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Merge branch 'batman-adv/maint' of git://git.open-mesh.org/linux-merge
[deliverable/linux.git] / drivers / net / wireless / brcm80211 / brcmfmac / dhd_linux.c
1 /*
2 * Copyright (c) 2010 Broadcom Corporation
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #include <linux/init.h>
18 #include <linux/kernel.h>
19 #include <linux/kthread.h>
20 #include <linux/slab.h>
21 #include <linux/skbuff.h>
22 #include <linux/netdevice.h>
23 #include <linux/etherdevice.h>
24 #include <linux/mmc/sdio_func.h>
25 #include <linux/random.h>
26 #include <linux/spinlock.h>
27 #include <linux/ethtool.h>
28 #include <linux/fcntl.h>
29 #include <linux/fs.h>
30 #include <linux/uaccess.h>
31 #include <linux/hardirq.h>
32 #include <linux/mutex.h>
33 #include <linux/wait.h>
34 #include <linux/module.h>
35 #include <net/cfg80211.h>
36 #include <net/rtnetlink.h>
37 #include <defs.h>
38 #include <brcmu_utils.h>
39 #include <brcmu_wifi.h>
40
41 #include "dhd.h"
42 #include "dhd_bus.h"
43 #include "dhd_proto.h"
44 #include "dhd_dbg.h"
45 #include "wl_cfg80211.h"
46 #include "bcmchip.h"
47
48 MODULE_AUTHOR("Broadcom Corporation");
49 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN fullmac driver.");
50 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN fullmac cards");
51 MODULE_LICENSE("Dual BSD/GPL");
52
53
54 /* Interface control information */
55 struct brcmf_if {
56 struct brcmf_info *info; /* back pointer to brcmf_info */
57 /* OS/stack specifics */
58 struct net_device *ndev;
59 struct net_device_stats stats;
60 int idx; /* iface idx in dongle */
61 int state; /* interface state */
62 u8 mac_addr[ETH_ALEN]; /* assigned MAC address */
63 };
64
65 /* Local private structure (extension of pub) */
66 struct brcmf_info {
67 struct brcmf_pub pub;
68
69 /* OS/stack specifics */
70 struct brcmf_if *iflist[BRCMF_MAX_IFS];
71
72 struct mutex proto_block;
73
74 struct work_struct setmacaddr_work;
75 struct work_struct multicast_work;
76 u8 macvalue[ETH_ALEN];
77 atomic_t pend_8021x_cnt;
78 };
79
80 /* Error bits */
81 module_param(brcmf_msg_level, int, 0);
82
83
84 static int brcmf_net2idx(struct brcmf_info *drvr_priv, struct net_device *ndev)
85 {
86 int i = 0;
87
88 while (i < BRCMF_MAX_IFS) {
89 if (drvr_priv->iflist[i] && drvr_priv->iflist[i]->ndev == ndev)
90 return i;
91 i++;
92 }
93
94 return BRCMF_BAD_IF;
95 }
96
97 int brcmf_ifname2idx(struct brcmf_info *drvr_priv, char *name)
98 {
99 int i = BRCMF_MAX_IFS;
100 struct brcmf_if *ifp;
101
102 if (name == NULL || *name == '\0')
103 return 0;
104
105 while (--i > 0) {
106 ifp = drvr_priv->iflist[i];
107 if (ifp && !strncmp(ifp->ndev->name, name, IFNAMSIZ))
108 break;
109 }
110
111 brcmf_dbg(TRACE, "return idx %d for \"%s\"\n", i, name);
112
113 return i; /* default - the primary interface */
114 }
115
116 char *brcmf_ifname(struct brcmf_pub *drvr, int ifidx)
117 {
118 struct brcmf_info *drvr_priv = drvr->info;
119
120 if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) {
121 brcmf_dbg(ERROR, "ifidx %d out of range\n", ifidx);
122 return "<if_bad>";
123 }
124
125 if (drvr_priv->iflist[ifidx] == NULL) {
126 brcmf_dbg(ERROR, "null i/f %d\n", ifidx);
127 return "<if_null>";
128 }
129
130 if (drvr_priv->iflist[ifidx]->ndev)
131 return drvr_priv->iflist[ifidx]->ndev->name;
132
133 return "<if_none>";
134 }
135
136 static void _brcmf_set_multicast_list(struct work_struct *work)
137 {
138 struct net_device *ndev;
139 struct netdev_hw_addr *ha;
140 u32 dcmd_value, cnt;
141 __le32 cnt_le;
142 __le32 dcmd_le_value;
143
144 struct brcmf_dcmd dcmd;
145 char *buf, *bufp;
146 uint buflen;
147 int ret;
148
149 struct brcmf_info *drvr_priv = container_of(work, struct brcmf_info,
150 multicast_work);
151
152 ndev = drvr_priv->iflist[0]->ndev;
153 cnt = netdev_mc_count(ndev);
154
155 /* Determine initial value of allmulti flag */
156 dcmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false;
157
158 /* Send down the multicast list first. */
159
160 buflen = sizeof("mcast_list") + sizeof(cnt) + (cnt * ETH_ALEN);
161 bufp = buf = kmalloc(buflen, GFP_ATOMIC);
162 if (!bufp)
163 return;
164
165 strcpy(bufp, "mcast_list");
166 bufp += strlen("mcast_list") + 1;
167
168 cnt_le = cpu_to_le32(cnt);
169 memcpy(bufp, &cnt_le, sizeof(cnt));
170 bufp += sizeof(cnt_le);
171
172 netdev_for_each_mc_addr(ha, ndev) {
173 if (!cnt)
174 break;
175 memcpy(bufp, ha->addr, ETH_ALEN);
176 bufp += ETH_ALEN;
177 cnt--;
178 }
179
180 memset(&dcmd, 0, sizeof(dcmd));
181 dcmd.cmd = BRCMF_C_SET_VAR;
182 dcmd.buf = buf;
183 dcmd.len = buflen;
184 dcmd.set = true;
185
186 ret = brcmf_proto_dcmd(&drvr_priv->pub, 0, &dcmd, dcmd.len);
187 if (ret < 0) {
188 brcmf_dbg(ERROR, "%s: set mcast_list failed, cnt %d\n",
189 brcmf_ifname(&drvr_priv->pub, 0), cnt);
190 dcmd_value = cnt ? true : dcmd_value;
191 }
192
193 kfree(buf);
194
195 /* Now send the allmulti setting. This is based on the setting in the
196 * net_device flags, but might be modified above to be turned on if we
197 * were trying to set some addresses and dongle rejected it...
