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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 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->mesh_id_up_len;
113 memcpy(ie->val.mesh_id, mesh_wdev->ssid,
114 mesh_wdev->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
134int 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
140static 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 * lbs_anycast_get - 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 */
159static ssize_t lbs_anycast_get(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 snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
173}
174
175/**
176 * lbs_anycast_set - 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 */
182static ssize_t lbs_anycast_set(struct device *dev,
183 struct device_attribute *attr, const char * buf, size_t count)
184{
185 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
186 struct cmd_ds_mesh_access mesh_access;
187 uint32_t datum;
188 int ret;
189
190 memset(&mesh_access, 0, sizeof(mesh_access));
191 sscanf(buf, "%x", &datum);
192 mesh_access.data[0] = cpu_to_le32(datum);
193
194 ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_ANYCAST, &mesh_access);
195 if (ret)
196 return ret;
197
198 return strlen(buf);
199}
200
201/**
202 * lbs_prb_rsp_limit_get - Get function for sysfs attribute prb_rsp_limit
203 * @dev: the &struct device
204 * @attr: device attributes
205 * @buf: buffer where data will be returned
206 */
207static ssize_t lbs_prb_rsp_limit_get(struct device *dev,
208 struct device_attribute *attr, char *buf)
209{
210 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
211 struct cmd_ds_mesh_access mesh_access;
212 int ret;
213 u32 retry_limit;
214
215 memset(&mesh_access, 0, sizeof(mesh_access));
216 mesh_access.data[0] = cpu_to_le32(CMD_ACT_GET);
217
218 ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_GET_PRB_RSP_LIMIT,
219 &mesh_access);
220 if (ret)
221 return ret;
222
223 retry_limit = le32_to_cpu(mesh_access.data[1]);
224 return snprintf(buf, 10, "%d\n", retry_limit);
225}
226
227/**
228 * lbs_prb_rsp_limit_set - Set function for sysfs attribute prb_rsp_limit
229 * @dev: the &struct device
230 * @attr: device attributes
231 * @buf: buffer that contains new attribute value
232 * @count: size of buffer
233 */
234static ssize_t lbs_prb_rsp_limit_set(struct device *dev,
235 struct device_attribute *attr, const char *buf, size_t count)
236{
237 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
238 struct cmd_ds_mesh_access mesh_access;
239 int ret;
240 unsigned long retry_limit;
241
242 memset(&mesh_access, 0, sizeof(mesh_access));
243 mesh_access.data[0] = cpu_to_le32(CMD_ACT_SET);
244
245 ret = kstrtoul(buf, 10, &retry_limit);
246 if (ret)
247 return ret;
248 if (retry_limit > 15)
249 return -ENOTSUPP;
250
251 mesh_access.data[1] = cpu_to_le32(retry_limit);
252
253 ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_GET_PRB_RSP_LIMIT,
254 &mesh_access);
255 if (ret)
256 return ret;
257
258 return strlen(buf);
259}
260
261/**
262 * lbs_mesh_get - Get function for sysfs attribute mesh
263 * @dev: the &struct device
264 * @attr: device attributes
265 * @buf: buffer where data will be returned
266 */
267static ssize_t lbs_mesh_get(struct device *dev,
268 struct device_attribute *attr, char * buf)
269{
270 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
271 return snprintf(buf, 5, "0x%X\n", !!priv->mesh_dev);
272}
273
274/**
275 * lbs_mesh_set - Set function for sysfs attribute mesh
276 * @dev: the &struct device
277 * @attr: device attributes
278 * @buf: buffer that contains new attribute value
279 * @count: size of buffer
280 */
281static ssize_t lbs_mesh_set(struct device *dev,
282 struct device_attribute *attr, const char * buf, size_t count)
283{
284 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
285 int enable;
286
287 sscanf(buf, "%x", &enable);
288 enable = !!enable;
289 if (enable == !!priv->mesh_dev)
290 return count;
291
292 if (enable)
293 lbs_add_mesh(priv);
294 else
295 lbs_remove_mesh(priv);
296
297 return count;
298}
299
300/*
301 * lbs_mesh attribute to be exported per ethX interface
302 * through sysfs (/sys/class/net/ethX/lbs_mesh)
303 */
304static DEVICE_ATTR(lbs_mesh, 0644, lbs_mesh_get, lbs_mesh_set);
