include/net/sock_reuseport.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _SOCK_REUSEPORT_H
   3 #define _SOCK_REUSEPORT_H
   4
   5 #include <linux/filter.h>
   6 #include <linux/skbuff.h>
   7 #include <linux/types.h>
   8 #include <net/sock.h>
   9
  10 struct sock_reuseport {
  11         struct rcu_head         rcu;
  12
  13         u16                     max_socks;      /* length of socks */
  14         u16                     num_socks;      /* elements in socks */
  15         struct bpf_prog __rcu   *prog;          /* optional BPF sock selector */
  16         struct sock             *socks[0];      /* array of sock pointers */
  17 };
  18
  19 extern int reuseport_alloc(struct sock *sk);
  20 extern int reuseport_add_sock(struct sock *sk, struct sock *sk2);
  21 extern void reuseport_detach_sock(struct sock *sk);
  22 extern struct sock *reuseport_select_sock(struct sock *sk,
  23                                           u32 hash,
  24                                           struct sk_buff *skb,
  25                                           int hdr_len);
  26 extern struct bpf_prog *reuseport_attach_prog(struct sock *sk,
  27                                               struct bpf_prog *prog);
  28
  29 #endif  /* _SOCK_REUSEPORT_H */