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net: wireless: add brcm80211 drivers
[deliverable/linux.git] / drivers / net / wireless / brcm80211 / brcmfmac / dhd_linux.c
CommitLineData
5b435de0
AS		 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 <net/cfg80211.h>
35#include <net/rtnetlink.h>
36#include <defs.h>
37#include <brcmu_utils.h>
38#include <brcmu_wifi.h>
39
40#include "dhd.h"
41#include "dhd_bus.h"
42#include "dhd_proto.h"
43#include "dhd_dbg.h"
44#include "wl_cfg80211.h"
45#include "bcmchip.h"
46
47MODULE_AUTHOR("Broadcom Corporation");
48MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN fullmac driver.");
49MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN fullmac cards");
50MODULE_LICENSE("Dual BSD/GPL");
51
52
53/* Interface control information */
54struct brcmf_if {
55 struct brcmf_info *info; /* back pointer to brcmf_info */
56 /* OS/stack specifics */
57 struct net_device *ndev;
58 struct net_device_stats stats;
59 int idx; /* iface idx in dongle */
60 int state; /* interface state */
61 u8 mac_addr[ETH_ALEN]; /* assigned MAC address */
62};
63
64/* Local private structure (extension of pub) */
65struct brcmf_info {
66 struct brcmf_pub pub;
67
68 /* OS/stack specifics */
69 struct brcmf_if *iflist[BRCMF_MAX_IFS];
70
71 struct mutex proto_block;
72
73 struct work_struct setmacaddr_work;
74 struct work_struct multicast_work;
75 u8 macvalue[ETH_ALEN];
76 atomic_t pend_8021x_cnt;
77};
78
79/* Error bits */
80module_param(brcmf_msg_level, int, 0);
81
82
83static int brcmf_net2idx(struct brcmf_info *drvr_priv, struct net_device *ndev)
84{
85 int i = 0;
86
87 while (i < BRCMF_MAX_IFS) {
88 if (drvr_priv->iflist[i] && drvr_priv->iflist[i]->ndev == ndev)
89 return i;
90 i++;
91 }
92
93 return BRCMF_BAD_IF;
94}
95
96int brcmf_ifname2idx(struct brcmf_info *drvr_priv, char *name)
97{
98 int i = BRCMF_MAX_IFS;
99 struct brcmf_if *ifp;
100
101 if (name == NULL || *name == '\0')
102 return 0;
103
104 while (--i > 0) {
105 ifp = drvr_priv->iflist[i];
106 if (ifp && !strncmp(ifp->ndev->name, name, IFNAMSIZ))
107 break;
108 }
109
110 brcmf_dbg(TRACE, "return idx %d for \"%s\"\n", i, name);
111
112 return i; /* default - the primary interface */
113}
114
115char *brcmf_ifname(struct brcmf_pub *drvr, int ifidx)
116{
117 struct brcmf_info *drvr_priv = drvr->info;
118
119 if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) {
120 brcmf_dbg(ERROR, "ifidx %d out of range\n", ifidx);
121 return "<if_bad>";
122 }
123
124 if (drvr_priv->iflist[ifidx] == NULL) {
125 brcmf_dbg(ERROR, "null i/f %d\n", ifidx);
126 return "<if_null>";
127 }
128
129 if (drvr_priv->iflist[ifidx]->ndev)
130 return drvr_priv->iflist[ifidx]->ndev->name;
131
132 return "<if_none>";
133}
134
135static void _brcmf_set_multicast_list(struct work_struct *work)
136{
137 struct net_device *ndev;
138 struct netdev_hw_addr *ha;
139 u32 allmulti, cnt;
140 __le32 cnt_le;
141 __le32 allmulti_le;
142
143 struct brcmf_dcmd dcmd;
144 char *buf, *bufp;
145 uint buflen;
146 int ret;
147
148 struct brcmf_info *drvr_priv = container_of(work, struct brcmf_info,
149 multicast_work);
150
151 ndev = drvr_priv->iflist[0]->ndev;
152 cnt = netdev_mc_count(ndev);
153
154 /* Determine initial value of allmulti flag */
155 allmulti = (ndev->flags & IFF_ALLMULTI) ? true : false;
156
157 /* Send down the multicast list first. */
158
159 buflen = sizeof("mcast_list") + sizeof(cnt) + (cnt * ETH_ALEN);
160 bufp = buf = kmalloc(buflen, GFP_ATOMIC);
161 if (!bufp)
162 return;
163
164 strcpy(bufp, "mcast_list");
165 bufp += strlen("mcast_list") + 1;
166
167 cnt_le = cpu_to_le32(cnt);
168 memcpy(bufp, &cnt_le, sizeof(cnt));
169 bufp += sizeof(cnt_le);
170
171 netdev_for_each_mc_addr(ha, ndev) {
172 if (!cnt)
173 break;
174 memcpy(bufp, ha->addr, ETH_ALEN);
175 bufp += ETH_ALEN;
176 cnt--;
177 }
178
179 memset(&dcmd, 0, sizeof(dcmd));
180 dcmd.cmd = BRCMF_C_SET_VAR;
181 dcmd.buf = buf;
182 dcmd.len = buflen;
183 dcmd.set = true;
184
185 ret = brcmf_proto_dcmd(&drvr_priv->pub, 0, &dcmd, dcmd.len);
186 if (ret < 0) {
187 brcmf_dbg(ERROR, "%s: set mcast_list failed, cnt %d\n",
188 brcmf_ifname(&drvr_priv->pub, 0), cnt);
189 allmulti = cnt ? true : allmulti;
190 }
191
192 kfree(buf);
193
194 /* Now send the allmulti setting. This is based on the setting in the
195 * net_device flags, but might be modified above to be turned on if we
196 * were trying to set some addresses and dongle rejected it...
