1/* SPDX-License-Identifier: GPL-2.0-or-later */ 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. 8 */ 9#ifndef _PING_H 10#define _PING_H 11 12#include <net/icmp.h> 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 19#define GID_T_MAX (((gid_t)~0U) - 1) 20 21/* Compatibility glue so we can support IPv6 when it's compiled as a module */ 22struct pingv6_ops { 23 int (*ipv6_recv_error)(struct sock *sk, struct msghdr *msg, int len, 24 int *addr_len); 25 void (*ip6_datagram_recv_common_ctl)(struct sock *sk, 26 struct msghdr *msg, 27 struct sk_buff *skb); 28 void (*ip6_datagram_recv_specific_ctl)(struct sock *sk, 29 struct msghdr *msg, 30 struct sk_buff *skb); 31 int (*icmpv6_err_convert)(u8 type, u8 code, int *err); 32 void (*ipv6_icmp_error)(struct sock *sk, struct sk_buff *skb, int err, 33 __be16 port, u32 info, u8 *payload); 34 int (*ipv6_chk_addr)(struct net *net, const struct in6_addr *addr, 35 const struct net_device *dev, int strict); 36}; 37 38struct ping_iter_state { 39 struct seq_net_private p; 40 int bucket; 41 sa_family_t family; 42}; 43 44extern struct proto ping_prot; 45#if IS_ENABLED(CONFIG_IPV6) 46extern struct pingv6_ops pingv6_ops; 47#endif 48 49struct pingfakehdr { 50 struct icmphdr icmph; 51 struct msghdr *msg; 52 sa_family_t family; 53 __wsum wcheck; 54}; 55 56int ping_get_port(struct sock *sk, unsigned short ident); 57int ping_hash(struct sock *sk); 58void ping_unhash(struct sock *sk); 59 60int ping_init_sock(struct sock *sk); 61void ping_close(struct sock *sk, long timeout); 62int ping_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len); 63void ping_err(struct sk_buff *skb, int offset, u32 info); 64int ping_getfrag(void *from, char *to, int offset, int fraglen, int odd, 65 struct sk_buff *); 66 67int ping_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, 68 int flags, int *addr_len); 69int ping_common_sendmsg(int family, struct msghdr *msg, size_t len, 70 void *user_icmph, size_t icmph_len); 71int ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb); 72enum skb_drop_reason ping_rcv(struct sk_buff *skb); 73 74#ifdef CONFIG_PROC_FS 75void *ping_seq_start(struct seq_file *seq, loff_t *pos, sa_family_t family); 76void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos); 77void ping_seq_stop(struct seq_file *seq, void *v); 78 79int __init ping_proc_init(void); 80void ping_proc_exit(void); 81#endif 82 83void __init ping_init(void); 84int __init pingv6_init(void); 85void pingv6_exit(void); 86 87#endif /* _PING_H */ 88