diff options
Diffstat (limited to 'drivers/net/ethernet/intel/igb/igb_main.c')
| -rw-r--r-- | drivers/net/ethernet/intel/igb/igb_main.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index 4d2dc17fd31b..bd8de67c17a9 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -4167,6 +4167,26 @@ static bool igb_thermal_sensor_event(struct e1000_hw *hw, u32 event) } /** + * igb_check_lvmmc - check for malformed packets received + * and indicated in LVMMC register + * @adapter: pointer to adapter + **/ +static void igb_check_lvmmc(struct igb_adapter *adapter) +{ + struct e1000_hw *hw = &adapter->hw; + u32 lvmmc; + + lvmmc = rd32(E1000_LVMMC); + if (lvmmc) { + if (unlikely(net_ratelimit())) { + netdev_warn(adapter->netdev, + "malformed Tx packet detected and dropped, LVMMC:0x%08x\n", + lvmmc); + } + } +} + +/** * igb_watchdog - Timer Call-back * @data: pointer to adapter cast into an unsigned long **/ @@ -4361,6 +4381,11 @@ static void igb_watchdog_task(struct work_struct *work) igb_spoof_check(adapter); igb_ptp_rx_hang(adapter); + /* Check LVMMC register on i350/i354 only */ + if ((adapter->hw.mac.type == e1000_i350) || + (adapter->hw.mac.type == e1000_i354)) + igb_check_lvmmc(adapter); + /* Reset the timer */ if (!test_bit(__IGB_DOWN, &adapter->state)) { if (adapter->flags & IGB_FLAG_NEED_LINK_UPDATE) |