197 */
198
199 buflen = sizeof("allmulti") + sizeof(allmulti);
200 buf = kmalloc(buflen, GFP_ATOMIC);
201 if (!buf)
202 return;
203
204 allmulti_le = cpu_to_le32(allmulti);
205
206 if (!brcmu_mkiovar
207 ("allmulti", (void *)&allmulti_le,
208 sizeof(allmulti_le), buf, buflen)) {
209 brcmf_dbg(ERROR, "%s: mkiovar failed for allmulti, datalen %d buflen %u\n",
210 brcmf_ifname(&drvr_priv->pub, 0),
211 (int)sizeof(allmulti), buflen);
212 kfree(buf);
213 return;
214 }
215
216 memset(&dcmd, 0, sizeof(dcmd));
217 dcmd.cmd = BRCMF_C_SET_VAR;
218 dcmd.buf = buf;
219 dcmd.len = buflen;
220 dcmd.set = true;
221
222 ret = brcmf_proto_dcmd(&drvr_priv->pub, 0, &dcmd, dcmd.len);
223 if (ret < 0) {
224 brcmf_dbg(ERROR, "%s: set allmulti %d failed\n",
225 brcmf_ifname(&drvr_priv->pub, 0),
226 le32_to_cpu(allmulti_le));
227 }
228
229 kfree(buf);
230
231 /* Finally, pick up the PROMISC flag as well, like the NIC
232 driver does */
233
234 allmulti = (ndev->flags & IFF_PROMISC) ? true : false;
235 allmulti_le = cpu_to_le32(allmulti);
236
237 memset(&dcmd, 0, sizeof(dcmd));
238 dcmd.cmd = BRCMF_C_SET_PROMISC;
239 dcmd.buf = &allmulti_le;
240 dcmd.len = sizeof(allmulti_le);
241 dcmd.set = true;
242
243 ret = brcmf_proto_dcmd(&drvr_priv->pub, 0, &dcmd, dcmd.len);
244 if (ret < 0) {
245 brcmf_dbg(ERROR, "%s: set promisc %d failed\n",
246 brcmf_ifname(&drvr_priv->pub, 0),
247 le32_to_cpu(allmulti_le));
248 }
249}
250
251static void
252_brcmf_set_mac_address(struct work_struct *work)
253{
254 char buf[32];
255 struct brcmf_dcmd dcmd;
256 int ret;
257
258 struct brcmf_info *drvr_priv = container_of(work, struct brcmf_info,
259 setmacaddr_work);
260
261 brcmf_dbg(TRACE, "enter\n");
262 if (!brcmu_mkiovar("cur_etheraddr", (char *)drvr_priv->macvalue,
263 ETH_ALEN, buf, 32)) {
264 brcmf_dbg(ERROR, "%s: mkiovar failed for cur_etheraddr\n",
265 brcmf_ifname(&drvr_priv->pub, 0));
266 return;
267 }
268 memset(&dcmd, 0, sizeof(dcmd));
269 dcmd.cmd = BRCMF_C_SET_VAR;
270 dcmd.buf = buf;
271 dcmd.len = 32;
272 dcmd.set = true;
273
274 ret = brcmf_proto_dcmd(&drvr_priv->pub, 0, &dcmd, dcmd.len);
275 if (ret < 0)
276 brcmf_dbg(ERROR, "%s: set cur_etheraddr failed\n",
277 brcmf_ifname(&drvr_priv->pub, 0));
278 else
279 memcpy(drvr_priv->iflist[0]->ndev->dev_addr,
280 drvr_priv->macvalue, ETH_ALEN);
281
282 return;
283}
284
285static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr)
286{
287 struct brcmf_info *drvr_priv = *(struct brcmf_info **)
288 netdev_priv(ndev);
289 struct sockaddr *sa = (struct sockaddr *)addr;
290 int ifidx;
291
292 ifidx = brcmf_net2idx(drvr_priv, ndev);
293 if (ifidx == BRCMF_BAD_IF)
294 return -1;
295
296 memcpy(&drvr_priv->macvalue, sa->sa_data, ETH_ALEN);
297 schedule_work(&drvr_priv->setmacaddr_work);
298 return 0;
299}
300
301static void brcmf_netdev_set_multicast_list(struct net_device *ndev)
302{
303 struct brcmf_info *drvr_priv = *(struct brcmf_info **)
304 netdev_priv(ndev);
305 int ifidx;
306
307 ifidx = brcmf_net2idx(drvr_priv, ndev);
308 if (ifidx == BRCMF_BAD_IF)
309 return;
310
311 schedule_work(&drvr_priv->multicast_work);
312}
313
314int brcmf_sendpkt(struct brcmf_pub *drvr, int ifidx, struct sk_buff *pktbuf)
315{
316 struct brcmf_info *drvr_priv = drvr->info;
317
318 /* Reject if down */
319 if (!drvr->up || (drvr->busstate == BRCMF_BUS_DOWN))
320 return -ENODEV;
321
322 /* Update multicast statistic */
323 if (pktbuf->len >= ETH_ALEN) {
324 u8 *pktdata = (u8 *) (pktbuf->data);
325 struct ethhdr *eh = (struct ethhdr *)pktdata;
326
327 if (is_multicast_ether_addr(eh->h_dest))
328 drvr->tx_multicast++;
329 if (ntohs(eh->h_proto) == ETH_P_PAE)
330 atomic_inc(&drvr_priv->pend_8021x_cnt);
331 }
332
333 /* If the protocol uses a data header, apply it */
334 brcmf_proto_hdrpush(drvr, ifidx, pktbuf);
335
336 /* Use bus module to send data frame */
337 return brcmf_sdbrcm_bus_txdata(drvr->bus, pktbuf);
338}
339
340static int brcmf_netdev_start_xmit(struct sk_buff *skb, struct net_device *ndev)
341{
342 int ret;
343 struct brcmf_info *drvr_priv = *(struct brcmf_info **)
344 netdev_priv(ndev);
345 int ifidx;
346
347 brcmf_dbg(TRACE, "Enter\n");
348
349 /* Reject if down */
350 if (!drvr_priv->pub.up || (drvr_priv->pub.busstate == BRCMF_BUS_DOWN)) {
