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77#define DRIVER_NAME "orinoco"
78
79#include <linux/module.h>
80#include <linux/kernel.h>
81#include <linux/init.h>
82#include <linux/delay.h>
83#include <linux/device.h>
84#include <linux/netdevice.h>
85#include <linux/etherdevice.h>
86#include <linux/ethtool.h>
87#include <linux/suspend.h>
88#include <linux/if_arp.h>
89#include <linux/wireless.h>
90#include <linux/ieee80211.h>
91#include <net/iw_handler.h>
92#include <net/cfg80211.h>
93
94#include "hermes_rid.h"
95#include "hermes_dld.h"
96#include "hw.h"
97#include "scan.h"
98#include "mic.h"
99#include "fw.h"
100#include "wext.h"
101#include "cfg.h"
102#include "main.h"
103
104#include "orinoco.h"
105
106
107
108
109
110MODULE_AUTHOR("Pavel Roskin <proski@gnu.org> & "
111 "David Gibson <hermes@gibson.dropbear.id.au>");
112MODULE_DESCRIPTION("Driver for Lucent Orinoco, Prism II based "
113 "and similar wireless cards");
114MODULE_LICENSE("Dual MPL/GPL");
115
116
117#ifdef ORINOCO_DEBUG
118int orinoco_debug = ORINOCO_DEBUG;
119EXPORT_SYMBOL(orinoco_debug);
120module_param(orinoco_debug, int, 0644);
121MODULE_PARM_DESC(orinoco_debug, "Debug level");
122#endif
123
124static int suppress_linkstatus;
125module_param(suppress_linkstatus, bool, 0644);
126MODULE_PARM_DESC(suppress_linkstatus, "Don't log link status changes");
127
128static int ignore_disconnect;
129module_param(ignore_disconnect, int, 0644);
130MODULE_PARM_DESC(ignore_disconnect,
131 "Don't report lost link to the network layer");
132
133int force_monitor;
134module_param(force_monitor, int, 0644);
135MODULE_PARM_DESC(force_monitor, "Allow monitor mode for all firmware versions");
136
137
138
139
140
141
142static const u8 encaps_hdr[] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00};
143#define ENCAPS_OVERHEAD (sizeof(encaps_hdr) + 2)
144
145#define ORINOCO_MIN_MTU 256
146#define ORINOCO_MAX_MTU (IEEE80211_MAX_DATA_LEN - ENCAPS_OVERHEAD)
147
148#define MAX_IRQLOOPS_PER_IRQ 10
149#define MAX_IRQLOOPS_PER_JIFFY (20000/HZ)
150
151
152
153
154#define DUMMY_FID 0xFFFF
155
156
157
158#define MAX_MULTICAST(priv) (HERMES_MAX_MULTICAST)
159
160#define ORINOCO_INTEN (HERMES_EV_RX | HERMES_EV_ALLOC \
161 | HERMES_EV_TX | HERMES_EV_TXEXC \
162 | HERMES_EV_WTERR | HERMES_EV_INFO \
163 | HERMES_EV_INFDROP)
164
165static const struct ethtool_ops orinoco_ethtool_ops;
166
167
168
169
170
171
172struct hermes_txexc_data {
173 struct hermes_tx_descriptor desc;
174 __le16 frame_ctl;
175 __le16 duration_id;
176 u8 addr1[ETH_ALEN];
177} __attribute__ ((packed));
178
179
180struct hermes_rx_descriptor {
181
182 __le16 status;
183 __le32 time;
184 u8 silence;
185 u8 signal;
186 u8 rate;
187 u8 rxflow;
188 __le32 reserved;
189
190
191 __le16 frame_ctl;
192 __le16 duration_id;
193 u8 addr1[ETH_ALEN];
194 u8 addr2[ETH_ALEN];
195 u8 addr3[ETH_ALEN];
196 __le16 seq_ctl;
197 u8 addr4[ETH_ALEN];
198
199
200 __le16 data_len;
201} __attribute__ ((packed));
202
203struct orinoco_rx_data {
204 struct hermes_rx_descriptor *desc;
205 struct sk_buff *skb;
206 struct list_head list;
207};
208
209struct orinoco_scan_data {
210 void *buf;
211 size_t len;
212 int type;
213 struct list_head list;
214};
215
216
217
218
219
220static int __orinoco_set_multicast_list(struct net_device *dev);
221static int __orinoco_up(struct orinoco_private *priv);
222static int __orinoco_down(struct orinoco_private *priv);
223static int __orinoco_commit(struct orinoco_private *priv);
224
225
226
227
228
229void set_port_type(struct orinoco_private *priv)
230{
231 switch (priv->iw_mode) {
232 case NL80211_IFTYPE_STATION:
233 priv->port_type = 1;
234 priv->createibss = 0;
235 break;
236 case NL80211_IFTYPE_ADHOC:
237 if (priv->prefer_port3) {
238 priv->port_type = 3;
239 priv->createibss = 0;
240 } else {
241 priv->port_type = priv->ibss_port;
242 priv->createibss = 1;
243 }
244 break;
245 case NL80211_IFTYPE_MONITOR:
246 priv->port_type = 3;
247 priv->createibss = 0;
248 break;
249 default:
250 printk(KERN_ERR "%s: Invalid priv->iw_mode in set_port_type()\n",
251 priv->ndev->name);
252 }
253}
254
255
256
257
258
259static int orinoco_open(struct net_device *dev)
260{
261 struct orinoco_private *priv = ndev_priv(dev);
262 unsigned long flags;
263 int err;
264
265 if (orinoco_lock(priv, &flags) != 0)
266 return -EBUSY;
267
268 err = __orinoco_up(priv);
269
270 if (!err)
271 priv->open = 1;
272
273 orinoco_unlock(priv, &flags);
274
275 return err;
276}
277
278static int orinoco_stop(struct net_device *dev)
279{
280 struct orinoco_private *priv = ndev_priv(dev);
281 int err = 0;
282
283
284
285
286 spin_lock_irq(&priv->lock);
287
288 priv->open = 0;
289
290 err = __orinoco_down(priv);
291
292 spin_unlock_irq(&priv->lock);
293
294 return err;
295}
296
297static struct net_device_stats *orinoco_get_stats(struct net_device *dev)
298{
299 struct orinoco_private *priv = ndev_priv(dev);
300
301 return &priv->stats;
302}
303
304static void orinoco_set_multicast_list(struct net_device *dev)
305{
306 struct orinoco_private *priv = ndev_priv(dev);
307 unsigned long flags;
308
309 if (orinoco_lock(priv, &flags) != 0) {
310 printk(KERN_DEBUG "%s: orinoco_set_multicast_list() "
311 "called when hw_unavailable\n", dev->name);
312 return;
313 }
314
315 __orinoco_set_multicast_list(dev);
316 orinoco_unlock(priv, &flags);
317}
318
319static int orinoco_change_mtu(struct net_device *dev, int new_mtu)
320{
321 struct orinoco_private *priv = ndev_priv(dev);
322
323 if ((new_mtu < ORINOCO_MIN_MTU) || (new_mtu > ORINOCO_MAX_MTU))
324 return -EINVAL;
325
326
327 if ((new_mtu + ENCAPS_OVERHEAD + sizeof(struct ieee80211_hdr)) >
328 (priv->nicbuf_size - ETH_HLEN))
329 return -EINVAL;
330
331 dev->mtu = new_mtu;
332
333 return 0;
334}
335
336
337
338
339
340static netdev_tx_t orinoco_xmit(struct sk_buff *skb, struct net_device *dev)
341{
342 struct orinoco_private *priv = ndev_priv(dev);
343 struct net_device_stats *stats = &priv->stats;
344 struct orinoco_tkip_key *key;
345 hermes_t *hw = &priv->hw;
346 int err = 0;
347 u16 txfid = priv->txfid;
348 struct ethhdr *eh;
349 int tx_control;
350 unsigned long flags;
351 int do_mic;
352
353 if (!netif_running(dev)) {
354 printk(KERN_ERR "%s: Tx on stopped device!\n",
355 dev->name);
356 return NETDEV_TX_BUSY;
357 }
358
359 if (netif_queue_stopped(dev)) {
360 printk(KERN_DEBUG "%s: Tx while transmitter busy!\n",
361 dev->name);
362 return NETDEV_TX_BUSY;
363 }
364
365 if (orinoco_lock(priv, &flags) != 0) {
366 printk(KERN_ERR "%s: orinoco_xmit() called while hw_unavailable\n",
367 dev->name);
368 return NETDEV_TX_BUSY;
369 }
370
371 if (!netif_carrier_ok(dev) ||
372 (priv->iw_mode == NL80211_IFTYPE_MONITOR)) {
373
374
375
376 goto drop;
377 }
378
379
380 if (skb->len < ETH_HLEN)
381 goto drop;
382
