1 // SPDX-License-Identifier: GPL-2.0
2 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
3
4 #include <linux/delay.h>
5 #include <linux/etherdevice.h>
6 #include <linux/hardirq.h>
7 #include <linux/netdevice.h>
8 #include <linux/if_ether.h>
9 #include <linux/if_arp.h>
10 #include <linux/kthread.h>
11 #include <linux/kfifo.h>
12 #include <net/cfg80211.h>
13
14 #include "mesh.h"
15 #include "decl.h"
16 #include "cmd.h"
17
18
19 static int lbs_add_mesh(struct lbs_private *priv);
20
21 /***************************************************************************
22 * Mesh command handling
23 */
24
lbs_mesh_access(struct lbs_private * priv,uint16_t cmd_action,struct cmd_ds_mesh_access * cmd)25 static int lbs_mesh_access(struct lbs_private *priv, uint16_t cmd_action,
26 struct cmd_ds_mesh_access *cmd)
27 {
28 int ret;
29
30 cmd->hdr.command = cpu_to_le16(CMD_MESH_ACCESS);
31 cmd->hdr.size = cpu_to_le16(sizeof(*cmd));
32 cmd->hdr.result = 0;
33
34 cmd->action = cpu_to_le16(cmd_action);
35
36 ret = lbs_cmd_with_response(priv, CMD_MESH_ACCESS, cmd);
37
38 return ret;
39 }
40
__lbs_mesh_config_send(struct lbs_private * priv,struct cmd_ds_mesh_config * cmd,uint16_t action,uint16_t type)41 static int __lbs_mesh_config_send(struct lbs_private *priv,
42 struct cmd_ds_mesh_config *cmd,
43 uint16_t action, uint16_t type)
44 {
45 int ret;
46 u16 command = CMD_MESH_CONFIG_OLD;
47
48 /*
49 * Command id is 0xac for v10 FW along with mesh interface
50 * id in bits 14-13-12.
51 */
52 if (priv->mesh_tlv == TLV_TYPE_MESH_ID)
53 command = CMD_MESH_CONFIG |
54 (MESH_IFACE_ID << MESH_IFACE_BIT_OFFSET);
55
56 cmd->hdr.command = cpu_to_le16(command);
57 cmd->hdr.size = cpu_to_le16(sizeof(struct cmd_ds_mesh_config));
58 cmd->hdr.result = 0;
59
60 cmd->type = cpu_to_le16(type);
61 cmd->action = cpu_to_le16(action);
62
63 ret = lbs_cmd_with_response(priv, command, cmd);
64
65 return ret;
66 }
67
lbs_mesh_config_send(struct lbs_private * priv,struct cmd_ds_mesh_config * cmd,uint16_t action,uint16_t type)68 static int lbs_mesh_config_send(struct lbs_private *priv,
69 struct cmd_ds_mesh_config *cmd,
70 uint16_t action, uint16_t type)
71 {
72 int ret;
73
74 if (!(priv->fwcapinfo & FW_CAPINFO_PERSISTENT_CONFIG))
75 return -EOPNOTSUPP;
76
77 ret = __lbs_mesh_config_send(priv, cmd, action, type);
78 return ret;
79 }
80
81 /* This function is the CMD_MESH_CONFIG legacy function. It only handles the
82 * START and STOP actions. The extended actions supported by CMD_MESH_CONFIG
83 * are all handled by preparing a struct cmd_ds_mesh_config and passing it to
84 * lbs_mesh_config_send.
85 */
lbs_mesh_config(struct lbs_private * priv,uint16_t action,uint16_t chan)86 static int lbs_mesh_config(struct lbs_private *priv, uint16_t action,
87 uint16_t chan)
88 {
89 struct wireless_dev *mesh_wdev;
90 struct cmd_ds_mesh_config cmd;
91 struct mrvl_meshie *ie;
92
93 memset(&cmd, 0, sizeof(cmd));
94 cmd.channel = cpu_to_le16(chan);
95 ie = (struct mrvl_meshie *)cmd.data;
96
97 switch (action) {
98 case CMD_ACT_MESH_CONFIG_START:
99 ie->id = WLAN_EID_VENDOR_SPECIFIC;
100 ie->val.oui[0] = 0x00;
101 ie->val.oui[1] = 0x50;
102 ie->val.oui[2] = 0x43;
103 ie->val.type = MARVELL_MESH_IE_TYPE;
104 ie->val.subtype = MARVELL_MESH_IE_SUBTYPE;
105 ie->val.version = MARVELL_MESH_IE_VERSION;
106 ie->val.active_protocol_id = MARVELL_MESH_PROTO_ID_HWMP;
107 ie->val.active_metric_id = MARVELL_MESH_METRIC_ID;
108 ie->val.mesh_capability = MARVELL_MESH_CAPABILITY;
109
110 if (priv->mesh_dev) {
111 mesh_wdev = priv->mesh_dev->ieee80211_ptr;
112 ie->val.mesh_id_len = mesh_wdev->u.mesh.id_up_len;
113 memcpy(ie->val.mesh_id, mesh_wdev->u.mesh.id,
114 mesh_wdev->u.mesh.id_up_len);
115 }
116
117 ie->len = sizeof(struct mrvl_meshie_val) -
118 IEEE80211_MAX_SSID_LEN + ie->val.mesh_id_len;
119
120 cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie_val));
121 break;
122 case CMD_ACT_MESH_CONFIG_STOP:
123 break;
124 default:
125 return -1;
126 }
127 lbs_deb_cmd("mesh config action %d type %x channel %d SSID %*pE\n",
128 action, priv->mesh_tlv, chan, ie->val.mesh_id_len,
129 ie->val.mesh_id);
130
131 return __lbs_mesh_config_send(priv, &cmd, action, priv->mesh_tlv);
132 }
133
lbs_mesh_set_channel(struct lbs_private * priv,u8 channel)134 int lbs_mesh_set_channel(struct lbs_private *priv, u8 channel)
135 {
136 priv->mesh_channel = channel;
137 return lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, channel);
138 }
139
lbs_mesh_get_channel(struct lbs_private * priv)140 static uint16_t lbs_mesh_get_channel(struct lbs_private *priv)
141 {
142 return priv->mesh_channel ?: 1;
143 }
144
145 /***************************************************************************
146 * Mesh sysfs support
147 */
148
149 /*
150 * Attributes exported through sysfs
151 */
152
153 /**
