Commit | Line | Data |
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47445cb9 | 1 | /* main.c - (formerly known as dldwd_cs.c, orinoco_cs.c and orinoco.c) |
1da177e4 LT |
2 | * |
3 | * A driver for Hermes or Prism 2 chipset based PCMCIA wireless | |
4 | * adaptors, with Lucent/Agere, Intersil or Symbol firmware. | |
5 | * | |
6 | * Current maintainers (as of 29 September 2003) are: | |
7 | * Pavel Roskin <proski AT gnu.org> | |
8 | * and David Gibson <hermes AT gibson.dropbear.id.au> | |
9 | * | |
10 | * (C) Copyright David Gibson, IBM Corporation 2001-2003. | |
11 | * Copyright (C) 2000 David Gibson, Linuxcare Australia. | |
12 | * With some help from : | |
13 | * Copyright (C) 2001 Jean Tourrilhes, HP Labs | |
14 | * Copyright (C) 2001 Benjamin Herrenschmidt | |
15 | * | |
16 | * Based on dummy_cs.c 1.27 2000/06/12 21:27:25 | |
17 | * | |
18 | * Portions based on wvlan_cs.c 1.0.6, Copyright Andreas Neuhaus <andy | |
19 | * AT fasta.fh-dortmund.de> | |
20 | * http://www.stud.fh-dortmund.de/~andy/wvlan/ | |
21 | * | |
22 | * The contents of this file are subject to the Mozilla Public License | |
23 | * Version 1.1 (the "License"); you may not use this file except in | |
24 | * compliance with the License. You may obtain a copy of the License | |
25 | * at http://www.mozilla.org/MPL/ | |
26 | * | |
27 | * Software distributed under the License is distributed on an "AS IS" | |
28 | * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See | |
29 | * the License for the specific language governing rights and | |
30 | * limitations under the License. | |
31 | * | |
32 | * The initial developer of the original code is David A. Hinds | |
33 | * <dahinds AT users.sourceforge.net>. Portions created by David | |
34 | * A. Hinds are Copyright (C) 1999 David A. Hinds. All Rights | |
35 | * Reserved. | |
36 | * | |
37 | * Alternatively, the contents of this file may be used under the | |
38 | * terms of the GNU General Public License version 2 (the "GPL"), in | |
39 | * which case the provisions of the GPL are applicable instead of the | |
40 | * above. If you wish to allow the use of your version of this file | |
41 | * only under the terms of the GPL and not to allow others to use your | |
42 | * version of this file under the MPL, indicate your decision by | |
43 | * deleting the provisions above and replace them with the notice and | |
44 | * other provisions required by the GPL. If you do not delete the | |
45 | * provisions above, a recipient may use your version of this file | |
46 | * under either the MPL or the GPL. */ | |
47 | ||
48 | /* | |
1da177e4 | 49 | * TODO |
1da177e4 LT |
50 | * o Handle de-encapsulation within network layer, provide 802.11 |
51 | * headers (patch from Thomas 'Dent' Mirlacher) | |
1da177e4 LT |
52 | * o Fix possible races in SPY handling. |
53 | * o Disconnect wireless extensions from fundamental configuration. | |
54 | * o (maybe) Software WEP support (patch from Stano Meduna). | |
55 | * o (maybe) Use multiple Tx buffers - driver handling queue | |
56 | * rather than firmware. | |
57 | */ | |
58 | ||
59 | /* Locking and synchronization: | |
60 | * | |
61 | * The basic principle is that everything is serialized through a | |
62 | * single spinlock, priv->lock. The lock is used in user, bh and irq | |
63 | * context, so when taken outside hardirq context it should always be | |
64 | * taken with interrupts disabled. The lock protects both the | |
65 | * hardware and the struct orinoco_private. | |
66 | * | |
67 | * Another flag, priv->hw_unavailable indicates that the hardware is | |
68 | * unavailable for an extended period of time (e.g. suspended, or in | |
69 | * the middle of a hard reset). This flag is protected by the | |
70 | * spinlock. All code which touches the hardware should check the | |
71 | * flag after taking the lock, and if it is set, give up on whatever | |
72 | * they are doing and drop the lock again. The orinoco_lock() | |
73 | * function handles this (it unlocks and returns -EBUSY if | |
74 | * hw_unavailable is non-zero). | |
75 | */ | |
76 | ||
77 | #define DRIVER_NAME "orinoco" | |
78 | ||
1da177e4 LT |
79 | #include <linux/module.h> |
80 | #include <linux/kernel.h> | |
5a0e3ad6 | 81 | #include <linux/slab.h> |
1da177e4 | 82 | #include <linux/init.h> |
d03032af | 83 | #include <linux/delay.h> |
8e638267 | 84 | #include <linux/device.h> |
1da177e4 | 85 | #include <linux/netdevice.h> |
1da177e4 | 86 | #include <linux/etherdevice.h> |
39d1ffee | 87 | #include <linux/suspend.h> |
9c974fb1 | 88 | #include <linux/if_arp.h> |
1da177e4 | 89 | #include <linux/wireless.h> |
2c706002 | 90 | #include <linux/ieee80211.h> |
620554e4 | 91 | #include <net/iw_handler.h> |
ea60a6aa | 92 | #include <net/cfg80211.h> |
1da177e4 | 93 | |
1da177e4 | 94 | #include "hermes_rid.h" |
3994d502 | 95 | #include "hermes_dld.h" |
712a4342 | 96 | #include "hw.h" |
fb791b1c | 97 | #include "scan.h" |
4adb474b | 98 | #include "mic.h" |
37a2e566 | 99 | #include "fw.h" |
cb1576a8 | 100 | #include "wext.h" |
ea60a6aa | 101 | #include "cfg.h" |
cb1576a8 | 102 | #include "main.h" |
fb791b1c | 103 | |
1da177e4 | 104 | #include "orinoco.h" |
1da177e4 LT |
105 | |
106 | /********************************************************************/ | |
107 | /* Module information */ | |
108 | /********************************************************************/ | |
109 | ||
b2f30a0a DK |
110 | MODULE_AUTHOR("Pavel Roskin <proski@gnu.org> & " |
111 | "David Gibson <hermes@gibson.dropbear.id.au>"); | |
112 | MODULE_DESCRIPTION("Driver for Lucent Orinoco, Prism II based " | |
113 | "and similar wireless cards"); | |
1da177e4 LT |
114 | MODULE_LICENSE("Dual MPL/GPL"); |
115 | ||
116 | /* Level of debugging. Used in the macros in orinoco.h */ | |
117 | #ifdef ORINOCO_DEBUG | |
118 | int orinoco_debug = ORINOCO_DEBUG; | |
2131266d | 119 | EXPORT_SYMBOL(orinoco_debug); |
1da177e4 LT |
120 | module_param(orinoco_debug, int, 0644); |
121 | MODULE_PARM_DESC(orinoco_debug, "Debug level"); | |
1da177e4 LT |
122 | #endif |
123 | ||
124 | static int suppress_linkstatus; /* = 0 */ | |
125 | module_param(suppress_linkstatus, bool, 0644); | |
126 | MODULE_PARM_DESC(suppress_linkstatus, "Don't log link status changes"); | |
b2f30a0a | 127 | |
7bb7c3a3 DG |
128 | static int ignore_disconnect; /* = 0 */ |
129 | module_param(ignore_disconnect, int, 0644); | |
b2f30a0a DK |
130 | MODULE_PARM_DESC(ignore_disconnect, |
131 | "Don't report lost link to the network layer"); | |
1da177e4 | 132 | |
cb1576a8 | 133 | int force_monitor; /* = 0 */ |
98c4cae1 CH |
134 | module_param(force_monitor, int, 0644); |
135 | MODULE_PARM_DESC(force_monitor, "Allow monitor mode for all firmware versions"); | |
136 | ||
1da177e4 LT |
137 | /********************************************************************/ |
138 | /* Internal constants */ | |
139 | /********************************************************************/ | |
140 | ||
95dd91fb CH |
141 | /* 802.2 LLC/SNAP header used for Ethernet encapsulation over 802.11 */ |
142 | static const u8 encaps_hdr[] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00}; | |
143 | #define ENCAPS_OVERHEAD (sizeof(encaps_hdr) + 2) | |
144 | ||
1da177e4 | 145 | #define ORINOCO_MIN_MTU 256 |
2c706002 | 146 | #define ORINOCO_MAX_MTU (IEEE80211_MAX_DATA_LEN - ENCAPS_OVERHEAD) |
1da177e4 | 147 | |
1da177e4 LT |
148 | #define MAX_IRQLOOPS_PER_IRQ 10 |
149 | #define MAX_IRQLOOPS_PER_JIFFY (20000/HZ) /* Based on a guestimate of | |
150 | * how many events the | |
151 | * device could | |
152 | * legitimately generate */ | |
1da177e4 LT |
153 | |
154 | #define DUMMY_FID 0xFFFF | |
155 | ||
156 | /*#define MAX_MULTICAST(priv) (priv->firmware_type == FIRMWARE_TYPE_AGERE ? \ | |
157 | HERMES_MAX_MULTICAST : 0)*/ | |
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 \ | |
a94e8427 | 163 | | HERMES_EV_INFDROP) |
1da177e4 | 164 | |
1da177e4 LT |
165 | /********************************************************************/ |
166 | /* Data types */ | |
167 | /********************************************************************/ | |
168 | ||
30c2d3b4 PR |
169 | /* Beginning of the Tx descriptor, used in TxExc handling */ |
170 | struct hermes_txexc_data { | |
171 | struct hermes_tx_descriptor desc; | |
d133ae4c PR |
172 | __le16 frame_ctl; |
173 | __le16 duration_id; | |
95dd91fb | 174 | u8 addr1[ETH_ALEN]; |
ba2d3587 | 175 | } __packed; |
1da177e4 | 176 | |
8f2abf44 | 177 | /* Rx frame header except compatibility 802.3 header */ |
1da177e4 | 178 | struct hermes_rx_descriptor { |
8f2abf44 | 179 | /* Control */ |
d133ae4c PR |
180 | __le16 status; |
181 | __le32 time; | |
1da177e4 LT |
182 | u8 silence; |
183 | u8 signal; | |
184 | u8 rate; | |
185 | u8 rxflow; | |
d133ae4c | 186 | __le32 reserved; |
8f2abf44 CH |
187 | |
188 | /* 802.11 header */ | |
d133ae4c PR |
189 | __le16 frame_ctl; |
190 | __le16 duration_id; | |
8f2abf44 CH |
191 | u8 addr1[ETH_ALEN]; |
192 | u8 addr2[ETH_ALEN]; | |
193 | u8 addr3[ETH_ALEN]; | |
d133ae4c | 194 | __le16 seq_ctl; |
8f2abf44 CH |
195 | u8 addr4[ETH_ALEN]; |
196 | ||
197 | /* Data length */ | |
d133ae4c | 198 | __le16 data_len; |
ba2d3587 | 199 | } __packed; |
1da177e4 | 200 | |
47166791 DK |
201 | struct orinoco_rx_data { |
202 | struct hermes_rx_descriptor *desc; | |
203 | struct sk_buff *skb; | |
204 | struct list_head list; | |
205 | }; | |
206 | ||
c63cdbe8 DK |
207 | struct orinoco_scan_data { |
208 | void *buf; | |
209 | size_t len; | |
210 | int type; | |
211 | struct list_head list; | |
212 | }; | |
213 | ||
1da177e4 LT |
214 | /********************************************************************/ |
215 | /* Function prototypes */ | |
216 | /********************************************************************/ | |
217 | ||
721aa2f7 | 218 | static int __orinoco_set_multicast_list(struct net_device *dev); |
6415f7df DK |
219 | static int __orinoco_up(struct orinoco_private *priv); |
220 | static int __orinoco_down(struct orinoco_private *priv); | |
721aa2f7 | 221 | static int __orinoco_commit(struct orinoco_private *priv); |
1da177e4 LT |
222 | |
223 | /********************************************************************/ | |
224 | /* Internal helper functions */ | |
225 | /********************************************************************/ | |
226 | ||
cb1576a8 | 227 | void set_port_type(struct orinoco_private *priv) |
1da177e4 LT |
228 | { |
229 | switch (priv->iw_mode) { | |
5217c571 | 230 | case NL80211_IFTYPE_STATION: |
1da177e4 LT |
231 | priv->port_type = 1; |
232 | priv->createibss = 0; | |
233 | break; | |
5217c571 | 234 | case NL80211_IFTYPE_ADHOC: |
1da177e4 LT |
235 | if (priv->prefer_port3) { |
236 | priv->port_type = 3; | |
237 | priv->createibss = 0; | |
238 | } else { | |
239 | priv->port_type = priv->ibss_port; | |
240 | priv->createibss = 1; | |
241 | } | |
242 | break; | |
5217c571 | 243 | case NL80211_IFTYPE_MONITOR: |
98c4cae1 CH |
244 | priv->port_type = 3; |
245 | priv->createibss = 0; | |
246 | break; | |
1da177e4 LT |
247 | default: |
248 | printk(KERN_ERR "%s: Invalid priv->iw_mode in set_port_type()\n", | |
249 | priv->ndev->name); | |
250 | } | |
251 | } | |
252 | ||
253 | /********************************************************************/ | |
254 | /* Device methods */ | |
255 | /********************************************************************/ | |
256 | ||
593ef09c | 257 | int orinoco_open(struct net_device *dev) |
1da177e4 | 258 | { |
ea60a6aa | 259 | struct orinoco_private *priv = ndev_priv(dev); |
1da177e4 LT |
260 | unsigned long flags; |
261 | int err; | |
262 | ||
263 | if (orinoco_lock(priv, &flags) != 0) | |