383 key = (struct orinoco_tkip_key *) priv->keys[priv->tx_key].key;
384
385 do_mic = ((priv->encode_alg == ORINOCO_ALG_TKIP) &&
386 (key != NULL));
387
388 tx_control = HERMES_TXCTRL_TX_OK | HERMES_TXCTRL_TX_EX;
389
390 if (do_mic)
391 tx_control |= (priv->tx_key << HERMES_MIC_KEY_ID_SHIFT) |
392 HERMES_TXCTRL_MIC;
393
394 if (priv->has_alt_txcntl) {
395
396
397
398
399 char desc[HERMES_802_3_OFFSET];
400 __le16 *txcntl = (__le16 *) &desc[HERMES_TXCNTL2_OFFSET];
401
402 memset(&desc, 0, sizeof(desc));
403
404 *txcntl = cpu_to_le16(tx_control);
405 err = hermes_bap_pwrite(hw, USER_BAP, &desc, sizeof(desc),
406 txfid, 0);
407 if (err) {
408 if (net_ratelimit())
409 printk(KERN_ERR "%s: Error %d writing Tx "
410 "descriptor to BAP\n", dev->name, err);
411 goto busy;
412 }
413 } else {
414 struct hermes_tx_descriptor desc;
415
416 memset(&desc, 0, sizeof(desc));
417
418 desc.tx_control = cpu_to_le16(tx_control);
419 err = hermes_bap_pwrite(hw, USER_BAP, &desc, sizeof(desc),
420 txfid, 0);
421 if (err) {
422 if (net_ratelimit())
423 printk(KERN_ERR "%s: Error %d writing Tx "
424 "descriptor to BAP\n", dev->name, err);
425 goto busy;
426 }
427
428
429
430
431 hermes_clear_words(hw, HERMES_DATA0,
432 HERMES_802_3_OFFSET - HERMES_802_11_OFFSET);
433 }
434
435 eh = (struct ethhdr *)skb->data;
436
437
438 if (ntohs(eh->h_proto) > ETH_DATA_LEN) {
439 struct header_struct {
440 struct ethhdr eth;
441 u8 encap[6];
442 } __attribute__ ((packed)) hdr;
443
444
445 skb_pull(skb, 2 * ETH_ALEN);
446
447
448 memcpy(&hdr.eth, eh, 2 * ETH_ALEN);
449 hdr.eth.h_proto = htons(sizeof(encaps_hdr) + skb->len);
450 memcpy(hdr.encap, encaps_hdr, sizeof(encaps_hdr));
451
452
453 if (skb_headroom(skb) < sizeof(hdr)) {
454 printk(KERN_ERR
455 "%s: Not enough headroom for 802.2 headers %d\n",
456 dev->name, skb_headroom(skb));
457 goto drop;
458 }
459 eh = (struct ethhdr *) skb_push(skb, sizeof(hdr));
460 memcpy(eh, &hdr, sizeof(hdr));
461 }
462
463 err = hermes_bap_pwrite(hw, USER_BAP, skb->data, skb->len,
464 txfid, HERMES_802_3_OFFSET);
465 if (err) {
466 printk(KERN_ERR "%s: Error %d writing packet to BAP\n",
467 dev->name, err);
468 goto busy;
469 }
470
471
472 if (do_mic) {
473 u8 mic_buf[MICHAEL_MIC_LEN + 1];
474 u8 *mic;
475 size_t offset;
476 size_t len;
477
478 if (skb->len % 2) {
479
480 mic_buf[0] = skb->data[skb->len - 1];
481 mic = &mic_buf[1];
482 offset = skb->len - 1;
483 len = MICHAEL_MIC_LEN + 1;
484 } else {
485 mic = &mic_buf[0];
486 offset = skb->len;
487 len = MICHAEL_MIC_LEN;
488 }
489
490 orinoco_mic(priv->tx_tfm_mic, key->tx_mic,
491 eh->h_dest, eh->h_source, 0 ,
492 skb->data + ETH_HLEN, skb->len - ETH_HLEN, mic);
493
494
495 err = hermes_bap_pwrite(hw, USER_BAP, &mic_buf[0], len,
496 txfid, HERMES_802_3_OFFSET + offset);
497 if (err) {
498 printk(KERN_ERR "%s: Error %d writing MIC to BAP\n",
499 dev->name, err);
500 goto busy;
501 }
502 }
503
504
505 netif_stop_queue(dev);
506
507 err = hermes_docmd_wait(hw, HERMES_CMD_TX | HERMES_CMD_RECL,
508 txfid, NULL);
509 if (err) {
510 netif_start_queue(dev);
511 if (net_ratelimit())
512 printk(KERN_ERR "%s: Error %d transmitting packet\n",
513 dev->name, err);
514 goto busy;
515 }
516
517 dev->trans_start = jiffies;
518 stats->tx_bytes += HERMES_802_3_OFFSET + skb->len;
519 goto ok;
520
521 drop:
522 stats->tx_errors++;
523 stats->tx_dropped++;
524
525 ok:
526 orinoco_unlock(priv, &flags);
527 dev_kfree_skb(skb);
528 return NETDEV_TX_OK;
529
530 busy:
531 if (err == -EIO)
532 schedule_work(&priv->reset_work);
533 orinoco_unlock(priv, &flags);
534 return NETDEV_TX_BUSY;
535}
536
537static void __orinoco_ev_alloc(struct net_device *dev, hermes_t *hw)
538{
539 struct orinoco_private *priv = ndev_priv(dev);
540 u16 fid = hermes_read_regn(hw, ALLOCFID);
541
542 if (fid != priv->txfid) {
543 if (fid != DUMMY_FID)
544 printk(KERN_WARNING "%s: Allocate event on unexpected fid (%04X)\n",
545 dev->name, fid);
546 return;
547 }
548
549 hermes_write_regn(hw, ALLOCFID, DUMMY_FID);
550}
551
552static void __orinoco_ev_tx(struct net_device *dev, hermes_t *hw)
553{
554 struct orinoco_private *priv = ndev_priv(dev);
555 struct net_device_stats *stats = &priv->stats;
556
557 stats->tx_packets++;
558
559 netif_wake_queue(dev);
560
561 hermes_write_regn(hw, TXCOMPLFID, DUMMY_FID);
562}
563
564static void __orinoco_ev_txexc(struct net_device *dev, hermes_t *hw)
565{
566 struct orinoco_private *priv = ndev_priv(dev);
567 struct net_device_stats *stats = &priv->stats;
568 u16 fid = hermes_read_regn(hw, TXCOMPLFID);
569 u16 status;
570 struct hermes_txexc_data hdr;
571 int err = 0;
572
573 if (fid == DUMMY_FID)
574 return;
575
576
577 err = hermes_bap_pread(hw, IRQ_BAP, &hdr,
578 sizeof(struct hermes_txexc_data),
579 fid, 0);
580
581 hermes_write_regn(hw, TXCOMPLFID, DUMMY_FID);
582 stats->tx_errors++;
583
584 if (err) {
585 printk(KERN_WARNING "%s: Unable to read descriptor on Tx error "
586 "(FID=%04X error %d)\n",
587 dev->name, fid, err);
588 return;
589 }
590
591 DEBUG(1, "%s: Tx error, err %d (FID=%04X)\n", dev->name,
592 err, fid);
593
594
595
596
597
598 status = le16_to_cpu(hdr.desc.status);
599 if (status & (HERMES_TXSTAT_RETRYERR | HERMES_TXSTAT_AGEDERR)) {
600 union iwreq_data wrqu;
601
602
603
604
605
606
607
608
609
610 memcpy(wrqu.addr.sa_data, hdr.addr1, ETH_ALEN);
611 wrqu.addr.sa_family = ARPHRD_ETHER;
612
613
614 wireless_send_event(dev, IWEVTXDROP, &wrqu, NULL);
615 }
616
617 netif_wake_queue(dev);
618}
619
620static void orinoco_tx_timeout(struct net_device *dev)
621{
622 struct orinoco_private *priv = ndev_priv(dev);
623 struct net_device_stats *stats = &priv->stats;
624 struct hermes *hw = &priv->hw;
625
626 printk(KERN_WARNING "%s: Tx timeout! "
627 "ALLOCFID=%04x, TXCOMPLFID=%04x, EVSTAT=%04x\n",
628 dev->name, hermes_read_regn(hw, ALLOCFID),
629 hermes_read_regn(hw, TXCOMPLFID), hermes_read_regn(hw, EVSTAT));
630
631 stats->tx_errors++;
632
633 schedule_work(&priv->reset_work);
634}
635
636
637
638
639
640
641
642static inline int is_ethersnap(void *_hdr)
643{
644 u8 *hdr = _hdr;
645
646
647
648
649
650
651 return (memcmp(hdr, &encaps_hdr, 5) == 0)
652 && ((hdr[5] == 0x00) || (hdr[5] == 0xf8));
653}
654
655static inline void orinoco_spy_gather(struct net_device *dev, u_char *mac,
656 int level, int noise)
657{
658 struct iw_quality wstats;
659 wstats.level = level - 0x95;
660 wstats.noise = noise - 0x95;
661 wstats.qual = (level > noise) ? (level - noise) : 0;
662 wstats.updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM;
663
664 wireless_spy_update(dev, mac, &wstats);
665}
666
667static void orinoco_stat_gather(struct net_device *dev,
668 struct sk_buff *skb,
669 struct hermes_rx_descriptor *desc)
670{
671 struct orinoco_private *priv = ndev_priv(dev);
672
673
674
675
676
