igb: force all queues to interrupt once every 2 seconds

Set the EICS bit for each of the RX queues at least once every 2 seconds to
prevent the rx queues from stalling.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
index 8f66e15ec8d6299ed3f95272ff7ec24acde43c60..465a810b670aa6c6f8f8ee07abca1f2d2ca32a1b 100644 (file)
--- a/drivers/net/igb/igb_main.c
+++ b/drivers/net/igb/igb_main.c
@@ -2290,7 +2290,9 @@ static void igb_watchdog_task(struct work_struct *work)
        struct igb_ring *tx_ring = adapter->tx_ring;
        struct e1000_mac_info *mac = &adapter->hw.mac;
        u32 link;
+       u32 eics = 0;
        s32 ret_val;
+       int i;
 
        if ((netif_carrier_ok(netdev)) &&
            (rd32(E1000_STATUS) & E1000_STATUS_LU))
@@ -2392,7 +2394,13 @@ link_up:
        }
 
        /* Cause software interrupt to ensure rx ring is cleaned */
-       wr32(E1000_ICS, E1000_ICS_RXDMT0);
+       if (adapter->msix_entries) {
+               for (i = 0; i < adapter->num_rx_queues; i++)
+                       eics |= adapter->rx_ring[i].eims_value;
+               wr32(E1000_EICS, eics);
+       } else {
+               wr32(E1000_ICS, E1000_ICS_RXDMT0);
+       }
 
        /* Force detection of hung controller every watchdog period */
        tx_ring->detect_tx_hung = true;