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mwifiex: fix simultaneous assoc and scan issue 

When scan and assoc (infra/ibss) commands are simultaneously
given in two terminals, association response is erroneously
served while serving the scan response.

mwifiex_cfg80211_results() is the common routine for sending
ioctl (scan, assoc etc.) results to cfg80211 stack. In above
scenario even if the common routine is called for scan ioctl
context, it also tries to send information about assoc ioctl to
cfg80211 because "priv->assoc_request/priv->ibss_join_request"
flag is on at that time.

Fix the issue by updating request variable after assoc handling
and modifying the variable check in mwifiex_cfg80211_results.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kiran Divekar <dkiran@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Amitkumar Karwar 2011-05-03 20:11:45 -07:00 committed by John W. Linville
parent 85e09b4040
commit 57f16b5da0
2 changed files with 9 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/net/wireless/mwifiex/cfg80211.c
View File

@ -1044,7 +1044,7 @@ mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
goto done;
}
priv->assoc_request = 1;
priv->assoc_request = -EINPROGRESS;
wiphy_dbg(wiphy, "info: Trying to associate to %s and bssid %pM\n",
(char *) sme->ssid, sme->bssid);
@ -1052,6 +1052,7 @@ mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
ret = mwifiex_cfg80211_assoc(priv, sme->ssid_len, sme->ssid, sme->bssid,
priv->bss_mode, sme->channel, sme, 0);
priv->assoc_request = 1;
done:
priv->assoc_result = ret;
queue_work(priv->workqueue, &priv->cfg_workqueue);
@ -1080,7 +1081,7 @@ mwifiex_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
goto done;
}
priv->ibss_join_request = 1;
priv->ibss_join_request = -EINPROGRESS;
wiphy_dbg(wiphy, "info: trying to join to %s and bssid %pM\n",
(char *) params->ssid, params->bssid);
@ -1088,6 +1089,8 @@ mwifiex_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
ret = mwifiex_cfg80211_assoc(priv, params->ssid_len, params->ssid,
params->bssid, priv->bss_mode,
params->channel, NULL, params->privacy);
priv->ibss_join_request = 1;
done:
priv->ibss_join_result = ret;
queue_work(priv->workqueue, &priv->cfg_workqueue);
@ -1380,7 +1383,7 @@ done:
kfree(scan_req);
}
if (priv->assoc_request) {
if (priv->assoc_request == 1) {
if (!priv->assoc_result) {
cfg80211_connect_result(priv->netdev, priv->cfg_bssid,
NULL, 0, NULL, 0,
@ -1399,7 +1402,7 @@ done:
priv->assoc_result = 0;
}
if (priv->ibss_join_request) {
if (priv->ibss_join_request == 1) {
if (!priv->ibss_join_result) {
cfg80211_ibss_joined(priv->netdev, priv->cfg_bssid,
GFP_KERNEL);

4
drivers/net/wireless/mwifiex/main.h
View File

@ -479,9 +479,9 @@ struct mwifiex_private {
u8 report_scan_result;
struct cfg80211_scan_request *scan_request;
int scan_result_status;
bool assoc_request;
int assoc_request;
u16 assoc_result;
bool ibss_join_request;
int ibss_join_request;
u16 ibss_join_result;
bool disconnect;
u8 cfg_bssid[6];