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1 | /* |
1 | /* |
2 | * Copyright (c) 2009 Lukas Mejdrech |
2 | * Copyright (c) 2009 Lukas Mejdrech |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup eth |
29 | /** @addtogroup eth |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | 32 | ||
33 | /** @file |
33 | /** @file |
34 | * Ethernet protocol header definitions. |
34 | * Ethernet protocol header definitions. |
35 | * Names according to the linux src/include/linux/ip.h header file. |
35 | * Names according to the linux src/include/linux/ip.h header file. |
36 | */ |
36 | */ |
37 | 37 | ||
38 | #ifndef __NET_ETH_HEADER_H__ |
38 | #ifndef __NET_ETH_HEADER_H__ |
39 | #define __NET_ETH_HEADER_H__ |
39 | #define __NET_ETH_HEADER_H__ |
40 | 40 | ||
41 | #include <sys/types.h> |
41 | #include <sys/types.h> |
42 | 42 | ||
43 | #define ETH_ADDR 6 |
43 | #define ETH_ADDR 6 |
44 | 44 | ||
45 | #define ETH_PREAMBLE 0x55 |
45 | #define ETH_PREAMBLE 0x55 |
46 | 46 | ||
47 | #define ETH_SFD 0xF5 |
47 | #define ETH_SFD 0xD5 |
48 | - | ||
49 | #define ETH_LSAP_SNAP 0xAA |
- | |
50 | - | ||
51 | #define ETH_RAW 0xFF |
- | |
52 | 48 | ||
53 | /** Type definition of the Ethernet header with all the extensions. |
49 | /** Type definition of the Ethernet header with all the extensions. |
54 | * @see eth_header_ex |
50 | * @see eth_header_ex |
55 | */ |
51 | */ |
56 | typedef struct eth_header_ex eth_header_ex_t; |
52 | typedef struct eth_header_ex eth_header_ex_t; |
57 | 53 | ||
58 | /** Type definition of the Ethernet header with all the extensions pointer. |
54 | /** Type definition of the Ethernet header with all the extensions pointer. |
59 | * @see eth_header |
55 | * @see eth_header |
60 | */ |
56 | */ |
61 | typedef eth_header_ex_t * eth_header_ex_ref; |
57 | typedef eth_header_ex_t * eth_header_ex_ref; |
62 | 58 | ||
63 | /** Type definition of the Ethernet header LSAP extension. |
59 | /** Type definition of the Ethernet header LSAP extension. |
64 | * @see eth_header_lsap |
60 | * @see eth_header_lsap |
65 | */ |
61 | */ |
66 | typedef struct eth_header_lsap eth_header_lsap_t; |
62 | typedef struct eth_header_lsap eth_header_lsap_t; |
67 | 63 | ||
68 | /** Type definition of the Ethernet header LSAP extension pointer. |
64 | /** Type definition of the Ethernet header LSAP extension pointer. |
69 | * @see eth_header_lsap |
65 | * @see eth_header_lsap |
70 | */ |
66 | */ |
71 | typedef eth_header_lsap_t * eth_header_lsap_ref; |
67 | typedef eth_header_lsap_t * eth_header_lsap_ref; |
72 | 68 | ||
73 | /** Type definition of the Ethernet header SNAP extension. |
69 | /** Type definition of the Ethernet header SNAP extension. |
74 | * @see eth_header_snap |
70 | * @see eth_header_snap |
75 | */ |
71 | */ |
76 | typedef struct eth_header_snap eth_header_snap_t; |
72 | typedef struct eth_header_snap eth_header_snap_t; |
77 | 73 | ||
78 | /** Type definition of the Ethernet header SNAP extension pointer. |
74 | /** Type definition of the Ethernet header SNAP extension pointer. |
79 | * @see eth_header_snap |
75 | * @see eth_header_snap |
80 | */ |
76 | */ |
81 | typedef eth_header_snap_t * eth_header_snap_ref; |
77 | typedef eth_header_snap_t * eth_header_snap_ref; |
82 | 78 | ||
83 | /** Type definition of the Ethernet header. |
79 | /** Type definition of the Ethernet header. |
84 | * @see eth_header |
80 | * @see eth_header |
85 | */ |
81 | */ |
86 | typedef struct eth_header eth_header_t; |
82 | typedef struct eth_header eth_header_t; |
87 | 83 | ||
88 | /** Type definition of the Ethernet header pointer. |
84 | /** Type definition of the Ethernet header pointer. |
89 | * @see eth_header |
85 | * @see eth_header |
90 | */ |
86 | */ |
91 | typedef eth_header_t * eth_header_ref; |
87 | typedef eth_header_t * eth_header_ref; |
92 | 88 | ||
93 | /** Ethernet header Link Service Access Point extension. |
89 | /** Ethernet header Link Service Access Point extension. |
94 | */ |
90 | */ |
95 | struct eth_header_lsap{ |
91 | struct eth_header_lsap{ |
96 | /** Destination Service Access Point identifier. |
92 | /** Destination Service Access Point identifier. |
97 | * The possible values are assigned by an IEEE committee. |
93 | * The possible values are assigned by an IEEE committee. |
98 | */ |
94 | */ |
99 | uint8_t dsap; |
95 | uint8_t dsap; |
