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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> | |
81 | #include <linux/init.h> | |
d03032af | 82 | #include <linux/delay.h> |
8e638267 | 83 | #include <linux/device.h> |
1da177e4 | 84 | #include <linux/netdevice.h> |
1da177e4 | 85 | #include <linux/etherdevice.h> |
1fab2e8b | 86 | #include <linux/ethtool.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 | |
7282d491 | 165 | static const struct ethtool_ops orinoco_ethtool_ops; |
620554e4 | 166 | |
1da177e4 LT |
167 | /********************************************************************/ |
168 | /* Data types */ | |
169 | /********************************************************************/ | |
170 | ||
30c2d3b4 PR |
171 | /* Beginning of the Tx descriptor, used in TxExc handling */ |
172 | struct hermes_txexc_data { | |
173 | struct hermes_tx_descriptor desc; | |
d133ae4c PR |
174 | __le16 frame_ctl; |
175 | __le16 duration_id; | |
95dd91fb | 176 | u8 addr1[ETH_ALEN]; |
1da177e4 LT |
177 | } __attribute__ ((packed)); |
178 | ||
8f2abf44 | 179 | /* Rx frame header except compatibility 802.3 header */ |
1da177e4 | 180 | struct hermes_rx_descriptor { |
8f2abf44 | 181 | /* Control */ |
d133ae4c PR |
182 | __le16 status; |
183 | __le32 time; | |
1da177e4 LT |
184 | u8 silence; |
185 | u8 signal; | |
186 | u8 rate; | |
187 | u8 rxflow; | |
d133ae4c | 188 | __le32 reserved; |
8f2abf44 CH |
189 | |
190 | /* 802.11 header */ | |
d133ae4c PR |
191 | __le16 frame_ctl; |
192 | __le16 duration_id; | |
8f2abf44 CH |
193 | u8 addr1[ETH_ALEN]; |
194 | u8 addr2[ETH_ALEN]; | |
195 | u8 addr3[ETH_ALEN]; | |
d133ae4c | 196 | __le16 seq_ctl; |
8f2abf44 CH |
197 | u8 addr4[ETH_ALEN]; |
198 | ||
199 | /* Data length */ | |
d133ae4c | 200 | __le16 data_len; |
1da177e4 LT |
201 | } __attribute__ ((packed)); |
202 | ||
47166791 DK |
203 | struct orinoco_rx_data { |
204 | struct hermes_rx_descriptor *desc; | |
205 | struct sk_buff *skb; | |
206 | struct list_head list; | |
207 | }; | |
208 | ||
c63cdbe8 DK |
209 | struct orinoco_scan_data { |
210 | void *buf; | |
211 | size_t len; | |
212 | int type; | |
213 | struct list_head list; | |
214 | }; | |
215 | ||
1da177e4 LT |
216 | /********************************************************************/ |
217 | /* Function prototypes */ | |
218 | /********************************************************************/ | |
219 | ||
721aa2f7 | 220 | static int __orinoco_set_multicast_list(struct net_device *dev); |
6415f7df DK |
221 | static int __orinoco_up(struct orinoco_private *priv); |
222 | static int __orinoco_down(struct orinoco_private *priv); | |
721aa2f7 | 223 | static int __orinoco_commit(struct orinoco_private *priv); |
1da177e4 LT |
224 | |
225 | /********************************************************************/ | |
226 | /* Internal helper functions */ | |
227 | /********************************************************************/ | |
228 | ||
cb1576a8 | 229 | void set_port_type(struct orinoco_private *priv) |
1da177e4 LT |
230 | { |
231 | switch (priv->iw_mode) { | |
5217c571 | 232 | case NL80211_IFTYPE_STATION: |
1da177e4 LT |
233 | priv->port_type = 1; |
234 | priv->createibss = 0; | |
235 | break; | |
5217c571 | 236 | case NL80211_IFTYPE_ADHOC: |
1da177e4 LT |
237 | if (priv->prefer_port3) { |
238 | priv->port_type = 3; | |
239 | priv->createibss = 0; | |
240 | } else { | |
241 | priv->port_type = priv->ibss_port; | |
242 | priv->createibss = 1; | |
243 | } | |
244 | break; | |
5217c571 | 245 | case NL80211_IFTYPE_MONITOR: |
98c4cae1 CH |
246 | priv->port_type = 3; |
247 | priv->createibss = 0; | |
248 | break; | |
1da177e4 LT |
249 | default: |
250 | printk(KERN_ERR "%s: Invalid priv->iw_mode in set_port_type()\n", | |
251 | priv->ndev->name); | |
252 | } | |
253 | } | |
254 | ||
255 | /********************************************************************/ | |
256 | /* Device methods */ | |
257 | /********************************************************************/ | |
258 | ||
259 | static int orinoco_open(struct net_device *dev) | |
260 | { | |
ea60a6aa | 261 | struct orinoco_private *priv = ndev_priv(dev); |
1da177e4 LT |
262 | unsigned long flags; |
263 | int err; | |
264 | ||
265 | if (orinoco_lock(priv, &flags) != 0) | |
266 | return -EBUSY; | |
267 | ||
a2608362 | 268 | err = __orinoco_up(priv); |
1da177e4 | 269 | |
a94e8427 | 270 | if (!err) |
1da177e4 LT |
271 | priv->open = 1; |
272 | ||
273 | orinoco_unlock(priv, &flags); | |
274 | ||
275 | return err; | |
276 | } | |
277 | ||
ad8f451b | 278 | static int orinoco_stop(struct net_device *dev) |
1da177e4 | 279 | { |
ea60a6aa | 280 | struct orinoco_private *priv = ndev_priv(dev); |
1da177e4 LT |
281 | int err = 0; |
282 | ||
283 | /* We mustn't use orinoco_lock() here, because we need to be | |
284 | able to close the interface even if hw_unavailable is set | |
285 | (e.g. as we're released after a PC Card removal) */ | |
286 | spin_lock_irq(&priv->lock); | |
287 | ||
288 | priv->open = 0; | |
289 | ||
a2608362 | 290 | err = __orinoco_down(priv); |
1da177e4 LT |
291 | |
292 | spin_unlock_irq(&priv->lock); | |
293 | ||
294 | return err; | |
295 | } | |
296 | ||
297 | static struct net_device_stats *orinoco_get_stats(struct net_device *dev) | |
298 | { | |
ea60a6aa | 299 | struct orinoco_private *priv = ndev_priv(dev); |
6fe9deb1 | 300 | |
1da177e4 LT |
301 | return &priv->stats; |
302 | } | |
303 | ||
1da177e4 LT |
304 | static void orinoco_set_multicast_list(struct net_device *dev) |
305 | { | |
ea60a6aa | 306 | struct orinoco_private *priv = ndev_priv(dev); |
1da177e4 LT |
307 | unsigned long flags; |
308 | ||
309 | if (orinoco_lock(priv, &flags) != 0) { | |
310 | printk(KERN_DEBUG "%s: orinoco_set_multicast_list() " | |
311 | "called when hw_unavailable\n", dev->name); | |
312 | return; | |
313 | } | |
314 | ||
315 | __orinoco_set_multicast_list(dev); | |
316 | orinoco_unlock(priv, &flags); | |
317 | } | |
318 | ||
319 | static int orinoco_change_mtu(struct net_device *dev, int new_mtu) | |
320 | { | |
ea60a6aa | 321 | struct orinoco_private *priv = ndev_priv(dev); |
1da177e4 | 322 | |
a94e8427 | 323 | if ((new_mtu < ORINOCO_MIN_MTU) || (new_mtu > ORINOCO_MAX_MTU)) |
1da177e4 LT |
324 | return -EINVAL; |
325 | ||
2c706002 | 326 | /* MTU + encapsulation + header length */ |
a94e8427 DK |
327 | if ((new_mtu + ENCAPS_OVERHEAD + sizeof(struct ieee80211_hdr)) > |
328 | (priv->nicbuf_size - ETH_HLEN)) | |
1da177e4 LT |
329 | return -EINVAL; |
330 | ||
331 | dev->mtu = new_mtu; | |
332 | ||
333 | return 0; | |
334 | } | |
335 | ||
336 | /********************************************************************/ | |
337 | /* Tx path */ | |
338 | /********************************************************************/ | |
339 | ||
340 | static int orinoco_xmit(struct sk_buff *skb, struct net_device *dev) | |
341 | { | |
ea60a6aa | 342 | struct orinoco_private *priv = ndev_priv(dev); |
1da177e4 LT |
343 | struct net_device_stats *stats = &priv->stats; |
344 | hermes_t *hw = &priv->hw; | |
345 | int err = 0; | |
346 | u16 txfid = priv->txfid; | |
1da177e4 | 347 | struct ethhdr *eh; |
6eecad77 | 348 | int tx_control; |
1da177e4 LT |
349 | unsigned long flags; |
350 | ||
a94e8427 | 351 | if (!netif_running(dev)) { |
1da177e4 LT |
352 | printk(KERN_ERR "%s: Tx on stopped device!\n", |
353 | dev->name); | |
b34b867e | 354 | return NETDEV_TX_BUSY; |
1da177e4 | 355 | } |
6fe9deb1 | 356 | |
1da177e4 | 357 | if (netif_queue_stopped(dev)) { |
6fe9deb1 | 358 | printk(KERN_DEBUG "%s: Tx while transmitter busy!\n", |
1da177e4 | 359 | dev->name); |
b34b867e | 360 | return NETDEV_TX_BUSY; |
1da177e4 | 361 | } |
6fe9deb1 | 362 | |
1da177e4 LT |
363 | if (orinoco_lock(priv, &flags) != 0) { |
364 | printk(KERN_ERR "%s: orinoco_xmit() called while hw_unavailable\n", | |
365 | dev->name); | |
b34b867e | 366 | return NETDEV_TX_BUSY; |
1da177e4 LT |
367 | } |
368 | ||
5217c571 DK |
369 | if (!netif_carrier_ok(dev) || |
370 | (priv->iw_mode == NL80211_IFTYPE_MONITOR)) { | |
1da177e4 | 371 | /* Oops, the firmware hasn't established a connection, |
6fe9deb1 DK |
372 | silently drop the packet (this seems to be the |
373 | safest approach). */ | |
470e2aa6 | 374 | goto drop; |
1da177e4 LT |
375 | } |
376 | ||
8d5be088 | 377 | /* Check packet length */ |
a28dc81d | 378 | if (skb->len < ETH_HLEN) |
470e2aa6 | 379 | goto drop; |
1da177e4 | 380 | |
6eecad77 DK |
381 | tx_control = HERMES_TXCTRL_TX_OK | HERMES_TXCTRL_TX_EX; |
382 | ||
5c9f41e2 | 383 | if (priv->encode_alg == ORINOCO_ALG_TKIP) |
23edcc41 DK |
384 | tx_control |= (priv->tx_key << HERMES_MIC_KEY_ID_SHIFT) | |
385 | HERMES_TXCTRL_MIC; | |
386 | ||
6eecad77 DK |
387 | if (priv->has_alt_txcntl) { |
388 | /* WPA enabled firmwares have tx_cntl at the end of | |
389 | * the 802.11 header. So write zeroed descriptor and | |
390 | * 802.11 header at the same time | |
391 | */ | |
392 | char desc[HERMES_802_3_OFFSET]; | |
393 | __le16 *txcntl = (__le16 *) &desc[HERMES_TXCNTL2_OFFSET]; | |
394 | ||
395 | memset(&desc, 0, sizeof(desc)); | |
396 | ||
397 | *txcntl = cpu_to_le16(tx_control); | |
398 | err = hermes_bap_pwrite(hw, USER_BAP, &desc, sizeof(desc), | |
399 | txfid, 0); | |
400 | if (err) { | |
401 | if (net_ratelimit()) | |
402 | printk(KERN_ERR "%s: Error %d writing Tx " | |
403 | "descriptor to BAP\n", dev->name, err); | |
404 | goto busy; | |
405 | } | |
406 | } else { | |
407 | struct hermes_tx_descriptor desc; | |
408 | ||
409 | memset(&desc, 0, sizeof(desc)); | |
410 | ||
411 | desc.tx_control = cpu_to_le16(tx_control); | |
412 | err = hermes_bap_pwrite(hw, USER_BAP, &desc, sizeof(desc), | |
413 | txfid, 0); | |
414 | if (err) { | |
415 | if (net_ratelimit()) | |
416 | printk(KERN_ERR "%s: Error %d writing Tx " | |
417 | "descriptor to BAP\n", dev->name, err); | |
418 | goto busy; | |
419 | } | |
1da177e4 | 420 | |
6eecad77 DK |
421 | /* Clear the 802.11 header and data length fields - some |
422 | * firmwares (e.g. Lucent/Agere 8.xx) appear to get confused | |
423 | * if this isn't done. */ | |
424 | hermes_clear_words(hw, HERMES_DATA0, | |
425 | HERMES_802_3_OFFSET - HERMES_802_11_OFFSET); | |
426 | } | |
1da177e4 | 427 | |
23edcc41 DK |
428 | eh = (struct ethhdr *)skb->data; |
429 | ||
1da177e4 LT |
430 | /* Encapsulate Ethernet-II frames */ |
431 | if (ntohs(eh->h_proto) > ETH_DATA_LEN) { /* Ethernet-II frame */ | |
a28dc81d PR |
