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Commit f185a49a authored by Thomas Falcon's avatar Thomas Falcon Committed by David S. Miller
Browse files

ibmvnic: Deactivate RX pool buffer replenishment on H_CLOSED 



If H_CLOSED is returned, halt RX buffer replenishment activity
until firmware sends a notification that the driver can reset.

Signed-off-by: default avatarThomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b8c80b84

drivers/net/ethernet/ibm/ibmvnic.c

+21 −0
Original line number Diff line number Diff line
@@ -200,6 +200,15 @@ static void free_long_term_buff(struct ibmvnic_adapter *adapter, 
	dma_free_coherent(dev, ltb->size, ltb->buff, ltb->addr);

}



static void deactivate_rx_pools(struct ibmvnic_adapter *adapter)

{

	int i;



	for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);

	     i++)

		adapter->rx_pool[i].active = 0;

}



static void replenish_rx_pool(struct ibmvnic_adapter *adapter,

			      struct ibmvnic_rx_pool *pool)

{
@@ -217,6 +226,9 @@ static void replenish_rx_pool(struct ibmvnic_adapter *adapter, 
	int index;

	int i;



	if (!pool->active)

		return;



	handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) +

				      be32_to_cpu(adapter->login_rsp_buf->

				      off_rxadd_subcrqs));
@@ -287,6 +299,15 @@ static void replenish_rx_pool(struct ibmvnic_adapter *adapter, 
	dev_kfree_skb_any(skb);

	adapter->replenish_add_buff_failure++;

	atomic_add(buffers_added, &pool->available);



	if (lpar_rc == H_CLOSED) {

		/* Disable buffer pool replenishment and report carrier off if

		 * queue is closed. Firmware guarantees that a signal will

		 * be sent to the driver, triggering a reset.

		 */

		deactivate_rx_pools(adapter);

		netif_carrier_off(adapter->netdev);

	}

}



static void replenish_pools(struct ibmvnic_adapter *adapter)