264 | return -EBUSY; | |
265 | ||
a2608362 | 266 | err = __orinoco_up(priv); |
1da177e4 | 267 | |
a94e8427 | 268 | if (!err) |
1da177e4 LT |
269 | priv->open = 1; |
270 | ||
271 | orinoco_unlock(priv, &flags); | |
272 | ||
273 | return err; | |
274 | } | |
593ef09c | 275 | EXPORT_SYMBOL(orinoco_open); |
1da177e4 | 276 | |
593ef09c | 277 | int orinoco_stop(struct net_device *dev) |
1da177e4 | 278 | { |
ea60a6aa | 279 | struct orinoco_private *priv = ndev_priv(dev); |
1da177e4 LT |
280 | int err = 0; |
281 | ||
282 | /* We mustn't use orinoco_lock() here, because we need to be | |
283 | able to close the interface even if hw_unavailable is set | |
284 | (e.g. as we're released after a PC Card removal) */ | |
bcad6e80 | 285 | orinoco_lock_irq(priv); |
1da177e4 LT |
286 | |
287 | priv->open = 0; | |
288 | ||
a2608362 | 289 | err = __orinoco_down(priv); |
1da177e4 | 290 | |
bcad6e80 | 291 | orinoco_unlock_irq(priv); |
1da177e4 LT |
292 | |
293 | return err; | |
294 | } | |
593ef09c | 295 | EXPORT_SYMBOL(orinoco_stop); |
1da177e4 | 296 | |
593ef09c | 297 | struct net_device_stats *orinoco_get_stats(struct net_device *dev) |
1da177e4 | 298 | { |
ea60a6aa | 299 | struct orinoco_private *priv = ndev_priv(dev); |
6fe9deb1 | 300 | |
1da177e4 LT |
301 | return &priv->stats; |
302 | } | |
593ef09c | 303 | EXPORT_SYMBOL(orinoco_get_stats); |
1da177e4 | 304 | |
593ef09c | 305 | void orinoco_set_multicast_list(struct net_device *dev) |
1da177e4 | 306 | { |
ea60a6aa | 307 | struct orinoco_private *priv = ndev_priv(dev); |
1da177e4 LT |
308 | unsigned long flags; |
309 | ||
310 | if (orinoco_lock(priv, &flags) != 0) { | |
311 | printk(KERN_DEBUG "%s: orinoco_set_multicast_list() " | |
312 | "called when hw_unavailable\n", dev->name); | |
313 | return; | |
314 | } | |
315 | ||
316 | __orinoco_set_multicast_list(dev); | |
317 | orinoco_unlock(priv, &flags); | |
318 | } | |
593ef09c | 319 | EXPORT_SYMBOL(orinoco_set_multicast_list); |
1da177e4 | 320 | |
593ef09c | 321 | int orinoco_change_mtu(struct net_device *dev, int new_mtu) |
1da177e4 | 322 | { |
ea60a6aa | 323 | struct orinoco_private *priv = ndev_priv(dev); |
1da177e4 | 324 | |
a94e8427 | 325 | if ((new_mtu < ORINOCO_MIN_MTU) || (new_mtu > ORINOCO_MAX_MTU)) |
1da177e4 LT |
326 | return -EINVAL; |
327 | ||
2c706002 | 328 | /* MTU + encapsulation + header length */ |
a94e8427 DK |
329 | if ((new_mtu + ENCAPS_OVERHEAD + sizeof(struct ieee80211_hdr)) > |
330 | (priv->nicbuf_size - ETH_HLEN)) | |
1da177e4 LT |
331 | return -EINVAL; |
332 | ||
333 | dev->mtu = new_mtu; | |
334 | ||
335 | return 0; | |
336 | } | |
593ef09c | 337 | EXPORT_SYMBOL(orinoco_change_mtu); |
1da177e4 LT |
338 | |
339 | /********************************************************************/ | |
340 | /* Tx path */ | |
341 | /********************************************************************/ | |
342 | ||
bac6fafd DK |
343 | /* Add encapsulation and MIC to the existing SKB. |
344 | * The main xmit routine will then send the whole lot to the card. | |
345 | * Need 8 bytes headroom | |
346 | * Need 8 bytes tailroom | |
347 | * | |
348 | * With encapsulated ethernet II frame | |
349 | * -------- | |
350 | * 803.3 header (14 bytes) | |
351 | * dst[6] | |
352 | * -------- src[6] | |
353 | * 803.3 header (14 bytes) len[2] | |
354 | * dst[6] 803.2 header (8 bytes) | |
355 | * src[6] encaps[6] | |
356 | * len[2] <- leave alone -> len[2] | |
357 | * -------- -------- <-- 0 | |
358 | * Payload Payload | |
359 | * ... ... | |
360 | * | |
361 | * -------- -------- | |
362 | * MIC (8 bytes) | |
363 | * -------- | |
364 | * | |
365 | * returns 0 on success, -ENOMEM on error. | |
366 | */ | |
367 | int orinoco_process_xmit_skb(struct sk_buff *skb, | |
368 | struct net_device *dev, | |
369 | struct orinoco_private *priv, | |
370 | int *tx_control, | |
371 | u8 *mic_buf) | |
372 | { | |
373 | struct orinoco_tkip_key *key; | |
374 | struct ethhdr *eh; | |
375 | int do_mic; | |
376 | ||
377 | key = (struct orinoco_tkip_key *) priv->keys[priv->tx_key].key; | |
378 | ||
379 | do_mic = ((priv->encode_alg == ORINOCO_ALG_TKIP) && | |
380 | (key != NULL)); | |
381 | ||
382 | if (do_mic) | |
383 | *tx_control |= (priv->tx_key << HERMES_MIC_KEY_ID_SHIFT) | | |
384 | HERMES_TXCTRL_MIC; | |
385 | ||
386 | eh = (struct ethhdr *)skb->data; | |
387 | ||
388 | /* Encapsulate Ethernet-II frames */ | |
389 | if (ntohs(eh->h_proto) > ETH_DATA_LEN) { /* Ethernet-II frame */ | |
390 | struct header_struct { | |
391 | struct ethhdr eth; /* 802.3 header */ | |
392 | u8 encap[6]; /* 802.2 header */ | |
ba2d3587 | 393 | } __packed hdr; |
bac6fafd DK |
394 | int len = skb->len + sizeof(encaps_hdr) - (2 * ETH_ALEN); |
395 | ||
396 | if (skb_headroom(skb) < ENCAPS_OVERHEAD) { | |
397 | if (net_ratelimit()) | |
398 | printk(KERN_ERR | |
399 | "%s: Not enough headroom for 802.2 headers %d\n", | |
400 | dev->name, skb_headroom(skb)); | |
401 | return -ENOMEM; | |
402 | } | |
403 | ||
404 | /* Fill in new header */ | |
405 | memcpy(&hdr.eth, eh, 2 * ETH_ALEN); | |
406 | hdr.eth.h_proto = htons(len); | |
407 | memcpy(hdr.encap, encaps_hdr, sizeof(encaps_hdr)); | |
408 | ||
409 | /* Make room for the new header, and copy it in */ | |
410 | eh = (struct ethhdr *) skb_push(skb, ENCAPS_OVERHEAD); | |
411 | memcpy(eh, &hdr, sizeof(hdr)); | |
412 | } | |
413 | ||
414 | /* Calculate Michael MIC */ | |
415 | if (do_mic) { | |
416 | size_t len = skb->len - ETH_HLEN; | |
417 | u8 *mic = &mic_buf[0]; | |
418 | ||
419 | /* Have to write to an even address, so copy the spare | |
420 | * byte across */ | |
421 | if (skb->len % 2) { | |
422 | *mic = skb->data[skb->len - 1]; | |
423 | mic++; | |
424 | } | |
425 | ||
426 | orinoco_mic(priv->tx_tfm_mic, key->tx_mic, | |
427 | eh->h_dest, eh->h_source, 0 /* priority */, | |
428 | skb->data + ETH_HLEN, | |
429 | len, mic); | |
430 | } | |
431 | ||
432 | return 0; | |
433 | } | |
434 | EXPORT_SYMBOL(orinoco_process_xmit_skb); | |
435 | ||
d0cf9c0d | 436 | static netdev_tx_t orinoco_xmit(struct sk_buff *skb, struct net_device *dev) |
1da177e4 | 437 | { |
ea60a6aa | 438 | struct orinoco_private *priv = ndev_priv(dev); |
1da177e4 LT |
439 | struct net_device_stats *stats = &priv->stats; |
440 | hermes_t *hw = &priv->hw; | |
441 | int err = 0; | |
442 | u16 txfid = priv->txfid; | |
6eecad77 | 443 | int tx_control; |
1da177e4 | 444 | unsigned long flags; |
bac6fafd | 445 | u8 mic_buf[MICHAEL_MIC_LEN+1]; |
1da177e4 | 446 | |
a94e8427 | 447 | if (!netif_running(dev)) { |
1da177e4 LT |
448 | printk(KERN_ERR "%s: Tx on stopped device!\n", |
449 | dev->name); | |
b34b867e | 450 | return NETDEV_TX_BUSY; |
1da177e4 | 451 | } |
6fe9deb1 | 452 | |
1da177e4 | 453 | if (netif_queue_stopped(dev)) { |
6fe9deb1 | 454 | printk(KERN_DEBUG "%s: Tx while transmitter busy!\n", |
1da177e4 | 455 | dev->name); |
b34b867e | 456 | return NETDEV_TX_BUSY; |
1da177e4 | 457 | } |
6fe9deb1 | 458 | |
1da177e4 LT |
459 | if (orinoco_lock(priv, &flags) != 0) { |
460 | printk(KERN_ERR "%s: orinoco_xmit() called while hw_unavailable\n", | |
461 | dev->name); | |
b34b867e | 462 | return NETDEV_TX_BUSY; |
1da177e4 LT |
463 | } |
464 | ||
5217c571 DK |
465 | if (!netif_carrier_ok(dev) || |
466 | (priv->iw_mode == NL80211_IFTYPE_MONITOR)) { | |
1da177e4 | 467 | /* Oops, the firmware hasn't established a connection, |
6fe9deb1 DK |
468 | silently drop the packet (this seems to be the |
469 | safest approach). */ | |
470e2aa6 | 470 | goto drop; |
1da177e4 LT |
471 | } |
472 | ||
8d5be088 | 473 | /* Check packet length */ |
a28dc81d | 474 | if (skb->len < ETH_HLEN) |
470e2aa6 | 475 | goto drop; |
1da177e4 | 476 | |
6eecad77 DK |
477 | tx_control = HERMES_TXCTRL_TX_OK | HERMES_TXCTRL_TX_EX; |
478 | ||
bac6fafd DK |
479 | err = orinoco_process_xmit_skb(skb, dev, priv, &tx_control, |
480 | &mic_buf[0]); | |
481 | if (err) | |
482 | goto drop; | |
23edcc41 | 483 | |
6eecad77 DK |
484 | if (priv->has_alt_txcntl) { |
485 | /* WPA enabled firmwares have tx_cntl at the end of | |
486 | * the 802.11 header. So write zeroed descriptor and | |
487 | * 802.11 header at the same time | |
488 | */ | |
489 | char desc[HERMES_802_3_OFFSET]; | |
490 | __le16 *txcntl = (__le16 *) &desc[HERMES_TXCNTL2_OFFSET]; | |
491 | ||
492 | memset(&desc, 0, sizeof(desc)); | |
493 | ||
494 | *txcntl = cpu_to_le16(tx_control); | |
b42f2074 DK |
495 | err = hw->ops->bap_pwrite(hw, USER_BAP, &desc, sizeof(desc), |
496 | txfid, 0); | |
6eecad77 DK |
497 | if (err) { |
498 | if (net_ratelimit()) | |
499 | printk(KERN_ERR "%s: Error %d writing Tx " | |
500 | "descriptor to BAP\n", dev->name, err); | |
501 | goto busy; | |
502 | } | |
503 | } else { | |
504 | struct hermes_tx_descriptor desc; | |
505 | ||
506 | memset(&desc, 0, sizeof(desc)); | |
507 | ||
508 | desc.tx_control = cpu_to_le16(tx_control); | |
b42f2074 DK |
509 | err = hw->ops->bap_pwrite(hw, USER_BAP, &desc, sizeof(desc), |
510 | txfid, 0); | |
6eecad77 DK |
511 | if (err) { |
512 | if (net_ratelimit()) | |
513 | printk(KERN_ERR "%s: Error %d writing Tx " | |
514 | "descriptor to BAP\n", dev->name, err); | |
515 | goto busy; | |
516 | } | |
1da177e4 | 517 | |
6eecad77 DK |
518 | /* Clear the 802.11 header and data length fields - some |
519 | * firmwares (e.g. Lucent/Agere 8.xx) appear to get confused | |
520 | * if this isn't done. */ | |
521 | hermes_clear_words(hw, HERMES_DATA0, | |
522 | HERMES_802_3_OFFSET - HERMES_802_11_OFFSET); | |
523 | } | |
1da177e4 | 524 | |
b42f2074 DK |
525 | err = hw->ops->bap_pwrite(hw, USER_BAP, skb->data, skb->len, |
526 | txfid, HERMES_802_3_OFFSET); | |
1da177e4 LT |
527 | if (err) { |
528 | printk(KERN_ERR "%s: Error %d writing packet to BAP\n", | |
529 | dev->name, err); | |
470e2aa6 | 530 | goto busy; |
1da177e4 LT |
531 | } |
532 | ||
bac6fafd DK |
533 | if (tx_control & HERMES_TXCTRL_MIC) { |
534 | size_t offset = HERMES_802_3_OFFSET + skb->len; | |
535 | size_t len = MICHAEL_MIC_LEN; | |
23edcc41 | 536 | |
bac6fafd DK |
537 | if (offset % 2) { |
538 | offset--; | |
539 | len++; | |
23edcc41 | 540 | } |
b42f2074 | 541 | err = hw->ops->bap_pwrite(hw, USER_BAP, &mic_buf[0], len, |
bac6fafd | 542 | txfid, offset); |
23edcc41 DK |
543 | if (err) { |
544 | printk(KERN_ERR "%s: Error %d writing MIC to BAP\n", | |
545 | dev->name, err); | |
546 | goto busy; | |
547 | } | |
548 | } | |
549 | ||
1da177e4 LT |
550 | /* Finally, we actually initiate the send */ |
551 | netif_stop_queue(dev); | |
552 | ||
b42f2074 | 553 | err = hw->ops->cmd_wait(hw, HERMES_CMD_TX | HERMES_CMD_RECL, |
1da177e4 LT |
554 | txfid, NULL); |
555 | if (err) { | |
556 | netif_start_queue(dev); | |
c367c21c AM |
557 | if (net_ratelimit()) |
558 | printk(KERN_ERR "%s: Error %d transmitting packet\n", | |
559 | dev->name, err); | |
470e2aa6 | 560 | goto busy; |
1da177e4 LT |
561 | } |
562 | ||
23edcc41 | 563 | stats->tx_bytes += HERMES_802_3_OFFSET + skb->len; |
470e2aa6 | 564 | goto ok; |
1da177e4 | 565 | |
470e2aa6 PR |
566 | drop: |
567 | stats->tx_errors++; | |
568 | stats->tx_dropped++; | |
1da177e4 | 569 | |
470e2aa6 PR |
570 | ok: |
571 | orinoco_unlock(priv, &flags); | |
1da177e4 | 572 | dev_kfree_skb(skb); |
b34b867e | 573 | return NETDEV_TX_OK; |
1da177e4 | 574 | |
470e2aa6 | 575 | busy: |
2c1bd260 JB |
576 | if (err == -EIO) |
577 | schedule_work(&priv->reset_work); | |
1da177e4 | 578 | orinoco_unlock(priv, &flags); |
b34b867e | 579 | return NETDEV_TX_BUSY; |
1da177e4 LT |
580 | } |
581 | ||
582 | static void __orinoco_ev_alloc(struct net_device *dev, hermes_t *hw) | |
583 | { | |
ea60a6aa | 584 | struct orinoco_private *priv = ndev_priv(dev); |
1da177e4 LT |
