Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (27 commits)
  ipv6: Don't pass invalid dst_entry pointer to dst_release().
  mlx4: fix kfree on error path in new_steering_entry()
  tcp: len check is unnecessarily devastating, change to WARN_ON
  sctp: malloc enough room for asconf-ack chunk
  sctp: fix auth_hmacs field's length of struct sctp_cookie
  net: Fix dev dev_ethtool_get_rx_csum() for forced NETIF_F_RXCSUM
  usbnet: use eth%d name for known ethernet devices
  starfire: clean up dma_addr_t size test
  iwlegacy: fix bugs in change_interface
  carl9170: Fix tx aggregation problems with some clients
  iwl3945: disable hw scan by default
  wireless: rt2x00: rt2800usb.c add and identify ids
  iwl3945: do not deprecate software scan
  mac80211: fix aggregation frame release during timeout
  cfg80211: fix BSS double-unlinking (continued)
  cfg80211:: fix possible NULL pointer dereference
  mac80211: fix possible NULL pointer dereference
  mac80211: fix NULL pointer dereference in ieee80211_key_alloc()
  ath9k: fix a chip wakeup related crash in ath9k_start
  mac80211: fix a crash in minstrel_ht in HT mode with no supported MCS rates
  ...

12 files changed, 69 insertions, 30 deletions

diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index b372fb8..2216620 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -186,6 +186,7 @@ static void hci_reset_req(struct hci_dev *hdev, unsigned long opt)
 	BT_DBG("%s %ld", hdev->name, opt);
 
 	/* Reset device */
+	set_bit(HCI_RESET, &hdev->flags);
 	hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL);
 }
 
@@ -213,8 +214,10 @@ static void hci_init_req(struct hci_dev *hdev, unsigned long opt)
 	/* Mandatory initialization */
 
 	/* Reset */
-	if (!test_bit(HCI_QUIRK_NO_RESET, &hdev->quirks))
+	if (!test_bit(HCI_QUIRK_NO_RESET, &hdev->quirks)) {
+			set_bit(HCI_RESET, &hdev->flags);
 			hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL);
+	}
 
 	/* Read Local Supported Features */
 	hci_send_cmd(hdev, HCI_OP_READ_LOCAL_FEATURES, 0, NULL);
@@ -584,6 +587,9 @@ static int hci_dev_do_close(struct hci_dev *hdev)
 	hci_req_cancel(hdev, ENODEV);
 	hci_req_lock(hdev);
 
+	/* Stop timer, it might be running */
+	del_timer_sync(&hdev->cmd_timer);
+
 	if (!test_and_clear_bit(HCI_UP, &hdev->flags)) {
 		hci_req_unlock(hdev);
 		return 0;
@@ -623,7 +629,6 @@ static int hci_dev_do_close(struct hci_dev *hdev)
 
 	/* Drop last sent command */
 	if (hdev->sent_cmd) {
-		del_timer_sync(&hdev->cmd_timer);
 		kfree_skb(hdev->sent_cmd);
 		hdev->sent_cmd = NULL;
 	}
@@ -1074,6 +1079,7 @@ static void hci_cmd_timer(unsigned long arg)
 
 	BT_ERR("%s command tx timeout", hdev->name);
 	atomic_set(&hdev->cmd_cnt, 1);
+	clear_bit(HCI_RESET, &hdev->flags);
 	tasklet_schedule(&hdev->cmd_task);
 }
 
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 3fbfa50..cebe7588 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -183,6 +183,8 @@ static void hci_cc_reset(struct hci_dev *hdev, struct sk_buff *skb)
 
 	BT_DBG("%s status 0x%x", hdev->name, status);
 
+	clear_bit(HCI_RESET, &hdev->flags);
+
 	hci_req_complete(hdev, HCI_OP_RESET, status);
 }
 
@@ -1847,7 +1849,7 @@ static inline void hci_cmd_status_evt(struct hci_dev *hdev, struct sk_buff *skb)
 	if (ev->opcode != HCI_OP_NOP)
 		del_timer(&hdev->cmd_timer);
 
-	if (ev->ncmd) {
+	if (ev->ncmd && !test_bit(HCI_RESET, &hdev->flags)) {
 		atomic_set(&hdev->cmd_cnt, 1);
 		if (!skb_queue_empty(&hdev->cmd_q))
 			tasklet_schedule(&hdev->cmd_task);
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index c9f9cec..ca27f3a 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -1116,7 +1116,9 @@ int l2cap_ertm_send(struct sock *sk)
 		bt_cb(skb)->tx_seq = pi->next_tx_seq;
 		pi->next_tx_seq = (pi->next_tx_seq + 1) % 64;
 
