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path: root/net/ipv4/gre_demux.c
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Diffstat (limited to 'net/ipv4/gre_demux.c')
-rw-r--r--net/ipv4/gre_demux.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/net/ipv4/gre_demux.c b/net/ipv4/gre_demux.c
index fbfd829f404..0485bf7f8f0 100644
--- a/net/ipv4/gre_demux.c
+++ b/net/ipv4/gre_demux.c
@@ -68,6 +68,7 @@ void gre_build_header(struct sk_buff *skb, const struct tnl_ptk_info *tpi,
skb_push(skb, hdr_len);
+ skb_reset_transport_header(skb);
greh = (struct gre_base_hdr *)skb->data;
greh->flags = tnl_flags_to_gre_flags(tpi->flags);
greh->protocol = tpi->proto;
@@ -84,7 +85,8 @@ void gre_build_header(struct sk_buff *skb, const struct tnl_ptk_info *tpi,
ptr--;
}
if (tpi->flags&TUNNEL_CSUM &&
- !(skb_shinfo(skb)->gso_type & SKB_GSO_GRE)) {
+ !(skb_shinfo(skb)->gso_type &
+ (SKB_GSO_GRE|SKB_GSO_GRE_CSUM))) {
*ptr = 0;
*(__sum16 *)ptr = csum_fold(skb_checksum(skb, 0,
skb->len, 0));