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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
19static int lbs_add_mesh(struct lbs_private *priv);
20
21/***************************************************************************
22 * Mesh command handling
23 */
24
25static 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
41static 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
68static 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 */
86static int lbs_mesh_config(struct lbs_private *priv, uint16_t action,
87 uint16_t chan)
88{
89 struct cmd_ds_mesh_config cmd;
90 struct mrvl_meshie *ie;
91
92 memset(&cmd, 0, sizeof(cmd));
93 cmd.channel = cpu_to_le16(chan);
94 ie = (struct mrvl_meshie *)cmd.data;
95
96 switch (action) {
97 case CMD_ACT_MESH_CONFIG_START:
98 ie->id = WLAN_EID_VENDOR_SPECIFIC;
99 ie->val.oui[0] = 0x00;
100 ie->val.oui[1] = 0x50;
101 ie->val.oui[2] = 0x43;
102 ie->val.type = MARVELL_MESH_IE_TYPE;
103 ie->val.subtype = MARVELL_MESH_IE_SUBTYPE;
104 ie->val.version = MARVELL_MESH_IE_VERSION;
105 ie->val.active_protocol_id = MARVELL_MESH_PROTO_ID_HWMP;
106 ie->val.active_metric_id = MARVELL_MESH_METRIC_ID;
107 ie->val.mesh_capability = MARVELL_MESH_CAPABILITY;
108 ie->val.mesh_id_len = priv->mesh_ssid_len;
109 memcpy(ie->val.mesh_id, priv->mesh_ssid, priv->mesh_ssid_len);
110 ie->len = sizeof(struct mrvl_meshie_val) -
111 IEEE80211_MAX_SSID_LEN + priv->mesh_ssid_len;
112 cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie_val));
113 break;
114 case CMD_ACT_MESH_CONFIG_STOP:
115 break;
116 default:
117 return -1;
118 }
119 lbs_deb_cmd("mesh config action %d type %x channel %d SSID %*pE\n",
120 action, priv->mesh_tlv, chan, priv->mesh_ssid_len,
121 priv->mesh_ssid);
122
123 return __lbs_mesh_config_send(priv, &cmd, action, priv->mesh_tlv);
124}
125
126int lbs_mesh_set_channel(struct lbs_private *priv, u8 channel)
127{
128 priv->mesh_channel = channel;
129 return lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, channel);
130}
131
132static uint16_t lbs_mesh_get_channel(struct lbs_private *priv)
133{
134 return priv->mesh_channel ?: 1;
135}
136
137/***************************************************************************
138 * Mesh sysfs support
139 */
140
141/*
142 * Attributes exported through sysfs
143 */
144
145/**
146 * lbs_anycast_get - Get function for sysfs attribute anycast_mask
147 * @dev: the &struct device
148 * @attr: device attributes
149 * @buf: buffer where data will be returned
150 */
151static ssize_t lbs_anycast_get(struct device *dev,
152 struct device_attribute *attr, char * buf)
153{
154 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
155 struct cmd_ds_mesh_access mesh_access;
156 int ret;
157
158 memset(&mesh_access, 0, sizeof(mesh_access));
159
160 ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_ANYCAST, &mesh_access);
161 if (ret)
162 return ret;
163
164 return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
165}
166
167/**
168 * lbs_anycast_set - Set function for sysfs attribute anycast_mask
169 * @dev: the &struct device
170 * @attr: device attributes
171 * @buf: buffer that contains new attribute value
172 * @count: size of buffer
173 */
174static ssize_t lbs_anycast_set(struct device *dev,
175 struct device_attribute *attr, const char * buf, size_t count)
176{
177 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
178 struct cmd_ds_mesh_access mesh_access;
179 uint32_t datum;
180 int ret;
181
182 memset(&mesh_access, 0, sizeof(mesh_access));
183 sscanf(buf, "%x", &datum);
184 mesh_access.data[0] = cpu_to_le32(datum);
185
186 ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_ANYCAST, &mesh_access);
187 if (ret)
188 return ret;
189
190 return strlen(buf);
191}
192
193/**
194 * lbs_prb_rsp_limit_get - Get function for sysfs attribute prb_rsp_limit
195 * @dev: the &struct device
196 * @attr: device attributes
197 * @buf: buffer where data will be returned