-		pi->unacked_frames++;
+		if (bt_cb(skb)->retries == 1)
+			pi->unacked_frames++;
+
 		pi->frames_sent++;
 
 		if (skb_queue_is_last(TX_QUEUE(sk), skb))
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index fc85e7a..f77308e 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -923,8 +923,9 @@ void __l2cap_sock_close(struct sock *sk, int reason)
 			rsp.status = cpu_to_le16(L2CAP_CS_NO_INFO);
 			l2cap_send_cmd(conn, l2cap_pi(sk)->ident,
 					L2CAP_CONN_RSP, sizeof(rsp), &rsp);
-		} else
-			l2cap_chan_del(sk, reason);
+		}
+
+		l2cap_chan_del(sk, reason);
 		break;
 
 	case BT_CONNECT:
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 0054c74..4476d8e 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -1230,6 +1230,8 @@ static int user_confirm_reply(struct sock *sk, u16 index, unsigned char *data,
 	if (!hdev)
 		return cmd_status(sk, index, mgmt_op, ENODEV);
 
+	hci_dev_lock_bh(hdev);
+
 	if (!test_bit(HCI_UP, &hdev->flags)) {
 		err = cmd_status(sk, index, mgmt_op, ENETDOWN);
 		goto failed;
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index dfa5beb..8b0d016 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -1003,7 +1003,8 @@ int tcp_fragment(struct sock *sk, struct sk_buff *skb, u32 len,
 	int nlen;
 	u8 flags;
 
-	BUG_ON(len > skb->len);
+	if (WARN_ON(len > skb->len))
+		return -EINVAL;
 
 	nsize = skb_headlen(skb) - len;
 	if (nsize < 0)
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 2b0c186..56fa125 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -503,6 +503,7 @@ static int tcp_v6_send_synack(struct sock *sk, struct request_sock *req,
 	dst = ip6_dst_lookup_flow(sk, &fl6, final_p, false);
 	if (IS_ERR(dst)) {
 		err = PTR_ERR(dst);
+		dst = NULL;
 		goto done;
 	}
 	skb = tcp_make_synack(sk, dst, req, rvp);
diff --git a/net/mac80211/key.c b/net/mac80211/key.c
index 8c02469..af3c564 100644
--- a/net/mac80211/key.c
+++ b/net/mac80211/key.c
@@ -342,7 +342,7 @@ struct ieee80211_key *ieee80211_key_alloc(u32 cipher, int idx, size_t key_len,
 		if (IS_ERR(key->u.ccmp.tfm)) {
 			err = PTR_ERR(key->u.ccmp.tfm);
 			kfree(key);
-			key = ERR_PTR(err);
+			return ERR_PTR(err);
 		}
 		break;
 	case WLAN_CIPHER_SUITE_AES_CMAC:
@@ -360,7 +360,7 @@ struct ieee80211_key *ieee80211_key_alloc(u32 cipher, int idx, size_t key_len,
 		if (IS_ERR(key->u.aes_cmac.tfm)) {
 			err = PTR_ERR(key->u.aes_cmac.tfm);
 			kfree(key);
-			key = ERR_PTR(err);
+			return ERR_PTR(err);
 		}
 		break;
 	}
@@ -400,11 +400,12 @@ int ieee80211_key_link(struct ieee80211_key *key,
 {
 	struct ieee80211_key *old_key;
 	int idx, ret;
-	bool pairwise = key->conf.flags & IEEE80211_KEY_FLAG_PAIRWISE;
+	bool pairwise;
 
 	BUG_ON(!sdata);
 	BUG_ON(!key);
 
+	pairwise = key->conf.flags & IEEE80211_KEY_FLAG_PAIRWISE;
 	idx = key->conf.keyidx;
 	key->local = sdata->local;
 	key->sdata = sdata;
diff --git a/net/mac80211/rc80211_minstrel_ht.c b/net/mac80211/rc80211_minstrel_ht.c
index 8212a8b..dbdebeda 100644
--- a/net/mac80211/rc80211_minstrel_ht.c
+++ b/net/mac80211/rc80211_minstrel_ht.c
@@ -659,18 +659,14 @@ minstrel_ht_update_caps(void *priv, struct ieee80211_supported_band *sband,
 	struct ieee80211_mcs_info *mcs = &sta->ht_cap.mcs;
 	struct ieee80211_local *local = hw_to_local(mp->hw);
 	u16 sta_cap = sta->ht_cap.cap;
+	int n_supported = 0;
 	int ack_dur;
 	int stbc;
 	int i;
 
 	/* fall back to the old minstrel for legacy stations */
-	if (!sta->ht_cap.ht_supported) {
-		msp->is_ht = false;
-		memset(&msp->legacy, 0, sizeof(msp->legacy));
-		msp->legacy.r = msp->ratelist;
-		msp->legacy.sample_table = msp->sample_table;
-		return mac80211_minstrel.rate_init(priv, sband, sta, &msp->legacy);
-	}
+	if (!sta->ht_cap.ht_supported)
+		goto use_legacy;
 
