diff mbox series

[4/6] mac80211: use same flag everywhere to avoid sequence number overwrite

Message ID 20200723100153.31631-4-Mathy.Vanhoef@kuleuven.be (mailing list archive)
State Accepted
Delegated to: Johannes Berg
Headers show
Series mac80211: monitor mode injection fixes | expand

Commit Message

Mathy Vanhoef July 23, 2020, 10:01 a.m. UTC 
Use the IEEE80211_TX_CTRL_NO_SEQNO flag in ieee80211_tx_info to mark
probe requests whose sequence number must not be overwritten. This
provides consistency with the radiotap flag that can be set to indicate
that the sequence number of an injected frame should not be overwritten.

Signed-off-by: Mathy Vanhoef <Mathy.Vanhoef@kuleuven.be>
---
 net/mac80211/ieee80211_i.h | 1 -
 net/mac80211/scan.c        | 7 +++----
 net/mac80211/tx.c          | 2 --
 3 files changed, 3 insertions(+), 7 deletions(-)
diff mbox series

Patch

diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index ec1a71ac6..8f1a325e0 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -164,7 +164,6 @@  typedef unsigned __bitwise ieee80211_tx_result;
 #define TX_DROP		((__force ieee80211_tx_result) 1u)
 #define TX_QUEUED	((__force ieee80211_tx_result) 2u)
 
-#define IEEE80211_TX_NO_SEQNO		BIT(0)
 #define IEEE80211_TX_UNICAST		BIT(1)
 #define IEEE80211_TX_PS_BUFFERED	BIT(2)
 
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index ad90bbe57..8ccdafa62 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -591,7 +591,6 @@  static void ieee80211_send_scan_probe_req(struct ieee80211_sub_if_data *sdata,
 					  struct ieee80211_channel *channel)
 {
 	struct sk_buff *skb;
-	u32 txdata_flags = 0;
 
 	skb = ieee80211_build_probe_req(sdata, src, dst, ratemask, channel,
 					ssid, ssid_len,
@@ -600,15 +599,15 @@  static void ieee80211_send_scan_probe_req(struct ieee80211_sub_if_data *sdata,
 	if (skb) {
 		if (flags & IEEE80211_PROBE_FLAG_RANDOM_SN) {
 			struct ieee80211_hdr *hdr = (void *)skb->data;
+			struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 			u16 sn = get_random_u32();
 
-			txdata_flags |= IEEE80211_TX_NO_SEQNO;
+			info->control.flags |= IEEE80211_TX_CTRL_NO_SEQNO;
 			hdr->seq_ctrl =
 				cpu_to_le16(IEEE80211_SN_TO_SEQ(sn));
 		}
 		IEEE80211_SKB_CB(skb)->flags |= tx_flags;
-		ieee80211_tx_skb_tid_band(sdata, skb, 7, channel->band,
-					  txdata_flags);
+		ieee80211_tx_skb_tid_band(sdata, skb, 7, channel->band, 0);
 	}
 }
 
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index cc5068999..279d1edbb 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -835,8 +835,6 @@  ieee80211_tx_h_sequence(struct ieee80211_tx_data *tx)
 	 */
 	if (!ieee80211_is_data_qos(hdr->frame_control) ||
 	    is_multicast_ether_addr(hdr->addr1)) {
-		if (tx->flags & IEEE80211_TX_NO_SEQNO)
-			return TX_CONTINUE;
 		/* driver should assign sequence number */
 		info->flags |= IEEE80211_TX_CTL_ASSIGN_SEQ;
 		/* for pure STA mode without beacons, we can do it */