198 */
199
200 buflen = sizeof("allmulti") + sizeof(dcmd_value);
201 buf = kmalloc(buflen, GFP_ATOMIC);
202 if (!buf)
203 return;
204
205 dcmd_le_value = cpu_to_le32(dcmd_value);
206
207 if (!brcmf_c_mkiovar
208 ("allmulti", (void *)&dcmd_le_value,
209 sizeof(dcmd_le_value), buf, buflen)) {
210 brcmf_dbg(ERROR, "%s: mkiovar failed for allmulti, datalen %d buflen %u\n",
211 brcmf_ifname(&drvr_priv->pub, 0),
212 (int)sizeof(dcmd_value), buflen);
213 kfree(buf);
214 return;
215 }
216
217 memset(&dcmd, 0, sizeof(dcmd));
218 dcmd.cmd = BRCMF_C_SET_VAR;
219 dcmd.buf = buf;
220 dcmd.len = buflen;
221 dcmd.set = true;
222
223 ret = brcmf_proto_dcmd(&drvr_priv->pub, 0, &dcmd, dcmd.len);
224 if (ret < 0) {
225 brcmf_dbg(ERROR, "%s: set allmulti %d failed\n",
226 brcmf_ifname(&drvr_priv->pub, 0),
227 le32_to_cpu(dcmd_le_value));
228 }
229
230 kfree(buf);
231
232 /* Finally, pick up the PROMISC flag as well, like the NIC
233 driver does */
234
235 dcmd_value = (ndev->flags & IFF_PROMISC) ? true : false;
236 dcmd_le_value = cpu_to_le32(dcmd_value);
237
238 memset(&dcmd, 0, sizeof(dcmd));
239 dcmd.cmd = BRCMF_C_SET_PROMISC;
240 dcmd.buf = &dcmd_le_value;
241 dcmd.len = sizeof(dcmd_le_value);
242 dcmd.set = true;
243
244 ret = brcmf_proto_dcmd(&drvr_priv->pub, 0, &dcmd, dcmd.len);
245 if (ret < 0) {
246 brcmf_dbg(ERROR, "%s: set promisc %d failed\n",
247 brcmf_ifname(&drvr_priv->pub, 0),
248 le32_to_cpu(dcmd_le_value));
249 }
250 }
251
252 static void
253 _brcmf_set_mac_address(struct work_struct *work)
254 {
255 char buf[32];
256 struct brcmf_dcmd dcmd;
257 int ret;
258
259 struct brcmf_info *drvr_priv = container_of(work, struct brcmf_info,
260 setmacaddr_work);
261
262 brcmf_dbg(TRACE, "enter\n");
263 if (!brcmf_c_mkiovar("cur_etheraddr", (char *)drvr_priv->macvalue,
264 ETH_ALEN, buf, 32)) {
265 brcmf_dbg(ERROR, "%s: mkiovar failed for cur_etheraddr\n",
266 brcmf_ifname(&drvr_priv->pub, 0));
267 return;
268 }
269 memset(&dcmd, 0, sizeof(dcmd));
270 dcmd.cmd = BRCMF_C_SET_VAR;
271 dcmd.buf = buf;
272 dcmd.len = 32;
273 dcmd.set = true;
274
275 ret = brcmf_proto_dcmd(&drvr_priv->pub, 0, &dcmd, dcmd.len);
276 if (ret < 0)
277 brcmf_dbg(ERROR, "%s: set cur_etheraddr failed\n",
278 brcmf_ifname(&drvr_priv->pub, 0));
279 else
280 memcpy(drvr_priv->iflist[0]->ndev->dev_addr,
281 drvr_priv->macvalue, ETH_ALEN);
282
283 return;
284 }
285
286 static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr)
287 {
288 struct brcmf_info *drvr_priv = *(struct brcmf_info **)
289 netdev_priv(ndev);
290 struct sockaddr *sa = (struct sockaddr *)addr;
291 int ifidx;
292
293 ifidx = brcmf_net2idx(drvr_priv, ndev);
294 if (ifidx == BRCMF_BAD_IF)
295 return -1;
296
297 memcpy(&drvr_priv->macvalue, sa->sa_data, ETH_ALEN);
298 schedule_work(&drvr_priv->setmacaddr_work);
299 return 0;
300 }
301
302 static void brcmf_netdev_set_multicast_list(struct net_device *ndev)
303 {
304 struct brcmf_info *drvr_priv = *(struct brcmf_info **)
305 netdev_priv(ndev);
306 int ifidx;
307
308 ifidx = brcmf_net2idx(drvr_priv, ndev);
309 if (ifidx == BRCMF_BAD_IF)
310 return;
311
312 schedule_work(&drvr_priv->multicast_work);
313 }
314
315 int brcmf_sendpkt(struct brcmf_pub *drvr, int ifidx, struct sk_buff *pktbuf)
316 {
317 struct brcmf_info *drvr_priv = drvr->info;
318
319 /* Reject if down */
320 if (!drvr->up || (drvr->busstate == BRCMF_BUS_DOWN))
321 return -ENODEV;
322
323 /* Update multicast statistic */
324 if (pktbuf->len >= ETH_ALEN) {
325 u8 *pktdata = (u8 *) (pktbuf->data);
326 struct ethhdr *eh = (struct ethhdr *)pktdata;
327
328 if (is_multicast_ether_addr(eh->h_dest))
329 drvr->tx_multicast++;
330 if (ntohs(eh->h_proto) == ETH_P_PAE)
331 atomic_inc(&drvr_priv->pend_8021x_cnt);
332 }
333
334 /* If the protocol uses a data header, apply it */
335 brcmf_proto_hdrpush(drvr, ifidx, pktbuf);
336
337 /* Use bus module to send data frame */
338 return brcmf_sdbrcm_bus_txdata(drvr->bus, pktbuf);
339 }
340
341 static int brcmf_netdev_start_xmit(struct sk_buff *skb, struct net_device *ndev)
342 {
343 int ret;
344 struct brcmf_info *drvr_priv = *(struct brcmf_info **)
345 netdev_priv(ndev);
346 int ifidx;
347
348 brcmf_dbg(TRACE, "Enter\n");
349
350 /* Reject if down */
