+++ /dev/null
-/*
- * Copyright (c) 2016 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.
- */
-/**
- * @file
- * @brief LISP-GPE packet header structure
- *
- */
-
-#ifndef included_lisp_gpe_packet_h
-#define included_lisp_gpe_packet_h
-
-/*
- * From draft-lewis-lisp-gpe-02.txt
- *
- * 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
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * |N|L|E|V|I|P|R|O|Ver| Reserved | Next Protocol |
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * | Instance ID/Locator-Status-Bits |
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- *
- * N: The N-bit is the nonce-present bit. When this bit is set to 1,
- * the low-order 24 bits of the first 32 bits of the LISP header
- * contain a Nonce. See Section 6.3.1 for details. Both N- and
- * V-bits MUST NOT be set in the same packet. If they are, a
- * decapsulating ETR MUST treat the 'Nonce/Map-Version' field as
- * having a Nonce value present.
- *
- * L: The L-bit is the 'Locator-Status-Bits' field enabled bit. When
- * this bit is set to 1, the Locator-Status-Bits in the second
- * 32 bits of the LISP header are in use.
- *
- * E: The E-bit is the echo-nonce-request bit. This bit MUST be ignored
- * and has no meaning when the N-bit is set to 0. When the N-bit is
- * set to 1 and this bit is set to 1, an ITR is requesting that the
- * nonce value in the 'Nonce' field be echoed back in LISP-
- * encapsulated packets when the ITR is also an ETR. See
- * Section 6.3.1 for details.
- *
- * V: The V-bit is the Map-Version present bit. When this bit is set to
- * 1, the N-bit MUST be 0. Refer to Section 6.6.3 for more details.
- *
- * I: The I-bit is the Instance ID bit. See Section 5.5 for more
- * details. When this bit is set to 1, the 'Locator-Status-Bits'
- * field is reduced to 8 bits and the high-order 24 bits are used as
- * an Instance ID. If the L-bit is set to 0, then the low-order
- * 8 bits are transmitted as zero and ignored on receipt.
- *
- * P Bit: Flag bit 5 is defined as the Next Protocol bit. The P bit
- * MUST be set to 1 to indicate the presence of the 8 bit next
- * protocol field.
- *
- * P = 0 indicates that the payload MUST conform to LISP as defined
- * in [RFC6830].
- *
- * Flag bit 5 was chosen as the P bit because this flag bit is
- * currently unallocated in LISP [RFC6830].
- *
- * O: Flag bit 7 is defined as the O bit. When the O bit is set to 1, the
- * packet is an OAM packet and OAM processing MUST occur. The OAM
- * protocol details are out of scope for this document. As with the
- * P-bit, bit 7 is currently a reserved flag in [RFC6830].
- *
- * Next Protocol Field: The lower 8 bits of the first word are used to
- * carry a next protocol. This next protocol field contains the
- * protocol of the encapsulated payload packet.
- *
- * LISP [RFC6830] uses the lower 16 bits of the first word for either
- * a nonce, an echo-nonce ([RFC6830]) or to support map-versioning
- * ([RFC6834]). These are all optional capabilities that are
- * indicated by setting the N, E, and the V bit respectively.
- *
- * To maintain the desired data plane compatibility, when the P bit
- * is set, the N, E, and V bits MUST be set to zero.
- *
- * A new protocol registry will be requested from IANA for the Next
- * Protocol field. This draft defines the following Next Protocol
- * values:
- *
- * 0x1 : IPv4
- * 0x2 : IPv6
- * 0x3 : Ethernet
- * 0x4: Network Service Header
- */
-
-/** LISP-GPE header */
-typedef struct
-{
- u8 flags;
- u8 ver_res;
- u8 res;
- u8 next_protocol;
- u32 iid;
-} lisp_gpe_header_t;
-
-#define foreach_lisp_gpe_flag_bit \
-_(N, 0x80) \
-_(L, 0x40) \
-_(E, 0x20) \
-_(V, 0x10) \
-_(I, 0x08) \
-_(P, 0x04) \
-_(O, 0x01)
-
-typedef enum
-{
-#define _(n,v) LISP_GPE_FLAGS_##n = v,
- foreach_lisp_gpe_flag_bit
-#undef _
-} vnet_lisp_gpe_flag_bit_t;
-
-#define LISP_GPE_VERSION 0x0
-
-#define LISP_GPE_NEXT_PROTOCOL_IP4 0x1
-#define LISP_GPE_NEXT_PROTOCOL_IP6 0x2
-#define LISP_GPE_NEXT_PROTOCOL_ETHERNET 0x3
-#define LISP_GPE_NEXT_PROTOCOL_NSH 0x4
-
-typedef enum
-{
- LISP_GPE_NEXT_PROTO_IP4 = 1,
- LISP_GPE_NEXT_PROTO_IP6,
- LISP_GPE_NEXT_PROTO_ETHERNET,
- LISP_GPE_NEXT_PROTO_NSH,
- LISP_GPE_NEXT_PROTOS
-} lisp_gpe_next_protocol_e;
-
-#endif /* included_lisp_gpe_packet_h */
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
Code Review / vpp.git / blobdiff