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 */ 33 struct pingv6_ops { 34 int (*ipv6_recv_error)(struct sock *sk, struct msghdr *msg, int len, 35 int *addr_len); 36 int (*ip6_datagram_recv_ctl)(struct sock *sk, struct msghdr *msg, 37 struct sk_buff *skb); 38 int (*icmpv6_err_convert)(u8 type, u8 code, int *err); 39 void (*ipv6_icmp_error)(struct sock *sk, struct sk_buff *skb, int err, 40 __be16 port, u32 info, u8 *payload); 41 int (*ipv6_chk_addr)(struct net *net, const struct in6_addr *addr, 42 const struct net_device *dev, int strict); 43 }; 44 45 struct ping_iter_state { 46 struct seq_net_private p; 47 int bucket; 48 sa_family_t family; 49 }; 50 51 extern struct proto ping_prot; 52 #if IS_ENABLED(CONFIG_IPV6) 53 extern struct pingv6_ops pingv6_ops; 54 #endif 55 56 struct pingfakehdr { 57 struct icmphdr icmph; 58 struct iovec *iov; 59 sa_family_t family; 60 __wsum wcheck; 61 }; 62 63 int ping_get_port(struct sock *sk, unsigned short ident); 64 void ping_hash(struct sock *sk); 65 void ping_unhash(struct sock *sk); 66 67 int ping_init_sock(struct sock *sk); 68 void ping_close(struct sock *sk, long timeout); 69 int ping_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len); 70 void ping_err(struct sk_buff *skb, int offset, u32 info); 71 int ping_getfrag(void *from, char *to, int offset, int fraglen, int odd, 72 struct sk_buff *); 73 74 int ping_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, 75 size_t len, int noblock, int flags, int *addr_len); 76 int ping_common_sendmsg(int family, struct msghdr *msg, size_t len, 77 void *user_icmph, size_t icmph_len); 78 int ping_v6_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, 79 size_t len); 80 int ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb); 81 void ping_rcv(struct sk_buff *skb); 82 83 #ifdef CONFIG_PROC_FS 84 struct ping_seq_afinfo { 85 char *name; 86 sa_family_t family; 87 const struct file_operations *seq_fops; 88 const struct seq_operations seq_ops; 89 }; 90 91 extern const struct file_operations ping_seq_fops; 92 93 void *ping_seq_start(struct seq_file *seq, loff_t *pos, sa_family_t family); 94 void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos); 95 void ping_seq_stop(struct seq_file *seq, void *v); 96 int ping_proc_register(struct net *net, struct ping_seq_afinfo *afinfo); 97 void ping_proc_unregister(struct net *net, struct ping_seq_afinfo *afinfo); 98 99 int __init ping_proc_init(void); 100 void ping_proc_exit(void); 101 #endif 102 103 void __init ping_init(void); 104 int __init pingv6_init(void); 105 void pingv6_exit(void); 106 107 #endif /* _PING_H */ 108