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staging: brcm80211: bug fix for n_ssids usage and update drv_info

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-update drv_info so it's visible in "ethtool -i" output
-remove n_ssids usage. Fixes nullptr deref bug seen before.

Signed-off-by: Grant Grundler <grundler@chromium.org>
Acked-by: Nohee Ko <noheek@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
nohee ko 2010-10-05 18:05:04 -07:00 committed by Greg Kroah-Hartman
parent 52b0e80e72
commit 93ad12cf1a
3 changed files with 23 additions and 27 deletions
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10
drivers/staging/brcm80211/brcmfmac/dhd_linux.c
View File

@ -27,14 +27,14 @@
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/mmc/sdio_func.h>
#include <linux/random.h>
#include <linux/spinlock.h>
#include <linux/ethtool.h>
#include <linux/fcntl.h>
#include <linux/fs.h>
#include <asm/uaccess.h>
#include <asm/unaligned.h>
#include <linux/uaccess.h>
#include <bcmutils.h>
#include <bcmendian.h>
@ -185,6 +185,8 @@ MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN fullmac driver.");
MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN fullmac cards");
MODULE_LICENSE("Dual BSD/GPL");
#define DRV_MODULE_NAME "brcmfmac"
/* Linux wireless extension support */
#if defined(CONFIG_WIRELESS_EXT)
#include <wl_iw.h>
@ -1511,8 +1513,10 @@ static void dhd_ethtool_get_drvinfo(struct net_device *net,
{
dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
sprintf(info->driver, "wl");
sprintf(info->driver, DRV_MODULE_NAME);
sprintf(info->version, "%lu", dhd->pub.drv_version);
sprintf(info->fw_version, "%s", wl_cfg80211_get_fwname());
sprintf(info->bus_info, "%s", dev_name(&wl_cfg80211_get_sdio_func()->dev));
}
struct ethtool_ops dhd_ethtool_ops = {

39
drivers/staging/brcm80211/brcmfmac/wl_cfg80211.c
View File

@ -151,7 +151,7 @@ static int32 wl_notify_mic_status(struct wl_priv *wl, struct net_device *ndev,
/*
** register/deregister sdio function
*/
static struct sdio_func *wl_sdio_func(void);
struct sdio_func *wl_cfg80211_get_sdio_func(void);
static void wl_clear_sdio_func(void);
/*
@ -754,7 +754,6 @@ __wl_cfg80211_scan(struct wiphy *wiphy, struct net_device *ndev,
struct wl_priv *wl = ndev_to_wl(ndev);
struct cfg80211_ssid *ssids;
struct wl_scan_req *sr = wl_to_sr(wl);
uint32 n_ssids;
bool iscan_req;
bool spec_scan;
int32 err = 0;
@ -773,8 +772,7 @@ __wl_cfg80211_scan(struct wiphy *wiphy, struct net_device *ndev,
spec_scan = FALSE;
if (request) { /* scan bss */
ssids = request->ssids;
n_ssids = min(request->n_ssids, WL_NUM_SCAN_MAX);
if (wl->iscan_on && n_ssids && !ssids->ssid_len) { /* for
if (wl->iscan_on && (!ssids || !ssids->ssid_len)) { /* for
* specific scan,
* ssids->ssid_len has
* non-zero(ssid string)
@ -788,7 +786,6 @@ __wl_cfg80211_scan(struct wiphy *wiphy, struct net_device *ndev,
} else { /* scan in ibss */
/* we don't do iscan in ibss */
ssids = this_ssid;
n_ssids = 1;
}
wl->scan_request = request;
set_bit(WL_STATUS_SCANNING, &wl->status);
@ -798,24 +795,18 @@ __wl_cfg80211_scan(struct wiphy *wiphy, struct net_device *ndev,
else
goto scan_out;
} else {
WL_DBG(("n_ssid (%d), ssid \"%s\", ssid_len (%d)\n",
n_ssids, ssids->ssid, ssids->ssid_len));
WL_DBG(("ssid \"%s\", ssid_len (%d)\n",
ssids->ssid, ssids->ssid_len));
memset(&sr->ssid, 0, sizeof(sr->ssid));
if (n_ssids) {
sr->ssid.SSID_len =
sr->ssid.SSID_len =
MIN(sizeof(sr->ssid.SSID), ssids->ssid_len);
if (sr->ssid.SSID_len) {
memcpy(sr->ssid.SSID, ssids->ssid,
sr->ssid.SSID_len);
sr->ssid.SSID_len = htod32(sr->ssid.SSID_len);
WL_DBG(("Specific scan ssid=\"%s\" len=%d\n",
if (sr->ssid.SSID_len) {
memcpy(sr->ssid.SSID, ssids->ssid, sr->ssid.SSID_len);
sr->ssid.SSID_len = htod32(sr->ssid.SSID_len);
WL_DBG(("Specific scan ssid=\"%s\" len=%d\n",
sr->ssid.SSID, sr->ssid.SSID_len));
spec_scan = TRUE;
} else {
WL_DBG(("Broadcast scan\n"));
}
spec_scan = TRUE;
} else {
/* broadcast scan */
WL_DBG(("Broadcast scan\n"));
}
WL_DBG(("sr->ssid.SSID_len (%d)\n", sr->ssid.SSID_len));
@ -3078,8 +3069,8 @@ int32 wl_cfg80211_attach(struct net_device *ndev, void *data)
WL_ERR(("wl_cfg80211_dev is invalid\n"));
return -ENOMEM;
}
WL_DBG(("func %p\n", wl_sdio_func()));
wdev = wl_alloc_wdev(sizeof(struct wl_iface), &wl_sdio_func()->dev);
WL_DBG(("func %p\n", wl_cfg80211_get_sdio_func()));
wdev = wl_alloc_wdev(sizeof(struct wl_iface), &wl_cfg80211_get_sdio_func()->dev);
if (unlikely(IS_ERR(wdev)))
return -ENOMEM;
@ -3242,7 +3233,7 @@ static void wl_clear_sdio_func(void)
cfg80211_sdio_func = NULL;
}
static struct sdio_func *wl_sdio_func(void)
struct sdio_func *wl_cfg80211_get_sdio_func(void)
{
return cfg80211_sdio_func;
}
@ -3964,7 +3955,7 @@ void *wl_cfg80211_request_fw(s8 *file_name)
if (unlikely
(err =
request_firmware(&wl->fw->fw_entry, file_name,
&wl_sdio_func()->dev))) {
&wl_cfg80211_get_sdio_func()->dev))) {
WL_ERR(("Could not download fw (%d)\n", err));
goto req_fw_out;
}
@ -3978,7 +3969,7 @@ void *wl_cfg80211_request_fw(s8 *file_name)
if (unlikely
(err =
request_firmware(&wl->fw->fw_entry, file_name,
&wl_sdio_func()->dev))) {
&wl_cfg80211_get_sdio_func()->dev))) {
WL_ERR(("Could not download nvram (%d)\n", err));
goto req_fw_out;
}

1
drivers/staging/brcm80211/brcmfmac/wl_cfg80211.h
View File

@ -366,6 +366,7 @@ extern void wl_cfg80211_detach(void);
extern void wl_cfg80211_event(struct net_device *ndev, const wl_event_msg_t *e,
void *data);
extern void wl_cfg80211_sdio_func(void *func); /* set sdio function info */
extern struct sdio_func *wl_cfg80211_get_sdio_func(void); /* set sdio function info */
extern int32 wl_cfg80211_up(void); /* dongle up */
extern int32 wl_cfg80211_down(void); /* dongle down */
extern void wl_cfg80211_dbg_level(uint32 level); /* set dongle