[thirdparty/kernel/stable.git] / include / net / sock_reuseport.h

/* 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 */
	/* 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;
	bool			bind_inany;
	struct bpf_prog __rcu	*prog;		/* optional BPF sock selector */
	struct sock		*socks[0];	/* 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);
extern struct sock *reuseport_select_sock(struct sock *sk,
					  u32 hash,
					  struct sk_buff *skb,
					  int hdr_len);
extern int reuseport_attach_prog(struct sock *sk, struct bpf_prog *prog);
int reuseport_get_id(struct sock_reuseport *reuse);

#endif  /* _SOCK_REUSEPORT_H */
Commit	Line	Data
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>
538950a1 CG	6	#include <linux/skbuff.h>
ef456144	7	#include <linux/types.h>
736b4602	8	#include <linux/spinlock.h>
ef456144 CG	9	#include <net/sock.h>
ef456144 CG	10
736b4602 MKL	11	extern spinlock_t reuseport_lock;
736b4602 MKL	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. */
736b4602 MKL	23	unsigned int reuseport_id;
2dbb9b9e	24	bool bind_inany;
538950a1	25	struct bpf_prog __rcu prog; / optional BPF sock selector */
ef456144 CG	26	struct sock socks[0]; / array of sock pointers */
	27	};
	28
2dbb9b9e MKL	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);
ef456144	32	extern void reuseport_detach_sock(struct sock *sk);
538950a1 CG	33	extern struct sock reuseport_select_sock(struct sock sk,
	34	u32 hash,
	35	struct sk_buff *skb,
	36	int hdr_len);
8217ca65	37	extern int reuseport_attach_prog(struct sock sk, struct bpf_prog prog);
736b4602	38	int reuseport_get_id(struct sock_reuseport *reuse);
ef456144 CG	39
ef456144 CG	40	#endif /* _SOCK_REUSEPORT_H */