1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * INET An implementation of the TCP/IP protocol suite for the LINUX 4*4882a593Smuzhiyun * operating system. INET is implemented using the BSD Socket 5*4882a593Smuzhiyun * interface as the means of communication with the user level. 6*4882a593Smuzhiyun * 7*4882a593Smuzhiyun * Definitions for the "ping" module. 8*4882a593Smuzhiyun */ 9*4882a593Smuzhiyun #ifndef _PING_H 10*4882a593Smuzhiyun #define _PING_H 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun #include <net/icmp.h> 13*4882a593Smuzhiyun #include <net/netns/hash.h> 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun /* PING_HTABLE_SIZE must be power of 2 */ 16*4882a593Smuzhiyun #define PING_HTABLE_SIZE 64 17*4882a593Smuzhiyun #define PING_HTABLE_MASK (PING_HTABLE_SIZE-1) 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun #define ping_portaddr_for_each_entry(__sk, node, list) \ 20*4882a593Smuzhiyun hlist_nulls_for_each_entry(__sk, node, list, sk_nulls_node) 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun /* 23*4882a593Smuzhiyun * gid_t is either uint or ushort. We want to pass it to 24*4882a593Smuzhiyun * proc_dointvec_minmax(), so it must not be larger than MAX_INT 25*4882a593Smuzhiyun */ 26*4882a593Smuzhiyun #define GID_T_MAX (((gid_t)~0U) >> 1) 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun /* Compatibility glue so we can support IPv6 when it's compiled as a module */ 29*4882a593Smuzhiyun struct pingv6_ops { 30*4882a593Smuzhiyun int (*ipv6_recv_error)(struct sock *sk, struct msghdr *msg, int len, 31*4882a593Smuzhiyun int *addr_len); 32*4882a593Smuzhiyun void (*ip6_datagram_recv_common_ctl)(struct sock *sk, 33*4882a593Smuzhiyun struct msghdr *msg, 34*4882a593Smuzhiyun struct sk_buff *skb); 35*4882a593Smuzhiyun void (*ip6_datagram_recv_specific_ctl)(struct sock *sk, 36*4882a593Smuzhiyun struct msghdr *msg, 37*4882a593Smuzhiyun struct sk_buff *skb); 38*4882a593Smuzhiyun int (*icmpv6_err_convert)(u8 type, u8 code, int *err); 39*4882a593Smuzhiyun void (*ipv6_icmp_error)(struct sock *sk, struct sk_buff *skb, int err, 40*4882a593Smuzhiyun __be16 port, u32 info, u8 *payload); 41*4882a593Smuzhiyun int (*ipv6_chk_addr)(struct net *net, const struct in6_addr *addr, 42*4882a593Smuzhiyun const struct net_device *dev, int strict); 43*4882a593Smuzhiyun }; 44*4882a593Smuzhiyun 45*4882a593Smuzhiyun struct ping_iter_state { 46*4882a593Smuzhiyun struct seq_net_private p; 47*4882a593Smuzhiyun int bucket; 48*4882a593Smuzhiyun sa_family_t family; 49*4882a593Smuzhiyun }; 50*4882a593Smuzhiyun 51*4882a593Smuzhiyun extern struct proto ping_prot; 52*4882a593Smuzhiyun #if IS_ENABLED(CONFIG_IPV6) 53*4882a593Smuzhiyun extern struct pingv6_ops pingv6_ops; 54*4882a593Smuzhiyun #endif 55*4882a593Smuzhiyun 56*4882a593Smuzhiyun struct pingfakehdr { 57*4882a593Smuzhiyun struct icmphdr icmph; 58*4882a593Smuzhiyun struct msghdr *msg; 59*4882a593Smuzhiyun sa_family_t family; 60*4882a593Smuzhiyun __wsum wcheck; 61*4882a593Smuzhiyun }; 62*4882a593Smuzhiyun 63*4882a593Smuzhiyun int ping_get_port(struct sock *sk, unsigned short ident); 64*4882a593Smuzhiyun int ping_hash(struct sock *sk); 65*4882a593Smuzhiyun void ping_unhash(struct sock *sk); 66*4882a593Smuzhiyun 67*4882a593Smuzhiyun int ping_init_sock(struct sock *sk); 68*4882a593Smuzhiyun void ping_close(struct sock *sk, long timeout); 69*4882a593Smuzhiyun int ping_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len); 70*4882a593Smuzhiyun void ping_err(struct sk_buff *skb, int offset, u32 info); 71*4882a593Smuzhiyun int ping_getfrag(void *from, char *to, int offset, int fraglen, int odd, 72*4882a593Smuzhiyun struct sk_buff *); 73*4882a593Smuzhiyun 74*4882a593Smuzhiyun int ping_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int noblock, 75*4882a593Smuzhiyun int flags, int *addr_len); 76*4882a593Smuzhiyun int ping_common_sendmsg(int family, struct msghdr *msg, size_t len, 77*4882a593Smuzhiyun void *user_icmph, size_t icmph_len); 78*4882a593Smuzhiyun int ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb); 79*4882a593Smuzhiyun bool ping_rcv(struct sk_buff *skb); 80*4882a593Smuzhiyun 81*4882a593Smuzhiyun #ifdef CONFIG_PROC_FS 82*4882a593Smuzhiyun void *ping_seq_start(struct seq_file *seq, loff_t *pos, sa_family_t family); 83*4882a593Smuzhiyun void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos); 84*4882a593Smuzhiyun void ping_seq_stop(struct seq_file *seq, void *v); 85*4882a593Smuzhiyun 86*4882a593Smuzhiyun int __init ping_proc_init(void); 87*4882a593Smuzhiyun void ping_proc_exit(void); 88*4882a593Smuzhiyun #endif 89*4882a593Smuzhiyun 90*4882a593Smuzhiyun void __init ping_init(void); 91*4882a593Smuzhiyun int __init pingv6_init(void); 92*4882a593Smuzhiyun void pingv6_exit(void); 93*4882a593Smuzhiyun 94*4882a593Smuzhiyun #endif /* _PING_H */ 95