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Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
ef456144 CG |
2 | #ifndef _SOCK_REUSEPORT_H |
3 | #define _SOCK_REUSEPORT_H | |
4 | ||
538950a1 CG |
5 | #include <linux/filter.h> |
6 | #include <linux/skbuff.h> | |
ef456144 | 7 | #include <linux/types.h> |
736b4602 | 8 | #include <linux/spinlock.h> |
ef456144 CG |
9 | #include <net/sock.h> |
10 | ||
736b4602 MKL |
11 | extern spinlock_t reuseport_lock; |
12 | ||
ef456144 CG |
13 | struct sock_reuseport { |
14 | struct rcu_head rcu; | |
15 | ||
16 | u16 max_socks; /* length of socks */ | |
17 | u16 num_socks; /* elements in socks */ | |
40a1227e MKL |
18 | /* The last synq overflow event timestamp of this |
19 | * reuse->socks[] group. | |
20 | */ | |
21 | unsigned int synq_overflow_ts; | |
736b4602 MKL |
22 | /* ID stays the same even after the size of socks[] grows. */ |
23 | unsigned int reuseport_id; | |
acdcecc6 WB |
24 | unsigned int bind_inany:1; |
25 | unsigned int has_conns:1; | |
538950a1 | 26 | struct bpf_prog __rcu *prog; /* optional BPF sock selector */ |
2603c29e | 27 | struct sock *socks[]; /* array of sock pointers */ |
ef456144 CG |
28 | }; |
29 | ||
2dbb9b9e MKL |
30 | extern int reuseport_alloc(struct sock *sk, bool bind_inany); |
31 | extern int reuseport_add_sock(struct sock *sk, struct sock *sk2, | |
32 | bool bind_inany); | |
ef456144 | 33 | extern void reuseport_detach_sock(struct sock *sk); |
538950a1 CG |
34 | extern struct sock *reuseport_select_sock(struct sock *sk, |
35 | u32 hash, | |
36 | struct sk_buff *skb, | |
37 | int hdr_len); | |
8217ca65 | 38 | extern int reuseport_attach_prog(struct sock *sk, struct bpf_prog *prog); |
99f3a064 MKL |
39 | extern int reuseport_detach_prog(struct sock *sk); |
40 | ||
acdcecc6 WB |
41 | static inline bool reuseport_has_conns(struct sock *sk, bool set) |
42 | { | |
43 | struct sock_reuseport *reuse; | |
44 | bool ret = false; | |
45 | ||
46 | rcu_read_lock(); | |
47 | reuse = rcu_dereference(sk->sk_reuseport_cb); | |
48 | if (reuse) { | |
49 | if (set) | |
50 | reuse->has_conns = 1; | |
51 | ret = reuse->has_conns; | |
52 | } | |
53 | rcu_read_unlock(); | |
54 | ||
55 | return ret; | |
56 | } | |
57 | ||
ef456144 | 58 | #endif /* _SOCK_REUSEPORT_H */ |