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25598fdf11
Initial implementation of a basic subset of the BMP (BGP Monitoring Protocol, RFC 7854) from Akamai team. Submitted for further review and improvement.
78 lines
1.7 KiB
C
78 lines
1.7 KiB
C
/*
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* BIRD -- The BGP Monitoring Protocol (BMP)
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*
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* (c) 2020 Akamai Technologies, Inc. (Pawel Maslanka, pmaslank@akamai.com)
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*/
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#ifndef _BIRD_BMP_BUFFER_H_
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#define _BIRD_BMP_BUFFER_H_
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#include "proto/bmp/bmp.h"
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#include "proto/bmp/utils.h"
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#include <stdlib.h>
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#include "lib/resource.h"
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buffer
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bmp_buffer_alloc(pool *ppool, const size_t n);
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void
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bmp_buffer_free(buffer *buf);
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static inline void
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bmp_buffer_flush(buffer *buf)
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{
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buf->pos = buf->start;
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}
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static inline size_t
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bmp_buffer_size(const buffer *buf)
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{
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return buf->end - buf->start;
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}
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static inline size_t
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bmp_buffer_avail(const buffer *buf)
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{
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return buf->end - buf->pos;
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}
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static inline size_t
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bmp_buffer_pos(const buffer *buf)
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{
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return buf->pos - buf->start;
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}
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static inline byte *
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bmp_buffer_data(const buffer *buf)
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{
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return buf->start;
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}
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void
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bmp_buffer_need(buffer *buf, const size_t n);
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// Idea for following macros has been taken from |proto/mrt/mrt.c|
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#define BMP_DEFINE_PUT_FUNC(S, T) \
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static inline void \
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bmp_put_##S(buffer *b, const T x) \
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{ \
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bmp_buffer_need(b, sizeof(T)); \
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put_##S(b->pos, x); \
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b->pos += sizeof(T); \
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}
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BMP_DEFINE_PUT_FUNC(u8, u8)
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BMP_DEFINE_PUT_FUNC(u16, u16)
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BMP_DEFINE_PUT_FUNC(u32, u32)
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BMP_DEFINE_PUT_FUNC(u64, u64)
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BMP_DEFINE_PUT_FUNC(ip4, ip4_addr)
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BMP_DEFINE_PUT_FUNC(ip6, ip6_addr)
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void
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bmp_put_data(buffer *buf, const void *src, const size_t n);
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#endif /* _BIRD_BMP_BUFFER_H_ */ |