154 * anycast_mask_show - Get function for sysfs attribute anycast_mask
155 * @dev: the &struct device
156 * @attr: device attributes
157 * @buf: buffer where data will be returned
158 */
anycast_mask_show(struct device * dev,struct device_attribute * attr,char * buf)159 static ssize_t anycast_mask_show(struct device *dev,
160 struct device_attribute *attr, char *buf)
161 {
162 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
163 struct cmd_ds_mesh_access mesh_access;
164 int ret;
165
166 memset(&mesh_access, 0, sizeof(mesh_access));
167
168 ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_ANYCAST, &mesh_access);
169 if (ret)
170 return ret;
171
172 return sysfs_emit(buf, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
173 }
174
175 /**
176 * anycast_mask_store - Set function for sysfs attribute anycast_mask
177 * @dev: the &struct device
178 * @attr: device attributes
179 * @buf: buffer that contains new attribute value
180 * @count: size of buffer
181 */
anycast_mask_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)182 static ssize_t anycast_mask_store(struct device *dev,
183 struct device_attribute *attr,
184 const char *buf, size_t count)
185 {
186 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
187 struct cmd_ds_mesh_access mesh_access;
188 uint32_t datum;
189 int ret;
190
191 ret = kstrtouint(buf, 16, &datum);
192 if (ret)
193 return ret;
194
195 memset(&mesh_access, 0, sizeof(mesh_access));
196 mesh_access.data[0] = cpu_to_le32(datum);
197
198 ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_ANYCAST, &mesh_access);
199 if (ret)
200 return ret;
201
202 return strlen(buf);
203 }
204
205 /**
206 * prb_rsp_limit_show - Get function for sysfs attribute prb_rsp_limit
207 * @dev: the &struct device
208 * @attr: device attributes
209 * @buf: buffer where data will be returned
210 */
prb_rsp_limit_show(struct device * dev,struct device_attribute * attr,char * buf)211 static ssize_t prb_rsp_limit_show(struct device *dev,
212 struct device_attribute *attr, char *buf)
213 {
214 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
215 struct cmd_ds_mesh_access mesh_access;
216 int ret;
217 u32 retry_limit;
218
219 memset(&mesh_access, 0, sizeof(mesh_access));
220 mesh_access.data[0] = cpu_to_le32(CMD_ACT_GET);
221
222 ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_GET_PRB_RSP_LIMIT,
223 &mesh_access);
224 if (ret)
225 return ret;
226
227 retry_limit = le32_to_cpu(mesh_access.data[1]);
228 return sysfs_emit(buf, "%d\n", retry_limit);
229 }
230
231 /**
232 * prb_rsp_limit_store - Set function for sysfs attribute prb_rsp_limit
233 * @dev: the &struct device
234 * @attr: device attributes
235 * @buf: buffer that contains new attribute value
236 * @count: size of buffer
237 */
prb_rsp_limit_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)238 static ssize_t prb_rsp_limit_store(struct device *dev,
239 struct device_attribute *attr,
240 const char *buf, size_t count)
241 {
242 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
243 struct cmd_ds_mesh_access mesh_access;
244 int ret;
245 unsigned long retry_limit;
246
247 ret = kstrtoul(buf, 10, &retry_limit);
248 if (ret)
249 return ret;
250 if (retry_limit > 15)
251 return -ENOTSUPP;
252
253 memset(&mesh_access, 0, sizeof(mesh_access));
254 mesh_access.data[0] = cpu_to_le32(CMD_ACT_SET);
255 mesh_access.data[1] = cpu_to_le32(retry_limit);
256
257 ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_GET_PRB_RSP_LIMIT,
258 &mesh_access);
259 if (ret)
260 return ret;
261
262 return strlen(buf);
263 }
264
265 /**
266 * lbs_mesh_show - Get function for sysfs attribute mesh
267 * @dev: the &struct device
268 * @attr: device attributes
269 * @buf: buffer where data will be returned
270 */
lbs_mesh_show(struct device * dev,struct device_attribute * attr,char * buf)271 static ssize_t lbs_mesh_show(struct device *dev,
272 struct device_attribute *attr, char *buf)
273 {
274 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
275 return sysfs_emit(buf, "0x%X\n", !!priv->mesh_dev);
276 }
277
278 /**
279 * lbs_mesh_store - Set function for sysfs attribute mesh
280 * @dev: the &struct device
281 * @attr: device attributes
282 * @buf: buffer that contains new attribute value
283 * @count: size of buffer
284 */
lbs_mesh_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)285 static ssize_t lbs_mesh_store(struct device *dev,
286 struct device_attribute *attr,
287 const char *buf, size_t count)
288 {
289 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
290 int ret, enable;
291
292 ret = kstrtoint(buf, 16, &enable);
293 if (ret)
294 return ret;
295
296 enable = !!enable;
297 if (enable == !!priv->mesh_dev)
298 return count;
299
300 if (enable)
301 lbs_add_mesh(priv);
302 else
303 lbs_remove_mesh(priv);
304
