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authorDavid S. Miller <davem@davemloft.net>2012-06-06 13:18:40 -0700
committerDavid S. Miller <davem@davemloft.net>2012-06-06 13:30:02 -0700
commitda2e852612967a53d17de930929574444a67fb52 (patch)
tree699fe0a30f7d5579ec4322fb6299c4cb56eb6457 /net
parent55432d2b543a4b6dfae54f5c432a566877a85d90 (diff)
parent4e924fec591ef75076eab95954d90411862d3a87 (diff)
Merge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
John Linville says: ==================== Amitkumar Karwar gives us a cfg80211 fix that changes some state tracking in order to avoid a WARNING. Arik Nemtsov provide a mac80211 fix for an RCU-related race. Avinash Patil shares a pair of mwifiex fixes, one which invalidates some stale configuration data before a channel change and another to restrict hidden SSID support to zero-length SSIDs only. Chun-Yeow Yeoh brings a mac80211 fix for a mesh problem triggered when combining multiple mesh networks into one. Felix Fietkau provides a mac80211 lockdep fix. Joe Perches fixes a couple of thinkos related to bitwise operations. Johannes Berg comes through with a flurry of fixes. The iwlwifi ones address a problem Linus recently reported, and some of the fallout discovered while fixing it. The mac80211 fix properly cleans-up remain-on-channel work on an interface that is stopped. The others are clean-ups for regressions caused by stricter checking of possible virtual interfaces supported by wireless drivers. Meenakshi Venkataraman provides a mac80211 fix for an off-by-one error. Seth Forshee provides a fix to make the wireless adapters used in some Mac boxes work after being in S3 power saving state. Stanislaw Gruszka offers a copule of fixes, a fix for a mac80211 scanning regression and an rt2x00 fix to avoid some lockdep spew. Last but not least, Vinicius Costa Gomes provides a bluetooth fix for a typo that "was preventing important features of Bluetooth from working". ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/bluetooth/af_bluetooth.c2
-rw-r--r--net/mac80211/agg-rx.c7
-rw-r--r--net/mac80211/cfg.c6
-rw-r--r--net/mac80211/iface.c12
-rw-r--r--net/mac80211/mlme.c36
-rw-r--r--net/mac80211/offchannel.c16
-rw-r--r--net/mac80211/sta_info.c4
-rw-r--r--net/mac80211/tx.c9
-rw-r--r--net/mac80211/util.c2
-rw-r--r--net/wireless/ibss.c6
-rw-r--r--net/wireless/util.c19
11 files changed, 97 insertions, 22 deletions
diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c
index 46e7f86acfc..3e18af4dadc 100644
--- a/net/bluetooth/af_bluetooth.c
+++ b/net/bluetooth/af_bluetooth.c
@@ -210,7 +210,7 @@ struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock)
}
if (sk->sk_state == BT_CONNECTED || !newsock ||
- test_bit(BT_DEFER_SETUP, &bt_sk(parent)->flags)) {
+ test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags)) {
bt_accept_unlink(sk);
if (newsock)
sock_graft(sk, newsock);
diff --git a/net/mac80211/agg-rx.c b/net/mac80211/agg-rx.c
index 26ddb699d69..c649188314c 100644
--- a/net/mac80211/agg-rx.c
+++ b/net/mac80211/agg-rx.c
@@ -145,15 +145,20 @@ static void sta_rx_agg_session_timer_expired(unsigned long data)
struct tid_ampdu_rx *tid_rx;
unsigned long timeout;
+ rcu_read_lock();
tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[*ptid]);
- if (!tid_rx)
+ if (!tid_rx) {
+ rcu_read_unlock();
return;
+ }
timeout = tid_rx->last_rx + TU_TO_JIFFIES(tid_rx->timeout);
if (time_is_after_jiffies(timeout)) {
