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authorArik Nemtsov <arik@wizery.com>2014-07-17 16:14:22 +0200
committerJohannes Berg <johannes.berg@intel.com>2014-07-21 12:14:03 +0200
commitdd8c0b03d35be7effe20c9e5fda7e231e2c88e19 (patch)
tree58c87b26e67f525cd4e6684678a0e4a311ea810e /net/mac80211/tdls.c
parentmac80211: avoid adding some IEs on TDLS setup failure packets (diff)
downloadlinux-dd8c0b03d35be7effe20c9e5fda7e231e2c88e19.tar.xz
linux-dd8c0b03d35be7effe20c9e5fda7e231e2c88e19.zip
mac80211: set TDLS capab to zero on failure frames
When sending setup-failure frames, set the capability field to zero, as mandated by the specification (IEEE802.11-2012 8.5.13). Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com> Reviewed-by: Liad Kaufman <liad.kaufman@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/tdls.c')
-rw-r--r--net/mac80211/tdls.c16
1 files changed, 12 insertions, 4 deletions
diff --git a/net/mac80211/tdls.c b/net/mac80211/tdls.c
index 99d5ed3aa474..398a41302972 100644
--- a/net/mac80211/tdls.c
+++ b/net/mac80211/tdls.c
@@ -46,11 +46,16 @@ static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
*pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
}
-static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
+static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata,
+ u16 status_code)
{
struct ieee80211_local *local = sdata->local;
u16 capab;
+ /* The capability will be 0 when sending a failure code */
+ if (status_code != 0)
+ return 0;
+
capab = 0;
if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ)
return capab;
@@ -207,7 +212,8 @@ ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
skb_put(skb, sizeof(tf->u.setup_req));
tf->u.setup_req.dialog_token = dialog_token;
tf->u.setup_req.capability =
- cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
+ cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata,
+ status_code));
break;
case WLAN_TDLS_SETUP_RESPONSE:
tf->category = WLAN_CATEGORY_TDLS;
@@ -217,7 +223,8 @@ ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
tf->u.setup_resp.status_code = cpu_to_le16(status_code);
tf->u.setup_resp.dialog_token = dialog_token;
tf->u.setup_resp.capability =
- cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
+ cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata,
+ status_code));
break;
case WLAN_TDLS_SETUP_CONFIRM:
tf->category = WLAN_CATEGORY_TDLS;
@@ -274,7 +281,8 @@ ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
mgmt->u.action.u.tdls_discover_resp.dialog_token =
dialog_token;
mgmt->u.action.u.tdls_discover_resp.capability =
- cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
+ cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata,
+ status_code));
break;
default:
return -EINVAL;