305 return count;
306 }
307
308 /*
309 * lbs_mesh attribute to be exported per ethX interface
310 * through sysfs (/sys/class/net/ethX/lbs_mesh)
311 */
312 static DEVICE_ATTR_RW(lbs_mesh);
313
314 /*
315 * anycast_mask attribute to be exported per mshX interface
316 * through sysfs (/sys/class/net/mshX/anycast_mask)
317 */
318 static DEVICE_ATTR_RW(anycast_mask);
319
320 /*
321 * prb_rsp_limit attribute to be exported per mshX interface
322 * through sysfs (/sys/class/net/mshX/prb_rsp_limit)
323 */
324 static DEVICE_ATTR_RW(prb_rsp_limit);
325
326 static struct attribute *lbs_mesh_sysfs_entries[] = {
327 &dev_attr_anycast_mask.attr,
328 &dev_attr_prb_rsp_limit.attr,
329 NULL,
330 };
331
332 static const struct attribute_group lbs_mesh_attr_group = {
333 .attrs = lbs_mesh_sysfs_entries,
334 };
335
336
337 /***************************************************************************
338 * Persistent configuration support
339 */
340
mesh_get_default_parameters(struct device * dev,struct mrvl_mesh_defaults * defs)341 static int mesh_get_default_parameters(struct device *dev,
342 struct mrvl_mesh_defaults *defs)
343 {
344 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
345 struct cmd_ds_mesh_config cmd;
346 int ret;
347
348 memset(&cmd, 0, sizeof(struct cmd_ds_mesh_config));
349 ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_GET,
350 CMD_TYPE_MESH_GET_DEFAULTS);
351
352 if (ret)
353 return -EOPNOTSUPP;
354
355 memcpy(defs, &cmd.data[0], sizeof(struct mrvl_mesh_defaults));
356
357 return 0;
358 }
359
360 /**
361 * bootflag_show - Get function for sysfs attribute bootflag
362 * @dev: the &struct device
363 * @attr: device attributes
364 * @buf: buffer where data will be returned
365 */
bootflag_show(struct device * dev,struct device_attribute * attr,char * buf)366 static ssize_t bootflag_show(struct device *dev,
367 struct device_attribute *attr, char *buf)
368 {
369 struct mrvl_mesh_defaults defs;
370 int ret;
371
372 ret = mesh_get_default_parameters(dev, &defs);
373
374 if (ret)
375 return ret;
376
377 return sysfs_emit(buf, "%d\n", le32_to_cpu(defs.bootflag));
378 }
379
380 /**
381 * bootflag_store - Set function for sysfs attribute bootflag
382 * @dev: the &struct device
383 * @attr: device attributes
384 * @buf: buffer that contains new attribute value
385 * @count: size of buffer
386 */
bootflag_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)387 static ssize_t bootflag_store(struct device *dev, struct device_attribute *attr,
388 const char *buf, size_t count)
389 {
390 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
391 struct cmd_ds_mesh_config cmd;
392 uint32_t datum;
393 int ret;
394
395 ret = kstrtouint(buf, 10, &datum);
396 if (ret)
397 return ret;
398 if (datum > 1)
399 return -EINVAL;
400
401 memset(&cmd, 0, sizeof(cmd));
402 *((__le32 *)&cmd.data[0]) = cpu_to_le32(!!datum);
403 cmd.length = cpu_to_le16(sizeof(uint32_t));
404 ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
405 CMD_TYPE_MESH_SET_BOOTFLAG);
406 if (ret)
407 return ret;
408
409 return strlen(buf);
410 }
411
412 /**
413 * boottime_show - Get function for sysfs attribute boottime
414 * @dev: the &struct device
415 * @attr: device attributes
416 * @buf: buffer where data will be returned
417 */
boottime_show(struct device * dev,struct device_attribute * attr,char * buf)418 static ssize_t boottime_show(struct device *dev,
419 struct device_attribute *attr, char *buf)
420 {
421 struct mrvl_mesh_defaults defs;
422 int ret;
423
424 ret = mesh_get_default_parameters(dev, &defs);
425
426 if (ret)
427 return ret;
428
429 return sysfs_emit(buf, "%d\n", defs.boottime);
430 }
431
432 /**
433 * boottime_store - Set function for sysfs attribute boottime
434 * @dev: the &struct device
435 * @attr: device attributes
436 * @buf: buffer that contains new attribute value
437 * @count: size of buffer
438 */
boottime_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)439 static ssize_t boottime_store(struct device *dev,
440 struct device_attribute *attr,
441 const char *buf, size_t count)
442 {
443 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
444 struct cmd_ds_mesh_config cmd;
445 uint32_t datum;
446 int ret;
447
448 ret = kstrtouint(buf, 10, &datum);
449 if (ret)
450 return ret;
451 if (datum > 255)
452 return -EINVAL;
453
454 memset(&cmd, 0, sizeof(cmd));
455
456 /* A too small boot time will result in the device booting into
457 * standalone (no-host) mode before the host can take control of it,
458 * so the change will be hard to revert. This may be a desired
459 * feature (e.g to configure a very fast boot time for devices that
460 * will not be attached to a host), but dangerous. So I'm enforcing a
461 * lower limit of 20 seconds: remove and recompile the driver if this
462 * does not work for you.
