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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.
58 lines
1013 B
C
58 lines
1013 B
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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#include "proto/bmp/buffer.h"
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buffer
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bmp_buffer_alloc(pool *ppool, const size_t n)
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{
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buffer buf;
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buf.start = mb_alloc(ppool, n);
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buf.pos = buf.start;
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buf.end = buf.start + n;
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return buf;
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}
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void
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bmp_buffer_free(buffer *buf)
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{
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mb_free(buf->start);
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buf->start = buf->pos = buf->end = NULL;
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}
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static void
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bmp_buffer_grow(buffer *buf, const size_t n)
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{
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const size_t pos = bmp_buffer_pos(buf);
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buf->start = mb_realloc(buf->start, n);
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buf->pos = buf->start + pos;
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buf->end = buf->start + n;
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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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{
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if (bmp_buffer_avail(buf) < n)
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{
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bmp_buffer_grow(buf, n);
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}
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}
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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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{
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if (!n)
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{
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return;
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}
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bmp_buffer_need(buf, n);
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memcpy(buf->pos, src, n);
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buf->pos += n;
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} |