dhd_linux.c 26.7 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
/*
 * Copyright (c) 2010 Broadcom Corporation
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <linux/kernel.h>
#include <linux/etherdevice.h>
19
#include <linux/module.h>
20
21
22
23
24
25
26
27
#include <net/cfg80211.h>
#include <net/rtnetlink.h>
#include <brcmu_utils.h>
#include <brcmu_wifi.h>

#include "dhd.h"
#include "dhd_bus.h"
#include "dhd_dbg.h"
28
#include "fwil_types.h"
29
#include "p2p.h"
30
#include "wl_cfg80211.h"
31
#include "fwil.h"
32
#include "fwsignal.h"
33
#include "proto.h"
34
35

MODULE_AUTHOR("Broadcom Corporation");
Hante Meuleman's avatar
Hante Meuleman committed
36
MODULE_DESCRIPTION("Broadcom 802.11 wireless LAN fullmac driver.");
37
38
MODULE_LICENSE("Dual BSD/GPL");

39
#define MAX_WAIT_FOR_8021X_TX		50	/* msecs */
40

41
42
43
44
45
46
47
48
49
50
51
52
53
/* AMPDU rx reordering definitions */
#define BRCMF_RXREORDER_FLOWID_OFFSET		0
#define BRCMF_RXREORDER_MAXIDX_OFFSET		2
#define BRCMF_RXREORDER_FLAGS_OFFSET		4
#define BRCMF_RXREORDER_CURIDX_OFFSET		6
#define BRCMF_RXREORDER_EXPIDX_OFFSET		8

#define BRCMF_RXREORDER_DEL_FLOW		0x01
#define BRCMF_RXREORDER_FLUSH_ALL		0x02
#define BRCMF_RXREORDER_CURIDX_VALID		0x04
#define BRCMF_RXREORDER_EXPIDX_VALID		0x08
#define BRCMF_RXREORDER_NEW_HOLE		0x10

54
/* Error bits */
55
int brcmf_msg_level;
56
57
module_param_named(debug, brcmf_msg_level, int, S_IRUSR | S_IWUSR);
MODULE_PARM_DESC(debug, "level of debug output");
58

59
60
61
62
63
64
/* P2P0 enable */
static int brcmf_p2p_enable;
#ifdef CONFIG_BRCMDBG
module_param_named(p2pon, brcmf_p2p_enable, int, 0);
MODULE_PARM_DESC(p2pon, "enable p2p management functionality");
#endif
65
66
67
68

char *brcmf_ifname(struct brcmf_pub *drvr, int ifidx)
{
	if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) {
69
		brcmf_err("ifidx %d out of range\n", ifidx);
70
71
72
		return "<if_bad>";
	}

73
	if (drvr->iflist[ifidx] == NULL) {
74
		brcmf_err("null i/f %d\n", ifidx);
75
76
77
		return "<if_null>";
	}

78
79
	if (drvr->iflist[ifidx]->ndev)
		return drvr->iflist[ifidx]->ndev->name;
80
81
82
83
84
85

	return "<if_none>";
}

static void _brcmf_set_multicast_list(struct work_struct *work)
{
86
	struct brcmf_if *ifp;
87
88
	struct net_device *ndev;
	struct netdev_hw_addr *ha;
89
	u32 cmd_value, cnt;
90
91
	__le32 cnt_le;
	char *buf, *bufp;
92
93
	u32 buflen;
	s32 err;
94

95
	ifp = container_of(work, struct brcmf_if, multicast_work);
96

97
	brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
98

99
	ndev = ifp->ndev;
100
101

	/* Determine initial value of allmulti flag */
102
	cmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false;
103
104

	/* Send down the multicast list first. */
105
106
107
108
	cnt = netdev_mc_count(ndev);
	buflen = sizeof(cnt) + (cnt * ETH_ALEN);
	buf = kmalloc(buflen, GFP_ATOMIC);
	if (!buf)
109
		return;
110
	bufp = buf;
111
112

	cnt_le = cpu_to_le32(cnt);
113
	memcpy(bufp, &cnt_le, sizeof(cnt_le));
114
115
116
117
118
119
120
121
122
123
	bufp += sizeof(cnt_le);

	netdev_for_each_mc_addr(ha, ndev) {
		if (!cnt)
			break;
		memcpy(bufp, ha->addr, ETH_ALEN);
		bufp += ETH_ALEN;
		cnt--;
	}