677
678
679
680
681
682
683 if (SPY_NUMBER(priv)) {
684 orinoco_spy_gather(dev, skb_mac_header(skb) + ETH_ALEN,
685 desc->signal, desc->silence);
686 }
687}
688
689
690
691
692
693
694
695
696
697
698
699static void orinoco_rx_monitor(struct net_device *dev, u16 rxfid,
700 struct hermes_rx_descriptor *desc)
701{
702 u32 hdrlen = 30;
703 u32 datalen = 0;
704 u16 fc;
705 int err;
706 int len;
707 struct sk_buff *skb;
708 struct orinoco_private *priv = ndev_priv(dev);
709 struct net_device_stats *stats = &priv->stats;
710 hermes_t *hw = &priv->hw;
711
712 len = le16_to_cpu(desc->data_len);
713
714
715 fc = le16_to_cpu(desc->frame_ctl);
716 switch (fc & IEEE80211_FCTL_FTYPE) {
717 case IEEE80211_FTYPE_DATA:
718 if ((fc & IEEE80211_FCTL_TODS)
719 && (fc & IEEE80211_FCTL_FROMDS))
720 hdrlen = 30;
721 else
722 hdrlen = 24;
723 datalen = len;
724 break;
725 case IEEE80211_FTYPE_MGMT:
726 hdrlen = 24;
727 datalen = len;
728 break;
729 case IEEE80211_FTYPE_CTL:
730 switch (fc & IEEE80211_FCTL_STYPE) {
731 case IEEE80211_STYPE_PSPOLL:
732 case IEEE80211_STYPE_RTS:
733 case IEEE80211_STYPE_CFEND:
734 case IEEE80211_STYPE_CFENDACK:
735 hdrlen = 16;
736 break;
737 case IEEE80211_STYPE_CTS:
738 case IEEE80211_STYPE_ACK:
739 hdrlen = 10;
740 break;
741 }
742 break;
743 default:
744
745 break;
746 }
747
748
749 if (datalen > IEEE80211_MAX_DATA_LEN + 12) {
750 printk(KERN_DEBUG "%s: oversized monitor frame, "
751 "data length = %d\n", dev->name, datalen);
752 stats->rx_length_errors++;
753 goto update_stats;
754 }
755
756 skb = dev_alloc_skb(hdrlen + datalen);
757 if (!skb) {
758 printk(KERN_WARNING "%s: Cannot allocate skb for monitor frame\n",
759 dev->name);
760 goto update_stats;
761 }
762
763
764 memcpy(skb_put(skb, hdrlen), &(desc->frame_ctl), hdrlen);
765 skb_reset_mac_header(skb);
766
767
768 if (datalen > 0) {
769 err = hermes_bap_pread(hw, IRQ_BAP, skb_put(skb, datalen),
770 ALIGN(datalen, 2), rxfid,
771 HERMES_802_2_OFFSET);
772 if (err) {
773 printk(KERN_ERR "%s: error %d reading monitor frame\n",
774 dev->name, err);
775 goto drop;
776 }
777 }
778
779 skb->dev = dev;
780 skb->ip_summed = CHECKSUM_NONE;
781 skb->pkt_type = PACKET_OTHERHOST;
782 skb->protocol = cpu_to_be16(ETH_P_802_2);
783
784 stats->rx_packets++;
785 stats->rx_bytes += skb->len;
786
787 netif_rx(skb);
788 return;
789
790 drop:
791 dev_kfree_skb_irq(skb);
792 update_stats:
793 stats->rx_errors++;
794 stats->rx_dropped++;
795}
796
797static void __orinoco_ev_rx(struct net_device *dev, hermes_t *hw)
798{
799 struct orinoco_private *priv = ndev_priv(dev);
800 struct net_device_stats *stats = &priv->stats;
801 struct iw_statistics *wstats = &priv->wstats;
802 struct sk_buff *skb = NULL;
803 u16 rxfid, status;
804 int length;
805 struct hermes_rx_descriptor *desc;
806 struct orinoco_rx_data *rx_data;
807 int err;
808
809 desc = kmalloc(sizeof(*desc), GFP_ATOMIC);
810 if (!desc) {
811 printk(KERN_WARNING
812 "%s: Can't allocate space for RX descriptor\n",
813 dev->name);
814 goto update_stats;
815 }
816
817 rxfid = hermes_read_regn(hw, RXFID);
818
819 err = hermes_bap_pread(hw, IRQ_BAP, desc, sizeof(*desc),
820 rxfid, 0);
821 if (err) {
822 printk(KERN_ERR "%s: error %d reading Rx descriptor. "
823 "Frame dropped.\n", dev->name, err);
824 goto update_stats;
825 }
826
827 status = le16_to_cpu(desc->status);
828
829 if (status & HERMES_RXSTAT_BADCRC) {
830 DEBUG(1, "%s: Bad CRC on Rx. Frame dropped.\n",
831 dev->name);
832 stats->rx_crc_errors++;
833 goto update_stats;
834 }
835
836
837 if (priv->iw_mode == NL80211_IFTYPE_MONITOR) {
838 orinoco_rx_monitor(dev, rxfid, desc);
839 goto out;
840 }
841
842 if (status & HERMES_RXSTAT_UNDECRYPTABLE) {
843 DEBUG(1, "%s: Undecryptable frame on Rx. Frame dropped.\n",
844 dev->name);
845 wstats->discard.code++;
846 goto update_stats;
847 }
848
849 length = le16_to_cpu(desc->data_len);
850
851
852 if (length < 3) {
853
854
855
856 goto out;
857 }
858 if (length > IEEE80211_MAX_DATA_LEN) {
859 printk(KERN_WARNING "%s: Oversized frame received (%d bytes)\n",
860 dev->name, length);
861 stats->rx_length_errors++;
862 goto update_stats;
863 }
864
865
866
867 if (status & HERMES_RXSTAT_MIC)
868 length += MICHAEL_MIC_LEN;
869
870
871
872
873
874
875 skb = dev_alloc_skb(length+ETH_HLEN+2+1);
876 if (!skb) {
877 printk(KERN_WARNING "%s: Can't allocate skb for Rx\n",
878 dev->name);
879 goto update_stats;
880 }
881
882
883
884
885 skb_reserve(skb, ETH_HLEN + 2);
886
887 err = hermes_bap_pread(hw, IRQ_BAP, skb_put(skb, length),
888 ALIGN(length, 2), rxfid,
889 HERMES_802_2_OFFSET);
890 if (err) {
891 printk(KERN_ERR "%s: error %d reading frame. "
892 "Frame dropped.\n", dev->name, err);
893 goto drop;
894 }
895
896
897 rx_data = kzalloc(sizeof(*rx_data), GFP_ATOMIC);
898 if (!rx_data) {
899 printk(KERN_WARNING "%s: Can't allocate RX packet\n",
900 dev->name);
901 goto drop;
902 }
903 rx_data->desc = desc;
904 rx_data->skb = skb;
905 list_add_tail(&rx_data->list, &priv->rx_list);
906 tasklet_schedule(&priv->rx_tasklet);
907
908 return;
909
910drop:
911 dev_kfree_skb_irq(skb);
912update_stats:
913 stats->rx_errors++;
914 stats->rx_dropped++;
915out:
916 kfree(desc);
917}
918
919static void orinoco_rx(struct net_device *dev,
920 struct hermes_rx_descriptor *desc,
921 struct sk_buff *skb)
922{
923 struct orinoco_private *priv = ndev_priv(dev);
924 struct net_device_stats *stats = &priv->stats;
925 u16 status, fc;
926 int length;
927 struct ethhdr *hdr;
928
929 status = le16_to_cpu(desc->status);
930 length = le16_to_cpu(desc->data_len);
931 fc = le16_to_cpu(desc->frame_ctl);
932
933
934 if (status & HERMES_RXSTAT_MIC) {
935 struct orinoco_tkip_key *key;
936 int key_id = ((status & HERMES_RXSTAT_MIC_KEY_ID) >>
937 HERMES_MIC_KEY_ID_SHIFT);
938 u8 mic[MICHAEL_MIC_LEN];
939 u8 *rxmic;
940 u8 *src = (fc & IEEE80211_FCTL_FROMDS) ?
941 desc->addr3 : desc->addr2;
942
943
944 rxmic = skb->data + skb->len - MICHAEL_MIC_LEN;
945
946 skb_trim(skb, skb->len - MICHAEL_MIC_LEN);
947 length -= MICHAEL_MIC_LEN;
948
949 key = (struct orinoco_tkip_key *) priv->keys[key_id].key;
950
951 if (!key) {
952 printk(KERN_WARNING "%s: Received encrypted frame from "
953 "%pM using key %i, but key is not installed\n",
954 dev->name, src, key_id);
955 goto drop;
956 }
957
958 orinoco_mic(priv->rx_tfm_mic, key->rx_mic, desc->addr1, src,
959 0,
960 skb->data, skb->len, &mic[0]);
961
962 if (memcmp(mic, rxmic,
963 MICHAEL_MIC_LEN)) {
964 union iwreq_data wrqu;
965 struct iw_michaelmicfailure wxmic;
966
967 printk(KERN_WARNING "%s: "
968 "Invalid Michael MIC in data frame from %pM, "
969 "using key %i\n",
970 dev->name, src, key_id);
971
972
973
974
975 memset(&wxmic, 0, sizeof(wxmic));
976 wxmic.flags = key_id & IW_MICFAILURE_KEY_ID;
977 wxmic.flags |= (desc->addr1[0] & 1) ?
