projects/linux·blob v5.3 · refs

94 lines · 2.9 KiB

1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * INET An implementation of the TCP/IP protocol suite for the LINUX
4 * operating system. INET is implemented using the BSD Socket
5 * interface as the means of communication with the user level.
6 *
7 * Definitions for the "ping" module.
8 */
9#ifndef _PING_H
10#define _PING_H
11
12#include <net/icmp.h>
13#include <net/netns/hash.h>
14
15/* PING_HTABLE_SIZE must be power of 2 */
16#define PING_HTABLE_SIZE 64
17#define PING_HTABLE_MASK (PING_HTABLE_SIZE-1)
18
19#define ping_portaddr_for_each_entry(__sk, node, list) \
20 hlist_nulls_for_each_entry(__sk, node, list, sk_nulls_node)
21
22/*
23 * gid_t is either uint or ushort. We want to pass it to
24 * proc_dointvec_minmax(), so it must not be larger than MAX_INT
25 */
26#define GID_T_MAX (((gid_t)~0U) >> 1)
27
28/* Compatibility glue so we can support IPv6 when it's compiled as a module */
29struct pingv6_ops {
30 int (*ipv6_recv_error)(struct sock *sk, struct msghdr *msg, int len,
31 int *addr_len);
32 void (*ip6_datagram_recv_common_ctl)(struct sock *sk,
33 struct msghdr *msg,
34 struct sk_buff *skb);
35 void (*ip6_datagram_recv_specific_ctl)(struct sock *sk,
36 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
45struct ping_iter_state {
46 struct seq_net_private p;
47 int bucket;
48 sa_family_t family;
49};
50
51extern struct proto ping_prot;
52#if IS_ENABLED(CONFIG_IPV6)
53extern struct pingv6_ops pingv6_ops;
54#endif
55
56struct pingfakehdr {
57 struct icmphdr icmph;
58 struct msghdr *msg;
59 sa_family_t family;
60 __wsum wcheck;
61};
62
63int ping_get_port(struct sock *sk, unsigned short ident);
64int ping_hash(struct sock *sk);
65void ping_unhash(struct sock *sk);
66
67int ping_init_sock(struct sock *sk);
68void ping_close(struct sock *sk, long timeout);
69int ping_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len);
70void ping_err(struct sk_buff *skb, int offset, u32 info);
71int ping_getfrag(void *from, char *to, int offset, int fraglen, int odd,
72 struct sk_buff *);
73
74int ping_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int noblock,
75 int flags, int *addr_len);
76int ping_common_sendmsg(int family, struct msghdr *msg, size_t len,
77 void *user_icmph, size_t icmph_len);
78int ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb);
79bool ping_rcv(struct sk_buff *skb);
80
81#ifdef CONFIG_PROC_FS
82void *ping_seq_start(struct seq_file *seq, loff_t *pos, sa_family_t family);
83void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos);
84void ping_seq_stop(struct seq_file *seq, void *v);
85
86int __init ping_proc_init(void);
87void ping_proc_exit(void);
88#endif
89
90void __init ping_init(void);
91int __init pingv6_init(void);
92void pingv6_exit(void);
93
94#endif /* _PING_H */