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

Jeff Kirsher says:

====================
Intel Wired LAN Driver Updates

This series contains updates to e1000, igb and ixgbe.

Emil provides his version 2 fix for the detection of SFP+ capable interfaces.
In cases where the driver is loaded while there are no SFP+ modules in cage,
the interface was not being detected as SFP capable.  Resolve the issue by
identifying interfaces with no PHY type set as SFP capable which allows the
driver to detect the SFP module when the interface is brought up.  In this
version 2 of the patch, the 82599 specific check was removed since we only
have 82598 devices that are SFP capable.

Jacob removes the including of the export header in the ixgbe PTP core, since
it is not needed.  Renames igb_ptp_enable() to igb_ptp_feature_enable() to
better reflect the actual functions purpose.

Todd fixes the ethtool loopback test for i354 backplane devices since we
do not know what PHY is to be used for the devices, use MAC loopback for
ethtool tests.  Todd also sets the packet buffer size register defaults for
i210 devices.

Yongjian Xu removes the check for skb->len being negative or zero since there
is never a case where it would be zero or negative for e1000.

Manuel Schölling updates e1000 to use the time_after() helper function.

v2: Fix indentation on wrapped line in patch 3 of the series based on
    feedback from David Miller
====================

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

drivers/net/ethernet/intel/e1000/e1000_ethtool.c

@@ -1460,7 +1460,8 @@ static int e1000_run_loopback_test(struct e1000_adapter *adapter)
 			 * enough time to complete the receives, if it's
 			 * exceeded, break and error off
 			 */
-		} while (good_cnt < 64 && jiffies < (time + 20));
+		} while (good_cnt < 64 && time_after(time + 20, jiffies));
+
 		if (good_cnt != 64) {
 			ret_val = 13; /* ret_val is the same as mis-compare */
 			break;

drivers/net/ethernet/intel/e1000/e1000_main.c

@@ -3105,11 +3105,6 @@ static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
 	 */
 	tx_ring = adapter->tx_ring;
 
-	if (unlikely(skb->len <= 0)) {
-		dev_kfree_skb_any(skb);
-		return NETDEV_TX_OK;
-	}
-
 	/* On PCI/PCI-X HW, if packet size is less than ETH_ZLEN,
 	 * packets may get corrupted during padding by HW.
 	 * To WA this issue, pad all small packets manually.

drivers/net/ethernet/intel/igb/e1000_defines.h

@@ -329,6 +329,9 @@
 /* Timestamp in Rx buffer */
 #define E1000_RXPBS_CFG_TS_EN           0x80000000
 
+#define I210_RXPBSIZE_DEFAULT		0x000000A2 /* RXPBSIZE default */
+#define I210_TXPBSIZE_DEFAULT		0x04000014 /* TXPBSIZE default */
+
 /* SerDes Control */
 #define E1000_SCTL_DISABLE_SERDES_LOOPBACK 0x0400
 

drivers/net/ethernet/intel/igb/e1000_regs.h

@@ -192,6 +192,10 @@
 				    : (0x0E038 + ((_n) * 0x40)))
 #define E1000_TDWBAH(_n)  ((_n) < 4 ? (0x0383C + ((_n) * 0x100)) \
 				    : (0x0E03C + ((_n) * 0x40)))
+
+#define E1000_RXPBS	0x02404  /* Rx Packet Buffer Size - RW */
+#define E1000_TXPBS	0x03404  /* Tx Packet Buffer Size - RW */
+
 #define E1000_TDFH     0x03410  /* TX Data FIFO Head - RW */
 #define E1000_TDFT     0x03418  /* TX Data FIFO Tail - RW */
 #define E1000_TDFHS    0x03420  /* TX Data FIFO Head Saved - RW */

drivers/net/ethernet/intel/igb/igb_ethtool.c

@@ -1665,8 +1665,8 @@ static int igb_setup_loopback_test(struct igb_adapter *adapter)
 		(hw->device_id == E1000_DEV_ID_DH89XXCC_SERDES) ||
 		(hw->device_id == E1000_DEV_ID_DH89XXCC_BACKPLANE) ||
 		(hw->device_id == E1000_DEV_ID_DH89XXCC_SFP) ||
-		(hw->device_id == E1000_DEV_ID_I354_SGMII)) {
-
+		(hw->device_id == E1000_DEV_ID_I354_SGMII) ||
+		(hw->device_id == E1000_DEV_ID_I354_BACKPLANE_2_5GBPS)) {
 			/* Enable DH89xxCC MPHY for near end loopback */
 			reg = rd32(E1000_MPHY_ADDR_CTL);
 			reg = (reg & E1000_MPHY_ADDR_CTL_OFFSET_MASK) |

drivers/net/ethernet/intel/igb/igb_main.c

@@ -2433,6 +2433,12 @@ static int igb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	/* get firmware version for ethtool -i */
 	igb_set_fw_version(adapter);
 
