1c319b4d7SVasiliy Kulikov /* 2c319b4d7SVasiliy Kulikov * INET An implementation of the TCP/IP protocol suite for the LINUX 3c319b4d7SVasiliy Kulikov * operating system. INET is implemented using the BSD Socket 4c319b4d7SVasiliy Kulikov * interface as the means of communication with the user level. 5c319b4d7SVasiliy Kulikov * 6c319b4d7SVasiliy Kulikov * Definitions for the "ping" module. 7c319b4d7SVasiliy Kulikov * 8c319b4d7SVasiliy Kulikov * This program is free software; you can redistribute it and/or 9c319b4d7SVasiliy Kulikov * modify it under the terms of the GNU General Public License 10c319b4d7SVasiliy Kulikov * as published by the Free Software Foundation; either version 11c319b4d7SVasiliy Kulikov * 2 of the License, or (at your option) any later version. 12c319b4d7SVasiliy Kulikov */ 13c319b4d7SVasiliy Kulikov #ifndef _PING_H 14c319b4d7SVasiliy Kulikov #define _PING_H 15c319b4d7SVasiliy Kulikov 166d0bfe22SLorenzo Colitti #include <net/icmp.h> 17c319b4d7SVasiliy Kulikov #include <net/netns/hash.h> 18c319b4d7SVasiliy Kulikov 19c319b4d7SVasiliy Kulikov /* PING_HTABLE_SIZE must be power of 2 */ 20c319b4d7SVasiliy Kulikov #define PING_HTABLE_SIZE 64 21c319b4d7SVasiliy Kulikov #define PING_HTABLE_MASK (PING_HTABLE_SIZE-1) 22c319b4d7SVasiliy Kulikov 23c319b4d7SVasiliy Kulikov #define ping_portaddr_for_each_entry(__sk, node, list) \ 24c319b4d7SVasiliy Kulikov hlist_nulls_for_each_entry(__sk, node, list, sk_nulls_node) 25c319b4d7SVasiliy Kulikov 26c319b4d7SVasiliy Kulikov /* 27c319b4d7SVasiliy Kulikov * gid_t is either uint or ushort. We want to pass it to 28c319b4d7SVasiliy Kulikov * proc_dointvec_minmax(), so it must not be larger than MAX_INT 29c319b4d7SVasiliy Kulikov */ 30c319b4d7SVasiliy Kulikov #define GID_T_MAX (((gid_t)~0U) >> 1) 31c319b4d7SVasiliy Kulikov 326d0bfe22SLorenzo Colitti /* Compatibility glue so we can support IPv6 when it's compiled as a module */ 336d0bfe22SLorenzo Colitti struct pingv6_ops { 3485fbaa75SHannes Frederic Sowa int (*ipv6_recv_error)(struct sock *sk, struct msghdr *msg, int len, 3585fbaa75SHannes Frederic Sowa int *addr_len); 366d0bfe22SLorenzo Colitti int (*ip6_datagram_recv_ctl)(struct sock *sk, struct msghdr *msg, 376d0bfe22SLorenzo Colitti struct sk_buff *skb); 386d0bfe22SLorenzo Colitti int (*icmpv6_err_convert)(u8 type, u8 code, int *err); 396d0bfe22SLorenzo Colitti void (*ipv6_icmp_error)(struct sock *sk, struct sk_buff *skb, int err, 406d0bfe22SLorenzo Colitti __be16 port, u32 info, u8 *payload); 416d0bfe22SLorenzo Colitti int (*ipv6_chk_addr)(struct net *net, const struct in6_addr *addr, 426bc19fb8SDavid S. Miller const struct net_device *dev, int strict); 436d0bfe22SLorenzo Colitti }; 446d0bfe22SLorenzo Colitti 45c319b4d7SVasiliy Kulikov struct ping_table { 46c319b4d7SVasiliy Kulikov struct hlist_nulls_head hash[PING_HTABLE_SIZE]; 47c319b4d7SVasiliy Kulikov rwlock_t lock; 48c319b4d7SVasiliy Kulikov }; 49c319b4d7SVasiliy Kulikov 50c319b4d7SVasiliy Kulikov struct ping_iter_state { 51c319b4d7SVasiliy Kulikov struct seq_net_private p; 52c319b4d7SVasiliy Kulikov int bucket; 538cc785f6SLorenzo Colitti sa_family_t family; 54c319b4d7SVasiliy Kulikov }; 55c319b4d7SVasiliy Kulikov 56c319b4d7SVasiliy Kulikov extern struct proto ping_prot; 576d0bfe22SLorenzo Colitti extern struct ping_table ping_table; 586d0bfe22SLorenzo Colitti #if