351 if (!drvr_priv->pub.up || (drvr_priv->pub.busstate == BRCMF_BUS_DOWN)) {
352 brcmf_dbg(ERROR, "xmit rejected pub.up=%d busstate=%d\n",
353 drvr_priv->pub.up, drvr_priv->pub.busstate);
354 netif_stop_queue(ndev);
355 return -ENODEV;
356 }
357
358 ifidx = brcmf_net2idx(drvr_priv, ndev);
359 if (ifidx == BRCMF_BAD_IF) {
360 brcmf_dbg(ERROR, "bad ifidx %d\n", ifidx);
361 netif_stop_queue(ndev);
362 return -ENODEV;
363 }
364
365 /* Make sure there's enough room for any header */
366 if (skb_headroom(skb) < drvr_priv->pub.hdrlen) {
367 struct sk_buff *skb2;
368
369 brcmf_dbg(INFO, "%s: insufficient headroom\n",
370 brcmf_ifname(&drvr_priv->pub, ifidx));
371 drvr_priv->pub.tx_realloc++;
372 skb2 = skb_realloc_headroom(skb, drvr_priv->pub.hdrlen);
373 dev_kfree_skb(skb);
374 skb = skb2;
375 if (skb == NULL) {
376 brcmf_dbg(ERROR, "%s: skb_realloc_headroom failed\n",
377 brcmf_ifname(&drvr_priv->pub, ifidx));
378 ret = -ENOMEM;
379 goto done;
380 }
381 }
382
383 ret = brcmf_sendpkt(&drvr_priv->pub, ifidx, skb);
384
385 done:
386 if (ret)
387 drvr_priv->pub.dstats.tx_dropped++;
388 else
389 drvr_priv->pub.tx_packets++;
390
391 /* Return ok: we always eat the packet */
392 return 0;
393 }
394
395 void brcmf_txflowcontrol(struct brcmf_pub *drvr, int ifidx, bool state)
396 {
397 struct net_device *ndev;
398 struct brcmf_info *drvr_priv = drvr->info;
399
400 brcmf_dbg(TRACE, "Enter\n");
401
402 drvr->txoff = state;
403 ndev = drvr_priv->iflist[ifidx]->ndev;
404 if (state == ON)
405 netif_stop_queue(ndev);
406 else
407 netif_wake_queue(ndev);
408 }
409
410 static int brcmf_host_event(struct brcmf_info *drvr_priv, int *ifidx,
411 void *pktdata, struct brcmf_event_msg *event,
412 void **data)
413 {
414 int bcmerror = 0;
415
416 bcmerror = brcmf_c_host_event(drvr_priv, ifidx, pktdata, event, data);
417 if (bcmerror != 0)
418 return bcmerror;
419
420 if (drvr_priv->iflist[*ifidx]->ndev)
421 brcmf_cfg80211_event(drvr_priv->iflist[*ifidx]->ndev,
422 event, *data);
423
424 return bcmerror;
425 }
426
427 void brcmf_rx_frame(struct brcmf_pub *drvr, int ifidx, struct sk_buff *skb,
428 int numpkt)
429 {
430 struct brcmf_info *drvr_priv = drvr->info;
431 unsigned char *eth;
432 uint len;
433 void *data;
434 struct sk_buff *pnext, *save_pktbuf;
435 int i;
436 struct brcmf_if *ifp;
437 struct brcmf_event_msg event;
438
439 brcmf_dbg(TRACE, "Enter\n");
440
441 save_pktbuf = skb;
442
443 for (i = 0; skb && i < numpkt; i++, skb = pnext) {
444
445 pnext = skb->next;
446 skb->next = NULL;
447
448 /* Get the protocol, maintain skb around eth_type_trans()
449 * The main reason for this hack is for the limitation of
450 * Linux 2.4 where 'eth_type_trans' uses the
451 * 'net->hard_header_len'
452 * to perform skb_pull inside vs ETH_HLEN. Since to avoid
453 * coping of the packet coming from the network stack to add
454 * BDC, Hardware header etc, during network interface
455 * registration
456 * we set the 'net->hard_header_len' to ETH_HLEN + extra space
457 * required
458 * for BDC, Hardware header etc. and not just the ETH_HLEN
459 */
460 eth = skb->data;
461 len = skb->len;
462
463 ifp = drvr_priv->iflist[ifidx];
464 if (ifp == NULL)
465 ifp = drvr_priv->iflist[0];
466
467 skb->dev = ifp->ndev;
468 skb->protocol = eth_type_trans(skb, skb->dev);
469
470 if (skb->pkt_type == PACKET_MULTICAST)
471 drvr_priv->pub.rx_multicast++;
472
473 skb->data = eth;
474 skb->len = len;
475
476 /* Strip header, count, deliver upward */
477 skb_pull(skb, ETH_HLEN);
478
479 /* Process special event packets and then discard them */
480 if (ntohs(skb->protocol) == ETH_P_LINK_CTL)
481 brcmf_host_event(drvr_priv, &ifidx,
482 skb_mac_header(skb),
483 &event, &data);
484
485 if (drvr_priv->iflist[ifidx] &&
486 !drvr_priv->iflist[ifidx]->state)
487 ifp = drvr_priv->iflist[ifidx];
488
489 if (ifp->ndev)
490 ifp->ndev->last_rx = jiffies;
491
492 drvr->dstats.rx_bytes += skb->len;
493 drvr->rx_packets++; /* Local count */
494
495 if (in_interrupt())
496 netif_rx(skb);
497 else
498 /* If the receive is not processed inside an ISR,
499 * the softirqd must be woken explicitly to service
500 * the NET_RX_SOFTIRQ. In 2.6 kernels, this is handled
501 * by netif_rx_ni(), but in earlier kernels, we need
502 * to do it manually.
