[linux-block.git] / include / net / ping.h

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * INET		An implementation of the TCP/IP protocol suite for the LINUX
 *		operating system.  INET is implemented using the  BSD Socket
 *		interface as the means of communication with the user level.
 *
 *		Definitions for the "ping" module.
 */
#ifndef _PING_H
#define _PING_H

#include <net/icmp.h>
#include <net/netns/hash.h>

/* PING_HTABLE_SIZE must be power of 2 */
#define PING_HTABLE_SIZE 	64
#define PING_HTABLE_MASK 	(PING_HTABLE_SIZE-1)

/*
 * gid_t is either uint or ushort.  We want to pass it to
 * proc_dointvec_minmax(), so it must not be larger than MAX_INT
 */
#define GID_T_MAX (((gid_t)~0U) >> 1)

/* Compatibility glue so we can support IPv6 when it's compiled as a module */
struct pingv6_ops {
	int (*ipv6_recv_error)(struct sock *sk, struct msghdr *msg, int len,
			       int *addr_len);
	void (*ip6_datagram_recv_common_ctl)(struct sock *sk,
					     struct msghdr *msg,
					     struct sk_buff *skb);
	void (*ip6_datagram_recv_specific_ctl)(struct sock *sk,
					       struct msghdr *msg,
					       struct sk_buff *skb);
	int (*icmpv6_err_convert)(u8 type, u8 code, int *err);
	void (*ipv6_icmp_error)(struct sock *sk, struct sk_buff *skb, int err,
				__be16 port, u32 info, u8 *payload);
	int (*ipv6_chk_addr)(struct net *net, const struct in6_addr *addr,
			     const struct net_device *dev, int strict);
};

struct ping_iter_state {
	struct seq_net_private  p;
	int			bucket;
	sa_family_t		family;
};

extern struct proto ping_prot;
#if IS_ENABLED(CONFIG_IPV6)
extern struct pingv6_ops pingv6_ops;
#endif

struct pingfakehdr {
	struct icmphdr icmph;
	struct msghdr *msg;
	sa_family_t family;
	__wsum wcheck;
};

int  ping_get_port(struct sock *sk, unsigned short ident);
int ping_hash(struct sock *sk);
void ping_unhash(struct sock *sk);

int  ping_init_sock(struct sock *sk);
void ping_close(struct sock *sk, long timeout);
int  ping_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len);
void ping_err(struct sk_buff *skb, int offset, u32 info);
int  ping_getfrag(void *from, char *to, int offset, int fraglen, int odd,
		  struct sk_buff *);

int  ping_recvmsg(struct sock *sk, struct msghdr *msg, size_t len,
		  int flags, int *addr_len);
int  ping_common_sendmsg(int family, struct msghdr *msg, size_t len,
			 void *user_icmph, size_t icmph_len);
int  ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb);
enum skb_drop_reason ping_rcv(struct sk_buff *skb);

#ifdef CONFIG_PROC_FS
void *ping_seq_start(struct seq_file *seq, loff_t *pos, sa_family_t family);
void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos);
void ping_seq_stop(struct seq_file *seq, void *v);

int __init ping_proc_init(void);
void ping_proc_exit(void);
#endif

void __init ping_init(void);
int  __init pingv6_init(void);
void pingv6_exit(void);

