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-rw-r--r--net/mac80211/ieee80211_i.h1
-rw-r--r--net/mac80211/iface.c16
-rw-r--r--net/mac80211/mlme.c38
-rw-r--r--net/mac80211/scan.c12
-rw-r--r--net/mac80211/wme.c9
5 files changed, 53 insertions, 23 deletions
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index ecbc8e0cb3e7..fbb91f1aebb2 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -972,6 +972,7 @@ int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata,
char *ie, size_t len);
void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
+void ieee80211_scan_failed(struct ieee80211_local *local);
int ieee80211_start_scan(struct ieee80211_sub_if_data *scan_sdata,
struct cfg80211_scan_request *req);
struct ieee80211_bss *
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 2acc416e77e1..f9f27b9cadbe 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -370,6 +370,18 @@ static int ieee80211_stop(struct net_device *dev)
rcu_read_unlock();
/*
+ * Announce that we are leaving the network, in case we are a
+ * station interface type. This must be done before removing
+ * all stations associated with sta_info_flush, otherwise STA
+ * information will be gone and no announce being done.
+ */
+ if (sdata->vif.type == NL80211_IFTYPE_STATION) {
+ if (sdata->u.mgd.state != IEEE80211_STA_MLME_DISABLED)
+ ieee80211_sta_deauthenticate(sdata,
+ WLAN_REASON_DEAUTH_LEAVING);
+ }
+
+ /*
* Remove all stations associated with this interface.
*
* This must be done before calling ops->remove_interface()
@@ -454,10 +466,6 @@ static int ieee80211_stop(struct net_device *dev)
netif_addr_unlock_bh(local->mdev);
break;
case NL80211_IFTYPE_STATION:
- /* Announce that we are leaving the network. */
- if (sdata->u.mgd.state != IEEE80211_STA_MLME_DISABLED)
- ieee80211_sta_deauthenticate(sdata,
- WLAN_REASON_DEAUTH_LEAVING);
memset(sdata->u.mgd.bssid, 0, ETH_ALEN);
del_timer_sync(&sdata->u.mgd.chswitch_timer);
del_timer_sync(&sdata->u.mgd.timer);
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 391445c6b892..841b8450b3de 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -417,9 +417,6 @@ static void ieee80211_sta_wmm_params(struct ieee80211_local *local,
memset(&params, 0, sizeof(params));
- if (!local->ops->conf_tx)
- return;
-
local->wmm_acm = 0;
for (; left >= 4; left -= 4, pos += 4) {
int aci = (pos[0] >> 5) & 0x03;
@@ -427,26 +424,26 @@ static void ieee80211_sta_wmm_params(struct ieee80211_local *local,
int queue;
switch (aci) {
- case 1:
+ case 1: /* AC_BK */
queue = 3;
if (acm)
- local->wmm_acm |= BIT(0) | BIT(3);
+ local->wmm_acm |= BIT(1) | BIT(2); /* BK/- */
break;
- case 2:
+ case 2: /* AC_VI */
queue = 1;
if (acm)
- local->wmm_acm |= BIT(4) | BIT(5);
+ local->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */
break;
- case 3:
+ case 3: /* AC_VO */
queue = 0;
if (acm)
- local->wmm_acm |= BIT(6) | BIT(7);
+ local->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */
break;
- case 0:
+ case 0: /* AC_BE */
default:
queue = 2;
if (acm)
- local->wmm_acm |= BIT(1) | BIT(2);
+ local->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */
break;
}
@@ -460,9 +457,8 @@ static void ieee80211_sta_wmm_params(struct ieee80211_local *local,
local->mdev->name, queue, aci, acm, params.aifs, params.cw_min,
params.cw_max, params.txop);
#endif
- /* TODO: handle ACM (block TX, fallback to next lowest allowed
- * AC for now) */
- if (local->ops->conf_tx(local_to_hw(local), queue, &params)) {
+ if (local->ops->conf_tx &&
+ local->ops->conf_tx(local_to_hw(local), queue, &params)) {
printk(KERN_DEBUG "%s: failed to set TX queue "
"parameters for queue %d\n", local->mdev->name, queue);
}
@@ -1724,7 +1720,10 @@ static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata)
local->int_scan_req.ssids[0].ssid_len = 0;
else
local->int_scan_req.ssids[0].ssid_len = ifmgd->ssid_len;
- ieee80211_start_scan(sdata, &local->int_scan_req);
+
+ if (ieee80211_start_scan(sdata, &local->int_scan_req))
+ ieee80211_scan_failed(local);
+
ifmgd->state = IEEE80211_STA_MLME_AUTHENTICATE;
set_bit(IEEE80211_STA_REQ_AUTH, &ifmgd->request);
} else {
@@ -1761,7 +1760,14 @@ static void ieee80211_sta_work(struct work_struct *work)
ifmgd->state != IEEE80211_STA_MLME_AUTHENTICATE &&
ifmgd->state != IEEE80211_STA_MLME_ASSOCIATE &&
test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifmgd->request)) {
- ieee80211_start_scan(sdata, local->scan_req);
+ /*
+ * The call to ieee80211_start_scan can fail but ieee80211_request_scan
+ * (which queued ieee80211_sta_work) did not return an error. Thus, call
+ * ieee80211_scan_failed here if ieee80211_start_scan fails in order to
+ * notify the scan requester.
+ */
+ if (ieee80211_start_scan(sdata, local->scan_req))
+ ieee80211_scan_failed(local);
return;
}
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index 0e81e1633a66..5030a3c87509 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -202,6 +202,18 @@ ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
return RX_QUEUED;
}
+void ieee80211_scan_failed(struct ieee80211_local *local)
+{
+ if (WARN_ON(!local->scan_req))
+ return;
+
+ /* notify cfg80211 about the failed scan */
+ if (local->scan_req != &local->int_scan_req)
+ cfg80211_scan_done(local->scan_req, true);
+
+ local->scan_req = NULL;
+}
+
void ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
{
struct ieee80211_local *local = hw_to_local(hw);
diff --git a/net/mac80211/wme.c b/net/mac80211/wme.c
index 093a4ab7f28b..0b8ad1f4ecdd 100644
--- a/net/mac80211/wme.c
+++ b/net/mac80211/wme.c
@@ -99,10 +99,13 @@ static u16 classify80211(struct ieee80211_local *local, struct sk_buff *skb)
/* in case we are a client verify acm is not set for this ac */
while (unlikely(local->wmm_acm & BIT(skb->priority))) {
if (wme_downgrade_ac(skb)) {
- /* The old code would drop the packet in this
- * case.
+ /*
+ * This should not really happen. The AP has marked all
+ * lower ACs to require admission control which is not
+ * a reasonable configuration. Allow the frame to be
+ * transmitted using AC_BK as a workaround.
*/
- return 0;
+ break;
}
}
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