| /* |
| * at76c503/at76c505 USB driver |
| * |
| * Copyright (c) 2002 - 2003 Oliver Kurth |
| * Copyright (c) 2004 Joerg Albert <joerg.albert@gmx.de> |
| * Copyright (c) 2004 Nick Jones |
| * Copyright (c) 2004 Balint Seeber <n0_5p4m_p13453@hotmail.com> |
| * Copyright (c) 2007 Guido Guenther <agx@sigxcpu.org> |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; either version 2 of |
| * the License, or (at your option) any later version. |
| * |
| * This file is part of the Berlios driver for WLAN USB devices based on the |
| * Atmel AT76C503A/505/505A. |
| * |
| * Some iw_handler code was taken from airo.c, (C) 1999 Benjamin Reed |
| */ |
| |
| #include <linux/init.h> |
| #include <linux/kernel.h> |
| #include <linux/sched.h> |
| #include <linux/errno.h> |
| #include <linux/slab.h> |
| #include <linux/module.h> |
| #include <linux/spinlock.h> |
| #include <linux/list.h> |
| #include <linux/usb.h> |
| #include <linux/netdevice.h> |
| #include <linux/if_arp.h> |
| #include <linux/etherdevice.h> |
| #include <linux/ethtool.h> |
| #include <linux/wireless.h> |
| #include <net/iw_handler.h> |
| #include <net/ieee80211_radiotap.h> |
| #include <linux/firmware.h> |
| #include <linux/leds.h> |
| #include <net/ieee80211.h> |
| |
| #include "at76_usb.h" |
| |
| /* Version information */ |
| #define DRIVER_NAME "at76_usb" |
| #define DRIVER_VERSION "0.17" |
| #define DRIVER_DESC "Atmel at76x USB Wireless LAN Driver" |
| |
| /* at76_debug bits */ |
| #define DBG_PROGRESS 0x00000001 /* authentication/accociation */ |
| #define DBG_BSS_TABLE 0x00000002 /* show BSS table after scans */ |
| #define DBG_IOCTL 0x00000004 /* ioctl calls / settings */ |
| #define DBG_MAC_STATE 0x00000008 /* MAC state transitions */ |
| #define DBG_TX_DATA 0x00000010 /* tx header */ |
| #define DBG_TX_DATA_CONTENT 0x00000020 /* tx content */ |
| #define DBG_TX_MGMT 0x00000040 /* tx management */ |
| #define DBG_RX_DATA 0x00000080 /* rx data header */ |
| #define DBG_RX_DATA_CONTENT 0x00000100 /* rx data content */ |
| #define DBG_RX_MGMT 0x00000200 /* rx mgmt frame headers */ |
| #define DBG_RX_BEACON 0x00000400 /* rx beacon */ |
| #define DBG_RX_CTRL 0x00000800 /* rx control */ |
| #define DBG_RX_MGMT_CONTENT 0x00001000 /* rx mgmt content */ |
| #define DBG_RX_FRAGS 0x00002000 /* rx data fragment handling */ |
| #define DBG_DEVSTART 0x00004000 /* fw download, device start */ |
| #define DBG_URB 0x00008000 /* rx urb status, ... */ |
| #define DBG_RX_ATMEL_HDR 0x00010000 /* Atmel-specific Rx headers */ |
| #define DBG_PROC_ENTRY 0x00020000 /* procedure entries/exits */ |
| #define DBG_PM 0x00040000 /* power management settings */ |
| #define DBG_BSS_MATCH 0x00080000 /* BSS match failures */ |
| #define DBG_PARAMS 0x00100000 /* show configured parameters */ |
| #define DBG_WAIT_COMPLETE 0x00200000 /* command completion */ |
| #define DBG_RX_FRAGS_SKB 0x00400000 /* skb header of Rx fragments */ |
| #define DBG_BSS_TABLE_RM 0x00800000 /* purging bss table entries */ |
| #define DBG_MONITOR_MODE 0x01000000 /* monitor mode */ |
| #define DBG_MIB 0x02000000 /* dump all MIBs on startup */ |
| #define DBG_MGMT_TIMER 0x04000000 /* dump mgmt_timer ops */ |
| #define DBG_WE_EVENTS 0x08000000 /* dump wireless events */ |
| #define DBG_FW 0x10000000 /* firmware download */ |
| #define DBG_DFU 0x20000000 /* device firmware upgrade */ |
| |
| #define DBG_DEFAULTS 0 |
| |
| /* Use our own dbg macro */ |
| #define at76_dbg(bits, format, arg...) \ |
| do { \ |
| if (at76_debug & (bits)) \ |
| printk(KERN_DEBUG DRIVER_NAME ": " format "\n" , ## arg); \ |
| } while (0) |
| |
| static int at76_debug = DBG_DEFAULTS; |
| |
| /* Protect against concurrent firmware loading and parsing */ |
| static struct mutex fw_mutex; |
| |
| static struct fwentry firmwares[] = { |
| [0] = {""}, |
| [BOARD_503_ISL3861] = {"atmel_at76c503-i3861.bin"}, |
| [BOARD_503_ISL3863] = {"atmel_at76c503-i3863.bin"}, |
| [BOARD_503] = {"atmel_at76c503-rfmd.bin"}, |
| [BOARD_503_ACC] = {"atmel_at76c503-rfmd-acc.bin"}, |
| [BOARD_505] = {"atmel_at76c505-rfmd.bin"}, |
| [BOARD_505_2958] = {"atmel_at76c505-rfmd2958.bin"}, |
| [BOARD_505A] = {"atmel_at76c505a-rfmd2958.bin"}, |
| [BOARD_505AMX] = {"atmel_at76c505amx-rfmd.bin"}, |
| }; |
| |
| #define USB_DEVICE_DATA(__ops) .driver_info = (kernel_ulong_t)(__ops) |
| |
| static struct usb_device_id dev_table[] = { |
| /* |
| * at76c503-i3861 |
| */ |
| /* Generic AT76C503/3861 device */ |
| {USB_DEVICE(0x03eb, 0x7603), USB_DEVICE_DATA(BOARD_503_ISL3861)}, |
| /* Linksys WUSB11 v2.1/v2.6 */ |
| {USB_DEVICE(0x066b, 0x2211), USB_DEVICE_DATA(BOARD_503_ISL3861)}, |
| /* Netgear MA101 rev. A */ |
| {USB_DEVICE(0x0864, 0x4100), USB_DEVICE_DATA(BOARD_503_ISL3861)}, |
| /* Tekram U300C / Allnet ALL0193 */ |
| {USB_DEVICE(0x0b3b, 0x1612), USB_DEVICE_DATA(BOARD_503_ISL3861)}, |
| /* HP HN210W J7801A */ |
| {USB_DEVICE(0x03f0, 0x011c), USB_DEVICE_DATA(BOARD_503_ISL3861)}, |
| /* Sitecom/Z-Com/Zyxel M4Y-750 */ |
| {USB_DEVICE(0x0cde, 0x0001), USB_DEVICE_DATA(BOARD_503_ISL3861)}, |
| /* Dynalink/Askey WLL013 (intersil) */ |
| {USB_DEVICE(0x069a, 0x0320), USB_DEVICE_DATA(BOARD_503_ISL3861)}, |
| /* EZ connect 11Mpbs Wireless USB Adapter SMC2662W v1 */ |
| {USB_DEVICE(0x0d5c, 0xa001), USB_DEVICE_DATA(BOARD_503_ISL3861)}, |
| /* BenQ AWL300 */ |
| {USB_DEVICE(0x04a5, 0x9000), USB_DEVICE_DATA(BOARD_503_ISL3861)}, |
| /* Addtron AWU-120, Compex WLU11 */ |
| {USB_DEVICE(0x05dd, 0xff31), USB_DEVICE_DATA(BOARD_503_ISL3861)}, |
| /* Intel AP310 AnyPoint II USB */ |
| {USB_DEVICE(0x8086, 0x0200), USB_DEVICE_DATA(BOARD_503_ISL3861)}, |
| /* Dynalink L11U */ |
| {USB_DEVICE(0x0d8e, 0x7100), USB_DEVICE_DATA(BOARD_503_ISL3861)}, |
| /* Arescom WL-210, FCC id 07J-GL2411USB */ |
| {USB_DEVICE(0x0d8e, 0x7110), USB_DEVICE_DATA(BOARD_503_ISL3861)}, |
| /* I-O DATA WN-B11/USB */ |
| {USB_DEVICE(0x04bb, 0x0919), USB_DEVICE_DATA(BOARD_503_ISL3861)}, |
| /* BT Voyager 1010 */ |
| {USB_DEVICE(0x069a, 0x0821), USB_DEVICE_DATA(BOARD_503_ISL3861)}, |
| /* |
| * at76c503-i3863 |
| */ |
| /* Generic AT76C503/3863 device */ |
| {USB_DEVICE(0x03eb, 0x7604), USB_DEVICE_DATA(BOARD_503_ISL3863)}, |
| /* Samsung SWL-2100U */ |
| {USB_DEVICE(0x055d, 0xa000), USB_DEVICE_DATA(BOARD_503_ISL3863)}, |
| /* |
| * at76c503-rfmd |
| */ |
| /* Generic AT76C503/RFMD device */ |
| {USB_DEVICE(0x03eb, 0x7605), USB_DEVICE_DATA(BOARD_503)}, |
| /* Dynalink/Askey WLL013 (rfmd) */ |
| {USB_DEVICE(0x069a, 0x0321), USB_DEVICE_DATA(BOARD_503)}, |
| /* Linksys WUSB11 v2.6 */ |
| {USB_DEVICE(0x077b, 0x2219), USB_DEVICE_DATA(BOARD_503)}, |
| /* Network Everywhere NWU11B */ |
| {USB_DEVICE(0x077b, 0x2227), USB_DEVICE_DATA(BOARD_503)}, |
| /* Netgear MA101 rev. B */ |
| {USB_DEVICE(0x0864, 0x4102), USB_DEVICE_DATA(BOARD_503)}, |
| /* D-Link DWL-120 rev. E */ |
| {USB_DEVICE(0x2001, 0x3200), USB_DEVICE_DATA(BOARD_503)}, |
| /* Actiontec 802UAT1, HWU01150-01UK */ |
| {USB_DEVICE(0x1668, 0x7605), USB_DEVICE_DATA(BOARD_503)}, |
| /* AirVast W-Buddie WN210 */ |
| {USB_DEVICE(0x03eb, 0x4102), USB_DEVICE_DATA(BOARD_503)}, |
| /* Dick Smith Electronics XH1153 802.11b USB adapter */ |
| {USB_DEVICE(0x1371, 0x5743), USB_DEVICE_DATA(BOARD_503)}, |
| /* CNet CNUSB611 */ |
| {USB_DEVICE(0x1371, 0x0001), USB_DEVICE_DATA(BOARD_503)}, |
| /* FiberLine FL-WL200U */ |
| {USB_DEVICE(0x1371, 0x0002), USB_DEVICE_DATA(BOARD_503)}, |
| /* BenQ AWL400 USB stick */ |
| {USB_DEVICE(0x04a5, 0x9001), USB_DEVICE_DATA(BOARD_503)}, |
| /* 3Com 3CRSHEW696 */ |
| {USB_DEVICE(0x0506, 0x0a01), USB_DEVICE_DATA(BOARD_503)}, |
| /* Siemens Santis ADSL WLAN USB adapter WLL 013 */ |
| {USB_DEVICE(0x0681, 0x001b), USB_DEVICE_DATA(BOARD_503)}, |
| /* Belkin F5D6050, version 2 */ |
| {USB_DEVICE(0x050d, 0x0050), USB_DEVICE_DATA(BOARD_503)}, |
| /* iBlitzz, BWU613 (not *B or *SB) */ |
| {USB_DEVICE(0x07b8, 0xb000), USB_DEVICE_DATA(BOARD_503)}, |
| /* Gigabyte GN-WLBM101 */ |
| {USB_DEVICE(0x1044, 0x8003), USB_DEVICE_DATA(BOARD_503)}, |
| /* Planex GW-US11S */ |
| {USB_DEVICE(0x2019, 0x3220), USB_DEVICE_DATA(BOARD_503)}, |
| /* Internal WLAN adapter in h5[4,5]xx series iPAQs */ |
| {USB_DEVICE(0x049f, 0x0032), USB_DEVICE_DATA(BOARD_503)}, |
| /* Corega Wireless LAN USB-11 mini */ |
| {USB_DEVICE(0x07aa, 0x0011), USB_DEVICE_DATA(BOARD_503)}, |
| /* Corega Wireless LAN USB-11 mini2 */ |
| {USB_DEVICE(0x07aa, 0x0018), USB_DEVICE_DATA(BOARD_503)}, |
| /* Uniden PCW100 */ |
| {USB_DEVICE(0x05dd, 0xff35), USB_DEVICE_DATA(BOARD_503)}, |
| /* |
| * at76c503-rfmd-acc |
| */ |
| /* SMC2664W */ |
| {USB_DEVICE(0x083a, 0x3501), USB_DEVICE_DATA(BOARD_503_ACC)}, |
| /* Belkin F5D6050, SMC2662W v2, SMC2662W-AR */ |
| {USB_DEVICE(0x0d5c, 0xa002), USB_DEVICE_DATA(BOARD_503_ACC)}, |
| /* |
| * at76c505-rfmd |
| */ |
| /* Generic AT76C505/RFMD */ |
| {USB_DEVICE(0x03eb, 0x7606), USB_DEVICE_DATA(BOARD_505)}, |
| /* |
| * at76c505-rfmd2958 |
| */ |
| /* Generic AT76C505/RFMD, OvisLink WL-1130USB */ |
| {USB_DEVICE(0x03eb, 0x7613), USB_DEVICE_DATA(BOARD_505_2958)}, |
| /* Fiberline FL-WL240U */ |
| {USB_DEVICE(0x1371, 0x0014), USB_DEVICE_DATA(BOARD_505_2958)}, |
| /* CNet CNUSB-611G */ |
| {USB_DEVICE(0x1371, 0x0013), USB_DEVICE_DATA(BOARD_505_2958)}, |
| /* Linksys WUSB11 v2.8 */ |
| {USB_DEVICE(0x1915, 0x2233), USB_DEVICE_DATA(BOARD_505_2958)}, |
| /* Xterasys XN-2122B, IBlitzz BWU613B/BWU613SB */ |
| {USB_DEVICE(0x12fd, 0x1001), USB_DEVICE_DATA(BOARD_505_2958)}, |
| /* Corega WLAN USB Stick 11 */ |
| {USB_DEVICE(0x07aa, 0x7613), USB_DEVICE_DATA(BOARD_505_2958)}, |
| /* Microstar MSI Box MS6978 */ |
| {USB_DEVICE(0x0db0, 0x1020), USB_DEVICE_DATA(BOARD_505_2958)}, |
| /* |
| * at76c505a-rfmd2958 |
| */ |
| /* Generic AT76C505A device */ |
| {USB_DEVICE(0x03eb, 0x7614), USB_DEVICE_DATA(BOARD_505A)}, |
| /* Generic AT76C505AS device */ |
| {USB_DEVICE(0x03eb, 0x7617), USB_DEVICE_DATA(BOARD_505A)}, |
| /* Siemens Gigaset USB WLAN Adapter 11 */ |
| {USB_DEVICE(0x1690, 0x0701), USB_DEVICE_DATA(BOARD_505A)}, |
| /* OQO Model 01+ Internal Wi-Fi */ |
| {USB_DEVICE(0x1557, 0x0002), USB_DEVICE_DATA(BOARD_505A)}, |
| /* |
| * at76c505amx-rfmd |
| */ |
| /* Generic AT76C505AMX device */ |
| {USB_DEVICE(0x03eb, 0x7615), USB_DEVICE_DATA(BOARD_505AMX)}, |
| {} |
| }; |
| |
| MODULE_DEVICE_TABLE(usb, dev_table); |
| |
| /* Supported rates of this hardware, bit 7 marks basic rates */ |
| static const u8 hw_rates[] = { 0x82, 0x84, 0x0b, 0x16 }; |
| |
| /* Frequency of each channel in MHz */ |
| static const long channel_frequency[] = { |
| 2412, 2417, 2422, 2427, 2432, 2437, 2442, |
| 2447, 2452, 2457, 2462, 2467, 2472, 2484 |
| }; |
| |
| #define NUM_CHANNELS ARRAY_SIZE(channel_frequency) |
| |
| static const char *const preambles[] = { "long", "short", "auto" }; |
| |
| static const char *const mac_states[] = { |
| [MAC_INIT] = "INIT", |
| [MAC_SCANNING] = "SCANNING", |
| [MAC_AUTH] = "AUTH", |
| [MAC_ASSOC] = "ASSOC", |
| [MAC_JOINING] = "JOINING", |
| [MAC_CONNECTED] = "CONNECTED", |
| [MAC_OWN_IBSS] = "OWN_IBSS" |
| }; |
| |
| /* Firmware download */ |
| /* DFU states */ |
| #define STATE_IDLE 0x00 |
| #define STATE_DETACH 0x01 |
| #define STATE_DFU_IDLE 0x02 |
| #define STATE_DFU_DOWNLOAD_SYNC 0x03 |
| #define STATE_DFU_DOWNLOAD_BUSY 0x04 |
| #define STATE_DFU_DOWNLOAD_IDLE 0x05 |
| #define STATE_DFU_MANIFEST_SYNC 0x06 |
| #define STATE_DFU_MANIFEST 0x07 |
| #define STATE_DFU_MANIFEST_WAIT_RESET 0x08 |
| #define STATE_DFU_UPLOAD_IDLE 0x09 |
| #define STATE_DFU_ERROR 0x0a |
| |
| /* DFU commands */ |
| #define DFU_DETACH 0 |
| #define DFU_DNLOAD 1 |
| #define DFU_UPLOAD 2 |
| #define DFU_GETSTATUS 3 |
| #define DFU_CLRSTATUS 4 |
| #define DFU_GETSTATE 5 |
| #define DFU_ABORT 6 |
| |
| #define FW_BLOCK_SIZE 1024 |
| |
| struct dfu_status { |
| unsigned char status; |
| unsigned char poll_timeout[3]; |
| unsigned char state; |
| unsigned char string; |
| } __attribute__((packed)); |
| |
| static inline int at76_is_intersil(enum board_type board) |
| { |
| return (board == BOARD_503_ISL3861 || board == BOARD_503_ISL3863); |
| } |
| |
| static inline int at76_is_503rfmd(enum board_type board) |
| { |
| return (board == BOARD_503 || board == BOARD_503_ACC); |
| } |
| |
| static inline int at76_is_505a(enum board_type board) |
| { |
| return (board == BOARD_505A || board == BOARD_505AMX); |
| } |
| |
| /* Load a block of the first (internal) part of the firmware */ |
| static int at76_load_int_fw_block(struct usb_device *udev, int blockno, |
| void *block, int size) |
| { |
| return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), DFU_DNLOAD, |
| USB_TYPE_CLASS | USB_DIR_OUT | |
| USB_RECIP_INTERFACE, blockno, 0, block, size, |
| USB_CTRL_GET_TIMEOUT); |
| } |
| |
| static int at76_dfu_get_status(struct usb_device *udev, |
| struct dfu_status *status) |
| { |
| int ret; |
| |
| ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATUS, |
| USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE, |
| 0, 0, status, sizeof(struct dfu_status), |
| USB_CTRL_GET_TIMEOUT); |
| return ret; |
| } |
| |
| static u8 at76_dfu_get_state(struct usb_device *udev, u8 *state) |
| { |
| int ret; |
| |
| ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATE, |
| USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE, |
| 0, 0, state, 1, USB_CTRL_GET_TIMEOUT); |
| return ret; |
| } |
| |
| /* Convert timeout from the DFU status to jiffies */ |
| static inline unsigned long at76_get_timeout(struct dfu_status *s) |
| { |
| return msecs_to_jiffies((s->poll_timeout[2] << 16) |
| | (s->poll_timeout[1] << 8) |
| | (s->poll_timeout[0])); |
| } |
| |
| /* Load internal firmware from the buffer. If manifest_sync_timeout > 0, use |
| * its value in jiffies in the MANIFEST_SYNC state. */ |
| static int at76_usbdfu_download(struct usb_device *udev, u8 *buf, u32 size, |
| int manifest_sync_timeout) |
| { |
| u8 *block; |
| struct dfu_status dfu_stat_buf; |
| int ret = 0; |
| int need_dfu_state = 1; |
| int is_done = 0; |
| u8 dfu_state = 0; |
| u32 dfu_timeout = 0; |
| int bsize = 0; |
| int blockno = 0; |
| |
| at76_dbg(DBG_DFU, "%s( %p, %u, %d)", __func__, buf, size, |
| manifest_sync_timeout); |
| |
| if (!size) { |
| dev_printk(KERN_ERR, &udev->dev, "FW buffer length invalid!\n"); |
| return -EINVAL; |
| } |
| |
| block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL); |
| if (!block) |
| return -ENOMEM; |
| |
| do { |
| if (need_dfu_state) { |
| ret = at76_dfu_get_state(udev, &dfu_state); |
| if (ret < 0) { |
| dev_printk(KERN_ERR, &udev->dev, |
| "cannot get DFU state: %d\n", ret); |
| goto exit; |
| } |
| need_dfu_state = 0; |
| } |
| |
| switch (dfu_state) { |
| case STATE_DFU_DOWNLOAD_SYNC: |
| at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_SYNC"); |
| ret = at76_dfu_get_status(udev, &dfu_stat_buf); |
| if (ret >= 0) { |
| dfu_state = dfu_stat_buf.state; |
| dfu_timeout = at76_get_timeout(&dfu_stat_buf); |
| need_dfu_state = 0; |
| } else |
| dev_printk(KERN_ERR, &udev->dev, |
| "at76_dfu_get_status returned %d\n", |
| ret); |
| break; |
| |
| case STATE_DFU_DOWNLOAD_BUSY: |
| at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_BUSY"); |
| need_dfu_state = 1; |
| |
| at76_dbg(DBG_DFU, "DFU: Resetting device"); |
| schedule_timeout_interruptible(dfu_timeout); |
| break; |
| |
| case STATE_DFU_DOWNLOAD_IDLE: |
| at76_dbg(DBG_DFU, "DOWNLOAD..."); |
| /* fall through */ |
| case STATE_DFU_IDLE: |
| at76_dbg(DBG_DFU, "DFU IDLE"); |
| |
| bsize = min_t(int, size, FW_BLOCK_SIZE); |
| memcpy(block, buf, bsize); |
| at76_dbg(DBG_DFU, "int fw, size left = %5d, " |
| "bsize = %4d, blockno = %2d", size, bsize, |
| blockno); |
| ret = |
| at76_load_int_fw_block(udev, blockno, block, bsize); |
| buf += bsize; |
| size -= bsize; |
| blockno++; |
| |
| if (ret != bsize) |
| dev_printk(KERN_ERR, &udev->dev, |
| "at76_load_int_fw_block " |
| "returned %d\n", ret); |
| need_dfu_state = 1; |
| break; |
| |
| case STATE_DFU_MANIFEST_SYNC: |
| at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_SYNC"); |
| |
| ret = at76_dfu_get_status(udev, &dfu_stat_buf); |
| if (ret < 0) |
| break; |
| |
| dfu_state = dfu_stat_buf.state; |
| dfu_timeout = at76_get_timeout(&dfu_stat_buf); |
| need_dfu_state = 0; |
| |
| /* override the timeout from the status response, |
| needed for AT76C505A */ |
| if (manifest_sync_timeout > 0) |
| dfu_timeout = manifest_sync_timeout; |
| |
| at76_dbg(DBG_DFU, "DFU: Waiting for manifest phase"); |
| schedule_timeout_interruptible(dfu_timeout); |
| break; |
| |
| case STATE_DFU_MANIFEST: |
| at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST"); |
| is_done = 1; |
| break; |
| |
| case STATE_DFU_MANIFEST_WAIT_RESET: |
| at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_WAIT_RESET"); |
| is_done = 1; |
| break; |
| |
| case STATE_DFU_UPLOAD_IDLE: |
| at76_dbg(DBG_DFU, "STATE_DFU_UPLOAD_IDLE"); |
| break; |
| |
| case STATE_DFU_ERROR: |
| at76_dbg(DBG_DFU, "STATE_DFU_ERROR"); |
| ret = -EPIPE; |
| break; |
| |
| default: |
| at76_dbg(DBG_DFU, "DFU UNKNOWN STATE (%d)", dfu_state); |
| ret = -EINVAL; |
| break; |
| } |
| } while (!is_done && (ret >= 0)); |
| |
| exit: |
| kfree(block); |
| if (ret >= 0) |
| ret = 0; |
| |
| return ret; |
| } |
| |
| /* Report that the scan results are ready */ |
| static inline void at76_iwevent_scan_complete(struct net_device *netdev) |
| { |
| union iwreq_data wrqu; |
| wrqu.data.length = 0; |
| wrqu.data.flags = 0; |
| wireless_send_event(netdev, SIOCGIWSCAN, &wrqu, NULL); |
| at76_dbg(DBG_WE_EVENTS, "%s: SIOCGIWSCAN sent", netdev->name); |
| } |
| |
| static inline void at76_iwevent_bss_connect(struct net_device *netdev, |
| u8 *bssid) |
| { |
| union iwreq_data wrqu; |
| wrqu.data.length = 0; |
| wrqu.data.flags = 0; |
| memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN); |
| wrqu.ap_addr.sa_family = ARPHRD_ETHER; |
| wireless_send_event(netdev, SIOCGIWAP, &wrqu, NULL); |
| at76_dbg(DBG_WE_EVENTS, "%s: %s: SIOCGIWAP sent", netdev->name, |
| __func__); |
| } |
| |
| static inline void at76_iwevent_bss_disconnect(struct net_device *netdev) |
| { |
| union iwreq_data wrqu; |
| wrqu.data.length = 0; |
| wrqu.data.flags = 0; |
| memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN); |
| wrqu.ap_addr.sa_family = ARPHRD_ETHER; |
| wireless_send_event(netdev, SIOCGIWAP, &wrqu, NULL); |
| at76_dbg(DBG_WE_EVENTS, "%s: %s: SIOCGIWAP sent", netdev->name, |
| __func__); |
| } |
| |
| #define HEX2STR_BUFFERS 4 |
| #define HEX2STR_MAX_LEN 64 |
| #define BIN2HEX(x) ((x) < 10 ? '0' + (x) : (x) + 'A' - 10) |
| |
| /* Convert binary data into hex string */ |
| static char *hex2str(void *buf, int len) |
| { |
| static atomic_t a = ATOMIC_INIT(0); |
| static char bufs[HEX2STR_BUFFERS][3 * HEX2STR_MAX_LEN + 1]; |
| char *ret = bufs[atomic_inc_return(&a) & (HEX2STR_BUFFERS - 1)]; |
| char *obuf = ret; |
| u8 *ibuf = buf; |
| |
| if (len > HEX2STR_MAX_LEN) |
| len = HEX2STR_MAX_LEN; |
| |
| if (len <= 0) { |
| ret[0] = '\0'; |
| return ret; |
| } |
| |
| while (len--) { |
| *obuf++ = BIN2HEX(*ibuf >> 4); |
| *obuf++ = BIN2HEX(*ibuf & 0xf); |
| *obuf++ = '-'; |
| ibuf++; |
| } |
| *(--obuf) = '\0'; |
| |
| return ret; |
| } |
| |
| #define MAC2STR_BUFFERS 4 |
| |
| static inline char *mac2str(u8 *mac) |
| { |
| static atomic_t a = ATOMIC_INIT(0); |
| static char bufs[MAC2STR_BUFFERS][6 * 3]; |
| char *str; |
| |
| str = bufs[atomic_inc_return(&a) & (MAC2STR_BUFFERS - 1)]; |
| sprintf(str, "%02x:%02x:%02x:%02x:%02x:%02x", |
| mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); |
| return str; |
| } |
| |
| /* LED trigger */ |
| static int tx_activity; |
| static void at76_ledtrig_tx_timerfunc(unsigned long data); |
| static DEFINE_TIMER(ledtrig_tx_timer, at76_ledtrig_tx_timerfunc, 0, 0); |
| DEFINE_LED_TRIGGER(ledtrig_tx); |
| |
| static void at76_ledtrig_tx_timerfunc(unsigned long data) |
| { |
| static int tx_lastactivity; |
| |
| if (tx_lastactivity != tx_activity) { |
| tx_lastactivity = tx_activity; |
| led_trigger_event(ledtrig_tx, LED_FULL); |
| mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4); |
| } else |
| led_trigger_event(ledtrig_tx, LED_OFF); |
| } |
| |
| static void at76_ledtrig_tx_activity(void) |
| { |
| tx_activity++; |
| if (!timer_pending(&ledtrig_tx_timer)) |
| mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4); |
| } |
| |
| /* Check if the given ssid is hidden */ |
| static inline int at76_is_hidden_ssid(u8 *ssid, int length) |
| { |
| static const u8 zeros[32]; |
| |
| if (length == 0) |
| return 1; |
| |
| if (length == 1 && ssid[0] == ' ') |
| return 1; |
| |
| return (memcmp(ssid, zeros, length) == 0); |
| } |
| |
| static inline void at76_free_bss_list(struct at76_priv *priv) |
| { |
| struct list_head *next, *ptr; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&priv->bss_list_spinlock, flags); |
| |
| priv->curr_bss = NULL; |
| |
| list_for_each_safe(ptr, next, &priv->bss_list) { |
| list_del(ptr); |
| kfree(list_entry(ptr, struct bss_info, list)); |
| } |
| |
| spin_unlock_irqrestore(&priv->bss_list_spinlock, flags); |
| } |
| |
| static int at76_remap(struct usb_device *udev) |
| { |
| int ret; |
| ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0a, |
| USB_TYPE_VENDOR | USB_DIR_OUT | |
| USB_RECIP_INTERFACE, 0, 0, NULL, 0, |
| USB_CTRL_GET_TIMEOUT); |
| if (ret < 0) |
| return ret; |
| return 0; |
| } |
| |
| static int at76_get_op_mode(struct usb_device *udev) |
| { |
| int ret; |
| u8 saved; |
| u8 *op_mode; |
| |
| op_mode = kmalloc(1, GFP_NOIO); |
| if (!op_mode) |
| return -ENOMEM; |
| ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33, |
| USB_TYPE_VENDOR | USB_DIR_IN | |