463 */
464 datum = (datum < 20) ? 20 : datum;
465 cmd.data[0] = datum;
466 cmd.length = cpu_to_le16(sizeof(uint8_t));
467 ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
468 CMD_TYPE_MESH_SET_BOOTTIME);
469 if (ret)
470 return ret;
471
472 return strlen(buf);
473 }
474
475 /**
476 * channel_show - Get function for sysfs attribute channel
477 * @dev: the &struct device
478 * @attr: device attributes
479 * @buf: buffer where data will be returned
480 */
channel_show(struct device * dev,struct device_attribute * attr,char * buf)481 static ssize_t channel_show(struct device *dev,
482 struct device_attribute *attr, char *buf)
483 {
484 struct mrvl_mesh_defaults defs;
485 int ret;
486
487 ret = mesh_get_default_parameters(dev, &defs);
488
489 if (ret)
490 return ret;
491
492 return sysfs_emit(buf, "%d\n", le16_to_cpu(defs.channel));
493 }
494
495 /**
496 * channel_store - Set function for sysfs attribute channel
497 * @dev: the &struct device
498 * @attr: device attributes
499 * @buf: buffer that contains new attribute value
500 * @count: size of buffer
501 */
channel_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)502 static ssize_t channel_store(struct device *dev, struct device_attribute *attr,
503 const char *buf, size_t count)
504 {
505 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
506 struct cmd_ds_mesh_config cmd;
507 uint32_t datum;
508 int ret;
509
510 ret = kstrtouint(buf, 10, &datum);
511 if (ret)
512 return ret;
513 if (datum < 1 || datum > 11)
514 return -EINVAL;
515
516 memset(&cmd, 0, sizeof(cmd));
517 *((__le16 *)&cmd.data[0]) = cpu_to_le16(datum);
518 cmd.length = cpu_to_le16(sizeof(uint16_t));
519 ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
520 CMD_TYPE_MESH_SET_DEF_CHANNEL);
521 if (ret)
522 return ret;
523
524 return strlen(buf);
525 }
526
527 /**
528 * mesh_id_show - Get function for sysfs attribute mesh_id
529 * @dev: the &struct device
530 * @attr: device attributes
531 * @buf: buffer where data will be returned
532 */
mesh_id_show(struct device * dev,struct device_attribute * attr,char * buf)533 static ssize_t mesh_id_show(struct device *dev, struct device_attribute *attr,
534 char *buf)
535 {
536 struct mrvl_mesh_defaults defs;
537 int ret;
538
539 ret = mesh_get_default_parameters(dev, &defs);
540
541 if (ret)
542 return ret;
543
544 if (defs.meshie.val.mesh_id_len > IEEE80211_MAX_SSID_LEN) {
545 dev_err(dev, "inconsistent mesh ID length\n");
546 defs.meshie.val.mesh_id_len = IEEE80211_MAX_SSID_LEN;
547 }
548
549 memcpy(buf, defs.meshie.val.mesh_id, defs.meshie.val.mesh_id_len);
550 buf[defs.meshie.val.mesh_id_len] = '\n';
551 buf[defs.meshie.val.mesh_id_len + 1] = '\0';
552
553 return defs.meshie.val.mesh_id_len + 1;
554 }
555
556 /**
557 * mesh_id_store - Set function for sysfs attribute mesh_id
558 * @dev: the &struct device
559 * @attr: device attributes
560 * @buf: buffer that contains new attribute value
561 * @count: size of buffer
562 */
mesh_id_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)563 static ssize_t mesh_id_store(struct device *dev, struct device_attribute *attr,
564 const char *buf, size_t count)
565 {
566 struct cmd_ds_mesh_config cmd;
567 struct mrvl_mesh_defaults defs;
568 struct mrvl_meshie *ie;
569 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
570 int len;
571 int ret;
572
573 if (count < 2 || count > IEEE80211_MAX_SSID_LEN + 1)
574 return -EINVAL;
575
576 memset(&cmd, 0, sizeof(struct cmd_ds_mesh_config));
577 ie = (struct mrvl_meshie *) &cmd.data[0];
578
579 /* fetch all other Information Element parameters */
580 ret = mesh_get_default_parameters(dev, &defs);
581
582 cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie));
583
584 /* transfer IE elements */
585 memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie));
586
587 len = count - 1;
588 memcpy(ie->val.mesh_id, buf, len);
589 /* SSID len */
590 ie->val.mesh_id_len = len;
591 /* IE len */
592 ie->len = sizeof(struct mrvl_meshie_val) - IEEE80211_MAX_SSID_LEN + len;
593
594 ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
595 CMD_TYPE_MESH_SET_MESH_IE);
596 if (ret)
597 return ret;
598
599 return strlen(buf);
600 }
601
602 /**
