[PATCH net 1/6] ice: set max queues in alloc_etherdev_mqs()

[Tony Nguyen <anthony.l.nguyen@intel.com>]

From: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>

When allocating netdevice using alloc_etherdev_mqs() the maximum
supported queues number should be passed. The vsi->alloc_txq/rxq is
storing current number of queues, not the maximum ones.

Use the same function for getting max Tx and Rx queues which is used
during ethtool -l call to set maximum number of queues during netdev
allocation.

Reproduction steps:
$ethtool -l $pf # says current 16, max 64
$ethtool -S $pf # fine
$ethtool -L $pf combined 40 # crash

[491187.472594] Call Trace:
[491187.472829]  <TASK>
[491187.473067]  netif_set_xps_queue+0x26/0x40
[491187.473305]  ice_vsi_cfg_txq+0x265/0x3d0 [ice]
[491187.473619]  ice_vsi_cfg_lan_txqs+0x68/0xa0 [ice]
[491187.473918]  ice_vsi_cfg_lan+0x2b/0xa0 [ice]
[491187.474202]  ice_vsi_open+0x71/0x170 [ice]
[491187.474484]  ice_vsi_recfg_qs+0x17f/0x230 [ice]
[491187.474759]  ? dev_get_min_mp_channel_count+0xab/0xd0
[491187.474987]  ice_set_channels+0x185/0x3d0 [ice]
[491187.475278]  ethnl_set_channels+0x26f/0x340

Fixes: ee13aa1a2c5a ("ice: use netif_get_num_default_rss_queues()")
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Paul Menzel <pmenzel@molgen.mpg.de>
Tested-by: Alexander Nowlin <alexander.nowlin@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
---
 drivers/net/ethernet/intel/ice/ice.h         | 22 ++++++++++++++++++++
 drivers/net/ethernet/intel/ice/ice_ethtool.c | 18 ----------------
 drivers/net/ethernet/intel/ice/ice_main.c    |  4 ++--
 3 files changed, 24 insertions(+), 20 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice.h b/drivers/net/ethernet/intel/ice/ice.h
index 2b2b22af42be..eb3a48330cc1 100644
--- a/drivers/net/ethernet/intel/ice/ice.h
+++ b/drivers/net/ethernet/intel/ice/ice.h
@@ -839,6 +839,28 @@ static inline void ice_tx_xsk_pool(struct ice_vsi *vsi, u16 qid)
 	WRITE_ONCE(ring->xsk_pool, ice_get_xp_from_qid(vsi, qid));
 }
 
+/**
+ * ice_get_max_txq - return the maximum number of Tx queues for in a PF
+ * @pf: PF structure
+ *
+ * Return: maximum number of Tx queues
+ */
+static inline int ice_get_max_txq(struct ice_pf *pf)
+{
+	return min(num_online_cpus(), pf->hw.func_caps.common_cap.num_txq);
+}
+
+/**
+ * ice_get_max_rxq - return the maximum number of Rx queues for in a PF
+ * @pf: PF structure
+ *
+ * Return: maximum number of Rx queues
+ */
+static inline int ice_get_max_rxq(struct ice_pf *pf)
+{
+	return min(num_online_cpus(), pf->hw.func_caps.common_cap.num_rxq);
+}
+
 /**
  * ice_get_main_vsi - Get the PF VSI
  * @pf: PF instance
diff --git a/drivers/net/ethernet/intel/ice/ice_ethtool.c b/drivers/net/ethernet/intel/ice/ice_ethtool.c
index 301947d53ede..e4e1eab05bd5 100644
--- a/drivers/net/ethernet/intel/ice/ice_ethtool.c
+++ b/drivers/net/ethernet/intel/ice/ice_ethtool.c
@@ -3773,24 +3773,6 @@ ice_get_ts_info(struct net_device *dev, struct kernel_ethtool_ts_info *info)
 	return 0;
 }
 
-/**
- * ice_get_max_txq - return the maximum number of Tx queues for in a PF
- * @pf: PF structure
- */
-static int ice_get_max_txq(struct ice_pf *pf)
-{
-	return min(num_online_cpus(), pf->hw.func_caps.common_cap.num_txq);
-}
-
-/**
- * ice_get_max_rxq - return the maximum number of Rx queues for in a PF
- * @pf: PF structure
- */
-static int ice_get_max_rxq(struct ice_pf *pf)
-{
-	return min(num_online_cpus(), pf->hw.func_caps.common_cap.num_rxq);
-}
-
 /**
  * ice_get_combined_cnt - return the current number of combined channels
  * @vsi: PF VSI pointer
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index e7308e381e2f..3c36e3641b9e 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -4699,8 +4699,8 @@ static int ice_cfg_netdev(struct ice_vsi *vsi)
 	struct net_device *netdev;
 	u8 mac_addr[ETH_ALEN];
 
-	netdev = alloc_etherdev_mqs(sizeof(*np), vsi->alloc_txq,
-				    vsi->alloc_rxq);
+	netdev = alloc_etherdev_mqs(sizeof(*np), ice_get_max_txq(vsi->back),
+				    ice_get_max_rxq(vsi->back));
 	if (!netdev)
 		return -ENOMEM;
 
-- 
2.47.1