503 */
504 netif_rx_ni(skb);
505 }
506 }
507
508 void brcmf_txcomplete(struct brcmf_pub *drvr, struct sk_buff *txp, bool success)
509 {
510 uint ifidx;
511 struct brcmf_info *drvr_priv = drvr->info;
512 struct ethhdr *eh;
513 u16 type;
514
515 brcmf_proto_hdrpull(drvr, &ifidx, txp);
516
517 eh = (struct ethhdr *)(txp->data);
518 type = ntohs(eh->h_proto);
519
520 if (type == ETH_P_PAE)
521 atomic_dec(&drvr_priv->pend_8021x_cnt);
522
523 }
524
525 static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev)
526 {
527 struct brcmf_info *drvr_priv = *(struct brcmf_info **)
528 netdev_priv(ndev);
529 struct brcmf_if *ifp;
530 int ifidx;
531
532 brcmf_dbg(TRACE, "Enter\n");
533
534 ifidx = brcmf_net2idx(drvr_priv, ndev);
535 if (ifidx == BRCMF_BAD_IF)
536 return NULL;
537
538 ifp = drvr_priv->iflist[ifidx];
539
540 if (drvr_priv->pub.up)
541 /* Use the protocol to get dongle stats */
542 brcmf_proto_dstats(&drvr_priv->pub);
543
544 /* Copy dongle stats to net device stats */
545 ifp->stats.rx_packets = drvr_priv->pub.dstats.rx_packets;
546 ifp->stats.tx_packets = drvr_priv->pub.dstats.tx_packets;
547 ifp->stats.rx_bytes = drvr_priv->pub.dstats.rx_bytes;
548 ifp->stats.tx_bytes = drvr_priv->pub.dstats.tx_bytes;
549 ifp->stats.rx_errors = drvr_priv->pub.dstats.rx_errors;
550 ifp->stats.tx_errors = drvr_priv->pub.dstats.tx_errors;
551 ifp->stats.rx_dropped = drvr_priv->pub.dstats.rx_dropped;
552 ifp->stats.tx_dropped = drvr_priv->pub.dstats.tx_dropped;
553 ifp->stats.multicast = drvr_priv->pub.dstats.multicast;
554
555 return &ifp->stats;
556 }
557
558 /* Retrieve current toe component enables, which are kept
559 as a bitmap in toe_ol iovar */
560 static int brcmf_toe_get(struct brcmf_info *drvr_priv, int ifidx, u32 *toe_ol)
561 {
562 struct brcmf_dcmd dcmd;
563 __le32 toe_le;
564 char buf[32];
565 int ret;
566
567 memset(&dcmd, 0, sizeof(dcmd));
568
569 dcmd.cmd = BRCMF_C_GET_VAR;
570 dcmd.buf = buf;
571 dcmd.len = (uint) sizeof(buf);
572 dcmd.set = false;
573
574 strcpy(buf, "toe_ol");
575 ret = brcmf_proto_dcmd(&drvr_priv->pub, ifidx, &dcmd, dcmd.len);
576 if (ret < 0) {
577 /* Check for older dongle image that doesn't support toe_ol */
578 if (ret == -EIO) {
579 brcmf_dbg(ERROR, "%s: toe not supported by device\n",
580 brcmf_ifname(&drvr_priv->pub, ifidx));
581 return -EOPNOTSUPP;
582 }
583
584 brcmf_dbg(INFO, "%s: could not get toe_ol: ret=%d\n",
585 brcmf_ifname(&drvr_priv->pub, ifidx), ret);
586 return ret;
587 }
588
589 memcpy(&toe_le, buf, sizeof(u32));
590 *toe_ol = le32_to_cpu(toe_le);
591 return 0;
592 }
593
594 /* Set current toe component enables in toe_ol iovar,
595 and set toe global enable iovar */
596 static int brcmf_toe_set(struct brcmf_info *drvr_priv, int ifidx, u32 toe_ol)
597 {
598 struct brcmf_dcmd dcmd;
599 char buf[32];
600 int ret;
601 __le32 toe_le = cpu_to_le32(toe_ol);
602
603 memset(&dcmd, 0, sizeof(dcmd));
604
605 dcmd.cmd = BRCMF_C_SET_VAR;
606 dcmd.buf = buf;
607 dcmd.len = (uint) sizeof(buf);
608 dcmd.set = true;
609
610 /* Set toe_ol as requested */
611 strcpy(buf, "toe_ol");
612 memcpy(&buf[sizeof("toe_ol")], &toe_le, sizeof(u32));
613
614 ret = brcmf_proto_dcmd(&drvr_priv->pub, ifidx, &dcmd, dcmd.len);
615 if (ret < 0) {
616 brcmf_dbg(ERROR, "%s: could not set toe_ol: ret=%d\n",
617 brcmf_ifname(&drvr_priv->pub, ifidx), ret);
618 return ret;
619 }
620
621 /* Enable toe globally only if any components are enabled. */
622 toe_le = cpu_to_le32(toe_ol != 0);
623
624 strcpy(buf, "toe");
625 memcpy(&buf[sizeof("toe")], &toe_le, sizeof(u32));
626
627 ret = brcmf_proto_dcmd(&drvr_priv->pub, ifidx, &dcmd, dcmd.len);
628 if (ret < 0) {
629 brcmf_dbg(ERROR, "%s: could not set toe: ret=%d\n",
630 brcmf_ifname(&drvr_priv->pub, ifidx), ret);
631 return ret;
632 }
633
634 return 0;
635 }
636
637 static void brcmf_ethtool_get_drvinfo(struct net_device *ndev,
638 struct ethtool_drvinfo *info)
639 {
640 struct brcmf_info *drvr_priv = *(struct brcmf_info **)
641 netdev_priv(ndev);
642
643 sprintf(info->driver, KBUILD_MODNAME);
644 sprintf(info->version, "%lu", drvr_priv->pub.drv_version);
645 sprintf(info->fw_version, "%s", BCM4329_FW_NAME);
646 sprintf(info->bus_info, "%s",
647 dev_name(brcmf_bus_get_device(drvr_priv->pub.bus)));
648 }
649
650 static struct ethtool_ops brcmf_ethtool_ops = {
651 .get_drvinfo = brcmf_ethtool_get_drvinfo