351 brcmf_dbg(ERROR, "xmit rejected pub.up=%d busstate=%d\n",
352 drvr_priv->pub.up, drvr_priv->pub.busstate);
353 netif_stop_queue(ndev);
354 return -ENODEV;
355 }
356
357 ifidx = brcmf_net2idx(drvr_priv, ndev);
358 if (ifidx == BRCMF_BAD_IF) {
359 brcmf_dbg(ERROR, "bad ifidx %d\n", ifidx);
360 netif_stop_queue(ndev);
361 return -ENODEV;
362 }
363
364 /* Make sure there's enough room for any header */
365 if (skb_headroom(skb) < drvr_priv->pub.hdrlen) {
366 struct sk_buff *skb2;
367
368 brcmf_dbg(INFO, "%s: insufficient headroom\n",
369 brcmf_ifname(&drvr_priv->pub, ifidx));
370 drvr_priv->pub.tx_realloc++;
371 skb2 = skb_realloc_headroom(skb, drvr_priv->pub.hdrlen);
372 dev_kfree_skb(skb);
373 skb = skb2;
374 if (skb == NULL) {
375 brcmf_dbg(ERROR, "%s: skb_realloc_headroom failed\n",
376 brcmf_ifname(&drvr_priv->pub, ifidx));
377 ret = -ENOMEM;
378 goto done;
379 }
380 }
381
382 ret = brcmf_sendpkt(&drvr_priv->pub, ifidx, skb);
383
384done:
385 if (ret)
386 drvr_priv->pub.dstats.tx_dropped++;
387 else
388 drvr_priv->pub.tx_packets++;
389
390 /* Return ok: we always eat the packet */
391 return 0;
392}
393
394void brcmf_txflowcontrol(struct brcmf_pub *drvr, int ifidx, bool state)
395{
396 struct net_device *ndev;
397 struct brcmf_info *drvr_priv = drvr->info;
398
399 brcmf_dbg(TRACE, "Enter\n");
400
401 drvr->txoff = state;
402 ndev = drvr_priv->iflist[ifidx]->ndev;
403 if (state == ON)
404 netif_stop_queue(ndev);
405 else
406 netif_wake_queue(ndev);
407}
408
409static int brcmf_host_event(struct brcmf_info *drvr_priv, int *ifidx,
410 void *pktdata, struct brcmf_event_msg *event,
411 void **data)
412{
413 int bcmerror = 0;
414
415 bcmerror = brcmf_c_host_event(drvr_priv, ifidx, pktdata, event, data);
416 if (bcmerror != 0)
417 return bcmerror;
418
419 if (drvr_priv->iflist[*ifidx]->ndev)
420 brcmf_cfg80211_event(drvr_priv->iflist[*ifidx]->ndev,
421 event, *data);
422
423 return bcmerror;
424}
425
426void brcmf_rx_frame(struct brcmf_pub *drvr, int ifidx, struct sk_buff *skb,
427 int numpkt)
428{
429 struct brcmf_info *drvr_priv = drvr->info;
430 unsigned char *eth;
431 uint len;
432 void *data;
433 struct sk_buff *pnext, *save_pktbuf;
434 int i;
435 struct brcmf_if *ifp;
436 struct brcmf_event_msg event;
437
438 brcmf_dbg(TRACE, "Enter\n");
439
440 save_pktbuf = skb;
441
442 for (i = 0; skb && i < numpkt; i++, skb = pnext) {
443
444 pnext = skb->next;
445 skb->next = NULL;
446
447 /* Get the protocol, maintain skb around eth_type_trans()
448 * The main reason for this hack is for the limitation of
449 * Linux 2.4 where 'eth_type_trans' uses the
450 * 'net->hard_header_len'
451 * to perform skb_pull inside vs ETH_HLEN. Since to avoid
452 * coping of the packet coming from the network stack to add
453 * BDC, Hardware header etc, during network interface
454 * registration
455 * we set the 'net->hard_header_len' to ETH_HLEN + extra space
456 * required
457 * for BDC, Hardware header etc. and not just the ETH_HLEN
458 */
459 eth = skb->data;
460 len = skb->len;
461
462 ifp = drvr_priv->iflist[ifidx];
463 if (ifp == NULL)
464 ifp = drvr_priv->iflist[0];
465
466 skb->dev = ifp->ndev;
467 skb->protocol = eth_type_trans(skb, skb->dev);
468
469 if (skb->pkt_type == PACKET_MULTICAST)
470 drvr_priv->pub.rx_multicast++;
471
472 skb->data = eth;
473 skb->len = len;
474
475 /* Strip header, count, deliver upward */
476 skb_pull(skb, ETH_HLEN);
477
478 /* Process special event packets and then discard them */
479 if (ntohs(skb->protocol) == ETH_P_LINK_CTL)
480 brcmf_host_event(drvr_priv, &ifidx,
481 skb_mac_header(skb),
482 &event, &data);
483
484 if (drvr_priv->iflist[ifidx] &&
485 !drvr_priv->iflist[ifidx]->state)
486 ifp = drvr_priv->iflist[ifidx];
487
488 if (ifp->ndev)
489 ifp->ndev->last_rx = jiffies;
490
491 drvr->dstats.rx_bytes += skb->len;
492 drvr->rx_packets++; /* Local count */
493
494 if (in_interrupt())
495 netif_rx(skb);
496 else
497 /* If the receive is not processed inside an ISR,
498 * the softirqd must be woken explicitly to service
499 * the NET_RX_SOFTIRQ. In 2.6 kernels, this is handled
500 * by netif_rx_ni(), but in earlier kernels, we need
501 * to do it manually.
