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cfg80211: keep track of current_bss for userspace SME

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When a userspace SME is active, we're currently not
keeping track of the BSS properly for reporting the
current link and for internal use. Additionally, it
looks like there is a possible BSS leak in that the
BSS never gets removed from auth_bsses[]. To fix it,
pass the BSS struct to __cfg80211_connect_result in
this case.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg
2009-07-29 11:23:49 +02:00
committed by John W. Linville
parent 97af743207
commit df7fc0f973
4 changed files with 51 additions and 33 deletions
Download Patch File Download Diff File Expand all files Collapse all files

38
net/wireless/mlme.c
View File

@@ -61,7 +61,7 @@ void cfg80211_send_rx_assoc(struct net_device *dev, const u8 *buf, size_t len)
struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
u8 *ie = mgmt->u.assoc_resp.variable;
int i, ieoffs = offsetof(struct ieee80211_mgmt, u.assoc_resp.variable);
bool done;
struct cfg80211_internal_bss *bss = NULL;
wdev_lock(wdev);
@@ -69,22 +69,32 @@ void cfg80211_send_rx_assoc(struct net_device *dev, const u8 *buf, size_t len)
nl80211_send_rx_assoc(rdev, dev, buf, len, GFP_KERNEL);
__cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, ie, len - ieoffs,
status_code,
status_code == WLAN_STATUS_SUCCESS);
if (status_code == WLAN_STATUS_SUCCESS) {
for (i = 0; wdev->current_bss && i < MAX_AUTH_BSSES; i++) {
if (wdev->auth_bsses[i] == wdev->current_bss) {
cfg80211_unhold_bss(wdev->auth_bsses[i]);
cfg80211_put_bss(&wdev->auth_bsses[i]->pub);
for (i = 0; i < MAX_AUTH_BSSES; i++) {
if (!wdev->auth_bsses[i])
continue;
if (memcmp(wdev->auth_bsses[i]->pub.bssid, mgmt->bssid,
ETH_ALEN) == 0) {
bss = wdev->auth_bsses[i];
wdev->auth_bsses[i] = NULL;
done = true;
/* additional reference to drop hold */
cfg80211_ref_bss(bss);
break;
}
}
WARN_ON(!done);
WARN_ON(!bss);
}
/* this consumes one bss reference (unless bss is NULL) */
__cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, ie, len - ieoffs,
status_code,
status_code == WLAN_STATUS_SUCCESS,
bss ? &bss->pub : NULL);
/* drop hold now, and also reference acquired above */
if (bss) {
cfg80211_unhold_bss(bss);
cfg80211_put_bss(&bss->pub);
}
wdev_unlock(wdev);
@@ -144,7 +154,7 @@ static void __cfg80211_send_deauth(struct net_device *dev,
} else if (wdev->sme_state == CFG80211_SME_CONNECTING) {
__cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0,
WLAN_STATUS_UNSPECIFIED_FAILURE,
false);
false, NULL);
}
}
@@ -241,7 +251,7 @@ void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr)
if (wdev->sme_state == CFG80211_SME_CONNECTING)
__cfg80211_connect_result(dev, addr, NULL, 0, NULL, 0,
WLAN_STATUS_UNSPECIFIED_FAILURE,
false);
false, NULL);
for (i = 0; addr && i < MAX_AUTH_BSSES; i++) {
if (wdev->authtry_bsses[i] &&
@@ -275,7 +285,7 @@ void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr)
if (wdev->sme_state == CFG80211_SME_CONNECTING)
__cfg80211_connect_result(dev, addr, NULL, 0, NULL, 0,
WLAN_STATUS_UNSPECIFIED_FAILURE,
false);
false, NULL);
for (i = 0; addr && i < MAX_AUTH_BSSES; i++) {
if (wdev->auth_bsses[i] &&