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
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
|
/*
* Copyright (C) 2015 Freie Universitรคt Berlin
* 2015 Kaspar Schleiser <kaspar@schleiser.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.
*/
/**
* @{
* @ingroup net
* @file
* @brief Glue for netdev2 devices to netapi
*
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
* @author Kaspar Schleiser <kaspar@schleiser.de>
* @}
*/
#include <errno.h>
#include "msg.h"
#include "thread.h"
#include "net/gnrc.h"
#include "net/gnrc/nettype.h"
#include "net/netdev2.h"
#include "net/gnrc/netdev2.h"
#include "net/ethernet/hdr.h"
#define ENABLE_DEBUG (0)
#include "debug.h"
#if defined(MODULE_OD) && ENABLE_DEBUG
#include "od.h"
#endif
#define NETDEV2_NETAPI_MSG_QUEUE_SIZE 8
static void _pass_on_packet(gnrc_pktsnip_t *pkt);
/**
* @brief Function called by the device driver on device events
*
* @param[in] event type of event
*/
static void _event_cb(netdev2_t *dev, netdev2_event_t event)
{
gnrc_netdev2_t *gnrc_netdev2 = (gnrc_netdev2_t*) dev->context;
if (event == NETDEV2_EVENT_ISR) {
msg_t msg;
msg.type = NETDEV2_MSG_TYPE_EVENT;
msg.content.ptr = gnrc_netdev2;
if (msg_send(&msg, gnrc_netdev2->pid) <= 0) {
puts("gnrc_netdev2: possibly lost interrupt.");
}
}
else {
DEBUG("gnrc_netdev2: event triggered -> %i\n", event);
switch(event) {
case NETDEV2_EVENT_RX_COMPLETE:
{
gnrc_pktsnip_t *pkt = gnrc_netdev2->recv(gnrc_netdev2);
if (pkt) {
_pass_on_packet(pkt);
}
break;
}
#ifdef MODULE_NETSTATS_L2
case NETDEV2_EVENT_TX_MEDIUM_BUSY:
dev->stats.tx_failed++;
break;
case NETDEV2_EVENT_TX_COMPLETE:
dev->stats.tx_success++;
break;
#endif
default:
DEBUG("gnrc_netdev2: warning: unhandled event %u.\n", event);
}
}
}
static void _pass_on_packet(gnrc_pktsnip_t *pkt)
{
/* throw away packet if no one is interested */
if (!gnrc_netapi_dispatch_receive(pkt->type, GNRC_NETREG_DEMUX_CTX_ALL, pkt)) {
DEBUG("gnrc_netdev2: unable to forward packet of type %i\n", pkt->type);
gnrc_pktbuf_release(pkt);
return;
}
}
/**
* @brief Startup code and event loop of the gnrc_netdev2 layer
*
* @param[in] args expects a pointer to the underlying netdev device
*
* @return never returns
*/
static void *_gnrc_netdev2_thread(void *args)
{
DEBUG("gnrc_netdev2: starting thread\n");
gnrc_netdev2_t *gnrc_netdev2 = (gnrc_netdev2_t*) args;
netdev2_t *dev = gnrc_netdev2->dev;
gnrc_netdev2->pid = thread_getpid();
gnrc_netapi_opt_t *opt;
int res;
msg_t msg, reply, msg_queue[NETDEV2_NETAPI_MSG_QUEUE_SIZE];
/* setup the MAC layers message queue */
msg_init_queue(msg_queue, NETDEV2_NETAPI_MSG_QUEUE_SIZE);
/* register the event callback with the device driver */
dev->event_callback = _event_cb;
dev->context = (void*) gnrc_netdev2;
/* register the device to the network stack*/
gnrc_netif_add(thread_getpid());
/* initialize low-level driver */
dev->driver->init(dev);
/* start the event loop */
while (1) {
DEBUG("gnrc_netdev2: waiting for incoming messages\n");
msg_receive(&msg);
/* dispatch NETDEV and NETAPI messages */
switch (msg.type) {
case NETDEV2_MSG_TYPE_EVENT:
DEBUG("gnrc_netdev2: GNRC_NETDEV_MSG_TYPE_EVENT received\n");
dev->driver->isr(dev);
break;
case GNRC_NETAPI_MSG_TYPE_SND:
DEBUG("gnrc_netdev2: GNRC_NETAPI_MSG_TYPE_SND received\n");
gnrc_pktsnip_t *pkt = msg.content.ptr;
gnrc_netdev2->send(gnrc_netdev2, pkt);
break;
case GNRC_NETAPI_MSG_TYPE_SET:
/* read incoming options */
opt = msg.content.ptr;
DEBUG("gnrc_netdev2: GNRC_NETAPI_MSG_TYPE_SET received. opt=%s\n",
netopt2str(opt->opt));
/* set option for device driver */
res = dev->driver->set(dev, opt->opt, opt->data, opt->data_len);
DEBUG("gnrc_netdev2: response of netdev->set: %i\n", res);
/* send reply to calling thread */
reply.type = GNRC_NETAPI_MSG_TYPE_ACK;
reply.content.value = (uint32_t)res;
msg_reply(&msg, &reply);
break;
case GNRC_NETAPI_MSG_TYPE_GET:
/* read incoming options */
opt = msg.content.ptr;
DEBUG("gnrc_netdev2: GNRC_NETAPI_MSG_TYPE_GET received. opt=%s\n",
netopt2str(opt->opt));
/* get option from device driver */
res = dev->driver->get(dev, opt->opt, opt->data, opt->data_len);
DEBUG("gnrc_netdev2: response of netdev->get: %i\n", res);
/* send reply to calling thread */
reply.type = GNRC_NETAPI_MSG_TYPE_ACK;
reply.content.value = (uint32_t)res;
msg_reply(&msg, &reply);
break;
default:
DEBUG("gnrc_netdev2: Unknown command %" PRIu16 "\n", msg.type);
break;
}
}
/* never reached */
return NULL;
}
kernel_pid_t gnrc_netdev2_init(char *stack, int stacksize, char priority,
const char *name, gnrc_netdev2_t *gnrc_netdev2)
{
kernel_pid_t res;
/* check if given netdev device is defined and the driver is set */
if (gnrc_netdev2 == NULL || gnrc_netdev2->dev == NULL) {
return -ENODEV;
}
/* create new gnrc_netdev2 thread */
res = thread_create(stack, stacksize, priority, THREAD_CREATE_STACKTEST,
_gnrc_netdev2_thread, (void *)gnrc_netdev2, name);
if (res <= 0) {
return -EINVAL;
}
return res;
}
|