diff options
Diffstat (limited to 'net/mac80211/mlme.c')
-rw-r--r-- | net/mac80211/mlme.c | 236 |
1 files changed, 159 insertions, 77 deletions
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 142f66a..26053bf 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -1168,11 +1168,7 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, if (!conf) { sdata_info(sdata, "no channel context assigned to vif?, disconnecting\n"); - ieee80211_queue_work(&local->hw, - &ifmgd->csa_connection_drop_work); - mutex_unlock(&local->chanctx_mtx); - mutex_unlock(&local->mtx); - return; + goto drop_connection; } chanctx = container_of(conf, struct ieee80211_chanctx, conf); @@ -1181,11 +1177,7 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, !(local->hw.flags & IEEE80211_HW_CHANCTX_STA_CSA)) { sdata_info(sdata, "driver doesn't support chan-switch with channel contexts\n"); - ieee80211_queue_work(&local->hw, - &ifmgd->csa_connection_drop_work); - mutex_unlock(&local->chanctx_mtx); - mutex_unlock(&local->mtx); - return; + goto drop_connection; } ch_switch.timestamp = timestamp; @@ -1197,11 +1189,7 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, if (drv_pre_channel_switch(sdata, &ch_switch)) { sdata_info(sdata, "preparing for channel switch failed, disconnecting\n"); - ieee80211_queue_work(&local->hw, - &ifmgd->csa_connection_drop_work); - mutex_unlock(&local->chanctx_mtx); - mutex_unlock(&local->mtx); - return; + goto drop_connection; } res = ieee80211_vif_reserve_chanctx(sdata, &csa_ie.chandef, @@ -1210,11 +1198,7 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, sdata_info(sdata, "failed to reserve channel context for channel switch, disconnecting (err=%d)\n", res); - ieee80211_queue_work(&local->hw, - &ifmgd->csa_connection_drop_work); - mutex_unlock(&local->chanctx_mtx); - mutex_unlock(&local->mtx); - return; + goto drop_connection; } mutex_unlock(&local->chanctx_mtx); @@ -1244,6 +1228,11 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, mod_timer(&ifmgd->chswitch_timer, TU_TO_EXP_TIME((csa_ie.count - 1) * cbss->beacon_interval)); + return; + drop_connection: + ieee80211_queue_work(&local->hw, &ifmgd->csa_connection_drop_work); + mutex_unlock(&local->chanctx_mtx); + mutex_unlock(&local->mtx); } static bool @@ -1359,15 +1348,15 @@ static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata, */ if (has_80211h_pwr && (!has_cisco_pwr || pwr_level_80211h <= pwr_level_cisco)) { - sdata_info(sdata, - "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n", - pwr_level_80211h, chan_pwr, pwr_reduction_80211h, - sdata->u.mgd.bssid); + sdata_dbg(sdata, + "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n", + pwr_level_80211h, chan_pwr, pwr_reduction_80211h, + sdata->u.mgd.bssid); new_ap_level = pwr_level_80211h; } else { /* has_cisco_pwr is always true here. */ - sdata_info(sdata, - "Limiting TX power to %d dBm as advertised by %pM\n", - pwr_level_cisco, sdata->u.mgd.bssid); + sdata_dbg(sdata, + "Limiting TX power to %d dBm as advertised by %pM\n", + pwr_level_cisco, sdata->u.mgd.bssid); new_ap_level = pwr_level_cisco; } @@ -1633,9 +1622,6 @@ void ieee80211_dynamic_ps_timer(unsigned long data) { struct ieee80211_local *local = (void *) data; - if (local->quiescing || local->suspended) - return; - ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work); } @@ -2045,7 +2031,7 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, ieee80211_flush_queues(local, sdata, false); /* clear bssid only after building the needed mgmt frames */ - memset(ifmgd->bssid, 0, ETH_ALEN); + eth_zero_addr(ifmgd->bssid); /* remove AP and TDLS peers */ sta_info_flush(sdata); @@ -2260,7 +2246,7 @@ static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata) else ssid_len = ssid[1]; - ieee80211_send_probe_req(sdata, sdata->vif.addr, NULL, + ieee80211_send_probe_req(sdata, sdata->vif.addr, dst, ssid + 2, ssid_len, NULL, 0, (u32) -1, true, 0, ifmgd->associated->channel, false); @@ -2372,6 +2358,24 @@ struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw, } EXPORT_SYMBOL(ieee80211_ap_probereq_get); +static void ieee80211_report_disconnect(struct ieee80211_sub_if_data *sdata, + const u8 *buf, size_t len, bool tx, + u16 reason) +{ + struct ieee80211_event event = { + .type = MLME_EVENT, + .u.mlme.data = tx ? DEAUTH_TX_EVENT : DEAUTH_RX_EVENT, + .u.mlme.reason = reason, + }; + + if (tx) + cfg80211_tx_mlme_mgmt(sdata->dev, buf, len); + else + cfg80211_rx_mlme_mgmt(sdata->dev, buf, len); + + drv_event_callback(sdata->local, sdata, &event); +} + static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata) { struct ieee80211_local *local = sdata->local; @@ -2397,8 +2401,9 @@ static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata) } mutex_unlock(&local->mtx); - cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, - IEEE80211_DEAUTH_FRAME_LEN); + ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true, + WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY); + sdata_unlock(sdata); } @@ -2477,7 +2482,7 @@ static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata, del_timer_sync(&sdata->u.mgd.timer); sta_info_destroy_addr(sdata, auth_data->bss->bssid); - memset(sdata->u.mgd.bssid, 0, ETH_ALEN); + eth_zero_addr(sdata->u.mgd.bssid); ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); sdata->u.mgd.flags = 0; mutex_lock(&sdata->local->mtx); @@ -2522,6 +2527,10 @@ static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, u8 bssid[ETH_ALEN]; u16 auth_alg, auth_transaction, status_code; struct sta_info *sta; + struct ieee80211_event event = { + .type = MLME_EVENT, + .u.mlme.data = AUTH_EVENT, + }; sdata_assert_lock(sdata); @@ -2554,6 +2563,9 @@ static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, mgmt->sa, status_code); ieee80211_destroy_auth_data(sdata, false); cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); + event.u.mlme.status = MLME_DENIED; + event.u.mlme.reason = status_code; + drv_event_callback(sdata->local, sdata, &event); return; } @@ -2576,6 +2588,8 @@ static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, return; } + event.u.mlme.status = MLME_SUCCESS; + drv_event_callback(sdata->local, sdata, &event); sdata_info(sdata, "authenticated\n"); ifmgd->auth_data->done = true; ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC; @@ -2694,7 +2708,7 @@ static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, ieee80211_set_disassoc(sdata, 0, 0, false, NULL); - cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); + ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false, reason_code); } @@ -2720,7 +2734,7 @@ static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, ieee80211_set_disassoc(sdata, 0, 0, false, NULL); - cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); + ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false, reason_code); } static void ieee80211_get_rates(struct ieee80211_supported_band *sband, @@ -2790,7 +2804,7 @@ static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata, del_timer_sync(&sdata->u.mgd.timer); sta_info_destroy_addr(sdata, assoc_data->bss->bssid); - memset(sdata->u.mgd.bssid, 0, ETH_ALEN); + eth_zero_addr(sdata->u.mgd.bssid); ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); sdata->u.mgd.flags = 0; mutex_lock(&sdata->local->mtx); @@ -2982,10 +2996,14 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata, rate_control_rate_init(sta); - if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) + if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) { set_sta_flag(sta, WLAN_STA_MFP); + sta->sta.mfp = true; + } else { + sta->sta.mfp = false; + } - sta->sta.wme = elems.wmm_param; + sta->sta.wme = elems.wmm_param && local->hw.queues >= IEEE80211_NUM_ACS; err = sta_info_move_state(sta, IEEE80211_STA_ASSOC); if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT)) @@ -3055,6 +3073,10 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, u8 *pos; bool reassoc; struct cfg80211_bss *bss; + struct ieee80211_event event = { + .type = MLME_EVENT, + .u.mlme.data = ASSOC_EVENT, + }; sdata_assert_lock(sdata); @@ -3106,6 +3128,9 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, sdata_info(sdata, "%pM denied association (code=%d)\n", mgmt->sa, status_code); ieee80211_destroy_assoc_data(sdata, false); + event.u.mlme.status = MLME_DENIED; + event.u.mlme.reason = status_code; + drv_event_callback(sdata->local, sdata, &event); } else { if (!ieee80211_assoc_success(sdata, bss, mgmt, len)) { /* oops -- internal error -- send timeout for now */ @@ -3113,6 +3138,8 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, cfg80211_assoc_timeout(sdata->dev, bss); return; } + event.u.mlme.status = MLME_SUCCESS; + drv_event_callback(sdata->local, sdata, &event); sdata_info(sdata, "associated\n"); /* @@ -3315,6 +3342,9 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) { int sig = ifmgd->ave_beacon_signal; int last_sig = ifmgd->last_ave_beacon_signal; + struct ieee80211_event event = { + .type = RSSI_EVENT, + }; /* * if signal crosses either of the boundaries, invoke callback @@ -3323,12 +3353,14 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, if (sig > ifmgd->rssi_max_thold && (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) { ifmgd->last_ave_beacon_signal = sig; - drv_rssi_callback(local, sdata, RSSI_EVENT_HIGH); + event.u.rssi.data = RSSI_EVENT_HIGH; + drv_event_callback(local, sdata, &event); } else if (sig < ifmgd->rssi_min_thold && (last_sig >= ifmgd->rssi_max_thold || last_sig == 0)) { ifmgd->last_ave_beacon_signal = sig; - drv_rssi_callback(local, sdata, RSSI_EVENT_LOW); + event.u.rssi.data = RSSI_EVENT_LOW; + drv_event_callback(local, sdata, &event); } } @@ -3433,6 +3465,26 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, if (ifmgd->csa_waiting_bcn) ieee80211_chswitch_post_beacon(sdata); + /* + * Update beacon timing and dtim count on every beacon appearance. This + * will allow the driver to use the most updated values. Do it before + * comparing this one with last received beacon. + * IMPORTANT: These parameters would possibly be out of sync by the time + * the driver will use them. The synchronized view is currently + * guaranteed only in certain callbacks. + */ + if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) { + sdata->vif.bss_conf.sync_tsf = + le64_to_cpu(mgmt->u.beacon.timestamp); + sdata->vif.bss_conf.sync_device_ts = + rx_status->device_timestamp; + if (elems.tim) + sdata->vif.bss_conf.sync_dtim_count = + elems.tim->dtim_count; + else + sdata->vif.bss_conf.sync_dtim_count = 0; + } + if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid) return; ifmgd->beacon_crc = ncrc; @@ -3460,18 +3512,6 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, else bss_conf->dtim_period = 1; - if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) { - sdata->vif.bss_conf.sync_tsf = - le64_to_cpu(mgmt->u.beacon.timestamp); - sdata->vif.bss_conf.sync_device_ts = - rx_status->device_timestamp; - if (elems.tim) - sdata->vif.bss_conf.sync_dtim_count = - elems.tim->dtim_count; - else - sdata->vif.bss_conf.sync_dtim_count = 0; - } - changed |= BSS_CHANGED_BEACON_INFO; ifmgd->have_beacon = true; @@ -3502,8 +3542,9 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, WLAN_REASON_DEAUTH_LEAVING, true, deauth_buf); - cfg80211_tx_mlme_mgmt(sdata->dev, deauth_buf, - sizeof(deauth_buf)); + ieee80211_report_disconnect(sdata, deauth_buf, + sizeof(deauth_buf), true, + WLAN_REASON_DEAUTH_LEAVING); return; } @@ -3621,8 +3662,8 @@ static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason, tx, frame_buf); - cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, - IEEE80211_DEAUTH_FRAME_LEN); + ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true, + reason); } static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata) @@ -3816,12 +3857,18 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) ieee80211_destroy_auth_data(sdata, false); } else if (ieee80211_probe_auth(sdata)) { u8 bssid[ETH_ALEN]; + struct ieee80211_event event = { + .type = MLME_EVENT, + .u.mlme.data = AUTH_EVENT, + .u.mlme.status = MLME_TIMEOUT, + }; memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN); ieee80211_destroy_auth_data(sdata, false); cfg80211_auth_timeout(sdata->dev, bssid); + drv_event_callback(sdata->local, sdata, &event); } } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started) run_again(sdata, ifmgd->auth_data->timeout); @@ -3831,9 +3878,15 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) if ((ifmgd->assoc_data->need_beacon && !ifmgd->have_beacon) || ieee80211_do_assoc(sdata)) { struct cfg80211_bss *bss = ifmgd->assoc_data->bss; + struct ieee80211_event event = { + .type = MLME_EVENT, + .u.mlme.data = ASSOC_EVENT, + .u.mlme.status = MLME_TIMEOUT, + }; ieee80211_destroy_assoc_data(sdata, false); cfg80211_assoc_timeout(sdata->dev, bss); + drv_event_callback(sdata->local, sdata, &event); } } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started) run_again(sdata, ifmgd->assoc_data->timeout); @@ -3905,12 +3958,8 @@ static void ieee80211_sta_bcn_mon_timer(unsigned long data) { struct ieee80211_sub_if_data *sdata = (struct