124
125
	err = brcmf_fil_iovar_data_set(ifp, "mcast_list", buf, buflen);
	if (err < 0) {
126
		brcmf_err("Setting mcast_list failed, %d\n", err);
127
		cmd_value = cnt ? true : cmd_value;
128
129
130
131
	}

	kfree(buf);

132
133
	/*
	 * Now send the allmulti setting.  This is based on the setting in the
134
135
136
	 * net_device flags, but might be modified above to be turned on if we
	 * were trying to set some addresses and dongle rejected it...
	 */
137
138
	err = brcmf_fil_iovar_int_set(ifp, "allmulti", cmd_value);
	if (err < 0)
139
		brcmf_err("Setting allmulti failed, %d\n", err);
140
141
142
143
144

	/*Finally, pick up the PROMISC flag */
	cmd_value = (ndev->flags & IFF_PROMISC) ? true : false;
	err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PROMISC, cmd_value);
	if (err < 0)
145
		brcmf_err("Setting BRCMF_C_SET_PROMISC failed, %d\n",
146
			  err);
147
148
149
150
151
}

static void
_brcmf_set_mac_address(struct work_struct *work)
{
152
153
	struct brcmf_if *ifp;
	s32 err;
154

155
	ifp = container_of(work, struct brcmf_if, setmacaddr_work);
156

157
	brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
158

159
	err = brcmf_fil_iovar_data_set(ifp, "cur_etheraddr", ifp->mac_addr,
160
161
				       ETH_ALEN);
	if (err < 0) {
162
		brcmf_err("Setting cur_etheraddr failed, %d\n", err);
163
164
	} else {
		brcmf_dbg(TRACE, "MAC address updated to %pM\n",
165
166
			  ifp->mac_addr);
		memcpy(ifp->ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
167
	}
168
169
170
171
}

static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr)
{
172
	struct brcmf_if *ifp = netdev_priv(ndev);
173
174
	struct sockaddr *sa = (struct sockaddr *)addr;

175
176
	memcpy(&ifp->mac_addr, sa->sa_data, ETH_ALEN);
	schedule_work(&ifp->setmacaddr_work);
177
178
179
180
181
	return 0;
}

static void brcmf_netdev_set_multicast_list(struct net_device *ndev)
{
182
	struct brcmf_if *ifp = netdev_priv(ndev);
183

184
	schedule_work(&ifp->multicast_work);
185
186
}

187
188
static netdev_tx_t brcmf_netdev_start_xmit(struct sk_buff *skb,
					   struct net_device *ndev)
189
190
{
	int ret;
191
	struct brcmf_if *ifp = netdev_priv(ndev);
192
	struct brcmf_pub *drvr = ifp->drvr;
193
	struct ethhdr *eh;
194

195
	brcmf_dbg(DATA, "Enter, idx=%d\n", ifp->bssidx);
196

197
198
199
	/* Can the device send data? */
	if (drvr->bus_if->state != BRCMF_BUS_DATA) {
		brcmf_err("xmit rejected state=%d\n", drvr->bus_if->state);
200
		netif_stop_queue(ndev);
201
202
203
		dev_kfree_skb(skb);
		ret = -ENODEV;
		goto done;
204
205
	}

206
207
	if (!drvr->iflist[ifp->bssidx]) {
		brcmf_err("bad ifidx %d\n", ifp->bssidx);
208
		netif_stop_queue(ndev);
209
210
211
		dev_kfree_skb(skb);
		ret = -ENODEV;
		goto done;
212
213
214
	}

	/* Make sure there's enough room for any header */
215
	if (skb_headroom(skb) < drvr->hdrlen) {
216
217
218
		struct sk_buff *skb2;

		brcmf_dbg(INFO, "%s: insufficient headroom\n",
219
			  brcmf_ifname(drvr, ifp->bssidx));
220
		drvr->bus_if->tx_realloc++;
221
		skb2 = skb_realloc_headroom(skb, drvr->hdrlen);
222
223
224
		dev_kfree_skb(skb);
		skb = skb2;
		if (skb == NULL) {
225
			brcmf_err("%s: skb_realloc_headroom failed\n",
226
				  brcmf_ifname(drvr, ifp->bssidx));
227
228
229
230
231
			ret = -ENOMEM;
			goto done;
		}
	}

232
233
234
235
236
	/* validate length for ether packet */
	if (skb->len < sizeof(*eh)) {
		ret = -EINVAL;
		dev_kfree_skb(skb);
		goto done;
237
238
	}

239
	ret = brcmf_fws_process_skb(ifp, skb);
240
241

done:
242
243
244
245
246
247
	if (ret) {
		ifp->stats.tx_dropped++;
	} else {
		ifp->stats.tx_packets++;
		ifp->stats.tx_bytes += skb->len;
	}
248
249

