12874c5fdSThomas Gleixner /* SPDX-License-Identifier: GPL-2.0-or-later */ 2c319b4d7SVasiliy Kulikov /* 3c319b4d7SVasiliy Kulikov * INET An implementation of the TCP/IP protocol suite for the LINUX 4c319b4d7SVasiliy Kulikov * operating system. INET is implemented using the BSD Socket 5c319b4d7SVasiliy Kulikov * interface as the means of communication with the user level. 6c319b4d7SVasiliy Kulikov * 7c319b4d7SVasiliy Kulikov * Definitions for the "ping" module. 8c319b4d7SVasiliy Kulikov */ 9c319b4d7SVasiliy Kulikov #ifndef _PING_H 10c319b4d7SVasiliy Kulikov #define _PING_H 11c319b4d7SVasiliy Kulikov 126d0bfe22SLorenzo Colitti #include <net/icmp.h> 13c319b4d7SVasiliy Kulikov #include <net/netns/hash.h> 14c319b4d7SVasiliy Kulikov 15c319b4d7SVasiliy Kulikov /* PING_HTABLE_SIZE must be power of 2 */ 16c319b4d7SVasiliy Kulikov #define PING_HTABLE_SIZE 64 17c319b4d7SVasiliy Kulikov #define PING_HTABLE_MASK (PING_HTABLE_SIZE-1) 18c319b4d7SVasiliy Kulikov 19*e209fee4SAkihiro Suda #define GID_T_MAX (((gid_t)~0U) - 1) 20c319b4d7SVasiliy Kulikov 216d0bfe22SLorenzo Colitti /* Compatibility glue so we can support IPv6 when it's compiled as a module */ 226d0bfe22SLorenzo Colitti struct pingv6_ops { 2385fbaa75SHannes Frederic Sowa int (*ipv6_recv_error)(struct sock *sk, struct msghdr *msg, int len, 2485fbaa75SHannes Frederic Sowa int *addr_len); 254b261c75SHannes Frederic Sowa void (*ip6_datagram_recv_common_ctl)(struct sock *sk, 264b261c75SHannes Frederic Sowa struct msghdr *msg, 274b261c75SHannes Frederic Sowa struct sk_buff *skb); 284b261c75SHannes Frederic Sowa void (*ip6_datagram_recv_specific_ctl)(struct sock *sk, 294b261c75SHannes Frederic Sowa struct msghdr *msg, 306d0bfe22SLorenzo Colitti struct sk_buff *skb); 316d0bfe22SLorenzo Colitti int (*icmpv6_err_convert)(u8 type, u8 code, int *err); 326d0bfe22SLorenzo Colitti void (*ipv6_icmp_error)(struct sock *sk, struct sk_buff *skb, int err, 336d0bfe22SLorenzo Colitti __be16 port, u32 info, u8 *payload); 346d0bfe22SLorenzo Colitti int (*ipv6_chk_addr)(struct net *net, const struct in6_addr *addr, 356bc19fb8SDavid S. Miller const struct net_device *dev, int strict); 366d0bfe22SLorenzo Colitti }; 376d0bfe22SLorenzo Colitti 38c319b4d7SVasiliy Kulikov struct ping_iter_state { 39c319b4d7SVasiliy Kulikov struct seq_net_private p; 40c319b4d7SVasiliy Kulikov int bucket; 418cc785f6SLorenzo Colitti sa_family_t family; 42c319b4d7SVasiliy Kulikov }; 43c319b4d7SVasiliy Kulikov 44c319b4d7SVasiliy Kulikov extern struct proto ping_prot; 456d0bfe22SLorenzo Colitti #if IS_ENABLED(CONFIG_IPV6) 466d0bfe22SLorenzo Colitti extern struct pingv6_ops pingv6_ops; 476d0bfe22SLorenzo Colitti #endif 48c319b4d7SVasiliy Kulikov 496d0bfe22SLorenzo Colitti struct pingfakehdr { 506d0bfe22SLorenzo Colitti struct icmphdr icmph; 51cacdc7d2SAl Viro struct msghdr *msg; 526d0bfe22SLorenzo Colitti sa_family_t family; 536d0bfe22SLorenzo Colitti __wsum wcheck; 546d0bfe22SLorenzo Colitti }; 55c319b4d7SVasiliy Kulikov 566d0bfe22SLorenzo Colitti int ping_get_port(struct sock *sk, unsigned short ident); 57086c653fSCraig Gallek int ping_hash(struct sock *sk); 586d0bfe22SLorenzo Colitti void ping_unhash(struct sock *sk); 596d0bfe22SLorenzo Colitti 606d0bfe22SLorenzo Colitti int ping_init_sock(struct sock *sk); 616d0bfe22SLorenzo Colitti void ping_close(struct sock *sk, long timeout); 626d0bfe22SLorenzo Colitti int ping_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len); 636d0bfe22SLorenzo Colitti void ping_err(struct sk_buff *skb, int offset, u32 info); 646d0bfe22SLorenzo Colitti int ping_getfrag(void *from, char *to, int offset, int fraglen, int odd, 656d0bfe22SLorenzo Colitti struct sk_buff *); 666d0bfe22SLorenzo Colitti 67ec095263SOliver Hartkopp int ping_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, 681b784140SYing Xue int flags, int *addr_len); 696d0bfe22SLorenzo Colitti int ping_common_sendmsg(int family, struct msghdr *msg, size_t len, 706d0bfe22SLorenzo Colitti void *user_icmph, size_t icmph_len); 716d0bfe22SLorenzo Colitti int ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb); 72b384c95aSMenglong Dong enum skb_drop_reason ping_rcv(struct sk_buff *skb); 73c319b4d7SVasiliy Kulikov 74c319b4d7SVasiliy Kulikov #ifdef CONFIG_PROC_FS 75d862e546SLorenzo Colitti void *ping_seq_start(struct seq_file *seq, loff_t *pos, sa_family_t family); 76d862e546SLorenzo Colitti void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos); 77d862e546SLorenzo Colitti void ping_seq_stop(struct seq_file *seq, void *v); 78d862e546SLorenzo Colitti 796d3b334dSJoe Perches int __init ping_proc_init(void); 806d3b334dSJoe Perches void ping_proc_exit(void); 81c319b4d7SVasiliy Kulikov #endif 82c319b4d7SVasiliy Kulikov 83c319b4d7SVasiliy Kulikov void __init ping_init(void); 846d0bfe22SLorenzo Colitti int __init pingv6_init(void); 856d0bfe22SLorenzo Colitti void pingv6_exit(void); 86c319b4d7SVasiliy Kulikov 87c319b4d7SVasiliy Kulikov #endif /* _PING_H */ 88