2 * at76c503/at76c505 USB driver
4 * Copyright (c) 2002 - 2003 Oliver Kurth
5 * Copyright (c) 2004 Joerg Albert <joerg.albert@gmx.de>
6 * Copyright (c) 2004 Nick Jones
7 * Copyright (c) 2004 Balint Seeber <n0_5p4m_p13453@hotmail.com>
8 * Copyright (c) 2007 Guido Guenther <agx@sigxcpu.org>
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; either version 2 of
13 * the License, or (at your option) any later version.
15 * This file is part of the Berlios driver for WLAN USB devices based on the
16 * Atmel AT76C503A/505/505A.
18 * Some iw_handler code was taken from airo.c, (C) 1999 Benjamin Reed
21 #include <linux/init.h>
22 #include <linux/kernel.h>
23 #include <linux/sched.h>
24 #include <linux/errno.h>
25 #include <linux/slab.h>
26 #include <linux/module.h>
27 #include <linux/spinlock.h>
28 #include <linux/list.h>
29 #include <linux/usb.h>
30 #include <linux/netdevice.h>
31 #include <linux/if_arp.h>
32 #include <linux/etherdevice.h>
33 #include <linux/ethtool.h>
34 #include <linux/wireless.h>
35 #include <net/iw_handler.h>
36 #include <net/ieee80211_radiotap.h>
37 #include <linux/firmware.h>
38 #include <linux/leds.h>
39 #include <net/ieee80211.h>
43 /* Version information */
44 #define DRIVER_NAME "at76_usb"
45 #define DRIVER_VERSION "0.17"
46 #define DRIVER_DESC "Atmel at76x USB Wireless LAN Driver"
49 #define DBG_PROGRESS 0x00000001 /* authentication/accociation */
50 #define DBG_BSS_TABLE 0x00000002 /* show BSS table after scans */
51 #define DBG_IOCTL 0x00000004 /* ioctl calls / settings */
52 #define DBG_MAC_STATE 0x00000008 /* MAC state transitions */
53 #define DBG_TX_DATA 0x00000010 /* tx header */
54 #define DBG_TX_DATA_CONTENT 0x00000020 /* tx content */
55 #define DBG_TX_MGMT 0x00000040 /* tx management */
56 #define DBG_RX_DATA 0x00000080 /* rx data header */
57 #define DBG_RX_DATA_CONTENT 0x00000100 /* rx data content */
58 #define DBG_RX_MGMT 0x00000200 /* rx mgmt frame headers */
59 #define DBG_RX_BEACON 0x00000400 /* rx beacon */
60 #define DBG_RX_CTRL 0x00000800 /* rx control */
61 #define DBG_RX_MGMT_CONTENT 0x00001000 /* rx mgmt content */
62 #define DBG_RX_FRAGS 0x00002000 /* rx data fragment handling */
63 #define DBG_DEVSTART 0x00004000 /* fw download, device start */
64 #define DBG_URB 0x00008000 /* rx urb status, ... */
65 #define DBG_RX_ATMEL_HDR 0x00010000 /* Atmel-specific Rx headers */
66 #define DBG_PROC_ENTRY 0x00020000 /* procedure entries/exits */
67 #define DBG_PM 0x00040000 /* power management settings */
68 #define DBG_BSS_MATCH 0x00080000 /* BSS match failures */
69 #define DBG_PARAMS 0x00100000 /* show configured parameters */
70 #define DBG_WAIT_COMPLETE 0x00200000 /* command completion */
71 #define DBG_RX_FRAGS_SKB 0x00400000 /* skb header of Rx fragments */
72 #define DBG_BSS_TABLE_RM 0x00800000 /* purging bss table entries */
73 #define DBG_MONITOR_MODE 0x01000000 /* monitor mode */
74 #define DBG_MIB 0x02000000 /* dump all MIBs on startup */
75 #define DBG_MGMT_TIMER 0x04000000 /* dump mgmt_timer ops */
76 #define DBG_WE_EVENTS 0x08000000 /* dump wireless events */
77 #define DBG_FW 0x10000000 /* firmware download */
78 #define DBG_DFU 0x20000000 /* device firmware upgrade */
80 #define DBG_DEFAULTS 0
82 /* Use our own dbg macro */
83 #define at76_dbg(bits, format, arg...) \
85 if (at76_debug & (bits)) \
86 printk(KERN_DEBUG DRIVER_NAME ": " format "\n" , ## arg); \
89 static int at76_debug = DBG_DEFAULTS;
91 /* Protect against concurrent firmware loading and parsing */
92 static struct mutex fw_mutex;
94 static struct fwentry firmwares[] = {
96 [BOARD_503_ISL3861] = {"atmel_at76c503-i3861.bin"},
97 [BOARD_503_ISL3863] = {"atmel_at76c503-i3863.bin"},
98 [BOARD_503] = {"atmel_at76c503-rfmd.bin"},
99 [BOARD_503_ACC] = {"atmel_at76c503-rfmd-acc.bin"},
100 [BOARD_505] = {"atmel_at76c505-rfmd.bin"},
101 [BOARD_505_2958] = {"atmel_at76c505-rfmd2958.bin"},
102 [BOARD_505A] = {"atmel_at76c505a-rfmd2958.bin"},
103 [BOARD_505AMX] = {"atmel_at76c505amx-rfmd.bin"},
106 #define USB_DEVICE_DATA(__ops) .driver_info = (kernel_ulong_t)(__ops)
108 static struct usb_device_id dev_table[] = {
112 /* Generic AT76C503/3861 device */
113 {USB_DEVICE(0x03eb, 0x7603), USB_DEVICE_DATA(BOARD_503_ISL3861)},
114 /* Linksys WUSB11 v2.1/v2.6 */
115 {USB_DEVICE(0x066b, 0x2211), USB_DEVICE_DATA(BOARD_503_ISL3861)},
116 /* Netgear MA101 rev. A */
117 {USB_DEVICE(0x0864, 0x4100), USB_DEVICE_DATA(BOARD_503_ISL3861)},
118 /* Tekram U300C / Allnet ALL0193 */
119 {USB_DEVICE(0x0b3b, 0x1612), USB_DEVICE_DATA(BOARD_503_ISL3861)},
120 /* HP HN210W J7801A */
121 {USB_DEVICE(0x03f0, 0x011c), USB_DEVICE_DATA(BOARD_503_ISL3861)},
122 /* Sitecom/Z-Com/Zyxel M4Y-750 */
123 {USB_DEVICE(0x0cde, 0x0001), USB_DEVICE_DATA(BOARD_503_ISL3861)},
124 /* Dynalink/Askey WLL013 (intersil) */
125 {USB_DEVICE(0x069a, 0x0320), USB_DEVICE_DATA(BOARD_503_ISL3861)},
126 /* EZ connect 11Mpbs Wireless USB Adapter SMC2662W v1 */
127 {USB_DEVICE(0x0d5c, 0xa001), USB_DEVICE_DATA(BOARD_503_ISL3861)},
129 {USB_DEVICE(0x04a5, 0x9000), USB_DEVICE_DATA(BOARD_503_ISL3861)},
130 /* Addtron AWU-120, Compex WLU11 */
131 {USB_DEVICE(0x05dd, 0xff31), USB_DEVICE_DATA(BOARD_503_ISL3861)},
132 /* Intel AP310 AnyPoint II USB */
133 {USB_DEVICE(0x8086, 0x0200), USB_DEVICE_DATA(BOARD_503_ISL3861)},
135 {USB_DEVICE(0x0d8e, 0x7100), USB_DEVICE_DATA(BOARD_503_ISL3861)},
136 /* Arescom WL-210, FCC id 07J-GL2411USB */
137 {USB_DEVICE(0x0d8e, 0x7110), USB_DEVICE_DATA(BOARD_503_ISL3861)},
138 /* I-O DATA WN-B11/USB */
139 {USB_DEVICE(0x04bb, 0x0919), USB_DEVICE_DATA(BOARD_503_ISL3861)},
140 /* BT Voyager 1010 */
141 {USB_DEVICE(0x069a, 0x0821), USB_DEVICE_DATA(BOARD_503_ISL3861)},
145 /* Generic AT76C503/3863 device */
146 {USB_DEVICE(0x03eb, 0x7604), USB_DEVICE_DATA(BOARD_503_ISL3863)},
147 /* Samsung SWL-2100U */
148 {USB_DEVICE(0x055d, 0xa000), USB_DEVICE_DATA(BOARD_503_ISL3863)},
152 /* Generic AT76C503/RFMD device */
153 {USB_DEVICE(0x03eb, 0x7605), USB_DEVICE_DATA(BOARD_503)},
154 /* Dynalink/Askey WLL013 (rfmd) */
155 {USB_DEVICE(0x069a, 0x0321), USB_DEVICE_DATA(BOARD_503)},
156 /* Linksys WUSB11 v2.6 */
157 {USB_DEVICE(0x077b, 0x2219), USB_DEVICE_DATA(BOARD_503)},
158 /* Network Everywhere NWU11B */
159 {USB_DEVICE(0x077b, 0x2227), USB_DEVICE_DATA(BOARD_503)},
160 /* Netgear MA101 rev. B */
161 {USB_DEVICE(0x0864, 0x4102), USB_DEVICE_DATA(BOARD_503)},
162 /* D-Link DWL-120 rev. E */
163 {USB_DEVICE(0x2001, 0x3200), USB_DEVICE_DATA(BOARD_503)},
164 /* Actiontec 802UAT1, HWU01150-01UK */
165 {USB_DEVICE(0x1668, 0x7605), USB_DEVICE_DATA(BOARD_503)},
166 /* AirVast W-Buddie WN210 */
167 {USB_DEVICE(0x03eb, 0x4102), USB_DEVICE_DATA(BOARD_503)},
168 /* Dick Smith Electronics XH1153 802.11b USB adapter */
169 {USB_DEVICE(0x1371, 0x5743), USB_DEVICE_DATA(BOARD_503)},
171 {USB_DEVICE(0x1371, 0x0001), USB_DEVICE_DATA(BOARD_503)},
172 /* FiberLine FL-WL200U */
173 {USB_DEVICE(0x1371, 0x0002), USB_DEVICE_DATA(BOARD_503)},
174 /* BenQ AWL400 USB stick */
175 {USB_DEVICE(0x04a5, 0x9001), USB_DEVICE_DATA(BOARD_503)},
176 /* 3Com 3CRSHEW696 */
177 {USB_DEVICE(0x0506, 0x0a01), USB_DEVICE_DATA(BOARD_503)},
178 /* Siemens Santis ADSL WLAN USB adapter WLL 013 */
179 {USB_DEVICE(0x0681, 0x001b), USB_DEVICE_DATA(BOARD_503)},
180 /* Belkin F5D6050, version 2 */
181 {USB_DEVICE(0x050d, 0x0050), USB_DEVICE_DATA(BOARD_503)},
182 /* iBlitzz, BWU613 (not *B or *SB) */
183 {USB_DEVICE(0x07b8, 0xb000), USB_DEVICE_DATA(BOARD_503)},
184 /* Gigabyte GN-WLBM101 */
185 {USB_DEVICE(0x1044, 0x8003), USB_DEVICE_DATA(BOARD_503)},
186 /* Planex GW-US11S */
187 {USB_DEVICE(0x2019, 0x3220), USB_DEVICE_DATA(BOARD_503)},
188 /* Internal WLAN adapter in h5[4,5]xx series iPAQs */
189 {USB_DEVICE(0x049f, 0x0032), USB_DEVICE_DATA(BOARD_503)},
190 /* Corega Wireless LAN USB-11 mini */
191 {USB_DEVICE(0x07aa, 0x0011), USB_DEVICE_DATA(BOARD_503)},
192 /* Corega Wireless LAN USB-11 mini2 */
193 {USB_DEVICE(0x07aa, 0x0018), USB_DEVICE_DATA(BOARD_503)},
195 {USB_DEVICE(0x05dd, 0xff35), USB_DEVICE_DATA(BOARD_503)},
200 {USB_DEVICE(0x083a, 0x3501), USB_DEVICE_DATA(BOARD_503_ACC)},
201 /* Belkin F5D6050, SMC2662W v2, SMC2662W-AR */
202 {USB_DEVICE(0x0d5c, 0xa002), USB_DEVICE_DATA(BOARD_503_ACC)},
206 /* Generic AT76C505/RFMD */
207 {USB_DEVICE(0x03eb, 0x7606), USB_DEVICE_DATA(BOARD_505)},
211 /* Generic AT76C505/RFMD, OvisLink WL-1130USB */
212 {USB_DEVICE(0x03eb, 0x7613), USB_DEVICE_DATA(BOARD_505_2958)},
213 /* Fiberline FL-WL240U */
214 {USB_DEVICE(0x1371, 0x0014), USB_DEVICE_DATA(BOARD_505_2958)},
215 /* CNet CNUSB-611G */
216 {USB_DEVICE(0x1371, 0x0013), USB_DEVICE_DATA(BOARD_505_2958)},
217 /* Linksys WUSB11 v2.8 */
218 {USB_DEVICE(0x1915, 0x2233), USB_DEVICE_DATA(BOARD_505_2958)},
219 /* Xterasys XN-2122B, IBlitzz BWU613B/BWU613SB */
220 {USB_DEVICE(0x12fd, 0x1001), USB_DEVICE_DATA(BOARD_505_2958)},
221 /* Corega WLAN USB Stick 11 */
222 {USB_DEVICE(0x07aa, 0x7613), USB_DEVICE_DATA(BOARD_505_2958)},
223 /* Microstar MSI Box MS6978 */
224 {USB_DEVICE(0x0db0, 0x1020), USB_DEVICE_DATA(BOARD_505_2958)},
228 /* Generic AT76C505A device */
229 {USB_DEVICE(0x03eb, 0x7614), USB_DEVICE_DATA(BOARD_505A)},
230 /* Generic AT76C505AS device */
231 {USB_DEVICE(0x03eb, 0x7617), USB_DEVICE_DATA(BOARD_505A)},
232 /* Siemens Gigaset USB WLAN Adapter 11 */
233 {USB_DEVICE(0x1690, 0x0701), USB_DEVICE_DATA(BOARD_505A)},
237 /* Generic AT76C505AMX device */
238 {USB_DEVICE(0x03eb, 0x7615), USB_DEVICE_DATA(BOARD_505AMX)},
242 MODULE_DEVICE_TABLE(usb, dev_table);
244 /* Supported rates of this hardware, bit 7 marks basic rates */
245 static const u8 hw_rates[] = { 0x82, 0x84, 0x0b, 0x16 };
247 /* Frequency of each channel in MHz */
248 static const long channel_frequency[] = {
249 2412, 2417, 2422, 2427, 2432, 2437, 2442,
250 2447, 2452, 2457, 2462, 2467, 2472, 2484
253 #define NUM_CHANNELS ARRAY_SIZE(channel_frequency)
255 static const char *const preambles[] = { "long", "short", "auto" };
257 static const char *const mac_states[] = {
259 [MAC_SCANNING] = "SCANNING",
261 [MAC_ASSOC] = "ASSOC",
262 [MAC_JOINING] = "JOINING",
263 [MAC_CONNECTED] = "CONNECTED",
264 [MAC_OWN_IBSS] = "OWN_IBSS"
267 /* Firmware download */
269 #define STATE_IDLE 0x00
270 #define STATE_DETACH 0x01
271 #define STATE_DFU_IDLE 0x02
272 #define STATE_DFU_DOWNLOAD_SYNC 0x03
273 #define STATE_DFU_DOWNLOAD_BUSY 0x04
274 #define STATE_DFU_DOWNLOAD_IDLE 0x05
275 #define STATE_DFU_MANIFEST_SYNC 0x06
276 #define STATE_DFU_MANIFEST 0x07
277 #define STATE_DFU_MANIFEST_WAIT_RESET 0x08
278 #define STATE_DFU_UPLOAD_IDLE 0x09
279 #define STATE_DFU_ERROR 0x0a
285 #define DFU_GETSTATUS 3
286 #define DFU_CLRSTATUS 4
287 #define DFU_GETSTATE 5
290 #define FW_BLOCK_SIZE 1024
293 unsigned char status;
294 unsigned char poll_timeout[3];
296 unsigned char string;
297 } __attribute__((packed));
299 static inline int at76_is_intersil(enum board_type board)
301 return (board == BOARD_503_ISL3861 || board == BOARD_503_ISL3863);
304 static inline int at76_is_503rfmd(enum board_type board)
306 return (board == BOARD_503 || board == BOARD_503_ACC);
309 static inline int at76_is_505a(enum board_type board)
311 return (board == BOARD_505A || board == BOARD_505AMX);
314 /* Load a block of the first (internal) part of the firmware */
315 static int at76_load_int_fw_block(struct usb_device *udev, int blockno,
316 void *block, int size)
318 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), DFU_DNLOAD,
319 USB_TYPE_CLASS | USB_DIR_OUT |
320 USB_RECIP_INTERFACE, blockno, 0, block, size,
321 USB_CTRL_GET_TIMEOUT);
324 static int at76_dfu_get_status(struct usb_device *udev,
325 struct dfu_status *status)
329 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATUS,
330 USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
331 0, 0, status, sizeof(struct dfu_status),
332 USB_CTRL_GET_TIMEOUT);
336 static u8 at76_dfu_get_state(struct usb_device *udev, u8 *state)
340 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATE,
341 USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
342 0, 0, state, 1, USB_CTRL_GET_TIMEOUT);
346 /* Convert timeout from the DFU status to jiffies */
347 static inline unsigned long at76_get_timeout(struct dfu_status *s)
349 return msecs_to_jiffies((s->poll_timeout[2] << 16)
350 | (s->poll_timeout[1] << 8)
351 | (s->poll_timeout[0]));
354 /* Load internal firmware from the buffer. If manifest_sync_timeout > 0, use
355 * its value in jiffies in the MANIFEST_SYNC state. */
356 static int at76_usbdfu_download(struct usb_device *udev, u8 *buf, u32 size,
357 int manifest_sync_timeout)
360 struct dfu_status dfu_stat_buf;
362 int need_dfu_state = 1;
369 at76_dbg(DBG_DFU, "%s( %p, %u, %d)", __func__, buf, size,
370 manifest_sync_timeout);
373 dev_printk(KERN_ERR, &udev->dev, "FW buffer length invalid!\n");
377 block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
382 if (need_dfu_state) {
383 ret = at76_dfu_get_state(udev, &dfu_state);
385 dev_printk(KERN_ERR, &udev->dev,
386 "cannot get DFU state: %d\n", ret);
393 case STATE_DFU_DOWNLOAD_SYNC:
394 at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_SYNC");
395 ret = at76_dfu_get_status(udev, &dfu_stat_buf);
397 dfu_state = dfu_stat_buf.state;
398 dfu_timeout = at76_get_timeout(&dfu_stat_buf);
401 dev_printk(KERN_ERR, &udev->dev,
402 "at76_dfu_get_status returned %d\n",
406 case STATE_DFU_DOWNLOAD_BUSY:
407 at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_BUSY");
410 at76_dbg(DBG_DFU, "DFU: Resetting device");
411 schedule_timeout_interruptible(dfu_timeout);
414 case STATE_DFU_DOWNLOAD_IDLE:
415 at76_dbg(DBG_DFU, "DOWNLOAD...");
418 at76_dbg(DBG_DFU, "DFU IDLE");
420 bsize = min_t(int, size, FW_BLOCK_SIZE);
421 memcpy(block, buf, bsize);
422 at76_dbg(DBG_DFU, "int fw, size left = %5d, "
423 "bsize = %4d, blockno = %2d", size, bsize,
426 at76_load_int_fw_block(udev, blockno, block, bsize);
432 dev_printk(KERN_ERR, &udev->dev,
433 "at76_load_int_fw_block "
434 "returned %d\n", ret);
438 case STATE_DFU_MANIFEST_SYNC:
439 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_SYNC");
441 ret = at76_dfu_get_status(udev, &dfu_stat_buf);
445 dfu_state = dfu_stat_buf.state;
446 dfu_timeout = at76_get_timeout(&dfu_stat_buf);
449 /* override the timeout from the status response,
450 needed for AT76C505A */
451 if (manifest_sync_timeout > 0)
452 dfu_timeout = manifest_sync_timeout;
454 at76_dbg(DBG_DFU, "DFU: Waiting for manifest phase");
455 schedule_timeout_interruptible(dfu_timeout);
458 case STATE_DFU_MANIFEST:
459 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST");
463 case STATE_DFU_MANIFEST_WAIT_RESET:
464 at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_WAIT_RESET");
468 case STATE_DFU_UPLOAD_IDLE:
469 at76_dbg(DBG_DFU, "STATE_DFU_UPLOAD_IDLE");
472 case STATE_DFU_ERROR:
473 at76_dbg(DBG_DFU, "STATE_DFU_ERROR");
478 at76_dbg(DBG_DFU, "DFU UNKNOWN STATE (%d)", dfu_state);
482 } while (!is_done && (ret >= 0));
492 /* Report that the scan results are ready */
493 static inline void at76_iwevent_scan_complete(struct net_device *netdev)
495 union iwreq_data wrqu;
496 wrqu.data.length = 0;
498 wireless_send_event(netdev, SIOCGIWSCAN, &wrqu, NULL);
499 at76_dbg(DBG_WE_EVENTS, "%s: SIOCGIWSCAN sent", netdev->name);
502 static inline void at76_iwevent_bss_connect(struct net_device *netdev,
505 union iwreq_data wrqu;
506 wrqu.data.length = 0;
508 memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
509 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
510 wireless_send_event(netdev, SIOCGIWAP, &wrqu, NULL);
511 at76_dbg(DBG_WE_EVENTS, "%s: %s: SIOCGIWAP sent", netdev->name,
515 static inline void at76_iwevent_bss_disconnect(struct net_device *netdev)
517 union iwreq_data wrqu;
518 wrqu.data.length = 0;
520 memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
521 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
522 wireless_send_event(netdev, SIOCGIWAP, &wrqu, NULL);
523 at76_dbg(DBG_WE_EVENTS, "%s: %s: SIOCGIWAP sent", netdev->name,
527 #define HEX2STR_BUFFERS 4
528 #define HEX2STR_MAX_LEN 64
529 #define BIN2HEX(x) ((x) < 10 ? '0' + (x) : (x) + 'A' - 10)
531 /* Convert binary data into hex string */
532 static char *hex2str(void *buf, int len)
534 static atomic_t a = ATOMIC_INIT(0);
535 static char bufs[HEX2STR_BUFFERS][3 * HEX2STR_MAX_LEN + 1];
536 char *ret = bufs[atomic_inc_return(&a) & (HEX2STR_BUFFERS - 1)];
540 if (len > HEX2STR_MAX_LEN)
541 len = HEX2STR_MAX_LEN;
549 *obuf++ = BIN2HEX(*ibuf >> 4);
550 *obuf++ = BIN2HEX(*ibuf & 0xf);
559 #define MAC2STR_BUFFERS 4
561 static inline char *mac2str(u8 *mac)
563 static atomic_t a = ATOMIC_INIT(0);
564 static char bufs[MAC2STR_BUFFERS][6 * 3];
567 str = bufs[atomic_inc_return(&a) & (MAC2STR_BUFFERS - 1)];
568 sprintf(str, "%02x:%02x:%02x:%02x:%02x:%02x",
569 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
574 static int tx_activity;
575 static void at76_ledtrig_tx_timerfunc(unsigned long data);
576 static DEFINE_TIMER(ledtrig_tx_timer, at76_ledtrig_tx_timerfunc, 0, 0);
577 DEFINE_LED_TRIGGER(ledtrig_tx);
579 static void at76_ledtrig_tx_timerfunc(unsigned long data)
581 static int tx_lastactivity;
583 if (tx_lastactivity != tx_activity) {
584 tx_lastactivity = tx_activity;
585 led_trigger_event(ledtrig_tx, LED_FULL);
586 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
588 led_trigger_event(ledtrig_tx, LED_OFF);
591 static void at76_ledtrig_tx_activity(void)
594 if (!timer_pending(&ledtrig_tx_timer))
595 mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
598 /* Check if the given ssid is hidden */
599 static inline int at76_is_hidden_ssid(u8 *ssid, int length)
601 static const u8 zeros[32];
606 if (length == 1 && ssid[0] == ' ')
609 return (memcmp(ssid, zeros, length) == 0);
612 static inline void at76_free_bss_list(struct at76_priv *priv)
614 struct list_head *next, *ptr;
617 spin_lock_irqsave(&priv->bss_list_spinlock, flags);
619 priv->curr_bss = NULL;
621 list_for_each_safe(ptr, next, &priv->bss_list) {
623 kfree(list_entry(ptr, struct bss_info, list));
626 spin_unlock_irqrestore(&priv->bss_list_spinlock, flags);
629 static int at76_remap(struct usb_device *udev)
632 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0a,
633 USB_TYPE_VENDOR | USB_DIR_OUT |
634 USB_RECIP_INTERFACE, 0, 0, NULL, 0,
635 USB_CTRL_GET_TIMEOUT);
641 static int at76_get_op_mode(struct usb_device *udev)
646 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
647 USB_TYPE_VENDOR | USB_DIR_IN |
648 USB_RECIP_INTERFACE, 0x01, 0, &op_mode, 1,
649 USB_CTRL_GET_TIMEOUT);
658 /* Load a block of the second ("external") part of the firmware */
659 static inline int at76_load_ext_fw_block(struct usb_device *udev, int blockno,
660 void *block, int size)
662 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
663 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
664 0x0802, blockno, block, size,
665 USB_CTRL_GET_TIMEOUT);
668 static inline int at76_get_hw_cfg(struct usb_device *udev,
669 union at76_hwcfg *buf, int buf_size)
671 return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
672 USB_TYPE_VENDOR | USB_DIR_IN |
673 USB_RECIP_INTERFACE, 0x0a02, 0,
674 buf, buf_size, USB_CTRL_GET_TIMEOUT);
677 /* Intersil boards use a different "value" for GetHWConfig requests */
678 static inline int at76_get_hw_cfg_intersil(struct usb_device *udev,
679 union at76_hwcfg *buf, int buf_size)
681 return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
682 USB_TYPE_VENDOR | USB_DIR_IN |
683 USB_RECIP_INTERFACE, 0x0902, 0,
684 buf, buf_size, USB_CTRL_GET_TIMEOUT);
687 /* Get the hardware configuration for the adapter and put it to the appropriate
688 * fields of 'priv' (the GetHWConfig request and interpretation of the result
689 * depends on the board type) */
690 static int at76_get_hw_config(struct at76_priv *priv)
693 union at76_hwcfg *hwcfg = kmalloc(sizeof(*hwcfg), GFP_KERNEL);
698 if (at76_is_intersil(priv->board_type)) {
