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

Pull networking updates from David Miller:
 "Highlights:

   1) Steady transitioning of the BPF instructure to a generic spot so
      all kernel subsystems can make use of it, from Alexei Starovoitov.

   2) SFC driver supports busy polling, from Alexandre Rames.

   3) Take advantage of hash table in UDP multicast delivery, from David
      Held.

   4) Lighten locking, in particular by getting rid of the LRU lists, in
      inet frag handling.  From Florian Westphal.

   5) Add support for various RFC6458 control messages in SCTP, from
      Geir Ola Vaagland.

   6) Allow to filter bridge forwarding database dumps by device, from
      Jamal Hadi Salim.

   7) virtio-net also now supports busy polling, from Jason Wang.

   8) Some low level optimization tweaks in pktgen from Jesper Dangaard
      Brouer.

   9) Add support for ipv6 address generation modes, so that userland
      can have some input into the process.  From Jiri Pirko.

  10) Consolidate common TCP connection request code in ipv4 and ipv6,
      from Octavian Purdila.

  11) New ARP packet logger in netfilter, from Pablo Neira Ayuso.

  12) Generic resizable RCU hash table, with intial users in netlink and
      nftables.  From Thomas Graf.

  13) Maintain a name assignment type so that userspace can see where a
      network device name came from (enumerated by kernel, assigned
      explicitly by userspace, etc.) From Tom Gundersen.

  14) Automatic flow label generation on transmit in ipv6, from Tom
      Herbert.

  15) New packet timestamping facilities from Willem de Bruijn, meant to
      assist in measuring latencies going into/out-of the packet
      scheduler, latency from TCP data transmission to ACK, etc"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1536 commits)
  cxgb4 : Disable recursive mailbox commands when enabling vi
  net: reduce USB network driver config options.
  tg3: Modify tg3_tso_bug() to handle multiple TX rings
  amd-xgbe: Perform phy connect/disconnect at dev open/stop
  amd-xgbe: Use dma_set_mask_and_coherent to set DMA mask
  net: sun4i-emac: fix memory leak on bad packet
  sctp: fix possible seqlock seadlock in sctp_packet_transmit()
  Revert "net: phy: Set the driver when registering an MDIO bus device"
  cxgb4vf: Turn off SGE RX/TX Callback Timers and interrupts in PCI shutdown routine
  team: Simplify return path of team_newlink
  bridge: Update outdated comment on promiscuous mode
  net-timestamp: ACK timestamp for bytestreams
  net-timestamp: TCP timestamping
  net-timestamp: SCHED timestamp on entering packet scheduler
  net-timestamp: add key to disambiguate concurrent datagrams
  net-timestamp: move timestamp flags out of sk_flags
  net-timestamp: extend SCM_TIMESTAMPING ancillary data struct
  cxgb4i : Move stray CPL definitions to cxgb4 driver
  tcp: reduce spurious retransmits due to transient SACK reneging
  qlcnic: Initialize dcbnl_ops before register_netdev
  ...

1 files changed, 82 insertions, 134 deletions

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_x540.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_x540.c
index 40dd798e1290..e88305d5d18d 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_x540.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_x540.c
@@ -1,7 +1,7 @@
 /*******************************************************************************
 
   Intel 10 Gigabit PCI Express Linux driver
-  Copyright(c) 1999 - 2013 Intel Corporation.
+  Copyright(c) 1999 - 2014 Intel Corporation.
 
   This program is free software; you can redistribute it and/or modify it
   under the terms and conditions of the GNU General Public License,
@@ -99,8 +99,8 @@ static s32 ixgbe_reset_hw_X540(struct ixgbe_hw *hw)
 
 	/* Call adapter stop to disable tx/rx and clear interrupts */
 	status = hw->mac.ops.stop_adapter(hw);
-	if (status != 0)
-		goto reset_hw_out;
+	if (status)
+		return status;
 
 	/* flush pending Tx transactions */
 	ixgbe_clear_tx_pending(hw);
@@ -168,7 +168,6 @@ mac_reset_top:
 	hw->mac.ops.get_wwn_prefix(hw, &hw->mac.wwnn_prefix,
 				   &hw->mac.wwpn_prefix);
 
