Upstream commit:
commit f7d49bce8e741e1e6aa14ce4db1b6cea7e4be4e8
Author: Jiri Benc <jb...@redhat.com>
Date: Fri Sep 30 19:08:05 2016 +0200
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 <jb...@redhat.com>
Acked-by: Pravin B Shelar <pshe...@ovn.org>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Yi-Hung Wei <yihung....@gmail.com>
---
datapath/flow.c | 11 +++--------
1 file changed, 3 insertions(+), 8 deletions(-)
diff --git a/datapath/flow.c b/datapath/flow.c
index 2bc1ad0d5304..1d40b2400406 100644
--- a/datapath/flow.c
+++ b/datapath/flow.c
@@ -666,12 +666,7 @@ 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;
@@ -679,12 +674,12 @@ 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;
--
2.7.4
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