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/*
* Copyright (c) 2015 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.
*/
#ifndef __included_ip6_hop_by_hop_packet_h__
#define __included_ip6_hop_by_hop_packet_h__
typedef struct {
/* Protocol for next header */
u8 protocol;
/*
* Length of hop_by_hop header in 8 octet units,
* not including the first 8 octets
*/
u8 length;
} ip6_hop_by_hop_header_t;
typedef struct {
/* Option Type */
#define HBH_OPTION_TYPE_SKIP_UNKNOWN (0x0 << 6)
#define HBH_OPTION_TYPE_DISCARD_UNKNOWN (0x1 << 6)
#define HBH_OPTION_TYPE_DISCARD_UNKNOWN_ICMP (0x2 << 6)
#define HBH_OPTION_TYPE_DISCARD_UNKNOWN_ICMP_NOT_MCAST (0x3 << 6)
#define HBH_OPTION_TYPE_DATA_CHANGE_ENROUTE (1<<5)
#define HBH_OPTION_TYPE_MASK (0x1F)
u8 type;
/* Length in octets of the option data field */
u8 length;
} ip6_hop_by_hop_option_t;
/* $$$$ IANA banana constants */
#define HBH_OPTION_TYPE_IOAM_DATA_LIST 1
#define HBH_OPTION_TYPE_IOAM_PROOF_OF_WORK 2
typedef struct {
u32 ttl_node_id;
u16 ingress_if;
u16 egress_if;
u32 timestamp;
u32 app_data;
} ioam_data_list_element_t;
typedef CLIB_PACKED(struct {
ip6_hop_by_hop_option_t hdr;
u8 data_list_elts_left;
ioam_data_list_element_t elts[0];
}) ioam_trace_option_t;
typedef CLIB_PACKED(struct {
ip6_hop_by_hop_option_t hdr;
u8 pow_type;
u8 reserved;
u32 random[2];
u32 cumulative[2];
}) ioam_pow_option_t;
#endif /* __included_ip6_hop_by_hop_packet_h__ */
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