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Diffstat (limited to 'net/ipv4/ip_gre.c')
-rw-r--r--net/ipv4/ip_gre.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index f47c9f76754b..f78402d097b3 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -810,11 +810,13 @@ static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev
810 tunnel->err_count = 0; 810 tunnel->err_count = 0;
811 } 811 }
812 812
813 max_headroom = LL_RESERVED_SPACE(tdev) + gre_hlen; 813 max_headroom = LL_RESERVED_SPACE(tdev) + gre_hlen + rt->u.dst.header_len;
814 814
815 if (skb_headroom(skb) < max_headroom || skb_shared(skb)|| 815 if (skb_headroom(skb) < max_headroom || skb_shared(skb)||
816 (skb_cloned(skb) && !skb_clone_writable(skb, 0))) { 816 (skb_cloned(skb) && !skb_clone_writable(skb, 0))) {
817 struct sk_buff *new_skb = skb_realloc_headroom(skb, max_headroom); 817 struct sk_buff *new_skb = skb_realloc_headroom(skb, max_headroom);
818 if (max_headroom > dev->needed_headroom)
819 dev->needed_headroom = max_headroom;
818 if (!new_skb) { 820 if (!new_skb) {
819 ip_rt_put(rt); 821 ip_rt_put(rt);
820 txq->tx_dropped++; 822 txq->tx_dropped++;