699 ret = at76_get_hw_cfg_intersil(priv->udev, hwcfg,
703 memcpy(priv->mac_addr, hwcfg->i.mac_addr, ETH_ALEN);
704 priv->regulatory_domain = hwcfg->i.regulatory_domain;
705 } else if (at76_is_503rfmd(priv->board_type)) {
706 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r3));
709 memcpy(priv->mac_addr, hwcfg->r3.mac_addr, ETH_ALEN);
710 priv->regulatory_domain = hwcfg->r3.regulatory_domain;
712 ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r5));
715 memcpy(priv->mac_addr, hwcfg->r5.mac_addr, ETH_ALEN);
716 priv->regulatory_domain = hwcfg->r5.regulatory_domain;
722 printk(KERN_ERR "%s: cannot get HW Config (error %d)\n",
723 priv->netdev->name, ret);
728 static struct reg_domain const *at76_get_reg_domain(u16 code)
731 static struct reg_domain const fd_tab[] = {
732 {0x10, "FCC (USA)", 0x7ff}, /* ch 1-11 */
733 {0x20, "IC (Canada)", 0x7ff}, /* ch 1-11 */
734 {0x30, "ETSI (most of Europe)", 0x1fff}, /* ch 1-13 */
735 {0x31, "Spain", 0x600}, /* ch 10-11 */
736 {0x32, "France", 0x1e00}, /* ch 10-13 */
737 {0x40, "MKK (Japan)", 0x2000}, /* ch 14 */
738 {0x41, "MKK1 (Japan)", 0x3fff}, /* ch 1-14 */
739 {0x50, "Israel", 0x3fc}, /* ch 3-9 */
740 {0x00, "<unknown>", 0xffffffff} /* ch 1-32 */
743 /* Last entry is fallback for unknown domain code */
744 for (i = 0; i < ARRAY_SIZE(fd_tab) - 1; i++)
745 if (code == fd_tab[i].code)
751 static inline int at76_get_mib(struct usb_device *udev, u16 mib, void *buf,
756 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
757 USB_TYPE_VENDOR | USB_DIR_IN |
758 USB_RECIP_INTERFACE, mib << 8, 0, buf, buf_size,
759 USB_CTRL_GET_TIMEOUT);
760 if (ret >= 0 && ret != buf_size)
765 /* Return positive number for status, negative for an error */
766 static inline int at76_get_cmd_status(struct usb_device *udev, u8 cmd)
771 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x22,
772 USB_TYPE_VENDOR | USB_DIR_IN |
773 USB_RECIP_INTERFACE, cmd, 0, stat_buf,
774 sizeof(stat_buf), USB_CTRL_GET_TIMEOUT);
781 static int at76_set_card_command(struct usb_device *udev, int cmd, void *buf,
785 struct at76_command *cmd_buf = kmalloc(sizeof(struct at76_command) +
786 buf_size, GFP_KERNEL);
792 cmd_buf->reserved = 0;
793 cmd_buf->size = cpu_to_le16(buf_size);
794 memcpy(cmd_buf->data, buf, buf_size);
796 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
797 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
799 sizeof(struct at76_command) + buf_size,
800 USB_CTRL_GET_TIMEOUT);
805 #define MAKE_CMD_STATUS_CASE(c) case (c): return #c
806 static const char *at76_get_cmd_status_string(u8 cmd_status)
808 switch (cmd_status) {
809 MAKE_CMD_STATUS_CASE(CMD_STATUS_IDLE);
810 MAKE_CMD_STATUS_CASE(CMD_STATUS_COMPLETE);
811 MAKE_CMD_STATUS_CASE(CMD_STATUS_UNKNOWN);
812 MAKE_CMD_STATUS_CASE(CMD_STATUS_INVALID_PARAMETER);
813 MAKE_CMD_STATUS_CASE(CMD_STATUS_FUNCTION_NOT_SUPPORTED);
814 MAKE_CMD_STATUS_CASE(CMD_STATUS_TIME_OUT);
815 MAKE_CMD_STATUS_CASE(CMD_STATUS_IN_PROGRESS);
816 MAKE_CMD_STATUS_CASE(CMD_STATUS_HOST_FAILURE);
817 MAKE_CMD_STATUS_CASE(CMD_STATUS_SCAN_FAILED);
823 /* Wait until the command is completed */
824 static int at76_wait_completion(struct at76_priv *priv, int cmd)
827 unsigned long timeout = jiffies + CMD_COMPLETION_TIMEOUT;
830 status = at76_get_cmd_status(priv->udev, cmd);
832 printk(KERN_ERR "%s: at76_get_cmd_status failed: %d\n",
833 priv->netdev->name, status);
837 at76_dbg(DBG_WAIT_COMPLETE,
838 "%s: Waiting on cmd %d, status = %d (%s)",
839 priv->netdev->name, cmd, status,
840 at76_get_cmd_status_string(status));
842 if (status != CMD_STATUS_IN_PROGRESS
843 && status != CMD_STATUS_IDLE)
846 schedule_timeout_interruptible(HZ / 10); /* 100 ms */
847 if (time_after(jiffies, timeout)) {
849 "%s: completion timeout for command %d\n",
850 priv->netdev->name, cmd);
859 static int at76_set_mib(struct at76_priv *priv, struct set_mib_buffer *buf)
863 ret = at76_set_card_command(priv->udev, CMD_SET_MIB, buf,
864 offsetof(struct set_mib_buffer,
869 ret = at76_wait_completion(priv, CMD_SET_MIB);
870 if (ret != CMD_STATUS_COMPLETE) {
872 "%s: set_mib: at76_wait_completion failed "
873 "with %d\n", priv->netdev->name, ret);
880 /* Return < 0 on error, == 0 if no command sent, == 1 if cmd sent */
881 static int at76_set_radio(struct at76_priv *priv, int enable)
886 if (priv->radio_on == enable)
889 cmd = enable ? CMD_RADIO_ON : CMD_RADIO_OFF;
891 ret = at76_set_card_command(priv->udev, cmd, NULL, 0);
893 printk(KERN_ERR "%s: at76_set_card_command(%d) failed: %d\n",
894 priv->netdev->name, cmd, ret);
898 priv->radio_on = enable;
902 /* Set current power save mode (AT76_PM_OFF/AT76_PM_ON/AT76_PM_SMART) */
903 static int at76_set_pm_mode(struct at76_priv *priv)
907 priv->mib_buf.type = MIB_MAC_MGMT;
908 priv->mib_buf.size = 1;
909 priv->mib_buf.index = offsetof(struct mib_mac_mgmt, power_mgmt_mode);
910 priv->mib_buf.data.byte = priv->pm_mode;
912 ret = at76_set_mib(priv, &priv->mib_buf);
914 printk(KERN_ERR "%s: set_mib (pm_mode) failed: %d\n",
915 priv->netdev->name, ret);
920 /* Set the association id for power save mode */
921 static int at76_set_associd(struct at76_priv *priv, u16 id)
925 priv->mib_buf.type = MIB_MAC_MGMT;
926 priv->mib_buf.size = 2;
927 priv->mib_buf.index = offsetof(struct mib_mac_mgmt, station_id);
928 priv->mib_buf.data.word = cpu_to_le16(id);
930 ret = at76_set_mib(priv, &priv->mib_buf);
932 printk(KERN_ERR "%s: set_mib (associd) failed: %d\n",
933 priv->netdev->name, ret);
938 /* Set the listen interval for power save mode */
939 static int at76_set_listen_interval(struct at76_priv *priv, u16 interval)
943 priv->mib_buf.type = MIB_MAC;
944 priv->mib_buf.size = 2;
945 priv->mib_buf.index = offsetof(struct mib_mac, listen_interval);
946 priv->mib_buf.data.word = cpu_to_le16(interval);
948 ret = at76_set_mib(priv, &priv->mib_buf);
951 "%s: set_mib (listen_interval) failed: %d\n",
952 priv->netdev->name, ret);
957 static int at76_set_preamble(struct at76_priv *priv, u8 type)
961 priv->mib_buf.type = MIB_LOCAL;
962 priv->mib_buf.size = 1;
963 priv->mib_buf.index = offsetof(struct mib_local, preamble_type);
964 priv->mib_buf.data.byte = type;
966 ret = at76_set_mib(priv, &priv->mib_buf);
968 printk(KERN_ERR "%s: set_mib (preamble) failed: %d\n",
969 priv->netdev->name, ret);
974 static int at76_set_frag(struct at76_priv *priv, u16 size)
978 priv->mib_buf.type = MIB_MAC;
979 priv->mib_buf.size = 2;
980 priv->mib_buf.index = offsetof(struct mib_mac, frag_threshold);
981 priv->mib_buf.data.word = cpu_to_le16(size);
983 ret = at76_set_mib(priv, &priv->mib_buf);
985 printk(KERN_ERR "%s: set_mib (frag threshold) failed: %d\n",
986 priv->netdev->name, ret);
991 static int at76_set_rts(struct at76_priv *priv, u16 size)
995 priv->mib_buf.type = MIB_MAC;
996 priv->mib_buf.size = 2;
997 priv->mib_buf.index = offsetof(struct mib_mac, rts_threshold);
998 priv->mib_buf.data.word = cpu_to_le16(size);
1000 ret = at76_set_mib(priv, &priv->mib_buf);
1002 printk(KERN_ERR "%s: set_mib (rts) failed: %d\n",
1003 priv->netdev->name, ret);
1008 static int at76_set_autorate_fallback(struct at76_priv *priv, int onoff)
1012 priv->mib_buf.type = MIB_LOCAL;
1013 priv->mib_buf.size = 1;
1014 priv->mib_buf.index = offsetof(struct mib_local, txautorate_fallback);
1015 priv->mib_buf.data.byte = onoff;
1017 ret = at76_set_mib(priv, &priv->mib_buf);
1019 printk(KERN_ERR "%s: set_mib (autorate fallback) failed: %d\n",
1020 priv->netdev->name, ret);
1025 static int at76_add_mac_address(struct at76_priv *priv, void *addr)
1029 priv->mib_buf.type = MIB_MAC_ADDR;
1030 priv->mib_buf.size = ETH_ALEN;
1031 priv->mib_buf.index = offsetof(struct mib_mac_addr, mac_addr);
1032 memcpy(priv->mib_buf.data.addr, addr, ETH_ALEN);
1034 ret = at76_set_mib(priv, &priv->mib_buf);
1036 printk(KERN_ERR "%s: set_mib (MAC_ADDR, mac_addr) failed: %d\n",
1037 priv->netdev->name, ret);
1042 static void at76_dump_mib_mac_addr(struct at76_priv *priv)
1046 struct mib_mac_addr *m = kmalloc(sizeof(struct mib_mac_addr),
1052 ret = at76_get_mib(priv->udev, MIB_MAC_ADDR, m,
1053 sizeof(struct mib_mac_addr));
1055 printk(KERN_ERR "%s: at76_get_mib (MAC_ADDR) failed: %d\n",
1056 priv->netdev->name, ret);
1060 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: mac_addr %s res 0x%x 0x%x",
1062 mac2str(m->mac_addr), m->res[0], m->res[1]);
1063 for (i = 0; i < ARRAY_SIZE(m->group_addr); i++)
1064 at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: group addr %d: %s, "
1065 "status %d", priv->netdev->name, i,
1066 mac2str(m->group_addr[i]), m->group_addr_status[i]);
1071 static void at76_dump_mib_mac_wep(struct at76_priv *priv)
1076 struct mib_mac_wep *m = kmalloc(sizeof(struct mib_mac_wep), GFP_KERNEL);
1081 ret = at76_get_mib(priv->udev, MIB_MAC_WEP, m,
1082 sizeof(struct mib_mac_wep));
1084 printk(KERN_ERR "%s: at76_get_mib (MAC_WEP) failed: %d\n",
1085 priv->netdev->name, ret);
1089 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: priv_invoked %u def_key_id %u "
1090 "key_len %u excl_unencr %u wep_icv_err %u wep_excluded %u "
1091 "encr_level %u key %d", priv->netdev->name,
1092 m->privacy_invoked, m->wep_default_key_id,
1093 m->wep_key_mapping_len, m->exclude_unencrypted,
1094 le32_to_cpu(m->wep_icv_error_count),
1095 le32_to_cpu(m->wep_excluded_count), m->encryption_level,
1096 m->wep_default_key_id);
1098 key_len = (m->encryption_level == 1) ?
1099 WEP_SMALL_KEY_LEN : WEP_LARGE_KEY_LEN;
1101 for (i = 0; i < WEP_KEYS; i++)
1102 at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: key %d: %s",
1103 priv->netdev->name, i,
1104 hex2str(m->wep_default_keyvalue[i], key_len));
1109 static void at76_dump_mib_mac_mgmt(struct at76_priv *priv)
1112 struct mib_mac_mgmt *m = kmalloc(sizeof(struct mib_mac_mgmt),
1118 ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, m,
1119 sizeof(struct mib_mac_mgmt));
1121 printk(KERN_ERR "%s: at76_get_mib (MAC_MGMT) failed: %d\n",
1122 priv->netdev->name, ret);
1126 at76_dbg(DBG_MIB, "%s: MIB MAC_MGMT: beacon_period %d CFP_max_duration "
1127 "%d medium_occupancy_limit %d station_id 0x%x ATIM_window %d "
1128 "CFP_mode %d privacy_opt_impl %d DTIM_period %d CFP_period %d "
1129 "current_bssid %s current_essid %s current_bss_type %d "
1130 "pm_mode %d ibss_change %d res %d "
1131 "multi_domain_capability_implemented %d "
1132 "international_roaming %d country_string %.3s",
1133 priv->netdev->name, le16_to_cpu(m->beacon_period),
1134 le16_to_cpu(m->CFP_max_duration),
1135 le16_to_cpu(m->medium_occupancy_limit),
1136 le16_to_cpu(m->station_id), le16_to_cpu(m->ATIM_window),
1137 m->CFP_mode, m->privacy_option_implemented, m->DTIM_period,
1138 m->CFP_period, mac2str(m->current_bssid),
1139 hex2str(m->current_essid, IW_ESSID_MAX_SIZE),
1140 m->current_bss_type, m->power_mgmt_mode, m->ibss_change,
1141 m->res, m->multi_domain_capability_implemented,
1142 m->multi_domain_capability_enabled, m->country_string);
1147 static void at76_dump_mib_mac(struct at76_priv *priv)
1150 struct mib_mac *m = kmalloc(sizeof(struct mib_mac), GFP_KERNEL);
1155 ret = at76_get_mib(priv->udev, MIB_MAC, m, sizeof(struct mib_mac));
1157 printk(KERN_ERR "%s: at76_get_mib (MAC) failed: %d\n",
1158 priv->netdev->name, ret);
1162 at76_dbg(DBG_MIB, "%s: MIB MAC: max_tx_msdu_lifetime %d "
1163 "max_rx_lifetime %d frag_threshold %d rts_threshold %d "
1164 "cwmin %d cwmax %d short_retry_time %d long_retry_time %d "
1165 "scan_type %d scan_channel %d probe_delay %u "
1166 "min_channel_time %d max_channel_time %d listen_int %d "
1167 "desired_ssid %s desired_bssid %s desired_bsstype %d",
1168 priv->netdev->name, le32_to_cpu(m->max_tx_msdu_lifetime),
1169 le32_to_cpu(m->max_rx_lifetime),
1170 le16_to_cpu(m->frag_threshold), le16_to_cpu(m->rts_threshold),
1171 le16_to_cpu(m->cwmin), le16_to_cpu(m->cwmax),
1172 m->short_retry_time, m->long_retry_time, m->scan_type,
1173 m->scan_channel, le16_to_cpu(m->probe_delay),
1174 le16_to_cpu(m->min_channel_time),
1175 le16_to_cpu(m->max_channel_time),
1176 le16_to_cpu(m->listen_interval),
1177 hex2str(m->desired_ssid, IW_ESSID_MAX_SIZE),
1178 mac2str(m->desired_bssid), m->desired_bsstype);
1183 static void at76_dump_mib_phy(struct at76_priv *priv)
1186 struct mib_phy *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1191 ret = at76_get_mib(priv->udev, MIB_PHY, m, sizeof(struct mib_phy));
1193 printk(KERN_ERR "%s: at76_get_mib (PHY) failed: %d\n",
1194 priv->netdev->name, ret);
1198 at76_dbg(DBG_MIB, "%s: MIB PHY: ed_threshold %d slot_time %d "
1199 "sifs_time %d preamble_length %d plcp_header_length %d "
1200 "mpdu_max_length %d cca_mode_supported %d operation_rate_set "
1201 "0x%x 0x%x 0x%x 0x%x channel_id %d current_cca_mode %d "
1202 "phy_type %d current_reg_domain %d",
1203 priv->netdev->name, le32_to_cpu(m->ed_threshold),
1204 le16_to_cpu(m->slot_time), le16_to_cpu(m->sifs_time),
1205 le16_to_cpu(m->preamble_length),
1206 le16_to_cpu(m->plcp_header_length),
1207 le16_to_cpu(m->mpdu_max_length),
1208 le16_to_cpu(m->cca_mode_supported), m->operation_rate_set[0],
1209 m->operation_rate_set[1], m->operation_rate_set[2],
1210 m->operation_rate_set[3], m->channel_id, m->current_cca_mode,
1211 m->phy_type, m->current_reg_domain);
1216 static void at76_dump_mib_local(struct at76_priv *priv)
1219 struct mib_local *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1224 ret = at76_get_mib(priv->udev, MIB_LOCAL, m, sizeof(struct mib_local));
1226 printk(KERN_ERR "%s: at76_get_mib (LOCAL) failed: %d\n",
1227 priv->netdev->name, ret);
1231 at76_dbg(DBG_MIB, "%s: MIB LOCAL: beacon_enable %d "
1232 "txautorate_fallback %d ssid_size %d promiscuous_mode %d "
1233 "preamble_type %d", priv->netdev->name, m->beacon_enable,
1234 m->txautorate_fallback, m->ssid_size, m->promiscuous_mode,
1240 static void at76_dump_mib_mdomain(struct at76_priv *priv)
1243 struct mib_mdomain *m = kmalloc(sizeof(struct mib_mdomain), GFP_KERNEL);
1248 ret = at76_get_mib(priv->udev, MIB_MDOMAIN, m,
1249 sizeof(struct mib_mdomain));
1251 printk(KERN_ERR "%s: at76_get_mib (MDOMAIN) failed: %d\n",
1252 priv->netdev->name, ret);
1256 at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: channel_list %s",
1258 hex2str(m->channel_list, sizeof(m->channel_list)));
1260 at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: tx_powerlevel %s",
1262 hex2str(m->tx_powerlevel, sizeof(m->tx_powerlevel)));
1267 static int at76_get_current_bssid(struct at76_priv *priv)
1270 struct mib_mac_mgmt *mac_mgmt =
1271 kmalloc(sizeof(struct mib_mac_mgmt), GFP_KERNEL);
1278 ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, mac_mgmt,
1279 sizeof(struct mib_mac_mgmt));
1281 printk(KERN_ERR "%s: at76_get_mib failed: %d\n",
1282 priv->netdev->name, ret);
1285 memcpy(priv->bssid, mac_mgmt->current_bssid, ETH_ALEN);
1286 printk(KERN_INFO "%s: using BSSID %s\n", priv->netdev->name,
1287 mac2str(priv->bssid));
1294 static int at76_get_current_channel(struct at76_priv *priv)
1297 struct mib_phy *phy = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
1303 ret = at76_get_mib(priv->udev, MIB_PHY, phy, sizeof(struct mib_phy));
1305 printk(KERN_ERR "%s: at76_get_mib(MIB_PHY) failed: %d\n",
1306 priv->netdev->name, ret);
1309 priv->channel = phy->channel_id;
1317 * at76_start_scan - start a scan
1319 * @use_essid - use the configured ESSID in non passive mode
1321 static int at76_start_scan(struct at76_priv *priv, int use_essid)
1323 struct at76_req_scan scan;
1325 memset(&scan, 0, sizeof(struct at76_req_scan));
1326 memset(scan.bssid, 0xff, ETH_ALEN);
1329 memcpy(scan.essid, priv->essid, IW_ESSID_MAX_SIZE);
1330 scan.essid_size = priv->essid_size;
1332 scan.essid_size = 0;
1334 /* jal: why should we start at a certain channel? we do scan the whole
1335 range allowed by reg domain. */
1336 scan.channel = priv->channel;
1338 /* atmelwlandriver differs between scan type 0 and 1 (active/passive)
1339 For ad-hoc mode, it uses type 0 only. */
1340 scan.scan_type = priv->scan_mode;
1342 /* INFO: For probe_delay, not multiplying by 1024 as this will be
1343 slightly less than min_channel_time
1344 (per spec: probe delay < min. channel time) */
1345 scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
1346 scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
1347 scan.probe_delay = cpu_to_le16(priv->scan_min_time * 1000);
1348 scan.international_scan = 0;
1350 /* other values are set to 0 for type 0 */
1352 at76_dbg(DBG_PROGRESS, "%s: start_scan (use_essid = %d, intl = %d, "
1353 "channel = %d, probe_delay = %d, scan_min_time = %d, "
1354 "scan_max_time = %d)",
1355 priv->netdev->name, use_essid,
1356 scan.international_scan, scan.channel,
1357 le16_to_cpu(scan.probe_delay),
1358 le16_to_cpu(scan.min_channel_time),
1359 le16_to_cpu(scan.max_channel_time));
1361 return at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1364 /* Enable monitor mode */
1365 static int at76_start_monitor(struct at76_priv *priv)
1367 struct at76_req_scan scan;
1370 memset(&scan, 0, sizeof(struct at76_req_scan));
1371 memset(scan.bssid, 0xff, ETH_ALEN);
1373 scan.channel = priv->channel;
1374 scan.scan_type = SCAN_TYPE_PASSIVE;
1375 scan.international_scan = 0;
1377 ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
1379 ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
1384 static int at76_start_ibss(struct at76_priv *priv)
1386 struct at76_req_ibss bss;
1389 WARN_ON(priv->mac_state != MAC_OWN_IBSS);
1390 if (priv->mac_state != MAC_OWN_IBSS)
1393 memset(&bss, 0, sizeof(struct at76_req_ibss));
1394 memset(bss.bssid, 0xff, ETH_ALEN);
1395 memcpy(bss.essid, priv->essid, IW_ESSID_MAX_SIZE);
1396 bss.essid_size = priv->essid_size;
1397 bss.bss_type = ADHOC_MODE;
1398 bss.channel = priv->channel;
1400 ret = at76_set_card_command(priv->udev, CMD_START_IBSS, &bss,
1401 sizeof(struct at76_req_ibss));
1403 printk(KERN_ERR "%s: start_ibss failed: %d\n",
1404 priv->netdev->name, ret);
1408 ret = at76_wait_completion(priv, CMD_START_IBSS);
1409 if (ret != CMD_STATUS_COMPLETE) {
1410 printk(KERN_ERR "%s: start_ibss failed to complete, %d\n",
1411 priv->netdev->name, ret);
1415 ret = at76_get_current_bssid(priv);
1419 ret = at76_get_current_channel(priv);
1423 /* not sure what this is good for ??? */
1424 priv->mib_buf.type = MIB_MAC_MGMT;
1425 priv->mib_buf.size = 1;
1426 priv->mib_buf.index = offsetof(struct mib_mac_mgmt, ibss_change);
1427 priv->mib_buf.data.byte = 0;
1429 ret = at76_set_mib(priv, &priv->mib_buf);
1431 printk(KERN_ERR "%s: set_mib (ibss change ok) failed: %d\n",
1432 priv->netdev->name, ret);
1436 netif_carrier_on(priv->netdev);
1437 netif_start_queue(priv->netdev);
1441 /* Request card to join BSS in managed or ad-hoc mode */
1442 static int at76_join_bss(struct at76_priv *priv, struct bss_info *ptr)
1444 struct at76_req_join join;
1448 memset(&join, 0, sizeof(struct at76_req_join));
1449 memcpy(join.bssid, ptr->bssid, ETH_ALEN);
1450 memcpy(join.essid, ptr->ssid, ptr->ssid_len);
1451 join.essid_size = ptr->ssid_len;
1452 join.bss_type = (priv->iw_mode == IW_MODE_ADHOC ? 1 : 2);
1453 join.channel = ptr->channel;
1454 join.timeout = cpu_to_le16(2000);
1456 at76_dbg(DBG_PROGRESS,
1457 "%s join addr %s ssid %s type %d ch %d timeout %d",
1458 priv->netdev->name, mac2str(join.bssid), join.essid,
1459 join.bss_type, join.channel, le16_to_cpu(join.timeout));
1460 return at76_set_card_command(priv->udev, CMD_JOIN, &join,
1461 sizeof(struct at76_req_join));
1464 /* Calculate padding from txbuf->wlength (which excludes the USB TX header),
1465 likely to compensate a flaw in the AT76C503A USB part ... */
1466 static inline int at76_calc_padding(int wlen)
1468 /* add the USB TX header */
1469 wlen += AT76_TX_HDRLEN;
1477 return 64 + 50 - wlen;
1482 /* We are doing a lot of things here in an interrupt. Need
1483 a bh handler (Watching TV with a TV card is probably
1484 a good test: if you see flickers, we are doing too much.