502 */
503 netif_rx_ni(skb);
504 }
505}
506
507void brcmf_txcomplete(struct brcmf_pub *drvr, struct sk_buff *txp, bool success)
508{
509 uint ifidx;
510 struct brcmf_info *drvr_priv = drvr->info;
511 struct ethhdr *eh;
512 u16 type;
513
514 brcmf_proto_hdrpull(drvr, &ifidx, txp);
515
516 eh = (struct ethhdr *)(txp->data);
517 type = ntohs(eh->h_proto);
518
519 if (type == ETH_P_PAE)
520 atomic_dec(&drvr_priv->pend_8021x_cnt);
521
522}
523
524static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev)
525{
526 struct brcmf_info *drvr_priv = *(struct brcmf_info **)
527 netdev_priv(ndev);
528 struct brcmf_if *ifp;
529 int ifidx;
530
531 brcmf_dbg(TRACE, "Enter\n");
532
533 ifidx = brcmf_net2idx(drvr_priv, ndev);
534 if (ifidx == BRCMF_BAD_IF)
535 return NULL;
536
537 ifp = drvr_priv->iflist[ifidx];
538
539 if (drvr_priv->pub.up)
540 /* Use the protocol to get dongle stats */
541 brcmf_proto_dstats(&drvr_priv->pub);
542
543 /* Copy dongle stats to net device stats */
544 ifp->stats.rx_packets = drvr_priv->pub.dstats.rx_packets;
545 ifp->stats.tx_packets = drvr_priv->pub.dstats.tx_packets;
546 ifp->stats.rx_bytes = drvr_priv->pub.dstats.rx_bytes;
547 ifp->stats.tx_bytes = drvr_priv->pub.dstats.tx_bytes;
548 ifp->stats.rx_errors = drvr_priv->pub.dstats.rx_errors;
549 ifp->stats.tx_errors = drvr_priv->pub.dstats.tx_errors;
550 ifp->stats.rx_dropped = drvr_priv->pub.dstats.rx_dropped;
551 ifp->stats.tx_dropped = drvr_priv->pub.dstats.tx_dropped;
552 ifp->stats.multicast = drvr_priv->pub.dstats.multicast;
553
554 return &ifp->stats;
555}
556
557/* Retrieve current toe component enables, which are kept
558 as a bitmap in toe_ol iovar */
559static int brcmf_toe_get(struct brcmf_info *drvr_priv, int ifidx, u32 *toe_ol)
560{
561 struct brcmf_dcmd dcmd;
562 char buf[32];
563 int ret;
564
565 memset(&dcmd, 0, sizeof(dcmd));
566
567 dcmd.cmd = BRCMF_C_GET_VAR;
568 dcmd.buf = buf;
569 dcmd.len = (uint) sizeof(buf);
570 dcmd.set = false;
571
572 strcpy(buf, "toe_ol");
573 ret = brcmf_proto_dcmd(&drvr_priv->pub, ifidx, &dcmd, dcmd.len);
574 if (ret < 0) {
575 /* Check for older dongle image that doesn't support toe_ol */
576 if (ret == -EIO) {
577 brcmf_dbg(ERROR, "%s: toe not supported by device\n",
578 brcmf_ifname(&drvr_priv->pub, ifidx));
579 return -EOPNOTSUPP;
580 }
581
582 brcmf_dbg(INFO, "%s: could not get toe_ol: ret=%d\n",
583 brcmf_ifname(&drvr_priv->pub, ifidx), ret);
584 return ret;
585 }
586
587 memcpy(toe_ol, buf, sizeof(u32));
588 return 0;
589}
590
591/* Set current toe component enables in toe_ol iovar,
592 and set toe global enable iovar */
593static int brcmf_toe_set(struct brcmf_info *drvr_priv, int ifidx, u32 toe_ol)
594{
595 struct brcmf_dcmd dcmd;
596 char buf[32];
597 int toe, ret;
598
599 memset(&dcmd, 0, sizeof(dcmd));
600
601 dcmd.cmd = BRCMF_C_SET_VAR;
602 dcmd.buf = buf;
603 dcmd.len = (uint) sizeof(buf);
604 dcmd.set = true;
605
606 /* Set toe_ol as requested */
607
608 strcpy(buf, "toe_ol");
609 memcpy(&buf[sizeof("toe_ol")], &toe_ol, sizeof(u32));
610
611 ret = brcmf_proto_dcmd(&drvr_priv->pub, ifidx, &dcmd, dcmd.len);
612 if (ret < 0) {
613 brcmf_dbg(ERROR, "%s: could not set toe_ol: ret=%d\n",
614 brcmf_ifname(&drvr_priv->pub, ifidx), ret);
615 return ret;
616 }
617
618 /* Enable toe globally only if any components are enabled. */
619
620 toe = (toe_ol != 0);
621
622 strcpy(buf, "toe");
623 memcpy(&buf[sizeof("toe")], &toe, sizeof(u32));
624
625 ret = brcmf_proto_dcmd(&drvr_priv->pub, ifidx, &dcmd, dcmd.len);
626 if (ret < 0) {
627 brcmf_dbg(ERROR, "%s: could not set toe: ret=%d\n",
628 brcmf_ifname(&drvr_priv->pub, ifidx), ret);
629 return ret;
630 }
631
632 return 0;
633}
634
635static void brcmf_ethtool_get_drvinfo(struct net_device *ndev,
636 struct ethtool_drvinfo *info)
637{
638 struct brcmf_info *drvr_priv = *(struct brcmf_info **)
639 netdev_priv(ndev);
640
641 sprintf(info->driver, KBUILD_MODNAME);
642 sprintf(info->version, "%lu", drvr_priv->pub.drv_version);
643 sprintf(info->fw_version, "%s", BCM4329_FW_NAME);
644 sprintf(info->bus_info, "%s",
645 dev_name(brcmf_bus_get_device(drvr_priv->pub.bus)));
646}
647
648static struct ethtool_ops brcmf_ethtool_ops = {
649 .get_drvinfo = brcmf_ethtool_get_drvinfo
650};
651
652static int brcmf_ethtool(struct brcmf_info *drvr_priv, void __user *uaddr)
