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From: Cedric Izoard <Cedric.Izoard@ceva-dsp.com>
To: "linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>
Subject: [PATCH v2] mac80211: Ensure enough headroom when forwarding mesh pkt
Date: Wed, 7 Dec 2016 09:59:00 +0000	[thread overview]
Message-ID: <1ffe01100a724290ab910d68980604ba@ceva-dsp.com> (raw)

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(-)

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);
-- 
2.7.4

             reply	other threads:[~2016-12-07 10:14 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-12-07  9:59 Cedric Izoard [this message]
2016-12-13 15:09 ` [PATCH v2] mac80211: Ensure enough headroom when forwarding mesh pkt Johannes Berg

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