432 | struct header_struct { |
433 | struct ethhdr eth; /* 802.3 header */ | |
434 | u8 encap[6]; /* 802.2 header */ | |
435 | } __attribute__ ((packed)) hdr; | |
436 | ||
437 | /* Strip destination and source from the data */ | |
438 | skb_pull(skb, 2 * ETH_ALEN); | |
a28dc81d PR |
439 | |
440 | /* And move them to a separate header */ | |
441 | memcpy(&hdr.eth, eh, 2 * ETH_ALEN); | |
442 | hdr.eth.h_proto = htons(sizeof(encaps_hdr) + skb->len); | |
443 | memcpy(hdr.encap, encaps_hdr, sizeof(encaps_hdr)); | |
444 | ||
23edcc41 DK |
445 | /* Insert the SNAP header */ |
446 | if (skb_headroom(skb) < sizeof(hdr)) { | |
447 | printk(KERN_ERR | |
448 | "%s: Not enough headroom for 802.2 headers %d\n", | |
449 | dev->name, skb_headroom(skb)); | |
450 | goto drop; | |
1da177e4 | 451 | } |
23edcc41 DK |
452 | eh = (struct ethhdr *) skb_push(skb, sizeof(hdr)); |
453 | memcpy(eh, &hdr, sizeof(hdr)); | |
1da177e4 LT |
454 | } |
455 | ||
a28dc81d | 456 | err = hermes_bap_pwrite(hw, USER_BAP, skb->data, skb->len, |
23edcc41 | 457 | txfid, HERMES_802_3_OFFSET); |
1da177e4 LT |
458 | if (err) { |
459 | printk(KERN_ERR "%s: Error %d writing packet to BAP\n", | |
460 | dev->name, err); | |
470e2aa6 | 461 | goto busy; |
1da177e4 LT |
462 | } |
463 | ||
23edcc41 | 464 | /* Calculate Michael MIC */ |
5c9f41e2 | 465 | if (priv->encode_alg == ORINOCO_ALG_TKIP) { |
23edcc41 DK |
466 | u8 mic_buf[MICHAEL_MIC_LEN + 1]; |
467 | u8 *mic; | |
468 | size_t offset; | |
469 | size_t len; | |
470 | ||
471 | if (skb->len % 2) { | |
472 | /* MIC start is on an odd boundary */ | |
473 | mic_buf[0] = skb->data[skb->len - 1]; | |
474 | mic = &mic_buf[1]; | |
475 | offset = skb->len - 1; | |
476 | len = MICHAEL_MIC_LEN + 1; | |
477 | } else { | |
478 | mic = &mic_buf[0]; | |
479 | offset = skb->len; | |
480 | len = MICHAEL_MIC_LEN; | |
481 | } | |
482 | ||
4adb474b | 483 | orinoco_mic(priv->tx_tfm_mic, |
23edcc41 DK |
484 | priv->tkip_key[priv->tx_key].tx_mic, |
485 | eh->h_dest, eh->h_source, 0 /* priority */, | |
486 | skb->data + ETH_HLEN, skb->len - ETH_HLEN, mic); | |
487 | ||
488 | /* Write the MIC */ | |
489 | err = hermes_bap_pwrite(hw, USER_BAP, &mic_buf[0], len, | |
490 | txfid, HERMES_802_3_OFFSET + offset); | |
491 | if (err) { | |
492 | printk(KERN_ERR "%s: Error %d writing MIC to BAP\n", | |
493 | dev->name, err); | |
494 | goto busy; | |
495 | } | |
496 | } | |
497 | ||
1da177e4 LT |
498 | /* Finally, we actually initiate the send */ |
499 | netif_stop_queue(dev); | |
500 | ||
501 | err = hermes_docmd_wait(hw, HERMES_CMD_TX | HERMES_CMD_RECL, | |
502 | txfid, NULL); | |
503 | if (err) { | |
504 | netif_start_queue(dev); | |
c367c21c AM |
505 | if (net_ratelimit()) |
506 | printk(KERN_ERR "%s: Error %d transmitting packet\n", | |
507 | dev->name, err); | |
470e2aa6 | 508 | goto busy; |
1da177e4 LT |
509 | } |
510 | ||
511 | dev->trans_start = jiffies; | |
23edcc41 | 512 | stats->tx_bytes += HERMES_802_3_OFFSET + skb->len; |
470e2aa6 | 513 | goto ok; |
1da177e4 | 514 | |
470e2aa6 PR |
515 | drop: |
516 | stats->tx_errors++; | |
517 | stats->tx_dropped++; | |
1da177e4 | 518 | |
470e2aa6 PR |
519 | ok: |
520 | orinoco_unlock(priv, &flags); | |
1da177e4 | 521 | dev_kfree_skb(skb); |
b34b867e | 522 | return NETDEV_TX_OK; |
1da177e4 | 523 | |
470e2aa6 | 524 | busy: |
2c1bd260 JB |
525 | if (err == -EIO) |
526 | schedule_work(&priv->reset_work); | |
1da177e4 | 527 | orinoco_unlock(priv, &flags); |
b34b867e | 528 | return NETDEV_TX_BUSY; |
1da177e4 LT |
529 | } |
530 | ||
531 | static void __orinoco_ev_alloc(struct net_device *dev, hermes_t *hw) | |
532 | { | |
ea60a6aa | 533 | struct orinoco_private *priv = ndev_priv(dev); |
1da177e4 LT |
534 | u16 fid = hermes_read_regn(hw, ALLOCFID); |
535 | ||
536 | if (fid != priv->txfid) { | |
537 | if (fid != DUMMY_FID) | |
538 | printk(KERN_WARNING "%s: Allocate event on unexpected fid (%04X)\n", | |
539 | dev->name, fid); | |
540 | return; | |
541 | } | |
542 | ||
543 | hermes_write_regn(hw, ALLOCFID, DUMMY_FID); | |
544 | } | |
545 | ||
546 | static void __orinoco_ev_tx(struct net_device *dev, hermes_t *hw) | |
547 | { | |
ea60a6aa | 548 | struct orinoco_private *priv = ndev_priv(dev); |
1da177e4 LT |
549 | struct net_device_stats *stats = &priv->stats; |
550 | ||
551 | stats->tx_packets++; | |
552 | ||
553 | netif_wake_queue(dev); | |
554 | ||
555 | hermes_write_regn(hw, TXCOMPLFID, DUMMY_FID); | |
556 | } | |
557 | ||
558 | static void __orinoco_ev_txexc(struct net_device *dev, hermes_t *hw) | |
559 | { | |
ea60a6aa | 560 | struct orinoco_private *priv = ndev_priv(dev); |
1da177e4 LT |
561 | struct net_device_stats *stats = &priv->stats; |
562 | u16 fid = hermes_read_regn(hw, TXCOMPLFID); | |
d133ae4c | 563 | u16 status; |
30c2d3b4 | 564 | struct hermes_txexc_data hdr; |
1da177e4 LT |
565 | int err = 0; |
566 | ||
567 | if (fid == DUMMY_FID) | |
568 | return; /* Nothing's really happened */ | |
569 | ||
48ca7038 | 570 | /* Read part of the frame header - we need status and addr1 */ |
95dd91fb | 571 | err = hermes_bap_pread(hw, IRQ_BAP, &hdr, |
30c2d3b4 | 572 | sizeof(struct hermes_txexc_data), |
95dd91fb CH |
573 | fid, 0); |
574 | ||
575 | hermes_write_regn(hw, TXCOMPLFID, DUMMY_FID); | |
576 | stats->tx_errors++; | |
577 | ||
1da177e4 LT |
578 | if (err) { |
579 | printk(KERN_WARNING "%s: Unable to read descriptor on Tx error " | |
580 | "(FID=%04X error %d)\n", | |
581 | dev->name, fid, err); | |
95dd91fb | 582 | return; |
1da177e4 | 583 | } |
6fe9deb1 | 584 | |
95dd91fb CH |
585 | DEBUG(1, "%s: Tx error, err %d (FID=%04X)\n", dev->name, |
586 | err, fid); | |
6fe9deb1 | 587 | |
95dd91fb CH |
588 | /* We produce a TXDROP event only for retry or lifetime |
589 | * exceeded, because that's the only status that really mean | |
590 | * that this particular node went away. | |
591 | * Other errors means that *we* screwed up. - Jean II */ | |
30c2d3b4 | 592 | status = le16_to_cpu(hdr.desc.status); |
d133ae4c | 593 | if (status & (HERMES_TXSTAT_RETRYERR | HERMES_TXSTAT_AGEDERR)) { |
95dd91fb CH |
594 | union iwreq_data wrqu; |
595 | ||
596 | /* Copy 802.11 dest address. | |
597 | * We use the 802.11 header because the frame may | |
598 | * not be 802.3 or may be mangled... | |
599 | * In Ad-Hoc mode, it will be the node address. | |
600 | * In managed mode, it will be most likely the AP addr | |
601 | * User space will figure out how to convert it to | |
602 | * whatever it needs (IP address or else). | |
603 | * - Jean II */ | |
604 | memcpy(wrqu.addr.sa_data, hdr.addr1, ETH_ALEN); | |
605 | wrqu.addr.sa_family = ARPHRD_ETHER; | |
606 | ||
607 | /* Send event to user space */ | |
608 | wireless_send_event(dev, IWEVTXDROP, &wrqu, NULL); | |
609 | } | |
1da177e4 LT |
610 | |
611 | netif_wake_queue(dev); | |
1da177e4 LT |
612 | } |
613 | ||
614 | static void orinoco_tx_timeout(struct net_device *dev) | |
615 | { | |
ea60a6aa | 616 | struct orinoco_private *priv = ndev_priv(dev); |
1da177e4 LT |
617 | struct net_device_stats *stats = &priv->stats; |
618 | struct hermes *hw = &priv->hw; | |
619 | ||
620 | printk(KERN_WARNING "%s: Tx timeout! " | |
621 | "ALLOCFID=%04x, TXCOMPLFID=%04x, EVSTAT=%04x\n", | |
622 | dev->name, hermes_read_regn(hw, ALLOCFID), | |
623 | hermes_read_regn(hw, TXCOMPLFID), hermes_read_regn(hw, EVSTAT)); | |
624 | ||
625 | stats->tx_errors++; | |
626 | ||
627 | schedule_work(&priv->reset_work); | |
628 | } | |
629 | ||
630 | /********************************************************************/ | |
631 | /* Rx path (data frames) */ | |
632 | /********************************************************************/ | |
633 | ||
634 | /* Does the frame have a SNAP header indicating it should be | |
635 | * de-encapsulated to Ethernet-II? */ | |
636 | static inline int is_ethersnap(void *_hdr) | |
637 | { | |
638 | u8 *hdr = _hdr; | |
639 | ||
640 | /* We de-encapsulate all packets which, a) have SNAP headers | |
641 | * (i.e. SSAP=DSAP=0xaa and CTRL=0x3 in the 802.2 LLC header | |
642 | * and where b) the OUI of the SNAP header is 00:00:00 or | |
643 | * 00:00:f8 - we need both because different APs appear to use | |
644 | * different OUIs for some reason */ | |
645 | return (memcmp(hdr, &encaps_hdr, 5) == 0) | |
a94e8427 | 646 | && ((hdr[5] == 0x00) || (hdr[5] == 0xf8)); |
1da177e4 LT |
647 | } |
648 | ||
649 | static inline void orinoco_spy_gather(struct net_device *dev, u_char *mac, | |
650 | int level, int noise) | |
651 | { | |
343c686c PR |
652 | struct iw_quality wstats; |
653 | wstats.level = level - 0x95; | |
654 | wstats.noise = noise - 0x95; | |
655 | wstats.qual = (level > noise) ? (level - noise) : 0; | |
f941f859 | 656 | wstats.updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM; |
343c686c PR |
657 | /* Update spy records */ |
658 | wireless_spy_update(dev, mac, &wstats); | |
1da177e4 LT |
659 | } |
660 | ||
661 | static void orinoco_stat_gather(struct net_device *dev, | |
662 | struct sk_buff *skb, | |
663 | struct hermes_rx_descriptor *desc) | |
664 | { | |
ea60a6aa | 665 | struct orinoco_private *priv = ndev_priv(dev); |
1da177e4 LT |
666 | |
667 | /* Using spy support with lots of Rx packets, like in an | |
668 | * infrastructure (AP), will really slow down everything, because | |
669 | * the MAC address must be compared to each entry of the spy list. | |
670 | * If the user really asks for it (set some address in the | |
671 | * spy list), we do it, but he will pay the price. | |
672 | * Note that to get here, you need both WIRELESS_SPY | |
673 | * compiled in AND some addresses in the list !!! | |
674 | */ | |
675 | /* Note : gcc will optimise the whole section away if | |
676 | * WIRELESS_SPY is not defined... - Jean II */ | |
677 | if (SPY_NUMBER(priv)) { | |
98e399f8 | 678 | orinoco_spy_gather(dev, skb_mac_header(skb) + ETH_ALEN, |
1da177e4 LT |
679 | desc->signal, desc->silence); |
680 | } | |
681 | } | |
682 | ||
98c4cae1 CH |
683 | /* |
684 | * orinoco_rx_monitor - handle received monitor frames. | |
685 | * | |
686 | * Arguments: | |
687 | * dev network device | |
688 | * rxfid received FID | |
689 | * desc rx descriptor of the frame | |
690 | * | |
691 | * Call context: interrupt | |
692 | */ | |
693 | static void orinoco_rx_monitor(struct net_device *dev, u16 rxfid, | |
694 | struct hermes_rx_descriptor *desc) | |
695 | { | |
696 | u32 hdrlen = 30; /* return full header by default */ | |
