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Diffstat (limited to 'net/wireless/sme.c')
-rw-r--r--net/wireless/sme.c104
1 files changed, 88 insertions, 16 deletions
diff --git a/net/wireless/sme.c b/net/wireless/sme.c
index 8a7dcbf9060..8e2ef54ea71 100644
--- a/net/wireless/sme.c
+++ b/net/wireless/sme.c
@@ -27,10 +27,10 @@ struct cfg80211_conn {
CFG80211_CONN_ASSOCIATE_NEXT,
CFG80211_CONN_ASSOCIATING,
} state;
- u8 bssid[ETH_ALEN];
+ u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
u8 *ie;
size_t ie_len;
- bool auto_auth;
+ bool auto_auth, prev_bssid_valid;
};
@@ -65,7 +65,6 @@ static int cfg80211_conn_scan(struct wireless_dev *wdev)
if (!request)
return -ENOMEM;
- request->channels = (void *)((char *)request + sizeof(*request));
if (wdev->conn->params.channel)
request->channels[0] = wdev->conn->params.channel;
else {
@@ -82,7 +81,7 @@ static int cfg80211_conn_scan(struct wireless_dev *wdev)
}
}
request->n_channels = n_channels;
- request->ssids = (void *)(request->channels + n_channels);
+ request->ssids = (void *)&request->channels[n_channels];
request->n_ssids = 1;
memcpy(request->ssids[0].ssid, wdev->conn->params.ssid,
@@ -110,6 +109,7 @@ static int cfg80211_conn_do_work(struct wireless_dev *wdev)
{
struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
struct cfg80211_connect_params *params;
+ const u8 *prev_bssid = NULL;
int err;
ASSERT_WDEV_LOCK(wdev);
@@ -135,15 +135,11 @@ static int cfg80211_conn_do_work(struct wireless_dev *wdev)
case CFG80211_CONN_ASSOCIATE_NEXT:
BUG_ON(!rdev->ops->assoc);
wdev->conn->state = CFG80211_CONN_ASSOCIATING;
- /*
- * We could, later, implement roaming here and then actually
- * set prev_bssid to non-NULL. But then we need to be aware
- * that some APs don't like that -- so we'd need to retry
- * the association.
- */
+ if (wdev->conn->prev_bssid_valid)
+ prev_bssid = wdev->conn->prev_bssid;
err = __cfg80211_mlme_assoc(rdev, wdev->netdev,
params->channel, params->bssid,
- NULL,
+ prev_bssid,
params->ssid, params->ssid_len,
params->ie, params->ie_len,
false, &params->crypto);
@@ -256,9 +252,11 @@ void cfg80211_sme_scan_done(struct net_device *dev)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
+ mutex_lock(&wiphy_to_dev(wdev->wiphy)->devlist_mtx);
wdev_lock(wdev);
__cfg80211_sme_scan_done(dev);
wdev_unlock(wdev);
+ mutex_unlock(&wiphy_to_dev(wdev->wiphy)->devlist_mtx);
}
void cfg80211_sme_rx_auth(struct net_device *dev,
@@ -314,6 +312,28 @@ void cfg80211_sme_rx_auth(struct net_device *dev,
}
}
+bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev)
+{
+ struct wiphy *wiphy = wdev->wiphy;
+ struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+
+ if (WARN_ON(!wdev->conn))
+ return false;
+
+ if (!wdev->conn->prev_bssid_valid)
+ return false;
+
+ /*
+ * Some stupid APs don't accept reassoc, so we
+ * need to fall back to trying regular assoc.
+ */
+ wdev->conn->prev_bssid_valid = false;
+ wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
+ schedule_work(&rdev->conn_work);
+
+ return true;
+}
+
void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
const u8 *req_ie, size_t req_ie_len,
const u8 *resp_ie, size_t resp_ie_len,
@@ -357,8 +377,11 @@ void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
memset(&wrqu, 0, sizeof(wrqu));
wrqu.ap_addr.sa_family = ARPHRD_ETHER;
- if (bssid && status == WLAN_STATUS_SUCCESS)
+ if (bssid && status == WLAN_STATUS_SUCCESS) {
memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
+ memcpy(wdev->wext.prev_bssid, bssid, ETH_ALEN);
+ wdev->wext.prev_bssid_valid = true;
+ }
wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
}
#endif
@@ -509,6 +532,8 @@ void __cfg80211_roamed(struct wireless_dev *wdev, const u8 *bssid,
memset(&wrqu, 0, sizeof(wrqu));
wrqu.ap_addr.sa_family = ARPHRD_ETHER;
memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
+ memcpy(wdev->wext.prev_bssid, bssid, ETH_ALEN);
+ wdev->wext.prev_bssid_valid = true;
wireless_send_event(wdev->netdev, SIOCGIWAP, &wrqu, NULL);
#endif
}
@@ -570,10 +595,30 @@ void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
wdev->ssid_len = 0;
if (wdev->conn) {
+ const u8 *bssid;
+ int ret;
+
kfree(wdev->conn->ie);
wdev->conn->ie = NULL;
kfree(wdev->conn);
wdev->conn = NULL;
+
+ /*
+ * If this disconnect was due to a disassoc, we
+ * we might still have an auth BSS around. For
+ * the userspace SME that's currently expected,
+ * but for the kernel SME (nl80211 CONNECT or
+ * wireless extensions) we want to clear up all
+ * state.