653{
654 struct ethtool_drvinfo info;
655 char drvname[sizeof(info.driver)];
656 u32 cmd;
657 struct ethtool_value edata;
658 u32 toe_cmpnt, csum_dir;
659 int ret;
660
661 brcmf_dbg(TRACE, "Enter\n");
662
663 /* all ethtool calls start with a cmd word */
664 if (copy_from_user(&cmd, uaddr, sizeof(u32)))
665 return -EFAULT;
666
667 switch (cmd) {
668 case ETHTOOL_GDRVINFO:
669 /* Copy out any request driver name */
670 if (copy_from_user(&info, uaddr, sizeof(info)))
671 return -EFAULT;
672 strncpy(drvname, info.driver, sizeof(info.driver));
673 drvname[sizeof(info.driver) - 1] = '\0';
674
675 /* clear struct for return */
676 memset(&info, 0, sizeof(info));
677 info.cmd = cmd;
678
679 /* if requested, identify ourselves */
680 if (strcmp(drvname, "?dhd") == 0) {
681 sprintf(info.driver, "dhd");
682 strcpy(info.version, BRCMF_VERSION_STR);
683 }
684
685 /* otherwise, require dongle to be up */
686 else if (!drvr_priv->pub.up) {
687 brcmf_dbg(ERROR, "dongle is not up\n");
688 return -ENODEV;
689 }
690
691 /* finally, report dongle driver type */
692 else if (drvr_priv->pub.iswl)
693 sprintf(info.driver, "wl");
694 else
695 sprintf(info.driver, "xx");
696
697 sprintf(info.version, "%lu", drvr_priv->pub.drv_version);
698 if (copy_to_user(uaddr, &info, sizeof(info)))
699 return -EFAULT;
700 brcmf_dbg(CTL, "given %*s, returning %s\n",
701 (int)sizeof(drvname), drvname, info.driver);
702 break;
703
704 /* Get toe offload components from dongle */
705 case ETHTOOL_GRXCSUM:
706 case ETHTOOL_GTXCSUM:
707 ret = brcmf_toe_get(drvr_priv, 0, &toe_cmpnt);
708 if (ret < 0)
709 return ret;
710
711 csum_dir =
712 (cmd == ETHTOOL_GTXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
713
714 edata.cmd = cmd;
715 edata.data = (toe_cmpnt & csum_dir) ? 1 : 0;
716
717 if (copy_to_user(uaddr, &edata, sizeof(edata)))
718 return -EFAULT;
719 break;
720
721 /* Set toe offload components in dongle */
722 case ETHTOOL_SRXCSUM:
723 case ETHTOOL_STXCSUM:
724 if (copy_from_user(&edata, uaddr, sizeof(edata)))
725 return -EFAULT;
726
727 /* Read the current settings, update and write back */
728 ret = brcmf_toe_get(drvr_priv, 0, &toe_cmpnt);
729 if (ret < 0)
730 return ret;
731
732 csum_dir =
733 (cmd == ETHTOOL_STXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
734
735 if (edata.data != 0)
736 toe_cmpnt |= csum_dir;
737 else
738 toe_cmpnt &= ~csum_dir;
739
740 ret = brcmf_toe_set(drvr_priv, 0, toe_cmpnt);
741 if (ret < 0)
742 return ret;
743
744 /* If setting TX checksum mode, tell Linux the new mode */
745 if (cmd == ETHTOOL_STXCSUM) {
746 if (edata.data)
747 drvr_priv->iflist[0]->ndev->features |=
748 NETIF_F_IP_CSUM;
749 else
750 drvr_priv->iflist[0]->ndev->features &=
751 ~NETIF_F_IP_CSUM;
752 }
753
754 break;
755
756 default:
757 return -EOPNOTSUPP;
758 }
759
760 return 0;
761}
762
763static int brcmf_netdev_ioctl_entry(struct net_device *ndev, struct ifreq *ifr,
764 int cmd)
765{
766 struct brcmf_info *drvr_priv = *(struct brcmf_info **)
767 netdev_priv(ndev);
768 int ifidx;
769
770 ifidx = brcmf_net2idx(drvr_priv, ndev);
771 brcmf_dbg(TRACE, "ifidx %d, cmd 0x%04x\n", ifidx, cmd);
772
773 if (ifidx == BRCMF_BAD_IF)
774 return -1;
775
776 if (cmd == SIOCETHTOOL)
777 return brcmf_ethtool(drvr_priv, ifr->ifr_data);
778
779 return -EOPNOTSUPP;
780}
781
782/* called only from within this driver. Sends a command to the dongle. */
783s32 brcmf_exec_dcmd(struct net_device *ndev, u32 cmd, void *arg, u32 len)
784{
785 struct brcmf_dcmd dcmd;
786 s32 err = 0;
787 int buflen = 0;
788 bool is_set_key_cmd;
789 struct brcmf_info *drvr_priv = *(struct brcmf_info **)
790 netdev_priv(ndev);
791 int ifidx;
792
793 memset(&dcmd, 0, sizeof(dcmd));
794 dcmd.cmd = cmd;
795 dcmd.buf = arg;
796 dcmd.len = len;
797
798 ifidx = brcmf_net2idx(drvr_priv, ndev);
799
800 if (dcmd.buf != NULL)
801 buflen = min_t(uint, dcmd.len, BRCMF_DCMD_MAXLEN);
802
803 /* send to dongle (must be up, and wl) */
804 if ((drvr_priv->pub.busstate != BRCMF_BUS_DATA)) {
805 brcmf_dbg(ERROR, "DONGLE_DOWN\n");
806 err = -EIO;
807 goto done;
808 }
809
810 if (!drvr_priv->pub.iswl) {
811 err = -EIO;
812 goto done;
813 }
814
815 /*
816 * Intercept BRCMF_C_SET_KEY CMD - serialize M4 send and
817 * set key CMD to prevent M4 encryption.
