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
804
805/***************************************************************************
806 * Initializing and starting, stopping mesh
807 */
808
809/*
810 * Check mesh FW version and appropriately send the mesh start
811 * command
812 */
813void lbs_init_mesh(struct lbs_private *priv)
814{
815	/* Determine mesh_fw_ver from fwrelease and fwcapinfo */
816	/* 5.0.16p0 9.0.0.p0 is known to NOT support any mesh */
817	/* 5.110.22 have mesh command with 0xa3 command id */
818	/* 10.0.0.p0 FW brings in mesh config command with different id */
819	/* Check FW version MSB and initialize mesh_fw_ver */
820	if (MRVL_FW_MAJOR_REV(priv->fwrelease) == MRVL_FW_V5) {
821		/* Enable mesh, if supported, and work out which TLV it uses.
822		   0x100 + 291 is an unofficial value used in 5.110.20.pXX
823		   0x100 + 37 is the official value used in 5.110.21.pXX
824		   but we check them in that order because 20.pXX doesn't
825		   give an error -- it just silently fails. */
826
827		/* 5.110.20.pXX firmware will fail the command if the channel
828		   doesn't match the existing channel. But only if the TLV
829		   is correct. If the channel is wrong, _BOTH_ versions will
830		   give an error to 0x100+291, and allow 0x100+37 to succeed.
831		   It's just that 5.110.20.pXX will not have done anything
832		   useful */
833
834		priv->mesh_tlv = TLV_TYPE_OLD_MESH_ID;
835		if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, 1)) {
836			priv->mesh_tlv = TLV_TYPE_MESH_ID;
837			if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, 1))
838				priv->mesh_tlv = 0;
839		}
840	} else
841	if ((MRVL_FW_MAJOR_REV(priv->fwrelease) >= MRVL_FW_V10) &&
842		(priv->fwcapinfo & MESH_CAPINFO_ENABLE_MASK)) {
843		/* 10.0.0.pXX new firmwares should succeed with TLV
844		 * 0x100+37; Do not invoke command with old TLV.
845		 */
846		priv->mesh_tlv = TLV_TYPE_MESH_ID;
847		if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, 1))
848			priv->mesh_tlv = 0;
849	}
850
851	/* Stop meshing until interface is brought up */
852	lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_STOP, 1);
853}
854
855void lbs_start_mesh(struct lbs_private *priv)
856{
857	lbs_add_mesh(priv);
858
859	if (device_create_file(&priv->dev->dev, &dev_attr_lbs_mesh))
860		netdev_err(priv->dev, "cannot register lbs_mesh attribute\n");
861}
862
863int lbs_deinit_mesh(struct lbs_private *priv)
864{
865	struct net_device *dev = priv->dev;
866	int ret = 0;
867
868	if (priv->mesh_tlv) {
869		device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
870		ret = 1;
871	}
872
873	return ret;
874}
875
876
877/**
878 * lbs_mesh_stop - close the mshX interface
879 *
880 * @dev:	A pointer to &net_device structure
881 * returns:	0
882 */
883static int lbs_mesh_stop(struct net_device *dev)
884{
885	struct lbs_private *priv = dev->ml_priv;
886
887	lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_STOP,
888		lbs_mesh_get_channel(priv));
889
890	spin_lock_irq(&priv->driver_lock);
891
892	netif_stop_queue(dev);
893	netif_carrier_off(dev);
894
895	spin_unlock_irq(&priv->driver_lock);
896
897	lbs_update_mcast(priv);
898	if (!lbs_iface_active(priv))
899		lbs_stop_iface(priv);
900
901	return 0;
902}
903
904/**
905 * lbs_mesh_dev_open - open the mshX interface
906 *