652 };
653
654 static int brcmf_ethtool(struct brcmf_info *drvr_priv, void __user *uaddr)
655 {
656 struct ethtool_drvinfo info;
657 char drvname[sizeof(info.driver)];
658 u32 cmd;
659 struct ethtool_value edata;
660 u32 toe_cmpnt, csum_dir;
661 int ret;
662
663 brcmf_dbg(TRACE, "Enter\n");
664
665 /* all ethtool calls start with a cmd word */
666 if (copy_from_user(&cmd, uaddr, sizeof(u32)))
667 return -EFAULT;
668
669 switch (cmd) {
670 case ETHTOOL_GDRVINFO:
671 /* Copy out any request driver name */
672 if (copy_from_user(&info, uaddr, sizeof(info)))
673 return -EFAULT;
674 strncpy(drvname, info.driver, sizeof(info.driver));
675 drvname[sizeof(info.driver) - 1] = '\0';
676
677 /* clear struct for return */
678 memset(&info, 0, sizeof(info));
679 info.cmd = cmd;
680
681 /* if requested, identify ourselves */
682 if (strcmp(drvname, "?dhd") == 0) {
683 sprintf(info.driver, "dhd");
684 strcpy(info.version, BRCMF_VERSION_STR);
685 }
686
687 /* otherwise, require dongle to be up */
688 else if (!drvr_priv->pub.up) {
689 brcmf_dbg(ERROR, "dongle is not up\n");
690 return -ENODEV;
691 }
692
693 /* finally, report dongle driver type */
694 else if (drvr_priv->pub.iswl)
695 sprintf(info.driver, "wl");
696 else
697 sprintf(info.driver, "xx");
698
699 sprintf(info.version, "%lu", drvr_priv->pub.drv_version);
700 if (copy_to_user(uaddr, &info, sizeof(info)))
701 return -EFAULT;
702 brcmf_dbg(CTL, "given %*s, returning %s\n",
703 (int)sizeof(drvname), drvname, info.driver);
704 break;
705
706 /* Get toe offload components from dongle */
707 case ETHTOOL_GRXCSUM:
708 case ETHTOOL_GTXCSUM:
709 ret = brcmf_toe_get(drvr_priv, 0, &toe_cmpnt);
710 if (ret < 0)
711 return ret;
712
713 csum_dir =
714 (cmd == ETHTOOL_GTXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
715
716 edata.cmd = cmd;
717 edata.data = (toe_cmpnt & csum_dir) ? 1 : 0;
718
719 if (copy_to_user(uaddr, &edata, sizeof(edata)))
720 return -EFAULT;
721 break;
722
723 /* Set toe offload components in dongle */
724 case ETHTOOL_SRXCSUM:
725 case ETHTOOL_STXCSUM:
726 if (copy_from_user(&edata, uaddr, sizeof(edata)))
727 return -EFAULT;
728
729 /* Read the current settings, update and write back */
730 ret = brcmf_toe_get(drvr_priv, 0, &toe_cmpnt);
731 if (ret < 0)
732 return ret;
733
734 csum_dir =
735 (cmd == ETHTOOL_STXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
736
737 if (edata.data != 0)
738 toe_cmpnt |= csum_dir;
739 else
740 toe_cmpnt &= ~csum_dir;
741
742 ret = brcmf_toe_set(drvr_priv, 0, toe_cmpnt);
743 if (ret < 0)
744 return ret;
745
746 /* If setting TX checksum mode, tell Linux the new mode */
747 if (cmd == ETHTOOL_STXCSUM) {
748 if (edata.data)
749 drvr_priv->iflist[0]->ndev->features |=
750 NETIF_F_IP_CSUM;
751 else
752 drvr_priv->iflist[0]->ndev->features &=
753 ~NETIF_F_IP_CSUM;
754 }
755
756 break;
757
758 default:
759 return -EOPNOTSUPP;
760 }
761
762 return 0;
763 }
764
765 static int brcmf_netdev_ioctl_entry(struct net_device *ndev, struct ifreq *ifr,
766 int cmd)
767 {
768 struct brcmf_info *drvr_priv = *(struct brcmf_info **)
769 netdev_priv(ndev);
770 int ifidx;
771
772 ifidx = brcmf_net2idx(drvr_priv, ndev);
773 brcmf_dbg(TRACE, "ifidx %d, cmd 0x%04x\n", ifidx, cmd);
774
775 if (ifidx == BRCMF_BAD_IF)
776 return -1;
777
778 if (cmd == SIOCETHTOOL)
779 return brcmf_ethtool(drvr_priv, ifr->ifr_data);
780
781 return -EOPNOTSUPP;
782 }
783
784 /* called only from within this driver. Sends a command to the dongle. */
785 s32 brcmf_exec_dcmd(struct net_device *ndev, u32 cmd, void *arg, u32 len)
786 {
787 struct brcmf_dcmd dcmd;
788 s32 err = 0;
789 int buflen = 0;
790 bool is_set_key_cmd;
791 struct brcmf_info *drvr_priv = *(struct brcmf_info **)
792 netdev_priv(ndev);
793 int ifidx;
794
795 memset(&dcmd, 0, sizeof(dcmd));
796 dcmd.cmd = cmd;
797 dcmd.buf = arg;
798 dcmd.len = len;
799
800 ifidx = brcmf_net2idx(drvr_priv, ndev);
801
802 if (dcmd.buf != NULL)
803 buflen = min_t(uint, dcmd.len, BRCMF_DCMD_MAXLEN);
804
805 /* send to dongle (must be up, and wl) */
806 if ((drvr_priv->pub.busstate != BRCMF_BUS_DATA)) {
807 brcmf_dbg(ERROR, "DONGLE_DOWN\n");
808 err = -EIO;
809 goto done;
810 }
811
812 if (!drvr_priv->pub.iswl) {
813 err = -EIO;
814 goto done;
815 }
816
817 /*
818 * Intercept BRCMF_C_SET_KEY CMD - serialize M4 send and
819 * set key CMD to prevent M4 encryption.