697 | u32 datalen = 0; | |
698 | u16 fc; | |
699 | int err; | |
700 | int len; | |
701 | struct sk_buff *skb; | |
ea60a6aa | 702 | struct orinoco_private *priv = ndev_priv(dev); |
98c4cae1 CH |
703 | struct net_device_stats *stats = &priv->stats; |
704 | hermes_t *hw = &priv->hw; | |
705 | ||
706 | len = le16_to_cpu(desc->data_len); | |
707 | ||
708 | /* Determine the size of the header and the data */ | |
709 | fc = le16_to_cpu(desc->frame_ctl); | |
710 | switch (fc & IEEE80211_FCTL_FTYPE) { | |
711 | case IEEE80211_FTYPE_DATA: | |
712 | if ((fc & IEEE80211_FCTL_TODS) | |
713 | && (fc & IEEE80211_FCTL_FROMDS)) | |
714 | hdrlen = 30; | |
715 | else | |
716 | hdrlen = 24; | |
717 | datalen = len; | |
718 | break; | |
719 | case IEEE80211_FTYPE_MGMT: | |
720 | hdrlen = 24; | |
721 | datalen = len; | |
722 | break; | |
723 | case IEEE80211_FTYPE_CTL: | |
724 | switch (fc & IEEE80211_FCTL_STYPE) { | |
725 | case IEEE80211_STYPE_PSPOLL: | |
726 | case IEEE80211_STYPE_RTS: | |
727 | case IEEE80211_STYPE_CFEND: | |
728 | case IEEE80211_STYPE_CFENDACK: | |
729 | hdrlen = 16; | |
730 | break; | |
731 | case IEEE80211_STYPE_CTS: | |
732 | case IEEE80211_STYPE_ACK: | |
733 | hdrlen = 10; | |
734 | break; | |
735 | } | |
736 | break; | |
737 | default: | |
738 | /* Unknown frame type */ | |
739 | break; | |
740 | } | |
741 | ||
742 | /* sanity check the length */ | |
2c706002 | 743 | if (datalen > IEEE80211_MAX_DATA_LEN + 12) { |
98c4cae1 CH |
744 | printk(KERN_DEBUG "%s: oversized monitor frame, " |
745 | "data length = %d\n", dev->name, datalen); | |
98c4cae1 CH |
746 | stats->rx_length_errors++; |
747 | goto update_stats; | |
748 | } | |
749 | ||
750 | skb = dev_alloc_skb(hdrlen + datalen); | |
751 | if (!skb) { | |
752 | printk(KERN_WARNING "%s: Cannot allocate skb for monitor frame\n", | |
753 | dev->name); | |
bb6e093d | 754 | goto update_stats; |
98c4cae1 CH |
755 | } |
756 | ||
757 | /* Copy the 802.11 header to the skb */ | |
758 | memcpy(skb_put(skb, hdrlen), &(desc->frame_ctl), hdrlen); | |
459a98ed | 759 | skb_reset_mac_header(skb); |
98c4cae1 CH |
760 | |
761 | /* If any, copy the data from the card to the skb */ | |
762 | if (datalen > 0) { | |
763 | err = hermes_bap_pread(hw, IRQ_BAP, skb_put(skb, datalen), | |
764 | ALIGN(datalen, 2), rxfid, | |
765 | HERMES_802_2_OFFSET); | |
766 | if (err) { | |
767 | printk(KERN_ERR "%s: error %d reading monitor frame\n", | |
768 | dev->name, err); | |
769 | goto drop; | |
770 | } | |
771 | } | |
772 | ||
773 | skb->dev = dev; | |
774 | skb->ip_summed = CHECKSUM_NONE; | |
775 | skb->pkt_type = PACKET_OTHERHOST; | |
c1b4aa3f | 776 | skb->protocol = cpu_to_be16(ETH_P_802_2); |
6fe9deb1 | 777 | |
98c4cae1 CH |
778 | stats->rx_packets++; |
779 | stats->rx_bytes += skb->len; | |
780 | ||
781 | netif_rx(skb); | |
782 | return; | |
783 | ||
784 | drop: | |
785 | dev_kfree_skb_irq(skb); | |
786 | update_stats: | |
787 | stats->rx_errors++; | |
788 | stats->rx_dropped++; | |
789 | } | |
790 | ||
1da177e4 LT |
791 | static void __orinoco_ev_rx(struct net_device *dev, hermes_t *hw) |
792 | { | |
ea60a6aa | 793 | struct orinoco_private *priv = ndev_priv(dev); |
1da177e4 LT |
794 | struct net_device_stats *stats = &priv->stats; |
795 | struct iw_statistics *wstats = &priv->wstats; | |
796 | struct sk_buff *skb = NULL; | |
31afcef3 | 797 | u16 rxfid, status; |
8f2abf44 | 798 | int length; |
31afcef3 DK |
799 | struct hermes_rx_descriptor *desc; |
800 | struct orinoco_rx_data *rx_data; | |
1da177e4 LT |
801 | int err; |
802 | ||
31afcef3 DK |
803 | desc = kmalloc(sizeof(*desc), GFP_ATOMIC); |
804 | if (!desc) { | |
805 | printk(KERN_WARNING | |
806 | "%s: Can't allocate space for RX descriptor\n", | |
807 | dev->name); | |
808 | goto update_stats; | |
809 | } | |
810 | ||
1da177e4 LT |
811 | rxfid = hermes_read_regn(hw, RXFID); |
812 | ||
31afcef3 | 813 | err = hermes_bap_pread(hw, IRQ_BAP, desc, sizeof(*desc), |
1da177e4 LT |
814 | rxfid, 0); |
815 | if (err) { | |
816 | printk(KERN_ERR "%s: error %d reading Rx descriptor. " | |
817 | "Frame dropped.\n", dev->name, err); | |
98c4cae1 | 818 | goto update_stats; |
1da177e4 LT |
819 | } |
820 | ||
31afcef3 | 821 | status = le16_to_cpu(desc->status); |
1da177e4 | 822 | |
98c4cae1 CH |
823 | if (status & HERMES_RXSTAT_BADCRC) { |
824 | DEBUG(1, "%s: Bad CRC on Rx. Frame dropped.\n", | |
825 | dev->name); | |
826 | stats->rx_crc_errors++; | |
827 | goto update_stats; | |
1da177e4 LT |
828 | } |
829 | ||
98c4cae1 | 830 | /* Handle frames in monitor mode */ |
5217c571 | 831 | if (priv->iw_mode == NL80211_IFTYPE_MONITOR) { |
31afcef3 DK |
832 | orinoco_rx_monitor(dev, rxfid, desc); |
833 | goto out; | |
98c4cae1 | 834 | } |
1da177e4 | 835 | |
98c4cae1 CH |
836 | if (status & HERMES_RXSTAT_UNDECRYPTABLE) { |
837 | DEBUG(1, "%s: Undecryptable frame on Rx. Frame dropped.\n", | |
838 | dev->name); | |
839 | wstats->discard.code++; | |
840 | goto update_stats; | |
1da177e4 LT |
841 | } |
842 | ||
31afcef3 | 843 | length = le16_to_cpu(desc->data_len); |
8f2abf44 | 844 | |
1da177e4 LT |
845 | /* Sanity checks */ |
846 | if (length < 3) { /* No for even an 802.2 LLC header */ | |
847 | /* At least on Symbol firmware with PCF we get quite a | |
6fe9deb1 DK |
848 | lot of these legitimately - Poll frames with no |
849 | data. */ | |
31afcef3 | 850 | goto out; |
1da177e4 | 851 | } |
2c706002 | 852 | if (length > IEEE80211_MAX_DATA_LEN) { |
1da177e4 LT |
853 | printk(KERN_WARNING "%s: Oversized frame received (%d bytes)\n", |
854 | dev->name, length); | |
855 | stats->rx_length_errors++; | |
98c4cae1 | 856 | goto update_stats; |
1da177e4 LT |
857 | } |
858 | ||
23edcc41 DK |
859 | /* Payload size does not include Michael MIC. Increase payload |
860 | * size to read it together with the data. */ | |
861 | if (status & HERMES_RXSTAT_MIC) | |
862 | length += MICHAEL_MIC_LEN; | |
863 | ||
1da177e4 LT |
864 | /* We need space for the packet data itself, plus an ethernet |
865 | header, plus 2 bytes so we can align the IP header on a | |
866 | 32bit boundary, plus 1 byte so we can read in odd length | |
867 | packets from the card, which has an IO granularity of 16 | |
6fe9deb1 | 868 | bits */ |
1da177e4 LT |
869 | skb = dev_alloc_skb(length+ETH_HLEN+2+1); |
870 | if (!skb) { | |
871 | printk(KERN_WARNING "%s: Can't allocate skb for Rx\n", | |
872 | dev->name); | |
98c4cae1 | 873 | goto update_stats; |
1da177e4 LT |
874 | } |
875 | ||
8f2abf44 CH |
876 | /* We'll prepend the header, so reserve space for it. The worst |
877 | case is no decapsulation, when 802.3 header is prepended and | |
878 | nothing is removed. 2 is for aligning the IP header. */ | |
879 | skb_reserve(skb, ETH_HLEN + 2); | |
880 | ||
881 | err = hermes_bap_pread(hw, IRQ_BAP, skb_put(skb, length), | |
882 | ALIGN(length, 2), rxfid, | |
883 | HERMES_802_2_OFFSET); | |
884 | if (err) { | |
885 | printk(KERN_ERR "%s: error %d reading frame. " | |
886 | "Frame dropped.\n", dev->name, err); | |
8f2abf44 CH |
887 | goto drop; |
888 | } | |
1da177e4 | 889 | |
31afcef3 DK |
890 | /* Add desc and skb to rx queue */ |
891 | rx_data = kzalloc(sizeof(*rx_data), GFP_ATOMIC); | |
892 | if (!rx_data) { | |
893 | printk(KERN_WARNING "%s: Can't allocate RX packet\n", | |
894 | dev->name); | |
895 | goto drop; | |
896 | } | |
897 | rx_data->desc = desc; | |
898 | rx_data->skb = skb; | |
899 | list_add_tail(&rx_data->list, &priv->rx_list); | |
900 | tasklet_schedule(&priv->rx_tasklet); | |
901 | ||
902 | return; | |
903 | ||
904 | drop: | |
905 | dev_kfree_skb_irq(skb); | |
906 | update_stats: | |
907 | stats->rx_errors++; | |
908 | stats->rx_dropped++; | |
909 | out: | |
910 | kfree(desc); | |
911 | } | |
912 | ||
913 | static void orinoco_rx(struct net_device *dev, | |
914 | struct hermes_rx_descriptor *desc, | |
915 | struct sk_buff *skb) | |
916 | { | |
ea60a6aa | 917 | struct orinoco_private *priv = ndev_priv(dev); |
31afcef3 DK |
918 | struct net_device_stats *stats = &priv->stats; |
919 | u16 status, fc; | |
920 | int length; | |
921 | struct ethhdr *hdr; | |
922 | ||
923 | status = le16_to_cpu(desc->status); | |
924 | length = le16_to_cpu(desc->data_len); | |
925 | fc = le16_to_cpu(desc->frame_ctl); | |
926 | ||
23edcc41 DK |
927 | /* Calculate and check MIC */ |
928 | if (status & HERMES_RXSTAT_MIC) { | |
929 | int key_id = ((status & HERMES_RXSTAT_MIC_KEY_ID) >> | |
930 | HERMES_MIC_KEY_ID_SHIFT); | |
931 | u8 mic[MICHAEL_MIC_LEN]; | |
932 | u8 *rxmic; | |
933 | u8 *src = (fc & IEEE80211_FCTL_FROMDS) ? | |
934 | desc->addr3 : desc->addr2; | |
935 | ||
936 | /* Extract Michael MIC from payload */ | |
937 | rxmic = skb->data + skb->len - MICHAEL_MIC_LEN; | |
938 | ||
939 | skb_trim(skb, skb->len - MICHAEL_MIC_LEN); | |
940 | length -= MICHAEL_MIC_LEN; | |
941 | ||
4adb474b | 942 | orinoco_mic(priv->rx_tfm_mic, |
23edcc41 DK |
943 | priv->tkip_key[key_id].rx_mic, |
944 | desc->addr1, | |
945 | src, | |
946 | 0, /* priority or QoS? */ | |
947 | skb->data, | |
948 | skb->len, | |
949 | &mic[0]); | |
950 | ||
951 | if (memcmp(mic, rxmic, | |
952 | MICHAEL_MIC_LEN)) { | |
953 | union iwreq_data wrqu; | |
954 | struct iw_michaelmicfailure wxmic; | |
23edcc41 DK |
955 | |
956 | printk(KERN_WARNING "%s: " | |
e174961c | 957 | "Invalid Michael MIC in data frame from %pM, " |
23edcc41 | 958 | "using key %i\n", |
e174961c | 959 | dev->name, src, key_id); |
23edcc41 DK |
960 | |
961 | /* TODO: update stats */ | |
962 | ||
963 | /* Notify userspace */ | |
964 | memset(&wxmic, 0, sizeof(wxmic)); | |
965 | wxmic.flags = key_id & IW_MICFAILURE_KEY_ID; | |
966 | wxmic.flags |= (desc->addr1[0] & 1) ? | |
967 | IW_MICFAILURE_GROUP : IW_MICFAILURE_PAIRWISE; | |
968 | wxmic.src_addr.sa_family = ARPHRD_ETHER; | |
969 | memcpy(wxmic.src_addr.sa_data, src, ETH_ALEN); | |
970 | ||
971 | (void) orinoco_hw_get_tkip_iv(priv, key_id, | |
972 | &wxmic.tsc[0]); | |
973 | ||
974 | memset(&wrqu, 0, sizeof(wrqu)); | |
975 | wrqu.data.length = sizeof(wxmic); | |
976 | wireless_send_event(dev, IWEVMICHAELMICFAILURE, &wrqu, | |
977 | (char *) &wxmic); | |
978 | ||
979 | goto drop; | |
980 | } | |
981 | } | |
982 | ||
1da177e4 LT |
983 | /* Handle decapsulation |
984 | * In most cases, the firmware tell us about SNAP frames. | |
985 | * For some reason, the SNAP frames sent by LinkSys APs | |
986 | * are not properly recognised by most firmwares. | |
987 | * So, check ourselves */ | |
8f2abf44 CH |
