Return-path: Received: from mail-we0-f169.google.com ([74.125.82.169]:36231 "EHLO mail-we0-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932143AbaGVT1y (ORCPT ); Tue, 22 Jul 2014 15:27:54 -0400 Received: by mail-we0-f169.google.com with SMTP id u56so116998wes.0 for ; Tue, 22 Jul 2014 12:27:52 -0700 (PDT) From: Emmanuel Grumbach To: linux-wireless@vger.kernel.org Cc: Arik Nemtsov , Arik Nemtsov , Emmanuel Grumbach Subject: [PATCH 20/20] iwlwifi: mvm: teardown TDLS peers during chan-switch and AP DCM Date: Tue, 22 Jul 2014 22:26:51 +0300 Message-Id: <1406057211-31752-20-git-send-email-egrumbach@gmail.com> (sfid-20140722_212802_707475_6206FD9B) In-Reply-To: <53CEB854.9000008@gmail.com> References: <53CEB854.9000008@gmail.com> Sender: linux-wireless-owner@vger.kernel.org List-ID: From: Arik Nemtsov The DCM condition was not checked well for channel switch in both AP and station scenarios. Teardown was also not done for AP/GO DCM. Add the missing checks. Reported-by: Peer, Ilan Signed-off-by: Arik Nemtsov Signed-off-by: Emmanuel Grumbach --- drivers/net/wireless/iwlwifi/mvm/mac80211.c | 52 +++++++++++++++++------------ 1 file changed, 30 insertions(+), 22 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/iwlwifi/mvm/mac80211.c index 6639341..0d6a8b7 100644 --- a/drivers/net/wireless/iwlwifi/mvm/mac80211.c +++ b/drivers/net/wireless/iwlwifi/mvm/mac80211.c @@ -1406,6 +1406,28 @@ static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm, } #endif +static void iwl_mvm_teardown_tdls_peers(struct iwl_mvm *mvm) +{ + struct ieee80211_sta *sta; + struct iwl_mvm_sta *mvmsta; + int i; + + lockdep_assert_held(&mvm->mutex); + + for (i = 0; i < IWL_MVM_STATION_COUNT; i++) { + sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], + lockdep_is_held(&mvm->mutex)); + if (!sta || IS_ERR(sta) || !sta->tdls) + continue; + + mvmsta = iwl_mvm_sta_from_mac80211(sta); + ieee80211_tdls_oper_request(mvmsta->vif, sta->addr, + NL80211_TDLS_TEARDOWN, + WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED, + GFP_KERNEL); + } +} + static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct ieee80211_bss_conf *bss_conf, @@ -1600,6 +1622,10 @@ static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw, iwl_mvm_bt_coex_vif_change(mvm); + /* we don't support TDLS during DCM */ + if (iwl_mvm_phy_ctx_count(mvm) > 1) + iwl_mvm_teardown_tdls_peers(mvm); + mutex_unlock(&mvm->mutex); return 0; @@ -1947,28 +1973,6 @@ static void iwl_mvm_recalc_tdls_state(struct iwl_mvm *mvm, iwl_mvm_power_update_mac(mvm); } -static void iwl_mvm_teardown_tdls_peers(struct iwl_mvm *mvm) -{ - struct ieee80211_sta *sta; - struct iwl_mvm_sta *mvmsta; - int i; - - lockdep_assert_held(&mvm->mutex); - - for (i = 0; i < IWL_MVM_STATION_COUNT; i++) { - sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], - lockdep_is_held(&mvm->mutex)); - if (!sta || IS_ERR(sta) || !sta->tdls) - continue; - - mvmsta = iwl_mvm_sta_from_mac80211(sta); - ieee80211_tdls_oper_request(mvmsta->vif, sta->addr, - NL80211_TDLS_TEARDOWN, - WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED, - GFP_KERNEL); - } -} - static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta, @@ -2846,6 +2850,10 @@ static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw, goto out_remove; } + /* we don't support TDLS during DCM - can be caused by channel switch */ + if (iwl_mvm_phy_ctx_count(mvm) > 1) + iwl_mvm_teardown_tdls_peers(mvm); + goto out; out_remove: -- 1.8.3.2