From patchwork Mon Aug 28 12:00:05 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Berg X-Patchwork-Id: 719440 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 95419C83F27 for ; Mon, 28 Aug 2023 12:06:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232642AbjH1MG2 (ORCPT ); Mon, 28 Aug 2023 08:06:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40052 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232629AbjH1MF4 (ORCPT ); Mon, 28 Aug 2023 08:05:56 -0400 Received: from sipsolutions.net (s3.sipsolutions.net [IPv6:2a01:4f8:242:246e::2]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E1F91126 for ; Mon, 28 Aug 2023 05:05:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sipsolutions.net; s=mail; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Content-Type:Sender :Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-To: Resent-Cc:Resent-Message-ID; bh=ctWzxvxE6vl+NWiA237yLTwpTxvhaFmRvr+XBAmfiZk=; t=1693224350; x=1694433950; b=Z1CoXrcE82r+fIcyCwizZ+ES67gVSQ+EykbCpA5m2gzQ6BG y5hOn/BxZxOcRd51BznTuAFjT3CuAMV1YBLV8A/mZKt+mMpWKGyYLu5jEVQag+JhSnKAVjO5z0Rz3 ztLHNw/DXtuYhXR2iNb+DpSs6eurlfUQbSbBS85oieRsRmroju1BkcdygSYzHIEy8yW9EQ194CLMx BKB8wUGY+sgvdWY7JS8lTOKNNKoGny/4HDQXujgYia93oORXCNdH4zIuPdPXXw2utY4TpLO6t6DNv FqrfNMFim0socFYHVFKbl0ahMJ4TAgxRg7KFrdwpBxwQ4AFV94Ga6+xEETi2i29Q==; Received: by sipsolutions.net with esmtpsa (TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim 4.96) (envelope-from ) id 1qab08-00Gjgt-2X; Mon, 28 Aug 2023 14:05:49 +0200 From: Johannes Berg To: linux-wireless@vger.kernel.org Cc: Johannes Berg Subject: [PATCH 37/40] wifi: mac80211: remove local->mtx Date: Mon, 28 Aug 2023 14:00:05 +0200 Message-ID: <20230828135928.b1c6efffe9ad.I4aec875e25abc9ef0b5ad1e70b5747fd483fbd3c@changeid> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230828115927.116700-41-johannes@sipsolutions.net> References: <20230828115927.116700-41-johannes@sipsolutions.net> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Johannes Berg We now hold the wiphy mutex everywhere that we use or needed the local->mtx, so we don't need this mutex any more. Remove it. Most of this change was done automatically with spatch. Signed-off-by: Johannes Berg --- net/mac80211/cfg.c | 72 +++++++++---------------- net/mac80211/chan.c | 23 ++------ net/mac80211/ibss.c | 10 ++-- net/mac80211/ieee80211_i.h | 3 -- net/mac80211/iface.c | 32 +++-------- net/mac80211/link.c | 2 - net/mac80211/main.c | 3 -- net/mac80211/mlme.c | 65 ++++++++-------------- net/mac80211/ocb.c | 8 +-- net/mac80211/offchannel.c | 48 +++++++---------- net/mac80211/scan.c | 107 ++++++++++++++----------------------- net/mac80211/tdls.c | 12 ++--- net/mac80211/tx.c | 8 ++- net/mac80211/util.c | 11 ++-- 14 files changed, 135 insertions(+), 269 deletions(-) diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index a90a6f8475de..9e5c75c03dde 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -887,6 +887,8 @@ static int ieee80211_set_monitor_channel(struct wiphy *wiphy, struct ieee80211_sub_if_data *sdata; int ret = 0; + lockdep_assert_wiphy(local->hw.wiphy); + if (cfg80211_chandef_identical(&local->monitor_chandef, chandef)) return 0; @@ -895,21 +897,17 @@ static int ieee80211_set_monitor_channel(struct wiphy *wiphy, local->monitor_sdata); if (sdata) { sdata_lock(sdata); - mutex_lock(&local->mtx); ieee80211_link_release_channel(&sdata->deflink); ret = ieee80211_link_use_channel(&sdata->deflink, chandef, IEEE80211_CHANCTX_EXCLUSIVE); - mutex_unlock(&local->mtx); sdata_unlock(sdata); } } else { - mutex_lock(&local->mtx); if (local->open_count == local->monitors) { local->_oper_chandef = *chandef; ieee80211_hw_config(local, 0); } - mutex_unlock(&local->mtx); } if (ret == 0) @@ -1252,6 +1250,8 @@ static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, struct ieee80211_link_data *link; struct ieee80211_bss_conf *link_conf; + lockdep_assert_wiphy(local->hw.wiphy); + link = sdata_dereference(sdata->link[link_id], sdata); if (!link) return -ENOLINK; @@ -1361,12 +1361,10 @@ static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, return err; } - mutex_lock(&local->mtx); err = ieee80211_link_use_channel(link, ¶ms->chandef, IEEE80211_CHANCTX_SHARED); if (!err) ieee80211_link_copy_chanctx_to_vlans(link, false); - mutex_unlock(&local->mtx); if (err) { link_conf->beacon_int = prev_beacon_int; return err; @@ -1477,9 +1475,7 @@ static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, return 0; error: - mutex_lock(&local->mtx); ieee80211_link_release_channel(link); - mutex_unlock(&local->mtx); return err; } @@ -1554,6 +1550,7 @@ static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev, struct ieee80211_bss_conf *link_conf = link->conf; sdata_assert_lock(sdata); + lockdep_assert_wiphy(local->hw.wiphy); old_beacon = sdata_dereference(link->u.ap.beacon, sdata); if (!old_beacon) @@ -1567,7 +1564,6 @@ static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev, sdata); /* abort any running channel switch or color change */ - mutex_lock(&local->mtx); link_conf->csa_active = false; link_conf->color_change_active = false; if (link->csa_block_tx) { @@ -1576,8 +1572,6 @@ static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev, link->csa_block_tx = false; } - mutex_unlock(&local->mtx); - ieee80211_free_next_beacon(link); /* turn off carrier for this interface and dependent VLANs */ @@ -1632,10 +1626,8 @@ static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev, local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf); ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf); - mutex_lock(&local->mtx); ieee80211_link_copy_chanctx_to_vlans(link, true); ieee80211_link_release_channel(link); - mutex_unlock(&local->mtx); return 0; } @@ -2601,6 +2593,8 @@ static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; int err; + lockdep_assert_wiphy(sdata->local->hw.wiphy); + memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); err = copy_mesh_setup(ifmsh, setup); if (err) @@ -2612,10 +2606,8 @@ static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, sdata->deflink.smps_mode = IEEE80211_SMPS_OFF; sdata->deflink.needed_rx_chains = sdata->local->rx_chains; - mutex_lock(&sdata->local->mtx); err = ieee80211_link_use_channel(&sdata->deflink, &setup->chandef, IEEE80211_CHANCTX_SHARED); - mutex_unlock(&sdata->local->mtx); if (err) return err; @@ -2626,11 +2618,11 @@ static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + lockdep_assert_wiphy(sdata->local->hw.wiphy); + ieee80211_stop_mesh(sdata); - mutex_lock(&sdata->local->mtx); ieee80211_link_release_channel(&sdata->deflink); kfree(sdata->u.mesh.ie); - mutex_unlock(&sdata->local->mtx); return 0; } @@ -3373,7 +3365,8 @@ static int ieee80211_start_radar_detection(struct wiphy *wiphy, struct ieee80211_local *local = sdata->local; int err; - mutex_lock(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); + if (!list_empty(&local->roc_list) || local->scanning) { err = -EBUSY; goto out_unlock; @@ -3392,7 +3385,6 @@ static int ieee80211_start_radar_detection(struct wiphy *wiphy, msecs_to_jiffies(cac_time_ms)); out_unlock: - mutex_unlock(&local->mtx); return err; } @@ -3402,7 +3394,8 @@ static void ieee80211_end_cac(struct wiphy *wiphy, struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; - mutex_lock(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); + list_for_each_entry(sdata, &local->interfaces, list) { /* it might be waiting for the local->mtx, but then * by the time it gets it, sdata->wdev.cac_started @@ -3416,7 +3409,6 @@ static void ieee80211_end_cac(struct wiphy *wiphy, sdata->wdev.cac_started = false; } } - mutex_unlock(&local->mtx); } static struct cfg80211_beacon_data * @@ -3615,7 +3607,6 @@ static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) int err; sdata_assert_lock(sdata); - lockdep_assert_held(&local->mtx); lockdep_assert_wiphy(local->hw.wiphy); /* @@ -3688,7 +3679,6 @@ void ieee80211_csa_finalize_work(struct wiphy *wiphy, struct wiphy_work *work) struct ieee80211_local *local = sdata->local; sdata_lock(sdata); - mutex_lock(&local->mtx); lockdep_assert_wiphy(local->hw.wiphy); /* AP might have been stopped while waiting for the lock. */ @@ -3701,7 +3691,6 @@ void ieee80211_csa_finalize_work(struct wiphy *wiphy, struct wiphy_work *work) ieee80211_csa_finalize(sdata); unlock: - mutex_unlock(&local->mtx); sdata_unlock(sdata); } @@ -3859,7 +3848,6 @@ __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, int err; sdata_assert_lock(sdata); - lockdep_assert_held(&local->mtx); lockdep_assert_wiphy(local->hw.wiphy); if (!list_empty(&local->roc_list) || local->scanning) @@ -3959,18 +3947,15 @@ int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; - int err; - mutex_lock(&local->mtx); - err = __ieee80211_channel_switch(wiphy, dev, params); - mutex_unlock(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); - return err; + return __ieee80211_channel_switch(wiphy, dev, params); } u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local) { - lockdep_assert_held(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); local->roc_cookie_counter++; @@ -4099,7 +4084,7 @@ static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, int ret; /* the lock is needed to assign the cookie later */ - mutex_lock(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); rcu_read_lock(); sta = sta_info_get_bss(sdata, peer); @@ -4170,7 +4155,6 @@ static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, ret = 0; unlock: rcu_read_unlock(); - mutex_unlock(&local->mtx); return ret; } @@ -4679,7 +4663,7 @@ static int ieee80211_color_change_finalize(struct ieee80211_sub_if_data *sdata) int err; sdata_assert_lock(sdata); - lockdep_assert_held(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); sdata->vif.bss_conf.color_change_active = false; @@ -4706,7 +4690,7 @@ void ieee80211_color_change_finalize_work(struct wiphy *wiphy, struct ieee80211_local *local = sdata->local; sdata_lock(sdata); - mutex_lock(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); /* AP might have been stopped while waiting for the lock. */ if (!sdata->vif.bss_conf.color_change_active) @@ -4718,7 +4702,6 @@ void ieee80211_color_change_finalize_work(struct wiphy *wiphy, ieee80211_color_change_finalize(sdata); unlock: - mutex_unlock(&local->mtx); sdata_unlock(sdata); } @@ -4777,12 +4760,11 @@ ieee80211_color_change(struct wiphy *wiphy, struct net_device *dev, int err; sdata_assert_lock(sdata); + lockdep_assert_wiphy(local->hw.wiphy); if (sdata->vif.bss_conf.nontransmitted) return -EINVAL; - mutex_lock(&local->mtx); - /* don't allow another color change if one is already active or if csa * is active */ @@ -4807,7 +4789,6 @@ ieee80211_color_change(struct wiphy *wiphy, struct net_device *dev, ieee80211_color_change_finalize(sdata); out: - mutex_unlock(&local->mtx); return err; } @@ -4829,16 +4810,13 @@ static int ieee80211_add_intf_link(struct wiphy *wiphy, unsigned int link_id) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); - int res; + + lockdep_assert_wiphy(sdata->local->hw.wiphy); if (wdev->use_4addr) return -EOPNOTSUPP; - mutex_lock(&sdata->local->mtx); - res = ieee80211_vif_set_links(sdata, wdev->valid_links, 0); - mutex_unlock(&sdata->local->mtx); - - return res; + return ieee80211_vif_set_links(sdata, wdev->valid_links, 0); } static void ieee80211_del_intf_link(struct wiphy *wiphy, @@ -4847,9 +4825,9 @@ static void ieee80211_del_intf_link(struct wiphy *wiphy, { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); - mutex_lock(&sdata->local->mtx); + lockdep_assert_wiphy(sdata->local->hw.wiphy); + ieee80211_vif_set_links(sdata, wdev->valid_links, 0); - mutex_unlock(&sdata->local->mtx); } static int sta_add_link_station(struct ieee80211_local *local, diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c index 31720c654b83..1d928f29ad6f 100644 --- a/net/mac80211/chan.c +++ b/net/mac80211/chan.c @@ -573,7 +573,7 @@ bool ieee80211_is_radar_required(struct ieee80211_local *local) { struct ieee80211_sub_if_data *sdata; - lockdep_assert_held(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); rcu_read_lock(); list_for_each_entry_rcu(sdata, &local->interfaces, list) { @@ -604,7 +604,6 @@ ieee80211_chanctx_radar_required(struct ieee80211_local *local, bool required = false; lockdep_assert_wiphy(local->hw.wiphy); - lockdep_assert_held(&local->mtx); rcu_read_lock(); list_for_each_entry_rcu(sdata, &local->interfaces, list) { @@ -666,7 +665,6 @@ static int ieee80211_add_chanctx(struct ieee80211_local *local, u32 changed; int err; - lockdep_assert_held(&local->mtx); lockdep_assert_wiphy(local->hw.wiphy); if (!local->use_chanctx) @@ -699,7 +697,6 @@ ieee80211_new_chanctx(struct ieee80211_local *local, struct ieee80211_chanctx *ctx; int err; - lockdep_assert_held(&local->mtx); lockdep_assert_wiphy(local->hw.wiphy); ctx = ieee80211_alloc_chanctx(local, chandef, mode); @@ -835,8 +832,6 @@ static void ieee80211_recalc_radar_chanctx(struct ieee80211_local *local, bool radar_enabled; lockdep_assert_wiphy(local->hw.wiphy); - /* for ieee80211_is_radar_required */ - lockdep_assert_held(&local->mtx); radar_enabled = ieee80211_chanctx_radar_required(local, chanctx); @@ -1024,7 +1019,7 @@ __ieee80211_link_copy_chanctx_to_vlans(struct ieee80211_link_data *link, if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_AP)) return; - lockdep_assert_held(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); /* Check that conf exists, even when clearing this function * must be called with the AP's channel context still there @@ -1264,7 +1259,6 @@ ieee80211_link_use_reserved_reassign(struct ieee80211_link_data *link) u64 changed = 0; int err; - lockdep_assert_held(&local->mtx); lockdep_assert_wiphy(local->hw.wiphy); new_ctx = link->reserved_chanctx; @@ -1414,7 +1408,6 @@ static int ieee80211_chsw_switch_hwconf(struct ieee80211_local *local, { const struct cfg80211_chan_def *chandef; - lockdep_assert_held(&local->mtx); lockdep_assert_wiphy(local->hw.wiphy); chandef = ieee80211_chanctx_reserved_chandef(local, new_ctx, NULL); @@ -1436,7 +1429,6 @@ static int ieee80211_chsw_switch_vifs(struct ieee80211_local *local, struct ieee80211_chanctx *ctx, *old_ctx; int i, err; - lockdep_assert_held(&local->mtx); lockdep_assert_wiphy(local->hw.wiphy); vif_chsw = kcalloc(n_vifs, sizeof(vif_chsw[0]), GFP_KERNEL); @@ -1481,7 +1473,6 @@ static int ieee80211_chsw_switch_ctxs(struct ieee80211_local *local) struct ieee80211_chanctx *ctx; int err; - lockdep_assert_held(&local->mtx); lockdep_assert_wiphy(local->hw.wiphy); list_for_each_entry(ctx, &local->chanctx_list, list) { @@ -1522,7 +1513,6 @@ static int ieee80211_vif_use_reserved_switch(struct ieee80211_local *local) int err, n_assigned, n_reserved, n_ready; int n_ctx = 0, n_vifs_switch = 0, n_vifs_assign = 0, n_vifs_ctxless = 0; - lockdep_assert_held(&local->mtx); lockdep_assert_wiphy(local->hw.wiphy); /* @@ -1820,7 +1810,7 @@ int ieee80211_link_use_channel(struct ieee80211_link_data *link, u8 radar_detect_width = 0; int ret; - lockdep_assert_held(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); if (sdata->vif.active_links && !