[mirror_ubuntu-bionic-kernel.git] / include / net / ping.h

/*
 * 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.
 *
 *		This program is free software; you can redistribute it and/or
 *		modify it under the terms of the GNU General Public License
 *		as published by the Free Software Foundation; either version
 *		2 of the License, or (at your option) any later version.
 */
#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)

#define ping_portaddr_for_each_entry(__sk, node, list) \
	hlist_nulls_for_each_entry(__sk, node, list, sk_nulls_node)

/*
 * 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);
	int (*ip6_datagram_recv_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_table {
	struct hlist_nulls_head	hash[PING_HTABLE_SIZE];
	rwlock_t		lock;
};

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

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

struct pingfakehdr {
	struct icmphdr icmph;
	struct iovec *iov;
	sa_family_t family;
	__wsum wcheck;
};

int  ping_get_port(struct sock *sk, unsigned short ident);
void 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 kiocb *iocb, struct sock *sk, struct msghdr *msg,
		  size_t len, int noblock, 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_v4_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
		     size_t len);
int  ping_v6_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
		     size_t len);
int  ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb);
void ping_rcv(struct sk_buff *skb);

#ifdef CONFIG_PROC_FS
struct ping_seq_afinfo {
	char				*name;
	sa_family_t			family;
	const struct file_operations	*seq_fops;
	const struct seq_operations	seq_ops;
};

extern const struct file_operations ping_seq_fops;

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 ping_proc_register(struct net *net, struct ping_seq_afinfo *afinfo);
void ping_proc_unregister(struct net *net, struct ping_seq_afinfo *afinfo);

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
c319b4d7 VK	1	/*
	2	* INET An implementation of the TCP/IP protocol suite for the LINUX
	3	* operating system. INET is implemented using the BSD Socket
	4	* interface as the means of communication with the user level.
	5	*
	6	* Definitions for the "ping" module.
	7	*
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License
	10	* as published by the Free Software Foundation; either version
	11	* 2 of the License, or (at your option) any later version.
	12	*/
	13	#ifndef _PING_H
	14	#define _PING_H
	15
6d0bfe22	16	#include <net/icmp.h>
c319b4d7 VK	17	#include <net/netns/hash.h>
	18
	19	/* PING_HTABLE_SIZE must be power of 2 */
	20	#define PING_HTABLE_SIZE 64
	21	#define PING_HTABLE_MASK (PING_HTABLE_SIZE-1)
	22
	23	#define ping_portaddr_for_each_entry(__sk, node, list) \
	24	hlist_nulls_for_each_entry(__sk, node, list, sk_nulls_node)
	25
	26	/*
	27	* gid_t is either uint or ushort. We want to pass it to
	28	* proc_dointvec_minmax(), so it must not be larger than MAX_INT
	29	*/
	30	#define GID_T_MAX (((gid_t)~0U) >> 1)
	31
6d0bfe22 LC	32	/* Compatibility glue so we can support IPv6 when it's compiled as a module */
6d0bfe22 LC	33	struct pingv6_ops {
85fbaa75 HFS	34	int (ipv6_recv_error)(struct sock sk, struct msghdr *msg, int len,
85fbaa75 HFS	35	int *addr_len);
6d0bfe22 LC	36	int (ip6_datagram_recv_ctl)(struct sock sk, struct msghdr *msg,
	37	struct sk_buff *skb);
	38	int (icmpv6_err_convert)(u8 type, u8 code, int err);
	39	void (ipv6_icmp_error)(struct sock sk, struct sk_buff *skb, int err,
	40	__be16 port, u32 info, u8 *payload);
	41	int (ipv6_chk_addr)(struct net net, const struct in6_addr *addr,
6bc19fb8	42	const struct net_device *dev, int strict);
6d0bfe22 LC	43	};
6d0bfe22 LC	44
c319b4d7 VK	45	struct ping_table {
	46	struct hlist_nulls_head hash[PING_HTABLE_SIZE];
	47	rwlock_t lock;
	48	};
	49
	50	struct ping_iter_state {
	51	struct seq_net_private p;
	52	int bucket;
8cc785f6	53	sa_family_t family;
c319b4d7 VK	54	};
	55
	56	extern struct proto ping_prot;
6d0bfe22 LC	57	extern struct ping_table ping_table;
	58	#if IS_ENABLED(CONFIG_IPV6)
	59	extern struct pingv6_ops pingv6_ops;
	60	#endif
c319b4d7	61
6d0bfe22 LC	62	struct pingfakehdr {
	63	struct icmphdr icmph;
	64	struct iovec *iov;
	65	sa_family_t family;
	66	__wsum wcheck;
	67	};
c319b4d7	68
6d0bfe22 LC	69	int ping_get_port(struct sock *sk, unsigned short ident);
	70	void ping_hash(struct sock *sk);
	71	void ping_unhash(struct sock *sk);
	72
	73	int ping_init_sock(struct sock *sk);
	74	void ping_close(struct sock *sk, long timeout);
	75	int ping_bind(struct sock sk, struct sockaddr uaddr, int addr_len);
	76	void ping_err(struct sk_buff *skb, int offset, u32 info);
	77	int ping_getfrag(void from, char to, int offset, int fraglen, int odd,
	78	struct sk_buff *);
	79
	80	int ping_recvmsg(struct kiocb iocb, struct sock sk, struct msghdr *msg,
	81	size_t len, int noblock, int flags, int *addr_len);
	82	int ping_common_sendmsg(int family, struct msghdr *msg, size_t len,
	83	void *user_icmph, size_t icmph_len);
	84	int ping_v4_sendmsg(struct kiocb iocb, struct sock sk, struct msghdr *msg,
	85	size_t len);
	86	int ping_v6_sendmsg(struct kiocb iocb, struct sock sk, struct msghdr *msg,
	87	size_t len);
	88	int ping_queue_rcv_skb(struct sock sk, struct sk_buff skb);
	89	void ping_rcv(struct sk_buff *skb);
c319b4d7	90
c319b4d7	91	#ifdef CONFIG_PROC_FS
8cc785f6 LC	92	struct ping_seq_afinfo {
	93	char *name;
	94	sa_family_t family;
	95	const struct file_operations *seq_fops;
	96	const struct seq_operations seq_ops;
	97	};
	98
d862e546 LC	99	extern const struct file_operations ping_seq_fops;
	100
	101	void ping_seq_start(struct seq_file seq, loff_t *pos, sa_family_t family);
	102	void ping_seq_next(struct seq_file seq, void v, loff_t pos);
	103	void ping_seq_stop(struct seq_file seq, void v);
	104	int ping_proc_register(struct net net, struct ping_seq_afinfo afinfo);
	105	void ping_proc_unregister(struct net net, struct ping_seq_afinfo afinfo);
	106
6d3b334d JP	107	int __init ping_proc_init(void);
6d3b334d JP	108	void ping_proc_exit(void);
c319b4d7 VK	109	#endif
	110
	111	void __init ping_init(void);
6d0bfe22 LC	112	int __init pingv6_init(void);
6d0bfe22 LC	113	void pingv6_exit(void);
c319b4d7 VK	114
c319b4d7 VK	115	#endif /* _PING_H */