585 | u16 fid = hermes_read_regn(hw, ALLOCFID); |
586 | ||
587 | if (fid != priv->txfid) { | |
588 | if (fid != DUMMY_FID) | |
589 | printk(KERN_WARNING "%s: Allocate event on unexpected fid (%04X)\n", | |
590 | dev->name, fid); | |
591 | return; | |
592 | } | |
593 | ||
594 | hermes_write_regn(hw, ALLOCFID, DUMMY_FID); | |
595 | } | |
596 | ||
597 | static void __orinoco_ev_tx(struct net_device *dev, hermes_t *hw) | |
598 | { | |
ea60a6aa | 599 | struct orinoco_private *priv = ndev_priv(dev); |
1da177e4 LT |
600 | struct net_device_stats *stats = &priv->stats; |
601 | ||
602 | stats->tx_packets++; | |
603 | ||
604 | netif_wake_queue(dev); | |
605 | ||
606 | hermes_write_regn(hw, TXCOMPLFID, DUMMY_FID); | |
607 | } | |
608 | ||
609 | static void __orinoco_ev_txexc(struct net_device *dev, hermes_t *hw) | |
610 | { | |
ea60a6aa | 611 | struct orinoco_private *priv = ndev_priv(dev); |
1da177e4 LT |
612 | struct net_device_stats *stats = &priv->stats; |
613 | u16 fid = hermes_read_regn(hw, TXCOMPLFID); | |
d133ae4c | 614 | u16 status; |
30c2d3b4 | 615 | struct hermes_txexc_data hdr; |
1da177e4 LT |
616 | int err = 0; |
617 | ||
618 | if (fid == DUMMY_FID) | |
619 | return; /* Nothing's really happened */ | |
620 | ||
48ca7038 | 621 | /* Read part of the frame header - we need status and addr1 */ |
b42f2074 DK |
622 | err = hw->ops->bap_pread(hw, IRQ_BAP, &hdr, |
623 | sizeof(struct hermes_txexc_data), | |
624 | fid, 0); | |
95dd91fb CH |
625 | |
626 | hermes_write_regn(hw, TXCOMPLFID, DUMMY_FID); | |
627 | stats->tx_errors++; | |
628 | ||
1da177e4 LT |
629 | if (err) { |
630 | printk(KERN_WARNING "%s: Unable to read descriptor on Tx error " | |
631 | "(FID=%04X error %d)\n", | |
632 | dev->name, fid, err); | |
95dd91fb | 633 | return; |
1da177e4 | 634 | } |
6fe9deb1 | 635 | |
95dd91fb CH |
636 | DEBUG(1, "%s: Tx error, err %d (FID=%04X)\n", dev->name, |
637 | err, fid); | |
6fe9deb1 | 638 | |
95dd91fb CH |
639 | /* We produce a TXDROP event only for retry or lifetime |
640 | * exceeded, because that's the only status that really mean | |
641 | * that this particular node went away. | |
642 | * Other errors means that *we* screwed up. - Jean II */ | |
30c2d3b4 | 643 | status = le16_to_cpu(hdr.desc.status); |
d133ae4c | 644 | if (status & (HERMES_TXSTAT_RETRYERR | HERMES_TXSTAT_AGEDERR)) { |
95dd91fb CH |
645 | union iwreq_data wrqu; |
646 | ||
647 | /* Copy 802.11 dest address. | |
648 | * We use the 802.11 header because the frame may | |
649 | * not be 802.3 or may be mangled... | |
650 | * In Ad-Hoc mode, it will be the node address. | |
651 | * In managed mode, it will be most likely the AP addr | |
652 | * User space will figure out how to convert it to | |
653 | * whatever it needs (IP address or else). | |
654 | * - Jean II */ | |
655 | memcpy(wrqu.addr.sa_data, hdr.addr1, ETH_ALEN); | |
656 | wrqu.addr.sa_family = ARPHRD_ETHER; | |
657 | ||
658 | /* Send event to user space */ | |
659 | wireless_send_event(dev, IWEVTXDROP, &wrqu, NULL); | |
660 | } | |
1da177e4 LT |
661 | |
662 | netif_wake_queue(dev); | |
1da177e4 LT |
663 | } |
664 | ||
593ef09c | 665 | void orinoco_tx_timeout(struct net_device *dev) |
1da177e4 | 666 | { |
ea60a6aa | 667 | struct orinoco_private *priv = ndev_priv(dev); |
1da177e4 LT |
668 | struct net_device_stats *stats = &priv->stats; |
669 | struct hermes *hw = &priv->hw; | |
670 | ||
671 | printk(KERN_WARNING "%s: Tx timeout! " | |
672 | "ALLOCFID=%04x, TXCOMPLFID=%04x, EVSTAT=%04x\n", | |
673 | dev->name, hermes_read_regn(hw, ALLOCFID), | |
674 | hermes_read_regn(hw, TXCOMPLFID), hermes_read_regn(hw, EVSTAT)); | |
675 | ||
676 | stats->tx_errors++; | |
677 | ||
678 | schedule_work(&priv->reset_work); | |
679 | } | |
593ef09c | 680 | EXPORT_SYMBOL(orinoco_tx_timeout); |
1da177e4 LT |
681 | |
682 | /********************************************************************/ | |
683 | /* Rx path (data frames) */ | |
684 | /********************************************************************/ | |
685 | ||
686 | /* Does the frame have a SNAP header indicating it should be | |
687 | * de-encapsulated to Ethernet-II? */ | |
688 | static inline int is_ethersnap(void *_hdr) | |
689 | { | |
690 | u8 *hdr = _hdr; | |
691 | ||
692 | /* We de-encapsulate all packets which, a) have SNAP headers | |
693 | * (i.e. SSAP=DSAP=0xaa and CTRL=0x3 in the 802.2 LLC header | |
694 | * and where b) the OUI of the SNAP header is 00:00:00 or | |
695 | * 00:00:f8 - we need both because different APs appear to use | |
696 | * different OUIs for some reason */ | |
697 | return (memcmp(hdr, &encaps_hdr, 5) == 0) | |
a94e8427 | 698 | && ((hdr[5] == 0x00) || (hdr[5] == 0xf8)); |
1da177e4 LT |
699 | } |
700 | ||
701 | static inline void orinoco_spy_gather(struct net_device *dev, u_char *mac, | |
702 | int level, int noise) | |
703 | { | |
343c686c PR |
704 | struct iw_quality wstats; |
705 | wstats.level = level - 0x95; | |
706 | wstats.noise = noise - 0x95; | |
707 | wstats.qual = (level > noise) ? (level - noise) : 0; | |
f941f859 | 708 | wstats.updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM; |
343c686c PR |
709 | /* Update spy records */ |
710 | wireless_spy_update(dev, mac, &wstats); | |
1da177e4 LT |
711 | } |
712 | ||
713 | static void orinoco_stat_gather(struct net_device *dev, | |
714 | struct sk_buff *skb, | |
715 | struct hermes_rx_descriptor *desc) | |
716 | { | |
ea60a6aa | 717 | struct orinoco_private *priv = ndev_priv(dev); |
1da177e4 LT |
718 | |
719 | /* Using spy support with lots of Rx packets, like in an | |
720 | * infrastructure (AP), will really slow down everything, because | |
721 | * the MAC address must be compared to each entry of the spy list. | |
722 | * If the user really asks for it (set some address in the | |
723 | * spy list), we do it, but he will pay the price. | |
724 | * Note that to get here, you need both WIRELESS_SPY | |
725 | * compiled in AND some addresses in the list !!! | |
726 | */ | |
727 | /* Note : gcc will optimise the whole section away if | |
728 | * WIRELESS_SPY is not defined... - Jean II */ | |
729 | if (SPY_NUMBER(priv)) { | |
98e399f8 | 730 | orinoco_spy_gather(dev, skb_mac_header(skb) + ETH_ALEN, |
1da177e4 LT |
731 | desc->signal, desc->silence); |
732 | } | |
733 | } | |
734 | ||
98c4cae1 CH |
735 | /* |
736 | * orinoco_rx_monitor - handle received monitor frames. | |
737 | * | |
738 | * Arguments: | |
739 | * dev network device | |
740 | * rxfid received FID | |
741 | * desc rx descriptor of the frame | |
742 | * | |
743 | * Call context: interrupt | |
744 | */ | |
745 | static void orinoco_rx_monitor(struct net_device *dev, u16 rxfid, | |
746 | struct hermes_rx_descriptor *desc) | |
747 | { | |
748 | u32 hdrlen = 30; /* return full header by default */ | |
749 | u32 datalen = 0; | |
750 | u16 fc; | |
751 | int err; | |
752 | int len; | |
753 | struct sk_buff *skb; | |
ea60a6aa | 754 | struct orinoco_private *priv = ndev_priv(dev); |
98c4cae1 CH |
755 | struct net_device_stats *stats = &priv->stats; |
756 | hermes_t *hw = &priv->hw; | |
757 | ||
758 | len = le16_to_cpu(desc->data_len); | |
759 | ||
760 | /* Determine the size of the header and the data */ | |
761 | fc = le16_to_cpu(desc->frame_ctl); | |
762 | switch (fc & IEEE80211_FCTL_FTYPE) { | |
763 | case IEEE80211_FTYPE_DATA: | |
764 | if ((fc & IEEE80211_FCTL_TODS) | |
765 | && (fc & IEEE80211_FCTL_FROMDS)) | |
766 | hdrlen = 30; | |
767 | else | |
768 | hdrlen = 24; | |
769 | datalen = len; | |
770 | break; | |
771 | case IEEE80211_FTYPE_MGMT: | |
772 | hdrlen = 24; | |
773 | datalen = len; | |
774 | break; | |
775 | case IEEE80211_FTYPE_CTL: | |
776 | switch (fc & IEEE80211_FCTL_STYPE) { | |
777 | case IEEE80211_STYPE_PSPOLL: | |
778 | case IEEE80211_STYPE_RTS: | |
779 | case IEEE80211_STYPE_CFEND: | |
780 | case IEEE80211_STYPE_CFENDACK: | |
781 | hdrlen = 16; | |
782 | break; | |
783 | case IEEE80211_STYPE_CTS: | |
784 | case IEEE80211_STYPE_ACK: | |
785 | hdrlen = 10; | |
786 | break; | |
787 | } | |
788 | break; | |
789 | default: | |
790 | /* Unknown frame type */ | |
791 | break; | |
792 | } | |
793 | ||
794 | /* sanity check the length */ | |
2c706002 | 795 | if (datalen > IEEE80211_MAX_DATA_LEN + 12) { |
98c4cae1 CH |
796 | printk(KERN_DEBUG "%s: oversized monitor frame, " |
797 | "data length = %d\n", dev->name, datalen); | |
98c4cae1 CH |
798 | stats->rx_length_errors++; |
799 | goto update_stats; | |
800 | } | |
801 | ||
802 | skb = dev_alloc_skb(hdrlen + datalen); | |
803 | if (!skb) { | |
804 | printk(KERN_WARNING "%s: Cannot allocate skb for monitor frame\n", | |
805 | dev->name); | |
bb6e093d | 806 | goto update_stats; |
98c4cae1 CH |
807 | } |
808 | ||
809 | /* Copy the 802.11 header to the skb */ | |
810 | memcpy(skb_put(skb, hdrlen), &(desc->frame_ctl), hdrlen); | |
459a98ed | 811 | skb_reset_mac_header(skb); |
98c4cae1 CH |
812 | |
813 | /* If any, copy the data from the card to the skb */ | |
814 | if (datalen > 0) { | |
b42f2074 DK |
815 | err = hw->ops->bap_pread(hw, IRQ_BAP, skb_put(skb, datalen), |
816 | ALIGN(datalen, 2), rxfid, | |
817 | HERMES_802_2_OFFSET); | |
98c4cae1 CH |
818 | if (err) { |
819 | printk(KERN_ERR "%s: error %d reading monitor frame\n", | |
820 | dev->name, err); | |
821 | goto drop; | |
822 | } | |
823 | } | |
824 | ||
825 | skb->dev = dev; | |
826 | skb->ip_summed = CHECKSUM_NONE; | |
827 | skb->pkt_type = PACKET_OTHERHOST; | |
c1b4aa3f | 828 | skb->protocol = cpu_to_be16(ETH_P_802_2); |
6fe9deb1 | 829 | |
98c4cae1 CH |
830 | stats->rx_packets++; |
831 | stats->rx_bytes += skb->len; | |
832 | ||
833 | netif_rx(skb); | |
834 | return; | |
835 | ||
836 | drop: | |
837 | dev_kfree_skb_irq(skb); | |
838 | update_stats: | |
839 | stats->rx_errors++; | |
840 | stats->rx_dropped++; | |
841 | } | |
842 | ||
9afac70a | 843 | void __orinoco_ev_rx(struct net_device *dev, hermes_t *hw) |
1da177e4 | 844 | { |
ea60a6aa | 845 | struct orinoco_private *priv = ndev_priv(dev); |
1da177e4 LT |
846 | struct net_device_stats *stats = &priv->stats; |
847 | struct iw_statistics *wstats = &priv->wstats; | |
848 | struct sk_buff *skb = NULL; | |
31afcef3 | 849 | u16 rxfid, status; |
8f2abf44 | 850 | int length; |
31afcef3 DK |
851 | struct hermes_rx_descriptor *desc; |
852 | struct orinoco_rx_data *rx_data; | |
1da177e4 LT |
853 | int err; |
854 | ||
31afcef3 DK |
855 | desc = kmalloc(sizeof(*desc), GFP_ATOMIC); |
856 | if (!desc) { | |
857 | printk(KERN_WARNING | |
858 | "%s: Can't allocate space for RX descriptor\n", | |
859 | dev->name); | |
860 | goto update_stats; | |
861 | } | |
862 | ||
1da177e4 LT |
863 | rxfid = hermes_read_regn(hw, RXFID); |
864 | ||
b42f2074 DK |
865 | err = hw->ops->bap_pread(hw, IRQ_BAP, desc, sizeof(*desc), |
866 | rxfid, 0); | |
1da177e4 LT |
867 | if (err) { |
868 | printk(KERN_ERR "%s: error %d reading Rx descriptor. " | |
869 | "Frame dropped.\n", dev->name, err); | |
98c4cae1 | 870 | goto update_stats; |
1da177e4 LT |
871 | } |
872 | ||
31afcef3 | 873 | status = le16_to_cpu(desc->status); |
1da177e4 | 874 | |
98c4cae1 CH |
875 | if (status & HERMES_RXSTAT_BADCRC) { |
876 | DEBUG(1, "%s: Bad CRC on Rx. Frame dropped.\n", | |
877 | dev->name); | |
878 | stats->rx_crc_errors++; | |
879 | goto update_stats; | |
1da177e4 LT |
880 | } |
881 | ||
98c4cae1 | 882 | /* Handle frames in monitor mode */ |
5217c571 | 883 | if (priv->iw_mode == NL80211_IFTYPE_MONITOR) { |
31afcef3 DK |
884 | orinoco_rx_monitor(dev, rxfid, desc); |
885 | goto out; | |
98c4cae1 | 886 | } |
1da177e4 | 887 | |
98c4cae1 CH |
888 | if (status & HERMES_RXSTAT_UNDECRYPTABLE) { |
889 | DEBUG(1, "%s: Undecryptable frame on Rx. Frame dropped.\n", | |
