cfg80211: Allow reassociation in associated state
cfg80211 rejects all association requests when in associated state. This
prevents clean roaming within an ESS since one would first need to
disassociate before being able to request reassociation.
Accept the reassociation request and let the old association to be
dropped when the new one is completed. This fixes nl80211-based
roaming with the current snapshot version of wpa_supplicant (that has
code for requesting reassociation explicitly withthe previous BSSID
attribute).
Signed-off-by: Jouni Malinen <j@w1.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index 2610b74..622af56 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -446,12 +446,23 @@
struct cfg80211_assoc_request req;
struct cfg80211_internal_bss *bss;
int i, err, slot = -1;
+ bool was_connected = false;
ASSERT_WDEV_LOCK(wdev);
memset(&req, 0, sizeof(req));
- if (wdev->current_bss)
+ if (wdev->current_bss && prev_bssid &&
+ memcmp(wdev->current_bss->pub.bssid, prev_bssid, ETH_ALEN) == 0) {
+ /*
+ * Trying to reassociate: Allow this to proceed and let the old
+ * association to be dropped when the new one is completed.
+ */
+ if (wdev->sme_state == CFG80211_SME_CONNECTED) {
+ was_connected = true;
+ wdev->sme_state = CFG80211_SME_CONNECTING;
+ }
+ } else if (wdev->current_bss)
return -EALREADY;
req.ie = ie;
@@ -461,8 +472,11 @@
req.prev_bssid = prev_bssid;
req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
- if (!req.bss)
+ if (!req.bss) {
+ if (was_connected)
+ wdev->sme_state = CFG80211_SME_CONNECTED;
return -ENOENT;
+ }
bss = bss_from_pub(req.bss);
@@ -480,6 +494,8 @@
err = rdev->ops->assoc(&rdev->wiphy, dev, &req);
out:
+ if (err && was_connected)
+ wdev->sme_state = CFG80211_SME_CONNECTED;
/* still a reference in wdev->auth_bsses[slot] */
cfg80211_put_bss(req.bss);
return err;