305
306/*
307 * anycast_mask attribute to be exported per mshX interface
308 * through sysfs (/sys/class/net/mshX/anycast_mask)
309 */
310static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
311
312/*
313 * prb_rsp_limit attribute to be exported per mshX interface
314 * through sysfs (/sys/class/net/mshX/prb_rsp_limit)
315 */
316static DEVICE_ATTR(prb_rsp_limit, 0644, lbs_prb_rsp_limit_get,
317 lbs_prb_rsp_limit_set);
318
319static struct attribute *lbs_mesh_sysfs_entries[] = {
320 &dev_attr_anycast_mask.attr,
321 &dev_attr_prb_rsp_limit.attr,
322 NULL,
323};
324
325static const struct attribute_group lbs_mesh_attr_group = {
326 .attrs = lbs_mesh_sysfs_entries,
327};
328
329
330/***************************************************************************
331 * Persistent configuration support
332 */
333
334static int mesh_get_default_parameters(struct device *dev,
335 struct mrvl_mesh_defaults *defs)
336{
337 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
338 struct cmd_ds_mesh_config cmd;
339 int ret;
340
341 memset(&cmd, 0, sizeof(struct cmd_ds_mesh_config));
342 ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_GET,
343 CMD_TYPE_MESH_GET_DEFAULTS);
344
345 if (ret)
346 return -EOPNOTSUPP;
347
348 memcpy(defs, &cmd.data[0], sizeof(struct mrvl_mesh_defaults));
349
350 return 0;
351}
352
353/**
354 * bootflag_get - Get function for sysfs attribute bootflag
355 * @dev: the &struct device
356 * @attr: device attributes
357 * @buf: buffer where data will be returned
358 */
359static ssize_t bootflag_get(struct device *dev,
360 struct device_attribute *attr, char *buf)
361{
362 struct mrvl_mesh_defaults defs;
363 int ret;
364
365 ret = mesh_get_default_parameters(dev, &defs);
366
367 if (ret)
368 return ret;
369
370 return snprintf(buf, 12, "%d\n", le32_to_cpu(defs.bootflag));
371}
372
373/**
374 * bootflag_set - Set function for sysfs attribute bootflag
375 * @dev: the &struct device
376 * @attr: device attributes
377 * @buf: buffer that contains new attribute value
378 * @count: size of buffer
379 */
380static ssize_t bootflag_set(struct device *dev, struct device_attribute *attr,
381 const char *buf, size_t count)
382{
383 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
384 struct cmd_ds_mesh_config cmd;
385 uint32_t datum;
386 int ret;
387
388 memset(&cmd, 0, sizeof(cmd));
389 ret = sscanf(buf, "%d", &datum);
390 if ((ret != 1) || (datum > 1))
391 return -EINVAL;
392
393 *((__le32 *)&cmd.data[0]) = cpu_to_le32(!!datum);
394 cmd.length = cpu_to_le16(sizeof(uint32_t));
395 ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
396 CMD_TYPE_MESH_SET_BOOTFLAG);
397 if (ret)
398 return ret;
399
400 return strlen(buf);
401}
402
403/**
404 * boottime_get - Get function for sysfs attribute boottime
405 * @dev: the &struct device
406 * @attr: device attributes
407 * @buf: buffer where data will be returned
408 */
409static ssize_t boottime_get(struct device *dev,
410 struct device_attribute *attr, char *buf)
411{
412 struct mrvl_mesh_defaults defs;
413 int ret;
414
415 ret = mesh_get_default_parameters(dev, &defs);
416
417 if (ret)
418 return ret;
419
420 return snprintf(buf, 12, "%d\n", defs.boottime);
421}
422
423/**
424 * boottime_set - Set function for sysfs attribute boottime
425 * @dev: the &struct device
426 * @attr: device attributes
427 * @buf: buffer that contains new attribute value
428 * @count: size of buffer
429 */
430static ssize_t boottime_set(struct device *dev,
431 struct device_attribute *attr, const char *buf, size_t count)
432{
433 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
434 struct cmd_ds_mesh_config cmd;
435 uint32_t datum;
436 int ret;
437
438 memset(&cmd, 0, sizeof(cmd));
439 ret = sscanf(buf, "%d", &datum);
440 if ((ret != 1) || (datum > 255))
441 return -EINVAL;
442
443 /* A too small boot time will result in the device booting into
444 * standalone (no-host) mode before the host can take control of it,
445 * so the change will be hard to revert. This may be a desired
446 * feature (e.g to configure a very fast boot time for devices that
447 * will not be attached to a host), but dangerous. So I'm enforcing a
448 * lower limit of 20 seconds: remove and recompile the driver if this
449 * does not work for you.