890 | dev->name); | |
891 | wstats->discard.code++; | |
892 | goto update_stats; | |
1da177e4 LT |
893 | } |
894 | ||
31afcef3 | 895 | length = le16_to_cpu(desc->data_len); |
8f2abf44 | 896 | |
1da177e4 LT |
897 | /* Sanity checks */ |
898 | if (length < 3) { /* No for even an 802.2 LLC header */ | |
899 | /* At least on Symbol firmware with PCF we get quite a | |
6fe9deb1 DK |
900 | lot of these legitimately - Poll frames with no |
901 | data. */ | |
31afcef3 | 902 | goto out; |
1da177e4 | 903 | } |
2c706002 | 904 | if (length > IEEE80211_MAX_DATA_LEN) { |
1da177e4 LT |
905 | printk(KERN_WARNING "%s: Oversized frame received (%d bytes)\n", |
906 | dev->name, length); | |
907 | stats->rx_length_errors++; | |
98c4cae1 | 908 | goto update_stats; |
1da177e4 LT |
909 | } |
910 | ||
23edcc41 DK |
911 | /* Payload size does not include Michael MIC. Increase payload |
912 | * size to read it together with the data. */ | |
913 | if (status & HERMES_RXSTAT_MIC) | |
914 | length += MICHAEL_MIC_LEN; | |
915 | ||
1da177e4 LT |
916 | /* We need space for the packet data itself, plus an ethernet |
917 | header, plus 2 bytes so we can align the IP header on a | |
918 | 32bit boundary, plus 1 byte so we can read in odd length | |
919 | packets from the card, which has an IO granularity of 16 | |
6fe9deb1 | 920 | bits */ |
1da177e4 LT |
921 | skb = dev_alloc_skb(length+ETH_HLEN+2+1); |
922 | if (!skb) { | |
923 | printk(KERN_WARNING "%s: Can't allocate skb for Rx\n", | |
924 | dev->name); | |
98c4cae1 | 925 | goto update_stats; |
1da177e4 LT |
926 | } |
927 | ||
8f2abf44 CH |
928 | /* We'll prepend the header, so reserve space for it. The worst |
929 | case is no decapsulation, when 802.3 header is prepended and | |
930 | nothing is removed. 2 is for aligning the IP header. */ | |
931 | skb_reserve(skb, ETH_HLEN + 2); | |
932 | ||
b42f2074 DK |
933 | err = hw->ops->bap_pread(hw, IRQ_BAP, skb_put(skb, length), |
934 | ALIGN(length, 2), rxfid, | |
935 | HERMES_802_2_OFFSET); | |
8f2abf44 CH |
936 | if (err) { |
937 | printk(KERN_ERR "%s: error %d reading frame. " | |
938 | "Frame dropped.\n", dev->name, err); | |
8f2abf44 CH |
939 | goto drop; |
940 | } | |
1da177e4 | 941 | |
31afcef3 DK |
942 | /* Add desc and skb to rx queue */ |
943 | rx_data = kzalloc(sizeof(*rx_data), GFP_ATOMIC); | |
944 | if (!rx_data) { | |
945 | printk(KERN_WARNING "%s: Can't allocate RX packet\n", | |
946 | dev->name); | |
947 | goto drop; | |
948 | } | |
949 | rx_data->desc = desc; | |
950 | rx_data->skb = skb; | |
951 | list_add_tail(&rx_data->list, &priv->rx_list); | |
952 | tasklet_schedule(&priv->rx_tasklet); | |
953 | ||
954 | return; | |
955 | ||
956 | drop: | |
957 | dev_kfree_skb_irq(skb); | |
958 | update_stats: | |
959 | stats->rx_errors++; | |
960 | stats->rx_dropped++; | |
961 | out: | |
962 | kfree(desc); | |
963 | } | |
9afac70a | 964 | EXPORT_SYMBOL(__orinoco_ev_rx); |
31afcef3 DK |
965 | |
966 | static void orinoco_rx(struct net_device *dev, | |
967 | struct hermes_rx_descriptor *desc, | |
968 | struct sk_buff *skb) | |
969 | { | |
ea60a6aa | 970 | struct orinoco_private *priv = ndev_priv(dev); |
31afcef3 DK |
971 | struct net_device_stats *stats = &priv->stats; |
972 | u16 status, fc; | |
973 | int length; | |
974 | struct ethhdr *hdr; | |
975 | ||
976 | status = le16_to_cpu(desc->status); | |
977 | length = le16_to_cpu(desc->data_len); | |
978 | fc = le16_to_cpu(desc->frame_ctl); | |
979 | ||
23edcc41 DK |
980 | /* Calculate and check MIC */ |
981 | if (status & HERMES_RXSTAT_MIC) { | |
4af198fb | 982 | struct orinoco_tkip_key *key; |
23edcc41 DK |
983 | int key_id = ((status & HERMES_RXSTAT_MIC_KEY_ID) >> |
984 | HERMES_MIC_KEY_ID_SHIFT); | |
985 | u8 mic[MICHAEL_MIC_LEN]; | |
986 | u8 *rxmic; | |
987 | u8 *src = (fc & IEEE80211_FCTL_FROMDS) ? | |
988 | desc->addr3 : desc->addr2; | |
989 | ||
990 | /* Extract Michael MIC from payload */ | |
991 | rxmic = skb->data + skb->len - MICHAEL_MIC_LEN; | |
992 | ||
993 | skb_trim(skb, skb->len - MICHAEL_MIC_LEN); | |
994 | length -= MICHAEL_MIC_LEN; | |
995 | ||
4af198fb DK |
996 | key = (struct orinoco_tkip_key *) priv->keys[key_id].key; |
997 | ||
998 | if (!key) { | |
999 | printk(KERN_WARNING "%s: Received encrypted frame from " | |
1000 | "%pM using key %i, but key is not installed\n", | |
1001 | dev->name, src, key_id); | |
1002 | goto drop; | |
1003 | } | |
1004 | ||
1005 | orinoco_mic(priv->rx_tfm_mic, key->rx_mic, desc->addr1, src, | |
23edcc41 | 1006 | 0, /* priority or QoS? */ |
4af198fb | 1007 | skb->data, skb->len, &mic[0]); |
23edcc41 DK |
1008 | |
1009 | if (memcmp(mic, rxmic, | |
1010 | MICHAEL_MIC_LEN)) { | |
1011 | union iwreq_data wrqu; | |
1012 | struct iw_michaelmicfailure wxmic; | |
23edcc41 DK |
1013 | |
1014 | printk(KERN_WARNING "%s: " | |
e174961c | 1015 | "Invalid Michael MIC in data frame from %pM, " |
23edcc41 | 1016 | "using key %i\n", |
e174961c | 1017 | dev->name, src, key_id); |
23edcc41 DK |
1018 | |
1019 | /* TODO: update stats */ | |
1020 | ||
1021 | /* Notify userspace */ | |
1022 | memset(&wxmic, 0, sizeof(wxmic)); | |
1023 | wxmic.flags = key_id & IW_MICFAILURE_KEY_ID; | |
1024 | wxmic.flags |= (desc->addr1[0] & 1) ? | |
1025 | IW_MICFAILURE_GROUP : IW_MICFAILURE_PAIRWISE; | |
1026 | wxmic.src_addr.sa_family = ARPHRD_ETHER; | |
1027 | memcpy(wxmic.src_addr.sa_data, src, ETH_ALEN); | |
1028 | ||
1029 | (void) orinoco_hw_get_tkip_iv(priv, key_id, | |
1030 | &wxmic.tsc[0]); | |
1031 | ||
1032 | memset(&wrqu, 0, sizeof(wrqu)); | |
1033 | wrqu.data.length = sizeof(wxmic); | |
1034 | wireless_send_event(dev, IWEVMICHAELMICFAILURE, &wrqu, | |
1035 | (char *) &wxmic); | |
1036 | ||
1037 | goto drop; | |
1038 | } | |
1039 | } | |
1040 | ||
1da177e4 LT |
1041 | /* Handle decapsulation |
1042 | * In most cases, the firmware tell us about SNAP frames. | |
1043 | * For some reason, the SNAP frames sent by LinkSys APs | |
1044 | * are not properly recognised by most firmwares. | |
1045 | * So, check ourselves */ | |
8f2abf44 CH |
1046 | if (length >= ENCAPS_OVERHEAD && |
1047 | (((status & HERMES_RXSTAT_MSGTYPE) == HERMES_RXSTAT_1042) || | |
1048 | ((status & HERMES_RXSTAT_MSGTYPE) == HERMES_RXSTAT_TUNNEL) || | |
1049 | is_ethersnap(skb->data))) { | |
1da177e4 LT |
1050 | /* These indicate a SNAP within 802.2 LLC within |
1051 | 802.11 frame which we'll need to de-encapsulate to | |
1052 | the original EthernetII frame. */ | |
b2f30a0a DK |
1053 | hdr = (struct ethhdr *)skb_push(skb, |
1054 | ETH_HLEN - ENCAPS_OVERHEAD); | |
1da177e4 | 1055 | } else { |
8f2abf44 CH |
1056 | /* 802.3 frame - prepend 802.3 header as is */ |
1057 | hdr = (struct ethhdr *)skb_push(skb, ETH_HLEN); | |
1058 | hdr->h_proto = htons(length); | |
1da177e4 | 1059 | } |
31afcef3 | 1060 | memcpy(hdr->h_dest, desc->addr1, ETH_ALEN); |
8f2abf44 | 1061 | if (fc & IEEE80211_FCTL_FROMDS) |
31afcef3 | 1062 | memcpy(hdr->h_source, desc->addr3, ETH_ALEN); |
8f2abf44 | 1063 | else |
31afcef3 | 1064 | memcpy(hdr->h_source, desc->addr2, ETH_ALEN); |
1da177e4 | 1065 | |
1da177e4 LT |
1066 | skb->protocol = eth_type_trans(skb, dev); |
1067 | skb->ip_summed = CHECKSUM_NONE; | |
8f2abf44 CH |
1068 | if (fc & IEEE80211_FCTL_TODS) |
1069 | skb->pkt_type = PACKET_OTHERHOST; | |
6fe9deb1 | 1070 | |
1da177e4 | 1071 | /* Process the wireless stats if needed */ |
31afcef3 | 1072 | orinoco_stat_gather(dev, skb, desc); |
1da177e4 LT |
1073 | |
1074 | /* Pass the packet to the networking stack */ | |
1075 | netif_rx(skb); | |
1076 | stats->rx_packets++; | |
1077 | stats->rx_bytes += length; | |
1078 | ||
1079 | return; | |
23edcc41 DK |
1080 | |
1081 | drop: | |
1082 | dev_kfree_skb(skb); | |
1083 | stats->rx_errors++; | |
1084 | stats->rx_dropped++; | |
31afcef3 | 1085 | } |
1da177e4 | 1086 | |
31afcef3 DK |
1087 | static void orinoco_rx_isr_tasklet(unsigned long data) |
1088 | { | |
5381956b DK |
1089 | struct orinoco_private *priv = (struct orinoco_private *) data; |
1090 | struct net_device *dev = priv->ndev; | |
31afcef3 DK |
1091 | struct orinoco_rx_data *rx_data, *temp; |
1092 | struct hermes_rx_descriptor *desc; | |
1093 | struct sk_buff *skb; | |
20953ad6 DK |
1094 | unsigned long flags; |
1095 | ||
1096 | /* orinoco_rx requires the driver lock, and we also need to | |
1097 | * protect priv->rx_list, so just hold the lock over the | |
1098 | * lot. | |
1099 | * | |
1100 | * If orinoco_lock fails, we've unplugged the card. In this | |
1101 | * case just abort. */ | |
1102 | if (orinoco_lock(priv, &flags) != 0) | |
1103 | return; | |
31afcef3 DK |
1104 | |
1105 | /* extract desc and skb from queue */ | |
1106 | list_for_each_entry_safe(rx_data, temp, &priv->rx_list, list) { | |
1107 | desc = rx_data->desc; | |
1108 | skb = rx_data->skb; | |
1109 | list_del(&rx_data->list); | |
1110 | kfree(rx_data); | |
1111 | ||
1112 | orinoco_rx(dev, desc, skb); | |
1113 | ||
1114 | kfree(desc); | |
1115 | } | |
20953ad6 DK |
1116 | |
1117 | orinoco_unlock(priv, &flags); | |
1da177e4 LT |
1118 | } |
1119 | ||
1120 | /********************************************************************/ | |
1121 | /* Rx path (info frames) */ | |
1122 | /********************************************************************/ | |
1123 | ||
1124 | static void print_linkstatus(struct net_device *dev, u16 status) | |
1125 | { | |
2131266d | 1126 | char *s; |
1da177e4 LT |
1127 | |
1128 | if (suppress_linkstatus) | |
1129 | return; | |
1130 | ||
1131 | switch (status) { | |
1132 | case HERMES_LINKSTATUS_NOT_CONNECTED: | |
1133 | s = "Not Connected"; | |
1134 | break; | |
1135 | case HERMES_LINKSTATUS_CONNECTED: | |
1136 | s = "Connected"; | |
1137 | break; | |
1138 | case HERMES_LINKSTATUS_DISCONNECTED: | |
1139 | s = "Disconnected"; | |
1140 | break; | |
1141 | case HERMES_LINKSTATUS_AP_CHANGE: | |
1142 | s = "AP Changed"; | |
1143 | break; | |
1144 | case HERMES_LINKSTATUS_AP_OUT_OF_RANGE: | |
1145 | s = "AP Out of Range"; | |
1146 | break; | |
1147 | case HERMES_LINKSTATUS_AP_IN_RANGE: | |
1148 | s = "AP In Range"; | |
1149 | break; | |
1150 | case HERMES_LINKSTATUS_ASSOC_FAILED: | |
1151 | s = "Association Failed"; | |
1152 | break; | |
1153 | default: | |
1154 | s = "UNKNOWN"; | |
1155 | } | |
6fe9deb1 | 1156 | |
11eaea41 | 1157 | printk(KERN_DEBUG "%s: New link status: %s (%04x)\n", |
1da177e4 LT |
1158 | dev->name, s, status); |
1159 | } | |
1160 | ||
16739b06 | 1161 | /* Search scan results for requested BSSID, join it if found */ |
c4028958 | 1162 | static void orinoco_join_ap(struct work_struct *work) |
16739b06 | 1163 | { |
c4028958 DH |
1164 | struct orinoco_private *priv = |
1165 | container_of(work, struct orinoco_private, join_work); | |
1166 | struct net_device *dev = priv->ndev; | |
16739b06 CH |
1167 | struct hermes *hw = &priv->hw; |
1168 | int err; | |
1169 | unsigned long flags; | |
1170 | struct join_req { | |
1171 | u8 bssid[ETH_ALEN]; | |
d133ae4c | 1172 | __le16 channel; |
ba2d3587 | 1173 | } __packed req; |
16739b06 | 1174 | const int atom_len = offsetof(struct prism2_scan_apinfo, atim); |
c89cc225 | 1175 | struct prism2_scan_apinfo *atom = NULL; |
16739b06 | 1176 | int offset = 4; |
c89cc225 | 1177 | int found = 0; |
16739b06 CH |
1178 | u8 *buf; |
1179 | u16 len; | |
1180 | ||
1181 | /* Allocate buffer for scan results */ | |
1182 | buf = kmalloc(MAX_SCAN_LEN, GFP_KERNEL); | |
a94e8427 | 1183 | if (!buf) |
16739b06 CH |
1184 | return; |
1185 | ||
1186 | if (orinoco_lock(priv, &flags) != 0) | |
f3cb4cc1 | 1187 | goto fail_lock; |
16739b06 CH |
1188 | |
1189 | /* Sanity checks in case user changed something in the meantime */ | |
a94e8427 | 1190 | if (!priv->bssid_fixed) |
16739b06 CH |
1191 | goto out; |
