From: Cedric Izoard Date: Wed, 7 Dec 2016 09:59:00 +0000 (+0000) Subject: mac80211: Ensure enough headroom when forwarding mesh pkt X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d8da0b5d64d58f7775a94bcf12dda50f13a76f22;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git mac80211: Ensure enough headroom when forwarding mesh pkt When a buffer is duplicated during MESH packet forwarding, this patch ensures that the new buffer has enough headroom. Signed-off-by: Cedric Izoard Signed-off-by: Johannes Berg --- diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index eeab7250f4b9..3e289a64ed43 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -2472,7 +2472,7 @@ 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);