978 IW_MICFAILURE_GROUP : IW_MICFAILURE_PAIRWISE;
979 wxmic.src_addr.sa_family = ARPHRD_ETHER;
980 memcpy(wxmic.src_addr.sa_data, src, ETH_ALEN);
981
982 (void) orinoco_hw_get_tkip_iv(priv, key_id,
983 &wxmic.tsc[0]);
984
985 memset(&wrqu, 0, sizeof(wrqu));
986 wrqu.data.length = sizeof(wxmic);
987 wireless_send_event(dev, IWEVMICHAELMICFAILURE, &wrqu,
988 (char *) &wxmic);
989
990 goto drop;
991 }
992 }
993
994
995
996
997
998
999 if (length >= ENCAPS_OVERHEAD &&
1000 (((status & HERMES_RXSTAT_MSGTYPE) == HERMES_RXSTAT_1042) ||
1001 ((status & HERMES_RXSTAT_MSGTYPE) == HERMES_RXSTAT_TUNNEL) ||
1002 is_ethersnap(skb->data))) {
1003
1004
1005
1006 hdr = (struct ethhdr *)skb_push(skb,
1007 ETH_HLEN - ENCAPS_OVERHEAD);
1008 } else {
1009
1010 hdr = (struct ethhdr *)skb_push(skb, ETH_HLEN);
1011 hdr->h_proto = htons(length);
1012 }
1013 memcpy(hdr->h_dest, desc->addr1, ETH_ALEN);
1014 if (fc & IEEE80211_FCTL_FROMDS)
1015 memcpy(hdr->h_source, desc->addr3, ETH_ALEN);
1016 else
1017 memcpy(hdr->h_source, desc->addr2, ETH_ALEN);
1018
1019 skb->protocol = eth_type_trans(skb, dev);
1020 skb->ip_summed = CHECKSUM_NONE;
1021 if (fc & IEEE80211_FCTL_TODS)
1022 skb->pkt_type = PACKET_OTHERHOST;
1023
1024
1025 orinoco_stat_gather(dev, skb, desc);
1026
1027
1028 netif_rx(skb);
1029 stats->rx_packets++;
1030 stats->rx_bytes += length;
1031
1032 return;
1033
1034 drop:
1035 dev_kfree_skb(skb);
1036 stats->rx_errors++;
1037 stats->rx_dropped++;
1038}
1039
1040static void orinoco_rx_isr_tasklet(unsigned long data)
1041{
1042 struct orinoco_private *priv = (struct orinoco_private *) data;
1043 struct net_device *dev = priv->ndev;
1044 struct orinoco_rx_data *rx_data, *temp;
1045 struct hermes_rx_descriptor *desc;
1046 struct sk_buff *skb;
1047 unsigned long flags;
1048
1049
1050
1051
1052
1053
1054
1055 if (orinoco_lock(priv, &flags) != 0)
1056 return;
1057
1058
1059 list_for_each_entry_safe(rx_data, temp, &priv->rx_list, list) {
1060 desc = rx_data->desc;
1061 skb = rx_data->skb;
1062 list_del(&rx_data->list);
1063 kfree(rx_data);
1064
1065 orinoco_rx(dev, desc, skb);
1066
1067 kfree(desc);
1068 }
1069
1070 orinoco_unlock(priv, &flags);
1071}
1072
1073
1074
1075
1076
1077static void print_linkstatus(struct net_device *dev, u16 status)
1078{
1079 char *s;
1080
1081 if (suppress_linkstatus)
1082 return;
1083
1084 switch (status) {
1085 case HERMES_LINKSTATUS_NOT_CONNECTED:
1086 s = "Not Connected";
1087 break;
1088 case HERMES_LINKSTATUS_CONNECTED:
1089 s = "Connected";
1090 break;
1091 case HERMES_LINKSTATUS_DISCONNECTED:
1092 s = "Disconnected";
1093 break;
1094 case HERMES_LINKSTATUS_AP_CHANGE:
1095 s = "AP Changed";
1096 break;
1097 case HERMES_LINKSTATUS_AP_OUT_OF_RANGE:
1098 s = "AP Out of Range";
1099 break;
1100 case HERMES_LINKSTATUS_AP_IN_RANGE:
1101 s = "AP In Range";
1102 break;
1103 case HERMES_LINKSTATUS_ASSOC_FAILED:
1104 s = "Association Failed";
1105 break;
1106 default:
1107 s = "UNKNOWN";
1108 }
1109
1110 printk(KERN_DEBUG "%s: New link status: %s (%04x)\n",
1111 dev->name, s, status);
1112}
1113
1114
1115static void orinoco_join_ap(struct work_struct *work)
1116{
1117 struct orinoco_private *priv =
1118 container_of(work, struct orinoco_private, join_work);
1119 struct net_device *dev = priv->ndev;
1120 struct hermes *hw = &priv->hw;
1121 int err;
1122 unsigned long flags;
1123 struct join_req {
1124 u8 bssid[ETH_ALEN];
1125 __le16 channel;
1126 } __attribute__ ((packed)) req;
1127 const int atom_len = offsetof(struct prism2_scan_apinfo, atim);
1128 struct prism2_scan_apinfo *atom = NULL;
1129 int offset = 4;
1130 int found = 0;
1131 u8 *buf;
1132 u16 len;
1133
1134
1135 buf = kmalloc(MAX_SCAN_LEN, GFP_KERNEL);
1136 if (!buf)
1137 return;
1138
1139 if (orinoco_lock(priv, &flags) != 0)
1140 goto fail_lock;
1141
1142
1143 if (!priv->bssid_fixed)
1144 goto out;
1145
1146 if (strlen(priv->desired_essid) == 0)
1147 goto out;
1148
1149
1150 err = hermes_read_ltv(hw, USER_BAP,
1151 HERMES_RID_SCANRESULTSTABLE,
1152 MAX_SCAN_LEN, &len, buf);
1153 if (err) {
1154 printk(KERN_ERR "%s: Cannot read scan results\n",
1155 dev->name);
1156 goto out;
1157 }
1158
1159 len = HERMES_RECLEN_TO_BYTES(len);
1160
1161
1162
1163 for (; offset + atom_len <= len; offset += atom_len) {
1164 atom = (struct prism2_scan_apinfo *) (buf + offset);
1165 if (memcmp(&atom->bssid, priv->desired_bssid, ETH_ALEN) == 0) {
1166 found = 1;
1167 break;
1168 }
1169 }
1170
1171 if (!found) {
1172 DEBUG(1, "%s: Requested AP not found in scan results\n",
1173 dev->name);
1174 goto out;
1175 }
1176
1177 memcpy(req.bssid, priv->desired_bssid, ETH_ALEN);
1178 req.channel = atom->channel;
1179 err = HERMES_WRITE_RECORD(hw, USER_BAP, HERMES_RID_CNFJOINREQUEST,
1180 &req);
1181 if (err)
1182 printk(KERN_ERR "%s: Error issuing join request\n", dev->name);
1183
1184 out:
1185 orinoco_unlock(priv, &flags);
1186
1187 fail_lock:
1188 kfree(buf);
1189}
1190
1191
1192static void orinoco_send_bssid_wevent(struct orinoco_private *priv)
1193{
1194 struct net_device *dev = priv->ndev;
1195 struct hermes *hw = &priv->hw;
1196 union iwreq_data wrqu;
1197 int err;
1198
1199 err = hermes_read_ltv(hw, USER_BAP, HERMES_RID_CURRENTBSSID,
1200 ETH_ALEN, NULL, wrqu.ap_addr.sa_data);
1201 if (err != 0)
1202 return;
1203
1204 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1205
1206
1207 wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
1208}
1209
1210static void orinoco_send_assocreqie_wevent(struct orinoco_private *priv)
1211{
1212 struct net_device *dev = priv->ndev;
1213 struct hermes *hw = &priv->hw;
1214 union iwreq_data wrqu;
1215 int err;
1216 u8 buf[88];
1217 u8 *ie;
1218
1219 if (!priv->has_wpa)
1220 return;
1221
1222 err = hermes_read_ltv(hw, USER_BAP, HERMES_RID_CURRENT_ASSOC_REQ_INFO,
1223 sizeof(buf), NULL, &buf);
1224 if (err != 0)
1225 return;
1226
1227 ie = orinoco_get_wpa_ie(buf, sizeof(buf));
1228 if (ie) {
1229 int rem = sizeof(buf) - (ie - &buf[0]);
1230 wrqu.data.length = ie[1] + 2;
1231 if (wrqu.data.length > rem)
1232 wrqu.data.length = rem;
1233
1234 if (wrqu.data.length)
1235
1236 wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, ie);
1237 }
1238}
1239
1240static void orinoco_send_assocrespie_wevent(struct orinoco_private *priv)
1241{
1242 struct net_device *dev = priv->ndev;
1243 struct hermes *hw = &priv->hw;
1244 union iwreq_data wrqu;
1245 int err;
1246 u8 buf[88];
1247 u8 *ie;
1248
1249 if (!priv->has_wpa)
1250 return;
1251
1252 err = hermes_read_ltv(hw, USER_BAP, HERMES_RID_CURRENT_ASSOC_RESP_INFO,
1253 sizeof(buf), NULL, &buf);
1254 if (err != 0)