1485 Currently I do see flickers... even with our tasklet :-( )
1486 Maybe because the bttv driver and usb-uhci use the same interrupt
1488 /* Or maybe because our BH handler is preempting bttv's BH handler.. BHs don't
1489 * solve everything.. (alex) */
1490 static void at76_rx_callback(struct urb *urb)
1492 struct at76_priv *priv = urb->context;
1494 priv->rx_tasklet.data = (unsigned long)urb;
1495 tasklet_schedule(&priv->rx_tasklet);
1499 static void at76_tx_callback(struct urb *urb)
1501 struct at76_priv *priv = urb->context;
1502 struct net_device_stats *stats = &priv->stats;
1503 unsigned long flags;
1504 struct at76_tx_buffer *mgmt_buf;
1507 switch (urb->status) {
1509 stats->tx_packets++;
1513 /* urb has been unlinked */
1516 at76_dbg(DBG_URB, "%s - nonzero tx status received: %d",
1517 __func__, urb->status);
1522 spin_lock_irqsave(&priv->mgmt_spinlock, flags);
1523 mgmt_buf = priv->next_mgmt_bulk;
1524 priv->next_mgmt_bulk = NULL;
1525 spin_unlock_irqrestore(&priv->mgmt_spinlock, flags);
1528 netif_wake_queue(priv->netdev);
1532 /* we don't copy the padding bytes, but add them
1534 memcpy(priv->bulk_out_buffer, mgmt_buf,
1535 le16_to_cpu(mgmt_buf->wlength) + AT76_TX_HDRLEN);
1536 usb_fill_bulk_urb(priv->tx_urb, priv->udev, priv->tx_pipe,
1537 priv->bulk_out_buffer,
1538 le16_to_cpu(mgmt_buf->wlength) + mgmt_buf->padding +
1539 AT76_TX_HDRLEN, at76_tx_callback, priv);
1540 ret = usb_submit_urb(priv->tx_urb, GFP_ATOMIC);
1542 printk(KERN_ERR "%s: error in tx submit urb: %d\n",
1543 priv->netdev->name, ret);
1548 /* Send a management frame on bulk-out. txbuf->wlength must be set */
1549 static int at76_tx_mgmt(struct at76_priv *priv, struct at76_tx_buffer *txbuf)
1551 unsigned long flags;
1554 void *oldbuf = NULL;
1556 netif_carrier_off(priv->netdev); /* stop netdev watchdog */
1557 netif_stop_queue(priv->netdev); /* stop tx data packets */
1559 spin_lock_irqsave(&priv->mgmt_spinlock, flags);
1561 urb_status = priv->tx_urb->status;
1562 if (urb_status == -EINPROGRESS) {
1563 /* cannot transmit now, put in the queue */
1564 oldbuf = priv->next_mgmt_bulk;
1565 priv->next_mgmt_bulk = txbuf;
1567 spin_unlock_irqrestore(&priv->mgmt_spinlock, flags);
1570 /* a data/mgmt tx is already pending in the URB -
1571 if this is no error in some situations we must
1572 implement a queue or silently modify the old msg */
1573 printk(KERN_ERR "%s: removed pending mgmt buffer %s\n",
1574 priv->netdev->name, hex2str(oldbuf, 64));
1579 txbuf->tx_rate = TX_RATE_1MBIT;
1580 txbuf->padding = at76_calc_padding(le16_to_cpu(txbuf->wlength));
1581 memset(txbuf->reserved, 0, sizeof(txbuf->reserved));
1583 if (priv->next_mgmt_bulk)
1584 printk(KERN_ERR "%s: URB status %d, but mgmt is pending\n",
1585 priv->netdev->name, urb_status);
1587 at76_dbg(DBG_TX_MGMT,
1588 "%s: tx mgmt: wlen %d tx_rate %d pad %d %s",
1589 priv->netdev->name, le16_to_cpu(txbuf->wlength),
1590 txbuf->tx_rate, txbuf->padding,
1591 hex2str(txbuf->packet, le16_to_cpu(txbuf->wlength)));
1593 /* txbuf was not consumed above -> send mgmt msg immediately */
1594 memcpy(priv->bulk_out_buffer, txbuf,
1595 le16_to_cpu(txbuf->wlength) + AT76_TX_HDRLEN);
1596 usb_fill_bulk_urb(priv->tx_urb, priv->udev, priv->tx_pipe,
1597 priv->bulk_out_buffer,
1598 le16_to_cpu(txbuf->wlength) + txbuf->padding +
1599 AT76_TX_HDRLEN, at76_tx_callback, priv);
1600 ret = usb_submit_urb(priv->tx_urb, GFP_ATOMIC);
1602 printk(KERN_ERR "%s: error in tx submit urb: %d\n",
1603 priv->netdev->name, ret);
1610 /* Go to the next information element */
1611 static inline void next_ie(struct ieee80211_info_element **ie)
1613 *ie = (struct ieee80211_info_element *)(&(*ie)->data[(*ie)->len]);
1616 /* Challenge is the challenge string (in TLV format)
1617 we got with seq_nr 2 for shared secret authentication only and
1618 send in seq_nr 3 WEP encrypted to prove we have the correct WEP key;
1619 otherwise it is NULL */
1620 static int at76_auth_req(struct at76_priv *priv, struct bss_info *bss,
1621 int seq_nr, struct ieee80211_info_element *challenge)
1623 struct at76_tx_buffer *tx_buffer;
1624 struct ieee80211_hdr_3addr *mgmt;
1625 struct ieee80211_auth *req;
1626 int buf_len = (seq_nr != 3 ? AUTH_FRAME_SIZE :
1627 AUTH_FRAME_SIZE + 1 + 1 + challenge->len);
1630 BUG_ON(seq_nr == 3 && !challenge);
1631 tx_buffer = kmalloc(buf_len + MAX_PADDING_SIZE, GFP_ATOMIC);
1635 req = (struct ieee80211_auth *)tx_buffer->packet;
1636 mgmt = &req->header;
1638 /* make wireless header */
1639 /* first auth msg is not encrypted, only the second (seq_nr == 3) */
1641 cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH |
1642 (seq_nr == 3 ? IEEE80211_FCTL_PROTECTED : 0));
1644 mgmt->duration_id = cpu_to_le16(0x8000);
1645 memcpy(mgmt->addr1, bss->bssid, ETH_ALEN);
1646 memcpy(mgmt->addr2, priv->netdev->dev_addr, ETH_ALEN);
1647 memcpy(mgmt->addr3, bss->bssid, ETH_ALEN);
1648 mgmt->seq_ctl = cpu_to_le16(0);
1650 req->algorithm = cpu_to_le16(priv->auth_mode);
1651 req->transaction = cpu_to_le16(seq_nr);
1652 req->status = cpu_to_le16(0);
1655 memcpy(req->info_element, challenge, 1 + 1 + challenge->len);
1657 /* init. at76_priv tx header */
1658 tx_buffer->wlength = cpu_to_le16(buf_len - AT76_TX_HDRLEN);
1659 at76_dbg(DBG_TX_MGMT, "%s: AuthReq bssid %s alg %d seq_nr %d",
1660 priv->netdev->name, mac2str(mgmt->addr3),
1661 le16_to_cpu(req->algorithm), le16_to_cpu(req->transaction));
1663 at76_dbg(DBG_TX_MGMT, "%s: AuthReq challenge: %s ...",
1664 priv->netdev->name, hex2str(req->info_element, 18));
1666 /* either send immediately (if no data tx is pending
1667 or put it in pending list */
1668 return at76_tx_mgmt(priv, tx_buffer);
1671 static int at76_assoc_req(struct at76_priv *priv, struct bss_info *bss)
1673 struct at76_tx_buffer *tx_buffer;
1674 struct ieee80211_hdr_3addr *mgmt;
1675 struct ieee80211_assoc_request *req;
1676 struct ieee80211_info_element *ie;
1683 tx_buffer = kmalloc(ASSOCREQ_MAX_SIZE + MAX_PADDING_SIZE, GFP_ATOMIC);
1687 req = (struct ieee80211_assoc_request *)tx_buffer->packet;
1688 mgmt = &req->header;
1689 ie = req->info_element;
1691 /* make wireless header */
1692 mgmt->frame_ctl = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1693 IEEE80211_STYPE_ASSOC_REQ);
1695 mgmt->duration_id = cpu_to_le16(0x8000);
1696 memcpy(mgmt->addr1, bss->bssid, ETH_ALEN);
1697 memcpy(mgmt->addr2, priv->netdev->dev_addr, ETH_ALEN);
1698 memcpy(mgmt->addr3, bss->bssid, ETH_ALEN);
1699 mgmt->seq_ctl = cpu_to_le16(0);
1701 /* we must set the Privacy bit in the capabilities to assure an
1702 Agere-based AP with optional WEP transmits encrypted frames
1703 to us. AP only set the Privacy bit in their capabilities
1704 if WEP is mandatory in the BSS! */
1706 if (priv->wep_enabled)
1707 capa |= WLAN_CAPABILITY_PRIVACY;
1708 if (priv->preamble_type != PREAMBLE_TYPE_LONG)
1709 capa |= WLAN_CAPABILITY_SHORT_PREAMBLE;
1710 req->capability = cpu_to_le16(capa);
1712 req->listen_interval = cpu_to_le16(2 * bss->beacon_interval);
1714 /* write TLV data elements */
1716 ie->id = MFIE_TYPE_SSID;
1717 ie->len = bss->ssid_len;
1718 memcpy(ie->data, bss->ssid, bss->ssid_len);
1721 ie->id = MFIE_TYPE_RATES;
1722 ie->len = sizeof(hw_rates);
1723 memcpy(ie->data, hw_rates, sizeof(hw_rates));
1724 next_ie(&ie); /* ie points behind the supp_rates field */
1726 /* init. at76_priv tx header */
1727 tx_buffer->wlength = cpu_to_le16((u8 *)ie - (u8 *)mgmt);
1729 ie = req->info_element;
1731 essid_len = min_t(int, IW_ESSID_MAX_SIZE, ie->len);
1733 next_ie(&ie); /* points to IE of rates now */
1734 at76_dbg(DBG_TX_MGMT,
1735 "%s: AssocReq bssid %s capa 0x%04x ssid %.*s rates %s",
1736 priv->netdev->name, mac2str(mgmt->addr3),
1737 le16_to_cpu(req->capability), essid_len, essid,
1738 hex2str(ie->data, ie->len));
1740 /* either send immediately (if no data tx is pending
1741 or put it in pending list */
1742 return at76_tx_mgmt(priv, tx_buffer);
1745 /* We got to check the bss_list for old entries */
1746 static void at76_bss_list_timeout(unsigned long par)
1748 struct at76_priv *priv = (struct at76_priv *)par;
1749 unsigned long flags;
1750 struct list_head *lptr, *nptr;
1751 struct bss_info *ptr;
1753 spin_lock_irqsave(&priv->bss_list_spinlock, flags);
1755 list_for_each_safe(lptr, nptr, &priv->bss_list) {
1757 ptr = list_entry(lptr, struct bss_info, list);
1759 if (ptr != priv->curr_bss
1760 && time_after(jiffies, ptr->last_rx + BSS_LIST_TIMEOUT)) {
1761 at76_dbg(DBG_BSS_TABLE_RM,
1762 "%s: bss_list: removing old BSS %s ch %d",
1763 priv->netdev->name, mac2str(ptr->bssid),
1765 list_del(&ptr->list);
1769 spin_unlock_irqrestore(&priv->bss_list_spinlock, flags);
1770 /* restart the timer */
1771 mod_timer(&priv->bss_list_timer, jiffies + BSS_LIST_TIMEOUT);
1774 static inline void at76_set_mac_state(struct at76_priv *priv,
1775 enum mac_state mac_state)
1777 at76_dbg(DBG_MAC_STATE, "%s state: %s", priv->netdev->name,
1778 mac_states[mac_state]);
1779 priv->mac_state = mac_state;
1782 static void at76_dump_bss_table(struct at76_priv *priv)
1784 struct bss_info *ptr;
1785 unsigned long flags;
1786 struct list_head *lptr;
1788 spin_lock_irqsave(&priv->bss_list_spinlock, flags);
1790 at76_dbg(DBG_BSS_TABLE, "%s BSS table (curr=%p):", priv->netdev->name,
1793 list_for_each(lptr, &priv->bss_list) {
1794 ptr = list_entry(lptr, struct bss_info, list);
1795 at76_dbg(DBG_BSS_TABLE, "0x%p: bssid %s channel %d ssid %.*s "
1796 "(%s) capa 0x%04x rates %s rssi %d link %d noise %d",
1797 ptr, mac2str(ptr->bssid), ptr->channel, ptr->ssid_len,
1798 ptr->ssid, hex2str(ptr->ssid, ptr->ssid_len),
1799 ptr->capa, hex2str(ptr->rates, ptr->rates_len),
1800 ptr->rssi, ptr->link_qual, ptr->noise_level);
1802 spin_unlock_irqrestore(&priv->bss_list_spinlock, flags);
1805 /* Called upon successful association to mark interface as connected */
1806 static void at76_work_assoc_done(struct work_struct *work)
1808 struct at76_priv *priv = container_of(work, struct at76_priv,
1811 mutex_lock(&priv->mtx);
1813 WARN_ON(priv->mac_state != MAC_ASSOC);
1814 WARN_ON(!priv->curr_bss);
1815 if (priv->mac_state != MAC_ASSOC || !priv->curr_bss)
1818 if (priv->iw_mode == IW_MODE_INFRA) {
1819 if (priv->pm_mode != AT76_PM_OFF) {
1820 /* calculate the listen interval in units of
1821 beacon intervals of the curr_bss */
1822 u32 pm_period_beacon = (priv->pm_period >> 10) /
1823 priv->curr_bss->beacon_interval;
1825 pm_period_beacon = max(pm_period_beacon, 2u);
1826 pm_period_beacon = min(pm_period_beacon, 0xffffu);
1829 "%s: pm_mode %d assoc id 0x%x listen int %d",
1830 priv->netdev->name, priv->pm_mode,
1831 priv->assoc_id, pm_period_beacon);
1833 at76_set_associd(priv, priv->assoc_id);
1834 at76_set_listen_interval(priv, (u16)pm_period_beacon);
1836 schedule_delayed_work(&priv->dwork_beacon, BEACON_TIMEOUT);
1838 at76_set_pm_mode(priv);
1840 netif_carrier_on(priv->netdev);
1841 netif_wake_queue(priv->netdev);
1842 at76_set_mac_state(priv, MAC_CONNECTED);
1843 at76_iwevent_bss_connect(priv->netdev, priv->curr_bss->bssid);
1844 at76_dbg(DBG_PROGRESS, "%s: connected to BSSID %s",
1845 priv->netdev->name, mac2str(priv->curr_bss->bssid));
1848 mutex_unlock(&priv->mtx);
1851 /* We only store the new mac address in netdev struct,
1852 it gets set when the netdev is opened. */
1853 static int at76_set_mac_address(struct net_device *netdev, void *addr)
1855 struct sockaddr *mac = addr;
1856 memcpy(netdev->dev_addr, mac->sa_data, ETH_ALEN);
1860 static struct net_device_stats *at76_get_stats(struct net_device *netdev)
1862 struct at76_priv *priv = netdev_priv(netdev);
1863 return &priv->stats;
1866 static struct iw_statistics *at76_get_wireless_stats(struct net_device *netdev)
1868 struct at76_priv *priv = netdev_priv(netdev);
1870 at76_dbg(DBG_IOCTL, "RETURN qual %d level %d noise %d updated %d",
1871 priv->wstats.qual.qual, priv->wstats.qual.level,
1872 priv->wstats.qual.noise, priv->wstats.qual.updated);
1874 return &priv->wstats;
1877 static void at76_set_multicast(struct net_device *netdev)
1879 struct at76_priv *priv = netdev_priv(netdev);
1882 promisc = ((netdev->flags & IFF_PROMISC) != 0);
1883 if (promisc != priv->promisc) {
1884 /* This gets called in interrupt, must reschedule */
1885 priv->promisc = promisc;
1886 schedule_work(&priv->work_set_promisc);
1890 /* Stop all network activity, flush all pending tasks */
1891 static void at76_quiesce(struct at76_priv *priv)
1893 unsigned long flags;
1895 netif_stop_queue(priv->netdev);
1896 netif_carrier_off(priv->netdev);
1898 at76_set_mac_state(priv, MAC_INIT);
1900 cancel_delayed_work(&priv->dwork_get_scan);
1901 cancel_delayed_work(&priv->dwork_beacon);
1902 cancel_delayed_work(&priv->dwork_auth);
1903 cancel_delayed_work(&priv->dwork_assoc);
1904 cancel_delayed_work(&priv->dwork_restart);
1906 spin_lock_irqsave(&priv->mgmt_spinlock, flags);
1907 kfree(priv->next_mgmt_bulk);
1908 priv->next_mgmt_bulk = NULL;
1909 spin_unlock_irqrestore(&priv->mgmt_spinlock, flags);
1912 /*******************************************************************************
1913 * at76_priv implementations of iw_handler functions:
1915 static int at76_iw_handler_commit(struct net_device *netdev,
1916 struct iw_request_info *info,
1917 void *null, char *extra)
1919 struct at76_priv *priv = netdev_priv(netdev);
1921 at76_dbg(DBG_IOCTL, "%s %s: restarting the device", netdev->name,
1924 if (priv->mac_state != MAC_INIT)
1927 /* Wait half second before the restart to process subsequent
1928 * requests from the same iwconfig in a single restart */
1929 schedule_delayed_work(&priv->dwork_restart, HZ / 2);
1934 static int at76_iw_handler_get_name(struct net_device *netdev,
1935 struct iw_request_info *info,
1936 char *name, char *extra)
1938 strcpy(name, "IEEE 802.11b");
1939 at76_dbg(DBG_IOCTL, "%s: SIOCGIWNAME - name %s", netdev->name, name);
1943 static int at76_iw_handler_set_freq(struct net_device *netdev,
1944 struct iw_request_info *info,
1945 struct iw_freq *freq, char *extra)
1947 struct at76_priv *priv = netdev_priv(netdev);
1949 int ret = -EIWCOMMIT;
1950 at76_dbg(DBG_IOCTL, "%s: SIOCSIWFREQ - freq.m %d freq.e %d",
1951 netdev->name, freq->m, freq->e);
1953 if ((freq->e == 0) && (freq->m <= 1000))
1954 /* Setting by channel number */
1957 /* Setting by frequency - search the table */
1961 for (i = 0; i < (6 - freq->e); i++)
1964 for (i = 0; i < NUM_CHANNELS; i++) {
1965 if (freq->m == (channel_frequency[i] * mult))
1970 if (chan < 1 || !priv->domain)
1971 /* non-positive channels are invalid
1972 * we need a domain info to set the channel
1973 * either that or an invalid frequency was
1974 * provided by the user */
1976 else if (!(priv->domain->channel_map & (1 << (chan - 1)))) {
1977 printk(KERN_INFO "%s: channel %d not allowed for domain %s\n",
1978 priv->netdev->name, chan, priv->domain->name);
1982 if (ret == -EIWCOMMIT) {
1983 priv->channel = chan;
1984 at76_dbg(DBG_IOCTL, "%s: SIOCSIWFREQ - ch %d", netdev->name,
1991 static int at76_iw_handler_get_freq(struct net_device *netdev,
1992 struct iw_request_info *info,
1993 struct iw_freq *freq, char *extra)
1995 struct at76_priv *priv = netdev_priv(netdev);
1997 freq->m = priv->channel;
2001 at76_dbg(DBG_IOCTL, "%s: SIOCGIWFREQ - freq %ld x 10e%d",
2002 netdev->name, channel_frequency[priv->channel - 1], 6);
2004 at76_dbg(DBG_IOCTL, "%s: SIOCGIWFREQ - ch %d", netdev->name,
2010 static int at76_iw_handler_set_mode(struct net_device *netdev,
2011 struct iw_request_info *info,
2012 __u32 *mode, char *extra)
2014 struct at76_priv *priv = netdev_priv(netdev);
2016 at76_dbg(DBG_IOCTL, "%s: SIOCSIWMODE - %d", netdev->name, *mode);
2018 if ((*mode != IW_MODE_ADHOC) && (*mode != IW_MODE_INFRA) &&
2019 (*mode != IW_MODE_MONITOR))
2022 priv->iw_mode = *mode;
2023 if (priv->iw_mode != IW_MODE_INFRA)
2024 priv->pm_mode = AT76_PM_OFF;
2029 static int at76_iw_handler_get_mode(struct net_device *netdev,
2030 struct iw_request_info *info,
2031 __u32 *mode, char *extra)
2033 struct at76_priv *priv = netdev_priv(netdev);
2035 *mode = priv->iw_mode;
2037 at76_dbg(DBG_IOCTL, "%s: SIOCGIWMODE - %d", netdev->name, *mode);
2042 static int at76_iw_handler_get_range(struct net_device *netdev,
2043 struct iw_request_info *info,
2044 struct iw_point *data, char *extra)
2046 /* inspired by atmel.c */
2047 struct at76_priv *priv = netdev_priv(netdev);
2048 struct iw_range *range = (struct iw_range *)extra;
2051 data->length = sizeof(struct iw_range);
2052 memset(range, 0, sizeof(struct iw_range));
2054 /* TODO: range->throughput = xxxxxx; */
2056 range->min_nwid = 0x0000;
2057 range->max_nwid = 0x0000;
2059 /* this driver doesn't maintain sensitivity information */
2060 range->sensitivity = 0;
2062 range->max_qual.qual = 100;
2063 range->max_qual.level = 100;
2064 range->max_qual.noise = 0;
2065 range->max_qual.updated = IW_QUAL_NOISE_INVALID;
2067 range->avg_qual.qual = 50;
2068 range->avg_qual.level = 50;
2069 range->avg_qual.noise = 0;
2070 range->avg_qual.updated = IW_QUAL_NOISE_INVALID;
2072 range->bitrate[0] = 1000000;
