^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0-or-later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * INET An implementation of the TCP/IP protocol suite for the LINUX
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * operating system. INET is implemented using the BSD Socket
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * interface as the means of communication with the user level.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Definitions for the "ping" module.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #ifndef _PING_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #define _PING_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <net/icmp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <net/netns/hash.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) /* PING_HTABLE_SIZE must be power of 2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #define PING_HTABLE_SIZE 64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #define PING_HTABLE_MASK (PING_HTABLE_SIZE-1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define ping_portaddr_for_each_entry(__sk, node, list) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) hlist_nulls_for_each_entry(__sk, node, list, sk_nulls_node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * gid_t is either uint or ushort. We want to pass it to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * proc_dointvec_minmax(), so it must not be larger than MAX_INT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define GID_T_MAX (((gid_t)~0U) >> 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) /* Compatibility glue so we can support IPv6 when it's compiled as a module */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) struct pingv6_ops {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) int (*ipv6_recv_error)(struct sock *sk, struct msghdr *msg, int len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) int *addr_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) void (*ip6_datagram_recv_common_ctl)(struct sock *sk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) struct msghdr *msg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) struct sk_buff *skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) void (*ip6_datagram_recv_specific_ctl)(struct sock *sk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) struct msghdr *msg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct sk_buff *skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) int (*icmpv6_err_convert)(u8 type, u8 code, int *err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) void (*ipv6_icmp_error)(struct sock *sk, struct sk_buff *skb, int err,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) __be16 port, u32 info, u8 *payload);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) int (*ipv6_chk_addr)(struct net *net, const struct in6_addr *addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) const struct net_device *dev, int strict);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) struct ping_iter_state {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) struct seq_net_private p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) int bucket;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) sa_family_t family;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) extern struct proto ping_prot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #if IS_ENABLED(CONFIG_IPV6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) extern struct pingv6_ops pingv6_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) struct pingfakehdr {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) struct icmphdr icmph;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) struct msghdr *msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) sa_family_t family;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) __wsum wcheck;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) int ping_get_port(struct sock *sk, unsigned short ident);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) int ping_hash(struct sock *sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) void ping_unhash(struct sock *sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) int ping_init_sock(struct sock *sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) void ping_close(struct sock *sk, long timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) int ping_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) void ping_err(struct sk_buff *skb, int offset, u32 info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) int ping_getfrag(void *from, char *to, int offset, int fraglen, int odd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) struct sk_buff *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) int ping_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int noblock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) int flags, int *addr_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) int ping_common_sendmsg(int family, struct msghdr *msg, size_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) void *user_icmph, size_t icmph_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) int ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) bool ping_rcv(struct sk_buff *skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) #ifdef CONFIG_PROC_FS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) void *ping_seq_start(struct seq_file *seq, loff_t *pos, sa_family_t family);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) void ping_seq_stop(struct seq_file *seq, void *v);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) int __init ping_proc_init(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) void ping_proc_exit(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) void __init ping_init(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) int __init pingv6_init(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) void pingv6_exit(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) #endif /* _PING_H */