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cfg80211: Allow reassociation to be requested with internal SME 

If the user space issues a NL80211_CMD_CONNECT with
NL80211_ATTR_PREV_BSSID when there is already a connection, allow this
to proceed as a reassociation instead of rejecting the new connect
command with EALREADY.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
[validate prev_bssid]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
steinar/wifi_calib_4_9_kernel
Jouni Malinen 2016-03-29 13:53:28 +03:00 committed by Johannes Berg
parent ba6fbacf9c
commit 4ce2bd9c4c
2 changed files with 14 additions and 3 deletions
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3
net/wireless/nl80211.c
View File

@ -8151,7 +8151,8 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
}
wdev_lock(dev->ieee80211_ptr);
err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
err = cfg80211_connect(rdev, dev, &connect, connkeys,
connect.prev_bssid);
wdev_unlock(dev->ieee80211_ptr);
if (err)
kzfree(connkeys);

14
net/wireless/sme.c
View File

@ -492,8 +492,18 @@ static int cfg80211_sme_connect(struct wireless_dev *wdev,
if (!rdev->ops->auth || !rdev->ops->assoc)
return -EOPNOTSUPP;
if (wdev->current_bss)
return -EALREADY;
if (wdev->current_bss) {
if (!prev_bssid)
return -EALREADY;
if (prev_bssid &&
!ether_addr_equal(prev_bssid, wdev->current_bss->pub.bssid))
return -ENOTCONN;
cfg80211_unhold_bss(wdev->current_bss);
cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
wdev->current_bss = NULL;
cfg80211_sme_free(wdev);
}
if (WARN_ON(wdev->conn))
return -EINPROGRESS;