diff options
Diffstat (limited to 'net/mac80211/mlme.c')
-rw-r--r-- | net/mac80211/mlme.c | 436 |
1 files changed, 174 insertions, 262 deletions
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 741448b3082..ae31968d42d 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -91,41 +91,6 @@ MODULE_PARM_DESC(probe_wait_ms, #define IEEE80211_SIGNAL_AVE_MIN_COUNT 4 /* - * All cfg80211 functions have to be called outside a locked - * section so that they can acquire a lock themselves... This - * is much simpler than queuing up things in cfg80211, but we - * do need some indirection for that here. - */ -enum rx_mgmt_action { - /* no action required */ - RX_MGMT_NONE, - - /* caller must call cfg80211_send_deauth() */ - RX_MGMT_CFG80211_DEAUTH, - - /* caller must call cfg80211_send_disassoc() */ - RX_MGMT_CFG80211_DISASSOC, - - /* caller must call cfg80211_send_rx_auth() */ - RX_MGMT_CFG80211_RX_AUTH, - - /* caller must call cfg80211_send_rx_assoc() */ - RX_MGMT_CFG80211_RX_ASSOC, - - /* caller must call cfg80211_send_assoc_timeout() */ - RX_MGMT_CFG80211_ASSOC_TIMEOUT, - - /* used when a processed beacon causes a deauth */ - RX_MGMT_CFG80211_TX_DEAUTH, -}; - -/* utils */ -static inline void ASSERT_MGD_MTX(struct ieee80211_if_managed *ifmgd) -{ - lockdep_assert_held(&ifmgd->mtx); -} - -/* * We can have multiple work items (and connection probing) * scheduling this timer, but we need to take care to only * reschedule it when it should fire _earlier_ than it was @@ -135,13 +100,14 @@ static inline void ASSERT_MGD_MTX(struct ieee80211_if_managed *ifmgd) * has happened -- the work that runs from this timer will * do that. */ -static void run_again(struct ieee80211_if_managed *ifmgd, unsigned long timeout) +static void run_again(struct ieee80211_sub_if_data *sdata, + unsigned long timeout) { - ASSERT_MGD_MTX(ifmgd); + sdata_assert_lock(sdata); - if (!timer_pending(&ifmgd->timer) || - time_before(timeout, ifmgd->timer.expires)) - mod_timer(&ifmgd->timer, timeout); + if (!timer_pending(&sdata->u.mgd.timer) || + time_before(timeout, sdata->u.mgd.timer.expires)) + mod_timer(&sdata->u.mgd.timer, timeout); } void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata) @@ -224,6 +190,12 @@ static u32 chandef_downgrade(struct cfg80211_chan_def *c) c->width = NL80211_CHAN_WIDTH_20_NOHT; ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; break; + case NL80211_CHAN_WIDTH_5: + case NL80211_CHAN_WIDTH_10: + WARN_ON_ONCE(1); + /* keep c->width */ + ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; + break; } WARN_ON_ONCE(!cfg80211_chandef_valid(c)); @@ -652,7 +624,7 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata) struct ieee80211_channel *chan; u32 rates = 0; - lockdep_assert_held(&ifmgd->mtx); + sdata_assert_lock(sdata); rcu_read_lock(); chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); @@ -914,6 +886,10 @@ void ieee80211_send_nullfunc(struct ieee80211_local *local, IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | IEEE80211_TX_INTFL_OFFCHAN_TX_OK; + + if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) + IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS; + if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL | IEEE80211_STA_CONNECTION_POLL)) IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE; @@ -962,7 +938,7 @@ static void ieee80211_chswitch_work(struct work_struct *work) if (!ieee80211_sdata_running(sdata)) return; - mutex_lock(&ifmgd->mtx); + sdata_lock(sdata); if (!ifmgd->associated) goto out; @@ -985,7 +961,7 @@ static void ieee80211_chswitch_work(struct work_struct *work) IEEE80211_QUEUE_STOP_REASON_CSA); out: ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED; - mutex_unlock(&ifmgd->mtx); + sdata_unlock(sdata); } void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success) @@ -1036,7 +1012,7 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, const struct ieee80211_ht_operation *ht_oper; int secondary_channel_offset = -1; - ASSERT_MGD_MTX(ifmgd); + sdata_assert_lock(sdata); if (!cbss) return; @@ -1390,6 +1366,9 @@ static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata) IEEE80211_STA_CONNECTION_POLL)) return false; + if (!mgd->have_beacon) + return false; + rcu_read_lock(); sta = sta_info_get(sdata, mgd->bssid); if (sta) @@ -1798,7 +1777,7 