From patchwork Thu Nov 14 12:09:32 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Coelho, Luciano" X-Patchwork-Id: 3182051 Return-Path: X-Original-To: patchwork-linux-wireless@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id ABC889F3A0 for ; Thu, 14 Nov 2013 12:10:24 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id D71752097A for ; Thu, 14 Nov 2013 12:10:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E203920974 for ; Thu, 14 Nov 2013 12:10:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753490Ab3KNMKM (ORCPT ); Thu, 14 Nov 2013 07:10:12 -0500 Received: from emh01.mail.saunalahti.fi ([62.142.5.107]:52503 "EHLO emh01.mail.saunalahti.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752910Ab3KNMKL (ORCPT ); Thu, 14 Nov 2013 07:10:11 -0500 Received: from porter.coelho.fi (a88-113-229-85.elisa-laajakaista.fi [88.113.229.85]) by emh01.mail.saunalahti.fi (Postfix) with ESMTP id 6894890009; Thu, 14 Nov 2013 14:10:08 +0200 (EET) From: Luciano Coelho To: linux-wireless@vger.kernel.org, sw@simonwunderlich.de, johannes@sipsolutions.net, yeohchunyeow@gmail.com Cc: yeohchunyeow@cozybit.com Subject: [PATCH v5 1/5] mac80211: refactor ieee80211_ibss_process_chanswitch() Date: Thu, 14 Nov 2013 14:09:32 +0200 Message-Id: <1384430976-13708-1-git-send-email-luciano.coelho@intel.com> X-Mailer: git-send-email 1.8.4.rc3 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Refactor ieee80211_ibss_process_chanswitch() to use ieee80211_channel_switch() and avoid code duplication. Change-Id: I265a12c7f825dc20535bad1197a81437310d0086 Signed-off-by: Luciano Coelho --- net/mac80211/cfg.c | 4 ++-- net/mac80211/ibss.c | 58 +++++++--------------------------------------- net/mac80211/ieee80211_i.h | 2 ++ 3 files changed, 12 insertions(+), 52 deletions(-) diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 3bc92d0..a98dc6b 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -3035,8 +3035,8 @@ void ieee80211_csa_finalize_work(struct work_struct *work) cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef); } -static int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, - struct cfg80211_csa_settings *params) +int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, + struct cfg80211_csa_settings *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c index 0f1fb5d..3514aab 100644 --- a/net/mac80211/ibss.c +++ b/net/mac80211/ibss.c @@ -784,18 +784,10 @@ ieee80211_ibss_process_chanswitch(struct ieee80211_sub_if_data *sdata, struct cfg80211_csa_settings params; struct ieee80211_csa_ie csa_ie; struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; - struct ieee80211_chanctx_conf *chanctx_conf; - struct ieee80211_chanctx *chanctx; enum nl80211_channel_type ch_type; - int err, num_chanctx; + int err; u32 sta_flags; - if (sdata->vif.csa_active) - return true; - - if (!sdata->vif.bss_conf.ibss_joined) - return false; - sta_flags = IEEE80211_STA_DISABLE_VHT; switch (ifibss->chandef.width) { case NL80211_CHAN_WIDTH_5: @@ -826,9 +818,6 @@ ieee80211_ibss_process_chanswitch(struct ieee80211_sub_if_data *sdata, params.count = csa_ie.count; params.chandef = csa_ie.chandef; - if (ifibss->chandef.chan->band != params.chandef.chan->band) - goto disconnect; - switch (ifibss->chandef.width) { case NL80211_CHAN_WIDTH_20_NOHT: case NL80211_CHAN_WIDTH_20: @@ -884,29 +873,6 @@ ieee80211_ibss_process_chanswitch(struct ieee80211_sub_if_data *sdata, params.radar_required = true; } - rcu_read_lock(); - chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); - if (!chanctx_conf) { - rcu_read_unlock(); - goto disconnect; - } - - /* don't handle for multi-VIF cases */ - chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); - if (chanctx->refcount > 1) { - rcu_read_unlock(); - goto disconnect; - } - num_chanctx = 0; - list_for_each_entry_rcu(chanctx, &sdata->local->chanctx_list, list) - num_chanctx++; - - if (num_chanctx > 1) { - rcu_read_unlock(); - goto disconnect; - } - rcu_read_unlock(); - /* all checks done, now perform the channel switch. */ ibss_dbg(sdata, "received channel switch announcement to go to channel %d MHz\n", @@ -914,19 +880,9 @@ ieee80211_ibss_process_chanswitch(struct ieee80211_sub_if_data *sdata, params.block_tx = !!csa_ie.mode; - ieee80211_ibss_csa_beacon(sdata, ¶ms); - sdata->csa_radar_required = params.radar_required; - - if (params.block_tx) - ieee80211_stop_queues_by_reason(&sdata->local->hw, - IEEE80211_MAX_QUEUE_MAP, - IEEE80211_QUEUE_STOP_REASON_CSA); - - sdata->csa_chandef = params.chandef; - sdata->vif.csa_active = true; - - ieee80211_bss_info_change_notify(sdata, err); - drv_channel_switch_beacon(sdata, ¶ms.chandef); + if (ieee80211_channel_switch(sdata->local->hw.wiphy, sdata->dev, + ¶ms)) + goto disconnect; ieee80211_ibss_csa_mark_radar(sdata); @@ -962,7 +918,8 @@ ieee80211_rx_mgmt_spectrum_mgmt(struct ieee80211_sub_if_data *sdata, if (len < required_len) return; - ieee80211_ibss_process_chanswitch(sdata, elems, false); + if (!sdata->vif.csa_active) + ieee80211_ibss_process_chanswitch(sdata, elems, false); } static void ieee80211_rx_mgmt_deauth_ibss(struct ieee80211_sub_if_data *sdata, @@ -1143,7 +1100,8 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, goto put_bss; /* process channel switch */ - if (ieee80211_ibss_process_chanswitch(sdata, elems, true)) + if (sdata->vif.csa_active || + ieee80211_ibss_process_chanswitch(sdata, elems, true)) goto put_bss; /* same BSSID */ diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 0edc1fb..3a77ed1 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -1412,6 +1412,8 @@ void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc); /* channel switch handling */ void ieee80211_csa_finalize_work(struct work_struct *work); +int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, + struct cfg80211_csa_settings *params); /* interface handling */ int ieee80211_iface_init(void);