-reset_hw_out:
 	return status;
 }
 
@@ -182,40 +181,13 @@ reset_hw_out:
  **/
 static s32 ixgbe_start_hw_X540(struct ixgbe_hw *hw)
 {
-	s32 ret_val = 0;
+	s32 ret_val;
 
 	ret_val = ixgbe_start_hw_generic(hw);
-	if (ret_val != 0)
-		goto out;
+	if (ret_val)
+		return ret_val;
 
-	ret_val = ixgbe_start_hw_gen2(hw);
-out:
-	return ret_val;
-}
-
-/**
- *  ixgbe_get_supported_physical_layer_X540 - Returns physical layer type
- *  @hw: pointer to hardware structure
- *
- *  Determines physical layer capabilities of the current configuration.
- **/
-static u32 ixgbe_get_supported_physical_layer_X540(struct ixgbe_hw *hw)
-{
-	u32 physical_layer = IXGBE_PHYSICAL_LAYER_UNKNOWN;
-	u16 ext_ability = 0;
-
-	hw->phy.ops.identify(hw);
-
-	hw->phy.ops.read_reg(hw, MDIO_PMA_EXTABLE, MDIO_MMD_PMAPMD,
-			     &ext_ability);
-	if (ext_ability & MDIO_PMA_EXTABLE_10GBT)
-		physical_layer |= IXGBE_PHYSICAL_LAYER_10GBASE_T;
-	if (ext_ability & MDIO_PMA_EXTABLE_1000BT)
-		physical_layer |= IXGBE_PHYSICAL_LAYER_1000BASE_T;
-	if (ext_ability & MDIO_PMA_EXTABLE_100BTX)
-		physical_layer |= IXGBE_PHYSICAL_LAYER_100BASE_TX;
-
-	return physical_layer;
+	return ixgbe_start_hw_gen2(hw);
 }
 
 /**
@@ -258,13 +230,12 @@ static s32 ixgbe_init_eeprom_params_X540(struct ixgbe_hw *hw)
  **/
 static s32 ixgbe_read_eerd_X540(struct ixgbe_hw *hw, u16 offset, u16 *data)
 {
-	s32 status = 0;
+	s32 status;
 
-	if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) ==
-	    0)
-		status = ixgbe_read_eerd_generic(hw, offset, data);
-	else
-		status = IXGBE_ERR_SWFW_SYNC;
+	if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM))
+		return IXGBE_ERR_SWFW_SYNC;
+
+	status = ixgbe_read_eerd_generic(hw, offset, data);
 
 	hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
 	return status;
@@ -282,14 +253,12 @@ static s32 ixgbe_read_eerd_X540(struct ixgbe_hw *hw, u16 offset, u16 *data)
 static s32 ixgbe_read_eerd_buffer_X540(struct ixgbe_hw *hw,
 				       u16 offset, u16 words, u16 *data)
 {
-	s32 status = 0;
+	s32 status;
 
-	if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) ==
-	    0)
-		status = ixgbe_read_eerd_buffer_generic(hw, offset,
-							words, data);
-	else
-		status = IXGBE_ERR_SWFW_SYNC;
+	if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM))
+		return IXGBE_ERR_SWFW_SYNC;
+
+	status = ixgbe_read_eerd_buffer_generic(hw, offset, words, data);
 
 	hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
 	return status;
@@ -305,12 +274,12 @@ static s32 ixgbe_read_eerd_buffer_X540(struct ixgbe_hw *hw,
  **/
 static s32 ixgbe_write_eewr_X540(struct ixgbe_hw *hw, u16 offset, u16 data)
 {
-	s32 status = 0;
+	s32 status;
 
-	if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) == 0)
-		status = ixgbe_write_eewr_generic(hw, offset, data);
-	else
-		status = IXGBE_ERR_SWFW_SYNC;
+	if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM))
+		return IXGBE_ERR_SWFW_SYNC;
+
+	status = ixgbe_write_eewr_generic(hw, offset, data);
 
 	hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
 	return status;
@@ -328,14 +297,12 @@ static s32 ixgbe_write_eewr_X540(struct ixgbe_hw *hw, u16 offset, u16 data)
 static s32 ixgbe_write_eewr_buffer_X540(struct ixgbe_hw *hw,
 					u16 offset, u16 words, u16 *data)
 {
-	s32 status = 0;
+	s32 status;
 
