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cfg80211: refuse authenticating to same BSSID twice

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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 <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2009-07-02 18:26:18 +02:00 committed by John W. Linville
parent 19957bb399
commit 0a9b5e1795
1 changed files with 15 additions and 7 deletions
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22
net/wireless/mlme.c
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@ -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;
@ -290,13 +305,6 @@ 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;