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, ieee80211_led_assoc(local, 1); - if (sdata->u.mgd.assoc_data->have_beacon) { + if (sdata->u.mgd.have_beacon) { /* * If the AP is buggy we may get here with no DTIM period * known, so assume it's 1 which is the only safe assumption @@ -1806,8 +1785,10 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, * probably just won't work at all. */ bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1; - bss_info_changed |= BSS_CHANGED_DTIM_PERIOD; + bss_conf->beacon_rate = bss->beacon_rate; + bss_info_changed |= BSS_CHANGED_BEACON_INFO; } else { + bss_conf->beacon_rate = NULL; bss_conf->dtim_period = 0; } @@ -1842,7 +1823,7 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, struct ieee80211_local *local = sdata->local; u32 changed = 0; - ASSERT_MGD_MTX(ifmgd); + sdata_assert_lock(sdata); if (WARN_ON_ONCE(tx && !frame_buf)) return; @@ -1930,6 +1911,9 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, del_timer_sync(&sdata->u.mgd.chswitch_timer); sdata->vif.bss_conf.dtim_period = 0; + sdata->vif.bss_conf.beacon_rate = NULL; + + ifmgd->have_beacon = false; ifmgd->flags = 0; ieee80211_vif_release_channel(sdata); @@ -2051,7 +2035,7 @@ static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata) } ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms); - run_again(ifmgd, ifmgd->probe_timeout); + run_again(sdata, ifmgd->probe_timeout); if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) ieee80211_flush_queues(sdata->local, sdata); } @@ -2065,7 +2049,7 @@ static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata, if (!ieee80211_sdata_running(sdata)) return; - mutex_lock(&ifmgd->mtx); + sdata_lock(sdata); if (!ifmgd->associated) goto out; @@ -2119,7 +2103,7 @@ static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata, ifmgd->probe_send_count = 0; ieee80211_mgd_probe_ap_send(sdata); out: - mutex_unlock(&ifmgd->mtx); + sdata_unlock(sdata); } struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw, @@ -2135,7 +2119,7 @@ struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw, if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) return NULL; - ASSERT_MGD_MTX(ifmgd); + sdata_assert_lock(sdata); if (ifmgd->associated) cbss = ifmgd->associated; @@ -2168,9 +2152,9 @@ static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata) struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; - mutex_lock(&ifmgd->mtx); + sdata_lock(sdata); if (!ifmgd->associated) { - mutex_unlock(&ifmgd->mtx); + sdata_unlock(sdata); return; } @@ -2181,13 +2165,10 @@ static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata) ieee80211_wake_queues_by_reason(&sdata->local->hw, IEEE80211_MAX_QUEUE_MAP, IEEE80211_QUEUE_STOP_REASON_CSA); - mutex_unlock(&ifmgd->mtx); - /* - * must be outside lock due to cfg80211, - * but that's not a problem. - */ - cfg80211_send_deauth(sdata->dev, frame_buf, IEEE80211_DEAUTH_FRAME_LEN); + cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, + IEEE80211_DEAUTH_FRAME_LEN); + sdata_unlock(sdata); } static void ieee80211_beacon_connection_loss_work(struct work_struct *work) @@ -2254,7 +2235,7 @@ static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata, { struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data; - lockdep_assert_held(&sdata->u.mgd.mtx); + sdata_assert_lock(sdata); if (!assoc) { sta_info_destroy_addr(sdata, auth_data->bss->bssid); @@ -2295,27 +2276,26 @@ static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata, auth_data->key_idx, tx_flags); } -static enum rx_mgmt_action __must_check -ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, - struct ieee80211_mgmt *mgmt, size_t len) +static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, + struct ieee80211_mgmt *mgmt, size_t len) { struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; u8 bssid[ETH_ALEN]; u16 auth_alg, auth_transaction, status_code; struct sta_info *sta; - lockdep_assert_held(&ifmgd->mtx); + sdata_assert_lock(sdata); if (len < 24 + 6) - return RX_MGMT_NONE; + return; if (!ifmgd->auth_data || ifmgd->auth_data->done) - return RX_MGMT_NONE; + return; memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN); if (!ether_addr_equal(bssid, mgmt->bssid)) - return RX_MGMT_NONE; + return; auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); @@ -2327,14 +2307,15 @@ ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, mgmt->sa, auth_alg, ifmgd->auth_data->algorithm, auth_transaction, ifmgd->auth_data->expected_transaction); - return RX_MGMT_NONE; + return; } if (status_code != WLAN_STATUS_SUCCESS) { sdata_info(sdata, "%pM denied authentication (status %d)\n", mgmt->sa, status_code); ieee80211_destroy_auth_data(sdata, false); - return RX_MGMT_CFG80211_RX_AUTH; + cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); + return; } switch (ifmgd->auth_data->algorithm) { @@ -2347,20 +2328,20 @@ ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, if (ifmgd->auth_data->expected_transaction != 4) { ieee80211_auth_challenge(sdata, mgmt, len); /* need another frame */ - return RX_MGMT_NONE; + return; } break; default: WARN_ONCE(1, "invalid auth alg %d", ifmgd->auth_data->algorithm); - return RX_MGMT_NONE; + return; } sdata_info(sdata, "authenticated\n"); ifmgd->auth_data->done = true; ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC; ifmgd->auth_data->timeout_started = true; - run_again(ifmgd, ifmgd->auth_data->timeout); + run_again(sdata, ifmgd->auth_data->timeout); if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE && ifmgd->auth_data->expected_transaction != 2) { @@ -2368,7 +2349,8 @@ ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, * Report auth frame to user space for processing since another * round of Authentication frames is still needed. */ - return RX_MGMT_CFG80211_RX_AUTH; + cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); + return; } /* move station state to auth */ @@ -2384,30 +2366,29 @@ ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, } mutex_unlock(&sdata->local->sta_mtx); - return RX_MGMT_CFG80211_RX_AUTH; + cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); + return; out_err: mutex_unlock(&sdata->local->sta_mtx); /* ignore frame -- wait for timeout */ - return RX_MGMT_NONE; } -static enum rx_mgmt_action __must_check -ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, - struct ieee80211_mgmt *mgmt, size_t len) +static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, + struct ieee80211_mgmt *mgmt, size_t len) { struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; const u8 *bssid = NULL; u16 reason_code; - lockdep_assert_held(&ifmgd->mtx); + sdata_assert_lock(sdata); if (len < 24 + 2) - return RX_MGMT_NONE; + return; if (!ifmgd->associated || !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) - return RX_MGMT_NONE; + return; bssid = ifmgd->associated->bssid; @@ -2418,25 +2399,24 @@ ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, ieee80211_set_disassoc(sdata, 0, 0, false, NULL); - return RX_MGMT_CFG80211_DEAUTH; + cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); } -static enum rx_mgmt_action __must_check -ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, - struct ieee80211_mgmt *mgmt, size_t len) +static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, + struct ieee80211_mgmt *mgmt, size_t len) { struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; u16 reason_code; - lockdep_assert_held(&ifmgd->mtx); + sdata_assert_lock(sdata); if (len < 24 + 2) - return RX_MGMT_NONE; + return; if (!ifmgd->associated || !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) - return RX_MGMT_NONE; + return; reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); @@ -2445,7 +2425,7 @@ ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, ieee80211_set_disassoc(sdata, 0, 0, false, NULL); - return RX_MGMT_CFG80211_DISASSOC; + cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); } static void ieee80211_get_rates(struct ieee80211_supported_band *sband, @@ -2495,7 +2475,7 @@ static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata, { struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data; - lockdep_assert_held(&sdata->u.mgd.mtx); + sdata_assert_lock(sdata); if (!assoc) { sta_info_destroy_addr(sdata, assoc_data->bss->bssid); @@ -2749,10 +2729,9 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata, return ret; } -static enum rx_mgmt_action __must_check -ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, - struct ieee80211_mgmt *mgmt, size_t len, - struct cfg80211_bss **bss) +static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, + struct