1255 return;
1256
1257 ie = orinoco_get_wpa_ie(buf, sizeof(buf));
1258 if (ie) {
1259 int rem = sizeof(buf) - (ie - &buf[0]);
1260 wrqu.data.length = ie[1] + 2;
1261 if (wrqu.data.length > rem)
1262 wrqu.data.length = rem;
1263
1264 if (wrqu.data.length)
1265
1266 wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, ie);
1267 }
1268}
1269
1270static void orinoco_send_wevents(struct work_struct *work)
1271{
1272 struct orinoco_private *priv =
1273 container_of(work, struct orinoco_private, wevent_work);
1274 unsigned long flags;
1275
1276 if (orinoco_lock(priv, &flags) != 0)
1277 return;
1278
1279 orinoco_send_assocreqie_wevent(priv);
1280 orinoco_send_assocrespie_wevent(priv);
1281 orinoco_send_bssid_wevent(priv);
1282
1283 orinoco_unlock(priv, &flags);
1284}
1285
1286static void qbuf_scan(struct orinoco_private *priv, void *buf,
1287 int len, int type)
1288{
1289 struct orinoco_scan_data *sd;
1290 unsigned long flags;
1291
1292 sd = kmalloc(sizeof(*sd), GFP_ATOMIC);
1293 sd->buf = buf;
1294 sd->len = len;
1295 sd->type = type;
1296
1297 spin_lock_irqsave(&priv->scan_lock, flags);
1298 list_add_tail(&sd->list, &priv->scan_list);
1299 spin_unlock_irqrestore(&priv->scan_lock, flags);
1300
1301 schedule_work(&priv->process_scan);
1302}
1303
1304static void qabort_scan(struct orinoco_private *priv)
1305{
1306 struct orinoco_scan_data *sd;
1307 unsigned long flags;
1308
1309 sd = kmalloc(sizeof(*sd), GFP_ATOMIC);
1310 sd->len = -1;
1311
1312 spin_lock_irqsave(&priv->scan_lock, flags);
1313 list_add_tail(&sd->list, &priv->scan_list);
1314 spin_unlock_irqrestore(&priv->scan_lock, flags);
1315
1316 schedule_work(&priv->process_scan);
1317}
1318
1319static void orinoco_process_scan_results(struct work_struct *work)
1320{
1321 struct orinoco_private *priv =
1322 container_of(work, struct orinoco_private, process_scan);
1323 struct orinoco_scan_data *sd, *temp;
1324 unsigned long flags;
1325 void *buf;
1326 int len;
1327 int type;
1328
1329 spin_lock_irqsave(&priv->scan_lock, flags);
1330 list_for_each_entry_safe(sd, temp, &priv->scan_list, list) {
1331 spin_unlock_irqrestore(&priv->scan_lock, flags);
1332
1333 buf = sd->buf;
1334 len = sd->len;
1335 type = sd->type;
1336
1337 list_del(&sd->list);
1338 kfree(sd);
1339
1340 if (len > 0) {
1341 if (type == HERMES_INQ_CHANNELINFO)
1342 orinoco_add_extscan_result(priv, buf, len);
1343 else
1344 orinoco_add_hostscan_results(priv, buf, len);
1345
1346 kfree(buf);
1347 } else if (priv->scan_request) {
1348
1349 cfg80211_scan_done(priv->scan_request, (len < 0));
1350 priv->scan_request = NULL;
1351 }
1352
1353 spin_lock_irqsave(&priv->scan_lock, flags);
1354 }
1355 spin_unlock_irqrestore(&priv->scan_lock, flags);
1356}
1357
1358static void __orinoco_ev_info(struct net_device *dev, hermes_t *hw)
1359{
1360 struct orinoco_private *priv = ndev_priv(dev);
1361 u16 infofid;
1362 struct {
1363 __le16 len;
1364 __le16 type;
1365 } __attribute__ ((packed)) info;
1366 int len, type;
1367 int err;
1368
1369
1370
1371
1372
1373 infofid = hermes_read_regn(hw, INFOFID);
1374
1375
1376 err = hermes_bap_pread(hw, IRQ_BAP, &info, sizeof(info),
1377 infofid, 0);
1378 if (err) {
1379 printk(KERN_ERR "%s: error %d reading info frame. "
1380 "Frame dropped.\n", dev->name, err);
1381 return;
1382 }
1383
1384 len = HERMES_RECLEN_TO_BYTES(le16_to_cpu(info.len));
1385 type = le16_to_cpu(info.type);
1386
1387 switch (type) {
1388 case HERMES_INQ_TALLIES: {
1389 struct hermes_tallies_frame tallies;
1390 struct iw_statistics *wstats = &priv->wstats;
1391
1392 if (len > sizeof(tallies)) {
1393 printk(KERN_WARNING "%s: Tallies frame too long (%d bytes)\n",
1394 dev->name, len);
1395 len = sizeof(tallies);
1396 }
1397
1398 err = hermes_bap_pread(hw, IRQ_BAP, &tallies, len,
1399 infofid, sizeof(info));
1400 if (err)
1401 break;
1402
1403
1404
1405 wstats->discard.code +=
1406 le16_to_cpu(tallies.RxWEPUndecryptable);
1407 if (len == sizeof(tallies))
1408 wstats->discard.code +=
1409 le16_to_cpu(tallies.RxDiscards_WEPICVError) +
1410 le16_to_cpu(tallies.RxDiscards_WEPExcluded);
1411 wstats->discard.misc +=
1412 le16_to_cpu(tallies.TxDiscardsWrongSA);
1413 wstats->discard.fragment +=
1414 le16_to_cpu(tallies.RxMsgInBadMsgFragments);
1415 wstats->discard.retries +=
1416 le16_to_cpu(tallies.TxRetryLimitExceeded);
1417
1418 }
1419 break;
1420 case HERMES_INQ_LINKSTATUS: {
1421 struct hermes_linkstatus linkstatus;
1422 u16 newstatus;
1423 int connected;
1424
1425 if (priv->iw_mode == NL80211_IFTYPE_MONITOR)
1426 break;
1427
1428 if (len != sizeof(linkstatus)) {
1429 printk(KERN_WARNING "%s: Unexpected size for linkstatus frame (%d bytes)\n",
1430 dev->name, len);
1431 break;
1432 }
1433
1434 err = hermes_bap_pread(hw, IRQ_BAP, &linkstatus, len,
1435 infofid, sizeof(info));
1436 if (err)
1437 break;
1438 newstatus = le16_to_cpu(linkstatus.linkstatus);
1439
1440
1441
1442 if (newstatus == HERMES_LINKSTATUS_AP_OUT_OF_RANGE &&
1443 priv->firmware_type == FIRMWARE_TYPE_SYMBOL &&
1444 priv->has_hostscan && priv->scan_request) {
1445 hermes_inquire(hw, HERMES_INQ_HOSTSCAN_SYMBOL);
1446 break;
1447 }
1448
1449 connected = (newstatus == HERMES_LINKSTATUS_CONNECTED)
1450 || (newstatus == HERMES_LINKSTATUS_AP_CHANGE)
1451 || (newstatus == HERMES_LINKSTATUS_AP_IN_RANGE);
1452
1453 if (connected)
1454 netif_carrier_on(dev);
1455 else if (!ignore_disconnect)
1456 netif_carrier_off(dev);
1457
1458 if (newstatus != priv->last_linkstatus) {
1459 priv->last_linkstatus = newstatus;
1460 print_linkstatus(dev, newstatus);
1461
1462
1463
1464
1465 schedule_work(&priv->wevent_work);
1466 }
1467 }
1468 break;
1469 case HERMES_INQ_SCAN:
1470 if (!priv->scan_request && priv->bssid_fixed &&
1471 priv->firmware_type == FIRMWARE_TYPE_INTERSIL) {
1472 schedule_work(&priv->join_work);
1473 break;
1474 }
1475
1476 case HERMES_INQ_HOSTSCAN:
1477 case HERMES_INQ_HOSTSCAN_SYMBOL: {
1478
1479
1480 unsigned char *buf;
1481
1482
1483 if (len > 4096) {
1484 printk(KERN_WARNING "%s: Scan results too large (%d bytes)\n",
1485 dev->name, len);
1486 qabort_scan(priv);
1487 break;
1488 }
1489
1490
1491 buf = kmalloc(len, GFP_ATOMIC);
1492 if (buf == NULL) {
1493
1494 qabort_scan(priv);
1495 break;
1496 }
1497
1498
1499 err = hermes_bap_pread(hw, IRQ_BAP, (void *) buf, len,
1500 infofid, sizeof(info));
1501 if (err) {
1502 kfree(buf);
1503 qabort_scan(priv);
1504 break;
1505 }
1506
1507#ifdef ORINOCO_DEBUG
1508 {
1509 int i;
1510 printk(KERN_DEBUG "Scan result [%02X", buf[0]);
1511 for (i = 1; i < (len * 2); i++)
1512 printk(":%02X", buf[i]);
1513 printk("]\n");
1514 }
