| #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; |
| __be32 dst; |
| union { |
| __be32 ports; |
| __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 |