603 * protocol_id_show - Get function for sysfs attribute protocol_id
604 * @dev: the &struct device
605 * @attr: device attributes
606 * @buf: buffer where data will be returned
607 */
protocol_id_show(struct device * dev,struct device_attribute * attr,char * buf)608 static ssize_t protocol_id_show(struct device *dev,
609 struct device_attribute *attr,
610 char *buf)
611 {
612 struct mrvl_mesh_defaults defs;
613 int ret;
614
615 ret = mesh_get_default_parameters(dev, &defs);
616
617 if (ret)
618 return ret;
619
620 return sysfs_emit(buf, "%d\n", defs.meshie.val.active_protocol_id);
621 }
622
623 /**
624 * protocol_id_store - Set function for sysfs attribute protocol_id
625 * @dev: the &struct device
626 * @attr: device attributes
627 * @buf: buffer that contains new attribute value
628 * @count: size of buffer
629 */
protocol_id_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)630 static ssize_t protocol_id_store(struct device *dev,
631 struct device_attribute *attr,
632 const char *buf, size_t count)
633 {
634 struct cmd_ds_mesh_config cmd;
635 struct mrvl_mesh_defaults defs;
636 struct mrvl_meshie *ie;
637 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
638 uint32_t datum;
639 int ret;
640
641 ret = kstrtouint(buf, 10, &datum);
642 if (ret)
643 return ret;
644 if (datum > 255)
645 return -EINVAL;
646
647 memset(&cmd, 0, sizeof(cmd));
648
649 /* fetch all other Information Element parameters */
650 ret = mesh_get_default_parameters(dev, &defs);
651
652 cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie));
653
654 /* transfer IE elements */
655 ie = (struct mrvl_meshie *) &cmd.data[0];
656 memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie));
657 /* update protocol id */
658 ie->val.active_protocol_id = datum;
659
660 ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
661 CMD_TYPE_MESH_SET_MESH_IE);
662 if (ret)
663 return ret;
664
665 return strlen(buf);
666 }
667
668 /**
669 * metric_id_show - Get function for sysfs attribute metric_id
670 * @dev: the &struct device
671 * @attr: device attributes
672 * @buf: buffer where data will be returned
673 */
metric_id_show(struct device * dev,struct device_attribute * attr,char * buf)674 static ssize_t metric_id_show(struct device *dev,
675 struct device_attribute *attr, char *buf)
676 {
677 struct mrvl_mesh_defaults defs;
678 int ret;
679
680 ret = mesh_get_default_parameters(dev, &defs);
681
682 if (ret)
683 return ret;
684
685 return sysfs_emit(buf, "%d\n", defs.meshie.val.active_metric_id);
686 }
687
688 /**
689 * metric_id_store - Set function for sysfs attribute metric_id
690 * @dev: the &struct device
691 * @attr: device attributes
692 * @buf: buffer that contains new attribute value
693 * @count: size of buffer
694 */
metric_id_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)695 static ssize_t metric_id_store(struct device *dev,
696 struct device_attribute *attr,
697 const char *buf, size_t count)
698 {
699 struct cmd_ds_mesh_config cmd;
700 struct mrvl_mesh_defaults defs;
701 struct mrvl_meshie *ie;
702 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
703 uint32_t datum;
704 int ret;
705
706 memset(&cmd, 0, sizeof(cmd));
707 ret = sscanf(buf, "%d", &datum);
708 if ((ret != 1) || (datum > 255))
709 return -EINVAL;
710
711 /* fetch all other Information Element parameters */
712 ret = mesh_get_default_parameters(dev, &defs);
713
714 cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie));
715
716 /* transfer IE elements */
717 ie = (struct mrvl_meshie *) &cmd.data[0];
718 memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie));
719 /* update metric id */
720 ie->val.active_metric_id = datum;
721
722 ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
723 CMD_TYPE_MESH_SET_MESH_IE);
724 if (ret)
725 return ret;
726
727 return strlen(buf);
728 }
729
730 /**
731 * capability_show - Get function for sysfs attribute capability
732 * @dev: the &struct device
733 * @attr: device attributes
734 * @buf: buffer where data will be returned
735 */
capability_show(struct device * dev,struct device_attribute * attr,char * buf)736 static ssize_t capability_show(struct device *dev,
737 struct device_attribute *attr, char *buf)
738 {
