == EOPNOTSUPP) error = 0; } if ((lkpi_suspend_type & 0x1) != 0) { struct lkpi_vif *lvif; ieee80211_suspend_all(ic); wiphy_lock(hw->wiphy); /* * At the end of this net80211 will run a task to call * (*ic_parent)() which is entirely unhelpful as we do not * know when it will happen. So deal with it here. */ TAILQ_FOREACH(lvif, &lhw->lvif_head, lvif_entry) { lkpi_80211_mo_remove_interface(hw, LVIF_TO_VIF(lvif)); } if ((lhw->sc_flags & LKPI_MAC80211_DRV_STARTED) != 0) lkpi_80211_mo_stop(hw, true); wiphy_unlock(hw->wiphy); } if (error < 0) error = -error; if (error != 0) ic_printf(ic, "%s: SUSPEND FAILED: %d\n", __func__, error); return (error); } int lkpi_80211_resume(struct ieee80211com *ic) { struct lkpi_hw *lhw; struct ieee80211_hw *hw; int error; bool hw_scan_running; lhw = ic->ic_softc; hw = LHW_TO_HW(lhw); error = 0; /* * Ongoing HW scans during suspend are a problem on resume. * Be verbose about that. */ LKPI_80211_LHW_SCAN_LOCK(lhw); hw_scan_running = (lhw->scan_flags & (LKPI_LHW_SCAN_RUNNING|LKPI_LHW_SCAN_HW)) != 0; LKPI_80211_LHW_SCAN_UNLOCK(lhw); if (hw_scan_running) ic_printf(ic, "%s: WARNING: ongoing hw scan on resume!\n", __func__); if ((lkpi_suspend_type & 0x1) != 0) { struct lkpi_vif *lvif; wiphy_lock(hw->wiphy); error = lkpi_80211_mo_start(hw); if (error != 0 && error != EEXIST) { ic_printf(ic, "%s: mo_start failed: %d\n", __func__, error); wiphy_unlock(hw->wiphy); goto err; } TAILQ_FOREACH(lvif, &lhw->lvif_head, lvif_entry) { error = lkpi_80211_mo_add_interface(hw, LVIF_TO_VIF(lvif)); if (error != 0) { struct ieee80211vap *vap; vap = LVIF_TO_VAP(lvif); ic_printf(ic, "%s: mo_add_interface %s failed: %d\n", __func__, if_name(vap->iv_ifp), error); wiphy_unlock(hw->wiphy); goto err; } } wiphy_unlock(hw->wiphy); ieee80211_resume_all(ic); } if ((lkpi_suspend_type & 0x2) != 0) { wiphy_lock(hw->wiphy); error = lkpi_80211_mo_resume(hw); wiphy_unlock(hw->wiphy); if (error == EOPNOTSUPP) error = 0; } err: if (error < 0) error = -error; return (error); } /* -------------------------------------------------------------------------- */ MODULE_VERSION(linuxkpi_wlan, 1); MODULE_DEPEND(linuxkpi_wlan, linuxkpi, 1, 1, 1); MODULE_DEPEND(linuxkpi_wlan, wlan, 1, 1, 1);