Eric Dumazet | 0744dd0 | 2011-11-28 05:22:18 +0000 | [diff] [blame] | 1 | #ifndef _NET_FLOW_KEYS_H |
| 2 | #define _NET_FLOW_KEYS_H |
| 3 | |
Govindarajulu Varadarajan | e0f31d8 | 2014-06-23 16:07:58 +0530 | [diff] [blame] | 4 | /* struct flow_keys: |
| 5 | * @src: source ip address in case of IPv4 |
| 6 | * For IPv6 it contains 32bit hash of src address |
| 7 | * @dst: destination ip address in case of IPv4 |
| 8 | * For IPv6 it contains 32bit hash of dst address |
| 9 | * @ports: port numbers of Transport header |
| 10 | * port16[0]: src port number |
| 11 | * port16[1]: dst port number |
| 12 | * @thoff: Transport header offset |
| 13 | * @n_proto: Network header protocol (eg. IPv4/IPv6) |
| 14 | * @ip_proto: Transport header protocol (eg. TCP/UDP) |
| 15 | * All the members, except thoff, are in network byte order. |
| 16 | */ |
Eric Dumazet | 0744dd0 | 2011-11-28 05:22:18 +0000 | [diff] [blame] | 17 | struct flow_keys { |
Eric Dumazet | 4d77d2b | 2011-11-28 20:30:35 +0000 | [diff] [blame] | 18 | /* (src,dst) must be grouped, in the same way than in IP header */ |
Eric Dumazet | 0744dd0 | 2011-11-28 05:22:18 +0000 | [diff] [blame] | 19 | __be32 src; |
| 20 | __be32 dst; |
| 21 | union { |
| 22 | __be32 ports; |
| 23 | __be16 port16[2]; |
| 24 | }; |
Daniel Borkmann | 8ed7816 | 2013-03-19 06:39:29 +0000 | [diff] [blame] | 25 | u16 thoff; |
Govindarajulu Varadarajan | e0f31d8 | 2014-06-23 16:07:58 +0530 | [diff] [blame] | 26 | u16 n_proto; |
Eric Dumazet | 0744dd0 | 2011-11-28 05:22:18 +0000 | [diff] [blame] | 27 | u8 ip_proto; |
| 28 | }; |
| 29 | |
Joe Perches | 4787342 | 2013-09-20 11:23:24 -0700 | [diff] [blame] | 30 | bool skb_flow_dissect(const struct sk_buff *skb, struct flow_keys *flow); |
Nikolay Aleksandrov | 357afe9 | 2013-10-02 13:39:24 +0200 | [diff] [blame] | 31 | __be32 skb_flow_get_ports(const struct sk_buff *skb, int thoff, u8 ip_proto); |
Tom Herbert | 5ed20a6 | 2014-07-01 21:32:05 -0700 | [diff] [blame] | 32 | u32 flow_hash_from_keys(struct flow_keys *keys); |
Eric Dumazet | 0744dd0 | 2011-11-28 05:22:18 +0000 | [diff] [blame] | 33 | #endif |