820 */
821 is_set_key_cmd = ((dcmd.cmd == BRCMF_C_SET_KEY) ||
822 ((dcmd.cmd == BRCMF_C_SET_VAR) &&
823 !(strncmp("wsec_key", dcmd.buf, 9))) ||
824 ((dcmd.cmd == BRCMF_C_SET_VAR) &&
825 !(strncmp("bsscfg:wsec_key", dcmd.buf, 15))));
826 if (is_set_key_cmd)
827 brcmf_netdev_wait_pend8021x(ndev);
828
829 err = brcmf_proto_dcmd(&drvr_priv->pub, ifidx, &dcmd, buflen);
830
831 done:
832 if (err > 0)
833 err = 0;
834
835 return err;
836 }
837
838 static int brcmf_netdev_stop(struct net_device *ndev)
839 {
840 struct brcmf_pub *drvr = *(struct brcmf_pub **) netdev_priv(ndev);
841
842 brcmf_dbg(TRACE, "Enter\n");
843 brcmf_cfg80211_down(drvr->config);
844 if (drvr->up == 0)
845 return 0;
846
847 /* Set state and stop OS transmissions */
848 drvr->up = 0;
849 netif_stop_queue(ndev);
850
851 return 0;
852 }
853
854 static int brcmf_netdev_open(struct net_device *ndev)
855 {
856 struct brcmf_info *drvr_priv = *(struct brcmf_info **)
857 netdev_priv(ndev);
858 u32 toe_ol;
859 int ifidx = brcmf_net2idx(drvr_priv, ndev);
860 s32 ret = 0;
861
862 brcmf_dbg(TRACE, "ifidx %d\n", ifidx);
863
864 if (ifidx == 0) { /* do it only for primary eth0 */
865
866 /* try to bring up bus */
867 ret = brcmf_bus_start(&drvr_priv->pub);
868 if (ret != 0) {
869 brcmf_dbg(ERROR, "failed with code %d\n", ret);
870 return -1;
871 }
872 atomic_set(&drvr_priv->pend_8021x_cnt, 0);
873
874 memcpy(ndev->dev_addr, drvr_priv->pub.mac, ETH_ALEN);
875
876 /* Get current TOE mode from dongle */
877 if (brcmf_toe_get(drvr_priv, ifidx, &toe_ol) >= 0
878 && (toe_ol & TOE_TX_CSUM_OL) != 0)
879 drvr_priv->iflist[ifidx]->ndev->features |=
880 NETIF_F_IP_CSUM;
881 else
882 drvr_priv->iflist[ifidx]->ndev->features &=
883 ~NETIF_F_IP_CSUM;
884 }
885 /* Allow transmit calls */
886 netif_start_queue(ndev);
887 drvr_priv->pub.up = 1;
888 if (brcmf_cfg80211_up(drvr_priv->pub.config)) {
889 brcmf_dbg(ERROR, "failed to bring up cfg80211\n");
890 return -1;
891 }
892
893 return ret;
894 }
895
896 int
897 brcmf_add_if(struct brcmf_info *drvr_priv, int ifidx, struct net_device *ndev,
898 char *name, u8 *mac_addr, u32 flags, u8 bssidx)
899 {
900 struct brcmf_if *ifp;
901 int ret = 0, err = 0;
902
903 brcmf_dbg(TRACE, "idx %d, handle->%p\n", ifidx, ndev);
904
905 ifp = drvr_priv->iflist[ifidx];
906 if (!ifp) {
907 ifp = kmalloc(sizeof(struct brcmf_if), GFP_ATOMIC);
908 if (!ifp)
909 return -ENOMEM;
910 }
911
912 memset(ifp, 0, sizeof(struct brcmf_if));
913 ifp->info = drvr_priv;
914 drvr_priv->iflist[ifidx] = ifp;
915 if (mac_addr != NULL)
916 memcpy(&ifp->mac_addr, mac_addr, ETH_ALEN);
917
918 if (ndev == NULL) {
919 ifp->state = BRCMF_E_IF_ADD;
920 ifp->idx = ifidx;
921 /*
922 * Delete the existing interface before overwriting it
923 * in case we missed the BRCMF_E_IF_DEL event.
924 */
925 if (ifp->ndev != NULL) {
926 brcmf_dbg(ERROR, "ERROR: netdev:%s already exists, try free & unregister\n",
927 ifp->ndev->name);
928 netif_stop_queue(ifp->ndev);
929 unregister_netdev(ifp->ndev);
930 free_netdev(ifp->ndev);
931 }
932
933 /* Allocate netdev, including space for private structure */
934 ifp->ndev = alloc_netdev(sizeof(drvr_priv), "wlan%d",
935 ether_setup);
936 if (!ifp->ndev) {
937 brcmf_dbg(ERROR, "OOM - alloc_netdev\n");
938 ret = -ENOMEM;
939 }
940
941 if (ret == 0) {
942 memcpy(netdev_priv(ifp->ndev), &drvr_priv,
943 sizeof(drvr_priv));
944 err = brcmf_net_attach(&drvr_priv->pub, ifp->idx);
945 if (err != 0) {
946 brcmf_dbg(ERROR, "brcmf_net_attach failed, err %d\n",
947 err);
948 ret = -EOPNOTSUPP;
949 } else {
950 brcmf_dbg(TRACE, " ==== pid:%x, net_device for if:%s created ===\n",
951 current->pid, ifp->ndev->name);
952 ifp->state = 0;
953 }
954 }
955
956 if (ret < 0) {
957 if (ifp->ndev)
958 free_netdev(ifp->ndev);
959
960 drvr_priv->iflist[ifp->idx] = NULL;
961 kfree(ifp);
962 }
963 } else
964 ifp->ndev = ndev;
965
966 return 0;
967 }
968
969 void brcmf_del_if(struct brcmf_info *drvr_priv, int ifidx)
970 {
971 struct brcmf_if *ifp;
972
973 brcmf_dbg(TRACE, "idx %d\n", ifidx);
974
975 ifp = drvr_priv->iflist[ifidx];
976 if (!ifp) {
977 brcmf_dbg(ERROR, "Null interface\n");
978 return;
979 }
980
981 ifp->state = BRCMF_E_IF_DEL;
982 ifp->idx = ifidx;
983 if (ifp->ndev != NULL) {
984 netif_stop_queue(ifp->ndev);
985 unregister_netdev(ifp->ndev);
986 free_netdev(ifp->ndev);
987 drvr_priv->iflist[ifidx] = NULL;
988 kfree(ifp);
989 }
990 }
991
992 struct brcmf_pub *brcmf_attach(struct brcmf_bus *bus, uint bus_hdrlen)
993 {
994 struct brcmf_info *drvr_priv = NULL;
995 struct net_device *ndev;
996
997 brcmf_dbg(TRACE, "Enter\n");
998
999 /* Allocate netdev, including space for private structure */
1000 ndev = alloc_netdev(sizeof(drvr_priv), "wlan%d", ether_setup);
1001 if (!ndev) {
