diff options
| author | Johannes Berg <johannes@sipsolutions.net> | 2010-04-30 15:48:36 +0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-05-03 22:51:47 +0400 |
| commit | f7c65594f7148b778f41d591a701e94bb22428e4 (patch) | |
| tree | f5ffe3353a5061c5251c6e5a1575a8338487da2a /net/mac80211 | |
| parent | c7ab1a4dcb8fb63364e9460b1182da6eae5f0d16 (diff) | |
| download | linux-f7c65594f7148b778f41d591a701e94bb22428e4.tar.xz | |
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.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c index 3de7a2260d65..730197591ab5 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); |