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 <linux/spinlock.h> |
9 | #include <net/sock.h> |
10 | |
11 | extern spinlock_t reuseport_lock; |
12 | |
13 | struct sock_reuseport { |
14 | struct rcu_head rcu; |
15 | |
16 | u16 max_socks; /* length of socks */ |
17 | u16 num_socks; /* elements in socks */ |
18 | /* The last synq overflow event timestamp of this |
19 | * reuse->socks[] group. |
20 | */ |
21 | unsigned int synq_overflow_ts; |
22 | /* ID stays the same even after the size of socks[] grows. */ |
23 | unsigned int reuseport_id; |
24 | bool bind_inany; |
25 | struct bpf_prog __rcu *prog; /* optional BPF sock selector */ |
26 | struct sock *socks[0]; /* array of sock pointers */ |
27 | }; |
28 | |
29 | extern int reuseport_alloc(struct sock *sk, bool bind_inany); |
30 | extern int reuseport_add_sock(struct sock *sk, struct sock *sk2, |
31 | bool bind_inany); |
32 | extern void reuseport_detach_sock(struct sock *sk); |
33 | extern struct sock *reuseport_select_sock(struct sock *sk, |
34 | u32 hash, |
35 | struct sk_buff *skb, |
36 | int hdr_len); |
37 | extern int reuseport_attach_prog(struct sock *sk, struct bpf_prog *prog); |
38 | int reuseport_get_id(struct sock_reuseport *reuse); |
39 | |
40 | #endif /* _SOCK_REUSEPORT_H */ |
41 | |