[net-next 00/10][pull request] Intel Wired LAN Driver Updates

[net-next 00/10][pull request] Intel Wired LAN Driver Updates

[Jeff Kirsher]

This series contains updates to ixgbe.

Jacob provides a fix for 82599 devices where it can potentially keep link
lights up when the adapter has gone down.

Mark provides a fix to resolve the possible use of uninitialized memory
by checking the return value on EEPROM reads.

Don provides 2 patches, one to fix a issue where we were traversing the
Tx ring with the value of IXGBE_NUM_RX_QUEUES which currently happens
to have the correct value but this is misleading.  A change later, could
easily make this no longer correct so when traversing the Tx ring, use
netdev->num_tx_queues.  His second patch does some minor clean ups of log
messages.

Emil provides the remaining ixgbe patches.  First he fixes the link test
where forcing the laser before the link check can lead to inconsistent
results because it does not guarantee that the link will be negotiated
correctly.  Then he initializes the message buffer array to 0 in order
to avoid using random numbers from the memory as a MAC address for the
VF.  Emil also fixes the read loop for the I2C data to account for the
offset for SFP+ modules.  Lastly, Emil provides several patches to add
support for QSFP modules where 1Gbps support is added as well as support
for older QSFP active direct attach cables which pre-date SFF-8436 v3.6.

The following are changes since commit 5b2941b18dc5f60a5c14a5c15693f9c58b0dd922:
  Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jesse/openvswitch
and are available in the git repository at:
  git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-next master

Don Skidmore (2):
  ixgbe: fix incorrect limit value in ring transverse
  ixgbe: cleanup some log messages

Emil Tantilov (6):
  ixgbe: fix link test when connected to 1Gbps link partner
  ixgbe: zero out mailbox buffer on init
  ixgbe: fix SFF data dumps of SFP+ modules from an offset
  ixgbe: add 1Gbps support for QSFP+
  ixgbe: include QSFP PHY types in ixgbe_is_sfp()
  ixgbe: add support for older QSFP active DA cables

Jacob Keller (1):
  ixgbe: disable link when adapter goes down

Mark Rustad (1):
  ixgbe: Check return value on eeprom reads

 drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c   | 93 ++++++++++++++++++----
 drivers/net/ethernet/intel/ixgbe/ixgbe_common.c  | 67 ++++++++++------
 drivers/net/ethernet/intel/ixgbe/ixgbe_common.h  |  6 +-
 drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c | 40 ++++------
 drivers/net/ethernet/intel/ixgbe/ixgbe_main.c    | 13 +++-
 drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c     | 98 +++++++++++++++++++-----
 drivers/net/ethernet/intel/ixgbe/ixgbe_phy.h     |  5 ++
 drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c   |  4 +-
 drivers/net/ethernet/intel/ixgbe/ixgbe_type.h    |  2 +
 9 files changed, 238 insertions(+), 90 deletions(-)

-- 
1.8.3.1

[net-next 01/10] ixgbe: disable link when adapter goes down

[Jeff Kirsher]

From: Jacob Keller <jacob.e.keller@intel.com>

This patch fixes an issue with the 82599 adapter where it can potentially keep
link lights up when the adapter has gone down. The patch adds a function which
ensures link is disabled, and calls this function when the adapter transitions
to a down state.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c | 20 ++++++++++++++++++++
 drivers/net/ethernet/intel/ixgbe/ixgbe_main.c  |  3 +++
 drivers/net/ethernet/intel/ixgbe/ixgbe_type.h  |  2 ++
 3 files changed, 25 insertions(+)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c
index 207f68f..51ee8ad 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c
@@ -49,6 +49,7 @@ static s32 ixgbe_setup_mac_link_multispeed_fiber(struct ixgbe_hw *hw,
 static s32 ixgbe_setup_mac_link_smartspeed(struct ixgbe_hw *hw,
                                            ixgbe_link_speed speed,
                                            bool autoneg_wait_to_complete);
+static void ixgbe_stop_mac_link_on_d3_82599(struct ixgbe_hw *hw);
 static s32 ixgbe_start_mac_link_82599(struct ixgbe_hw *hw,
 				      bool autoneg_wait_to_complete);
 static s32 ixgbe_setup_mac_link_82599(struct ixgbe_hw *hw,
@@ -432,6 +433,24 @@ out:
 }
 
 /**
+ * ixgbe_stop_mac_link_on_d3_82599 - Disables link on D3
+ * @hw: pointer to hardware structure
+ *
+ * Disables link, should be called during D3 power down sequence.
+ *
+ */
+static void ixgbe_stop_mac_link_on_d3_82599(struct ixgbe_hw *hw)
+{
+	u32 autoc2_reg;
+
+	if (!hw->mng_fw_enabled && !hw->wol_enabled) {
+		autoc2_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC2);
+		autoc2_reg |= IXGBE_AUTOC2_LINK_DISABLE_ON_D3_MASK;
+		IXGBE_WRITE_REG(hw, IXGBE_AUTOC2, autoc2_reg);
+	}
+}
+
+/**
  *  ixgbe_start_mac_link_82599 - Setup MAC link settings
  *  @hw: pointer to hardware structure
  *  @autoneg_wait_to_complete: true when waiting for completion is needed
@@ -2477,6 +2496,7 @@ static struct ixgbe_mac_operations mac_ops_82599 = {
 	.set_lan_id             = &ixgbe_set_lan_id_multi_port_pcie,
 	.read_analog_reg8       = &ixgbe_read_analog_reg8_82599,
 	.write_analog_reg8      = &ixgbe_write_analog_reg8_82599,
+	.stop_link_on_d3	= &ixgbe_stop_mac_link_on_d3_82599,
 	.setup_link             = &ixgbe_setup_mac_link_82599,
 	.set_rxpba		= &ixgbe_set_rxpba_generic,
 	.check_link             = &ixgbe_check_mac_link_generic,
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index 128d6b8..cf1b41e 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -5292,6 +5292,9 @@ static int __ixgbe_shutdown(struct pci_dev *pdev, bool *enable_wake)
 		return retval;
 
 #endif
+	if (hw->mac.ops.stop_link_on_d3)
+		hw->mac.ops.stop_link_on_d3(hw);
+
 	if (wufc) {
 		ixgbe_set_rx_mode(netdev);
 
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h b/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h
index 161ff18..6442cf8 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h
@@ -1596,6 +1596,7 @@ enum {
 #define IXGBE_AUTOC2_10G_KR  (0x0 << IXGBE_AUTOC2_10G_SERIAL_PMA_PMD_SHIFT)
 #define IXGBE_AUTOC2_10G_XFI (0x1 << IXGBE_AUTOC2_10G_SERIAL_PMA_PMD_SHIFT)
 #define IXGBE_AUTOC2_10G_SFI (0x2 << IXGBE_AUTOC2_10G_SERIAL_PMA_PMD_SHIFT)
+#define IXGBE_AUTOC2_LINK_DISABLE_ON_D3_MASK  0x50000000
 #define IXGBE_AUTOC2_LINK_DISABLE_MASK        0x70000000
 
 #define IXGBE_MACC_FLU       0x00000001
@@ -2847,6 +2848,7 @@ struct ixgbe_mac_operations {
 	void (*disable_tx_laser)(struct ixgbe_hw *);
 	void (*enable_tx_laser)(struct ixgbe_hw *);
 	void (*flap_tx_laser)(struct ixgbe_hw *);
+	void (*stop_link_on_d3)(struct ixgbe_hw *);
 	s32 (*setup_link)(struct ixgbe_hw *, ixgbe_link_speed, bool);
 	s32 (*check_link)(struct ixgbe_hw *, ixgbe_link_speed *, bool *, bool);
 	s32 (*get_link_capabilities)(struct ixgbe_hw *, ixgbe_link_speed *,
-- 
1.8.3.1

[net-next 02/10] ixgbe: Check return value on eeprom reads

[Jeff Kirsher]

From: Mark Rustad <mark.d.rustad@intel.com>

This patch fixes the possible use of uninitialized memory by checking the
return value on eeprom reads. These issues were identified by static
analysis. In many cases error messages will be produced so that corrupted
eeprom issues will be more visible.

Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c  | 38 ++++++++++----
 drivers/net/ethernet/intel/ixgbe/ixgbe_common.c | 67 +++++++++++++++++--------
 drivers/net/ethernet/intel/ixgbe/ixgbe_common.h |  6 ++-
 drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c    | 35 ++++++++++---
 4 files changed, 107 insertions(+), 39 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c
index 51ee8ad..e4f4f4b 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c
@@ -142,11 +142,13 @@ static s32 ixgbe_setup_sfp_modules_82599(struct ixgbe_hw *hw)
 			goto setup_sfp_out;
 		}
 
-		hw->eeprom.ops.read(hw, ++data_offset, &data_value);
+		if (hw->eeprom.ops.read(hw, ++data_offset, &data_value))
+			goto setup_sfp_err;
 		while (data_value != 0xffff) {
 			IXGBE_WRITE_REG(hw, IXGBE_CORECTL, data_value);
 			IXGBE_WRITE_FLUSH(hw);
-			hw->eeprom.ops.read(hw, ++data_offset, &data_value);
+			if (hw->eeprom.ops.read(hw, ++data_offset, &data_value))
+				goto setup_sfp_err;
 		}
 
 		/* Release the semaphore */
@@ -192,6 +194,17 @@ static s32 ixgbe_setup_sfp_modules_82599(struct ixgbe_hw *hw)
 
 setup_sfp_out:
 	return ret_val;
+
+setup_sfp_err:
+	/* Release the semaphore */
+	hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_MAC_CSR_SM);
+	/* Delay obtaining semaphore again to allow FW access,
+	 * semaphore_delay is in ms usleep_range needs us.
+	 */
+	usleep_range(hw->eeprom.semaphore_delay * 1000,
+		     hw->eeprom.semaphore_delay * 2000);
+	hw_err(hw, "eeprom read at offset %d failed\n", data_offset);
+	return IXGBE_ERR_SFP_SETUP_NOT_COMPLETE;
 }
 
 static s32 ixgbe_get_invariants_82599(struct ixgbe_hw *hw)
@@ -2180,6 +2193,7 @@ static s32 ixgbe_verify_fw_version_82599(struct ixgbe_hw *hw)
 {
 	s32 status = IXGBE_ERR_EEPROM_VERSION;
 	u16 fw_offset, fw_ptp_cfg_offset;
+	u16 offset;
 	u16 fw_version = 0;
 
 	/* firmware check is only necessary for SFI devices */
@@ -2189,29 +2203,35 @@ static s32 ixgbe_verify_fw_version_82599(struct ixgbe_hw *hw)
 	}
 
 	/* get the offset to the Firmware Module block */
-	hw->eeprom.ops.read(hw, IXGBE_FW_PTR, &fw_offset);
+	offset = IXGBE_FW_PTR;
+	if (hw->eeprom.ops.read(hw, offset, &fw_offset))
+		goto fw_version_err;
 
 	if ((fw_offset == 0) || (fw_offset == 0xFFFF))
 		goto fw_version_out;
 
 	/* get the offset to the Pass Through Patch Configuration block */
-	hw->eeprom.ops.read(hw, (fw_offset +
-	                         IXGBE_FW_PASSTHROUGH_PATCH_CONFIG_PTR),
-	                         &fw_ptp_cfg_offset);
+	offset = fw_offset + IXGBE_FW_PASSTHROUGH_PATCH_CONFIG_PTR;
+	if (hw->eeprom.ops.read(hw, offset, &fw_ptp_cfg_offset))
+		goto fw_version_err;
 
 	if ((fw_ptp_cfg_offset == 0) || (fw_ptp_cfg_offset == 0xFFFF))
 		goto fw_version_out;
 
 	/* get the firmware version */
-	hw->eeprom.ops.read(hw, (fw_ptp_cfg_offset +
-	                         IXGBE_FW_PATCH_VERSION_4),
-	                         &fw_version);
+	offset = fw_ptp_cfg_offset + IXGBE_FW_PATCH_VERSION_4;
+	if (hw->eeprom.ops.read(hw, offset, &fw_version))
+		goto fw_version_err;
 
 	if (fw_version > 0x5)
 		status = 0;
 
 fw_version_out:
 	return status;
+
+fw_version_err:
+	hw_err(hw, "eeprom read at offset %d failed\n", offset);
+	return IXGBE_ERR_EEPROM_VERSION;
 }
 
 /**
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
index 50e62a2..b5c434b 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
@@ -2740,13 +2740,19 @@ out:
 static s32 ixgbe_get_san_mac_addr_offset(struct ixgbe_hw *hw,
                                         u16 *san_mac_offset)
 {
+	s32 ret_val;
+
 	/*
 	 * First read the EEPROM pointer to see if the MAC addresses are
 	 * available.
 	 */
-	hw->eeprom.ops.read(hw, IXGBE_SAN_MAC_ADDR_PTR, san_mac_offset);
+	ret_val = hw->eeprom.ops.read(hw, IXGBE_SAN_MAC_ADDR_PTR,
+				      san_mac_offset);
+	if (ret_val)
+		hw_err(hw, "eeprom read at offset %d failed\n",
+		       IXGBE_SAN_MAC_ADDR_PTR);
 
-	return 0;
+	return ret_val;
 }
 
 /**
@@ -2763,23 +2769,16 @@ s32 ixgbe_get_san_mac_addr_generic(struct ixgbe_hw *hw, u8 *san_mac_addr)
 {
 	u16 san_mac_data, san_mac_offset;
 	u8 i;
+	s32 ret_val;
 
 	/*
 	 * First read the EEPROM pointer to see if the MAC addresses are
 	 * available.  If they're not, no point in calling set_lan_id() here.
 	 */
-	ixgbe_get_san_mac_addr_offset(hw, &san_mac_offset);
+	ret_val = ixgbe_get_san_mac_addr_offset(hw, &san_mac_offset);
+	if (ret_val || san_mac_offset == 0 || san_mac_offset == 0xFFFF)
 
-	if ((san_mac_offset == 0) || (san_mac_offset == 0xFFFF)) {
-		/*
-		 * No addresses available in this EEPROM.  It's not an
-		 * error though, so just wipe the local address and return.
-		 */
-		for (i = 0; i < 6; i++)
-			san_mac_addr[i] = 0xFF;
-
-		goto san_mac_addr_out;
-	}
+		goto san_mac_addr_clr;
 