198 */
199static ssize_t lbs_prb_rsp_limit_get(struct device *dev,
200 struct device_attribute *attr, char *buf)
201{
202 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
203 struct cmd_ds_mesh_access mesh_access;
204 int ret;
205 u32 retry_limit;
206
207 memset(&mesh_access, 0, sizeof(mesh_access));
208 mesh_access.data[0] = cpu_to_le32(CMD_ACT_GET);
209
210 ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_GET_PRB_RSP_LIMIT,
211 &mesh_access);
212 if (ret)
213 return ret;
214
215 retry_limit = le32_to_cpu(mesh_access.data[1]);
216 return snprintf(buf, 10, "%d\n", retry_limit);
217}
218
219/**
220 * lbs_prb_rsp_limit_set - Set function for sysfs attribute prb_rsp_limit
221 * @dev: the &struct device
222 * @attr: device attributes
223 * @buf: buffer that contains new attribute value
224 * @count: size of buffer
225 */
226static ssize_t lbs_prb_rsp_limit_set(struct device *dev,
227 struct device_attribute *attr, const char *buf, size_t count)
228{
229 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
230 struct cmd_ds_mesh_access mesh_access;
231 int ret;
232 unsigned long retry_limit;
233
234 memset(&mesh_access, 0, sizeof(mesh_access));
235 mesh_access.data[0] = cpu_to_le32(CMD_ACT_SET);
236
237 ret = kstrtoul(buf, 10, &retry_limit);
238 if (ret)
239 return ret;
240 if (retry_limit > 15)
241 return -ENOTSUPP;
242
243 mesh_access.data[1] = cpu_to_le32(retry_limit);
244
245 ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_GET_PRB_RSP_LIMIT,
246 &mesh_access);
247 if (ret)
248 return ret;
249
250 return strlen(buf);
251}
252
253/**
254 * lbs_mesh_get - Get function for sysfs attribute mesh
255 * @dev: the &struct device
256 * @attr: device attributes
257 * @buf: buffer where data will be returned
258 */
259static ssize_t lbs_mesh_get(struct device *dev,
260 struct device_attribute *attr, char * buf)
261{
262 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
263 return snprintf(buf, 5, "0x%X\n", !!priv->mesh_dev);
264}
265
266/**
267 * lbs_mesh_set - Set function for sysfs attribute mesh
268 * @dev: the &struct device
269 * @attr: device attributes
270 * @buf: buffer that contains new attribute value
271 * @count: size of buffer
272 */
273static ssize_t lbs_mesh_set(struct device *dev,
274 struct device_attribute *attr, const char * buf, size_t count)
275{
276 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
277 int enable;
278
279 sscanf(buf, "%x", &enable);
280 enable = !!enable;
281 if (enable == !!priv->mesh_dev)
282 return count;
283
284 if (enable)
285 lbs_add_mesh(priv);
286 else
287 lbs_remove_mesh(priv);
288
289 return count;
290}
291
292/*
293 * lbs_mesh attribute to be exported per ethX interface
294 * through sysfs (/sys/class/net/ethX/lbs_mesh)
295 */
296static DEVICE_ATTR(lbs_mesh, 0644, lbs_mesh_get, lbs_mesh_set);
297
298/*
299 * anycast_mask attribute to be exported per mshX interface
300 * through sysfs (/sys/class/net/mshX/anycast_mask)
301 */
302static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
303
304/*
305 * prb_rsp_limit attribute to be exported per mshX interface
306 * through sysfs (/sys/class/net/mshX/prb_rsp_limit)
307 */
308static DEVICE_ATTR(prb_rsp_limit, 0644, lbs_prb_rsp_limit_get,
309 lbs_prb_rsp_limit_set);
310
311static struct attribute *lbs_mesh_sysfs_entries[] = {
312 &dev_attr_anycast_mask.attr,
313 &dev_attr_prb_rsp_limit.attr,
314 NULL,
315};
316
317static const struct attribute_group lbs_mesh_attr_group = {
318 .attrs = lbs_mesh_sysfs_entries,
319};
320
321
322/***************************************************************************
323 * Persistent configuration support
324 */
325
326static int mesh_get_default_parameters(struct device *dev,
327 struct mrvl_mesh_defaults *defs)
328{
329 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
330 struct cmd_ds_mesh_config cmd;
331 int ret;
332
333 memset(&cmd, 0, sizeof(struct cmd_ds_mesh_config));
334 ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_GET,
