lsquic_packet_in.c revision 229fce07
1229fce07SDmitri Tikhonov/* Copyright (c) 2017 - 2019 LiteSpeed Technologies Inc.  See LICENSE. */
250aadb33SDmitri Tikhonov#include <assert.h>
350aadb33SDmitri Tikhonov#include <stdint.h>
450aadb33SDmitri Tikhonov#include <string.h>
5461e84d8SAmol Deshpande#include <sys/queue.h>
6461e84d8SAmol Deshpande#ifdef WIN32
7461e84d8SAmol Deshpande#include <vc_compat.h>
8461e84d8SAmol Deshpande#endif
950aadb33SDmitri Tikhonov
1050aadb33SDmitri Tikhonov#include "lsquic_int_types.h"
1150aadb33SDmitri Tikhonov#include "lsquic_types.h"
12bfc7bfd8SDmitri Tikhonov#include "lsquic_packet_common.h"
1350aadb33SDmitri Tikhonov#include "lsquic_packet_in.h"
1450aadb33SDmitri Tikhonov
1550aadb33SDmitri Tikhonov
1650aadb33SDmitri Tikhonovint
1750aadb33SDmitri Tikhonovpacket_in_ver_first (const lsquic_packet_in_t *packet_in, struct ver_iter *vi,
1850aadb33SDmitri Tikhonov                     lsquic_ver_tag_t *ver_tag)
1950aadb33SDmitri Tikhonov{
2050aadb33SDmitri Tikhonov    vi->packet_in = packet_in;
2150aadb33SDmitri Tikhonov    vi->off       = packet_in->pi_quic_ver;
2250aadb33SDmitri Tikhonov    return packet_in_ver_next(vi, ver_tag);
2350aadb33SDmitri Tikhonov}
2450aadb33SDmitri Tikhonov
2550aadb33SDmitri Tikhonov
2650aadb33SDmitri Tikhonovint
2750aadb33SDmitri Tikhonovpacket_in_ver_next (struct ver_iter *vi, lsquic_ver_tag_t *ver_tag)
2850aadb33SDmitri Tikhonov{
2950aadb33SDmitri Tikhonov    if (vi->off + 4 <= vi->packet_in->pi_header_sz)
3050aadb33SDmitri Tikhonov    {
3150aadb33SDmitri Tikhonov        memcpy(ver_tag, vi->packet_in->pi_data + vi->off, 4);
3250aadb33SDmitri Tikhonov        vi->off += 4;
3350aadb33SDmitri Tikhonov        return 1;
3450aadb33SDmitri Tikhonov    }
3550aadb33SDmitri Tikhonov    else
3650aadb33SDmitri Tikhonov    {
3750aadb33SDmitri Tikhonov        assert(vi->packet_in->pi_header_sz == vi->off);
3850aadb33SDmitri Tikhonov        return 0;
3950aadb33SDmitri Tikhonov    }
4050aadb33SDmitri Tikhonov}
41c51ce338SDmitri Tikhonov
42c51ce338SDmitri Tikhonov
43c51ce338SDmitri Tikhonovsize_t
44c51ce338SDmitri Tikhonovlsquic_packet_in_mem_used (const struct lsquic_packet_in *packet_in)
45c51ce338SDmitri Tikhonov{
46c51ce338SDmitri Tikhonov    size_t size;
47c51ce338SDmitri Tikhonov
48c51ce338SDmitri Tikhonov    size = sizeof(*packet_in);
49c51ce338SDmitri Tikhonov
50c51ce338SDmitri Tikhonov    if (packet_in->pi_flags & PI_OWN_DATA)
51c51ce338SDmitri Tikhonov        size += packet_in->pi_data_sz;
52c51ce338SDmitri Tikhonov
53c51ce338SDmitri Tikhonov    return size;
54c51ce338SDmitri Tikhonov}
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