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

Pull networking merge from David Miller:
 "1) Move ixgbe driver over to purely page based buffering on receive.
     From Alexander Duyck.

  2) Add receive packet steering support to e1000e, from Bruce Allan.

  3) Convert TCP MD5 support over to RCU, from Eric Dumazet.

  4) Reduce cpu usage in handling out-of-order TCP packets on modern
     systems, also from Eric Dumazet.

  5) Support the IP{,V6}_UNICAST_IF socket options, making the wine
     folks happy, from Erich Hoover.

  6) Support VLAN trunking from guests in hyperv driver, from Haiyang
     Zhang.

  7) Support byte-queue-limtis in r8169, from Igor Maravic.

  8) Outline code intended for IP_RECVTOS in IP_PKTOPTIONS existed but
     was never properly implemented, Jiri Benc fixed that.

  9) 64-bit statistics support in r8169 and 8139too, from Junchang Wang.

  10) Support kernel side dump filtering by ctmark in netfilter
      ctnetlink, from Pablo Neira Ayuso.

  11) Support byte-queue-limits in gianfar driver, from Paul Gortmaker.

  12) Add new peek socket options to assist with socket migration, from
      Pavel Emelyanov.

  13) Add sch_plug packet scheduler whose queue is controlled by
      userland daemons using explicit freeze and release commands.  From
      Shriram Rajagopalan.

  14) Fix FCOE checksum offload handling on transmit, from Yi Zou."

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1846 commits)
  Fix pppol2tp getsockname()
  Remove printk from rds_sendmsg
  ipv6: fix incorrent ipv6 ipsec packet fragment
  cpsw: Hook up default ndo_change_mtu.
  net: qmi_wwan: fix build error due to cdc-wdm dependecy
  netdev: driver: ethernet: Add TI CPSW driver
  netdev: driver: ethernet: add cpsw address lookup engine support
  phy: add am79c874 PHY support
  mlx4_core: fix race on comm channel
  bonding: send igmp report for its master
  fs_enet: Add MPC5125 FEC support and PHY interface selection
  net: bpf_jit: fix BPF_S_LDX_B_MSH compilation
  net: update the usage of CHECKSUM_UNNECESSARY
  fcoe: use CHECKSUM_UNNECESSARY instead of CHECKSUM_PARTIAL on tx
  net: do not do gso for CHECKSUM_UNNECESSARY in netif_needs_gso
  ixgbe: Fix issues with SR-IOV loopback when flow control is disabled
  net/hyperv: Fix the code handling tx busy
  ixgbe: fix namespace issues when FCoE/DCB is not enabled
  rtlwifi: Remove unused ETH_ADDR_LEN defines
  igbvf: Use ETH_ALEN
  ...

Fix up fairly trivial conflicts in drivers/isdn/gigaset/interface.c and
drivers/net/usb/{Kconfig,qmi_wwan.c} as per David.

1 files changed, 152 insertions, 80 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2800usb.c b/drivers/net/wireless/rt2x00/rt2800usb.c
index 262ee9eefb6f..cd490abced91 100644
--- a/drivers/net/wireless/rt2x00/rt2800usb.c
+++ b/drivers/net/wireless/rt2x00/rt2800usb.c
@@ -114,45 +114,103 @@ static bool rt2800usb_txstatus_pending(struct rt2x00_dev *rt2x00dev)
 	return false;
 }
 
+static inline bool rt2800usb_entry_txstatus_timeout(struct queue_entry *entry)
+{
+	bool tout;
+
+	if (!test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags))
+		return false;
+
+	tout = time_after(jiffies, entry->last_action + msecs_to_jiffies(100));
+	if (unlikely(tout))
+		WARNING(entry->queue->rt2x00dev,
+			"TX status timeout for entry %d in queue %d\n",
+			entry->entry_idx, entry->queue->qid);
+	return tout;
+
+}
+
+static bool rt2800usb_txstatus_timeout(struct rt2x00_dev *rt2x00dev)
+{
+	struct data_queue *queue;
+	struct queue_entry *entry;
+
+	tx_queue_for_each(rt2x00dev, queue) {
+		entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
+		if (rt2800usb_entry_txstatus_timeout(entry))
+			return true;
+	}
+	return false;
+}
+
 static bool rt2800usb_tx_sta_fifo_read_completed(struct rt2x00_dev *rt2x00dev,
 						 int urb_status, u32 tx_status)
 {
+	bool valid;
+
 	if (urb_status) {
-		WARNING(rt2x00dev, "rt2x00usb_register_read_async failed: %d\n", urb_status);
-		return false;
+		WARNING(rt2x00dev, "TX status read failed %d\n", urb_status);
+
+		goto stop_reading;
 	}
 
