2 * Copyright (c) 2015 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 * ethernet/packet.h: ethernet packet format.
18 * Copyright (c) 2008 Eliot Dresselhaus
20 * Permission is hereby granted, free of charge, to any person obtaining
21 * a copy of this software and associated documentation files (the
22 * "Software"), to deal in the Software without restriction, including
23 * without limitation the rights to use, copy, modify, merge, publish,
24 * distribute, sublicense, and/or sell copies of the Software, and to
25 * permit persons to whom the Software is furnished to do so, subject to
26 * the following conditions:
28 * The above copyright notice and this permission notice shall be
29 * included in all copies or substantial portions of the Software.
31 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
32 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
33 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
34 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
35 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
36 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
37 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
40 #ifndef included_ethernet_packet_h
41 #define included_ethernet_packet_h
45 #define ethernet_type(n,s) ETHERNET_TYPE_##s = n,
46 #include <vnet/ethernet/types.def>
52 /* Source/destination address. */
60 #define ETHERNET_ADDRESS_UNICAST 0
61 #define ETHERNET_ADDRESS_MULTICAST 1
63 /* I/G bit: individual (unicast)/group (broadcast/multicast). */
65 ethernet_address_cast (u8 * a)
67 return (a[0] >> 0) & 1;
71 ethernet_address_is_locally_administered (u8 * a)
73 return (a[0] >> 1) & 1;
77 ethernet_address_set_locally_administered (u8 * a)
82 /* For VLAN ethernet type. */
85 /* 3 bit priority, 1 bit CFI and 12 bit vlan id. */
86 u16 priority_cfi_and_id;
88 #define ETHERNET_N_VLAN (1 << 12)
90 /* Inner ethernet type. */
92 } ethernet_vlan_header_t;
95 /* VLAN with ethertype first and vlan id second */
101 /* 3 bit priority, 1 bit CFI and 12 bit vlan id. */
102 u16 priority_cfi_and_id;
103 } ethernet_vlan_header_tv_t;
105 /* PBB header with B-TAG - backbone VLAN indicator and I-TAG - service encapsulation */
108 /* Backbone source/destination address. */
114 /* 3 bit priority, 1 bit DEI and 12 bit vlan id */
119 /* 3 bit priority, 1 bit DEI, 1 bit UCA, 3 bit RES and 24 bit I_SID (service identifier) */
120 u32 priority_dei_uca_res_sid;
122 #define ETHERNET_N_PBB (1 << 24)
123 } ethernet_pbb_header_t;
126 typedef CLIB_PACKED (struct
128 /* Backbone source/destination address. */
134 /* 3 bit priority, 1 bit DEI and 12 bit vlan id */
139 /* 3 bit priority, 1 bit DEI, 1 bit UCA, 3 bit RES and 24 bit I_SID (service identifier) */
140 u32 priority_dei_uca_res_sid;
141 }) ethernet_pbb_header_packed_t;
144 #endif /* included_ethernet_packet_h */
147 * fd.io coding-style-patch-verification: ON
150 * eval: (c-set-style "gnu")