	/* Return ok: we always eat the packet */
250
	return NETDEV_TX_OK;
251
252
}

253
254
255
void brcmf_txflowblock_if(struct brcmf_if *ifp,
			  enum brcmf_netif_stop_reason reason, bool state)
{
256
257
	unsigned long flags;

258
	if (!ifp || !ifp->ndev)
259
260
261
262
		return;

	brcmf_dbg(TRACE, "enter: idx=%d stop=0x%X reason=%d state=%d\n",
		  ifp->bssidx, ifp->netif_stop, reason, state);
263
264

	spin_lock_irqsave(&ifp->netif_stop_lock, flags);
265
266
267
268
269
270
271
272
273
	if (state) {
		if (!ifp->netif_stop)
			netif_stop_queue(ifp->ndev);
		ifp->netif_stop |= reason;
	} else {
		ifp->netif_stop &= ~reason;
		if (!ifp->netif_stop)
			netif_wake_queue(ifp->ndev);
	}
274
	spin_unlock_irqrestore(&ifp->netif_stop_lock, flags);
275
276
}

277
void brcmf_txflowblock(struct device *dev, bool state)
278
{
279
280
	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
	struct brcmf_pub *drvr = bus_if->drvr;
281
282
283

	brcmf_dbg(TRACE, "Enter\n");

284
	brcmf_fws_bus_blocked(drvr, state);
285
286
}

287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
static void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb)
{
	skb->dev = ifp->ndev;
	skb->protocol = eth_type_trans(skb, skb->dev);

	if (skb->pkt_type == PACKET_MULTICAST)
		ifp->stats.multicast++;

	/* Process special event packets */
	brcmf_fweh_process_skb(ifp->drvr, skb);

	if (!(ifp->ndev->flags & IFF_UP)) {
		brcmu_pkt_buf_free_skb(skb);
		return;
	}

	ifp->stats.rx_bytes += skb->len;
	ifp->stats.rx_packets++;

	brcmf_dbg(DATA, "rx proto=0x%X\n", ntohs(skb->protocol));
	if (in_interrupt())
		netif_rx(skb);
	else
		/* If the receive is not processed inside an ISR,
		 * the softirqd must be woken explicitly to service
		 * the NET_RX_SOFTIRQ.  This is handled by netif_rx_ni().
		 */
		netif_rx_ni(skb);
}

static void brcmf_rxreorder_get_skb_list(struct brcmf_ampdu_rx_reorder *rfi,
					 u8 start, u8 end,
					 struct sk_buff_head *skb_list)
{
	/* initialize return list */
	__skb_queue_head_init(skb_list);

	if (rfi->pend_pkts == 0) {
		brcmf_dbg(INFO, "no packets in reorder queue\n");
		return;
	}

	do {
		if (rfi->pktslots[start]) {
			__skb_queue_tail(skb_list, rfi->pktslots[start]);
			rfi->pktslots[start] = NULL;
		}
		start++;
		if (start > rfi->max_idx)
			start = 0;
	} while (start != end);
	rfi->pend_pkts -= skb_queue_len(skb_list);
}

static void brcmf_rxreorder_process_info(struct brcmf_if *ifp, u8 *reorder_data,
					 struct sk_buff *pkt)
{
	u8 flow_id, max_idx, cur_idx, exp_idx, end_idx;
	struct brcmf_ampdu_rx_reorder *rfi;
	struct sk_buff_head reorder_list;
	struct sk_buff *pnext;
	u8 flags;
	u32 buf_size;

	flow_id = reorder_data[BRCMF_RXREORDER_FLOWID_OFFSET];
	flags = reorder_data[BRCMF_RXREORDER_FLAGS_OFFSET];

	/* validate flags and flow id */
	if (flags == 0xFF) {
		brcmf_err("invalid flags...so ignore this packet\n");
		brcmf_netif_rx(ifp, pkt);
		return;
	}

	rfi = ifp->drvr->reorder_flows[flow_id];
	if (flags & BRCMF_RXREORDER_DEL_FLOW) {
		brcmf_dbg(INFO, "flow-%d: delete\n",
			  flow_id);

		if (rfi == NULL) {
			brcmf_dbg(INFO, "received flags to cleanup, but no flow (%d) yet\n",
				  flow_id);
			brcmf_netif_rx(ifp, pkt);
			return;
		}

		brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, rfi->exp_idx,
					     &reorder_list);
		/* add the last packet */
		__skb_queue_tail(&reorder_list, pkt);
		kfree(rfi);
		ifp->drvr->reorder_flows[flow_id] = NULL;
		goto netif_rx;
	}
	/* from here on we need a flow reorder instance */
	if (rfi == NULL) {
		buf_size = sizeof(*rfi);
		max_idx = reorder_data[BRCMF_RXREORDER_MAXIDX_OFFSET];

		buf_size += (max_idx + 1) * sizeof(pkt);