(sdata->vif.active_links & BIT(link->link_id))) { @@ -1828,8 +1818,6 @@ int ieee80211_link_use_channel(struct ieee80211_link_data *link, return 0; } - lockdep_assert_wiphy(local->hw.wiphy); - ret = cfg80211_chandef_dfs_required(local->hw.wiphy, chandef, sdata->wdev.iftype); @@ -1882,7 +1870,6 @@ int ieee80211_link_use_reserved_context(struct ieee80211_link_data *link) struct ieee80211_chanctx *old_ctx; int err; - lockdep_assert_held(&local->mtx); lockdep_assert_wiphy(local->hw.wiphy); new_ctx = link->reserved_chanctx; @@ -2002,10 +1989,8 @@ void ieee80211_link_release_channel(struct ieee80211_link_data *link) lockdep_assert_wiphy(sdata->local->hw.wiphy); - if (rcu_access_pointer(link->conf->chanctx_conf)) { - lockdep_assert_held(&sdata->local->mtx); + if (rcu_access_pointer(link->conf->chanctx_conf)) __ieee80211_link_release_channel(link); - } } void ieee80211_link_vlan_copy_chanctx(struct ieee80211_link_data *link) diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c index bbda2764fa02..3c6370377234 100644 --- a/net/mac80211/ibss.c +++ b/net/mac80211/ibss.c @@ -236,6 +236,7 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, int err; sdata_assert_lock(sdata); + lockdep_assert_wiphy(local->hw.wiphy); /* Reset own TSF to allow time synchronization work. */ drv_reset_tsf(local, sdata); @@ -299,17 +300,14 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, radar_required = err; - mutex_lock(&local->mtx); if (ieee80211_link_use_channel(&sdata->deflink, &chandef, ifibss->fixed_channel ? IEEE80211_CHANCTX_SHARED : IEEE80211_CHANCTX_EXCLUSIVE)) { sdata_info(sdata, "Failed to join IBSS, no channel context\n"); - mutex_unlock(&local->mtx); return; } sdata->deflink.radar_required = radar_required; - mutex_unlock(&local->mtx); memcpy(ifibss->bssid, bssid, ETH_ALEN); @@ -367,9 +365,7 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, sdata->vif.cfg.ssid_len = 0; RCU_INIT_POINTER(ifibss->presp, NULL); kfree_rcu(presp, rcu_head); - mutex_lock(&local->mtx); ieee80211_link_release_channel(&sdata->deflink); - mutex_unlock(&local->mtx); sdata_info(sdata, "Failed to join IBSS, driver failure: %d\n", err); return; @@ -680,6 +676,8 @@ static void ieee80211_ibss_disconnect(struct ieee80211_sub_if_data *sdata) struct beacon_data *presp; struct sta_info *sta; + lockdep_assert_wiphy(local->hw.wiphy); + if (!is_zero_ether_addr(ifibss->bssid)) { cbss = cfg80211_get_bss(local->hw.wiphy, ifibss->chandef.chan, ifibss->bssid, ifibss->ssid, @@ -726,9 +724,7 @@ static void ieee80211_ibss_disconnect(struct ieee80211_sub_if_data *sdata) ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED | BSS_CHANGED_IBSS); drv_leave_ibss(local, sdata); - mutex_lock(&local->mtx); ieee80211_link_release_channel(&sdata->deflink); - mutex_unlock(&local->mtx); } static void ieee80211_csa_connection_drop_work(struct wiphy *wiphy, diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 7a8f950644ff..2d2a4445714e 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -1466,9 +1466,6 @@ struct ieee80211_local { struct list_head mon_list; /* only that are IFF_UP && !cooked */ struct mutex iflist_mtx; - /* mutex for scan and work locking */ - struct mutex mtx; - /* Scanning and BSS list */ unsigned long scanning; struct cfg80211_ssid scan_ssid; diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 97733520d6b3..9724a3d4545b 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -110,7 +110,7 @@ static u32 __ieee80211_recalc_idle(struct ieee80211_local *local, bool working, scanning, active; unsigned int led_trig_start = 0, led_trig_stop = 0; - lockdep_assert_held(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); active = force_active || !list_empty(&local->chanctx_list) || @@ -207,6 +207,8 @@ static int ieee80211_can_powered_addr_change(struct ieee80211_sub_if_data *sdata struct ieee80211_sub_if_data *scan_sdata; int ret = 0; + lockdep_assert_wiphy(local->hw.wiphy); + /* To be the most flexible here we want to only limit changing the * address if the specific interface is doing offchannel work or * scanning. @@ -214,8 +216,6 @@ static int ieee80211_can_powered_addr_change(struct ieee80211_sub_if_data *sdata if (netif_carrier_ok(sdata->dev)) return -EBUSY; - mutex_lock(&local->mtx); - /* First check no ROC work is happening on this iface */ list_for_each_entry(roc, &local->roc_list, list) { if (roc->sdata != sdata) @@ -230,7 +230,7 @@ static int ieee80211_can_powered_addr_change(struct ieee80211_sub_if_data *sdata /* And if this iface is scanning */ if (local->scanning) { scan_sdata = rcu_dereference_protected(local->scan_sdata, - lockdep_is_held(&local->mtx)); + lockdep_is_held(&local->hw.wiphy->mtx)); if (sdata == scan_sdata) ret = -EBUSY; } @@ -247,7 +247,6 @@ static int ieee80211_can_powered_addr_change(struct ieee80211_sub_if_data *sdata } unlock: - mutex_unlock(&local->mtx); return ret; } @@ -464,6 +463,8 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, bool going_do bool cancel_scan; struct cfg80211_nan_func *func; + lockdep_assert_wiphy(local->hw.wiphy); + clear_bit(SDATA_STATE_RUNNING, &sdata->state); synchronize_rcu(); /* flush _ieee80211_wake_txqs() */ @@ -534,7 +535,6 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, bool going_do "destroying interface with valid links 0x%04x\n", sdata->vif.valid_links); - mutex_lock(&local->mtx); sdata->vif.bss_conf.csa_active = false; if (sdata->vif.type == NL80211_IFTYPE_STATION) sdata->deflink.u.mgd.csa_waiting_bcn = false; @@ -543,7 +543,6 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, bool going_do IEEE80211_QUEUE_STOP_REASON_CSA); sdata->deflink.csa_block_tx = false; } - mutex_unlock(&local->mtx); sdata_unlock(sdata); wiphy_work_cancel(local->hw.wiphy, &sdata->deflink.csa_finalize_work); @@ -555,9 +554,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, bool going_do if (sdata->wdev.cac_started) { chandef = sdata->vif.bss_conf.chandef; WARN_ON(local->suspended); - mutex_lock(&local->mtx); ieee80211_link_release_channel(&sdata->deflink); - mutex_unlock(&local->mtx); cfg80211_cac_event(sdata->dev, &chandef, NL80211_RADAR_CAC_ABORTED, GFP_KERNEL); @@ -585,9 +582,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, bool going_do