739 struct mrvl_mesh_defaults defs;
740 int ret;
741
742 ret = mesh_get_default_parameters(dev, &defs);
743
744 if (ret)
745 return ret;
746
747 return sysfs_emit(buf, "%d\n", defs.meshie.val.mesh_capability);
748 }
749
750 /**
751 * capability_store - Set function for sysfs attribute capability
752 * @dev: the &struct device
753 * @attr: device attributes
754 * @buf: buffer that contains new attribute value
755 * @count: size of buffer
756 */
capability_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)757 static ssize_t capability_store(struct device *dev,
758 struct device_attribute *attr,
759 const char *buf, size_t count)
760 {
761 struct cmd_ds_mesh_config cmd;
762 struct mrvl_mesh_defaults defs;
763 struct mrvl_meshie *ie;
764 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
765 uint32_t datum;
766 int ret;
767
768 memset(&cmd, 0, sizeof(cmd));
769 ret = sscanf(buf, "%d", &datum);
770 if ((ret != 1) || (datum > 255))
771 return -EINVAL;
772
773 /* fetch all other Information Element parameters */
774 ret = mesh_get_default_parameters(dev, &defs);
775
776 cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie));
777
778 /* transfer IE elements */
779 ie = (struct mrvl_meshie *) &cmd.data[0];
780 memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie));
781 /* update value */
782 ie->val.mesh_capability = datum;
783
784 ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
785 CMD_TYPE_MESH_SET_MESH_IE);
786 if (ret)
787 return ret;
788
789 return strlen(buf);
790 }
791
792
793 static DEVICE_ATTR_RW(bootflag);
794 static DEVICE_ATTR_RW(boottime);
795 static DEVICE_ATTR_RW(channel);
796 static DEVICE_ATTR_RW(mesh_id);
797 static DEVICE_ATTR_RW(protocol_id);
798 static DEVICE_ATTR_RW(metric_id);
799 static DEVICE_ATTR_RW(capability);
800
801 static struct attribute *boot_opts_attrs[] = {
802 &dev_attr_bootflag.attr,
803 &dev_attr_boottime.attr,
804 &dev_attr_channel.attr,
805 NULL
806 };
807
808 static const struct attribute_group boot_opts_group = {
809 .name = "boot_options",
810 .attrs = boot_opts_attrs,
811 };
812
813 static struct attribute *mesh_ie_attrs[] = {
814 &dev_attr_mesh_id.attr,
815 &dev_attr_protocol_id.attr,
816 &dev_attr_metric_id.attr,
817 &dev_attr_capability.attr,
818 NULL
819 };
820
821 static const struct attribute_group mesh_ie_group = {
822 .name = "mesh_ie",
823 .attrs = mesh_ie_attrs,
824 };
825
826
827 /***************************************************************************
828 * Initializing and starting, stopping mesh
829 */
830
831 /*
832 * Check mesh FW version and appropriately send the mesh start
833 * command
834 */
lbs_init_mesh(struct lbs_private * priv)835 void lbs_init_mesh(struct lbs_private *priv)
836 {
837 /* Determine mesh_fw_ver from fwrelease and fwcapinfo */
838 /* 5.0.16p0 9.0.0.p0 is known to NOT support any mesh */
839 /* 5.110.22 have mesh command with 0xa3 command id */
840 /* 10.0.0.p0 FW brings in mesh config command with different id */
841 /* Check FW version MSB and initialize mesh_fw_ver */
842 if (MRVL_FW_MAJOR_REV(priv->fwrelease) == MRVL_FW_V5) {
843 /* Enable mesh, if supported, and work out which TLV it uses.
844 0x100 + 291 is an unofficial value used in 5.110.20.pXX
845 0x100 + 37 is the official value used in 5.110.21.pXX
846 but we check them in that order because 20.pXX doesn't
847 give an error -- it just silently fails. */
848
849 /* 5.110.20.pXX firmware will fail the command if the channel
850 doesn't match the existing channel. But only if the TLV
851 is correct. If the channel is wrong, _BOTH_ versions will
852 give an error to 0x100+291, and allow 0x100+37 to succeed.
853 It's just that 5.110.20.pXX will not have done anything
854 useful */
855
856 priv->mesh_tlv = TLV_TYPE_OLD_MESH_ID;
857 if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, 1)) {
858 priv->mesh_tlv = TLV_TYPE_MESH_ID;
859 if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, 1))
860 priv->mesh_tlv = 0;
861 }
862 } else
863 if ((MRVL_FW_MAJOR_REV(priv->fwrelease) >= MRVL_FW_V10) &&
864 (priv->fwcapinfo & MESH_CAPINFO_ENABLE_MASK)) {
865 /* 10.0.0.pXX new firmwares should succeed with TLV
866 * 0x100+37; Do not invoke command with old TLV.