-	if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) ==
-	    0)
-		status = ixgbe_write_eewr_buffer_generic(hw, offset,
-							 words, data);
-	else
-		status = IXGBE_ERR_SWFW_SYNC;
+	if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM))
+		return IXGBE_ERR_SWFW_SYNC;
+
+	status = ixgbe_write_eewr_buffer_generic(hw, offset, words, data);
 
 	hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
 	return status;
@@ -430,44 +397,37 @@ static s32 ixgbe_validate_eeprom_checksum_X540(struct ixgbe_hw *hw,
 	u16 checksum;
 	u16 read_checksum = 0;
 
-	/*
-	 * Read the first word from the EEPROM. If this times out or fails, do
+	/* Read the first word from the EEPROM. If this times out or fails, do
 	 * not continue or we could be in for a very long wait while every
 	 * EEPROM read fails
 	 */
 	status = hw->eeprom.ops.read(hw, 0, &checksum);
-
-	if (status != 0) {
+	if (status) {
 		hw_dbg(hw, "EEPROM read failed\n");
-		goto out;
+		return status;
 	}
 
-	if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) == 0) {
-		checksum = hw->eeprom.ops.calc_checksum(hw);
+	if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM))
+		return IXGBE_ERR_SWFW_SYNC;
 
-		/*
-		 * Do not use hw->eeprom.ops.read because we do not want to take
-		 * the synchronization semaphores twice here.
-		 */
-		ixgbe_read_eerd_generic(hw, IXGBE_EEPROM_CHECKSUM,
-					&read_checksum);
+	checksum = hw->eeprom.ops.calc_checksum(hw);
 
-		/*
-		 * Verify read checksum from EEPROM is the same as
-		 * calculated checksum
-		 */
-		if (read_checksum != checksum)
-			status = IXGBE_ERR_EEPROM_CHECKSUM;
-
-		/* If the user cares, return the calculated checksum */
-		if (checksum_val)
-			*checksum_val = checksum;
-	} else {
-		status = IXGBE_ERR_SWFW_SYNC;
-	}
+	/* Do not use hw->eeprom.ops.read because we do not want to take
+	 * the synchronization semaphores twice here.
+	 */
+	status = ixgbe_read_eerd_generic(hw, IXGBE_EEPROM_CHECKSUM,
+					 &read_checksum);
 
 	hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
-out:
+
+	/* If the user cares, return the calculated checksum */
+	if (checksum_val)
+		*checksum_val = checksum;
+
+	/* Verify read and calculated checksums are the same */
+	if (read_checksum != checksum)
+		return IXGBE_ERR_EEPROM_CHECKSUM;
+
 	return status;
 }
 
@@ -484,34 +444,29 @@ static s32 ixgbe_update_eeprom_checksum_X540(struct ixgbe_hw *hw)
 	s32 status;
 	u16 checksum;
 
-	/*
-	 * Read the first word from the EEPROM. If this times out or fails, do
+	/* Read the first word from the EEPROM. If this times out or fails, do
 	 * not continue or we could be in for a very long wait while every
 	 * EEPROM read fails
 	 */
 	status = hw->eeprom.ops.read(hw, 0, &checksum);
-
-	if (status != 0)
+	if (status) {
 		hw_dbg(hw, "EEPROM read failed\n");
+		return status;
+	}
 
-	if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) == 0) {
-		checksum = hw->eeprom.ops.calc_checksum(hw);
+	if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM))
+		return  IXGBE_ERR_SWFW_SYNC;
 
-		/*
-		 * Do not use hw->eeprom.ops.write because we do not want to
-		 * take the synchronization semaphores twice here.
-		 */
-		status = ixgbe_write_eewr_generic(hw, IXGBE_EEPROM_CHECKSUM,
-						  checksum);
+	checksum = hw->eeprom.ops.calc_checksum(hw);
 
-	if (status == 0)
+	/* Do not use hw->eeprom.ops.write because we do not want to
+	 * take the synchronization semaphores twice here.
+	 */
+	status = ixgbe_write_eewr_generic(hw, IXGBE_EEPROM_CHECKSUM, checksum);
+	if (!status)
 		status = ixgbe_update_flash_X540(hw);
-	else
-		status = IXGBE_ERR_SWFW_SYNC;
-	}
 
 	hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
-
 	return status;
 }
 
@@ -525,12 +480,12 @@ static s32 ixgbe_update_eeprom_checksum_X540(struct ixgbe_hw *hw)
 static s32 ixgbe_update_flash_X540(struct ixgbe_hw *hw)
 {
 	u32 flup;
-	s32 status = IXGBE_ERR_EEPROM;
+	s32 status;
 
 	status = ixgbe_poll_flash_update_done_X540(hw);
 	if (status == IXGBE_ERR_EEPROM) {
 		hw_dbg(hw, "Flash update time out\n");
-		goto out;
+		return status;
 	}
 
 	flup = IXGBE_READ_REG(hw, IXGBE_EEC) | IXGBE_EEC_FLUP;
@@ -556,7 +511,7 @@ static s32 ixgbe_update_flash_X540(struct ixgbe_hw *hw)
 		else
 			hw_dbg(hw, "Flash update time out\n");
 	}
-out:
+
 	return status;
 }
 