| USB_RECIP_INTERFACE, 0x01, 0, op_mode, 1, |
| USB_CTRL_GET_TIMEOUT); |
| saved = *op_mode; |
| kfree(op_mode); |
| |
| if (ret < 0) |
| return ret; |
| else if (ret < 1) |
| return -EIO; |
| else |
| return saved; |
| } |
| |
| /* Load a block of the second ("external") part of the firmware */ |
| static inline int at76_load_ext_fw_block(struct usb_device *udev, int blockno, |
| void *block, int size) |
| { |
| return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e, |
| USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, |
| 0x0802, blockno, block, size, |
| USB_CTRL_GET_TIMEOUT); |
| } |
| |
| static inline int at76_get_hw_cfg(struct usb_device *udev, |
| union at76_hwcfg *buf, int buf_size) |
| { |
| return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33, |
| USB_TYPE_VENDOR | USB_DIR_IN | |
| USB_RECIP_INTERFACE, 0x0a02, 0, |
| buf, buf_size, USB_CTRL_GET_TIMEOUT); |
| } |
| |
| /* Intersil boards use a different "value" for GetHWConfig requests */ |
| static inline int at76_get_hw_cfg_intersil(struct usb_device *udev, |
| union at76_hwcfg *buf, int buf_size) |
| { |
| return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33, |
| USB_TYPE_VENDOR | USB_DIR_IN | |
| USB_RECIP_INTERFACE, 0x0902, 0, |
| buf, buf_size, USB_CTRL_GET_TIMEOUT); |
| } |
| |
| /* Get the hardware configuration for the adapter and put it to the appropriate |
| * fields of 'priv' (the GetHWConfig request and interpretation of the result |
| * depends on the board type) */ |
| static int at76_get_hw_config(struct at76_priv *priv) |
| { |
| int ret; |
| union at76_hwcfg *hwcfg = kmalloc(sizeof(*hwcfg), GFP_KERNEL); |
| |
| if (!hwcfg) |
| return -ENOMEM; |
| |
| if (at76_is_intersil(priv->board_type)) { |
| ret = at76_get_hw_cfg_intersil(priv->udev, hwcfg, |
| sizeof(hwcfg->i)); |
| if (ret < 0) |
| goto exit; |
| memcpy(priv->mac_addr, hwcfg->i.mac_addr, ETH_ALEN); |
| priv->regulatory_domain = hwcfg->i.regulatory_domain; |
| } else if (at76_is_503rfmd(priv->board_type)) { |
| ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r3)); |
| if (ret < 0) |
| goto exit; |
| memcpy(priv->mac_addr, hwcfg->r3.mac_addr, ETH_ALEN); |
| priv->regulatory_domain = hwcfg->r3.regulatory_domain; |
| } else { |
| ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r5)); |
| if (ret < 0) |
| goto exit; |
| memcpy(priv->mac_addr, hwcfg->r5.mac_addr, ETH_ALEN); |
| priv->regulatory_domain = hwcfg->r5.regulatory_domain; |
| } |
| |
| exit: |
| kfree(hwcfg); |
| if (ret < 0) |
| printk(KERN_ERR "%s: cannot get HW Config (error %d)\n", |
| priv->netdev->name, ret); |
| |
| return ret; |
| } |
| |
| static struct reg_domain const *at76_get_reg_domain(u16 code) |
| { |
| int i; |
| static struct reg_domain const fd_tab[] = { |
| {0x10, "FCC (USA)", 0x7ff}, /* ch 1-11 */ |
| {0x20, "IC (Canada)", 0x7ff}, /* ch 1-11 */ |
| {0x30, "ETSI (most of Europe)", 0x1fff}, /* ch 1-13 */ |
| {0x31, "Spain", 0x600}, /* ch 10-11 */ |
| {0x32, "France", 0x1e00}, /* ch 10-13 */ |
| {0x40, "MKK (Japan)", 0x2000}, /* ch 14 */ |
| {0x41, "MKK1 (Japan)", 0x3fff}, /* ch 1-14 */ |
| {0x50, "Israel", 0x3fc}, /* ch 3-9 */ |
| {0x00, "<unknown>", 0xffffffff} /* ch 1-32 */ |
| }; |
| |
| /* Last entry is fallback for unknown domain code */ |
| for (i = 0; i < ARRAY_SIZE(fd_tab) - 1; i++) |
| if (code == fd_tab[i].code) |
| break; |
| |
| return &fd_tab[i]; |
| } |
| |
| static inline int at76_get_mib(struct usb_device *udev, u16 mib, void *buf, |
| int buf_size) |
| { |
| int ret; |
| |
| ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33, |
| USB_TYPE_VENDOR | USB_DIR_IN | |
| USB_RECIP_INTERFACE, mib << 8, 0, buf, buf_size, |
| USB_CTRL_GET_TIMEOUT); |
| if (ret >= 0 && ret != buf_size) |
| return -EIO; |
| return ret; |
| } |
| |
| /* Return positive number for status, negative for an error */ |
| static inline int at76_get_cmd_status(struct usb_device *udev, u8 cmd) |
| { |
| u8 *stat_buf; |
| int ret; |
| |
| stat_buf = kmalloc(40, GFP_NOIO); |
| if (!stat_buf) |
| return -ENOMEM; |
| |
| ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x22, |
| USB_TYPE_VENDOR | USB_DIR_IN | |
| USB_RECIP_INTERFACE, cmd, 0, stat_buf, |
| 40, USB_CTRL_GET_TIMEOUT); |
| if (ret >= 0) |
| ret = stat_buf[5]; |
| kfree(stat_buf); |
| |
| return ret; |
| } |
| |
| static int at76_set_card_command(struct usb_device *udev, u8 cmd, void *buf, |
| int buf_size) |
| { |
| int ret; |
| struct at76_command *cmd_buf = kmalloc(sizeof(struct at76_command) + |
| buf_size, GFP_KERNEL); |
| |
| if (!cmd_buf) |
| return -ENOMEM; |
| |
| cmd_buf->cmd = cmd; |
| cmd_buf->reserved = 0; |
| cmd_buf->size = cpu_to_le16(buf_size); |
| memcpy(cmd_buf->data, buf, buf_size); |
| |
| ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e, |
| USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, |
| 0, 0, cmd_buf, |
| sizeof(struct at76_command) + buf_size, |
| USB_CTRL_GET_TIMEOUT); |
| kfree(cmd_buf); |
| return ret; |
| } |
| |
| #define MAKE_CMD_STATUS_CASE(c) case (c): return #c |
| static const char *at76_get_cmd_status_string(u8 cmd_status) |
| { |
| switch (cmd_status) { |
| MAKE_CMD_STATUS_CASE(CMD_STATUS_IDLE); |
| MAKE_CMD_STATUS_CASE(CMD_STATUS_COMPLETE); |
| MAKE_CMD_STATUS_CASE(CMD_STATUS_UNKNOWN); |
| MAKE_CMD_STATUS_CASE(CMD_STATUS_INVALID_PARAMETER); |
| MAKE_CMD_STATUS_CASE(CMD_STATUS_FUNCTION_NOT_SUPPORTED); |
| MAKE_CMD_STATUS_CASE(CMD_STATUS_TIME_OUT); |
| MAKE_CMD_STATUS_CASE(CMD_STATUS_IN_PROGRESS); |
| MAKE_CMD_STATUS_CASE(CMD_STATUS_HOST_FAILURE); |
| MAKE_CMD_STATUS_CASE(CMD_STATUS_SCAN_FAILED); |
| } |
| |
| return "UNKNOWN"; |
| } |
| |
| /* Wait until the command is completed */ |
| static int at76_wait_completion(struct at76_priv *priv, int cmd) |
| { |
| int status = 0; |
| unsigned long timeout = jiffies + CMD_COMPLETION_TIMEOUT; |
| |
| do { |
| status = at76_get_cmd_status(priv->udev, cmd); |
| if (status < 0) { |
| printk(KERN_ERR "%s: at76_get_cmd_status failed: %d\n", |
| priv->netdev->name, status); |
| break; |
| } |
| |
| at76_dbg(DBG_WAIT_COMPLETE, |
| "%s: Waiting on cmd %d, status = %d (%s)", |
| priv->netdev->name, cmd, status, |
| at76_get_cmd_status_string(status)); |
| |
| if (status != CMD_STATUS_IN_PROGRESS |
| && status != CMD_STATUS_IDLE) |
| break; |
| |
| schedule_timeout_interruptible(HZ / 10); /* 100 ms */ |
| if (time_after(jiffies, timeout)) { |
| printk(KERN_ERR |
| "%s: completion timeout for command %d\n", |
| priv->netdev->name, cmd); |
| status = -ETIMEDOUT; |
| break; |
| } |
| } while (1); |
| |
| return status; |
| } |
| |
| static int at76_set_mib(struct at76_priv *priv, struct set_mib_buffer *buf) |
| { |
| int ret; |
| |
| ret = at76_set_card_command(priv->udev, CMD_SET_MIB, buf, |
| offsetof(struct set_mib_buffer, |
| data) + buf->size); |
| if (ret < 0) |
| return ret; |
| |
| ret = at76_wait_completion(priv, CMD_SET_MIB); |
| if (ret != CMD_STATUS_COMPLETE) { |
| printk(KERN_INFO |
| "%s: set_mib: at76_wait_completion failed " |
| "with %d\n", priv->netdev->name, ret); |
| ret = -EIO; |
| } |
| |
| return ret; |
| } |
| |
| /* Return < 0 on error, == 0 if no command sent, == 1 if cmd sent */ |
| static int at76_set_radio(struct at76_priv *priv, int enable) |
| { |
| int ret; |
| int cmd; |
| |
| if (priv->radio_on == enable) |
| return 0; |
| |
| cmd = enable ? CMD_RADIO_ON : CMD_RADIO_OFF; |
| |
| ret = at76_set_card_command(priv->udev, cmd, NULL, 0); |
| if (ret < 0) |
| printk(KERN_ERR "%s: at76_set_card_command(%d) failed: %d\n", |
| priv->netdev->name, cmd, ret); |
| else |
| ret = 1; |
| |
| priv->radio_on = enable; |
| return ret; |
| } |
| |
| /* Set current power save mode (AT76_PM_OFF/AT76_PM_ON/AT76_PM_SMART) */ |
| static int at76_set_pm_mode(struct at76_priv *priv) |
| { |
| int ret = 0; |
| |
| priv->mib_buf.type = MIB_MAC_MGMT; |
| priv->mib_buf.size = 1; |
| priv->mib_buf.index = offsetof(struct mib_mac_mgmt, power_mgmt_mode); |
| priv->mib_buf.data.byte = priv->pm_mode; |
| |
| ret = at76_set_mib(priv, &priv->mib_buf); |
| if (ret < 0) |
| printk(KERN_ERR "%s: set_mib (pm_mode) failed: %d\n", |
| priv->netdev->name, ret); |
| |
| return ret; |
| } |
| |
| /* Set the association id for power save mode */ |
| static int at76_set_associd(struct at76_priv *priv, u16 id) |
| { |
| int ret = 0; |
| |
| priv->mib_buf.type = MIB_MAC_MGMT; |
| priv->mib_buf.size = 2; |
| priv->mib_buf.index = offsetof(struct mib_mac_mgmt, station_id); |
| priv->mib_buf.data.word = cpu_to_le16(id); |
| |
| ret = at76_set_mib(priv, &priv->mib_buf); |
| if (ret < 0) |
| printk(KERN_ERR "%s: set_mib (associd) failed: %d\n", |
| priv->netdev->name, ret); |
| |
| return ret; |
| } |
| |
| /* Set the listen interval for power save mode */ |
| static int at76_set_listen_interval(struct at76_priv *priv, u16 interval) |
| { |
| int ret = 0; |
| |
| priv->mib_buf.type = MIB_MAC; |
| priv->mib_buf.size = 2; |
| priv->mib_buf.index = offsetof(struct mib_mac, listen_interval); |
| priv->mib_buf.data.word = cpu_to_le16(interval); |
| |
| ret = at76_set_mib(priv, &priv->mib_buf); |
| if (ret < 0) |
| printk(KERN_ERR |
| "%s: set_mib (listen_interval) failed: %d\n", |
| priv->netdev->name, ret); |
| |
| return ret; |
| } |
| |
| static int at76_set_preamble(struct at76_priv *priv, u8 type) |
| { |
| int ret = 0; |
| |
| priv->mib_buf.type = MIB_LOCAL; |
| priv->mib_buf.size = 1; |
| priv->mib_buf.index = offsetof(struct mib_local, preamble_type); |
| priv->mib_buf.data.byte = type; |
| |
| ret = at76_set_mib(priv, &priv->mib_buf); |
| if (ret < 0) |
| printk(KERN_ERR "%s: set_mib (preamble) failed: %d\n", |
| priv->netdev->name, ret); |
| |
| return ret; |
| } |
| |
| static int at76_set_frag(struct at76_priv *priv, u16 size) |
| { |
| int ret = 0; |
| |
| priv->mib_buf.type = MIB_MAC; |
| priv->mib_buf.size = 2; |
| priv->mib_buf.index = offsetof(struct mib_mac, frag_threshold); |
| priv->mib_buf.data.word = cpu_to_le16(size); |
| |
| ret = at76_set_mib(priv, &priv->mib_buf); |
| if (ret < 0) |
| printk(KERN_ERR "%s: set_mib (frag threshold) failed: %d\n", |
| priv->netdev->name, ret); |
| |
| return ret; |
| } |
| |
| static int at76_set_rts(struct at76_priv *priv, u16 size) |
| { |
| int ret = 0; |
| |
| priv->mib_buf.type = MIB_MAC; |
| priv->mib_buf.size = 2; |
| priv->mib_buf.index = offsetof(struct mib_mac, rts_threshold); |
| priv->mib_buf.data.word = cpu_to_le16(size); |
| |
| ret = at76_set_mib(priv, &priv->mib_buf); |
| if (ret < 0) |
| printk(KERN_ERR "%s: set_mib (rts) failed: %d\n", |
| priv->netdev->name, ret); |
| |
| return ret; |
| } |
| |
| static int at76_set_autorate_fallback(struct at76_priv *priv, int onoff) |
| { |
| int ret = 0; |
| |
| priv->mib_buf.type = MIB_LOCAL; |
| priv->mib_buf.size = 1; |
| priv->mib_buf.index = offsetof(struct mib_local, txautorate_fallback); |
| priv->mib_buf.data.byte = onoff; |
| |
| ret = at76_set_mib(priv, &priv->mib_buf); |
| if (ret < 0) |
| printk(KERN_ERR "%s: set_mib (autorate fallback) failed: %d\n", |
| priv->netdev->name, ret); |
| |
| return ret; |
| } |
| |
| static int at76_add_mac_address(struct at76_priv *priv, void *addr) |
| { |
| int ret = 0; |
| |
| priv->mib_buf.type = MIB_MAC_ADDR; |
| priv->mib_buf.size = ETH_ALEN; |
| priv->mib_buf.index = offsetof(struct mib_mac_addr, mac_addr); |
| memcpy(priv->mib_buf.data.addr, addr, ETH_ALEN); |
| |
| ret = at76_set_mib(priv, &priv->mib_buf); |
| if (ret < 0) |
| printk(KERN_ERR "%s: set_mib (MAC_ADDR, mac_addr) failed: %d\n", |
| priv->netdev->name, ret); |
| |
| return ret; |
| } |
| |
| static void at76_dump_mib_mac_addr(struct at76_priv *priv) |
| { |
| int i; |
| int ret; |
| struct mib_mac_addr *m = kmalloc(sizeof(struct mib_mac_addr), |
| GFP_KERNEL); |
| |
| if (!m) |
| return; |
| |
| ret = at76_get_mib(priv->udev, MIB_MAC_ADDR, m, |
| sizeof(struct mib_mac_addr)); |
| if (ret < 0) { |
| printk(KERN_ERR "%s: at76_get_mib (MAC_ADDR) failed: %d\n", |
| priv->netdev->name, ret); |
| goto exit; |
| } |
| |
| at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: mac_addr %s res 0x%x 0x%x", |
| priv->netdev->name, |
| mac2str(m->mac_addr), m->res[0], m->res[1]); |
| for (i = 0; i < ARRAY_SIZE(m->group_addr); i++) |
| at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: group addr %d: %s, " |
| "status %d", priv->netdev->name, i, |
| mac2str(m->group_addr[i]), m->group_addr_status[i]); |
| exit: |
| kfree(m); |
| } |
| |
| static void at76_dump_mib_mac_wep(struct at76_priv *priv) |
| { |
| int i; |
| int ret; |
| int key_len; |
| struct mib_mac_wep *m = kmalloc(sizeof(struct mib_mac_wep), GFP_KERNEL); |
| |
| if (!m) |
| return; |
| |
| ret = at76_get_mib(priv->udev, MIB_MAC_WEP, m, |
| sizeof(struct mib_mac_wep)); |
| if (ret < 0) { |
| printk(KERN_ERR "%s: at76_get_mib (MAC_WEP) failed: %d\n", |
| priv->netdev->name, ret); |
| goto exit; |
| } |
| |
| at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: priv_invoked %u def_key_id %u " |
| "key_len %u excl_unencr %u wep_icv_err %u wep_excluded %u " |
| "encr_level %u key %d", priv->netdev->name, |
| m->privacy_invoked, m->wep_default_key_id, |
| m->wep_key_mapping_len, m->exclude_unencrypted, |
| le32_to_cpu(m->wep_icv_error_count), |
| le32_to_cpu(m->wep_excluded_count), m->encryption_level, |
| m->wep_default_key_id); |
| |
| key_len = (m->encryption_level == 1) ? |
| WEP_SMALL_KEY_LEN : WEP_LARGE_KEY_LEN; |
| |
| for (i = 0; i < WEP_KEYS; i++) |
| at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: key %d: %s", |
| priv->netdev->name, i, |
| hex2str(m->wep_default_keyvalue[i], key_len)); |
| exit: |
| kfree(m); |
| } |
| |
| static void at76_dump_mib_mac_mgmt(struct at76_priv *priv) |
| { |
| int ret; |
| struct mib_mac_mgmt *m = kmalloc(sizeof(struct mib_mac_mgmt), |
| GFP_KERNEL); |
| |
| if (!m) |
| return; |
| |
| ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, m, |
| sizeof(struct mib_mac_mgmt)); |
| if (ret < 0) { |
| printk(KERN_ERR "%s: at76_get_mib (MAC_MGMT) failed: %d\n", |
| priv->netdev->name, ret); |
| goto exit; |
| } |
| |
| at76_dbg(DBG_MIB, "%s: MIB MAC_MGMT: beacon_period %d CFP_max_duration " |
| "%d medium_occupancy_limit %d station_id 0x%x ATIM_window %d " |
| "CFP_mode %d privacy_opt_impl %d DTIM_period %d CFP_period %d " |
| "current_bssid %s current_essid %s current_bss_type %d " |
| "pm_mode %d ibss_change %d res %d " |
| "multi_domain_capability_implemented %d " |
| "international_roaming %d country_string %.3s", |
| priv->netdev->name, le16_to_cpu(m->beacon_period), |
| le16_to_cpu(m->CFP_max_duration), |
| le16_to_cpu(m->medium_occupancy_limit), |
| le16_to_cpu(m->station_id), le16_to_cpu(m->ATIM_window), |
| m->CFP_mode, m->privacy_option_implemented, m->DTIM_period, |
| m->CFP_period, mac2str(m->current_bssid), |
| hex2str(m->current_essid, IW_ESSID_MAX_SIZE), |
| m->current_bss_type, m->power_mgmt_mode, m->ibss_change, |
| m->res, m->multi_domain_capability_implemented, |
| m->multi_domain_capability_enabled, m->country_string); |
| exit: |
| kfree(m); |
| } |
| |
| static void at76_dump_mib_mac(struct at76_priv *priv) |
| { |
| int ret; |
| struct mib_mac *m = kmalloc(sizeof(struct mib_mac), GFP_KERNEL); |
| |
| if (!m) |
| return; |
| |
| ret = at76_get_mib(priv->udev, MIB_MAC, m, sizeof(struct mib_mac)); |
| if (ret < 0) { |
| printk(KERN_ERR "%s: at76_get_mib (MAC) failed: %d\n", |
| priv->netdev->name, ret); |
| goto exit; |
| } |
| |
| at76_dbg(DBG_MIB, "%s: MIB MAC: max_tx_msdu_lifetime %d " |
| "max_rx_lifetime %d frag_threshold %d rts_threshold %d " |
| "cwmin %d cwmax %d short_retry_time %d long_retry_time %d " |
| "scan_type %d scan_channel %d probe_delay %u " |
| "min_channel_time %d max_channel_time %d listen_int %d " |
| "desired_ssid %s desired_bssid %s desired_bsstype %d", |
| priv->netdev->name, le32_to_cpu(m->max_tx_msdu_lifetime), |
| le32_to_cpu(m->max_rx_lifetime), |
| le16_to_cpu(m->frag_threshold), le16_to_cpu(m->rts_threshold), |
| le16_to_cpu(m->cwmin), le16_to_cpu(m->cwmax), |
| m->short_retry_time, m->long_retry_time, m->scan_type, |
| m->scan_channel, le16_to_cpu(m->probe_delay), |
| le16_to_cpu(m->min_channel_time), |
| le16_to_cpu(m->max_channel_time), |
| le16_to_cpu(m->listen_interval), |
| hex2str(m->desired_ssid, IW_ESSID_MAX_SIZE), |
| mac2str(m->desired_bssid), m->desired_bsstype); |
| exit: |
| kfree(m); |
| } |
| |
| static void at76_dump_mib_phy(struct at76_priv *priv) |
| { |
| int ret; |
| struct mib_phy *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL); |
| |
| if (!m) |
| return; |
| |
| ret = at76_get_mib(priv->udev, MIB_PHY, m, sizeof(struct mib_phy)); |
| if (ret < 0) { |
| printk(KERN_ERR "%s: at76_get_mib (PHY) failed: %d\n", |
| priv->netdev->name, ret); |
| goto exit; |
| } |
| |
| at76_dbg(DBG_MIB, "%s: MIB PHY: ed_threshold %d slot_time %d " |
| "sifs_time %d preamble_length %d plcp_header_length %d " |
| "mpdu_max_length %d cca_mode_supported %d operation_rate_set " |
| "0x%x 0x%x 0x%x 0x%x channel_id %d current_cca_mode %d " |
| "phy_type %d current_reg_domain %d", |
| priv->netdev->name, le32_to_cpu(m->ed_threshold), |
| le16_to_cpu(m->slot_time), le16_to_cpu(m->sifs_time), |
| le16_to_cpu(m->preamble_length), |
| le16_to_cpu(m->plcp_header_length), |
| le16_to_cpu(m->mpdu_max_length), |
| le16_to_cpu(m->cca_mode_supported), m->operation_rate_set[0], |
| m->operation_rate_set[1], m->operation_rate_set[2], |
| m->operation_rate_set[3], m->channel_id, m->current_cca_mode, |
| m->phy_type, m->current_reg_domain); |
| exit: |
| kfree(m); |
| } |
| |
| static void at76_dump_mib_local(struct at76_priv *priv) |
| { |
| int ret; |
| struct mib_local *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL); |
| |
| if (!m) |
| return; |
| |
| ret = at76_get_mib(priv->udev, MIB_LOCAL, m, sizeof(struct mib_local)); |
| if (ret < 0) { |
| printk(KERN_ERR "%s: at76_get_mib (LOCAL) failed: %d\n", |
| priv->netdev->name, ret); |
| goto exit; |
| } |
| |
| at76_dbg(DBG_MIB, "%s: MIB LOCAL: beacon_enable %d " |
| "txautorate_fallback %d ssid_size %d promiscuous_mode %d " |
| "preamble_type %d", priv->netdev->name, m->beacon_enable, |
| m->txautorate_fallback, m->ssid_size, m->promiscuous_mode, |
| m->preamble_type); |
| exit: |
| kfree(m); |
| } |
| |
| static void at76_dump_mib_mdomain(struct at76_priv *priv) |
| { |
| int ret; |
| struct mib_mdomain *m = kmalloc(sizeof(struct mib_mdomain), GFP_KERNEL); |
| |
| if (!m) |
| return; |
| |
| ret = at76_get_mib(priv->udev, MIB_MDOMAIN, m, |
| sizeof(struct mib_mdomain)); |
| if (ret < 0) { |
| printk(KERN_ERR "%s: at76_get_mib (MDOMAIN) failed: %d\n", |
| priv->netdev->name, ret); |
| goto exit; |
| } |
| |
| at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: channel_list %s", |
| priv->netdev->name, |
| hex2str(m->channel_list, sizeof(m->channel_list))); |
| |
| at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: tx_powerlevel %s", |
| priv->netdev->name, |
| hex2str(m->tx_powerlevel, sizeof(m->tx_powerlevel))); |
| exit: |
| kfree(m); |
| } |
| |
| static int at76_get_current_bssid(struct at76_priv *priv) |
| { |
| int ret = 0; |
| struct mib_mac_mgmt *mac_mgmt = |
| kmalloc(sizeof(struct mib_mac_mgmt), GFP_KERNEL); |
| |
| if (!mac_mgmt) { |
| ret = -ENOMEM; |
| goto exit; |
| } |
| |
| ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, mac_mgmt, |
| sizeof(struct mib_mac_mgmt)); |
| if (ret < 0) { |
| printk(KERN_ERR "%s: at76_get_mib failed: %d\n", |
| priv->netdev->name, ret); |
| goto error; |
| } |
| memcpy(priv->bssid, mac_mgmt->current_bssid, ETH_ALEN); |
| printk(KERN_INFO "%s: using BSSID %s\n", priv->netdev->name, |
| mac2str(priv->bssid)); |
| error: |
| kfree(mac_mgmt); |
| exit: |
| return ret; |
| } |
| |
| static int at76_get_current_channel(struct at76_priv *priv) |
| { |
| int ret = 0; |
| struct mib_phy *phy = kmalloc(sizeof(struct mib_phy), GFP_KERNEL); |
| |
| if (!phy) { |
| ret = -ENOMEM; |
| goto exit; |
| } |
| ret = at76_get_mib(priv->udev, MIB_PHY, phy, sizeof(struct mib_phy)); |
| if (ret < 0) { |
| printk(KERN_ERR "%s: at76_get_mib(MIB_PHY) failed: %d\n", |
| priv->netdev->name, ret); |
| goto error; |
| } |
| priv->channel = phy->channel_id; |
| error: |
| kfree(phy); |
| exit: |
| return ret; |
| } |
| |
| /** |
| * at76_start_scan - start a scan |
| * |
| * @use_essid - use the configured ESSID in non passive mode |
| */ |
| static int at76_start_scan(struct at76_priv *priv, int use_essid) |
| { |
| struct at76_req_scan scan; |
| |
| memset(&scan, 0, sizeof(struct at76_req_scan)); |
| memset(scan.bssid, 0xff, ETH_ALEN); |
| |
| if (use_essid) { |
| memcpy(scan.essid, priv->essid, IW_ESSID_MAX_SIZE); |
| scan.essid_size = priv->essid_size; |
| } else |
| scan.essid_size = 0; |
| |
| /* jal: why should we start at a certain channel? we do scan the whole |
| range allowed by reg domain. */ |
| scan.channel = priv->channel; |
| |
| /* atmelwlandriver differs between scan type 0 and 1 (active/passive) |
| For ad-hoc mode, it uses type 0 only. */ |
| scan.scan_type = priv->scan_mode; |
| |
| /* INFO: For probe_delay, not multiplying by 1024 as this will be |
| slightly less than min_channel_time |
| (per spec: probe delay < min. channel time) */ |
| scan.min_channel_time = cpu_to_le16(priv->scan_min_time); |
| scan.max_channel_time = cpu_to_le16(priv->scan_max_time); |
| scan.probe_delay = cpu_to_le16(priv->scan_min_time * 1000); |
| scan.international_scan = 0; |
| |
| /* other values are set to 0 for type 0 */ |
| |
| at76_dbg(DBG_PROGRESS, "%s: start_scan (use_essid = %d, intl = %d, " |
| "channel = %d, probe_delay = %d, scan_min_time = %d, " |
| "scan_max_time = %d)", |