867 */
868 priv->mesh_tlv = TLV_TYPE_MESH_ID;
869 if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, 1))
870 priv->mesh_tlv = 0;
871 }
872
873 /* Stop meshing until interface is brought up */
874 lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_STOP, 1);
875 }
876
lbs_start_mesh(struct lbs_private * priv)877 void lbs_start_mesh(struct lbs_private *priv)
878 {
879 lbs_add_mesh(priv);
880
881 if (device_create_file(&priv->dev->dev, &dev_attr_lbs_mesh))
882 netdev_err(priv->dev, "cannot register lbs_mesh attribute\n");
883 }
884
lbs_deinit_mesh(struct lbs_private * priv)885 int lbs_deinit_mesh(struct lbs_private *priv)
886 {
887 struct net_device *dev = priv->dev;
888 int ret = 0;
889
890 if (priv->mesh_tlv) {
891 device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
892 ret = 1;
893 }
894
895 return ret;
896 }
897
898
899 /**
900 * lbs_mesh_stop - close the mshX interface
901 *
902 * @dev: A pointer to &net_device structure
903 * returns: 0
904 */
lbs_mesh_stop(struct net_device * dev)905 static int lbs_mesh_stop(struct net_device *dev)
906 {
907 struct lbs_private *priv = dev->ml_priv;
908
909 lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_STOP,
910 lbs_mesh_get_channel(priv));
911
912 spin_lock_irq(&priv->driver_lock);
913
914 netif_stop_queue(dev);
915 netif_carrier_off(dev);
916
917 spin_unlock_irq(&priv->driver_lock);
918
919 lbs_update_mcast(priv);
920 if (!lbs_iface_active(priv))
921 lbs_stop_iface(priv);
922
923 return 0;
924 }
925
926 /**
927 * lbs_mesh_dev_open - open the mshX interface
928 *
929 * @dev: A pointer to &net_device structure
930 * returns: 0 or -EBUSY if monitor mode active
931 */
lbs_mesh_dev_open(struct net_device * dev)932 static int lbs_mesh_dev_open(struct net_device *dev)
933 {
934 struct lbs_private *priv = dev->ml_priv;
935 int ret = 0;
936
937 if (!priv->iface_running) {
938 ret = lbs_start_iface(priv);
939 if (ret)
940 goto out;
941 }
942
943 spin_lock_irq(&priv->driver_lock);
944
945 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR) {
946 ret = -EBUSY;
947 spin_unlock_irq(&priv->driver_lock);
948 goto out;
949 }
950
951 netif_carrier_on(dev);
952
953 if (!priv->tx_pending_len)
954 netif_wake_queue(dev);
955
956 spin_unlock_irq(&priv->driver_lock);
957
958 ret = lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
959 lbs_mesh_get_channel(priv));
960
961 out:
962 return ret;
963 }
964
965 static const struct net_device_ops mesh_netdev_ops = {
966 .ndo_open = lbs_mesh_dev_open,
967 .ndo_stop = lbs_mesh_stop,
968 .ndo_start_xmit = lbs_hard_start_xmit,
969 .ndo_set_mac_address = lbs_set_mac_address,
970 .ndo_set_rx_mode = lbs_set_multicast_list,
971 };
972
973 /**
974 * lbs_add_mesh - add mshX interface
975 *
976 * @priv: A pointer to the &struct lbs_private structure
977 * returns: 0 if successful, -X otherwise
978 */
lbs_add_mesh(struct lbs_private * priv)979 static int lbs_add_mesh(struct lbs_private *priv)
980 {
981 struct net_device *mesh_dev = NULL;
982 struct wireless_dev *mesh_wdev;
983 int ret = 0;
984
985 /* Allocate a virtual mesh device */
986 mesh_wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
987 if (!mesh_wdev) {
988 lbs_deb_mesh("init mshX wireless device failed\n");
989 ret = -ENOMEM;
990 goto done;
991 }
992
993 mesh_dev = alloc_netdev(0, "msh%d", NET_NAME_UNKNOWN, ether_setup);
994 if (!mesh_dev) {
995 lbs_deb_mesh("init mshX device failed\n");
996 ret = -ENOMEM;
997 goto err_free_wdev;
998 }
999
1000 mesh_wdev->iftype = NL80211_IFTYPE_MESH_POINT;
1001 mesh_wdev->wiphy = priv->wdev->wiphy;
1002
1003 if (priv->mesh_tlv) {
1004 sprintf(mesh_wdev->u.mesh.id, "mesh");
1005 mesh_wdev->u.mesh.id_up_len = 4;
1006 }
1007
1008 mesh_wdev->netdev = mesh_dev;
1009
1010 mesh_dev->ml_priv = priv;
1011 mesh_dev->ieee80211_ptr = mesh_wdev;
1012 priv->mesh_dev = mesh_dev;
1013
1014 mesh_dev->netdev_ops = &mesh_netdev_ops;
1015 mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1016 eth_hw_addr_inherit(mesh_dev, priv->dev);
1017
1018 SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
1019
1020 mesh_dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1021 mesh_dev->sysfs_groups[0] = &lbs_mesh_attr_group;
1022 mesh_dev->sysfs_groups[1] = &boot_opts_group;
1023 mesh_dev->sysfs_groups[2] = &mesh_ie_group;
1024
1025 /* Register virtual mesh interface */
1026 ret = register_netdev(mesh_dev);
