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

Pull networking updates and fixes from David Miller:

1) Reinstate the no-ref optimization for input route lookups in ipv4 to
   fix some routing cache removal perf regressions.

2) Make TCP socket pre-demux work on ipv6 side too, from Eric Dumazet.

3) Get RX hash value from correct place in be2net driver, from
   Sarveshwar Bandi.

4) Validation of FIB cached routes missing critical check, from Eric
   Dumazet.

5) EEH support in mlx4 driver, from Kleber Sacilotto de Souza.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (23 commits)
  ipv6: Early TCP socket demux
  ipv4: Fix input route performance regression.
  pch_gbe: vlan skb len fix
  pch_gbe: add extra clean tx
  pch_gbe: fix transmit watchdog timeout
  ixgbe: fix panic while dumping packets on Tx hang with IOMMU
  be2net: Fix to parse RSS hash from Receive completions correctly.
  net/mlx4_en: Limit the RFS filter IDs to be < RPS_NO_FILTER
  hyperv: Add error handling to rndis_filter_device_add()
  hyperv: Add a check for ring_size value
  ipv4: rt_cache_valid must check expired routes
  net/pch_gpe: Cannot disable ethernet autonegation
  qeth: repair crash in qeth_l3_vlan_rx_kill_vid()
  netiucv: cleanup attribute usage
  net: wiznet add missing HAS_IOMEM dependency
  be2net: Missing byteswap in be_get_fw_log_level causes oops on PowerPC
  mlx4: Add support for EEH error recovery
  cdc-ncm: tag Ericsson WWAN devices (eg F5521gw) with FLAG_WWAN
  wanmain: comparing array with NULL
  caif: fix NULL pointer check
  ...

1 files changed, 29 insertions, 1 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index e8f8ebb4ae6..48d0e90194c 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -1817,6 +1817,9 @@ static int mlx4_get_ownership(struct mlx4_dev *dev)
 	void __iomem *owner;
 	u32 ret;
 
+	if (pci_channel_offline(dev->pdev))
+		return -EIO;
+
 	owner = ioremap(pci_resource_start(dev->pdev, 0) + MLX4_OWNER_BASE,
 			MLX4_OWNER_SIZE);
 	if (!owner) {
@@ -1833,6 +1836,9 @@ static void mlx4_free_ownership(struct mlx4_dev *dev)
 {
 	void __iomem *owner;
 
+	if (pci_channel_offline(dev->pdev))
+		return;
+
 	owner = ioremap(pci_resource_start(dev->pdev, 0) + MLX4_OWNER_BASE,
 			MLX4_OWNER_SIZE);
 	if (!owner) {
@@ -2279,11 +2285,33 @@ static DEFINE_PCI_DEVICE_TABLE(mlx4_pci_table) = {
 
 MODULE_DEVICE_TABLE(pci, mlx4_pci_table);
 
+static pci_ers_result_t mlx4_pci_err_detected(struct pci_dev *pdev,
+					      pci_channel_state_t state)
+{
+	mlx4_remove_one(pdev);
+
+	return state == pci_channel_io_perm_failure ?
+		PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_NEED_RESET;
+}
+
+static pci_ers_result_t mlx4_pci_slot_reset(struct pci_dev *pdev)
+{
+	int ret = __mlx4_init_one(pdev, NULL);
+
+	return ret ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
+}
+
+static struct pci_error_handlers mlx4_err_handler = {
+	.error_detected = mlx4_pci_err_detected,
+	.slot_reset     = mlx4_pci_slot_reset,
+};
+
 static struct pci_driver mlx4_driver = {
 	.name		= DRV_NAME,
 	.id_table	= mlx4_pci_table,
 	.probe		= mlx4_init_one,
-	.remove		= __devexit_p(mlx4_remove_one)
+	.remove		= __devexit_p(mlx4_remove_one),
+	.err_handler    = &mlx4_err_handler,
 };
 
 static int __init mlx4_verify_params(void)