[PATCH] Set ssid when authenticating

[PATCH] Set ssid when authenticating

[Marc Bornand]

When a connexion was established without going through
NL80211_CMD_CONNECT, the ssid was never set in the wireless_dev struct.
Now we set it during when an NL80211_CMD_AUTHENTICATE is issued.

It may be needed to test this on some additional hardware (tested with
iwlwifi and a AX201, and iwd on the userspace side), I could not test
things like roaming and p2p.

This applies to v6.2-rc7,
but I think it may also be interesting to backport it from 5.19 to 6.1

Reported-by: Yohan Prod'homme <kernel@zoddo.fr>
Fixes: 7b0a0e3c3a88260b6fcb017e49f198463aa62ed1
Cc: linux-wireless@vger.kernel.org
Cc: stable@vger.kernel.org
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216711
Signed-off-by: Marc Bornand <dev.mbornand@systemb.ch>
---
 net/wireless/nl80211.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 33a82ecab9d5..f1627ea542b9 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -10552,6 +10552,10 @@ static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
 		return -ENOENT;

 	wdev_lock(dev->ieee80211_ptr);
+
+	memcpy(dev->ieee80211_ptr->u.client.ssid, ssid, ssid_len);
+	dev->ieee80211_ptr->u.client.ssid_len = ssid_len;
+
 	err = cfg80211_mlme_auth(rdev, dev, &req);
 	wdev_unlock(dev->ieee80211_ptr);

@@ -11025,6 +11029,11 @@ static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
 	local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];

 	wdev_lock(dev->ieee80211_ptr);
+
+	if (reason_code == WLAN_REASON_DEAUTH_LEAVING) {
+		dev->ieee80211_ptr->u.client.ssid_len = 0;
+	}
+
 	err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
 				   local_state_change);
 	wdev_unlock(dev->ieee80211_ptr);
--
2.39.1