mod_timer(&tid_rx->session_timer, timeout);
+ rcu_read_unlock();
return;
}
+ rcu_read_unlock();
#ifdef CONFIG_MAC80211_HT_DEBUG
printk(KERN_DEBUG "rx session timer expired on tid %d\n", (u16)*ptid);
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 495831ee48f..e9cecca5c44 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -533,16 +533,16 @@ static void ieee80211_get_et_stats(struct wiphy *wiphy,
sinfo.filled = 0;
sta_set_sinfo(sta, &sinfo);
- if (sinfo.filled | STATION_INFO_TX_BITRATE)
+ if (sinfo.filled & STATION_INFO_TX_BITRATE)
data[i] = 100000 *
cfg80211_calculate_bitrate(&sinfo.txrate);
i++;
- if (sinfo.filled | STATION_INFO_RX_BITRATE)
+ if (sinfo.filled & STATION_INFO_RX_BITRATE)
data[i] = 100000 *
cfg80211_calculate_bitrate(&sinfo.rxrate);
i++;
- if (sinfo.filled | STATION_INFO_SIGNAL_AVG)
+ if (sinfo.filled & STATION_INFO_SIGNAL_AVG)
data[i] = (u8)sinfo.signal_avg;
i++;
} else {
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index d4c19a7773d..8664111d056 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -637,6 +637,18 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
ieee80211_configure_filter(local);
break;
default:
+ mutex_lock(&local->mtx);
+ if (local->hw_roc_dev == sdata->dev &&
+ local->hw_roc_channel) {
+ /* ignore return value since this is racy */
+ drv_cancel_remain_on_channel(local);
+ ieee80211_queue_work(&local->hw, &local->hw_roc_done);
+ }
+ mutex_unlock(&local->mtx);
+
+ flush_work(&local->hw_roc_start);
+ flush_work(&local->hw_roc_done);
+
flush_work(&sdata->work);
/*
* When we get here, the interface is marked down.
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 04c30630898..d94627c2929 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1220,6 +1220,22 @@ static void ieee80211_sta_wmm_params(struct ieee80211_local *local,
sdata->vif.bss_conf.qos = true;
}
+static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
+{
+ lockdep_assert_held(&sdata->local->mtx);
+
+ sdata->u.mgd.flags &= ~(IEEE80211_STA_CONNECTION_POLL |
+ IEEE80211_STA_BEACON_POLL);
+ ieee80211_run_deferred_scan(sdata->local);
+}
+
+static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
+{
+ mutex_lock(&sdata->local->mtx);
+ __ieee80211_stop_poll(sdata);
+ mutex_unlock(&sdata->local->mtx);
+}
+
static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
u16 capab, bool erp_valid, u8 erp)
{
@@ -1285,8 +1301,7 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE;
/* just to be sure */
- sdata->u.mgd.flags &= ~(IEEE80211_STA_CONNECTION_POLL |
- IEEE80211_STA_BEACON_POLL);
+ ieee80211_stop_poll(sdata);
ieee80211_led_assoc(local, 1);
@@ -1456,8 +1471,7 @@ static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata)
return;
}
- ifmgd->flags &= ~(IEEE80211_STA_CONNECTION_POLL |
- IEEE80211_STA_BEACON_POLL);
+ __ieee80211_stop_poll(sdata);
mutex_lock(&local->iflist_mtx);
ieee80211_recalc_ps(local, -1);
@@ -1477,7 +1491,6 @@ static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata)
round_jiffies_up(jiffies +
IEEE80211_CONNECTION_IDLE_TIME));
out:
- ieee80211_run_deferred_scan(local);
mutex_unlock(&local->mtx);
}
@@ -2408,7 +2421,11 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
net_dbg_ratelimited("%s: cancelling probereq poll due to a received beacon\n",
sdata->name);
#endif
+ mutex_lock(&local->mtx);
ifmgd->flags &= ~IEEE80211_STA_BEACON_POLL;
+ ieee80211_run_deferred_scan(local);