ieee80211_mgmt *mgmt, + size_t len) { struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; @@ -2760,13 +2739,14 @@ ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, struct ieee802_11_elems elems; u8 *pos; bool reassoc; + struct cfg80211_bss *bss; - lockdep_assert_held(&ifmgd->mtx); + sdata_assert_lock(sdata); if (!assoc_data) - return RX_MGMT_NONE; + return; if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid)) - return RX_MGMT_NONE; + return; /* * AssocResp and ReassocResp have identical structure, so process both @@ -2774,7 +2754,7 @@ ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, */ if (len < 24 + 6) - return RX_MGMT_NONE; + return; reassoc = ieee80211_is_reassoc_req(mgmt->frame_control); capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); @@ -2801,22 +2781,22 @@ ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, assoc_data->timeout = jiffies + msecs_to_jiffies(ms); assoc_data->timeout_started = true; if (ms > IEEE80211_ASSOC_TIMEOUT) - run_again(ifmgd, assoc_data->timeout); - return RX_MGMT_NONE; + run_again(sdata, assoc_data->timeout); + return; } - *bss = assoc_data->bss; + bss = assoc_data->bss; if (status_code != WLAN_STATUS_SUCCESS) { sdata_info(sdata, "%pM denied association (code=%d)\n", mgmt->sa, status_code); ieee80211_destroy_assoc_data(sdata, false); } else { - if (!ieee80211_assoc_success(sdata, *bss, mgmt, len)) { + if (!ieee80211_assoc_success(sdata, bss, mgmt, len)) { /* oops -- internal error -- send timeout for now */ ieee80211_destroy_assoc_data(sdata, false); - cfg80211_put_bss(sdata->local->hw.wiphy, *bss); - return RX_MGMT_CFG80211_ASSOC_TIMEOUT; + cfg80211_assoc_timeout(sdata->dev, bss); + return; } sdata_info(sdata, "associated\n"); @@ -2828,7 +2808,7 @@ ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, ieee80211_destroy_assoc_data(sdata, true); } - return RX_MGMT_CFG80211_RX_ASSOC; + cfg80211_rx_assoc_resp(sdata->dev, bss, (u8 *)mgmt, len); } static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, @@ -2840,23 +2820,8 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, int freq; struct ieee80211_bss *bss; struct ieee80211_channel *channel; - bool need_ps = false; - - lockdep_assert_held(&sdata->u.mgd.mtx); - if ((sdata->u.mgd.associated && - ether_addr_equal(mgmt->bssid, sdata->u.mgd.associated->bssid)) || - (sdata->u.mgd.assoc_data && - ether_addr_equal(mgmt->bssid, - sdata->u.mgd.assoc_data->bss->bssid))) { - /* not previously set so we may need to recalc */ - need_ps = sdata->u.mgd.associated && !sdata->u.mgd.dtim_period; - - if (elems->tim && !elems->parse_error) { - const struct ieee80211_tim_ie *tim_ie = elems->tim; - sdata->u.mgd.dtim_period = tim_ie->dtim_period; - } - } + sdata_assert_lock(sdata); if (elems->ds_params) freq = ieee80211_channel_to_frequency(elems->ds_params[0], @@ -2871,19 +2836,15 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, channel); - if (bss) + if (bss) { ieee80211_rx_bss_put(local, bss); + sdata->vif.bss_conf.beacon_rate = bss->beacon_rate; + } if (!sdata->u.mgd.associated || !ether_addr_equal(mgmt->bssid, sdata->u.mgd.associated->bssid)) return; - if (need_ps) { - mutex_lock(&local->iflist_mtx); - ieee80211_recalc_ps(local, -1); - mutex_unlock(&local->iflist_mtx); - } - ieee80211_sta_process_chanswitch(sdata, rx_status->mactime, elems, true); @@ -2901,7 +2862,7 @@ static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, ifmgd = &sdata->u.mgd; - ASSERT_MGD_MTX(ifmgd); + sdata_assert_lock(sdata); if (!ether_addr_equal(mgmt->da, sdata->vif.addr)) return; /* ignore ProbeResp to foreign address */ @@ -2926,7 +2887,7 @@ static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, ifmgd->auth_data->tries = 0; ifmgd->auth_data->timeout = jiffies; ifmgd->auth_data->timeout_started = true; - run_again(ifmgd, ifmgd->auth_data->timeout); + run_again(sdata, ifmgd->auth_data->timeout); } } @@ -2951,10 +2912,9 @@ static const u64 care_about_ies = (1ULL << WLAN_EID_HT_CAPABILITY) | (1ULL << WLAN_EID_HT_OPERATION); -static enum rx_mgmt_action -ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, - struct ieee80211_mgmt *mgmt, size_t len, - u8 *deauth_buf, struct ieee80211_rx_status *rx_status) +static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, + struct