ieee80211_sub_if_data *) data; - struct ieee80211_local *local = sdata->local; struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; - if (local->quiescing) - return; - if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn) return; @@ -3926,9 +3975,6 @@ static void ieee80211_sta_conn_mon_timer(unsigned long data) struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_local *local = sdata->local; - if (local->quiescing) - return; - if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn) return; @@ -3991,6 +4037,34 @@ void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata) IEEE80211_DEAUTH_FRAME_LEN); } + /* This is a bit of a hack - we should find a better and more generic + * solution to this. Normally when suspending, cfg80211 will in fact + * deauthenticate. However, it doesn't (and cannot) stop an ongoing + * auth (not so important) or assoc (this is the problem) process. + * + * As a consequence, it can happen that we are in the process of both + * associating and suspending, and receive an association response + * after cfg80211 has checked if it needs to disconnect, but before + * we actually set the flag to drop incoming frames. This will then + * cause the workqueue flush to process the association response in + * the suspend, resulting in a successful association just before it + * tries to remove the interface from the driver, which now though + * has a channel context assigned ... this results in issues. + * + * To work around this (for now) simply deauth here again if we're + * now connected. + */ + if (ifmgd->associated && !sdata->local->wowlan) { + u8 bssid[ETH_ALEN]; + struct cfg80211_deauth_request req = { + .reason_code = WLAN_REASON_DEAUTH_LEAVING, + .bssid = bssid, + }; + + memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN); + ieee80211_mgd_deauth(sdata, &req); + } + sdata_unlock(sdata); } @@ -4379,6 +4453,10 @@ static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata, } else WARN_ON_ONCE(!ether_addr_equal(ifmgd->bssid, cbss->bssid)); + /* Cancel scan to ensure that nothing interferes with connection */ + if (local->scanning) + ieee80211_scan_cancel(local); + return 0; } @@ -4467,8 +4545,9 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, WLAN_REASON_UNSPECIFIED, false, frame_buf); - cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, - sizeof(frame_buf)); + ieee80211_report_disconnect(sdata, frame_buf, + sizeof(frame_buf), true, + WLAN_REASON_UNSPECIFIED); } sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid); @@ -4488,7 +4567,7 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, return 0; err_clear: - memset(ifmgd->bssid, 0, ETH_ALEN); + eth_zero_addr(ifmgd->bssid); ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); ifmgd->auth_data = NULL; err_free: @@ -4568,8 +4647,9 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, WLAN_REASON_UNSPECIFIED, false, frame_buf); - cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, - sizeof(frame_buf)); + ieee80211_report_disconnect(sdata, frame_buf, + sizeof(frame_buf), true, + WLAN_REASON_UNSPECIFIED); } if (ifmgd->auth_data && !ifmgd->auth_data->done) { @@ -4831,7 +4911,7 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, return 0; err_clear: - memset(ifmgd->bssid, 0, ETH_ALEN); + eth_zero_addr(ifmgd->bssid); ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); ifmgd->assoc_data = NULL; err_free: @@ -4859,8 +4939,9 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, req->reason_code, tx, frame_buf); ieee80211_destroy_auth_data(sdata, false); - cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, - IEEE80211_DEAUTH_FRAME_LEN); + ieee80211_report_disconnect(sdata, frame_buf, + sizeof(frame_buf), true, + req->reason_code); return 0; } @@ -4874,8 +4955,9 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, req->reason_code, tx, frame_buf); - cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, - IEEE80211_DEAUTH_FRAME_LEN); + ieee80211_report_disconnect(sdata, frame_buf, + sizeof(frame_buf), true, + req->reason_code); return 0; } @@ -4907,8 +4989,8 @@ int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, req->reason_code, !req->local_state_change, frame_buf); - cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, - IEEE80211_DEAUTH_FRAME_LEN); + ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true, + req->reason_code); return 0; } |