907 * @dev:	A pointer to &net_device structure
908 * returns:	0 or -EBUSY if monitor mode active
909 */
910static int lbs_mesh_dev_open(struct net_device *dev)
911{
912	struct lbs_private *priv = dev->ml_priv;
913	int ret = 0;
914
915	if (!priv->iface_running) {
916		ret = lbs_start_iface(priv);
917		if (ret)
918			goto out;
919	}
920
921	spin_lock_irq(&priv->driver_lock);
922
923	if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR) {
924		ret = -EBUSY;
925		spin_unlock_irq(&priv->driver_lock);
926		goto out;
927	}
928
929	netif_carrier_on(dev);
930
931	if (!priv->tx_pending_len)
932		netif_wake_queue(dev);
933
934	spin_unlock_irq(&priv->driver_lock);
935
936	ret = lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
937		lbs_mesh_get_channel(priv));
938
939out:
940	return ret;
941}
942
943static const struct net_device_ops mesh_netdev_ops = {
944	.ndo_open		= lbs_mesh_dev_open,
945	.ndo_stop 		= lbs_mesh_stop,
946	.ndo_start_xmit		= lbs_hard_start_xmit,
947	.ndo_set_mac_address	= lbs_set_mac_address,
948	.ndo_set_rx_mode	= lbs_set_multicast_list,
949};
950
951/**
952 * lbs_add_mesh - add mshX interface
953 *
954 * @priv:	A pointer to the &struct lbs_private structure
955 * returns:	0 if successful, -X otherwise
956 */
957static int lbs_add_mesh(struct lbs_private *priv)
958{
959	struct net_device *mesh_dev = NULL;
960	struct wireless_dev *mesh_wdev;
961	int ret = 0;
962
963	/* Allocate a virtual mesh device */
964	mesh_wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
965	if (!mesh_wdev) {
966		lbs_deb_mesh("init mshX wireless device failed\n");
967		ret = -ENOMEM;
968		goto done;
969	}
970
971	mesh_dev = alloc_netdev(0, "msh%d", NET_NAME_UNKNOWN, ether_setup);
972	if (!mesh_dev) {
973		lbs_deb_mesh("init mshX device failed\n");
974		ret = -ENOMEM;
975		goto err_free_wdev;
976	}
977
978	mesh_wdev->iftype = NL80211_IFTYPE_MESH_POINT;
979	mesh_wdev->wiphy = priv->wdev->wiphy;
980
981	if (priv->mesh_tlv) {
982		sprintf(mesh_wdev->ssid, "mesh");
983		mesh_wdev->mesh_id_up_len = 4;
984	}
985
986	mesh_wdev->netdev = mesh_dev;
987
988	mesh_dev->ml_priv = priv;
989	mesh_dev->ieee80211_ptr = mesh_wdev;
990	priv->mesh_dev = mesh_dev;
991
992	mesh_dev->netdev_ops = &mesh_netdev_ops;
993	mesh_dev->ethtool_ops = &lbs_ethtool_ops;
994	eth_hw_addr_inherit(mesh_dev, priv->dev);
995
996	SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
997
998	mesh_dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
999	mesh_dev->sysfs_groups[0] = &lbs_mesh_attr_group;
1000	mesh_dev->sysfs_groups[1] = &boot_opts_group;
1001	mesh_dev->sysfs_groups[2] = &mesh_ie_group;
1002
1003	/* Register virtual mesh interface */
1004	ret = register_netdev(mesh_dev);
1005	if (ret) {
1006		pr_err("cannot register mshX virtual interface\n");
1007		goto err_free_netdev;
1008	}
1009
1010	/* Everything successful */
1011	ret = 0;
1012	goto done;
1013
1014err_free_netdev:
1015	free_netdev(mesh_dev);
1016
1017err_free_wdev:
1018	kfree(mesh_wdev);
1019
1020done:
1021	return ret;
1022}
1023
1024void lbs_remove_mesh(struct lbs_private *priv)
1025{
1026	struct net_device *mesh_dev;
1027
1028	mesh_dev = priv->mesh_dev;
1029	if (!mesh_dev)
1030		return;
1031
1032	netif_stop_queue(mesh_dev);
1033	netif_carrier_off(mesh_dev);
1034	unregister_netdev(mesh_dev);
1035	priv->mesh_dev = NULL;