ieee80211_mgmt *mgmt, size_t len, + struct ieee80211_rx_status *rx_status) { struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; @@ -2969,24 +2929,25 @@ ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, u8 erp_value = 0; u32 ncrc; u8 *bssid; + u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN]; - lockdep_assert_held(&ifmgd->mtx); + sdata_assert_lock(sdata); /* Process beacon from the current BSS */ baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; if (baselen > len) - return RX_MGMT_NONE; + return; rcu_read_lock(); chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); if (!chanctx_conf) { rcu_read_unlock(); - return RX_MGMT_NONE; + return; } if (rx_status->freq != chanctx_conf->def.chan->center_freq) { rcu_read_unlock(); - return RX_MGMT_NONE; + return; } chan = chanctx_conf->def.chan; rcu_read_unlock(); @@ -2997,7 +2958,11 @@ ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, len - baselen, false, &elems); ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); - ifmgd->assoc_data->have_beacon = true; + if (elems.tim && !elems.parse_error) { + const struct ieee80211_tim_ie *tim_ie = elems.tim; + ifmgd->dtim_period = tim_ie->dtim_period; + } + ifmgd->have_beacon = true; ifmgd->assoc_data->need_beacon = false; if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) { sdata->vif.bss_conf.sync_tsf = @@ -3013,13 +2978,13 @@ ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, /* continue assoc process */ ifmgd->assoc_data->timeout = jiffies; ifmgd->assoc_data->timeout_started = true; - run_again(ifmgd, ifmgd->assoc_data->timeout); - return RX_MGMT_NONE; + run_again(sdata, ifmgd->assoc_data->timeout); + return; } if (!ifmgd->associated || !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) - return RX_MGMT_NONE; + return; bssid = ifmgd->associated->bssid; /* Track average RSSI from the Beacon frames of the current AP */ @@ -3165,7 +3130,7 @@ ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, } if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid) - return RX_MGMT_NONE; + return; ifmgd->beacon_crc = ncrc; ifmgd->beacon_crc_valid = true; @@ -3179,7 +3144,7 @@ ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, * If we haven't had a beacon before, tell the driver about the * DTIM period (and beacon timing if desired) now. */ - if (!bss_conf->dtim_period) { + if (!ifmgd->have_beacon) { /* a few bogus AP send dtim_period = 0 or no TIM IE */ if (elems.tim) bss_conf->dtim_period = elems.tim->dtim_period ?: 1; @@ -3198,7 +3163,14 @@ ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, sdata->vif.bss_conf.sync_dtim_count = 0; } - changed |= BSS_CHANGED_DTIM_PERIOD; + changed |= BSS_CHANGED_BEACON_INFO; + ifmgd->have_beacon = true; + + mutex_lock(&local->iflist_mtx); + ieee80211_recalc_ps(local, -1); + mutex_unlock(&local->iflist_mtx); + + ieee80211_recalc_ps_vif(sdata); } if (elems.erp_info) { @@ -3220,7 +3192,9 @@ ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, WLAN_REASON_DEAUTH_LEAVING, true, deauth_buf); - return RX_MGMT_CFG80211_TX_DEAUTH; + cfg80211_tx_mlme_mgmt(sdata->dev, deauth_buf, + sizeof(deauth_buf)); + return; } if (sta && elems.opmode_notif) @@ -3237,19 +3211,13 @@ ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, elems.pwr_constr_elem); ieee80211_bss_info_change_notify(sdata, changed); - - return RX_MGMT_NONE; } void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb) { - struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_rx_status *rx_status; struct ieee80211_mgmt *mgmt; - struct cfg80211_bss *bss = NULL; - enum rx_mgmt_action rma = RX_MGMT_NONE; - u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN]; u16 fc; struct ieee802_11_elems elems; int ies_len; @@ -3258,28 +3226,27 @@ void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, mgmt = (struct ieee80211_mgmt *) skb->data; fc = le16_to_cpu(mgmt->frame_control); - mutex_lock(&ifmgd->mtx); + sdata_lock(sdata); switch (fc & IEEE80211_FCTL_STYPE) { case IEEE80211_STYPE_BEACON: - rma = ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, - deauth_buf, rx_status); + ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status); break; case IEEE80211_STYPE_PROBE_RESP: ieee80211_rx_mgmt_probe_resp(sdata, skb); break; case IEEE80211_STYPE_AUTH: - rma = ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len); + ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len); break; case IEEE80211_STYPE_DEAUTH: - rma = ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len); + ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len); break; case IEEE80211_STYPE_DISASSOC: - rma = ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len); + ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len); break; case IEEE80211_STYPE_ASSOC_RESP: case IEEE80211_STYPE_REASSOC_RESP: - rma = ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len, &bss); + ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len); break; case IEEE80211_STYPE_ACTION: if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) { @@ -3325,34 +3292,7 @@ void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, } break; } - mutex_unlock(&ifmgd->mtx); - - switch (rma) { - case RX_MGMT_NONE: - /* no action */ - break; - case RX_MGMT_CFG80211_DEAUTH: - cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, skb->len); - break; - case RX_MGMT_CFG80211_DISASSOC: - cfg80211_send_disassoc(sdata->dev, (u8 *)mgmt, skb->len); - break; - case RX_MGMT_CFG80211_RX_AUTH: - cfg80211_send_rx_auth(sdata->dev, (u8 *)mgmt, skb->len); - break; - case RX_MGMT_CFG80211_RX_ASSOC: - cfg80211_send_rx_assoc(sdata->dev, bss, (u8 *)mgmt, skb->len); - break; - case RX_MGMT_CFG80211_ASSOC_TIMEOUT: - cfg80211_send_assoc_timeout(sdata->dev, mgmt->bssid); - break; - case RX_MGMT_CFG80211_TX_DEAUTH: - cfg80211_send_deauth(sdata->dev, deauth_buf, - sizeof(deauth_buf)); - break; - default: - WARN(1, "unexpected: %d", rma); - } + sdata_unlock(sdata); } static void ieee80211_sta_timer(unsigned long data) @@ -3366,20 +3306,13 @@ static void ieee80211_sta_timer(unsigned long data) static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, u8 *bssid, u8 reason, bool tx) { - struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason, tx, frame_buf); - mutex_unlock(&ifmgd->mtx); - /* - * must be outside lock due to cfg80211, - * but that's not a problem. - */ - cfg80211_send_deauth(sdata->dev, frame_buf, IEEE80211_DEAUTH_FRAME_LEN); - - mutex_lock(&ifmgd->mtx); + cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, + IEEE80211_DEAUTH_FRAME_LEN); } static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata) @@ -3389,7 +3322,7 @@ static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata) struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data; u32 tx_flags = 0; - lockdep_assert_held(&ifmgd->mtx); + sdata_assert_lock(sdata); if (WARN_ON_ONCE(!auth_data)) return -EINVAL; @@ -3462,7 +3395,7 @@ static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata) if (tx_flags == 0) { auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT; ifmgd->auth_data->timeout_started = true; - run_again(ifmgd, auth_data->timeout); + run_again(sdata, auth_data->timeout); } else { auth_data->timeout_started = false; } @@ -3475,7 +3408,7 @@ static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata) struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data; struct ieee80211_local *local = sdata->local; - lockdep_assert_held(&sdata->u.mgd.mtx); + sdata_assert_lock(sdata); assoc_data->tries++; if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) { @@ -3499,7 +3432,7 @@ static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata) if (!(local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) { assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT; assoc_data->timeout_started = true; - run_again(&sdata->u.mgd, assoc_data->timeout); + run_again(sdata, assoc_data->timeout); } else { assoc_data->timeout_started = false; } @@ -3524,7 +3457,7 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) struct ieee80211_local *local = sdata->local; struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; - mutex_lock(&ifmgd->mtx); + sdata_lock(sdata); if (ifmgd->status_received) { __le16 fc = ifmgd->status_fc; @@ -3536,7 +3469,7 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) if (status_acked) { ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT_SHORT; - run_again(ifmgd, ifmgd->auth_data->timeout); + run_again(sdata, ifmgd->auth_data->timeout); } else { ifmgd->auth_data->timeout = jiffies - 1; } @@ -3547,7 +3480,7 