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mac80211: Fix TDLS support validation in add_station handler 

We need to verify whether the command is successful before allocating
the station entry to avoid extra processing. This also fixes a memory
leak on the error path.

Signed-off-by: Jouni Malinen <j@w1.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Jouni Malinen 2011-10-23 22:36:04 +03:00 committed by John W. Linville
parent 94d55d62bd
commit e3a4cc2f07
1 changed files with 6 additions and 6 deletions
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12
net/mac80211/cfg.c
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@ -832,6 +832,12 @@ static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
if (is_multicast_ether_addr(mac))
return -EINVAL;
/* Only TDLS-supporting stations can add TDLS peers */
if ((params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
!((wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
sdata->vif.type == NL80211_IFTYPE_STATION))
return -ENOTSUPP;
sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
if (!sta)
return -ENOMEM;
@ -841,12 +847,6 @@ static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
sta_apply_parameters(local, sta, params);
/* Only TDLS-supporting stations can add TDLS peers */
if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
!((wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
sdata->vif.type == NL80211_IFTYPE_STATION))
return -ENOTSUPP;
rate_control_rate_init(sta);
layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||