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authorJohannes Berg <johannes.berg@intel.com>2014-02-04 12:54:07 +0400
committerJohannes Berg <johannes.berg@intel.com>2014-02-05 17:03:24 +0400
commit3de3802c3d0909c4f222df93cfc0f4ed91191e4c (patch)
treec9b6e67c659e2e7b4d0aed9089fea59a65e453e2 /net
parent4d9523005f956e23da2df1b884a08c17e2a2d5a2 (diff)
downloadlinux-3de3802c3d0909c4f222df93cfc0f4ed91191e4c.tar.xz
mac80211: order IEs in association request correctly
In association request frames, there may be IEs passed from userspace (such as interworking IEs) between HT and VHT, so add code to insert those inbetween them. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net')
-rw-r--r--net/mac80211/mlme.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 6c9ebca02394..61604834b914 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -756,6 +756,34 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param,
sband, chan, sdata->smps_mode);
+ /* if present, add any custom IEs that go before VHT */
+ if (assoc_data->ie_len) {
+ static const u8 before_vht[] = {
+ WLAN_EID_SSID,
+ WLAN_EID_SUPP_RATES,
+ WLAN_EID_EXT_SUPP_RATES,
+ WLAN_EID_PWR_CAPABILITY,
+ WLAN_EID_SUPPORTED_CHANNELS,
+ WLAN_EID_RSN,
+ WLAN_EID_QOS_CAPA,
+ WLAN_EID_RRM_ENABLED_CAPABILITIES,
+ WLAN_EID_MOBILITY_DOMAIN,
+ WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
+ WLAN_EID_HT_CAPABILITY,
+ WLAN_EID_BSS_COEX_2040,
+ WLAN_EID_EXT_CAPABILITY,
+ WLAN_EID_QOS_TRAFFIC_CAPA,
+ WLAN_EID_TIM_BCAST_REQ,
+ WLAN_EID_INTERWORKING,
+ };
+ noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len,
+ before_vht, ARRAY_SIZE(before_vht),
+ offset);
+ pos = skb_put(skb, noffset - offset);
+ memcpy(pos, assoc_data->ie + offset, noffset - offset);
+ offset = noffset;
+ }
+
if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
ieee80211_add_vht_ie(sdata, skb, sband,
&assoc_data->ap_vht_cap);