source: mainline/uspace/srv/net/ethip/ethip_nic.c@ eb13ef8

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since eb13ef8 was eb13ef8, checked in by Jiří Zárevúcky <zarevucky.jiri@…>, 6 years ago

Change IPC_GET_* and IPC_SET_* to accept pointer instead of lvalue
  • Property mode set to 100644
File size: 11.4 KB
Line 
1/*
2 * Copyright (c) 2012 Jiri Svoboda
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup ethip
30 * @{
31 */
32/**
33 * @file
34 * @brief
35 */
36
37#include <adt/list.h>
38#include <async.h>
39#include <stdbool.h>
40#include <errno.h>
41#include <str_error.h>
42#include <fibril_synch.h>
43#include <inet/iplink_srv.h>
44#include <io/log.h>
45#include <loc.h>
46#include <nic_iface.h>
47#include <stdlib.h>
48#include <mem.h>
49#include "ethip.h"
50#include "ethip_nic.h"
51#include "pdu.h"
52
53static errno_t ethip_nic_open(service_id_t sid);
54static void ethip_nic_cb_conn(ipc_call_t *icall, void *arg);
55
56static LIST_INITIALIZE(ethip_nic_list);
57static FIBRIL_MUTEX_INITIALIZE(ethip_discovery_lock);
58
59static errno_t ethip_nic_check_new(void)
60{
61 bool already_known;
62 category_id_t iplink_cat;
63 service_id_t *svcs;
64 size_t count, i;
65 errno_t rc;
66
67 fibril_mutex_lock(&ethip_discovery_lock);
68
69 rc = loc_category_get_id("nic", &iplink_cat, IPC_FLAG_BLOCKING);
70 if (rc != EOK) {
71 log_msg(LOG_DEFAULT, LVL_ERROR, "Failed resolving category 'nic'.");
72 fibril_mutex_unlock(&ethip_discovery_lock);
73 return ENOENT;
74 }
75
76 rc = loc_category_get_svcs(iplink_cat, &svcs, &count);
77 if (rc != EOK) {
78 log_msg(LOG_DEFAULT, LVL_ERROR, "Failed getting list of IP links.");
79 fibril_mutex_unlock(&ethip_discovery_lock);
80 return EIO;
81 }
82
83 for (i = 0; i < count; i++) {
84 already_known = false;
85
86 list_foreach(ethip_nic_list, link, ethip_nic_t, nic) {
87 if (nic->svc_id == svcs[i]) {
88 already_known = true;
89 break;
90 }
91 }
92
93 if (!already_known) {
94 log_msg(LOG_DEFAULT, LVL_DEBUG, "Found NIC '%lu'",
95 (unsigned long) svcs[i]);
96 rc = ethip_nic_open(svcs[i]);
97 if (rc != EOK)
98 log_msg(LOG_DEFAULT, LVL_ERROR, "Could not open NIC.");
99 }
100 }
101
102 fibril_mutex_unlock(&ethip_discovery_lock);
103 return EOK;
104}
105
106static ethip_nic_t *ethip_nic_new(void)
107{
108 ethip_nic_t *nic = calloc(1, sizeof(ethip_nic_t));
109 if (nic == NULL) {
110 log_msg(LOG_DEFAULT, LVL_ERROR, "Failed allocating NIC structure. "
111 "Out of memory.");
112 return NULL;
113 }
114
115 link_initialize(&nic->link);
116 list_initialize(&nic->addr_list);
117
118 return nic;
119}
120
121static ethip_link_addr_t *ethip_nic_addr_new(inet_addr_t *addr)
122{
123 ethip_link_addr_t *laddr = calloc(1, sizeof(ethip_link_addr_t));
124 if (laddr == NULL) {
125 log_msg(LOG_DEFAULT, LVL_ERROR, "Failed allocating NIC address structure. "
126 "Out of memory.");
127 return NULL;
128 }
129
130 link_initialize(&laddr->link);
131 laddr->addr = *addr;
132
133 return laddr;
134}
135
136static void ethip_nic_delete(ethip_nic_t *nic)
137{
138 if (nic->svc_name != NULL)
139 free(nic->svc_name);
140