| priv->netdev->name, use_essid, |
| scan.international_scan, scan.channel, |
| le16_to_cpu(scan.probe_delay), |
| le16_to_cpu(scan.min_channel_time), |
| le16_to_cpu(scan.max_channel_time)); |
| |
| return at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan)); |
| } |
| |
| /* Enable monitor mode */ |
| static int at76_start_monitor(struct at76_priv *priv) |
| { |
| struct at76_req_scan scan; |
| int ret; |
| |
| memset(&scan, 0, sizeof(struct at76_req_scan)); |
| memset(scan.bssid, 0xff, ETH_ALEN); |
| |
| scan.channel = priv->channel; |
| scan.scan_type = SCAN_TYPE_PASSIVE; |
| scan.international_scan = 0; |
| |
| ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan)); |
| if (ret >= 0) |
| ret = at76_get_cmd_status(priv->udev, CMD_SCAN); |
| |
| return ret; |
| } |
| |
| static int at76_start_ibss(struct at76_priv *priv) |
| { |
| struct at76_req_ibss bss; |
| int ret; |
| |
| WARN_ON(priv->mac_state != MAC_OWN_IBSS); |
| if (priv->mac_state != MAC_OWN_IBSS) |
| return -EBUSY; |
| |
| memset(&bss, 0, sizeof(struct at76_req_ibss)); |
| memset(bss.bssid, 0xff, ETH_ALEN); |
| memcpy(bss.essid, priv->essid, IW_ESSID_MAX_SIZE); |
| bss.essid_size = priv->essid_size; |
| bss.bss_type = ADHOC_MODE; |
| bss.channel = priv->channel; |
| |
| ret = at76_set_card_command(priv->udev, CMD_START_IBSS, &bss, |
| sizeof(struct at76_req_ibss)); |
| if (ret < 0) { |
| printk(KERN_ERR "%s: start_ibss failed: %d\n", |
| priv->netdev->name, ret); |
| return ret; |
| } |
| |
| ret = at76_wait_completion(priv, CMD_START_IBSS); |
| if (ret != CMD_STATUS_COMPLETE) { |
| printk(KERN_ERR "%s: start_ibss failed to complete, %d\n", |
| priv->netdev->name, ret); |
| return ret; |
| } |
| |
| ret = at76_get_current_bssid(priv); |
| if (ret < 0) |
| return ret; |
| |
| ret = at76_get_current_channel(priv); |
| if (ret < 0) |
| return ret; |
| |
| /* not sure what this is good for ??? */ |
| priv->mib_buf.type = MIB_MAC_MGMT; |
| priv->mib_buf.size = 1; |
| priv->mib_buf.index = offsetof(struct mib_mac_mgmt, ibss_change); |
| priv->mib_buf.data.byte = 0; |
| |
| ret = at76_set_mib(priv, &priv->mib_buf); |
| if (ret < 0) { |
| printk(KERN_ERR "%s: set_mib (ibss change ok) failed: %d\n", |
| priv->netdev->name, ret); |
| return ret; |
| } |
| |
| netif_carrier_on(priv->netdev); |
| netif_start_queue(priv->netdev); |
| return 0; |
| } |
| |
| /* Request card to join BSS in managed or ad-hoc mode */ |
| static int at76_join_bss(struct at76_priv *priv, struct bss_info *ptr) |
| { |
| struct at76_req_join join; |
| |
| BUG_ON(!ptr); |
| |
| memset(&join, 0, sizeof(struct at76_req_join)); |
| memcpy(join.bssid, ptr->bssid, ETH_ALEN); |
| memcpy(join.essid, ptr->ssid, ptr->ssid_len); |
| join.essid_size = ptr->ssid_len; |
| join.bss_type = (priv->iw_mode == IW_MODE_ADHOC ? 1 : 2); |
| join.channel = ptr->channel; |
| join.timeout = cpu_to_le16(2000); |
| |
| at76_dbg(DBG_PROGRESS, |
| "%s join addr %s ssid %s type %d ch %d timeout %d", |
| priv->netdev->name, mac2str(join.bssid), join.essid, |
| join.bss_type, join.channel, le16_to_cpu(join.timeout)); |
| return at76_set_card_command(priv->udev, CMD_JOIN, &join, |
| sizeof(struct at76_req_join)); |
| } |
| |
| /* Calculate padding from txbuf->wlength (which excludes the USB TX header), |
| likely to compensate a flaw in the AT76C503A USB part ... */ |
| static inline int at76_calc_padding(int wlen) |
| { |
| /* add the USB TX header */ |
| wlen += AT76_TX_HDRLEN; |
| |
| wlen = wlen % 64; |
| |
| if (wlen < 50) |
| return 50 - wlen; |
| |
| if (wlen >= 61) |
| return 64 + 50 - wlen; |
| |
| return 0; |
| } |
| |
| /* We are doing a lot of things here in an interrupt. Need |
| a bh handler (Watching TV with a TV card is probably |
| a good test: if you see flickers, we are doing too much. |
| Currently I do see flickers... even with our tasklet :-( ) |
| Maybe because the bttv driver and usb-uhci use the same interrupt |
| */ |
| /* Or maybe because our BH handler is preempting bttv's BH handler.. BHs don't |
| * solve everything.. (alex) */ |
| static void at76_rx_callback(struct urb *urb) |
| { |
| struct at76_priv *priv = urb->context; |
| |
| priv->rx_tasklet.data = (unsigned long)urb; |
| tasklet_schedule(&priv->rx_tasklet); |
| return; |
| } |
| |
| static void at76_tx_callback(struct urb *urb) |
| { |
| struct at76_priv *priv = urb->context; |
| struct net_device_stats *stats = &priv->stats; |
| unsigned long flags; |
| struct at76_tx_buffer *mgmt_buf; |
| int ret; |
| |
| switch (urb->status) { |
| case 0: |
| stats->tx_packets++; |
| break; |
| case -ENOENT: |
| case -ECONNRESET: |
| /* urb has been unlinked */ |
| return; |
| default: |
| at76_dbg(DBG_URB, "%s - nonzero tx status received: %d", |
| __func__, urb->status); |
| stats->tx_errors++; |
| break; |
| } |
| |
| spin_lock_irqsave(&priv->mgmt_spinlock, flags); |
| mgmt_buf = priv->next_mgmt_bulk; |
| priv->next_mgmt_bulk = NULL; |
| spin_unlock_irqrestore(&priv->mgmt_spinlock, flags); |
| |
| if (!mgmt_buf) { |
| netif_wake_queue(priv->netdev); |
| return; |
| } |
| |
| /* we don't copy the padding bytes, but add them |
| to the length */ |
| memcpy(priv->bulk_out_buffer, mgmt_buf, |
| le16_to_cpu(mgmt_buf->wlength) + AT76_TX_HDRLEN); |
| usb_fill_bulk_urb(priv->tx_urb, priv->udev, priv->tx_pipe, |
| priv->bulk_out_buffer, |
| le16_to_cpu(mgmt_buf->wlength) + mgmt_buf->padding + |
| AT76_TX_HDRLEN, at76_tx_callback, priv); |
| ret = usb_submit_urb(priv->tx_urb, GFP_ATOMIC); |
| if (ret) |
| printk(KERN_ERR "%s: error in tx submit urb: %d\n", |
| priv->netdev->name, ret); |
| |
| kfree(mgmt_buf); |
| } |
| |
| /* Send a management frame on bulk-out. txbuf->wlength must be set */ |
| static int at76_tx_mgmt(struct at76_priv *priv, struct at76_tx_buffer *txbuf) |
| { |
| unsigned long flags; |
| int ret; |
| int urb_status; |
| void *oldbuf = NULL; |
| |
| netif_carrier_off(priv->netdev); /* stop netdev watchdog */ |
| netif_stop_queue(priv->netdev); /* stop tx data packets */ |
| |
| spin_lock_irqsave(&priv->mgmt_spinlock, flags); |
| |
| urb_status = priv->tx_urb->status; |
| if (urb_status == -EINPROGRESS) { |
| /* cannot transmit now, put in the queue */ |
| oldbuf = priv->next_mgmt_bulk; |
| priv->next_mgmt_bulk = txbuf; |
| } |
| spin_unlock_irqrestore(&priv->mgmt_spinlock, flags); |
| |
| if (oldbuf) { |
| /* a data/mgmt tx is already pending in the URB - |
| if this is no error in some situations we must |
| implement a queue or silently modify the old msg */ |
| printk(KERN_ERR "%s: removed pending mgmt buffer %s\n", |
| priv->netdev->name, hex2str(oldbuf, 64)); |
| kfree(oldbuf); |
| return 0; |
| } |
| |
| txbuf->tx_rate = TX_RATE_1MBIT; |
| txbuf->padding = at76_calc_padding(le16_to_cpu(txbuf->wlength)); |
| memset(txbuf->reserved, 0, sizeof(txbuf->reserved)); |
| |
| if (priv->next_mgmt_bulk) |
| printk(KERN_ERR "%s: URB status %d, but mgmt is pending\n", |
| priv->netdev->name, urb_status); |
| |
| at76_dbg(DBG_TX_MGMT, |
| "%s: tx mgmt: wlen %d tx_rate %d pad %d %s", |
| priv->netdev->name, le16_to_cpu(txbuf->wlength), |
| txbuf->tx_rate, txbuf->padding, |
| hex2str(txbuf->packet, le16_to_cpu(txbuf->wlength))); |
| |
| /* txbuf was not consumed above -> send mgmt msg immediately */ |
| memcpy(priv->bulk_out_buffer, txbuf, |
| le16_to_cpu(txbuf->wlength) + AT76_TX_HDRLEN); |
| usb_fill_bulk_urb(priv->tx_urb, priv->udev, priv->tx_pipe, |
| priv->bulk_out_buffer, |
| le16_to_cpu(txbuf->wlength) + txbuf->padding + |
| AT76_TX_HDRLEN, at76_tx_callback, priv); |
| ret = usb_submit_urb(priv->tx_urb, GFP_ATOMIC); |
| if (ret) |
| printk(KERN_ERR "%s: error in tx submit urb: %d\n", |
| priv->netdev->name, ret); |
| |
| kfree(txbuf); |
| |
| return ret; |
| } |
| |
| /* Go to the next information element */ |
| static inline void next_ie(struct ieee80211_info_element **ie) |
| { |
| *ie = (struct ieee80211_info_element *)(&(*ie)->data[(*ie)->len]); |
| } |
| |
| /* Challenge is the challenge string (in TLV format) |
| we got with seq_nr 2 for shared secret authentication only and |
| send in seq_nr 3 WEP encrypted to prove we have the correct WEP key; |
| otherwise it is NULL */ |
| static int at76_auth_req(struct at76_priv *priv, struct bss_info *bss, |
| int seq_nr, struct ieee80211_info_element *challenge) |
| { |
| struct at76_tx_buffer *tx_buffer; |
| struct ieee80211_hdr_3addr *mgmt; |
| struct ieee80211_auth *req; |
| int buf_len = (seq_nr != 3 ? AUTH_FRAME_SIZE : |
| AUTH_FRAME_SIZE + 1 + 1 + challenge->len); |
| |
| BUG_ON(!bss); |
| BUG_ON(seq_nr == 3 && !challenge); |
| tx_buffer = kmalloc(buf_len + MAX_PADDING_SIZE, GFP_ATOMIC); |
| if (!tx_buffer) |
| return -ENOMEM; |
| |
| req = (struct ieee80211_auth *)tx_buffer->packet; |
| mgmt = &req->header; |
| |
| /* make wireless header */ |
| /* first auth msg is not encrypted, only the second (seq_nr == 3) */ |
| mgmt->frame_ctl = |
| cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH | |
| (seq_nr == 3 ? IEEE80211_FCTL_PROTECTED : 0)); |
| |
| mgmt->duration_id = cpu_to_le16(0x8000); |
| memcpy(mgmt->addr1, bss->bssid, ETH_ALEN); |
| memcpy(mgmt->addr2, priv->netdev->dev_addr, ETH_ALEN); |
| memcpy(mgmt->addr3, bss->bssid, ETH_ALEN); |
| mgmt->seq_ctl = cpu_to_le16(0); |
| |
| req->algorithm = cpu_to_le16(priv->auth_mode); |
| req->transaction = cpu_to_le16(seq_nr); |
| req->status = cpu_to_le16(0); |
| |
| if (seq_nr == 3) |
| memcpy(req->info_element, challenge, 1 + 1 + challenge->len); |
| |
| /* init. at76_priv tx header */ |
| tx_buffer->wlength = cpu_to_le16(buf_len - AT76_TX_HDRLEN); |
| at76_dbg(DBG_TX_MGMT, "%s: AuthReq bssid %s alg %d seq_nr %d", |
| priv->netdev->name, mac2str(mgmt->addr3), |
| le16_to_cpu(req->algorithm), le16_to_cpu(req->transaction)); |
| if (seq_nr == 3) |
| at76_dbg(DBG_TX_MGMT, "%s: AuthReq challenge: %s ...", |
| priv->netdev->name, hex2str(req->info_element, 18)); |
| |
| /* either send immediately (if no data tx is pending |
| or put it in pending list */ |
| return at76_tx_mgmt(priv, tx_buffer); |
| } |
| |
| static int at76_assoc_req(struct at76_priv *priv, struct bss_info *bss) |
| { |
| struct at76_tx_buffer *tx_buffer; |
| struct ieee80211_hdr_3addr *mgmt; |
| struct ieee80211_assoc_request *req; |
| struct ieee80211_info_element *ie; |
| char *essid; |
| int essid_len; |
| u16 capa; |
| |
| BUG_ON(!bss); |
| |
| tx_buffer = kmalloc(ASSOCREQ_MAX_SIZE + MAX_PADDING_SIZE, GFP_ATOMIC); |
| if (!tx_buffer) |
| return -ENOMEM; |
| |
| req = (struct ieee80211_assoc_request *)tx_buffer->packet; |
| mgmt = &req->header; |
| ie = req->info_element; |
| |
| /* make wireless header */ |
| mgmt->frame_ctl = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| IEEE80211_STYPE_ASSOC_REQ); |
| |
| mgmt->duration_id = cpu_to_le16(0x8000); |
| memcpy(mgmt->addr1, bss->bssid, ETH_ALEN); |
| memcpy(mgmt->addr2, priv->netdev->dev_addr, ETH_ALEN); |
| memcpy(mgmt->addr3, bss->bssid, ETH_ALEN); |
| mgmt->seq_ctl = cpu_to_le16(0); |
| |
| /* we must set the Privacy bit in the capabilities to assure an |
| Agere-based AP with optional WEP transmits encrypted frames |
| to us. AP only set the Privacy bit in their capabilities |
| if WEP is mandatory in the BSS! */ |
| capa = bss->capa; |
| if (priv->wep_enabled) |
| capa |= WLAN_CAPABILITY_PRIVACY; |
| if (priv->preamble_type != PREAMBLE_TYPE_LONG) |
| capa |= WLAN_CAPABILITY_SHORT_PREAMBLE; |
| req->capability = cpu_to_le16(capa); |
| |
| req->listen_interval = cpu_to_le16(2 * bss->beacon_interval); |
| |
| /* write TLV data elements */ |
| |
| ie->id = MFIE_TYPE_SSID; |
| ie->len = bss->ssid_len; |
| memcpy(ie->data, bss->ssid, bss->ssid_len); |
| next_ie(&ie); |
| |
| ie->id = MFIE_TYPE_RATES; |
| ie->len = sizeof(hw_rates); |
| memcpy(ie->data, hw_rates, sizeof(hw_rates)); |
| next_ie(&ie); /* ie points behind the supp_rates field */ |
| |
| /* init. at76_priv tx header */ |
| tx_buffer->wlength = cpu_to_le16((u8 *)ie - (u8 *)mgmt); |
| |
| ie = req->info_element; |
| essid = ie->data; |
| essid_len = min_t(int, IW_ESSID_MAX_SIZE, ie->len); |
| |
| next_ie(&ie); /* points to IE of rates now */ |
| at76_dbg(DBG_TX_MGMT, |
| "%s: AssocReq bssid %s capa 0x%04x ssid %.*s rates %s", |
| priv->netdev->name, mac2str(mgmt->addr3), |
| le16_to_cpu(req->capability), essid_len, essid, |
| hex2str(ie->data, ie->len)); |
| |
| /* either send immediately (if no data tx is pending |
| or put it in pending list */ |
| return at76_tx_mgmt(priv, tx_buffer); |
| } |
| |
| /* We got to check the bss_list for old entries */ |
| static void at76_bss_list_timeout(unsigned long par) |
| { |
| struct at76_priv *priv = (struct at76_priv *)par; |
| unsigned long flags; |
| struct list_head *lptr, *nptr; |
| struct bss_info *ptr; |
| |
| spin_lock_irqsave(&priv->bss_list_spinlock, flags); |
| |
| list_for_each_safe(lptr, nptr, &priv->bss_list) { |
| |
| ptr = list_entry(lptr, struct bss_info, list); |
| |
| if (ptr != priv->curr_bss |
| && time_after(jiffies, ptr->last_rx + BSS_LIST_TIMEOUT)) { |
| at76_dbg(DBG_BSS_TABLE_RM, |
| "%s: bss_list: removing old BSS %s ch %d", |
| priv->netdev->name, mac2str(ptr->bssid), |
| ptr->channel); |
| list_del(&ptr->list); |
| kfree(ptr); |
| } |
| } |
| spin_unlock_irqrestore(&priv->bss_list_spinlock, flags); |
| /* restart the timer */ |
| mod_timer(&priv->bss_list_timer, jiffies + BSS_LIST_TIMEOUT); |
| } |
| |
| static inline void at76_set_mac_state(struct at76_priv *priv, |
| enum mac_state mac_state) |
| { |
| at76_dbg(DBG_MAC_STATE, "%s state: %s", priv->netdev->name, |
| mac_states[mac_state]); |
| priv->mac_state = mac_state; |
| } |
| |
| static void at76_dump_bss_table(struct at76_priv *priv) |
| { |
| struct bss_info *ptr; |
| unsigned long flags; |
| struct list_head *lptr; |
| |
| spin_lock_irqsave(&priv->bss_list_spinlock, flags); |
| |
| at76_dbg(DBG_BSS_TABLE, "%s BSS table (curr=%p):", priv->netdev->name, |
| priv->curr_bss); |
| |
| list_for_each(lptr, &priv->bss_list) { |
| ptr = list_entry(lptr, struct bss_info, list); |
| at76_dbg(DBG_BSS_TABLE, "0x%p: bssid %s channel %d ssid %.*s " |
| "(%s) capa 0x%04x rates %s rssi %d link %d noise %d", |
| ptr, mac2str(ptr->bssid), ptr->channel, ptr->ssid_len, |
| ptr->ssid, hex2str(ptr->ssid, ptr->ssid_len), |
| ptr->capa, hex2str(ptr->rates, ptr->rates_len), |
| ptr->rssi, ptr->link_qual, ptr->noise_level); |
| } |
| spin_unlock_irqrestore(&priv->bss_list_spinlock, flags); |
| } |
| |
| /* Called upon successful association to mark interface as connected */ |
| static void at76_work_assoc_done(struct work_struct *work) |
| { |
| struct at76_priv *priv = container_of(work, struct at76_priv, |
| work_assoc_done); |
| |
| mutex_lock(&priv->mtx); |
| |
| WARN_ON(priv->mac_state != MAC_ASSOC); |
| WARN_ON(!priv->curr_bss); |
| if (priv->mac_state != MAC_ASSOC || !priv->curr_bss) |
| goto exit; |
| |
| if (priv->iw_mode == IW_MODE_INFRA) { |
| if (priv->pm_mode != AT76_PM_OFF) { |
| /* calculate the listen interval in units of |
| beacon intervals of the curr_bss */ |
| u32 pm_period_beacon = (priv->pm_period >> 10) / |
| priv->curr_bss->beacon_interval; |
| |
| pm_period_beacon = max(pm_period_beacon, 2u); |
| pm_period_beacon = min(pm_period_beacon, 0xffffu); |
| |
| at76_dbg(DBG_PM, |
| "%s: pm_mode %d assoc id 0x%x listen int %d", |
| priv->netdev->name, priv->pm_mode, |
| priv->assoc_id, pm_period_beacon); |
| |
| at76_set_associd(priv, priv->assoc_id); |
| at76_set_listen_interval(priv, (u16)pm_period_beacon); |
| } |
| schedule_delayed_work(&priv->dwork_beacon, BEACON_TIMEOUT); |
| } |
| at76_set_pm_mode(priv); |
| |
| netif_carrier_on(priv->netdev); |
| netif_wake_queue(priv->netdev); |
| at76_set_mac_state(priv, MAC_CONNECTED); |
| at76_iwevent_bss_connect(priv->netdev, priv->curr_bss->bssid); |
| at76_dbg(DBG_PROGRESS, "%s: connected to BSSID %s", |
| priv->netdev->name, mac2str(priv->curr_bss->bssid)); |
| |
| exit: |
| mutex_unlock(&priv->mtx); |
| } |
| |
| /* We only store the new mac address in netdev struct, |
| it gets set when the netdev is opened. */ |
| static int at76_set_mac_address(struct net_device *netdev, void *addr) |
| { |
| struct sockaddr *mac = addr; |
| memcpy(netdev->dev_addr, mac->sa_data, ETH_ALEN); |
| return 1; |
| } |
| |
| static struct net_device_stats *at76_get_stats(struct net_device *netdev) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| return &priv->stats; |
| } |
| |
| static struct iw_statistics *at76_get_wireless_stats(struct net_device *netdev) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| |
| at76_dbg(DBG_IOCTL, "RETURN qual %d level %d noise %d updated %d", |
| priv->wstats.qual.qual, priv->wstats.qual.level, |
| priv->wstats.qual.noise, priv->wstats.qual.updated); |
| |
| return &priv->wstats; |
| } |
| |
| static void at76_set_multicast(struct net_device *netdev) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| int promisc; |
| |
| promisc = ((netdev->flags & IFF_PROMISC) != 0); |
| if (promisc != priv->promisc) { |
| /* This gets called in interrupt, must reschedule */ |
| priv->promisc = promisc; |
| schedule_work(&priv->work_set_promisc); |
| } |
| } |
| |
| /* Stop all network activity, flush all pending tasks */ |
| static void at76_quiesce(struct at76_priv *priv) |
| { |
| unsigned long flags; |
| |
| netif_stop_queue(priv->netdev); |
| netif_carrier_off(priv->netdev); |
| |
| at76_set_mac_state(priv, MAC_INIT); |
| |
| cancel_delayed_work(&priv->dwork_get_scan); |
| cancel_delayed_work(&priv->dwork_beacon); |
| cancel_delayed_work(&priv->dwork_auth); |
| cancel_delayed_work(&priv->dwork_assoc); |
| cancel_delayed_work(&priv->dwork_restart); |
| |
| spin_lock_irqsave(&priv->mgmt_spinlock, flags); |
| kfree(priv->next_mgmt_bulk); |
| priv->next_mgmt_bulk = NULL; |
| spin_unlock_irqrestore(&priv->mgmt_spinlock, flags); |
| } |
| |
| /******************************************************************************* |
| * at76_priv implementations of iw_handler functions: |
| */ |
| static int at76_iw_handler_commit(struct net_device *netdev, |
| struct iw_request_info *info, |
| void *null, char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| |
| at76_dbg(DBG_IOCTL, "%s %s: restarting the device", netdev->name, |
| __func__); |
| |
| if (priv->mac_state != MAC_INIT) |
| at76_quiesce(priv); |
| |
| /* Wait half second before the restart to process subsequent |
| * requests from the same iwconfig in a single restart */ |
| schedule_delayed_work(&priv->dwork_restart, HZ / 2); |
| |
| return 0; |
| } |
| |
| static int at76_iw_handler_get_name(struct net_device *netdev, |
| struct iw_request_info *info, |
| char *name, char *extra) |
| { |
| strcpy(name, "IEEE 802.11b"); |
| at76_dbg(DBG_IOCTL, "%s: SIOCGIWNAME - name %s", netdev->name, name); |
| return 0; |
| } |
| |
| static int at76_iw_handler_set_freq(struct net_device *netdev, |
| struct iw_request_info *info, |
| struct iw_freq *freq, char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| int chan = -1; |
| int ret = -EIWCOMMIT; |
| at76_dbg(DBG_IOCTL, "%s: SIOCSIWFREQ - freq.m %d freq.e %d", |
| netdev->name, freq->m, freq->e); |
| |
| if ((freq->e == 0) && (freq->m <= 1000)) |
| /* Setting by channel number */ |
| chan = freq->m; |
| else { |
| /* Setting by frequency - search the table */ |
| int mult = 1; |
| int i; |
| |
| for (i = 0; i < (6 - freq->e); i++) |
| mult *= 10; |
| |
| for (i = 0; i < NUM_CHANNELS; i++) { |
| if (freq->m == (channel_frequency[i] * mult)) |
| chan = i + 1; |
| } |
| } |
| |
| if (chan < 1 || !priv->domain) |
| /* non-positive channels are invalid |
| * we need a domain info to set the channel |
| * either that or an invalid frequency was |
| * provided by the user */ |
| ret = -EINVAL; |
| else if (!(priv->domain->channel_map & (1 << (chan - 1)))) { |
| printk(KERN_INFO "%s: channel %d not allowed for domain %s\n", |
| priv->netdev->name, chan, priv->domain->name); |
| ret = -EINVAL; |
| } |
| |
| if (ret == -EIWCOMMIT) { |
| priv->channel = chan; |
| at76_dbg(DBG_IOCTL, "%s: SIOCSIWFREQ - ch %d", netdev->name, |
| chan); |
| } |
| |
| return ret; |
| } |
| |
| static int at76_iw_handler_get_freq(struct net_device *netdev, |
| struct iw_request_info *info, |
| struct iw_freq *freq, char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| |
| freq->m = priv->channel; |
| freq->e = 0; |
| |
| if (priv->channel) |
| at76_dbg(DBG_IOCTL, "%s: SIOCGIWFREQ - freq %ld x 10e%d", |
| netdev->name, channel_frequency[priv->channel - 1], 6); |
| |
| at76_dbg(DBG_IOCTL, "%s: SIOCGIWFREQ - ch %d", netdev->name, |
| priv->channel); |
| |
| return 0; |
| } |
| |
| static int at76_iw_handler_set_mode(struct net_device *netdev, |
| struct iw_request_info *info, |
| __u32 *mode, char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| |
| at76_dbg(DBG_IOCTL, "%s: SIOCSIWMODE - %d", netdev->name, *mode); |
| |
| if ((*mode != IW_MODE_ADHOC) && (*mode != IW_MODE_INFRA) && |
| (*mode != IW_MODE_MONITOR)) |
| return -EINVAL; |
| |
| priv->iw_mode = *mode; |
| if (priv->iw_mode != IW_MODE_INFRA) |
| priv->pm_mode = AT76_PM_OFF; |
| |
| return -EIWCOMMIT; |
| } |
| |
| static int at76_iw_handler_get_mode(struct net_device *netdev, |
| struct iw_request_info *info, |
| __u32 *mode, char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| |
| *mode = priv->iw_mode; |
| |
| at76_dbg(DBG_IOCTL, "%s: SIOCGIWMODE - %d", netdev->name, *mode); |
| |
| return 0; |
| } |
| |
| static int at76_iw_handler_get_range(struct net_device *netdev, |
| struct iw_request_info *info, |
| struct iw_point *data, char *extra) |
| { |
| /* inspired by atmel.c */ |
