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TOMOYO Linux Cross Reference
Linux/include/net/ping.h

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  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 */
 29 struct 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 
 45 struct ping_iter_state {
 46         struct seq_net_private  p;
 47         int                     bucket;
 48         sa_family_t             family;
 49 };
 50 
 51 extern struct proto ping_prot;
 52 #if IS_ENABLED(CONFIG_IPV6)
 53 extern struct pingv6_ops pingv6_ops;
 54 #endif
 55 
 56 struct pingfakehdr {
 57         struct icmphdr icmph;
 58         struct msghdr *msg;
 59         sa_family_t family;
 60         __wsum wcheck;
 61 };
 62 
 63 int  ping_get_port(struct sock *sk, unsigned short ident);
 64 int ping_hash(struct sock *sk);
 65 void ping_unhash(struct sock *sk);
 66 
 67 int  ping_init_sock(struct sock *sk);
 68 void ping_close(struct sock *sk, long timeout);
 69 int  ping_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len);
 70 void ping_err(struct sk_buff *skb, int offset, u32 info);
 71 int  ping_getfrag(void *from, char *to, int offset, int fraglen, int odd,
 72                   struct sk_buff *);
 73 
 74 int  ping_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int noblock,
 75                   int flags, int *addr_len);
 76 int  ping_common_sendmsg(int family, struct msghdr *msg, size_t len,
 77                          void *user_icmph, size_t icmph_len);
 78 int  ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb);
 79 bool ping_rcv(struct sk_buff *skb);
 80 
 81 #ifdef CONFIG_PROC_FS
 82 void *ping_seq_start(struct seq_file *seq, loff_t *pos, sa_family_t family);
 83 void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos);
 84 void ping_seq_stop(struct seq_file *seq, void *v);
 85 
 86 int __init ping_proc_init(void);
 87 void ping_proc_exit(void);
 88 #endif
 89 
 90 void __init ping_init(void);
 91 int  __init pingv6_init(void);
 92 void pingv6_exit(void);
 93 
 94 #endif /* _PING_H */
 95 

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