1515#endif
1516
1517 qbuf_scan(priv, buf, len, type);
1518 }
1519 break;
1520 case HERMES_INQ_CHANNELINFO:
1521 {
1522 struct agere_ext_scan_info *bss;
1523
1524 if (!priv->scan_request) {
1525 printk(KERN_DEBUG "%s: Got chaninfo without scan, "
1526 "len=%d\n", dev->name, len);
1527 break;
1528 }
1529
1530
1531 if (len == 0) {
1532 qbuf_scan(priv, NULL, len, type);
1533 break;
1534 }
1535
1536
1537 else if (len < (offsetof(struct agere_ext_scan_info,
1538 data) + 2)) {
1539
1540
1541 printk(KERN_WARNING
1542 "%s: Ext scan results too short (%d bytes)\n",
1543 dev->name, len);
1544 break;
1545 }
1546
1547 bss = kmalloc(len, GFP_ATOMIC);
1548 if (bss == NULL)
1549 break;
1550
1551
1552 err = hermes_bap_pread(hw, IRQ_BAP, (void *) bss, len,
1553 infofid, sizeof(info));
1554 if (err)
1555 kfree(bss);
1556 else
1557 qbuf_scan(priv, bss, len, type);
1558
1559 break;
1560 }
1561 case HERMES_INQ_SEC_STAT_AGERE:
1562
1563
1564 if (priv->firmware_type == FIRMWARE_TYPE_AGERE)
1565 break;
1566
1567 default:
1568 printk(KERN_DEBUG "%s: Unknown information frame received: "
1569 "type 0x%04x, length %d\n", dev->name, type, len);
1570
1571 break;
1572 }
1573
1574 return;
1575}
1576
1577static void __orinoco_ev_infdrop(struct net_device *dev, hermes_t *hw)
1578{
1579 if (net_ratelimit())
1580 printk(KERN_DEBUG "%s: Information frame lost.\n", dev->name);
1581}
1582
1583
1584
1585
1586
1587static int __orinoco_up(struct orinoco_private *priv)
1588{
1589 struct net_device *dev = priv->ndev;
1590 struct hermes *hw = &priv->hw;
1591 int err;
1592
1593 netif_carrier_off(dev);
1594
1595 err = __orinoco_commit(priv);
1596 if (err) {
1597 printk(KERN_ERR "%s: Error %d configuring card\n",
1598 dev->name, err);
1599 return err;
1600 }
1601
1602
1603 hermes_set_irqmask(hw, ORINOCO_INTEN);
1604 err = hermes_enable_port(hw, 0);
1605 if (err) {
1606 printk(KERN_ERR "%s: Error %d enabling MAC port\n",
1607 dev->name, err);
1608 return err;
1609 }
1610
1611 netif_start_queue(dev);
1612
1613 return 0;
1614}
1615
1616static int __orinoco_down(struct orinoco_private *priv)
1617{
1618 struct net_device *dev = priv->ndev;
1619 struct hermes *hw = &priv->hw;
1620 int err;
1621
1622 netif_stop_queue(dev);
1623
1624 if (!priv->hw_unavailable) {
1625 if (!priv->broken_disableport) {
1626 err = hermes_disable_port(hw, 0);
1627 if (err) {
1628
1629
1630
1631 printk(KERN_WARNING "%s: Error %d disabling MAC port\n",
1632 dev->name, err);
1633 priv->broken_disableport = 1;
1634 }
1635 }
1636 hermes_set_irqmask(hw, 0);
1637 hermes_write_regn(hw, EVACK, 0xffff);
1638 }
1639
1640
1641 netif_carrier_off(dev);
1642 priv->last_linkstatus = 0xffff;
1643
1644 return 0;
1645}
1646
1647static int orinoco_reinit_firmware(struct orinoco_private *priv)
1648{
1649 struct hermes *hw = &priv->hw;
1650 int err;
1651
1652 err = hermes_init(hw);
1653 if (priv->do_fw_download && !err) {
1654 err = orinoco_download(priv);
1655 if (err)
1656 priv->do_fw_download = 0;
1657 }
1658 if (!err)
1659 err = orinoco_hw_allocate_fid(priv);
1660
1661 return err;
1662}
1663
1664static int
1665__orinoco_set_multicast_list(struct net_device *dev)
1666{
1667 struct orinoco_private *priv = ndev_priv(dev);
1668 int err = 0;
1669 int promisc, mc_count;
1670
1671
1672
1673 if ((dev->flags & IFF_PROMISC) || (dev->flags & IFF_ALLMULTI) ||
1674 (dev->mc_count > MAX_MULTICAST(priv))) {
1675 promisc = 1;
1676 mc_count = 0;
1677 } else {
1678 promisc = 0;
1679 mc_count = dev->mc_count;
1680 }
1681
1682 err = __orinoco_hw_set_multicast_list(priv, dev->mc_list, mc_count,
1683 promisc);
1684
1685 return err;
1686}
1687
1688
1689
1690void orinoco_reset(struct work_struct *work)
1691{
1692 struct orinoco_private *priv =
1693 container_of(work, struct orinoco_private, reset_work);
1694 struct net_device *dev = priv->ndev;
1695 struct hermes *hw = &priv->hw;
1696 int err;
1697 unsigned long flags;
1698
1699 if (orinoco_lock(priv, &flags) != 0)
1700
1701
1702
1703 return;
1704
1705 netif_stop_queue(dev);
1706
1707
1708
1709 hermes_set_irqmask(hw, 0);
1710 hermes_write_regn(hw, EVACK, 0xffff);
1711
1712 priv->hw_unavailable++;
1713 priv->last_linkstatus = 0xffff;
1714 netif_carrier_off(dev);
1715
1716 orinoco_unlock(priv, &flags);
1717
1718
1719 if (priv->scan_request) {
1720 cfg80211_scan_done(priv->scan_request, 1);
1721 priv->scan_request = NULL;
1722 }
1723
1724 if (priv->hard_reset) {
1725 err = (*priv->hard_reset)(priv);
1726 if (err) {
1727 printk(KERN_ERR "%s: orinoco_reset: Error %d "
1728 "performing hard reset\n", dev->name, err);
1729 goto disable;
1730 }
1731 }
1732
1733 err = orinoco_reinit_firmware(priv);
1734 if (err) {
1735 printk(KERN_ERR "%s: orinoco_reset: Error %d re-initializing firmware\n",
1736 dev->name, err);
1737 goto disable;
1738 }
1739
1740
1741 spin_lock_irq(&priv->lock);
1742
1743 priv->hw_unavailable--;
1744
1745
1746
1747 if (priv->open && (!priv->hw_unavailable)) {
1748 err = __orinoco_up(priv);
1749 if (err) {
1750 printk(KERN_ERR "%s: orinoco_reset: Error %d reenabling card\n",
1751 dev->name, err);
1752 } else
1753 dev->trans_start = jiffies;
1754 }
1755
1756 spin_unlock_irq(&priv->lock);
1757
1758 return;
1759 disable:
1760 hermes_set_irqmask(hw, 0);
1761 netif_device_detach(dev);
1762 printk(KERN_ERR "%s: Device has been disabled!\n", dev->name);
1763}
1764
1765static int __orinoco_commit(struct orinoco_private *priv)
1766{
1767 struct net_device *dev = priv->ndev;
1768 int err = 0;
1769
1770 err = orinoco_hw_program_rids(priv);
1771
1772
1773 (void) __orinoco_set_multicast_list(dev);
1774
1775 return err;
1776}
1777
1778
1779
1780
1781int orinoco_commit(struct orinoco_private *priv)
1782{
1783 struct net_device *dev = priv->ndev;
1784 hermes_t *hw = &priv->hw;
1785 int err;
1786
1787 if (priv->broken_disableport) {
1788 schedule_work(&priv->reset_work);
1789 return 0;
1790 }
1791
1792 err = hermes_disable_port(hw, 0);
1793 if (err) {
1794 printk(KERN_WARNING "%s: Unable to disable port "
1795 "while reconfiguring card\n", dev->name);
1796 priv->broken_disableport = 1;
1797 goto out;
1798 }
1799
1800 err = __orinoco_commit(priv);
1801 if (err) {
1802 printk(KERN_WARNING "%s: Unable to reconfigure card\n",
1803 dev->name);
1804 goto out;
1805 }
1806
1807 err = hermes_enable_port(hw, 0);
1808 if (err) {
1809 printk(KERN_WARNING "%s: Unable to enable port while reconfiguring card\n",
1810 dev->name);
1811 goto out;
1812 }
1813
1814 out:
1815 if (err) {
1816 printk(KERN_WARNING "%s: Resetting instead...\n", dev->name);
1817 schedule_work(&priv->reset_work);
1818 err = 0;
1819 }
1820 return err;
