| 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
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| 2 | /* |
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| 3 | * INET An implementation of the TCP/IP protocol suite for the LINUX |
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| 4 | * operating system. INET is implemented using the BSD Socket |
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| 5 | * interface as the means of communication with the user level. |
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| 6 | * |
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| 7 | * Definitions for the "ping" module. |
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| 8 | */ |
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| 9 | #ifndef _PING_H |
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| 10 | #define _PING_H |
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| 11 | |
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| 12 | #include <net/icmp.h> |
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| 13 | #include <net/netns/hash.h> |
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| 14 | |
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| 15 | /* PING_HTABLE_SIZE must be power of 2 */ |
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| 16 | #define PING_HTABLE_SIZE 64 |
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| 17 | #define PING_HTABLE_MASK (PING_HTABLE_SIZE-1) |
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| 18 | |
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| 19 | #define GID_T_MAX (((gid_t)~0U) - 1) |
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| 20 | |
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| 21 | /* Compatibility glue so we can support IPv6 when it's compiled as a module */ |
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| 22 | struct pingv6_ops { |
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| 23 | int (*ipv6_recv_error)(struct sock *sk, struct msghdr *msg, int len, |
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| 24 | int *addr_len); |
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| 25 | void (*ip6_datagram_recv_common_ctl)(struct sock *sk, |
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| 26 | struct msghdr *msg, |
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| 27 | struct sk_buff *skb); |
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| 28 | void (*ip6_datagram_recv_specific_ctl)(struct sock *sk, |
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| 29 | struct msghdr *msg, |
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| 30 | struct sk_buff *skb); |
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| 31 | int (*icmpv6_err_convert)(u8 type, u8 code, int *err); |
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| 32 | void (*ipv6_icmp_error)(struct sock *sk, struct sk_buff *skb, int err, |
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| 33 | __be16 port, u32 info, u8 *payload); |
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| 34 | int (*ipv6_chk_addr)(struct net *net, const struct in6_addr *addr, |
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| 35 | const struct net_device *dev, int strict); |
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| 36 | }; |
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| 37 | |
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| 38 | struct ping_iter_state { |
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| 39 | struct seq_net_private p; |
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| 40 | int bucket; |
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| 41 | sa_family_t family; |
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| 42 | }; |
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| 43 | |
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| 44 | extern struct proto ping_prot; |
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| 45 | #if IS_ENABLED(CONFIG_IPV6) |
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| 46 | extern struct pingv6_ops pingv6_ops; |
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| 47 | #endif |
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| 48 | |
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| 49 | struct pingfakehdr { |
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| 50 | struct icmphdr icmph; |
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| 51 | struct msghdr *msg; |
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| 52 | sa_family_t family; |
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| 53 | __wsum wcheck; |
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| 54 | }; |
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| 55 | |
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| 56 | int ping_get_port(struct sock *sk, unsigned short ident); |
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| 57 | int ping_hash(struct sock *sk); |
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| 58 | void ping_unhash(struct sock *sk); |
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| 59 | |
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| 60 | int ping_init_sock(struct sock *sk); |
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| 61 | void ping_close(struct sock *sk, long timeout); |
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| 62 | int ping_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len); |
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| 63 | void ping_err(struct sk_buff *skb, int offset, u32 info); |
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| 64 | int ping_getfrag(void *from, char *to, int offset, int fraglen, int odd, |
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| 65 | struct sk_buff *); |
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| 66 | |
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| 67 | int ping_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, |
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| 68 | int flags, int *addr_len); |
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| 69 | int ping_common_sendmsg(int family, struct msghdr *msg, size_t len, |
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| 70 | void *user_icmph, size_t icmph_len); |
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| 71 | int ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb); |
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| 72 | enum skb_drop_reason ping_rcv(struct sk_buff *skb); |
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| 73 | |
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| 74 | #ifdef CONFIG_PROC_FS |
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| 75 | void *ping_seq_start(struct seq_file *seq, loff_t *pos, sa_family_t family); |
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| 76 | void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos); |
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| 77 | void ping_seq_stop(struct seq_file *seq, void *v); |
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| 78 | |
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| 79 | int __init ping_proc_init(void); |
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| 80 | void ping_proc_exit(void); |
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| 81 | #endif |
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| 82 | |
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| 83 | void __init ping_init(void); |
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| 84 | int __init pingv6_init(void); |
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| 85 | void pingv6_exit(void); |
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| 86 | |
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| 87 | #endif /* _PING_H */ |
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| 88 | |
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