335 CMD_TYPE_MESH_GET_DEFAULTS);
336
337 if (ret)
338 return -EOPNOTSUPP;
339
340 memcpy(defs, &cmd.data[0], sizeof(struct mrvl_mesh_defaults));
341
342 return 0;
343}
344
345/**
346 * bootflag_get - Get function for sysfs attribute bootflag
347 * @dev: the &struct device
348 * @attr: device attributes
349 * @buf: buffer where data will be returned
350 */
351static ssize_t bootflag_get(struct device *dev,
352 struct device_attribute *attr, char *buf)
353{
354 struct mrvl_mesh_defaults defs;
355 int ret;
356
357 ret = mesh_get_default_parameters(dev, &defs);
358
359 if (ret)
360 return ret;
361
362 return snprintf(buf, 12, "%d\n", le32_to_cpu(defs.bootflag));
363}
364
365/**
366 * bootflag_set - Set function for sysfs attribute bootflag
367 * @dev: the &struct device
368 * @attr: device attributes
369 * @buf: buffer that contains new attribute value
370 * @count: size of buffer
371 */
372static ssize_t bootflag_set(struct device *dev, struct device_attribute *attr,
373 const char *buf, size_t count)
374{
375 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
376 struct cmd_ds_mesh_config cmd;
377 uint32_t datum;
378 int ret;
379
380 memset(&cmd, 0, sizeof(cmd));
381 ret = sscanf(buf, "%d", &datum);
382 if ((ret != 1) || (datum > 1))
383 return -EINVAL;
384
385 *((__le32 *)&cmd.data[0]) = cpu_to_le32(!!datum);
386 cmd.length = cpu_to_le16(sizeof(uint32_t));
387 ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
388 CMD_TYPE_MESH_SET_BOOTFLAG);
389 if (ret)
390 return ret;
391
392 return strlen(buf);
393}
394
395/**
396 * boottime_get - Get function for sysfs attribute boottime
397 * @dev: the &struct device
398 * @attr: device attributes
399 * @buf: buffer where data will be returned
400 */
401static ssize_t boottime_get(struct device *dev,
402 struct device_attribute *attr, char *buf)
403{
404 struct mrvl_mesh_defaults defs;
405 int ret;
406
407 ret = mesh_get_default_parameters(dev, &defs);
408
409 if (ret)
410 return ret;
411
412 return snprintf(buf, 12, "%d\n", defs.boottime);
413}
414
415/**
416 * boottime_set - Set function for sysfs attribute boottime
417 * @dev: the &struct device
418 * @attr: device attributes
419 * @buf: buffer that contains new attribute value
420 * @count: size of buffer
421 */
422static ssize_t boottime_set(struct device *dev,
423 struct device_attribute *attr, const char *buf, size_t count)
424{
425 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
426 struct cmd_ds_mesh_config cmd;
427 uint32_t datum;
428 int ret;
429
430 memset(&cmd, 0, sizeof(cmd));
431 ret = sscanf(buf, "%d", &datum);
432 if ((ret != 1) || (datum > 255))
433 return -EINVAL;
434
435 /* A too small boot time will result in the device booting into
436 * standalone (no-host) mode before the host can take control of it,
437 * so the change will be hard to revert. This may be a desired
438 * feature (e.g to configure a very fast boot time for devices that
439 * will not be attached to a host), but dangerous. So I'm enforcing a
440 * lower limit of 20 seconds: remove and recompile the driver if this
441 * does not work for you.
442 */
443 datum = (datum < 20) ? 20 : datum;
444 cmd.data[0] = datum;
445 cmd.length = cpu_to_le16(sizeof(uint8_t));
446 ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
447 CMD_TYPE_MESH_SET_BOOTTIME);
448 if (ret)
449 return ret;
450
451 return strlen(buf);
452}
453
454/**
455 * channel_get - Get function for sysfs attribute channel
456 * @dev: the &struct device
457 * @attr: device attributes
458 * @buf: buffer where data will be returned
459 */
460static ssize_t channel_get(struct device *dev,
461 struct device_attribute *attr, char *buf)
462{
463 struct mrvl_mesh_defaults defs;
464 int ret;
465
466 ret = mesh_get_default_parameters(dev, &defs);
467
468 if (ret)
469 return ret;
470
471 return snprintf(buf, 12, "%d\n", le16_to_cpu(defs.channel));
472}
473
474/**
475 * channel_set - Set function for sysfs attribute channel
