cfg80211: fix SME connect
There's a check saying
/* we're good if we have both BSSID and channel */
if (wdev->conn->params.bssid && wdev->conn->params.channel) {
but that isn't true -- we need the BSS struct. This leads
to errors such as
Trying to associate with 00:1b:53:11:dc:40 (SSID='TEST' freq=2412 MHz)
ioctl[SIOCSIWFREQ]: No such file or directory
ioctl[SIOCSIWESSID]: No such file or directory
Association request to the driver failed
Associated with 00:1b:53:11:dc:40
in wpa_supplicant, as reported by Holger.
Instead, we really need to have the BSS struct, and if we
don't, then we need to initiate a scan for it. But we may
already have the BSS struct here, so hang on to it if we
do and scan if we don't.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Tested-by: Holger Schurig <hs4233@mail.mn-solutions.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/wireless/sme.c b/net/wireless/sme.c
index 6830788..7fae7ee 100644
--- a/net/wireless/sme.c
+++ b/net/wireless/sme.c
@@ -188,7 +188,7 @@
rtnl_unlock();
}
-static bool cfg80211_get_conn_bss(struct wireless_dev *wdev)
+static struct cfg80211_bss *cfg80211_get_conn_bss(struct wireless_dev *wdev)
{
struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
struct cfg80211_bss *bss;
@@ -205,7 +205,7 @@
WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_PRIVACY,
capa);
if (!bss)
- return false;
+ return NULL;
memcpy(wdev->conn->bssid, bss->bssid, ETH_ALEN);
wdev->conn->params.bssid = wdev->conn->bssid;
@@ -213,14 +213,14 @@
wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
schedule_work(&rdev->conn_work);
- cfg80211_put_bss(bss);
- return true;
+ return bss;
}
static void __cfg80211_sme_scan_done(struct net_device *dev)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
+ struct cfg80211_bss *bss;
ASSERT_WDEV_LOCK(wdev);
@@ -234,7 +234,10 @@
wdev->conn->state != CFG80211_CONN_SCAN_AGAIN)
return;
- if (!cfg80211_get_conn_bss(wdev)) {
+ bss = cfg80211_get_conn_bss(wdev);
+ if (bss) {
+ cfg80211_put_bss(bss);
+ } else {
/* not found */
if (wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)
schedule_work(&rdev->conn_work);
@@ -670,6 +673,7 @@
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct ieee80211_channel *chan;
+ struct cfg80211_bss *bss = NULL;
int err;
ASSERT_WDEV_LOCK(wdev);
@@ -760,7 +764,7 @@
/* don't care about result -- but fill bssid & channel */
if (!wdev->conn->params.bssid || !wdev->conn->params.channel)
- cfg80211_get_conn_bss(wdev);
+ bss = cfg80211_get_conn_bss(wdev);
wdev->sme_state = CFG80211_SME_CONNECTING;
wdev->connect_keys = connkeys;
@@ -770,10 +774,11 @@
wdev->conn->prev_bssid_valid = true;
}
- /* we're good if we have both BSSID and channel */
- if (wdev->conn->params.bssid && wdev->conn->params.channel) {
+ /* we're good if we have a matching bss struct */
+ if (bss) {
wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
err = cfg80211_conn_do_work(wdev);
+ cfg80211_put_bss(bss);
} else {
/* otherwise we'll need to scan for the AP first */
err = cfg80211_conn_scan(wdev);