		/* allocate space for flow reorder info */
		brcmf_dbg(INFO, "flow-%d: start, maxidx %d\n",
			  flow_id, max_idx);
		rfi = kzalloc(buf_size, GFP_ATOMIC);
		if (rfi == NULL) {
			brcmf_err("failed to alloc buffer\n");
			brcmf_netif_rx(ifp, pkt);
			return;
		}

		ifp->drvr->reorder_flows[flow_id] = rfi;
		rfi->pktslots = (struct sk_buff **)(rfi+1);
		rfi->max_idx = max_idx;
	}
	if (flags & BRCMF_RXREORDER_NEW_HOLE)  {
		if (rfi->pend_pkts) {
			brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx,
						     rfi->exp_idx,
						     &reorder_list);
			WARN_ON(rfi->pend_pkts);
		} else {
			__skb_queue_head_init(&reorder_list);
		}
		rfi->cur_idx = reorder_data[BRCMF_RXREORDER_CURIDX_OFFSET];
		rfi->exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET];
		rfi->max_idx = reorder_data[BRCMF_RXREORDER_MAXIDX_OFFSET];
		rfi->pktslots[rfi->cur_idx] = pkt;
		rfi->pend_pkts++;
		brcmf_dbg(DATA, "flow-%d: new hole %d (%d), pending %d\n",
			  flow_id, rfi->cur_idx, rfi->exp_idx, rfi->pend_pkts);
	} else if (flags & BRCMF_RXREORDER_CURIDX_VALID) {
		cur_idx = reorder_data[BRCMF_RXREORDER_CURIDX_OFFSET];
		exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET];

		if ((exp_idx == rfi->exp_idx) && (cur_idx != rfi->exp_idx)) {
			/* still in the current hole */
			/* enqueue the current on the buffer chain */
			if (rfi->pktslots[cur_idx] != NULL) {
				brcmf_dbg(INFO, "HOLE: ERROR buffer pending..free it\n");
				brcmu_pkt_buf_free_skb(rfi->pktslots[cur_idx]);
				rfi->pktslots[cur_idx] = NULL;
			}
			rfi->pktslots[cur_idx] = pkt;
			rfi->pend_pkts++;
			rfi->cur_idx = cur_idx;
			brcmf_dbg(DATA, "flow-%d: store pkt %d (%d), pending %d\n",
				  flow_id, cur_idx, exp_idx, rfi->pend_pkts);

			/* can return now as there is no reorder
			 * list to process.
			 */
			return;
		}
		if (rfi->exp_idx == cur_idx) {
			if (rfi->pktslots[cur_idx] != NULL) {
				brcmf_dbg(INFO, "error buffer pending..free it\n");
				brcmu_pkt_buf_free_skb(rfi->pktslots[cur_idx]);
				rfi->pktslots[cur_idx] = NULL;
			}
			rfi->pktslots[cur_idx] = pkt;
			rfi->pend_pkts++;

			/* got the expected one. flush from current to expected
			 * and update expected
			 */
			brcmf_dbg(DATA, "flow-%d: expected %d (%d), pending %d\n",
				  flow_id, cur_idx, exp_idx, rfi->pend_pkts);

			rfi->cur_idx = cur_idx;
			rfi->exp_idx = exp_idx;

			brcmf_rxreorder_get_skb_list(rfi, cur_idx, exp_idx,
						     &reorder_list);
			brcmf_dbg(DATA, "flow-%d: freeing buffers %d, pending %d\n",
				  flow_id, skb_queue_len(&reorder_list),
				  rfi->pend_pkts);
		} else {
			u8 end_idx;

			brcmf_dbg(DATA, "flow-%d (0x%x): both moved, old %d/%d, new %d/%d\n",
				  flow_id, flags, rfi->cur_idx, rfi->exp_idx,
				  cur_idx, exp_idx);
			if (flags & BRCMF_RXREORDER_FLUSH_ALL)
				end_idx = rfi->exp_idx;
			else
				end_idx = exp_idx;

