linux/drivers/net/wireless/libertas/dev.h
Daniel Mack 7371400431 net/wireless/libertas: do not call wiphy_unregister() w/o wiphy_register()
The libertas driver calls wiphy_unregister() without a prior
wiphy_register() when a devices fails initialization. Fix this by
introducing a private flag.

[    9.310000] Unable to handle kernel NULL pointer dereference at virtual address 00000000

[...]

[    9.330000] [<c0311310>] (wiphy_unregister+0xfc/0x19c) from [<bf00c9ec>] (lbs_cfg_free+0x70/0x9c [libertas])
[    9.330000] [<bf00c9ec>] (lbs_cfg_free+0x70/0x9c [libertas]) from [<bf014fdc>] (lbs_remove_card+0x180/0x210 [libertas])
[    9.330000] [<bf014fdc>] (lbs_remove_card+0x180/0x210 [libertas]) from [<bf035394>] (if_sdio_probe+0xdc4/0xef4 [libertas_sdio])
[    9.330000] [<bf035394>] (if_sdio_probe+0xdc4/0xef4 [libertas_sdio]) from [<c0230d14>] (sdio_bus_probe+0xd4/0xf0)
[    9.330000] [<c0230d14>] (sdio_bus_probe+0xd4/0xf0) from [<c01a6034>] (driver_probe_device+0xa4/0x174)
[    9.330000] [<c01a6034>] (driver_probe_device+0xa4/0x174) from [<c01a6164>] (__driver_attach+0x60/0x84)
[    9.330000] [<c01a6164>] (__driver_attach+0x60/0x84) from [<c01a5854>] (bus_for_each_dev+0x4c/0x8c)
[    9.330000] [<c01a5854>] (bus_for_each_dev+0x4c/0x8c) from [<c01a50e4>] (bus_add_driver+0xa0/0x228)
[    9.330000] [<c01a50e4>] (bus_add_driver+0xa0/0x228) from [<c01a6470>] (driver_register+0xc0/0x150)
[    9.330000] [<c01a6470>] (driver_register+0xc0/0x150) from [<bf03a06c>] (if_sdio_init_module+0x6c/0x108 [libertas_sdio])
[    9.330000] [<bf03a06c>] (if_sdio_init_module+0x6c/0x108 [libertas_sdio]) from [<c00263ac>] (do_one_initcall+0x5c/0x1bc)
[    9.330000] [<c00263ac>] (do_one_initcall+0x5c/0x1bc) from [<c0069f80>] (sys_init_module+0xc0/0x1f0)
[    9.330000] [<c0069f80>] (sys_init_module+0xc0/0x1f0) from [<c0026f00>] (ret_fast_syscall+0x0/0x30)

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Cc: Dan Williams <dcbw@redhat.com>
Cc: John W. Linville <linville@tuxdriver.com>
Cc: Holger Schurig <hs4233@mail.mn-solutions.de>
Cc: Bing Zhao <bzhao@marvell.com>
Cc: libertas-dev@lists.infradead.org
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-03-30 15:37:37 -04:00