@@ -571,17 +526,14 @@ static s32 ixgbe_poll_flash_update_done_X540(struct ixgbe_hw *hw)
 {
 	u32 i;
 	u32 reg;
-	s32 status = IXGBE_ERR_EEPROM;
 
 	for (i = 0; i < IXGBE_FLUDONE_ATTEMPTS; i++) {
 		reg = IXGBE_READ_REG(hw, IXGBE_EEC);
-		if (reg & IXGBE_EEC_FLUDONE) {
-			status = 0;
-			break;
-		}
+		if (reg & IXGBE_EEC_FLUDONE)
+			return 0;
 		udelay(5);
 	}
-	return status;
+	return IXGBE_ERR_EEPROM;
 }
 
 /**
@@ -676,46 +628,44 @@ static void ixgbe_release_swfw_sync_X540(struct ixgbe_hw *hw, u16 mask)
 }
 
 /**
- * ixgbe_get_nvm_semaphore - Get hardware semaphore
+ * ixgbe_get_swfw_sync_semaphore - Get hardware semaphore
  * @hw: pointer to hardware structure
  *
  * Sets the hardware semaphores so SW/FW can gain control of shared resources
- **/
+ */
 static s32 ixgbe_get_swfw_sync_semaphore(struct ixgbe_hw *hw)
 {
-	s32 status = IXGBE_ERR_EEPROM;
 	u32 timeout = 2000;
 	u32 i;
 	u32 swsm;
 
 	/* Get SMBI software semaphore between device drivers first */
 	for (i = 0; i < timeout; i++) {
-		/*
-		 * If the SMBI bit is 0 when we read it, then the bit will be
+		/* If the SMBI bit is 0 when we read it, then the bit will be
 		 * set and we have the semaphore
 		 */
 		swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
-		if (!(swsm & IXGBE_SWSM_SMBI)) {
-			status = 0;
+		if (!(swsm & IXGBE_SWSM_SMBI))
 			break;
-		}
-		udelay(50);
+		usleep_range(50, 100);
+	}
+
+	if (i == timeout) {
+		hw_dbg(hw,
+		       "Software semaphore SMBI between device drivers not granted.\n");
+		return IXGBE_ERR_EEPROM;
 	}
 
 	/* Now get the semaphore between SW/FW through the REGSMP bit */
-	if (status) {
-		for (i = 0; i < timeout; i++) {
-			swsm = IXGBE_READ_REG(hw, IXGBE_SWFW_SYNC);
-			if (!(swsm & IXGBE_SWFW_REGSMP))
-				break;
+	for (i = 0; i < timeout; i++) {
+		swsm = IXGBE_READ_REG(hw, IXGBE_SWFW_SYNC);
+		if (!(swsm & IXGBE_SWFW_REGSMP))
+			return 0;
 
-			udelay(50);
-		}
-	} else {
-		hw_dbg(hw, "Software semaphore SMBI between device drivers not granted.\n");
+		usleep_range(50, 100);
 	}
 
-	return status;
+	return IXGBE_ERR_EEPROM;
 }
 
 /**
@@ -811,8 +761,6 @@ static struct ixgbe_mac_operations mac_ops_X540 = {
 	.start_hw               = &ixgbe_start_hw_X540,
 	.clear_hw_cntrs         = &ixgbe_clear_hw_cntrs_generic,
 	.get_media_type         = &ixgbe_get_media_type_X540,
-	.get_supported_physical_layer =
-				  &ixgbe_get_supported_physical_layer_X540,
 	.enable_rx_dma          = &ixgbe_enable_rx_dma_generic,
 	.get_mac_addr           = &ixgbe_get_mac_addr_generic,
 	.get_san_mac_addr       = &ixgbe_get_san_mac_addr_generic,