Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-next

Jeff Kirsher says:

====================
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.

v2: Fixed patch 4 description and added blank line based on feedback from
    Sergei Shtylyov
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 45 insertions, 22 deletions

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
index 50e62a2b1a65..b5c434b617b1 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) >>