			/* flush pkts first */
			brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, end_idx,
						     &reorder_list);

			if (exp_idx == ((cur_idx + 1) % (rfi->max_idx + 1))) {
				__skb_queue_tail(&reorder_list, pkt);
			} else {
				rfi->pktslots[cur_idx] = pkt;
				rfi->pend_pkts++;
			}
			rfi->exp_idx = exp_idx;
			rfi->cur_idx = cur_idx;
		}
	} else {
		/* explicity window move updating the expected index */
		exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET];

		brcmf_dbg(DATA, "flow-%d (0x%x): change expected: %d -> %d\n",
			  flow_id, flags, rfi->exp_idx, exp_idx);
		if (flags & BRCMF_RXREORDER_FLUSH_ALL)
			end_idx =  rfi->exp_idx;
		else
			end_idx =  exp_idx;

		brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, end_idx,
					     &reorder_list);
		__skb_queue_tail(&reorder_list, pkt);
		/* set the new expected idx */
		rfi->exp_idx = exp_idx;
	}
netif_rx:
	skb_queue_walk_safe(&reorder_list, pkt, pnext) {
		__skb_unlink(pkt, &reorder_list);
		brcmf_netif_rx(ifp, pkt);
	}
}

512
void brcmf_rx_frame(struct device *dev, struct sk_buff *skb)
513
514
{
	struct brcmf_if *ifp;
515
516
	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
	struct brcmf_pub *drvr = bus_if->drvr;
517
	struct brcmf_skb_reorder_data *rd;
518
519
	u8 ifidx;
	int ret;
520

521
	brcmf_dbg(DATA, "Enter: %s: rxp=%p\n", dev_name(dev), skb);
522

523
524
525
	/* process and remove protocol-specific header */
	ret = brcmf_proto_hdrpull(drvr, true, &ifidx, skb);
	ifp = drvr->iflist[ifidx];
526

527
528
529
530
531
	if (ret || !ifp || !ifp->ndev) {
		if ((ret != -ENODATA) && ifp)
			ifp->stats.rx_errors++;
		brcmu_pkt_buf_free_skb(skb);
		return;
532
	}
533
534
535
536
537
538

	rd = (struct brcmf_skb_reorder_data *)skb->cb;
	if (rd->reorder)
		brcmf_rxreorder_process_info(ifp, rd->reorder, skb);
	else
		brcmf_netif_rx(ifp, skb);
539
540
}

541
void brcmf_txfinalize(struct brcmf_pub *drvr, struct sk_buff *txp, u8 ifidx,
542
		      bool success)
543
{
544
	struct brcmf_if *ifp;
545
546
547
	struct ethhdr *eh;
	u16 type;

548
549
	ifp = drvr->iflist[ifidx];
	if (!ifp)
550
		goto done;
551

552
553
	eh = (struct ethhdr *)(txp->data);
	type = ntohs(eh->h_proto);
554

555
556
557
558
	if (type == ETH_P_PAE) {
		atomic_dec(&ifp->pend_8021x_cnt);
		if (waitqueue_active(&ifp->pend_8021x_wait))
			wake_up(&ifp->pend_8021x_wait);
559
	}
560

561
562
	if (!success)
		ifp->stats.tx_errors++;
563
564
done:
	brcmu_pkt_buf_free_skb(txp);
565
}
566

567
568
569
570
void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success)
{
	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
	struct brcmf_pub *drvr = bus_if->drvr;
571
	u8 ifidx;
572

573
574
575
576
577
	/* await txstatus signal for firmware if active */
	if (brcmf_fws_fc_active(drvr->fws)) {
		if (!success)
			brcmf_fws_bustxfail(drvr->fws, txp);
	} else {
578
579
580
581
		if (brcmf_proto_hdrpull(drvr, false, &ifidx, txp))
			brcmu_pkt_buf_free_skb(txp);
		else
			brcmf_txfinalize(drvr, txp, ifidx, success);
582
	}
583
584
585
586
}

static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev)
{
587
	struct brcmf_if *ifp = netdev_priv(ndev);
588

589
	brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
590
591
592
593
594
595
596

	return &ifp->stats;
}

static void brcmf_ethtool_get_drvinfo(struct net_device *ndev,
				    struct ethtool_drvinfo *info)
{
597
	struct brcmf_if *ifp = netdev_priv(ndev);
598
	struct brcmf_pub *drvr = ifp->drvr;
599

600
	strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
601
602
	snprintf(info->version, sizeof(info->version), "n/a");
	strlcpy(info->fw_version, drvr->fwver, sizeof(info->fw_version));
603
604
	strlcpy(info->bus_info, dev_name(drvr->bus_if->dev),
		sizeof(info->bus_info));
605
606
}

