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>

1 files changed, 9 insertions, 1 deletions

diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
index 8f66e15ec8d6..465a810b670a 100644
--- 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;