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mac80211: data path modification for TDLS peers

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Mark the STA entries of enabled TDLS peers with a new "peer authorized"
flag.

During link setup, allow special TDLS setup frames through the AP, but
otherwise drop all packets destined to the peer. This is required by the
TDLS (802.11z) specification in order to prevent reordering of MSDUs
between the AP and direct paths.

When setup completes and the peer is authorized, send data directly,
bypassing the AP.

In the Rx path, allow data to be received directly from TDLS peers.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Cc: Kalyan C Gaddam <chakkal@iit.edu>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Arik Nemtsov
2011-09-28 14:12:54 +03:00
committed by John W. Linville
parent 07ba55d7f1
commit 941c93cd03
4 changed files with 55 additions and 7 deletions
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10
net/mac80211/cfg.c
View File

@@ -2427,6 +2427,7 @@ fail:
static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
u8 *peer, enum nl80211_tdls_operation oper)
{
struct sta_info *sta;
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
@@ -2441,6 +2442,15 @@ static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
switch (oper) {
case NL80211_TDLS_ENABLE_LINK:
rcu_read_lock();
sta = sta_info_get(sdata, peer);
if (!sta) {
rcu_read_unlock();
return -ENOLINK;
}
set_sta_flags(sta, WLAN_STA_TDLS_PEER_AUTH);
rcu_read_unlock();
break;
case NL80211_TDLS_DISABLE_LINK:
return sta_info_destroy_addr(sdata, peer);