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authorJiri Benc <jbenc@redhat.com>2016-09-30 20:08:05 +0300
committerDavid S. Miller <davem@davemloft.net>2016-10-03 09:00:21 +0300
commitf7d49bce8e741e1e6aa14ce4db1b6cea7e4be4e8 (patch)
treecdd0b8382ee068c406dfee9b0f329cc2c5c46c33 /net/openvswitch
parentab580705693d5af79663efa504a72248700766fc (diff)
downloadlinux-f7d49bce8e741e1e6aa14ce4db1b6cea7e4be4e8.tar.xz
openvswitch: mpls: set network header correctly on key extract
After the 48d2ab609b6b ("net: mpls: Fixups for GSO"), MPLS handling in openvswitch was changed to have network header pointing to the start of the MPLS headers and inner_network_header pointing after the MPLS headers. However, key_extract was missed by the mentioned commit, causing incorrect headers to be set when a MPLS packet just enters the bridge or after it is recirculated. Fixes: 48d2ab609b6b ("net: mpls: Fixups for GSO") Signed-off-by: Jiri Benc <jbenc@redhat.com> Acked-by: Pravin B Shelar <pshelar@ovn.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/openvswitch')
-rw-r--r--net/openvswitch/flow.c11
1 files changed, 3 insertions, 8 deletions
diff --git a/net/openvswitch/flow.c b/net/openvswitch/flow.c
index 634cc10d6dee..c8c82e109c68 100644
--- a/net/openvswitch/flow.c
+++ b/net/openvswitch/flow.c
@@ -633,12 +633,7 @@ static int key_extract(struct sk_buff *skb, struct sw_flow_key *key)
} else if (eth_p_mpls(key->eth.type)) {
size_t stack_len = MPLS_HLEN;
- /* In the presence of an MPLS label stack the end of the L2
- * header and the beginning of the L3 header differ.
- *
- * Advance network_header to the beginning of the L3
- * header. mac_len corresponds to the end of the L2 header.
- */
+ skb_set_inner_network_header(skb, skb->mac_len);
while (1) {
__be32 lse;
@@ -646,12 +641,12 @@ static int key_extract(struct sk_buff *skb, struct sw_flow_key *key)
if (unlikely(error))
return 0;
- memcpy(&lse, skb_network_header(skb), MPLS_HLEN);
+ memcpy(&lse, skb_inner_network_header(skb), MPLS_HLEN);
if (stack_len == MPLS_HLEN)
memcpy(&key->mpls.top_lse, &lse, MPLS_HLEN);
- skb_set_network_header(skb, skb->mac_len + stack_len);
+ skb_set_inner_network_header(skb, skb->mac_len + stack_len);
if (lse & htonl(MPLS_LS_S_MASK))
break;