diff options
Diffstat (limited to 'lib/includes/hicn/mapme.h')
| -rw-r--r-- | lib/includes/hicn/mapme.h | 70 |
1 files changed, 39 insertions, 31 deletions
diff --git a/lib/includes/hicn/mapme.h b/lib/includes/hicn/mapme.h index 8fae44530..63a5cd77e 100644 --- a/lib/includes/hicn/mapme.h +++ b/lib/includes/hicn/mapme.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2017-2019 Cisco and/or its affiliates. + * Copyright (c) 2021 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: @@ -20,7 +20,7 @@ #ifndef HICN_MAPME_H #define HICN_MAPME_H -#include <stdint.h> // u32 +#include <stdint.h> // u32 #include <stdbool.h> #include "common.h" @@ -32,16 +32,16 @@ */ typedef struct { - /** MAP-Me enabled flag (default: false) */ + /** MAP-Me enabled flag (default: false) */ bool enabled; - /** timescale (T_U parameter) in ms (default: 0 for no notifications) */ + /** timescale (T_U parameter) in ms (default: 0 for no notifications) */ u32 timescale; - /** retransmission timer in ms (default: 50) */ + /** retransmission timer in ms (default: 50) */ u32 retx; - /** - * Discovery enabled flag (default: true, should be true if mandatory is - * notifications are enabled) - */ + /** + * Discovery enabled flag (default: true, should be true if mandatory is + * notifications are enabled) + */ bool discovery; } hicn_mapme_conf_t; @@ -74,37 +74,45 @@ typedef struct seq_t seq; } mapme_params_t; - /* MAP-Me API */ -size_t hicn_mapme_create_packet (u8 * buf, const hicn_prefix_t * prefix, - const mapme_params_t * params); -size_t hicn_mapme_create_ack (u8 * buf, const mapme_params_t * params); -int hicn_mapme_parse_packet (const u8 * packet, hicn_prefix_t * prefix, - mapme_params_t * params); +size_t hicn_mapme_create_packet (u8 *buf, const hicn_prefix_t *prefix, + const mapme_params_t *params); +size_t hicn_mapme_create_ack (u8 *buf, const mapme_params_t *params); +int hicn_mapme_parse_packet (const u8 *packet, hicn_prefix_t *prefix, + mapme_params_t *params); /* Implementation & parsing : ICMP Redirect */ #define HICN_MAPME_ACK_FLAG (0x20 | 0x60) -#define HICN_MAPME_ICMP_TYPE_IPV4 5 -#define HICN_MAPME_ICMP_TYPE_IPV6 137 -#define HICN_MAPME_ICMP_TYPE_ACK_IPV4 (HICN_MAPME_ICMP_TYPE_IPV4 | HICN_MAPME_ACK_FLAG) -#define HICN_MAPME_ICMP_TYPE_ACK_IPV6 (HICN_MAPME_ICMP_TYPE_IPV6 | HICN_MAPME_ACK_FLAG) -#define HICN_MAPME_ICMP_CODE 0 /* Redirect Datagrams for the Network (or subnet) */ - -#define HICN_MAPME_TYPE_IS_IU(type) ((type == HICN_MAPME_ICMP_TYPE_IPV4) || (type == HICN_MAPME_ICMP_TYPE_IPV6)) -#define HICN_MAPME_TYPE_IS_IU_ACK(type) ((type == HICN_MAPME_ICMP_TYPE_ACK_IPV4) || (type == HICN_MAPME_ICMP_TYPE_ACK_IPV6)) - -#define HICN_MAPME_IS_IU(type, code) (HICN_MAPME_TYPE_IS_IU(type) && (code == HICN_MAPME_ICMP_CODE)) -#define HICN_MAPME_IS_ACK(type, code) (HICN_MAPME_TYPE_IS_IU_ACK(type) && (code == HICN_MAPME_ICMP_CODE)) - -#define HICN_IS_MAPME(type, code) (HICN_MAPME_IS_IU(type, code) || HICN_MAPME_IS_ACK(type, code)) +#define HICN_MAPME_ICMP_TYPE_IPV4 5 +#define HICN_MAPME_ICMP_TYPE_IPV6 137 +#define HICN_MAPME_ICMP_TYPE_ACK_IPV4 \ + (HICN_MAPME_ICMP_TYPE_IPV4 | HICN_MAPME_ACK_FLAG) +#define HICN_MAPME_ICMP_TYPE_ACK_IPV6 \ + (HICN_MAPME_ICMP_TYPE_IPV6 | HICN_MAPME_ACK_FLAG) +#define HICN_MAPME_ICMP_CODE \ + 0 /* Redirect Datagrams for the Network (or subnet) */ + +#define HICN_MAPME_TYPE_IS_IU(type) \ + ((type == HICN_MAPME_ICMP_TYPE_IPV4) || (type == HICN_MAPME_ICMP_TYPE_IPV6)) +#define HICN_MAPME_TYPE_IS_IU_ACK(type) \ + ((type == HICN_MAPME_ICMP_TYPE_ACK_IPV4) || \ + (type == HICN_MAPME_ICMP_TYPE_ACK_IPV6)) + +#define HICN_MAPME_IS_IU(type, code) \ + (HICN_MAPME_TYPE_IS_IU (type) && (code == HICN_MAPME_ICMP_CODE)) +#define HICN_MAPME_IS_ACK(type, code) \ + (HICN_MAPME_TYPE_IS_IU_ACK (type) && (code == HICN_MAPME_ICMP_CODE)) + +#define HICN_IS_MAPME(type, code) \ + (HICN_MAPME_IS_IU (type, code) || HICN_MAPME_IS_ACK (type, code)) /* Fast check for ACK flag */ #define HICN_MAPME_IS_ACK_FAST(icmp_type) (icmp_type & HICN_MAPME_ACK_FLAG) /* Default TTL */ -#define HICN_MAPME_TTL 255 // typical for redirect (ref?) +#define HICN_MAPME_TTL 255 // typical for redirect (ref?) /* * The length of the MAPME4 header struct must be 120 bytes. @@ -143,8 +151,8 @@ typedef union hicn_mapme_v6_header_t v6; } hicn_mapme_header_t; -#define HICN_MAPME_V4_HDRLEN sizeof(hicn_mapme_v4_header_t) -#define HICN_MAPME_V6_HDRLEN sizeof(hicn_mapme_v6_header_t) +#define HICN_MAPME_V4_HDRLEN sizeof (hicn_mapme_v4_header_t) +#define HICN_MAPME_V6_HDRLEN sizeof (hicn_mapme_v6_header_t) static_assert (EXPECTED_MAPME_V4_HDRLEN == HICN_MAPME_V4_HDRLEN, "Size of MAPME_V4 struct does not match its expected size."); |