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Commit 7a6ea550 authored by Alexander Duyck's avatar Alexander Duyck Committed by Jeff Garzik
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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: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: default avatarAlexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
parent a866bbf6

drivers/net/igb/igb_main.c

+9 −1
Original line number Diff line number Diff line
@@ -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 */

	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;