+ mutex_unlock(&local->mtx);
+
mutex_lock(&local->iflist_mtx);
ieee80211_recalc_ps(local, -1);
mutex_unlock(&local->iflist_mtx);
@@ -2595,8 +2612,7 @@ static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
u8 frame_buf[DEAUTH_DISASSOC_LEN];
- ifmgd->flags &= ~(IEEE80211_STA_CONNECTION_POLL |
- IEEE80211_STA_BEACON_POLL);
+ ieee80211_stop_poll(sdata);
ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason,
false, frame_buf);
@@ -2874,8 +2890,7 @@ static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
u32 flags;
if (sdata->vif.type == NL80211_IFTYPE_STATION) {
- sdata->u.mgd.flags &= ~(IEEE80211_STA_BEACON_POLL |
- IEEE80211_STA_CONNECTION_POLL);
+ __ieee80211_stop_poll(sdata);
/* let's probe the connection once */
flags = sdata->local->hw.flags;
@@ -2944,7 +2959,10 @@ void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata)
if (test_and_clear_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running))
add_timer(&ifmgd->chswitch_timer);
ieee80211_sta_reset_beacon_monitor(sdata);
+
+ mutex_lock(&sdata->local->mtx);
ieee80211_restart_sta_timer(sdata);
+ mutex_unlock(&sdata->local->mtx);
}
#endif
diff --git a/net/mac80211/offchannel.c b/net/mac80211/offchannel.c
index f054e94901a..935aa4b6dee 100644
--- a/net/mac80211/offchannel.c
+++ b/net/mac80211/offchannel.c
@@ -234,6 +234,22 @@ static void ieee80211_hw_roc_done(struct work_struct *work)
return;
}
+ /* was never transmitted */
+ if (local->hw_roc_skb) {
+ u64 cookie;
+
+ cookie = local->hw_roc_cookie ^ 2;
+
+ cfg80211_mgmt_tx_status(local->hw_roc_dev, cookie,
+ local->hw_roc_skb->data,
+ local->hw_roc_skb->len, false,
+ GFP_KERNEL);
+
+ kfree_skb(local->hw_roc_skb);
+ local->hw_roc_skb = NULL;
+ local->hw_roc_skb_for_status = NULL;
+ }
+
if (!local->hw_roc_for_tx)
cfg80211_remain_on_channel_expired(local->hw_roc_dev,
local->hw_roc_cookie,
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index f5b1638fbf8..de455f8bbb9 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -378,7 +378,7 @@ static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU)
/* make the station visible */
sta_info_hash_add(local, sta);
- list_add(&sta->list, &local->sta_list);
+ list_add_rcu(&sta->list, &local->sta_list);
set_sta_flag(sta, WLAN_STA_INSERTED);
@@ -688,7 +688,7 @@ int __must_check __sta_info_destroy(struct sta_info *sta)
if (ret)
return ret;
- list_del(&sta->list);
+ list_del_rcu(&sta->list);
mutex_lock(&local->key_mtx);
for (i = 0; i < NUM_DEFAULT_KEYS; i++)
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 847215bb2a6..e453212fa17 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -1737,7 +1737,7 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
__le16 fc;
struct ieee80211_hdr hdr;
struct ieee80211s_hdr mesh_hdr __maybe_unused;
- struct mesh_path __maybe_unused *mppath = NULL;
+ struct mesh_path __maybe_unused *mppath = NULL, *mpath = NULL;
const u8 *encaps_data;
int encaps_len, skip_header_bytes;
int nh_pos, h_pos;
@@ -1803,8 +1803,11 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
goto fail;
}
rcu_read_lock();
- if (!is_multicast_ether_addr(skb->data))
- mppath = mpp_path_lookup(skb->data, sdata);
+ if (!is_multicast_ether_addr(skb->data)) {
+ mpath = mesh_path_lookup(skb->data, sdata);
+ if (!mpath)
+ mppath = mpp_path_lookup(skb->data, sdata);
+ }
/*
* Use address extension if it is a packet from