| struct at76_priv *priv = netdev_priv(netdev); |
| struct iw_range *range = (struct iw_range *)extra; |
| int i; |
| |
| data->length = sizeof(struct iw_range); |
| memset(range, 0, sizeof(struct iw_range)); |
| |
| /* TODO: range->throughput = xxxxxx; */ |
| |
| range->min_nwid = 0x0000; |
| range->max_nwid = 0x0000; |
| |
| /* this driver doesn't maintain sensitivity information */ |
| range->sensitivity = 0; |
| |
| range->max_qual.qual = 100; |
| range->max_qual.level = 100; |
| range->max_qual.noise = 0; |
| range->max_qual.updated = IW_QUAL_NOISE_INVALID; |
| |
| range->avg_qual.qual = 50; |
| range->avg_qual.level = 50; |
| range->avg_qual.noise = 0; |
| range->avg_qual.updated = IW_QUAL_NOISE_INVALID; |
| |
| range->bitrate[0] = 1000000; |
| range->bitrate[1] = 2000000; |
| range->bitrate[2] = 5500000; |
| range->bitrate[3] = 11000000; |
| range->num_bitrates = 4; |
| |
| range->min_rts = 0; |
| range->max_rts = MAX_RTS_THRESHOLD; |
| |
| range->min_frag = MIN_FRAG_THRESHOLD; |
| range->max_frag = MAX_FRAG_THRESHOLD; |
| |
| range->pmp_flags = IW_POWER_PERIOD; |
| range->pmt_flags = IW_POWER_ON; |
| range->pm_capa = IW_POWER_PERIOD | IW_POWER_ALL_R; |
| |
| range->encoding_size[0] = WEP_SMALL_KEY_LEN; |
| range->encoding_size[1] = WEP_LARGE_KEY_LEN; |
| range->num_encoding_sizes = 2; |
| range->max_encoding_tokens = WEP_KEYS; |
| |
| /* both WL-240U and Linksys WUSB11 v2.6 specify 15 dBm as output power |
| - take this for all (ignore antenna gains) */ |
| range->txpower[0] = 15; |
| range->num_txpower = 1; |
| range->txpower_capa = IW_TXPOW_DBM; |
| |
| range->we_version_source = WIRELESS_EXT; |
| range->we_version_compiled = WIRELESS_EXT; |
| |
| /* same as the values used in atmel.c */ |
| range->retry_capa = IW_RETRY_LIMIT; |
| range->retry_flags = IW_RETRY_LIMIT; |
| range->r_time_flags = 0; |
| range->min_retry = 1; |
| range->max_retry = 255; |
| |
| range->num_channels = NUM_CHANNELS; |
| range->num_frequency = 0; |
| |
| for (i = 0; i < NUM_CHANNELS; i++) { |
| /* test if channel map bit is raised */ |
| if (priv->domain->channel_map & (0x1 << i)) { |
| range->num_frequency += 1; |
| |
| range->freq[i].i = i + 1; |
| range->freq[i].m = channel_frequency[i] * 100000; |
| range->freq[i].e = 1; /* freq * 10^1 */ |
| } |
| } |
| |
| at76_dbg(DBG_IOCTL, "%s: SIOCGIWRANGE", netdev->name); |
| |
| return 0; |
| } |
| |
| static int at76_iw_handler_set_spy(struct net_device *netdev, |
| struct iw_request_info *info, |
| struct iw_point *data, char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| int ret = 0; |
| |
| at76_dbg(DBG_IOCTL, "%s: SIOCSIWSPY - number of addresses %d", |
| netdev->name, data->length); |
| |
| spin_lock_bh(&priv->spy_spinlock); |
| ret = iw_handler_set_spy(priv->netdev, info, (union iwreq_data *)data, |
| extra); |
| spin_unlock_bh(&priv->spy_spinlock); |
| |
| return ret; |
| } |
| |
| static int at76_iw_handler_get_spy(struct net_device *netdev, |
| struct iw_request_info *info, |
| struct iw_point *data, char *extra) |
| { |
| |
| struct at76_priv *priv = netdev_priv(netdev); |
| int ret = 0; |
| |
| spin_lock_bh(&priv->spy_spinlock); |
| ret = iw_handler_get_spy(priv->netdev, info, |
| (union iwreq_data *)data, extra); |
| spin_unlock_bh(&priv->spy_spinlock); |
| |
| at76_dbg(DBG_IOCTL, "%s: SIOCGIWSPY - number of addresses %d", |
| netdev->name, data->length); |
| |
| return ret; |
| } |
| |
| static int at76_iw_handler_set_thrspy(struct net_device *netdev, |
| struct iw_request_info *info, |
| struct iw_point *data, char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| int ret; |
| |
| at76_dbg(DBG_IOCTL, "%s: SIOCSIWTHRSPY - number of addresses %d)", |
| netdev->name, data->length); |
| |
| spin_lock_bh(&priv->spy_spinlock); |
| ret = iw_handler_set_thrspy(netdev, info, (union iwreq_data *)data, |
| extra); |
| spin_unlock_bh(&priv->spy_spinlock); |
| |
| return ret; |
| } |
| |
| static int at76_iw_handler_get_thrspy(struct net_device *netdev, |
| struct iw_request_info *info, |
| struct iw_point *data, char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| int ret; |
| |
| spin_lock_bh(&priv->spy_spinlock); |
| ret = iw_handler_get_thrspy(netdev, info, (union iwreq_data *)data, |
| extra); |
| spin_unlock_bh(&priv->spy_spinlock); |
| |
| at76_dbg(DBG_IOCTL, "%s: SIOCGIWTHRSPY - number of addresses %d)", |
| netdev->name, data->length); |
| |
| return ret; |
| } |
| |
| static int at76_iw_handler_set_wap(struct net_device *netdev, |
| struct iw_request_info *info, |
| struct sockaddr *ap_addr, char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| |
| at76_dbg(DBG_IOCTL, "%s: SIOCSIWAP - wap/bssid %s", netdev->name, |
| mac2str(ap_addr->sa_data)); |
| |
| /* if the incoming address == ff:ff:ff:ff:ff:ff, the user has |
| chosen any or auto AP preference */ |
| if (is_broadcast_ether_addr(ap_addr->sa_data) |
| || is_zero_ether_addr(ap_addr->sa_data)) |
| priv->wanted_bssid_valid = 0; |
| else { |
| /* user wants to set a preferred AP address */ |
| priv->wanted_bssid_valid = 1; |
| memcpy(priv->wanted_bssid, ap_addr->sa_data, ETH_ALEN); |
| } |
| |
| return -EIWCOMMIT; |
| } |
| |
| static int at76_iw_handler_get_wap(struct net_device *netdev, |
| struct iw_request_info *info, |
| struct sockaddr *ap_addr, char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| |
| ap_addr->sa_family = ARPHRD_ETHER; |
| memcpy(ap_addr->sa_data, priv->bssid, ETH_ALEN); |
| |
| at76_dbg(DBG_IOCTL, "%s: SIOCGIWAP - wap/bssid %s", netdev->name, |
| mac2str(ap_addr->sa_data)); |
| |
| return 0; |
| } |
| |
| static int at76_iw_handler_set_scan(struct net_device *netdev, |
| struct iw_request_info *info, |
| union iwreq_data *wrqu, char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| int ret = 0; |
| |
| at76_dbg(DBG_IOCTL, "%s: SIOCSIWSCAN", netdev->name); |
| |
| if (mutex_lock_interruptible(&priv->mtx)) |
| return -EINTR; |
| |
| if (!netif_running(netdev)) { |
| ret = -ENETDOWN; |
| goto exit; |
| } |
| |
| /* jal: we don't allow "iwlist ethX scan" while we are |
| in monitor mode */ |
| if (priv->iw_mode == IW_MODE_MONITOR) { |
| ret = -EBUSY; |
| goto exit; |
| } |
| |
| /* Discard old scan results */ |
| if ((jiffies - priv->last_scan) > (20 * HZ)) |
| priv->scan_state = SCAN_IDLE; |
| priv->last_scan = jiffies; |
| |
| /* Initiate a scan command */ |
| if (priv->scan_state == SCAN_IN_PROGRESS) { |
| ret = -EBUSY; |
| goto exit; |
| } |
| |
| priv->scan_state = SCAN_IN_PROGRESS; |
| |
| at76_quiesce(priv); |
| |
| /* Try to do passive or active scan if WE asks as. */ |
| if (wrqu->data.length |
| && wrqu->data.length == sizeof(struct iw_scan_req)) { |
| struct iw_scan_req *req = (struct iw_scan_req *)extra; |
| |
| if (req->scan_type == IW_SCAN_TYPE_PASSIVE) |
| priv->scan_mode = SCAN_TYPE_PASSIVE; |
| else if (req->scan_type == IW_SCAN_TYPE_ACTIVE) |
| priv->scan_mode = SCAN_TYPE_ACTIVE; |
| |
| /* Sanity check values? */ |
| if (req->min_channel_time > 0) |
| priv->scan_min_time = req->min_channel_time; |
| |
| if (req->max_channel_time > 0) |
| priv->scan_max_time = req->max_channel_time; |
| } |
| |
| /* change to scanning state */ |
| at76_set_mac_state(priv, MAC_SCANNING); |
| schedule_work(&priv->work_start_scan); |
| |
| exit: |
| mutex_unlock(&priv->mtx); |
| return ret; |
| } |
| |
| static int at76_iw_handler_get_scan(struct net_device *netdev, |
| struct iw_request_info *info, |
| struct iw_point *data, char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| unsigned long flags; |
| struct list_head *lptr, *nptr; |
| struct bss_info *curr_bss; |
| struct iw_event *iwe = kmalloc(sizeof(struct iw_event), GFP_KERNEL); |
| char *curr_val, *curr_pos = extra; |
| int i; |
| |
| at76_dbg(DBG_IOCTL, "%s: SIOCGIWSCAN", netdev->name); |
| |
| if (!iwe) |
| return -ENOMEM; |
| |
| if (priv->scan_state != SCAN_COMPLETED) { |
| /* scan not yet finished */ |
| kfree(iwe); |
| return -EAGAIN; |
| } |
| |
| spin_lock_irqsave(&priv->bss_list_spinlock, flags); |
| |
| list_for_each_safe(lptr, nptr, &priv->bss_list) { |
| curr_bss = list_entry(lptr, struct bss_info, list); |
| |
| iwe->cmd = SIOCGIWAP; |
| iwe->u.ap_addr.sa_family = ARPHRD_ETHER; |
| memcpy(iwe->u.ap_addr.sa_data, curr_bss->bssid, 6); |
| curr_pos = iwe_stream_add_event(info, curr_pos, |
| extra + IW_SCAN_MAX_DATA, iwe, |
| IW_EV_ADDR_LEN); |
| |
| iwe->u.data.length = curr_bss->ssid_len; |
| iwe->cmd = SIOCGIWESSID; |
| iwe->u.data.flags = 1; |
| |
| curr_pos = iwe_stream_add_point(info, curr_pos, |
| extra + IW_SCAN_MAX_DATA, iwe, |
| curr_bss->ssid); |
| |
| iwe->cmd = SIOCGIWMODE; |
| iwe->u.mode = (curr_bss->capa & WLAN_CAPABILITY_IBSS) ? |
| IW_MODE_ADHOC : |
| (curr_bss->capa & WLAN_CAPABILITY_ESS) ? |
| IW_MODE_MASTER : IW_MODE_AUTO; |
| /* IW_MODE_AUTO = 0 which I thought is |
| * the most logical value to return in this case */ |
| curr_pos = iwe_stream_add_event(info, curr_pos, |
| extra + IW_SCAN_MAX_DATA, iwe, |
| IW_EV_UINT_LEN); |
| |
| iwe->cmd = SIOCGIWFREQ; |
| iwe->u.freq.m = curr_bss->channel; |
| iwe->u.freq.e = 0; |
| curr_pos = iwe_stream_add_event(info, curr_pos, |
| extra + IW_SCAN_MAX_DATA, iwe, |
| IW_EV_FREQ_LEN); |
| |
| iwe->cmd = SIOCGIWENCODE; |
| if (curr_bss->capa & WLAN_CAPABILITY_PRIVACY) |
| iwe->u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY; |
| else |
| iwe->u.data.flags = IW_ENCODE_DISABLED; |
| |
| iwe->u.data.length = 0; |
| curr_pos = iwe_stream_add_point(info, curr_pos, |
| extra + IW_SCAN_MAX_DATA, iwe, |
| NULL); |
| |
| /* Add quality statistics */ |
| iwe->cmd = IWEVQUAL; |
| iwe->u.qual.noise = 0; |
| iwe->u.qual.updated = |
| IW_QUAL_NOISE_INVALID | IW_QUAL_LEVEL_UPDATED; |
| iwe->u.qual.level = (curr_bss->rssi * 100 / 42); |
| if (iwe->u.qual.level > 100) |
| iwe->u.qual.level = 100; |
| if (at76_is_intersil(priv->board_type)) |
| iwe->u.qual.qual = curr_bss->link_qual; |
| else { |
| iwe->u.qual.qual = 0; |
| iwe->u.qual.updated |= IW_QUAL_QUAL_INVALID; |
| } |
| /* Add new value to event */ |
| curr_pos = iwe_stream_add_event(info, curr_pos, |
| extra + IW_SCAN_MAX_DATA, iwe, |
| IW_EV_QUAL_LEN); |
| |
| /* Rate: stuffing multiple values in a single event requires |
| * a bit more of magic - Jean II */ |
| curr_val = curr_pos + IW_EV_LCP_LEN; |
| |
| iwe->cmd = SIOCGIWRATE; |
| /* Those two flags are ignored... */ |
| iwe->u.bitrate.fixed = 0; |
| iwe->u.bitrate.disabled = 0; |
| /* Max 8 values */ |
| for (i = 0; i < curr_bss->rates_len; i++) { |
| /* Bit rate given in 500 kb/s units (+ 0x80) */ |
| iwe->u.bitrate.value = |
| ((curr_bss->rates[i] & 0x7f) * 500000); |
| /* Add new value to event */ |
| curr_val = iwe_stream_add_value(info, curr_pos, |
| curr_val, |
| extra + |
| IW_SCAN_MAX_DATA, iwe, |
| IW_EV_PARAM_LEN); |
| } |
| |
| /* Check if we added any event */ |
| if ((curr_val - curr_pos) > IW_EV_LCP_LEN) |
| curr_pos = curr_val; |
| |
| /* more information may be sent back using IWECUSTOM */ |
| |
| } |
| |
| spin_unlock_irqrestore(&priv->bss_list_spinlock, flags); |
| |
| data->length = (curr_pos - extra); |
| data->flags = 0; |
| |
| kfree(iwe); |
| return 0; |
| } |
| |
| static int at76_iw_handler_set_essid(struct net_device *netdev, |
| struct iw_request_info *info, |
| struct iw_point *data, char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| |
| at76_dbg(DBG_IOCTL, "%s: SIOCSIWESSID - %s", netdev->name, extra); |
| |
| if (data->flags) { |
| memcpy(priv->essid, extra, data->length); |
| priv->essid_size = data->length; |
| } else |
| priv->essid_size = 0; /* Use any SSID */ |
| |
| return -EIWCOMMIT; |
| } |
| |
| static int at76_iw_handler_get_essid(struct net_device *netdev, |
| struct iw_request_info *info, |
| struct iw_point *data, char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| |
| if (priv->essid_size) { |
| /* not the ANY ssid in priv->essid */ |
| data->flags = 1; |
| data->length = priv->essid_size; |
| memcpy(extra, priv->essid, data->length); |
| } else { |
| /* the ANY ssid was specified */ |
| if (priv->mac_state == MAC_CONNECTED && priv->curr_bss) { |
| /* report the SSID we have found */ |
| data->flags = 1; |
| data->length = priv->curr_bss->ssid_len; |
| memcpy(extra, priv->curr_bss->ssid, data->length); |
| } else { |
| /* report ANY back */ |
| data->flags = 0; |
| data->length = 0; |
| } |
| } |
| |
| at76_dbg(DBG_IOCTL, "%s: SIOCGIWESSID - %.*s", netdev->name, |
| data->length, extra); |
| |
| return 0; |
| } |
| |
| static int at76_iw_handler_set_rate(struct net_device *netdev, |
| struct iw_request_info *info, |
| struct iw_param *bitrate, char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| int ret = -EIWCOMMIT; |
| |
| at76_dbg(DBG_IOCTL, "%s: SIOCSIWRATE - %d", netdev->name, |
| bitrate->value); |
| |
| switch (bitrate->value) { |
| case -1: |
| priv->txrate = TX_RATE_AUTO; |
| break; /* auto rate */ |
| case 1000000: |
| priv->txrate = TX_RATE_1MBIT; |
| break; |
| case 2000000: |
| priv->txrate = TX_RATE_2MBIT; |
| break; |
| case 5500000: |
| priv->txrate = TX_RATE_5_5MBIT; |
| break; |
| case 11000000: |
| priv->txrate = TX_RATE_11MBIT; |
| break; |
| default: |
| ret = -EINVAL; |
| } |
| |
| return ret; |
| } |
| |
| static int at76_iw_handler_get_rate(struct net_device *netdev, |
| struct iw_request_info *info, |
| struct iw_param *bitrate, char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| int ret = 0; |
| |
| switch (priv->txrate) { |
| /* return max rate if RATE_AUTO */ |
| case TX_RATE_AUTO: |
| bitrate->value = 11000000; |
| break; |
| case TX_RATE_1MBIT: |
| bitrate->value = 1000000; |
| break; |
| case TX_RATE_2MBIT: |
| bitrate->value = 2000000; |
| break; |
| case TX_RATE_5_5MBIT: |
| bitrate->value = 5500000; |
| break; |
| case TX_RATE_11MBIT: |
| bitrate->value = 11000000; |
| break; |
| default: |
| ret = -EINVAL; |
| } |
| |
| bitrate->fixed = (priv->txrate != TX_RATE_AUTO); |
| bitrate->disabled = 0; |
| |
| at76_dbg(DBG_IOCTL, "%s: SIOCGIWRATE - %d", netdev->name, |
| bitrate->value); |
| |
| return ret; |
| } |
| |
| static int at76_iw_handler_set_rts(struct net_device *netdev, |
| struct iw_request_info *info, |
| struct iw_param *rts, char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| int ret = -EIWCOMMIT; |
| int rthr = rts->value; |
| |
| at76_dbg(DBG_IOCTL, "%s: SIOCSIWRTS - value %d disabled %s", |
| netdev->name, rts->value, (rts->disabled) ? "true" : "false"); |
| |
| if (rts->disabled) |
| rthr = MAX_RTS_THRESHOLD; |
| |
| if ((rthr < 0) || (rthr > MAX_RTS_THRESHOLD)) |
| ret = -EINVAL; |
| else |
| priv->rts_threshold = rthr; |
| |
| return ret; |
| } |
| |
| static int at76_iw_handler_get_rts(struct net_device *netdev, |
| struct iw_request_info *info, |
| struct iw_param *rts, char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| |
| rts->value = priv->rts_threshold; |
| rts->disabled = (rts->value >= MAX_RTS_THRESHOLD); |
| rts->fixed = 1; |
| |
| at76_dbg(DBG_IOCTL, "%s: SIOCGIWRTS - value %d disabled %s", |
| netdev->name, rts->value, (rts->disabled) ? "true" : "false"); |
| |
| return 0; |
| } |
| |
| static int at76_iw_handler_set_frag(struct net_device *netdev, |
| struct iw_request_info *info, |
| struct iw_param *frag, char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| int ret = -EIWCOMMIT; |
| int fthr = frag->value; |
| |
| at76_dbg(DBG_IOCTL, "%s: SIOCSIWFRAG - value %d, disabled %s", |
| netdev->name, frag->value, |
| (frag->disabled) ? "true" : "false"); |
| |
| if (frag->disabled) |
| fthr = MAX_FRAG_THRESHOLD; |
| |
| if ((fthr < MIN_FRAG_THRESHOLD) || (fthr > MAX_FRAG_THRESHOLD)) |
| ret = -EINVAL; |
| else |
| priv->frag_threshold = fthr & ~0x1; /* get an even value */ |
| |
| return ret; |
| } |
| |
| static int at76_iw_handler_get_frag(struct net_device *netdev, |
| struct iw_request_info *info, |
| struct iw_param *frag, char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| |
| frag->value = priv->frag_threshold; |
| frag->disabled = (frag->value >= MAX_FRAG_THRESHOLD); |
| frag->fixed = 1; |
| |
| at76_dbg(DBG_IOCTL, "%s: SIOCGIWFRAG - value %d, disabled %s", |
| netdev->name, frag->value, |
| (frag->disabled) ? "true" : "false"); |
| |
| return 0; |
| } |
| |
| static int at76_iw_handler_get_txpow(struct net_device *netdev, |
| struct iw_request_info *info, |
| struct iw_param *power, char *extra) |
| { |
| power->value = 15; |
| power->fixed = 1; /* No power control */ |
| power->disabled = 0; |
| power->flags = IW_TXPOW_DBM; |
| |
| at76_dbg(DBG_IOCTL, "%s: SIOCGIWTXPOW - txpow %d dBm", netdev->name, |
| power->value); |
| |
| return 0; |
| } |
| |
| /* jal: short retry is handled by the firmware (at least 0.90.x), |
| while long retry is not (?) */ |
| static int at76_iw_handler_set_retry(struct net_device *netdev, |
| struct iw_request_info *info, |
| struct iw_param *retry, char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| int ret = -EIWCOMMIT; |
| |
| at76_dbg(DBG_IOCTL, "%s: SIOCSIWRETRY disabled %d flags 0x%x val %d", |
| netdev->name, retry->disabled, retry->flags, retry->value); |
| |
| if (!retry->disabled && (retry->flags & IW_RETRY_LIMIT)) { |
| if ((retry->flags & IW_RETRY_MIN) || |
| !(retry->flags & IW_RETRY_MAX)) |
| priv->short_retry_limit = retry->value; |
| else |
| ret = -EINVAL; |
| } else |
| ret = -EINVAL; |
| |
| return ret; |
| } |
| |
| /* Adapted (ripped) from atmel.c */ |
| static int at76_iw_handler_get_retry(struct net_device *netdev, |
| struct iw_request_info *info, |
| struct iw_param *retry, char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| |
| at76_dbg(DBG_IOCTL, "%s: SIOCGIWRETRY", netdev->name); |
| |
| retry->disabled = 0; /* Can't be disabled */ |
| retry->flags = IW_RETRY_LIMIT; |
| retry->value = priv->short_retry_limit; |
| |
| return 0; |
| } |
| |
| static int at76_iw_handler_set_encode(struct net_device *netdev, |
| struct iw_request_info *info, |
| struct iw_point *encoding, char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| int index = (encoding->flags & IW_ENCODE_INDEX) - 1; |
| int len = encoding->length; |
| |
| at76_dbg(DBG_IOCTL, "%s: SIOCSIWENCODE - enc.flags %08x " |
| "pointer %p len %d", netdev->name, encoding->flags, |
| encoding->pointer, encoding->length); |
| at76_dbg(DBG_IOCTL, |
| "%s: SIOCSIWENCODE - old wepstate: enabled %s key_id %d " |
| "auth_mode %s", netdev->name, |
| (priv->wep_enabled) ? "true" : "false", priv->wep_key_id, |
| (priv->auth_mode == |
| WLAN_AUTH_SHARED_KEY) ? "restricted" : "open"); |
| |
| /* take the old default key if index is invalid */ |
| if ((index < 0) || (index >= WEP_KEYS)) |
| index = priv->wep_key_id; |
| |
| if (len > 0) { |
| if (len > WEP_LARGE_KEY_LEN) |
| len = WEP_LARGE_KEY_LEN; |
| |
| memset(priv->wep_keys[index], 0, WEP_KEY_LEN); |
| memcpy(priv->wep_keys[index], extra, len); |
| priv->wep_keys_len[index] = (len <= WEP_SMALL_KEY_LEN) ? |
| WEP_SMALL_KEY_LEN : WEP_LARGE_KEY_LEN; |
| priv->wep_enabled = 1; |
| } |
| |
| priv->wep_key_id = index; |
| priv->wep_enabled = ((encoding->flags & IW_ENCODE_DISABLED) == 0); |
| |
| if (encoding->flags & IW_ENCODE_RESTRICTED) |
| priv->auth_mode = WLAN_AUTH_SHARED_KEY; |
| if (encoding->flags & IW_ENCODE_OPEN) |
| priv->auth_mode = WLAN_AUTH_OPEN; |
| |
| at76_dbg(DBG_IOCTL, |
| "%s: SIOCSIWENCODE - new wepstate: enabled %s key_id %d " |
| "key_len %d auth_mode %s", netdev->name, |
| (priv->wep_enabled) ? "true" : "false", priv->wep_key_id + 1, |
| priv->wep_keys_len[priv->wep_key_id], |
| (priv->auth_mode == |
| WLAN_AUTH_SHARED_KEY) ? "restricted" : "open"); |
| |
| return -EIWCOMMIT; |
| } |
| |
| static int at76_iw_handler_get_encode(struct net_device *netdev, |
| struct iw_request_info *info, |
| struct iw_point *encoding, char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| int index = (encoding->flags & IW_ENCODE_INDEX) - 1; |
| |
| if ((index < 0) || (index >= WEP_KEYS)) |
| index = priv->wep_key_id; |
| |
| encoding->flags = |
| (priv->auth_mode == WLAN_AUTH_SHARED_KEY) ? |
| IW_ENCODE_RESTRICTED : IW_ENCODE_OPEN; |
| |
| if (!priv->wep_enabled) |
| encoding->flags |= IW_ENCODE_DISABLED; |
| |
| if (encoding->pointer) { |
| encoding->length = priv->wep_keys_len[index]; |
| |
| memcpy(extra, priv->wep_keys[index], priv->wep_keys_len[index]); |
| |
| encoding->flags |= (index + 1); |
| } |
| |
| at76_dbg(DBG_IOCTL, "%s: SIOCGIWENCODE - enc.flags %08x " |
| "pointer %p len %d", netdev->name, encoding->flags, |
| encoding->pointer, encoding->length); |
| at76_dbg(DBG_IOCTL, |
| "%s: SIOCGIWENCODE - wepstate: enabled %s key_id %d " |
| "key_len %d auth_mode %s", netdev->name, |
| (priv->wep_enabled) ? "true" : "false", priv->wep_key_id + 1, |
| priv->wep_keys_len[priv->wep_key_id], |
| (priv->auth_mode == |
| WLAN_AUTH_SHARED_KEY) ? "restricted" : "open"); |
| |
| return 0; |
| } |
| |
| static int at76_iw_handler_set_power(struct net_device *netdev, |
| struct iw_request_info *info, |
| struct iw_param *prq, char *extra) |
| { |
| int err = -EIWCOMMIT; |
| struct at76_priv *priv = netdev_priv(netdev); |
| |
| at76_dbg(DBG_IOCTL, |
| "%s: SIOCSIWPOWER - disabled %s flags 0x%x value 0x%x", |
| netdev->name, (prq->disabled) ? "true" : "false", prq->flags, |
| prq->value); |
| |
| if (prq->disabled) |
| priv->pm_mode = AT76_PM_OFF; |
| else { |
| switch (prq->flags & IW_POWER_MODE) { |
| case IW_POWER_ALL_R: |
| case IW_POWER_ON: |
| break; |
| default: |
| err = -EINVAL; |
| goto exit; |
| } |
| if (prq->flags & IW_POWER_PERIOD) |
| priv->pm_period = prq->value; |
| |
| if (prq->flags & IW_POWER_TIMEOUT) { |
| err = -EINVAL; |
| goto exit; |
| } |
| priv->pm_mode = AT76_PM_ON; |
| } |
| exit: |
| return err; |
| } |
| |
| static int at76_iw_handler_get_power(struct net_device *netdev, |
| struct iw_request_info *info, |
| struct iw_param *power, char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| |
| power->disabled = (priv->pm_mode == AT76_PM_OFF); |
| if (!power->disabled) { |
| power->flags = IW_POWER_PERIOD | IW_POWER_ALL_R; |
| power->value = priv->pm_period; |
| } |
| |
| at76_dbg(DBG_IOCTL, "%s: SIOCGIWPOWER - %s flags 0x%x value 0x%x", |
| netdev->name, power->disabled ? "disabled" : "enabled", |
| power->flags, power->value); |
| |
| return 0; |
| } |
| |
| /******************************************************************************* |
| * Private IOCTLS |
| */ |
| static int at76_iw_set_short_preamble(struct net_device *netdev, |
| struct iw_request_info *info, char *name, |
| char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| int val = *((int *)name); |
| int ret = -EIWCOMMIT; |
| |
| at76_dbg(DBG_IOCTL, "%s: AT76_SET_SHORT_PREAMBLE, %d", |
| netdev->name, val); |
| |
| if (val < PREAMBLE_TYPE_LONG || val > PREAMBLE_TYPE_AUTO) |
| ret = -EINVAL; |
| else |
| priv->preamble_type = val; |
| |
| return ret; |
| } |
| |
| static int at76_iw_get_short_preamble(struct net_device *netdev, |
| struct iw_request_info *info, |
| union iwreq_data *wrqu, char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| |
| snprintf(wrqu->name, sizeof(wrqu->name), "%s (%d)", |
| preambles[priv->preamble_type], priv->preamble_type); |
| return 0; |
| } |
| |
| static int at76_iw_set_debug(struct net_device *netdev, |
| struct iw_request_info *info, |
| struct iw_point *data, char *extra) |
| { |
| char *ptr; |
| u32 val; |
| |
| if (data->length > 0) { |
| val = simple_strtol(extra, &ptr, 0); |
| |
| if (ptr == extra) |
| val = DBG_DEFAULTS; |
| |
| at76_dbg(DBG_IOCTL, "%s: AT76_SET_DEBUG input %d: %s -> 0x%x", |
| netdev->name, data->length, extra, val); |
| } else |
| val = DBG_DEFAULTS; |
| |
| at76_dbg(DBG_IOCTL, "%s: AT76_SET_DEBUG, old 0x%x, new 0x%x", |
| netdev->name, at76_debug, val); |
| |
| /* jal: some more output to pin down lockups */ |
| at76_dbg(DBG_IOCTL, "%s: netif running %d queue_stopped %d " |
| "carrier_ok %d", netdev->name, netif_running(netdev), |
| netif_queue_stopped(netdev), netif_carrier_ok(netdev)); |
| |
| at76_debug = val; |
| |
| return 0; |
| } |
| |
| static int at76_iw_get_debug(struct net_device *netdev, |
| struct iw_request_info *info, |
| union iwreq_data *wrqu, char *extra) |
| { |
| snprintf(wrqu->name, sizeof(wrqu->name), "0x%08x", at76_debug); |
| return 0; |
| } |
| |
| static int at76_iw_set_powersave_mode(struct net_device *netdev, |
| struct iw_request_info *info, char *name, |
| char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| int val = *((int *)name); |
| int ret = -EIWCOMMIT; |
| |
| at76_dbg(DBG_IOCTL, "%s: AT76_SET_POWERSAVE_MODE, %d (%s)", |
| netdev->name, val, |
| val == AT76_PM_OFF ? "active" : val == AT76_PM_ON ? "save" : |
| val == AT76_PM_SMART ? "smart save" : "<invalid>"); |
| if (val < AT76_PM_OFF || val > AT76_PM_SMART) |
| ret = -EINVAL; |
| else |
| priv->pm_mode = val; |
| |
| return ret; |
| } |
| |
| static int at76_iw_get_powersave_mode(struct net_device *netdev, |
| struct iw_request_info *info, |
| union iwreq_data *wrqu, char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| int *param = (int *)extra; |
| |
| param[0] = priv->pm_mode; |
| return 0; |
| } |
| |
| static int at76_iw_set_scan_times(struct net_device *netdev, |
| struct iw_request_info *info, char *name, |
| char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| int mint = *((int *)name); |
| int maxt = *((int *)name + 1); |
| int ret = -EIWCOMMIT; |
| |
| at76_dbg(DBG_IOCTL, "%s: AT76_SET_SCAN_TIMES - min %d max %d", |
| netdev->name, mint, maxt); |
| if (mint <= 0 || maxt <= 0 || mint > maxt) |
| ret = -EINVAL; |
| else { |
| priv->scan_min_time = mint; |
| priv->scan_max_time = maxt; |
| } |
| |
| return ret; |
| } |
| |
| static int at76_iw_get_scan_times(struct net_device *netdev, |
| struct iw_request_info *info, |
| union iwreq_data *wrqu, char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| int *param = (int *)extra; |
| |
| param[0] = priv->scan_min_time; |
| param[1] = priv->scan_max_time; |
| return 0; |
| } |
| |
| static int at76_iw_set_scan_mode(struct net_device *netdev, |
| struct iw_request_info *info, char *name, |
| char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| int val = *((int *)name); |
| int ret = -EIWCOMMIT; |
| |
| at76_dbg(DBG_IOCTL, "%s: AT76_SET_SCAN_MODE - mode %s", |
| netdev->name, (val = SCAN_TYPE_ACTIVE) ? "active" : |
| (val = SCAN_TYPE_PASSIVE) ? "passive" : "<invalid>"); |
| |
| if (val != SCAN_TYPE_ACTIVE && val != SCAN_TYPE_PASSIVE) |
| ret = -EINVAL; |
| else |
| priv->scan_mode = val; |
| |
| return ret; |
| } |
| |
| static int at76_iw_get_scan_mode(struct net_device *netdev, |
| struct iw_request_info *info, |
| union iwreq_data *wrqu, char *extra) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| int *param = (int *)extra; |
| |
| param[0] = priv->scan_mode; |
| return 0; |
| } |
| |
| #define AT76_SET_HANDLER(h, f) [h - SIOCIWFIRST] = (iw_handler) f |
| |
| /* Standard wireless handlers */ |
| static const iw_handler at76_handlers[] = { |
| AT76_SET_HANDLER(SIOCSIWCOMMIT, at76_iw_handler_commit), |
| AT76_SET_HANDLER(SIOCGIWNAME, at76_iw_handler_get_name), |
| AT76_SET_HANDLER(SIOCSIWFREQ, at76_iw_handler_set_freq), |
| AT76_SET_HANDLER(SIOCGIWFREQ, at76_iw_handler_get_freq), |
| AT76_SET_HANDLER(SIOCSIWMODE, at76_iw_handler_set_mode), |
| AT76_SET_HANDLER(SIOCGIWMODE, at76_iw_handler_get_mode), |
| AT76_SET_HANDLER(SIOCGIWRANGE, at76_iw_handler_get_range), |
| AT76_SET_HANDLER(SIOCSIWSPY, at76_iw_handler_set_spy), |
| AT76_SET_HANDLER(SIOCGIWSPY, at76_iw_handler_get_spy), |
| AT76_SET_HANDLER(SIOCSIWTHRSPY, at76_iw_handler_set_thrspy), |
| AT76_SET_HANDLER(SIOCGIWTHRSPY, at76_iw_handler_get_thrspy), |
| AT76_SET_HANDLER(SIOCSIWAP, at76_iw_handler_set_wap), |
| AT76_SET_HANDLER(SIOCGIWAP, at76_iw_handler_get_wap), |
| AT76_SET_HANDLER(SIOCSIWSCAN, at76_iw_handler_set_scan), |
| AT76_SET_HANDLER(SIOCGIWSCAN, at76_iw_handler_get_scan), |
| AT76_SET_HANDLER(SIOCSIWESSID, at76_iw_handler_set_essid), |
| AT76_SET_HANDLER(SIOCGIWESSID, at76_iw_handler_get_essid), |
| AT76_SET_HANDLER(SIOCSIWRATE, at76_iw_handler_set_rate), |
| AT76_SET_HANDLER(SIOCGIWRATE, at76_iw_handler_get_rate), |
| AT76_SET_HANDLER(SIOCSIWRTS, at76_iw_handler_set_rts), |
| AT76_SET_HANDLER(SIOCGIWRTS, at76_iw_handler_get_rts), |
| AT76_SET_HANDLER(SIOCSIWFRAG, at76_iw_handler_set_frag), |
| AT76_SET_HANDLER(SIOCGIWFRAG, at76_iw_handler_get_frag), |
| AT76_SET_HANDLER(SIOCGIWTXPOW, at76_iw_handler_get_txpow), |
| AT76_SET_HANDLER(SIOCSIWRETRY, at76_iw_handler_set_retry), |
| AT76_SET_HANDLER(SIOCGIWRETRY, at76_iw_handler_get_retry), |
| AT76_SET_HANDLER(SIOCSIWENCODE, at76_iw_handler_set_encode), |
| AT76_SET_HANDLER(SIOCGIWENCODE, at76_iw_handler_get_encode), |
| AT76_SET_HANDLER(SIOCSIWPOWER, at76_iw_handler_set_power), |
| AT76_SET_HANDLER(SIOCGIWPOWER, at76_iw_handler_get_power) |
| }; |
| |
| #define AT76_SET_PRIV(h, f) [h - SIOCIWFIRSTPRIV] = (iw_handler) f |
| |
| /* Private wireless handlers */ |
| static const iw_handler at76_priv_handlers[] = { |
| AT76_SET_PRIV(AT76_SET_SHORT_PREAMBLE, at76_iw_set_short_preamble), |
| AT76_SET_PRIV(AT76_GET_SHORT_PREAMBLE, at76_iw_get_short_preamble), |
| AT76_SET_PRIV(AT76_SET_DEBUG, at76_iw_set_debug), |
| AT76_SET_PRIV(AT76_GET_DEBUG, at76_iw_get_debug), |
| AT76_SET_PRIV(AT76_SET_POWERSAVE_MODE, at76_iw_set_powersave_mode), |
| AT76_SET_PRIV(AT76_GET_POWERSAVE_MODE, at76_iw_get_powersave_mode), |
| AT76_SET_PRIV(AT76_SET_SCAN_TIMES, at76_iw_set_scan_times), |
| AT76_SET_PRIV(AT76_GET_SCAN_TIMES, at76_iw_get_scan_times), |
| AT76_SET_PRIV(AT76_SET_SCAN_MODE, at76_iw_set_scan_mode), |
| AT76_SET_PRIV(AT76_GET_SCAN_MODE, at76_iw_get_scan_mode), |
| }; |
| |
| /* Names and arguments of private wireless handlers */ |
| static const struct iw_priv_args at76_priv_args[] = { |
| /* 0 - long, 1 - short */ |
| {AT76_SET_SHORT_PREAMBLE, |
| IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "set_preamble"}, |
| |
| {AT76_GET_SHORT_PREAMBLE, |
| 0, IW_PRIV_TYPE_CHAR | IW_PRIV_SIZE_FIXED | 10, "get_preamble"}, |
| |
| /* we must pass the new debug mask as a string, because iwpriv cannot |
| * parse hex numbers starting with 0x :-( */ |
| {AT76_SET_DEBUG, |
| IW_PRIV_TYPE_CHAR | 10, 0, "set_debug"}, |
| |
| {AT76_GET_DEBUG, |
| 0, IW_PRIV_TYPE_CHAR | IW_PRIV_SIZE_FIXED | 10, "get_debug"}, |
| |
| /* 1 - active, 2 - power save, 3 - smart power save */ |
| {AT76_SET_POWERSAVE_MODE, |
| IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "set_powersave"}, |
| |
| {AT76_GET_POWERSAVE_MODE, |
| 0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "get_powersave"}, |
| |
| /* min_channel_time, max_channel_time */ |
| {AT76_SET_SCAN_TIMES, |
| IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 2, 0, "set_scan_times"}, |
| |
| {AT76_GET_SCAN_TIMES, |
| 0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 2, "get_scan_times"}, |
| |
| /* 0 - active, 1 - passive scan */ |
| {AT76_SET_SCAN_MODE, |
| IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "set_scan_mode"}, |
| |
| {AT76_GET_SCAN_MODE, |
| 0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "get_scan_mode"}, |
| }; |
| |
| static const struct iw_handler_def at76_handler_def = { |
| .num_standard = ARRAY_SIZE(at76_handlers), |
| .num_private = ARRAY_SIZE(at76_priv_handlers), |
| .num_private_args = ARRAY_SIZE(at76_priv_args), |
| .standard = at76_handlers, |
| .private = at76_priv_handlers, |
| .private_args = at76_priv_args, |
| .get_wireless_stats = at76_get_wireless_stats, |
| }; |
| |
| static const u8 snapsig[] = { 0xaa, 0xaa, 0x03 }; |
| |
| /* RFC 1042 encapsulates Ethernet frames in 802.2 SNAP (0xaa, 0xaa, 0x03) with |
| * a SNAP OID of 0 (0x00, 0x00, 0x00) */ |
| static const u8 rfc1042sig[] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; |
| |
| static int at76_tx(struct sk_buff *skb, struct net_device *netdev) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| struct net_device_stats *stats = &priv->stats; |
| int ret = 0; |
| int wlen; |
| int submit_len; |
| struct at76_tx_buffer *tx_buffer = priv->bulk_out_buffer; |
| struct ieee80211_hdr_3addr *i802_11_hdr = |
| (struct ieee80211_hdr_3addr *)tx_buffer->packet; |
| u8 *payload = i802_11_hdr->payload; |
| struct ethhdr *eh = (struct ethhdr *)skb->data; |
| |
| if (netif_queue_stopped(netdev)) { |
| printk(KERN_ERR "%s: %s called while netdev is stopped\n", |
| netdev->name, __func__); |
| /* skip this packet */ |
| dev_kfree_skb(skb); |
| return 0; |
| } |
| |
| if (priv->tx_urb->status == -EINPROGRESS) { |
| printk(KERN_ERR "%s: %s called while tx urb is pending\n", |
| netdev->name, __func__); |
| /* skip this packet */ |
| dev_kfree_skb(skb); |
| return 0; |
| } |
| |
| if (skb->len < ETH_HLEN) { |
| printk(KERN_ERR "%s: %s: skb too short (%d)\n", |
| netdev->name, __func__, skb->len); |
| dev_kfree_skb(skb); |
| return 0; |
| } |
| |
| at76_ledtrig_tx_activity(); /* tell ledtrigger we send a packet */ |
| |
| /* we can get rid of memcpy if we set netdev->hard_header_len to |
| reserve enough space, but we would need to keep the skb around */ |
| |
| if (ntohs(eh->h_proto) <= ETH_DATA_LEN) { |
| /* this is a 802.3 packet */ |
| if (skb->len >= ETH_HLEN + sizeof(rfc1042sig) |
| && skb->data[ETH_HLEN] == rfc1042sig[0] |
| && skb->data[ETH_HLEN + 1] == rfc1042sig[1]) { |
| /* higher layer delivered SNAP header - keep it */ |
| memcpy(payload, skb->data + ETH_HLEN, |
| skb->len - ETH_HLEN); |
| wlen = IEEE80211_3ADDR_LEN + skb->len - ETH_HLEN; |
| } else { |
| printk(KERN_ERR "%s: dropping non-SNAP 802.2 packet " |
| "(DSAP 0x%02x SSAP 0x%02x cntrl 0x%02x)\n", |
| priv->netdev->name, skb->data[ETH_HLEN], |
| skb->data[ETH_HLEN + 1], |
| skb->data[ETH_HLEN + 2]); |
| dev_kfree_skb(skb); |
| return 0; |
| } |
| } else { |
| /* add RFC 1042 header in front */ |
| memcpy(payload, rfc1042sig, sizeof(rfc1042sig)); |
| memcpy(payload + sizeof(rfc1042sig), &eh->h_proto, |
| skb->len - offsetof(struct ethhdr, h_proto)); |
| wlen = IEEE80211_3ADDR_LEN + sizeof(rfc1042sig) + skb->len - |
| offsetof(struct ethhdr, h_proto); |
| } |
| |
| /* make wireless header */ |
| i802_11_hdr->frame_ctl = |
| cpu_to_le16(IEEE80211_FTYPE_DATA | |
| (priv->wep_enabled ? IEEE80211_FCTL_PROTECTED : 0) | |
| (priv->iw_mode == |
| IW_MODE_INFRA ? IEEE80211_FCTL_TODS : 0)); |
| |
| if (priv->iw_mode == IW_MODE_ADHOC) { |
| memcpy(i802_11_hdr->addr1, eh->h_dest, ETH_ALEN); |
| memcpy(i802_11_hdr->addr2, eh->h_source, ETH_ALEN); |
| memcpy(i802_11_hdr->addr3, priv->bssid, ETH_ALEN); |
| } else if (priv->iw_mode == IW_MODE_INFRA) { |
| memcpy(i802_11_hdr->addr1, priv->bssid, ETH_ALEN); |
| memcpy(i802_11_hdr->addr2, eh->h_source, ETH_ALEN); |
| memcpy(i802_11_hdr->addr3, eh->h_dest, ETH_ALEN); |
| } |
| |
| i802_11_hdr->duration_id = cpu_to_le16(0); |
| i802_11_hdr->seq_ctl = cpu_to_le16(0); |
| |
| /* setup 'Atmel' header */ |
| tx_buffer->wlength = cpu_to_le16(wlen); |
| tx_buffer->tx_rate = priv->txrate; |
| /* for broadcast destination addresses, the firmware 0.100.x |
| seems to choose the highest rate set with CMD_STARTUP in |
| basic_rate_set replacing this value */ |
| |
| memset(tx_buffer->reserved, 0, sizeof(tx_buffer->reserved)); |
| |
| tx_buffer->padding = at76_calc_padding(wlen); |
| submit_len = wlen + AT76_TX_HDRLEN + tx_buffer->padding; |
| |
| at76_dbg(DBG_TX_DATA_CONTENT, "%s skb->data %s", priv->netdev->name, |
| hex2str(skb->data, 32)); |
| at76_dbg(DBG_TX_DATA, "%s tx: wlen 0x%x pad 0x%x rate %d hdr %s", |
| priv->netdev->name, |
| le16_to_cpu(tx_buffer->wlength), |
| tx_buffer->padding, tx_buffer->tx_rate, |
| hex2str(i802_11_hdr, sizeof(*i802_11_hdr))); |
| at76_dbg(DBG_TX_DATA_CONTENT, "%s payload %s", priv->netdev->name, |
| hex2str(payload, 48)); |
| |
| /* send stuff */ |
| netif_stop_queue(netdev); |
| netdev->trans_start = jiffies; |
| |
| usb_fill_bulk_urb(priv->tx_urb, priv->udev, priv->tx_pipe, tx_buffer, |
| submit_len, at76_tx_callback, priv); |
| ret = usb_submit_urb(priv->tx_urb, GFP_ATOMIC); |
| if (ret) { |
| stats->tx_errors++; |
| printk(KERN_ERR "%s: error in tx submit urb: %d\n", |
| netdev->name, ret); |
| if (ret == -EINVAL) |
| printk(KERN_ERR |
| "%s: -EINVAL: tx urb %p hcpriv %p complete %p\n", |
| priv->netdev->name, priv->tx_urb, |
| priv->tx_urb->hcpriv, priv->tx_urb->complete); |
| } else { |
| stats->tx_bytes += skb->len; |
| dev_kfree_skb(skb); |
| } |
| |
| return ret; |
| } |
| |
| static void at76_tx_timeout(struct net_device *netdev) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| |
| if (!priv) |
| return; |
| dev_warn(&netdev->dev, "tx timeout."); |
| |
| usb_unlink_urb(priv->tx_urb); |
| priv->stats.tx_errors++; |
| } |
| |
| static int at76_submit_rx_urb(struct at76_priv *priv) |
| { |
| int ret; |
| int size; |
| struct sk_buff *skb = priv->rx_skb; |
| |
| if (!priv->rx_urb) { |
| printk(KERN_ERR "%s: %s: priv->rx_urb is NULL\n", |
| priv->netdev->name, __func__); |
| return -EFAULT; |
| } |
| |
| if (!skb) { |
| skb = dev_alloc_skb(sizeof(struct at76_rx_buffer)); |
| if (!skb) { |
| printk(KERN_ERR "%s: cannot allocate rx skbuff\n", |
| priv->netdev->name); |
| ret = -ENOMEM; |
| goto exit; |
| } |
| priv->rx_skb = skb; |
| } else { |
| skb_push(skb, skb_headroom(skb)); |
| skb_trim(skb, 0); |
| } |
| |
| size = skb_tailroom(skb); |
| usb_fill_bulk_urb(priv->rx_urb, priv->udev, priv->rx_pipe, |
| skb_put(skb, size), size, at76_rx_callback, priv); |
| ret = usb_submit_urb(priv->rx_urb, GFP_ATOMIC); |
| if (ret < 0) { |
| if (ret == -ENODEV) |
| at76_dbg(DBG_DEVSTART, |
| "usb_submit_urb returned -ENODEV"); |
| else |
| printk(KERN_ERR "%s: rx, usb_submit_urb failed: %d\n", |
| priv->netdev->name, ret); |
| } |
| |
| exit: |
| if (ret < 0 && ret != -ENODEV) |
| printk(KERN_ERR "%s: cannot submit rx urb - please unload the " |
| "driver and/or power cycle the device\n", |
| priv->netdev->name); |
| |
| return ret; |
| } |
| |
| static int at76_open(struct net_device *netdev) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| int ret = 0; |
| |
| at76_dbg(DBG_PROC_ENTRY, "%s(): entry", __func__); |
| |
| if (mutex_lock_interruptible(&priv->mtx)) |
| return -EINTR; |
| |
| /* if netdev->dev_addr != priv->mac_addr we must |
| set the mac address in the device ! */ |
| if (compare_ether_addr(netdev->dev_addr, priv->mac_addr)) { |
| if (at76_add_mac_address(priv, netdev->dev_addr) >= 0) |
| at76_dbg(DBG_PROGRESS, "%s: set new MAC addr %s", |
| netdev->name, mac2str(netdev->dev_addr)); |
| } |
| |
| priv->scan_state = SCAN_IDLE; |
| priv->last_scan = jiffies; |
| |
| ret = at76_submit_rx_urb(priv); |
| if (ret < 0) { |
| printk(KERN_ERR "%s: open: submit_rx_urb failed: %d\n", |
| netdev->name, ret); |
| goto error; |
| } |
| |
| schedule_delayed_work(&priv->dwork_restart, 0); |
| |
| at76_dbg(DBG_PROC_ENTRY, "%s(): end", __func__); |
| error: |
| mutex_unlock(&priv->mtx); |
| return ret < 0 ? ret : 0; |
| } |
| |
| static int at76_stop(struct net_device *netdev) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| |
| at76_dbg(DBG_DEVSTART, "%s: ENTER", __func__); |
| |
| if (mutex_lock_interruptible(&priv->mtx)) |
| return -EINTR; |
| |
| at76_quiesce(priv); |
| |
| if (!priv->device_unplugged) { |
| /* We are called by "ifconfig ethX down", not because the |
| * device is not available anymore. */ |
| at76_set_radio(priv, 0); |
| |
| /* We unlink rx_urb because at76_open() re-submits it. |
| * If unplugged, at76_delete_device() takes care of it. */ |
| usb_kill_urb(priv->rx_urb); |
| } |
| |
| /* free the bss_list */ |
| at76_free_bss_list(priv); |
| |
| mutex_unlock(&priv->mtx); |
| at76_dbg(DBG_DEVSTART, "%s: EXIT", __func__); |
| |
| return 0; |
| } |
| |
| static void at76_ethtool_get_drvinfo(struct net_device *netdev, |
| struct ethtool_drvinfo *info) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| |
| strncpy(info->driver, DRIVER_NAME, sizeof(info->driver)); |
| strncpy(info->version, DRIVER_VERSION, sizeof(info->version)); |
| |
| usb_make_path(priv->udev, info->bus_info, sizeof(info->bus_info)); |
| |
| snprintf(info->fw_version, sizeof(info->fw_version), "%d.%d.%d-%d", |
| priv->fw_version.major, priv->fw_version.minor, |
| priv->fw_version.patch, priv->fw_version.build); |
| } |
| |
| static u32 at76_ethtool_get_link(struct net_device *netdev) |
| { |
| struct at76_priv *priv = netdev_priv(netdev); |
| return priv->mac_state == MAC_CONNECTED; |
| } |
| |
| static struct ethtool_ops at76_ethtool_ops = { |
| .get_drvinfo = at76_ethtool_get_drvinfo, |
| .get_link = at76_ethtool_get_link, |
| }; |
| |
| /* Download external firmware */ |
| static int at76_load_external_fw(struct usb_device *udev, struct fwentry *fwe) |
| { |
| int ret; |
| int op_mode; |
| int blockno = 0; |
| int bsize; |
| u8 *block; |
| u8 *buf = fwe->extfw; |
| int size = fwe->extfw_size; |
| |
| if (!buf || !size) |
| return -ENOENT; |
| |
| op_mode = at76_get_op_mode(udev); |
| at76_dbg(DBG_DEVSTART, "opmode %d", op_mode); |
| |
| if (op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) { |
| dev_printk(KERN_ERR, &udev->dev, "unexpected opmode %d\n", |
| op_mode); |
| return -EINVAL; |
| } |
| |
| block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL); |
| if (!block) |
| return -ENOMEM; |
| |
| at76_dbg(DBG_DEVSTART, "downloading external firmware"); |
| |
| /* for fw >= 0.100, the device needs an extra empty block */ |
| do { |
| bsize = min_t(int, size, FW_BLOCK_SIZE); |
| memcpy(block, buf, bsize); |
| at76_dbg(DBG_DEVSTART, |
| "ext fw, size left = %5d, bsize = %4d, blockno = %2d", |
| size, bsize, blockno); |
| ret = at76_load_ext_fw_block(udev, blockno, block, bsize); |
| if (ret != bsize) { |
| dev_printk(KERN_ERR, &udev->dev, |
| "loading %dth firmware block failed: %d\n", |
| blockno, ret); |
| goto exit; |
| } |
| buf += bsize; |
| size -= bsize; |
| blockno++; |
| } while (bsize > 0); |
| |
| if (at76_is_505a(fwe->board_type)) { |
| at76_dbg(DBG_DEVSTART, "200 ms delay for 505a"); |
| schedule_timeout_interruptible(HZ / 5 + 1); |
| } |
| |
| exit: |
| kfree(block); |
| if (ret < 0) |
| dev_printk(KERN_ERR, &udev->dev, |
| "downloading external firmware failed: %d\n", ret); |
| return ret; |
| } |
| |
| /* Download internal firmware */ |
| static int at76_load_internal_fw(struct usb_device *udev, struct fwentry *fwe) |
| { |
| int ret; |
| int need_remap = !at76_is_505a(fwe->board_type); |
| |
| ret = at76_usbdfu_download(udev, fwe->intfw, fwe->intfw_size, |
| need_remap ? 0 : 2 * HZ); |
| |
| if (ret < 0) { |
| dev_printk(KERN_ERR, &udev->dev, |
| "downloading internal fw failed with %d\n", ret); |
| goto exit; |
| } |
| |
| at76_dbg(DBG_DEVSTART, "sending REMAP"); |
| |
| /* no REMAP for 505A (see SF driver) */ |
| if (need_remap) { |
| ret = at76_remap(udev); |
| if (ret < 0) { |
| dev_printk(KERN_ERR, &udev->dev, |
| "sending REMAP failed with %d\n", ret); |
| goto exit; |
| } |
| } |
| |
| at76_dbg(DBG_DEVSTART, "sleeping for 2 seconds"); |
| schedule_timeout_interruptible(2 * HZ + 1); |
| usb_reset_device(udev); |
| |
| exit: |
| return ret; |
| } |
| |
| static int at76_match_essid(struct at76_priv *priv, struct bss_info *ptr) |
| { |
| /* common criteria for both modi */ |
| |
| int ret = (priv->essid_size == 0 /* ANY ssid */ || |
| (priv->essid_size == ptr->ssid_len && |
| !memcmp(priv->essid, ptr->ssid, ptr->ssid_len))); |
| if (!ret) |
| at76_dbg(DBG_BSS_MATCH, |
| "%s bss table entry %p: essid didn't match", |
| priv->netdev->name, ptr); |
| return ret; |
| } |
| |
| static inline int at76_match_mode(struct at76_priv *priv, struct bss_info *ptr) |
| { |
| int ret; |
| |
| if (priv->iw_mode == IW_MODE_ADHOC) |
| ret = ptr->capa & WLAN_CAPABILITY_IBSS; |
| else |
| ret = ptr->capa & WLAN_CAPABILITY_ESS; |
| if (!ret) |
| at76_dbg(DBG_BSS_MATCH, |
| "%s bss table entry %p: mode didn't match", |
| priv->netdev->name, ptr); |
| return ret; |
| } |
| |
| static int at76_match_rates(struct at76_priv *priv, struct bss_info *ptr) |
| { |
| int i; |
| |
| for (i = 0; i < ptr->rates_len; i++) { |
| u8 rate = ptr->rates[i]; |
| |
| if (!(rate & 0x80)) |
| continue; |
| |
| /* this is a basic rate we have to support |
| (see IEEE802.11, ch. 7.3.2.2) */ |
| if (rate != (0x80 | hw_rates[0]) |
| && rate != (0x80 | hw_rates[1]) |
| && rate != (0x80 | hw_rates[2]) |
| && rate != (0x80 | hw_rates[3])) { |
| at76_dbg(DBG_BSS_MATCH, |
| "%s: bss table entry %p: basic rate %02x not " |
| "supported", priv->netdev->name, ptr, rate); |
| return 0; |
| } |
| } |
| |
| /* if we use short preamble, the bss must support it */ |
| if (priv->preamble_type == PREAMBLE_TYPE_SHORT && |
| !(ptr->capa & WLAN_CAPABILITY_SHORT_PREAMBLE)) { |
| at76_dbg(DBG_BSS_MATCH, |
| "%s: %p does not support short preamble", |
| priv->netdev->name, ptr); |
| return 0; |
| } else |
| return 1; |
| } |
| |
| static inline int at76_match_wep(struct at76_priv *priv, struct bss_info *ptr) |
| { |
| if (!priv->wep_enabled && ptr->capa & WLAN_CAPABILITY_PRIVACY) { |
| /* we have disabled WEP, but the BSS signals privacy */ |
| at76_dbg(DBG_BSS_MATCH, |
| "%s: bss table entry %p: requires encryption", |
| priv->netdev->name, ptr); |
| return 0; |
| } |
| /* otherwise if the BSS does not signal privacy it may well |
| accept encrypted packets from us ... */ |
| return 1; |
| } |
| |
| static inline int at76_match_bssid(struct at76_priv *priv, struct bss_info *ptr) |
| { |
| if (!priv->wanted_bssid_valid || |
| !compare_ether_addr(ptr->bssid, priv->wanted_bssid)) |
| return 1; |
| |
| at76_dbg(DBG_BSS_MATCH, |
| "%s: requested bssid - %s does not match", |
| priv->netdev->name, mac2str(priv->wanted_bssid)); |
| at76_dbg(DBG_BSS_MATCH, |
| " AP bssid - %s of bss table entry %p", |
| mac2str(ptr->bssid), ptr); |
| return 0; |
| } |
| |
| /** |
| * at76_match_bss - try to find a matching bss in priv->bss |
| * |
| * last - last bss tried |
| * |
| * last == NULL signals a new round starting with priv->bss_list.next |
| * this function must be called inside an acquired priv->bss_list_spinlock |
| * otherwise the timeout on bss may remove the newly chosen entry |
| */ |
| static struct bss_info *at76_match_bss(struct at76_priv *priv, |
| struct bss_info *last) |
| { |
| struct bss_info *ptr = NULL; |
| struct list_head *curr; |
| |
| curr = last ? last->list.next : priv->bss_list.next; |
| while (curr != &priv->bss_list) { |
| ptr = list_entry(curr, struct bss_info, list); |
| if (at76_match_essid(priv, ptr) && at76_match_mode(priv, ptr) |
| && at76_match_wep(priv, ptr) && at76_match_rates(priv, ptr) |
| && at76_match_bssid(priv, ptr)) |
| break; |
| curr = curr->next; |
| } |
| |
| if (curr == &priv->bss_list) |
| ptr = NULL; |
| /* otherwise ptr points to the struct bss_info we have chosen */ |
| |
| at76_dbg(DBG_BSS_TABLE, "%s %s: returned %p", priv->netdev->name, |
| __func__, ptr); |
| return ptr; |
| } |
| |
| /* Start joining a matching BSS, or create own IBSS */ |
| static void at76_work_join(struct work_struct *work) |
| { |
| struct at76_priv *priv = container_of(work, struct at76_priv, |
| work_join); |
| int ret; |
| unsigned long flags; |
| |
| mutex_lock(&priv->mtx); |
| |
| WARN_ON(priv->mac_state != MAC_JOINING); |
| if (priv->mac_state != MAC_JOINING) |
| goto exit; |
| |
| /* secure the access to priv->curr_bss ! */ |
| spin_lock_irqsave(&priv->bss_list_spinlock, flags); |
| priv->curr_bss = at76_match_bss(priv, priv->curr_bss); |
| spin_unlock_irqrestore(&priv->bss_list_spinlock, flags); |
| |
| if (!priv->curr_bss) { |
| /* here we haven't found a matching (i)bss ... */ |
| if (priv->iw_mode == IW_MODE_ADHOC) { |
| at76_set_mac_state(priv, MAC_OWN_IBSS); |
| at76_start_ibss(priv); |
| goto exit; |
| } |
| /* haven't found a matching BSS in infra mode - try again */ |
| at76_set_mac_state(priv, MAC_SCANNING); |
| schedule_work(&priv->work_start_scan); |
| goto exit; |
| } |
| |
| ret = at76_join_bss(priv, priv->curr_bss); |
| if (ret < 0) { |
| printk(KERN_ERR "%s: join_bss failed with %d\n", |
| priv->netdev->name, ret); |
| goto exit; |
| } |
| |
| ret = at76_wait_completion(priv, CMD_JOIN); |
| if (ret != CMD_STATUS_COMPLETE) { |
| if (ret != CMD_STATUS_TIME_OUT) |
| printk(KERN_ERR "%s: join_bss completed with %d\n", |
| priv->netdev->name, ret); |
| else |
| printk(KERN_INFO "%s: join_bss ssid %s timed out\n", |
| priv->netdev->name, |
| mac2str(priv->curr_bss->bssid)); |
| |
| /* retry next BSS immediately */ |
| schedule_work(&priv->work_join); |
| goto exit; |
| } |
| |
| /* here we have joined the (I)BSS */ |
| if (priv->iw_mode == IW_MODE_ADHOC) { |
| struct bss_info *bptr = priv->curr_bss; |
| at76_set_mac_state(priv, MAC_CONNECTED); |
| /* get ESSID, BSSID and channel for priv->curr_bss */ |
| priv->essid_size = bptr->ssid_len; |
| memcpy(priv->essid, bptr->ssid, bptr->ssid_len); |
| memcpy(priv->bssid, bptr->bssid, ETH_ALEN); |
| priv->channel = bptr->channel; |
| at76_iwevent_bss_connect(priv->netdev, bptr->bssid); |
| netif_carrier_on(priv->netdev); |
| netif_start_queue(priv->netdev); |
| /* just to be sure */ |
| cancel_delayed_work(&priv->dwork_get_scan); |
| cancel_delayed_work(&priv->dwork_auth); |
| cancel_delayed_work(&priv->dwork_assoc); |
| } else { |
| /* send auth req */ |
| priv->retries = AUTH_RETRIES; |
| at76_set_mac_state(priv, MAC_AUTH); |
| at76_auth_req(priv, priv->curr_bss, 1, NULL); |
| at76_dbg(DBG_MGMT_TIMER, |
| "%s:%d: starting mgmt_timer + HZ", __func__, __LINE__); |
| schedule_delayed_work(&priv->dwork_auth, AUTH_TIMEOUT); |
| } |
| |
| exit: |
| mutex_unlock(&priv->mtx); |
| } |
| |
| /* Reap scan results */ |
| static void at76_dwork_get_scan(struct work_struct *work) |
| { |
| int status; |
| int ret; |
| struct at76_priv *priv = container_of(work, struct at76_priv, |
| dwork_get_scan.work); |
| |
| mutex_lock(&priv->mtx); |
| WARN_ON(priv->mac_state != MAC_SCANNING); |
| if (priv->mac_state != MAC_SCANNING) |
| goto exit; |
| |
| status = at76_get_cmd_status(priv->udev, CMD_SCAN); |
| if (status < 0) { |
| printk(KERN_ERR "%s: %s: at76_get_cmd_status failed with %d\n", |
| priv->netdev->name, __func__, status); |
| status = CMD_STATUS_IN_PROGRESS; |
| /* INFO: Hope it was a one off error - if not, scanning |
| further down the line and stop this cycle */ |
| } |
| at76_dbg(DBG_PROGRESS, |
| "%s %s: got cmd_status %d (state %s, need_any %d)", |
| priv->netdev->name, __func__, status, |
| mac_states[priv->mac_state], priv->scan_need_any); |
| |
| if (status != CMD_STATUS_COMPLETE) { |
| if ((status != CMD_STATUS_IN_PROGRESS) && |
| (status != CMD_STATUS_IDLE)) |
| printk(KERN_ERR "%s: %s: Bad scan status: %s\n", |
| priv->netdev->name, __func__, |
| at76_get_cmd_status_string(status)); |
| |
| /* the first cmd status after scan start is always a IDLE -> |
| start the timer to poll again until COMPLETED */ |
| at76_dbg(DBG_MGMT_TIMER, |
| "%s:%d: starting mgmt_timer for %d ticks", |
| __func__, __LINE__, SCAN_POLL_INTERVAL); |
| schedule_delayed_work(&priv->dwork_get_scan, |
| SCAN_POLL_INTERVAL); |
| goto exit; |
| } |
| |
| if (at76_debug & DBG_BSS_TABLE) |
| at76_dump_bss_table(priv); |
| |
| if (priv->scan_need_any) { |
| ret = at76_start_scan(priv, 0); |
| if (ret < 0) |
| printk(KERN_ERR |
| "%s: %s: start_scan (ANY) failed with %d\n", |
| priv->netdev->name, __func__, ret); |
| at76_dbg(DBG_MGMT_TIMER, |
| "%s:%d: starting mgmt_timer for %d ticks", __func__, |
| __LINE__, SCAN_POLL_INTERVAL); |
| schedule_delayed_work(&priv->dwork_get_scan, |
| SCAN_POLL_INTERVAL); |
| priv->scan_need_any = 0; |
| } else { |
| priv->scan_state = SCAN_COMPLETED; |
| /* report the end of scan to user space */ |
| at76_iwevent_scan_complete(priv->netdev); |
| at76_set_mac_state(priv, MAC_JOINING); |
| schedule_work(&priv->work_join); |
| } |
| |
| exit: |
| mutex_unlock(&priv->mtx); |
| } |
| |
| /* Handle loss of beacons from the AP */ |
| static void at76_dwork_beacon(struct work_struct *work) |
| { |
| struct at76_priv *priv = container_of(work, struct at76_priv, |
| dwork_beacon.work); |
| |
| mutex_lock(&priv->mtx); |
| if (priv->mac_state != MAC_CONNECTED || priv->iw_mode != IW_MODE_INFRA) |
| goto exit; |
| |
| /* We haven't received any beacons from out AP for BEACON_TIMEOUT */ |
| printk(KERN_INFO "%s: lost beacon bssid %s\n", |
| priv->netdev->name, mac2str(priv->curr_bss->bssid)); |
| |
| netif_carrier_off(priv->netdev); |
| netif_stop_queue(priv->netdev); |
| at76_iwevent_bss_disconnect(priv->netdev); |
| at76_set_mac_state(priv, MAC_SCANNING); |
| schedule_work(&priv->work_start_scan); |
| |
| exit: |
| mutex_unlock(&priv->mtx); |
| } |
| |
| /* Handle authentication response timeout */ |
| static void at76_dwork_auth(struct work_struct *work) |
| { |
| struct at76_priv *priv = container_of(work, struct at76_priv, |
| dwork_auth.work); |
| |
| mutex_lock(&priv->mtx); |
| WARN_ON(priv->mac_state != MAC_AUTH); |
| if (priv->mac_state != MAC_AUTH) |
| goto exit; |
| |
| at76_dbg(DBG_PROGRESS, "%s: authentication response timeout", |
| priv->netdev->name); |
| |
| if (priv->retries-- >= 0) { |
| at76_auth_req(priv, priv->curr_bss, 1, NULL); |
| at76_dbg(DBG_MGMT_TIMER, "%s:%d: starting mgmt_timer + HZ", |
| __func__, __LINE__); |
| schedule_delayed_work(&priv->dwork_auth, AUTH_TIMEOUT); |
| } else { |
| /* try to get next matching BSS */ |
| at76_set_mac_state(priv, MAC_JOINING); |
| schedule_work(&priv->work_join); |
| } |
| |
| exit: |
| mutex_unlock(&priv->mtx); |
| } |
| |
| /* Handle association response timeout */ |
| static void at76_dwork_assoc(struct work_struct *work) |
| { |
| struct at76_priv *priv = container_of(work, struct at76_priv, |
| dwork_assoc.work); |
| |
| mutex_lock(&priv->mtx); |
| WARN_ON(priv->mac_state != MAC_ASSOC); |
| if (priv->mac_state != MAC_ASSOC) |
| goto exit; |
| |
| at76_dbg(DBG_PROGRESS, "%s: association response timeout", |
| priv->netdev->name); |
| |
| if (priv->retries-- >= 0) { |
| at76_assoc_req(priv, priv->curr_bss); |
| at76_dbg(DBG_MGMT_TIMER, "%s:%d: starting mgmt_timer + HZ", |
| __func__, __LINE__); |
| schedule_delayed_work(&priv->dwork_assoc, ASSOC_TIMEOUT); |
| } else { |
| /* try to get next matching BSS */ |
| at76_set_mac_state(priv, MAC_JOINING); |
| schedule_work(&priv->work_join); |
| } |
| |
| exit: |
| mutex_unlock(&priv->mtx); |
| } |
| |
| /* Read new bssid in ad-hoc mode */ |
| static void at76_work_new_bss(struct work_struct *work) |
| { |
| struct at76_priv *priv = container_of(work, struct at76_priv, |
| work_new_bss); |
| int ret; |
| struct mib_mac_mgmt mac_mgmt; |
| |
| mutex_lock(&priv->mtx); |
| |
| ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, &mac_mgmt, |
| sizeof(struct mib_mac_mgmt)); |
| if (ret < 0) { |
| printk(KERN_ERR "%s: at76_get_mib failed: %d\n", |
| priv->netdev->name, ret); |
| goto exit; |
| } |
| |
| at76_dbg(DBG_PROGRESS, "ibss_change = 0x%2x", mac_mgmt.ibss_change); |
| memcpy(priv->bssid, mac_mgmt.current_bssid, ETH_ALEN); |
| at76_dbg(DBG_PROGRESS, "using BSSID %s", mac2str(priv->bssid)); |
| |
| at76_iwevent_bss_connect(priv->netdev, priv->bssid); |
| |
| priv->mib_buf.type = MIB_MAC_MGMT; |
| priv->mib_buf.size = 1; |
| priv->mib_buf.index = offsetof(struct mib_mac_mgmt, ibss_change); |
| priv->mib_buf.data.byte = 0; |
| |
| ret = at76_set_mib(priv, &priv->mib_buf); |
| if (ret < 0) |
| printk(KERN_ERR "%s: set_mib (ibss change ok) failed: %d\n", |
| priv->netdev->name, ret); |
| |
| exit: |
| mutex_unlock(&priv->mtx); |
| } |
| |
| static int at76_startup_device(struct at76_priv *priv) |
| { |
| struct at76_card_config *ccfg = &priv->card_config; |
| int ret; |
| |
| at76_dbg(DBG_PARAMS, |
| "%s param: ssid %.*s (%s) mode %s ch %d wep %s key %d " |
| "keylen %d", priv->netdev->name, priv->essid_size, priv->essid, |
| hex2str(priv->essid, IW_ESSID_MAX_SIZE), |
| priv->iw_mode == IW_MODE_ADHOC ? "adhoc" : "infra", |
| priv->channel, priv->wep_enabled ? "enabled" : "disabled", |
| priv->wep_key_id, priv->wep_keys_len[priv->wep_key_id]); |
| at76_dbg(DBG_PARAMS, |
| "%s param: preamble %s rts %d retry %d frag %d " |
| "txrate %s auth_mode %d", priv->netdev->name, |
| preambles[priv->preamble_type], priv->rts_threshold, |
| priv->short_retry_limit, priv->frag_threshold, |
| priv->txrate == TX_RATE_1MBIT ? "1MBit" : priv->txrate == |
| TX_RATE_2MBIT ? "2MBit" : priv->txrate == |
| TX_RATE_5_5MBIT ? "5.5MBit" : priv->txrate == |
| TX_RATE_11MBIT ? "11MBit" : priv->txrate == |
| TX_RATE_AUTO ? "auto" : "<invalid>", priv->auth_mode); |
| at76_dbg(DBG_PARAMS, |
| "%s param: pm_mode %d pm_period %d auth_mode %s " |
| "scan_times %d %d scan_mode %s", |
| priv->netdev->name, priv->pm_mode, priv->pm_period, |
| priv->auth_mode == WLAN_AUTH_OPEN ? "open" : "shared_secret", |
| priv->scan_min_time, priv->scan_max_time, |
| priv->scan_mode == SCAN_TYPE_ACTIVE ? "active" : "passive"); |
| |
| memset(ccfg, 0, sizeof(struct at76_card_config)); |
| ccfg->promiscuous_mode = 0; |
| ccfg->short_retry_limit = priv->short_retry_limit; |
| |
| if (priv->wep_enabled) { |
| if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN) |
| ccfg->encryption_type = 2; |
| else |
| ccfg->encryption_type = 1; |
| |
| /* jal: always exclude unencrypted if WEP is active */ |
| ccfg->exclude_unencrypted = 1; |
| } else { |
| ccfg->exclude_unencrypted = 0; |
| ccfg->encryption_type = 0; |
| } |
| |
| ccfg->rts_threshold = cpu_to_le16(priv->rts_threshold); |
| ccfg->fragmentation_threshold = cpu_to_le16(priv->frag_threshold); |
| |
| memcpy(ccfg->basic_rate_set, hw_rates, 4); |
| /* jal: really needed, we do a set_mib for autorate later ??? */ |
| ccfg->auto_rate_fallback = (priv->txrate == TX_RATE_AUTO ? 1 : 0); |
| ccfg->channel = priv->channel; |
| ccfg->privacy_invoked = priv->wep_enabled; |
| memcpy(ccfg->current_ssid, priv->essid, IW_ESSID_MAX_SIZE); |
| ccfg->ssid_len = priv->essid_size; |
| |
| ccfg->wep_default_key_id = priv->wep_key_id; |
| memcpy(ccfg->wep_default_key_value, priv->wep_keys, 4 * WEP_KEY_LEN); |
| |
| ccfg->short_preamble = priv->preamble_type; |
| ccfg->beacon_period = cpu_to_le16(priv->beacon_period); |
| |
| ret = at76_set_card_command(priv->udev, CMD_STARTUP, &priv->card_config, |
| sizeof(struct at76_card_config)); |
| if (ret < 0) { |
| printk(KERN_ERR "%s: at76_set_card_command failed: %d\n", |
| priv->netdev->name, ret); |
| return ret; |
| } |
| |
| at76_wait_completion(priv, CMD_STARTUP); |
| |
| /* remove BSSID from previous run */ |
| memset(priv->bssid, 0, ETH_ALEN); |
| |
| if (at76_set_radio(priv, 1) == 1) |
| at76_wait_completion(priv, CMD_RADIO_ON); |
| |
| ret = at76_set_preamble(priv, priv->preamble_type); |
| if (ret < 0) |
| return ret; |
| |
| ret = at76_set_frag(priv, priv->frag_threshold); |
| if (ret < 0) |
| return ret; |
| |
| ret = at76_set_rts(priv, priv->rts_threshold); |
| if (ret < 0) |
| return ret; |
| |
| ret = at76_set_autorate_fallback(priv, |
| priv->txrate == TX_RATE_AUTO ? 1 : 0); |
| if (ret < 0) |
| return ret; |
| |
| ret = at76_set_pm_mode(priv); |
| if (ret < 0) |
| return ret; |
| |
| if (at76_debug & DBG_MIB) { |
| at76_dump_mib_mac(priv); |
| at76_dump_mib_mac_addr(priv); |
| at76_dump_mib_mac_mgmt(priv); |
| at76_dump_mib_mac_wep(priv); |
| at76_dump_mib_mdomain(priv); |
| at76_dump_mib_phy(priv); |
| at76_dump_mib_local(priv); |
| } |
| |
| return 0; |
| } |
| |
| /* Restart the interface */ |
| static void at76_dwork_restart(struct work_struct *work) |
| { |
| struct at76_priv *priv = container_of(work, struct at76_priv, |
| dwork_restart.work); |
| |
| mutex_lock(&priv->mtx); |
| |
| netif_carrier_off(priv->netdev); /* stop netdev watchdog */ |
| netif_stop_queue(priv->netdev); /* stop tx data packets */ |
| |
| at76_startup_device(priv); |
| |
| if (priv->iw_mode != IW_MODE_MONITOR) { |
| priv->netdev->type = ARPHRD_ETHER; |
| at76_set_mac_state(priv, MAC_SCANNING); |
| schedule_work(&priv->work_start_scan); |
| } else { |
| priv->netdev->type = ARPHRD_IEEE80211_RADIOTAP; |
| at76_start_monitor(priv); |
| } |
| |
| mutex_unlock(&priv->mtx); |
| } |
| |
| /* Initiate scanning */ |
| static void at76_work_start_scan(struct work_struct *work) |
| { |
| struct at76_priv *priv = container_of(work, struct at76_priv, |
| work_start_scan); |
| int ret; |
| |
| mutex_lock(&priv->mtx); |
| |
| WARN_ON(priv->mac_state != MAC_SCANNING); |
| if (priv->mac_state != MAC_SCANNING) |
| goto exit; |
| |
| /* only clear the bss list when a scan is actively initiated, |
| * otherwise simply rely on at76_bss_list_timeout */ |
| if (priv->scan_state == SCAN_IN_PROGRESS) { |
| at76_free_bss_list(priv); |
| priv->scan_need_any = 1; |
| } else |
| priv->scan_need_any = 0; |
| |
| ret = at76_start_scan(priv, 1); |
| |
| if (ret < 0) |
| printk(KERN_ERR "%s: %s: start_scan failed with %d\n", |
| priv->netdev->name, __func__, ret); |
| else { |
| at76_dbg(DBG_MGMT_TIMER, |
| "%s:%d: starting mgmt_timer for %d ticks", |
| __func__, __LINE__, SCAN_POLL_INTERVAL); |
| schedule_delayed_work(&priv->dwork_get_scan, |
| SCAN_POLL_INTERVAL); |
| } |
| |
| exit: |
| mutex_unlock(&priv->mtx); |
| } |
| |
| /* Enable or disable promiscuous mode */ |
| static void at76_work_set_promisc(struct work_struct *work) |
| { |
| struct at76_priv *priv = container_of(work, struct at76_priv, |
| work_set_promisc); |
| int ret = 0; |
| |
| mutex_lock(&priv->mtx); |
| |
| priv->mib_buf.type = MIB_LOCAL; |
| priv->mib_buf.size = 1; |
| priv->mib_buf.index = offsetof(struct mib_local, promiscuous_mode); |
| priv->mib_buf.data.byte = priv->promisc ? 1 : 0; |
| |
| ret = at76_set_mib(priv, &priv->mib_buf); |
| if (ret < 0) |
| printk(KERN_ERR "%s: set_mib (promiscuous_mode) failed: %d\n", |
| priv->netdev->name, ret); |
| |
| mutex_unlock(&priv->mtx); |
| } |
| |
| /* Submit Rx urb back to the device */ |
| static void at76_work_submit_rx(struct work_struct *work) |
| { |
| struct at76_priv *priv = container_of(work, struct at76_priv, |
| work_submit_rx); |
| |
| mutex_lock(&priv->mtx); |
| at76_submit_rx_urb(priv); |
| mutex_unlock(&priv->mtx); |
| } |
| |
| /* We got an association response */ |
| static void at76_rx_mgmt_assoc(struct at76_priv *priv, |
| struct at76_rx_buffer *buf) |
| { |
| struct ieee80211_assoc_response *resp = |
| (struct ieee80211_assoc_response *)buf->packet; |
| u16 assoc_id = le16_to_cpu(resp->aid); |
| u16 status = le16_to_cpu(resp->status); |
| |
| at76_dbg(DBG_RX_MGMT, "%s: rx AssocResp bssid %s capa 0x%04x status " |
| "0x%04x assoc_id 0x%04x rates %s", priv->netdev->name, |
| mac2str(resp->header.addr3), le16_to_cpu(resp->capability), |
| status, assoc_id, hex2str(resp->info_element->data, |
| resp->info_element->len)); |
| |
| if (priv->mac_state != MAC_ASSOC) { |
| printk(KERN_INFO "%s: AssocResp in state %s ignored\n", |
| priv->netdev->name, mac_states[priv->mac_state]); |
| return; |
| } |
| |
| BUG_ON(!priv->curr_bss); |
| |
| cancel_delayed_work(&priv->dwork_assoc); |
| if (status == WLAN_STATUS_SUCCESS) { |
| struct bss_info *ptr = priv->curr_bss; |
| priv->assoc_id = assoc_id & 0x3fff; |
| /* update iwconfig params */ |
| memcpy(priv->bssid, ptr->bssid, ETH_ALEN); |
| memcpy(priv->essid, ptr->ssid, ptr->ssid_len); |
| priv->essid_size = ptr->ssid_len; |
| priv->channel = ptr->channel; |
| schedule_work(&priv->work_assoc_done); |
| } else { |
| at76_set_mac_state(priv, MAC_JOINING); |
| schedule_work(&priv->work_join); |
| } |
| } |
| |
| /* Process disassociation request from the AP */ |
| static void at76_rx_mgmt_disassoc(struct at76_priv *priv, |
| struct at76_rx_buffer *buf) |
| { |
| struct ieee80211_disassoc *resp = |
| (struct ieee80211_disassoc *)buf->packet; |
| struct ieee80211_hdr_3addr *mgmt = &resp->header; |
| |
| at76_dbg(DBG_RX_MGMT, |
| "%s: rx DisAssoc bssid %s reason 0x%04x destination %s", |
| priv->netdev->name, mac2str(mgmt->addr3), |
| le16_to_cpu(resp->reason), mac2str(mgmt->addr1)); |
| |
| /* We are not connected, ignore */ |
| if (priv->mac_state == MAC_SCANNING || priv->mac_state == MAC_INIT |
| || !priv->curr_bss) |
| return; |
| |
| /* Not our BSSID, ignore */ |
| if (compare_ether_addr(mgmt->addr3, priv->curr_bss->bssid)) |
| return; |
| |
| /* Not for our STA and not broadcast, ignore */ |
| if (compare_ether_addr(priv->netdev->dev_addr, mgmt->addr1) |
| && !is_broadcast_ether_addr(mgmt->addr1)) |
| return; |
| |
| if (priv->mac_state != MAC_ASSOC && priv->mac_state != MAC_CONNECTED |
| && priv->mac_state != MAC_JOINING) { |
| printk(KERN_INFO "%s: DisAssoc in state %s ignored\n", |
| priv->netdev->name, mac_states[priv->mac_state]); |
| return; |
| } |
| |
| if (priv->mac_state == MAC_CONNECTED) { |
| netif_carrier_off(priv->netdev); |
| netif_stop_queue(priv->netdev); |
| at76_iwevent_bss_disconnect(priv->netdev); |
| } |
| cancel_delayed_work(&priv->dwork_get_scan); |
| cancel_delayed_work(&priv->dwork_beacon); |
| cancel_delayed_work(&priv->dwork_auth); |
| cancel_delayed_work(&priv->dwork_assoc); |