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) if (status_acked) { ifmgd->assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT; - run_again(ifmgd, ifmgd->assoc_data->timeout); + run_again(sdata, ifmgd->assoc_data->timeout); } else { ifmgd->assoc_data->timeout = jiffies - 1; } @@ -3570,30 +3503,22 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) ieee80211_destroy_auth_data(sdata, false); - mutex_unlock(&ifmgd->mtx); - cfg80211_send_auth_timeout(sdata->dev, bssid); - mutex_lock(&ifmgd->mtx); + cfg80211_auth_timeout(sdata->dev, bssid); } } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started) - run_again(ifmgd, ifmgd->auth_data->timeout); + run_again(sdata, ifmgd->auth_data->timeout); if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started && time_after(jiffies, ifmgd->assoc_data->timeout)) { - if ((ifmgd->assoc_data->need_beacon && - !ifmgd->assoc_data->have_beacon) || + if ((ifmgd->assoc_data->need_beacon && !ifmgd->have_beacon) || ieee80211_do_assoc(sdata)) { - u8 bssid[ETH_ALEN]; - - memcpy(bssid, ifmgd->assoc_data->bss->bssid, ETH_ALEN); + struct cfg80211_bss *bss = ifmgd->assoc_data->bss; ieee80211_destroy_assoc_data(sdata, false); - - mutex_unlock(&ifmgd->mtx); - cfg80211_send_assoc_timeout(sdata->dev, bssid); - mutex_lock(&ifmgd->mtx); + cfg80211_assoc_timeout(sdata->dev, bss); } } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started) - run_again(ifmgd, ifmgd->assoc_data->timeout); + run_again(sdata, ifmgd->assoc_data->timeout); if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL | IEEE80211_STA_CONNECTION_POLL) && @@ -3627,7 +3552,7 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) false); } } else if (time_is_after_jiffies(ifmgd->probe_timeout)) - run_again(ifmgd, ifmgd->probe_timeout); + run_again(sdata, ifmgd->probe_timeout); else if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) { mlme_dbg(sdata, "Failed to send nullfunc to AP %pM after %dms, disconnecting\n", @@ -3656,7 +3581,7 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) } } - mutex_unlock(&ifmgd->mtx); + sdata_unlock(sdata); } static void ieee80211_sta_bcn_mon_timer(unsigned long data) @@ -3717,9 +3642,9 @@ void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata) { struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; - mutex_lock(&ifmgd->mtx); + sdata_lock(sdata); if (!ifmgd->associated) { - mutex_unlock(&ifmgd->mtx); + sdata_unlock(sdata); return; } @@ -3730,10 +3655,10 @@ void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata) ifmgd->associated->bssid, WLAN_REASON_UNSPECIFIED, true); - mutex_unlock(&ifmgd->mtx); + sdata_unlock(sdata); return; } - mutex_unlock(&ifmgd->mtx); + sdata_unlock(sdata); } #endif @@ -3765,8 +3690,6 @@ void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata) ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len; ifmgd->p2p_noa_index = -1; - mutex_init(&ifmgd->mtx); - if (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS) ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC; else @@ -3923,6 +3846,12 @@ static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata, */ ret = ieee80211_vif_use_channel(sdata, &chandef, IEEE80211_CHANCTX_SHARED); + + /* don't downgrade for 5 and 10 MHz channels, though. */ + if (chandef.width == NL80211_CHAN_WIDTH_5 || + chandef.width == NL80211_CHAN_WIDTH_10) + return ret; + while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) { ifmgd->flags |= chandef_downgrade(&chandef); ret = ieee80211_vif_use_channel(sdata, &chandef, @@ -4122,8 +4051,6 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, /* try to authenticate/probe */ - mutex_lock(&ifmgd->mtx); - if ((ifmgd->auth_data && !ifmgd->auth_data->done) || ifmgd->assoc_data) { err = -EBUSY; @@ -4143,8 +4070,8 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, WLAN_REASON_UNSPECIFIED, false, frame_buf); - __cfg80211_send_deauth(sdata->dev, frame_buf, - sizeof(frame_buf)); + cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, + sizeof(frame_buf)); } sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid); @@ -4161,8 +4088,7 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, /* hold our own reference */ cfg80211_ref_bss(local->hw.wiphy, auth_data->bss); - err = 0; - goto out_unlock; + return 0; err_clear: memset(ifmgd->bssid, 