 	BUILD_BUG_ON(ARRAY_SIZE(minstrel_mcs_groups) !=
 		MINSTREL_MAX_STREAMS * MINSTREL_STREAM_GROUPS);
@@ -725,7 +721,22 @@ minstrel_ht_update_caps(void *priv, struct ieee80211_supported_band *sband,
 
 		mi->groups[i].supported =
 			mcs->rx_mask[minstrel_mcs_groups[i].streams - 1];
+
+		if (mi->groups[i].supported)
+			n_supported++;
 	}
+
+	if (!n_supported)
+		goto use_legacy;
+
+	return;
+
+use_legacy:
+	msp->is_ht = false;
+	memset(&msp->legacy, 0, sizeof(msp->legacy));
+	msp->legacy.r = msp->ratelist;
+	msp->legacy.sample_table = msp->sample_table;
+	return mac80211_minstrel.rate_init(priv, sband, sta, &msp->legacy);
 }
 
 static void
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 5c1930ba..aa5cc37 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -612,7 +612,8 @@ static void ieee80211_sta_reorder_release(struct ieee80211_hw *hw,
 				skipped++;
 				continue;
 			}
-			if (!time_after(jiffies, tid_agg_rx->reorder_time[j] +
+			if (skipped &&
+			    !time_after(jiffies, tid_agg_rx->reorder_time[j] +
 					HT_RX_REORDER_BUF_TIMEOUT))
 				goto set_release_timer;
 
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index de98665..b3434cc 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -3106,10 +3106,10 @@ struct sctp_chunk *sctp_process_asconf(struct sctp_association *asoc,
 
 	/* create an ASCONF_ACK chunk.
 	 * Based on the definitions of parameters, we know that the size of
-	 * ASCONF_ACK parameters are less than or equal to the twice of ASCONF
+	 * ASCONF_ACK parameters are less than or equal to the fourfold of ASCONF
 	 * parameters.
 	 */
-	asconf_ack = sctp_make_asconf_ack(asoc, serial, chunk_len * 2);
+	asconf_ack = sctp_make_asconf_ack(asoc, serial, chunk_len * 4);
 	if (!asconf_ack)
 		goto done;
 
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index ea427f4..fbf6f33 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -124,6 +124,15 @@ void cfg80211_bss_age(struct cfg80211_registered_device *dev,
 }
 
 /* must hold dev->bss_lock! */
+static void __cfg80211_unlink_bss(struct cfg80211_registered_device *dev,
+				  struct cfg80211_internal_bss *bss)
+{
+	list_del_init(&bss->list);
+	rb_erase(&bss->rbn, &dev->bss_tree);
+	kref_put(&bss->ref, bss_release);
+}
+
+/* must hold dev->bss_lock! */
 void cfg80211_bss_expire(struct cfg80211_registered_device *dev)
 {
 	struct cfg80211_internal_bss *bss, *tmp;
@@ -134,9 +143,7 @@ void cfg80211_bss_expire(struct cfg80211_registered_device *dev)
 			continue;
 		if (!time_after(jiffies, bss->ts + IEEE80211_SCAN_RESULT_EXPIRE))
 			continue;
-		list_del(&bss->list);
-		rb_erase(&bss->rbn, &dev->bss_tree);
-		kref_put(&bss->ref, bss_release);
+		__cfg80211_unlink_bss(dev, bss);
 		expired = true;
 	}
 
@@ -585,16 +592,23 @@ cfg80211_inform_bss_frame(struct wiphy *wiphy,
 	struct cfg80211_internal_bss *res;
 	size_t ielen = len - offsetof(struct ieee80211_mgmt,
 				      u.probe_resp.variable);
-	size_t privsz = wiphy->bss_priv_size;
+	size_t privsz;
+
+	if (WARN_ON(!mgmt))
+		return NULL;
+
+	if (WARN_ON(!wiphy))
+		return NULL;
 
 	if (WARN_ON(wiphy->signal_type == CFG80211_SIGNAL_TYPE_UNSPEC &&
 	            (signal < 0 || signal > 100)))
 		return NULL;
 
-	if (WARN_ON(!mgmt || !wiphy ||
-		    len < offsetof(struct ieee80211_mgmt, u.probe_resp.variable)))
+	if (WARN_ON(len < offsetof(struct ieee80211_mgmt, u.probe_resp.variable)))
 		return NULL;
 
+	privsz = wiphy->bss_priv_size;
+
 	res = kzalloc(sizeof(*res) + privsz + ielen, gfp);
 	if (!res)
 		return NULL;
@@ -662,11 +676,8 @@ void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *pub)
 
 	spin_lock_bh(&dev->bss_lock);
 	if (!list_empty(&bss->list)) {
-		list_del_init(&bss->list);
+		__cfg80211_unlink_bss(dev, bss);
 		dev->bss_generation++;
-		rb_erase(&bss->rbn, &dev->bss_tree);
-
-		kref_put(&bss->ref, bss_release);
 	}
 	spin_unlock_bh(&dev->bss_lock);
 }