+	/* configure RXPBSIZE and TXPBSIZE */
+	if (hw->mac.type == e1000_i210) {
+		wr32(E1000_RXPBS, I210_RXPBSIZE_DEFAULT);
+		wr32(E1000_TXPBS, I210_TXPBSIZE_DEFAULT);
+	}
+
 	setup_timer(&adapter->watchdog_timer, igb_watchdog,
 		    (unsigned long) adapter);
 	setup_timer(&adapter->phy_info_timer, igb_update_phy_info,

drivers/net/ethernet/intel/igb/igb_ptp.c

@@ -360,8 +360,8 @@ static int igb_ptp_settime_i210(struct ptp_clock_info *ptp,
 	return 0;
 }
 
-static int igb_ptp_enable(struct ptp_clock_info *ptp,
-			  struct ptp_clock_request *rq, int on)
+static int igb_ptp_feature_enable(struct ptp_clock_info *ptp,
+				  struct ptp_clock_request *rq, int on)
 {
 	return -EOPNOTSUPP;
 }
@@ -745,7 +745,7 @@ void igb_ptp_init(struct igb_adapter *adapter)
 		adapter->ptp_caps.adjtime = igb_ptp_adjtime_82576;
 		adapter->ptp_caps.gettime = igb_ptp_gettime_82576;
 		adapter->ptp_caps.settime = igb_ptp_settime_82576;
-		adapter->ptp_caps.enable = igb_ptp_enable;
+		adapter->ptp_caps.enable = igb_ptp_feature_enable;
 		adapter->cc.read = igb_ptp_read_82576;
 		adapter->cc.mask = CLOCKSOURCE_MASK(64);
 		adapter->cc.mult = 1;
@@ -765,7 +765,7 @@ void igb_ptp_init(struct igb_adapter *adapter)
 		adapter->ptp_caps.adjtime = igb_ptp_adjtime_82576;
 		adapter->ptp_caps.gettime = igb_ptp_gettime_82576;
 		adapter->ptp_caps.settime = igb_ptp_settime_82576;
-		adapter->ptp_caps.enable = igb_ptp_enable;
+		adapter->ptp_caps.enable = igb_ptp_feature_enable;
 		adapter->cc.read = igb_ptp_read_82580;
 		adapter->cc.mask = CLOCKSOURCE_MASK(IGB_NBITS_82580);
 		adapter->cc.mult = 1;
@@ -784,7 +784,7 @@ void igb_ptp_init(struct igb_adapter *adapter)
 		adapter->ptp_caps.adjtime = igb_ptp_adjtime_i210;
 		adapter->ptp_caps.gettime = igb_ptp_gettime_i210;
 		adapter->ptp_caps.settime = igb_ptp_settime_i210;
-		adapter->ptp_caps.enable = igb_ptp_enable;
+		adapter->ptp_caps.enable = igb_ptp_feature_enable;
 		/* Enable the timer functions by clearing bit 31. */
 		wr32(E1000_TSAUXC, 0x0);
 		break;

drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c

@@ -161,13 +161,6 @@ static int ixgbe_get_settings(struct net_device *netdev,
 	bool autoneg = false;
 	bool link_up;
 
-	/* SFP type is needed for get_link_capabilities */
-	if (hw->phy.media_type & (ixgbe_media_type_fiber |
-				  ixgbe_media_type_fiber_qsfp)) {
-		if (hw->phy.sfp_type == ixgbe_sfp_type_not_present)
-				hw->phy.ops.identify_sfp(hw);
-	}
-
 	hw->mac.ops.get_link_capabilities(hw, &supported_link, &autoneg);
 
 	/* set the supported link speeds */

drivers/net/ethernet/intel/ixgbe/ixgbe_main.c

@@ -4656,6 +4656,8 @@ static inline bool ixgbe_is_sfp(struct ixgbe_hw *hw)
 	case ixgbe_phy_qsfp_active_unknown:
 	case ixgbe_phy_qsfp_intel:
 	case ixgbe_phy_qsfp_unknown:
+	/* ixgbe_phy_none is set when no SFP module is present */
+	case ixgbe_phy_none:
 		return true;
 	case ixgbe_phy_nl:
 		if (hw->mac.type == ixgbe_mac_82598EB)

drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c

@@ -26,7 +26,6 @@
 
 *******************************************************************************/
 #include "ixgbe.h"
-#include <linux/export.h>
 #include <linux/ptp_classify.h>
 
 /*