141 free(nic);
142}
143
144static void ethip_link_addr_delete(ethip_link_addr_t *laddr)
145{
146 free(laddr);
147}
148
149static errno_t ethip_nic_open(service_id_t sid)
150{
151 bool in_list = false;
152 nic_address_t nic_address;
153
154 log_msg(LOG_DEFAULT, LVL_DEBUG, "ethip_nic_open()");
155 ethip_nic_t *nic = ethip_nic_new();
156 if (nic == NULL)
157 return ENOMEM;
158
159 errno_t rc = loc_service_get_name(sid, &nic->svc_name);
160 if (rc != EOK) {
161 log_msg(LOG_DEFAULT, LVL_ERROR, "Failed getting service name.");
162 goto error;
163 }
164
165 nic->sess = loc_service_connect(sid, INTERFACE_DDF, 0);
166 if (nic->sess == NULL) {
167 log_msg(LOG_DEFAULT, LVL_ERROR, "Failed connecting '%s'", nic->svc_name);
168 goto error;
169 }
170
171 nic->svc_id = sid;
172
173 rc = nic_callback_create(nic->sess, ethip_nic_cb_conn, nic);
174 if (rc != EOK) {
175 log_msg(LOG_DEFAULT, LVL_ERROR, "Failed creating callback connection "
176 "from '%s'", nic->svc_name);
177 goto error;
178 }
179
180 log_msg(LOG_DEFAULT, LVL_DEBUG, "Opened NIC '%s'", nic->svc_name);
181 list_append(&nic->link, &ethip_nic_list);
182 in_list = true;
183
184 rc = ethip_iplink_init(nic);
185 if (rc != EOK)
186 goto error;
187
188 rc = nic_get_address(nic->sess, &nic_address);
189 if (rc != EOK) {
190 log_msg(LOG_DEFAULT, LVL_ERROR, "Error getting MAC address of NIC '%s'.",
191 nic->svc_name);
192 goto error;
193 }
194
195 addr48(nic_address.address, nic->mac_addr);
196
197 rc = nic_set_state(nic->sess, NIC_STATE_ACTIVE);
198 if (rc != EOK) {
199 log_msg(LOG_DEFAULT, LVL_ERROR, "Error activating NIC '%s'.",
200 nic->svc_name);
201 goto error;
202 }
203
204 rc = nic_broadcast_set_mode(nic->sess, NIC_BROADCAST_ACCEPTED);
205 if (rc != EOK) {
206 log_msg(LOG_DEFAULT, LVL_ERROR, "Error enabling "
207 "reception of broadcast frames on '%s'.", nic->svc_name);
208 goto error;
209 }
210
211 log_msg(LOG_DEFAULT, LVL_DEBUG, "Initialized IP link service,");
212
213 return EOK;
214
215error:
216 if (in_list)
217 list_remove(&nic->link);
218
219 if (nic->sess != NULL)
220 async_hangup(nic->sess);
221
222 ethip_nic_delete(nic);
223 return rc;
224}
225
226static void ethip_nic_cat_change_cb(void *arg)
227{
228 (void) ethip_nic_check_new();
229}
230
231static void ethip_nic_addr_changed(ethip_nic_t *nic, ipc_call_t *call)
232{
233 uint8_t *addr;
234 size_t size;
235 errno_t rc;
236
237 rc = async_data_write_accept((void **) &addr, false, 0, 0, 0, &size);
238 if (rc != EOK) {
239 log_msg(LOG_DEFAULT, LVL_DEBUG, "data_write_accept() failed");
240 return;
241 }
242
243 log_msg(LOG_DEFAULT, LVL_DEBUG, "ethip_nic_addr_changed(): "
244 "new addr=%02x:%02x:%02x:%02x:%02x:%02x",
245 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
246
247 memcpy(&nic->mac_addr, addr, sizeof(nic->mac_addr));
248
249 rc = iplink_ev_change_addr(&nic->iplink, &nic->mac_addr);
250 if (rc != EOK) {
251 log_msg(LOG_DEFAULT, LVL_DEBUG, "iplink_ev_change_addr() failed");
252 return;
253 }
254
255 free(addr);
256 async_answer_0(call, EOK);
257}
258
259static void ethip_nic_received(ethip_nic_t *nic, ipc_call_t *call)