988 | if (length >= ENCAPS_OVERHEAD && |
989 | (((status & HERMES_RXSTAT_MSGTYPE) == HERMES_RXSTAT_1042) || | |
990 | ((status & HERMES_RXSTAT_MSGTYPE) == HERMES_RXSTAT_TUNNEL) || | |
991 | is_ethersnap(skb->data))) { | |
1da177e4 LT |
992 | /* These indicate a SNAP within 802.2 LLC within |
993 | 802.11 frame which we'll need to de-encapsulate to | |
994 | the original EthernetII frame. */ | |
b2f30a0a DK |
995 | hdr = (struct ethhdr *)skb_push(skb, |
996 | ETH_HLEN - ENCAPS_OVERHEAD); | |
1da177e4 | 997 | } else { |
8f2abf44 CH |
998 | /* 802.3 frame - prepend 802.3 header as is */ |
999 | hdr = (struct ethhdr *)skb_push(skb, ETH_HLEN); | |
1000 | hdr->h_proto = htons(length); | |
1da177e4 | 1001 | } |
31afcef3 | 1002 | memcpy(hdr->h_dest, desc->addr1, ETH_ALEN); |
8f2abf44 | 1003 | if (fc & IEEE80211_FCTL_FROMDS) |
31afcef3 | 1004 | memcpy(hdr->h_source, desc->addr3, ETH_ALEN); |
8f2abf44 | 1005 | else |
31afcef3 | 1006 | memcpy(hdr->h_source, desc->addr2, ETH_ALEN); |
1da177e4 | 1007 | |
1da177e4 LT |
1008 | skb->protocol = eth_type_trans(skb, dev); |
1009 | skb->ip_summed = CHECKSUM_NONE; | |
8f2abf44 CH |
1010 | if (fc & IEEE80211_FCTL_TODS) |
1011 | skb->pkt_type = PACKET_OTHERHOST; | |
6fe9deb1 | 1012 | |
1da177e4 | 1013 | /* Process the wireless stats if needed */ |
31afcef3 | 1014 | orinoco_stat_gather(dev, skb, desc); |
1da177e4 LT |
1015 | |
1016 | /* Pass the packet to the networking stack */ | |
1017 | netif_rx(skb); | |
1018 | stats->rx_packets++; | |
1019 | stats->rx_bytes += length; | |
1020 | ||
1021 | return; | |
23edcc41 DK |
1022 | |
1023 | drop: | |
1024 | dev_kfree_skb(skb); | |
1025 | stats->rx_errors++; | |
1026 | stats->rx_dropped++; | |
31afcef3 | 1027 | } |
1da177e4 | 1028 | |
31afcef3 DK |
1029 | static void orinoco_rx_isr_tasklet(unsigned long data) |
1030 | { | |
5381956b DK |
1031 | struct orinoco_private *priv = (struct orinoco_private *) data; |
1032 | struct net_device *dev = priv->ndev; | |
31afcef3 DK |
1033 | struct orinoco_rx_data *rx_data, *temp; |
1034 | struct hermes_rx_descriptor *desc; | |
1035 | struct sk_buff *skb; | |
20953ad6 DK |
1036 | unsigned long flags; |
1037 | ||
1038 | /* orinoco_rx requires the driver lock, and we also need to | |
1039 | * protect priv->rx_list, so just hold the lock over the | |
1040 | * lot. | |
1041 | * | |
1042 | * If orinoco_lock fails, we've unplugged the card. In this | |
1043 | * case just abort. */ | |
1044 | if (orinoco_lock(priv, &flags) != 0) | |
1045 | return; | |
31afcef3 DK |
1046 | |
1047 | /* extract desc and skb from queue */ | |
1048 | list_for_each_entry_safe(rx_data, temp, &priv->rx_list, list) { | |
1049 | desc = rx_data->desc; | |
1050 | skb = rx_data->skb; | |
1051 | list_del(&rx_data->list); | |
1052 | kfree(rx_data); | |
1053 | ||
1054 | orinoco_rx(dev, desc, skb); | |
1055 | ||
1056 | kfree(desc); | |
1057 | } | |
20953ad6 DK |
1058 | |
1059 | orinoco_unlock(priv, &flags); | |
1da177e4 LT |
1060 | } |
1061 | ||
1062 | /********************************************************************/ | |
1063 | /* Rx path (info frames) */ | |
1064 | /********************************************************************/ | |
1065 | ||
1066 | static void print_linkstatus(struct net_device *dev, u16 status) | |
1067 | { | |
2131266d | 1068 | char *s; |
1da177e4 LT |
1069 | |
1070 | if (suppress_linkstatus) | |
1071 | return; | |
1072 | ||
1073 | switch (status) { | |
1074 | case HERMES_LINKSTATUS_NOT_CONNECTED: | |
1075 | s = "Not Connected"; | |
1076 | break; | |
1077 | case HERMES_LINKSTATUS_CONNECTED: | |
1078 | s = "Connected"; | |
1079 | break; | |
1080 | case HERMES_LINKSTATUS_DISCONNECTED: | |
1081 | s = "Disconnected"; | |
1082 | break; | |
1083 | case HERMES_LINKSTATUS_AP_CHANGE: | |
1084 | s = "AP Changed"; | |
1085 | break; | |
1086 | case HERMES_LINKSTATUS_AP_OUT_OF_RANGE: | |
1087 | s = "AP Out of Range"; | |
1088 | break; | |
1089 | case HERMES_LINKSTATUS_AP_IN_RANGE: | |
1090 | s = "AP In Range"; | |
1091 | break; | |
1092 | case HERMES_LINKSTATUS_ASSOC_FAILED: | |
1093 | s = "Association Failed"; | |
1094 | break; | |
1095 | default: | |
1096 | s = "UNKNOWN"; | |
1097 | } | |
6fe9deb1 | 1098 | |
11eaea41 | 1099 | printk(KERN_DEBUG "%s: New link status: %s (%04x)\n", |
1da177e4 LT |
1100 | dev->name, s, status); |
1101 | } | |
1102 | ||
16739b06 | 1103 | /* Search scan results for requested BSSID, join it if found */ |
c4028958 | 1104 | static void orinoco_join_ap(struct work_struct *work) |
16739b06 | 1105 | { |
c4028958 DH |
1106 | struct orinoco_private *priv = |
1107 | container_of(work, struct orinoco_private, join_work); | |
1108 | struct net_device *dev = priv->ndev; | |
16739b06 CH |
1109 | struct hermes *hw = &priv->hw; |
1110 | int err; | |
1111 | unsigned long flags; | |
1112 | struct join_req { | |
1113 | u8 bssid[ETH_ALEN]; | |
d133ae4c | 1114 | __le16 channel; |
16739b06 CH |
1115 | } __attribute__ ((packed)) req; |
1116 | const int atom_len = offsetof(struct prism2_scan_apinfo, atim); | |
c89cc225 | 1117 | struct prism2_scan_apinfo *atom = NULL; |
16739b06 | 1118 | int offset = 4; |
c89cc225 | 1119 | int found = 0; |
16739b06 CH |
1120 | u8 *buf; |
1121 | u16 len; | |
1122 | ||
1123 | /* Allocate buffer for scan results */ | |
1124 | buf = kmalloc(MAX_SCAN_LEN, GFP_KERNEL); | |
a94e8427 | 1125 | if (!buf) |
16739b06 CH |
1126 | return; |
1127 | ||
1128 | if (orinoco_lock(priv, &flags) != 0) | |
f3cb4cc1 | 1129 | goto fail_lock; |
16739b06 CH |
1130 | |
1131 | /* Sanity checks in case user changed something in the meantime */ | |
a94e8427 | 1132 | if (!priv->bssid_fixed) |
16739b06 CH |
1133 | goto out; |
1134 | ||
1135 | if (strlen(priv->desired_essid) == 0) | |
1136 | goto out; | |
1137 | ||
1138 | /* Read scan results from the firmware */ | |
1139 | err = hermes_read_ltv(hw, USER_BAP, | |
1140 | HERMES_RID_SCANRESULTSTABLE, | |
1141 | MAX_SCAN_LEN, &len, buf); | |
1142 | if (err) { | |
1143 | printk(KERN_ERR "%s: Cannot read scan results\n", | |
1144 | dev->name); | |
1145 | goto out; | |
1146 | } | |
1147 | ||
1148 | len = HERMES_RECLEN_TO_BYTES(len); | |
1149 | ||
1150 | /* Go through the scan results looking for the channel of the AP | |
1151 | * we were requested to join */ | |
1152 | for (; offset + atom_len <= len; offset += atom_len) { | |
1153 | atom = (struct prism2_scan_apinfo *) (buf + offset); | |
c89cc225 PR |
1154 | if (memcmp(&atom->bssid, priv->desired_bssid, ETH_ALEN) == 0) { |
1155 | found = 1; | |
1156 | break; | |
1157 | } | |
16739b06 CH |
1158 | } |
1159 | ||
a94e8427 | 1160 | if (!found) { |
c89cc225 PR |
1161 | DEBUG(1, "%s: Requested AP not found in scan results\n", |
1162 | dev->name); | |
1163 | goto out; | |
1164 | } | |
16739b06 | 1165 | |
16739b06 CH |
1166 | memcpy(req.bssid, priv->desired_bssid, ETH_ALEN); |
1167 | req.channel = atom->channel; /* both are little-endian */ | |
1168 | err = HERMES_WRITE_RECORD(hw, USER_BAP, HERMES_RID_CNFJOINREQUEST, | |
1169 | &req); | |
1170 | if (err) | |
1171 | printk(KERN_ERR "%s: Error issuing join request\n", dev->name); | |
1172 | ||
1173 | out: | |
16739b06 | 1174 | orinoco_unlock(priv, &flags); |
f3cb4cc1 PR |
1175 | |
1176 | fail_lock: | |
1177 | kfree(buf); | |
16739b06 CH |
1178 | } |
1179 | ||
95dd91fb | 1180 | /* Send new BSSID to userspace */ |
6cd90b1c | 1181 | static void orinoco_send_bssid_wevent(struct orinoco_private *priv) |
95dd91fb | 1182 | { |
c4028958 | 1183 | struct net_device *dev = priv->ndev; |
95dd91fb CH |
1184 | struct hermes *hw = &priv->hw; |
1185 | union iwreq_data wrqu; | |
1186 | int err; | |
95dd91fb | 1187 | |
499b702a | 1188 | err = hermes_read_ltv(hw, USER_BAP, HERMES_RID_CURRENTBSSID, |
95dd91fb CH |
1189 | ETH_ALEN, NULL, wrqu.ap_addr.sa_data); |
1190 | if (err != 0) | |
6cd90b1c | 1191 | return; |
95dd91fb CH |
1192 | |
1193 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; | |
1194 | ||
1195 | /* Send event to user space */ | |
1196 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); | |
6cd90b1c DK |
1197 | } |
1198 | ||
06009fda DK |
1199 | static void orinoco_send_assocreqie_wevent(struct orinoco_private *priv) |
1200 | { | |
1201 | struct net_device *dev = priv->ndev; | |
1202 | struct hermes *hw = &priv->hw; | |
1203 | union iwreq_data wrqu; | |
1204 | int err; | |
1205 | u8 buf[88]; | |
1206 | u8 *ie; | |
1207 | ||
1208 | if (!priv->has_wpa) | |
1209 | return; | |
1210 | ||
499b702a | 1211 | err = hermes_read_ltv(hw, USER_BAP, HERMES_RID_CURRENT_ASSOC_REQ_INFO, |
06009fda DK |
1212 | sizeof(buf), NULL, &buf); |
1213 | if (err != 0) | |
1214 | return; | |
1215 | ||
1216 | ie = orinoco_get_wpa_ie(buf, sizeof(buf)); | |
1217 | if (ie) { | |
1218 | int rem = sizeof(buf) - (ie - &buf[0]); | |
1219 | wrqu.data.length = ie[1] + 2; | |
1220 | if (wrqu.data.length > rem) | |
1221 | wrqu.data.length = rem; | |
1222 | ||
1223 | if (wrqu.data.length) | |
1224 | /* Send event to user space */ | |
1225 | wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, ie); | |
1226 | } | |
1227 | } | |
1228 | ||
1229 | static void orinoco_send_assocrespie_wevent(struct orinoco_private *priv) | |
1230 | { | |
1231 | struct net_device *dev = priv->ndev; | |
1232 | struct hermes *hw = &priv->hw; | |
1233 | union iwreq_data wrqu; | |
1234 | int err; | |
1235 | u8 buf[88]; /* TODO: verify max size or IW_GENERIC_IE_MAX */ | |
1236 | u8 *ie; | |
1237 | ||
1238 | if (!priv->has_wpa) | |
1239 | return; | |
1240 | ||
499b702a | 1241 | err = hermes_read_ltv(hw, USER_BAP, HERMES_RID_CURRENT_ASSOC_RESP_INFO, |
06009fda DK |
1242 | sizeof(buf), NULL, &buf); |
1243 | if (err != 0) | |
1244 | return; | |
1245 | ||
1246 | ie = orinoco_get_wpa_ie(buf, sizeof(buf)); | |
1247 | if (ie) { | |
1248 | int rem = sizeof(buf) - (ie - &buf[0]); | |
1249 | wrqu.data.length = ie[1] + 2; | |
1250 | if (wrqu.data.length > rem) | |
1251 | wrqu.data.length = rem; | |
1252 | ||
1253 | if (wrqu.data.length) | |
1254 | /* Send event to user space */ | |
1255 | wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, ie); | |
1256 | } | |
1257 | } | |
1258 | ||
6cd90b1c DK |
1259 | static void orinoco_send_wevents(struct work_struct *work) |
1260 | { | |
1261 | struct orinoco_private *priv = | |
1262 | container_of(work, struct orinoco_private, wevent_work); | |
1263 | unsigned long flags; | |
1264 | ||
1265 | if (orinoco_lock(priv, &flags) != 0) | |
1266 | return; | |
1267 | ||