| at76_set_mac_state(priv, MAC_JOINING); |
| schedule_work(&priv->work_join); |
| } |
| |
| static void at76_rx_mgmt_auth(struct at76_priv *priv, |
| struct at76_rx_buffer *buf) |
| { |
| struct ieee80211_auth *resp = (struct ieee80211_auth *)buf->packet; |
| struct ieee80211_hdr_3addr *mgmt = &resp->header; |
| int seq_nr = le16_to_cpu(resp->transaction); |
| int alg = le16_to_cpu(resp->algorithm); |
| int status = le16_to_cpu(resp->status); |
| |
| at76_dbg(DBG_RX_MGMT, |
| "%s: rx AuthFrame bssid %s alg %d seq_nr %d status %d " |
| "destination %s", priv->netdev->name, mac2str(mgmt->addr3), |
| alg, seq_nr, status, mac2str(mgmt->addr1)); |
| |
| if (alg == WLAN_AUTH_SHARED_KEY && seq_nr == 2) |
| at76_dbg(DBG_RX_MGMT, "%s: AuthFrame challenge %s ...", |
| priv->netdev->name, hex2str(resp->info_element, 18)); |
| |
| if (priv->mac_state != MAC_AUTH) { |
| printk(KERN_INFO "%s: ignored AuthFrame in state %s\n", |
| priv->netdev->name, mac_states[priv->mac_state]); |
| return; |
| } |
| if (priv->auth_mode != alg) { |
| printk(KERN_INFO "%s: ignored AuthFrame for alg %d\n", |
| priv->netdev->name, alg); |
| return; |
| } |
| |
| BUG_ON(!priv->curr_bss); |
| |
| /* Not our BSSID or not for our STA, ignore */ |
| if (compare_ether_addr(mgmt->addr3, priv->curr_bss->bssid) |
| || compare_ether_addr(priv->netdev->dev_addr, mgmt->addr1)) |
| return; |
| |
| cancel_delayed_work(&priv->dwork_auth); |
| if (status != WLAN_STATUS_SUCCESS) { |
| /* try to join next bss */ |
| at76_set_mac_state(priv, MAC_JOINING); |
| schedule_work(&priv->work_join); |
| return; |
| } |
| |
| if (priv->auth_mode == WLAN_AUTH_OPEN || seq_nr == 4) { |
| priv->retries = ASSOC_RETRIES; |
| at76_set_mac_state(priv, MAC_ASSOC); |
| at76_assoc_req(priv, priv->curr_bss); |
| at76_dbg(DBG_MGMT_TIMER, |
| "%s:%d: starting mgmt_timer + HZ", __func__, __LINE__); |
| schedule_delayed_work(&priv->dwork_assoc, ASSOC_TIMEOUT); |
| return; |
| } |
| |
| WARN_ON(seq_nr != 2); |
| at76_auth_req(priv, priv->curr_bss, seq_nr + 1, resp->info_element); |
| at76_dbg(DBG_MGMT_TIMER, "%s:%d: starting mgmt_timer + HZ", __func__, |
| __LINE__); |
| schedule_delayed_work(&priv->dwork_auth, AUTH_TIMEOUT); |
| } |
| |
| static void at76_rx_mgmt_deauth(struct at76_priv *priv, |
| struct at76_rx_buffer *buf) |
| { |
| struct ieee80211_disassoc *resp = |
| (struct ieee80211_disassoc *)buf->packet; |
| struct ieee80211_hdr_3addr *mgmt = &resp->header; |
| |
| at76_dbg(DBG_RX_MGMT | DBG_PROGRESS, |
| "%s: rx DeAuth bssid %s reason 0x%04x destination %s", |
| priv->netdev->name, mac2str(mgmt->addr3), |
| le16_to_cpu(resp->reason), mac2str(mgmt->addr1)); |
| |
| if (priv->mac_state != MAC_AUTH && priv->mac_state != MAC_ASSOC |
| && priv->mac_state != MAC_CONNECTED) { |
| printk(KERN_INFO "%s: DeAuth in state %s ignored\n", |
| priv->netdev->name, mac_states[priv->mac_state]); |
| return; |
| } |
| |
| BUG_ON(!priv->curr_bss); |
| |
| /* Not our BSSID, ignore */ |
| if (compare_ether_addr(mgmt->addr3, priv->curr_bss->bssid)) |
| return; |
| |
| /* Not for our STA and not broadcast, ignore */ |
| if (compare_ether_addr(priv->netdev->dev_addr, mgmt->addr1) |
| && !is_broadcast_ether_addr(mgmt->addr1)) |
| return; |
| |
| if (priv->mac_state == MAC_CONNECTED) |
| at76_iwevent_bss_disconnect(priv->netdev); |
| |
| at76_set_mac_state(priv, MAC_JOINING); |
| schedule_work(&priv->work_join); |
| cancel_delayed_work(&priv->dwork_get_scan); |
| cancel_delayed_work(&priv->dwork_beacon); |
| cancel_delayed_work(&priv->dwork_auth); |
| cancel_delayed_work(&priv->dwork_assoc); |
| } |
| |
| static void at76_rx_mgmt_beacon(struct at76_priv *priv, |
| struct at76_rx_buffer *buf) |
| { |
| int varpar_len; |
| /* beacon content */ |
| struct ieee80211_beacon *bdata = (struct ieee80211_beacon *)buf->packet; |
| struct ieee80211_hdr_3addr *mgmt = &bdata->header; |
| |
| struct list_head *lptr; |
| struct bss_info *match; /* entry matching addr3 with its bssid */ |
| int new_entry = 0; |
| int len; |
| struct ieee80211_info_element *ie; |
| int have_ssid = 0; |
| int have_rates = 0; |
| int have_channel = 0; |
| int keep_going = 1; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&priv->bss_list_spinlock, flags); |
| if (priv->mac_state == MAC_CONNECTED) { |
| /* in state MAC_CONNECTED we use the mgmt_timer to control |
| the beacon of the BSS */ |
| BUG_ON(!priv->curr_bss); |
| |
| if (!compare_ether_addr(priv->curr_bss->bssid, mgmt->addr3)) { |
| /* We got our AP's beacon, defer the timeout handler. |
| Kill pending work first, as schedule_delayed_work() |
| won't do it. */ |
| cancel_delayed_work(&priv->dwork_beacon); |
| schedule_delayed_work(&priv->dwork_beacon, |
| BEACON_TIMEOUT); |
| priv->curr_bss->rssi = buf->rssi; |
| priv->beacons_received++; |
| goto exit; |
| } |
| } |
| |
| /* look if we have this BSS already in the list */ |
| match = NULL; |
| |
| if (!list_empty(&priv->bss_list)) { |
| list_for_each(lptr, &priv->bss_list) { |
| struct bss_info *bss_ptr = |
| list_entry(lptr, struct bss_info, list); |
| if (!compare_ether_addr(bss_ptr->bssid, mgmt->addr3)) { |
| match = bss_ptr; |
| break; |
| } |
| } |
| } |
| |
| if (!match) { |
| /* BSS not in the list - append it */ |
| match = kzalloc(sizeof(struct bss_info), GFP_ATOMIC); |
| if (!match) { |
| at76_dbg(DBG_BSS_TABLE, |
| "%s: cannot kmalloc new bss info (%zd byte)", |
| priv->netdev->name, sizeof(struct bss_info)); |
| goto exit; |
| } |
| new_entry = 1; |
| list_add_tail(&match->list, &priv->bss_list); |
| } |
| |
| match->capa = le16_to_cpu(bdata->capability); |
| match->beacon_interval = le16_to_cpu(bdata->beacon_interval); |
| match->rssi = buf->rssi; |
| match->link_qual = buf->link_quality; |
| match->noise_level = buf->noise_level; |
| memcpy(match->bssid, mgmt->addr3, ETH_ALEN); |
| at76_dbg(DBG_RX_BEACON, "%s: bssid %s", priv->netdev->name, |
| mac2str(match->bssid)); |
| |
| ie = bdata->info_element; |
| |
| /* length of var length beacon parameters */ |
| varpar_len = min_t(int, le16_to_cpu(buf->wlength) - |
| sizeof(struct ieee80211_beacon), |
| BEACON_MAX_DATA_LENGTH); |
| |
| /* This routine steps through the bdata->data array to get |
| * some useful information about the access point. |
| * Currently, this implementation supports receipt of: SSID, |
| * supported transfer rates and channel, in any order, with some |
| * tolerance for intermittent unknown codes (although this |
| * functionality may not be necessary as the useful information will |
| * usually arrive in consecutively, but there have been some |
| * reports of some of the useful information fields arriving in a |
| * different order). |
| * It does not support any more IE types although MFIE_TYPE_TIM may |
| * be supported (on my AP at least). |
| * The bdata->data array is about 1500 bytes long but only ~36 of those |
| * bytes are useful, hence the have_ssid etc optimizations. */ |
| |
| while (keep_going && |
| ((&ie->data[ie->len] - (u8 *)bdata->info_element) <= |
| varpar_len)) { |
| |
| switch (ie->id) { |
| |
| case MFIE_TYPE_SSID: |
| if (have_ssid) |
| break; |
| |
| len = min_t(int, IW_ESSID_MAX_SIZE, ie->len); |
| |
| /* we copy only if this is a new entry, |
| or the incoming SSID is not a hidden SSID. This |
| will protect us from overwriting a real SSID read |
| in a ProbeResponse with a hidden one from a |
| following beacon. */ |
| if (!new_entry && at76_is_hidden_ssid(ie->data, len)) { |
| have_ssid = 1; |
| break; |
| } |
| |
| match->ssid_len = len; |
| memcpy(match->ssid, ie->data, len); |
| at76_dbg(DBG_RX_BEACON, "%s: SSID - %.*s", |
| priv->netdev->name, len, match->ssid); |
| have_ssid = 1; |
| break; |
| |
| case MFIE_TYPE_RATES: |
| if (have_rates) |
| break; |
| |
| match->rates_len = |
| min_t(int, sizeof(match->rates), ie->len); |
| memcpy(match->rates, ie->data, match->rates_len); |
| have_rates = 1; |
| at76_dbg(DBG_RX_BEACON, "%s: SUPPORTED RATES %s", |
| priv->netdev->name, |
| hex2str(ie->data, ie->len)); |
| break; |
| |
| case MFIE_TYPE_DS_SET: |
| if (have_channel) |
| break; |
| |
| match->channel = ie->data[0]; |
| have_channel = 1; |
| at76_dbg(DBG_RX_BEACON, "%s: CHANNEL - %d", |
| priv->netdev->name, match->channel); |
| break; |
| |
| case MFIE_TYPE_CF_SET: |
| case MFIE_TYPE_TIM: |
| case MFIE_TYPE_IBSS_SET: |
| default: |
| at76_dbg(DBG_RX_BEACON, "%s: beacon IE id %d len %d %s", |
| priv->netdev->name, ie->id, ie->len, |
| hex2str(ie->data, ie->len)); |
| break; |
| } |
| |
| /* advance to the next informational element */ |
| next_ie(&ie); |
| |
| /* Optimization: after all, the bdata->data array is |
| * varpar_len bytes long, whereas we get all of the useful |
| * information after only ~36 bytes, this saves us a lot of |
| * time (and trouble as the remaining portion of the array |
| * could be full of junk) |
| * Comment this out if you want to see what other information |
| * comes from the AP - although little of it may be useful */ |
| } |
| |
| at76_dbg(DBG_RX_BEACON, "%s: Finished processing beacon data", |
| priv->netdev->name); |
| |
| match->last_rx = jiffies; /* record last rx of beacon */ |
| |
| exit: |
| spin_unlock_irqrestore(&priv->bss_list_spinlock, flags); |
| } |
| |
| /* Calculate the link level from a given rx_buffer */ |
| static void at76_calc_level(struct at76_priv *priv, struct at76_rx_buffer *buf, |
| struct iw_quality *qual) |
| { |
| /* just a guess for now, might be different for other chips */ |
| int max_rssi = 42; |
| |
| qual->level = (buf->rssi * 100 / max_rssi); |
| if (qual->level > 100) |
| qual->level = 100; |
| qual->updated |= IW_QUAL_LEVEL_UPDATED; |
| } |
| |
| /* Calculate the link quality from a given rx_buffer */ |
| static void at76_calc_qual(struct at76_priv *priv, struct at76_rx_buffer *buf, |
| struct iw_quality *qual) |
| { |
| if (at76_is_intersil(priv->board_type)) |
| qual->qual = buf->link_quality; |
| else { |
| unsigned long elapsed; |
| |
| /* Update qual at most once a second */ |
| elapsed = jiffies - priv->beacons_last_qual; |
| if (elapsed < 1 * HZ) |
| return; |
| |
| qual->qual = qual->level * priv->beacons_received * |
| msecs_to_jiffies(priv->beacon_period) / elapsed; |
| |
| priv->beacons_last_qual = jiffies; |
| priv->beacons_received = 0; |
| } |
| qual->qual = (qual->qual > 100) ? 100 : qual->qual; |
| qual->updated |= IW_QUAL_QUAL_UPDATED; |
| } |
| |
| /* Calculate the noise quality from a given rx_buffer */ |
| static void at76_calc_noise(struct at76_priv *priv, struct at76_rx_buffer *buf, |
| struct iw_quality *qual) |
| { |
| qual->noise = 0; |
| qual->updated |= IW_QUAL_NOISE_INVALID; |
| } |
| |
| static void at76_update_wstats(struct at76_priv *priv, |
| struct at76_rx_buffer *buf) |
| { |
| struct iw_quality *qual = &priv->wstats.qual; |
| |
| if (buf->rssi && priv->mac_state == MAC_CONNECTED) { |
| qual->updated = 0; |
| at76_calc_level(priv, buf, qual); |
| at76_calc_qual(priv, buf, qual); |
| at76_calc_noise(priv, buf, qual); |
| } else { |
| qual->qual = 0; |
| qual->level = 0; |
| qual->noise = 0; |
| qual->updated = IW_QUAL_ALL_INVALID; |
| } |
| } |
| |
| static void at76_rx_mgmt(struct at76_priv *priv, struct at76_rx_buffer *buf) |
| { |
| struct ieee80211_hdr_3addr *mgmt = |
| (struct ieee80211_hdr_3addr *)buf->packet; |
| u16 framectl = le16_to_cpu(mgmt->frame_ctl); |
| |
| /* update wstats */ |
| if (priv->mac_state != MAC_INIT && priv->mac_state != MAC_SCANNING) { |
| /* jal: this is a dirty hack needed by Tim in ad-hoc mode */ |
| /* Data packets always seem to have a 0 link level, so we |
| only read link quality info from management packets. |
| Atmel driver actually averages the present, and previous |
| values, we just present the raw value at the moment - TJS */ |
| if (priv->iw_mode == IW_MODE_ADHOC |
| || (priv->curr_bss |
| && !compare_ether_addr(mgmt->addr3, |
| priv->curr_bss->bssid))) |
| at76_update_wstats(priv, buf); |
| } |
| |
| at76_dbg(DBG_RX_MGMT_CONTENT, "%s rx mgmt framectl 0x%x %s", |
| priv->netdev->name, framectl, |
| hex2str(mgmt, le16_to_cpu(buf->wlength))); |
| |
| switch (framectl & IEEE80211_FCTL_STYPE) { |
| case IEEE80211_STYPE_BEACON: |
| case IEEE80211_STYPE_PROBE_RESP: |
| at76_rx_mgmt_beacon(priv, buf); |
| break; |
| |
| case IEEE80211_STYPE_ASSOC_RESP: |
| at76_rx_mgmt_assoc(priv, buf); |
| break; |
| |
| case IEEE80211_STYPE_DISASSOC: |
| at76_rx_mgmt_disassoc(priv, buf); |
| break; |
| |
| case IEEE80211_STYPE_AUTH: |
| at76_rx_mgmt_auth(priv, buf); |
| break; |
| |
| case IEEE80211_STYPE_DEAUTH: |
| at76_rx_mgmt_deauth(priv, buf); |
| break; |
| |
| default: |
| printk(KERN_DEBUG "%s: ignoring frame with framectl 0x%04x\n", |
| priv->netdev->name, framectl); |
| } |
| |
| return; |
| } |
| |
| /* Convert the 802.11 header into an ethernet-style header, make skb |
| * ready for consumption by netif_rx() */ |
| static void at76_ieee80211_to_eth(struct sk_buff *skb, int iw_mode) |
| { |
| struct ieee80211_hdr_3addr *i802_11_hdr; |
| struct ethhdr *eth_hdr_p; |
| u8 *src_addr; |
| u8 *dest_addr; |
| |
| i802_11_hdr = (struct ieee80211_hdr_3addr *)skb->data; |
| |
| /* That would be the ethernet header if the hardware converted |
| * the frame for us. Make sure the source and the destination |
| * match the 802.11 header. Which hardware does it? */ |
| eth_hdr_p = (struct ethhdr *)skb_pull(skb, IEEE80211_3ADDR_LEN); |
| |
| dest_addr = i802_11_hdr->addr1; |
| if (iw_mode == IW_MODE_ADHOC) |
| src_addr = i802_11_hdr->addr2; |
| else |
| src_addr = i802_11_hdr->addr3; |
| |
| if (!compare_ether_addr(eth_hdr_p->h_source, src_addr) && |
| !compare_ether_addr(eth_hdr_p->h_dest, dest_addr)) |
| /* Yes, we already have an ethernet header */ |
| skb_reset_mac_header(skb); |
| else { |
| u16 len; |
| |
| /* Need to build an ethernet header */ |
| if (!memcmp(skb->data, snapsig, sizeof(snapsig))) { |
| /* SNAP frame - decapsulate, keep proto */ |
| skb_push(skb, offsetof(struct ethhdr, h_proto) - |
| sizeof(rfc1042sig)); |
| len = 0; |
| } else { |
| /* 802.3 frame, proto is length */ |
| len = skb->len; |
| skb_push(skb, ETH_HLEN); |
| } |
| |
| skb_reset_mac_header(skb); |
| eth_hdr_p = eth_hdr(skb); |
| /* This needs to be done in this order (eth_hdr_p->h_dest may |
| * overlap src_addr) */ |
| memcpy(eth_hdr_p->h_source, src_addr, ETH_ALEN); |
| memcpy(eth_hdr_p->h_dest, dest_addr, ETH_ALEN); |
| if (len) |
| eth_hdr_p->h_proto = htons(len); |
| } |
| |
| skb->protocol = eth_type_trans(skb, skb->dev); |
| } |
| |
| /* Check for fragmented data in priv->rx_skb. If the packet was no fragment |
| or it was the last of a fragment set a skb containing the whole packet |
| is returned for further processing. Otherwise we get NULL and are |
| done and the packet is either stored inside the fragment buffer |
| or thrown away. Every returned skb starts with the ieee802_11 header |
| and contains _no_ FCS at the end */ |
| static struct sk_buff *at76_check_for_rx_frags(struct at76_priv *priv) |
| { |
| struct sk_buff *skb = priv->rx_skb; |
| struct at76_rx_buffer *buf = (struct at76_rx_buffer *)skb->data; |
| struct ieee80211_hdr_3addr *i802_11_hdr = |
| (struct ieee80211_hdr_3addr *)buf->packet; |
| /* seq_ctrl, fragment_number, sequence number of new packet */ |
| u16 sctl = le16_to_cpu(i802_11_hdr->seq_ctl); |
| u16 fragnr = sctl & 0xf; |
| u16 seqnr = sctl >> 4; |
| u16 frame_ctl = le16_to_cpu(i802_11_hdr->frame_ctl); |
| |
| /* Length including the IEEE802.11 header, but without the trailing |
| * FCS and without the Atmel Rx header */ |
| int length = le16_to_cpu(buf->wlength) - IEEE80211_FCS_LEN; |
| |
| /* where does the data payload start in skb->data ? */ |
| u8 *data = i802_11_hdr->payload; |
| |
| /* length of payload, excl. the trailing FCS */ |
| int data_len = length - IEEE80211_3ADDR_LEN; |
| |
| int i; |
| struct rx_data_buf *bptr, *optr; |
| unsigned long oldest = ~0UL; |
| |
| at76_dbg(DBG_RX_FRAGS, |
| "%s: rx data frame_ctl %04x addr2 %s seq/frag %d/%d " |
| "length %d data %d: %s ...", priv->netdev->name, frame_ctl, |
| mac2str(i802_11_hdr->addr2), seqnr, fragnr, length, data_len, |
| hex2str(data, 32)); |
| |
| at76_dbg(DBG_RX_FRAGS_SKB, "%s: incoming skb: head %p data %p " |
| "tail %p end %p len %d", priv->netdev->name, skb->head, |
| skb->data, skb_tail_pointer(skb), skb_end_pointer(skb), |
| skb->len); |
| |
| if (data_len < 0) { |
| /* make sure data starts in the buffer */ |
| printk(KERN_INFO "%s: data frame too short\n", |
| priv->netdev->name); |
| return NULL; |
| } |
| |
| WARN_ON(length <= AT76_RX_HDRLEN); |
| if (length <= AT76_RX_HDRLEN) |
| return NULL; |
| |
| /* remove the at76_rx_buffer header - we don't need it anymore */ |
| /* we need the IEEE802.11 header (for the addresses) if this packet |
| is the first of a chain */ |
| skb_pull(skb, AT76_RX_HDRLEN); |
| |
| /* remove FCS at end */ |
| skb_trim(skb, length); |
| |
| at76_dbg(DBG_RX_FRAGS_SKB, "%s: trimmed skb: head %p data %p tail %p " |
| "end %p len %d data %p data_len %d", priv->netdev->name, |
| skb->head, skb->data, skb_tail_pointer(skb), |
| skb_end_pointer(skb), skb->len, data, data_len); |
| |
| if (fragnr == 0 && !(frame_ctl & IEEE80211_FCTL_MOREFRAGS)) { |
| /* unfragmented packet received */ |
| /* Use a new skb for the next receive */ |
| priv->rx_skb = NULL; |
| at76_dbg(DBG_RX_FRAGS, "%s: unfragmented", priv->netdev->name); |
| return skb; |
| } |
| |
| /* look if we've got a chain for the sender address. |
| afterwards optr points to first free or the oldest entry, |
| or, if i < NR_RX_DATA_BUF, bptr points to the entry for the |
| sender address */ |
| /* determining the oldest entry doesn't cope with jiffies wrapping |
| but I don't care to delete a young entry at these rare moments ... */ |
| |
| bptr = priv->rx_data; |
| optr = NULL; |
| for (i = 0; i < NR_RX_DATA_BUF; i++, bptr++) { |
| if (!bptr->skb) { |
| optr = bptr; |
| oldest = 0UL; |
| continue; |
| } |
| |
| if (!compare_ether_addr(i802_11_hdr->addr2, bptr->sender)) |
| break; |
| |
| if (!optr) { |
| optr = bptr; |
| oldest = bptr->last_rx; |
| } else if (bptr->last_rx < oldest) |
| optr = bptr; |
| } |
| |
| if (i < NR_RX_DATA_BUF) { |
| |
| at76_dbg(DBG_RX_FRAGS, "%s: %d. cacheentry (seq/frag = %d/%d) " |
| "matched sender addr", |
| priv->netdev->name, i, bptr->seqnr, bptr->fragnr); |
| |
| /* bptr points to an entry for the sender address */ |
| if (bptr->seqnr == seqnr) { |
| int left; |
| /* the fragment has the current sequence number */ |
| if (((bptr->fragnr + 1) & 0xf) != fragnr) { |
| /* wrong fragment number -> ignore it */ |
| /* is & 0xf necessary above ??? */ |
| at76_dbg(DBG_RX_FRAGS, |
| "%s: frag nr mismatch: %d + 1 != %d", |
| priv->netdev->name, bptr->fragnr, |
| fragnr); |
| return NULL; |
| } |
| bptr->last_rx = jiffies; |
| /* the next following fragment number -> |
| add the data at the end */ |
| |
| /* for test only ??? */ |
| left = skb_tailroom(bptr->skb); |
| if (left < data_len) |
| printk(KERN_INFO |
| "%s: only %d byte free (need %d)\n", |
| priv->netdev->name, left, data_len); |
| else |
| memcpy(skb_put(bptr->skb, data_len), data, |
| data_len); |
| |
| bptr->fragnr = fragnr; |
| if (frame_ctl & IEEE80211_FCTL_MOREFRAGS) |
| return NULL; |
| |
| /* this was the last fragment - send it */ |
| skb = bptr->skb; |
| bptr->skb = NULL; /* free the entry */ |
| at76_dbg(DBG_RX_FRAGS, "%s: last frag of seq %d", |
| priv->netdev->name, seqnr); |
| return skb; |
| } |
| |
| /* got another sequence number */ |
| if (fragnr == 0) { |
| /* it's the start of a new chain - replace the |
| old one by this */ |
| /* bptr->sender has the correct value already */ |
| at76_dbg(DBG_RX_FRAGS, |
| "%s: start of new seq %d, removing old seq %d", |
| priv->netdev->name, seqnr, bptr->seqnr); |
| bptr->seqnr = seqnr; |
| bptr->fragnr = 0; |
| bptr->last_rx = jiffies; |
| /* swap bptr->skb and priv->rx_skb */ |
| skb = bptr->skb; |
| bptr->skb = priv->rx_skb; |
| priv->rx_skb = skb; |
| } else { |
| /* it from the middle of a new chain -> |
| delete the old entry and skip the new one */ |
| at76_dbg(DBG_RX_FRAGS, |
| "%s: middle of new seq %d (%d) " |
| "removing old seq %d", |
| priv->netdev->name, seqnr, fragnr, |
| bptr->seqnr); |
| dev_kfree_skb(bptr->skb); |
| bptr->skb = NULL; |
| } |
| return NULL; |
| } |
| |
| /* if we didn't find a chain for the sender address, optr |
| points either to the first free or the oldest entry */ |
| |
| if (fragnr != 0) { |
| /* this is not the begin of a fragment chain ... */ |
| at76_dbg(DBG_RX_FRAGS, |
| "%s: no chain for non-first fragment (%d)", |
| priv->netdev->name, fragnr); |
| return NULL; |
| } |
| |
| BUG_ON(!optr); |
| if (optr->skb) { |
| /* swap the skb's */ |
| skb = optr->skb; |
| optr->skb = priv->rx_skb; |
| priv->rx_skb = skb; |
| |
| at76_dbg(DBG_RX_FRAGS, |
| "%s: free old contents: sender %s seq/frag %d/%d", |
| priv->netdev->name, mac2str(optr->sender), |
| optr->seqnr, optr->fragnr); |
| |
| } else { |
| /* take the skb from priv->rx_skb */ |
| optr->skb = priv->rx_skb; |
| /* let at76_submit_rx_urb() allocate a new skb */ |
| priv->rx_skb = NULL; |
| |
| at76_dbg(DBG_RX_FRAGS, "%s: use a free entry", |
| priv->netdev->name); |
| } |
| memcpy(optr->sender, i802_11_hdr->addr2, ETH_ALEN); |
| optr->seqnr = seqnr; |
| optr->fragnr = 0; |
| optr->last_rx = jiffies; |
| |
| return NULL; |
| } |
| |
| /* Rx interrupt: we expect the complete data buffer in priv->rx_skb */ |
| static void at76_rx_data(struct at76_priv *priv) |
| { |
| struct net_device *netdev = priv->netdev; |
| struct net_device_stats *stats = &priv->stats; |
| struct sk_buff *skb = priv->rx_skb; |