1192 | ||
1193 | if (strlen(priv->desired_essid) == 0) | |
1194 | goto out; | |
1195 | ||
1196 | /* Read scan results from the firmware */ | |
b42f2074 DK |
1197 | err = hw->ops->read_ltv(hw, USER_BAP, |
1198 | HERMES_RID_SCANRESULTSTABLE, | |
1199 | MAX_SCAN_LEN, &len, buf); | |
16739b06 CH |
1200 | if (err) { |
1201 | printk(KERN_ERR "%s: Cannot read scan results\n", | |
1202 | dev->name); | |
1203 | goto out; | |
1204 | } | |
1205 | ||
1206 | len = HERMES_RECLEN_TO_BYTES(len); | |
1207 | ||
1208 | /* Go through the scan results looking for the channel of the AP | |
1209 | * we were requested to join */ | |
1210 | for (; offset + atom_len <= len; offset += atom_len) { | |
1211 | atom = (struct prism2_scan_apinfo *) (buf + offset); | |
c89cc225 PR |
1212 | if (memcmp(&atom->bssid, priv->desired_bssid, ETH_ALEN) == 0) { |
1213 | found = 1; | |
1214 | break; | |
1215 | } | |
16739b06 CH |
1216 | } |
1217 | ||
a94e8427 | 1218 | if (!found) { |
c89cc225 PR |
1219 | DEBUG(1, "%s: Requested AP not found in scan results\n", |
1220 | dev->name); | |
1221 | goto out; | |
1222 | } | |
16739b06 | 1223 | |
16739b06 CH |
1224 | memcpy(req.bssid, priv->desired_bssid, ETH_ALEN); |
1225 | req.channel = atom->channel; /* both are little-endian */ | |
1226 | err = HERMES_WRITE_RECORD(hw, USER_BAP, HERMES_RID_CNFJOINREQUEST, | |
1227 | &req); | |
1228 | if (err) | |
1229 | printk(KERN_ERR "%s: Error issuing join request\n", dev->name); | |
1230 | ||
1231 | out: | |
16739b06 | 1232 | orinoco_unlock(priv, &flags); |
f3cb4cc1 PR |
1233 | |
1234 | fail_lock: | |
1235 | kfree(buf); | |
16739b06 CH |
1236 | } |
1237 | ||
95dd91fb | 1238 | /* Send new BSSID to userspace */ |
6cd90b1c | 1239 | static void orinoco_send_bssid_wevent(struct orinoco_private *priv) |
95dd91fb | 1240 | { |
c4028958 | 1241 | struct net_device *dev = priv->ndev; |
95dd91fb CH |
1242 | struct hermes *hw = &priv->hw; |
1243 | union iwreq_data wrqu; | |
1244 | int err; | |
95dd91fb | 1245 | |
b42f2074 DK |
1246 | err = hw->ops->read_ltv(hw, USER_BAP, HERMES_RID_CURRENTBSSID, |
1247 | ETH_ALEN, NULL, wrqu.ap_addr.sa_data); | |
95dd91fb | 1248 | if (err != 0) |
6cd90b1c | 1249 | return; |
95dd91fb CH |
1250 | |
1251 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; | |
1252 | ||
1253 | /* Send event to user space */ | |
1254 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); | |
6cd90b1c DK |
1255 | } |
1256 | ||
06009fda DK |
1257 | static void orinoco_send_assocreqie_wevent(struct orinoco_private *priv) |
1258 | { | |
1259 | struct net_device *dev = priv->ndev; | |
1260 | struct hermes *hw = &priv->hw; | |
1261 | union iwreq_data wrqu; | |
1262 | int err; | |
1263 | u8 buf[88]; | |
1264 | u8 *ie; | |
1265 | ||
1266 | if (!priv->has_wpa) | |
1267 | return; | |
1268 | ||
b42f2074 DK |
1269 | err = hw->ops->read_ltv(hw, USER_BAP, HERMES_RID_CURRENT_ASSOC_REQ_INFO, |
1270 | sizeof(buf), NULL, &buf); | |
06009fda DK |
1271 | if (err != 0) |
1272 | return; | |
1273 | ||
1274 | ie = orinoco_get_wpa_ie(buf, sizeof(buf)); | |
1275 | if (ie) { | |
1276 | int rem = sizeof(buf) - (ie - &buf[0]); | |
1277 | wrqu.data.length = ie[1] + 2; | |
1278 | if (wrqu.data.length > rem) | |
1279 | wrqu.data.length = rem; | |
1280 | ||
1281 | if (wrqu.data.length) | |
1282 | /* Send event to user space */ | |
1283 | wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, ie); | |
1284 | } | |
1285 | } | |
1286 | ||
1287 | static void orinoco_send_assocrespie_wevent(struct orinoco_private *priv) | |
1288 | { | |
1289 | struct net_device *dev = priv->ndev; | |
1290 | struct hermes *hw = &priv->hw; | |
1291 | union iwreq_data wrqu; | |
1292 | int err; | |
1293 | u8 buf[88]; /* TODO: verify max size or IW_GENERIC_IE_MAX */ | |
1294 | u8 *ie; | |
1295 | ||
1296 | if (!priv->has_wpa) | |
1297 | return; | |
1298 | ||
b42f2074 DK |
1299 | err = hw->ops->read_ltv(hw, USER_BAP, |
1300 | HERMES_RID_CURRENT_ASSOC_RESP_INFO, | |
1301 | sizeof(buf), NULL, &buf); | |
06009fda DK |
1302 | if (err != 0) |
1303 | return; | |
1304 | ||
1305 | ie = orinoco_get_wpa_ie(buf, sizeof(buf)); | |
1306 | if (ie) { | |
1307 | int rem = sizeof(buf) - (ie - &buf[0]); | |
1308 | wrqu.data.length = ie[1] + 2; | |
1309 | if (wrqu.data.length > rem) | |
1310 | wrqu.data.length = rem; | |
1311 | ||
1312 | if (wrqu.data.length) | |
1313 | /* Send event to user space */ | |
1314 | wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, ie); | |
1315 | } | |
1316 | } | |
1317 | ||
6cd90b1c DK |
1318 | static void orinoco_send_wevents(struct work_struct *work) |
1319 | { | |
1320 | struct orinoco_private *priv = | |
1321 | container_of(work, struct orinoco_private, wevent_work); | |
1322 | unsigned long flags; | |
1323 | ||
1324 | if (orinoco_lock(priv, &flags) != 0) | |
1325 | return; | |
1326 | ||
06009fda DK |
1327 | orinoco_send_assocreqie_wevent(priv); |
1328 | orinoco_send_assocrespie_wevent(priv); | |
6cd90b1c | 1329 | orinoco_send_bssid_wevent(priv); |
8aeabc37 | 1330 | |
95dd91fb CH |
1331 | orinoco_unlock(priv, &flags); |
1332 | } | |
1333 | ||
c63cdbe8 DK |
1334 | static void qbuf_scan(struct orinoco_private *priv, void *buf, |
1335 | int len, int type) | |
1336 | { | |
1337 | struct orinoco_scan_data *sd; | |
1338 | unsigned long flags; | |
1339 | ||
1340 | sd = kmalloc(sizeof(*sd), GFP_ATOMIC); | |
1341 | sd->buf = buf; | |
1342 | sd->len = len; | |
1343 | sd->type = type; | |
1344 | ||
1345 | spin_lock_irqsave(&priv->scan_lock, flags); | |
1346 | list_add_tail(&sd->list, &priv->scan_list); | |
1347 | spin_unlock_irqrestore(&priv->scan_lock, flags); | |
1348 | ||
1349 | schedule_work(&priv->process_scan); | |
1350 | } | |
1351 | ||
1352 | static void qabort_scan(struct orinoco_private *priv) | |
1353 | { | |
1354 | struct orinoco_scan_data *sd; | |
1355 | unsigned long flags; | |
1356 | ||
1357 | sd = kmalloc(sizeof(*sd), GFP_ATOMIC); | |
1358 | sd->len = -1; /* Abort */ | |
1359 | ||
1360 | spin_lock_irqsave(&priv->scan_lock, flags); | |
1361 | list_add_tail(&sd->list, &priv->scan_list); | |
1362 | spin_unlock_irqrestore(&priv->scan_lock, flags); | |
1363 | ||
1364 | schedule_work(&priv->process_scan); | |
1365 | } | |
1366 | ||
1367 | static void orinoco_process_scan_results(struct work_struct *work) | |
1368 | { | |
1369 | struct orinoco_private *priv = | |
1370 | container_of(work, struct orinoco_private, process_scan); | |
1371 | struct orinoco_scan_data *sd, *temp; | |
1372 | unsigned long flags; | |
1373 | void *buf; | |
1374 | int len; | |
1375 | int type; | |
1376 | ||
1377 | spin_lock_irqsave(&priv->scan_lock, flags); | |
1378 | list_for_each_entry_safe(sd, temp, &priv->scan_list, list) { | |
c63cdbe8 DK |
1379 | |
1380 | buf = sd->buf; | |
1381 | len = sd->len; | |
1382 | type = sd->type; | |
1383 | ||
1384 | list_del(&sd->list); | |
3bf184a7 | 1385 | spin_unlock_irqrestore(&priv->scan_lock, flags); |
c63cdbe8 DK |
1386 | kfree(sd); |
1387 | ||
1388 | if (len > 0) { | |
1389 | if (type == HERMES_INQ_CHANNELINFO) | |
1390 | orinoco_add_extscan_result(priv, buf, len); | |
1391 | else | |
1392 | orinoco_add_hostscan_results(priv, buf, len); | |
1393 | ||
1394 | kfree(buf); | |
cf63495d | 1395 | } else { |
c63cdbe8 | 1396 | /* Either abort or complete the scan */ |
cf63495d | 1397 | orinoco_scan_done(priv, (len < 0)); |
c63cdbe8 DK |
1398 | } |
1399 | ||
1400 | spin_lock_irqsave(&priv->scan_lock, flags); | |
1401 | } | |
1402 | spin_unlock_irqrestore(&priv->scan_lock, flags); | |
1403 | } | |
1404 | ||
9afac70a | 1405 | void __orinoco_ev_info(struct net_device *dev, hermes_t *hw) |
1da177e4 | 1406 | { |
ea60a6aa | 1407 | struct orinoco_private *priv = ndev_priv(dev); |
1da177e4 LT |
1408 | u16 infofid; |
1409 | struct { | |
d133ae4c PR |
1410 | __le16 len; |
1411 | __le16 type; | |
ba2d3587 | 1412 | } __packed info; |
1da177e4 LT |
1413 | int len, type; |
1414 | int err; | |
1415 | ||
1416 | /* This is an answer to an INQUIRE command that we did earlier, | |
1417 | * or an information "event" generated by the card | |
1418 | * The controller return to us a pseudo frame containing | |
1419 | * the information in question - Jean II */ | |
1420 | infofid = hermes_read_regn(hw, INFOFID); | |
1421 | ||
1422 | /* Read the info frame header - don't try too hard */ | |
b42f2074 DK |
1423 | err = hw->ops->bap_pread(hw, IRQ_BAP, &info, sizeof(info), |
1424 | infofid, 0); | |
1da177e4 LT |
1425 | if (err) { |
1426 | printk(KERN_ERR "%s: error %d reading info frame. " | |
1427 | "Frame dropped.\n", dev->name, err); | |
1428 | return; | |
1429 | } | |
6fe9deb1 | 1430 | |
1da177e4 LT |
1431 | len = HERMES_RECLEN_TO_BYTES(le16_to_cpu(info.len)); |
1432 | type = le16_to_cpu(info.type); | |
1433 | ||
1434 | switch (type) { | |
1435 | case HERMES_INQ_TALLIES: { | |
1436 | struct hermes_tallies_frame tallies; | |
1437 | struct iw_statistics *wstats = &priv->wstats; | |
6fe9deb1 | 1438 | |
1da177e4 LT |
1439 | if (len > sizeof(tallies)) { |
1440 | printk(KERN_WARNING "%s: Tallies frame too long (%d bytes)\n", | |
1441 | dev->name, len); | |
1442 | len = sizeof(tallies); | |
1443 | } | |
6fe9deb1 | 1444 | |
b42f2074 DK |
1445 | err = hw->ops->bap_pread(hw, IRQ_BAP, &tallies, len, |
1446 | infofid, sizeof(info)); | |
84d8a2fb CH |
1447 | if (err) |
1448 | break; | |
6fe9deb1 | 1449 | |
1da177e4 LT |
1450 | /* Increment our various counters */ |
1451 | /* wstats->discard.nwid - no wrong BSSID stuff */ | |
1452 | wstats->discard.code += | |
1453 | le16_to_cpu(tallies.RxWEPUndecryptable); | |
6fe9deb1 | 1454 | if (len == sizeof(tallies)) |
1da177e4 LT |
1455 | wstats->discard.code += |
1456 | le16_to_cpu(tallies.RxDiscards_WEPICVError) + | |
1457 | le16_to_cpu(tallies.RxDiscards_WEPExcluded); | |
1458 | wstats->discard.misc += | |
1459 | le16_to_cpu(tallies.TxDiscardsWrongSA); | |
1460 | wstats->discard.fragment += | |
1461 | le16_to_cpu(tallies.RxMsgInBadMsgFragments); | |
1462 | wstats->discard.retries += | |
1463 | le16_to_cpu(tallies.TxRetryLimitExceeded); | |
1464 | /* wstats->miss.beacon - no match */ | |
1465 | } | |
1466 | break; | |
1467 | case HERMES_INQ_LINKSTATUS: { | |
1468 | struct hermes_linkstatus linkstatus; | |
1469 | u16 newstatus; | |
1470 | int connected; | |
1471 | ||
5217c571 | 1472 | if (priv->iw_mode == NL80211_IFTYPE_MONITOR) |
8f2abf44 CH |
1473 | break; |
1474 | ||
1da177e4 LT |
1475 | if (len != sizeof(linkstatus)) { |
1476 | printk(KERN_WARNING "%s: Unexpected size for linkstatus frame (%d bytes)\n", | |
1477 | dev->name, len); | |
1478 | break; | |
1479 | } | |
1480 | ||
b42f2074 DK |
1481 | err = hw->ops->bap_pread(hw, IRQ_BAP, &linkstatus, len, |
1482 | infofid, sizeof(info)); | |
84d8a2fb CH |
1483 | if (err) |
1484 | break; | |
1da177e4 LT |
1485 | newstatus = le16_to_cpu(linkstatus.linkstatus); |
1486 | ||
95dd91fb CH |
1487 | /* Symbol firmware uses "out of range" to signal that |
1488 | * the hostscan frame can be requested. */ | |
1489 | if (newstatus == HERMES_LINKSTATUS_AP_OUT_OF_RANGE && | |
1490 | priv->firmware_type == FIRMWARE_TYPE_SYMBOL && | |
c63cdbe8 | 1491 | priv->has_hostscan && priv->scan_request) { |
95dd91fb CH |
1492 | hermes_inquire(hw, HERMES_INQ_HOSTSCAN_SYMBOL); |
1493 | break; | |
1494 | } | |
1495 | ||
1da177e4 LT |
1496 | connected = (newstatus == HERMES_LINKSTATUS_CONNECTED) |
1497 | || (newstatus == HERMES_LINKSTATUS_AP_CHANGE) | |
1498 | || (newstatus == HERMES_LINKSTATUS_AP_IN_RANGE); | |
1499 | ||
1500 | if (connected) | |
1501 | netif_carrier_on(dev); | |
7bb7c3a3 | 1502 | else if (!ignore_disconnect) |
1da177e4 LT |
1503 | netif_carrier_off(dev); |
1504 | ||
95dd91fb CH |
1505 | if (newstatus != priv->last_linkstatus) { |