450 */
451 datum = (datum < 20) ? 20 : datum;
452 cmd.data[0] = datum;
453 cmd.length = cpu_to_le16(sizeof(uint8_t));
454 ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
455 CMD_TYPE_MESH_SET_BOOTTIME);
456 if (ret)
457 return ret;
458
459 return strlen(buf);
460}
461
462/**
463 * channel_get - Get function for sysfs attribute channel
464 * @dev: the &struct device
465 * @attr: device attributes
466 * @buf: buffer where data will be returned
467 */
468static ssize_t channel_get(struct device *dev,
469 struct device_attribute *attr, char *buf)
470{
471 struct mrvl_mesh_defaults defs;
472 int ret;
473
474 ret = mesh_get_default_parameters(dev, &defs);
475
476 if (ret)
477 return ret;
478
479 return snprintf(buf, 12, "%d\n", le16_to_cpu(defs.channel));
480}
481
482/**
483 * channel_set - Set function for sysfs attribute channel
484 * @dev: the &struct device
485 * @attr: device attributes
486 * @buf: buffer that contains new attribute value
487 * @count: size of buffer
488 */
489static ssize_t channel_set(struct device *dev, struct device_attribute *attr,
490 const char *buf, size_t count)
491{
492 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
493 struct cmd_ds_mesh_config cmd;
494 uint32_t datum;
495 int ret;
496
497 memset(&cmd, 0, sizeof(cmd));
498 ret = sscanf(buf, "%d", &datum);
499 if (ret != 1 || datum < 1 || datum > 11)
500 return -EINVAL;
501
502 *((__le16 *)&cmd.data[0]) = cpu_to_le16(datum);
503 cmd.length = cpu_to_le16(sizeof(uint16_t));
504 ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
505 CMD_TYPE_MESH_SET_DEF_CHANNEL);
506 if (ret)
507 return ret;
508
509 return strlen(buf);
510}
511
512/**
513 * mesh_id_get - Get function for sysfs attribute mesh_id
514 * @dev: the &struct device
515 * @attr: device attributes
516 * @buf: buffer where data will be returned
517 */
518static ssize_t mesh_id_get(struct device *dev, struct device_attribute *attr,
519 char *buf)
520{
521 struct mrvl_mesh_defaults defs;
522 int ret;
523
524 ret = mesh_get_default_parameters(dev, &defs);
525
526 if (ret)
527 return ret;
528
529 if (defs.meshie.val.mesh_id_len > IEEE80211_MAX_SSID_LEN) {
530 dev_err(dev, "inconsistent mesh ID length\n");
531 defs.meshie.val.mesh_id_len = IEEE80211_MAX_SSID_LEN;
532 }
533
534 memcpy(buf, defs.meshie.val.mesh_id, defs.meshie.val.mesh_id_len);
535 buf[defs.meshie.val.mesh_id_len] = '\n';
536 buf[defs.meshie.val.mesh_id_len + 1] = '\0';
537
538 return defs.meshie.val.mesh_id_len + 1;
539}
540
541/**
542 * mesh_id_set - Set function for sysfs attribute mesh_id
543 * @dev: the &struct device
544 * @attr: device attributes
545 * @buf: buffer that contains new attribute value
546 * @count: size of buffer
547 */
548static ssize_t mesh_id_set(struct device *dev, struct device_attribute *attr,
549 const char *buf, size_t count)
550{
551 struct cmd_ds_mesh_config cmd;
552 struct mrvl_mesh_defaults defs;
553 struct mrvl_meshie *ie;
554 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
555 int len;
556 int ret;
557
558 if (count < 2 || count > IEEE80211_MAX_SSID_LEN + 1)
559 return -EINVAL;
560
561 memset(&cmd, 0, sizeof(struct cmd_ds_mesh_config));
562 ie = (struct mrvl_meshie *) &cmd.data[0];
563
564 /* fetch all other Information Element parameters */
565 ret = mesh_get_default_parameters(dev, &defs);
566
567 cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie));
568
569 /* transfer IE elements */
570 memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie));
571
572 len = count - 1;
573 memcpy(ie->val.mesh_id, buf, len);
574 /* SSID len */
575 ie->val.mesh_id_len = len;
576 /* IE len */
577 ie->len = sizeof(struct mrvl_meshie_val) - IEEE80211_MAX_SSID_LEN + len;
578
579 ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
580 CMD_TYPE_MESH_SET_MESH_IE);
581 if (ret)
582 return ret;
583