| struct at76_rx_buffer *buf = (struct at76_rx_buffer *)skb->data; |
| struct ieee80211_hdr_3addr *i802_11_hdr; |
| int length = le16_to_cpu(buf->wlength); |
| |
| at76_dbg(DBG_RX_DATA, "%s received data packet: %s", netdev->name, |
| hex2str(skb->data, AT76_RX_HDRLEN)); |
| |
| at76_dbg(DBG_RX_DATA_CONTENT, "rx packet: %s", |
| hex2str(skb->data + AT76_RX_HDRLEN, length)); |
| |
| skb = at76_check_for_rx_frags(priv); |
| if (!skb) |
| return; |
| |
| /* Atmel header and the FCS are already removed */ |
| i802_11_hdr = (struct ieee80211_hdr_3addr *)skb->data; |
| |
| skb->dev = netdev; |
| skb->ip_summed = CHECKSUM_NONE; /* TODO: should check CRC */ |
| |
| if (is_broadcast_ether_addr(i802_11_hdr->addr1)) { |
| if (!compare_ether_addr(i802_11_hdr->addr1, netdev->broadcast)) |
| skb->pkt_type = PACKET_BROADCAST; |
| else |
| skb->pkt_type = PACKET_MULTICAST; |
| } else if (compare_ether_addr(i802_11_hdr->addr1, netdev->dev_addr)) |
| skb->pkt_type = PACKET_OTHERHOST; |
| |
| at76_ieee80211_to_eth(skb, priv->iw_mode); |
| |
| netdev->last_rx = jiffies; |
| netif_rx(skb); |
| stats->rx_packets++; |
| stats->rx_bytes += length; |
| |
| return; |
| } |
| |
| static void at76_rx_monitor_mode(struct at76_priv *priv) |
| { |
| struct at76_rx_radiotap *rt; |
| u8 *payload; |
| int skblen; |
| struct net_device *netdev = priv->netdev; |
| struct at76_rx_buffer *buf = |
| (struct at76_rx_buffer *)priv->rx_skb->data; |
| /* length including the IEEE802.11 header and the trailing FCS, |
| but not at76_rx_buffer */ |
| int length = le16_to_cpu(buf->wlength); |
| struct sk_buff *skb = priv->rx_skb; |
| struct net_device_stats *stats = &priv->stats; |
| |
| if (length < IEEE80211_FCS_LEN) { |
| /* buffer contains no data */ |
| at76_dbg(DBG_MONITOR_MODE, |
| "%s: MONITOR MODE: rx skb without data", |
| priv->netdev->name); |
| return; |
| } |
| |
| skblen = sizeof(struct at76_rx_radiotap) + length; |
| |
| skb = dev_alloc_skb(skblen); |
| if (!skb) { |
| printk(KERN_ERR "%s: MONITOR MODE: dev_alloc_skb for radiotap " |
| "header returned NULL\n", priv->netdev->name); |
| return; |
| } |
| |
| skb_put(skb, skblen); |
| |
| rt = (struct at76_rx_radiotap *)skb->data; |
| payload = skb->data + sizeof(struct at76_rx_radiotap); |
| |
| rt->rt_hdr.it_version = 0; |
| rt->rt_hdr.it_pad = 0; |
| rt->rt_hdr.it_len = cpu_to_le16(sizeof(struct at76_rx_radiotap)); |
| rt->rt_hdr.it_present = cpu_to_le32(AT76_RX_RADIOTAP_PRESENT); |
| |
| rt->rt_tsft = cpu_to_le64(le32_to_cpu(buf->rx_time)); |
| rt->rt_rate = hw_rates[buf->rx_rate] & (~0x80); |
| rt->rt_signal = buf->rssi; |
| rt->rt_noise = buf->noise_level; |
| rt->rt_flags = IEEE80211_RADIOTAP_F_FCS; |
| if (buf->fragmentation) |
| rt->rt_flags |= IEEE80211_RADIOTAP_F_FRAG; |
| |
| memcpy(payload, buf->packet, length); |
| skb->dev = netdev; |
| skb->ip_summed = CHECKSUM_NONE; |
| skb_reset_mac_header(skb); |
| skb->pkt_type = PACKET_OTHERHOST; |
| skb->protocol = htons(ETH_P_802_2); |
| |
| netdev->last_rx = jiffies; |
| netif_rx(skb); |
| stats->rx_packets++; |
| stats->rx_bytes += length; |
| } |
| |
| /* Check if we spy on the sender address in buf and update stats */ |
| static void at76_iwspy_update(struct at76_priv *priv, |
| struct at76_rx_buffer *buf) |
| { |
| struct ieee80211_hdr_3addr *hdr = |
| (struct ieee80211_hdr_3addr *)buf->packet; |
| struct iw_quality qual; |
| |
| /* We can only set the level here */ |
| qual.updated = IW_QUAL_QUAL_INVALID | IW_QUAL_NOISE_INVALID; |
| qual.level = 0; |
| qual.noise = 0; |
| at76_calc_level(priv, buf, &qual); |
| |
| spin_lock_bh(&priv->spy_spinlock); |
| |
| if (priv->spy_data.spy_number > 0) |
| wireless_spy_update(priv->netdev, hdr->addr2, &qual); |
| |
| spin_unlock_bh(&priv->spy_spinlock); |
| } |
| |
| static void at76_rx_tasklet(unsigned long param) |
| { |
| struct urb *urb = (struct urb *)param; |
| struct at76_priv *priv = urb->context; |
| struct net_device *netdev = priv->netdev; |
| struct at76_rx_buffer *buf; |
| struct ieee80211_hdr_3addr *i802_11_hdr; |
| u16 frame_ctl; |
| |
| if (priv->device_unplugged) { |
| at76_dbg(DBG_DEVSTART, "device unplugged"); |
| if (urb) |
| at76_dbg(DBG_DEVSTART, "urb status %d", urb->status); |
| return; |
| } |
| |
| if (!priv->rx_skb || !netdev || !priv->rx_skb->data) |
| return; |
| |
| buf = (struct at76_rx_buffer *)priv->rx_skb->data; |
| |
| i802_11_hdr = (struct ieee80211_hdr_3addr *)buf->packet; |
| |
| frame_ctl = le16_to_cpu(i802_11_hdr->frame_ctl); |
| |
| if (urb->status != 0) { |
| if (urb->status != -ENOENT && urb->status != -ECONNRESET) |
| at76_dbg(DBG_URB, |
| "%s %s: - nonzero Rx bulk status received: %d", |
| __func__, netdev->name, urb->status); |
| return; |
| } |
| |
| at76_dbg(DBG_RX_ATMEL_HDR, |
| "%s: rx frame: rate %d rssi %d noise %d link %d %s", |
| priv->netdev->name, buf->rx_rate, buf->rssi, buf->noise_level, |
| buf->link_quality, hex2str(i802_11_hdr, 48)); |
| if (priv->iw_mode == IW_MODE_MONITOR) { |
| at76_rx_monitor_mode(priv); |
| goto exit; |
| } |
| |
| /* there is a new bssid around, accept it: */ |
| if (buf->newbss && priv->iw_mode == IW_MODE_ADHOC) { |
| at76_dbg(DBG_PROGRESS, "%s: rx newbss", netdev->name); |
| schedule_work(&priv->work_new_bss); |
| } |
| |
| switch (frame_ctl & IEEE80211_FCTL_FTYPE) { |
| case IEEE80211_FTYPE_DATA: |
| at76_rx_data(priv); |
| break; |
| |
| case IEEE80211_FTYPE_MGMT: |
| /* jal: TODO: find out if we can update iwspy also on |
| other frames than management (might depend on the |
| radio chip / firmware version !) */ |
| |
| at76_iwspy_update(priv, buf); |
| |
| at76_rx_mgmt(priv, buf); |
| break; |
| |
| case IEEE80211_FTYPE_CTL: |
| at76_dbg(DBG_RX_CTRL, "%s: ignored ctrl frame: %04x", |
| priv->netdev->name, frame_ctl); |
| break; |
| |
| default: |
| printk(KERN_DEBUG "%s: ignoring frame with framectl 0x%04x\n", |
| priv->netdev->name, frame_ctl); |
| } |
| exit: |
| at76_submit_rx_urb(priv); |
| } |
| |
| /* Load firmware into kernel memory and parse it */ |
| static struct fwentry *at76_load_firmware(struct usb_device *udev, |
| enum board_type board_type) |
| { |
| int ret; |
| char *str; |
| struct at76_fw_header *fwh; |
| struct fwentry *fwe = &firmwares[board_type]; |
| |
| mutex_lock(&fw_mutex); |
| |
| if (fwe->loaded) { |
| at76_dbg(DBG_FW, "re-using previously loaded fw"); |
| goto exit; |
| } |
| |
| at76_dbg(DBG_FW, "downloading firmware %s", fwe->fwname); |
| ret = request_firmware(&fwe->fw, fwe->fwname, &udev->dev); |
| if (ret < 0) { |
| dev_printk(KERN_ERR, &udev->dev, "firmware %s not found!\n", |
| fwe->fwname); |
| dev_printk(KERN_ERR, &udev->dev, |
| "you may need to download the firmware from " |
| "http://developer.berlios.de/projects/at76c503a/"); |
| goto exit; |
| } |
| |
| at76_dbg(DBG_FW, "got it."); |
| fwh = (struct at76_fw_header *)(fwe->fw->data); |
| |
| if (fwe->fw->size <= sizeof(*fwh)) { |
| dev_printk(KERN_ERR, &udev->dev, |
| "firmware is too short (0x%zx)\n", fwe->fw->size); |
| goto exit; |
| } |
| |
| /* CRC currently not checked */ |
| fwe->board_type = le32_to_cpu(fwh->board_type); |
| if (fwe->board_type != board_type) { |
| dev_printk(KERN_ERR, &udev->dev, |
| "board type mismatch, requested %u, got %u\n", |
| board_type, fwe->board_type); |
| goto exit; |
| } |
| |
| fwe->fw_version.major = fwh->major; |
| fwe->fw_version.minor = fwh->minor; |
| fwe->fw_version.patch = fwh->patch; |
| fwe->fw_version.build = fwh->build; |
| |
| str = (char *)fwh + le32_to_cpu(fwh->str_offset); |
| fwe->intfw = (u8 *)fwh + le32_to_cpu(fwh->int_fw_offset); |
| fwe->intfw_size = le32_to_cpu(fwh->int_fw_len); |
| fwe->extfw = (u8 *)fwh + le32_to_cpu(fwh->ext_fw_offset); |
| fwe->extfw_size = le32_to_cpu(fwh->ext_fw_len); |
| |
| fwe->loaded = 1; |
| |
| dev_printk(KERN_DEBUG, &udev->dev, |
| "using firmware %s (version %d.%d.%d-%d)\n", |
| fwe->fwname, fwh->major, fwh->minor, fwh->patch, fwh->build); |
| |
| at76_dbg(DBG_DEVSTART, "board %u, int %d:%d, ext %d:%d", board_type, |
| le32_to_cpu(fwh->int_fw_offset), le32_to_cpu(fwh->int_fw_len), |
| le32_to_cpu(fwh->ext_fw_offset), le32_to_cpu(fwh->ext_fw_len)); |
| at76_dbg(DBG_DEVSTART, "firmware id %s", str); |
| |
| exit: |
| mutex_unlock(&fw_mutex); |
| |
| if (fwe->loaded) |
| return fwe; |
| else |
| return NULL; |
| } |
| |
| /* Allocate network device and initialize private data */ |
| static struct at76_priv *at76_alloc_new_device(struct usb_device *udev) |
| { |
| struct net_device *netdev; |
| struct at76_priv *priv; |
| int i; |
| |
| /* allocate memory for our device state and initialize it */ |
| netdev = alloc_etherdev(sizeof(struct at76_priv)); |
| if (!netdev) { |
| dev_printk(KERN_ERR, &udev->dev, "out of memory\n"); |
| return NULL; |
| } |
| |
| priv = netdev_priv(netdev); |
| |
| priv->udev = udev; |
| priv->netdev = netdev; |
| |
| mutex_init(&priv->mtx); |
| INIT_WORK(&priv->work_assoc_done, at76_work_assoc_done); |
| INIT_WORK(&priv->work_join, at76_work_join); |
| INIT_WORK(&priv->work_new_bss, at76_work_new_bss); |
| INIT_WORK(&priv->work_start_scan, at76_work_start_scan); |
| INIT_WORK(&priv->work_set_promisc, at76_work_set_promisc); |
| INIT_WORK(&priv->work_submit_rx, at76_work_submit_rx); |
| INIT_DELAYED_WORK(&priv->dwork_restart, at76_dwork_restart); |
| INIT_DELAYED_WORK(&priv->dwork_get_scan, at76_dwork_get_scan); |
| INIT_DELAYED_WORK(&priv->dwork_beacon, at76_dwork_beacon); |
| INIT_DELAYED_WORK(&priv->dwork_auth, at76_dwork_auth); |
| INIT_DELAYED_WORK(&priv->dwork_assoc, at76_dwork_assoc); |
| |
| spin_lock_init(&priv->mgmt_spinlock); |
| priv->next_mgmt_bulk = NULL; |
| priv->mac_state = MAC_INIT; |
| |
| /* initialize empty BSS list */ |
| priv->curr_bss = NULL; |
| INIT_LIST_HEAD(&priv->bss_list); |
| spin_lock_init(&priv->bss_list_spinlock); |
| |
| init_timer(&priv->bss_list_timer); |
| priv->bss_list_timer.data = (unsigned long)priv; |
| priv->bss_list_timer.function = at76_bss_list_timeout; |
| |
| spin_lock_init(&priv->spy_spinlock); |
| |
| /* mark all rx data entries as unused */ |
| for (i = 0; i < NR_RX_DATA_BUF; i++) |
| priv->rx_data[i].skb = NULL; |
| |
| priv->rx_tasklet.func = at76_rx_tasklet; |
| priv->rx_tasklet.data = 0; |
| |
| priv->pm_mode = AT76_PM_OFF; |
| priv->pm_period = 0; |
| |
| return priv; |
| } |
| |
| static int at76_alloc_urbs(struct at76_priv *priv, |
| struct usb_interface *interface) |
| { |
| struct usb_endpoint_descriptor *endpoint, *ep_in, *ep_out; |
| int i; |
| int buffer_size; |
| struct usb_host_interface *iface_desc; |
| |
| at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__); |
| |
| at76_dbg(DBG_URB, "%s: NumEndpoints %d ", __func__, |
| interface->altsetting[0].desc.bNumEndpoints); |
| |
| ep_in = NULL; |
| ep_out = NULL; |
| iface_desc = interface->cur_altsetting; |
| for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) { |
| endpoint = &iface_desc->endpoint[i].desc; |
| |
| at76_dbg(DBG_URB, "%s: %d. endpoint: addr 0x%x attr 0x%x", |
| __func__, i, endpoint->bEndpointAddress, |
| endpoint->bmAttributes); |
| |
| if (!ep_in && usb_endpoint_is_bulk_in(endpoint)) |
| ep_in = endpoint; |
| |
| if (!ep_out && usb_endpoint_is_bulk_out(endpoint)) |
| ep_out = endpoint; |
| } |
| |
| if (!ep_in || !ep_out) { |
| dev_printk(KERN_ERR, &interface->dev, |
| "bulk endpoints missing\n"); |
| return -ENXIO; |
| } |
| |
| priv->rx_pipe = usb_rcvbulkpipe(priv->udev, ep_in->bEndpointAddress); |
| priv->tx_pipe = usb_sndbulkpipe(priv->udev, ep_out->bEndpointAddress); |
| |
| priv->rx_urb = usb_alloc_urb(0, GFP_KERNEL); |
| priv->tx_urb = usb_alloc_urb(0, GFP_KERNEL); |
| if (!priv->rx_urb || !priv->tx_urb) { |
| dev_printk(KERN_ERR, &interface->dev, "cannot allocate URB\n"); |
| return -ENOMEM; |
| } |
| |
| buffer_size = sizeof(struct at76_tx_buffer) + MAX_PADDING_SIZE; |
| priv->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL); |
| if (!priv->bulk_out_buffer) { |
| dev_printk(KERN_ERR, &interface->dev, |
| "cannot allocate output buffer\n"); |
| return -ENOMEM; |
| } |
| |
| at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__); |
| |
| return 0; |
| } |
| |
| /* Register network device and initialize the hardware */ |
| static int at76_init_new_device(struct at76_priv *priv, |
| struct usb_interface *interface) |
| { |
| struct net_device *netdev = priv->netdev; |
| int ret; |
| |
| /* set up the endpoint information */ |
| /* check out the endpoints */ |
| |
| at76_dbg(DBG_DEVSTART, "USB interface: %d endpoints", |
| interface->cur_altsetting->desc.bNumEndpoints); |
| |
| ret = at76_alloc_urbs(priv, interface); |
| if (ret < 0) |
| goto exit; |
| |
| /* MAC address */ |
| ret = at76_get_hw_config(priv); |
| if (ret < 0) { |
| dev_printk(KERN_ERR, &interface->dev, |
| "cannot get MAC address\n"); |
| goto exit; |
| } |
| |
| priv->domain = at76_get_reg_domain(priv->regulatory_domain); |
| /* init. netdev->dev_addr */ |
| memcpy(netdev->dev_addr, priv->mac_addr, ETH_ALEN); |
| |
| priv->channel = DEF_CHANNEL; |
| priv->iw_mode = IW_MODE_INFRA; |
| priv->rts_threshold = DEF_RTS_THRESHOLD; |
| priv->frag_threshold = DEF_FRAG_THRESHOLD; |
| priv->short_retry_limit = DEF_SHORT_RETRY_LIMIT; |
| priv->txrate = TX_RATE_AUTO; |
| priv->preamble_type = PREAMBLE_TYPE_LONG; |
| priv->beacon_period = 100; |
| priv->beacons_last_qual = jiffies; |
| priv->auth_mode = WLAN_AUTH_OPEN; |
| priv->scan_min_time = DEF_SCAN_MIN_TIME; |
| priv->scan_max_time = DEF_SCAN_MAX_TIME; |
| priv->scan_mode = SCAN_TYPE_ACTIVE; |
| |
| netdev->flags &= ~IFF_MULTICAST; /* not yet or never */ |
| netdev->open = at76_open; |
| netdev->stop = at76_stop; |
| netdev->get_stats = at76_get_stats; |
| netdev->ethtool_ops = &at76_ethtool_ops; |
| |
| /* Add pointers to enable iwspy support. */ |
| priv->wireless_data.spy_data = &priv->spy_data; |
| netdev->wireless_data = &priv->wireless_data; |
| |
| netdev->hard_start_xmit = at76_tx; |
| netdev->tx_timeout = at76_tx_timeout; |
| netdev->watchdog_timeo = 2 * HZ; |
| netdev->wireless_handlers = &at76_handler_def; |
| netdev->set_multicast_list = at76_set_multicast; |
| netdev->set_mac_address = at76_set_mac_address; |
| dev_alloc_name(netdev, "wlan%d"); |
| |
| ret = register_netdev(priv->netdev); |
| if (ret) { |
| dev_printk(KERN_ERR, &interface->dev, |
| "cannot register netdevice (status %d)!\n", ret); |
| goto exit; |
| } |
| priv->netdev_registered = 1; |
| |
| printk(KERN_INFO "%s: USB %s, MAC %s, firmware %d.%d.%d-%d\n", |
| netdev->name, dev_name(&interface->dev), mac2str(priv->mac_addr), |
| priv->fw_version.major, priv->fw_version.minor, |
| priv->fw_version.patch, priv->fw_version.build); |
| printk(KERN_INFO "%s: regulatory domain 0x%02x: %s\n", netdev->name, |
| priv->regulatory_domain, priv->domain->name); |
| |
| /* we let this timer run the whole time this driver instance lives */ |
| mod_timer(&priv->bss_list_timer, jiffies + BSS_LIST_TIMEOUT); |
| |
| exit: |
| return ret; |
| } |
| |
| static void at76_delete_device(struct at76_priv *priv) |
| { |
| int i; |
| |
| at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__); |
| |
| /* The device is gone, don't bother turning it off */ |
| priv->device_unplugged = 1; |
| |
| if (priv->netdev_registered) |
| unregister_netdev(priv->netdev); |
| |
| /* assuming we used keventd, it must quiesce too */ |
| flush_scheduled_work(); |
| |
| kfree(priv->bulk_out_buffer); |
| |
| if (priv->tx_urb) { |
| usb_kill_urb(priv->tx_urb); |
| usb_free_urb(priv->tx_urb); |
| } |
| if (priv->rx_urb) { |
| usb_kill_urb(priv->rx_urb); |
| usb_free_urb(priv->rx_urb); |
| } |
| |
| at76_dbg(DBG_PROC_ENTRY, "%s: unlinked urbs", __func__); |
| |
| if (priv->rx_skb) |
| kfree_skb(priv->rx_skb); |
| |
| at76_free_bss_list(priv); |
| del_timer_sync(&priv->bss_list_timer); |
| cancel_delayed_work(&priv->dwork_get_scan); |
| cancel_delayed_work(&priv->dwork_beacon); |
| cancel_delayed_work(&priv->dwork_auth); |
| cancel_delayed_work(&priv->dwork_assoc); |
| |
| if (priv->mac_state == MAC_CONNECTED) |
| at76_iwevent_bss_disconnect(priv->netdev); |
| |
| for (i = 0; i < NR_RX_DATA_BUF; i++) |
| if (priv->rx_data[i].skb) { |
| dev_kfree_skb(priv->rx_data[i].skb); |
| priv->rx_data[i].skb = NULL; |
| } |
| usb_put_dev(priv->udev); |
| |
| at76_dbg(DBG_PROC_ENTRY, "%s: before freeing priv/netdev", __func__); |
| free_netdev(priv->netdev); /* priv is in netdev */ |
| |
| at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__); |
| } |
| |
| static int at76_probe(struct usb_interface *interface, |
| const struct usb_device_id *id) |
| { |
| int ret; |
| struct at76_priv *priv; |
| struct fwentry *fwe; |
| struct usb_device *udev; |
| int op_mode; |
| int need_ext_fw = 0; |
| struct mib_fw_version fwv; |
| int board_type = (int)id->driver_info; |
| |
| udev = usb_get_dev(interface_to_usbdev(interface)); |
| |
| /* Load firmware into kernel memory */ |
| fwe = at76_load_firmware(udev, board_type); |
| if (!fwe) { |
| ret = -ENOENT; |
| goto error; |
| } |
| |
| op_mode = at76_get_op_mode(udev); |
| |
| at76_dbg(DBG_DEVSTART, "opmode %d", op_mode); |
| |
| /* we get OPMODE_NONE with 2.4.23, SMC2662W-AR ??? |
| we get 204 with 2.4.23, Fiberline FL-WL240u (505A+RFMD2958) ??? */ |
| |
| if (op_mode == OPMODE_HW_CONFIG_MODE) { |
| dev_printk(KERN_ERR, &interface->dev, |
| "cannot handle a device in HW_CONFIG_MODE\n"); |
| ret = -EBUSY; |
| goto error; |
| } |
| |
| if (op_mode != OPMODE_NORMAL_NIC_WITH_FLASH |
| && op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) { |
| /* download internal firmware part */ |
| dev_printk(KERN_DEBUG, &interface->dev, |
| "downloading internal firmware\n"); |
| ret = at76_load_internal_fw(udev, fwe); |
| if (ret < 0) { |
| dev_printk(KERN_ERR, &interface->dev, |
| "error %d downloading internal firmware\n", |
| ret); |
| goto error; |
| } |
| usb_put_dev(udev); |
| return ret; |
| } |
| |
| /* Internal firmware already inside the device. Get firmware |
| * version to test if external firmware is loaded. |
| * This works only for newer firmware, e.g. the Intersil 0.90.x |
| * says "control timeout on ep0in" and subsequent |
| * at76_get_op_mode() fail too :-( */ |
| |
| /* if version >= 0.100.x.y or device with built-in flash we can |
| * query the device for the fw version */ |
| if ((fwe->fw_version.major > 0 || fwe->fw_version.minor >= 100) |
| || (op_mode == OPMODE_NORMAL_NIC_WITH_FLASH)) { |
| ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv)); |
| if (ret < 0 || (fwv.major | fwv.minor) == 0) |
| need_ext_fw = 1; |
| } else |
| /* No way to check firmware version, reload to be sure */ |
| need_ext_fw = 1; |
| |
| if (need_ext_fw) { |
| dev_printk(KERN_DEBUG, &interface->dev, |
| "downloading external firmware\n"); |
| |
| ret = at76_load_external_fw(udev, fwe); |
| if (ret) |
| goto error; |
| |
| /* Re-check firmware version */ |
| ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv)); |
| if (ret < 0) { |
| dev_printk(KERN_ERR, &interface->dev, |
| "error %d getting firmware version\n", ret); |
| goto error; |
| } |
| } |
| |
| priv = at76_alloc_new_device(udev); |
| if (!priv) { |
| ret = -ENOMEM; |
| goto error; |
| } |
| |
| SET_NETDEV_DEV(priv->netdev, &interface->dev); |
| usb_set_intfdata(interface, priv); |
| |
| memcpy(&priv->fw_version, &fwv, sizeof(struct mib_fw_version)); |
| priv->board_type = board_type; |
| |
| ret = at76_init_new_device(priv, interface); |
| if (ret < 0) |
| at76_delete_device(priv); |
| |
| return ret; |
| |
| error: |
| usb_put_dev(udev); |
| return ret; |
| } |
| |
| static void at76_disconnect(struct usb_interface *interface) |
| { |
| struct at76_priv *priv; |
| |
| priv = usb_get_intfdata(interface); |
| usb_set_intfdata(interface, NULL); |
| |
| /* Disconnect after loading internal firmware */ |
| if (!priv) |
| return; |
| |
| printk(KERN_INFO "%s: disconnecting\n", priv->netdev->name); |
| at76_delete_device(priv); |
| dev_printk(KERN_INFO, &interface->dev, "disconnected\n"); |
| } |
| |
| /* Structure for registering this driver with the USB subsystem */ |
| static struct usb_driver at76_driver = { |
| .name = DRIVER_NAME, |
| .probe = at76_probe, |
| .disconnect = at76_disconnect, |
| .id_table = dev_table, |
| }; |
| |
| static int __init at76_mod_init(void) |
| { |
| int result; |
| |
| printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " loading\n"); |
| |
| mutex_init(&fw_mutex); |
| |
| /* register this driver with the USB subsystem */ |
| result = usb_register(&at76_driver); |
| if (result < 0) |
| printk(KERN_ERR DRIVER_NAME |
| ": usb_register failed (status %d)\n", result); |
| |
| led_trigger_register_simple("at76_usb-tx", &ledtrig_tx); |
| return result; |
| } |
| |
| static void __exit at76_mod_exit(void) |
| { |
| int i; |
| |
| printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " unloading\n"); |
| usb_deregister(&at76_driver); |
| for (i = 0; i < ARRAY_SIZE(firmwares); i++) { |
| if (firmwares[i].fw) |
| release_firmware(firmwares[i].fw); |
| } |
| led_trigger_unregister_simple(ledtrig_tx); |
| } |
| |
| module_param_named(debug, at76_debug, int, 0600); |
| MODULE_PARM_DESC(debug, "Debugging level"); |
| |
| module_init(at76_mod_init); |
| module_exit(at76_mod_exit); |
| |
| MODULE_AUTHOR("Oliver Kurth <oku@masqmail.cx>"); |
| MODULE_AUTHOR("Joerg Albert <joerg.albert@gmx.de>"); |
| MODULE_AUTHOR("Alex <alex@foogod.com>"); |
| MODULE_AUTHOR("Nick Jones"); |
| MODULE_AUTHOR("Balint Seeber <n0_5p4m_p13453@hotmail.com>"); |
| MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>"); |
| MODULE_DESCRIPTION(DRIVER_DESC); |
| MODULE_LICENSE("GPL"); |