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
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
|
/*
* Copyright (C) 2015 Freie Universität Berlin
*
* 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.
*/
/**
* @{
* @ingroup net_gnrc_netapi
* @file
* @brief This file contains a number of helper functions that provide
* some shortcuts for some always repeating code snippets when
* servicing the netapi interface
*
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
* @}
*/
#include "mbox.h"
#include "msg.h"
#include "net/gnrc/netreg.h"
#include "net/gnrc/pktbuf.h"
#include "net/gnrc/netapi.h"
#define ENABLE_DEBUG (0)
#include "debug.h"
/**
* @brief Unified function for getting and setting netapi options
*
* @param[in] pid PID of the targeted thread
* @param[in] type specify if option is to be set or get
* @param[in] opt option to set or get
* @param[in] data data to set or pointer to buffer for reading options
* @param[in] data_len size of the given buffer
*
* @return the value from the received ACK message
*/
static inline int _get_set(kernel_pid_t pid, uint16_t type,
netopt_t opt, uint16_t context,
void *data, size_t data_len)
{
msg_t cmd;
msg_t ack;
gnrc_netapi_opt_t o;
/* set ńetapi's option struct */
o.opt = opt;
o.context = context;
o.data = data;
o.data_len = data_len;
/* set outgoing message's fields */
cmd.type = type;
cmd.content.ptr = (void *)&o;
/* trigger the netapi */
msg_send_receive(&cmd, &ack, pid);
assert(ack.type == GNRC_NETAPI_MSG_TYPE_ACK);
/* return the ACK message's value */
return (int)ack.content.value;
}
static inline int _snd_rcv(kernel_pid_t pid, uint16_t type, gnrc_pktsnip_t *pkt)
{
msg_t msg;
/* set the outgoing message's fields */
msg.type = type;
msg.content.ptr = (void *)pkt;
/* send message */
int ret = msg_try_send(&msg, pid);
if (ret < 1) {
DEBUG("gnrc_netapi: dropped message to %" PRIkernel_pid " (%s)\n", pid,
(ret == 0) ? "receiver queue is full" : "invalid receiver");
}
return ret;
}
#ifdef MODULE_GNRC_NETAPI_MBOX
static inline int _snd_rcv_mbox(mbox_t *mbox, uint16_t type, gnrc_pktsnip_t *pkt)
{
msg_t msg;
/* set the outgoing message's fields */
msg.type = type;
msg.content.ptr = (void *)pkt;
/* send message */
int ret = mbox_try_put(mbox, &msg);
if (ret < 1) {
DEBUG("gnrc_netapi: dropped message to %p (was full)\n", mbox);
}
return ret;
}
#endif
int gnrc_netapi_dispatch(gnrc_nettype_t type, uint32_t demux_ctx,
uint16_t cmd, gnrc_pktsnip_t *pkt)
{
int numof = gnrc_netreg_num(type, demux_ctx);
if (numof != 0) {
gnrc_netreg_entry_t *sendto = gnrc_netreg_lookup(type, demux_ctx);
gnrc_pktbuf_hold(pkt, numof - 1);
while (sendto) {
#if defined(MODULE_GNRC_NETAPI_MBOX) || defined(MODULE_GNRC_NETAPI_CALLBACKS)
int release = 0;
switch (sendto->type) {
case GNRC_NETREG_TYPE_DEFAULT:
if (_snd_rcv(sendto->target.pid, cmd, pkt) < 1) {
/* unable to dispatch packet */
release = 1;
}
break;
#ifdef MODULE_GNRC_NETAPI_MBOX
case GNRC_NETREG_TYPE_MBOX:
if (_snd_rcv_mbox(sendto->target.mbox, cmd, pkt) < 1) {
/* unable to dispatch packet */
release = 1;
}
break;
#endif
#ifdef MODULE_GNRC_NETAPI_CALLBACKS
case GNRC_NETREG_TYPE_CB:
sendto->target.cbd->cb(cmd, pkt, sendto->target.cbd->ctx);
break;
#endif
default:
/* unknown dispatch type */
release = 1;
break;
}
if (release) {
gnrc_pktbuf_release(pkt);
}
#else
if (_snd_rcv(sendto->target.pid, cmd, pkt) < 1) {
/* unable to dispatch packet */
gnrc_pktbuf_release(pkt);
}
#endif
sendto = gnrc_netreg_getnext(sendto);
}
}
return numof;
}
int gnrc_netapi_send(kernel_pid_t pid, gnrc_pktsnip_t *pkt)
{
return _snd_rcv(pid, GNRC_NETAPI_MSG_TYPE_SND, pkt);
}
int gnrc_netapi_receive(kernel_pid_t pid, gnrc_pktsnip_t *pkt)
{
return _snd_rcv(pid, GNRC_NETAPI_MSG_TYPE_RCV, pkt);
}
int gnrc_netapi_get(kernel_pid_t pid, netopt_t opt, uint16_t context,
void *data, size_t data_len)
{
return _get_set(pid, GNRC_NETAPI_MSG_TYPE_GET, opt, context,
data, data_len);
}
int gnrc_netapi_set(kernel_pid_t pid, netopt_t opt, uint16_t context,
void *data, size_t data_len)
{
return _get_set(pid, GNRC_NETAPI_MSG_TYPE_SET, opt, context,
data, data_len);
}
|