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/*
* Copyright (c) 2021-2022 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 protocol/ah.h
* @brief AH packet header
*/
#ifndef HICN_PROTOCOL_NEW_H
#define HICN_PROTOCOL_NEW_H
#include <hicn/common.h>
#include <hicn/name.h>
/*
* The length of the new header struct must be 28 bytes.
*/
#define EXPECTED_NEW_HDRLEN 32
typedef struct
{
u8 version_reserved;
u8 flags;
/* Size of the payload direcly after the new header */
u16 payload_len;
u32 lifetime;
/* Name prefix and suffix */
hicn_ip_address_t prefix;
u32 suffix;
/* We reserve 32 bits for the path label */
u32 path_label;
} _new_header_t;
#define NEW_HDRLEN sizeof (_new_header_t)
static_assert (EXPECTED_NEW_HDRLEN == NEW_HDRLEN,
"Size of new_header Struct does not match its expected size.");
/* TCP flags bit 0 first. */
#define foreach_hicn_new_flag \
_ (SIG) /**< Signature header after. */ \
_ (MAN) /**< Payload type is manifest. */ \
_ (INT) /**< Packet is interest. */ \
_ (LST) /**< Last data. */
enum
{
#define _(f) HICN_NEW_FLAG_BIT_##f,
foreach_hicn_new_flag
#undef _
HICN_NEW_N_FLAG_BITS,
};
enum
{
#define _(f) HICN_NEW_FLAG_##f = 1 << HICN_NEW_FLAG_BIT_##f,
foreach_hicn_new_flag
#undef _
};
static inline int
_get_new_header_version (const _new_header_t *new_hdr)
{
return ((new_hdr->version_reserved >> 4) & 0x0F);
}
static inline void
_set_new_header_version (_new_header_t *new_hdr)
{
new_hdr->version_reserved = (0x9 << 4) & 0xF0;
}
#endif /* HICN_PROTOCOL_NEW_H */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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