260{
261 errno_t rc;
262 void *data;
263 size_t size;
264
265 log_msg(LOG_DEFAULT, LVL_DEBUG, "ethip_nic_received() nic=%p", nic);
266
267 rc = async_data_write_accept(&data, false, 0, 0, 0, &size);
268 if (rc != EOK) {
269 log_msg(LOG_DEFAULT, LVL_DEBUG, "data_write_accept() failed");
270 return;
271 }
272
273 log_msg(LOG_DEFAULT, LVL_DEBUG, "Ethernet PDU contents (%zu bytes)",
274 size);
275
276 log_msg(LOG_DEFAULT, LVL_DEBUG, "call ethip_received");
277 rc = ethip_received(&nic->iplink, data, size);
278 log_msg(LOG_DEFAULT, LVL_DEBUG, "free data");
279 free(data);
280
281 log_msg(LOG_DEFAULT, LVL_DEBUG, "ethip_nic_received() done, rc=%s", str_error_name(rc));
282 async_answer_0(call, rc);
283}
284
285static void ethip_nic_device_state(ethip_nic_t *nic, ipc_call_t *call)
286{
287 log_msg(LOG_DEFAULT, LVL_DEBUG, "ethip_nic_device_state()");
288 async_answer_0(call, ENOTSUP);
289}
290
291static void ethip_nic_cb_conn(ipc_call_t *icall, void *arg)
292{
293 ethip_nic_t *nic = (ethip_nic_t *)arg;
294
295 log_msg(LOG_DEFAULT, LVL_DEBUG, "ethnip_nic_cb_conn()");
296
297 while (true) {
298 ipc_call_t call;
299 async_get_call(&call);
300
301 if (!IPC_GET_IMETHOD(&call)) {
302 async_answer_0(&call, EOK);
303 return;
304 }
305
306 switch (IPC_GET_IMETHOD(&call)) {
307 case NIC_EV_ADDR_CHANGED:
308 ethip_nic_addr_changed(nic, &call);
309 break;
310 case NIC_EV_RECEIVED:
311 ethip_nic_received(nic, &call);
312 break;
313 case NIC_EV_DEVICE_STATE:
314 ethip_nic_device_state(nic, &call);
315 break;
316 default:
317 log_msg(LOG_DEFAULT, LVL_DEBUG, "unknown IPC method: %" PRIun, IPC_GET_IMETHOD(&call));
318 async_answer_0(&call, ENOTSUP);
319 }
320 }
321}
322
323errno_t ethip_nic_discovery_start(void)
324{
325 errno_t rc = loc_register_cat_change_cb(ethip_nic_cat_change_cb, NULL);
326 if (rc != EOK) {
327 log_msg(LOG_DEFAULT, LVL_ERROR, "Failed registering callback for NIC "
328 "discovery: %s.", str_error(rc));
329 return rc;
330 }
331
332 return ethip_nic_check_new();
333}
334
335ethip_nic_t *ethip_nic_find_by_iplink_sid(service_id_t iplink_sid)
336{
337 log_msg(LOG_DEFAULT, LVL_DEBUG, "ethip_nic_find_by_iplink_sid(%u)",
338 (unsigned) iplink_sid);
339
340 list_foreach(ethip_nic_list, link, ethip_nic_t, nic) {
341 log_msg(LOG_DEFAULT, LVL_DEBUG, "ethip_nic_find_by_iplink_sid - element");
342 if (nic->iplink_sid == iplink_sid) {
343 log_msg(LOG_DEFAULT, LVL_DEBUG, "ethip_nic_find_by_iplink_sid - found %p", nic);
344 return nic;
345 }
346 }
347
348 log_msg(LOG_DEFAULT, LVL_DEBUG, "ethip_nic_find_by_iplink_sid - not found");
349 return NULL;
350}
351
352errno_t ethip_nic_send(ethip_nic_t *nic, void *data, size_t size)
353{
354 errno_t rc;
355 log_msg(LOG_DEFAULT, LVL_DEBUG, "ethip_nic_send(size=%zu)", size);
356 rc = nic_send_frame(nic->sess, data, size);
357 log_msg(LOG_DEFAULT, LVL_DEBUG, "nic_send_frame -> %s", str_error_name(rc));
358 return rc;
359}
360
361/** Setup accepted multicast addresses
362 *
363 * Currently the set of accepted multicast addresses is
364 * determined only based on IPv6 addresses.
