mirror of https://gitee.com/openkylin/linux.git
33 lines
953 B
C
33 lines
953 B
C
#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);
|
|
#endif
|