476 * @dev: the &struct device
477 * @attr: device attributes
478 * @buf: buffer that contains new attribute value
479 * @count: size of buffer
480 */
481static ssize_t channel_set(struct device *dev, struct device_attribute *attr,
482 const char *buf, size_t count)
483{
484 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
485 struct cmd_ds_mesh_config cmd;
486 uint32_t datum;
487 int ret;
488
489 memset(&cmd, 0, sizeof(cmd));
490 ret = sscanf(buf, "%d", &datum);
491 if (ret != 1 || datum < 1 || datum > 11)
492 return -EINVAL;
493
494 *((__le16 *)&cmd.data[0]) = cpu_to_le16(datum);
495 cmd.length = cpu_to_le16(sizeof(uint16_t));
496 ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
497 CMD_TYPE_MESH_SET_DEF_CHANNEL);
498 if (ret)
499 return ret;
500
501 return strlen(buf);
502}
503
504/**
505 * mesh_id_get - Get function for sysfs attribute mesh_id
506 * @dev: the &struct device
507 * @attr: device attributes
508 * @buf: buffer where data will be returned
509 */
510static ssize_t mesh_id_get(struct device *dev, struct device_attribute *attr,
511 char *buf)
512{
513 struct mrvl_mesh_defaults defs;
514 int ret;
515
516 ret = mesh_get_default_parameters(dev, &defs);
517
518 if (ret)
519 return ret;
520
521 if (defs.meshie.val.mesh_id_len > IEEE80211_MAX_SSID_LEN) {
522 dev_err(dev, "inconsistent mesh ID length\n");
523 defs.meshie.val.mesh_id_len = IEEE80211_MAX_SSID_LEN;
524 }
525
526 memcpy(buf, defs.meshie.val.mesh_id, defs.meshie.val.mesh_id_len);
527 buf[defs.meshie.val.mesh_id_len] = '\n';
528 buf[defs.meshie.val.mesh_id_len + 1] = '\0';
529
530 return defs.meshie.val.mesh_id_len + 1;
531}
532
533/**
534 * mesh_id_set - Set function for sysfs attribute mesh_id
535 * @dev: the &struct device
536 * @attr: device attributes
537 * @buf: buffer that contains new attribute value
538 * @count: size of buffer
539 */
540static ssize_t mesh_id_set(struct device *dev, struct device_attribute *attr,
541 const char *buf, size_t count)
542{
543 struct cmd_ds_mesh_config cmd;
544 struct mrvl_mesh_defaults defs;
545 struct mrvl_meshie *ie;
546 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
547 int len;
548 int ret;
549
550 if (count < 2 || count > IEEE80211_MAX_SSID_LEN + 1)
551 return -EINVAL;
552
553 memset(&cmd, 0, sizeof(struct cmd_ds_mesh_config));
554 ie = (struct mrvl_meshie *) &cmd.data[0];
555
556 /* fetch all other Information Element parameters */
557 ret = mesh_get_default_parameters(dev, &defs);
558
559 cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie));
560
561 /* transfer IE elements */
562 memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie));
563
564 len = count - 1;
565 memcpy(ie->val.mesh_id, buf, len);
566 /* SSID len */
567 ie->val.mesh_id_len = len;
568 /* IE len */
569 ie->len = sizeof(struct mrvl_meshie_val) - IEEE80211_MAX_SSID_LEN + len;
570
571 ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
572 CMD_TYPE_MESH_SET_MESH_IE);
573 if (ret)
574 return ret;
575
576 return strlen(buf);
577}
578
579/**
580 * protocol_id_get - Get function for sysfs attribute protocol_id
581 * @dev: the &struct device
582 * @attr: device attributes
583 * @buf: buffer where data will be returned
584 */
585static ssize_t protocol_id_get(struct device *dev,
586 struct device_attribute *attr, char *buf)
587{
588 struct mrvl_mesh_defaults defs;
589 int ret;
590
591 ret = mesh_get_default_parameters(dev, &defs);
592
593 if (ret)
594 return ret;
595
596 return snprintf(buf, 5, "%d\n", defs.meshie.val.active_protocol_id);
597}
598
599/**
600 * protocol_id_set - Set function for sysfs attribute protocol_id
601 * @dev: the &struct device
602 * @attr: device attributes
603 * @buf: buffer that contains new attribute value
604 * @count: size of buffer
605 */
606static ssize_t protocol_id_set(struct device *dev,
607 struct device_attribute *attr, const char *buf, size_t count)
608{
609 struct cmd_ds_mesh_config cmd;