2073 range->bitrate[1] = 2000000;
2074 range->bitrate[2] = 5500000;
2075 range->bitrate[3] = 11000000;
2076 range->num_bitrates = 4;
2079 range->max_rts = MAX_RTS_THRESHOLD;
2081 range->min_frag = MIN_FRAG_THRESHOLD;
2082 range->max_frag = MAX_FRAG_THRESHOLD;
2084 range->pmp_flags = IW_POWER_PERIOD;
2085 range->pmt_flags = IW_POWER_ON;
2086 range->pm_capa = IW_POWER_PERIOD | IW_POWER_ALL_R;
2088 range->encoding_size[0] = WEP_SMALL_KEY_LEN;
2089 range->encoding_size[1] = WEP_LARGE_KEY_LEN;
2090 range->num_encoding_sizes = 2;
2091 range->max_encoding_tokens = WEP_KEYS;
2093 /* both WL-240U and Linksys WUSB11 v2.6 specify 15 dBm as output power
2094 - take this for all (ignore antenna gains) */
2095 range->txpower[0] = 15;
2096 range->num_txpower = 1;
2097 range->txpower_capa = IW_TXPOW_DBM;
2099 range->we_version_source = WIRELESS_EXT;
2100 range->we_version_compiled = WIRELESS_EXT;
2102 /* same as the values used in atmel.c */
2103 range->retry_capa = IW_RETRY_LIMIT;
2104 range->retry_flags = IW_RETRY_LIMIT;
2105 range->r_time_flags = 0;
2106 range->min_retry = 1;
2107 range->max_retry = 255;
2109 range->num_channels = NUM_CHANNELS;
2110 range->num_frequency = 0;
2112 for (i = 0; i < NUM_CHANNELS; i++) {
2113 /* test if channel map bit is raised */
2114 if (priv->domain->channel_map & (0x1 << i)) {
2115 range->num_frequency += 1;
2117 range->freq[i].i = i + 1;
2118 range->freq[i].m = channel_frequency[i] * 100000;
2119 range->freq[i].e = 1; /* freq * 10^1 */
2123 at76_dbg(DBG_IOCTL, "%s: SIOCGIWRANGE", netdev->name);
2128 static int at76_iw_handler_set_spy(struct net_device *netdev,
2129 struct iw_request_info *info,
2130 struct iw_point *data, char *extra)
2132 struct at76_priv *priv = netdev_priv(netdev);
2135 at76_dbg(DBG_IOCTL, "%s: SIOCSIWSPY - number of addresses %d",
2136 netdev->name, data->length);
2138 spin_lock_bh(&priv->spy_spinlock);
2139 ret = iw_handler_set_spy(priv->netdev, info, (union iwreq_data *)data,
2141 spin_unlock_bh(&priv->spy_spinlock);
2146 static int at76_iw_handler_get_spy(struct net_device *netdev,
2147 struct iw_request_info *info,
2148 struct iw_point *data, char *extra)
2151 struct at76_priv *priv = netdev_priv(netdev);
2154 spin_lock_bh(&priv->spy_spinlock);
2155 ret = iw_handler_get_spy(priv->netdev, info,
2156 (union iwreq_data *)data, extra);
2157 spin_unlock_bh(&priv->spy_spinlock);
2159 at76_dbg(DBG_IOCTL, "%s: SIOCGIWSPY - number of addresses %d",
2160 netdev->name, data->length);
2165 static int at76_iw_handler_set_thrspy(struct net_device *netdev,
2166 struct iw_request_info *info,
2167 struct iw_point *data, char *extra)
2169 struct at76_priv *priv = netdev_priv(netdev);
2172 at76_dbg(DBG_IOCTL, "%s: SIOCSIWTHRSPY - number of addresses %d)",
2173 netdev->name, data->length);
2175 spin_lock_bh(&priv->spy_spinlock);
2176 ret = iw_handler_set_thrspy(netdev, info, (union iwreq_data *)data,
2178 spin_unlock_bh(&priv->spy_spinlock);
2183 static int at76_iw_handler_get_thrspy(struct net_device *netdev,
2184 struct iw_request_info *info,
2185 struct iw_point *data, char *extra)
2187 struct at76_priv *priv = netdev_priv(netdev);
2190 spin_lock_bh(&priv->spy_spinlock);
2191 ret = iw_handler_get_thrspy(netdev, info, (union iwreq_data *)data,
2193 spin_unlock_bh(&priv->spy_spinlock);
2195 at76_dbg(DBG_IOCTL, "%s: SIOCGIWTHRSPY - number of addresses %d)",
2196 netdev->name, data->length);
2201 static int at76_iw_handler_set_wap(struct net_device *netdev,
2202 struct iw_request_info *info,
2203 struct sockaddr *ap_addr, char *extra)
2205 struct at76_priv *priv = netdev_priv(netdev);
2207 at76_dbg(DBG_IOCTL, "%s: SIOCSIWAP - wap/bssid %s", netdev->name,
2208 mac2str(ap_addr->sa_data));
2210 /* if the incoming address == ff:ff:ff:ff:ff:ff, the user has
2211 chosen any or auto AP preference */
2212 if (is_broadcast_ether_addr(ap_addr->sa_data)
2213 || is_zero_ether_addr(ap_addr->sa_data))
2214 priv->wanted_bssid_valid = 0;
2216 /* user wants to set a preferred AP address */
2217 priv->wanted_bssid_valid = 1;
2218 memcpy(priv->wanted_bssid, ap_addr->sa_data, ETH_ALEN);
2224 static int at76_iw_handler_get_wap(struct net_device *netdev,
2225 struct iw_request_info *info,
2226 struct sockaddr *ap_addr, char *extra)
2228 struct at76_priv *priv = netdev_priv(netdev);
2230 ap_addr->sa_family = ARPHRD_ETHER;
2231 memcpy(ap_addr->sa_data, priv->bssid, ETH_ALEN);
2233 at76_dbg(DBG_IOCTL, "%s: SIOCGIWAP - wap/bssid %s", netdev->name,
2234 mac2str(ap_addr->sa_data));
2239 static int at76_iw_handler_set_scan(struct net_device *netdev,
2240 struct iw_request_info *info,
2241 union iwreq_data *wrqu, char *extra)
2243 struct at76_priv *priv = netdev_priv(netdev);
2246 at76_dbg(DBG_IOCTL, "%s: SIOCSIWSCAN", netdev->name);
2248 if (mutex_lock_interruptible(&priv->mtx))
2251 if (!netif_running(netdev)) {
2256 /* jal: we don't allow "iwlist ethX scan" while we are
2258 if (priv->iw_mode == IW_MODE_MONITOR) {
2263 /* Discard old scan results */
2264 if ((jiffies - priv->last_scan) > (20 * HZ))
2265 priv->scan_state = SCAN_IDLE;
2266 priv->last_scan = jiffies;
2268 /* Initiate a scan command */
2269 if (priv->scan_state == SCAN_IN_PROGRESS) {
2274 priv->scan_state = SCAN_IN_PROGRESS;
2278 /* Try to do passive or active scan if WE asks as. */
2279 if (wrqu->data.length
2280 && wrqu->data.length == sizeof(struct iw_scan_req)) {
2281 struct iw_scan_req *req = (struct iw_scan_req *)extra;
2283 if (req->scan_type == IW_SCAN_TYPE_PASSIVE)
2284 priv->scan_mode = SCAN_TYPE_PASSIVE;
2285 else if (req->scan_type == IW_SCAN_TYPE_ACTIVE)
2286 priv->scan_mode = SCAN_TYPE_ACTIVE;
2288 /* Sanity check values? */
2289 if (req->min_channel_time > 0)
2290 priv->scan_min_time = req->min_channel_time;
2292 if (req->max_channel_time > 0)
2293 priv->scan_max_time = req->max_channel_time;
2296 /* change to scanning state */
2297 at76_set_mac_state(priv, MAC_SCANNING);
2298 schedule_work(&priv->work_start_scan);
2301 mutex_unlock(&priv->mtx);
2305 static int at76_iw_handler_get_scan(struct net_device *netdev,
2306 struct iw_request_info *info,
2307 struct iw_point *data, char *extra)
2309 struct at76_priv *priv = netdev_priv(netdev);
2310 unsigned long flags;
2311 struct list_head *lptr, *nptr;
2312 struct bss_info *curr_bss;
2313 struct iw_event *iwe = kmalloc(sizeof(struct iw_event), GFP_KERNEL);
2314 char *curr_val, *curr_pos = extra;
2317 at76_dbg(DBG_IOCTL, "%s: SIOCGIWSCAN", netdev->name);
2322 if (priv->scan_state != SCAN_COMPLETED)
2323 /* scan not yet finished */
2326 spin_lock_irqsave(&priv->bss_list_spinlock, flags);
2328 list_for_each_safe(lptr, nptr, &priv->bss_list) {
2329 curr_bss = list_entry(lptr, struct bss_info, list);
2331 iwe->cmd = SIOCGIWAP;
2332 iwe->u.ap_addr.sa_family = ARPHRD_ETHER;
2333 memcpy(iwe->u.ap_addr.sa_data, curr_bss->bssid, 6);
2334 curr_pos = iwe_stream_add_event(info, curr_pos,
2335 extra + IW_SCAN_MAX_DATA, iwe,
2338 iwe->u.data.length = curr_bss->ssid_len;
2339 iwe->cmd = SIOCGIWESSID;
2340 iwe->u.data.flags = 1;
2342 curr_pos = iwe_stream_add_point(info, curr_pos,
2343 extra + IW_SCAN_MAX_DATA, iwe,
2346 iwe->cmd = SIOCGIWMODE;
2347 iwe->u.mode = (curr_bss->capa & WLAN_CAPABILITY_IBSS) ?
2349 (curr_bss->capa & WLAN_CAPABILITY_ESS) ?
2350 IW_MODE_MASTER : IW_MODE_AUTO;
2351 /* IW_MODE_AUTO = 0 which I thought is
2352 * the most logical value to return in this case */
2353 curr_pos = iwe_stream_add_event(info, curr_pos,
2354 extra + IW_SCAN_MAX_DATA, iwe,
2357 iwe->cmd = SIOCGIWFREQ;
2358 iwe->u.freq.m = curr_bss->channel;
2360 curr_pos = iwe_stream_add_event(info, curr_pos,
2361 extra + IW_SCAN_MAX_DATA, iwe,
2364 iwe->cmd = SIOCGIWENCODE;
2365 if (curr_bss->capa & WLAN_CAPABILITY_PRIVACY)
2366 iwe->u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
2368 iwe->u.data.flags = IW_ENCODE_DISABLED;
2370 iwe->u.data.length = 0;
2371 curr_pos = iwe_stream_add_point(info, curr_pos,
2372 extra + IW_SCAN_MAX_DATA, iwe,
2375 /* Add quality statistics */
2376 iwe->cmd = IWEVQUAL;
2377 iwe->u.qual.noise = 0;
2378 iwe->u.qual.updated =
2379 IW_QUAL_NOISE_INVALID | IW_QUAL_LEVEL_UPDATED;
2380 iwe->u.qual.level = (curr_bss->rssi * 100 / 42);
2381 if (iwe->u.qual.level > 100)
2382 iwe->u.qual.level = 100;
2383 if (at76_is_intersil(priv->board_type))
2384 iwe->u.qual.qual = curr_bss->link_qual;
2386 iwe->u.qual.qual = 0;
2387 iwe->u.qual.updated |= IW_QUAL_QUAL_INVALID;
2389 /* Add new value to event */
2390 curr_pos = iwe_stream_add_event(info, curr_pos,
2391 extra + IW_SCAN_MAX_DATA, iwe,
2394 /* Rate: stuffing multiple values in a single event requires
2395 * a bit more of magic - Jean II */
2396 curr_val = curr_pos + IW_EV_LCP_LEN;
2398 iwe->cmd = SIOCGIWRATE;
2399 /* Those two flags are ignored... */
2400 iwe->u.bitrate.fixed = 0;
2401 iwe->u.bitrate.disabled = 0;
2403 for (i = 0; i < curr_bss->rates_len; i++) {
2404 /* Bit rate given in 500 kb/s units (+ 0x80) */
2405 iwe->u.bitrate.value =
2406 ((curr_bss->rates[i] & 0x7f) * 500000);
2407 /* Add new value to event */
2408 curr_val = iwe_stream_add_value(info, curr_pos,
2411 IW_SCAN_MAX_DATA, iwe,
2415 /* Check if we added any event */
2416 if ((curr_val - curr_pos) > IW_EV_LCP_LEN)
2417 curr_pos = curr_val;
2419 /* more information may be sent back using IWECUSTOM */
2423 spin_unlock_irqrestore(&priv->bss_list_spinlock, flags);
2425 data->length = (curr_pos - extra);
2432 static int at76_iw_handler_set_essid(struct net_device *netdev,
2433 struct iw_request_info *info,
2434 struct iw_point *data, char *extra)
2436 struct at76_priv *priv = netdev_priv(netdev);
2438 at76_dbg(DBG_IOCTL, "%s: SIOCSIWESSID - %s", netdev->name, extra);
2441 memcpy(priv->essid, extra, data->length);
2442 priv->essid_size = data->length;
2444 priv->essid_size = 0; /* Use any SSID */
2449 static int at76_iw_handler_get_essid(struct net_device *netdev,
2450 struct iw_request_info *info,
2451 struct iw_point *data, char *extra)
2453 struct at76_priv *priv = netdev_priv(netdev);
2455 if (priv->essid_size) {
2456 /* not the ANY ssid in priv->essid */
2458 data->length = priv->essid_size;
2459 memcpy(extra, priv->essid, data->length);
2461 /* the ANY ssid was specified */
2462 if (priv->mac_state == MAC_CONNECTED && priv->curr_bss) {
2463 /* report the SSID we have found */
2465 data->length = priv->curr_bss->ssid_len;
2466 memcpy(extra, priv->curr_bss->ssid, data->length);
2468 /* report ANY back */
2474 at76_dbg(DBG_IOCTL, "%s: SIOCGIWESSID - %.*s", netdev->name,
2475 data->length, extra);
2480 static int at76_iw_handler_set_rate(struct net_device *netdev,
2481 struct iw_request_info *info,
2482 struct iw_param *bitrate, char *extra)
2484 struct at76_priv *priv = netdev_priv(netdev);
2485 int ret = -EIWCOMMIT;
2487 at76_dbg(DBG_IOCTL, "%s: SIOCSIWRATE - %d", netdev->name,
2490 switch (bitrate->value) {
2492 priv->txrate = TX_RATE_AUTO;
2493 break; /* auto rate */
2495 priv->txrate = TX_RATE_1MBIT;
2498 priv->txrate = TX_RATE_2MBIT;
2501 priv->txrate = TX_RATE_5_5MBIT;
2504 priv->txrate = TX_RATE_11MBIT;
2513 static int at76_iw_handler_get_rate(struct net_device *netdev,
2514 struct iw_request_info *info,
2515 struct iw_param *bitrate, char *extra)
2517 struct at76_priv *priv = netdev_priv(netdev);
2520 switch (priv->txrate) {
2521 /* return max rate if RATE_AUTO */
2523 bitrate->value = 11000000;
2526 bitrate->value = 1000000;
2529 bitrate->value = 2000000;
2531 case TX_RATE_5_5MBIT:
2532 bitrate->value = 5500000;
2534 case TX_RATE_11MBIT:
2535 bitrate->value = 11000000;
2541 bitrate->fixed = (priv->txrate != TX_RATE_AUTO);
2542 bitrate->disabled = 0;
2544 at76_dbg(DBG_IOCTL, "%s: SIOCGIWRATE - %d", netdev->name,
2550 static int at76_iw_handler_set_rts(struct net_device *netdev,
2551 struct iw_request_info *info,
2552 struct iw_param *rts, char *extra)
2554 struct at76_priv *priv = netdev_priv(netdev);
2555 int ret = -EIWCOMMIT;
2556 int rthr = rts->value;
2558 at76_dbg(DBG_IOCTL, "%s: SIOCSIWRTS - value %d disabled %s",
2559 netdev->name, rts->value, (rts->disabled) ? "true" : "false");
2562 rthr = MAX_RTS_THRESHOLD;
2564 if ((rthr < 0) || (rthr > MAX_RTS_THRESHOLD))
2567 priv->rts_threshold = rthr;
2572 static int at76_iw_handler_get_rts(struct net_device *netdev,
2573 struct iw_request_info *info,
2574 struct iw_param *rts, char *extra)
2576 struct at76_priv *priv = netdev_priv(netdev);
2578 rts->value = priv->rts_threshold;
2579 rts->disabled = (rts->value >= MAX_RTS_THRESHOLD);
2582 at76_dbg(DBG_IOCTL, "%s: SIOCGIWRTS - value %d disabled %s",
2583 netdev->name, rts->value, (rts->disabled) ? "true" : "false");
2588 static int at76_iw_handler_set_frag(struct net_device *netdev,
2589 struct iw_request_info *info,
2590 struct iw_param *frag, char *extra)
2592 struct at76_priv *priv = netdev_priv(netdev);
2593 int ret = -EIWCOMMIT;
2594 int fthr = frag->value;
2596 at76_dbg(DBG_IOCTL, "%s: SIOCSIWFRAG - value %d, disabled %s",
2597 netdev->name, frag->value,
2598 (frag->disabled) ? "true" : "false");
2601 fthr = MAX_FRAG_THRESHOLD;
2603 if ((fthr < MIN_FRAG_THRESHOLD) || (fthr > MAX_FRAG_THRESHOLD))
2606 priv->frag_threshold = fthr & ~0x1; /* get an even value */
2611 static int at76_iw_handler_get_frag(struct net_device *netdev,
2612 struct iw_request_info *info,
2613 struct iw_param *frag, char *extra)
2615 struct at76_priv *priv = netdev_priv(netdev);
2617 frag->value = priv->frag_threshold;
2618 frag->disabled = (frag->value >= MAX_FRAG_THRESHOLD);
2621 at76_dbg(DBG_IOCTL, "%s: SIOCGIWFRAG - value %d, disabled %s",
2622 netdev->name, frag->value,
2623 (frag->disabled) ? "true" : "false");
2628 static int at76_iw_handler_get_txpow(struct net_device *netdev,
2629 struct iw_request_info *info,
2630 struct iw_param *power, char *extra)
2633 power->fixed = 1; /* No power control */
2634 power->disabled = 0;
2635 power->flags = IW_TXPOW_DBM;
2637 at76_dbg(DBG_IOCTL, "%s: SIOCGIWTXPOW - txpow %d dBm", netdev->name,
2643 /* jal: short retry is handled by the firmware (at least 0.90.x),
2644 while long retry is not (?) */
2645 static int at76_iw_handler_set_retry(struct net_device *netdev,
2646 struct iw_request_info *info,
2647 struct iw_param *retry, char *extra)
2649 struct at76_priv *priv = netdev_priv(netdev);
2650 int ret = -EIWCOMMIT;
2652 at76_dbg(DBG_IOCTL, "%s: SIOCSIWRETRY disabled %d flags 0x%x val %d",
2653 netdev->name, retry->disabled, retry->flags, retry->value);
2655 if (!retry->disabled && (retry->flags & IW_RETRY_LIMIT)) {
2656 if ((retry->flags & IW_RETRY_MIN) ||
2657 !(retry->flags & IW_RETRY_MAX))
2658 priv->short_retry_limit = retry->value;
2667 /* Adapted (ripped) from atmel.c */
2668 static int at76_iw_handler_get_retry(struct net_device *netdev,
2669 struct iw_request_info *info,
2670 struct iw_param *retry, char *extra)
2672 struct at76_priv *priv = netdev_priv(netdev);
2674 at76_dbg(DBG_IOCTL, "%s: SIOCGIWRETRY", netdev->name);
2676 retry->disabled = 0; /* Can't be disabled */
2677 retry->flags = IW_RETRY_LIMIT;
2678 retry->value = priv->short_retry_limit;
2683 static int at76_iw_handler_set_encode(struct net_device *netdev,
2684 struct iw_request_info *info,
2685 struct iw_point *encoding, char *extra)
2687 struct at76_priv *priv = netdev_priv(netdev);
2688 int index = (encoding->flags & IW_ENCODE_INDEX) - 1;
2689 int len = encoding->length;
2691 at76_dbg(DBG_IOCTL, "%s: SIOCSIWENCODE - enc.flags %08x "
2692 "pointer %p len %d", netdev->name, encoding->flags,
2693 encoding->pointer, encoding->length);
2695 "%s: SIOCSIWENCODE - old wepstate: enabled %s key_id %d "
2696 "auth_mode %s", netdev->name,
2697 (priv->wep_enabled) ? "true" : "false", priv->wep_key_id,
2699 WLAN_AUTH_SHARED_KEY) ? "restricted" : "open");
2701 /* take the old default key if index is invalid */
2702 if ((index < 0) || (index >= WEP_KEYS))
2703 index = priv->wep_key_id;
2706 if (len > WEP_LARGE_KEY_LEN)
2707 len = WEP_LARGE_KEY_LEN;
2709 memset(priv->wep_keys[index], 0, WEP_KEY_LEN);
2710 memcpy(priv->wep_keys[index], extra, len);
2711 priv->wep_keys_len[index] = (len <= WEP_SMALL_KEY_LEN) ?
2712 WEP_SMALL_KEY_LEN : WEP_LARGE_KEY_LEN;
2713 priv->wep_enabled = 1;
2716 priv->wep_key_id = index;
2717 priv->wep_enabled = ((encoding->flags & IW_ENCODE_DISABLED) == 0);
2719 if (encoding->flags & IW_ENCODE_RESTRICTED)
2720 priv->auth_mode = WLAN_AUTH_SHARED_KEY;
2721 if (encoding->flags & IW_ENCODE_OPEN)
2722 priv->auth_mode = WLAN_AUTH_OPEN;
2725 "%s: SIOCSIWENCODE - new wepstate: enabled %s key_id %d "
2726 "key_len %d auth_mode %s", netdev->name,
2727 (priv->wep_enabled) ? "true" : "false", priv->wep_key_id + 1,
2728 priv->wep_keys_len[priv->wep_key_id],
2730 WLAN_AUTH_SHARED_KEY) ? "restricted" : "open");
2735 static int at76_iw_handler_get_encode(struct net_device *netdev,
2736 struct iw_request_info *info,
2737 struct iw_point *encoding, char *extra)
2739 struct at76_priv *priv = netdev_priv(netdev);
2740 int index = (encoding->flags & IW_ENCODE_INDEX) - 1;
2742 if ((index < 0) || (index >= WEP_KEYS))
2743 index = priv->wep_key_id;
2746 (priv->auth_mode == WLAN_AUTH_SHARED_KEY) ?