-	/* try to read all TX_STA_FIFO entries before scheduling txdone_work */
-	if (rt2x00_get_field32(tx_status, TX_STA_FIFO_VALID)) {
-		if (!kfifo_put(&rt2x00dev->txstatus_fifo, &tx_status)) {
-			WARNING(rt2x00dev, "TX status FIFO overrun, "
-				"drop tx status report.\n");
-			queue_work(rt2x00dev->workqueue, &rt2x00dev->txdone_work);
-		} else
-			return true;
-	} else if (!kfifo_is_empty(&rt2x00dev->txstatus_fifo)) {
+	valid = rt2x00_get_field32(tx_status, TX_STA_FIFO_VALID);
+	if (valid) {
+		if (!kfifo_put(&rt2x00dev->txstatus_fifo, &tx_status))
+			WARNING(rt2x00dev, "TX status FIFO overrun\n");
+
 		queue_work(rt2x00dev->workqueue, &rt2x00dev->txdone_work);
+
+		/* Reschedule urb to read TX status again instantly */
+		return true;
 	} else if (rt2800usb_txstatus_pending(rt2x00dev)) {
-		mod_timer(&rt2x00dev->txstatus_timer, jiffies + msecs_to_jiffies(2));
+		/* Read register after 250 us */
+		hrtimer_start(&rt2x00dev->txstatus_timer, ktime_set(0, 250000),
+			      HRTIMER_MODE_REL);
+		return false;
 	}
 
-	return false;
+stop_reading:
+	clear_bit(TX_STATUS_READING, &rt2x00dev->flags);
+	/*
+	 * There is small race window above, between txstatus pending check and
+	 * clear_bit someone could do rt2x00usb_interrupt_txdone, so recheck
+	 * here again if status reading is needed.
+	 */
+	if (rt2800usb_txstatus_pending(rt2x00dev) &&
+	    test_and_set_bit(TX_STATUS_READING, &rt2x00dev->flags))
+		return true;
+	else
+		return false;
+}
+
+static void rt2800usb_async_read_tx_status(struct rt2x00_dev *rt2x00dev)
+{
+
+	if (test_and_set_bit(TX_STATUS_READING, &rt2x00dev->flags))
+		return;
+
+	/* Read TX_STA_FIFO register after 500 us */
+	hrtimer_start(&rt2x00dev->txstatus_timer, ktime_set(0, 500000),
+		      HRTIMER_MODE_REL);
 }
 
 static void rt2800usb_tx_dma_done(struct queue_entry *entry)
 {
 	struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
 
-	rt2x00usb_register_read_async(rt2x00dev, TX_STA_FIFO,
-				      rt2800usb_tx_sta_fifo_read_completed);
+	rt2800usb_async_read_tx_status(rt2x00dev);
 }
 
-static void rt2800usb_tx_sta_fifo_timeout(unsigned long data)
+static enum hrtimer_restart rt2800usb_tx_sta_fifo_timeout(struct hrtimer *timer)
 {
-	struct rt2x00_dev *rt2x00dev = (struct rt2x00_dev *)data;
+	struct rt2x00_dev *rt2x00dev =
+	    container_of(timer, struct rt2x00_dev, txstatus_timer);
 
 	rt2x00usb_register_read_async(rt2x00dev, TX_STA_FIFO,
 				      rt2800usb_tx_sta_fifo_read_completed);
+
+	return HRTIMER_NORESTART;
 }
 
 /*
@@ -226,9 +284,7 @@ static int rt2800usb_init_registers(struct rt2x00_dev *rt2x00dev)
 	rt2x00usb_register_read(rt2x00dev, PBF_SYS_CTRL, &reg);
 	rt2x00usb_register_write(rt2x00dev, PBF_SYS_CTRL, reg & ~0x00002000);
 