0, ETH_ALEN); @@ -4170,9 +4096,6 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, ifmgd->auth_data = NULL; err_free: kfree(auth_data); - out_unlock: - mutex_unlock(&ifmgd->mtx); - return err; } @@ -4203,8 +4126,6 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, assoc_data->ssid_len = ssidie[1]; rcu_read_unlock(); - mutex_lock(&ifmgd->mtx); - if (ifmgd->associated) { u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; @@ -4212,8 +4133,8 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, WLAN_REASON_UNSPECIFIED, false, frame_buf); - __cfg80211_send_deauth(sdata->dev, frame_buf, - sizeof(frame_buf)); + cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, + sizeof(frame_buf)); } if (ifmgd->auth_data && !ifmgd->auth_data->done) { @@ -4360,6 +4281,7 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, ifmgd->assoc_data = assoc_data; ifmgd->dtim_period = 0; + ifmgd->have_beacon = false; err = ieee80211_prep_connection(sdata, req->bss, true); if (err) @@ -4391,7 +4313,7 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, ifmgd->dtim_period = tim->dtim_period; dtim_count = tim->dtim_count; } - assoc_data->have_beacon = true; + ifmgd->have_beacon = true; assoc_data->timeout = jiffies; assoc_data->timeout_started = true; @@ -4407,7 +4329,7 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, } rcu_read_unlock(); - run_again(ifmgd, assoc_data->timeout); + run_again(sdata, assoc_data->timeout); if (bss->corrupt_data) { char *corrupt_type = "data"; @@ -4423,17 +4345,13 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, corrupt_type); } - err = 0; - goto out; + return 0; err_clear: memset(ifmgd->bssid, 0, ETH_ALEN); ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); ifmgd->assoc_data = NULL; err_free: kfree(assoc_data); - out: - mutex_unlock(&ifmgd->mtx); - return err; } @@ -4445,8 +4363,6 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, bool tx = !req->local_state_change; bool report_frame = false; - mutex_lock(&ifmgd->mtx); - sdata_info(sdata, "deauthenticating from %pM by local choice (reason=%d)\n", req->bssid, req->reason_code); @@ -4458,7 +4374,6 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, req->reason_code, tx, frame_buf); ieee80211_destroy_auth_data(sdata, false); - mutex_unlock(&ifmgd->mtx); report_frame = true; goto out; @@ -4470,12 +4385,11 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, req->reason_code, tx, frame_buf); report_frame = true; } - mutex_unlock(&ifmgd->mtx); out: if (report_frame) - __cfg80211_send_deauth(sdata->dev, frame_buf, - IEEE80211_DEAUTH_FRAME_LEN); + cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, + IEEE80211_DEAUTH_FRAME_LEN); return 0; } @@ -4487,18 +4401,14 @@ int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, u8 bssid[ETH_ALEN]; u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; - mutex_lock(&ifmgd->mtx); - /* * cfg80211 should catch this ... but it's racy since * we can receive a disassoc frame, process it, hand it * to cfg80211 while that's in a locked section already * trying to tell us that the user wants to disconnect. */ - if (ifmgd->associated != req->bss) { - mutex_unlock(&ifmgd->mtx); + if (ifmgd->associated != req->bss) return -ENOLINK; - } sdata_info(sdata, "disassociating from %pM by local choice (reason=%d)\n", @@ -4508,10 +4418,9 @@ int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC, req->reason_code, !req->local_state_change, frame_buf); - mutex_unlock(&ifmgd->mtx); - __cfg80211_send_disassoc(sdata->dev, frame_buf, - IEEE80211_DEAUTH_FRAME_LEN); + cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, + IEEE80211_DEAUTH_FRAME_LEN); return 0; } @@ -4531,13 +4440,16 @@ void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata) cancel_work_sync(&ifmgd->csa_connection_drop_work); cancel_work_sync(&ifmgd->chswitch_work); - mutex_lock(&ifmgd->mtx); - if (ifmgd->assoc_data) + sdata_lock(sdata); + if (ifmgd->assoc_data) { + struct cfg80211_bss *bss = ifmgd->assoc_data->bss; ieee80211_destroy_assoc_data(sdata, false); + cfg80211_assoc_timeout(sdata->dev, bss); + } if (ifmgd->auth_data) ieee80211_destroy_auth_data(sdata, false); del_timer_sync(&ifmgd->timer); - mutex_unlock(&ifmgd->mtx); + sdata_unlock(sdata); } void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif, |