From 3de3802c3d0909c4f222df93cfc0f4ed91191e4c Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Tue, 4 Feb 2014 09:54:07 +0100
Subject: [PATCH] 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>
---
net/mac80211/mlme.c | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 6c9ebca02394a..61604834b9146 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);
--
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