2747 IW_ENCODE_RESTRICTED : IW_ENCODE_OPEN;
2749 if (!priv->wep_enabled)
2750 encoding->flags |= IW_ENCODE_DISABLED;
2752 if (encoding->pointer) {
2753 encoding->length = priv->wep_keys_len[index];
2755 memcpy(extra, priv->wep_keys[index], priv->wep_keys_len[index]);
2757 encoding->flags |= (index + 1);
2760 at76_dbg(DBG_IOCTL, "%s: SIOCGIWENCODE - enc.flags %08x "
2761 "pointer %p len %d", netdev->name, encoding->flags,
2762 encoding->pointer, encoding->length);
2764 "%s: SIOCGIWENCODE - wepstate: enabled %s key_id %d "
2765 "key_len %d auth_mode %s", netdev->name,
2766 (priv->wep_enabled) ? "true" : "false", priv->wep_key_id + 1,
2767 priv->wep_keys_len[priv->wep_key_id],
2769 WLAN_AUTH_SHARED_KEY) ? "restricted" : "open");
2774 static int at76_iw_handler_set_power(struct net_device *netdev,
2775 struct iw_request_info *info,
2776 struct iw_param *prq, char *extra)
2778 int err = -EIWCOMMIT;
2779 struct at76_priv *priv = netdev_priv(netdev);
2782 "%s: SIOCSIWPOWER - disabled %s flags 0x%x value 0x%x",
2783 netdev->name, (prq->disabled) ? "true" : "false", prq->flags,
2787 priv->pm_mode = AT76_PM_OFF;
2789 switch (prq->flags & IW_POWER_MODE) {
2790 case IW_POWER_ALL_R:
2797 if (prq->flags & IW_POWER_PERIOD)
2798 priv->pm_period = prq->value;
2800 if (prq->flags & IW_POWER_TIMEOUT) {
2804 priv->pm_mode = AT76_PM_ON;
2810 static int at76_iw_handler_get_power(struct net_device *netdev,
2811 struct iw_request_info *info,
2812 struct iw_param *power, char *extra)
2814 struct at76_priv *priv = netdev_priv(netdev);
2816 power->disabled = (priv->pm_mode == AT76_PM_OFF);
2817 if (!power->disabled) {
2818 power->flags = IW_POWER_PERIOD | IW_POWER_ALL_R;
2819 power->value = priv->pm_period;
2822 at76_dbg(DBG_IOCTL, "%s: SIOCGIWPOWER - %s flags 0x%x value 0x%x",
2823 netdev->name, power->disabled ? "disabled" : "enabled",
2824 power->flags, power->value);
2829 /*******************************************************************************
2832 static int at76_iw_set_short_preamble(struct net_device *netdev,
2833 struct iw_request_info *info, char *name,
2836 struct at76_priv *priv = netdev_priv(netdev);
2837 int val = *((int *)name);
2838 int ret = -EIWCOMMIT;
2840 at76_dbg(DBG_IOCTL, "%s: AT76_SET_SHORT_PREAMBLE, %d",
2843 if (val < PREAMBLE_TYPE_LONG || val > PREAMBLE_TYPE_AUTO)
2846 priv->preamble_type = val;
2851 static int at76_iw_get_short_preamble(struct net_device *netdev,
2852 struct iw_request_info *info,
2853 union iwreq_data *wrqu, char *extra)
2855 struct at76_priv *priv = netdev_priv(netdev);
2857 snprintf(wrqu->name, sizeof(wrqu->name), "%s (%d)",
2858 preambles[priv->preamble_type], priv->preamble_type);
2862 static int at76_iw_set_debug(struct net_device *netdev,
2863 struct iw_request_info *info,
2864 struct iw_point *data, char *extra)
2869 if (data->length > 0) {
2870 val = simple_strtol(extra, &ptr, 0);
2875 at76_dbg(DBG_IOCTL, "%s: AT76_SET_DEBUG input %d: %s -> 0x%x",
2876 netdev->name, data->length, extra, val);
2880 at76_dbg(DBG_IOCTL, "%s: AT76_SET_DEBUG, old 0x%x, new 0x%x",
2881 netdev->name, at76_debug, val);
2883 /* jal: some more output to pin down lockups */
2884 at76_dbg(DBG_IOCTL, "%s: netif running %d queue_stopped %d "
2885 "carrier_ok %d", netdev->name, netif_running(netdev),
2886 netif_queue_stopped(netdev), netif_carrier_ok(netdev));
2893 static int at76_iw_get_debug(struct net_device *netdev,
2894 struct iw_request_info *info,
2895 union iwreq_data *wrqu, char *extra)
2897 snprintf(wrqu->name, sizeof(wrqu->name), "0x%08x", at76_debug);
2901 static int at76_iw_set_powersave_mode(struct net_device *netdev,
2902 struct iw_request_info *info, char *name,
2905 struct at76_priv *priv = netdev_priv(netdev);
2906 int val = *((int *)name);
2907 int ret = -EIWCOMMIT;
2909 at76_dbg(DBG_IOCTL, "%s: AT76_SET_POWERSAVE_MODE, %d (%s)",
2911 val == AT76_PM_OFF ? "active" : val == AT76_PM_ON ? "save" :
2912 val == AT76_PM_SMART ? "smart save" : "<invalid>");
2913 if (val < AT76_PM_OFF || val > AT76_PM_SMART)
2916 priv->pm_mode = val;
2921 static int at76_iw_get_powersave_mode(struct net_device *netdev,
2922 struct iw_request_info *info,
2923 union iwreq_data *wrqu, char *extra)
2925 struct at76_priv *priv = netdev_priv(netdev);
2926 int *param = (int *)extra;
2928 param[0] = priv->pm_mode;
2932 static int at76_iw_set_scan_times(struct net_device *netdev,
2933 struct iw_request_info *info, char *name,
2936 struct at76_priv *priv = netdev_priv(netdev);
2937 int mint = *((int *)name);
2938 int maxt = *((int *)name + 1);
2939 int ret = -EIWCOMMIT;
2941 at76_dbg(DBG_IOCTL, "%s: AT76_SET_SCAN_TIMES - min %d max %d",
2942 netdev->name, mint, maxt);
2943 if (mint <= 0 || maxt <= 0 || mint > maxt)
2946 priv->scan_min_time = mint;
2947 priv->scan_max_time = maxt;
2953 static int at76_iw_get_scan_times(struct net_device *netdev,
2954 struct iw_request_info *info,
2955 union iwreq_data *wrqu, char *extra)
2957 struct at76_priv *priv = netdev_priv(netdev);
2958 int *param = (int *)extra;
2960 param[0] = priv->scan_min_time;
2961 param[1] = priv->scan_max_time;
2965 static int at76_iw_set_scan_mode(struct net_device *netdev,
2966 struct iw_request_info *info, char *name,
2969 struct at76_priv *priv = netdev_priv(netdev);
2970 int val = *((int *)name);
2971 int ret = -EIWCOMMIT;
2973 at76_dbg(DBG_IOCTL, "%s: AT76_SET_SCAN_MODE - mode %s",
2974 netdev->name, (val = SCAN_TYPE_ACTIVE) ? "active" :
2975 (val = SCAN_TYPE_PASSIVE) ? "passive" : "<invalid>");
2977 if (val != SCAN_TYPE_ACTIVE && val != SCAN_TYPE_PASSIVE)
2980 priv->scan_mode = val;
2985 static int at76_iw_get_scan_mode(struct net_device *netdev,
2986 struct iw_request_info *info,
2987 union iwreq_data *wrqu, char *extra)
2989 struct at76_priv *priv = netdev_priv(netdev);
2990 int *param = (int *)extra;
2992 param[0] = priv->scan_mode;
2996 #define AT76_SET_HANDLER(h, f) [h - SIOCIWFIRST] = (iw_handler) f
2998 /* Standard wireless handlers */
2999 static const iw_handler at76_handlers[] = {
3000 AT76_SET_HANDLER(SIOCSIWCOMMIT, at76_iw_handler_commit),
3001 AT76_SET_HANDLER(SIOCGIWNAME, at76_iw_handler_get_name),
3002 AT76_SET_HANDLER(SIOCSIWFREQ, at76_iw_handler_set_freq),
3003 AT76_SET_HANDLER(SIOCGIWFREQ, at76_iw_handler_get_freq),
3004 AT76_SET_HANDLER(SIOCSIWMODE, at76_iw_handler_set_mode),
3005 AT76_SET_HANDLER(SIOCGIWMODE, at76_iw_handler_get_mode),
3006 AT76_SET_HANDLER(SIOCGIWRANGE, at76_iw_handler_get_range),
3007 AT76_SET_HANDLER(SIOCSIWSPY, at76_iw_handler_set_spy),
3008 AT76_SET_HANDLER(SIOCGIWSPY, at76_iw_handler_get_spy),
3009 AT76_SET_HANDLER(SIOCSIWTHRSPY, at76_iw_handler_set_thrspy),
3010 AT76_SET_HANDLER(SIOCGIWTHRSPY, at76_iw_handler_get_thrspy),
3011 AT76_SET_HANDLER(SIOCSIWAP, at76_iw_handler_set_wap),
3012 AT76_SET_HANDLER(SIOCGIWAP, at76_iw_handler_get_wap),
3013 AT76_SET_HANDLER(SIOCSIWSCAN, at76_iw_handler_set_scan),
3014 AT76_SET_HANDLER(SIOCGIWSCAN, at76_iw_handler_get_scan),
3015 AT76_SET_HANDLER(SIOCSIWESSID, at76_iw_handler_set_essid),
3016 AT76_SET_HANDLER(SIOCGIWESSID, at76_iw_handler_get_essid),
3017 AT76_SET_HANDLER(SIOCSIWRATE, at76_iw_handler_set_rate),
3018 AT76_SET_HANDLER(SIOCGIWRATE, at76_iw_handler_get_rate),
3019 AT76_SET_HANDLER(SIOCSIWRTS, at76_iw_handler_set_rts),
3020 AT76_SET_HANDLER(SIOCGIWRTS, at76_iw_handler_get_rts),
3021 AT76_SET_HANDLER(SIOCSIWFRAG, at76_iw_handler_set_frag),
3022 AT76_SET_HANDLER(SIOCGIWFRAG, at76_iw_handler_get_frag),
3023 AT76_SET_HANDLER(SIOCGIWTXPOW, at76_iw_handler_get_txpow),
3024 AT76_SET_HANDLER(SIOCSIWRETRY, at76_iw_handler_set_retry),
3025 AT76_SET_HANDLER(SIOCGIWRETRY, at76_iw_handler_get_retry),
3026 AT76_SET_HANDLER(SIOCSIWENCODE, at76_iw_handler_set_encode),
3027 AT76_SET_HANDLER(SIOCGIWENCODE, at76_iw_handler_get_encode),
3028 AT76_SET_HANDLER(SIOCSIWPOWER, at76_iw_handler_set_power),
3029 AT76_SET_HANDLER(SIOCGIWPOWER, at76_iw_handler_get_power)
3032 #define AT76_SET_PRIV(h, f) [h - SIOCIWFIRSTPRIV] = (iw_handler) f
3034 /* Private wireless handlers */
3035 static const iw_handler at76_priv_handlers[] = {
3036 AT76_SET_PRIV(AT76_SET_SHORT_PREAMBLE, at76_iw_set_short_preamble),
3037 AT76_SET_PRIV(AT76_GET_SHORT_PREAMBLE, at76_iw_get_short_preamble),
3038 AT76_SET_PRIV(AT76_SET_DEBUG, at76_iw_set_debug),
3039 AT76_SET_PRIV(AT76_GET_DEBUG, at76_iw_get_debug),
3040 AT76_SET_PRIV(AT76_SET_POWERSAVE_MODE, at76_iw_set_powersave_mode),
3041 AT76_SET_PRIV(AT76_GET_POWERSAVE_MODE, at76_iw_get_powersave_mode),
3042 AT76_SET_PRIV(AT76_SET_SCAN_TIMES, at76_iw_set_scan_times),
3043 AT76_SET_PRIV(AT76_GET_SCAN_TIMES, at76_iw_get_scan_times),
3044 AT76_SET_PRIV(AT76_SET_SCAN_MODE, at76_iw_set_scan_mode),
3045 AT76_SET_PRIV(AT76_GET_SCAN_MODE, at76_iw_get_scan_mode),
3048 /* Names and arguments of private wireless handlers */
3049 static const struct iw_priv_args at76_priv_args[] = {
3050 /* 0 - long, 1 - short */
3051 {AT76_SET_SHORT_PREAMBLE,
3052 IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "set_preamble"},
3054 {AT76_GET_SHORT_PREAMBLE,
3055 0, IW_PRIV_TYPE_CHAR | IW_PRIV_SIZE_FIXED | 10, "get_preamble"},
3057 /* we must pass the new debug mask as a string, because iwpriv cannot
3058 * parse hex numbers starting with 0x :-( */
3060 IW_PRIV_TYPE_CHAR | 10, 0, "set_debug"},
3063 0, IW_PRIV_TYPE_CHAR | IW_PRIV_SIZE_FIXED | 10, "get_debug"},
3065 /* 1 - active, 2 - power save, 3 - smart power save */
3066 {AT76_SET_POWERSAVE_MODE,
3067 IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "set_powersave"},
3069 {AT76_GET_POWERSAVE_MODE,
3070 0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "get_powersave"},
3072 /* min_channel_time, max_channel_time */
3073 {AT76_SET_SCAN_TIMES,
3074 IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 2, 0, "set_scan_times"},
3076 {AT76_GET_SCAN_TIMES,
3077 0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 2, "get_scan_times"},
3079 /* 0 - active, 1 - passive scan */
3080 {AT76_SET_SCAN_MODE,
3081 IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "set_scan_mode"},
3083 {AT76_GET_SCAN_MODE,
3084 0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "get_scan_mode"},
3087 static const struct iw_handler_def at76_handler_def = {
3088 .num_standard = ARRAY_SIZE(at76_handlers),
3089 .num_private = ARRAY_SIZE(at76_priv_handlers),
3090 .num_private_args = ARRAY_SIZE(at76_priv_args),
3091 .standard = at76_handlers,
3092 .private = at76_priv_handlers,
3093 .private_args = at76_priv_args,
3094 .get_wireless_stats = at76_get_wireless_stats,
3097 static const u8 snapsig[] = { 0xaa, 0xaa, 0x03 };
3099 /* RFC 1042 encapsulates Ethernet frames in 802.2 SNAP (0xaa, 0xaa, 0x03) with
3100 * a SNAP OID of 0 (0x00, 0x00, 0x00) */
3101 static const u8 rfc1042sig[] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
3103 static int at76_tx(struct sk_buff *skb, struct net_device *netdev)
3105 struct at76_priv *priv = netdev_priv(netdev);
3106 struct net_device_stats *stats = &priv->stats;
3110 struct at76_tx_buffer *tx_buffer = priv->bulk_out_buffer;
3111 struct ieee80211_hdr_3addr *i802_11_hdr =
3112 (struct ieee80211_hdr_3addr *)tx_buffer->packet;
3113 u8 *payload = i802_11_hdr->payload;
3114 struct ethhdr *eh = (struct ethhdr *)skb->data;
3116 if (netif_queue_stopped(netdev)) {
3117 printk(KERN_ERR "%s: %s called while netdev is stopped\n",
3118 netdev->name, __func__);
3119 /* skip this packet */
3124 if (priv->tx_urb->status == -EINPROGRESS) {
3125 printk(KERN_ERR "%s: %s called while tx urb is pending\n",
3126 netdev->name, __func__);
3127 /* skip this packet */
3132 if (skb->len < ETH_HLEN) {
3133 printk(KERN_ERR "%s: %s: skb too short (%d)\n",
3134 netdev->name, __func__, skb->len);
3139 at76_ledtrig_tx_activity(); /* tell ledtrigger we send a packet */
3141 /* we can get rid of memcpy if we set netdev->hard_header_len to
3142 reserve enough space, but we would need to keep the skb around */
3144 if (ntohs(eh->h_proto) <= ETH_DATA_LEN) {
3145 /* this is a 802.3 packet */
3146 if (skb->len >= ETH_HLEN + sizeof(rfc1042sig)
3147 && skb->data[ETH_HLEN] == rfc1042sig[0]
3148 && skb->data[ETH_HLEN + 1] == rfc1042sig[1]) {
3149 /* higher layer delivered SNAP header - keep it */
3150 memcpy(payload, skb->data + ETH_HLEN,
3151 skb->len - ETH_HLEN);
3152 wlen = IEEE80211_3ADDR_LEN + skb->len - ETH_HLEN;
3154 printk(KERN_ERR "%s: dropping non-SNAP 802.2 packet "
3155 "(DSAP 0x%02x SSAP 0x%02x cntrl 0x%02x)\n",
3156 priv->netdev->name, skb->data[ETH_HLEN],
3157 skb->data[ETH_HLEN + 1],
3158 skb->data[ETH_HLEN + 2]);
3163 /* add RFC 1042 header in front */
3164 memcpy(payload, rfc1042sig, sizeof(rfc1042sig));
3165 memcpy(payload + sizeof(rfc1042sig), &eh->h_proto,
3166 skb->len - offsetof(struct ethhdr, h_proto));
3167 wlen = IEEE80211_3ADDR_LEN + sizeof(rfc1042sig) + skb->len -
3168 offsetof(struct ethhdr, h_proto);
3171 /* make wireless header */
3172 i802_11_hdr->frame_ctl =
3173 cpu_to_le16(IEEE80211_FTYPE_DATA |
3174 (priv->wep_enabled ? IEEE80211_FCTL_PROTECTED : 0) |
3176 IW_MODE_INFRA ? IEEE80211_FCTL_TODS : 0));
3178 if (priv->iw_mode == IW_MODE_ADHOC) {
3179 memcpy(i802_11_hdr->addr1, eh->h_dest, ETH_ALEN);
3180 memcpy(i802_11_hdr->addr2, eh->h_source, ETH_ALEN);
3181 memcpy(i802_11_hdr->addr3, priv->bssid, ETH_ALEN);
3182 } else if (priv->iw_mode == IW_MODE_INFRA) {
3183 memcpy(i802_11_hdr->addr1, priv->bssid, ETH_ALEN);
3184 memcpy(i802_11_hdr->addr2, eh->h_source, ETH_ALEN);
3185 memcpy(i802_11_hdr->addr3, eh->h_dest, ETH_ALEN);
3188 i802_11_hdr->duration_id = cpu_to_le16(0);
3189 i802_11_hdr->seq_ctl = cpu_to_le16(0);
3191 /* setup 'Atmel' header */
3192 tx_buffer->wlength = cpu_to_le16(wlen);
3193 tx_buffer->tx_rate = priv->txrate;
3194 /* for broadcast destination addresses, the firmware 0.100.x
3195 seems to choose the highest rate set with CMD_STARTUP in
3196 basic_rate_set replacing this value */
3198 memset(tx_buffer->reserved, 0, sizeof(tx_buffer->reserved));
3200 tx_buffer->padding = at76_calc_padding(wlen);
3201 submit_len = wlen + AT76_TX_HDRLEN + tx_buffer->padding;
3203 at76_dbg(DBG_TX_DATA_CONTENT, "%s skb->data %s", priv->netdev->name,
3204 hex2str(skb->data, 32));
3205 at76_dbg(DBG_TX_DATA, "%s tx: wlen 0x%x pad 0x%x rate %d hdr %s",
3207 le16_to_cpu(tx_buffer->wlength),
3208 tx_buffer->padding, tx_buffer->tx_rate,
3209 hex2str(i802_11_hdr, sizeof(*i802_11_hdr)));
3210 at76_dbg(DBG_TX_DATA_CONTENT, "%s payload %s", priv->netdev->name,
3211 hex2str(payload, 48));
3214 netif_stop_queue(netdev);
3215 netdev->trans_start = jiffies;
3217 usb_fill_bulk_urb(priv->tx_urb, priv->udev, priv->tx_pipe, tx_buffer,
3218 submit_len, at76_tx_callback, priv);
3219 ret = usb_submit_urb(priv->tx_urb, GFP_ATOMIC);
3222 printk(KERN_ERR "%s: error in tx submit urb: %d\n",
3226 "%s: -EINVAL: tx urb %p hcpriv %p complete %p\n",
3227 priv->netdev->name, priv->tx_urb,
3228 priv->tx_urb->hcpriv, priv->tx_urb->complete);
3230 stats->tx_bytes += skb->len;
3237 static void at76_tx_timeout(struct net_device *netdev)
3239 struct at76_priv *priv = netdev_priv(netdev);
3243 dev_warn(&netdev->dev, "tx timeout.");
3245 usb_unlink_urb(priv->tx_urb);
3246 priv->stats.tx_errors++;
3249 static int at76_submit_rx_urb(struct at76_priv *priv)
3253 struct sk_buff *skb = priv->rx_skb;
3255 if (!priv->rx_urb) {
3256 printk(KERN_ERR "%s: %s: priv->rx_urb is NULL\n",
3257 priv->netdev->name, __func__);
3262 skb = dev_alloc_skb(sizeof(struct at76_rx_buffer));
3264 printk(KERN_ERR "%s: cannot allocate rx skbuff\n",
3265 priv->netdev->name);
3271 skb_push(skb, skb_headroom(skb));
3275 size = skb_tailroom(skb);
3276 usb_fill_bulk_urb(priv->rx_urb, priv->udev, priv->rx_pipe,
3277 skb_put(skb, size), size, at76_rx_callback, priv);
3278 ret = usb_submit_urb(priv->rx_urb, GFP_ATOMIC);
3281 at76_dbg(DBG_DEVSTART,
3282 "usb_submit_urb returned -ENODEV");
3284 printk(KERN_ERR "%s: rx, usb_submit_urb failed: %d\n",
3285 priv->netdev->name, ret);
3289 if (ret < 0 && ret != -ENODEV)
3290 printk(KERN_ERR "%s: cannot submit rx urb - please unload the "
3291 "driver and/or power cycle the device\n",
3292 priv->netdev->name);
3297 static int at76_open(struct net_device *netdev)
3299 struct at76_priv *priv = netdev_priv(netdev);
3302 at76_dbg(DBG_PROC_ENTRY, "%s(): entry", __func__);
3304 if (mutex_lock_interruptible(&priv->mtx))
3307 /* if netdev->dev_addr != priv->mac_addr we must
3308 set the mac address in the device ! */
3309 if (compare_ether_addr(netdev->dev_addr, priv->mac_addr)) {
3310 if (at76_add_mac_address(priv, netdev->dev_addr) >= 0)
3311 at76_dbg(DBG_PROGRESS, "%s: set new MAC addr %s",
3312 netdev->name, mac2str(netdev->dev_addr));
3315 priv->scan_state = SCAN_IDLE;
3316 priv->last_scan = jiffies;
3318 ret = at76_submit_rx_urb(priv);
3320 printk(KERN_ERR "%s: open: submit_rx_urb failed: %d\n",
3325 schedule_delayed_work(&priv->dwork_restart, 0);
3327 at76_dbg(DBG_PROC_ENTRY, "%s(): end", __func__);
3329 mutex_unlock(&priv->mtx);
3330 return ret < 0 ? ret : 0;
3333 static int at76_stop(struct net_device *netdev)
3335 struct at76_priv *priv = netdev_priv(netdev);
3337 at76_dbg(DBG_DEVSTART, "%s: ENTER", __func__);
3339 if (mutex_lock_interruptible(&priv->mtx))
3344 if (!priv->device_unplugged) {
3345 /* We are called by "ifconfig ethX down", not because the
3346 * device is not available anymore. */
3347 at76_set_radio(priv, 0);
3349 /* We unlink rx_urb because at76_open() re-submits it.