1002 brcmf_dbg(ERROR, "OOM - alloc_netdev\n");
1003 goto fail;
1004 }
1005
1006 /* Allocate primary brcmf_info */
1007 drvr_priv = kzalloc(sizeof(struct brcmf_info), GFP_ATOMIC);
1008 if (!drvr_priv)
1009 goto fail;
1010
1011 /*
1012 * Save the brcmf_info into the priv
1013 */
1014 memcpy(netdev_priv(ndev), &drvr_priv, sizeof(drvr_priv));
1015
1016 if (brcmf_add_if(drvr_priv, 0, ndev, ndev->name, NULL, 0, 0) ==
1017 BRCMF_BAD_IF)
1018 goto fail;
1019
1020 ndev->netdev_ops = NULL;
1021 mutex_init(&drvr_priv->proto_block);
1022
1023 /* Link to info module */
1024 drvr_priv->pub.info = drvr_priv;
1025
1026 /* Link to bus module */
1027 drvr_priv->pub.bus = bus;
1028 drvr_priv->pub.hdrlen = bus_hdrlen;
1029
1030 /* Attach and link in the protocol */
1031 if (brcmf_proto_attach(&drvr_priv->pub) != 0) {
1032 brcmf_dbg(ERROR, "brcmf_prot_attach failed\n");
1033 goto fail;
1034 }
1035
1036 /* Attach and link in the cfg80211 */
1037 drvr_priv->pub.config =
1038 brcmf_cfg80211_attach(ndev,
1039 brcmf_bus_get_device(bus),
1040 &drvr_priv->pub);
1041 if (drvr_priv->pub.config == NULL) {
1042 brcmf_dbg(ERROR, "wl_cfg80211_attach failed\n");
1043 goto fail;
1044 }
1045
1046 INIT_WORK(&drvr_priv->setmacaddr_work, _brcmf_set_mac_address);
1047 INIT_WORK(&drvr_priv->multicast_work, _brcmf_set_multicast_list);
1048
1049 /*
1050 * Save the brcmf_info into the priv
1051 */
1052 memcpy(netdev_priv(ndev), &drvr_priv, sizeof(drvr_priv));
1053
1054 return &drvr_priv->pub;
1055
1056 fail:
1057 if (ndev)
1058 free_netdev(ndev);
1059 if (drvr_priv)
1060 brcmf_detach(&drvr_priv->pub);
1061
1062 return NULL;
1063 }
1064
1065 int brcmf_bus_start(struct brcmf_pub *drvr)
1066 {
1067 int ret = -1;
1068 struct brcmf_info *drvr_priv = drvr->info;
1069 /* Room for "event_msgs" + '\0' + bitvec */
1070 char iovbuf[BRCMF_EVENTING_MASK_LEN + 12];
1071
1072 brcmf_dbg(TRACE, "\n");
1073
1074 /* Bring up the bus */
1075 ret = brcmf_sdbrcm_bus_init(&drvr_priv->pub);
1076 if (ret != 0) {
1077 brcmf_dbg(ERROR, "brcmf_sdbrcm_bus_init failed %d\n", ret);
1078 return ret;
1079 }
1080
1081 /* If bus is not ready, can't come up */
1082 if (drvr_priv->pub.busstate != BRCMF_BUS_DATA) {
1083 brcmf_dbg(ERROR, "failed bus is not ready\n");
1084 return -ENODEV;
1085 }
1086
1087 brcmf_c_mkiovar("event_msgs", drvr->eventmask, BRCMF_EVENTING_MASK_LEN,
1088 iovbuf, sizeof(iovbuf));
1089 brcmf_proto_cdc_query_dcmd(drvr, 0, BRCMF_C_GET_VAR, iovbuf,
1090 sizeof(iovbuf));
1091 memcpy(drvr->eventmask, iovbuf, BRCMF_EVENTING_MASK_LEN);
1092
1093 setbit(drvr->eventmask, BRCMF_E_SET_SSID);
1094 setbit(drvr->eventmask, BRCMF_E_PRUNE);
1095 setbit(drvr->eventmask, BRCMF_E_AUTH);
1096 setbit(drvr->eventmask, BRCMF_E_REASSOC);
1097 setbit(drvr->eventmask, BRCMF_E_REASSOC_IND);
1098 setbit(drvr->eventmask, BRCMF_E_DEAUTH_IND);
1099 setbit(drvr->eventmask, BRCMF_E_DISASSOC_IND);
1100 setbit(drvr->eventmask, BRCMF_E_DISASSOC);
1101 setbit(drvr->eventmask, BRCMF_E_JOIN);
1102 setbit(drvr->eventmask, BRCMF_E_ASSOC_IND);
1103 setbit(drvr->eventmask, BRCMF_E_PSK_SUP);
1104 setbit(drvr->eventmask, BRCMF_E_LINK);
1105 setbit(drvr->eventmask, BRCMF_E_NDIS_LINK);
1106 setbit(drvr->eventmask, BRCMF_E_MIC_ERROR);
1107 setbit(drvr->eventmask, BRCMF_E_PMKID_CACHE);
1108 setbit(drvr->eventmask, BRCMF_E_TXFAIL);
1109 setbit(drvr->eventmask, BRCMF_E_JOIN_START);
1110 setbit(drvr->eventmask, BRCMF_E_SCAN_COMPLETE);
1111
1112 /* enable dongle roaming event */
1113
1114 drvr->pktfilter_count = 1;
1115 /* Setup filter to allow only unicast */
1116 drvr->pktfilter[0] = "100 0 0 0 0x01 0x00";
1117
1118 /* Bus is ready, do any protocol initialization */
1119 ret = brcmf_proto_init(&drvr_priv->pub);
1120 if (ret < 0)
1121 return ret;
1122
1123 return 0;
1124 }
1125
1126 static struct net_device_ops brcmf_netdev_ops_pri = {
1127 .ndo_open = brcmf_netdev_open,
1128 .ndo_stop = brcmf_netdev_stop,
1129 .ndo_get_stats = brcmf_netdev_get_stats,
1130 .ndo_do_ioctl = brcmf_netdev_ioctl_entry,
1131 .ndo_start_xmit = brcmf_netdev_start_xmit,
1132 .ndo_set_mac_address = brcmf_netdev_set_mac_address,
1133 .ndo_set_rx_mode = brcmf_netdev_set_multicast_list
1134 };
1135
1136 int brcmf_net_attach(struct brcmf_pub *drvr, int ifidx)
1137 {
1138 struct brcmf_info *drvr_priv = drvr->info;
1139 struct net_device *ndev;
1140 u8 temp_addr[ETH_ALEN] = {
1141 0x00, 0x90, 0x4c, 0x11, 0x22, 0x33};
1142
1143 brcmf_dbg(TRACE, "ifidx %d\n", ifidx);
1144
1145 ndev = drvr_priv->iflist[ifidx]->ndev;
1146 ndev->netdev_ops = &brcmf_netdev_ops_pri;
1147
1148 /*
1149 * We have to use the primary MAC for virtual interfaces
1150 */
1151 if (ifidx != 0) {
1152 /* for virtual interfaces use the primary MAC */
1153 memcpy(temp_addr, drvr_priv->pub.mac, ETH_ALEN);
1154
1155 }
1156
