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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.
*/
#ifndef __HICN_PARSER_H__
#define __HICN_PARSER_H__
#include <vlib/vlib.h>
#include "hicn.h"
#include "error.h"
#include "infra.h"
/**
* @file parser.h
*/
#define PARSE(PACKET_TYPE, SIZE) \
do \
{ \
if (pkt == NULL) \
return HICN_ERROR_PARSER_PKT_INVAL; \
\
int ret = HICN_ERROR_NONE; \
\
u16 *port; \
hicn_lifetime_t *lifetime; \
\
hicn_packet_buffer_t *pkbuf = &hicn_get_buffer (pkt)->pkbuf; \
\
hicn_packet_set_buffer (pkbuf, vlib_buffer_get_current (pkt), (SIZE), \
(SIZE)); \
hicn_packet_analyze (&hicn_get_buffer (pkt)->pkbuf); \
\
/* get source port*/ \
port = &hicn_get_buffer (pkt)->port; \
hicn_packet_get_src_port (pkbuf, port); \
if (PREDICT_FALSE (ret)) \
{ \
return HICN_ERROR_PARSER_PKT_INVAL; \
} \
\
/* get lifetime*/ \
lifetime = &hicn_get_buffer (pkt)->lifetime; \
hicn_packet_get_lifetime (pkbuf, lifetime); \
\
if (*lifetime > hicn_main.pit_lifetime_max_ms) \
*lifetime = hicn_main.pit_lifetime_max_ms; \
\
return ret; \
} \
while (0)
#if 0
hicn_name_t *name; \
/* get name and name length*/
name = &hicn_get_buffer (pkt)->name;
ret = hicn_##PACKET_TYPE##_get_name (pkbuf, name);
if (PREDICT_FALSE (ret))
{
if (type.l2 == IPPROTO_ICMPV4 || type.l2 == IPPROTO_ICMPV6)
{
return HICN_ERROR_PARSER_MAPME_PACKET;
}
return HICN_ERROR_PARSER_PKT_INVAL;
}
#endif
/**
* @brief Parse a interest packet
*
* @param pkt vlib buffer holding the interest
* @param name [RETURNED] variable that will point to the hicn name
* @param namelen [RETURNED] variable that will hold the length of the name
* @param port [RETURNED] variable that will hold the source port of the packet
* @param pkt_hdrp [RETURNED] valiable that will point to the packet header
* @param isv6 [RETURNED] variable that will be equale to 1 is the header is
* ipv6
*/
always_inline int
hicn_interest_parse_pkt (vlib_buffer_t *pkt, uword size)
{
PARSE (interest, size);
}
/**
* @brief Parse a data packet
*
* @param pkt vlib buffer holding the data
* @param name [RETURNED] variable that will point to the hicn name
* @param namelen [RETURNED] variable that will hold the length of the name
* @param port [RETURNED] variable that will hold the source port of the packet
* @param pkt_hdrp [RETURNED] valiable that will point to the packet header
* @param isv6 [RETURNED] variable that will be equale to 1 is the header is
* ipv6
*/
always_inline int
hicn_data_parse_pkt (vlib_buffer_t *pkt, uword size)
{
PARSE (data, size);
}
#endif /* __HICN_PARSER_H__ */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables: eval: (c-set-style "gnu") End:
*/
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