switch (sdata->vif.type) { case NL80211_IFTYPE_AP_VLAN: - mutex_lock(&local->mtx); list_del(&sdata->u.vlan.list); - mutex_unlock(&local->mtx); RCU_INIT_POINTER(sdata->vif.bss_conf.chanctx_conf, NULL); /* see comment in the default case below */ ieee80211_free_keys(sdata, true); @@ -685,9 +680,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, bool going_do if (local->monitors == 0) ieee80211_del_virtual_monitor(local); - mutex_lock(&local->mtx); ieee80211_recalc_idle(local); - mutex_unlock(&local->mtx); if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE)) break; @@ -1169,10 +1162,8 @@ int ieee80211_add_virtual_monitor(struct ieee80211_local *local) mutex_unlock(&local->iflist_mtx); sdata_lock(sdata); - mutex_lock(&local->mtx); ret = ieee80211_link_use_channel(&sdata->deflink, &local->monitor_chandef, IEEE80211_CHANCTX_EXCLUSIVE); - mutex_unlock(&local->mtx); sdata_unlock(sdata); if (ret) { mutex_lock(&local->iflist_mtx); @@ -1217,9 +1208,7 @@ void ieee80211_del_virtual_monitor(struct ieee80211_local *local) synchronize_net(); sdata_lock(sdata); - mutex_lock(&local->mtx); ieee80211_link_release_channel(&sdata->deflink); - mutex_unlock(&local->mtx); sdata_unlock(sdata); drv_remove_interface(local, sdata); @@ -1251,9 +1240,7 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) if (!sdata->bss) return -ENOLINK; - mutex_lock(&local->mtx); list_add(&sdata->u.vlan.list, &sdata->bss->vlans); - mutex_unlock(&local->mtx); master = container_of(sdata->bss, struct ieee80211_sub_if_data, u.ap); @@ -1362,9 +1349,7 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) ieee80211_adjust_monitor_flags(sdata, 1); ieee80211_configure_filter(local); ieee80211_recalc_offload(local); - mutex_lock(&local->mtx); ieee80211_recalc_idle(local); - mutex_unlock(&local->mtx); netif_carrier_on(dev); break; @@ -1469,11 +1454,8 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) drv_stop(local); err_del_bss: sdata->bss = NULL; - if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { - mutex_lock(&local->mtx); + if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) list_del(&sdata->u.vlan.list); - mutex_unlock(&local->mtx); - } /* might already be clear but that doesn't matter */ clear_bit(SDATA_STATE_RUNNING, &sdata->state); return res; diff --git a/net/mac80211/link.c b/net/mac80211/link.c index 226c852fd5ee..80571dcc57f5 100644 --- a/net/mac80211/link.c +++ b/net/mac80211/link.c @@ -457,7 +457,6 @@ int __ieee80211_set_active_links(struct ieee80211_vif *vif, u16 active_links) sdata_assert_lock(sdata); lockdep_assert_wiphy(local->hw.wiphy); - mutex_lock(&local->mtx); old_active = sdata->vif.active_links; if (old_active & active_links) { /* @@ -473,7 +472,6 @@ int __ieee80211_set_active_links(struct ieee80211_vif *vif, u16 active_links) /* otherwise switch directly */ ret = _ieee80211_set_active_links(sdata, active_links); } - mutex_unlock(&local->mtx); return ret; } diff --git a/net/mac80211/main.c b/net/mac80211/main.c index 0f38b5df53b3..411e44239bb9 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -804,8 +804,6 @@ struct ieee80211_hw *ieee80211_alloc_hw_nm(size_t priv_data_len, __hw_addr_init(&local->mc_list); mutex_init(&local->iflist_mtx); - mutex_init(&local->mtx); - spin_lock_init(&local->filter_lock); spin_lock_init(&local->rx_path_lock); spin_lock_init(&local->queue_stop_reason_lock); @@ -1539,7 +1537,6 @@ void ieee80211_free_hw(struct ieee80211_hw *hw) enum nl80211_band band; mutex_destroy(&local->iflist_mtx); - mutex_destroy(&local->mtx); if (local->wiphy_ciphers_allocated) { kfree(local->hw.wiphy->cipher_suites); diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 605407e4b67f..43bf2f409000 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -1690,7 +1690,6 @@ static void ieee80211_chswitch_work(struct wiphy *wiphy, return; sdata_lock(sdata); - mutex_lock(&local->mtx); lockdep_assert_wiphy(local->hw.wiphy); if (!ifmgd->associated) @@ -1743,7 +1742,6 @@ static void ieee80211_chswitch_work(struct wiphy *wiphy, ieee80211_sta_reset_conn_monitor(sdata); out: - mutex_unlock(&local->mtx); sdata_unlock(sdata); } @@ -1817,8 +1815,6 @@ ieee80211_sta_abort_chanswitch(struct ieee80211_link_data *link) if (!local->ops->abort_channel_switch) return; - mutex_lock(&local->mtx); - ieee80211_link_unreserve_chanctx(link); if (link->csa_block_tx) @@ -1828,8 +1824,6 @@ ieee80211_sta_abort_chanswitch(struct ieee80211_link_data *link) link->csa_block_tx = false; link->conf->csa_active = false; - mutex_unlock(&local->mtx); - drv_abort_channel_switch(sdata); } @@ -1875,7 +1869,7 @@ ieee80211_sta_process_chanswitch(struct ieee80211_link_data *link, } if (res < 0) - goto lock_and_drop_connection; + goto drop_connection; if (beacon && link->conf->csa_active && !link->u.mgd.csa_waiting_bcn) { @@ -1897,7 +1891,7 @@ ieee80211_sta_process_chanswitch(struct ieee80211_link_data *link, csa_ie.chandef.chan->center_freq, csa_ie.chandef.width, csa_ie.chandef.center_freq1, csa_ie.chandef.center_freq2); - goto lock_and_drop_connection; + goto drop_connection; } if (!cfg80211_chandef_usable(local->hw.wiphy, &csa_ie.chandef, @@ -1912,7 +1906,7 @@ ieee80211_sta_process_chanswitch(struct ieee80211_link_data *link, csa_ie.chandef.width, csa_ie.chandef.center_freq1, csa_ie.chandef.freq1_offset, csa_ie.chandef.center_freq2); - goto lock_and_drop_connection; + goto drop_connection; } if (cfg80211_chandef_identical(&csa_ie.chandef, @@ -1935,7 +1929,6 @@ ieee80211_sta_process_chanswitch(struct ieee80211_link_data *link, */ ieee80211_teardown_tdls_peers(sdata); - mutex_lock(&local->mtx); conf = rcu_dereference_protected(link->conf->chanctx_conf, lockdep_is_held(&local->hw.wiphy->mtx)); if (!conf) { @@ -1977,7 +1970,6 @@ ieee80211_sta_process_chanswitch(struct ieee80211_link_data *link, if (link->csa_block_tx) ieee80211_stop_vif_queues(local, sdata, IEEE80211_QUEUE_STOP_REASON_CSA); - mutex_unlock(&local->mtx); cfg80211_ch_switch_started_notify(sdata->dev, &csa_ie.chandef, link->link_id, csa_ie.count, @@ -1996,8 +1988,6 @@ ieee80211_sta_process_chanswitch(struct ieee80211_link_data *link, &link->u.mgd.chswitch_work, timeout); return; - lock_and_drop_connection: - mutex_lock(&local->mtx); drop_connection: /* * This is just so that the disconnect flow will know that @@ -2011,7 +2001,6 @@ ieee80211_sta_process_chanswitch(struct ieee80211_link_data *link, wiphy_work_queue(sdata->local->hw.wiphy, &ifmgd->csa_connection_drop_work); - mutex_unlock(&local->mtx); } static bool @@ -2408,14 +2397,14 @@ void ieee80211_dfs_cac_timer_work(struct wiphy *wiphy, struct wiphy_work *work) struct cfg80211_chan_def chandef = link->conf->chandef; struct ieee80211_sub_if_data *sdata = link->sdata; - mutex_lock(&sdata->local->mtx); + lockdep_assert_wiphy(sdata->local->hw.wiphy); + if (sdata->wdev.cac_started) { ieee80211_link_release_channel(link); cfg80211_cac_event(sdata->dev, &chandef, NL80211_RADAR_CAC_FINISHED, GFP_KERNEL); } - mutex_unlock(&sdata->local->mtx); } static bool @@ -2682,7 +2671,7 @@ ieee80211_sta_wmm_params(struct ieee80211_local *local, static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata) { - lockdep_assert_held(&sdata->local->mtx); + lockdep_assert_wiphy(sdata->local->hw.wiphy); sdata->u.mgd.flags &= ~IEEE80211_STA_CONNECTION_POLL; ieee80211_run_deferred_scan(sdata->local); @@ -2690,9 +2679,9 @@ static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata) static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata) { - mutex_lock(&sdata->local->mtx); + lockdep_assert_wiphy(sdata->local->hw.wiphy); + __ieee80211_stop_poll(sdata); - mutex_unlock(&sdata->local->mtx); } static u64 ieee80211_handle_bss_capability(struct ieee80211_link_data *link, @@ -2896,6 +2885,7 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, }; sdata_assert_lock(sdata); + lockdep_assert_wiphy(local->hw.wiphy); if (WARN_ON_ONCE(tx && !frame_buf)) return; @@ -3036,7 +3026,6 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, ifmgd->flags = 0; sdata->deflink.u.mgd.conn_flags = 0; - mutex_lock(&local->mtx); for (link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) { struct ieee80211_link_data *link; @@ -3055,7 +3044,6 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, IEEE80211_QUEUE_STOP_REASON_CSA); sdata->deflink.csa_block_tx = false; } - mutex_unlock(&local->mtx); /* existing TX TSPEC sessions no longer exist */ memset(ifmgd->tx_tspec, 0, sizeof(ifmgd->tx_tspec)); @@ -3074,9 +3062,10 @@ static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata) struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_local *local = sdata->local; - mutex_lock(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); + if (!(ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)) - goto out; + return; __ieee80211_stop_poll(sdata); @@ -3085,7 +3074,7 @@ static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata) mutex_unlock(&local->iflist_mtx); if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR)) - goto out; + return; /* * We've received a probe response, but are not sure whether @@ -3097,8 +3086,6 @@ static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata) mod_timer(&ifmgd->conn_mon_timer, round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME)); -out: - mutex_unlock(&local->mtx); } static void ieee80211_sta_tx_wmm_ac_notify(struct ieee80211_sub_if_data *sdata, @@ -3230,6 +3217,8 @@ static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata, struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; bool already = false; + lockdep_assert_wiphy(sdata->local->hw.wiphy); + if (WARN_ON_ONCE(ieee80211_vif_is_mld(&sdata->vif))) return; @@ -3241,16 +3230,12 @@ static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata, if (!ifmgd->associated) goto out; - mutex_lock(&sdata->local->mtx); - if (sdata->local->tmp_channel || sdata->local->scanning) { - mutex_unlock(&sdata->local->mtx); goto out; } if (sdata->local->suspending) { /* reschedule after resume */ - mutex_unlock(&sdata->local->mtx); ieee80211_reset_ap_probe(sdata); goto out; } @@ -3279,8 +3264,6 @@ static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata, ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL; - mutex_unlock(&sdata->local->mtx); - if (already) goto out; @@ -3363,6 +3346,8 @@ static void ___ieee80211_disconnect(struct ieee80211_sub_if_data *sdata) u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; bool tx; + lockdep_assert_wiphy(local->hw.wiphy); + if (!ifmgd->associated) return; @@ -3398,7 +3383,6 @@ static void ___ieee80211_disconnect(struct ieee80211_sub_if_data *sdata) WLAN_REASON_DEAUTH_LEAVING : WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, tx, frame_buf); - mutex_lock(&local->mtx); /* the other links will be destroyed */ sdata->vif.bss_conf.csa_active = false; sdata->deflink.u.mgd.csa_waiting_bcn = false; @@ -3407,7 +3391,6 @@ static void ___ieee80211_disconnect(struct ieee80211_sub_if_data *sdata) IEEE80211_QUEUE_STOP_REASON_CSA); sdata->deflink.csa_block_tx = false; } - mutex_unlock(&local->mtx); ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), tx, WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, @@ -3504,6 +3487,7 @@ static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata, struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data; sdata_assert_lock(sdata); + lockdep_assert_wiphy(sdata->local->hw.wiphy); if (!assoc) { /* @@ -3521,10 +3505,8 @@ static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata, BSS_CHANGED_BSSID); sdata->u.mgd.flags = 0; - mutex_lock(&sdata->local->mtx); ieee80211_link_release_channel(&sdata->deflink); ieee80211_vif_set_links(sdata, 0, 0); - mutex_unlock(&sdata->local->mtx); } cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss); @@ -3545,6 +3527,7 @@ static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata, struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data; sdata_assert_lock(sdata); + lockdep_assert_wiphy(sdata->local->hw.wiphy); if (status != ASSOC_SUCCESS) { /* @@ -3580,10 +3563,8 @@ static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata, cfg80211_assoc_failure(sdata->dev, &data); } - mutex_lock(&sdata->local->mtx); ieee80211_link_release_channel(&sdata->deflink); ieee80211_vif_set_links(sdata, 0, 0); - mutex_unlock(&sdata->local->mtx); } kfree(assoc_data); @@ -4817,6 +4798,8 @@ static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata, u32 i; bool have_80mhz; + lockdep_assert_wiphy(local->hw.wiphy); + rcu_read_lock(); ies = rcu_dereference(cbss->ies); @@ -5018,7 +5001,6 @@ static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata, /* will change later if needed */ link->smps_mode = IEEE80211_SMPS_OFF; - mutex_lock(&local->mtx); /* * If this fails (possibly due to channel context sharing * on incompatible channels, e.g. 80+80 and 160 sharing the @@ -5039,7 +5021,6 @@ static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata, IEEE80211_CHANCTX_SHARED); } out: - mutex_unlock(&local->mtx); return ret; } @@ -7083,6 +7064,8 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, int err; bool cont_auth; + lockdep_assert_wiphy(sdata->local->hw.wiphy); + /* prepare auth data structure */ switch (req->auth_type) { @@ -7227,9 +7210,7 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, eth_zero_addr(sdata->deflink.u.mgd.bssid); ieee80211_link_info_change_notify(sdata, &sdata->deflink, BSS_CHANGED_BSSID); - mutex_lock(&sdata->local->mtx); ieee80211_link_release_channel(&sdata->deflink); - mutex_unlock(&sdata->local->mtx); } ifmgd->auth_data = NULL; kfree(auth_data); diff --git a/net/mac80211/ocb.c b/net/mac80211/ocb.c index b44896e14522..7661e96454b2 100644 --- a/net/mac80211/ocb.c +++ b/net/mac80211/ocb.c @@ -178,6 +178,8 @@ int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, u64 changed = BSS_CHANGED_OCB | BSS_CHANGED_BSSID; int err; + lockdep_assert_wiphy(sdata->local->hw.wiphy); + if (ifocb->joined == true) return -EINVAL; @@ -185,10 +187,8 @@ int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, sdata->deflink.smps_mode = IEEE80211_SMPS_OFF; sdata->deflink.needed_rx_chains = sdata->local->rx_chains; - mutex_lock(&sdata->local->mtx); err = ieee80211_link_use_channel(&sdata->deflink, &setup->chandef, IEEE80211_CHANCTX_SHARED); - mutex_unlock(&sdata->local->mtx); if (err) return err; @@ -209,6 +209,8 @@ int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata) struct ieee80211_local *local = sdata->local; struct sta_info *sta; + lockdep_assert_wiphy(sdata->local->hw.wiphy); + ifocb->joined = false; sta_info_flush(sdata); @@ -228,9 +230,7 @@ int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata) clear_bit(SDATA_STATE_OFFCHANNEL, &sdata->state); ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_OCB); - mutex_lock(&sdata->local->mtx); ieee80211_link_release_channel(&sdata->deflink); - mutex_unlock(&sdata->local->mtx); skb_queue_purge(&sdata->skb_queue); diff --git a/net/mac80211/offchannel.c b/net/mac80211/offchannel.c index df68d9838f87..0e7e7561d0eb 100644 --- a/net/mac80211/offchannel.c +++ b/net/mac80211/offchannel.c @@ -197,7 +197,7 @@ static unsigned long ieee80211_end_finished_rocs(struct ieee80211_local *local, struct ieee80211_roc_work *roc, *tmp; long remaining_dur_min = LONG_MAX; - lockdep_assert_held(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); list_for_each_entry_safe(roc, tmp, &local->roc_list, list) { long remaining; @@ -264,7 +264,7 @@ static void ieee80211_hw_roc_start(struct wiphy *wiphy, struct wiphy_work *work) container_of(work, struct ieee80211_local, hw_roc_start); struct ieee80211_roc_work *roc; - mutex_lock(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); list_for_each_entry(roc, &local->roc_list, list) { if (!roc->started) @@ -273,8 +273,6 @@ static void ieee80211_hw_roc_start(struct wiphy *wiphy, struct wiphy_work *work) roc->hw_begun = true; ieee80211_handle_roc_started(roc, local->hw_roc_start_time); } - - mutex_unlock(&local->mtx); } void ieee80211_ready_on_channel(struct ieee80211_hw *hw) @@ -295,7 +293,7 @@ static void _ieee80211_start_next_roc(struct ieee80211_local *local) enum ieee80211_roc_type type; u32 min_dur, max_dur; - lockdep_assert_held(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); if (WARN_ON(list_empty(&local->roc_list))) return; @@ -386,7 +384,7 @@ void ieee80211_start_next_roc(struct ieee80211_local *local) { struct ieee80211_roc_work *roc; - lockdep_assert_held(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); if (list_empty(&local->roc_list)) { ieee80211_run_deferred_scan(local); @@ -417,7 +415,7 @@ static void __ieee80211_roc_work(struct ieee80211_local *local) struct ieee80211_roc_work *roc; bool on_channel; - lockdep_assert_held(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); if (WARN_ON(local->ops->remain_on_channel)) return; @@ -456,9 +454,9 @@ static void ieee80211_roc_work(struct wiphy *wiphy, struct wiphy_work *work) struct ieee80211_local *local = container_of(work, struct ieee80211_local, roc_work.work); - mutex_lock(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); + __ieee80211_roc_work(local); - mutex_unlock(&local->mtx); } static void ieee80211_hw_roc_done(struct wiphy *wiphy, struct wiphy_work *work) @@ -466,14 +464,12 @@ static void ieee80211_hw_roc_done(struct wiphy *wiphy, struct wiphy_work *work) struct ieee80211_local *local = container_of(work, struct ieee80211_local, hw_roc_done); - mutex_lock(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); ieee80211_end_finished_rocs(local, jiffies); /* if there's another roc, start it now */ ieee80211_start_next_roc(local); - - mutex_unlock(&local->mtx); } void ieee80211_remain_on_channel_expired(struct ieee80211_hw *hw) @@ -537,7 +533,7 @@ static int ieee80211_start_roc_work(struct ieee80211_local *local, bool queued = false, combine_started = true; int ret; - lockdep_assert_held(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); if (channel->freq_offset) /* this may work, but is untested */ @@ -675,15 +671,12 @@ int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); struct ieee80211_local *local = sdata->local; - int ret; - mutex_lock(&local->mtx); - ret = ieee80211_start_roc_work(local, sdata, chan, - duration, cookie, NULL, - IEEE80211_ROC_TYPE_NORMAL); - mutex_unlock(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); - return ret; + return ieee80211_start_roc_work(local, sdata, chan, + duration, cookie, NULL, + IEEE80211_ROC_TYPE_NORMAL); } static int ieee80211_cancel_roc(struct ieee80211_local *local, @@ -692,12 +685,13 @@ static int ieee80211_cancel_roc(struct ieee80211_local *local, struct ieee80211_roc_work *roc, *tmp, *found = NULL; int ret; + lockdep_assert_wiphy(local->hw.wiphy); + if (!cookie) return -ENOENT; wiphy_work_flush(local->hw.wiphy, &local->hw_roc_start); - mutex_lock(&local->mtx); list_for_each_entry_safe(roc, tmp, &local->roc_list, list) { if (!mgmt_tx && roc->cookie != cookie) continue; @@ -709,7 +703,6 @@ static int ieee80211_cancel_roc(struct ieee80211_local *local, } if (!found) { - mutex_unlock(&local->mtx); return -ENOENT; } @@ -721,7 +714,6 @@ static int ieee80211_cancel_roc(struct ieee80211_local *local, if (local->ops->remain_on_channel) { ret = drv_cancel_remain_on_channel(local, roc->sdata); if (WARN_ON_ONCE(ret)) { - mutex_unlock(&local->mtx); return ret; } @@ -749,7 +741,6 @@ static int ieee80211_cancel_roc(struct ieee80211_local *local, } out_unlock: - mutex_unlock(&local->mtx); return 0; } @@ -778,6 +769,8 @@ int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, int ret; u8 *data; + lockdep_assert_wiphy(local->hw.wiphy); + if (params->dont_wait_for_ack) flags = IEEE80211_TX_CTL_NO_ACK; else @@ -855,8 +848,6 @@ int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, if (need_offchan && !params->chan) return -EINVAL; - mutex_lock(&local->mtx); - /* Check if the operating channel is the requested channel */ if (!params->chan && mlo_sta) { need_offchan = false; @@ -980,7 +971,6 @@ int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, if (ret) ieee80211_free_txskb(&local->hw, skb); out_unlock: - mutex_unlock(&local->mtx); return ret; } @@ -1006,7 +996,8 @@ void ieee80211_roc_purge(struct ieee80211_local *local, struct ieee80211_roc_work *roc, *tmp; bool work_to_do = false; - mutex_lock(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); + list_for_each_entry_safe(roc, tmp, &local->roc_list, list) { if (sdata && roc->sdata != sdata) continue; @@ -1026,5 +1017,4 @@ void ieee80211_roc_purge(struct ieee80211_local *local, } if (work_to_do) __ieee80211_roc_work(local); - mutex_unlock(&local->mtx); } diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c index 68ec2124c3db..0ea86a418eda 100644 --- a/net/mac80211/scan.c +++ b/net/mac80211/scan.c @@ -344,7 +344,7 @@ static bool ieee80211_prep_hw_scan(struct ieee80211_sub_if_data *sdata) u32 flags = 0; req = rcu_dereference_protected(local->scan_req, - lockdep_is_held(&local->mtx)); + lockdep_is_held(&local->hw.wiphy->mtx)); if (test_bit(SCAN_HW_CANCELLED, &local->scanning)) return false; @@ -409,7 +409,7 @@ static void __ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted) struct ieee80211_sub_if_data *scan_sdata; struct ieee80211_sub_if_data *sdata; - lockdep_assert_held(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); /* * It's ok to abort a not-yet-running