| 1 | |
| 2 | * INET An implementation of the TCP/IP protocol suite for the LINUX
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| 3 | * operating system. INET is implemented using the BSD Socket
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| 4 | * interface as the means of communication with the user level.
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| 5 | *
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| 6 | * Definitions for the "ping" module.
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| 7 | *
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| 8 | * This program is free software; you can redistribute it and/or
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| 9 | * modify it under the terms of the GNU General Public License
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| 10 | * as published by the Free Software Foundation; either version
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| 11 | * 2 of the License, or (at your option) any later version.
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| 12 |
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| 13 | #ifndef _PING_H
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| 14 | #define _PING_H
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| 15 |
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| 16 | #include <net/icmp.h>
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| 17 | #include <net/netns/hash.h>
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| 18 |
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| 19 |
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| 20 | #define PING_HTABLE_SIZE 64
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| 21 | #define PING_HTABLE_MASK (PING_HTABLE_SIZE-1)
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| 22 |
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| 23 | #define ping_portaddr_for_each_entry(__sk, node, list) \
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| 24 | hlist_nulls_for_each_entry(__sk, node, list, sk_nulls_node)
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| 25 |
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| 26 | |
| 27 | * gid_t is either uint or ushort. We want to pass it to
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| 28 | * proc_dointvec_minmax(), so it must not be larger than MAX_INT
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| 29 |
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| 30 | #define GID_T_MAX (((gid_t)~0U) >> 1)
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| 31 |
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| 32 |
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| 33 | struct pingv6_ops {
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| 34 | int (*ipv6_recv_error)(struct sock *sk, struct msghdr *msg, int len,
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| 35 | int *addr_len);
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| 36 | void (*ip6_datagram_recv_common_ctl)(struct sock *sk,
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| 37 | struct msghdr *msg,
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| 38 | struct sk_buff *skb);
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| 39 | void (*ip6_datagram_recv_specific_ctl)(struct sock *sk,
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| 40 | struct msghdr *msg,
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| 41 | struct sk_buff *skb);
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| 42 | int (*icmpv6_err_convert)(u8 type, u8 code, int *err);
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| 43 | void (*ipv6_icmp_error)(struct sock *sk, struct sk_buff *skb, int err,
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| 44 | __be16 port, u32 info, u8 *payload);
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| 45 | int (*ipv6_chk_addr)(struct net *net, const struct in6_addr *addr,
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| 46 | const struct net_device *dev, int strict);
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| 47 | };
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| 48 |
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| 49 | struct ping_iter_state {
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| 50 | struct seq_net_private p;
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| 51 | int bucket;
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| 52 | sa_family_t family;
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| 53 | };
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| 54 |
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| 55 | extern struct proto ping_prot;
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| 56 | #if IS_ENABLED(CONFIG_IPV6)
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| 57 | extern struct pingv6_ops pingv6_ops;
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| 58 | #endif
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| 59 |
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| 60 | struct pingfakehdr {
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| 61 | struct icmphdr icmph;
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| 62 | struct msghdr *msg;
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| 63 | sa_family_t family;
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| 64 | __wsum wcheck;
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| 65 | };
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| 66 |
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| 67 | int ping_get_port(struct sock *sk, unsigned short ident);
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| 68 | void ping_hash(struct sock *sk);
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| 69 | void ping_unhash(struct sock *sk);
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| 70 |
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| 71 | int ping_init_sock(struct sock *sk);
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| 72 | void ping_close(struct sock *sk, long timeout);
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| 73 | int ping_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len);
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| 74 | void ping_err(struct sk_buff *skb, int offset, u32 info);
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| 75 | int ping_getfrag(void *from, char *to, int offset, int fraglen, int odd,
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| 76 | struct sk_buff *);
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| 77 |
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| 78 | int ping_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
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| 79 | size_t len, int noblock, int flags, int *addr_len);
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| 80 | int ping_common_sendmsg(int family, struct msghdr *msg, size_t len,
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| 81 | void *user_icmph, size_t icmph_len);
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| 82 | int ping_v6_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
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| 83 | size_t len);
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| 84 | int ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb);
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| 85 | bool ping_rcv(struct sk_buff *skb);
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| 86 |
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| 87 | #ifdef CONFIG_PROC_FS
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| 88 | struct ping_seq_afinfo {
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| 89 | char *name;
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| 90 | sa_family_t family;
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| 91 | const struct file_operations *seq_fops;
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| 92 | const struct seq_operations seq_ops;
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| 93 | };
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| 94 |
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| 95 | extern const struct file_operations ping_seq_fops;
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| 96 |
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| 97 | void *ping_seq_start(struct seq_file *seq, loff_t *pos, sa_family_t family);
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| 98 | void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos);
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| 99 | void ping_seq_stop(struct seq_file *seq, void *v);
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| 100 | int ping_proc_register(struct net *net, struct ping_seq_afinfo *afinfo);
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| 101 | void ping_proc_unregister(struct net *net, struct ping_seq_afinfo *afinfo);
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| 102 |
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| 103 | int __init ping_proc_init(void);
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| 104 | void ping_proc_exit(void);
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| 105 | #endif
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| 106 |
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| 107 | void __init ping_init(void);
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| 108 | int __init pingv6_init(void);
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| 109 | void pingv6_exit(void);
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| 110 |
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| 111 | #endif
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