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

[Cedric Izoard]

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.izo...@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