607
608
static const struct ethtool_ops brcmf_ethtool_ops = {
	.get_drvinfo = brcmf_ethtool_get_drvinfo,
609
610
611
612
};

static int brcmf_netdev_stop(struct net_device *ndev)
{
613
	struct brcmf_if *ifp = netdev_priv(ndev);
614

615
	brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
616

617
	brcmf_cfg80211_down(ndev);
618

619
620
621
622
623
624
625
626
	/* Set state and stop OS transmissions */
	netif_stop_queue(ndev);

	return 0;
}

static int brcmf_netdev_open(struct net_device *ndev)
{
627
	struct brcmf_if *ifp = netdev_priv(ndev);
628
	struct brcmf_pub *drvr = ifp->drvr;
629
	struct brcmf_bus *bus_if = drvr->bus_if;
630
631
	u32 toe_ol;

632
	brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
633

634
635
	/* If bus is not ready, can't continue */
	if (bus_if->state != BRCMF_BUS_DATA) {
636
		brcmf_err("failed bus is not ready\n");
637
638
		return -EAGAIN;
	}
639

640
	atomic_set(&ifp->pend_8021x_cnt, 0);
641

642
643
644
	/* Get current TOE mode from dongle */
	if (brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_ol) >= 0
	    && (toe_ol & TOE_TX_CSUM_OL) != 0)
645
		ndev->features |= NETIF_F_IP_CSUM;
646
	else
647
		ndev->features &= ~NETIF_F_IP_CSUM;
648

649
	if (brcmf_cfg80211_up(ndev)) {
650
		brcmf_err("failed to bring up cfg80211\n");
651
		return -EIO;
652
653
	}

654
655
656
	/* Allow transmit calls */
	netif_start_queue(ndev);
	return 0;
657
658
}

659
660
661
662
663
664
665
666
667
static const struct net_device_ops brcmf_netdev_ops_pri = {
	.ndo_open = brcmf_netdev_open,
	.ndo_stop = brcmf_netdev_stop,
	.ndo_get_stats = brcmf_netdev_get_stats,
	.ndo_start_xmit = brcmf_netdev_start_xmit,
	.ndo_set_mac_address = brcmf_netdev_set_mac_address,
	.ndo_set_rx_mode = brcmf_netdev_set_multicast_list
};

668
int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked)
669
{
670
	struct brcmf_pub *drvr = ifp->drvr;
671
	struct net_device *ndev;
672
	s32 err;
673

674
	brcmf_dbg(TRACE, "Enter, idx=%d mac=%pM\n", ifp->bssidx,
675
		  ifp->mac_addr);
676
	ndev = ifp->ndev;
677

678
	/* set appropriate operations */
679
	ndev->netdev_ops = &brcmf_netdev_ops_pri;
680

681
	ndev->hard_header_len += drvr->hdrlen;
682
683
684
685
686
	ndev->ethtool_ops = &brcmf_ethtool_ops;

	drvr->rxsz = ndev->mtu + ndev->hard_header_len +
			      drvr->hdrlen;

687
688
	/* set the mac address */
	memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
689

690
691
692
	INIT_WORK(&ifp->setmacaddr_work, _brcmf_set_mac_address);
	INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list);

693
694
695
696
697
	if (rtnl_locked)
		err = register_netdevice(ndev);
	else
		err = register_netdev(ndev);
	if (err != 0) {
698
		brcmf_err("couldn't register the net device\n");
699
700
701
702
703
		goto fail;
	}

	brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);

704
	ndev->destructor = brcmf_cfg80211_free_netdev;
705
706
707
	return 0;

fail:
708
	drvr->iflist[ifp->bssidx] = NULL;
709
	ndev->netdev_ops = NULL;
710
	free_netdev(ndev);
711
712
713
	return -EBADE;
}

714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
static int brcmf_net_p2p_open(struct net_device *ndev)
{
	brcmf_dbg(TRACE, "Enter\n");

	return brcmf_cfg80211_up(ndev);
}

static int brcmf_net_p2p_stop(struct net_device *ndev)
{
	brcmf_dbg(TRACE, "Enter\n");

	return brcmf_cfg80211_down(ndev);
}

static netdev_tx_t brcmf_net_p2p_start_xmit(struct sk_buff *skb,
					    struct net_device *ndev)
{
	if (skb)
		dev_kfree_skb_any(skb);

	return NETDEV_TX_OK;
}

static const struct net_device_ops brcmf_netdev_ops_p2p = {
	.ndo_open = brcmf_net_p2p_open,
	.ndo_stop = brcmf_net_p2p_stop,
	.ndo_start_xmit = brcmf_net_p2p_start_xmit
};

static int brcmf_net_p2p_attach(struct brcmf_if *ifp)
{
	struct net_device *ndev;

	brcmf_dbg(TRACE, "Enter, idx=%d mac=%pM\n", ifp->bssidx,
		  ifp->mac_addr);
	ndev = ifp->ndev;

	ndev->netdev_ops = &brcmf_netdev_ops_p2p;