818 */
819 is_set_key_cmd = ((dcmd.cmd == BRCMF_C_SET_KEY) ||
820 ((dcmd.cmd == BRCMF_C_SET_VAR) &&
821 !(strncmp("wsec_key", dcmd.buf, 9))) ||
822 ((dcmd.cmd == BRCMF_C_SET_VAR) &&
823 !(strncmp("bsscfg:wsec_key", dcmd.buf, 15))));
824 if (is_set_key_cmd)
825 brcmf_netdev_wait_pend8021x(ndev);
826
827 err = brcmf_proto_dcmd(&drvr_priv->pub, ifidx, &dcmd, buflen);
828
829done:
830 if (err > 0)
831 err = 0;
832
833 return err;
834}
835
836static int brcmf_netdev_stop(struct net_device *ndev)
837{
838 struct brcmf_pub *drvr = *(struct brcmf_pub **) netdev_priv(ndev);
839
840 brcmf_dbg(TRACE, "Enter\n");
841 brcmf_cfg80211_down(drvr->config);
842 if (drvr->up == 0)
843 return 0;
844
845 /* Set state and stop OS transmissions */
846 drvr->up = 0;
847 netif_stop_queue(ndev);
848
849 return 0;
850}
851
852static int brcmf_netdev_open(struct net_device *ndev)
853{
854 struct brcmf_info *drvr_priv = *(struct brcmf_info **)
855 netdev_priv(ndev);
856 u32 toe_ol;
857 int ifidx = brcmf_net2idx(drvr_priv, ndev);
858 s32 ret = 0;
859
860 brcmf_dbg(TRACE, "ifidx %d\n", ifidx);
861
862 if (ifidx == 0) { /* do it only for primary eth0 */
863
864 /* try to bring up bus */
865 ret = brcmf_bus_start(&drvr_priv->pub);
866 if (ret != 0) {
867 brcmf_dbg(ERROR, "failed with code %d\n", ret);
868 return -1;
869 }
870 atomic_set(&drvr_priv->pend_8021x_cnt, 0);
871
872 memcpy(ndev->dev_addr, drvr_priv->pub.mac, ETH_ALEN);
873
874 /* Get current TOE mode from dongle */
875 if (brcmf_toe_get(drvr_priv, ifidx, &toe_ol) >= 0
876 && (toe_ol & TOE_TX_CSUM_OL) != 0)
877 drvr_priv->iflist[ifidx]->ndev->features |=
878 NETIF_F_IP_CSUM;
879 else
880 drvr_priv->iflist[ifidx]->ndev->features &=
881 ~NETIF_F_IP_CSUM;
882 }
883 /* Allow transmit calls */
884 netif_start_queue(ndev);
885 drvr_priv->pub.up = 1;
886 if (brcmf_cfg80211_up(drvr_priv->pub.config)) {
887 brcmf_dbg(ERROR, "failed to bring up cfg80211\n");
888 return -1;
889 }
890
891 return ret;
892}
893
894int
895brcmf_add_if(struct brcmf_info *drvr_priv, int ifidx, struct net_device *ndev,
896 char *name, u8 *mac_addr, u32 flags, u8 bssidx)
897{
898 struct brcmf_if *ifp;
899 int ret = 0, err = 0;
900
901 brcmf_dbg(TRACE, "idx %d, handle->%p\n", ifidx, ndev);
902
903 ifp = drvr_priv->iflist[ifidx];
904 if (!ifp) {
905 ifp = kmalloc(sizeof(struct brcmf_if), GFP_ATOMIC);
906 if (!ifp)
907 return -ENOMEM;
908 }
909
910 memset(ifp, 0, sizeof(struct brcmf_if));
911 ifp->info = drvr_priv;
912 drvr_priv->iflist[ifidx] = ifp;
913 if (mac_addr != NULL)
914 memcpy(&ifp->mac_addr, mac_addr, ETH_ALEN);
915
916 if (ndev == NULL) {
917 ifp->state = BRCMF_E_IF_ADD;
918 ifp->idx = ifidx;
919 /*
920 * Delete the existing interface before overwriting it
921 * in case we missed the BRCMF_E_IF_DEL event.
922 */
923 if (ifp->ndev != NULL) {
924 brcmf_dbg(ERROR, "ERROR: netdev:%s already exists, try free & unregister\n",
925 ifp->ndev->name);
926 netif_stop_queue(ifp->ndev);
927 unregister_netdev(ifp->ndev);
928 free_netdev(ifp->ndev);
929 }
930
931 /* Allocate netdev, including space for private structure */
932 ifp->ndev = alloc_netdev(sizeof(drvr_priv), "wlan%d",
933 ether_setup);
934 if (!ifp->ndev) {
935 brcmf_dbg(ERROR, "OOM - alloc_netdev\n");
936 ret = -ENOMEM;
937 }
938
939 if (ret == 0) {
940 memcpy(netdev_priv(ifp->ndev), &drvr_priv,
941 sizeof(drvr_priv));
942 err = brcmf_net_attach(&drvr_priv->pub, ifp->idx);
943 if (err != 0) {
944 brcmf_dbg(ERROR, "brcmf_net_attach failed, err %d\n",
945 err);
946 ret = -EOPNOTSUPP;
947 } else {
948 brcmf_dbg(TRACE, " ==== pid:%x, net_device for if:%s created ===\n",
949 current->pid, ifp->ndev->name);
950 ifp->state = 0;
951 }
952 }
953
954 if (ret < 0) {
955 if (ifp->ndev)
956 free_netdev(ifp->ndev);
957
958 drvr_priv->iflist[ifp->idx] = NULL;
959 kfree(ifp);
960 }
961 } else
962 ifp->ndev = ndev;
963
964 return 0;
965}
966
967void brcmf_del_if(struct brcmf_info *drvr_priv, int ifidx)
968{
969 struct brcmf_if *ifp;
970
971 brcmf_dbg(TRACE, "idx %d\n", ifidx);
972
973 ifp = drvr_priv->iflist[ifidx];
974 if (!ifp) {
975 brcmf_dbg(ERROR, "Null interface\n");
976 return;
977 }
978
979 ifp->state = BRCMF_E_IF_DEL;
980 ifp->idx = ifidx;
981 if (ifp->ndev != NULL) {
982 netif_stop_queue(ifp->ndev);
983 unregister_netdev(ifp->ndev);
984 free_netdev(ifp->ndev);
985 drvr_priv->iflist[ifidx] = NULL;
986 kfree(ifp);
987 }
988}
989
990struct brcmf_pub *brcmf_attach(struct brcmf_bus *bus, uint bus_hdrlen)
991{
992 struct brcmf_info *drvr_priv = NULL;
993 struct net_device *ndev;
994
995 brcmf_dbg(TRACE, "Enter\n");
996
997 /* Allocate netdev, including space for private structure */
998 ndev = alloc_netdev(sizeof(drvr_priv), "wlan%d", ether_setup);
999 if (!ndev) {