610 struct mrvl_mesh_defaults defs;
611 struct mrvl_meshie *ie;
612 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
613 uint32_t datum;
614 int ret;
615
616 memset(&cmd, 0, sizeof(cmd));
617 ret = sscanf(buf, "%d", &datum);
618 if ((ret != 1) || (datum > 255))
619 return -EINVAL;
620
621 /* fetch all other Information Element parameters */
622 ret = mesh_get_default_parameters(dev, &defs);
623
624 cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie));
625
626 /* transfer IE elements */
627 ie = (struct mrvl_meshie *) &cmd.data[0];
628 memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie));
629 /* update protocol id */
630 ie->val.active_protocol_id = datum;
631
632 ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
633 CMD_TYPE_MESH_SET_MESH_IE);
634 if (ret)
635 return ret;
636
637 return strlen(buf);
638}
639
640/**
641 * metric_id_get - Get function for sysfs attribute metric_id
642 * @dev: the &struct device
643 * @attr: device attributes
644 * @buf: buffer where data will be returned
645 */
646static ssize_t metric_id_get(struct device *dev,
647 struct device_attribute *attr, char *buf)
648{
649 struct mrvl_mesh_defaults defs;
650 int ret;
651
652 ret = mesh_get_default_parameters(dev, &defs);
653
654 if (ret)
655 return ret;
656
657 return snprintf(buf, 5, "%d\n", defs.meshie.val.active_metric_id);
658}
659
660/**
661 * metric_id_set - Set function for sysfs attribute metric_id
662 * @dev: the &struct device
663 * @attr: device attributes
664 * @buf: buffer that contains new attribute value
665 * @count: size of buffer
666 */
667static ssize_t metric_id_set(struct device *dev, struct device_attribute *attr,
668 const char *buf, size_t count)
669{
670 struct cmd_ds_mesh_config cmd;
671 struct mrvl_mesh_defaults defs;
672 struct mrvl_meshie *ie;
673 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
674 uint32_t datum;
675 int ret;
676
677 memset(&cmd, 0, sizeof(cmd));
678 ret = sscanf(buf, "%d", &datum);
679 if ((ret != 1) || (datum > 255))
680 return -EINVAL;
681
682 /* fetch all other Information Element parameters */
683 ret = mesh_get_default_parameters(dev, &defs);
684
685 cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie));
686
687 /* transfer IE elements */
688 ie = (struct mrvl_meshie *) &cmd.data[0];
689 memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie));
690 /* update metric id */
691 ie->val.active_metric_id = datum;
692
693 ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
694 CMD_TYPE_MESH_SET_MESH_IE);
695 if (ret)
696 return ret;
697
698 return strlen(buf);
699}
700
701/**
702 * capability_get - Get function for sysfs attribute capability
703 * @dev: the &struct device
704 * @attr: device attributes
705 * @buf: buffer where data will be returned
706 */
707static ssize_t capability_get(struct device *dev,
708 struct device_attribute *attr, char *buf)
709{
710 struct mrvl_mesh_defaults defs;
711 int ret;
712
713 ret = mesh_get_default_parameters(dev, &defs);
714
715 if (ret)
716 return ret;
717
718 return snprintf(buf, 5, "%d\n", defs.meshie.val.mesh_capability);
719}
720
721/**
722 * capability_set - Set function for sysfs attribute capability
723 * @dev: the &struct device
724 * @attr: device attributes
725 * @buf: buffer that contains new attribute value
726 * @count: size of buffer
727 */
728static ssize_t capability_set(struct device *dev, struct device_attribute *attr,
729 const char *buf, size_t count)
730{
731 struct cmd_ds_mesh_config cmd;
732 struct mrvl_mesh_defaults defs;
733 struct mrvl_meshie *ie;
734 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
735 uint32_t datum;
736 int ret;
737
738 memset(&cmd, 0, sizeof(cmd));
739 ret = sscanf(buf, "%d", &datum);
740 if ((ret != 1) || (datum > 255))
741 return -EINVAL;
742
743 /* fetch all other Information Element parameters */
744 ret = mesh_get_default_parameters(dev, &defs);
745
746 cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie));
