| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 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 */ |