	/* set the mac address */
	memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);

	if (register_netdev(ndev) != 0) {
		brcmf_err("couldn't register the p2p net device\n");
		goto fail;
	}

	brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);

	return 0;

fail:
766
767
768
	ifp->drvr->iflist[ifp->bssidx] = NULL;
	ndev->netdev_ops = NULL;
	free_netdev(ndev);
769
770
771
	return -EBADE;
}

772
773
struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bssidx, s32 ifidx,
			      char *name, u8 *mac_addr)
774
775
{
	struct brcmf_if *ifp;
776
	struct net_device *ndev;
777

778
	brcmf_dbg(TRACE, "Enter, idx=%d, ifidx=%d\n", bssidx, ifidx);
779

780
	ifp = drvr->iflist[bssidx];
781
782
783
784
785
	/*
	 * Delete the existing interface before overwriting it
	 * in case we missed the BRCMF_E_IF_DEL event.
	 */
	if (ifp) {
786
		brcmf_err("ERROR: netdev:%s already exists\n",
787
			  ifp->ndev->name);
788
789
790
791
		if (ifidx) {
			netif_stop_queue(ifp->ndev);
			unregister_netdev(ifp->ndev);
			free_netdev(ifp->ndev);
792
			drvr->iflist[bssidx] = NULL;
793
		} else {
794
			brcmf_err("ignore IF event\n");
795
796
			return ERR_PTR(-EINVAL);
		}
797
	}
798

799
800
801
802
	if (!brcmf_p2p_enable && bssidx == 1) {
		/* this is P2P_DEVICE interface */
		brcmf_dbg(INFO, "allocate non-netdev interface\n");
		ifp = kzalloc(sizeof(*ifp), GFP_KERNEL);
803
804
		if (!ifp)
			return ERR_PTR(-ENOMEM);
805
806
807
808
	} else {
		brcmf_dbg(INFO, "allocate netdev interface\n");
		/* Allocate netdev, including space for private structure */
		ndev = alloc_netdev(sizeof(*ifp), name, ether_setup);
809
		if (!ndev)
810
811
812
813
			return ERR_PTR(-ENOMEM);

		ifp = netdev_priv(ndev);
		ifp->ndev = ndev;
814
	}
815

816
	ifp->drvr = drvr;
817
818
	drvr->iflist[bssidx] = ifp;
	ifp->ifidx = ifidx;
819
	ifp->bssidx = bssidx;
820

821
	init_waitqueue_head(&ifp->pend_8021x_wait);
822
	spin_lock_init(&ifp->netif_stop_lock);
823

824
825
	if (mac_addr != NULL)
		memcpy(ifp->mac_addr, mac_addr, ETH_ALEN);
826

827
	brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n",
828
		  current->pid, name, ifp->mac_addr);
829

830
	return ifp;
831
832
}

833
void brcmf_del_if(struct brcmf_pub *drvr, s32 bssidx)
834
835
836
{
	struct brcmf_if *ifp;

837
	ifp = drvr->iflist[bssidx];
838
	drvr->iflist[bssidx] = NULL;
839
	if (!ifp) {
840
		brcmf_err("Null interface, idx=%d\n", bssidx);
841
842
		return;
	}
843
	brcmf_dbg(TRACE, "Enter, idx=%d, ifidx=%d\n", bssidx, ifp->ifidx);
844
	if (ifp->ndev) {
845
		if (bssidx == 0) {
846
847
848
849
850
851
852
853
854
			if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
				rtnl_lock();
				brcmf_netdev_stop(ifp->ndev);
				rtnl_unlock();
			}
		} else {
			netif_stop_queue(ifp->ndev);
		}

855
856
857
858
		if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
			cancel_work_sync(&ifp->setmacaddr_work);
			cancel_work_sync(&ifp->multicast_work);
		}
859
		/* unregister will take care of freeing it */
860
		unregister_netdev(ifp->ndev);
861
862
	} else {
		kfree(ifp);
863
864
865
	}
}