 	/* make sure we know which port we need to program */
 	hw->mac.ops.set_lan_id(hw);
@@ -2787,14 +2786,26 @@ s32 ixgbe_get_san_mac_addr_generic(struct ixgbe_hw *hw, u8 *san_mac_addr)
 	(hw->bus.func) ? (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT1_OFFSET) :
 	                 (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT0_OFFSET);
 	for (i = 0; i < 3; i++) {
-		hw->eeprom.ops.read(hw, san_mac_offset, &san_mac_data);
+		ret_val = hw->eeprom.ops.read(hw, san_mac_offset,
+					      &san_mac_data);
+		if (ret_val) {
+			hw_err(hw, "eeprom read at offset %d failed\n",
+			       san_mac_offset);
+			goto san_mac_addr_clr;
+		}
 		san_mac_addr[i * 2] = (u8)(san_mac_data);
 		san_mac_addr[i * 2 + 1] = (u8)(san_mac_data >> 8);
 		san_mac_offset++;
 	}
-
-san_mac_addr_out:
 	return 0;
+
+san_mac_addr_clr:
+	/* No addresses available in this EEPROM.  It's not necessarily an
+	 * error though, so just wipe the local address and return.
+	 */
+	for (i = 0; i < 6; i++)
+		san_mac_addr[i] = 0xFF;
+	return ret_val;
 }
 
 /**
@@ -3243,8 +3254,9 @@ s32 ixgbe_get_wwn_prefix_generic(struct ixgbe_hw *hw, u16 *wwnn_prefix,
 	*wwpn_prefix = 0xFFFF;
 
 	/* check if alternative SAN MAC is supported */
-	hw->eeprom.ops.read(hw, IXGBE_ALT_SAN_MAC_ADDR_BLK_PTR,
-	                    &alt_san_mac_blk_offset);
+	offset = IXGBE_ALT_SAN_MAC_ADDR_BLK_PTR;
+	if (hw->eeprom.ops.read(hw, offset, &alt_san_mac_blk_offset))
+		goto wwn_prefix_err;
 
 	if ((alt_san_mac_blk_offset == 0) ||
 	    (alt_san_mac_blk_offset == 0xFFFF))
@@ -3252,19 +3264,26 @@ s32 ixgbe_get_wwn_prefix_generic(struct ixgbe_hw *hw, u16 *wwnn_prefix,
 
 	/* check capability in alternative san mac address block */
 	offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_CAPS_OFFSET;
-	hw->eeprom.ops.read(hw, offset, &caps);
+	if (hw->eeprom.ops.read(hw, offset, &caps))
+		goto wwn_prefix_err;
 	if (!(caps & IXGBE_ALT_SAN_MAC_ADDR_CAPS_ALTWWN))
 		goto wwn_prefix_out;
 
 	/* get the corresponding prefix for WWNN/WWPN */
 	offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWNN_OFFSET;
-	hw->eeprom.ops.read(hw, offset, wwnn_prefix);
+	if (hw->eeprom.ops.read(hw, offset, wwnn_prefix))
+		hw_err(hw, "eeprom read at offset %d failed\n", offset);
 
 	offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWPN_OFFSET;
-	hw->eeprom.ops.read(hw, offset, wwpn_prefix);
+	if (hw->eeprom.ops.read(hw, offset, wwpn_prefix))
+		goto wwn_prefix_err;
 
 wwn_prefix_out:
 	return 0;
+
+wwn_prefix_err:
+	hw_err(hw, "eeprom read at offset %d failed\n", offset);
+	return 0;
 }
 
 /**
@@ -3778,7 +3797,11 @@ s32 ixgbe_init_thermal_sensor_thresh_generic(struct ixgbe_hw *hw)
 		u8  sensor_index;
 		u8  sensor_location;
 
-		hw->eeprom.ops.read(hw, (ets_offset + 1 + i), &ets_sensor);
+		if (hw->eeprom.ops.read(hw, ets_offset + 1 + i, &ets_sensor)) {
+			hw_err(hw, "eeprom read at offset %d failed\n",
+			       ets_offset + 1 + i);
+			continue;
+		}
 		sensor_index = ((ets_sensor & IXGBE_ETS_DATA_INDEX_MASK) >>
 				IXGBE_ETS_DATA_INDEX_SHIFT);
 		sensor_location = ((ets_sensor & IXGBE_ETS_DATA_LOC_MASK) >>
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.h b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.h
index 1315b8a..d259dc7 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.h
@@ -143,8 +143,12 @@ s32 ixgbe_init_thermal_sensor_thresh_generic(struct ixgbe_hw *hw);
 
 #define IXGBE_WRITE_FLUSH(a) IXGBE_READ_REG(a, IXGBE_STATUS)
 
+#define ixgbe_hw_to_netdev(hw) (((struct ixgbe_adapter *)(hw)->back)->netdev)
+
 #define hw_dbg(hw, format, arg...) \
-	netdev_dbg(((struct ixgbe_adapter *)(hw->back))->netdev, format, ##arg)
+	netdev_dbg(ixgbe_hw_to_netdev(hw), format, ## arg)
+#define hw_err(hw, format, arg...) \
+	netdev_err(ixgbe_hw_to_netdev(hw), format, ## arg)
 #define e_dev_info(format, arg...) \
 	dev_info(&adapter->pdev->dev, format, ## arg)
 #define e_dev_warn(format, arg...) \
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c
index 369eef5..6a4a799 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c
@@ -791,6 +791,8 @@ s32 ixgbe_reset_phy_nl(struct ixgbe_hw *hw)
 		 * Read control word from PHY init contents offset
 		 */
 		ret_val = hw->eeprom.ops.read(hw, data_offset, &eword);
+		if (ret_val)
+			goto err_eeprom;
 		control = (eword & IXGBE_CONTROL_MASK_NL) >>
 		           IXGBE_CONTROL_SHIFT_NL;
 		edata = eword & IXGBE_DATA_MASK_NL;
@@ -803,10 +805,15 @@ s32 ixgbe_reset_phy_nl(struct ixgbe_hw *hw)
 		case IXGBE_DATA_NL:
 			hw_dbg(hw, "DATA:\n");
 			data_offset++;
-			hw->eeprom.ops.read(hw, data_offset++,
-			                    &phy_offset);
+			ret_val = hw->eeprom.ops.read(hw, data_offset++,
+						      &phy_offset);
+			if (ret_val)
+				goto err_eeprom;
 			for (i = 0; i < edata; i++) {
-				hw->eeprom.ops.read(hw, data_offset, &eword);
+				ret_val = hw->eeprom.ops.read(hw, data_offset,
+							      &eword);
+				if (ret_val)
+					goto err_eeprom;
 				hw->phy.ops.write_reg(hw, phy_offset,
 				                      MDIO_MMD_PMAPMD, eword);
 				hw_dbg(hw, "Wrote %4.4x to %4.4x\n", eword,
@@ -838,6 +845,10 @@ s32 ixgbe_reset_phy_nl(struct ixgbe_hw *hw)
 
 out:
 	return ret_val;
+
+err_eeprom:
+	hw_err(hw, "eeprom read at offset %d failed\n", data_offset);
+	return IXGBE_ERR_PHY;
 }
 
 /**
@@ -1339,7 +1350,11 @@ s32 ixgbe_get_sfp_init_sequence_offsets(struct ixgbe_hw *hw,
 		sfp_type = ixgbe_sfp_type_srlr_core1;
 