06009fda DK |
1268 | orinoco_send_assocreqie_wevent(priv); |
1269 | orinoco_send_assocrespie_wevent(priv); | |
6cd90b1c | 1270 | orinoco_send_bssid_wevent(priv); |
8aeabc37 | 1271 | |
95dd91fb CH |
1272 | orinoco_unlock(priv, &flags); |
1273 | } | |
1274 | ||
c63cdbe8 DK |
1275 | static void qbuf_scan(struct orinoco_private *priv, void *buf, |
1276 | int len, int type) | |
1277 | { | |
1278 | struct orinoco_scan_data *sd; | |
1279 | unsigned long flags; | |
1280 | ||
1281 | sd = kmalloc(sizeof(*sd), GFP_ATOMIC); | |
1282 | sd->buf = buf; | |
1283 | sd->len = len; | |
1284 | sd->type = type; | |
1285 | ||
1286 | spin_lock_irqsave(&priv->scan_lock, flags); | |
1287 | list_add_tail(&sd->list, &priv->scan_list); | |
1288 | spin_unlock_irqrestore(&priv->scan_lock, flags); | |
1289 | ||
1290 | schedule_work(&priv->process_scan); | |
1291 | } | |
1292 | ||
1293 | static void qabort_scan(struct orinoco_private *priv) | |
1294 | { | |
1295 | struct orinoco_scan_data *sd; | |
1296 | unsigned long flags; | |
1297 | ||
1298 | sd = kmalloc(sizeof(*sd), GFP_ATOMIC); | |
1299 | sd->len = -1; /* Abort */ | |
1300 | ||
1301 | spin_lock_irqsave(&priv->scan_lock, flags); | |
1302 | list_add_tail(&sd->list, &priv->scan_list); | |
1303 | spin_unlock_irqrestore(&priv->scan_lock, flags); | |
1304 | ||
1305 | schedule_work(&priv->process_scan); | |
1306 | } | |
1307 | ||
1308 | static void orinoco_process_scan_results(struct work_struct *work) | |
1309 | { | |
1310 | struct orinoco_private *priv = | |
1311 | container_of(work, struct orinoco_private, process_scan); | |
1312 | struct orinoco_scan_data *sd, *temp; | |
1313 | unsigned long flags; | |
1314 | void *buf; | |
1315 | int len; | |
1316 | int type; | |
1317 | ||
1318 | spin_lock_irqsave(&priv->scan_lock, flags); | |
1319 | list_for_each_entry_safe(sd, temp, &priv->scan_list, list) { | |
1320 | spin_unlock_irqrestore(&priv->scan_lock, flags); | |
1321 | ||
1322 | buf = sd->buf; | |
1323 | len = sd->len; | |
1324 | type = sd->type; | |
1325 | ||
1326 | list_del(&sd->list); | |
1327 | kfree(sd); | |
1328 | ||
1329 | if (len > 0) { | |
1330 | if (type == HERMES_INQ_CHANNELINFO) | |
1331 | orinoco_add_extscan_result(priv, buf, len); | |
1332 | else | |
1333 | orinoco_add_hostscan_results(priv, buf, len); | |
1334 | ||
1335 | kfree(buf); | |
1336 | } else if (priv->scan_request) { | |
1337 | /* Either abort or complete the scan */ | |
1338 | cfg80211_scan_done(priv->scan_request, (len < 0)); | |
1339 | priv->scan_request = NULL; | |
1340 | } | |
1341 | ||
1342 | spin_lock_irqsave(&priv->scan_lock, flags); | |
1343 | } | |
1344 | spin_unlock_irqrestore(&priv->scan_lock, flags); | |
1345 | } | |
1346 | ||
1da177e4 LT |
1347 | static void __orinoco_ev_info(struct net_device *dev, hermes_t *hw) |
1348 | { | |
ea60a6aa | 1349 | struct orinoco_private *priv = ndev_priv(dev); |
1da177e4 LT |
1350 | u16 infofid; |
1351 | struct { | |
d133ae4c PR |
1352 | __le16 len; |
1353 | __le16 type; | |
1da177e4 LT |
1354 | } __attribute__ ((packed)) info; |
1355 | int len, type; | |
1356 | int err; | |
1357 | ||
1358 | /* This is an answer to an INQUIRE command that we did earlier, | |
1359 | * or an information "event" generated by the card | |
1360 | * The controller return to us a pseudo frame containing | |
1361 | * the information in question - Jean II */ | |
1362 | infofid = hermes_read_regn(hw, INFOFID); | |
1363 | ||
1364 | /* Read the info frame header - don't try too hard */ | |
1365 | err = hermes_bap_pread(hw, IRQ_BAP, &info, sizeof(info), | |
1366 | infofid, 0); | |
1367 | if (err) { | |
1368 | printk(KERN_ERR "%s: error %d reading info frame. " | |
1369 | "Frame dropped.\n", dev->name, err); | |
1370 | return; | |
1371 | } | |
6fe9deb1 | 1372 | |
1da177e4 LT |
1373 | len = HERMES_RECLEN_TO_BYTES(le16_to_cpu(info.len)); |
1374 | type = le16_to_cpu(info.type); | |
1375 | ||
1376 | switch (type) { | |
1377 | case HERMES_INQ_TALLIES: { | |
1378 | struct hermes_tallies_frame tallies; | |
1379 | struct iw_statistics *wstats = &priv->wstats; | |
6fe9deb1 | 1380 | |
1da177e4 LT |
1381 | if (len > sizeof(tallies)) { |
1382 | printk(KERN_WARNING "%s: Tallies frame too long (%d bytes)\n", | |
1383 | dev->name, len); | |
1384 | len = sizeof(tallies); | |
1385 | } | |
6fe9deb1 | 1386 | |
84d8a2fb CH |
1387 | err = hermes_bap_pread(hw, IRQ_BAP, &tallies, len, |
1388 | infofid, sizeof(info)); | |
1389 | if (err) | |
1390 | break; | |
6fe9deb1 | 1391 | |
1da177e4 LT |
1392 | /* Increment our various counters */ |
1393 | /* wstats->discard.nwid - no wrong BSSID stuff */ | |
1394 | wstats->discard.code += | |
1395 | le16_to_cpu(tallies.RxWEPUndecryptable); | |
6fe9deb1 | 1396 | if (len == sizeof(tallies)) |
1da177e4 LT |
1397 | wstats->discard.code += |
1398 | le16_to_cpu(tallies.RxDiscards_WEPICVError) + | |
1399 | le16_to_cpu(tallies.RxDiscards_WEPExcluded); | |
1400 | wstats->discard.misc += | |
1401 | le16_to_cpu(tallies.TxDiscardsWrongSA); | |
1402 | wstats->discard.fragment += | |
1403 | le16_to_cpu(tallies.RxMsgInBadMsgFragments); | |
1404 | wstats->discard.retries += | |
1405 | le16_to_cpu(tallies.TxRetryLimitExceeded); | |
1406 | /* wstats->miss.beacon - no match */ | |
1407 | } | |
1408 | break; | |
1409 | case HERMES_INQ_LINKSTATUS: { | |
1410 | struct hermes_linkstatus linkstatus; | |
1411 | u16 newstatus; | |
1412 | int connected; | |
1413 | ||
5217c571 | 1414 | if (priv->iw_mode == NL80211_IFTYPE_MONITOR) |
8f2abf44 CH |
1415 | break; |
1416 | ||
1da177e4 LT |
1417 | if (len != sizeof(linkstatus)) { |
1418 | printk(KERN_WARNING "%s: Unexpected size for linkstatus frame (%d bytes)\n", | |
1419 | dev->name, len); | |
1420 | break; | |
1421 | } | |
1422 | ||
84d8a2fb CH |
1423 | err = hermes_bap_pread(hw, IRQ_BAP, &linkstatus, len, |
1424 | infofid, sizeof(info)); | |
1425 | if (err) | |
1426 | break; | |
1da177e4 LT |
1427 | newstatus = le16_to_cpu(linkstatus.linkstatus); |
1428 | ||
95dd91fb CH |
1429 | /* Symbol firmware uses "out of range" to signal that |
1430 | * the hostscan frame can be requested. */ | |
1431 | if (newstatus == HERMES_LINKSTATUS_AP_OUT_OF_RANGE && | |
1432 | priv->firmware_type == FIRMWARE_TYPE_SYMBOL && | |
c63cdbe8 | 1433 | priv->has_hostscan && priv->scan_request) { |
95dd91fb CH |
1434 | hermes_inquire(hw, HERMES_INQ_HOSTSCAN_SYMBOL); |
1435 | break; | |
1436 | } | |
1437 | ||
1da177e4 LT |
1438 | connected = (newstatus == HERMES_LINKSTATUS_CONNECTED) |
1439 | || (newstatus == HERMES_LINKSTATUS_AP_CHANGE) | |
1440 | || (newstatus == HERMES_LINKSTATUS_AP_IN_RANGE); | |
1441 | ||
1442 | if (connected) | |
1443 | netif_carrier_on(dev); | |
7bb7c3a3 | 1444 | else if (!ignore_disconnect) |
1da177e4 LT |
1445 | netif_carrier_off(dev); |
1446 | ||
95dd91fb CH |
1447 | if (newstatus != priv->last_linkstatus) { |
1448 | priv->last_linkstatus = newstatus; | |
1da177e4 | 1449 | print_linkstatus(dev, newstatus); |
95dd91fb CH |
1450 | /* The info frame contains only one word which is the |
1451 | * status (see hermes.h). The status is pretty boring | |
1452 | * in itself, that's why we export the new BSSID... | |
1453 | * Jean II */ | |
1454 | schedule_work(&priv->wevent_work); | |
1455 | } | |
1456 | } | |
1457 | break; | |
1458 | case HERMES_INQ_SCAN: | |
c63cdbe8 | 1459 | if (!priv->scan_request && priv->bssid_fixed && |
95dd91fb CH |
1460 | priv->firmware_type == FIRMWARE_TYPE_INTERSIL) { |
1461 | schedule_work(&priv->join_work); | |
1462 | break; | |
1463 | } | |
1464 | /* fall through */ | |
1465 | case HERMES_INQ_HOSTSCAN: | |
1466 | case HERMES_INQ_HOSTSCAN_SYMBOL: { | |
1467 | /* Result of a scanning. Contains information about | |
1468 | * cells in the vicinity - Jean II */ | |
95dd91fb CH |
1469 | unsigned char *buf; |
1470 | ||
1471 | /* Sanity check */ | |
1472 | if (len > 4096) { | |
1473 | printk(KERN_WARNING "%s: Scan results too large (%d bytes)\n", | |
1474 | dev->name, len); | |
c63cdbe8 | 1475 | qabort_scan(priv); |
95dd91fb CH |
1476 | break; |
1477 | } | |
1478 | ||
95dd91fb CH |
1479 | /* Allocate buffer for results */ |
1480 | buf = kmalloc(len, GFP_ATOMIC); | |
c63cdbe8 | 1481 | if (buf == NULL) { |
95dd91fb | 1482 | /* No memory, so can't printk()... */ |
c63cdbe8 | 1483 | qabort_scan(priv); |
95dd91fb | 1484 | break; |
c63cdbe8 | 1485 | } |
95dd91fb CH |
1486 | |
1487 | /* Read scan data */ | |
1488 | err = hermes_bap_pread(hw, IRQ_BAP, (void *) buf, len, | |
1489 | infofid, sizeof(info)); | |
708218b0 PR |
1490 | if (err) { |
1491 | kfree(buf); | |
c63cdbe8 | 1492 | qabort_scan(priv); |
95dd91fb | 1493 | break; |
708218b0 | 1494 | } |
1da177e4 | 1495 | |
95dd91fb CH |
1496 | #ifdef ORINOCO_DEBUG |
1497 | { | |
1498 | int i; | |
1499 | printk(KERN_DEBUG "Scan result [%02X", buf[0]); | |
a94e8427 | 1500 | for (i = 1; i < (len * 2); i++) |
95dd91fb CH |
1501 | printk(":%02X", buf[i]); |
1502 | printk("]\n"); | |
1503 | } | |
1504 | #endif /* ORINOCO_DEBUG */ | |
1505 | ||
c63cdbe8 | 1506 | qbuf_scan(priv, buf, len, type); |
1da177e4 LT |
1507 | } |
1508 | break; | |
01632fa4 DK |
1509 | case HERMES_INQ_CHANNELINFO: |
1510 | { | |
1511 | struct agere_ext_scan_info *bss; | |
1512 | ||
c63cdbe8 | 1513 | if (!priv->scan_request) { |
01632fa4 DK |
1514 | printk(KERN_DEBUG "%s: Got chaninfo without scan, " |
1515 | "len=%d\n", dev->name, len); | |
1516 | break; | |
1517 | } | |
1518 | ||
1519 | /* An empty result indicates that the scan is complete */ | |
1520 | if (len == 0) { | |
c63cdbe8 | 1521 | qbuf_scan(priv, NULL, len, type); |
01632fa4 DK |
1522 | break; |
1523 | } | |
1524 | ||
1525 | /* Sanity check */ | |
c63cdbe8 | 1526 | else if (len < (offsetof(struct agere_ext_scan_info, |
01632fa4 DK |
1527 | data) + 2)) { |
1528 | /* Drop this result now so we don't have to | |
1529 | * keep checking later */ | |
1530 | printk(KERN_WARNING | |
1531 | "%s: Ext scan results too short (%d bytes)\n", | |
1532 | dev->name, len); | |
1533 | break; | |
1534 | } | |
1535 | ||
c63cdbe8 | 1536 | bss = kmalloc(len, GFP_ATOMIC); |
01632fa4 DK |
1537 | if (bss == NULL) |
1538 | break; | |
1539 | ||
1540 | /* Read scan data */ | |
1541 | err = hermes_bap_pread(hw, IRQ_BAP, (void *) bss, len, | |
1542 | infofid, sizeof(info)); | |
c63cdbe8 | 1543 | if (err) |
01632fa4 | 1544 | kfree(bss); |
c63cdbe8 DK |
1545 | else |
1546 | qbuf_scan(priv, bss, len, type); | |
01632fa4 | 1547 | |
01632fa4 DK |
1548 | break; |
1549 | } | |
95dd91fb CH |