-	rt2x00usb_register_write(rt2x00dev, PWR_PIN_CFG, 0x00000003);
-
-	rt2x00usb_register_read(rt2x00dev, MAC_SYS_CTRL, &reg);
+	reg = 0;
 	rt2x00_set_field32(&reg, MAC_SYS_CTRL_RESET_CSR, 1);
 	rt2x00_set_field32(&reg, MAC_SYS_CTRL_RESET_BBP, 1);
 	rt2x00usb_register_write(rt2x00dev, MAC_SYS_CTRL, reg);
@@ -440,35 +496,26 @@ static int rt2800usb_get_tx_data_len(struct queue_entry *entry)
 /*
  * TX control handlers
  */
-static bool rt2800usb_txdone_entry_check(struct queue_entry *entry, u32 reg)
+static enum txdone_entry_desc_flags
+rt2800usb_txdone_entry_check(struct queue_entry *entry, u32 reg)
 {
 	__le32 *txwi;
 	u32 word;
 	int wcid, ack, pid;
-	int tx_wcid, tx_ack, tx_pid;
-
-	if (test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags) ||
-	    !test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags)) {
-		WARNING(entry->queue->rt2x00dev,
-			"Data pending for entry %u in queue %u\n",
-			entry->entry_idx, entry->queue->qid);
-		cond_resched();
-		return false;
-	}
-
-	wcid	= rt2x00_get_field32(reg, TX_STA_FIFO_WCID);
-	ack	= rt2x00_get_field32(reg, TX_STA_FIFO_TX_ACK_REQUIRED);
-	pid	= rt2x00_get_field32(reg, TX_STA_FIFO_PID_TYPE);
+	int tx_wcid, tx_ack, tx_pid, is_agg;
 
 	/*
 	 * This frames has returned with an IO error,
 	 * so the status report is not intended for this
 	 * frame.
 	 */
-	if (test_bit(ENTRY_DATA_IO_FAILED, &entry->flags)) {
-		rt2x00lib_txdone_noinfo(entry, TXDONE_FAILURE);
-		return false;
-	}
+	if (test_bit(ENTRY_DATA_IO_FAILED, &entry->flags))
+		return TXDONE_FAILURE;
+
+	wcid	= rt2x00_get_field32(reg, TX_STA_FIFO_WCID);
+	ack	= rt2x00_get_field32(reg, TX_STA_FIFO_TX_ACK_REQUIRED);
+	pid	= rt2x00_get_field32(reg, TX_STA_FIFO_PID_TYPE);
+	is_agg	= rt2x00_get_field32(reg, TX_STA_FIFO_TX_AGGRE);
 
 	/*
 	 * Validate if this TX status report is intended for
@@ -481,15 +528,14 @@ static bool rt2800usb_txdone_entry_check(struct queue_entry *entry, u32 reg)
 	tx_ack  = rt2x00_get_field32(word, TXWI_W1_ACK);
 	tx_pid  = rt2x00_get_field32(word, TXWI_W1_PACKETID);
 
-	if ((wcid != tx_wcid) || (ack != tx_ack) || (pid != tx_pid)) {
+	if (wcid != tx_wcid || ack != tx_ack || (!is_agg && pid != tx_pid)) {
 		WARNING(entry->queue->rt2x00dev,
 			"TX status report missed for queue %d entry %d\n",
-		entry->queue->qid, entry->entry_idx);
-		rt2x00lib_txdone_noinfo(entry, TXDONE_UNKNOWN);
-		return false;
+			entry->queue->qid, entry->entry_idx);
+		return TXDONE_UNKNOWN;
 	}
 