584 return strlen(buf);
585}
586
587/**
588 * protocol_id_get - Get function for sysfs attribute protocol_id
589 * @dev: the &struct device
590 * @attr: device attributes
591 * @buf: buffer where data will be returned
592 */
593static ssize_t protocol_id_get(struct device *dev,
594 struct device_attribute *attr, char *buf)
595{
596 struct mrvl_mesh_defaults defs;
597 int ret;
598
599 ret = mesh_get_default_parameters(dev, &defs);
600
601 if (ret)
602 return ret;
603
604 return snprintf(buf, 5, "%d\n", defs.meshie.val.active_protocol_id);
605}
606
607/**
608 * protocol_id_set - Set function for sysfs attribute protocol_id
609 * @dev: the &struct device
610 * @attr: device attributes
611 * @buf: buffer that contains new attribute value
612 * @count: size of buffer
613 */
614static ssize_t protocol_id_set(struct device *dev,
615 struct device_attribute *attr, const char *buf, size_t count)
616{
617 struct cmd_ds_mesh_config cmd;
618 struct mrvl_mesh_defaults defs;
619 struct mrvl_meshie *ie;
620 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
621 uint32_t datum;
622 int ret;
623
624 memset(&cmd, 0, sizeof(cmd));
625 ret = sscanf(buf, "%d", &datum);
626 if ((ret != 1) || (datum > 255))
627 return -EINVAL;
628
629 /* fetch all other Information Element parameters */
630 ret = mesh_get_default_parameters(dev, &defs);
631
632 cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie));
633
634 /* transfer IE elements */
635 ie = (struct mrvl_meshie *) &cmd.data[0];
636 memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie));
637 /* update protocol id */
638 ie->val.active_protocol_id = datum;
639
640 ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
641 CMD_TYPE_MESH_SET_MESH_IE);
642 if (ret)
643 return ret;
644
645 return strlen(buf);
646}
647
648/**
649 * metric_id_get - Get function for sysfs attribute metric_id
650 * @dev: the &struct device
651 * @attr: device attributes
652 * @buf: buffer where data will be returned
653 */
654static ssize_t metric_id_get(struct device *dev,
655 struct device_attribute *attr, char *buf)
656{
657 struct mrvl_mesh_defaults defs;
658 int ret;
659
660 ret = mesh_get_default_parameters(dev, &defs);
661
662 if (ret)
663 return ret;
664
665 return snprintf(buf, 5, "%d\n", defs.meshie.val.active_metric_id);
666}
667
668/**
669 * metric_id_set - Set function for sysfs attribute metric_id
670 * @dev: the &struct device
671 * @attr: device attributes
672 * @buf: buffer that contains new attribute value
673 * @count: size of buffer
674 */
675static ssize_t metric_id_set(struct device *dev, struct device_attribute *attr,
676 const char *buf, size_t count)
677{
678 struct cmd_ds_mesh_config cmd;
679 struct mrvl_mesh_defaults defs;
680 struct mrvl_meshie *ie;
681 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
682 uint32_t datum;
683 int ret;
684
685 memset(&cmd, 0, sizeof(cmd));
686 ret = sscanf(buf, "%d", &datum);
687 if ((ret != 1) || (datum > 255))
688 return -EINVAL;
689
690 /* fetch all other Information Element parameters */
691 ret = mesh_get_default_parameters(dev, &defs);
692
693 cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie));
694
695 /* transfer IE elements */
696 ie = (struct mrvl_meshie *) &cmd.data[0];
697 memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie));
698 /* update metric id */
699 ie->val.active_metric_id = datum;
700
701 ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
702 CMD_TYPE_MESH_SET_MESH_IE);
703 if (ret)
704 return ret;
705
706 return strlen(buf);
707}
708
709/**
710 * capability_get - Get function for sysfs attribute capability
711 * @dev: the &struct device
712 * @attr: device attributes
713 * @buf: buffer where data will be returned
714 */
715static ssize_t capability_get(struct device *dev,
716 struct device_attribute *attr, char *buf)
717{