1550 | case HERMES_INQ_SEC_STAT_AGERE: |
1551 | /* Security status (Agere specific) */ | |
1552 | /* Ignore this frame for now */ | |
1553 | if (priv->firmware_type == FIRMWARE_TYPE_AGERE) | |
1554 | break; | |
1555 | /* fall through */ | |
1da177e4 LT |
1556 | default: |
1557 | printk(KERN_DEBUG "%s: Unknown information frame received: " | |
1558 | "type 0x%04x, length %d\n", dev->name, type, len); | |
1559 | /* We don't actually do anything about it */ | |
1560 | break; | |
1561 | } | |
c63cdbe8 DK |
1562 | |
1563 | return; | |
1da177e4 LT |
1564 | } |
1565 | ||
1566 | static void __orinoco_ev_infdrop(struct net_device *dev, hermes_t *hw) | |
1567 | { | |
1568 | if (net_ratelimit()) | |
1569 | printk(KERN_DEBUG "%s: Information frame lost.\n", dev->name); | |
1570 | } | |
1571 | ||
1572 | /********************************************************************/ | |
1573 | /* Internal hardware control routines */ | |
1574 | /********************************************************************/ | |
1575 | ||
6415f7df | 1576 | static int __orinoco_up(struct orinoco_private *priv) |
1da177e4 | 1577 | { |
a2608362 | 1578 | struct net_device *dev = priv->ndev; |
1da177e4 LT |
1579 | struct hermes *hw = &priv->hw; |
1580 | int err; | |
1581 | ||
84d8a2fb CH |
1582 | netif_carrier_off(dev); /* just to make sure */ |
1583 | ||
721aa2f7 | 1584 | err = __orinoco_commit(priv); |
1da177e4 LT |
1585 | if (err) { |
1586 | printk(KERN_ERR "%s: Error %d configuring card\n", | |
1587 | dev->name, err); | |
1588 | return err; | |
1589 | } | |
1590 | ||
1591 | /* Fire things up again */ | |
1592 | hermes_set_irqmask(hw, ORINOCO_INTEN); | |
1593 | err = hermes_enable_port(hw, 0); | |
1594 | if (err) { | |
1595 | printk(KERN_ERR "%s: Error %d enabling MAC port\n", | |
1596 | dev->name, err); | |
1597 | return err; | |
1598 | } | |
1599 | ||
1600 | netif_start_queue(dev); | |
1601 | ||
1602 | return 0; | |
1603 | } | |
1604 | ||
6415f7df | 1605 | static int __orinoco_down(struct orinoco_private *priv) |
1da177e4 | 1606 | { |
a2608362 | 1607 | struct net_device *dev = priv->ndev; |
1da177e4 LT |
1608 | struct hermes *hw = &priv->hw; |
1609 | int err; | |
1610 | ||
1611 | netif_stop_queue(dev); | |
1612 | ||
a94e8427 DK |
1613 | if (!priv->hw_unavailable) { |
1614 | if (!priv->broken_disableport) { | |
1da177e4 LT |
1615 | err = hermes_disable_port(hw, 0); |
1616 | if (err) { | |
1617 | /* Some firmwares (e.g. Intersil 1.3.x) seem | |
1618 | * to have problems disabling the port, oh | |
1619 | * well, too bad. */ | |
1620 | printk(KERN_WARNING "%s: Error %d disabling MAC port\n", | |
1621 | dev->name, err); | |
1622 | priv->broken_disableport = 1; | |
1623 | } | |
1624 | } | |
1625 | hermes_set_irqmask(hw, 0); | |
1626 | hermes_write_regn(hw, EVACK, 0xffff); | |
1627 | } | |
6fe9deb1 | 1628 | |
1da177e4 LT |
1629 | /* firmware will have to reassociate */ |
1630 | netif_carrier_off(dev); | |
1631 | priv->last_linkstatus = 0xffff; | |
1632 | ||
1633 | return 0; | |
1634 | } | |
1635 | ||
6415f7df | 1636 | static int orinoco_reinit_firmware(struct orinoco_private *priv) |
37a6c611 | 1637 | { |
37a6c611 PR |
1638 | struct hermes *hw = &priv->hw; |
1639 | int err; | |
1640 | ||
1641 | err = hermes_init(hw); | |
0df6cbb7 AB |
1642 | if (priv->do_fw_download && !err) { |
1643 | err = orinoco_download(priv); | |
1644 | if (err) | |
1645 | priv->do_fw_download = 0; | |
1646 | } | |
37a6c611 | 1647 | if (!err) |
42a51b93 | 1648 | err = orinoco_hw_allocate_fid(priv); |
37a6c611 PR |
1649 | |
1650 | return err; | |
1651 | } | |
1652 | ||
721aa2f7 | 1653 | static int |
5865d015 DK |
1654 | __orinoco_set_multicast_list(struct net_device *dev) |
1655 | { | |
ea60a6aa | 1656 | struct orinoco_private *priv = ndev_priv(dev); |
5865d015 DK |
1657 | int err = 0; |
1658 | int promisc, mc_count; | |
1659 | ||
1660 | /* The Hermes doesn't seem to have an allmulti mode, so we go | |
1661 | * into promiscuous mode and let the upper levels deal. */ | |
1662 | if ((dev->flags & IFF_PROMISC) || (dev->flags & IFF_ALLMULTI) || | |
1663 | (dev->mc_count > MAX_MULTICAST(priv))) { | |
1664 | promisc = 1; | |
1665 | mc_count = 0; | |
1666 | } else { | |
1667 | promisc = 0; | |
1668 | mc_count = dev->mc_count; | |
1669 | } | |
1670 | ||
1671 | err = __orinoco_hw_set_multicast_list(priv, dev->mc_list, mc_count, | |
1672 | promisc); | |
721aa2f7 DK |
1673 | |
1674 | return err; | |
1da177e4 LT |
1675 | } |
1676 | ||
1da177e4 LT |
1677 | /* This must be called from user context, without locks held - use |
1678 | * schedule_work() */ | |
cb1576a8 | 1679 | void orinoco_reset(struct work_struct *work) |
1da177e4 | 1680 | { |
c4028958 DH |
1681 | struct orinoco_private *priv = |
1682 | container_of(work, struct orinoco_private, reset_work); | |
1683 | struct net_device *dev = priv->ndev; | |
1da177e4 | 1684 | struct hermes *hw = &priv->hw; |
8551cb98 | 1685 | int err; |
1da177e4 LT |
1686 | unsigned long flags; |
1687 | ||
1688 | if (orinoco_lock(priv, &flags) != 0) | |
1689 | /* When the hardware becomes available again, whatever | |
1690 | * detects that is responsible for re-initializing | |
1691 | * it. So no need for anything further */ | |
1692 | return; | |
1693 | ||
1694 | netif_stop_queue(dev); | |
1695 | ||
1696 | /* Shut off interrupts. Depending on what state the hardware | |
1697 | * is in, this might not work, but we'll try anyway */ | |
1698 | hermes_set_irqmask(hw, 0); | |
1699 | hermes_write_regn(hw, EVACK, 0xffff); | |
1700 | ||
1701 | priv->hw_unavailable++; | |
1702 | priv->last_linkstatus = 0xffff; /* firmware will have to reassociate */ | |
1703 | netif_carrier_off(dev); | |
1704 | ||
1705 | orinoco_unlock(priv, &flags); | |
1706 | ||
c63cdbe8 DK |
1707 | /* Scanning support: Notify scan cancellation */ |
1708 | if (priv->scan_request) { | |
1709 | cfg80211_scan_done(priv->scan_request, 1); | |
1710 | priv->scan_request = NULL; | |
1711 | } | |
95dd91fb | 1712 | |
8551cb98 | 1713 | if (priv->hard_reset) { |
1da177e4 | 1714 | err = (*priv->hard_reset)(priv); |
8551cb98 CH |
1715 | if (err) { |
1716 | printk(KERN_ERR "%s: orinoco_reset: Error %d " | |
1717 | "performing hard reset\n", dev->name, err); | |
1718 | goto disable; | |
1719 | } | |
1da177e4 LT |
1720 | } |
1721 | ||
a2608362 | 1722 | err = orinoco_reinit_firmware(priv); |
1da177e4 LT |
1723 | if (err) { |
1724 | printk(KERN_ERR "%s: orinoco_reset: Error %d re-initializing firmware\n", | |
1725 | dev->name, err); | |
8551cb98 | 1726 | goto disable; |
1da177e4 LT |
1727 | } |
1728 | ||
b2f30a0a DK |
1729 | /* This has to be called from user context */ |
1730 | spin_lock_irq(&priv->lock); | |
1da177e4 LT |
1731 | |
1732 | priv->hw_unavailable--; | |
1733 | ||
1734 | /* priv->open or priv->hw_unavailable might have changed while | |
1735 | * we dropped the lock */ | |
a94e8427 | 1736 | if (priv->open && (!priv->hw_unavailable)) { |
a2608362 | 1737 | err = __orinoco_up(priv); |
1da177e4 LT |
1738 | if (err) { |
1739 | printk(KERN_ERR "%s: orinoco_reset: Error %d reenabling card\n", | |
1740 | dev->name, err); | |
1741 | } else | |
1742 | dev->trans_start = jiffies; | |
1743 | } | |
1744 | ||
1745 | spin_unlock_irq(&priv->lock); | |
1746 | ||
1747 | return; | |
8551cb98 CH |
1748 | disable: |
1749 | hermes_set_irqmask(hw, 0); | |
1750 | netif_device_detach(dev); | |
1751 | printk(KERN_ERR "%s: Device has been disabled!\n", dev->name); | |
1da177e4 LT |
1752 | } |
1753 | ||
721aa2f7 DK |
1754 | static int __orinoco_commit(struct orinoco_private *priv) |
1755 | { | |
1756 | struct net_device *dev = priv->ndev; | |
1757 | int err = 0; | |
1758 | ||
1759 | err = orinoco_hw_program_rids(priv); | |
1760 | ||
1761 | /* FIXME: what about netif_tx_lock */ | |
1762 | (void) __orinoco_set_multicast_list(dev); | |
1763 | ||
1764 | return err; | |
1765 | } | |
1766 | ||
1767 | /* Ensures configuration changes are applied. May result in a reset. | |
1768 | * The caller should hold priv->lock | |
1769 | */ | |
1770 | int orinoco_commit(struct orinoco_private *priv) | |
1771 | { | |
1772 | struct net_device *dev = priv->ndev; | |
1773 | hermes_t *hw = &priv->hw; | |
1774 | int err; | |
1775 | ||
1776 | if (priv->broken_disableport) { | |
1777 | schedule_work(&priv->reset_work); | |
1778 | return 0; | |
1779 | } | |
1780 | ||
1781 | err = hermes_disable_port(hw, 0); | |
1782 | if (err) { | |
1783 | printk(KERN_WARNING "%s: Unable to disable port " | |
1784 | "while reconfiguring card\n", dev->name); | |
1785 | priv->broken_disableport = 1; | |
1786 | goto out; | |
1787 | } | |
1788 | ||
1789 | err = __orinoco_commit(priv); | |
1790 | if (err) { | |
1791 | printk(KERN_WARNING "%s: Unable to reconfigure card\n", | |
1792 | dev->name); | |
1793 | goto out; | |
1794 | } | |
1795 | ||
1796 | err = hermes_enable_port(hw, 0); | |
1797 | if (err) { | |
1798 | printk(KERN_WARNING "%s: Unable to enable port while reconfiguring card\n", | |
1799 | dev->name); | |
1800 | goto out; | |
1801 | } | |
1802 | ||
1803 | out: | |
1804 | if (err) { | |
1805 | printk(KERN_WARNING "%s: Resetting instead...\n", dev->name); | |
1806 | schedule_work(&priv->reset_work); | |
1807 | err = 0; | |
1808 | } | |
1809 | return err; | |
1810 | } | |
1811 | ||
1da177e4 LT |
1812 | /********************************************************************/ |
1813 | /* Interrupt handler */ | |
1814 | /********************************************************************/ | |
1815 | ||
1816 | static void __orinoco_ev_tick(struct net_device *dev, hermes_t *hw) | |
1817 | { | |
1818 | printk(KERN_DEBUG "%s: TICK\n", dev->name); | |
1819 | } | |
1820 | ||
1821 | static void __orinoco_ev_wterr(struct net_device *dev, hermes_t *hw) | |
1822 | { | |
1823 | /* This seems to happen a fair bit under load, but ignoring it | |
1824 | seems to work fine...*/ | |
1825 | printk(KERN_DEBUG "%s: MAC controller error (WTERR). Ignoring.\n", | |
1826 | dev->name); | |
1827 | } | |
1828 | ||
7d12e780 | 1829 | irqreturn_t orinoco_interrupt(int irq, void *dev_id) |
1da177e4 | 1830 | { |
a2608362 DK |
1831 | struct orinoco_private *priv = dev_id; |
1832 | struct net_device *dev = priv->ndev; | |
1da177e4 LT |
1833 | hermes_t *hw = &priv->hw; |
1834 | int count = MAX_IRQLOOPS_PER_IRQ; | |
1835 | u16 evstat, events; | |
2131266d DK |
1836 | /* These are used to detect a runaway interrupt situation. |
1837 | * | |
