From: Alexander Duyck <alexander.h.duyck@intel.com>
Date: Wed, 22 Nov 2017 10:57:35 -0800
Subject: ixgbe: Fix handling of macvlan Tx offload
Patch-mainline: v4.16-rc1
Git-commit: 49cfbeb7a95c0436dfc127e2c37d71ed238532f8
References: bsc#1101674 FATE#325150 FATE#325151

This update makes it so that we report the actual number of Tx queues via
real_num_tx_queues but are still restricted to RSS on only the first pool
by setting num_tc equal to 1. Doing this locks us into only having the
ability to setup XPS on the queues in that pool, and only those queues
should be used for transmitting anything other than macvlan traffic.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c  |    4 ++++
 drivers/net/ethernet/intel/ixgbe/ixgbe_main.c |   20 ++++++++++----------
 2 files changed, 14 insertions(+), 10 deletions(-)

--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c
@@ -619,6 +619,10 @@ static bool ixgbe_set_sriov_queues(struc
 	}
 
 #endif
+	/* populate TC0 for use by pool 0 */
+	netdev_set_tc_queue(adapter->netdev, 0,
+			    adapter->num_rx_queues_per_pool, 0);
+
 	return true;
 }
 
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -6528,20 +6528,12 @@ int ixgbe_open(struct net_device *netdev
 		goto err_req_irq;
 
 	/* Notify the stack of the actual queue counts. */
-	if (adapter->num_rx_pools > 1)
-		queues = adapter->num_rx_queues_per_pool;
-	else
-		queues = adapter->num_tx_queues;
-
+	queues = adapter->num_tx_queues;
 	err = netif_set_real_num_tx_queues(netdev, queues);
 	if (err)
 		goto err_set_queues;
 
-	if (adapter->num_rx_pools > 1 &&
-	    adapter->num_rx_queues > IXGBE_MAX_L2A_QUEUES)
-		queues = IXGBE_MAX_L2A_QUEUES;
-	else
-		queues = adapter->num_rx_queues;
+	queues = adapter->num_rx_queues;
 	err = netif_set_real_num_rx_queues(netdev, queues);
 	if (err)
 		goto err_set_queues;
@@ -8771,6 +8763,14 @@ int ixgbe_setup_tc(struct net_device *de
 	} else {
 		netdev_reset_tc(dev);
 
+		/* To support macvlan offload we have to use num_tc to
+		 * restrict the queues that can be used by the device.
+		 * By doing this we can avoid reporting a false number of
+		 * queues.
+		 */
+		if (!tc && adapter->num_rx_pools > 1)
+			netdev_set_num_tc(dev, 1);
+
 		if (adapter->hw.mac.type == ixgbe_mac_82598EB)
 			adapter->hw.fc.requested_mode = adapter->last_lfc_mode;