1000 brcmf_dbg(ERROR, "OOM - alloc_netdev\n");
1001 goto fail;
1002 }
1003
1004 /* Allocate primary brcmf_info */
1005 drvr_priv = kzalloc(sizeof(struct brcmf_info), GFP_ATOMIC);
1006 if (!drvr_priv)
1007 goto fail;
1008
1009 /*
1010 * Save the brcmf_info into the priv
1011 */
1012 memcpy(netdev_priv(ndev), &drvr_priv, sizeof(drvr_priv));
1013
1014 if (brcmf_add_if(drvr_priv, 0, ndev, ndev->name, NULL, 0, 0) ==
1015 BRCMF_BAD_IF)
1016 goto fail;
1017
1018 ndev->netdev_ops = NULL;
1019 mutex_init(&drvr_priv->proto_block);
1020
1021 /* Link to info module */
1022 drvr_priv->pub.info = drvr_priv;
1023
1024 /* Link to bus module */
1025 drvr_priv->pub.bus = bus;
1026 drvr_priv->pub.hdrlen = bus_hdrlen;
1027
1028 /* Attach and link in the protocol */
1029 if (brcmf_proto_attach(&drvr_priv->pub) != 0) {
1030 brcmf_dbg(ERROR, "brcmf_prot_attach failed\n");
1031 goto fail;
1032 }
1033
1034 /* Attach and link in the cfg80211 */
1035 drvr_priv->pub.config =
1036 brcmf_cfg80211_attach(ndev,
1037 brcmf_bus_get_device(bus),
1038 &drvr_priv->pub);
1039 if (drvr_priv->pub.config == NULL) {
1040 brcmf_dbg(ERROR, "wl_cfg80211_attach failed\n");
1041 goto fail;
1042 }
1043
1044 INIT_WORK(&drvr_priv->setmacaddr_work, _brcmf_set_mac_address);
1045 INIT_WORK(&drvr_priv->multicast_work, _brcmf_set_multicast_list);
1046
1047 /*
1048 * Save the brcmf_info into the priv
1049 */
1050 memcpy(netdev_priv(ndev), &drvr_priv, sizeof(drvr_priv));
1051
1052 return &drvr_priv->pub;
1053
1054fail:
1055 if (ndev)
1056 free_netdev(ndev);
1057 if (drvr_priv)
1058 brcmf_detach(&drvr_priv->pub);
1059
1060 return NULL;
1061}
1062
1063int brcmf_bus_start(struct brcmf_pub *drvr)
1064{
1065 int ret = -1;
1066 struct brcmf_info *drvr_priv = drvr->info;
1067 /* Room for "event_msgs" + '\0' + bitvec */
1068 char iovbuf[BRCMF_EVENTING_MASK_LEN + 12];
1069
1070 brcmf_dbg(TRACE, "\n");
1071
1072 /* Bring up the bus */
1073 ret = brcmf_sdbrcm_bus_init(&drvr_priv->pub);
1074 if (ret != 0) {
1075 brcmf_dbg(ERROR, "brcmf_sdbrcm_bus_init failed %d\n", ret);
1076 return ret;
1077 }
1078
1079 /* If bus is not ready, can't come up */
1080 if (drvr_priv->pub.busstate != BRCMF_BUS_DATA) {
1081 brcmf_dbg(ERROR, "failed bus is not ready\n");
1082 return -ENODEV;
1083 }
1084
1085 brcmu_mkiovar("event_msgs", drvr->eventmask, BRCMF_EVENTING_MASK_LEN,
1086 iovbuf, sizeof(iovbuf));
1087 brcmf_proto_cdc_query_dcmd(drvr, 0, BRCMF_C_GET_VAR, iovbuf,
1088 sizeof(iovbuf));
1089 memcpy(drvr->eventmask, iovbuf, BRCMF_EVENTING_MASK_LEN);
1090
1091 setbit(drvr->eventmask, BRCMF_E_SET_SSID);
1092 setbit(drvr->eventmask, BRCMF_E_PRUNE);
1093 setbit(drvr->eventmask, BRCMF_E_AUTH);
1094 setbit(drvr->eventmask, BRCMF_E_REASSOC);
1095 setbit(drvr->eventmask, BRCMF_E_REASSOC_IND);
1096 setbit(drvr->eventmask, BRCMF_E_DEAUTH_IND);
1097 setbit(drvr->eventmask, BRCMF_E_DISASSOC_IND);
1098 setbit(drvr->eventmask, BRCMF_E_DISASSOC);
1099 setbit(drvr->eventmask, BRCMF_E_JOIN);
1100 setbit(drvr->eventmask, BRCMF_E_ASSOC_IND);
1101 setbit(drvr->eventmask, BRCMF_E_PSK_SUP);
1102 setbit(drvr->eventmask, BRCMF_E_LINK);
1103 setbit(drvr->eventmask, BRCMF_E_NDIS_LINK);
1104 setbit(drvr->eventmask, BRCMF_E_MIC_ERROR);
1105 setbit(drvr->eventmask, BRCMF_E_PMKID_CACHE);
1106 setbit(drvr->eventmask, BRCMF_E_TXFAIL);
1107 setbit(drvr->eventmask, BRCMF_E_JOIN_START);
1108 setbit(drvr->eventmask, BRCMF_E_SCAN_COMPLETE);
1109
1110/* enable dongle roaming event */
1111
1112 drvr->pktfilter_count = 1;
1113 /* Setup filter to allow only unicast */
1114 drvr->pktfilter[0] = "100 0 0 0 0x01 0x00";
1115
1116 /* Bus is ready, do any protocol initialization */
1117 ret = brcmf_proto_init(&drvr_priv->pub);
1118 if (ret < 0)
1119 return ret;
1120
1121 return 0;
1122}
1123
1124static struct net_device_ops brcmf_netdev_ops_pri = {
1125 .ndo_open = brcmf_netdev_open,
1126 .ndo_stop = brcmf_netdev_stop,
1127 .ndo_get_stats = brcmf_netdev_get_stats,
1128 .ndo_do_ioctl = brcmf_netdev_ioctl_entry,
1129 .ndo_start_xmit = brcmf_netdev_start_xmit,
1130 .ndo_set_mac_address = brcmf_netdev_set_mac_address,
1131 .ndo_set_multicast_list = brcmf_netdev_set_multicast_list
1132};
1133
1134int brcmf_net_attach(struct brcmf_pub *drvr, int ifidx)
1135{
1136 struct brcmf_info *drvr_priv = drvr->info;
1137 struct net_device *ndev;
1138 u8 temp_addr[ETH_ALEN] = {
1139 0x00, 0x90, 0x4c, 0x11, 0x22, 0x33};
1140
1141 brcmf_dbg(TRACE, "ifidx %d\n", ifidx);
1142
1143 ndev = drvr_priv->iflist[ifidx]->ndev;
1144 ndev->netdev_ops = &brcmf_netdev_ops_pri;
1145
1146 /*
1147 * We have to use the primary MAC for virtual interfaces
1148 */
1149 if (ifidx != 0) {
1150 /* for virtual interfaces use the primary MAC */
1151 memcpy(temp_addr, drvr_priv->pub.mac, ETH_ALEN);