747
748 /* transfer IE elements */
749 ie = (struct mrvl_meshie *) &cmd.data[0];
750 memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie));
751 /* update value */
752 ie->val.mesh_capability = datum;
753
754 ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
755 CMD_TYPE_MESH_SET_MESH_IE);
756 if (ret)
757 return ret;
758
759 return strlen(buf);
760}
761
762
763static DEVICE_ATTR(bootflag, 0644, bootflag_get, bootflag_set);
764static DEVICE_ATTR(boottime, 0644, boottime_get, boottime_set);
765static DEVICE_ATTR(channel, 0644, channel_get, channel_set);
766static DEVICE_ATTR(mesh_id, 0644, mesh_id_get, mesh_id_set);
767static DEVICE_ATTR(protocol_id, 0644, protocol_id_get, protocol_id_set);
768static DEVICE_ATTR(metric_id, 0644, metric_id_get, metric_id_set);
769static DEVICE_ATTR(capability, 0644, capability_get, capability_set);
770
771static struct attribute *boot_opts_attrs[] = {
772 &dev_attr_bootflag.attr,
773 &dev_attr_boottime.attr,
774 &dev_attr_channel.attr,
775 NULL
776};
777
778static const struct attribute_group boot_opts_group = {
779 .name = "boot_options",
780 .attrs = boot_opts_attrs,
781};
782
783static struct attribute *mesh_ie_attrs[] = {
784 &dev_attr_mesh_id.attr,
785 &dev_attr_protocol_id.attr,
786 &dev_attr_metric_id.attr,
787 &dev_attr_capability.attr,
788 NULL
789};
790
791static const struct attribute_group mesh_ie_group = {
792 .name = "mesh_ie",
793 .attrs = mesh_ie_attrs,
794};
795
796static void lbs_persist_config_init(struct net_device *dev)
797{
798 int ret;
799 ret = sysfs_create_group(&(dev->dev.kobj), &boot_opts_group);
800 ret = sysfs_create_group(&(dev->dev.kobj), &mesh_ie_group);
801}
802
803static void lbs_persist_config_remove(struct net_device *dev)
804{
805 sysfs_remove_group(&(dev->dev.kobj), &boot_opts_group);
806 sysfs_remove_group(&(dev->dev.kobj), &mesh_ie_group);
807}
808
809
810/***************************************************************************
811 * Initializing and starting, stopping mesh
812 */
813
814/*
815 * Check mesh FW version and appropriately send the mesh start
816 * command
817 */
818int lbs_init_mesh(struct lbs_private *priv)
819{
820 int ret = 0;
821
822 /* Determine mesh_fw_ver from fwrelease and fwcapinfo */
823 /* 5.0.16p0 9.0.0.p0 is known to NOT support any mesh */
824 /* 5.110.22 have mesh command with 0xa3 command id */
825 /* 10.0.0.p0 FW brings in mesh config command with different id */
826 /* Check FW version MSB and initialize mesh_fw_ver */
827 if (MRVL_FW_MAJOR_REV(priv->fwrelease) == MRVL_FW_V5) {
828 /* Enable mesh, if supported, and work out which TLV it uses.
829 0x100 + 291 is an unofficial value used in 5.110.20.pXX
830 0x100 + 37 is the official value used in 5.110.21.pXX
831 but we check them in that order because 20.pXX doesn't
832 give an error -- it just silently fails. */
833
834 /* 5.110.20.pXX firmware will fail the command if the channel
835 doesn't match the existing channel. But only if the TLV
836 is correct. If the channel is wrong, _BOTH_ versions will
837 give an error to 0x100+291, and allow 0x100+37 to succeed.
838 It's just that 5.110.20.pXX will not have done anything
839 useful */
840
841 priv->mesh_tlv = TLV_TYPE_OLD_MESH_ID;
842 if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, 1)) {
843 priv->mesh_tlv = TLV_TYPE_MESH_ID;
844 if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, 1))
845 priv->mesh_tlv = 0;
846 }
847 } else
848 if ((MRVL_FW_MAJOR_REV(priv->fwrelease) >= MRVL_FW_V10) &&
849 (priv->fwcapinfo & MESH_CAPINFO_ENABLE_MASK)) {
850 /* 10.0.0.pXX new firmwares should succeed with TLV
851 * 0x100+37; Do not invoke command with old TLV.
852 */
853 priv->mesh_tlv = TLV_TYPE_MESH_ID;
854 if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, 1))
855 priv->mesh_tlv = 0;
856 }
857
858 /* Stop meshing until interface is brought up */
859 lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_STOP, 1);
860