718 struct mrvl_mesh_defaults defs;
719 int ret;
720
721 ret = mesh_get_default_parameters(dev, &defs);
722
723 if (ret)
724 return ret;
725
726 return snprintf(buf, 5, "%d\n", defs.meshie.val.mesh_capability);
727}
728
729/**
730 * capability_set - Set function for sysfs attribute capability
731 * @dev: the &struct device
732 * @attr: device attributes
733 * @buf: buffer that contains new attribute value
734 * @count: size of buffer
735 */
736static ssize_t capability_set(struct device *dev, struct device_attribute *attr,
737 const char *buf, size_t count)
738{
739 struct cmd_ds_mesh_config cmd;
740 struct mrvl_mesh_defaults defs;
741 struct mrvl_meshie *ie;
742 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
743 uint32_t datum;
744 int ret;
745
746 memset(&cmd, 0, sizeof(cmd));
747 ret = sscanf(buf, "%d", &datum);
748 if ((ret != 1) || (datum > 255))
749 return -EINVAL;
750
751 /* fetch all other Information Element parameters */
752 ret = mesh_get_default_parameters(dev, &defs);
753
754 cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie));
755
756 /* transfer IE elements */
757 ie = (struct mrvl_meshie *) &cmd.data[0];
758 memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie));
759 /* update value */
760 ie->val.mesh_capability = datum;
761
762 ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET,
763 CMD_TYPE_MESH_SET_MESH_IE);
764 if (ret)
765 return ret;
766
767 return strlen(buf);
768}
769
770
771static DEVICE_ATTR(bootflag, 0644, bootflag_get, bootflag_set);
772static DEVICE_ATTR(boottime, 0644, boottime_get, boottime_set);
773static DEVICE_ATTR(channel, 0644, channel_get, channel_set);
774static DEVICE_ATTR(mesh_id, 0644, mesh_id_get, mesh_id_set);
775static DEVICE_ATTR(protocol_id, 0644, protocol_id_get, protocol_id_set);
776static DEVICE_ATTR(metric_id, 0644, metric_id_get, metric_id_set);
777static DEVICE_ATTR(capability, 0644, capability_get, capability_set);
778
779static struct attribute *boot_opts_attrs[] = {
780 &dev_attr_bootflag.attr,
781 &dev_attr_boottime.attr,
782 &dev_attr_channel.attr,
783 NULL
784};
785
786static const struct attribute_group boot_opts_group = {
787 .name = "boot_options",
788 .attrs = boot_opts_attrs,
789};
790
791static struct attribute *mesh_ie_attrs[] = {
792 &dev_attr_mesh_id.attr,
793 &dev_attr_protocol_id.attr,
794 &dev_attr_metric_id.attr,
795 &dev_attr_capability.attr,
796 NULL
797};
798
799static const struct attribute_group mesh_ie_group = {
800 .name = "mesh_ie",
801 .attrs = mesh_ie_attrs,
802};
803
804static void lbs_persist_config_init(struct net_device *dev)
805{
806 int ret;
807 ret = sysfs_create_group(&(dev->dev.kobj), &boot_opts_group);
808 if (ret)
809 pr_err("failed to create boot_opts_group.\n");
810
811 ret = sysfs_create_group(&(dev->dev.kobj), &mesh_ie_group);
812 if (ret)
813 pr_err("failed to create mesh_ie_group.\n");
814}
815
816static void lbs_persist_config_remove(struct net_device *dev)
817{
818 sysfs_remove_group(&(dev->dev.kobj), &boot_opts_group);
819 sysfs_remove_group(&(dev->dev.kobj), &mesh_ie_group);
820}
821
822
823/***************************************************************************
824 * Initializing and starting, stopping mesh
825 */
826
827/*
828 * Check mesh FW version and appropriately send the mesh start
829 * command
830 */
831int lbs_init_mesh(struct lbs_private *priv)
832{
833 int ret = 0;
834
835 /* Determine mesh_fw_ver from fwrelease and fwcapinfo */
836 /* 5.0.16p0 9.0.0.p0 is known to NOT support any mesh */
837 /* 5.110.22 have mesh command with 0xa3 command id */
838 /* 10.0.0.p0 FW brings in mesh config command with different id */
839 /* Check FW version MSB and initialize mesh_fw_ver */
840 if (MRVL_FW_MAJOR_REV(priv->fwrelease) == MRVL_FW_V5) {
841 /* Enable mesh, if supported, and work out which TLV it uses.
