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 GID_T_MAX (((gid_t)~0U) - 1) |
20 | |
21 | /* Compatibility glue so we can support IPv6 when it's compiled as a module */ |
22 | struct pingv6_ops { |
23 | int (*ipv6_recv_error)(struct sock *sk, struct msghdr *msg, int len, |
24 | int *addr_len); |
25 | void (*ip6_datagram_recv_common_ctl)(struct sock *sk, |
26 | struct msghdr *msg, |
27 | struct sk_buff *skb); |
28 | void (*ip6_datagram_recv_specific_ctl)(struct sock *sk, |
29 | struct msghdr *msg, |
30 | struct sk_buff *skb); |
31 | int (*icmpv6_err_convert)(u8 type, u8 code, int *err); |
32 | void (*ipv6_icmp_error)(struct sock *sk, struct sk_buff *skb, int err, |
33 | __be16 port, u32 info, u8 *payload); |
34 | int (*ipv6_chk_addr)(struct net *net, const struct in6_addr *addr, |
35 | const struct net_device *dev, int strict); |
36 | }; |
37 | |
38 | struct ping_iter_state { |
39 | struct seq_net_private p; |
40 | int bucket; |
41 | sa_family_t family; |
42 | }; |
43 | |
44 | extern struct proto ping_prot; |
45 | #if IS_ENABLED(CONFIG_IPV6) |
46 | extern struct pingv6_ops pingv6_ops; |
47 | #endif |
48 | |
49 | struct pingfakehdr { |
50 | struct icmphdr icmph; |
51 | struct msghdr *msg; |
52 | sa_family_t family; |
53 | __wsum wcheck; |
54 | }; |
55 | |
56 | int ping_get_port(struct sock *sk, unsigned short ident); |
57 | int ping_hash(struct sock *sk); |
58 | void ping_unhash(struct sock *sk); |
59 | |
60 | int ping_init_sock(struct sock *sk); |
61 | void ping_close(struct sock *sk, long timeout); |
62 | int ping_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len); |
63 | void ping_err(struct sk_buff *skb, int offset, u32 info); |
64 | int ping_getfrag(void *from, char *to, int offset, int fraglen, int odd, |
65 | struct sk_buff *); |
66 | |
67 | int ping_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, |
68 | int flags, int *addr_len); |
69 | int ping_common_sendmsg(int family, struct msghdr *msg, size_t len, |
70 | void *user_icmph, size_t icmph_len); |
71 | int ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb); |
72 | enum skb_drop_reason ping_rcv(struct sk_buff *skb); |
73 | |
74 | #ifdef CONFIG_PROC_FS |
75 | void *ping_seq_start(struct seq_file *seq, loff_t *pos, sa_family_t family); |
76 | void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos); |
77 | void ping_seq_stop(struct seq_file *seq, void *v); |
78 | |
79 | int __init ping_proc_init(void); |
80 | void ping_proc_exit(void); |
81 | #endif |
82 | |
83 | void __init ping_init(void); |
84 | int __init pingv6_init(void); |
85 | void pingv6_exit(void); |
86 | |
87 | #endif /* _PING_H */ |
88 | |