| 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 ICMP module. |
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| 8 | * |
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| 9 | * Version: @(#)icmp.h 1.0.4 05/13/93 |
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| 10 | * |
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| 11 | * Authors: Ross Biro |
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| 12 | * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> |
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| 13 | */ |
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| 14 | #ifndef _ICMP_H |
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| 15 | #define _ICMP_H |
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| 16 | |
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| 17 | #include <linux/icmp.h> |
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| 18 | |
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| 19 | #include <net/inet_sock.h> |
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| 20 | #include <net/snmp.h> |
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| 21 | #include <net/ip.h> |
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| 22 | |
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| 23 | struct icmp_err { |
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| 24 | int errno; |
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| 25 | unsigned int fatal:1; |
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| 26 | }; |
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| 27 | |
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| 28 | extern const struct icmp_err icmp_err_convert[]; |
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| 29 | #define ICMP_INC_STATS(net, field) SNMP_INC_STATS((net)->mib.icmp_statistics, field) |
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| 30 | #define __ICMP_INC_STATS(net, field) __SNMP_INC_STATS((net)->mib.icmp_statistics, field) |
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| 31 | #define ICMPMSGOUT_INC_STATS(net, field) SNMP_INC_STATS_ATOMIC_LONG((net)->mib.icmpmsg_statistics, field+256) |
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| 32 | #define ICMPMSGIN_INC_STATS(net, field) SNMP_INC_STATS_ATOMIC_LONG((net)->mib.icmpmsg_statistics, field) |
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| 33 | |
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| 34 | struct dst_entry; |
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| 35 | struct net_proto_family; |
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| 36 | struct sk_buff; |
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| 37 | struct net; |
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| 38 | |
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| 39 | void __icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info, |
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| 40 | const struct ip_options *opt); |
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| 41 | static inline void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info) |
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| 42 | { |
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| 43 | __icmp_send(skb_in, type, code, info, opt: &IPCB(skb_in)->opt); |
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| 44 | } |
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| 45 | |
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| 46 | #if IS_ENABLED(CONFIG_NF_NAT) |
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| 47 | void icmp_ndo_send(struct sk_buff *skb_in, int type, int code, __be32 info); |
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| 48 | #else |
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| 49 | static inline void icmp_ndo_send(struct sk_buff *skb_in, int type, int code, __be32 info) |
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| 50 | { |
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| 51 | struct ip_options opts = { 0 }; |
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| 52 | __icmp_send(skb_in, type, code, info, &opts); |
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| 53 | } |
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| 54 | #endif |
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| 55 | |
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| 56 | int icmp_rcv(struct sk_buff *skb); |
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| 57 | int icmp_err(struct sk_buff *skb, u32 info); |
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| 58 | int icmp_init(void); |
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| 59 | void icmp_out_count(struct net *net, unsigned char type); |
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| 60 | bool icmp_build_probe(struct sk_buff *skb, struct icmphdr *icmphdr); |
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| 61 | |
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| 62 | #endif /* _ICMP_H */ |
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| 63 | |
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