-	return true;
+	return TXDONE_SUCCESS;
 }
 
 static void rt2800usb_txdone(struct rt2x00_dev *rt2x00dev)
@@ -498,47 +544,44 @@ static void rt2800usb_txdone(struct rt2x00_dev *rt2x00dev)
 	struct queue_entry *entry;
 	u32 reg;
 	u8 qid;
+	enum txdone_entry_desc_flags done_status;
 
 	while (kfifo_get(&rt2x00dev->txstatus_fifo, &reg)) {
-
-		/* TX_STA_FIFO_PID_QUEUE is a 2-bit field, thus
-		 * qid is guaranteed to be one of the TX QIDs
+		/*
+		 * TX_STA_FIFO_PID_QUEUE is a 2-bit field, thus qid is
+		 * guaranteed to be one of the TX QIDs .
 		 */
 		qid = rt2x00_get_field32(reg, TX_STA_FIFO_PID_QUEUE);
 		queue = rt2x00queue_get_tx_queue(rt2x00dev, qid);
-		if (unlikely(!queue)) {
-			WARNING(rt2x00dev, "Got TX status for an unavailable "
+
+		if (unlikely(rt2x00queue_empty(queue))) {
+			WARNING(rt2x00dev, "Got TX status for an empty "
 					   "queue %u, dropping\n", qid);
-			continue;
+			break;
 		}
 
-		/*
-		 * Inside each queue, we process each entry in a chronological
-		 * order. We first check that the queue is not empty.
-		 */
-		entry = NULL;
-		while (!rt2x00queue_empty(queue)) {
-			entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
-			if (rt2800usb_txdone_entry_check(entry, reg))
-				break;
-			entry = NULL;
+		entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
+
+		if (unlikely(test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags) ||
+			     !test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags))) {
+			WARNING(rt2x00dev, "Data pending for entry %u "
+					   "in queue %u\n", entry->entry_idx, qid);
+			break;
 		}
 
-		if (entry)
-			rt2800_txdone_entry(entry, reg,
-					    rt2800usb_get_txwi(entry));
+		done_status = rt2800usb_txdone_entry_check(entry, reg);
+		if (likely(done_status == TXDONE_SUCCESS))
+			rt2800_txdone_entry(entry, reg, rt2800usb_get_txwi(entry));
+		else
+			rt2x00lib_txdone_noinfo(entry, done_status);
 	}
 }
 
-static void rt2800usb_work_txdone(struct work_struct *work)
+static void rt2800usb_txdone_nostatus(struct rt2x00_dev *rt2x00dev)
 {
-	struct rt2x00_dev *rt2x00dev =
-	    container_of(work, struct rt2x00_dev, txdone_work);
 	struct data_queue *queue;
 	struct queue_entry *entry;
 
-	rt2800usb_txdone(rt2x00dev);
-
 	/*
 	 * Process any trailing TX status reports for IO failures,
 	 * we loop until we find the first non-IO error entry. This
@@ -556,20 +599,34 @@ static void rt2800usb_work_txdone(struct work_struct *work)
 
 			if (test_bit(ENTRY_DATA_IO_FAILED, &entry->flags))
 				rt2x00lib_txdone_noinfo(entry, TXDONE_FAILURE);
-			else if (rt2x00queue_status_timeout(entry))
+			else if (rt2800usb_entry_txstatus_timeout(entry))
 				rt2x00lib_txdone_noinfo(entry, TXDONE_UNKNOWN);
 			else
 				break;
 		}
 	}
+}
 
-	/*
-	 * The hw may delay sending the packet after DMA complete
-	 * if the medium is busy, thus the TX_STA_FIFO entry is
-	 * also delayed -> use a timer to retrieve it.
-	 */
-	if (rt2800usb_txstatus_pending(rt2x00dev))
-		mod_timer(&rt2x00dev->txstatus_timer, jiffies + msecs_to_jiffies(2));
+static void rt2800usb_work_txdone(struct work_struct *work)
+{
+	struct rt2x00_dev *rt2x00dev =
+	    container_of(work, struct rt2x00_dev, txdone_work);
+
+	while (!kfifo_is_empty(&rt2x00dev->txstatus_fifo) ||
+	       rt2800usb_txstatus_timeout(rt2x00dev)) {
+
+		rt2800usb_txdone(rt2x00dev);
+
+		rt2800usb_txdone_nostatus(rt2x00dev);
+
+		/*
+		 * The hw may delay sending the packet after DMA complete
+		 * if the medium is busy, thus the TX_STA_FIFO entry is
+		 * also delayed -> use a timer to retrieve it.
+		 */
+		if (rt2800usb_txstatus_pending(rt2x00dev))
+			rt2800usb_async_read_tx_status(rt2x00dev);
+	}
 }
 
