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Commit d34af823 authored by Tom Herbert's avatar Tom Herbert Committed by David S. Miller
Browse files

net: Add VLAN ID to flow_keys 



In flow_dissector set vlan_id in flow_keys when VLAN is found.

Signed-off-by: default avatarTom Herbert <tom@herbertland.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 45b47fd0

include/net/flow_dissector.h

+6 −0
Original line number Diff line number Diff line
@@ -27,6 +27,10 @@ struct flow_dissector_key_basic { 
	u8	padding;

};



struct flow_dissector_key_tags {

	u32	vlan_id:12;

};



/**

 * struct flow_dissector_key_ipv4_addrs:

 * @src: source ip address
@@ -106,6 +110,7 @@ enum flow_dissector_key_id { 
	FLOW_DISSECTOR_KEY_PORTS, /* struct flow_dissector_key_ports */

	FLOW_DISSECTOR_KEY_ETH_ADDRS, /* struct flow_dissector_key_eth_addrs */

	FLOW_DISSECTOR_KEY_TIPC_ADDRS, /* struct flow_dissector_key_tipc_addrs */

	FLOW_DISSECTOR_KEY_VLANID, /* struct flow_dissector_key_flow_tags */



	FLOW_DISSECTOR_KEY_MAX,

};
@@ -142,6 +147,7 @@ struct flow_keys { 
	struct flow_dissector_key_control control;

#define FLOW_KEYS_HASH_START_FIELD basic

	struct flow_dissector_key_basic basic;

	struct flow_dissector_key_tags tags;

	struct flow_dissector_key_ports ports;

	struct flow_dissector_key_addrs addrs;

};

net/core/flow_dissector.c

+14 −0
Original line number Diff line number Diff line
@@ -126,6 +126,7 @@ bool __skb_flow_dissect(const struct sk_buff *skb, 
	struct flow_dissector_key_basic *key_basic;

	struct flow_dissector_key_addrs *key_addrs;

	struct flow_dissector_key_ports *key_ports;

	struct flow_dissector_key_tags *key_tags;

	u8 ip_proto;



	if (!data) {
@@ -246,6 +247,15 @@ bool __skb_flow_dissect(const struct sk_buff *skb, 
		if (!vlan)

			return false;



		if (skb_flow_dissector_uses_key(flow_dissector,

						FLOW_DISSECTOR_KEY_VLANID)) {

			key_tags = skb_flow_dissector_target(flow_dissector,

							     FLOW_DISSECTOR_KEY_VLANID,

							     target_container);



			key_tags->vlan_id = skb_vlan_tag_get_id(skb);

		}



		proto = vlan->h_vlan_encapsulated_proto;

		nhoff += sizeof(*vlan);

		goto again;
@@ -645,6 +655,10 @@ static const struct flow_dissector_key flow_keys_dissector_keys[] = { 
		.key_id = FLOW_DISSECTOR_KEY_PORTS,

		.offset = offsetof(struct flow_keys, ports),

	},

	{

		.key_id = FLOW_DISSECTOR_KEY_VLANID,

		.offset = offsetof(struct flow_keys, tags),

	},

};



static const struct flow_dissector_key flow_keys_buf_dissector_keys[] = {