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.
6 * Definitions for the "ping" module.
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.
17 #include <net/netns/hash.h>
19 /* PING_HTABLE_SIZE must be power of 2 */
20 #define PING_HTABLE_SIZE 64
21 #define PING_HTABLE_MASK (PING_HTABLE_SIZE-1)
23 #define ping_portaddr_for_each_entry(__sk, node, list) \
24 hlist_nulls_for_each_entry(__sk, node, list, sk_nulls_node)
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
30 #define GID_T_MAX (((gid_t)~0U) >> 1)
32 /* Compatibility glue so we can support IPv6 when it's compiled as a module */
34 int (*ipv6_recv_error)(struct sock *sk, struct msghdr *msg, int len,
36 void (*ip6_datagram_recv_common_ctl)(struct sock *sk,
39 void (*ip6_datagram_recv_specific_ctl)(struct sock *sk,
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);
49 struct ping_iter_state {
50 struct seq_net_private p;
55 extern struct proto ping_prot;
56 #if IS_ENABLED(CONFIG_IPV6)
57 extern struct pingv6_ops pingv6_ops;
67 int ping_get_port(struct sock *sk, unsigned short ident);
68 int ping_hash(struct sock *sk);
69 void ping_unhash(struct sock *sk);
71 int ping_init_sock(struct sock *sk);
72 void ping_close(struct sock *sk, long timeout);
73 int ping_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len);
74 void ping_err(struct sk_buff *skb, int offset, u32 info);
75 int ping_getfrag(void *from, char *to, int offset, int fraglen, int odd,
78 int ping_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int noblock,
79 int flags, int *addr_len);
80 int ping_common_sendmsg(int family, struct msghdr *msg, size_t len,
81 void *user_icmph, size_t icmph_len);
82 int ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb);
83 bool ping_rcv(struct sk_buff *skb);
86 struct ping_seq_afinfo {
89 const struct file_operations *seq_fops;
90 const struct seq_operations seq_ops;
93 extern const struct file_operations ping_seq_fops;
95 void *ping_seq_start(struct seq_file *seq, loff_t *pos, sa_family_t family);
96 void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos);
97 void ping_seq_stop(struct seq_file *seq, void *v);
98 int ping_proc_register(struct net *net, struct ping_seq_afinfo *afinfo);
99 void ping_proc_unregister(struct net *net, struct ping_seq_afinfo *afinfo);
101 int __init ping_proc_init(void);
102 void ping_proc_exit(void);
105 void __init ping_init(void);
106 int __init pingv6_init(void);
107 void pingv6_exit(void);