1838 | * If we get more than MAX_IRQLOOPS_PER_JIFFY iterations in a jiffy, | |
1839 | * we panic and shut down the hardware | |
1840 | */ | |
1841 | /* jiffies value the last time we were called */ | |
1842 | static int last_irq_jiffy; /* = 0 */ | |
1843 | static int loops_this_jiffy; /* = 0 */ | |
1da177e4 LT |
1844 | unsigned long flags; |
1845 | ||
1846 | if (orinoco_lock(priv, &flags) != 0) { | |
1847 | /* If hw is unavailable - we don't know if the irq was | |
1848 | * for us or not */ | |
1849 | return IRQ_HANDLED; | |
1850 | } | |
1851 | ||
1852 | evstat = hermes_read_regn(hw, EVSTAT); | |
1853 | events = evstat & hw->inten; | |
a94e8427 | 1854 | if (!events) { |
1da177e4 LT |
1855 | orinoco_unlock(priv, &flags); |
1856 | return IRQ_NONE; | |
1857 | } | |
6fe9deb1 | 1858 | |
1da177e4 LT |
1859 | if (jiffies != last_irq_jiffy) |
1860 | loops_this_jiffy = 0; | |
1861 | last_irq_jiffy = jiffies; | |
1862 | ||
1863 | while (events && count--) { | |
1864 | if (++loops_this_jiffy > MAX_IRQLOOPS_PER_JIFFY) { | |
1865 | printk(KERN_WARNING "%s: IRQ handler is looping too " | |
1866 | "much! Resetting.\n", dev->name); | |
1867 | /* Disable interrupts for now */ | |
1868 | hermes_set_irqmask(hw, 0); | |
1869 | schedule_work(&priv->reset_work); | |
1870 | break; | |
1871 | } | |
1872 | ||
1873 | /* Check the card hasn't been removed */ | |
a94e8427 | 1874 | if (!hermes_present(hw)) { |
1da177e4 LT |
1875 | DEBUG(0, "orinoco_interrupt(): card removed\n"); |
1876 | break; | |
1877 | } | |
1878 | ||
1879 | if (events & HERMES_EV_TICK) | |
1880 | __orinoco_ev_tick(dev, hw); | |
1881 | if (events & HERMES_EV_WTERR) | |
1882 | __orinoco_ev_wterr(dev, hw); | |
1883 | if (events & HERMES_EV_INFDROP) | |
1884 | __orinoco_ev_infdrop(dev, hw); | |
1885 | if (events & HERMES_EV_INFO) | |
1886 | __orinoco_ev_info(dev, hw); | |
1887 | if (events & HERMES_EV_RX) | |
1888 | __orinoco_ev_rx(dev, hw); | |
1889 | if (events & HERMES_EV_TXEXC) | |
1890 | __orinoco_ev_txexc(dev, hw); | |
1891 | if (events & HERMES_EV_TX) | |
1892 | __orinoco_ev_tx(dev, hw); | |
1893 | if (events & HERMES_EV_ALLOC) | |
1894 | __orinoco_ev_alloc(dev, hw); | |
6fe9deb1 | 1895 | |
84d8a2fb | 1896 | hermes_write_regn(hw, EVACK, evstat); |
1da177e4 LT |
1897 | |
1898 | evstat = hermes_read_regn(hw, EVSTAT); | |
1899 | events = evstat & hw->inten; | |
1900 | }; | |
1901 | ||
1902 | orinoco_unlock(priv, &flags); | |
1903 | return IRQ_HANDLED; | |
1904 | } | |
2131266d | 1905 | EXPORT_SYMBOL(orinoco_interrupt); |
1da177e4 | 1906 | |
39d1ffee DK |
1907 | /********************************************************************/ |
1908 | /* Power management */ | |
1909 | /********************************************************************/ | |
1910 | #if defined(CONFIG_PM_SLEEP) && !defined(CONFIG_HERMES_CACHE_FW_ON_INIT) | |
1911 | static int orinoco_pm_notifier(struct notifier_block *notifier, | |
1912 | unsigned long pm_event, | |
1913 | void *unused) | |
1914 | { | |
1915 | struct orinoco_private *priv = container_of(notifier, | |
1916 | struct orinoco_private, | |
1917 | pm_notifier); | |
1918 | ||
1919 | /* All we need to do is cache the firmware before suspend, and | |
1920 | * release it when we come out. | |
1921 | * | |
1922 | * Only need to do this if we're downloading firmware. */ | |
1923 | if (!priv->do_fw_download) | |
1924 | return NOTIFY_DONE; | |
1925 | ||
1926 | switch (pm_event) { | |
1927 | case PM_HIBERNATION_PREPARE: | |
1928 | case PM_SUSPEND_PREPARE: | |
1929 | orinoco_cache_fw(priv, 0); | |
1930 | break; | |
1931 | ||
1932 | case PM_POST_RESTORE: | |
1933 | /* Restore from hibernation failed. We need to clean | |
1934 | * up in exactly the same way, so fall through. */ | |
1935 | case PM_POST_HIBERNATION: | |
1936 | case PM_POST_SUSPEND: | |
1937 | orinoco_uncache_fw(priv); | |
1938 | break; | |
1939 | ||
1940 | case PM_RESTORE_PREPARE: | |
1941 | default: | |
1942 | break; | |
1943 | } | |
1944 | ||
1945 | return NOTIFY_DONE; | |
1946 | } | |
f11c179e DM |
1947 | |
1948 | static void orinoco_register_pm_notifier(struct orinoco_private *priv) | |
1949 | { | |
1950 | priv->pm_notifier.notifier_call = orinoco_pm_notifier; | |
1951 | register_pm_notifier(&priv->pm_notifier); | |
1952 | } | |
1953 | ||
1954 | static void orinoco_unregister_pm_notifier(struct orinoco_private *priv) | |
1955 | { | |
1956 | unregister_pm_notifier(&priv->pm_notifier); | |
1957 | } | |
39d1ffee | 1958 | #else /* !PM_SLEEP || HERMES_CACHE_FW_ON_INIT */ |
f11c179e DM |
1959 | #define orinoco_register_pm_notifier(priv) do { } while(0) |
1960 | #define orinoco_unregister_pm_notifier(priv) do { } while(0) | |
39d1ffee DK |
1961 | #endif |
1962 | ||
1da177e4 LT |
1963 | /********************************************************************/ |
1964 | /* Initialization */ | |
1965 | /********************************************************************/ | |
1966 | ||
8e638267 | 1967 | int orinoco_init(struct orinoco_private *priv) |
1da177e4 | 1968 | { |
8e638267 | 1969 | struct device *dev = priv->dev; |
ea60a6aa | 1970 | struct wiphy *wiphy = priv_to_wiphy(priv); |
1da177e4 LT |
1971 | hermes_t *hw = &priv->hw; |
1972 | int err = 0; | |
1da177e4 | 1973 | |
1da177e4 LT |
1974 | /* No need to lock, the hw_unavailable flag is already set in |
1975 | * alloc_orinocodev() */ | |
2c706002 | 1976 | priv->nicbuf_size = IEEE80211_MAX_FRAME_LEN + ETH_HLEN; |
1da177e4 LT |
1977 | |
1978 | /* Initialize the firmware */ | |
37a6c611 | 1979 | err = hermes_init(hw); |
1da177e4 | 1980 | if (err != 0) { |
8e638267 DK |
1981 | dev_err(dev, "Failed to initialize firmware (err = %d)\n", |
1982 | err); | |
1da177e4 LT |
1983 | goto out; |
1984 | } | |
1985 | ||
a2d1a42a | 1986 | err = determine_fw_capabilities(priv); |
1da177e4 | 1987 | if (err != 0) { |
8e638267 | 1988 | dev_err(dev, "Incompatible firmware, aborting\n"); |
1da177e4 LT |
1989 | goto out; |
1990 | } | |
1991 | ||
3994d502 | 1992 | if (priv->do_fw_download) { |
39d1ffee | 1993 | #ifdef CONFIG_HERMES_CACHE_FW_ON_INIT |
74734312 | 1994 | orinoco_cache_fw(priv, 0); |
39d1ffee | 1995 | #endif |
74734312 | 1996 | |
3994d502 DK |
1997 | err = orinoco_download(priv); |
1998 | if (err) | |
1999 | priv->do_fw_download = 0; | |
2000 | ||
2001 | /* Check firmware version again */ | |
a2d1a42a | 2002 | err = determine_fw_capabilities(priv); |
3994d502 | 2003 | if (err != 0) { |
8e638267 | 2004 | dev_err(dev, "Incompatible firmware, aborting\n"); |
3994d502 DK |
2005 | goto out; |
2006 | } | |
2007 | } | |
2008 | ||
1da177e4 | 2009 | if (priv->has_port3) |
8e638267 | 2010 | dev_info(dev, "Ad-hoc demo mode supported\n"); |
1da177e4 | 2011 | if (priv->has_ibss) |
8e638267 DK |
2012 | dev_info(dev, "IEEE standard IBSS ad-hoc mode supported\n"); |
2013 | if (priv->has_wep) | |
2014 | dev_info(dev, "WEP supported, %s-bit key\n", | |
2015 | priv->has_big_wep ? "104" : "40"); | |
23edcc41 | 2016 | if (priv->has_wpa) { |
8e638267 | 2017 | dev_info(dev, "WPA-PSK supported\n"); |
23edcc41 | 2018 | if (orinoco_mic_init(priv)) { |
8e638267 DK |
2019 | dev_err(dev, "Failed to setup MIC crypto algorithm. " |
2020 | "Disabling WPA support\n"); | |
23edcc41 DK |
2021 | priv->has_wpa = 0; |
2022 | } | |
2023 | } | |
1da177e4 | 2024 | |
ea60a6aa | 2025 | err = orinoco_hw_read_card_settings(priv, wiphy->perm_addr); |
e9e3d010 | 2026 | if (err) |
1da177e4 | 2027 | goto out; |
1da177e4 | 2028 | |
42a51b93 | 2029 | err = orinoco_hw_allocate_fid(priv); |
37a6c611 | 2030 | if (err) { |
8e638267 | 2031 | dev_err(dev, "Failed to allocate NIC buffer!\n"); |
37a6c611 PR |
2032 | goto out; |
2033 | } | |
2034 | ||
1da177e4 | 2035 | /* Set up the default configuration */ |
5217c571 | 2036 | priv->iw_mode = NL80211_IFTYPE_STATION; |
1da177e4 | 2037 | /* By default use IEEE/IBSS ad-hoc mode if we have it */ |
a94e8427 | 2038 | priv->prefer_port3 = priv->has_port3 && (!priv->has_ibss); |
1da177e4 | 2039 | set_port_type(priv); |
d51d8b1f | 2040 | priv->channel = 0; /* use firmware default */ |
1da177e4 LT |
2041 | |
2042 | priv->promiscuous = 0; | |
5c9f41e2 | 2043 | priv->encode_alg = ORINOCO_ALG_NONE; |
1da177e4 | 2044 | priv->tx_key = 0; |
d03032af DK |
2045 | priv->wpa_enabled = 0; |
2046 | priv->tkip_cm_active = 0; | |
2047 | priv->key_mgmt = 0; | |
2048 | priv->wpa_ie_len = 0; | |
2049 | priv->wpa_ie = NULL; | |
1da177e4 | 2050 | |
ea60a6aa DK |
2051 | if (orinoco_wiphy_register(wiphy)) { |
2052 | err = -ENODEV; | |
2053 | goto out; | |
2054 | } | |
2055 | ||
1da177e4 LT |
2056 | /* Make the hardware available, as long as it hasn't been |
2057 | * removed elsewhere (e.g. by PCMCIA hot unplug) */ | |
2058 | spin_lock_irq(&priv->lock); | |
2059 | priv->hw_unavailable--; | |
2060 | spin_unlock_irq(&priv->lock); | |
2061 | ||
8e638267 | 2062 | dev_dbg(dev, "Ready\n"); |
1da177e4 LT |
2063 | |
2064 | out: | |
1da177e4 LT |
2065 | return err; |
2066 | } | |
8e638267 | 2067 | EXPORT_SYMBOL(orinoco_init); |
1da177e4 | 2068 | |
89ea4090 | 2069 | static const struct net_device_ops orinoco_netdev_ops = { |
89ea4090 AB |
2070 | .ndo_open = orinoco_open, |
2071 | .ndo_stop = orinoco_stop, | |
2072 | .ndo_start_xmit = orinoco_xmit, | |
2073 | .ndo_set_multicast_list = orinoco_set_multicast_list, | |
2074 | .ndo_change_mtu = orinoco_change_mtu, | |
240c102d BH |
2075 | .ndo_set_mac_address = eth_mac_addr, |
2076 | .ndo_validate_addr = eth_validate_addr, | |
89ea4090 AB |
2077 | .ndo_tx_timeout = orinoco_tx_timeout, |
2078 | .ndo_get_stats = orinoco_get_stats, | |
2079 | }; | |
2080 | ||
ea60a6aa DK |
2081 | /* Allocate private data. |
2082 | * | |
2083 | * This driver has a number of structures associated with it | |
2084 | * netdev - Net device structure for each network interface | |
2085 | * wiphy - structure associated with wireless phy | |
2086 | * wireless_dev (wdev) - structure for each wireless interface | |
2087 | * hw - structure for hermes chip info | |
2088 | * card - card specific structure for use by the card driver | |
2089 | * (airport, orinoco_cs) | |
2090 | * priv - orinoco private data | |
2091 | * device - generic linux device structure | |
2092 | * | |
2093 | * +---------+ +---------+ | |
2094 | * | wiphy | | netdev | | |
2095 | * | +-------+ | +-------+ | |
2096 | * | | priv | | | wdev | | |
2097 | * | | +-----+ +-+-------+ | |
2098 | * | | | hw | | |
2099 | * | +-+-----+ | |
2100 | * | | card | | |
2101 | * +-+-------+ | |
2102 | * | |