1821}
1822
1823
1824
1825
1826
1827static void __orinoco_ev_tick(struct net_device *dev, hermes_t *hw)
1828{
1829 printk(KERN_DEBUG "%s: TICK\n", dev->name);
1830}
1831
1832static void __orinoco_ev_wterr(struct net_device *dev, hermes_t *hw)
1833{
1834
1835
1836 printk(KERN_DEBUG "%s: MAC controller error (WTERR). Ignoring.\n",
1837 dev->name);
1838}
1839
1840irqreturn_t orinoco_interrupt(int irq, void *dev_id)
1841{
1842 struct orinoco_private *priv = dev_id;
1843 struct net_device *dev = priv->ndev;
1844 hermes_t *hw = &priv->hw;
1845 int count = MAX_IRQLOOPS_PER_IRQ;
1846 u16 evstat, events;
1847
1848
1849
1850
1851
1852
1853 static int last_irq_jiffy;
1854 static int loops_this_jiffy;
1855 unsigned long flags;
1856
1857 if (orinoco_lock(priv, &flags) != 0) {
1858
1859
1860 return IRQ_HANDLED;
1861 }
1862
1863 evstat = hermes_read_regn(hw, EVSTAT);
1864 events = evstat & hw->inten;
1865 if (!events) {
1866 orinoco_unlock(priv, &flags);
1867 return IRQ_NONE;
1868 }
1869
1870 if (jiffies != last_irq_jiffy)
1871 loops_this_jiffy = 0;
1872 last_irq_jiffy = jiffies;
1873
1874 while (events && count--) {
1875 if (++loops_this_jiffy > MAX_IRQLOOPS_PER_JIFFY) {
1876 printk(KERN_WARNING "%s: IRQ handler is looping too "
1877 "much! Resetting.\n", dev->name);
1878
1879 hermes_set_irqmask(hw, 0);
1880 schedule_work(&priv->reset_work);
1881 break;
1882 }
1883
1884
1885 if (!hermes_present(hw)) {
1886 DEBUG(0, "orinoco_interrupt(): card removed\n");
1887 break;
1888 }
1889
1890 if (events & HERMES_EV_TICK)
1891 __orinoco_ev_tick(dev, hw);
1892 if (events & HERMES_EV_WTERR)
1893 __orinoco_ev_wterr(dev, hw);
1894 if (events & HERMES_EV_INFDROP)
1895 __orinoco_ev_infdrop(dev, hw);
1896 if (events & HERMES_EV_INFO)
1897 __orinoco_ev_info(dev, hw);
1898 if (events & HERMES_EV_RX)
1899 __orinoco_ev_rx(dev, hw);
1900 if (events & HERMES_EV_TXEXC)
1901 __orinoco_ev_txexc(dev, hw);
1902 if (events & HERMES_EV_TX)
1903 __orinoco_ev_tx(dev, hw);
1904 if (events & HERMES_EV_ALLOC)
1905 __orinoco_ev_alloc(dev, hw);
1906
1907 hermes_write_regn(hw, EVACK, evstat);
1908
1909 evstat = hermes_read_regn(hw, EVSTAT);
1910 events = evstat & hw->inten;
1911 };
1912
1913 orinoco_unlock(priv, &flags);
1914 return IRQ_HANDLED;
1915}
1916EXPORT_SYMBOL(orinoco_interrupt);
1917
1918
1919
1920
1921#if defined(CONFIG_PM_SLEEP) && !defined(CONFIG_HERMES_CACHE_FW_ON_INIT)
1922static int orinoco_pm_notifier(struct notifier_block *notifier,
1923 unsigned long pm_event,
1924 void *unused)
1925{
1926 struct orinoco_private *priv = container_of(notifier,
1927 struct orinoco_private,
1928 pm_notifier);
1929
1930
1931
1932
1933
1934 if (!priv->do_fw_download)
1935 return NOTIFY_DONE;
1936
1937 switch (pm_event) {
1938 case PM_HIBERNATION_PREPARE:
1939 case PM_SUSPEND_PREPARE:
1940 orinoco_cache_fw(priv, 0);
1941 break;
1942
1943 case PM_POST_RESTORE:
1944
1945
1946 case PM_POST_HIBERNATION:
1947 case PM_POST_SUSPEND:
1948 orinoco_uncache_fw(priv);
1949 break;
1950
1951 case PM_RESTORE_PREPARE:
1952 default:
1953 break;
1954 }
1955
1956 return NOTIFY_DONE;
1957}
1958
1959static void orinoco_register_pm_notifier(struct orinoco_private *priv)
1960{
1961 priv->pm_notifier.notifier_call = orinoco_pm_notifier;
1962 register_pm_notifier(&priv->pm_notifier);
1963}
1964
1965static void orinoco_unregister_pm_notifier(struct orinoco_private *priv)
1966{
1967 unregister_pm_notifier(&priv->pm_notifier);
1968}
1969#else
1970#define orinoco_register_pm_notifier(priv) do { } while(0)
1971#define orinoco_unregister_pm_notifier(priv) do { } while(0)
1972#endif
1973
1974
1975
1976
1977
1978int orinoco_init(struct orinoco_private *priv)
1979{
1980 struct device *dev = priv->dev;
1981 struct wiphy *wiphy = priv_to_wiphy(priv);
1982 hermes_t *hw = &priv->hw;
1983 int err = 0;
1984
1985
1986
1987 priv->nicbuf_size = IEEE80211_MAX_FRAME_LEN + ETH_HLEN;
1988
1989
1990 err = hermes_init(hw);
1991 if (err != 0) {
1992 dev_err(dev, "Failed to initialize firmware (err = %d)\n",
1993 err);
1994 goto out;
1995 }
1996
1997 err = determine_fw_capabilities(priv);
1998 if (err != 0) {
1999 dev_err(dev, "Incompatible firmware, aborting\n");
2000 goto out;
2001 }
2002
2003 if (priv->do_fw_download) {
2004#ifdef CONFIG_HERMES_CACHE_FW_ON_INIT
2005 orinoco_cache_fw(priv, 0);
2006#endif
2007
2008 err = orinoco_download(priv);
2009 if (err)
2010 priv->do_fw_download = 0;
2011
2012
2013 err = determine_fw_capabilities(priv);
2014 if (err != 0) {
2015 dev_err(dev, "Incompatible firmware, aborting\n");
2016 goto out;
2017 }
2018 }
2019
2020 if (priv->has_port3)
2021 dev_info(dev, "Ad-hoc demo mode supported\n");
2022 if (priv->has_ibss)
2023 dev_info(dev, "IEEE standard IBSS ad-hoc mode supported\n");
2024 if (priv->has_wep)
2025 dev_info(dev, "WEP supported, %s-bit key\n",
2026 priv->has_big_wep ? "104" : "40");
2027 if (priv->has_wpa) {
2028 dev_info(dev, "WPA-PSK supported\n");
2029 if (orinoco_mic_init(priv)) {
2030 dev_err(dev, "Failed to setup MIC crypto algorithm. "
2031 "Disabling WPA support\n");
2032 priv->has_wpa = 0;
2033 }
2034 }
2035
2036 err = orinoco_hw_read_card_settings(priv, wiphy->perm_addr);
2037 if (err)
2038 goto out;
2039
2040 err = orinoco_hw_allocate_fid(priv);
2041 if (err) {
2042 dev_err(dev, "Failed to allocate NIC buffer!\n");
2043 goto out;
2044 }
2045
2046
2047 priv->iw_mode = NL80211_IFTYPE_STATION;
2048
2049 priv->prefer_port3 = priv->has_port3 && (!priv->has_ibss);
2050 set_port_type(priv);
2051 priv->channel = 0;
2052
2053 priv->promiscuous = 0;
2054 priv->encode_alg = ORINOCO_ALG_NONE;
2055 priv->tx_key = 0;
2056 priv->wpa_enabled = 0;
2057 priv->tkip_cm_active = 0;
2058 priv->key_mgmt = 0;
2059 priv->wpa_ie_len = 0;
2060 priv->wpa_ie = NULL;
2061
2062 if (orinoco_wiphy_register(wiphy)) {
2063 err = -ENODEV;
2064 goto out;
2065 }
2066
2067
2068
2069 spin_lock_irq(&priv->lock);
2070 priv->hw_unavailable--;
2071 spin_unlock_irq(&priv->lock);
2072
2073 dev_dbg(dev, "Ready\n");
2074
2075 out:
2076 return err;
2077}
2078EXPORT_SYMBOL(orinoco_init);
2079
2080static const struct net_device_ops orinoco_netdev_ops = {
2081 .ndo_open = orinoco_open,
2082 .ndo_stop = orinoco_stop,
2083 .ndo_start_xmit = orinoco_xmit,
2084 .ndo_set_multicast_list = orinoco_set_multicast_list,
2085 .ndo_change_mtu = orinoco_change_mtu,
2086 .ndo_set_mac_address = eth_mac_addr,
2087 .ndo_validate_addr = eth_validate_addr,
2088 .ndo_tx_timeout = orinoco_tx_timeout,
2089 .ndo_get_stats = orinoco_get_stats,
2090};
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117struct orinoco_private
