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 */ 30