3350 * If unplugged, at76_delete_device() takes care of it. */
3351 usb_kill_urb(priv->rx_urb);
3354 /* free the bss_list */
3355 at76_free_bss_list(priv);
3357 mutex_unlock(&priv->mtx);
3358 at76_dbg(DBG_DEVSTART, "%s: EXIT", __func__);
3363 static void at76_ethtool_get_drvinfo(struct net_device *netdev,
3364 struct ethtool_drvinfo *info)
3366 struct at76_priv *priv = netdev_priv(netdev);
3368 strncpy(info->driver, DRIVER_NAME, sizeof(info->driver));
3369 strncpy(info->version, DRIVER_VERSION, sizeof(info->version));
3371 usb_make_path(priv->udev, info->bus_info, sizeof(info->bus_info));
3373 snprintf(info->fw_version, sizeof(info->fw_version), "%d.%d.%d-%d",
3374 priv->fw_version.major, priv->fw_version.minor,
3375 priv->fw_version.patch, priv->fw_version.build);
3378 static u32 at76_ethtool_get_link(struct net_device *netdev)
3380 struct at76_priv *priv = netdev_priv(netdev);
3381 return priv->mac_state == MAC_CONNECTED;
3384 static struct ethtool_ops at76_ethtool_ops = {
3385 .get_drvinfo = at76_ethtool_get_drvinfo,
3386 .get_link = at76_ethtool_get_link,
3389 /* Download external firmware */
3390 static int at76_load_external_fw(struct usb_device *udev, struct fwentry *fwe)
3397 u8 *buf = fwe->extfw;
3398 int size = fwe->extfw_size;
3403 op_mode = at76_get_op_mode(udev);
3404 at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
3406 if (op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
3407 dev_printk(KERN_ERR, &udev->dev, "unexpected opmode %d\n",
3412 block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
3416 at76_dbg(DBG_DEVSTART, "downloading external firmware");
3418 /* for fw >= 0.100, the device needs an extra empty block */
3420 bsize = min_t(int, size, FW_BLOCK_SIZE);
3421 memcpy(block, buf, bsize);
3422 at76_dbg(DBG_DEVSTART,
3423 "ext fw, size left = %5d, bsize = %4d, blockno = %2d",
3424 size, bsize, blockno);
3425 ret = at76_load_ext_fw_block(udev, blockno, block, bsize);
3427 dev_printk(KERN_ERR, &udev->dev,
3428 "loading %dth firmware block failed: %d\n",
3435 } while (bsize > 0);
3437 if (at76_is_505a(fwe->board_type)) {
3438 at76_dbg(DBG_DEVSTART, "200 ms delay for 505a");
3439 schedule_timeout_interruptible(HZ / 5 + 1);
3445 dev_printk(KERN_ERR, &udev->dev,
3446 "downloading external firmware failed: %d\n", ret);
3450 /* Download internal firmware */
3451 static int at76_load_internal_fw(struct usb_device *udev, struct fwentry *fwe)
3454 int need_remap = !at76_is_505a(fwe->board_type);
3456 ret = at76_usbdfu_download(udev, fwe->intfw, fwe->intfw_size,
3457 need_remap ? 0 : 2 * HZ);
3460 dev_printk(KERN_ERR, &udev->dev,
3461 "downloading internal fw failed with %d\n", ret);
3465 at76_dbg(DBG_DEVSTART, "sending REMAP");
3467 /* no REMAP for 505A (see SF driver) */
3469 ret = at76_remap(udev);
3471 dev_printk(KERN_ERR, &udev->dev,
3472 "sending REMAP failed with %d\n", ret);
3477 at76_dbg(DBG_DEVSTART, "sleeping for 2 seconds");
3478 schedule_timeout_interruptible(2 * HZ + 1);
3479 usb_reset_device(udev);
3485 static int at76_match_essid(struct at76_priv *priv, struct bss_info *ptr)
3487 /* common criteria for both modi */
3489 int ret = (priv->essid_size == 0 /* ANY ssid */ ||
3490 (priv->essid_size == ptr->ssid_len &&
3491 !memcmp(priv->essid, ptr->ssid, ptr->ssid_len)));
3493 at76_dbg(DBG_BSS_MATCH,
3494 "%s bss table entry %p: essid didn't match",
3495 priv->netdev->name, ptr);
3499 static inline int at76_match_mode(struct at76_priv *priv, struct bss_info *ptr)
3503 if (priv->iw_mode == IW_MODE_ADHOC)
3504 ret = ptr->capa & WLAN_CAPABILITY_IBSS;
3506 ret = ptr->capa & WLAN_CAPABILITY_ESS;
3508 at76_dbg(DBG_BSS_MATCH,
3509 "%s bss table entry %p: mode didn't match",
3510 priv->netdev->name, ptr);
3514 static int at76_match_rates(struct at76_priv *priv, struct bss_info *ptr)
3518 for (i = 0; i < ptr->rates_len; i++) {
3519 u8 rate = ptr->rates[i];
3524 /* this is a basic rate we have to support
3525 (see IEEE802.11, ch. 7.3.2.2) */
3526 if (rate != (0x80 | hw_rates[0])
3527 && rate != (0x80 | hw_rates[1])
3528 && rate != (0x80 | hw_rates[2])
3529 && rate != (0x80 | hw_rates[3])) {
3530 at76_dbg(DBG_BSS_MATCH,
3531 "%s: bss table entry %p: basic rate %02x not "
3532 "supported", priv->netdev->name, ptr, rate);
3537 /* if we use short preamble, the bss must support it */
3538 if (priv->preamble_type == PREAMBLE_TYPE_SHORT &&
3539 !(ptr->capa & WLAN_CAPABILITY_SHORT_PREAMBLE)) {
3540 at76_dbg(DBG_BSS_MATCH,
3541 "%s: %p does not support short preamble",
3542 priv->netdev->name, ptr);
3548 static inline int at76_match_wep(struct at76_priv *priv, struct bss_info *ptr)
3550 if (!priv->wep_enabled && ptr->capa & WLAN_CAPABILITY_PRIVACY) {
3551 /* we have disabled WEP, but the BSS signals privacy */
3552 at76_dbg(DBG_BSS_MATCH,
3553 "%s: bss table entry %p: requires encryption",
3554 priv->netdev->name, ptr);
3557 /* otherwise if the BSS does not signal privacy it may well
3558 accept encrypted packets from us ... */
3562 static inline int at76_match_bssid(struct at76_priv *priv, struct bss_info *ptr)
3564 if (!priv->wanted_bssid_valid ||
3565 !compare_ether_addr(ptr->bssid, priv->wanted_bssid))
3568 at76_dbg(DBG_BSS_MATCH,
3569 "%s: requested bssid - %s does not match",
3570 priv->netdev->name, mac2str(priv->wanted_bssid));
3571 at76_dbg(DBG_BSS_MATCH,
3572 " AP bssid - %s of bss table entry %p",
3573 mac2str(ptr->bssid), ptr);
3578 * at76_match_bss - try to find a matching bss in priv->bss
3580 * last - last bss tried
3582 * last == NULL signals a new round starting with priv->bss_list.next
3583 * this function must be called inside an acquired priv->bss_list_spinlock
3584 * otherwise the timeout on bss may remove the newly chosen entry
3586 static struct bss_info *at76_match_bss(struct at76_priv *priv,
3587 struct bss_info *last)
3589 struct bss_info *ptr = NULL;
3590 struct list_head *curr;
3592 curr = last ? last->list.next : priv->bss_list.next;
3593 while (curr != &priv->bss_list) {
3594 ptr = list_entry(curr, struct bss_info, list);
3595 if (at76_match_essid(priv, ptr) && at76_match_mode(priv, ptr)
3596 && at76_match_wep(priv, ptr) && at76_match_rates(priv, ptr)
3597 && at76_match_bssid(priv, ptr))
3602 if (curr == &priv->bss_list)
3604 /* otherwise ptr points to the struct bss_info we have chosen */
3606 at76_dbg(DBG_BSS_TABLE, "%s %s: returned %p", priv->netdev->name,
3611 /* Start joining a matching BSS, or create own IBSS */
3612 static void at76_work_join(struct work_struct *work)
3614 struct at76_priv *priv = container_of(work, struct at76_priv,
3617 unsigned long flags;
3619 mutex_lock(&priv->mtx);
3621 WARN_ON(priv->mac_state != MAC_JOINING);
3622 if (priv->mac_state != MAC_JOINING)
3625 /* secure the access to priv->curr_bss ! */
3626 spin_lock_irqsave(&priv->bss_list_spinlock, flags);
3627 priv->curr_bss = at76_match_bss(priv, priv->curr_bss);
3628 spin_unlock_irqrestore(&priv->bss_list_spinlock, flags);
3630 if (!priv->curr_bss) {
3631 /* here we haven't found a matching (i)bss ... */
3632 if (priv->iw_mode == IW_MODE_ADHOC) {
3633 at76_set_mac_state(priv, MAC_OWN_IBSS);
3634 at76_start_ibss(priv);
3637 /* haven't found a matching BSS in infra mode - try again */
3638 at76_set_mac_state(priv, MAC_SCANNING);
3639 schedule_work(&priv->work_start_scan);
3643 ret = at76_join_bss(priv, priv->curr_bss);
3645 printk(KERN_ERR "%s: join_bss failed with %d\n",
3646 priv->netdev->name, ret);
3650 ret = at76_wait_completion(priv, CMD_JOIN);
3651 if (ret != CMD_STATUS_COMPLETE) {
3652 if (ret != CMD_STATUS_TIME_OUT)
3653 printk(KERN_ERR "%s: join_bss completed with %d\n",
3654 priv->netdev->name, ret);
3656 printk(KERN_INFO "%s: join_bss ssid %s timed out\n",
3658 mac2str(priv->curr_bss->bssid));
3660 /* retry next BSS immediately */
3661 schedule_work(&priv->work_join);
3665 /* here we have joined the (I)BSS */
3666 if (priv->iw_mode == IW_MODE_ADHOC) {
3667 struct bss_info *bptr = priv->curr_bss;
3668 at76_set_mac_state(priv, MAC_CONNECTED);
3669 /* get ESSID, BSSID and channel for priv->curr_bss */
3670 priv->essid_size = bptr->ssid_len;
3671 memcpy(priv->essid, bptr->ssid, bptr->ssid_len);
3672 memcpy(priv->bssid, bptr->bssid, ETH_ALEN);
3673 priv->channel = bptr->channel;
3674 at76_iwevent_bss_connect(priv->netdev, bptr->bssid);
3675 netif_carrier_on(priv->netdev);
3676 netif_start_queue(priv->netdev);
3677 /* just to be sure */
3678 cancel_delayed_work(&priv->dwork_get_scan);
3679 cancel_delayed_work(&priv->dwork_auth);
3680 cancel_delayed_work(&priv->dwork_assoc);
3683 priv->retries = AUTH_RETRIES;
3684 at76_set_mac_state(priv, MAC_AUTH);
3685 at76_auth_req(priv, priv->curr_bss, 1, NULL);
3686 at76_dbg(DBG_MGMT_TIMER,
3687 "%s:%d: starting mgmt_timer + HZ", __func__, __LINE__);
3688 schedule_delayed_work(&priv->dwork_auth, AUTH_TIMEOUT);
3692 mutex_unlock(&priv->mtx);
3695 /* Reap scan results */
3696 static void at76_dwork_get_scan(struct work_struct *work)
3700 struct at76_priv *priv = container_of(work, struct at76_priv,
3701 dwork_get_scan.work);
3703 mutex_lock(&priv->mtx);
3704 WARN_ON(priv->mac_state != MAC_SCANNING);
3705 if (priv->mac_state != MAC_SCANNING)
3708 status = at76_get_cmd_status(priv->udev, CMD_SCAN);
3710 printk(KERN_ERR "%s: %s: at76_get_cmd_status failed with %d\n",
3711 priv->netdev->name, __func__, status);
3712 status = CMD_STATUS_IN_PROGRESS;
3713 /* INFO: Hope it was a one off error - if not, scanning
3714 further down the line and stop this cycle */
3716 at76_dbg(DBG_PROGRESS,
3717 "%s %s: got cmd_status %d (state %s, need_any %d)",
3718 priv->netdev->name, __func__, status,
3719 mac_states[priv->mac_state], priv->scan_need_any);
3721 if (status != CMD_STATUS_COMPLETE) {
3722 if ((status != CMD_STATUS_IN_PROGRESS) &&
3723 (status != CMD_STATUS_IDLE))
3724 printk(KERN_ERR "%s: %s: Bad scan status: %s\n",
3725 priv->netdev->name, __func__,
3726 at76_get_cmd_status_string(status));
3728 /* the first cmd status after scan start is always a IDLE ->
3729 start the timer to poll again until COMPLETED */
3730 at76_dbg(DBG_MGMT_TIMER,
3731 "%s:%d: starting mgmt_timer for %d ticks",
3732 __func__, __LINE__, SCAN_POLL_INTERVAL);
3733 schedule_delayed_work(&priv->dwork_get_scan,
3734 SCAN_POLL_INTERVAL);
3738 if (at76_debug & DBG_BSS_TABLE)
3739 at76_dump_bss_table(priv);
3741 if (priv->scan_need_any) {
3742 ret = at76_start_scan(priv, 0);
3745 "%s: %s: start_scan (ANY) failed with %d\n",
3746 priv->netdev->name, __func__, ret);
3747 at76_dbg(DBG_MGMT_TIMER,
3748 "%s:%d: starting mgmt_timer for %d ticks", __func__,
3749 __LINE__, SCAN_POLL_INTERVAL);
3750 schedule_delayed_work(&priv->dwork_get_scan,
3751 SCAN_POLL_INTERVAL);
3752 priv->scan_need_any = 0;
3754 priv->scan_state = SCAN_COMPLETED;
3755 /* report the end of scan to user space */
3756 at76_iwevent_scan_complete(priv->netdev);
3757 at76_set_mac_state(priv, MAC_JOINING);
3758 schedule_work(&priv->work_join);
3762 mutex_unlock(&priv->mtx);
3765 /* Handle loss of beacons from the AP */
3766 static void at76_dwork_beacon(struct work_struct *work)
3768 struct at76_priv *priv = container_of(work, struct at76_priv,
3771 mutex_lock(&priv->mtx);
3772 if (priv->mac_state != MAC_CONNECTED || priv->iw_mode != IW_MODE_INFRA)
3775 /* We haven't received any beacons from out AP for BEACON_TIMEOUT */
3776 printk(KERN_INFO "%s: lost beacon bssid %s\n",
3777 priv->netdev->name, mac2str(priv->curr_bss->bssid));
3779 netif_carrier_off(priv->netdev);
3780 netif_stop_queue(priv->netdev);
3781 at76_iwevent_bss_disconnect(priv->netdev);
3782 at76_set_mac_state(priv, MAC_SCANNING);
3783 schedule_work(&priv->work_start_scan);
3786 mutex_unlock(&priv->mtx);
3789 /* Handle authentication response timeout */
3790 static void at76_dwork_auth(struct work_struct *work)
3792 struct at76_priv *priv = container_of(work, struct at76_priv,
3795 mutex_lock(&priv->mtx);
3796 WARN_ON(priv->mac_state != MAC_AUTH);
3797 if (priv->mac_state != MAC_AUTH)
3800 at76_dbg(DBG_PROGRESS, "%s: authentication response timeout",
3801 priv->netdev->name);
3803 if (priv->retries-- >= 0) {
3804 at76_auth_req(priv, priv->curr_bss, 1, NULL);
3805 at76_dbg(DBG_MGMT_TIMER, "%s:%d: starting mgmt_timer + HZ",
3806 __func__, __LINE__);
3807 schedule_delayed_work(&priv->dwork_auth, AUTH_TIMEOUT);
3809 /* try to get next matching BSS */
3810 at76_set_mac_state(priv, MAC_JOINING);
3811 schedule_work(&priv->work_join);
3815 mutex_unlock(&priv->mtx);
3818 /* Handle association response timeout */
3819 static void at76_dwork_assoc(struct work_struct *work)
3821 struct at76_priv *priv = container_of(work, struct at76_priv,
3824 mutex_lock(&priv->mtx);
3825 WARN_ON(priv->mac_state != MAC_ASSOC);
3826 if (priv->mac_state != MAC_ASSOC)
3829 at76_dbg(DBG_PROGRESS, "%s: association response timeout",
3830 priv->netdev->name);
3832 if (priv->retries-- >= 0) {
3833 at76_assoc_req(priv, priv->curr_bss);
3834 at76_dbg(DBG_MGMT_TIMER, "%s:%d: starting mgmt_timer + HZ",
3835 __func__, __LINE__);
3836 schedule_delayed_work(&priv->dwork_assoc, ASSOC_TIMEOUT);
3838 /* try to get next matching BSS */
3839 at76_set_mac_state(priv, MAC_JOINING);
3840 schedule_work(&priv->work_join);
3844 mutex_unlock(&priv->mtx);
3847 /* Read new bssid in ad-hoc mode */
3848 static void at76_work_new_bss(struct work_struct *work)
3850 struct at76_priv *priv = container_of(work, struct at76_priv,
3853 struct mib_mac_mgmt mac_mgmt;
3855 mutex_lock(&priv->mtx);
3857 ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, &mac_mgmt,
3858 sizeof(struct mib_mac_mgmt));
3860 printk(KERN_ERR "%s: at76_get_mib failed: %d\n",
3861 priv->netdev->name, ret);
3865 at76_dbg(DBG_PROGRESS, "ibss_change = 0x%2x", mac_mgmt.ibss_change);
3866 memcpy(priv->bssid, mac_mgmt.current_bssid, ETH_ALEN);
3867 at76_dbg(DBG_PROGRESS, "using BSSID %s", mac2str(priv->bssid));
3869 at76_iwevent_bss_connect(priv->netdev, priv->bssid);
3871 priv->mib_buf.type = MIB_MAC_MGMT;
3872 priv->mib_buf.size = 1;
3873 priv->mib_buf.index = offsetof(struct mib_mac_mgmt, ibss_change);
3874 priv->mib_buf.data.byte = 0;
3876 ret = at76_set_mib(priv, &priv->mib_buf);
3878 printk(KERN_ERR "%s: set_mib (ibss change ok) failed: %d\n",
3879 priv->netdev->name, ret);
3882 mutex_unlock(&priv->mtx);
3885 static int at76_startup_device(struct at76_priv *priv)
3887 struct at76_card_config *ccfg = &priv->card_config;
3890 at76_dbg(DBG_PARAMS,
3891 "%s param: ssid %.*s (%s) mode %s ch %d wep %s key %d "
3892 "keylen %d", priv->netdev->name, priv->essid_size, priv->essid,
3893 hex2str(priv->essid, IW_ESSID_MAX_SIZE),
3894 priv->iw_mode == IW_MODE_ADHOC ? "adhoc" : "infra",
3895 priv->channel, priv->wep_enabled ? "enabled" : "disabled",
3896 priv->wep_key_id, priv->wep_keys_len[priv->wep_key_id]);
3897 at76_dbg(DBG_PARAMS,
3898 "%s param: preamble %s rts %d retry %d frag %d "
3899 "txrate %s auth_mode %d", priv->netdev->name,
3900 preambles[priv->preamble_type], priv->rts_threshold,
3901 priv->short_retry_limit, priv->frag_threshold,
3902 priv->txrate == TX_RATE_1MBIT ? "1MBit" : priv->txrate ==
3903 TX_RATE_2MBIT ? "2MBit" : priv->txrate ==
3904 TX_RATE_5_5MBIT ? "5.5MBit" : priv->txrate ==
3905 TX_RATE_11MBIT ? "11MBit" : priv->txrate ==
3906 TX_RATE_AUTO ? "auto" : "<invalid>", priv->auth_mode);
3907 at76_dbg(DBG_PARAMS,
3908 "%s param: pm_mode %d pm_period %d auth_mode %s "
3909 "scan_times %d %d scan_mode %s",
3910 priv->netdev->name, priv->pm_mode, priv->pm_period,
3911 priv->auth_mode == WLAN_AUTH_OPEN ? "open" : "shared_secret",
3912 priv->scan_min_time, priv->scan_max_time,
3913 priv->scan_mode == SCAN_TYPE_ACTIVE ? "active" : "passive");
3915 memset(ccfg, 0, sizeof(struct at76_card_config));
3916 ccfg->promiscuous_mode = 0;
3917 ccfg->short_retry_limit = priv->short_retry_limit;
3919 if (priv->wep_enabled) {
3920 if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN)
3921 ccfg->encryption_type = 2;
3923 ccfg->encryption_type = 1;
3925 /* jal: always exclude unencrypted if WEP is active */
3926 ccfg->exclude_unencrypted = 1;
3928 ccfg->exclude_unencrypted = 0;
3929 ccfg->encryption_type = 0;
3932 ccfg->rts_threshold = cpu_to_le16(priv->rts_threshold);
3933 ccfg->fragmentation_threshold = cpu_to_le16(priv->frag_threshold);
3935 memcpy(ccfg->basic_rate_set, hw_rates, 4);
3936 /* jal: really needed, we do a set_mib for autorate later ??? */
3937 ccfg->auto_rate_fallback = (priv->txrate == TX_RATE_AUTO ? 1 : 0);
3938 ccfg->channel = priv->channel;
3939 ccfg->privacy_invoked = priv->wep_enabled;
3940 memcpy(ccfg->current_ssid, priv->essid, IW_ESSID_MAX_SIZE);
3941 ccfg->ssid_len = priv->essid_size;
3943 ccfg->wep_default_key_id = priv->wep_key_id;
3944 memcpy(ccfg->wep_default_key_value, priv->wep_keys, 4 * WEP_KEY_LEN);
3946 ccfg->short_preamble = priv->preamble_type;
3947 ccfg->beacon_period = cpu_to_le16(priv->beacon_period);
3949 ret = at76_set_card_command(priv->udev, CMD_STARTUP, &priv->card_config,
3950 sizeof(struct at76_card_config));
3952 printk(KERN_ERR "%s: at76_set_card_command failed: %d\n",
3953 priv->netdev->name, ret);
3957 at76_wait_completion(priv, CMD_STARTUP);
3959 /* remove BSSID from previous run */
3960 memset(priv->bssid, 0, ETH_ALEN);
3962 if (at76_set_radio(priv, 1) == 1)
3963 at76_wait_completion(priv, CMD_RADIO_ON);
3965 ret = at76_set_preamble(priv, priv->preamble_type);
3969 ret = at76_set_frag(priv, priv->frag_threshold);
3973 ret = at76_set_rts(priv, priv->rts_threshold);
3977 ret = at76_set_autorate_fallback(priv,
3978 priv->txrate == TX_RATE_AUTO ? 1 : 0);
3982 ret = at76_set_pm_mode(priv);
3986 if (at76_debug & DBG_MIB) {
3987 at76_dump_mib_mac(priv);
3988 at76_dump_mib_mac_addr(priv);
3989 at76_dump_mib_mac_mgmt(priv);
3990 at76_dump_mib_mac_wep(priv);
3991 at76_dump_mib_mdomain(priv);
3992 at76_dump_mib_phy(priv);
3993 at76_dump_mib_local(priv);
3999 /* Restart the interface */
4000 static void at76_dwork_restart(struct work_struct *work)
4002 struct at76_priv *priv = container_of(work, struct at76_priv,
4003 dwork_restart.work);
4005 mutex_lock(&priv->mtx);
4007 netif_carrier_off(priv->netdev); /* stop netdev watchdog */
4008 netif_stop_queue(priv->netdev); /* stop tx data packets */
4010 at76_startup_device(priv);
4012 if (priv->iw_mode != IW_MODE_MONITOR) {
4013 priv->netdev->type = ARPHRD_ETHER;
4014 at76_set_mac_state(priv, MAC_SCANNING);
4015 schedule_work(&priv->work_start_scan);
4017 priv->netdev->type = ARPHRD_IEEE80211_RADIOTAP;
4018 at76_start_monitor(priv);
4021 mutex_unlock(&priv->mtx);
4024 /* Initiate scanning */
4025 static void at76_work_start_scan(struct work_struct *work)
4027 struct at76_priv *priv = container_of(work, struct at76_priv,
4031 mutex_lock(&priv->mtx);
4033 WARN_ON(priv->mac_state != MAC_SCANNING);
4034 if (priv->mac_state != MAC_SCANNING)
4037 /* only clear the bss list when a scan is actively initiated,
4038 * otherwise simply rely on at76_bss_list_timeout */
4039 if (priv->scan_state == SCAN_IN_PROGRESS) {
4040 at76_free_bss_list(priv);
4041 priv->scan_need_any = 1;
4043 priv->scan_need_any = 0;
4045 ret = at76_start_scan(priv, 1);
4048 printk(KERN_ERR "%s: %s: start_scan failed with %d\n",
4049 priv->netdev->name, __func__, ret);
4051 at76_dbg(DBG_MGMT_TIMER,
4052 "%s:%d: starting mgmt_timer for %d ticks",
4053 __func__, __LINE__, SCAN_POLL_INTERVAL);
4054 schedule_delayed_work(&priv->dwork_get_scan,
4055 SCAN_POLL_INTERVAL);
4059 mutex_unlock(&priv->mtx);
4062 /* Enable or disable promiscuous mode */
4063 static void at76_work_set_promisc(struct work_struct *work)
4065 struct at76_priv *priv = container_of(work, struct at76_priv,
4069 mutex_lock(&priv->mtx);
4071 priv->mib_buf.type = MIB_LOCAL;
4072 priv->mib_buf.size = 1;
4073 priv->mib_buf.index = offsetof(struct mib_local, promiscuous_mode);
4074 priv->mib_buf.data.byte = priv->promisc ? 1 : 0;
4076 ret = at76_set_mib(priv, &priv->mib_buf);
4078 printk(KERN_ERR "%s: set_mib (promiscuous_mode) failed: %d\n",
4079 priv->netdev->name, ret);
4081 mutex_unlock(&priv->mtx);
4084 /* Submit Rx urb back to the device */
4085 static void at76_work_submit_rx(struct work_struct *work)
4087 struct at76_priv *priv = container_of(work, struct at76_priv,
4090 mutex_lock(&priv->mtx);
4091 at76_submit_rx_urb(priv);
4092 mutex_unlock(&priv->mtx);
4095 /* We got an association response */
4096 static void at76_rx_mgmt_assoc(struct at76_priv *priv,
4097 struct at76_rx_buffer *buf)
4099 struct ieee80211_assoc_response *resp =
4100 (struct ieee80211_assoc_response *)buf->packet;
4101 u16 assoc_id = le16_to_cpu(resp->aid);
4102 u16 status = le16_to_cpu(resp->status);
4104 at76_dbg(DBG_RX_MGMT, "%s: rx AssocResp bssid %s capa 0x%04x status "
4105 "0x%04x assoc_id 0x%04x rates %s", priv->netdev->name,
4106 mac2str(resp->header.addr3), le16_to_cpu(resp->capability),
4107 status, assoc_id, hex2str(resp->info_element->data,
4108 resp->info_element->len));
4110 if (priv->mac_state != MAC_ASSOC) {
4111 printk(KERN_INFO "%s: AssocResp in state %s ignored\n",
4112 priv->netdev->name, mac_states[priv->mac_state]);
4116 BUG_ON(!priv->curr_bss);
4118 cancel_delayed_work(&priv->dwork_assoc);
4119 if (status == WLAN_STATUS_SUCCESS) {
4120 struct bss_info *ptr = priv->curr_bss;
4121 priv->assoc_id = assoc_id & 0x3fff;
4122 /* update iwconfig params */
4123 memcpy(priv->bssid, ptr->bssid, ETH_ALEN);
4124 memcpy(priv->essid, ptr->ssid, ptr->ssid_len);
4125 priv->essid_size = ptr->ssid_len;
4126 priv->channel = ptr->channel;
4127 schedule_work(&priv->work_assoc_done);
4129 at76_set_mac_state(priv, MAC_JOINING);
4130 schedule_work(&priv->work_join);
4134 /* Process disassociation request from the AP */
4135 static void at76_rx_mgmt_disassoc(struct at76_priv *priv,
4136 struct at76_rx_buffer *buf)
4138 struct ieee80211_disassoc *resp =
4139 (struct ieee80211_disassoc *)buf->packet;
4140 struct ieee80211_hdr_3addr *mgmt = &resp->header;
4142 at76_dbg(DBG_RX_MGMT,
4143 "%s: rx DisAssoc bssid %s reason 0x%04x destination %s",
4144 priv->netdev->name, mac2str(mgmt->addr3),
4145 le16_to_cpu(resp->reason), mac2str(mgmt->addr1));
4147 /* We are not connected, ignore */
4148 if (priv->mac_state == MAC_SCANNING || priv->mac_state == MAC_INIT
4152 /* Not our BSSID, ignore */
4153 if (compare_ether_addr(mgmt->addr3, priv->curr_bss->bssid))
4156 /* Not for our STA and not broadcast, ignore */
4157 if (compare_ether_addr(priv->netdev->dev_addr, mgmt->addr1)
4158 && !is_broadcast_ether_addr(mgmt->addr1))
4161 if (priv->mac_state != MAC_ASSOC && priv->mac_state != MAC_CONNECTED
4162 && priv->mac_state != MAC_JOINING) {
4163 printk(KERN_INFO "%s: DisAssoc in state %s ignored\n",
4164 priv->netdev->name, mac_states[priv->mac_state]);
4168 if (priv->mac_state == MAC_CONNECTED) {
4169 netif_carrier_off(priv->netdev);
4170 netif_stop_queue(priv->netdev);
4171 at76_iwevent_bss_disconnect(priv->netdev);
4173 cancel_delayed_work(&priv->dwork_get_scan);
4174 cancel_delayed_work(&priv->dwork_beacon);
4175 cancel_delayed_work(&priv->dwork_auth);
4176 cancel_delayed_work(&priv->dwork_assoc);
4177 at76_set_mac_state(priv, MAC_JOINING);
4178 schedule_work(&priv->work_join);
4181 static void at76_rx_mgmt_auth(struct at76_priv *priv,
4182 struct at76_rx_buffer *buf)
4184 struct ieee80211_auth *resp = (struct ieee80211_auth *)buf->packet;
4185 struct ieee80211_hdr_3addr *mgmt = &resp->header;
4186 int seq_nr = le16_to_cpu(resp->transaction);
4187 int alg = le16_to_cpu(resp->algorithm);
4188 int status = le16_to_cpu(resp->status);
4190 at76_dbg(DBG_RX_MGMT,
4191 "%s: rx AuthFrame bssid %s alg %d seq_nr %d status %d "
4192 "destination %s", priv->netdev->name, mac2str(mgmt->addr3),
4193 alg, seq_nr, status, mac2str(mgmt->addr1));
4195 if (alg == WLAN_AUTH_SHARED_KEY && seq_nr == 2)
4196 at76_dbg(DBG_RX_MGMT, "%s: AuthFrame challenge %s ...",
4197 priv->netdev->name, hex2str(resp->info_element, 18));
4199 if (priv->mac_state != MAC_AUTH) {
4200 printk(KERN_INFO "%s: ignored AuthFrame in state %s\n",
4201 priv->netdev->name, mac_states[priv->mac_state]);
4204 if (priv->auth_mode != alg) {
4205 printk(KERN_INFO "%s: ignored AuthFrame for alg %d\n",
4206 priv->netdev->name, alg);
4210 BUG_ON(!priv->curr_bss);
4212 /* Not our BSSID or not for our STA, ignore */
4213 if (compare_ether_addr(mgmt->addr3, priv->curr_bss->bssid)
4214 || compare_ether_addr(priv->netdev->dev_addr, mgmt->addr1))
4217 cancel_delayed_work(&priv->dwork_auth);
4218 if (status != WLAN_STATUS_SUCCESS) {
4219 /* try to join next bss */
4220 at76_set_mac_state(priv, MAC_JOINING);
4221 schedule_work(&priv->work_join);
4225 if (priv->auth_mode == WLAN_AUTH_OPEN || seq_nr == 4) {
4226 priv->retries = ASSOC_RETRIES;
4227 at76_set_mac_state(priv, MAC_ASSOC);
4228 at76_assoc_req(priv, priv->curr_bss);
4229 at76_dbg(DBG_MGMT_TIMER,
4230 "%s:%d: starting mgmt_timer + HZ", __func__, __LINE__);
4231 schedule_delayed_work(&priv->dwork_assoc, ASSOC_TIMEOUT);
4235 WARN_ON(seq_nr != 2);
4236 at76_auth_req(priv, priv->curr_bss, seq_nr + 1, resp->info_element);
4237 at76_dbg(DBG_MGMT_TIMER, "%s:%d: starting mgmt_timer + HZ", __func__,
4239 schedule_delayed_work(&priv->dwork_auth, AUTH_TIMEOUT);
4242 static void at76_rx_mgmt_deauth(struct at76_priv *priv,
4243 struct at76_rx_buffer *buf)
4245 struct ieee80211_disassoc *resp =
4246 (struct ieee80211_disassoc *)buf->packet;
4247 struct ieee80211_hdr_3addr *mgmt = &resp->header;
4249 at76_dbg(DBG_RX_MGMT | DBG_PROGRESS,
4250 "%s: rx DeAuth bssid %s reason 0x%04x destination %s",
4251 priv->netdev->name, mac2str(mgmt->addr3),
4252 le16_to_cpu(resp->reason), mac2str(mgmt->addr1));
4254 if (priv->mac_state != MAC_AUTH && priv->mac_state != MAC_ASSOC
4255 && priv->mac_state != MAC_CONNECTED) {
4256 printk(KERN_INFO "%s: DeAuth in state %s ignored\n",
4257 priv->netdev->name, mac_states[priv->mac_state]);
4261 BUG_ON(!priv->curr_bss);
4263 /* Not our BSSID, ignore */
4264 if (compare_ether_addr(mgmt->addr3, priv->curr_bss->bssid))
4267 /* Not for our STA and not broadcast, ignore */
4268 if (compare_ether_addr(priv->netdev->dev_addr, mgmt->addr1)
4269 && !is_broadcast_ether_addr(mgmt->addr1))
4272 if (priv->mac_state == MAC_CONNECTED)
4273 at76_iwevent_bss_disconnect(priv->netdev);
4275 at76_set_mac_state(priv, MAC_JOINING);
4276 schedule_work(&priv->work_join);
4277 cancel_delayed_work(&priv->dwork_get_scan);
4278 cancel_delayed_work(&priv->dwork_beacon);
4279 cancel_delayed_work(&priv->dwork_auth);
4280 cancel_delayed_work(&priv->dwork_assoc);
4283 static void at76_rx_mgmt_beacon(struct at76_priv *priv,
4284 struct at76_rx_buffer *buf)
4287 /* beacon content */
4288 struct ieee80211_beacon *bdata = (struct ieee80211_beacon *)buf->packet;
4289 struct ieee80211_hdr_3addr *mgmt = &bdata->header;
4291 struct list_head *lptr;
4292 struct bss_info *match; /* entry matching addr3 with its bssid */
4295 struct ieee80211_info_element *ie;
4298 int have_channel = 0;
4300 unsigned long flags;
4302 spin_lock_irqsave(&priv->bss_list_spinlock, flags);
4303 if (priv->mac_state == MAC_CONNECTED) {
4304 /* in state MAC_CONNECTED we use the mgmt_timer to control
4305 the beacon of the BSS */
4306 BUG_ON(!priv->curr_bss);
4308 if (!compare_ether_addr(priv->curr_bss->bssid, mgmt->addr3)) {
4309 /* We got our AP's beacon, defer the timeout handler.
