+++ /dev/null
-#ifndef included_vnet_sr_packet_h
-#define included_vnet_sr_packet_h
-
-#include <vnet/ip/ip.h>
-
-/*
- * ipv6 segment-routing header format
- *
- * Copyright (c) 2013 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/*
- * The Segment Routing Header (SRH) is defined as follows:
- *
- * 0 1 2 3
- * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * | Next Header | Hdr Ext Len | Routing Type | Segments Left |
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * | First Segment | Flags | RESERVED |
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * | |
- * | Segment List[0] (128 bits IPv6 address) |
- * | |
- * | |
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * | |
- * | |
- * ...
- * | |
- * | |
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * | |
- * | Segment List[n] (128 bits IPv6 address) |
- * | |
- * | |
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * // //
- * // Optional Type Length Value objects (variable) //
- * // //
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- *
- * where:
- *
- * o Next Header: 8-bit selector. Identifies the type of header
- * immediately following the SRH.
- *
- * o Hdr Ext Len: 8-bit unsigned integer, is the length of the SRH
- * header in 8-octet units, not including the first 8 octets.
- *
- * o Routing Type: TBD, to be assigned by IANA (suggested value: 4).
- *
- * o Segments Left. Defined in [RFC2460], it contains the index, in
- * the Segment List, of the next segment to inspect. Segments Left
- * is decremented at each segment.
- *
- * o First Segment: contains the index, in the Segment List, of the
- * first segment of the path which is in fact the last element of the
- * Segment List.
- *
- * o Flags: 8 bits of flags. Following flags are defined:
- *
- * 0 1 2 3 4 5 6 7
- * +-+-+-+-+-+-+-+-+
- * |U|P|O|A|H| U |
- * +-+-+-+-+-+-+-+-+
- *
- * U: Unused and for future use. SHOULD be unset on transmission
- * and MUST be ignored on receipt.
- *
- * P-flag: Protected flag. Set when the packet has been rerouted
- * through FRR mechanism by an SR endpoint node.
- *
- * O-flag: OAM flag. When set, it indicates that this packet is
- * an operations and management (OAM) packet.
- *
- * A-flag: Alert flag. If present, it means important Type Length
- * Value (TLV) objects are present. See Section 3.1 for details
- * on TLVs objects.
- *
- * H-flag: HMAC flag. If set, the HMAC TLV is present and is
- * encoded as the last TLV of the SRH. In other words, the last
- * 36 octets of the SRH represent the HMAC information. See
- * Section 3.1.5 for details on the HMAC TLV.
- *
- * o RESERVED: SHOULD be unset on transmission and MUST be ignored on
- * receipt.
- *
- * o Segment List[n]: 128 bit IPv6 addresses representing the nth
- * segment in the Segment List. The Segment List is encoded starting
- * from the last segment of the path. I.e., the first element of the
- * segment list (Segment List [0]) contains the last segment of the
- * path while the last segment of the Segment List (Segment List[n])
- * contains the first segment of the path. The index contained in
- * "Segments Left" identifies the current active segment.
- *
- * o Type Length Value (TLV) are described in Section 3.1.
- *
- */
-
-#ifndef IPPROTO_IPV6_ROUTE
-#define IPPROTO_IPV6_ROUTE 43
-#endif
-
-#define ROUTING_HEADER_TYPE_SR 4
-
-typedef struct
-{
- /* Protocol for next header. */
- u8 protocol;
- /*
- * Length of routing header in 8 octet units,
- * not including the first 8 octets
- */
- u8 length;
-
- /* Type of routing header; type 4 = segement routing */
- u8 type;
-
- /* Next segment in the segment list */
- u8 segments_left;
-
- /* Pointer to the first segment in the header */
- u8 first_segment;
-
- /* Flag bits */
-#define IP6_SR_HEADER_FLAG_PROTECTED (0x40)
-#define IP6_SR_HEADER_FLAG_OAM (0x20)
-#define IP6_SR_HEADER_FLAG_ALERT (0x10)
-#define IP6_SR_HEADER_FLAG_HMAC (0x80)
-
- /* values 0x0, 0x4 - 0x7 are reserved */
- u8 flags;
- u16 reserved;
-
- /* The segment elts */
- ip6_address_t segments[0];
-} __attribute__ ((packed)) ip6_sr_header_t;
-
-/*
-* fd.io coding-style-patch-verification: ON
-*
-* Local Variables:
-* eval: (c-set-style "gnu")
-* End:
-*/
-
-#endif /* included_vnet_sr_packet_h */
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