861 if (priv->mesh_tlv) {
862 sprintf(priv->mesh_ssid, "mesh");
863 priv->mesh_ssid_len = 4;
864 ret = 1;
865 }
866
867 return ret;
868}
869
870void lbs_start_mesh(struct lbs_private *priv)
871{
872 lbs_add_mesh(priv);
873
874 if (device_create_file(&priv->dev->dev, &dev_attr_lbs_mesh))
875 netdev_err(priv->dev, "cannot register lbs_mesh attribute\n");
876}
877
878int lbs_deinit_mesh(struct lbs_private *priv)
879{
880 struct net_device *dev = priv->dev;
881 int ret = 0;
882
883 if (priv->mesh_tlv) {
884 device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
885 ret = 1;
886 }
887
888 return ret;
889}
890
891
892/**
893 * lbs_mesh_stop - close the mshX interface
894 *
895 * @dev: A pointer to &net_device structure
896 * returns: 0
897 */
898static int lbs_mesh_stop(struct net_device *dev)
899{
900 struct lbs_private *priv = dev->ml_priv;
901
902 lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_STOP,
903 lbs_mesh_get_channel(priv));
904
905 spin_lock_irq(&priv->driver_lock);
906
907 netif_stop_queue(dev);
908 netif_carrier_off(dev);
909
910 spin_unlock_irq(&priv->driver_lock);
911
912 lbs_update_mcast(priv);
913 if (!lbs_iface_active(priv))
914 lbs_stop_iface(priv);
915
916 return 0;
917}
918
919/**
920 * lbs_mesh_dev_open - open the mshX interface
921 *
922 * @dev: A pointer to &net_device structure
923 * returns: 0 or -EBUSY if monitor mode active
924 */
925static int lbs_mesh_dev_open(struct net_device *dev)
926{
927 struct lbs_private *priv = dev->ml_priv;
928 int ret = 0;
929
930 if (!priv->iface_running) {
931 ret = lbs_start_iface(priv);
932 if (ret)
933 goto out;
934 }
935
936 spin_lock_irq(&priv->driver_lock);
937
938 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR) {
939 ret = -EBUSY;
940 spin_unlock_irq(&priv->driver_lock);
941 goto out;
942 }
943
944 netif_carrier_on(dev);
945
946 if (!priv->tx_pending_len)
947 netif_wake_queue(dev);
948
949 spin_unlock_irq(&priv->driver_lock);
950
951 ret = lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
952 lbs_mesh_get_channel(priv));
953
954out:
955 return ret;
956}
957
958static const struct net_device_ops mesh_netdev_ops = {
959 .ndo_open = lbs_mesh_dev_open,
960 .ndo_stop = lbs_mesh_stop,
961 .ndo_start_xmit = lbs_hard_start_xmit,
962 .ndo_set_mac_address = lbs_set_mac_address,
963 .ndo_set_rx_mode = lbs_set_multicast_list,
964};
965
966/**
967 * lbs_add_mesh - add mshX interface
968 *
969 * @priv: A pointer to the &struct lbs_private structure
970 * returns: 0 if successful, -X otherwise
971 */
972static int lbs_add_mesh(struct lbs_private *priv)
973{
974 struct net_device *mesh_dev = NULL;
975 struct wireless_dev *mesh_wdev;
976 int ret = 0;
977
978 /* Allocate a virtual mesh device */
979 mesh_wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
980 if (!mesh_wdev) {
981 lbs_deb_mesh("init mshX wireless device failed\n");
982 ret = -ENOMEM;
983 goto done;
984 }
985
986 mesh_dev = alloc_netdev(0, "msh%d", NET_NAME_UNKNOWN, ether_setup);
987 if (!mesh_dev) {
988 lbs_deb_mesh("init mshX device failed\n");
989 ret = -ENOMEM;
990 goto err_free_wdev;
991 }
992
993 mesh_wdev->iftype = NL80211_IFTYPE_MESH_POINT;
994 mesh_wdev->wiphy = priv->wdev->wiphy;
995 mesh_wdev->netdev = mesh_dev;
996
997 mesh_dev->ml_priv = priv;
998 mesh_dev->ieee80211_ptr = mesh_wdev;
999 priv->mesh_dev = mesh_dev;
1000
1001 mesh_dev->netdev_ops = &mesh_netdev_ops;
1002 mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1003 eth_hw_addr_inherit(mesh_dev, priv->dev);
1004
1005 SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
1006
1007 mesh_dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1008 /* Register virtual mesh interface */
1009 ret = register_netdev(mesh_dev);
1010 if (ret) {
1011 pr_err("cannot register mshX virtual interface\n");
1012 goto err_free_netdev;
1013 }
1014
1015 ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1016 if (ret)
1017 goto err_unregister;
1018
1019 lbs_persist_config_init(mesh_dev);
