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c319b4d7 VK |
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 | ||
6d0bfe22 | 16 | #include <net/icmp.h> |
c319b4d7 VK |
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 | ||
6d0bfe22 LC |
32 | /* Compatibility glue so we can support IPv6 when it's compiled as a module */ |
33 | struct pingv6_ops { | |
85fbaa75 HFS |
34 | int (*ipv6_recv_error)(struct sock *sk, struct msghdr *msg, int len, |
35 | int *addr_len); | |
6d0bfe22 LC |
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, | |
6bc19fb8 | 42 | const struct net_device *dev, int strict); |
6d0bfe22 LC |
43 | }; |
44 | ||
c319b4d7 VK |
45 | struct ping_table { |
46 | struct hlist_nulls_head hash[PING_HTABLE_SIZE]; | |
47 | rwlock_t lock; | |
48 | }; | |
49 | ||
50 | struct ping_iter_state { | |
51 | struct seq_net_private p; | |
52 | int bucket; | |
8cc785f6 | 53 | sa_family_t family; |
c319b4d7 VK |
54 | }; |
55 | ||
56 | extern struct proto ping_prot; | |
6d0bfe22 LC |
57 | extern struct ping_table ping_table; |
58 | #if IS_ENABLED(CONFIG_IPV6) | |
59 | extern struct pingv6_ops pingv6_ops; | |
60 | #endif | |
c319b4d7 | 61 | |
6d0bfe22 LC |
62 | struct pingfakehdr { |
63 | struct icmphdr icmph; | |
64 | struct iovec *iov; | |
65 | sa_family_t family; | |
66 | __wsum wcheck; | |
67 | }; | |
c319b4d7 | 68 | |
6d0bfe22 LC |
69 | int ping_get_port(struct sock *sk, unsigned short ident); |
70 | void ping_hash(struct sock *sk); | |
71 | void ping_unhash(struct sock *sk); | |
72 | ||
73 | int ping_init_sock(struct sock *sk); | |
74 | void ping_close(struct sock *sk, long timeout); | |
75 | int ping_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len); | |
76 | void ping_err(struct sk_buff *skb, int offset, u32 info); | |
77 | int ping_getfrag(void *from, char *to, int offset, int fraglen, int odd, | |
78 | struct sk_buff *); | |
79 | ||
80 | int ping_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, | |
81 | size_t len, int noblock, int flags, int *addr_len); | |
82 | int ping_common_sendmsg(int family, struct msghdr *msg, size_t len, | |
83 | void *user_icmph, size_t icmph_len); | |
84 | int ping_v4_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, | |
85 | size_t len); | |
86 | int ping_v6_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, | |
87 | size_t len); | |
88 | int ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb); | |
89 | void ping_rcv(struct sk_buff *skb); | |
c319b4d7 | 90 | |
c319b4d7 | 91 | #ifdef CONFIG_PROC_FS |
8cc785f6 LC |
92 | struct ping_seq_afinfo { |
93 | char *name; | |
94 | sa_family_t family; | |
95 | const struct file_operations *seq_fops; | |
96 | const struct seq_operations seq_ops; | |
97 | }; | |
98 | ||
d862e546 LC |
99 | extern const struct file_operations ping_seq_fops; |
100 | ||
101 | void *ping_seq_start(struct seq_file *seq, loff_t *pos, sa_family_t family); | |
102 | void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos); | |
103 | void ping_seq_stop(struct seq_file *seq, void *v); | |
104 | int ping_proc_register(struct net *net, struct ping_seq_afinfo *afinfo); | |
105 | void ping_proc_unregister(struct net *net, struct ping_seq_afinfo *afinfo); | |
106 | ||
6d3b334d JP |
107 | int __init ping_proc_init(void); |
108 | void ping_proc_exit(void); | |
c319b4d7 VK |
109 | #endif |
110 | ||
111 | void __init ping_init(void); | |
6d0bfe22 LC |
112 | int __init pingv6_init(void); |
113 | void pingv6_exit(void); | |
c319b4d7 VK |
114 | |
115 | #endif /* _PING_H */ |