1027 if (ret) {
1028 pr_err("cannot register mshX virtual interface\n");
1029 goto err_free_netdev;
1030 }
1031
1032 /* Everything successful */
1033 ret = 0;
1034 goto done;
1035
1036 err_free_netdev:
1037 free_netdev(mesh_dev);
1038
1039 err_free_wdev:
1040 kfree(mesh_wdev);
1041
1042 done:
1043 return ret;
1044 }
1045
lbs_remove_mesh(struct lbs_private * priv)1046 void lbs_remove_mesh(struct lbs_private *priv)
1047 {
1048 struct net_device *mesh_dev;
1049
1050 mesh_dev = priv->mesh_dev;
1051 if (!mesh_dev)
1052 return;
1053
1054 netif_stop_queue(mesh_dev);
1055 netif_carrier_off(mesh_dev);
1056 unregister_netdev(mesh_dev);
1057 priv->mesh_dev = NULL;
1058 kfree(mesh_dev->ieee80211_ptr);
1059 free_netdev(mesh_dev);
1060 }
1061
1062
1063 /***************************************************************************
1064 * Sending and receiving
1065 */
lbs_mesh_set_dev(struct lbs_private * priv,struct net_device * dev,struct rxpd * rxpd)1066 struct net_device *lbs_mesh_set_dev(struct lbs_private *priv,
1067 struct net_device *dev, struct rxpd *rxpd)
1068 {
1069 if (priv->mesh_dev) {
1070 if (priv->mesh_tlv == TLV_TYPE_OLD_MESH_ID) {
1071 if (rxpd->rx_control & RxPD_MESH_FRAME)
1072 dev = priv->mesh_dev;
1073 } else if (priv->mesh_tlv == TLV_TYPE_MESH_ID) {
1074 if (rxpd->u.bss.bss_num == MESH_IFACE_ID)
1075 dev = priv->mesh_dev;
1076 }
1077 }
1078 return dev;
1079 }
1080
1081
lbs_mesh_set_txpd(struct lbs_private * priv,struct net_device * dev,struct txpd * txpd)1082 void lbs_mesh_set_txpd(struct lbs_private *priv,
1083 struct net_device *dev, struct txpd *txpd)
1084 {
1085 if (dev == priv->mesh_dev) {
1086 if (priv->mesh_tlv == TLV_TYPE_OLD_MESH_ID)
1087 txpd->tx_control |= cpu_to_le32(TxPD_MESH_FRAME);
1088 else if (priv->mesh_tlv == TLV_TYPE_MESH_ID)
1089 txpd->u.bss.bss_num = MESH_IFACE_ID;
1090 }
1091 }
1092
1093
1094 /***************************************************************************
1095 * Ethtool related
1096 */
1097
1098 static const char mesh_stat_strings[MESH_STATS_NUM][ETH_GSTRING_LEN] = {
1099 "drop_duplicate_bcast",
1100 "drop_ttl_zero",
1101 "drop_no_fwd_route",
1102 "drop_no_buffers",
1103 "fwded_unicast_cnt",
1104 "fwded_bcast_cnt",
1105 "drop_blind_table",
1106 "tx_failed_cnt"
1107 };
1108
lbs_mesh_ethtool_get_stats(struct net_device * dev,struct ethtool_stats * stats,uint64_t * data)1109 void lbs_mesh_ethtool_get_stats(struct net_device *dev,
1110 struct ethtool_stats *stats, uint64_t *data)
1111 {
1112 struct lbs_private *priv = dev->ml_priv;
1113 struct cmd_ds_mesh_access mesh_access;
1114 int ret;
1115
1116 /* Get Mesh Statistics */
1117 ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_STATS, &mesh_access);
1118
1119 if (ret) {
1120 memset(data, 0, MESH_STATS_NUM*(sizeof(uint64_t)));
1121 return;
1122 }
1123
1124 priv->mstats.fwd_drop_rbt = le32_to_cpu(mesh_access.data[0]);
1125 priv->mstats.fwd_drop_ttl = le32_to_cpu(mesh_access.data[1]);
1126 priv->mstats.fwd_drop_noroute = le32_to_cpu(mesh_access.data[2]);
1127 priv->mstats.fwd_drop_nobuf = le32_to_cpu(mesh_access.data[3]);
1128 priv->mstats.fwd_unicast_cnt = le32_to_cpu(mesh_access.data[4]);
1129 priv->mstats.fwd_bcast_cnt = le32_to_cpu(mesh_access.data[5]);
1130 priv->mstats.drop_blind = le32_to_cpu(mesh_access.data[6]);
1131 priv->mstats.tx_failed_cnt = le32_to_cpu(mesh_access.data[7]);
1132
1133 data[0] = priv->mstats.fwd_drop_rbt;
1134 data[1] = priv->mstats.fwd_drop_ttl;
1135 data[2] = priv->mstats.fwd_drop_noroute;
1136 data[3] = priv->mstats.fwd_drop_nobuf;
1137 data[4] = priv->mstats.fwd_unicast_cnt;
1138 data[5] = priv->mstats.fwd_bcast_cnt;
1139 data[6] = priv->mstats.drop_blind;
1140 data[7] = priv->mstats.tx_failed_cnt;
1141 }
1142
lbs_mesh_ethtool_get_sset_count(struct net_device * dev,int sset)1143 int lbs_mesh_ethtool_get_sset_count(struct net_device *dev, int sset)
1144 {
1145 struct lbs_private *priv = dev->ml_priv;
1146
1147 if (sset == ETH_SS_STATS && dev == priv->mesh_dev)
1148 return MESH_STATS_NUM;
1149
1150 return -EOPNOTSUPP;
1151 }
1152
lbs_mesh_ethtool_get_strings(struct net_device * dev,uint32_t stringset,uint8_t * s)1153 void lbs_mesh_ethtool_get_strings(struct net_device *dev,
1154 uint32_t stringset, uint8_t *s)
1155 {
1156 switch (stringset) {
1157 case ETH_SS_STATS:
1158 memcpy(s, mesh_stat_strings, sizeof(mesh_stat_strings));
1159 break;
1160 }
1161 }
1162