a752c7ab
 elopes
add first test an...
|
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
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
|
/*
* Copyright (C) 2015 Freie Universitรคt 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.
*/
/**
* @{
*
* @file
* @author Martine Lenders <mlenders@inf.fu-berlin.de>
*/
#include <assert.h>
#include <sys/uio.h>
#include <inttypes.h>
#include "lwip/err.h"
#include "lwip/ethip6.h"
#include "lwip/netif.h"
#include "lwip/netif/netdev.h"
#include "lwip/opt.h"
#include "lwip/pbuf.h"
#include "netif/etharp.h"
#include "netif/lowpan6.h"
#include "net/eui64.h"
#include "net/ieee802154.h"
#include "net/ipv6/addr.h"
#include "net/netdev.h"
#include "net/netopt.h"
#include "utlist.h"
#include "thread.h"
#define ENABLE_DEBUG (0)
#include "debug.h"
#define LWIP_NETDEV_NAME "lwip_netdev_mux"
#define LWIP_NETDEV_PRIO (THREAD_PRIORITY_MAIN - 4)
#define LWIP_NETDEV_STACKSIZE (THREAD_STACKSIZE_DEFAULT)
#define LWIP_NETDEV_QUEUE_LEN (8)
#define LWIP_NETDEV_MSG_TYPE_EVENT 0x1235
#define ETHERNET_IFNAME1 'E'
#define ETHERNET_IFNAME2 'T'
static kernel_pid_t _pid = KERNEL_PID_UNDEF;
static char _stack[LWIP_NETDEV_STACKSIZE];
static msg_t _queue[LWIP_NETDEV_QUEUE_LEN];
static char _tmp_buf[LWIP_NETDEV_BUFLEN];
#ifdef MODULE_NETDEV_ETH
static err_t _eth_link_output(struct netif *netif, struct pbuf *p);
#endif
#ifdef MODULE_LWIP_SIXLOWPAN
static err_t _ieee802154_link_output(struct netif *netif, struct pbuf *p);
#endif
static void _event_cb(netdev_t *dev, netdev_event_t event);
static void *_event_loop(void *arg);
err_t lwip_netdev_init(struct netif *netif)
{
LWIP_ASSERT("netif != NULL", (netif != NULL));
LWIP_ASSERT("netif->state != NULL", (netif->state != NULL));
netdev_t *netdev;
uint16_t dev_type;
err_t res = ERR_OK;
/* start multiplexing thread (only one needed) */
if (_pid <= KERNEL_PID_UNDEF) {
_pid = thread_create(_stack, LWIP_NETDEV_STACKSIZE, LWIP_NETDEV_PRIO,
THREAD_CREATE_STACKTEST, _event_loop, netif,
LWIP_NETDEV_NAME);
if (_pid <= 0) {
return ERR_IF;
}
}
/* initialize netdev and netif */
netdev = (netdev_t *)netif->state;
netdev->driver->init(netdev);
netdev->event_callback = _event_cb;
if (netdev->driver->get(netdev, NETOPT_DEVICE_TYPE, &dev_type,
sizeof(dev_type)) < 0) {
return ERR_IF;
}
#if LWIP_NETIF_HOSTNAME
netif->hostname = "riot";
#endif /* LWIP_NETIF_HOSTNAME */
/* XXX: for now assume its Ethernet, since netdev is implemented only by ethernet drivers */
switch (dev_type) {
#ifdef MODULE_NETDEV_ETH
case NETDEV_TYPE_ETHERNET:
netif->name[0] = ETHERNET_IFNAME1;
netif->name[1] = ETHERNET_IFNAME2;
netif->hwaddr_len = (u8_t)netdev->driver->get(netdev, NETOPT_ADDRESS, netif->hwaddr,
sizeof(netif->hwaddr));
if (netif->hwaddr_len > sizeof(netif->hwaddr)) {
return ERR_IF;
}
/* TODO: get from driver (currently not in netdev_eth) */
netif->mtu = ETHERNET_DATA_LEN;
netif->linkoutput = _eth_link_output;
#if LWIP_IPV4
netif->output = etharp_output;
#endif
#if LWIP_IPV6
netif->output_ip6 = ethip6_output;
netif_create_ip6_linklocal_address(netif, 1); /* 1: hwaddr is 48-bit MAC addr */
#endif
netif->flags |= NETIF_FLAG_BROADCAST;
netif->flags |= NETIF_FLAG_ETHARP;
netif->flags |= NETIF_FLAG_ETHERNET;
break;
#endif
#ifdef MODULE_LWIP_SIXLOWPAN
case NETDEV_TYPE_IEEE802154:
{
u16_t val;
ipv6_addr_t *addr;
if (netdev->driver->get(netdev, NETOPT_NID, &val,
sizeof(val)) < 0) {
return ERR_IF;
}
lowpan6_set_pan_id(val);
netif->hwaddr_len = (u8_t)netdev->driver->get(netdev, NETOPT_ADDRESS_LONG,
netif->hwaddr, sizeof(netif->hwaddr));
if (netif->hwaddr_len > sizeof(netif->hwaddr)) {
