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authorJohannes Berg <johannes@sipsolutions.net>2010-04-30 13:48:36 +0200
committerJohn W. Linville <linville@tuxdriver.com>2010-05-03 14:51:47 -0400
commitf7c65594f7148b778f41d591a701e94bb22428e4 (patch)
treef5ffe3353a5061c5251c6e5a1575a8338487da2a /net/mac80211
parentc7ab1a4dcb8fb63364e9460b1182da6eae5f0d16 (diff)
mac80211: fix ieee80211_find_sta[_by_hw]
Both of these functions can currently return a station pointer that, to the driver, is invalid (in IBSS mode only) because adding the station failed. Check for that, and also make ieee80211_find_sta() properly use the per interface station search. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211')
-rw-r--r--net/mac80211/sta_info.c17
1 files changed, 13 insertions, 4 deletions
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 3de7a2260d6..730197591ab 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -855,8 +855,12 @@ struct ieee80211_sta *ieee80211_find_sta_by_hw(struct ieee80211_hw *hw,
struct sta_info *sta, *nxt;
/* Just return a random station ... first in list ... */
- for_each_sta_info(hw_to_local(hw), addr, sta, nxt)
+ for_each_sta_info(hw_to_local(hw), addr, sta, nxt) {
+ if (!sta->uploaded)
+ return NULL;
return &sta->sta;
+ }
+
return NULL;
}
EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_hw);
@@ -864,14 +868,19 @@ EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_hw);
struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif,
const u8 *addr)
{
- struct ieee80211_sub_if_data *sdata;
+ struct sta_info *sta;
if (!vif)
return NULL;
- sdata = vif_to_sdata(vif);
+ sta = sta_info_get_bss(vif_to_sdata(vif), addr);
+ if (!sta)
+ return NULL;
+
+ if (!sta->uploaded)
+ return NULL;
- return ieee80211_find_sta_by_hw(&sdata->local->hw, addr);
+ return &sta->sta;
}
EXPORT_SYMBOL(ieee80211_find_sta);