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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 (*ip6_datagram_recv_ctl)(struct sock *sk, struct msghdr *msg, |
36 | struct sk_buff *skb); |
37 | int (*icmpv6_err_convert)(u8 type, u8 code, int *err); |
38 | void (*ipv6_icmp_error)(struct sock *sk, struct sk_buff *skb, int err, |
39 | __be16 port, u32 info, u8 *payload); |
40 | int (*ipv6_chk_addr)(struct net *net, const struct in6_addr *addr, |
41 | const struct net_device *dev, int strict); |
42 | }; |
43 | |
44 | struct ping_table { |
45 | struct hlist_nulls_head hash[PING_HTABLE_SIZE]; |
46 | rwlock_t lock; |
47 | }; |
48 | |
49 | struct ping_iter_state { |
50 | struct seq_net_private p; |
51 | int bucket; |
52 | sa_family_t family; |
53 | }; |
54 | |
55 | extern struct proto ping_prot; |
56 | extern struct ping_table ping_table; |
57 | #if IS_ENABLED(CONFIG_IPV6) |
58 | extern struct pingv6_ops pingv6_ops; |
59 | #endif |
60 | |
61 | struct pingfakehdr { |
62 | struct icmphdr icmph; |
63 | struct iovec *iov; |
64 | sa_family_t family; |
65 | __wsum wcheck; |
66 | }; |
67 | |
68 | int ping_get_port(struct sock *sk, unsigned short ident); |
69 | void ping_hash(struct sock *sk); |
70 | void ping_unhash(struct sock *sk); |
71 | |
72 | int ping_init_sock(struct sock *sk); |
73 | void ping_close(struct sock *sk, long timeout); |
74 | int ping_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len); |
75 | void ping_err(struct sk_buff *skb, int offset, u32 info); |
76 | int ping_getfrag(void *from, char *to, int offset, int fraglen, int odd, |
77 | struct sk_buff *); |
78 | |
79 | int ping_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, |
80 | size_t len, int noblock, int flags, int *addr_len); |
81 | int ping_common_sendmsg(int family, struct msghdr *msg, size_t len, |
82 | void *user_icmph, size_t icmph_len); |
83 | int ping_v4_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, |
84 | size_t len); |
85 | int ping_v6_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, |
86 | size_t len); |
87 | int ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb); |
88 | void ping_rcv(struct sk_buff *skb); |
89 | |
90 | #ifdef CONFIG_PROC_FS |
91 | struct ping_seq_afinfo { |
92 | char *name; |
93 | sa_family_t family; |
94 | const struct file_operations *seq_fops; |
95 | const struct seq_operations seq_ops; |
96 | }; |
97 | |
98 | extern const struct file_operations ping_seq_fops; |
99 | |
100 | void *ping_seq_start(struct seq_file *seq, loff_t *pos, sa_family_t family); |
101 | void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos); |
102 | void ping_seq_stop(struct seq_file *seq, void *v); |
103 | int ping_proc_register(struct net *net, struct ping_seq_afinfo *afinfo); |
104 | void ping_proc_unregister(struct net *net, struct ping_seq_afinfo *afinfo); |
105 | |
106 | extern int __init ping_proc_init(void); |
107 | extern void ping_proc_exit(void); |
108 | #endif |
109 | |
110 | void __init ping_init(void); |
111 | int __init pingv6_init(void); |
112 | void pingv6_exit(void); |
113 | |
114 | #endif /* _PING_H */ |
115 |
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