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mwifiex: do not re-associate when already connected 

In managed mode if the driver is getting a re-associate command
from cfg80211, driver deauthenticates with the AP internally and
sends a disconnected event to cfg80211 before completion of its
association process. The disconnected event then modifies the
SSID length as wdev->ssid_len = 0. So, upon receiving the connect
result event from driver, cfg80211 is unable to get that BSS from
the device's BSS list and generates the following WARN_ON message.

WARNING: CPU: 0 PID: 857 at net/wireless/sme.c:658
         __cfg80211_connect_result+0x3a6/0x3e0 [cfg80211]()

Avoid re-association while the device is already associated to a
network. Also remove the internal deauthentication from the
association path.

Signed-off-by: Ujjal Roy <royujjal@gmail.com>
Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Ujjal Roy 2014-07-17 11:49:55 -07:00 committed by John W. Linville
parent 9435d09146
commit 71954f24c9
2 changed files with 5 additions and 13 deletions
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8
drivers/net/wireless/mwifiex/cfg80211.c
View File

@ -1604,9 +1604,6 @@ mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len,
return -EINVAL;
}
/* disconnect before try to associate */
mwifiex_deauthenticate(priv, NULL);
/* As this is new association, clear locally stored
* keys and security related flags */
priv->sec_info.wpa_enabled = false;
@ -1744,6 +1741,11 @@ mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
return -EINVAL;
}
if (priv->wdev && priv->wdev->current_bss) {
wiphy_warn(wiphy, "%s: already connected\n", dev->name);
return -EALREADY;
}
wiphy_dbg(wiphy, "info: Trying to associate to %s and bssid %pM\n",
(char *) sme->ssid, sme->bssid);

10
drivers/net/wireless/mwifiex/sta_ioctl.c
View File

@ -283,10 +283,6 @@ int mwifiex_bss_start(struct mwifiex_private *priv, struct cfg80211_bss *bss,
priv->bss_mode == NL80211_IFTYPE_P2P_CLIENT) {
u8 config_bands;
ret = mwifiex_deauthenticate(priv, NULL);
if (ret)
goto done;
if (!bss_desc)
return -1;
@ -345,12 +341,6 @@ int mwifiex_bss_start(struct mwifiex_private *priv, struct cfg80211_bss *bss,
goto done;
}
/* Exit Adhoc mode first */
dev_dbg(adapter->dev, "info: Sending Adhoc Stop\n");
ret = mwifiex_deauthenticate(priv, NULL);
if (ret)
goto done;
priv->adhoc_is_link_sensed = false;
ret = mwifiex_check_network_compatibility(priv, bss_desc);