IS_ENABLED(CONFIG_IPV6) 596d0bfe22SLorenzo Colitti extern struct pingv6_ops pingv6_ops; 606d0bfe22SLorenzo Colitti #endif 61c319b4d7SVasiliy Kulikov 626d0bfe22SLorenzo Colitti struct pingfakehdr { 636d0bfe22SLorenzo Colitti struct icmphdr icmph; 646d0bfe22SLorenzo Colitti struct iovec *iov; 656d0bfe22SLorenzo Colitti sa_family_t family; 666d0bfe22SLorenzo Colitti __wsum wcheck; 676d0bfe22SLorenzo Colitti }; 68c319b4d7SVasiliy Kulikov 696d0bfe22SLorenzo Colitti int ping_get_port(struct sock *sk, unsigned short ident); 706d0bfe22SLorenzo Colitti void ping_hash(struct sock *sk); 716d0bfe22SLorenzo Colitti void ping_unhash(struct sock *sk); 726d0bfe22SLorenzo Colitti 736d0bfe22SLorenzo Colitti int ping_init_sock(struct sock *sk); 746d0bfe22SLorenzo Colitti void ping_close(struct sock *sk, long timeout); 756d0bfe22SLorenzo Colitti int ping_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len); 766d0bfe22SLorenzo Colitti void ping_err(struct sk_buff *skb, int offset, u32 info); 776d0bfe22SLorenzo Colitti int ping_getfrag(void *from, char *to, int offset, int fraglen, int odd, 786d0bfe22SLorenzo Colitti struct sk_buff *); 796d0bfe22SLorenzo Colitti 806d0bfe22SLorenzo Colitti int ping_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, 816d0bfe22SLorenzo Colitti size_t len, int noblock, int flags, int *addr_len); 826d0bfe22SLorenzo Colitti int ping_common_sendmsg(int family, struct msghdr *msg, size_t len, 836d0bfe22SLorenzo Colitti void *user_icmph, size_t icmph_len); 846d0bfe22SLorenzo Colitti int ping_v4_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, 856d0bfe22SLorenzo Colitti size_t len); 866d0bfe22SLorenzo Colitti int ping_v6_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, 876d0bfe22SLorenzo Colitti size_t len); 886d0bfe22SLorenzo Colitti int ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb); 896d0bfe22SLorenzo Colitti void ping_rcv(struct sk_buff *skb); 90c319b4d7SVasiliy Kulikov 91c319b4d7SVasiliy Kulikov #ifdef CONFIG_PROC_FS 928cc785f6SLorenzo Colitti struct ping_seq_afinfo { 938cc785f6SLorenzo Colitti char *name; 948cc785f6SLorenzo Colitti sa_family_t family; 958cc785f6SLorenzo Colitti const struct file_operations *seq_fops; 968cc785f6SLorenzo Colitti const struct seq_operations seq_ops; 978cc785f6SLorenzo Colitti }; 988cc785f6SLorenzo Colitti 99d862e546SLorenzo Colitti extern const struct file_operations ping_seq_fops; 100d862e546SLorenzo Colitti 101d862e546SLorenzo Colitti void *ping_seq_start(struct seq_file *seq, loff_t *pos, sa_family_t family); 102d862e546SLorenzo Colitti void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos); 103d862e546SLorenzo Colitti void ping_seq_stop(struct seq_file *seq, void *v); 104d862e546SLorenzo Colitti int ping_proc_register(struct net *net, struct ping_seq_afinfo *afinfo); 105d862e546SLorenzo Colitti void ping_proc_unregister(struct net *net, struct ping_seq_afinfo *afinfo); 106d862e546SLorenzo Colitti 1076d3b334dSJoe Perches int __init ping_proc_init(void); 1086d3b334dSJoe Perches void ping_proc_exit(void); 109c319b4d7SVasiliy Kulikov #endif 110c319b4d7SVasiliy Kulikov 111c319b4d7SVasiliy Kulikov void __init ping_init(void); 1126d0bfe22SLorenzo Colitti int __init pingv6_init(void); 1136d0bfe22SLorenzo Colitti void pingv6_exit(void); 114c319b4d7SVasiliy Kulikov 115c319b4d7SVasiliy Kulikov #endif /* _PING_H */ 116