1157 if (ifidx == 1) {
1158 brcmf_dbg(TRACE, "ACCESS POINT MAC:\n");
1159 /* ACCESSPOINT INTERFACE CASE */
1160 temp_addr[0] |= 0X02; /* set bit 2 ,
1161 - Locally Administered address */
1162
1163 }
1164 ndev->hard_header_len = ETH_HLEN + drvr_priv->pub.hdrlen;
1165 ndev->ethtool_ops = &brcmf_ethtool_ops;
1166
1167 drvr_priv->pub.rxsz = ndev->mtu + ndev->hard_header_len +
1168 drvr_priv->pub.hdrlen;
1169
1170 memcpy(ndev->dev_addr, temp_addr, ETH_ALEN);
1171
1172 if (register_netdev(ndev) != 0) {
1173 brcmf_dbg(ERROR, "couldn't register the net device\n");
1174 goto fail;
1175 }
1176
1177 brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
1178
1179 return 0;
1180
1181 fail:
1182 ndev->netdev_ops = NULL;
1183 return -EBADE;
1184 }
1185
1186 static void brcmf_bus_detach(struct brcmf_pub *drvr)
1187 {
1188 struct brcmf_info *drvr_priv;
1189
1190 brcmf_dbg(TRACE, "Enter\n");
1191
1192 if (drvr) {
1193 drvr_priv = drvr->info;
1194 if (drvr_priv) {
1195 /* Stop the protocol module */
1196 brcmf_proto_stop(&drvr_priv->pub);
1197
1198 /* Stop the bus module */
1199 brcmf_sdbrcm_bus_stop(drvr_priv->pub.bus);
1200 }
1201 }
1202 }
1203
1204 void brcmf_detach(struct brcmf_pub *drvr)
1205 {
1206 struct brcmf_info *drvr_priv;
1207
1208 brcmf_dbg(TRACE, "Enter\n");
1209
1210 if (drvr) {
1211 drvr_priv = drvr->info;
1212 if (drvr_priv) {
1213 struct brcmf_if *ifp;
1214 int i;
1215
1216 for (i = 1; i < BRCMF_MAX_IFS; i++)
1217 if (drvr_priv->iflist[i])
1218 brcmf_del_if(drvr_priv, i);
1219
1220 ifp = drvr_priv->iflist[0];
1221 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
1222 rtnl_lock();
1223 brcmf_netdev_stop(ifp->ndev);
1224 rtnl_unlock();
1225 unregister_netdev(ifp->ndev);
1226 }
1227
1228 cancel_work_sync(&drvr_priv->setmacaddr_work);
1229 cancel_work_sync(&drvr_priv->multicast_work);
1230
1231 brcmf_bus_detach(drvr);
1232
1233 if (drvr->prot)
1234 brcmf_proto_detach(drvr);
1235
1236 brcmf_cfg80211_detach(drvr->config);
1237
1238 free_netdev(ifp->ndev);
1239 kfree(ifp);
1240 kfree(drvr_priv);
1241 }
1242 }
1243 }
1244
1245 static void __exit brcmf_module_cleanup(void)
1246 {
1247 brcmf_dbg(TRACE, "Enter\n");
1248
1249 brcmf_bus_unregister();
1250 }
1251
1252 static int __init brcmf_module_init(void)
1253 {
1254 int error;
1255
1256 brcmf_dbg(TRACE, "Enter\n");
1257
1258 error = brcmf_bus_register();
1259
1260 if (error) {
1261 brcmf_dbg(ERROR, "brcmf_bus_register failed\n");
1262 goto failed;
1263 }
1264 return 0;
1265
1266 failed:
1267 return -EINVAL;
1268 }
1269
1270 module_init(brcmf_module_init);
1271 module_exit(brcmf_module_cleanup);
1272
1273 int brcmf_os_proto_block(struct brcmf_pub *drvr)
1274 {
1275 struct brcmf_info *drvr_priv = drvr->info;
1276
1277 if (drvr_priv) {
1278 mutex_lock(&drvr_priv->proto_block);
1279 return 1;
1280 }
1281 return 0;
1282 }
1283
1284 int brcmf_os_proto_unblock(struct brcmf_pub *drvr)
1285 {
1286 struct brcmf_info *drvr_priv = drvr->info;
1287
1288 if (drvr_priv) {
1289 mutex_unlock(&drvr_priv->proto_block);
1290 return 1;
1291 }
1292
1293 return 0;
1294 }
1295
1296 static int brcmf_get_pend_8021x_cnt(struct brcmf_info *drvr_priv)
1297 {
1298 return atomic_read(&drvr_priv->pend_8021x_cnt);
1299 }
1300
1301 #define MAX_WAIT_FOR_8021X_TX 10
1302
1303 int brcmf_netdev_wait_pend8021x(struct net_device *ndev)
1304 {
1305 struct brcmf_info *drvr_priv = *(struct brcmf_info **)netdev_priv(ndev);
1306 int timeout = 10 * HZ / 1000;
1307 int ntimes = MAX_WAIT_FOR_8021X_TX;
1308 int pend = brcmf_get_pend_8021x_cnt(drvr_priv);
1309
1310 while (ntimes && pend) {
1311 if (pend) {
1312 set_current_state(TASK_INTERRUPTIBLE);
1313 schedule_timeout(timeout);
1314 set_current_state(TASK_RUNNING);
1315 ntimes--;
1316 }
1317 pend = brcmf_get_pend_8021x_cnt(drvr_priv);
1318 }
1319 return pend;
1320 }
1321
1322 #ifdef BCMDBG
1323 int brcmf_write_to_file(struct brcmf_pub *drvr, const u8 *buf, int size)
1324 {
1325 int ret = 0;
1326 struct file *fp;
1327 mm_segment_t old_fs;
1328 loff_t pos = 0;
1329
1330 /* change to KERNEL_DS address limit */
1331 old_fs = get_fs();
1332 set_fs(KERNEL_DS);
1333
1334 /* open file to write */
1335 fp = filp_open("/tmp/mem_dump", O_WRONLY | O_CREAT, 0640);
1336 if (!fp) {
1337 brcmf_dbg(ERROR, "open file error\n");
1338 ret = -1;
1339 goto exit;
1340 }
1341
1342 /* Write buf to file */
1343 fp->f_op->write(fp, (char __user *)buf, size, &pos);
1344
1345 exit:
1346 /* free buf before return */
1347 kfree(buf);
1348 /* close file before return */
1349 if (fp)
1350 filp_close(fp, current->files);
1351 /* restore previous address limit */
1352 set_fs(old_fs);
1353
1354 return ret;
1355 }
1356 #endif /* BCMDBG */
Linux kernel - Deliverables
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