fb11e647
 vrobic
reseau statique a...
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
/*
* Copyright (C) 2015 Martine Lenders <mlenders@inf.fu-berlin.de>
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @{
*
* @file
* @author Martine Lenders <mlenders@inf.fu-berlin.de>
* @author Oliver Hahm <oliver.hahm@inria.fr>
*/
#include "net/conn.h"
#include "net/ipv6/hdr.h"
#include "net/gnrc/conn.h"
#include "net/gnrc/ipv6/hdr.h"
#include "net/gnrc/ipv6/netif.h"
#include "net/udp.h"
int gnrc_conn_recvfrom(conn_t *conn, void *data, size_t max_len, void *addr, size_t *addr_len,
uint16_t *port)
{
msg_t msg;
int timeout = 3;
while ((timeout--) > 0) {
gnrc_pktsnip_t *pkt, *l3hdr;
size_t size = 0;
msg_receive(&msg);
switch (msg.type) {
case GNRC_NETAPI_MSG_TYPE_RCV:
pkt = msg.content.ptr;
if (pkt->size > max_len) {
return -ENOMEM;
}
l3hdr = gnrc_pktsnip_search_type(pkt, conn->l3_type);
if (l3hdr == NULL) {
msg_send_to_self(&msg); /* requeue invalid messages */
continue;
}
#if defined(MODULE_CONN_UDP) || defined(MODULE_CONN_TCP)
if ((conn->l4_type != GNRC_NETTYPE_UNDEF) && (port != NULL)) {
gnrc_pktsnip_t *l4hdr;
l4hdr = gnrc_pktsnip_search_type(pkt, conn->l4_type);
if (l4hdr == NULL) {
msg_send_to_self(&msg); /* requeue invalid messages */
continue;
}
*port = byteorder_ntohs(((udp_hdr_t *)l4hdr->data)->src_port);
}
#endif /* defined(MODULE_CONN_UDP) */
if (addr != NULL) {
memcpy(addr, &((ipv6_hdr_t *)l3hdr->data)->src, sizeof(ipv6_addr_t));
*addr_len = sizeof(ipv6_addr_t);
}
memcpy(data, pkt->data, pkt->size);
size = pkt->size;
gnrc_pktbuf_release(pkt);
return (int)size;
default:
(void)port;
msg_send_to_self(&msg); /* requeue invalid messages */
break;
}
}
return -ETIMEDOUT;
}
#ifdef MODULE_GNRC_IPV6
bool gnrc_conn6_set_local_addr(uint8_t *conn_addr, const ipv6_addr_t *addr)
{
ipv6_addr_t *tmp;
if (!ipv6_addr_is_unspecified(addr) &&
!ipv6_addr_is_loopback(addr) &&
gnrc_ipv6_netif_find_by_addr(&tmp, addr) == KERNEL_PID_UNDEF) {
return false;
}
else if (ipv6_addr_is_loopback(addr) || ipv6_addr_is_unspecified(addr)) {
ipv6_addr_set_unspecified((ipv6_addr_t *)conn_addr);
}
else {
memcpy(conn_addr, addr, sizeof(ipv6_addr_t));
}
return true;
}
ipv6_addr_t *conn_find_best_source(const ipv6_addr_t *dst)
{
ipv6_addr_t *local = NULL;
gnrc_ipv6_netif_find_by_prefix(&local, dst);
return local;
}
#endif
/** @} */
|