1020
1021 /* Everything successful */
1022 ret = 0;
1023 goto done;
1024
1025err_unregister:
1026 unregister_netdev(mesh_dev);
1027
1028err_free_netdev:
1029 free_netdev(mesh_dev);
1030
1031err_free_wdev:
1032 kfree(mesh_wdev);
1033
1034done:
1035 return ret;
1036}
1037
1038void lbs_remove_mesh(struct lbs_private *priv)
1039{
1040 struct net_device *mesh_dev;
1041
1042 mesh_dev = priv->mesh_dev;
1043 if (!mesh_dev)
1044 return;
1045
1046 netif_stop_queue(mesh_dev);
1047 netif_carrier_off(mesh_dev);
1048 sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1049 lbs_persist_config_remove(mesh_dev);
1050 unregister_netdev(mesh_dev);
1051 priv->mesh_dev = NULL;
1052 kfree(mesh_dev->ieee80211_ptr);
1053 free_netdev(mesh_dev);
1054}
1055
1056
1057/***************************************************************************
1058 * Sending and receiving
1059 */
1060struct net_device *lbs_mesh_set_dev(struct lbs_private *priv,
1061 struct net_device *dev, struct rxpd *rxpd)
1062{
1063 if (priv->mesh_dev) {
1064 if (priv->mesh_tlv == TLV_TYPE_OLD_MESH_ID) {
1065 if (rxpd->rx_control & RxPD_MESH_FRAME)
1066 dev = priv->mesh_dev;
1067 } else if (priv->mesh_tlv == TLV_TYPE_MESH_ID) {
1068 if (rxpd->u.bss.bss_num == MESH_IFACE_ID)
1069 dev = priv->mesh_dev;
1070 }
1071 }
1072 return dev;
1073}
1074
1075
1076void lbs_mesh_set_txpd(struct lbs_private *priv,
1077 struct net_device *dev, struct txpd *txpd)
1078{
1079 if (dev == priv->mesh_dev) {
1080 if (priv->mesh_tlv == TLV_TYPE_OLD_MESH_ID)
1081 txpd->tx_control |= cpu_to_le32(TxPD_MESH_FRAME);
1082 else if (priv->mesh_tlv == TLV_TYPE_MESH_ID)
1083 txpd->u.bss.bss_num = MESH_IFACE_ID;
1084 }
1085}
1086
1087
1088/***************************************************************************
1089 * Ethtool related
1090 */
1091
1092static const char mesh_stat_strings[MESH_STATS_NUM][ETH_GSTRING_LEN] = {
1093 "drop_duplicate_bcast",
1094 "drop_ttl_zero",
1095 "drop_no_fwd_route",
1096 "drop_no_buffers",
1097 "fwded_unicast_cnt",
1098 "fwded_bcast_cnt",
1099 "drop_blind_table",
1100 "tx_failed_cnt"
1101};
1102
1103void lbs_mesh_ethtool_get_stats(struct net_device *dev,
1104 struct ethtool_stats *stats, uint64_t *data)
1105{
1106 struct lbs_private *priv = dev->ml_priv;
1107 struct cmd_ds_mesh_access mesh_access;
1108 int ret;
1109
1110 /* Get Mesh Statistics */
1111 ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_STATS, &mesh_access);
1112
1113 if (ret) {
1114 memset(data, 0, MESH_STATS_NUM*(sizeof(uint64_t)));
1115 return;
1116 }
1117
1118 priv->mstats.fwd_drop_rbt = le32_to_cpu(mesh_access.data[0]);
1119 priv->mstats.fwd_drop_ttl = le32_to_cpu(mesh_access.data[1]);
1120 priv->mstats.fwd_drop_noroute = le32_to_cpu(mesh_access.data[2]);
1121 priv->mstats.fwd_drop_nobuf = le32_to_cpu(mesh_access.data[3]);
1122 priv->mstats.fwd_unicast_cnt = le32_to_cpu(mesh_access.data[4]);
1123 priv->mstats.fwd_bcast_cnt = le32_to_cpu(mesh_access.data[5]);
1124 priv->mstats.drop_blind = le32_to_cpu(mesh_access.data[6]);
1125 priv->mstats.tx_failed_cnt = le32_to_cpu(mesh_access.data[7]);
1126
1127 data[0] = priv->mstats.fwd_drop_rbt;
1128 data[1] = priv->mstats.fwd_drop_ttl;
1129 data[2] = priv->mstats.fwd_drop_noroute;
1130 data[3] = priv->mstats.fwd_drop_nobuf;
1131 data[4] = priv->mstats.fwd_unicast_cnt;
1132 data[5] = priv->mstats.fwd_bcast_cnt;
1133 data[6] = priv->mstats.drop_blind;
1134 data[7] = priv->mstats.tx_failed_cnt;
1135}
1136
1137int lbs_mesh_ethtool_get_sset_count(struct net_device *dev, int sset)
1138{
1139 struct lbs_private *priv = dev->ml_priv;
1140
1141 if (sset == ETH_SS_STATS && dev == priv->mesh_dev)
1142 return MESH_STATS_NUM;
1143
1144 return -EOPNOTSUPP;
1145}
1146
1147void lbs_mesh_ethtool_get_strings(struct net_device *dev,
1148 uint32_t stringset, uint8_t *s)
1149{
1150 switch (stringset) {
1151 case ETH_SS_STATS:
1152 memcpy(s, mesh_stat_strings, sizeof(mesh_stat_strings));
1153 break;
1154 }
1155}