1506 | priv->last_linkstatus = newstatus; | |
1da177e4 | 1507 | print_linkstatus(dev, newstatus); |
95dd91fb CH |
1508 | /* The info frame contains only one word which is the |
1509 | * status (see hermes.h). The status is pretty boring | |
1510 | * in itself, that's why we export the new BSSID... | |
1511 | * Jean II */ | |
1512 | schedule_work(&priv->wevent_work); | |
1513 | } | |
1514 | } | |
1515 | break; | |
1516 | case HERMES_INQ_SCAN: | |
c63cdbe8 | 1517 | if (!priv->scan_request && priv->bssid_fixed && |
95dd91fb CH |
1518 | priv->firmware_type == FIRMWARE_TYPE_INTERSIL) { |
1519 | schedule_work(&priv->join_work); | |
1520 | break; | |
1521 | } | |
1522 | /* fall through */ | |
1523 | case HERMES_INQ_HOSTSCAN: | |
1524 | case HERMES_INQ_HOSTSCAN_SYMBOL: { | |
1525 | /* Result of a scanning. Contains information about | |
1526 | * cells in the vicinity - Jean II */ | |
95dd91fb CH |
1527 | unsigned char *buf; |
1528 | ||
1529 | /* Sanity check */ | |
1530 | if (len > 4096) { | |
1531 | printk(KERN_WARNING "%s: Scan results too large (%d bytes)\n", | |
1532 | dev->name, len); | |
c63cdbe8 | 1533 | qabort_scan(priv); |
95dd91fb CH |
1534 | break; |
1535 | } | |
1536 | ||
95dd91fb CH |
1537 | /* Allocate buffer for results */ |
1538 | buf = kmalloc(len, GFP_ATOMIC); | |
c63cdbe8 | 1539 | if (buf == NULL) { |
95dd91fb | 1540 | /* No memory, so can't printk()... */ |
c63cdbe8 | 1541 | qabort_scan(priv); |
95dd91fb | 1542 | break; |
c63cdbe8 | 1543 | } |
95dd91fb CH |
1544 | |
1545 | /* Read scan data */ | |
b42f2074 DK |
1546 | err = hw->ops->bap_pread(hw, IRQ_BAP, (void *) buf, len, |
1547 | infofid, sizeof(info)); | |
708218b0 PR |
1548 | if (err) { |
1549 | kfree(buf); | |
c63cdbe8 | 1550 | qabort_scan(priv); |
95dd91fb | 1551 | break; |
708218b0 | 1552 | } |
1da177e4 | 1553 | |
95dd91fb CH |
1554 | #ifdef ORINOCO_DEBUG |
1555 | { | |
1556 | int i; | |
1557 | printk(KERN_DEBUG "Scan result [%02X", buf[0]); | |
a94e8427 | 1558 | for (i = 1; i < (len * 2); i++) |
95dd91fb CH |
1559 | printk(":%02X", buf[i]); |
1560 | printk("]\n"); | |
1561 | } | |
1562 | #endif /* ORINOCO_DEBUG */ | |
1563 | ||
c63cdbe8 | 1564 | qbuf_scan(priv, buf, len, type); |
1da177e4 LT |
1565 | } |
1566 | break; | |
01632fa4 DK |
1567 | case HERMES_INQ_CHANNELINFO: |
1568 | { | |
1569 | struct agere_ext_scan_info *bss; | |
1570 | ||
c63cdbe8 | 1571 | if (!priv->scan_request) { |
01632fa4 DK |
1572 | printk(KERN_DEBUG "%s: Got chaninfo without scan, " |
1573 | "len=%d\n", dev->name, len); | |
1574 | break; | |
1575 | } | |
1576 | ||
1577 | /* An empty result indicates that the scan is complete */ | |
1578 | if (len == 0) { | |
c63cdbe8 | 1579 | qbuf_scan(priv, NULL, len, type); |
01632fa4 DK |
1580 | break; |
1581 | } | |
1582 | ||
1583 | /* Sanity check */ | |
c63cdbe8 | 1584 | else if (len < (offsetof(struct agere_ext_scan_info, |
01632fa4 DK |
1585 | data) + 2)) { |
1586 | /* Drop this result now so we don't have to | |
1587 | * keep checking later */ | |
1588 | printk(KERN_WARNING | |
1589 | "%s: Ext scan results too short (%d bytes)\n", | |
1590 | dev->name, len); | |
1591 | break; | |
1592 | } | |
1593 | ||
c63cdbe8 | 1594 | bss = kmalloc(len, GFP_ATOMIC); |
01632fa4 DK |
1595 | if (bss == NULL) |
1596 | break; | |
1597 | ||
1598 | /* Read scan data */ | |
b42f2074 DK |
1599 | err = hw->ops->bap_pread(hw, IRQ_BAP, (void *) bss, len, |
1600 | infofid, sizeof(info)); | |
c63cdbe8 | 1601 | if (err) |
01632fa4 | 1602 | kfree(bss); |
c63cdbe8 DK |
1603 | else |
1604 | qbuf_scan(priv, bss, len, type); | |
01632fa4 | 1605 | |
01632fa4 DK |
1606 | break; |
1607 | } | |
95dd91fb CH |
1608 | case HERMES_INQ_SEC_STAT_AGERE: |
1609 | /* Security status (Agere specific) */ | |
1610 | /* Ignore this frame for now */ | |
1611 | if (priv->firmware_type == FIRMWARE_TYPE_AGERE) | |
1612 | break; | |
1613 | /* fall through */ | |
1da177e4 LT |
1614 | default: |
1615 | printk(KERN_DEBUG "%s: Unknown information frame received: " | |
1616 | "type 0x%04x, length %d\n", dev->name, type, len); | |
1617 | /* We don't actually do anything about it */ | |
1618 | break; | |
1619 | } | |
1620 | } | |
9afac70a | 1621 | EXPORT_SYMBOL(__orinoco_ev_info); |
1da177e4 LT |
1622 | |
1623 | static void __orinoco_ev_infdrop(struct net_device *dev, hermes_t *hw) | |
1624 | { | |
1625 | if (net_ratelimit()) | |
1626 | printk(KERN_DEBUG "%s: Information frame lost.\n", dev->name); | |
1627 | } | |
1628 | ||
1629 | /********************************************************************/ | |
1630 | /* Internal hardware control routines */ | |
1631 | /********************************************************************/ | |
1632 | ||
6415f7df | 1633 | static int __orinoco_up(struct orinoco_private *priv) |
1da177e4 | 1634 | { |
a2608362 | 1635 | struct net_device *dev = priv->ndev; |
1da177e4 LT |
1636 | struct hermes *hw = &priv->hw; |
1637 | int err; | |
1638 | ||
84d8a2fb CH |
1639 | netif_carrier_off(dev); /* just to make sure */ |
1640 | ||
721aa2f7 | 1641 | err = __orinoco_commit(priv); |
1da177e4 LT |
1642 | if (err) { |
1643 | printk(KERN_ERR "%s: Error %d configuring card\n", | |
1644 | dev->name, err); | |
1645 | return err; | |
1646 | } | |
1647 | ||
1648 | /* Fire things up again */ | |
1649 | hermes_set_irqmask(hw, ORINOCO_INTEN); | |
1650 | err = hermes_enable_port(hw, 0); | |
1651 | if (err) { | |
1652 | printk(KERN_ERR "%s: Error %d enabling MAC port\n", | |
1653 | dev->name, err); | |
1654 | return err; | |
1655 | } | |
1656 | ||
1657 | netif_start_queue(dev); | |
1658 | ||
1659 | return 0; | |
1660 | } | |
1661 | ||
6415f7df | 1662 | static int __orinoco_down(struct orinoco_private *priv) |
1da177e4 | 1663 | { |
a2608362 | 1664 | struct net_device *dev = priv->ndev; |
1da177e4 LT |
1665 | struct hermes *hw = &priv->hw; |
1666 | int err; | |
1667 | ||
1668 | netif_stop_queue(dev); | |
1669 | ||
a94e8427 DK |
1670 | if (!priv->hw_unavailable) { |
1671 | if (!priv->broken_disableport) { | |
1da177e4 LT |
1672 | err = hermes_disable_port(hw, 0); |
1673 | if (err) { | |
1674 | /* Some firmwares (e.g. Intersil 1.3.x) seem | |
1675 | * to have problems disabling the port, oh | |
1676 | * well, too bad. */ | |
1677 | printk(KERN_WARNING "%s: Error %d disabling MAC port\n", | |
1678 | dev->name, err); | |
1679 | priv->broken_disableport = 1; | |
1680 | } | |
1681 | } | |
1682 | hermes_set_irqmask(hw, 0); | |
1683 | hermes_write_regn(hw, EVACK, 0xffff); | |
1684 | } | |
6fe9deb1 | 1685 | |
cf63495d DK |
1686 | orinoco_scan_done(priv, true); |
1687 | ||
1da177e4 LT |
1688 | /* firmware will have to reassociate */ |
1689 | netif_carrier_off(dev); | |
1690 | priv->last_linkstatus = 0xffff; | |
1691 | ||
1692 | return 0; | |
1693 | } | |
1694 | ||
6415f7df | 1695 | static int orinoco_reinit_firmware(struct orinoco_private *priv) |
37a6c611 | 1696 | { |
37a6c611 PR |
1697 | struct hermes *hw = &priv->hw; |
1698 | int err; | |
1699 | ||
b42f2074 | 1700 | err = hw->ops->init(hw); |
0df6cbb7 AB |
1701 | if (priv->do_fw_download && !err) { |
1702 | err = orinoco_download(priv); | |
1703 | if (err) | |
1704 | priv->do_fw_download = 0; | |
1705 | } | |
37a6c611 | 1706 | if (!err) |
42a51b93 | 1707 | err = orinoco_hw_allocate_fid(priv); |
37a6c611 PR |
1708 | |
1709 | return err; | |
1710 | } | |
1711 | ||
721aa2f7 | 1712 | static int |
5865d015 DK |
1713 | __orinoco_set_multicast_list(struct net_device *dev) |
1714 | { | |
ea60a6aa | 1715 | struct orinoco_private *priv = ndev_priv(dev); |
5865d015 DK |
1716 | int err = 0; |
1717 | int promisc, mc_count; | |
1718 | ||
1719 | /* The Hermes doesn't seem to have an allmulti mode, so we go | |
1720 | * into promiscuous mode and let the upper levels deal. */ | |
1721 | if ((dev->flags & IFF_PROMISC) || (dev->flags & IFF_ALLMULTI) || | |
4cd24eaf | 1722 | (netdev_mc_count(dev) > MAX_MULTICAST(priv))) { |
5865d015 DK |
1723 | promisc = 1; |
1724 | mc_count = 0; | |
1725 | } else { | |
1726 | promisc = 0; | |
4cd24eaf | 1727 | mc_count = netdev_mc_count(dev); |
5865d015 DK |
1728 | } |
1729 | ||
655ffee2 | 1730 | err = __orinoco_hw_set_multicast_list(priv, dev, mc_count, promisc); |
721aa2f7 DK |
1731 | |
1732 | return err; | |
1da177e4 LT |
1733 | } |
1734 | ||
1da177e4 LT |
1735 | /* This must be called from user context, without locks held - use |
1736 | * schedule_work() */ | |
cb1576a8 | 1737 | void orinoco_reset(struct work_struct *work) |
1da177e4 | 1738 | { |
c4028958 DH |
1739 | struct orinoco_private *priv = |
1740 | container_of(work, struct orinoco_private, reset_work); | |
1741 | struct net_device *dev = priv->ndev; | |
1da177e4 | 1742 | struct hermes *hw = &priv->hw; |
8551cb98 | 1743 | int err; |
1da177e4 LT |
1744 | unsigned long flags; |
1745 | ||
1746 | if (orinoco_lock(priv, &flags) != 0) | |
1747 | /* When the hardware becomes available again, whatever | |
1748 | * detects that is responsible for re-initializing | |
1749 | * it. So no need for anything further */ | |
1750 | return; | |
1751 | ||
1752 | netif_stop_queue(dev); | |
1753 | ||
1754 | /* Shut off interrupts. Depending on what state the hardware | |
1755 | * is in, this might not work, but we'll try anyway */ | |
1756 | hermes_set_irqmask(hw, 0); | |
1757 | hermes_write_regn(hw, EVACK, 0xffff); | |
1758 | ||
1759 | priv->hw_unavailable++; | |
1760 | priv->last_linkstatus = 0xffff; /* firmware will have to reassociate */ | |
1761 | netif_carrier_off(dev); | |
1762 | ||
1763 | orinoco_unlock(priv, &flags); | |
1764 | ||
c63cdbe8 | 1765 | /* Scanning support: Notify scan cancellation */ |
cf63495d | 1766 | orinoco_scan_done(priv, true); |
95dd91fb | 1767 | |
8551cb98 | 1768 | if (priv->hard_reset) { |
1da177e4 | 1769 | err = (*priv->hard_reset)(priv); |
8551cb98 CH |
1770 | if (err) { |
1771 | printk(KERN_ERR "%s: orinoco_reset: Error %d " | |
1772 | "performing hard reset\n", dev->name, err); | |
1773 | goto disable; | |
1774 | } | |
1da177e4 LT |
1775 | } |
1776 | ||
a2608362 | 1777 | err = orinoco_reinit_firmware(priv); |
1da177e4 LT |
1778 | if (err) { |
1779 | printk(KERN_ERR "%s: orinoco_reset: Error %d re-initializing firmware\n", | |
1780 | dev->name, err); | |
8551cb98 | 1781 | goto disable; |
1da177e4 LT |
1782 | } |
1783 | ||
b2f30a0a | 1784 | /* This has to be called from user context */ |
bcad6e80 | 1785 | orinoco_lock_irq(priv); |
1da177e4 LT |
1786 | |
1787 | priv->hw_unavailable--; | |
1788 | ||
1789 | /* priv->open or priv->hw_unavailable might have changed while | |
1790 | * we dropped the lock */ | |
a94e8427 | 1791 | if (priv->open && (!priv->hw_unavailable)) { |
a2608362 | 1792 | err = __orinoco_up(priv); |
1da177e4 LT |
1793 | if (err) { |
1794 | printk(KERN_ERR "%s: orinoco_reset: Error %d reenabling card\n", | |
1795 | dev->name, err); | |
1796 | } else | |
1797 | dev->trans_start = jiffies; | |
1798 | } | |
1799 | ||
bcad6e80 | 1800 | orinoco_unlock_irq(priv); |
1da177e4 LT |
1801 | |
1802 | return; | |
8551cb98 CH |
1803 | disable: |
1804 | hermes_set_irqmask(hw, 0); | |
1805 | netif_device_detach(dev); | |
1806 | printk(KERN_ERR "%s: Device has been disabled!\n", dev->name); | |
1da177e4 LT |
1807 | } |
1808 | ||
721aa2f7 DK |
1809 | static int __orinoco_commit(struct orinoco_private *priv) |
1810 | { | |
1811 | struct net_device *dev = priv->ndev; | |
1812 | int err = 0; | |
1813 | ||
ba34fcee DK |
1814 | /* If we've called commit, we are reconfiguring or bringing the |
1815 | * interface up. Maintaining countermeasures across this would | |
1816 | * be confusing, so note that we've disabled them. The port will | |
1817 | * be enabled later in orinoco_commit or __orinoco_up. */ | |
