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 GID_T_MAX (((gid_t)~0U) - 1) 20 21 /* Compatibility glue so we can support IPv6 when it's compiled as a module */ 22 struct pingv6_ops { 23 int (*ipv6_recv_error)(struct sock *sk, struct msghdr *msg, int len, 24 int *addr_len); 25 void (*ip6_datagram_recv_common_ctl)(struct sock *sk, 26 struct msghdr *msg, 27 struct sk_buff *skb); 28 void (*ip6_datagram_recv_specific_ctl)(struct sock *sk, 29 struct msghdr *msg, 30 struct sk_buff *skb); 31 int (*icmpv6_err_convert)(u8 type, u8 code, int *err); 32 void (*ipv6_icmp_error)(struct sock *sk, struct sk_buff *skb, int err, 33 __be16 port, u32 info, u8 *payload); 34 int (*ipv6_chk_addr)(struct net *net, const struct in6_addr *addr, 35 const struct net_device *dev, int strict); 36 }; 37 38 struct ping_iter_state { 39 struct seq_net_private p; 40 int bucket; 41 sa_family_t family; 42 }; 43 44 extern struct proto ping_prot; 45 #if IS_ENABLED(CONFIG_IPV6) 46 extern struct pingv6_ops pingv6_ops; 47 #endif 48 49 struct pingfakehdr { 50 struct icmphdr icmph; 51 struct msghdr *msg; 52 sa_family_t family; 53 __wsum wcheck; 54 }; 55 56 int ping_get_port(struct sock *sk, unsigned short ident); 57 void ping_unhash(struct sock *sk); 58 59 int ping_init_sock(struct sock *sk); 60 void ping_close(struct sock *sk, long timeout); 61 int ping_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len); 62 void ping_err(struct sk_buff *skb, int offset, u32 info); 63 int ping_getfrag(void *from, char *to, int offset, int fraglen, int odd, 64 struct sk_buff *); 65 66 int ping_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, 67 int flags, int *addr_len); 68 int ping_common_sendmsg(int family, struct msghdr *msg, size_t len, 69 void *user_icmph, size_t icmph_len); 70 int ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb); 71 enum skb_drop_reason ping_rcv(struct sk_buff *skb); 72 73 #ifdef CONFIG_PROC_FS 74 void *ping_seq_start(struct seq_file *seq, loff_t *pos, sa_family_t family); 75 void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos); 76 void ping_seq_stop(struct seq_file *seq, void *v); 77 78 int __init ping_proc_init(void); 79 void ping_proc_exit(void); 80 #endif 81 82 void __init ping_init(void); 83 int __init pingv6_init(void); 84 void pingv6_exit(void); 85 86 #endif /* _PING_H */ 87