lsquic_packet_in.c revision bfc7bfd8 
1/* Copyright (c) 2017 LiteSpeed Technologies Inc.  See LICENSE. */
2#include <assert.h>
3#include <stdint.h>
4#include <string.h>
5
6#include "lsquic_int_types.h"
7#include "lsquic_types.h"
8#include "lsquic_packet_common.h"
9#include "lsquic_packet_in.h"
10
11
12int
13packet_in_ver_first (const lsquic_packet_in_t *packet_in, struct ver_iter *vi,
14                     lsquic_ver_tag_t *ver_tag)
15{
16    vi->packet_in = packet_in;
17    vi->off       = packet_in->pi_quic_ver;
18    return packet_in_ver_next(vi, ver_tag);
19}
20
21
22int
23packet_in_ver_next (struct ver_iter *vi, lsquic_ver_tag_t *ver_tag)
24{
25    if (vi->off + 4 <= vi->packet_in->pi_header_sz)
26    {
27        memcpy(ver_tag, vi->packet_in->pi_data + vi->off, 4);
28        vi->off += 4;
29        return 1;
30    }
31    else
32    {
33        assert(vi->packet_in->pi_header_sz == vi->off);
34        return 0;
35    }
36}
37
38
39size_t
40lsquic_packet_in_mem_used (const struct lsquic_packet_in *packet_in)
41{
42    size_t size;
43
44    size = sizeof(*packet_in);
45
46    if (packet_in->pi_flags & PI_OWN_DATA)
47        size += packet_in->pi_data_sz;
48
49    return size;
50}
51