842 0x100 + 291 is an unofficial value used in 5.110.20.pXX
843 0x100 + 37 is the official value used in 5.110.21.pXX
844 but we check them in that order because 20.pXX doesn't
845 give an error -- it just silently fails. */
846
847 /* 5.110.20.pXX firmware will fail the command if the channel
848 doesn't match the existing channel. But only if the TLV
849 is correct. If the channel is wrong, _BOTH_ versions will
850 give an error to 0x100+291, and allow 0x100+37 to succeed.
851 It's just that 5.110.20.pXX will not have done anything
852 useful */
853
854 priv->mesh_tlv = TLV_TYPE_OLD_MESH_ID;
855 if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, 1)) {
856 priv->mesh_tlv = TLV_TYPE_MESH_ID;
857 if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, 1))
858 priv->mesh_tlv = 0;
859 }
860 } else
861 if ((MRVL_FW_MAJOR_REV(priv->fwrelease) >= MRVL_FW_V10) &&
862 (priv->fwcapinfo & MESH_CAPINFO_ENABLE_MASK)) {
863 /* 10.0.0.pXX new firmwares should succeed with TLV
864 * 0x100+37; Do not invoke command with old TLV.
865 */
866 priv->mesh_tlv = TLV_TYPE_MESH_ID;
867 if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, 1))
868 priv->mesh_tlv = 0;
869 }
870
871 /* Stop meshing until interface is brought up */
872 lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_STOP, 1);
873
874 return ret;
875}
876
877void 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
885int 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 */
905static 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 */
932static 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
961out:
962 return ret;
963}
964
965static 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 */
979static 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->ssid, "mesh");
1005 mesh_wdev->mesh_id_up_len = 4;
1006 ret = 1;
1007 }
1008
1009 mesh_wdev->netdev = mesh_dev;
1010
1011 mesh_dev->ml_priv = priv;
1012 mesh_dev->ieee80211_ptr = mesh_wdev;
1013 priv->mesh_dev = mesh_dev;
1014
1015 mesh_dev->netdev_ops = &mesh_netdev_ops;
1016 mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1017 eth_hw_addr_inherit(mesh_dev, priv->dev);
1018
1019 SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
1020
1021 mesh_dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1022 /* Register virtual mesh interface */
1023 ret = register_netdev(mesh_dev);
1024 if (ret) {
1025 pr_err("cannot register mshX virtual interface\n");
1026 goto err_free_netdev;
1027 }
1028
1029 ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1030 if (ret)
1031 goto err_unregister;
1032
1033 lbs_persist_config_init(mesh_dev);
1034
1035 /* Everything successful */
1036 ret = 0;
1037 goto done;
1038
1039err_unregister:
1040 unregister_netdev(mesh_dev);
1041
1042err_free_netdev:
1043 free_netdev(mesh_dev);
1044
1045err_free_wdev:
1046 kfree(mesh_wdev);
1047
1048done:
1049 return ret;
1050}
1051
1052void lbs_remove_mesh(struct lbs_private *priv)
1053{
1054 struct net_device *mesh_dev;
1055
1056 mesh_dev = priv->mesh_dev;
1057 if (!mesh_dev)
1058 return;
1059
1060 netif_stop_queue(mesh_dev);
1061 netif_carrier_off(mesh_dev);
1062 sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1063 lbs_persist_config_remove(mesh_dev);
1064 unregister_netdev(mesh_dev);
1065 priv->mesh_dev = NULL;
