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/*
* 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 (*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,
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;
};
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);
void ping_v4_err(struct sk_buff *skb, 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
extern int __init ping_proc_init(void);
extern void ping_proc_exit(void);
#endif
void __init ping_init(void);
int __init pingv6_init(void);
void pingv6_exit(void);
#endif /* _PING_H */
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