 	/* Read offset to PHY init contents */
-	hw->eeprom.ops.read(hw, IXGBE_PHY_INIT_OFFSET_NL, list_offset);
+	if (hw->eeprom.ops.read(hw, IXGBE_PHY_INIT_OFFSET_NL, list_offset)) {
+		hw_err(hw, "eeprom read at %d failed\n",
+		       IXGBE_PHY_INIT_OFFSET_NL);
+		return IXGBE_ERR_SFP_NO_INIT_SEQ_PRESENT;
+	}
 
 	if ((!*list_offset) || (*list_offset == 0xFFFF))
 		return IXGBE_ERR_SFP_NO_INIT_SEQ_PRESENT;
@@ -1351,12 +1366,14 @@ s32 ixgbe_get_sfp_init_sequence_offsets(struct ixgbe_hw *hw,
 	 * Find the matching SFP ID in the EEPROM
 	 * and program the init sequence
 	 */
-	hw->eeprom.ops.read(hw, *list_offset, &sfp_id);
+	if (hw->eeprom.ops.read(hw, *list_offset, &sfp_id))
+		goto err_phy;
 
 	while (sfp_id != IXGBE_PHY_INIT_END_NL) {
 		if (sfp_id == sfp_type) {
 			(*list_offset)++;
-			hw->eeprom.ops.read(hw, *list_offset, data_offset);
+			if (hw->eeprom.ops.read(hw, *list_offset, data_offset))
+				goto err_phy;
 			if ((!*data_offset) || (*data_offset == 0xFFFF)) {
 				hw_dbg(hw, "SFP+ module not supported\n");
 				return IXGBE_ERR_SFP_NOT_SUPPORTED;
@@ -1366,7 +1383,7 @@ s32 ixgbe_get_sfp_init_sequence_offsets(struct ixgbe_hw *hw,
 		} else {
 			(*list_offset) += 2;
 			if (hw->eeprom.ops.read(hw, *list_offset, &sfp_id))
-				return IXGBE_ERR_PHY;
+				goto err_phy;
 		}
 	}
 
@@ -1376,6 +1393,10 @@ s32 ixgbe_get_sfp_init_sequence_offsets(struct ixgbe_hw *hw,
 	}
 
 	return 0;
+
+err_phy:
+	hw_err(hw, "eeprom read at offset %d failed\n", *list_offset);
+	return IXGBE_ERR_PHY;
 }
 
 /**
-- 
1.8.3.1

[net-next 03/10] ixgbe: fix incorrect limit value in ring transverse

[Jeff Kirsher]

From: Don Skidmore <donald.c.skidmore@intel.com>

We were transversing the tx_ring with IXGBE_NUM_RX_QUEUES.  Now this define
happens to have the correct value but this is misleading and a change later
could easily make this no longer true.  I updated it to netdev->num_tx_queues
like we use in ixgbe_get_strings().

Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
index 50c1e9b..db0dbf6 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
@@ -1049,7 +1049,7 @@ static void ixgbe_get_ethtool_stats(struct net_device *netdev,
 		data[i] = (ixgbe_gstrings_stats[i].sizeof_stat ==
 		           sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
 	}
-	for (j = 0; j < IXGBE_NUM_RX_QUEUES; j++) {
+	for (j = 0; j < netdev->num_tx_queues; j++) {
 		ring = adapter->tx_ring[j];
 		if (!ring) {
 			data[i] = 0;
-- 
1.8.3.1

[net-next 04/10] ixgbe: fix link test when connected to 1Gbps link partner

[Jeff Kirsher]

From: Emil Tantilov <emil.s.tantilov@intel.com>

This patch is a partial reverse of:
commit dfcc4615f09c33454bc553567f7c7506cae60cb9

Specifically forcing the laser before the link check can lead to
inconsistent results because it does not guarantee that the link will be
negotiated correctly. Such is the case when dual speed SFP+ module is
connected to a gigabit link partner.

Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c | 26 ++++++++----------------
 1 file changed, 9 insertions(+), 17 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
index db0dbf6..57465d8 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
@@ -1885,11 +1885,11 @@ static void ixgbe_diag_test(struct net_device *netdev,
                             struct ethtool_test *eth_test, u64 *data)
 {
 	struct ixgbe_adapter *adapter = netdev_priv(netdev);
-	struct ixgbe_hw *hw = &adapter->hw;
 	bool if_running = netif_running(netdev);
 
 	set_bit(__IXGBE_TESTING, &adapter->state);
 	if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
+		struct ixgbe_hw *hw = &adapter->hw;
 		if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
 			int i;
 			for (i = 0; i < adapter->num_vfs; i++) {
@@ -1913,21 +1913,18 @@ static void ixgbe_diag_test(struct net_device *netdev,
 		/* Offline tests */
 		e_info(hw, "offline testing starting\n");
 
-		if (if_running)
-			/* indicate we're in test mode */
-			dev_close(netdev);
-
-		/* bringing adapter down disables SFP+ optics */
-		if (hw->mac.ops.enable_tx_laser)
-			hw->mac.ops.enable_tx_laser(hw);
-
 		/* Link test performed before hardware reset so autoneg doesn't
 		 * interfere with test result
 		 */
 		if (ixgbe_link_test(adapter, &data[4]))
 			eth_test->flags |= ETH_TEST_FL_FAILED;
 
-		ixgbe_reset(adapter);
+		if (if_running)
+			/* indicate we're in test mode */
+			dev_close(netdev);
+		else
+			ixgbe_reset(adapter);
+
 		e_info(hw, "register testing starting\n");
 		if (ixgbe_reg_test(adapter, &data[0]))
 			eth_test->flags |= ETH_TEST_FL_FAILED;
@@ -1964,13 +1961,11 @@ skip_loopback:
 		clear_bit(__IXGBE_TESTING, &adapter->state);
 		if (if_running)
 			dev_open(netdev);
+		else if (hw->mac.ops.disable_tx_laser)
+			hw->mac.ops.disable_tx_laser(hw);
 	} else {
 		e_info(hw, "online testing starting\n");
 
-		/* if adapter is down, SFP+ optics will be disabled */
-		if (!if_running && hw->mac.ops.enable_tx_laser)
-			hw->mac.ops.enable_tx_laser(hw);
-
 		/* Online tests */
 		if (ixgbe_link_test(adapter, &data[4]))
 			eth_test->flags |= ETH_TEST_FL_FAILED;
@@ -1984,9 +1979,6 @@ skip_loopback:
 		clear_bit(__IXGBE_TESTING, &adapter->state);
 	}
 
-	/* if adapter was down, ensure SFP+ optics are disabled again */
-	if (!if_running && hw->mac.ops.disable_tx_laser)
-		hw->mac.ops.disable_tx_laser(hw);
 skip_ol_tests:
 	msleep_interruptible(4 * 1000);
 }
-- 
1.8.3.1

[net-next 05/10] ixgbe: zero out mailbox buffer on init

[Jeff Kirsher]

From: Emil Tantilov <emil.s.tantilov@intel.com>

This patch initializes the msgbuf array to 0 in order to avoid using random
numbers from the memory as MAC address for the VF.

Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
index 73c8e73..276d7b1 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
@@ -639,8 +639,8 @@ static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf)
 {
 	struct ixgbe_hw *hw = &adapter->hw;
 	unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses;
-	u32 reg, msgbuf[4];
-	u32 reg_offset, vf_shift;
+	u32 reg, reg_offset, vf_shift;
+	u32 msgbuf[4] = {0, 0, 0, 0};
 	u8 *addr = (u8 *)(&msgbuf[1]);
 
 	e_info(probe, "VF Reset msg received from vf %d\n", vf);
-- 
1.8.3.1

[net-next 06/10] ixgbe: cleanup some log messages

[Jeff Kirsher]

From: Don Skidmore <donald.c.skidmore@intel.com>

Some minor log messages cleanup, changing the level one message is logged,
adding a bit of detail to another and put all the text on one line.

Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 6 ++----
 drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c  | 2 +-
 2 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index cf1b41e..4688057 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -7605,10 +7605,8 @@ static int ixgbe_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	    hw->mac.type == ixgbe_mac_82598EB) {
 		err = 0;
 	} else if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) {
-		e_dev_err("failed to load because an unsupported SFP+ "
-			  "module type was detected.\n");
-		e_dev_err("Reload the driver after installing a supported "
-			  "module.\n");
+		e_dev_err("failed to load because an unsupported SFP+ or QSFP module type was detected.\n");
+		e_dev_err("Reload the driver after installing a supported module.\n");
 		goto err_sw_init;
 	} else if (err) {
 		e_dev_err("HW Init failed: %d\n", err);
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c
index 6a4a799..033997b 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c
@@ -1282,7 +1282,7 @@ s32 ixgbe_identify_qsfp_module_generic(struct ixgbe_hw *hw)
 				status = 0;
 			} else {
 				if (hw->allow_unsupported_sfp == true) {
-					e_warn(hw, "WARNING: Intel (R) Network Connections are quality tested using Intel (R) Ethernet Optics. Using untested modules is not supported and may cause unstable operation or damage to the module or the adapter. Intel Corporation is not responsible for any harm caused by using untested modules.\n");
+					e_warn(drv, "WARNING: Intel (R) Network Connections are quality tested using Intel (R) Ethernet Optics. Using untested modules is not supported and may cause unstable operation or damage to the module or the adapter. Intel Corporation is not responsible for any harm caused by using untested modules.\n");
 					status = 0;
 				} else {
 					hw_dbg(hw,
-- 
1.8.3.1

[net-next 07/10] ixgbe: fix SFF data dumps of SFP+ modules from an offset

[Jeff Kirsher]

From: Emil Tantilov <emil.s.tantilov@intel.com>

This patch fixes the read loop for the I2C data to account for the offset.

Also includes a whitespace cleanup and removes ret_val as it is not needed.

CC: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Reported-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
index 57465d8..c80b827 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
@@ -2945,28 +2945,27 @@ static int ixgbe_get_module_eeprom(struct net_device *dev,
 	u32 status = IXGBE_ERR_PHY_ADDR_INVALID;
 	u8 databyte = 0xFF;
 	int i = 0;
-	int ret_val = 0;
 
 	if (ee->len == 0)
 		return -EINVAL;
 
-	for (i = ee->offset; i < ee->len; i++) {
+	for (i = ee->offset; i < ee->offset + ee->len; i++) {
 		/* I2C reads can take long time */
 		if (test_bit(__IXGBE_IN_SFP_INIT, &adapter->state))
 			return -EBUSY;
 
 		if (i < ETH_MODULE_SFF_8079_LEN)
-			status  = hw->phy.ops.read_i2c_eeprom(hw, i, &databyte);
+			status = hw->phy.ops.read_i2c_eeprom(hw, i, &databyte);
 		else
 			status = hw->phy.ops.read_i2c_sff8472(hw, i, &databyte);
 
 		if (status != 0)
-			ret_val = -EIO;
+			return -EIO;
 
 		data[i - ee->offset] = databyte;
 	}
 
-	return ret_val;
+	return 0;
 }
 
 static const struct ethtool_ops ixgbe_ethtool_ops = {
-- 
1.8.3.1

[net-next 08/10] ixgbe: add 1Gbps support for QSFP+

[Jeff Kirsher]

From: Emil Tantilov <emil.s.tantilov@intel.com>

This patch adds GB speed support for QSFP+ modules.
Autonegotiation is not supported with QSFP+. The user will have to set
the desired speed on both link partners using ethtool advertise setting.

Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c   | 35 ++++++++++++++++++------
 drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c |  3 --
 drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c     |  6 ++++
 3 files changed, 33 insertions(+), 11 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c
index e4f4f4b..007a008 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c
@@ -379,8 +379,13 @@ static s32 ixgbe_get_link_capabilities_82599(struct ixgbe_hw *hw,
 
 	if (hw->phy.multispeed_fiber) {
 		*speed |= IXGBE_LINK_SPEED_10GB_FULL |
-		          IXGBE_LINK_SPEED_1GB_FULL;
-		*autoneg = true;
+			  IXGBE_LINK_SPEED_1GB_FULL;
+
+		/* QSFP must not enable auto-negotiation */
+		if (hw->phy.media_type == ixgbe_media_type_fiber_qsfp)
+			*autoneg = false;
+		else
+			*autoneg = true;
 	}
 
 out:
@@ -700,13 +705,18 @@ static s32 ixgbe_setup_mac_link_multispeed_fiber(struct ixgbe_hw *hw,
 			goto out;
 
 		/* Set the module link speed */
-		if (hw->phy.media_type == ixgbe_media_type_fiber_fixed) {
-			ixgbe_set_fiber_fixed_speed(hw,
-					IXGBE_LINK_SPEED_10GB_FULL);
-		} else {
+		switch (hw->phy.media_type) {
+		case ixgbe_media_type_fiber:
 			esdp_reg |= (IXGBE_ESDP_SDP5_DIR | IXGBE_ESDP_SDP5);
 			IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp_reg);
 			IXGBE_WRITE_FLUSH(hw);
+			break;
+		case ixgbe_media_type_fiber_qsfp:
+			/* QSFP module automatically detects MAC link speed */
+			break;
+		default:
+			hw_dbg(hw, "Unexpected media type.\n");
+			break;
 		}
 
 		/* Allow module to change analog characteristics (1G->10G) */
@@ -757,14 +767,23 @@ static s32 ixgbe_setup_mac_link_multispeed_fiber(struct ixgbe_hw *hw,
 			goto out;
 
 		/* Set the module link speed */
-		if (hw->phy.media_type == ixgbe_media_type_fiber_fixed) {
+		switch (hw->phy.media_type) {
+		case ixgbe_media_type_fiber_fixed:
 			ixgbe_set_fiber_fixed_speed(hw,
 						IXGBE_LINK_SPEED_1GB_FULL);
-		} else {
+			break;
+		case ixgbe_media_type_fiber:
 			esdp_reg &= ~IXGBE_ESDP_SDP5;
 			esdp_reg |= IXGBE_ESDP_SDP5_DIR;
 			IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp_reg);
 			IXGBE_WRITE_FLUSH(hw);
+			break;
+		case ixgbe_media_type_fiber_qsfp:
+			/* QSFP module automatically detects MAC link speed */
+			break;
+		default:
+			hw_dbg(hw, "Unexpected media type.\n");
+			break;
 		}
 
 		/* Allow module to change analog characteristics (10G->1G) */
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
index c80b827..d6e4526 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
@@ -311,9 +311,6 @@ static int ixgbe_set_settings(struct net_device *netdev,
 		 * this function does not support duplex forcing, but can
 		 * limit the advertising of the adapter to the specified speed
 		 */
-		if (ecmd->autoneg == AUTONEG_DISABLE)
-			return -EINVAL;
-
 		if (ecmd->advertising & ~ecmd->supported)
 			return -EINVAL;
 
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c
index 033997b..e89b34e 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c
@@ -1205,6 +1205,12 @@ s32 ixgbe_identify_qsfp_module_generic(struct ixgbe_hw *hw)
 	if (status != 0)
 		goto err_read_i2c_eeprom;
 
+	status = hw->phy.ops.read_i2c_eeprom(hw, IXGBE_SFF_QSFP_1GBE_COMP,
+					     &comp_codes_1g);
+
+	if (status != 0)
+		goto err_read_i2c_eeprom;
+
 	if (comp_codes_10g & IXGBE_SFF_QSFP_DA_PASSIVE_CABLE) {
 		hw->phy.type = ixgbe_phy_qsfp_passive_unknown;
 		if (hw->bus.lan_id == 0)
-- 
1.8.3.1

[net-next 09/10] ixgbe: include QSFP PHY types in ixgbe_is_sfp()

[Jeff Kirsher]

From: Emil Tantilov <emil.s.tantilov@intel.com>

This patch makes sure that QSFP+ modules use the SFP+ code path for
setting up link.

Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index 4688057..7aba452 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -4175,6 +4175,10 @@ static inline bool ixgbe_is_sfp(struct ixgbe_hw *hw)
 	case ixgbe_phy_sfp_passive_unknown:
 	case ixgbe_phy_sfp_active_unknown:
 	case ixgbe_phy_sfp_ftl_active:
+	case ixgbe_phy_qsfp_passive_unknown:
+	case ixgbe_phy_qsfp_active_unknown:
+	case ixgbe_phy_qsfp_intel:
+	case ixgbe_phy_qsfp_unknown:
 		return true;
 	case ixgbe_phy_nl:
 		if (hw->mac.type == ixgbe_mac_82598EB)
-- 
1.8.3.1

[net-next 10/10] ixgbe: add support for older QSFP active DA cables

[Jeff Kirsher]

From: Emil Tantilov <emil.s.tantilov@intel.com>

This patch adds support for QSFP active direct attach (DA) cables which
pre-date SFF-8436 v3.6.

Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c | 55 +++++++++++++++++++++++-----
 drivers/net/ethernet/intel/ixgbe/ixgbe_phy.h |  5 +++
 2 files changed, 50 insertions(+), 10 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c
index e89b34e..e4c6760 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c
@@ -1175,6 +1175,10 @@ s32 ixgbe_identify_qsfp_module_generic(struct ixgbe_hw *hw)
 	u8 comp_codes_10g = 0;
 	u8 oui_bytes[3] = {0, 0, 0};
 	u16 enforce_sfp = 0;
+	u8 connector = 0;
+	u8 cable_length = 0;
+	u8 device_tech = 0;
+	bool active_cable = false;
 
 	if (hw->mac.ops.get_media_type(hw) != ixgbe_media_type_fiber_qsfp) {
 		hw->phy.sfp_type = ixgbe_sfp_type_not_present;
@@ -1217,12 +1221,6 @@ s32 ixgbe_identify_qsfp_module_generic(struct ixgbe_hw *hw)
 			hw->phy.sfp_type = ixgbe_sfp_type_da_cu_core0;
 		else
 			hw->phy.sfp_type = ixgbe_sfp_type_da_cu_core1;
-	} else if (comp_codes_10g & IXGBE_SFF_QSFP_DA_ACTIVE_CABLE) {
-		hw->phy.type = ixgbe_phy_qsfp_active_unknown;
-		if (hw->bus.lan_id == 0)
-			hw->phy.sfp_type = ixgbe_sfp_type_da_act_lmt_core0;
-		else
-			hw->phy.sfp_type = ixgbe_sfp_type_da_act_lmt_core1;
 	} else if (comp_codes_10g & (IXGBE_SFF_10GBASESR_CAPABLE |
 				     IXGBE_SFF_10GBASELR_CAPABLE)) {
 		if (hw->bus.lan_id == 0)
@@ -1230,10 +1228,47 @@ s32 ixgbe_identify_qsfp_module_generic(struct ixgbe_hw *hw)
 		else
 			hw->phy.sfp_type = ixgbe_sfp_type_srlr_core1;
 	} else {
-		/* unsupported module type */
-		hw->phy.type = ixgbe_phy_sfp_unsupported;
-		status = IXGBE_ERR_SFP_NOT_SUPPORTED;
-		goto out;
+		if (comp_codes_10g & IXGBE_SFF_QSFP_DA_ACTIVE_CABLE)
+			active_cable = true;
+
+		if (!active_cable) {
+			/* check for active DA cables that pre-date
+			 * SFF-8436 v3.6
+			 */
+			hw->phy.ops.read_i2c_eeprom(hw,
+					IXGBE_SFF_QSFP_CONNECTOR,
+					&connector);
+
+			hw->phy.ops.read_i2c_eeprom(hw,
+					IXGBE_SFF_QSFP_CABLE_LENGTH,
+					&cable_length);
+
+			hw->phy.ops.read_i2c_eeprom(hw,
+					IXGBE_SFF_QSFP_DEVICE_TECH,
+					&device_tech);
+
+			if ((connector ==
+				     IXGBE_SFF_QSFP_CONNECTOR_NOT_SEPARABLE) &&
+			    (cable_length > 0) &&
+			    ((device_tech >> 4) ==
+				     IXGBE_SFF_QSFP_TRANSMITER_850NM_VCSEL))
+				active_cable = true;
+		}
+
+		if (active_cable) {
+			hw->phy.type = ixgbe_phy_qsfp_active_unknown;
+			if (hw->bus.lan_id == 0)
+				hw->phy.sfp_type =
+						ixgbe_sfp_type_da_act_lmt_core0;
+			else
+				hw->phy.sfp_type =
+						ixgbe_sfp_type_da_act_lmt_core1;
+		} else {
+			/* unsupported module type */
+			hw->phy.type = ixgbe_phy_sfp_unsupported;
+			status = IXGBE_ERR_SFP_NOT_SUPPORTED;
+			goto out;
+		}
 	}
 
 	if (hw->phy.sfp_type != stored_sfp_type)
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.h b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.h
index 138dadd..24af12e 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.h
@@ -50,8 +50,11 @@
 #define IXGBE_SFF_QSFP_VENDOR_OUI_BYTE0	0xA5
 #define IXGBE_SFF_QSFP_VENDOR_OUI_BYTE1	0xA6
 #define IXGBE_SFF_QSFP_VENDOR_OUI_BYTE2	0xA7
+#define IXGBE_SFF_QSFP_CONNECTOR	0x82
 #define IXGBE_SFF_QSFP_10GBE_COMP	0x83
 #define IXGBE_SFF_QSFP_1GBE_COMP	0x86
+#define IXGBE_SFF_QSFP_CABLE_LENGTH	0x92
+#define IXGBE_SFF_QSFP_DEVICE_TECH	0x93
 
 /* Bitmasks */
 #define IXGBE_SFF_DA_PASSIVE_CABLE           0x4
@@ -68,6 +71,8 @@
 #define IXGBE_SFF_ADDRESSING_MODE	     0x4
 #define IXGBE_SFF_QSFP_DA_ACTIVE_CABLE       0x1
 #define IXGBE_SFF_QSFP_DA_PASSIVE_CABLE      0x8
+#define IXGBE_SFF_QSFP_CONNECTOR_NOT_SEPARABLE	0x23
+#define IXGBE_SFF_QSFP_TRANSMITER_850NM_VCSEL	0x0
 #define IXGBE_I2C_EEPROM_READ_MASK           0x100
 #define IXGBE_I2C_EEPROM_STATUS_MASK         0x3
 #define IXGBE_I2C_EEPROM_STATUS_NO_OPERATION 0x0
-- 
1.8.3.1

Re: [net-next 06/10] ixgbe: cleanup some log messages

[Joe Perches]

On Wed, 2013-08-28 at 03:33 -0700, Jeff Kirsher wrote:
> From: Don Skidmore <donald.c.skidmore@intel.com>

> Some minor log messages cleanup, changing the level one message is logged,
> adding a bit of detail to another and put all the text on one line.

