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[5/7] ibmvnic: Start completion queue negotiation at server-provided optimum values

Message ID 1484919369-2201-6-git-send-email-tim.gardner@canonical.com
State New
Headers show

Commit Message

Tim Gardner Jan. 20, 2017, 1:36 p.m. UTC 
From: John Allen <jallen@linux.vnet.ibm.com>

BugLink: http://bugs.launchpad.net/bugs/1655379

Use the opt_* fields to determine the starting point for negotiating the
number of tx/rx completion queues with the vnic server. These contain the
number of queues that the vnic server estimates that it will be able to
allocate. While renegotiation may still occur, using the opt_* fields will
reduce the number of times this needs to happen and will prevent driver
probe timeout on systems using large numbers of ibmvnic client devices per
vnic port.

Signed-off-by: John Allen <jallen@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 6dbcd8fb5968fda3a5fba019dfb0c80c3139627b)
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
---
 drivers/net/ethernet/ibm/ibmvnic.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)
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Patch

diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index 142f9a5..829d630 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -1505,9 +1505,8 @@  static void init_sub_crqs(struct ibmvnic_adapter *adapter, int retry)
 		    adapter->max_rx_add_entries_per_subcrq > entries_page ?
 		    entries_page : adapter->max_rx_add_entries_per_subcrq;
 
-		/* Choosing the maximum number of queues supported by firmware*/
-		adapter->req_tx_queues = adapter->max_tx_queues;
-		adapter->req_rx_queues = adapter->max_rx_queues;
+		adapter->req_tx_queues = adapter->opt_tx_comp_sub_queues;
+		adapter->req_rx_queues = adapter->opt_rx_comp_queues;
 		adapter->req_rx_add_queues = adapter->max_rx_add_queues;
 
 		adapter->req_mtu = adapter->max_mtu;