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 16#include <net/icmp.h> 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 32/* Compatibility glue so we can support IPv6 when it's compiled as a module */ 33struct pingv6_ops { 34 int (*ipv6_recv_error)(struct sock *sk, struct msghdr *msg, int len, 35 int *addr_len); 36 void (*ip6_datagram_recv_common_ctl)(struct sock *sk, 37 struct msghdr *msg, 38 struct sk_buff *skb); 39 void (*ip6_datagram_recv_specific_ctl)(struct sock *sk, 40 struct msghdr *msg, 41 struct sk_buff *skb); 42 int (*icmpv6_err_convert)(u8 type, u8 code, int *err); 43 void (*ipv6_icmp_error)(struct sock *sk, struct sk_buff *skb, int err, 44 __be16 port, u32 info, u8 *payload); 45 int (*ipv6_chk_addr)(struct net *net, const struct in6_addr *addr, 46 const struct net_device *dev, int strict); 47}; 48 49struct ping_iter_state { 50 struct seq_net_private p; 51 int bucket; 52 sa_family_t family; 53}; 54 55extern struct proto ping_prot; 56#if IS_ENABLED(CONFIG_IPV6) 57extern struct pingv6_ops pingv6_ops; 58#endif 59 60struct pingfakehdr { 61 struct icmphdr icmph; 62 struct iovec *iov; 63 sa_family_t family; 64 __wsum wcheck; 65}; 66 67int ping_get_port(struct sock *sk, unsigned short ident); 68void ping_hash(struct sock *sk); 69void ping_unhash(struct sock *sk); 70 71int ping_init_sock(struct sock *sk); 72void ping_close(struct sock *sk, long timeout); 73int ping_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len); 74void ping_err(struct sk_buff *skb, int offset, u32 info); 75int ping_getfrag(void *from, char *to, int offset, int fraglen, int odd, 76 struct sk_buff *); 77 78int ping_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, 79 size_t len, int noblock, int flags, int *addr_len); 80int ping_common_sendmsg(int family, struct msghdr *msg, size_t len, 81 void *user_icmph, size_t icmph_len); 82int ping_v6_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, 83 size_t len); 84int ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb); 85void ping_rcv(struct sk_buff *skb); 86 87#ifdef CONFIG_PROC_FS 88struct ping_seq_afinfo { 89 char *name; 90 sa_family_t family; 91 const struct file_operations *seq_fops; 92 const struct seq_operations seq_ops; 93}; 94 95extern const struct file_operations ping_seq_fops; 96 97void *ping_seq_start(struct seq_file *seq, loff_t *pos, sa_family_t family); 98void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos); 99void ping_seq_stop(struct seq_file *seq, void *v); 100int ping_proc_register(struct net *net, struct ping_seq_afinfo *afinfo); 101void ping_proc_unregister(struct net *net, struct ping_seq_afinfo *afinfo); 102 103int __init ping_proc_init(void); 104void ping_proc_exit(void); 105#endif 106 107void __init ping_init(void); 108int __init pingv6_init(void); 109void pingv6_exit(void); 110 111#endif /* _PING_H */ 112