1066 kfree(mesh_dev->ieee80211_ptr);
1067 free_netdev(mesh_dev);
1068}
1069
1070
1071/***************************************************************************
1072 * Sending and receiving
1073 */
1074struct net_device *lbs_mesh_set_dev(struct lbs_private *priv,
1075 struct net_device *dev, struct rxpd *rxpd)
1076{
1077 if (priv->mesh_dev) {
1078 if (priv->mesh_tlv == TLV_TYPE_OLD_MESH_ID) {
1079 if (rxpd->rx_control & RxPD_MESH_FRAME)
1080 dev = priv->mesh_dev;
1081 } else if (priv->mesh_tlv == TLV_TYPE_MESH_ID) {
1082 if (rxpd->u.bss.bss_num == MESH_IFACE_ID)
1083 dev = priv->mesh_dev;
1084 }
1085 }
1086 return dev;
1087}
1088
1089
1090void lbs_mesh_set_txpd(struct lbs_private *priv,
1091 struct net_device *dev, struct txpd *txpd)
1092{
1093 if (dev == priv->mesh_dev) {
1094 if (priv->mesh_tlv == TLV_TYPE_OLD_MESH_ID)
1095 txpd->tx_control |= cpu_to_le32(TxPD_MESH_FRAME);
1096 else if (priv->mesh_tlv == TLV_TYPE_MESH_ID)
1097 txpd->u.bss.bss_num = MESH_IFACE_ID;
1098 }
1099}
1100
1101
1102/***************************************************************************
1103 * Ethtool related
1104 */
1105
1106static const char mesh_stat_strings[MESH_STATS_NUM][ETH_GSTRING_LEN] = {
1107 "drop_duplicate_bcast",
1108 "drop_ttl_zero",
1109 "drop_no_fwd_route",
1110 "drop_no_buffers",
1111 "fwded_unicast_cnt",
1112 "fwded_bcast_cnt",
1113 "drop_blind_table",
1114 "tx_failed_cnt"
1115};
1116
1117void lbs_mesh_ethtool_get_stats(struct net_device *dev,
1118 struct ethtool_stats *stats, uint64_t *data)
1119{
1120 struct lbs_private *priv = dev->ml_priv;
1121 struct cmd_ds_mesh_access mesh_access;
1122 int ret;
1123
1124 /* Get Mesh Statistics */
1125 ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_STATS, &mesh_access);
1126
1127 if (ret) {
1128 memset(data, 0, MESH_STATS_NUM*(sizeof(uint64_t)));
1129 return;
1130 }
1131
1132 priv->mstats.fwd_drop_rbt = le32_to_cpu(mesh_access.data[0]);
1133 priv->mstats.fwd_drop_ttl = le32_to_cpu(mesh_access.data[1]);
1134 priv->mstats.fwd_drop_noroute = le32_to_cpu(mesh_access.data[2]);
1135 priv->mstats.fwd_drop_nobuf = le32_to_cpu(mesh_access.data[3]);
1136 priv->mstats.fwd_unicast_cnt = le32_to_cpu(mesh_access.data[4]);
1137 priv->mstats.fwd_bcast_cnt = le32_to_cpu(mesh_access.data[5]);
1138 priv->mstats.drop_blind = le32_to_cpu(mesh_access.data[6]);
1139 priv->mstats.tx_failed_cnt = le32_to_cpu(mesh_access.data[7]);
1140
1141 data[0] = priv->mstats.fwd_drop_rbt;
1142 data[1] = priv->mstats.fwd_drop_ttl;
1143 data[2] = priv->mstats.fwd_drop_noroute;
1144 data[3] = priv->mstats.fwd_drop_nobuf;
1145 data[4] = priv->mstats.fwd_unicast_cnt;
1146 data[5] = priv->mstats.fwd_bcast_cnt;
1147 data[6] = priv->mstats.drop_blind;
1148 data[7] = priv->mstats.tx_failed_cnt;
1149}
1150
1151int lbs_mesh_ethtool_get_sset_count(struct net_device *dev, int sset)
1152{
1153 struct lbs_private *priv = dev->ml_priv;
1154
1155 if (sset == ETH_SS_STATS && dev == priv->mesh_dev)
1156 return MESH_STATS_NUM;
1157
1158 return -EOPNOTSUPP;
1159}
1160
1161void lbs_mesh_ethtool_get_strings(struct net_device *dev,
1162 uint32_t stringset, uint8_t *s)
1163{
1164 switch (stringset) {
1165 case ETH_SS_STATS:
1166 memcpy(s, mesh_stat_strings, sizeof(mesh_stat_strings));
1167 break;
1168 }
1169}