Not a comment about this patch but:

> diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c
[]
> @@ -1282,7 +1282,7 @@ s32 ixgbe_identify_qsfp_module_generic(struct ixgbe_hw *hw)
>  				status = 0;
>  			} else {
>  				if (hw->allow_unsupported_sfp == true) {

At some point it might be nice to remove the
remaining bool direct comparisons to true/false

$ git grep -E -n "(==|!=)\s*(true|false)" drivers/net/ethernet/intel
drivers/net/ethernet/intel/e1000e/netdev.c:4871:			    (hw->mac.autoneg == true) &&
drivers/net/ethernet/intel/e1000e/phy.c:2651: *  Assumes semaphore is already acquired.  When page_set==true, assumes
drivers/net/ethernet/intel/ixgbe/ixgbe_82598.c:763:	if (hw->phy.reset_disable == false) {
drivers/net/ethernet/intel/ixgbe/ixgbe_82598.c:819:	if (hw->mac.orig_link_settings_stored == false) {
drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c:954:			    (hw->phy.smart_speed_active == false))
drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c:1099:	if (hw->phy.reset_disable == false && hw->phy.ops.reset != NULL)
drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c:1167:	if (hw->mac.orig_link_settings_stored == false) {
drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c:2371:	if (hw->phy.qsfp_shared_i2c_bus == true) {
drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c:2397:	if (hw->phy.qsfp_shared_i2c_bus == true) {
drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c:2424:	if (hw->phy.qsfp_shared_i2c_bus == true) {
drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c:2450:	if (hw->phy.qsfp_shared_i2c_bus == true) {
drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c:1273:				if (hw->allow_unsupported_sfp == true) {

RE: [net-next 06/10] ixgbe: cleanup some log messages

[Skidmore, Donald C]

> -----Original Message-----
> From: Joe Perches [mailto:joe@perches.com]
> Sent: Wednesday, August 28, 2013 7:49 AM
> To: Kirsher, Jeffrey T
> Cc: davem@davemloft.net; Skidmore, Donald C; netdev@vger.kernel.org;
> gospo@redhat.com; sassmann@redhat.com
> Subject: Re: [net-next 06/10] ixgbe: cleanup some log messages
> 
> On Wed, 2013-08-28 at 03:33 -0700, Jeff Kirsher wrote:
> > From: Don Skidmore <donald.c.skidmore@intel.com>
> 
> > Some minor log messages cleanup, changing the level one message is
> > logged, adding a bit of detail to another and put all the text on one line.
> 
> Not a comment about this patch but:
> 
> > diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c
> > b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c
> []
> > @@ -1282,7 +1282,7 @@ s32 ixgbe_identify_qsfp_module_generic(struct
> ixgbe_hw *hw)
> >  				status = 0;
> >  			} else {
> >  				if (hw->allow_unsupported_sfp == true) {
> 
> At some point it might be nice to remove the remaining bool direct
> comparisons to true/false
> 
> $ git grep -E -n "(==|!=)\s*(true|false)" drivers/net/ethernet/intel
> drivers/net/ethernet/intel/e1000e/netdev.c:4871:
> (hw->mac.autoneg == true) &&
> drivers/net/ethernet/intel/e1000e/phy.c:2651: *  Assumes semaphore is
> already acquired.  When page_set==true, assumes
> drivers/net/ethernet/intel/ixgbe/ixgbe_82598.c:763:	if (hw-
> >phy.reset_disable == false) {
> drivers/net/ethernet/intel/ixgbe/ixgbe_82598.c:819:	if (hw-
> >mac.orig_link_settings_stored == false) {
> drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c:954:
> (hw->phy.smart_speed_active == false))
> drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c:1099:	if (hw-
> >phy.reset_disable == false && hw->phy.ops.reset != NULL)
> drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c:1167:	if (hw-
> >mac.orig_link_settings_stored == false) {
> drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c:2371:	if (hw-
> >phy.qsfp_shared_i2c_bus == true) {
> drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c:2397:	if (hw-
> >phy.qsfp_shared_i2c_bus == true) {
> drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c:2424:	if (hw-
> >phy.qsfp_shared_i2c_bus == true) {
> drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c:2450:	if (hw-
> >phy.qsfp_shared_i2c_bus == true) {
> drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c:1273:
> 	if (hw->allow_unsupported_sfp == true) {
> 

Thanks for pointing this out Joe. 

 I'll work on a patch to do that for ixgbe and talk with the e1000e owner about doing it with their driver.

Re: [net-next 06/10] ixgbe: cleanup some log messages

[Joe Perches]

On Wed, 2013-08-28 at 16:19 +0000, Skidmore, Donald C wrote:
> > -----Original Message-----
> > From: Joe Perches [mailto:joe@perches.com]
[]
> > At some point it might be nice to remove the remaining bool direct
> > comparisons to true/false
> > 
> > $ git grep -E -n "(==|!=)\s*(true|false)" drivers/net/ethernet/intel
> > drivers/net/ethernet/intel/e1000e/netdev.c:4871:
> > (hw->mac.autoneg == true) &&
> > drivers/net/ethernet/intel/e1000e/phy.c:2651: *  Assumes semaphore is
> > already acquired.  When page_set==true, assumes
> > drivers/net/ethernet/intel/ixgbe/ixgbe_82598.c:763:	if (hw-
> > >phy.reset_disable == false) {
[etc...]
> Thanks for pointing this out Joe. 

Just a bit of code style ocd... ;)

>  I'll [] talk with the e1000e owner about doing it with their driver.

I believe the e1000e driver isn't using a bool
comparison as autoneg is a u8, but it could still use
	hw->mac.autoneg
for consistency with the other tests in the same driver.

Maybe:
---
 drivers/net/ethernet/intel/e1000e/netdev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index 2fead50..be9c033 100644
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -4869,7 +4869,7 @@ static void e1000_watchdog_task(struct work_struct *work)
 			 */
 			if ((hw->phy.type == e1000_phy_igp_3 ||
 			     hw->phy.type == e1000_phy_bm) &&
-			    (hw->mac.autoneg == true) &&
+			    hw->mac.autoneg &&
 			    (adapter->link_speed == SPEED_10 ||
 			     adapter->link_speed == SPEED_100) &&
 			    (adapter->link_duplex == HALF_DUPLEX)) {

Re: [net-next 04/10] ixgbe: fix link test when connected to 1Gbps link partner

[Sergei Shtylyov]

Hello.

On 08/28/2013 02:33 PM, Jeff Kirsher wrote:

> From: Emil Tantilov <emil.s.tantilov@intel.com>

> This patch is a partial reverse of:
> commit dfcc4615f09c33454bc553567f7c7506cae60cb9

    Please also specify that commit's summary line in parens.