2118*alloc_orinocodev(int sizeof_card,
2119 struct device *device,
2120 int (*hard_reset)(struct orinoco_private *),
2121 int (*stop_fw)(struct orinoco_private *, int))
2122{
2123 struct orinoco_private *priv;
2124 struct wiphy *wiphy;
2125
2126
2127
2128
2129
2130 wiphy = wiphy_new(&orinoco_cfg_ops,
2131 sizeof(struct orinoco_private) + sizeof_card);
2132 if (!wiphy)
2133 return NULL;
2134
2135 priv = wiphy_priv(wiphy);
2136 priv->dev = device;
2137
2138 if (sizeof_card)
2139 priv->card = (void *)((unsigned long)priv
2140 + sizeof(struct orinoco_private));
2141 else
2142 priv->card = NULL;
2143
2144 orinoco_wiphy_init(wiphy);
2145
2146#ifdef WIRELESS_SPY
2147 priv->wireless_data.spy_data = &priv->spy_data;
2148#endif
2149
2150
2151 priv->hard_reset = hard_reset;
2152 priv->stop_fw = stop_fw;
2153
2154 spin_lock_init(&priv->lock);
2155 priv->open = 0;
2156 priv->hw_unavailable = 1;
2157
2158
2159 INIT_WORK(&priv->reset_work, orinoco_reset);
2160 INIT_WORK(&priv->join_work, orinoco_join_ap);
2161 INIT_WORK(&priv->wevent_work, orinoco_send_wevents);
2162
2163 INIT_LIST_HEAD(&priv->rx_list);
2164 tasklet_init(&priv->rx_tasklet, orinoco_rx_isr_tasklet,
2165 (unsigned long) priv);
2166
2167 spin_lock_init(&priv->scan_lock);
2168 INIT_LIST_HEAD(&priv->scan_list);
2169 INIT_WORK(&priv->process_scan, orinoco_process_scan_results);
2170
2171 priv->last_linkstatus = 0xffff;
2172
2173#if defined(CONFIG_HERMES_CACHE_FW_ON_INIT) || defined(CONFIG_PM_SLEEP)
2174 priv->cached_pri_fw = NULL;
2175 priv->cached_fw = NULL;
2176#endif
2177
2178
2179 orinoco_register_pm_notifier(priv);
2180
2181 return priv;
2182}
2183EXPORT_SYMBOL(alloc_orinocodev);
2184
2185
2186
2187
2188
2189
2190
2191
2192int orinoco_if_add(struct orinoco_private *priv,
2193 unsigned long base_addr,
2194 unsigned int irq)
2195{
2196 struct wiphy *wiphy = priv_to_wiphy(priv);
2197 struct wireless_dev *wdev;
2198 struct net_device *dev;
2199 int ret;
2200
2201 dev = alloc_etherdev(sizeof(struct wireless_dev));
2202
2203 if (!dev)
2204 return -ENOMEM;
2205
2206
2207 wdev = netdev_priv(dev);
2208 wdev->wiphy = wiphy;
2209 wdev->iftype = NL80211_IFTYPE_STATION;
2210
2211
2212 dev->ieee80211_ptr = wdev;
2213 dev->netdev_ops = &orinoco_netdev_ops;
2214 dev->watchdog_timeo = HZ;
2215 dev->ethtool_ops = &orinoco_ethtool_ops;
2216 dev->wireless_handlers = &orinoco_handler_def;
2217#ifdef WIRELESS_SPY
2218 dev->wireless_data = &priv->wireless_data;
2219#endif
2220
2221
2222
2223 dev->hard_header_len += ENCAPS_OVERHEAD;
2224
2225 netif_carrier_off(dev);
2226
2227 memcpy(dev->dev_addr, wiphy->perm_addr, ETH_ALEN);
2228
2229 dev->base_addr = base_addr;
2230 dev->irq = irq;
2231
2232 SET_NETDEV_DEV(dev, priv->dev);
2233 ret = register_netdev(dev);
2234 if (ret)
2235 goto fail;
2236
2237 priv->ndev = dev;
2238
2239
2240 dev_dbg(priv->dev, "Registerred interface %s.\n", dev->name);
2241
2242 return 0;
2243
2244 fail:
2245 free_netdev(dev);
2246 return ret;
2247}
2248EXPORT_SYMBOL(orinoco_if_add);
2249
2250void orinoco_if_del(struct orinoco_private *priv)
2251{
2252 struct net_device *dev = priv->ndev;
2253
2254 unregister_netdev(dev);
2255 free_netdev(dev);
2256}
2257EXPORT_SYMBOL(orinoco_if_del);
2258
2259void free_orinocodev(struct orinoco_private *priv)
2260{
2261 struct wiphy *wiphy = priv_to_wiphy(priv);
2262 struct orinoco_rx_data *rx_data, *temp;
2263 struct orinoco_scan_data *sd, *sdtemp;
2264
2265 wiphy_unregister(wiphy);
2266
2267
2268
2269
2270 tasklet_kill(&priv->rx_tasklet);
2271
2272
2273 list_for_each_entry_safe(rx_data, temp, &priv->rx_list, list) {
2274 list_del(&rx_data->list);
2275
2276 dev_kfree_skb(rx_data->skb);
2277 kfree(rx_data->desc);
2278 kfree(rx_data);
2279 }
2280
2281 cancel_work_sync(&priv->process_scan);
2282
2283 list_for_each_entry_safe(sd, sdtemp, &priv->scan_list, list) {
2284 list_del(&sd->list);
2285
2286 if ((sd->len > 0) && sd->buf)
2287 kfree(sd->buf);
2288 kfree(sd);
2289 }
2290
2291 orinoco_unregister_pm_notifier(priv);
2292 orinoco_uncache_fw(priv);
2293
2294 priv->wpa_ie_len = 0;
2295 kfree(priv->wpa_ie);
2296 orinoco_mic_free(priv);
2297 wiphy_free(wiphy);
2298}
2299EXPORT_SYMBOL(free_orinocodev);
2300
2301int orinoco_up(struct orinoco_private *priv)
2302{
2303 struct net_device *dev = priv->ndev;
2304 unsigned long flags;
2305 int err;
2306
2307 spin_lock_irqsave(&priv->lock, flags);
2308
2309 err = orinoco_reinit_firmware(priv);
2310 if (err) {
2311 printk(KERN_ERR "%s: Error %d re-initializing firmware\n",
2312 dev->name, err);
2313 goto exit;
2314 }
2315
2316 netif_device_attach(dev);
2317 priv->hw_unavailable--;
2318
2319 if (priv->open && !priv->hw_unavailable) {
2320 err = __orinoco_up(priv);
2321 if (err)
2322 printk(KERN_ERR "%s: Error %d restarting card\n",
2323 dev->name, err);
2324 }
2325
2326exit:
2327 spin_unlock_irqrestore(&priv->lock, flags);
2328
2329 return 0;
2330}
2331EXPORT_SYMBOL(orinoco_up);
2332
2333void orinoco_down(struct orinoco_private *priv)
2334{
2335 struct net_device *dev = priv->ndev;
2336 unsigned long flags;
2337 int err;
2338
2339 spin_lock_irqsave(&priv->lock, flags);
2340 err = __orinoco_down(priv);
2341 if (err)
2342 printk(KERN_WARNING "%s: Error %d downing interface\n",
2343 dev->name, err);
2344
2345 netif_device_detach(dev);
2346 priv->hw_unavailable++;
2347 spin_unlock_irqrestore(&priv->lock, flags);
2348}
2349EXPORT_SYMBOL(orinoco_down);
2350
2351static void orinoco_get_drvinfo(struct net_device *dev,
2352 struct ethtool_drvinfo *info)
2353{
2354 struct orinoco_private *priv = ndev_priv(dev);
2355
2356 strncpy(info->driver, DRIVER_NAME, sizeof(info->driver) - 1);
2357 strncpy(info->version, DRIVER_VERSION, sizeof(info->version) - 1);
2358 strncpy(info->fw_version, priv->fw_name, sizeof(info->fw_version) - 1);
2359 if (dev->dev.parent)
2360 strncpy(info->bus_info, dev_name(dev->dev.parent),
2361 sizeof(info->bus_info) - 1);
2362 else
2363 snprintf(info->bus_info, sizeof(info->bus_info) - 1,
2364 "PCMCIA %p", priv->hw.iobase);
2365}
2366
2367static const struct ethtool_ops orinoco_ethtool_ops = {
2368 .get_drvinfo = orinoco_get_drvinfo,
2369 .get_link = ethtool_op_get_link,
2370};
2371
2372
2373
2374
2375
2376
2377
2378static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
2379 " (David Gibson <hermes@gibson.dropbear.id.au>, "
2380 "Pavel Roskin <proski@gnu.org>, et al)";
2381
2382static int __init init_orinoco(void)
2383{
2384 printk(KERN_DEBUG "%s\n", version);
2385 return 0;
2386}
2387
2388static void __exit exit_orinoco(void)
2389{
2390}
2391
2392module_init(init_orinoco);
2393module_exit(exit_orinoco);
2394