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authorAlexey Kodanev <alexey.kodanev@oracle.com>2017-10-06 19:02:35 +0300
committerDavid S. Miller <davem@davemloft.net>2017-10-08 10:12:15 -0700
commit3d0241d57c7b25bb75ac9d7a62753642264fdbce (patch)
tree536ca01291bd131be75fed6742557d1885774622 /net/ipv4/udp_offload.c
parenta69518cf0b4cbf02c6bc1239cdeb8750a9eb8077 (diff)
downloadlinux-3d0241d57c7b25bb75ac9d7a62753642264fdbce.tar.bz2
gso: fix payload length when gso_size is zero
When gso_size reset to zero for the tail segment in skb_segment(), later in ipv6_gso_segment(), __skb_udp_tunnel_segment() and gre_gso_segment() we will get incorrect results (payload length, pcsum) for that segment. inet_gso_segment() already has a check for gso_size before calculating payload. The issue was found with LTP vxlan & gre tests over ixgbe NIC. Fixes: 07b26c9454a2 ("gso: Support partial splitting at the frag_list pointer") Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com> Acked-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/udp_offload.c')
-rw-r--r--net/ipv4/udp_offload.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/udp_offload.c b/net/ipv4/udp_offload.c
index 97658bfc1b58..e360d55be555 100644
--- a/net/ipv4/udp_offload.c
+++ b/net/ipv4/udp_offload.c
@@ -120,7 +120,7 @@ static struct sk_buff *__skb_udp_tunnel_segment(struct sk_buff *skb,
* will be using a length value equal to only one MSS sized
* segment instead of the entire frame.
*/
- if (gso_partial) {
+ if (gso_partial && skb_is_gso(skb)) {
uh->len = htons(skb_shinfo(skb)->gso_size +
SKB_GSO_CB(skb)->data_offset +
skb->head - (unsigned char *)uh);