From patchwork Wed Jul 13 09:43:48 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Berg X-Patchwork-Id: 590359 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 DA642CCA482 for ; Wed, 13 Jul 2022 09:45:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235940AbiGMJpO (ORCPT ); Wed, 13 Jul 2022 05:45:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35764 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235098AbiGMJpK (ORCPT ); Wed, 13 Jul 2022 05:45:10 -0400 Received: from sipsolutions.net (s3.sipsolutions.net [IPv6:2a01:4f8:191:4433::2]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9B73DBEB6C for ; Wed, 13 Jul 2022 02:45:08 -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=n8SRNHKPwsrGiRMgove15knSSHCRuB3cvIAveckcbvo=; t=1657705508; x=1658915108; b=yDri8ZZsrG5suwcRkzbA4z9ZiSQ1MEUEF3D9bqhApkgqAxR kAwf6afIOPGf2H9U7QWVs+PSzr6Dy/jJiBwXquWeqH52xTz9UZWyQJO+aGeyi5cCR+oIzAX8kb0VY 24lYrnFfELJcF9zhMw2tOwDwQjXQ9huTSgGHBj8vYH0wI7m7umqimrTcm8dOa6wHXe8+px3mdVQMM nAN3eShQW9OKesRsIt+6WXTqGh3d14YNdt6fl3oQoGPTz3+VDiZzQdTg3dmSQwuTzpiIOSLd7alXL y6xZcXhjd0Z1dq7UwlrU9IsRDU8sag8X5sjNjBP2vIZDj2p0Mg/iwOyOI5ZOWnOg==; Received: by sipsolutions.net with esmtpsa (TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim 4.95) (envelope-from ) id 1oBYvZ-00EgvB-BN; Wed, 13 Jul 2022 11:45:05 +0200 From: Johannes Berg To: linux-wireless@vger.kernel.org Cc: Johannes Berg Subject: [PATCH 02/76] wifi: mac80211: consistently use sdata_dereference() Date: Wed, 13 Jul 2022 11:43:48 +0200 Message-Id: <20220713114425.d0af54df5907.Iddea3f3e887d53f5848389676fd3b07f97652ce3@changeid> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220713094502.163926-1-johannes@sipsolutions.net> References: <20220713094502.163926-1-johannes@sipsolutions.net> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Johannes Berg Instead of open-coding it, use sdata_dereference(). Signed-off-by: Johannes Berg --- net/mac80211/ibss.c | 12 ++++-------- net/mac80211/mesh.c | 9 +++------ 2 files changed, 7 insertions(+), 14 deletions(-) diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c index 65b6255c6747..d30a82f1620b 100644 --- a/net/mac80211/ibss.c +++ b/net/mac80211/ibss.c @@ -255,8 +255,7 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, drv_leave_ibss(local, sdata); } - presp = rcu_dereference_protected(ifibss->presp, - lockdep_is_held(&sdata->wdev.mtx)); + presp = sdata_dereference(ifibss->presp, sdata); RCU_INIT_POINTER(ifibss->presp, NULL); if (presp) kfree_rcu(presp, rcu_head); @@ -509,8 +508,7 @@ int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, rcu_read_unlock(); cfg80211_put_bss(sdata->local->hw.wiphy, cbss); - old_presp = rcu_dereference_protected(ifibss->presp, - lockdep_is_held(&sdata->wdev.mtx)); + old_presp = sdata_dereference(ifibss->presp, sdata); presp = ieee80211_ibss_build_presp(sdata, sdata->vif.bss_conf.beacon_int, @@ -714,8 +712,7 @@ static void ieee80211_ibss_disconnect(struct ieee80211_sub_if_data *sdata) sdata->vif.cfg.ssid_len = 0; /* remove beacon */ - presp = rcu_dereference_protected(ifibss->presp, - lockdep_is_held(&sdata->wdev.mtx)); + presp = sdata_dereference(ifibss->presp, sdata); RCU_INIT_POINTER(sdata->u.ibss.presp, NULL); if (presp) kfree_rcu(presp, rcu_head); @@ -1530,8 +1527,7 @@ static void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata, sdata_assert_lock(sdata); - presp = rcu_dereference_protected(ifibss->presp, - lockdep_is_held(&sdata->wdev.mtx)); + presp = sdata_dereference(ifibss->presp, sdata); if (ifibss->state != IEEE80211_IBSS_MLME_JOINED || len < 24 + 2 || !presp) diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c index 13722a7f2254..6160211a7eee 100644 --- a/net/mac80211/mesh.c +++ b/net/mac80211/mesh.c @@ -993,8 +993,7 @@ ieee80211_mesh_rebuild_beacon(struct ieee80211_sub_if_data *sdata) struct beacon_data *old_bcn; int ret; - old_bcn = rcu_dereference_protected(sdata->u.mesh.beacon, - lockdep_is_held(&sdata->wdev.mtx)); + old_bcn = sdata_dereference(sdata->u.mesh.beacon, sdata); ret = ieee80211_mesh_build_beacon(&sdata->u.mesh); if (ret) /* just reuse old beacon */ @@ -1084,8 +1083,7 @@ void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata) ieee80211_link_info_change_notify(sdata, 0, BSS_CHANGED_BEACON_ENABLED); /* remove beacon */ - bcn = rcu_dereference_protected(ifmsh->beacon, - lockdep_is_held(&sdata->wdev.mtx)); + bcn = sdata_dereference(ifmsh->beacon, sdata); RCU_INIT_POINTER(ifmsh->beacon, NULL); kfree_rcu(bcn, rcu_head); @@ -1380,8 +1378,7 @@ int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata) ifmsh->chsw_ttl = 0; /* Remove the CSA and MCSP elements from the beacon */ - tmp_csa_settings = rcu_dereference_protected(ifmsh->csa, - lockdep_is_held(&sdata->wdev.mtx)); + tmp_csa_settings = sdata_dereference(ifmsh->csa, sdata); RCU_INIT_POINTER(ifmsh->csa, NULL); if (tmp_csa_settings) kfree_rcu(tmp_csa_settings, rcu_head);