> Specifically forcing the laser before the link check can lead to
> inconsistent results because it does not guarantee that the link will be
> negotiated correctly. Such is the case when dual speed SFP+ module is
> connected to a gigabit link partner.

> Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
> Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
> ---
>   drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c | 26 ++++++++----------------
>   1 file changed, 9 insertions(+), 17 deletions(-)

> diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
> index db0dbf6..57465d8 100644
> --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
> +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
> @@ -1885,11 +1885,11 @@ static void ixgbe_diag_test(struct net_device *netdev,
>                               struct ethtool_test *eth_test, u64 *data)
>   {
>   	struct ixgbe_adapter *adapter = netdev_priv(netdev);
> -	struct ixgbe_hw *hw = &adapter->hw;
>   	bool if_running = netif_running(netdev);
>
>   	set_bit(__IXGBE_TESTING, &adapter->state);
>   	if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
> +		struct ixgbe_hw *hw = &adapter->hw;

    Empty line wouldn't here, after declaration. At least in the code above 
you have it.

>   		if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
>   			int i;
>   			for (i = 0; i < adapter->num_vfs; i++) {

WBR, Sergei

RE: [net-next 04/10] ixgbe: fix link test when connected to 1Gbps link partner

[Tantilov, Emil S]

>-----Original Message-----
>From: Sergei Shtylyov
>[mailto:sergei.shtylyov@cogentembedded.com]
>Sent: Wednesday, August 28, 2013 11:28 AM
>To: Kirsher, Jeffrey T
>Cc: davem@davemloft.net; Tantilov, Emil S;
>netdev@vger.kernel.org; gospo@redhat.com;
>sassmann@redhat.com
>Subject: Re: [net-next 04/10] ixgbe: fix link test when
>connected to 1Gbps link partner
>
>Hello.
>
>On 08/28/2013 02:33 PM, Jeff Kirsher wrote:
>
>> From: Emil Tantilov <emil.s.tantilov@intel.com>
>
>> This patch is a partial reverse of:
>> commit dfcc4615f09c33454bc553567f7c7506cae60cb9
>
>    Please also specify that commit's summary line in
>parens.

commit dfcc4615f09c33454bc553567f7c7506cae60cb9
Author: Jacob Keller <jacob.e.keller@intel.com>
Date:   Thu Nov 8 07:07:08 2012 +0000

    ixgbe: ethtool ixgbe_diag_test cleanup

>
>> Specifically forcing the laser before the link check can
>lead to
>> inconsistent results because it does not guarantee that
>the link will be
>> negotiated correctly. Such is the case when dual speed
>SFP+ module is
>> connected to a gigabit link partner.
>
>> Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
>> Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
>> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
>> ---
>>   drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c | 26
>++++++++----------------
>>   1 file changed, 9 insertions(+), 17 deletions(-)
>
>> diff --git
>a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
>b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
>> index db0dbf6..57465d8 100644
>> --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
>> +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
>> @@ -1885,11 +1885,11 @@ static void ixgbe_diag_test(struct
>net_device *netdev,
>>                               struct ethtool_test
>*eth_test, u64 *data)
>>   {
>>   	struct ixgbe_adapter *adapter = netdev_priv(netdev);
>> -	struct ixgbe_hw *hw = &adapter->hw;
>>   	bool if_running = netif_running(netdev);
>>
>>   	set_bit(__IXGBE_TESTING, &adapter->state);
>>   	if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
>> +		struct ixgbe_hw *hw = &adapter->hw;
>
>    Empty line wouldn't here, after declaration. At least in
>the code above you have it.

It's probably a good idea to make it more readable. Assuming you meant adding an empty line after the declaration.

>
>>   		if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
>>   			int i;
>>   			for (i = 0; i < adapter->num_vfs; i++) {
>
>WBR, Sergei

If the lack of commit description and the empty line after the *hw declaration is too big of a concern I can resubmit the patch.

Thanks,
Emil

Re: [net-next 04/10] ixgbe: fix link test when connected to 1Gbps link partner

[Sergei Shtylyov]

On 08/29/2013 12:24 AM, Tantilov, Emil S wrote:

>>> From: Emil Tantilov <emil.s.tantilov@intel.com>

>>> This patch is a partial reverse of:
>>> commit dfcc4615f09c33454bc553567f7c7506cae60cb9

>>     Please also specify that commit's summary line in
>> parens.

> commit dfcc4615f09c33454bc553567f7c7506cae60cb9
> Author: Jacob Keller <jacob.e.keller@intel.com>
> Date:   Thu Nov 8 07:07:08 2012 +0000

>      ixgbe: ethtool ixgbe_diag_test cleanup

>>> Specifically forcing the laser before the link check can
>> lead to
>>> inconsistent results because it does not guarantee that
>> the link will be
>>> negotiated correctly. Such is the case when dual speed
>> SFP+ module is
>>> connected to a gigabit link partner.

>>> Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
>>> Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
>>> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
>>> ---
>>>    drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c | 26
>>> ++++++++----------------
>>>    1 file changed, 9 insertions(+), 17 deletions(-)

>>> diff --git
>>> a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
>>> b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
>>> index db0dbf6..57465d8 100644
>>> --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
>>> +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
>>> @@ -1885,11 +1885,11 @@ static void ixgbe_diag_test(struct
>> net_device *netdev,
>>>                                struct ethtool_test
>> *eth_test, u64 *data)
>>>    {
>>>    	struct ixgbe_adapter *adapter = netdev_priv(netdev);
>>> -	struct ixgbe_hw *hw = &adapter->hw;
>>>    	bool if_running = netif_running(netdev);
>>>
>>>    	set_bit(__IXGBE_TESTING, &adapter->state);
>>>    	if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
>>> +		struct ixgbe_hw *hw = &adapter->hw;
>>
>>     Empty line wouldn't here, after declaration. At least in

    Missed the verb "hurt" before "here".

>> the code above you have it.

> It's probably a good idea to make it more readable. Assuming you meant adding an empty line after the declaration.

    Yes.

>>
>>>    		if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
>>>    			int i;
>>>    			for (i = 0; i < adapter->num_vfs; i++) {
>>
>> WBR, Sergei

> If the lack of commit description and the empty line after the *hw declaration is too big of a concern I can resubmit the patch.

    The earlier is certainly a requirement (coming originally from Linus). 
It's the only way to uniquely identify the commit and it's the only way to 
easily know what the commit was about without a git tree or with 'cgit' 
currently used by http://git.kernel.org (it doesn't follow the commit SHA1 as 
the 'gitweb' used to do).

> Thanks,
> Emil

WBR, Sergei

Re: [net-next 07/10] ixgbe: fix SFF data dumps of SFP+ modules from an offset

[Ben Hutchings]

On Wed, 2013-08-28 at 03:33 -0700, Jeff Kirsher wrote:
> From: Emil Tantilov <emil.s.tantilov@intel.com>
> 
> This patch fixes the read loop for the I2C data to account for the offset.
> 
> Also includes a whitespace cleanup and removes ret_val as it is not needed.
> 
> CC: Ben Hutchings <bhutchings@solarflare.com>
> Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
> Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
> Reported-by: Ben Hutchings <bhutchings@solarflare.com>
> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
[...]

Reviewed-by: Ben Hutchings <bhutchings@solarflare.com>

Thanks.

Ben.

-- 
Ben Hutchings, Staff Engineer, Solarflare
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.