RetroArch
icmp.h
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1 /*
2  * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without modification,
6  * are permitted provided that the following conditions are met:
7  *
8  * 1. Redistributions of source code must retain the above copyright notice,
9  * this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright notice,
11  * this list of conditions and the following disclaimer in the documentation
12  * and/or other materials provided with the distribution.
13  * 3. The name of the author may not be used to endorse or promote products
14  * derived from this software without specific prior written permission.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
19  * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
21  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
24  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
25  * OF SUCH DAMAGE.
26  *
27  * This file is part of the lwIP TCP/IP stack.
28  *
29  * Author: Adam Dunkels <[email protected]>
30  *
31  */
32 #ifndef __LWIP_ICMP_H__
33 #define __LWIP_ICMP_H__
34 
35 #include "lwip/arch.h"
36 
37 #include "lwip/opt.h"
38 #include "lwip/pbuf.h"
39 
40 #include "lwip/ip_addr.h"
41 #include "lwip/netif.h"
42 
43 #define ICMP_ER 0 /* echo reply */
44 #define ICMP_DUR 3 /* destination unreachable */
45 #define ICMP_SQ 4 /* source quench */
46 #define ICMP_RD 5 /* redirect */
47 #define ICMP_ECHO 8 /* echo */
48 #define ICMP_TE 11 /* time exceeded */
49 #define ICMP_PP 12 /* parameter problem */
50 #define ICMP_TS 13 /* timestamp */
51 #define ICMP_TSR 14 /* timestamp reply */
52 #define ICMP_IRQ 15 /* information request */
53 #define ICMP_IR 16 /* information reply */
54 
56  ICMP_DUR_NET = 0, /* net unreachable */
57  ICMP_DUR_HOST = 1, /* host unreachable */
58  ICMP_DUR_PROTO = 2, /* protocol unreachable */
59  ICMP_DUR_PORT = 3, /* port unreachable */
60  ICMP_DUR_FRAG = 4, /* fragmentation needed and DF set */
61  ICMP_DUR_SR = 5 /* source route failed */
62 };
63 
65  ICMP_TE_TTL = 0, /* time to live exceeded in transit */
66  ICMP_TE_FRAG = 1 /* fragment reassembly time exceeded */
67 };
68 
69 void icmp_input(struct pbuf *p, struct netif *inp);
70 
71 void icmp_dest_unreach(struct pbuf *p, enum icmp_dur_type t);
72 void icmp_time_exceeded(struct pbuf *p, enum icmp_te_type t);
73 
74 #ifdef PACK_STRUCT_USE_INCLUDES
75 # include "arch/bpstruct.h"
76 #endif
78 struct icmp_echo_hdr {
79  PACK_STRUCT_FIELD(u16_t _type_code);
82  PACK_STRUCT_FIELD(u16_t seqno);
85 
87 struct icmp_dur_hdr {
88  PACK_STRUCT_FIELD(u16_t _type_code);
90  PACK_STRUCT_FIELD(u32_t unused);
93 
95 struct icmp_te_hdr {
96  PACK_STRUCT_FIELD(u16_t _type_code);
98  PACK_STRUCT_FIELD(u32_t unused);
101 #ifdef PACK_STRUCT_USE_INCLUDES
102 # include "arch/epstruct.h"
103 #endif
104 
105 #define ICMPH_TYPE(hdr) (ntohs((hdr)->_type_code) >> 8)
106 #define ICMPH_CODE(hdr) (ntohs((hdr)->_type_code) & 0xff)
107 
108 #define ICMPH_TYPE_SET(hdr, type) ((hdr)->_type_code = htons(ICMPH_CODE(hdr) | ((type) << 8)))
109 #define ICMPH_CODE_SET(hdr, code) ((hdr)->_type_code = htons((code) | (ICMPH_TYPE(hdr) << 8)))
110 
111 #endif /* __LWIP_ICMP_H__ */
112 
Definition: icmp.h:95
static u32_t chksum(void *dataptr, u16_t len)
Definition: inet6.c:59
Definition: icmp.h:58
Definition: icmp.h:87
Definition: icmp.h:61
icmp_dur_type
Definition: icmp.h:55
#define PACK_STRUCT_BEGIN
Definition: arch.h:46
Definition: icmp.h:57
GLdouble GLdouble t
Definition: glext.h:6398
Definition: icmp.h:65
PACK_STRUCT_FIELD(u16_t _type_code)
Definition: icmp.h:60
Definition: netif.h:72
Definition: icmp.h:78
Definition: icmp.h:56
PACK_STRUCT_FIELD(u16_t _type_code)
Definition: icmp.h:59
Definition: icmp.h:66
GLfloat GLfloat p
Definition: glext.h:9809
#define PACK_STRUCT_END
Definition: arch.h:50
PACK_STRUCT_FIELD(u16_t _type_code)
void icmp_dest_unreach(struct pbuf *p, enum icmp_dur_type t)
Definition: icmp.c:128
u32 u32_t
Definition: cc.h:47
icmp_te_type
Definition: icmp.h:64
void icmp_input(struct pbuf *p, struct netif *inp)
Definition: icmp.c:47
PACK_STRUCT_BEGIN struct icmp_echo_hdr PACK_STRUCT_STRUCT
void icmp_time_exceeded(struct pbuf *p, enum icmp_te_type t)
u16 u16_t
Definition: cc.h:45
Definition: pbuf.h:66