1818 | priv->tkip_cm_active = 0; | |
1819 | ||
721aa2f7 DK |
1820 | err = orinoco_hw_program_rids(priv); |
1821 | ||
1822 | /* FIXME: what about netif_tx_lock */ | |
1823 | (void) __orinoco_set_multicast_list(dev); | |
1824 | ||
1825 | return err; | |
1826 | } | |
1827 | ||
1828 | /* Ensures configuration changes are applied. May result in a reset. | |
1829 | * The caller should hold priv->lock | |
1830 | */ | |
1831 | int orinoco_commit(struct orinoco_private *priv) | |
1832 | { | |
1833 | struct net_device *dev = priv->ndev; | |
1834 | hermes_t *hw = &priv->hw; | |
1835 | int err; | |
1836 | ||
1837 | if (priv->broken_disableport) { | |
1838 | schedule_work(&priv->reset_work); | |
1839 | return 0; | |
1840 | } | |
1841 | ||
1842 | err = hermes_disable_port(hw, 0); | |
1843 | if (err) { | |
1844 | printk(KERN_WARNING "%s: Unable to disable port " | |
1845 | "while reconfiguring card\n", dev->name); | |
1846 | priv->broken_disableport = 1; | |
1847 | goto out; | |
1848 | } | |
1849 | ||
1850 | err = __orinoco_commit(priv); | |
1851 | if (err) { | |
1852 | printk(KERN_WARNING "%s: Unable to reconfigure card\n", | |
1853 | dev->name); | |
1854 | goto out; | |
1855 | } | |
1856 | ||
1857 | err = hermes_enable_port(hw, 0); | |
1858 | if (err) { | |
1859 | printk(KERN_WARNING "%s: Unable to enable port while reconfiguring card\n", | |
1860 | dev->name); | |
1861 | goto out; | |
1862 | } | |
1863 | ||
1864 | out: | |
1865 | if (err) { | |
1866 | printk(KERN_WARNING "%s: Resetting instead...\n", dev->name); | |
1867 | schedule_work(&priv->reset_work); | |
1868 | err = 0; | |
1869 | } | |
1870 | return err; | |
1871 | } | |
1872 | ||
1da177e4 LT |
1873 | /********************************************************************/ |
1874 | /* Interrupt handler */ | |
1875 | /********************************************************************/ | |
1876 | ||
1877 | static void __orinoco_ev_tick(struct net_device *dev, hermes_t *hw) | |
1878 | { | |
1879 | printk(KERN_DEBUG "%s: TICK\n", dev->name); | |
1880 | } | |
1881 | ||
1882 | static void __orinoco_ev_wterr(struct net_device *dev, hermes_t *hw) | |
1883 | { | |
1884 | /* This seems to happen a fair bit under load, but ignoring it | |
1885 | seems to work fine...*/ | |
1886 | printk(KERN_DEBUG "%s: MAC controller error (WTERR). Ignoring.\n", | |
1887 | dev->name); | |
1888 | } | |
1889 | ||
7d12e780 | 1890 | irqreturn_t orinoco_interrupt(int irq, void *dev_id) |
1da177e4 | 1891 | { |
a2608362 DK |
1892 | struct orinoco_private *priv = dev_id; |
1893 | struct net_device *dev = priv->ndev; | |
1da177e4 LT |
1894 | hermes_t *hw = &priv->hw; |
1895 | int count = MAX_IRQLOOPS_PER_IRQ; | |
1896 | u16 evstat, events; | |
2131266d DK |
1897 | /* These are used to detect a runaway interrupt situation. |
1898 | * | |
1899 | * If we get more than MAX_IRQLOOPS_PER_JIFFY iterations in a jiffy, | |
1900 | * we panic and shut down the hardware | |
1901 | */ | |
1902 | /* jiffies value the last time we were called */ | |
1903 | static int last_irq_jiffy; /* = 0 */ | |
1904 | static int loops_this_jiffy; /* = 0 */ | |
1da177e4 LT |
1905 | unsigned long flags; |
1906 | ||
1907 | if (orinoco_lock(priv, &flags) != 0) { | |
1908 | /* If hw is unavailable - we don't know if the irq was | |
1909 | * for us or not */ | |
1910 | return IRQ_HANDLED; | |
1911 | } | |
1912 | ||
1913 | evstat = hermes_read_regn(hw, EVSTAT); | |
1914 | events = evstat & hw->inten; | |
a94e8427 | 1915 | if (!events) { |
1da177e4 LT |
1916 | orinoco_unlock(priv, &flags); |
1917 | return IRQ_NONE; | |
1918 | } | |
6fe9deb1 | 1919 | |
1da177e4 LT |
1920 | if (jiffies != last_irq_jiffy) |
1921 | loops_this_jiffy = 0; | |
1922 | last_irq_jiffy = jiffies; | |
1923 | ||
1924 | while (events && count--) { | |
1925 | if (++loops_this_jiffy > MAX_IRQLOOPS_PER_JIFFY) { | |
1926 | printk(KERN_WARNING "%s: IRQ handler is looping too " | |
1927 | "much! Resetting.\n", dev->name); | |
1928 | /* Disable interrupts for now */ | |
1929 | hermes_set_irqmask(hw, 0); | |
1930 | schedule_work(&priv->reset_work); | |
1931 | break; | |
1932 | } | |
1933 | ||
1934 | /* Check the card hasn't been removed */ | |
a94e8427 | 1935 | if (!hermes_present(hw)) { |
1da177e4 LT |
1936 | DEBUG(0, "orinoco_interrupt(): card removed\n"); |
1937 | break; | |
1938 | } | |
1939 | ||
1940 | if (events & HERMES_EV_TICK) | |
1941 | __orinoco_ev_tick(dev, hw); | |
1942 | if (events & HERMES_EV_WTERR) | |
1943 | __orinoco_ev_wterr(dev, hw); | |
1944 | if (events & HERMES_EV_INFDROP) | |
1945 | __orinoco_ev_infdrop(dev, hw); | |
1946 | if (events & HERMES_EV_INFO) | |
1947 | __orinoco_ev_info(dev, hw); | |
1948 | if (events & HERMES_EV_RX) | |
1949 | __orinoco_ev_rx(dev, hw); | |
1950 | if (events & HERMES_EV_TXEXC) | |
1951 | __orinoco_ev_txexc(dev, hw); | |
1952 | if (events & HERMES_EV_TX) | |
1953 | __orinoco_ev_tx(dev, hw); | |
1954 | if (events & HERMES_EV_ALLOC) | |
1955 | __orinoco_ev_alloc(dev, hw); | |
6fe9deb1 | 1956 | |
84d8a2fb | 1957 | hermes_write_regn(hw, EVACK, evstat); |
1da177e4 LT |
1958 | |
1959 | evstat = hermes_read_regn(hw, EVSTAT); | |
1960 | events = evstat & hw->inten; | |
6403eab1 | 1961 | } |
1da177e4 LT |
1962 | |
1963 | orinoco_unlock(priv, &flags); | |
1964 | return IRQ_HANDLED; | |
1965 | } | |
2131266d | 1966 | EXPORT_SYMBOL(orinoco_interrupt); |
1da177e4 | 1967 | |
39d1ffee DK |
1968 | /********************************************************************/ |
1969 | /* Power management */ | |
1970 | /********************************************************************/ | |
1971 | #if defined(CONFIG_PM_SLEEP) && !defined(CONFIG_HERMES_CACHE_FW_ON_INIT) | |
1972 | static int orinoco_pm_notifier(struct notifier_block *notifier, | |
1973 | unsigned long pm_event, | |
1974 | void *unused) | |
1975 | { | |
1976 | struct orinoco_private *priv = container_of(notifier, | |
1977 | struct orinoco_private, | |
1978 | pm_notifier); | |
1979 | ||
1980 | /* All we need to do is cache the firmware before suspend, and | |
1981 | * release it when we come out. | |
1982 | * | |
1983 | * Only need to do this if we're downloading firmware. */ | |
1984 | if (!priv->do_fw_download) | |
1985 | return NOTIFY_DONE; | |
1986 | ||
1987 | switch (pm_event) { | |
1988 | case PM_HIBERNATION_PREPARE: | |
1989 | case PM_SUSPEND_PREPARE: | |
1990 | orinoco_cache_fw(priv, 0); | |
1991 | break; | |
1992 | ||
1993 | case PM_POST_RESTORE: | |
1994 | /* Restore from hibernation failed. We need to clean | |
1995 | * up in exactly the same way, so fall through. */ | |
1996 | case PM_POST_HIBERNATION: | |
1997 | case PM_POST_SUSPEND: | |
1998 | orinoco_uncache_fw(priv); | |
1999 | break; | |
2000 | ||
2001 | case PM_RESTORE_PREPARE: | |
2002 | default: | |
2003 | break; | |
2004 | } | |
2005 | ||
2006 | return NOTIFY_DONE; | |
2007 | } | |
f11c179e DM |
2008 | |
2009 | static void orinoco_register_pm_notifier(struct orinoco_private *priv) | |
2010 | { | |
2011 | priv->pm_notifier.notifier_call = orinoco_pm_notifier; | |
2012 | register_pm_notifier(&priv->pm_notifier); | |
2013 | } | |
2014 | ||
2015 | static void orinoco_unregister_pm_notifier(struct orinoco_private *priv) | |
2016 | { | |
2017 | unregister_pm_notifier(&priv->pm_notifier); | |
2018 | } | |
39d1ffee | 2019 | #else /* !PM_SLEEP || HERMES_CACHE_FW_ON_INIT */ |
f11c179e DM |
2020 | #define orinoco_register_pm_notifier(priv) do { } while(0) |
2021 | #define orinoco_unregister_pm_notifier(priv) do { } while(0) | |
39d1ffee DK |
2022 | #endif |
2023 | ||
1da177e4 LT |
2024 | /********************************************************************/ |
2025 | /* Initialization */ | |
2026 | /********************************************************************/ | |
2027 | ||
8e638267 | 2028 | int orinoco_init(struct orinoco_private *priv) |
1da177e4 | 2029 | { |
8e638267 | 2030 | struct device *dev = priv->dev; |
ea60a6aa | 2031 | struct wiphy *wiphy = priv_to_wiphy(priv); |
1da177e4 LT |
2032 | hermes_t *hw = &priv->hw; |
2033 | int err = 0; | |
1da177e4 | 2034 | |
1da177e4 LT |
2035 | /* No need to lock, the hw_unavailable flag is already set in |
2036 | * alloc_orinocodev() */ | |
2c706002 | 2037 | priv->nicbuf_size = IEEE80211_MAX_FRAME_LEN + ETH_HLEN; |
1da177e4 LT |
2038 | |
2039 | /* Initialize the firmware */ | |
b42f2074 | 2040 | err = hw->ops->init(hw); |
1da177e4 | 2041 | if (err != 0) { |
8e638267 DK |
2042 | dev_err(dev, "Failed to initialize firmware (err = %d)\n", |
2043 | err); | |
1da177e4 LT |
2044 | goto out; |
2045 | } | |
2046 | ||
3414fc3f DK |
2047 | err = determine_fw_capabilities(priv, wiphy->fw_version, |
2048 | sizeof(wiphy->fw_version), | |
2049 | &wiphy->hw_version); | |
1da177e4 | 2050 | if (err != 0) { |
8e638267 | 2051 | dev_err(dev, "Incompatible firmware, aborting\n"); |
1da177e4 LT |
2052 | goto out; |
2053 | } | |
2054 | ||
3994d502 | 2055 | if (priv->do_fw_download) { |
39d1ffee | 2056 | #ifdef CONFIG_HERMES_CACHE_FW_ON_INIT |
74734312 | 2057 | orinoco_cache_fw(priv, 0); |
39d1ffee | 2058 | #endif |
74734312 | 2059 | |
3994d502 DK |
2060 | err = orinoco_download(priv); |
2061 | if (err) | |
2062 | priv->do_fw_download = 0; | |
2063 | ||
2064 | /* Check firmware version again */ | |
3414fc3f DK |
2065 | err = determine_fw_capabilities(priv, wiphy->fw_version, |
2066 | sizeof(wiphy->fw_version), | |
2067 | &wiphy->hw_version); | |
3994d502 | 2068 | if (err != 0) { |
8e638267 | 2069 | dev_err(dev, "Incompatible firmware, aborting\n"); |
3994d502 DK |
2070 | goto out; |
2071 | } | |
2072 | } | |
2073 | ||
1da177e4 | 2074 | if (priv->has_port3) |
8e638267 | 2075 | dev_info(dev, "Ad-hoc demo mode supported\n"); |
1da177e4 | 2076 | if (priv->has_ibss) |
8e638267 DK |
2077 | dev_info(dev, "IEEE standard IBSS ad-hoc mode supported\n"); |
2078 | if (priv->has_wep) | |
2079 | dev_info(dev, "WEP supported, %s-bit key\n", | |
2080 | priv->has_big_wep ? "104" : "40"); | |
23edcc41 | 2081 | if (priv->has_wpa) { |
8e638267 | 2082 | dev_info(dev, "WPA-PSK supported\n"); |
23edcc41 | 2083 | if (orinoco_mic_init(priv)) { |
8e638267 DK |
2084 | dev_err(dev, "Failed to setup MIC crypto algorithm. " |
2085 | "Disabling WPA support\n"); | |
23edcc41 DK |
2086 | priv->has_wpa = 0; |
2087 | } | |
2088 | } | |
1da177e4 | 2089 | |
ea60a6aa | 2090 | err = orinoco_hw_read_card_settings(priv, wiphy->perm_addr); |
e9e3d010 | 2091 | if (err) |
1da177e4 | 2092 | goto out; |
1da177e4 | 2093 | |
42a51b93 | 2094 | err = orinoco_hw_allocate_fid(priv); |
37a6c611 | 2095 | if (err) { |
8e638267 | 2096 | dev_err(dev, "Failed to allocate NIC buffer!\n"); |
37a6c611 PR |
2097 | goto out; |
2098 | } | |
2099 | ||
1da177e4 | 2100 | /* Set up the default configuration */ |
5217c571 | 2101 | priv->iw_mode = NL80211_IFTYPE_STATION; |
1da177e4 | 2102 | /* By default use IEEE/IBSS ad-hoc mode if we have it */ |
a94e8427 | 2103 | priv->prefer_port3 = priv->has_port3 && (!priv->has_ibss); |
1da177e4 | 2104 | set_port_type(priv); |
d51d8b1f | 2105 | priv->channel = 0; /* use firmware default */ |
1da177e4 LT |
2106 | |
2107 | priv->promiscuous = 0; | |
5c9f41e2 | 2108 | priv->encode_alg = ORINOCO_ALG_NONE; |
1da177e4 | 2109 | priv->tx_key = 0; |
d03032af DK |
2110 | priv->wpa_enabled = 0; |
2111 | priv->tkip_cm_active = 0; | |
2112 | priv->key_mgmt = 0; | |
2113 | priv->wpa_ie_len = 0; | |
2114 | priv->wpa_ie = NULL; | |
1da177e4 | 2115 | |
ea60a6aa DK |
2116 | if (orinoco_wiphy_register(wiphy)) { |
2117 | err = -ENODEV; | |
2118 | goto out; | |
2119 | } | |
2120 | ||
1da177e4 LT |
2121 | /* Make the hardware available, as long as it hasn't been |
2122 | * removed elsewhere (e.g. by PCMCIA hot unplug) */ | |