206 lines
4.8 KiB
C

/**
* This file contains definitions and data structures specific
* to Marvell 802.11 NIC. It contains the Device Information
* structure struct lbs_private..
*/
#ifndef _LBS_DEV_H_
#define _LBS_DEV_H_
#include "mesh.h"
#include "scan.h"
#include "assoc.h"
#include <linux/kfifo.h>
/** sleep_params */
struct sleep_params {
uint16_t sp_error;
uint16_t sp_offset;
uint16_t sp_stabletime;
uint8_t sp_calcontrol;
uint8_t sp_extsleepclk;
uint16_t sp_reserved;
};
/** Private structure for the MV device */
struct lbs_private {
/* Basic networking */
struct net_device *dev;
u32 connect_status;
int infra_open;
struct work_struct mcast_work;
u32 nr_of_multicastmacaddr;
u8 multicastlist[MRVDRV_MAX_MULTICAST_LIST_SIZE][ETH_ALEN];
/* CFG80211 */
struct wireless_dev *wdev;
bool wiphy_registered;
/* Mesh */
struct net_device *mesh_dev; /* Virtual device */
#ifdef CONFIG_LIBERTAS_MESH
u32 mesh_connect_status;
struct lbs_mesh_stats mstats;
int mesh_open;
uint16_t mesh_tlv;
u8 mesh_ssid[IEEE80211_MAX_SSID_LEN + 1];
u8 mesh_ssid_len;
#endif
/* Monitor mode */
struct net_device *rtap_net_dev;
u32 monitormode;
/* Debugfs */
struct dentry *debugfs_dir;
struct dentry *debugfs_debug;
struct dentry *debugfs_files[6];
struct dentry *events_dir;
struct dentry *debugfs_events_files[6];
struct dentry *regs_dir;
struct dentry *debugfs_regs_files[6];
/* Hardware debugging */
u32 mac_offset;
u32 bbp_offset;
u32 rf_offset;
struct lbs_offset_value offsetvalue;
/* Power management */
u16 psmode;
u32 psstate;
u8 needtowakeup;
/* Deep sleep */
int is_deep_sleep;
int is_auto_deep_sleep_enabled;
int wakeup_dev_required;
int is_activity_detected;
int auto_deep_sleep_timeout; /* in ms */
wait_queue_head_t ds_awake_q;
struct timer_list auto_deepsleep_timer;
/* Hardware access */
void *card;
u8 fw_ready;
u8 surpriseremoved;
int (*hw_host_to_card) (struct lbs_private *priv, u8 type, u8 *payload, u16 nb);
void (*reset_card) (struct lbs_private *priv);
int (*enter_deep_sleep) (struct lbs_private *priv);
int (*exit_deep_sleep) (struct lbs_private *priv);
int (*reset_deep_sleep_wakeup) (struct lbs_private *priv);
/* Adapter info (from EEPROM) */
u32 fwrelease;
u32 fwcapinfo;
u16 regioncode;
u8 current_addr[ETH_ALEN];
/* Command download */
u8 dnld_sent;
/* bit0 1/0=data_sent/data_tx_done,
bit1 1/0=cmd_sent/cmd_tx_done,
all other bits reserved 0 */
u16 seqnum;
struct cmd_ctrl_node *cmd_array;
struct cmd_ctrl_node *cur_cmd;
struct list_head cmdfreeq; /* free command buffers */
struct list_head cmdpendingq; /* pending command buffers */
wait_queue_head_t cmd_pending;
struct timer_list command_timer;
int cmd_timed_out;
/* Command responses sent from the hardware to the driver */
int cur_cmd_retcode;
u8 resp_idx;
u8 resp_buf[2][LBS_UPLD_SIZE];
u32 resp_len[2];
/* Events sent from hardware to driver */
struct kfifo event_fifo;
/** thread to service interrupts */
struct task_struct *main_thread;
wait_queue_head_t waitq;
struct workqueue_struct *work_thread;
/** Encryption stuff */
struct lbs_802_11_security secinfo;
struct enc_key wpa_mcast_key;
struct enc_key wpa_unicast_key;
u8 wpa_ie[MAX_WPA_IE_LEN];
u8 wpa_ie_len;
u16 wep_tx_keyidx;
struct enc_key wep_keys[4];
/* Wake On LAN */
uint32_t wol_criteria;
uint8_t wol_gpio;
uint8_t wol_gap;
/* Transmitting */
int tx_pending_len; /* -1 while building packet */
u8 tx_pending_buf[LBS_UPLD_SIZE];
/* protected by hard_start_xmit serialization */
u8 txretrycount;
struct sk_buff *currenttxskb;
/* Locks */
struct mutex lock;
spinlock_t driver_lock;
/* NIC/link operation characteristics */
u16 mac_control;
u8 radio_on;
u8 channel;
s16 txpower_cur;
s16 txpower_min;
s16 txpower_max;
/** Scanning */
struct delayed_work scan_work;
int scan_channel;
/* remember which channel was scanned last, != 0 if currently scanning */
u8 scan_ssid[IEEE80211_MAX_SSID_LEN + 1];
u8 scan_ssid_len;
/* Associating */
struct delayed_work assoc_work;
struct current_bss_params curbssparams;
u8 mode;
struct list_head network_list;
struct list_head network_free_list;
struct bss_descriptor *networks;
struct assoc_request * pending_assoc_req;
struct assoc_request * in_progress_assoc_req;
uint16_t enablehwauto;
/* ADHOC */
u16 beacon_period;
u8 beacon_enable;
u8 adhoccreate;
/* WEXT */
char name[DEV_NAME_LEN];
u8 nodename[16];
struct iw_statistics wstats;
u8 cur_rate;
#define MAX_REGION_CHANNEL_NUM 2
struct region_channel region_channel[MAX_REGION_CHANNEL_NUM];
/** Requested Signal Strength*/
u16 SNR[MAX_TYPE_B][MAX_TYPE_AVG];
u16 NF[MAX_TYPE_B][MAX_TYPE_AVG];
u8 RSSI[MAX_TYPE_B][MAX_TYPE_AVG];
u8 rawSNR[DEFAULT_DATA_AVG_FACTOR];
u8 rawNF[DEFAULT_DATA_AVG_FACTOR];
u16 nextSNRNF;
u16 numSNRNF;
};
extern struct cmd_confirm_sleep confirm_sleep;
#endif