1152
1153 }
1154
1155 if (ifidx == 1) {
1156 brcmf_dbg(TRACE, "ACCESS POINT MAC:\n");
1157 /* ACCESSPOINT INTERFACE CASE */
1158 temp_addr[0] |= 0X02; /* set bit 2 ,
1159 - Locally Administered address */
1160
1161 }
1162 ndev->hard_header_len = ETH_HLEN + drvr_priv->pub.hdrlen;
1163 ndev->ethtool_ops = &brcmf_ethtool_ops;
1164
1165 drvr_priv->pub.rxsz = ndev->mtu + ndev->hard_header_len +
1166 drvr_priv->pub.hdrlen;
1167
1168 memcpy(ndev->dev_addr, temp_addr, ETH_ALEN);
1169
1170 if (register_netdev(ndev) != 0) {
1171 brcmf_dbg(ERROR, "couldn't register the net device\n");
1172 goto fail;
1173 }
1174
1175 brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
1176
1177 return 0;
1178
1179fail:
1180 ndev->netdev_ops = NULL;
1181 return -EBADE;
1182}
1183
1184static void brcmf_bus_detach(struct brcmf_pub *drvr)
1185{
1186 struct brcmf_info *drvr_priv;
1187
1188 brcmf_dbg(TRACE, "Enter\n");
1189
1190 if (drvr) {
1191 drvr_priv = drvr->info;
1192 if (drvr_priv) {
1193 /* Stop the protocol module */
1194 brcmf_proto_stop(&drvr_priv->pub);
1195
1196 /* Stop the bus module */
1197 brcmf_sdbrcm_bus_stop(drvr_priv->pub.bus);
1198 }
1199 }
1200}
1201
1202void brcmf_detach(struct brcmf_pub *drvr)
1203{
1204 struct brcmf_info *drvr_priv;
1205
1206 brcmf_dbg(TRACE, "Enter\n");
1207
1208 if (drvr) {
1209 drvr_priv = drvr->info;
1210 if (drvr_priv) {
1211 struct brcmf_if *ifp;
1212 int i;
1213
1214 for (i = 1; i < BRCMF_MAX_IFS; i++)
1215 if (drvr_priv->iflist[i])
1216 brcmf_del_if(drvr_priv, i);
1217
1218 ifp = drvr_priv->iflist[0];
1219 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
1220 rtnl_lock();
1221 brcmf_netdev_stop(ifp->ndev);
1222 rtnl_unlock();
1223 unregister_netdev(ifp->ndev);
1224 }
1225
1226 cancel_work_sync(&drvr_priv->setmacaddr_work);
1227 cancel_work_sync(&drvr_priv->multicast_work);
1228
1229 brcmf_bus_detach(drvr);
1230
1231 if (drvr->prot)
1232 brcmf_proto_detach(drvr);
1233
1234 brcmf_cfg80211_detach(drvr->config);
1235
1236 free_netdev(ifp->ndev);
1237 kfree(ifp);
1238 kfree(drvr_priv);
1239 }
1240 }
1241}
1242
1243static void __exit brcmf_module_cleanup(void)
1244{
1245 brcmf_dbg(TRACE, "Enter\n");
1246
1247 brcmf_bus_unregister();
1248}
1249
1250static int __init brcmf_module_init(void)
1251{
1252 int error;
1253
1254 brcmf_dbg(TRACE, "Enter\n");
1255
1256 error = brcmf_bus_register();
1257
1258 if (error) {
1259 brcmf_dbg(ERROR, "brcmf_bus_register failed\n");
1260 goto failed;
1261 }
1262 return 0;
1263
1264failed:
1265 return -EINVAL;
1266}
1267
1268module_init(brcmf_module_init);
1269module_exit(brcmf_module_cleanup);
1270
1271int brcmf_os_proto_block(struct brcmf_pub *drvr)
1272{
1273 struct brcmf_info *drvr_priv = drvr->info;
1274
1275 if (drvr_priv) {
1276 mutex_lock(&drvr_priv->proto_block);
1277 return 1;
1278 }
1279 return 0;
1280}
1281
1282int brcmf_os_proto_unblock(struct brcmf_pub *drvr)
1283{
1284 struct brcmf_info *drvr_priv = drvr->info;
1285
1286 if (drvr_priv) {
1287 mutex_unlock(&drvr_priv->proto_block);
1288 return 1;
1289 }
1290
1291 return 0;
1292}
1293
1294static int brcmf_get_pend_8021x_cnt(struct brcmf_info *drvr_priv)
1295{
1296 return atomic_read(&drvr_priv->pend_8021x_cnt);
1297}
1298
1299#define MAX_WAIT_FOR_8021X_TX 10
1300
1301int brcmf_netdev_wait_pend8021x(struct net_device *ndev)
1302{
1303 struct brcmf_info *drvr_priv = *(struct brcmf_info **)netdev_priv(ndev);
1304 int timeout = 10 * HZ / 1000;
1305 int ntimes = MAX_WAIT_FOR_8021X_TX;
1306 int pend = brcmf_get_pend_8021x_cnt(drvr_priv);
1307
1308 while (ntimes && pend) {
1309 if (pend) {
1310 set_current_state(TASK_INTERRUPTIBLE);
1311 schedule_timeout(timeout);
1312 set_current_state(TASK_RUNNING);
1313 ntimes--;
1314 }
1315 pend = brcmf_get_pend_8021x_cnt(drvr_priv);
1316 }
1317 return pend;
1318}
1319
1320#ifdef BCMDBG
1321int brcmf_write_to_file(struct brcmf_pub *drvr, u8 *buf, int size)
1322{
1323 int ret = 0;
1324 struct file *fp;
1325 mm_segment_t old_fs;
1326 loff_t pos = 0;
1327
1328 /* change to KERNEL_DS address limit */
1329 old_fs = get_fs();
1330 set_fs(KERNEL_DS);
1331
1332 /* open file to write */
1333 fp = filp_open("/tmp/mem_dump", O_WRONLY | O_CREAT, 0640);
1334 if (!fp) {
1335 brcmf_dbg(ERROR, "open file error\n");
1336 ret = -1;
1337 goto exit;
1338 }
1339
1340 /* Write buf to file */
1341 fp->f_op->write(fp, buf, size, &pos);
1342
1343exit:
1344 /* free buf before return */
1345 kfree(buf);
1346 /* close file before return */
1347 if (fp)
1348 filp_close(fp, current->files);
1349 /* restore previous address limit */
1350 set_fs(old_fs);
1351
1352 return ret;
1353}
1354#endif /* BCMDBG */
Linux kernel - Deliverables
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