+ */
+ for (i = 0; i < MAX_AUTH_BSSES; i++) {
+ if (!wdev->auth_bsses[i])
+ continue;
+ bssid = wdev->auth_bsses[i]->pub.bssid;
+ ret = __cfg80211_mlme_deauth(rdev, dev, bssid, NULL, 0,
+ WLAN_REASON_DEAUTH_LEAVING);
+ WARN(ret, "deauth failed: %d\n", ret);
+ }
}
nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap);
@@ -621,9 +666,11 @@ EXPORT_SYMBOL(cfg80211_disconnected);
int __cfg80211_connect(struct cfg80211_registered_device *rdev,
struct net_device *dev,
struct cfg80211_connect_params *connect,
- struct cfg80211_cached_keys *connkeys)
+ struct cfg80211_cached_keys *connkeys,
+ const u8 *prev_bssid)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
+ struct ieee80211_channel *chan;
int err;
ASSERT_WDEV_LOCK(wdev);
@@ -631,6 +678,10 @@ int __cfg80211_connect(struct cfg80211_registered_device *rdev,
if (wdev->sme_state != CFG80211_SME_IDLE)
return -EALREADY;
+ chan = rdev_fixed_channel(rdev, wdev);
+ if (chan && chan != connect->channel)
+ return -EBUSY;
+
if (WARN_ON(wdev->connect_keys)) {
kfree(wdev->connect_keys);
wdev->connect_keys = NULL;
@@ -638,14 +689,28 @@ int __cfg80211_connect(struct cfg80211_registered_device *rdev,
if (connkeys && connkeys->def >= 0) {
int idx;
+ u32 cipher;
idx = connkeys->def;
+ cipher = connkeys->params[idx].cipher;
/* If given a WEP key we may need it for shared key auth */
- if (connkeys->params[idx].cipher == WLAN_CIPHER_SUITE_WEP40 ||
- connkeys->params[idx].cipher == WLAN_CIPHER_SUITE_WEP104) {
+ if (cipher == WLAN_CIPHER_SUITE_WEP40 ||
+ cipher == WLAN_CIPHER_SUITE_WEP104) {
connect->key_idx = idx;
connect->key = connkeys->params[idx].key;
connect->key_len = connkeys->params[idx].key_len;
+
+ /*
+ * If ciphers are not set (e.g. when going through
+ * iwconfig), we have to set them appropriately here.
+ */
+ if (connect->crypto.cipher_group == 0)
+ connect->crypto.cipher_group = cipher;
+
+ if (connect->crypto.n_ciphers_pairwise == 0) {
+ connect->crypto.n_ciphers_pairwise = 1;
+ connect->crypto.ciphers_pairwise[0] = cipher;
+ }
}
}
@@ -701,6 +766,11 @@ int __cfg80211_connect(struct cfg80211_registered_device *rdev,
wdev->sme_state = CFG80211_SME_CONNECTING;
wdev->connect_keys = connkeys;
+ if (prev_bssid) {
+ memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN);
+ wdev->conn->prev_bssid_valid = true;
+ }
+
/* we're good if we have both BSSID and channel */
if (wdev->conn->params.bssid && wdev->conn->params.channel) {
wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
@@ -751,9 +821,11 @@ int cfg80211_connect(struct cfg80211_registered_device *rdev,
{
int err;
+ mutex_lock(&rdev->devlist_mtx);
wdev_lock(dev->ieee80211_ptr);
- err = __cfg80211_connect(rdev, dev, connect, connkeys);
+ err = __cfg80211_connect(rdev, dev, connect, connkeys, NULL);
wdev_unlock(dev->ieee80211_ptr);
+ mutex_unlock(&rdev->devlist_mtx);
return err;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-04 10:24:16 +0000