#endif /* _PING_H */
Commit	Line	Data
2874c5fd	1	/* SPDX-License-Identifier: GPL-2.0-or-later */
c319b4d7 VK	2	/*
	3	* INET An implementation of the TCP/IP protocol suite for the LINUX
	4	* operating system. INET is implemented using the BSD Socket
	5	* interface as the means of communication with the user level.
	6	*
	7	* Definitions for the "ping" module.
c319b4d7 VK	8	*/
	9	#ifndef _PING_H
	10	#define _PING_H
	11
6d0bfe22	12	#include <net/icmp.h>
c319b4d7 VK	13	#include <net/netns/hash.h>
	14
	15	/* PING_HTABLE_SIZE must be power of 2 */
	16	#define PING_HTABLE_SIZE 64
	17	#define PING_HTABLE_MASK (PING_HTABLE_SIZE-1)
	18
c319b4d7 VK	19	/*
	20	* gid_t is either uint or ushort. We want to pass it to
	21	* proc_dointvec_minmax(), so it must not be larger than MAX_INT
	22	*/
	23	#define GID_T_MAX (((gid_t)~0U) >> 1)
	24
6d0bfe22 LC	25	/* Compatibility glue so we can support IPv6 when it's compiled as a module */
6d0bfe22 LC	26	struct pingv6_ops {
85fbaa75 HFS	27	int (ipv6_recv_error)(struct sock sk, struct msghdr *msg, int len,
85fbaa75 HFS	28	int *addr_len);
4b261c75 HFS	29	void (ip6_datagram_recv_common_ctl)(struct sock sk,
	30	struct msghdr *msg,
	31	struct sk_buff *skb);
	32	void (ip6_datagram_recv_specific_ctl)(struct sock sk,
	33	struct msghdr *msg,
	34	struct sk_buff *skb);
6d0bfe22 LC	35	int (icmpv6_err_convert)(u8 type, u8 code, int err);
	36	void (ipv6_icmp_error)(struct sock sk, struct sk_buff *skb, int err,
	37	__be16 port, u32 info, u8 *payload);
	38	int (ipv6_chk_addr)(struct net net, const struct in6_addr *addr,
6bc19fb8	39	const struct net_device *dev, int strict);
6d0bfe22 LC	40	};
6d0bfe22 LC	41
c319b4d7 VK	42	struct ping_iter_state {
	43	struct seq_net_private p;
	44	int bucket;
8cc785f6	45	sa_family_t family;
c319b4d7 VK	46	};
	47
	48	extern struct proto ping_prot;
6d0bfe22 LC	49	#if IS_ENABLED(CONFIG_IPV6)
	50	extern struct pingv6_ops pingv6_ops;
	51	#endif
c319b4d7	52
6d0bfe22 LC	53	struct pingfakehdr {
6d0bfe22 LC	54	struct icmphdr icmph;
cacdc7d2	55	struct msghdr *msg;
6d0bfe22 LC	56	sa_family_t family;
	57	__wsum wcheck;
	58	};
c319b4d7	59
6d0bfe22	60	int ping_get_port(struct sock *sk, unsigned short ident);
086c653f	61	int ping_hash(struct sock *sk);
6d0bfe22 LC	62	void ping_unhash(struct sock *sk);
	63
	64	int ping_init_sock(struct sock *sk);
	65	void ping_close(struct sock *sk, long timeout);
	66	int ping_bind(struct sock sk, struct sockaddr uaddr, int addr_len);
	67	void ping_err(struct sk_buff *skb, int offset, u32 info);
	68	int ping_getfrag(void from, char to, int offset, int fraglen, int odd,
	69	struct sk_buff *);
	70
ec095263	71	int ping_recvmsg(struct sock sk, struct msghdr msg, size_t len,
1b784140	72	int flags, int *addr_len);
6d0bfe22 LC	73	int ping_common_sendmsg(int family, struct msghdr *msg, size_t len,
6d0bfe22 LC	74	void *user_icmph, size_t icmph_len);
6d0bfe22	75	int ping_queue_rcv_skb(struct sock sk, struct sk_buff skb);
b384c95a	76	enum skb_drop_reason ping_rcv(struct sk_buff *skb);
c319b4d7	77
c319b4d7	78	#ifdef CONFIG_PROC_FS
d862e546 LC	79	void ping_seq_start(struct seq_file seq, loff_t *pos, sa_family_t family);
	80	void ping_seq_next(struct seq_file seq, void v, loff_t pos);
	81	void ping_seq_stop(struct seq_file seq, void v);
d862e546	82
6d3b334d JP	83	int __init ping_proc_init(void);
6d3b334d JP	84	void ping_proc_exit(void);
c319b4d7 VK	85	#endif
	86
	87	void __init ping_init(void);
6d0bfe22 LC	88	int __init pingv6_init(void);
6d0bfe22 LC	89	void pingv6_exit(void);
c319b4d7 VK	90
c319b4d7 VK	91	#endif /* _PING_H */