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Diffstat (limited to 'net')
-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 2a4ef9dc48ff..fad0bb1e3e9a 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -1245,7 +1245,9 @@ static int erspan_tunnel_init(struct net_device *dev)
tunnel->tun_hlen = 8;
tunnel->parms.iph.protocol = IPPROTO_GRE;
- t_hlen = tunnel->hlen + sizeof(struct iphdr) + sizeof(struct erspanhdr);
+ tunnel->hlen = tunnel->tun_hlen + tunnel->encap_hlen +
+ sizeof(struct erspanhdr);
+ t_hlen = tunnel->hlen + sizeof(struct iphdr);
dev->needed_headroom = LL_MAX_HEADER + t_hlen + 4;
dev->mtu = ETH_DATA_LEN - t_hlen - 4;