X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fnet%2Fflow_keys.h;h=6667a054763adfad3407d59d0f6810fb13f56a14;hb=99eef8e9369abe009006b4fa7f6ca5086c09cf46;hp=7e64bd8bbda941319b494bcb7b66e79b7f52370a;hpb=b8969ef5cfa7859dbe6ac74debfd2d884d9fe14c;p=firefly-linux-kernel-4.4.55.git

diff --git a/include/net/flow_keys.h b/include/net/flow_keys.h
index 7e64bd8bbda9..6667a054763a 100644
--- a/include/net/flow_keys.h
+++ b/include/net/flow_keys.h
@@ -1,6 +1,19 @@
 #ifndef _NET_FLOW_KEYS_H
 #define _NET_FLOW_KEYS_H
 
+/* struct flow_keys:
+ *	@src: source ip address in case of IPv4
+ *	      For IPv6 it contains 32bit hash of src address
+ *	@dst: destination ip address in case of IPv4
+ *	      For IPv6 it contains 32bit hash of dst address
+ *	@ports: port numbers of Transport header
+ *		port16[0]: src port number
+ *		port16[1]: dst port number
+ *	@thoff: Transport header offset
+ *	@n_proto: Network header protocol (eg. IPv4/IPv6)
+ *	@ip_proto: Transport header protocol (eg. TCP/UDP)
+ * All the members, except thoff, are in network byte order.
+ */
 struct flow_keys {
 	/* (src,dst) must be grouped, in the same way than in IP header */
 	__be32 src;
@@ -10,9 +23,11 @@ struct flow_keys {
 		__be16 port16[2];
 	};
 	u16 thoff;
+	u16 n_proto;
 	u8 ip_proto;
 };
 
 bool skb_flow_dissect(const struct sk_buff *skb, struct flow_keys *flow);
 __be32 skb_flow_get_ports(const struct sk_buff *skb, int thoff, u8 ip_proto);
+u32 flow_hash_from_keys(struct flow_keys *keys);
 #endif