From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mx1.redhat.com ([209.132.183.28]:42478 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755581Ab1D2Pv3 (ORCPT ); Fri, 29 Apr 2011 11:51:29 -0400 Date: Fri, 29 Apr 2011 17:51:06 +0200 From: Stanislaw Gruszka To: Wey-Yi Guy Cc: Intel Linux Wireless , linux-wireless@vger.kernel.org, Johannes Berg Subject: [PATCH wireless-2.6 v2] iwlagn: fix "Received BA when not expected" Message-ID: <20110429155105.GB5537@redhat.com> (sfid-20110429_175132_603213_63544DC0) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-wireless-owner@vger.kernel.org List-ID: Need to use broadcast sta_id for management frames, otherwise we broke BA session in the firmware and get messages like that: "Received BA when not expected" or (on older kernels): "BA scd_flow 0 does not match txq_id 10" This fix regression introduced in 2.6.35 during station management code rewrite by: commit 2a87c26bbe9587baeb9e56d3ce0b4971bd777643 Author: Johannes Berg Date: Fri Apr 30 11:30:45 2010 -0700 iwlwifi: use iwl_find_station less Patch partially resolve: https://bugzilla.kernel.org/show_bug.cgi?id=16691 However, there are still 11n performance problems on 4965 and 5xxx devices that need to be investigated. Cc: stable@kernel.org # 2.6.35+ Signed-off-by: Stanislaw Gruszka --- drivers/net/wireless/iwlwifi/iwl-agn-tx.c | 17 +++++++++++------ 1 files changed, 11 insertions(+), 6 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-tx.c b/drivers/net/wireless/iwlwifi/iwl-agn-tx.c index 494de0e..4afae14 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn-tx.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn-tx.c @@ -582,12 +582,17 @@ int iwlagn_tx_skb(struct iwl_priv *priv, struct sk_buff *skb) hdr_len = ieee80211_hdrlen(fc); - /* Find index into station table for destination station */ - sta_id = iwl_sta_id_or_broadcast(priv, ctx, info->control.sta); - if (sta_id == IWL_INVALID_STATION) { - IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n", - hdr->addr1); - goto drop_unlock; + /* For management frames use broadcast id to do not break aggregation */ + if (!ieee80211_is_data(fc)) + sta_id = ctx->bcast_sta_id; + else { + /* Find index into station table for destination station */ + sta_id = iwl_sta_id_or_broadcast(priv, ctx, info->control.sta); + if (sta_id == IWL_INVALID_STATION) { + IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n", + hdr->addr1); + goto drop_unlock; + } } IWL_DEBUG_TX(priv, "station Id %d\n", sta_id); -- 1.7.1