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index a44c6807df0..8dd4712620f 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1271,7 +1271,7 @@ int ieee80211_reconfig(struct ieee80211_local *local)
enum ieee80211_sta_state state;
for (state = IEEE80211_STA_NOTEXIST;
- state < sta->sta_state - 1; state++)
+ state < sta->sta_state; state++)
WARN_ON(drv_sta_state(local, sta->sdata, sta,
state, state + 1));
}
diff --git a/net/wireless/ibss.c b/net/wireless/ibss.c
index d2a19b0ff71..89baa332841 100644
--- a/net/wireless/ibss.c
+++ b/net/wireless/ibss.c
@@ -42,6 +42,7 @@ void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid)
cfg80211_hold_bss(bss_from_pub(bss));
wdev->current_bss = bss_from_pub(bss);
+ wdev->sme_state = CFG80211_SME_CONNECTED;
cfg80211_upload_connect_keys(wdev);
nl80211_send_ibss_bssid(wiphy_to_dev(wdev->wiphy), dev, bssid,
@@ -60,7 +61,7 @@ void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, gfp_t gfp)
struct cfg80211_event *ev;
unsigned long flags;
- CFG80211_DEV_WARN_ON(!wdev->ssid_len);
+ CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTING);
ev = kzalloc(sizeof(*ev), gfp);
if (!ev)
@@ -115,9 +116,11 @@ int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
#ifdef CONFIG_CFG80211_WEXT
wdev->wext.ibss.channel = params->channel;
#endif
+ wdev->sme_state = CFG80211_SME_CONNECTING;
err = rdev->ops->join_ibss(&rdev->wiphy, dev, params);
if (err) {
wdev->connect_keys = NULL;
+ wdev->sme_state = CFG80211_SME_IDLE;
return err;
}
@@ -169,6 +172,7 @@ static void __cfg80211_clear_ibss(struct net_device *dev, bool nowext)
}
wdev->current_bss = NULL;
+ wdev->sme_state = CFG80211_SME_IDLE;
wdev->ssid_len = 0;
#ifdef CONFIG_CFG80211_WEXT
if (!nowext)
diff --git a/net/wireless/util.c b/net/wireless/util.c
index 55d99466bab..8f2d68fc3a4 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -935,6 +935,7 @@ int cfg80211_can_change_interface(struct cfg80211_registered_device *rdev,
enum nl80211_iftype iftype)
{
struct wireless_dev *wdev_iter;
+ u32 used_iftypes = BIT(iftype);
int num[NUM_NL80211_IFTYPES];
int total = 1;
int i, j;
@@ -961,6 +962,7 @@ int cfg80211_can_change_interface(struct cfg80211_registered_device *rdev,
num[wdev_iter->iftype]++;
total++;
+ used_iftypes |= BIT(wdev_iter->iftype);
}
mutex_unlock(&rdev->devlist_mtx);
@@ -970,6 +972,7 @@ int cfg80211_can_change_interface(struct cfg80211_registered_device *rdev,
for (i = 0; i < rdev->wiphy.n_iface_combinations; i++) {
const struct ieee80211_iface_combination *c;
struct ieee80211_iface_limit *limits;
+ u32 all_iftypes = 0;
c = &rdev->wiphy.iface_combinations[i];
@@ -984,6 +987,7 @@ int cfg80211_can_change_interface(struct cfg80211_registered_device *rdev,
if (rdev->wiphy.software_iftypes & BIT(iftype))
continue;
for (j = 0; j < c->n_limits; j++) {
+ all_iftypes |= limits[j].types;
if (!(limits[j].types & BIT(iftype)))
continue;
if (limits[j].max < num[iftype])
@@ -991,7 +995,20 @@ int cfg80211_can_change_interface(struct cfg80211_registered_device *rdev,
limits[j].max -= num[iftype];
}
}
- /* yay, it fits */
+
+ /*
+ * Finally check that all iftypes that we're currently
+ * using are actually part of this combination. If they
+ * aren't then we can't use this combination and have
+ * to continue to the next.
+ */
+ if ((all_iftypes & used_iftypes) != used_iftypes)
+ goto cont;
+
+ /*
+ * This combination covered all interface types and
+ * supported the requested numbers, so we're good.
+ */
kfree(limits);
return 0;
cont: