From b0483c8f363c7ab1e8c19ac4578bec91c8e5aea2 Mon Sep 17 00:00:00 2001 From: Mark Rustad Date: Tue, 14 Jan 2014 18:53:17 -0800 Subject: [PATCH] ixgbe: Additional adapter removal checks Additional checks are needed for a detected removal not to cause problems. Some involve simply avoiding a lot of stuff that can't do anything good, and also cases where the phony return value can cause problems. In addition, down the adapter when the removal is sensed. Signed-off-by: Mark Rustad Tested-by: Phil Schmitt Signed-off-by: Aaron Brown Signed-off-by: David S. Miller --- .../net/ethernet/intel/ixgbe/ixgbe_ethtool.c | 22 +++++++++++++++++++ drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 16 ++++++++++++++ 2 files changed, 38 insertions(+) diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c index c4b2eb1a8fa2..043307024c4a 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c @@ -1342,6 +1342,10 @@ static bool reg_pattern_test(struct ixgbe_adapter *adapter, u64 *data, int reg, static const u32 test_pattern[] = { 0x5A5A5A5A, 0xA5A5A5A5, 0x00000000, 0xFFFFFFFF}; + if (ixgbe_removed(adapter->hw.hw_addr)) { + *data = 1; + return 1; + } for (pat = 0; pat < ARRAY_SIZE(test_pattern); pat++) { before = ixgbe_read_reg(&adapter->hw, reg); ixgbe_write_reg(&adapter->hw, reg, test_pattern[pat] & write); @@ -1364,6 +1368,10 @@ static bool reg_set_and_check(struct ixgbe_adapter *adapter, u64 *data, int reg, { u32 val, before; + if (ixgbe_removed(adapter->hw.hw_addr)) { + *data = 1; + return 1; + } before = ixgbe_read_reg(&adapter->hw, reg); ixgbe_write_reg(&adapter->hw, reg, write & mask); val = ixgbe_read_reg(&adapter->hw, reg); @@ -1384,6 +1392,11 @@ static int ixgbe_reg_test(struct ixgbe_adapter *adapter, u64 *data) u32 value, before, after; u32 i, toggle; + if (ixgbe_removed(adapter->hw.hw_addr)) { + e_err(drv, "Adapter removed - register test blocked\n"); + *data = 1; + return 1; + } switch (adapter->hw.mac.type) { case ixgbe_mac_82598EB: toggle = 0x7FFFF3FF; @@ -1950,6 +1963,15 @@ static void ixgbe_diag_test(struct net_device *netdev, struct ixgbe_adapter *adapter = netdev_priv(netdev); bool if_running = netif_running(netdev); + if (ixgbe_removed(adapter->hw.hw_addr)) { + e_err(hw, "Adapter removed - test blocked\n"); + data[0] = 1; + data[1] = 1; + data[2] = 1; + data[3] = 1; + eth_test->flags |= ETH_TEST_FL_FAILED; + return; + } set_bit(__IXGBE_TESTING, &adapter->state); if (eth_test->flags == ETH_TEST_FL_OFFLINE) { struct ixgbe_hw *hw = &adapter->hw; diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index 9831a244d5ba..3ca59d21d0b2 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -291,6 +291,7 @@ static void ixgbe_remove_adapter(struct ixgbe_hw *hw) return; hw->hw_addr = NULL; e_dev_err("Adapter removed\n"); + ixgbe_service_event_schedule(adapter); } void ixgbe_check_remove(struct ixgbe_hw *hw, u32 reg) @@ -3338,6 +3339,8 @@ static void ixgbe_rx_desc_queue_enable(struct ixgbe_adapter *adapter, u32 rxdctl; u8 reg_idx = ring->reg_idx; + if (ixgbe_removed(hw->hw_addr)) + return; /* RXDCTL.EN will return 0 on 82598 if link is down, so skip it */ if (hw->mac.type == ixgbe_mac_82598EB && !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP)) @@ -3362,6 +3365,8 @@ void ixgbe_disable_rx_queue(struct ixgbe_adapter *adapter, u32 rxdctl; u8 reg_idx = ring->reg_idx; + if (ixgbe_removed(hw->hw_addr)) + return; rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); rxdctl &= ~IXGBE_RXDCTL_ENABLE; @@ -4687,6 +4692,8 @@ void ixgbe_reset(struct ixgbe_adapter *adapter) struct ixgbe_hw *hw = &adapter->hw; int err; + if (ixgbe_removed(hw->hw_addr)) + return; /* lock SFP init bit to prevent race conditions with the watchdog */ while (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state)) usleep_range(1000, 2000); @@ -6397,6 +6404,15 @@ static void ixgbe_service_task(struct work_struct *work) struct ixgbe_adapter *adapter = container_of(work, struct ixgbe_adapter, service_task); + if (ixgbe_removed(adapter->hw.hw_addr)) { + if (!test_bit(__IXGBE_DOWN, &adapter->state)) { + rtnl_lock(); + ixgbe_down(adapter); + rtnl_unlock(); + } + ixgbe_service_event_complete(adapter); + return; + } ixgbe_reset_subtask(adapter); ixgbe_sfp_detection_subtask(adapter); ixgbe_sfp_link_config_subtask(adapter); -- 2.30.2