From patchwork Tue Mar 4 08:07:53 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luca Coelho X-Patchwork-Id: 3759501 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 C62799F376 for ; Tue, 4 Mar 2014 08:08:15 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id D21F32041A for ; Tue, 4 Mar 2014 08:08:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 99F7C203DF for ; Tue, 4 Mar 2014 08:08:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756553AbaCDIIE (ORCPT ); Tue, 4 Mar 2014 03:08:04 -0500 Received: from emh02.mail.saunalahti.fi ([62.142.5.108]:37895 "EHLO emh02.mail.saunalahti.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756526AbaCDIIB (ORCPT ); Tue, 4 Mar 2014 03:08:01 -0500 Received: from localhost.localdomain (a88-113-225-236.elisa-laajakaista.fi [88.113.225.236]) by emh02.mail.saunalahti.fi (Postfix) with ESMTP id 991B7818C1; Tue, 4 Mar 2014 10:07:59 +0200 (EET) From: Luca Coelho To: linux-wireless@vger.kernel.org Cc: johannes@sipsolutions.net, michal.kazior@tieto.com, sw@simonwunderlich.de, bzhao@marvell.com, arend@broadcom.com Subject: [PATCH v8 4/5] cfg80211/mac80211: move combination check to mac80211 for ibss Date: Tue, 4 Mar 2014 10:07:53 +0200 Message-Id: <1393920474-4935-5-git-send-email-luca@coelho.fi> X-Mailer: git-send-email 1.8.5.3 In-Reply-To: <1393920474-4935-1-git-send-email-luca@coelho.fi> References: <1393920474-4935-1-git-send-email-luca@coelho.fi> 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 From: Luciano Coelho Now that mac80211 can check the interface combinations itself, move the combinations check from cfg80211 to mac80211 when joining an IBSS. Signed-off-by: Luciano Coelho --- In v2: * lock the chanctx mutex in ieee80211_ibss_join() before calling ieee80211_check_combinations(). (Thanks Michal); * pass the mode argument instead of IEEE80211_CHANCTX_SHARED to ieee80211_check_combinations() in ieee80211_vif_use_channel(); In v3: * moved the second change from v2 (pass the mode argument...) to the previous patch, where it should be; In v4: * rebased on top of slightly modified applied patches In v5: * use local and sdata in ibss when calling ieee80211_check_combinations() In v7: * don't pass local in ieee80211_check_combinations() anymore; In v8: * fix radar_detect_width before calling ieee80211_check_combinations() -- rebase bug; --- net/mac80211/ibss.c | 32 +++++++++++++++++++++++++++++--- net/wireless/ibss.c | 28 ---------------------------- 2 files changed, 29 insertions(+), 31 deletions(-) diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c index bca7d09..8946b9d 100644 --- a/net/mac80211/ibss.c +++ b/net/mac80211/ibss.c @@ -1643,7 +1643,33 @@ int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, u32 changed = 0; u32 rate_flags; struct ieee80211_supported_band *sband; + enum ieee80211_chanctx_mode chanmode; + struct ieee80211_local *local = sdata->local; + int radar_detect_width = 0; int i; + int ret; + + ret = cfg80211_chandef_dfs_required(local->hw.wiphy, + ¶ms->chandef, + sdata->vif.type); + if (ret < 0) + return ret; + + if (ret > 0) { + if (!params->userspace_handles_dfs) + return -EINVAL; + radar_detect_width = BIT(params->chandef.width); + } + + chanmode = (params->channel_fixed && !ret) ? + IEEE80211_CHANCTX_SHARED : IEEE80211_CHANCTX_EXCLUSIVE; + + mutex_lock(&local->chanctx_mtx); + ret = ieee80211_check_combinations(sdata, ¶ms->chandef, chanmode, + radar_detect_width); + mutex_unlock(&local->chanctx_mtx); + if (ret < 0) + return ret; if (params->bssid) { memcpy(sdata->u.ibss.bssid, params->bssid, ETH_ALEN); @@ -1658,7 +1684,7 @@ int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, /* fix basic_rates if channel does not support these rates */ rate_flags = ieee80211_chandef_rate_flags(¶ms->chandef); - sband = sdata->local->hw.wiphy->bands[params->chandef.chan->band]; + sband = local->hw.wiphy->bands[params->chandef.chan->band]; for (i = 0; i < sband->n_bitrates; i++) { if ((rate_flags & sband->bitrates[i].flags) != rate_flags) sdata->u.ibss.basic_rates &= ~BIT(i); @@ -1707,9 +1733,9 @@ int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, ieee80211_bss_info_change_notify(sdata, changed); sdata->smps_mode = IEEE80211_SMPS_OFF; - sdata->needed_rx_chains = sdata->local->rx_chains; + sdata->needed_rx_chains = local->rx_chains; - ieee80211_queue_work(&sdata->local->hw, &sdata->work); + ieee80211_queue_work(&local->hw, &sdata->work); return 0; } diff --git a/net/wireless/ibss.c b/net/wireless/ibss.c index d81cb68..8282de8 100644 --- a/net/wireless/ibss.c +++ b/net/wireless/ibss.c @@ -88,8 +88,6 @@ int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev, struct cfg80211_cached_keys *connkeys) { struct wireless_dev *wdev = dev->ieee80211_ptr; - struct ieee80211_channel *check_chan; - u8 radar_detect_width = 0; int err; ASSERT_WDEV_LOCK(wdev); @@ -126,32 +124,6 @@ int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev, #ifdef CONFIG_CFG80211_WEXT wdev->wext.ibss.chandef = params->chandef; #endif - check_chan = params->chandef.chan; - if (params->userspace_handles_dfs) { - /* Check for radar even if the current channel is not - * a radar channel - it might decide to change to DFS - * channel later. - */ - radar_detect_width = BIT(params->chandef.width); - } - - /* TODO: We need to check the combinations at this point, we - * probably must move this call down to join_ibss() in - * mac80211. - */ - err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype, - check_chan, - (params->channel_fixed && - !radar_detect_width) - ? CHAN_MODE_SHARED - : CHAN_MODE_EXCLUSIVE, - radar_detect_width); - - if (err) { - wdev->connect_keys = NULL; - return err; - } - err = rdev_join_ibss(rdev, dev, params); if (err) { wdev->connect_keys = NULL;