bcad6e80 | 2123 | orinoco_lock_irq(priv); |
1da177e4 | 2124 | priv->hw_unavailable--; |
bcad6e80 | 2125 | orinoco_unlock_irq(priv); |
1da177e4 | 2126 | |
8e638267 | 2127 | dev_dbg(dev, "Ready\n"); |
1da177e4 LT |
2128 | |
2129 | out: | |
1da177e4 LT |
2130 | return err; |
2131 | } | |
8e638267 | 2132 | EXPORT_SYMBOL(orinoco_init); |
1da177e4 | 2133 | |
89ea4090 | 2134 | static const struct net_device_ops orinoco_netdev_ops = { |
89ea4090 AB |
2135 | .ndo_open = orinoco_open, |
2136 | .ndo_stop = orinoco_stop, | |
2137 | .ndo_start_xmit = orinoco_xmit, | |
2138 | .ndo_set_multicast_list = orinoco_set_multicast_list, | |
2139 | .ndo_change_mtu = orinoco_change_mtu, | |
240c102d BH |
2140 | .ndo_set_mac_address = eth_mac_addr, |
2141 | .ndo_validate_addr = eth_validate_addr, | |
89ea4090 AB |
2142 | .ndo_tx_timeout = orinoco_tx_timeout, |
2143 | .ndo_get_stats = orinoco_get_stats, | |
2144 | }; | |
2145 | ||
ea60a6aa DK |
2146 | /* Allocate private data. |
2147 | * | |
2148 | * This driver has a number of structures associated with it | |
2149 | * netdev - Net device structure for each network interface | |
2150 | * wiphy - structure associated with wireless phy | |
2151 | * wireless_dev (wdev) - structure for each wireless interface | |
2152 | * hw - structure for hermes chip info | |
2153 | * card - card specific structure for use by the card driver | |
2154 | * (airport, orinoco_cs) | |
2155 | * priv - orinoco private data | |
2156 | * device - generic linux device structure | |
2157 | * | |
2158 | * +---------+ +---------+ | |
2159 | * | wiphy | | netdev | | |
2160 | * | +-------+ | +-------+ | |
2161 | * | | priv | | | wdev | | |
2162 | * | | +-----+ +-+-------+ | |
2163 | * | | | hw | | |
2164 | * | +-+-----+ | |
2165 | * | | card | | |
2166 | * +-+-------+ | |
2167 | * | |
2168 | * priv has a link to netdev and device | |
2169 | * wdev has a link to wiphy | |
2170 | */ | |
a2608362 | 2171 | struct orinoco_private |
3994d502 DK |
2172 | *alloc_orinocodev(int sizeof_card, |
2173 | struct device *device, | |
2174 | int (*hard_reset)(struct orinoco_private *), | |
2175 | int (*stop_fw)(struct orinoco_private *, int)) | |
1da177e4 | 2176 | { |
1da177e4 | 2177 | struct orinoco_private *priv; |
ea60a6aa DK |
2178 | struct wiphy *wiphy; |
2179 | ||
2180 | /* allocate wiphy | |
2181 | * NOTE: We only support a single virtual interface | |
2182 | * but this may change when monitor mode is added | |
2183 | */ | |
2184 | wiphy = wiphy_new(&orinoco_cfg_ops, | |
2185 | sizeof(struct orinoco_private) + sizeof_card); | |
2186 | if (!wiphy) | |
2187 | return NULL; | |
1da177e4 | 2188 | |
ea60a6aa | 2189 | priv = wiphy_priv(wiphy); |
5381956b | 2190 | priv->dev = device; |
ea60a6aa | 2191 | |
1da177e4 | 2192 | if (sizeof_card) |
84d8a2fb | 2193 | priv->card = (void *)((unsigned long)priv |
1da177e4 LT |
2194 | + sizeof(struct orinoco_private)); |
2195 | else | |
2196 | priv->card = NULL; | |
2197 | ||
ea60a6aa DK |
2198 | orinoco_wiphy_init(wiphy); |
2199 | ||
343c686c PR |
2200 | #ifdef WIRELESS_SPY |
2201 | priv->wireless_data.spy_data = &priv->spy_data; | |
343c686c | 2202 | #endif |
23edcc41 | 2203 | |
1da177e4 | 2204 | /* Set up default callbacks */ |
1da177e4 | 2205 | priv->hard_reset = hard_reset; |
3994d502 | 2206 | priv->stop_fw = stop_fw; |
1da177e4 LT |
2207 | |
2208 | spin_lock_init(&priv->lock); | |
2209 | priv->open = 0; | |
2210 | priv->hw_unavailable = 1; /* orinoco_init() must clear this | |
2211 | * before anything else touches the | |
2212 | * hardware */ | |
c4028958 DH |
2213 | INIT_WORK(&priv->reset_work, orinoco_reset); |
2214 | INIT_WORK(&priv->join_work, orinoco_join_ap); | |
2215 | INIT_WORK(&priv->wevent_work, orinoco_send_wevents); | |
1da177e4 | 2216 | |
31afcef3 DK |
2217 | INIT_LIST_HEAD(&priv->rx_list); |
2218 | tasklet_init(&priv->rx_tasklet, orinoco_rx_isr_tasklet, | |
5381956b | 2219 | (unsigned long) priv); |
31afcef3 | 2220 | |
c63cdbe8 DK |
2221 | spin_lock_init(&priv->scan_lock); |
2222 | INIT_LIST_HEAD(&priv->scan_list); | |
2223 | INIT_WORK(&priv->process_scan, orinoco_process_scan_results); | |
2224 | ||
1da177e4 LT |
2225 | priv->last_linkstatus = 0xffff; |
2226 | ||
2bfc5cb5 | 2227 | #if defined(CONFIG_HERMES_CACHE_FW_ON_INIT) || defined(CONFIG_PM_SLEEP) |
2cea7b26 | 2228 | priv->cached_pri_fw = NULL; |
4fb30784 | 2229 | priv->cached_fw = NULL; |
2bfc5cb5 | 2230 | #endif |
4fb30784 | 2231 | |
39d1ffee | 2232 | /* Register PM notifiers */ |
f11c179e | 2233 | orinoco_register_pm_notifier(priv); |
39d1ffee | 2234 | |
a2608362 | 2235 | return priv; |
1da177e4 | 2236 | } |
2131266d | 2237 | EXPORT_SYMBOL(alloc_orinocodev); |
1da177e4 | 2238 | |
5381956b DK |
2239 | /* We can only support a single interface. We provide a separate |
2240 | * function to set it up to distinguish between hardware | |
2241 | * initialisation and interface setup. | |
2242 | * | |
2243 | * The base_addr and irq parameters are passed on to netdev for use | |
2244 | * with SIOCGIFMAP. | |
2245 | */ | |
2246 | int orinoco_if_add(struct orinoco_private *priv, | |
2247 | unsigned long base_addr, | |
593ef09c DK |
2248 | unsigned int irq, |
2249 | const struct net_device_ops *ops) | |
5381956b DK |
2250 | { |
2251 | struct wiphy *wiphy = priv_to_wiphy(priv); | |
2252 | struct wireless_dev *wdev; | |
2253 | struct net_device *dev; | |
2254 | int ret; | |
2255 | ||
2256 | dev = alloc_etherdev(sizeof(struct wireless_dev)); | |
2257 | ||
2258 | if (!dev) | |
2259 | return -ENOMEM; | |
2260 | ||
2261 | /* Initialise wireless_dev */ | |
2262 | wdev = netdev_priv(dev); | |
2263 | wdev->wiphy = wiphy; | |
2264 | wdev->iftype = NL80211_IFTYPE_STATION; | |
2265 | ||
2266 | /* Setup / override net_device fields */ | |
2267 | dev->ieee80211_ptr = wdev; | |
5381956b | 2268 | dev->watchdog_timeo = HZ; /* 1 second timeout */ |
5381956b DK |
2269 | dev->wireless_handlers = &orinoco_handler_def; |
2270 | #ifdef WIRELESS_SPY | |
2271 | dev->wireless_data = &priv->wireless_data; | |
2272 | #endif | |
593ef09c DK |
2273 | /* Default to standard ops if not set */ |
2274 | if (ops) | |
2275 | dev->netdev_ops = ops; | |
2276 | else | |
2277 | dev->netdev_ops = &orinoco_netdev_ops; | |
2278 | ||
5381956b DK |
2279 | /* we use the default eth_mac_addr for setting the MAC addr */ |
2280 | ||
2281 | /* Reserve space in skb for the SNAP header */ | |
bac6fafd | 2282 | dev->needed_headroom = ENCAPS_OVERHEAD; |
5381956b DK |
2283 | |
2284 | netif_carrier_off(dev); | |
2285 | ||
2286 | memcpy(dev->dev_addr, wiphy->perm_addr, ETH_ALEN); | |
cf32ed92 | 2287 | memcpy(dev->perm_addr, wiphy->perm_addr, ETH_ALEN); |
5381956b DK |
2288 | |
2289 | dev->base_addr = base_addr; | |
2290 | dev->irq = irq; | |
2291 | ||
2292 | SET_NETDEV_DEV(dev, priv->dev); | |
2293 | ret = register_netdev(dev); | |
2294 | if (ret) | |
2295 | goto fail; | |
2296 | ||
2297 | priv->ndev = dev; | |
2298 | ||
2299 | /* Report what we've done */ | |
2300 | dev_dbg(priv->dev, "Registerred interface %s.\n", dev->name); | |
2301 | ||
2302 | return 0; | |
2303 | ||
2304 | fail: | |
2305 | free_netdev(dev); | |
2306 | return ret; | |
2307 | } | |
2308 | EXPORT_SYMBOL(orinoco_if_add); | |
2309 | ||
2310 | void orinoco_if_del(struct orinoco_private *priv) | |
1da177e4 | 2311 | { |
a2608362 | 2312 | struct net_device *dev = priv->ndev; |
5381956b DK |
2313 | |
2314 | unregister_netdev(dev); | |
2315 | free_netdev(dev); | |
2316 | } | |
2317 | EXPORT_SYMBOL(orinoco_if_del); | |
2318 | ||
2319 | void free_orinocodev(struct orinoco_private *priv) | |
2320 | { | |
ea60a6aa | 2321 | struct wiphy *wiphy = priv_to_wiphy(priv); |
20953ad6 | 2322 | struct orinoco_rx_data *rx_data, *temp; |
c63cdbe8 | 2323 | struct orinoco_scan_data *sd, *sdtemp; |
95dd91fb | 2324 | |
ea60a6aa DK |
2325 | wiphy_unregister(wiphy); |
2326 | ||
20953ad6 DK |
2327 | /* If the tasklet is scheduled when we call tasklet_kill it |
2328 | * will run one final time. However the tasklet will only | |
2329 | * drain priv->rx_list if the hw is still available. */ | |
31afcef3 | 2330 | tasklet_kill(&priv->rx_tasklet); |
74734312 | 2331 | |
20953ad6 DK |
2332 | /* Explicitly drain priv->rx_list */ |
2333 | list_for_each_entry_safe(rx_data, temp, &priv->rx_list, list) { | |
2334 | list_del(&rx_data->list); | |
2335 | ||
2336 | dev_kfree_skb(rx_data->skb); | |
2337 | kfree(rx_data->desc); | |
2338 | kfree(rx_data); | |
2339 | } | |
2340 | ||
c63cdbe8 DK |
2341 | cancel_work_sync(&priv->process_scan); |
2342 | /* Explicitly drain priv->scan_list */ | |
2343 | list_for_each_entry_safe(sd, sdtemp, &priv->scan_list, list) { | |
2344 | list_del(&sd->list); | |
2345 | ||
2346 | if ((sd->len > 0) && sd->buf) | |
2347 | kfree(sd->buf); | |
2348 | kfree(sd); | |
2349 | } | |
2350 | ||
f11c179e | 2351 | orinoco_unregister_pm_notifier(priv); |
74734312 DK |
2352 | orinoco_uncache_fw(priv); |
2353 | ||
d03032af DK |
2354 | priv->wpa_ie_len = 0; |
2355 | kfree(priv->wpa_ie); | |
23edcc41 | 2356 | orinoco_mic_free(priv); |
ea60a6aa | 2357 | wiphy_free(wiphy); |
1da177e4 | 2358 | } |
2131266d | 2359 | EXPORT_SYMBOL(free_orinocodev); |
1da177e4 | 2360 | |
6415f7df DK |
2361 | int orinoco_up(struct orinoco_private *priv) |
2362 | { | |
2363 | struct net_device *dev = priv->ndev; | |
2364 | unsigned long flags; | |
2365 | int err; | |
2366 | ||
bcad6e80 | 2367 | priv->hw.ops->lock_irqsave(&priv->lock, &flags); |
6415f7df DK |
2368 | |
2369 | err = orinoco_reinit_firmware(priv); | |
2370 | if (err) { | |
2371 | printk(KERN_ERR "%s: Error %d re-initializing firmware\n", | |
2372 | dev->name, err); | |
2373 | goto exit; | |
2374 | } | |
2375 | ||
2376 | netif_device_attach(dev); | |
2377 | priv->hw_unavailable--; | |
2378 | ||
2379 | if (priv->open && !priv->hw_unavailable) { | |
2380 | err = __orinoco_up(priv); | |
2381 | if (err) | |
2382 | printk(KERN_ERR "%s: Error %d restarting card\n", | |
2383 | dev->name, err); | |
2384 | } | |
2385 | ||
2386 | exit: | |
bcad6e80 | 2387 | priv->hw.ops->unlock_irqrestore(&priv->lock, &flags); |
6415f7df DK |
2388 | |
2389 | return 0; | |
2390 | } | |
2391 | EXPORT_SYMBOL(orinoco_up); | |
2392 | ||
2393 | void orinoco_down(struct orinoco_private *priv) | |
2394 | { | |
2395 | struct net_device *dev = priv->ndev; | |
2396 | unsigned long flags; | |
2397 | int err; | |
2398 | ||
bcad6e80 | 2399 | priv->hw.ops->lock_irqsave(&priv->lock, &flags); |
6415f7df DK |
2400 | err = __orinoco_down(priv); |
2401 | if (err) | |
2402 | printk(KERN_WARNING "%s: Error %d downing interface\n", | |
2403 | dev->name, err); | |
2404 | ||
2405 | netif_device_detach(dev); | |
2406 | priv->hw_unavailable++; | |
bcad6e80 | 2407 | priv->hw.ops->unlock_irqrestore(&priv->lock, &flags); |
6415f7df DK |
2408 | } |
2409 | EXPORT_SYMBOL(orinoco_down); | |
2410 | ||
1da177e4 LT |
2411 | /********************************************************************/ |
2412 | /* Module initialization */ | |
2413 | /********************************************************************/ | |
2414 | ||
1da177e4 LT |
2415 | /* Can't be declared "const" or the whole __initdata section will |
2416 | * become const */ | |
2417 | static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION | |
2418 | " (David Gibson <hermes@gibson.dropbear.id.au>, " | |
2419 | "Pavel Roskin <proski@gnu.org>, et al)"; | |
2420 | ||
2421 | static int __init init_orinoco(void) | |
2422 | { | |
2423 | printk(KERN_DEBUG "%s\n", version); | |
2424 | return 0; | |
2425 | } | |
2426 | ||
2427 | static void __exit exit_orinoco(void) | |
2428 | { | |
2429 | } | |
2430 | ||
2431 | module_init(init_orinoco); | |
2432 | module_exit(exit_orinoco); |