4310 Kill pending work first, as schedule_delayed_work()
4312 cancel_delayed_work(&priv->dwork_beacon);
4313 schedule_delayed_work(&priv->dwork_beacon,
4315 priv->curr_bss->rssi = buf->rssi;
4316 priv->beacons_received++;
4321 /* look if we have this BSS already in the list */
4324 if (!list_empty(&priv->bss_list)) {
4325 list_for_each(lptr, &priv->bss_list) {
4326 struct bss_info *bss_ptr =
4327 list_entry(lptr, struct bss_info, list);
4328 if (!compare_ether_addr(bss_ptr->bssid, mgmt->addr3)) {
4336 /* BSS not in the list - append it */
4337 match = kzalloc(sizeof(struct bss_info), GFP_ATOMIC);
4339 at76_dbg(DBG_BSS_TABLE,
4340 "%s: cannot kmalloc new bss info (%zd byte)",
4341 priv->netdev->name, sizeof(struct bss_info));
4345 list_add_tail(&match->list, &priv->bss_list);
4348 match->capa = le16_to_cpu(bdata->capability);
4349 match->beacon_interval = le16_to_cpu(bdata->beacon_interval);
4350 match->rssi = buf->rssi;
4351 match->link_qual = buf->link_quality;
4352 match->noise_level = buf->noise_level;
4353 memcpy(match->bssid, mgmt->addr3, ETH_ALEN);
4354 at76_dbg(DBG_RX_BEACON, "%s: bssid %s", priv->netdev->name,
4355 mac2str(match->bssid));
4357 ie = bdata->info_element;
4359 /* length of var length beacon parameters */
4360 varpar_len = min_t(int, le16_to_cpu(buf->wlength) -
4361 sizeof(struct ieee80211_beacon),
4362 BEACON_MAX_DATA_LENGTH);
4364 /* This routine steps through the bdata->data array to get
4365 * some useful information about the access point.
4366 * Currently, this implementation supports receipt of: SSID,
4367 * supported transfer rates and channel, in any order, with some
4368 * tolerance for intermittent unknown codes (although this
4369 * functionality may not be necessary as the useful information will
4370 * usually arrive in consecutively, but there have been some
4371 * reports of some of the useful information fields arriving in a
4373 * It does not support any more IE types although MFIE_TYPE_TIM may
4374 * be supported (on my AP at least).
4375 * The bdata->data array is about 1500 bytes long but only ~36 of those
4376 * bytes are useful, hence the have_ssid etc optimizations. */
4378 while (keep_going &&
4379 ((&ie->data[ie->len] - (u8 *)bdata->info_element) <=
4384 case MFIE_TYPE_SSID:
4388 len = min_t(int, IW_ESSID_MAX_SIZE, ie->len);
4390 /* we copy only if this is a new entry,
4391 or the incoming SSID is not a hidden SSID. This
4392 will protect us from overwriting a real SSID read
4393 in a ProbeResponse with a hidden one from a
4394 following beacon. */
4395 if (!new_entry && at76_is_hidden_ssid(ie->data, len)) {
4400 match->ssid_len = len;
4401 memcpy(match->ssid, ie->data, len);
4402 at76_dbg(DBG_RX_BEACON, "%s: SSID - %.*s",
4403 priv->netdev->name, len, match->ssid);
4407 case MFIE_TYPE_RATES:
4412 min_t(int, sizeof(match->rates), ie->len);
4413 memcpy(match->rates, ie->data, match->rates_len);
4415 at76_dbg(DBG_RX_BEACON, "%s: SUPPORTED RATES %s",
4417 hex2str(ie->data, ie->len));
4420 case MFIE_TYPE_DS_SET:
4424 match->channel = ie->data[0];
4426 at76_dbg(DBG_RX_BEACON, "%s: CHANNEL - %d",
4427 priv->netdev->name, match->channel);
4430 case MFIE_TYPE_CF_SET:
4432 case MFIE_TYPE_IBSS_SET:
4434 at76_dbg(DBG_RX_BEACON, "%s: beacon IE id %d len %d %s",
4435 priv->netdev->name, ie->id, ie->len,
4436 hex2str(ie->data, ie->len));
4440 /* advance to the next informational element */
4443 /* Optimization: after all, the bdata->data array is
4444 * varpar_len bytes long, whereas we get all of the useful
4445 * information after only ~36 bytes, this saves us a lot of
4446 * time (and trouble as the remaining portion of the array
4447 * could be full of junk)
4448 * Comment this out if you want to see what other information
4449 * comes from the AP - although little of it may be useful */
4452 at76_dbg(DBG_RX_BEACON, "%s: Finished processing beacon data",
4453 priv->netdev->name);
4455 match->last_rx = jiffies; /* record last rx of beacon */
4458 spin_unlock_irqrestore(&priv->bss_list_spinlock, flags);
4461 /* Calculate the link level from a given rx_buffer */
4462 static void at76_calc_level(struct at76_priv *priv, struct at76_rx_buffer *buf,
4463 struct iw_quality *qual)
4465 /* just a guess for now, might be different for other chips */
4468 qual->level = (buf->rssi * 100 / max_rssi);
4469 if (qual->level > 100)
4471 qual->updated |= IW_QUAL_LEVEL_UPDATED;
4474 /* Calculate the link quality from a given rx_buffer */
4475 static void at76_calc_qual(struct at76_priv *priv, struct at76_rx_buffer *buf,
4476 struct iw_quality *qual)
4478 if (at76_is_intersil(priv->board_type))
4479 qual->qual = buf->link_quality;
4481 unsigned long elapsed;
4483 /* Update qual at most once a second */
4484 elapsed = jiffies - priv->beacons_last_qual;
4485 if (elapsed < 1 * HZ)
4488 qual->qual = qual->level * priv->beacons_received *
4489 msecs_to_jiffies(priv->beacon_period) / elapsed;
4491 priv->beacons_last_qual = jiffies;
4492 priv->beacons_received = 0;
4494 qual->qual = (qual->qual > 100) ? 100 : qual->qual;
4495 qual->updated |= IW_QUAL_QUAL_UPDATED;
4498 /* Calculate the noise quality from a given rx_buffer */
4499 static void at76_calc_noise(struct at76_priv *priv, struct at76_rx_buffer *buf,
4500 struct iw_quality *qual)
4503 qual->updated |= IW_QUAL_NOISE_INVALID;
4506 static void at76_update_wstats(struct at76_priv *priv,
4507 struct at76_rx_buffer *buf)
4509 struct iw_quality *qual = &priv->wstats.qual;
4511 if (buf->rssi && priv->mac_state == MAC_CONNECTED) {
4513 at76_calc_level(priv, buf, qual);
4514 at76_calc_qual(priv, buf, qual);
4515 at76_calc_noise(priv, buf, qual);
4520 qual->updated = IW_QUAL_ALL_INVALID;
4524 static void at76_rx_mgmt(struct at76_priv *priv, struct at76_rx_buffer *buf)
4526 struct ieee80211_hdr_3addr *mgmt =
4527 (struct ieee80211_hdr_3addr *)buf->packet;
4528 u16 framectl = le16_to_cpu(mgmt->frame_ctl);
4531 if (priv->mac_state != MAC_INIT && priv->mac_state != MAC_SCANNING) {
4532 /* jal: this is a dirty hack needed by Tim in ad-hoc mode */
4533 /* Data packets always seem to have a 0 link level, so we
4534 only read link quality info from management packets.
4535 Atmel driver actually averages the present, and previous
4536 values, we just present the raw value at the moment - TJS */
4537 if (priv->iw_mode == IW_MODE_ADHOC
4539 && !compare_ether_addr(mgmt->addr3,
4540 priv->curr_bss->bssid)))
4541 at76_update_wstats(priv, buf);
4544 at76_dbg(DBG_RX_MGMT_CONTENT, "%s rx mgmt framectl 0x%x %s",
4545 priv->netdev->name, framectl,
4546 hex2str(mgmt, le16_to_cpu(buf->wlength)));
4548 switch (framectl & IEEE80211_FCTL_STYPE) {
4549 case IEEE80211_STYPE_BEACON:
4550 case IEEE80211_STYPE_PROBE_RESP:
4551 at76_rx_mgmt_beacon(priv, buf);
4554 case IEEE80211_STYPE_ASSOC_RESP:
4555 at76_rx_mgmt_assoc(priv, buf);
4558 case IEEE80211_STYPE_DISASSOC:
4559 at76_rx_mgmt_disassoc(priv, buf);
4562 case IEEE80211_STYPE_AUTH:
4563 at76_rx_mgmt_auth(priv, buf);
4566 case IEEE80211_STYPE_DEAUTH:
4567 at76_rx_mgmt_deauth(priv, buf);
4571 printk(KERN_DEBUG "%s: ignoring frame with framectl 0x%04x\n",
4572 priv->netdev->name, framectl);
4578 /* Convert the 802.11 header into an ethernet-style header, make skb
4579 * ready for consumption by netif_rx() */
4580 static void at76_ieee80211_to_eth(struct sk_buff *skb, int iw_mode)
4582 struct ieee80211_hdr_3addr *i802_11_hdr;
4583 struct ethhdr *eth_hdr_p;
4587 i802_11_hdr = (struct ieee80211_hdr_3addr *)skb->data;
4589 /* That would be the ethernet header if the hardware converted
4590 * the frame for us. Make sure the source and the destination
4591 * match the 802.11 header. Which hardware does it? */
4592 eth_hdr_p = (struct ethhdr *)skb_pull(skb, IEEE80211_3ADDR_LEN);
4594 dest_addr = i802_11_hdr->addr1;
4595 if (iw_mode == IW_MODE_ADHOC)
4596 src_addr = i802_11_hdr->addr2;
4598 src_addr = i802_11_hdr->addr3;
4600 if (!compare_ether_addr(eth_hdr_p->h_source, src_addr) &&
4601 !compare_ether_addr(eth_hdr_p->h_dest, dest_addr))
4602 /* Yes, we already have an ethernet header */
4603 skb_reset_mac_header(skb);
4607 /* Need to build an ethernet header */
4608 if (!memcmp(skb->data, snapsig, sizeof(snapsig))) {
4609 /* SNAP frame - decapsulate, keep proto */
4610 skb_push(skb, offsetof(struct ethhdr, h_proto) -
4611 sizeof(rfc1042sig));
4614 /* 802.3 frame, proto is length */
4616 skb_push(skb, ETH_HLEN);
4619 skb_reset_mac_header(skb);
4620 eth_hdr_p = eth_hdr(skb);
4621 /* This needs to be done in this order (eth_hdr_p->h_dest may
4622 * overlap src_addr) */
4623 memcpy(eth_hdr_p->h_source, src_addr, ETH_ALEN);
4624 memcpy(eth_hdr_p->h_dest, dest_addr, ETH_ALEN);
4626 eth_hdr_p->h_proto = htons(len);
4629 skb->protocol = eth_type_trans(skb, skb->dev);
4632 /* Check for fragmented data in priv->rx_skb. If the packet was no fragment
4633 or it was the last of a fragment set a skb containing the whole packet
4634 is returned for further processing. Otherwise we get NULL and are
4635 done and the packet is either stored inside the fragment buffer
4636 or thrown away. Every returned skb starts with the ieee802_11 header
4637 and contains _no_ FCS at the end */
4638 static struct sk_buff *at76_check_for_rx_frags(struct at76_priv *priv)
4640 struct sk_buff *skb = priv->rx_skb;
4641 struct at76_rx_buffer *buf = (struct at76_rx_buffer *)skb->data;
4642 struct ieee80211_hdr_3addr *i802_11_hdr =
4643 (struct ieee80211_hdr_3addr *)buf->packet;
4644 /* seq_ctrl, fragment_number, sequence number of new packet */
4645 u16 sctl = le16_to_cpu(i802_11_hdr->seq_ctl);
4646 u16 fragnr = sctl & 0xf;
4647 u16 seqnr = sctl >> 4;
4648 u16 frame_ctl = le16_to_cpu(i802_11_hdr->frame_ctl);
4650 /* Length including the IEEE802.11 header, but without the trailing
4651 * FCS and without the Atmel Rx header */
4652 int length = le16_to_cpu(buf->wlength) - IEEE80211_FCS_LEN;
4654 /* where does the data payload start in skb->data ? */
4655 u8 *data = i802_11_hdr->payload;
4657 /* length of payload, excl. the trailing FCS */
4658 int data_len = length - IEEE80211_3ADDR_LEN;
4661 struct rx_data_buf *bptr, *optr;
4662 unsigned long oldest = ~0UL;
4664 at76_dbg(DBG_RX_FRAGS,
4665 "%s: rx data frame_ctl %04x addr2 %s seq/frag %d/%d "
4666 "length %d data %d: %s ...", priv->netdev->name, frame_ctl,
4667 mac2str(i802_11_hdr->addr2), seqnr, fragnr, length, data_len,
4670 at76_dbg(DBG_RX_FRAGS_SKB, "%s: incoming skb: head %p data %p "
4671 "tail %p end %p len %d", priv->netdev->name, skb->head,
4672 skb->data, skb_tail_pointer(skb), skb_end_pointer(skb),
4676 /* make sure data starts in the buffer */
4677 printk(KERN_INFO "%s: data frame too short\n",
4678 priv->netdev->name);
4682 WARN_ON(length <= AT76_RX_HDRLEN);
4683 if (length <= AT76_RX_HDRLEN)
4686 /* remove the at76_rx_buffer header - we don't need it anymore */
4687 /* we need the IEEE802.11 header (for the addresses) if this packet
4688 is the first of a chain */
4689 skb_pull(skb, AT76_RX_HDRLEN);
4691 /* remove FCS at end */
4692 skb_trim(skb, length);
4694 at76_dbg(DBG_RX_FRAGS_SKB, "%s: trimmed skb: head %p data %p tail %p "
4695 "end %p len %d data %p data_len %d", priv->netdev->name,
4696 skb->head, skb->data, skb_tail_pointer(skb),
4697 skb_end_pointer(skb), skb->len, data, data_len);
4699 if (fragnr == 0 && !(frame_ctl & IEEE80211_FCTL_MOREFRAGS)) {
4700 /* unfragmented packet received */
4701 /* Use a new skb for the next receive */
4702 priv->rx_skb = NULL;
4703 at76_dbg(DBG_RX_FRAGS, "%s: unfragmented", priv->netdev->name);
4707 /* look if we've got a chain for the sender address.