365 *
366 */
367static errno_t ethip_nic_setup_multicast(ethip_nic_t *nic)
368{
369 log_msg(LOG_DEFAULT, LVL_DEBUG, "ethip_nic_setup_multicast()");
370
371 /* Count the number of multicast addresses */
372
373 size_t count = 0;
374
375 list_foreach(nic->addr_list, link, ethip_link_addr_t, laddr) {
376 ip_ver_t ver = inet_addr_get(&laddr->addr, NULL, NULL);
377 if (ver == ip_v6)
378 count++;
379 }
380
381 if (count == 0)
382 return nic_multicast_set_mode(nic->sess, NIC_MULTICAST_BLOCKED,
383 NULL, 0);
384
385 nic_address_t *mac_list = calloc(count, sizeof(nic_address_t));
386 if (mac_list == NULL)
387 return ENOMEM;
388
389 /* Create the multicast MAC list */
390
391 size_t i = 0;
392
393 list_foreach(nic->addr_list, link, ethip_link_addr_t, laddr) {
394 addr128_t v6;
395 ip_ver_t ver = inet_addr_get(&laddr->addr, NULL, &v6);
396 if (ver != ip_v6)
397 continue;
398
399 assert(i < count);
400
401 addr48_t mac;
402 addr48_solicited_node(v6, mac);
403
404 /* Avoid duplicate addresses in the list */
405
406 bool found = false;
407
408 for (size_t j = 0; j < i; j++) {
409 if (addr48_compare(mac_list[j].address, mac)) {
410 found = true;
411 break;
412 }
413 }
414
415 if (!found) {
416 addr48(mac, mac_list[i].address);
417 i++;
418 } else
419 count--;
420 }
421
422 /* Setup the multicast MAC list */
423
424 errno_t rc = nic_multicast_set_mode(nic->sess, NIC_MULTICAST_LIST,
425 mac_list, count);
426
427 free(mac_list);
428 return rc;
429}
430
431errno_t ethip_nic_addr_add(ethip_nic_t *nic, inet_addr_t *addr)
432{
433 log_msg(LOG_DEFAULT, LVL_DEBUG, "ethip_nic_addr_add()");
434
435 ethip_link_addr_t *laddr = ethip_nic_addr_new(addr);
436 if (laddr == NULL)
437 return ENOMEM;
438
439 list_append(&laddr->link, &nic->addr_list);
440
441 return ethip_nic_setup_multicast(nic);
442}
443
444errno_t ethip_nic_addr_remove(ethip_nic_t *nic, inet_addr_t *addr)
445{
446 log_msg(LOG_DEFAULT, LVL_DEBUG, "ethip_nic_addr_remove()");
447
448 ethip_link_addr_t *laddr = ethip_nic_addr_find(nic, addr);
449 if (laddr == NULL)
450 return ENOENT;
451
452 list_remove(&laddr->link);
453 ethip_link_addr_delete(laddr);
454
455 return ethip_nic_setup_multicast(nic);
456}
457
458ethip_link_addr_t *ethip_nic_addr_find(ethip_nic_t *nic,
459 inet_addr_t *addr)
460{
461 log_msg(LOG_DEFAULT, LVL_DEBUG, "ethip_nic_addr_find()");
462
463 list_foreach(nic->addr_list, link, ethip_link_addr_t, laddr) {
464 if (inet_addr_compare(addr, &laddr->addr))
465 return laddr;
466 }
467
468 return NULL;
469}
470
471/** @}
472 */
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