return ERR_IF;
}
netif->linkoutput = _ieee802154_link_output;
res = lowpan6_if_init(netif);
if (res != ERR_OK) {
return res;
}
/* assure usage of long address as source address */
val = netif->hwaddr_len;
if (netdev->driver->set(netdev, NETOPT_SRC_LEN, &val, sizeof(val)) < 0) {
return ERR_IF;
}
/* netif_create_ip6_linklocal_address() does weird byte-swapping
* with full IIDs, so let's do it ourselves */
addr = (ipv6_addr_t *)&(netif->ip6_addr[0]);
if (netdev->driver->get(netdev, NETOPT_IPV6_IID, &addr->u8[8], sizeof(eui64_t)) < 0) {
return ERR_IF;
}
ipv6_addr_set_link_local_prefix(addr);
/* Set address state. */
#if LWIP_IPV6_DUP_DETECT_ATTEMPTS
/* Will perform duplicate address detection (DAD). */
netif->ip6_addr_state[0] = IP6_ADDR_TENTATIVE;
#else
/* Consider address valid. */
netif->ip6_addr_state[0] = IP6_ADDR_PREFERRED;
#endif /* LWIP_IPV6_AUTOCONFIG */
break;
}
#endif
default:
return ERR_IF; /* device type not supported yet */
}
netif->flags |= NETIF_FLAG_UP;
netif->flags |= NETIF_FLAG_LINK_UP;
netif->flags |= NETIF_FLAG_IGMP;
netif->flags |= NETIF_FLAG_MLD6;
netdev->context = netif;
#if LWIP_IPV6_AUTOCONFIG
netif->ip6_autoconfig_enabled = 1;
#endif
return res;
}
#ifdef MODULE_NETDEV_ETH
static err_t _eth_link_output(struct netif *netif, struct pbuf *p)
{
netdev_t *netdev = (netdev_t *)netif->state;
struct pbuf *q;
unsigned int count = 0;
#if ETH_PAD_SIZE
pbuf_header(p, -ETH_PAD_SIZE); /* drop the padding word */
#endif
LL_COUNT(p, q, count);
struct iovec pkt[count];
for (q = p, count = 0; q != NULL; q = q->next, count++) {
pkt[count].iov_base = q->payload;
pkt[count].iov_len = (size_t)q->len;
}
#if ETH_PAD_SIZE
pbuf_header(p, ETH_PAD_SIZE); /* reclaim the padding word */
#endif
return (netdev->driver->send(netdev, pkt, count) > 0) ? ERR_OK : ERR_BUF;
}
#endif
#ifdef MODULE_LWIP_SIXLOWPAN
static err_t _ieee802154_link_output(struct netif *netif, struct pbuf *p)
{
LWIP_ASSERT("p->next == NULL", p->next == NULL);
netdev_t *netdev = (netdev_t *)netif->state;
struct iovec pkt = {
.iov_base = p->payload,
.iov_len = (p->len - IEEE802154_FCS_LEN), /* FCS is written by driver */
};
return (netdev->driver->send(netdev, &pkt, 1) > 0) ? ERR_OK : ERR_BUF;
}
#endif
static struct pbuf *_get_recv_pkt(netdev_t *dev)
{
int len = dev->driver->recv(dev, _tmp_buf, sizeof(_tmp_buf), NULL);
if (len < 0) {
DEBUG("lwip_netdev: an error occurred while reading the packet\n");
return NULL;
}
assert(((unsigned)len) <= UINT16_MAX);
struct pbuf *p = pbuf_alloc(PBUF_RAW, (u16_t)len, PBUF_POOL);
if (p == NULL) {
DEBUG("lwip_netdev: can not allocate in pbuf\n");
return NULL;
}
pbuf_take(p, _tmp_buf, len);
return p;
}
static void _event_cb(netdev_t *dev, netdev_event_t event)
{
if (event == NETDEV_EVENT_ISR) {
assert(_pid != KERNEL_PID_UNDEF);
msg_t msg;
msg.type = LWIP_NETDEV_MSG_TYPE_EVENT;
msg.content.ptr = dev;
if (msg_send(&msg, _pid) <= 0) {
DEBUG("lwip_netdev: possibly lost interrupt.\n");
}
}
else {
struct netif *netif = dev->context;
switch (event) {
case NETDEV_EVENT_RX_COMPLETE: {
struct pbuf *p = _get_recv_pkt(dev);
if (p == NULL) {
DEBUG("lwip_netdev: error receiving packet\n");
return;
}
if (netif->input(p, netif) != ERR_OK) {
DEBUG("lwip_netdev: error inputing packet\n");
return;
}
}
break;
default:
break;
}
}
}
static void *_event_loop(void *arg)
{
(void)arg;
msg_init_queue(_queue, LWIP_NETDEV_QUEUE_LEN);
while (1) {
msg_t msg;
msg_receive(&msg);
if (msg.type == LWIP_NETDEV_MSG_TYPE_EVENT) {
netdev_t *dev = msg.content.ptr;
dev->driver->isr(dev);
}
}
return NULL;
}
/** @} */
|