100 | /** Source Service Access Point identifier. |
96 | /** Source Service Access Point identifier. |
101 | * The possible values are assigned by an IEEE committee. |
97 | * The possible values are assigned by an IEEE committee. |
102 | */ |
98 | */ |
103 | uint8_t ssap; |
99 | uint8_t ssap; |
104 | /** Control parameter. |
100 | /** Control parameter. |
105 | * The possible values are assigned by an IEEE committee. |
101 | * The possible values are assigned by an IEEE committee. |
106 | */ |
102 | */ |
107 | uint8_t ctrl; |
103 | uint8_t ctrl; |
108 | }; |
104 | }; |
109 | 105 | ||
110 | /** Ethernet header SNAP extension. |
106 | /** Ethernet header SNAP extension. |
111 | */ |
107 | */ |
112 | struct eth_header_snap{ |
108 | struct eth_header_snap{ |
113 | /** Protocol identifier or organization code. |
109 | /** Protocol identifier or organization code. |
114 | */ |
110 | */ |
115 | uint8_t proto[ 3 ]; |
111 | uint8_t proto[ 3 ]; |
116 | /** Ethernet protocol identifier in the network byte order (big endian). |
112 | /** Ethernet protocol identifier in the network byte order (big endian). |
117 | * @see ethernet_protocols.h |
113 | * @see ethernet_protocols.h |
118 | */ |
114 | */ |
119 | uint16_t ethertype; |
115 | uint16_t ethertype; |
120 | }; |
116 | }; |
121 | 117 | ||
122 | /** Ethernet header. |
118 | /** Ethernet header. |
123 | */ |
119 | */ |
124 | struct eth_header{ |
120 | struct eth_header{ |
125 | /** Controlling preamble used for the frame transmission synchronization. |
121 | /** Controlling preamble used for the frame transmission synchronization. |
126 | * All should be set to ETH_PREAMBLE. |
122 | * All should be set to ETH_PREAMBLE. |
127 | */ |
123 | */ |
128 | uint8_t preamble[ 7 ]; |
124 | uint8_t preamble[ 7 ]; |
129 | /** Start of Frame Delimiter used for the frame transmission synchronization. |
125 | /** Start of Frame Delimiter used for the frame transmission synchronization. |
130 | * Should be set to ETH_SFD. |
126 | * Should be set to ETH_SFD. |
131 | */ |
127 | */ |
132 | uint8_t sfd; |
128 | uint8_t sfd; |
133 | /** Destination host Ethernet address (MAC address). |
129 | /** Destination host Ethernet address (MAC address). |
134 | */ |
130 | */ |
135 | uint8_t dest[ ETH_ADDR ]; |
131 | uint8_t dest[ ETH_ADDR ]; |
136 | /** Source host Ethernet address (MAC address). |
132 | /** Source host Ethernet address (MAC address). |
137 | */ |
133 | */ |
138 | uint8_t src[ ETH_ADDR ]; |
134 | uint8_t src[ ETH_ADDR ]; |
139 | /** Ethernet protocol identifier in the network byte order (big endian). |
135 | /** Ethernet protocol identifier in the network byte order (big endian). |
140 | * @see ethernet_protocols.h |
136 | * @see ethernet_protocols.h |
141 | */ |
137 | */ |
142 | uint16_t ethertype; |
138 | uint16_t ethertype; |
143 | }; |
139 | }; |
144 | 140 | ||
145 | /** Ethernet header with all the extensions. |
141 | /** Ethernet header with all the extensions. |
146 | */ |
142 | */ |
147 | struct eth_header_ex{ |
143 | struct eth_header_ex{ |
148 | /** Ethernet header. |
144 | /** Ethernet header. |
149 | */ |
145 | */ |
150 | eth_header_t header; |
146 | eth_header_t header; |
151 | /** LSAP extension. |
147 | /** LSAP extension. |
152 | * If DSAP and SSAP are set to ETH_LSAP_SNAP the SNAP extension is being used. |
148 | * If DSAP and SSAP are set to ETH_LSAP_SNAP the SNAP extension is being used. |
153 | * If DSAP and SSAP fields are equal to ETH_RAW the raw Ethernet packet without any extensions is being used and the frame content starts rigth after the two fields. |
149 | * If DSAP and SSAP fields are equal to ETH_RAW the raw Ethernet packet without any extensions is being used and the frame content starts rigth after the two fields. |
154 | */ |
150 | */ |
155 | eth_header_lsap_t lsap; |
151 | eth_header_lsap_t lsap; |
156 | /** SNAP extension. |
152 | /** SNAP extension. |
157 | */ |
153 | */ |
158 | eth_header_snap_t snap; |
154 | eth_header_snap_t snap; |
159 | }; |
155 | }; |
160 | 156 | ||
- | 157 | /** Ethernet Frame Check Sequence. |
|
- | 158 | */ |
|
- | 159 | typedef uint32_t eth_fcs_t; |
|
- | 160 | ||
- | 161 | /** Ethernet Frame Check Sequence pointer. |
|
- | 162 | */ |
|
- | 163 | typedef eth_fcs_t * eth_fcs_ref; |
|
- | 164 | ||
161 | #endif |
165 | #endif |
162 | 166 | ||
163 | /** @} |
167 | /** @} |
164 | */ |
168 | */ |
165 | 169 |