scan (that @@ -424,7 +424,7 @@ static void __ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted) return; scan_sdata = rcu_dereference_protected(local->scan_sdata, - lockdep_is_held(&local->mtx)); + lockdep_is_held(&local->hw.wiphy->mtx)); if (hw_scan && !aborted && !ieee80211_hw_check(&local->hw, SINGLE_SCAN_ON_ALL_BANDS) && @@ -433,7 +433,7 @@ static void __ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted) rc = drv_hw_scan(local, rcu_dereference_protected(local->scan_sdata, - lockdep_is_held(&local->mtx)), + lockdep_is_held(&local->hw.wiphy->mtx)), local->hw_scan_req); if (rc == 0) @@ -450,7 +450,7 @@ static void __ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted) local->hw_scan_req = NULL; scan_req = rcu_dereference_protected(local->scan_req, - lockdep_is_held(&local->mtx)); + lockdep_is_held(&local->hw.wiphy->mtx)); RCU_INIT_POINTER(local->scan_req, NULL); RCU_INIT_POINTER(local->scan_sdata, NULL); @@ -591,7 +591,7 @@ static bool ieee80211_can_scan(struct ieee80211_local *local, void ieee80211_run_deferred_scan(struct ieee80211_local *local) { - lockdep_assert_held(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); if (!local->scan_req || local->scanning) return; @@ -599,7 +599,7 @@ void ieee80211_run_deferred_scan(struct ieee80211_local *local) if (!ieee80211_can_scan(local, rcu_dereference_protected( local->scan_sdata, - lockdep_is_held(&local->mtx)))) + lockdep_is_held(&local->hw.wiphy->mtx)))) return; wiphy_delayed_work_queue(local->hw.wiphy, &local->scan_work, @@ -644,7 +644,7 @@ static void ieee80211_scan_state_send_probe(struct ieee80211_local *local, u32 flags = 0, tx_flags; scan_req = rcu_dereference_protected(local->scan_req, - lockdep_is_held(&local->mtx)); + lockdep_is_held(&local->hw.wiphy->mtx)); tx_flags = IEEE80211_TX_INTFL_OFFCHAN_TX_OK; if (scan_req->no_cck) @@ -655,7 +655,7 @@ static void ieee80211_scan_state_send_probe(struct ieee80211_local *local, flags |= IEEE80211_PROBE_FLAG_RANDOM_SN; sdata = rcu_dereference_protected(local->scan_sdata, - lockdep_is_held(&local->mtx)); + lockdep_is_held(&local->hw.wiphy->mtx)); for (i = 0; i < scan_req->n_ssids; i++) ieee80211_send_scan_probe_req( @@ -680,7 +680,7 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata, bool hw_scan = local->ops->hw_scan; int rc; - lockdep_assert_held(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); if (local->scan_req) return -EBUSY; @@ -884,7 +884,7 @@ static void ieee80211_scan_state_decision(struct ieee80211_local *local, mutex_unlock(&local->iflist_mtx); scan_req = rcu_dereference_protected(local->scan_req, - lockdep_is_held(&local->mtx)); + lockdep_is_held(&local->hw.wiphy->mtx)); next_chan = scan_req->channels[local->scan_channel_idx]; @@ -925,7 +925,7 @@ static void ieee80211_scan_state_set_channel(struct ieee80211_local *local, struct cfg80211_scan_request *scan_req; scan_req = rcu_dereference_protected(local->scan_req, - lockdep_is_held(&local->mtx)); + lockdep_is_held(&local->hw.wiphy->mtx)); skip = 0; chan = scan_req->channels[local->scan_channel_idx]; @@ -1051,7 +1051,7 @@ void ieee80211_scan_work(struct wiphy *wiphy, struct wiphy_work *work) unsigned long next_delay = 0; bool aborted; - mutex_lock(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); if (!ieee80211_can_run_worker(local)) { aborted = true; @@ -1059,9 +1059,9 @@ void ieee80211_scan_work(struct wiphy *wiphy, struct wiphy_work *work) } sdata = rcu_dereference_protected(local->scan_sdata, - lockdep_is_held(&local->mtx)); + lockdep_is_held(&local->hw.wiphy->mtx)); scan_req = rcu_dereference_protected(local->scan_req, - lockdep_is_held(&local->mtx)); + lockdep_is_held(&local->hw.wiphy->mtx)); /* When scanning on-channel, the first-callback means completed. */ if (test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning)) { @@ -1075,7 +1075,7 @@ void ieee80211_scan_work(struct wiphy *wiphy, struct wiphy_work *work) } if (!sdata || !scan_req) - goto out; + return; if (!local->scanning) { int rc; @@ -1084,13 +1084,12 @@ void ieee80211_scan_work(struct wiphy *wiphy, struct wiphy_work *work) RCU_INIT_POINTER(local->scan_sdata, NULL); rc = __ieee80211_start_scan(sdata, scan_req); - if (rc) { - /* need to complete scan in cfg80211 */ - rcu_assign_pointer(local->scan_req, scan_req); - aborted = true; - goto out_complete; - } else - goto out; + if (!rc) + return; + /* need to complete scan in cfg80211 */ + rcu_assign_pointer(local->scan_req, scan_req); + aborted = true; + goto out_complete; } clear_bit(SCAN_BEACON_WAIT, &local->scanning); @@ -1138,24 +1137,18 @@ void ieee80211_scan_work(struct wiphy *wiphy, struct wiphy_work *work) wiphy_delayed_work_queue(local->hw.wiphy, &local->scan_work, next_delay); - goto out; + return; out_complete: __ieee80211_scan_completed(&local->hw, aborted); -out: - mutex_unlock(&local->mtx); } int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, struct cfg80211_scan_request *req) { - int res; + lockdep_assert_wiphy(sdata->local->hw.wiphy); - mutex_lock(&sdata->local->mtx); - res = __ieee80211_start_scan(sdata, req); - mutex_unlock(&sdata->local->mtx); - - return res; + return __ieee80211_start_scan(sdata, req); } int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, @@ -1168,7 +1161,7 @@ int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, int ret = -EBUSY, i, n_ch = 0; enum nl80211_band band; - mutex_lock(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); /* busy scanning */ if (local->scan_req) @@ -1225,7 +1218,6 @@ int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, ret = __ieee80211_start_scan(sdata, sdata->local->int_scan_req); unlock: - mutex_unlock(&local->mtx); return ret; } @@ -1252,9 +1244,8 @@ void ieee80211_scan_cancel(struct ieee80211_local *local) * after the scan was completed/aborted. */ - mutex_lock(&local->mtx); if (!local->scan_req) - goto out; + return; /* * We have a scan running and the driver already reported completion, @@ -1264,7 +1255,7 @@ void ieee80211_scan_cancel(struct ieee80211_local *local) if (test_bit(SCAN_HW_SCANNING, &local->scanning) && test_bit(SCAN_COMPLETED, &local->scanning)) { set_bit(SCAN_HW_CANCELLED, &local->scanning); - goto out; + return; } if (test_bit(SCAN_HW_SCANNING, &local->scanning)) { @@ -1276,16 +1267,14 @@ void ieee80211_scan_cancel(struct ieee80211_local *local) if (local->ops->cancel_hw_scan) drv_cancel_hw_scan(local, rcu_dereference_protected(local->scan_sdata, - lockdep_is_held(&local->mtx))); - goto out; + lockdep_is_held(&local->hw.wiphy->mtx))); + return; } wiphy_delayed_work_cancel(local->hw.wiphy, &local->scan_work); /* and clean up */ memset(&local->scan_info, 0, sizeof(local->scan_info)); __ieee80211_scan_completed(&local->hw, true); -out: - mutex_unlock(&local->mtx); } int __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, @@ -1300,10 +1289,10 @@ int __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, u8 *ie; u32 flags = 0; + lockdep_assert_wiphy(local->hw.wiphy); + iebufsz = local->scan_ies_len + req->ie_len; - lockdep_assert_held(&local->mtx); - if (!local->ops->sched_scan_start) return -ENOTSUPP; @@ -1353,19 +1342,13 @@ int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, struct cfg80211_sched_scan_request *req) { struct ieee80211_local *local = sdata->local; - int ret; - mutex_lock(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); - if (rcu_access_pointer(local->sched_scan_sdata)) { - mutex_unlock(&local->mtx); + if (rcu_access_pointer(local->sched_scan_sdata)) return -EBUSY; - } - ret = __ieee80211_request_sched_scan_start(sdata, req); - - mutex_unlock(&local->mtx); - return ret; + return __ieee80211_request_sched_scan_start(sdata, req); } int ieee80211_request_sched_scan_stop(struct ieee80211_local *local) @@ -1373,25 +1356,21 @@ int ieee80211_request_sched_scan_stop(struct ieee80211_local *local) struct ieee80211_sub_if_data *sched_scan_sdata; int ret = -ENOENT; - mutex_lock(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); - if (!local->ops->sched_scan_stop) { - ret = -ENOTSUPP; - goto out; - } + if (!local->ops->sched_scan_stop) + return -ENOTSUPP; /* We don't want to restart sched scan anymore. */ RCU_INIT_POINTER(local->sched_scan_req, NULL); sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata, - lockdep_is_held(&local->mtx)); + lockdep_is_held(&local->hw.wiphy->mtx)); if (sched_scan_sdata) { ret = drv_sched_scan_stop(local, sched_scan_sdata); if (!ret) RCU_INIT_POINTER(local->sched_scan_sdata, NULL); } -out: - mutex_unlock(&local->mtx); return ret; } @@ -1408,20 +1387,16 @@ EXPORT_SYMBOL(ieee80211_sched_scan_results); void ieee80211_sched_scan_end(struct ieee80211_local *local) { - mutex_lock(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); - if (!rcu_access_pointer(local->sched_scan_sdata)) { - mutex_unlock(&local->mtx); + if (!rcu_access_pointer(local->sched_scan_sdata)) return; - } RCU_INIT_POINTER(local->sched_scan_sdata, NULL); /* If sched scan was aborted by the driver. */ RCU_INIT_POINTER(local->sched_scan_req, NULL); - mutex_unlock(&local->mtx); - cfg80211_sched_scan_stopped_locked(local->hw.wiphy, 0); } diff --git a/net/mac80211/tdls.c b/net/mac80211/tdls.c index d6d3123f4e3a..9bcb0c2bba7d 100644 --- a/net/mac80211/tdls.c +++ b/net/mac80211/tdls.c @@ -30,13 +30,13 @@ void ieee80211_tdls_peer_del_work(struct wiphy *wiphy, struct wiphy_work *wk) u.mgd.tdls_peer_del_work.work); local = sdata->local; - mutex_lock(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); + if (!is_zero_ether_addr(sdata->u.mgd.tdls_peer)) { tdls_dbg(sdata, "TDLS del peer %pM\n", sdata->u.mgd.tdls_peer); sta_info_destroy_addr(sdata, sdata->u.mgd.tdls_peer); eth_zero_addr(sdata->u.mgd.tdls_peer); } - mutex_unlock(&local->mtx); } static void ieee80211_tdls_add_ext_capab(struct ieee80211_link_data *link, @@ -1180,7 +1180,7 @@ ieee80211_tdls_mgmt_setup(struct wiphy *wiphy, struct net_device *dev, return -ENOTSUPP; } - mutex_lock(&local->mtx); + lockdep_assert_wiphy(local->hw.wiphy); /* we don't support concurrent TDLS peer setups */ if (!is_zero_ether_addr(sdata->u.mgd.tdls_peer) && @@ -1208,7 +1208,6 @@ ieee80211_tdls_mgmt_setup(struct wiphy *wiphy, struct net_device *dev, ieee80211_flush_queues(local, sdata, false); memcpy(sdata->u.mgd.tdls_peer, peer, ETH_ALEN); - mutex_unlock(&local->mtx); /* we cannot take the mutex while preparing the setup packet */ ret = ieee80211_tdls_prep_mgmt_packet(wiphy, dev, peer, @@ -1218,9 +1217,7 @@ ieee80211_tdls_mgmt_setup(struct wiphy *wiphy, struct net_device *dev, extra_ies, extra_ies_len, 0, NULL); if (ret < 0) { - mutex_lock(&local->mtx); eth_zero_addr(sdata->u.mgd.tdls_peer); - mutex_unlock(&local->mtx); return ret; } @@ -1230,7 +1227,6 @@ ieee80211_tdls_mgmt_setup(struct wiphy *wiphy, struct net_device *dev, return 0; out_unlock: - mutex_unlock(&local->mtx); return ret; } @@ -1470,7 +1466,6 @@ int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, * ieee80211_bss_info_change_notify() */ sdata_lock(sdata); - mutex_lock(&local->mtx); tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer); switch (oper) { @@ -1532,7 +1527,6 @@ int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, wiphy_work_queue(sdata->local->hw.wiphy, &sdata->deflink.u.mgd.request_smps_work); - mutex_unlock(&local->mtx); sdata_unlock(sdata); return ret; } diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 1ff7d2368c32..d30b9f204d1b 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -6109,6 +6109,9 @@ int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev, u32 flags = 0; int err; + /* mutex lock is only needed for incrementing the cookie counter */ + lockdep_assert_wiphy(local->hw.wiphy); + /* Only accept CONTROL_PORT_PROTOCOL configured in CONNECT/ASSOCIATE * or Pre-Authentication */ @@ -6199,15 +6202,10 @@ int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev, rcu_read_unlock(); start_xmit: - /* mutex lock is only needed for incrementing the cookie counter */ - mutex_lock(&local->mtx); - local_bh_disable(); __ieee80211_subif_start_xmit(skb, skb->dev, flags, ctrl_flags, cookie); local_bh_enable(); - mutex_unlock(&local->mtx); - return 0; } diff --git a/net/mac80211/util.c b/net/mac80211/util.c index dce8c2043096..0873c7d60a4d 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -2861,11 +2861,10 @@ int ieee80211_reconfig(struct ieee80211_local *local) ieee80211_reenable_keys(sdata); /* Reconfigure sched scan if it was interrupted by FW restart */ - mutex_lock(&local->mtx); sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata, - lockdep_is_held(&local->mtx)); + lockdep_is_held(&local->hw.wiphy->mtx)); sched_scan_req = rcu_dereference_protected(local->sched_scan_req, - lockdep_is_held(&local->mtx)); + lockdep_is_held(&local->hw.wiphy->mtx)); if (sched_scan_sdata && sched_scan_req) /* * Sched scan stopped, but we don't want to report it. Instead, @@ -2881,7 +2880,6 @@ int ieee80211_reconfig(struct ieee80211_local *local) RCU_INIT_POINTER(local->sched_scan_req, NULL); sched_scan_stopped = true; } - mutex_unlock(&local->mtx); if (sched_scan_stopped) cfg80211_sched_scan_stopped_locked(local->hw.wiphy, 0); @@ -2923,9 +2921,7 @@ int ieee80211_reconfig(struct ieee80211_local *local) barrier(); /* Restart deferred ROCs */ - mutex_lock(&local->mtx); ieee80211_start_next_roc(local); - mutex_unlock(&local->mtx); /* Requeue all works */ list_for_each_entry(sdata, &local->interfaces, list) @@ -4329,7 +4325,6 @@ void ieee80211_dfs_cac_cancel(struct ieee80211_local *local) /* for interface list, to avoid linking iflist_mtx and chanctx_mtx */ lockdep_assert_wiphy(local->hw.wiphy); - mutex_lock(&local->mtx); list_for_each_entry(sdata, &local->interfaces, list) { /* it might be waiting for the local->mtx, but then * by the time it gets it, sdata->wdev.cac_started @@ -4347,7 +4342,6 @@ void ieee80211_dfs_cac_cancel(struct ieee80211_local *local) GFP_KERNEL); } } - mutex_unlock(&local->mtx); } void ieee80211_dfs_radar_detected_work(struct wiphy *wiphy, @@ -4360,6 +4354,7 @@ void ieee80211_dfs_radar_detected_work(struct wiphy *wiphy, int num_chanctx = 0; lockdep_assert_wiphy(local->hw.wiphy); + list_for_each_entry(ctx, &local->chanctx_list, list) { if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER) continue;