2103 | * priv has a link to netdev and device | |
2104 | * wdev has a link to wiphy | |
2105 | */ | |
a2608362 | 2106 | struct orinoco_private |
3994d502 DK |
2107 | *alloc_orinocodev(int sizeof_card, |
2108 | struct device *device, | |
2109 | int (*hard_reset)(struct orinoco_private *), | |
2110 | int (*stop_fw)(struct orinoco_private *, int)) | |
1da177e4 | 2111 | { |
1da177e4 | 2112 | struct orinoco_private *priv; |
ea60a6aa DK |
2113 | struct wiphy *wiphy; |
2114 | ||
2115 | /* allocate wiphy | |
2116 | * NOTE: We only support a single virtual interface | |
2117 | * but this may change when monitor mode is added | |
2118 | */ | |
2119 | wiphy = wiphy_new(&orinoco_cfg_ops, | |
2120 | sizeof(struct orinoco_private) + sizeof_card); | |
2121 | if (!wiphy) | |
2122 | return NULL; | |
1da177e4 | 2123 | |
ea60a6aa | 2124 | priv = wiphy_priv(wiphy); |
5381956b | 2125 | priv->dev = device; |
ea60a6aa | 2126 | |
1da177e4 | 2127 | if (sizeof_card) |
84d8a2fb | 2128 | priv->card = (void *)((unsigned long)priv |
1da177e4 LT |
2129 | + sizeof(struct orinoco_private)); |
2130 | else | |
2131 | priv->card = NULL; | |
2132 | ||
ea60a6aa DK |
2133 | orinoco_wiphy_init(wiphy); |
2134 | ||
343c686c PR |
2135 | #ifdef WIRELESS_SPY |
2136 | priv->wireless_data.spy_data = &priv->spy_data; | |
343c686c | 2137 | #endif |
23edcc41 | 2138 | |
1da177e4 | 2139 | /* Set up default callbacks */ |
1da177e4 | 2140 | priv->hard_reset = hard_reset; |
3994d502 | 2141 | priv->stop_fw = stop_fw; |
1da177e4 LT |
2142 | |
2143 | spin_lock_init(&priv->lock); | |
2144 | priv->open = 0; | |
2145 | priv->hw_unavailable = 1; /* orinoco_init() must clear this | |
2146 | * before anything else touches the | |
2147 | * hardware */ | |
c4028958 DH |
2148 | INIT_WORK(&priv->reset_work, orinoco_reset); |
2149 | INIT_WORK(&priv->join_work, orinoco_join_ap); | |
2150 | INIT_WORK(&priv->wevent_work, orinoco_send_wevents); | |
1da177e4 | 2151 | |
31afcef3 DK |
2152 | INIT_LIST_HEAD(&priv->rx_list); |
2153 | tasklet_init(&priv->rx_tasklet, orinoco_rx_isr_tasklet, | |
5381956b | 2154 | (unsigned long) priv); |
31afcef3 | 2155 | |
c63cdbe8 DK |
2156 | spin_lock_init(&priv->scan_lock); |
2157 | INIT_LIST_HEAD(&priv->scan_list); | |
2158 | INIT_WORK(&priv->process_scan, orinoco_process_scan_results); | |
2159 | ||
1da177e4 LT |
2160 | priv->last_linkstatus = 0xffff; |
2161 | ||
2bfc5cb5 | 2162 | #if defined(CONFIG_HERMES_CACHE_FW_ON_INIT) || defined(CONFIG_PM_SLEEP) |
2cea7b26 | 2163 | priv->cached_pri_fw = NULL; |
4fb30784 | 2164 | priv->cached_fw = NULL; |
2bfc5cb5 | 2165 | #endif |
4fb30784 | 2166 | |
39d1ffee | 2167 | /* Register PM notifiers */ |
f11c179e | 2168 | orinoco_register_pm_notifier(priv); |
39d1ffee | 2169 | |
a2608362 | 2170 | return priv; |
1da177e4 | 2171 | } |
2131266d | 2172 | EXPORT_SYMBOL(alloc_orinocodev); |
1da177e4 | 2173 | |
5381956b DK |
2174 | /* We can only support a single interface. We provide a separate |
2175 | * function to set it up to distinguish between hardware | |
2176 | * initialisation and interface setup. | |
2177 | * | |
2178 | * The base_addr and irq parameters are passed on to netdev for use | |
2179 | * with SIOCGIFMAP. | |
2180 | */ | |
2181 | int orinoco_if_add(struct orinoco_private *priv, | |
2182 | unsigned long base_addr, | |
2183 | unsigned int irq) | |
2184 | { | |
2185 | struct wiphy *wiphy = priv_to_wiphy(priv); | |
2186 | struct wireless_dev *wdev; | |
2187 | struct net_device *dev; | |
2188 | int ret; | |
2189 | ||
2190 | dev = alloc_etherdev(sizeof(struct wireless_dev)); | |
2191 | ||
2192 | if (!dev) | |
2193 | return -ENOMEM; | |
2194 | ||
2195 | /* Initialise wireless_dev */ | |
2196 | wdev = netdev_priv(dev); | |
2197 | wdev->wiphy = wiphy; | |
2198 | wdev->iftype = NL80211_IFTYPE_STATION; | |
2199 | ||
2200 | /* Setup / override net_device fields */ | |
2201 | dev->ieee80211_ptr = wdev; | |
2202 | dev->netdev_ops = &orinoco_netdev_ops; | |
2203 | dev->watchdog_timeo = HZ; /* 1 second timeout */ | |
2204 | dev->ethtool_ops = &orinoco_ethtool_ops; | |
2205 | dev->wireless_handlers = &orinoco_handler_def; | |
2206 | #ifdef WIRELESS_SPY | |
2207 | dev->wireless_data = &priv->wireless_data; | |
2208 | #endif | |
2209 | /* we use the default eth_mac_addr for setting the MAC addr */ | |
2210 | ||
2211 | /* Reserve space in skb for the SNAP header */ | |
2212 | dev->hard_header_len += ENCAPS_OVERHEAD; | |
2213 | ||
2214 | netif_carrier_off(dev); | |
2215 | ||
2216 | memcpy(dev->dev_addr, wiphy->perm_addr, ETH_ALEN); | |
2217 | ||
2218 | dev->base_addr = base_addr; | |
2219 | dev->irq = irq; | |
2220 | ||
2221 | SET_NETDEV_DEV(dev, priv->dev); | |
2222 | ret = register_netdev(dev); | |
2223 | if (ret) | |
2224 | goto fail; | |
2225 | ||
2226 | priv->ndev = dev; | |
2227 | ||
2228 | /* Report what we've done */ | |
2229 | dev_dbg(priv->dev, "Registerred interface %s.\n", dev->name); | |
2230 | ||
2231 | return 0; | |
2232 | ||
2233 | fail: | |
2234 | free_netdev(dev); | |
2235 | return ret; | |
2236 | } | |
2237 | EXPORT_SYMBOL(orinoco_if_add); | |
2238 | ||
2239 | void orinoco_if_del(struct orinoco_private *priv) | |
1da177e4 | 2240 | { |
a2608362 | 2241 | struct net_device *dev = priv->ndev; |
5381956b DK |
2242 | |
2243 | unregister_netdev(dev); | |
2244 | free_netdev(dev); | |
2245 | } | |
2246 | EXPORT_SYMBOL(orinoco_if_del); | |
2247 | ||
2248 | void free_orinocodev(struct orinoco_private *priv) | |
2249 | { | |
ea60a6aa | 2250 | struct wiphy *wiphy = priv_to_wiphy(priv); |
20953ad6 | 2251 | struct orinoco_rx_data *rx_data, *temp; |
c63cdbe8 | 2252 | struct orinoco_scan_data *sd, *sdtemp; |
95dd91fb | 2253 | |
ea60a6aa DK |
2254 | wiphy_unregister(wiphy); |
2255 | ||
20953ad6 DK |
2256 | /* If the tasklet is scheduled when we call tasklet_kill it |
2257 | * will run one final time. However the tasklet will only | |
2258 | * drain priv->rx_list if the hw is still available. */ | |
31afcef3 | 2259 | tasklet_kill(&priv->rx_tasklet); |
74734312 | 2260 | |
20953ad6 DK |
2261 | /* Explicitly drain priv->rx_list */ |
2262 | list_for_each_entry_safe(rx_data, temp, &priv->rx_list, list) { | |
2263 | list_del(&rx_data->list); | |
2264 | ||
2265 | dev_kfree_skb(rx_data->skb); | |
2266 | kfree(rx_data->desc); | |
2267 | kfree(rx_data); | |
2268 | } | |
2269 | ||
c63cdbe8 DK |
2270 | cancel_work_sync(&priv->process_scan); |
2271 | /* Explicitly drain priv->scan_list */ | |
2272 | list_for_each_entry_safe(sd, sdtemp, &priv->scan_list, list) { | |
2273 | list_del(&sd->list); | |
2274 | ||
2275 | if ((sd->len > 0) && sd->buf) | |
2276 | kfree(sd->buf); | |
2277 | kfree(sd); | |
2278 | } | |
2279 | ||
f11c179e | 2280 | orinoco_unregister_pm_notifier(priv); |
74734312 DK |
2281 | orinoco_uncache_fw(priv); |
2282 | ||
d03032af DK |
2283 | priv->wpa_ie_len = 0; |
2284 | kfree(priv->wpa_ie); | |
23edcc41 | 2285 | orinoco_mic_free(priv); |
ea60a6aa | 2286 | wiphy_free(wiphy); |
1da177e4 | 2287 | } |
2131266d | 2288 | EXPORT_SYMBOL(free_orinocodev); |
1da177e4 | 2289 | |
6415f7df DK |
2290 | int orinoco_up(struct orinoco_private *priv) |
2291 | { | |
2292 | struct net_device *dev = priv->ndev; | |
2293 | unsigned long flags; | |
2294 | int err; | |
2295 | ||
2296 | spin_lock_irqsave(&priv->lock, flags); | |
2297 | ||
2298 | err = orinoco_reinit_firmware(priv); | |
2299 | if (err) { | |
2300 | printk(KERN_ERR "%s: Error %d re-initializing firmware\n", | |
2301 | dev->name, err); | |
2302 | goto exit; | |
2303 | } | |
2304 | ||
2305 | netif_device_attach(dev); | |
2306 | priv->hw_unavailable--; | |
2307 | ||
2308 | if (priv->open && !priv->hw_unavailable) { | |
2309 | err = __orinoco_up(priv); | |
2310 | if (err) | |
2311 | printk(KERN_ERR "%s: Error %d restarting card\n", | |
2312 | dev->name, err); | |
2313 | } | |
2314 | ||
2315 | exit: | |
2316 | spin_unlock_irqrestore(&priv->lock, flags); | |
2317 | ||
2318 | return 0; | |
2319 | } | |
2320 | EXPORT_SYMBOL(orinoco_up); | |
2321 | ||
2322 | void orinoco_down(struct orinoco_private *priv) | |
2323 | { | |
2324 | struct net_device *dev = priv->ndev; | |
2325 | unsigned long flags; | |
2326 | int err; | |
2327 | ||
2328 | spin_lock_irqsave(&priv->lock, flags); | |
2329 | err = __orinoco_down(priv); | |
2330 | if (err) | |
2331 | printk(KERN_WARNING "%s: Error %d downing interface\n", | |
2332 | dev->name, err); | |
2333 | ||
2334 | netif_device_detach(dev); | |
2335 | priv->hw_unavailable++; | |
2336 | spin_unlock_irqrestore(&priv->lock, flags); | |
2337 | } | |
2338 | EXPORT_SYMBOL(orinoco_down); | |
2339 | ||
1fab2e8b CH |
2340 | static void orinoco_get_drvinfo(struct net_device *dev, |
2341 | struct ethtool_drvinfo *info) | |
2342 | { | |
ea60a6aa | 2343 | struct orinoco_private *priv = ndev_priv(dev); |
1da177e4 | 2344 | |
1fab2e8b CH |
2345 | strncpy(info->driver, DRIVER_NAME, sizeof(info->driver) - 1); |
2346 | strncpy(info->version, DRIVER_VERSION, sizeof(info->version) - 1); | |
2347 | strncpy(info->fw_version, priv->fw_name, sizeof(info->fw_version) - 1); | |
43cb76d9 | 2348 | if (dev->dev.parent) |
fb28ad35 | 2349 | strncpy(info->bus_info, dev_name(dev->dev.parent), |
1fab2e8b CH |
2350 | sizeof(info->bus_info) - 1); |
2351 | else | |
2352 | snprintf(info->bus_info, sizeof(info->bus_info) - 1, | |
2353 | "PCMCIA %p", priv->hw.iobase); | |
1da177e4 LT |
2354 | } |
2355 | ||
7282d491 | 2356 | static const struct ethtool_ops orinoco_ethtool_ops = { |
1fab2e8b CH |
2357 | .get_drvinfo = orinoco_get_drvinfo, |
2358 | .get_link = ethtool_op_get_link, | |
2359 | }; | |
1da177e4 | 2360 | |
1da177e4 LT |
2361 | /********************************************************************/ |
2362 | /* Module initialization */ | |
2363 | /********************************************************************/ | |
2364 | ||
1da177e4 LT |
2365 | /* Can't be declared "const" or the whole __initdata section will |
2366 | * become const */ | |
2367 | static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION | |
2368 | " (David Gibson <hermes@gibson.dropbear.id.au>, " | |
2369 | "Pavel Roskin <proski@gnu.org>, et al)"; | |
2370 | ||
2371 | static int __init init_orinoco(void) | |
2372 | { | |
2373 | printk(KERN_DEBUG "%s\n", version); | |
2374 | return 0; | |
2375 | } | |
2376 | ||
2377 | static void __exit exit_orinoco(void) | |
2378 | { | |
2379 | } | |
2380 | ||
2381 | module_init(init_orinoco); | |
2382 | module_exit(exit_orinoco); |