 /*
@@ -711,9 +768,7 @@ static int rt2800usb_probe_hw(struct rt2x00_dev *rt2x00dev)
 	__set_bit(REQUIRE_TXSTATUS_FIFO, &rt2x00dev->cap_flags);
 	__set_bit(REQUIRE_PS_AUTOWAKE, &rt2x00dev->cap_flags);
 
-	setup_timer(&rt2x00dev->txstatus_timer,
-		    rt2800usb_tx_sta_fifo_timeout,
-		    (unsigned long) rt2x00dev);
+	rt2x00dev->txstatus_timer.function = rt2800usb_tx_sta_fifo_timeout,
 
 	/*
 	 * Set the rssi offset.
@@ -783,6 +838,7 @@ static const struct rt2x00lib_ops rt2800usb_rt2x00_ops = {
 	.reset_tuner		= rt2800_reset_tuner,
 	.link_tuner		= rt2800_link_tuner,
 	.gain_calibration	= rt2800_gain_calibration,
+	.vco_calibration	= rt2800_vco_calibration,
 	.watchdog		= rt2800usb_watchdog,
 	.start_queue		= rt2800usb_start_queue,
 	.kick_queue		= rt2x00usb_kick_queue,
@@ -814,7 +870,7 @@ static const struct data_queue_desc rt2800usb_queue_rx = {
 };
 
 static const struct data_queue_desc rt2800usb_queue_tx = {
-	.entry_num		= 64,
+	.entry_num		= 16,
 	.data_size		= AGGREGATION_SIZE,
 	.desc_size		= TXINFO_DESC_SIZE + TXWI_DESC_SIZE,
 	.priv_size		= sizeof(struct queue_entry_priv_usb),
@@ -829,6 +885,7 @@ static const struct data_queue_desc rt2800usb_queue_bcn = {
 
 static const struct rt2x00_ops rt2800usb_ops = {
 	.name			= KBUILD_MODNAME,
+	.drv_data_size		= sizeof(struct rt2800_drv_data),
 	.max_sta_intf		= 1,
 	.max_ap_intf		= 8,
 	.eeprom_size		= EEPROM_SIZE,
@@ -922,6 +979,7 @@ static struct usb_device_id rt2800usb_device_table[] = {
 	{ USB_DEVICE(0x07d1, 0x3c13) },
 	{ USB_DEVICE(0x07d1, 0x3c15) },
 	{ USB_DEVICE(0x07d1, 0x3c16) },
+	{ USB_DEVICE(0x2001, 0x3c1b) },
 	/* Draytek */
 	{ USB_DEVICE(0x07fa, 0x7712) },
 	/* DVICO */
@@ -1101,12 +1159,26 @@ static struct usb_device_id rt2800usb_device_table[] = {
 	{ USB_DEVICE(0x5a57, 0x0284) },
 #endif
 #ifdef CONFIG_RT2800USB_RT53XX
+	/* Alpha */
+	{ USB_DEVICE(0x2001, 0x3c15) },
+	{ USB_DEVICE(0x2001, 0x3c19) },
+	/* Arcadyan */
+	{ USB_DEVICE(0x043e, 0x7a12) },
 	/* Azurewave */
 	{ USB_DEVICE(0x13d3, 0x3329) },
 	{ USB_DEVICE(0x13d3, 0x3365) },
+	/* LG innotek */
+	{ USB_DEVICE(0x043e, 0x7a22) },
+	/* Panasonic */
+	{ USB_DEVICE(0x04da, 0x1801) },
+	{ USB_DEVICE(0x04da, 0x1800) },
+	/* Philips */
+	{ USB_DEVICE(0x0471, 0x2104) },
 	/* Ralink */
 	{ USB_DEVICE(0x148f, 0x5370) },
 	{ USB_DEVICE(0x148f, 0x5372) },
+	/* Unknown */
+	{ USB_DEVICE(0x04da, 0x23f6) },
 #endif
 #ifdef CONFIG_RT2800USB_UNKNOWN
 	/*