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[net-next,1/5] net/flow_dissector: Save vlan ethertype from headers

Message ID 20180630095317.5691-2-jianbol@mellanox.com
State Changes Requested, archived
Delegated to: David Miller
Headers show
Series Introduce matching on double vlan/QinQ headers for TC flower | expand

Commit Message

Jianbo Liu June 30, 2018, 9:53 a.m. UTC 
Change vlan dissector key to save vlan tpid to support both 802.1Q
and 802.1AD ethertype.

Signed-off-by: Jianbo Liu <jianbol@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
---
 include/net/flow_dissector.h | 2 +-
 net/core/flow_dissector.c    | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/include/net/flow_dissector.h b/include/net/flow_dissector.h
index adc24df5..8f89968 100644
--- a/include/net/flow_dissector.h
+++ b/include/net/flow_dissector.h
@@ -47,7 +47,7 @@  struct flow_dissector_key_tags {
 struct flow_dissector_key_vlan {
 	u16	vlan_id:12,
 		vlan_priority:3;
-	u16	padding;
+	__be16	vlan_tpid;
 };
 
 struct flow_dissector_key_mpls {
diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c
index 4fc1e84..e068ccf 100644
--- a/net/core/flow_dissector.c
+++ b/net/core/flow_dissector.c
@@ -751,6 +751,7 @@  bool __skb_flow_dissect(const struct sk_buff *skb,
 		const struct vlan_hdr *vlan;
 		struct vlan_hdr _vlan;
 		bool vlan_tag_present = skb && skb_vlan_tag_present(skb);
+		__be16 saved_vlan_tpid = proto;
 
 		if (vlan_tag_present)
 			proto = skb->protocol;
@@ -789,6 +790,7 @@  bool __skb_flow_dissect(const struct sk_buff *skb,
 					(ntohs(vlan->h_vlan_TCI) &
 					 VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT;
 			}
+			key_vlan->vlan_tpid = saved_vlan_tpid;
 		}
 
 		fdret = FLOW_DISSECT_RET_PROTO_AGAIN;