2 * Copyright (c) 2017 SUSE LLC.
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 #ifndef included_vnet_geneve_packet_h
17 #define included_vnet_geneve_packet_h
21 * As per draft https://tools.ietf.org/html/draft-ietf-nvo3-geneve-05
25 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
26 * | Option Class | Type |R|R|R| Length |
27 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
28 * | Variable Option Data |
29 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
31 #define GENEVE_MAX_OPT_LENGTH 128
35 * As per draft https://tools.ietf.org/html/draft-ietf-nvo3-geneve-05
39 * +----------------+--------------------------------------+
40 * | Option Class | Description |
41 * +----------------+--------------------------------------+
42 * | 0x0000..0x00FF | Unassigned - IETF Review |
44 * | 0x0101 | Open vSwitch |
45 * | 0x0102 | Open Virtual Networking (OVN) |
46 * | 0x0103 | In-band Network Telemetry (INT) |
48 * | 0x0105..0xFFEF | Unassigned - First Come First Served |
49 * | 0xFFF0..FFFF | Experimental |
50 * +----------------+--------------------------------------+
52 #define LINUX_OPT_CLASS 0x0100
53 #define OVS_OPT_CLASS 0x0101
54 #define OVN_OPT_CLASS 0x0102
55 #define INT_OPT_CLASS 0x0103
56 #define VMWARE_OPT_CLASS 0x0104
69 * As per draft https://tools.ietf.org/html/draft-ietf-nvo3-geneve-05
73 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
74 * |Ver| Opt Len |O|C| Rsvd. | Protocol Type |
75 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
76 * | Virtual Network Identifier (VNI) | Reserved |
77 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
78 * | Variable Length Options |
79 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
82 #define GENEVE_BASE_HEADER_LENGTH 8 // GENEVE BASE HEADER in bytes
83 #define GENEVE_MAX_TOTAL_HDR_LENGTH 260
85 #define GENEVE_VERSION 0
86 #define GENEVE_ETH_PROTOCOL 0x6558
93 u8 critical_options:1;
98 geneve_options_t opts[];
102 vnet_get_geneve_vni (geneve_header_t * h)
104 return (clib_net_to_host_u32 (h->vni) >> 8);
108 vnet_set_geneve_vni (geneve_header_t * h, u32 vni)
110 h->vni = clib_host_to_net_u32 (vni << 8);
114 vnet_get_geneve_version (geneve_header_t * h)
116 return (clib_net_to_host_u32 (h->ver) >> 30);
120 vnet_set_geneve_version (geneve_header_t * h, u8 version)
122 h->ver = clib_host_to_net_u32 (version << 30);
126 vnet_get_geneve_options_len (geneve_header_t * h)
128 return (clib_net_to_host_u32 (h->opt_len) >> 24);
132 vnet_set_geneve_options_len (geneve_header_t * h, u8 len)
134 h->opt_len = clib_host_to_net_u32 (len << 24);
138 vnet_get_geneve_oamframe_bit (geneve_header_t * h)
140 return (clib_net_to_host_u32 (h->oam_frame) >> 23);
144 vnet_set_geneve_oamframe_bit (geneve_header_t * h, u8 oam)
146 h->oam_frame = clib_host_to_net_u32 (oam << 23);
150 vnet_get_geneve_critical_bit (geneve_header_t * h)
152 return (clib_net_to_host_u32 (h->critical_options) >> 22);
156 vnet_set_geneve_critical_bit (geneve_header_t * h, u8 critical_opts)
158 h->critical_options = clib_host_to_net_u32 (critical_opts << 22);
162 vnet_get_geneve_protocol (geneve_header_t * h)
164 return clib_net_to_host_u32 (h->protocol);
168 vnet_set_geneve_protocol (geneve_header_t * h, u16 protocol)
170 h->protocol = clib_host_to_net_u32 (protocol);
175 * fd.io coding-style-patch-verification: ON
178 * eval: (c-set-style "gnu")