64 lines
1.7 KiB
C
64 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _SOCK_REUSEPORT_H
|
|
#define _SOCK_REUSEPORT_H
|
|
|
|
#include <linux/filter.h>
|
|
#include <linux/skbuff.h>
|
|
#include <linux/types.h>
|
|
#include <linux/spinlock.h>
|
|
#include <net/sock.h>
|
|
|
|
extern spinlock_t reuseport_lock;
|
|
|
|
struct sock_reuseport {
|
|
struct rcu_head rcu;
|
|
|
|
u16 max_socks; /* length of socks */
|
|
u16 num_socks; /* elements in socks */
|
|
u16 num_closed_socks; /* closed elements in socks */
|
|
/* The last synq overflow event timestamp of this
|
|
* reuse->socks[] group.
|
|
*/
|
|
unsigned int synq_overflow_ts;
|
|
/* ID stays the same even after the size of socks[] grows. */
|
|
unsigned int reuseport_id;
|
|
unsigned int bind_inany:1;
|
|
unsigned int has_conns:1;
|
|
struct bpf_prog __rcu *prog; /* optional BPF sock selector */
|
|
struct sock *socks[]; /* array of sock pointers */
|
|
};
|
|
|
|
extern int reuseport_alloc(struct sock *sk, bool bind_inany);
|
|
extern int reuseport_add_sock(struct sock *sk, struct sock *sk2,
|
|
bool bind_inany);
|
|
extern void reuseport_detach_sock(struct sock *sk);
|
|
void reuseport_stop_listen_sock(struct sock *sk);
|
|
extern struct sock *reuseport_select_sock(struct sock *sk,
|
|
u32 hash,
|
|
struct sk_buff *skb,
|
|
int hdr_len);
|
|
struct sock *reuseport_migrate_sock(struct sock *sk,
|
|
struct sock *migrating_sk,
|
|
struct sk_buff *skb);
|
|
extern int reuseport_attach_prog(struct sock *sk, struct bpf_prog *prog);
|
|
extern int reuseport_detach_prog(struct sock *sk);
|
|
|
|
static inline bool reuseport_has_conns(struct sock *sk, bool set)
|
|
{
|
|
struct sock_reuseport *reuse;
|
|
bool ret = false;
|
|
|
|
rcu_read_lock();
|
|
reuse = rcu_dereference(sk->sk_reuseport_cb);
|
|
if (reuse) {
|
|
if (set)
|
|
reuse->has_conns = 1;
|
|
ret = reuse->has_conns;
|
|
}
|
|
rcu_read_unlock();
|
|
|
|
return ret;
|
|
}
|
|
|
|
#endif /* _SOCK_REUSEPORT_H */
|