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authorJohannes Berg <johannes.berg@intel.com>2016-03-31 20:02:02 +0300
committerJohannes Berg <johannes.berg@intel.com>2016-04-06 13:18:13 +0200
commitd63b548fffdbd239a5e65bb89424be19229048ba (patch)
tree3eadfac40d14bce86fda257748d8124d63aaa804 /net/mac80211/rx.c
parente596af827960c41a6051d4e719bafcfb7da11b64 (diff)
downloadlinux-d63b548fffdbd239a5e65bb89424be19229048ba.tar.bz2
mac80211: allow passing transmitter station on RX
Sometimes drivers already looked up, or know out-of-band from their device, which station transmitted a given RX frame. Allow them to pass the station pointer to mac80211 to save the extra lookup. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/rx.c')
-rw-r--r--net/mac80211/rx.c18
1 files changed, 13 insertions, 5 deletions
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 009bb90d7f5a..212b9993c8dc 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -3552,6 +3552,7 @@ static bool ieee80211_prepare_and_rx_handle(struct ieee80211_rx_data *rx,
* be called with rcu_read_lock protection.
*/
static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
+ struct ieee80211_sta *pubsta,
struct sk_buff *skb,
struct napi_struct *napi)
{
@@ -3561,7 +3562,6 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
__le16 fc;
struct ieee80211_rx_data rx;
struct ieee80211_sub_if_data *prev;
- struct sta_info *sta, *prev_sta;
struct rhash_head *tmp;
int err = 0;
@@ -3597,7 +3597,14 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
ieee80211_is_beacon(hdr->frame_control)))
ieee80211_scan_rx(local, skb);
- if (ieee80211_is_data(fc)) {
+ if (pubsta) {
+ rx.sta = container_of(pubsta, struct sta_info, sta);
+ rx.sdata = rx.sta->sdata;
+ if (ieee80211_prepare_and_rx_handle(&rx, skb, true))
+ return;
+ goto out;
+ } else if (ieee80211_is_data(fc)) {
+ struct sta_info *sta, *prev_sta;
const struct bucket_table *tbl;
prev_sta = NULL;
@@ -3671,8 +3678,8 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
* This is the receive path handler. It is called by a low level driver when an
* 802.11 MPDU is received from the hardware.
*/
-void ieee80211_rx_napi(struct ieee80211_hw *hw, struct sk_buff *skb,
- struct napi_struct *napi)
+void ieee80211_rx_napi(struct ieee80211_hw *hw, struct ieee80211_sta *pubsta,
+ struct sk_buff *skb, struct napi_struct *napi)
{
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_rate *rate = NULL;
@@ -3771,7 +3778,8 @@ void ieee80211_rx_napi(struct ieee80211_hw *hw, struct sk_buff *skb,
ieee80211_tpt_led_trig_rx(local,
((struct ieee80211_hdr *)skb->data)->frame_control,
skb->len);
- __ieee80211_rx_handle_packet(hw, skb, napi);
+
+ __ieee80211_rx_handle_packet(hw, pubsta, skb, napi);
rcu_read_unlock();