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iwl4965: fix "Received BA when not expected" 

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 2a87c26bbe
Author: Johannes Berg <johannes.berg@intel.com>
Date:   Fri Apr 30 11:30:45 2010 -0700

    iwlwifi: use iwl_find_station less

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Stanislaw Gruszka 2011-04-29 17:51:56 +02:00 committed by John W. Linville
parent bfd36103ec
commit 16b345d896
1 changed files with 12 additions and 6 deletions
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18
drivers/net/wireless/iwlegacy/iwl-4965-tx.c
View File

@ -316,12 +316,18 @@ int iwl4965_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_legacy_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_legacy_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);