4708 afterwards optr points to first free or the oldest entry,
4709 or, if i < NR_RX_DATA_BUF, bptr points to the entry for the
4711 /* determining the oldest entry doesn't cope with jiffies wrapping
4712 but I don't care to delete a young entry at these rare moments ... */
4714 bptr = priv->rx_data;
4716 for (i = 0; i < NR_RX_DATA_BUF; i++, bptr++) {
4723 if (!compare_ether_addr(i802_11_hdr->addr2, bptr->sender))
4728 oldest = bptr->last_rx;
4729 } else if (bptr->last_rx < oldest)
4733 if (i < NR_RX_DATA_BUF) {
4735 at76_dbg(DBG_RX_FRAGS, "%s: %d. cacheentry (seq/frag = %d/%d) "
4736 "matched sender addr",
4737 priv->netdev->name, i, bptr->seqnr, bptr->fragnr);
4739 /* bptr points to an entry for the sender address */
4740 if (bptr->seqnr == seqnr) {
4742 /* the fragment has the current sequence number */
4743 if (((bptr->fragnr + 1) & 0xf) != fragnr) {
4744 /* wrong fragment number -> ignore it */
4745 /* is & 0xf necessary above ??? */
4746 at76_dbg(DBG_RX_FRAGS,
4747 "%s: frag nr mismatch: %d + 1 != %d",
4748 priv->netdev->name, bptr->fragnr,
4752 bptr->last_rx = jiffies;
4753 /* the next following fragment number ->
4754 add the data at the end */
4756 /* for test only ??? */
4757 left = skb_tailroom(bptr->skb);
4758 if (left < data_len)
4760 "%s: only %d byte free (need %d)\n",
4761 priv->netdev->name, left, data_len);
4763 memcpy(skb_put(bptr->skb, data_len), data,
4766 bptr->fragnr = fragnr;
4767 if (frame_ctl & IEEE80211_FCTL_MOREFRAGS)
4770 /* this was the last fragment - send it */
4772 bptr->skb = NULL; /* free the entry */
4773 at76_dbg(DBG_RX_FRAGS, "%s: last frag of seq %d",
4774 priv->netdev->name, seqnr);
4778 /* got another sequence number */
4780 /* it's the start of a new chain - replace the
4782 /* bptr->sender has the correct value already */
4783 at76_dbg(DBG_RX_FRAGS,
4784 "%s: start of new seq %d, removing old seq %d",
4785 priv->netdev->name, seqnr, bptr->seqnr);
4786 bptr->seqnr = seqnr;
4788 bptr->last_rx = jiffies;
4789 /* swap bptr->skb and priv->rx_skb */
4791 bptr->skb = priv->rx_skb;
4794 /* it from the middle of a new chain ->
4795 delete the old entry and skip the new one */
4796 at76_dbg(DBG_RX_FRAGS,
4797 "%s: middle of new seq %d (%d) "
4798 "removing old seq %d",
4799 priv->netdev->name, seqnr, fragnr,
4801 dev_kfree_skb(bptr->skb);
4807 /* if we didn't find a chain for the sender address, optr
4808 points either to the first free or the oldest entry */
4811 /* this is not the begin of a fragment chain ... */
4812 at76_dbg(DBG_RX_FRAGS,
4813 "%s: no chain for non-first fragment (%d)",
4814 priv->netdev->name, fragnr);
4820 /* swap the skb's */
4822 optr->skb = priv->rx_skb;
4825 at76_dbg(DBG_RX_FRAGS,
4826 "%s: free old contents: sender %s seq/frag %d/%d",
4827 priv->netdev->name, mac2str(optr->sender),
4828 optr->seqnr, optr->fragnr);
4831 /* take the skb from priv->rx_skb */
4832 optr->skb = priv->rx_skb;
4833 /* let at76_submit_rx_urb() allocate a new skb */
4834 priv->rx_skb = NULL;
4836 at76_dbg(DBG_RX_FRAGS, "%s: use a free entry",
4837 priv->netdev->name);
4839 memcpy(optr->sender, i802_11_hdr->addr2, ETH_ALEN);
4840 optr->seqnr = seqnr;
4842 optr->last_rx = jiffies;
4847 /* Rx interrupt: we expect the complete data buffer in priv->rx_skb */
4848 static void at76_rx_data(struct at76_priv *priv)
4850 struct net_device *netdev = priv->netdev;
4851 struct net_device_stats *stats = &priv->stats;
4852 struct sk_buff *skb = priv->rx_skb;
4853 struct at76_rx_buffer *buf = (struct at76_rx_buffer *)skb->data;
4854 struct ieee80211_hdr_3addr *i802_11_hdr;
4855 int length = le16_to_cpu(buf->wlength);
4857 at76_dbg(DBG_RX_DATA, "%s received data packet: %s", netdev->name,
4858 hex2str(skb->data, AT76_RX_HDRLEN));
4860 at76_dbg(DBG_RX_DATA_CONTENT, "rx packet: %s",
4861 hex2str(skb->data + AT76_RX_HDRLEN, length));
4863 skb = at76_check_for_rx_frags(priv);
4867 /* Atmel header and the FCS are already removed */
4868 i802_11_hdr = (struct ieee80211_hdr_3addr *)skb->data;
4871 skb->ip_summed = CHECKSUM_NONE; /* TODO: should check CRC */
4873 if (is_broadcast_ether_addr(i802_11_hdr->addr1)) {
4874 if (!compare_ether_addr(i802_11_hdr->addr1, netdev->broadcast))
4875 skb->pkt_type = PACKET_BROADCAST;
4877 skb->pkt_type = PACKET_MULTICAST;
4878 } else if (compare_ether_addr(i802_11_hdr->addr1, netdev->dev_addr))
4879 skb->pkt_type = PACKET_OTHERHOST;
4881 at76_ieee80211_to_eth(skb, priv->iw_mode);
4883 netdev->last_rx = jiffies;
4885 stats->rx_packets++;
4886 stats->rx_bytes += length;
4891 static void at76_rx_monitor_mode(struct at76_priv *priv)
4893 struct at76_rx_radiotap *rt;
4896 struct net_device *netdev = priv->netdev;
4897 struct at76_rx_buffer *buf =
4898 (struct at76_rx_buffer *)priv->rx_skb->data;
4899 /* length including the IEEE802.11 header and the trailing FCS,
4900 but not at76_rx_buffer */
4901 int length = le16_to_cpu(buf->wlength);
4902 struct sk_buff *skb = priv->rx_skb;
4903 struct net_device_stats *stats = &priv->stats;
4905 if (length < IEEE80211_FCS_LEN) {
4906 /* buffer contains no data */
4907 at76_dbg(DBG_MONITOR_MODE,
4908 "%s: MONITOR MODE: rx skb without data",
4909 priv->netdev->name);
4913 skblen = sizeof(struct at76_rx_radiotap) + length;
4915 skb = dev_alloc_skb(skblen);
4917 printk(KERN_ERR "%s: MONITOR MODE: dev_alloc_skb for radiotap "
4918 "header returned NULL\n", priv->netdev->name);
4922 skb_put(skb, skblen);
4924 rt = (struct at76_rx_radiotap *)skb->data;
4925 payload = skb->data + sizeof(struct at76_rx_radiotap);
4927 rt->rt_hdr.it_version = 0;
4928 rt->rt_hdr.it_pad = 0;
4929 rt->rt_hdr.it_len = cpu_to_le16(sizeof(struct at76_rx_radiotap));
4930 rt->rt_hdr.it_present = cpu_to_le32(AT76_RX_RADIOTAP_PRESENT);
4932 rt->rt_tsft = cpu_to_le64(le32_to_cpu(buf->rx_time));
4933 rt->rt_rate = hw_rates[buf->rx_rate] & (~0x80);
4934 rt->rt_signal = buf->rssi;
4935 rt->rt_noise = buf->noise_level;
4936 rt->rt_flags = IEEE80211_RADIOTAP_F_FCS;
4937 if (buf->fragmentation)
4938 rt->rt_flags |= IEEE80211_RADIOTAP_F_FRAG;
4940 memcpy(payload, buf->packet, length);
4942 skb->ip_summed = CHECKSUM_NONE;
4943 skb_reset_mac_header(skb);
4944 skb->pkt_type = PACKET_OTHERHOST;
4945 skb->protocol = htons(ETH_P_802_2);
4947 netdev->last_rx = jiffies;
4949 stats->rx_packets++;
4950 stats->rx_bytes += length;
4953 /* Check if we spy on the sender address in buf and update stats */
4954 static void at76_iwspy_update(struct at76_priv *priv,
4955 struct at76_rx_buffer *buf)
4957 struct ieee80211_hdr_3addr *hdr =
4958 (struct ieee80211_hdr_3addr *)buf->packet;
4959 struct iw_quality qual;
4961 /* We can only set the level here */
4962 qual.updated = IW_QUAL_QUAL_INVALID | IW_QUAL_NOISE_INVALID;
4965 at76_calc_level(priv, buf, &qual);
4967 spin_lock_bh(&priv->spy_spinlock);
4969 if (priv->spy_data.spy_number > 0)
4970 wireless_spy_update(priv->netdev, hdr->addr2, &qual);
4972 spin_unlock_bh(&priv->spy_spinlock);
4975 static void at76_rx_tasklet(unsigned long param)
4977 struct urb *urb = (struct urb *)param;
4978 struct at76_priv *priv = urb->context;
4979 struct net_device *netdev = priv->netdev;
4980 struct at76_rx_buffer *buf;
4981 struct ieee80211_hdr_3addr *i802_11_hdr;
4984 if (priv->device_unplugged) {
4985 at76_dbg(DBG_DEVSTART, "device unplugged");
4987 at76_dbg(DBG_DEVSTART, "urb status %d", urb->status);
4991 if (!priv->rx_skb || !netdev || !priv->rx_skb->data)
4994 buf = (struct at76_rx_buffer *)priv->rx_skb->data;
4996 i802_11_hdr = (struct ieee80211_hdr_3addr *)buf->packet;
4998 frame_ctl = le16_to_cpu(i802_11_hdr->frame_ctl);
5000 if (urb->status != 0) {
5001 if (urb->status != -ENOENT && urb->status != -ECONNRESET)
5003 "%s %s: - nonzero Rx bulk status received: %d",
5004 __func__, netdev->name, urb->status);
5008 at76_dbg(DBG_RX_ATMEL_HDR,
5009 "%s: rx frame: rate %d rssi %d noise %d link %d %s",
5010 priv->netdev->name, buf->rx_rate, buf->rssi, buf->noise_level,
5011 buf->link_quality, hex2str(i802_11_hdr, 48));
5012 if (priv->iw_mode == IW_MODE_MONITOR) {
5013 at76_rx_monitor_mode(priv);
5017 /* there is a new bssid around, accept it: */
5018 if (buf->newbss && priv->iw_mode == IW_MODE_ADHOC) {
5019 at76_dbg(DBG_PROGRESS, "%s: rx newbss", netdev->name);
5020 schedule_work(&priv->work_new_bss);
5023 switch (frame_ctl & IEEE80211_FCTL_FTYPE) {
5024 case IEEE80211_FTYPE_DATA:
5028 case IEEE80211_FTYPE_MGMT:
5029 /* jal: TODO: find out if we can update iwspy also on
5030 other frames than management (might depend on the
5031 radio chip / firmware version !) */
5033 at76_iwspy_update(priv, buf);
5035 at76_rx_mgmt(priv, buf);
5038 case IEEE80211_FTYPE_CTL:
5039 at76_dbg(DBG_RX_CTRL, "%s: ignored ctrl frame: %04x",
5040 priv->netdev->name, frame_ctl);
5044 printk(KERN_DEBUG "%s: ignoring frame with framectl 0x%04x\n",
5045 priv->netdev->name, frame_ctl);
5048 at76_submit_rx_urb(priv);
5051 /* Load firmware into kernel memory and parse it */
5052 static struct fwentry *at76_load_firmware(struct usb_device *udev,
5053 enum board_type board_type)
5057 struct at76_fw_header *fwh;
5058 struct fwentry *fwe = &firmwares[board_type];
5060 mutex_lock(&fw_mutex);
5063 at76_dbg(DBG_FW, "re-using previously loaded fw");
5067 at76_dbg(DBG_FW, "downloading firmware %s", fwe->fwname);
5068 ret = request_firmware(&fwe->fw, fwe->fwname, &udev->dev);
5070 dev_printk(KERN_ERR, &udev->dev, "firmware %s not found!\n",
5072 dev_printk(KERN_ERR, &udev->dev,
5073 "you may need to download the firmware from "
5074 "http://developer.berlios.de/projects/at76c503a/");
5078 at76_dbg(DBG_FW, "got it.");
5079 fwh = (struct at76_fw_header *)(fwe->fw->data);
5081 if (fwe->fw->size <= sizeof(*fwh)) {
5082 dev_printk(KERN_ERR, &udev->dev,
5083 "firmware is too short (0x%zx)\n", fwe->fw->size);
5087 /* CRC currently not checked */
5088 fwe->board_type = le32_to_cpu(fwh->board_type);
5089 if (fwe->board_type != board_type) {
5090 dev_printk(KERN_ERR, &udev->dev,
5091 "board type mismatch, requested %u, got %u\n",
5092 board_type, fwe->board_type);
5096 fwe->fw_version.major = fwh->major;
5097 fwe->fw_version.minor = fwh->minor;
5098 fwe->fw_version.patch = fwh->patch;
5099 fwe->fw_version.build = fwh->build;
5101 str = (char *)fwh + le32_to_cpu(fwh->str_offset);
5102 fwe->intfw = (u8 *)fwh + le32_to_cpu(fwh->int_fw_offset);
5103 fwe->intfw_size = le32_to_cpu(fwh->int_fw_len);
5104 fwe->extfw = (u8 *)fwh + le32_to_cpu(fwh->ext_fw_offset);
5105 fwe->extfw_size = le32_to_cpu(fwh->ext_fw_len);
5109 dev_printk(KERN_DEBUG, &udev->dev,
5110 "using firmware %s (version %d.%d.%d-%d)\n",
5111 fwe->fwname, fwh->major, fwh->minor, fwh->patch, fwh->build);
5113 at76_dbg(DBG_DEVSTART, "board %u, int %d:%d, ext %d:%d", board_type,
5114 le32_to_cpu(fwh->int_fw_offset), le32_to_cpu(fwh->int_fw_len),
5115 le32_to_cpu(fwh->ext_fw_offset), le32_to_cpu(fwh->ext_fw_len));
5116 at76_dbg(DBG_DEVSTART, "firmware id %s", str);
5119 mutex_unlock(&fw_mutex);
5127 /* Allocate network device and initialize private data */
5128 static struct at76_priv *at76_alloc_new_device(struct usb_device *udev)
5130 struct net_device *netdev;
5131 struct at76_priv *priv;
5134 /* allocate memory for our device state and initialize it */
5135 netdev = alloc_etherdev(sizeof(struct at76_priv));
5137 dev_printk(KERN_ERR, &udev->dev, "out of memory\n");
5141 priv = netdev_priv(netdev);
5144 priv->netdev = netdev;
5146 mutex_init(&priv->mtx);
5147 INIT_WORK(&priv->work_assoc_done, at76_work_assoc_done);
5148 INIT_WORK(&priv->work_join, at76_work_join);
5149 INIT_WORK(&priv->work_new_bss, at76_work_new_bss);
5150 INIT_WORK(&priv->work_start_scan, at76_work_start_scan);
5151 INIT_WORK(&priv->work_set_promisc, at76_work_set_promisc);
5152 INIT_WORK(&priv->work_submit_rx, at76_work_submit_rx);
5153 INIT_DELAYED_WORK(&priv->dwork_restart, at76_dwork_restart);
5154 INIT_DELAYED_WORK(&priv->dwork_get_scan, at76_dwork_get_scan);
5155 INIT_DELAYED_WORK(&priv->dwork_beacon, at76_dwork_beacon);
5156 INIT_DELAYED_WORK(&priv->dwork_auth, at76_dwork_auth);
5157 INIT_DELAYED_WORK(&priv->dwork_assoc, at76_dwork_assoc);
5159 spin_lock_init(&priv->mgmt_spinlock);
5160 priv->next_mgmt_bulk = NULL;
5161 priv->mac_state = MAC_INIT;
5163 /* initialize empty BSS list */
5164 priv->curr_bss = NULL;
5165 INIT_LIST_HEAD(&priv->bss_list);
5166 spin_lock_init(&priv->bss_list_spinlock);
5168 init_timer(&priv->bss_list_timer);
5169 priv->bss_list_timer.data = (unsigned long)priv;
5170 priv->bss_list_timer.function = at76_bss_list_timeout;
5172 spin_lock_init(&priv->spy_spinlock);
5174 /* mark all rx data entries as unused */
5175 for (i = 0; i < NR_RX_DATA_BUF; i++)
5176 priv->rx_data[i].skb = NULL;
5178 priv->rx_tasklet.func = at76_rx_tasklet;
5179 priv->rx_tasklet.data = 0;
5181 priv->pm_mode = AT76_PM_OFF;
5182 priv->pm_period = 0;
5187 static int at76_alloc_urbs(struct at76_priv *priv,
5188 struct usb_interface *interface)
5190 struct usb_endpoint_descriptor *endpoint, *ep_in, *ep_out;
5193 struct usb_host_interface *iface_desc;
5195 at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
5197 at76_dbg(DBG_URB, "%s: NumEndpoints %d ", __func__,
5198 interface->altsetting[0].desc.bNumEndpoints);
5202 iface_desc = interface->cur_altsetting;
5203 for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
5204 endpoint = &iface_desc->endpoint[i].desc;
5206 at76_dbg(DBG_URB, "%s: %d. endpoint: addr 0x%x attr 0x%x",
5207 __func__, i, endpoint->bEndpointAddress,
5208 endpoint->bmAttributes);
5210 if (!ep_in && usb_endpoint_is_bulk_in(endpoint))
5213 if (!ep_out && usb_endpoint_is_bulk_out(endpoint))
5217 if (!ep_in || !ep_out) {
5218 dev_printk(KERN_ERR, &interface->dev,
5219 "bulk endpoints missing\n");
5223 priv->rx_pipe = usb_rcvbulkpipe(priv->udev, ep_in->bEndpointAddress);
5224 priv->tx_pipe = usb_sndbulkpipe(priv->udev, ep_out->bEndpointAddress);
5226 priv->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
5227 priv->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
5228 if (!priv->rx_urb || !priv->tx_urb) {
5229 dev_printk(KERN_ERR, &interface->dev, "cannot allocate URB\n");
5233 buffer_size = sizeof(struct at76_tx_buffer) + MAX_PADDING_SIZE;
5234 priv->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL);
5235 if (!priv->bulk_out_buffer) {
5236 dev_printk(KERN_ERR, &interface->dev,
5237 "cannot allocate output buffer\n");
5241 at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
5246 /* Register network device and initialize the hardware */
5247 static int at76_init_new_device(struct at76_priv *priv,
5248 struct usb_interface *interface)
5250 struct net_device *netdev = priv->netdev;
5253 /* set up the endpoint information */
5254 /* check out the endpoints */
5256 at76_dbg(DBG_DEVSTART, "USB interface: %d endpoints",
5257 interface->cur_altsetting->desc.bNumEndpoints);
5259 ret = at76_alloc_urbs(priv, interface);
5264 ret = at76_get_hw_config(priv);
5266 dev_printk(KERN_ERR, &interface->dev,
5267 "cannot get MAC address\n");
5271 priv->domain = at76_get_reg_domain(priv->regulatory_domain);
5272 /* init. netdev->dev_addr */
5273 memcpy(netdev->dev_addr, priv->mac_addr, ETH_ALEN);
5275 priv->channel = DEF_CHANNEL;
5276 priv->iw_mode = IW_MODE_INFRA;
5277 priv->rts_threshold = DEF_RTS_THRESHOLD;
5278 priv->frag_threshold = DEF_FRAG_THRESHOLD;
5279 priv->short_retry_limit = DEF_SHORT_RETRY_LIMIT;
5280 priv->txrate = TX_RATE_AUTO;
5281 priv->preamble_type = PREAMBLE_TYPE_LONG;
5282 priv->beacon_period = 100;
5283 priv->beacons_last_qual = jiffies;
5284 priv->auth_mode = WLAN_AUTH_OPEN;
5285 priv->scan_min_time = DEF_SCAN_MIN_TIME;
5286 priv->scan_max_time = DEF_SCAN_MAX_TIME;
5287 priv->scan_mode = SCAN_TYPE_ACTIVE;
5289 netdev->flags &= ~IFF_MULTICAST; /* not yet or never */
5290 netdev->open = at76_open;
5291 netdev->stop = at76_stop;
5292 netdev->get_stats = at76_get_stats;
5293 netdev->ethtool_ops = &at76_ethtool_ops;
5295 /* Add pointers to enable iwspy support. */
5296 priv->wireless_data.spy_data = &priv->spy_data;
5297 netdev->wireless_data = &priv->wireless_data;
5299 netdev->hard_start_xmit = at76_tx;
5300 netdev->tx_timeout = at76_tx_timeout;
5301 netdev->watchdog_timeo = 2 * HZ;
5302 netdev->wireless_handlers = &at76_handler_def;
5303 netdev->set_multicast_list = at76_set_multicast;
5304 netdev->set_mac_address = at76_set_mac_address;
5305 dev_alloc_name(netdev, "wlan%d");
5307 ret = register_netdev(priv->netdev);
5309 dev_printk(KERN_ERR, &interface->dev,
5310 "cannot register netdevice (status %d)!\n", ret);
5313 priv->netdev_registered = 1;
5315 printk(KERN_INFO "%s: USB %s, MAC %s, firmware %d.%d.%d-%d\n",
5316 netdev->name, interface->dev.bus_id, mac2str(priv->mac_addr),
5317 priv->fw_version.major, priv->fw_version.minor,
5318 priv->fw_version.patch, priv->fw_version.build);
5319 printk(KERN_INFO "%s: regulatory domain 0x%02x: %s\n", netdev->name,
5320 priv->regulatory_domain, priv->domain->name);
5322 /* we let this timer run the whole time this driver instance lives */
5323 mod_timer(&priv->bss_list_timer, jiffies + BSS_LIST_TIMEOUT);
5329 static void at76_delete_device(struct at76_priv *priv)
5333 at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
5335 /* The device is gone, don't bother turning it off */
5336 priv->device_unplugged = 1;
5338 if (priv->netdev_registered)
5339 unregister_netdev(priv->netdev);
5341 /* assuming we used keventd, it must quiesce too */
5342 flush_scheduled_work();
5344 kfree(priv->bulk_out_buffer);
5347 usb_kill_urb(priv->tx_urb);
5348 usb_free_urb(priv->tx_urb);
5351 usb_kill_urb(priv->rx_urb);
5352 usb_free_urb(priv->rx_urb);
5355 at76_dbg(DBG_PROC_ENTRY, "%s: unlinked urbs", __func__);
5358 kfree_skb(priv->rx_skb);
5360 at76_free_bss_list(priv);
5361 del_timer_sync(&priv->bss_list_timer);
5362 cancel_delayed_work(&priv->dwork_get_scan);
5363 cancel_delayed_work(&priv->dwork_beacon);
5364 cancel_delayed_work(&priv->dwork_auth);
5365 cancel_delayed_work(&priv->dwork_assoc);
5367 if (priv->mac_state == MAC_CONNECTED)
5368 at76_iwevent_bss_disconnect(priv->netdev);
5370 for (i = 0; i < NR_RX_DATA_BUF; i++)
5371 if (priv->rx_data[i].skb) {
5372 dev_kfree_skb(priv->rx_data[i].skb);
5373 priv->rx_data[i].skb = NULL;
5375 usb_put_dev(priv->udev);
5377 at76_dbg(DBG_PROC_ENTRY, "%s: before freeing priv/netdev", __func__);
5378 free_netdev(priv->netdev); /* priv is in netdev */
5380 at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
5383 static int at76_probe(struct usb_interface *interface,
5384 const struct usb_device_id *id)
5387 struct at76_priv *priv;
5388 struct fwentry *fwe;
5389 struct usb_device *udev;
5391 int need_ext_fw = 0;
5392 struct mib_fw_version fwv;
5393 int board_type = (int)id->driver_info;
5395 udev = usb_get_dev(interface_to_usbdev(interface));
5397 /* Load firmware into kernel memory */
5398 fwe = at76_load_firmware(udev, board_type);
5404 op_mode = at76_get_op_mode(udev);
5406 at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
5408 /* we get OPMODE_NONE with 2.4.23, SMC2662W-AR ???
5409 we get 204 with 2.4.23, Fiberline FL-WL240u (505A+RFMD2958) ??? */
5411 if (op_mode == OPMODE_HW_CONFIG_MODE) {
5412 dev_printk(KERN_ERR, &interface->dev,
5413 "cannot handle a device in HW_CONFIG_MODE\n");
5418 if (op_mode != OPMODE_NORMAL_NIC_WITH_FLASH
5419 && op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
5420 /* download internal firmware part */
5421 dev_printk(KERN_DEBUG, &interface->dev,
5422 "downloading internal firmware\n");
5423 ret = at76_load_internal_fw(udev, fwe);
5425 dev_printk(KERN_ERR, &interface->dev,
5426 "error %d downloading internal firmware\n",
5434 /* Internal firmware already inside the device. Get firmware
5435 * version to test if external firmware is loaded.
5436 * This works only for newer firmware, e.g. the Intersil 0.90.x
5437 * says "control timeout on ep0in" and subsequent
5438 * at76_get_op_mode() fail too :-( */
5440 /* if version >= 0.100.x.y or device with built-in flash we can
5441 * query the device for the fw version */
5442 if ((fwe->fw_version.major > 0 || fwe->fw_version.minor >= 100)
5443 || (op_mode == OPMODE_NORMAL_NIC_WITH_FLASH)) {
5444 ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv));
5445 if (ret < 0 || (fwv.major | fwv.minor) == 0)
5448 /* No way to check firmware version, reload to be sure */
5452 dev_printk(KERN_DEBUG, &interface->dev,
5453 "downloading external firmware\n");
5455 ret = at76_load_external_fw(udev, fwe);
5459 /* Re-check firmware version */
5460 ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv));
5462 dev_printk(KERN_ERR, &interface->dev,
5463 "error %d getting firmware version\n", ret);
5468 priv = at76_alloc_new_device(udev);
5474 SET_NETDEV_DEV(priv->netdev, &interface->dev);
5475 usb_set_intfdata(interface, priv);
5477 memcpy(&priv->fw_version, &fwv, sizeof(struct mib_fw_version));
5478 priv->board_type = board_type;
5480 ret = at76_init_new_device(priv, interface);
5482 at76_delete_device(priv);
5491 static void at76_disconnect(struct usb_interface *interface)
5493 struct at76_priv *priv;
5495 priv = usb_get_intfdata(interface);
5496 usb_set_intfdata(interface, NULL);
5498 /* Disconnect after loading internal firmware */
5502 printk(KERN_INFO "%s: disconnecting\n", priv->netdev->name);
5503 at76_delete_device(priv);
5504 dev_printk(KERN_INFO, &interface->dev, "disconnected\n");
5507 /* Structure for registering this driver with the USB subsystem */
5508 static struct usb_driver at76_driver = {
5509 .name = DRIVER_NAME,
5510 .probe = at76_probe,
5511 .disconnect = at76_disconnect,
5512 .id_table = dev_table,
5515 static int __init at76_mod_init(void)
5519 printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " loading\n");
5521 mutex_init(&fw_mutex);
5523 /* register this driver with the USB subsystem */
5524 result = usb_register(&at76_driver);
5526 printk(KERN_ERR DRIVER_NAME
5527 ": usb_register failed (status %d)\n", result);
5529 led_trigger_register_simple("at76_usb-tx", &ledtrig_tx);
5533 static void __exit at76_mod_exit(void)
5537 printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " unloading\n");
5538 usb_deregister(&at76_driver);
5539 for (i = 0; i < ARRAY_SIZE(firmwares); i++) {
5540 if (firmwares[i].fw)
5541 release_firmware(firmwares[i].fw);
5543 led_trigger_unregister_simple(ledtrig_tx);
5546 module_param_named(debug, at76_debug, int, 0600);
5547 MODULE_PARM_DESC(debug, "Debugging level");
5549 module_init(at76_mod_init);
5550 module_exit(at76_mod_exit);
5552 MODULE_AUTHOR("Oliver Kurth <oku@masqmail.cx>");
5553 MODULE_AUTHOR("Joerg Albert <joerg.albert@gmx.de>");
5554 MODULE_AUTHOR("Alex <alex@foogod.com>");
5555 MODULE_AUTHOR("Nick Jones");
5556 MODULE_AUTHOR("Balint Seeber <n0_5p4m_p13453@hotmail.com>");
5557 MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>");
5558 MODULE_DESCRIPTION(DRIVER_DESC);
5559 MODULE_LICENSE("GPL");