866
int brcmf_attach(struct device *dev)
867
{
868
	struct brcmf_pub *drvr = NULL;
869
	int ret = 0;
870
871
872
873

	brcmf_dbg(TRACE, "Enter\n");

	/* Allocate primary brcmf_info */
874
875
	drvr = kzalloc(sizeof(struct brcmf_pub), GFP_ATOMIC);
	if (!drvr)
876
		return -ENOMEM;
877

878
	mutex_init(&drvr->proto_block);
879
880

	/* Link to bus module */
881
	drvr->hdrlen = 0;
882
	drvr->bus_if = dev_get_drvdata(dev);
883
	drvr->bus_if->drvr = drvr;
884

885
886
887
	/* create device debugfs folder */
	brcmf_debugfs_attach(drvr);

888
	/* Attach and link in the protocol */
889
890
	ret = brcmf_proto_attach(drvr);
	if (ret != 0) {
891
		brcmf_err("brcmf_prot_attach failed\n");
892
893
894
		goto fail;
	}

895
896
897
	/* attach firmware event handler */
	brcmf_fweh_attach(drvr);

898
	return ret;
899
900

fail:
901
	brcmf_detach(dev);
902

903
	return ret;
904
905
}

906
int brcmf_bus_start(struct device *dev)
907
908
{
	int ret = -1;
909
910
	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
	struct brcmf_pub *drvr = bus_if->drvr;
911
	struct brcmf_if *ifp;
912
	struct brcmf_if *p2p_ifp;
913
914
915
916

	brcmf_dbg(TRACE, "\n");

	/* Bring up the bus */
917
	ret = brcmf_bus_init(bus_if);
918
	if (ret != 0) {
919
		brcmf_err("brcmf_sdbrcm_bus_init failed %d\n", ret);
920
921
922
		return ret;
	}

923
	/* add primary networking interface */
924
	ifp = brcmf_add_if(drvr, 0, 0, "wlan%d", NULL);
925
926
927
	if (IS_ERR(ifp))
		return PTR_ERR(ifp);

928
929
930
931
932
933
934
	if (brcmf_p2p_enable)
		p2p_ifp = brcmf_add_if(drvr, 1, 0, "p2p%d", NULL);
	else
		p2p_ifp = NULL;
	if (IS_ERR(p2p_ifp))
		p2p_ifp = NULL;

935
	/* signal bus ready */
936
	brcmf_bus_change_state(bus_if, BRCMF_BUS_DATA);
937
938
939

	/* Bus is ready, do any initialization */
	ret = brcmf_c_preinit_dcmds(ifp);
940
	if (ret < 0)
941
		goto fail;
942

943
944
945
946
	ret = brcmf_fws_init(drvr);
	if (ret < 0)
		goto fail;

947
	brcmf_fws_add_interface(ifp);
948

949
	drvr->config = brcmf_cfg80211_attach(drvr, bus_if->dev);
950
951
952
953
	if (drvr->config == NULL) {
		ret = -ENOMEM;
		goto fail;
	}
954

955
956
957
958
	ret = brcmf_fweh_activate_events(ifp);
	if (ret < 0)
		goto fail;

959
	ret = brcmf_net_attach(ifp, false);
960
fail:
961
	if (ret < 0) {
962
		brcmf_err("failed: %d\n", ret);
963
		brcmf_cfg80211_detach(drvr->config);
964
965
		if (drvr->fws) {
			brcmf_fws_del_interface(ifp);
966
			brcmf_fws_deinit(drvr);
967
		}
968
969
970
971
		if (drvr->iflist[0]) {
			free_netdev(ifp->ndev);
			drvr->iflist[0] = NULL;
		}
972
973
974
975
		if (p2p_ifp) {
			free_netdev(p2p_ifp->ndev);
			drvr->iflist[1] = NULL;
		}
976
		return ret;
977
	}
978
	if ((brcmf_p2p_enable) && (p2p_ifp))
979
980
		if (brcmf_net_p2p_attach(p2p_ifp) < 0)
			brcmf_p2p_enable = 0;
981

982
983
984
	return 0;
}

985
986
987
988
989
990
991
992
993
994
void brcmf_bus_add_txhdrlen(struct device *dev, uint len)
{
	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
	struct brcmf_pub *drvr = bus_if->drvr;

	if (drvr) {
		drvr->hdrlen += len;
	}
}

995
996
997
998
999
static void brcmf_bus_detach(struct brcmf_pub *drvr)
{
	brcmf_dbg(TRACE, "Enter\n");

	if (drvr) {
1000
		/* Stop the bus module */