mac80211: fix rekeying in ap mode with connected powersave stations

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19470 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/mac80211/patches/550-radiotap_ps_buffer.patch

@@ -0,0 +1,48 @@
+--- a/include/net/mac80211.h
++++ b/include/net/mac80211.h
+@@ -274,6 +274,8 @@ struct ieee80211_bss_conf {
+  * @IEEE80211_TX_INTFL_RETRANSMISSION: This frame is being retransmitted
+  *	after TX status because the destination was asleep, it must not
+  *	be modified again (no seqno assignment, crypto, etc.)
++ * @IEEE80211_TX_INTFL_HAS_RADIOTAP: This frame was injected and still
++ *	has a radiotap header at skb->data.
+  */
+ enum mac80211_tx_control_flags {
+ 	IEEE80211_TX_CTL_REQ_TX_STATUS		= BIT(0),
+@@ -295,6 +297,7 @@ enum mac80211_tx_control_flags {
+ 	IEEE80211_TX_CTL_PSPOLL_RESPONSE	= BIT(17),
+ 	IEEE80211_TX_CTL_MORE_FRAMES		= BIT(18),
+ 	IEEE80211_TX_INTFL_RETRANSMISSION	= BIT(19),
++	IEEE80211_TX_INTFL_HAS_RADIOTAP		= BIT(20),
+ };
+ 
+ /**
+--- a/net/mac80211/tx.c
++++ b/net/mac80211/tx.c
+@@ -1110,7 +1110,7 @@ ieee80211_tx_prepare(struct ieee80211_su
+ 	tx->flags |= IEEE80211_TX_FRAGMENTED;
+ 
+ 	/* process and remove the injection radiotap header */
+-	if (unlikely(info->flags & IEEE80211_TX_CTL_INJECTED)) {
++	if (unlikely(info->flags & IEEE80211_TX_INTFL_HAS_RADIOTAP)) {
+ 		if (!__ieee80211_parse_tx_radiotap(tx, skb))
+ 			return TX_DROP;
+ 
+@@ -1119,6 +1119,7 @@ ieee80211_tx_prepare(struct ieee80211_su
+ 		 * the radiotap header that was present and pre-filled
+ 		 * 'tx' with tx control information.
+ 		 */
++		info->flags &= ~IEEE80211_TX_INTFL_HAS_RADIOTAP;
+ 	}
+ 
+ 	/*
+@@ -1501,7 +1502,8 @@ static void ieee80211_xmit(struct ieee80
+ 		int hdrlen;
+ 		u16 len_rthdr;
+ 
+-		info->flags |= IEEE80211_TX_CTL_INJECTED;
++		info->flags |= IEEE80211_TX_CTL_INJECTED |
++			       IEEE80211_TX_INTFL_HAS_RADIOTAP;
+ 
+ 		len_rthdr = ieee80211_get_radiotap_len(skb->data);
+ 		hdr = (struct ieee80211_hdr *)(skb->data + len_rthdr);