diff mbox

[v2] mac80211: Ensure enough headroom when forwarding mesh pkt

Message ID 1ffe01100a724290ab910d68980604ba@ceva-dsp.com (mailing list archive)
State Accepted
Delegated to: Johannes Berg
Headers show

Commit Message

Cedric Izoard Dec. 7, 2016, 9:59 a.m. UTC 
When a buffer is duplicated during MESH packet forwarding,
this patch ensures that the new buffer has enough headroom.

Signed-off-by: Cedric Izoard <cedric.izoard@ceva-dsp.com>
---
 net/mac80211/rx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Johannes Berg Dec. 13, 2016, 3:09 p.m. UTC | #1 
On Wed, 2016-12-07 at 09:59 +0000, Cedric Izoard wrote:
> When a buffer is duplicated during MESH packet forwarding,
> this patch ensures that the new buffer has enough headroom.

Applied.

johannes
diff mbox

Patch

diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index d2a00f2..bfa5f4d 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -2468,7 +2468,7 @@  ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
 	if (!ifmsh->mshcfg.dot11MeshForwarding)
 		goto out;
 
-	fwd_skb = skb_copy(skb, GFP_ATOMIC);
+	fwd_skb = skb_copy_expand(skb, local->tx_headroom, 0, GFP_ATOMIC);
 	if (!fwd_skb) {
 		net_info_ratelimited("%s: failed to clone mesh frame\n",
 				    sdata->name);