1036	kfree(mesh_dev->ieee80211_ptr);
1037	free_netdev(mesh_dev);
1038}
1039
1040
1041/***************************************************************************
1042 * Sending and receiving
1043 */
1044struct net_device *lbs_mesh_set_dev(struct lbs_private *priv,
1045	struct net_device *dev, struct rxpd *rxpd)
1046{
1047	if (priv->mesh_dev) {
1048		if (priv->mesh_tlv == TLV_TYPE_OLD_MESH_ID) {
1049			if (rxpd->rx_control & RxPD_MESH_FRAME)
1050				dev = priv->mesh_dev;
1051		} else if (priv->mesh_tlv == TLV_TYPE_MESH_ID) {
1052			if (rxpd->u.bss.bss_num == MESH_IFACE_ID)
1053				dev = priv->mesh_dev;
1054		}
1055	}
1056	return dev;
1057}
1058
1059
1060void lbs_mesh_set_txpd(struct lbs_private *priv,
1061	struct net_device *dev, struct txpd *txpd)
1062{
1063	if (dev == priv->mesh_dev) {
1064		if (priv->mesh_tlv == TLV_TYPE_OLD_MESH_ID)
1065			txpd->tx_control |= cpu_to_le32(TxPD_MESH_FRAME);
1066		else if (priv->mesh_tlv == TLV_TYPE_MESH_ID)
1067			txpd->u.bss.bss_num = MESH_IFACE_ID;
1068	}
1069}
1070
1071
1072/***************************************************************************
1073 * Ethtool related
1074 */
1075
1076static const char mesh_stat_strings[MESH_STATS_NUM][ETH_GSTRING_LEN] = {
1077	"drop_duplicate_bcast",
1078	"drop_ttl_zero",
1079	"drop_no_fwd_route",
1080	"drop_no_buffers",
1081	"fwded_unicast_cnt",
1082	"fwded_bcast_cnt",
1083	"drop_blind_table",
1084	"tx_failed_cnt"
1085};
1086
1087void lbs_mesh_ethtool_get_stats(struct net_device *dev,
1088	struct ethtool_stats *stats, uint64_t *data)
1089{
1090	struct lbs_private *priv = dev->ml_priv;
1091	struct cmd_ds_mesh_access mesh_access;
1092	int ret;
1093
1094	/* Get Mesh Statistics */
1095	ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_STATS, &mesh_access);
1096
1097	if (ret) {
1098		memset(data, 0, MESH_STATS_NUM*(sizeof(uint64_t)));
1099		return;
1100	}
1101
1102	priv->mstats.fwd_drop_rbt = le32_to_cpu(mesh_access.data[0]);
1103	priv->mstats.fwd_drop_ttl = le32_to_cpu(mesh_access.data[1]);
1104	priv->mstats.fwd_drop_noroute = le32_to_cpu(mesh_access.data[2]);
1105	priv->mstats.fwd_drop_nobuf = le32_to_cpu(mesh_access.data[3]);
1106	priv->mstats.fwd_unicast_cnt = le32_to_cpu(mesh_access.data[4]);
1107	priv->mstats.fwd_bcast_cnt = le32_to_cpu(mesh_access.data[5]);
1108	priv->mstats.drop_blind = le32_to_cpu(mesh_access.data[6]);
1109	priv->mstats.tx_failed_cnt = le32_to_cpu(mesh_access.data[7]);
1110
1111	data[0] = priv->mstats.fwd_drop_rbt;
1112	data[1] = priv->mstats.fwd_drop_ttl;
1113	data[2] = priv->mstats.fwd_drop_noroute;
1114	data[3] = priv->mstats.fwd_drop_nobuf;
1115	data[4] = priv->mstats.fwd_unicast_cnt;
1116	data[5] = priv->mstats.fwd_bcast_cnt;
1117	data[6] = priv->mstats.drop_blind;
1118	data[7] = priv->mstats.tx_failed_cnt;
1119}
1120
1121int lbs_mesh_ethtool_get_sset_count(struct net_device *dev, int sset)
1122{
1123	struct lbs_private *priv = dev->ml_priv;
1124
1125	if (sset == ETH_SS_STATS && dev == priv->mesh_dev)
1126		return MESH_STATS_NUM;
1127
1128	return -EOPNOTSUPP;
1129}
1130
1131void lbs_mesh_ethtool_get_strings(struct net_device *dev,
1132	uint32_t stringset, uint8_t *s)
1133{
1134	switch (stringset) {
1135	case ETH_SS_STATS:
1136		memcpy(s, mesh_stat_strings, sizeof(mesh_stat_strings));
1137		break;
1138	}
1139}
1140