tcpflow  1.6.1
About: tcpflow is a TCP/IP packet demultiplexer that captures data transmitted as part of TCP connections (flows), and stores the data in a way that is convenient for protocol analysis and debugging.
  Fossies Dox: tcpflow-1.6.1.tar.gz  ("unofficial" and yet experimental doxygen-generated source code documentation)  

net_ethernet.h
Go to the documentation of this file.
1 /* Copyright (C) 1997, 1999, 2001, 2008 Free Software Foundation, Inc.
2  This file is part of the GNU C Library.
3 
4  The GNU C Library is free software; you can redistribute it and/or
5  modify it under the terms of the GNU Lesser General Public
6  License as published by the Free Software Foundation; either
7  version 2.1 of the License, or (at your option) any later version.
8 
9  The GNU C Library is distributed in the hope that it will be useful,
10  but WITHOUT ANY WARRANTY; without even the implied warranty of
11  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  Lesser General Public License for more details.
13 
14  You should have received a copy of the GNU Lesser General Public
15  License along with the GNU C Library; if not, write to the Free
16  Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17  02111-1307 USA. */
18 
19 /* Based on the FreeBSD version of this file. Curiously, that file
20  lacks a copyright in the header. */
21 
22 #ifndef __NET_ETHERNET_H
23 #define __NET_ETHERNET_H 1
24 
25 #include <sys/cdefs.h>
26 #include <sys/types.h>
27 //#include <linux/if_ether.h> /* IEEE 802.3 Ethernet constants */
28 
30 
31 /* This is a name for the 48 bit ethernet address available on many
32  systems. */
33 struct ether_addr
34 {
36 } __attribute__ ((__packed__));
37 
38 /* 10Mb/s ethernet header */
40 {
41  u_int8_t ether_dhost[ETH_ALEN]; /* destination eth addr */
42  u_int8_t ether_shost[ETH_ALEN]; /* source ether addr */
43  u_int16_t ether_type; /* packet type ID field */
44 } __attribute__ ((__packed__));
45 
46 /* Ethernet protocol ID's */
47 #define ETHERTYPE_PUP 0x0200 /* Xerox PUP */
48 #define ETHERTYPE_SPRITE 0x0500 /* Sprite */
49 #define ETHERTYPE_IP 0x0800 /* IP */
50 #define ETHERTYPE_ARP 0x0806 /* Address resolution */
51 #define ETHERTYPE_REVARP 0x8035 /* Reverse ARP */
52 #define ETHERTYPE_AT 0x809B /* AppleTalk protocol */
53 #define ETHERTYPE_AARP 0x80F3 /* AppleTalk ARP */
54 #define ETHERTYPE_VLAN 0x8100 /* IEEE 802.1Q VLAN tagging */
55 #define ETHERTYPE_IPX 0x8137 /* IPX */
56 #define ETHERTYPE_IPV6 0x86dd /* IP protocol version 6 */
57 #define ETHERTYPE_LOOPBACK 0x9000 /* used to test interfaces */
58 
59 
60 #define ETHER_ADDR_LEN ETH_ALEN /* size of ethernet addr */
61 #define ETHER_TYPE_LEN 2 /* bytes in type field */
62 #define ETHER_CRC_LEN 4 /* bytes in CRC field */
63 #define ETHER_HDR_LEN ETH_HLEN /* total octets in header */
64 #define ETHER_MIN_LEN (ETH_ZLEN + ETHER_CRC_LEN) /* min packet length */
65 #define ETHER_MAX_LEN (ETH_FRAME_LEN + ETHER_CRC_LEN) /* max packet length */
66 
67 /* make sure ethenet length is valid */
68 #define ETHER_IS_VALID_LEN(foo) \
69  ((foo) >= ETHER_MIN_LEN && (foo) <= ETHER_MAX_LEN)
70 
71 /*
72  * The ETHERTYPE_NTRAILER packet types starting at ETHERTYPE_TRAIL have
73  * (type-ETHERTYPE_TRAIL)*512 bytes of data followed
74  * by an ETHER type (as given above) and then the (variable-length) header.
75  */
76 #define ETHERTYPE_TRAIL 0x1000 /* Trailer packet */
77 #define ETHERTYPE_NTRAILER 16
78 
79 #define ETHERMTU ETH_DATA_LEN
80 #define ETHERMIN (ETHER_MIN_LEN - ETHER_HDR_LEN - ETHER_CRC_LEN)
81 
83 
84 #endif /* net/ethernet.h */
#define __END_DECLS
Definition: dfxml_writer.h:56
#define __BEGIN_DECLS
Definition: dfxml_writer.h:55
#define ETH_ALEN
u_int8_t ether_addr_octet[ETH_ALEN]
Definition: net_ethernet.h:35
u_int8_t ether_shost[ETH_ALEN]
Definition: net_ethernet.h:42
u_int16_t ether_type
Definition: net_ethernet.h:43
u_int8_t ether_dhost[ETH_ALEN]
Definition: net_ethernet.h:41