From 0a9b5e17952ec7ce938645a23ba29bcfdb66c8d9 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 2 Jul 2009 18:26:18 +0200 Subject: [PATCH] cfg80211: refuse authenticating to same BSSID twice It is possible that there are different BSS structs with the same BSSID, but we cannot authenticate with multiple of them them because we need the BSSID to be unique for deauthenticating/disassociating. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/wireless/mlme.c | 22 +++++++++++++++------- 1 file changed, 15 insertions(+), 7 deletions(-) diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c index 1a92bf7597bf..020f33b38467 100644 --- a/net/wireless/mlme.c +++ b/net/wireless/mlme.c @@ -278,6 +278,21 @@ int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev, struct cfg80211_internal_bss *bss; int i, err, slot = -1, nfree = 0; + if (wdev->current_bss && + memcmp(bssid, wdev->current_bss->pub.bssid, ETH_ALEN) == 0) + return -EALREADY; + + for (i = 0; i < MAX_AUTH_BSSES; i++) { + if (wdev->authtry_bsses[i] && + memcmp(bssid, wdev->authtry_bsses[i]->pub.bssid, + ETH_ALEN) == 0) + return -EALREADY; + if (wdev->auth_bsses[i] && + memcmp(bssid, wdev->auth_bsses[i]->pub.bssid, + ETH_ALEN) == 0) + return -EALREADY; + } + memset(&req, 0, sizeof(req)); req.ie = ie; @@ -291,13 +306,6 @@ int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev, bss = bss_from_pub(req.bss); for (i = 0; i < MAX_AUTH_BSSES; i++) { - if (bss == wdev->auth_bsses[i]) { - err = -EALREADY; - goto out; - } - } - - for (i = 0; i < MAX_AUTH_BSSES; i++) { if (!wdev->auth_bsses[i] && !wdev->authtry_bsses[i]) { slot = i; nfree++; -- 2.11.0