netdev - [PATCH iwl-next v1 10/15] ice: allow changing SWITCHDEV

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Message-ID: <20231024110929.19423-11-michal.swiatkowski@linux.intel.com>
Date: Tue, 24 Oct 2023 13:09:24 +0200
From: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
To: intel-wired-lan@...ts.osuosl.org
Cc: netdev@...r.kernel.org,
	piotr.raczynski@...el.com,
	wojciech.drewek@...el.com,
	marcin.szycik@...el.com,
	jacob.e.keller@...el.com,
	przemyslaw.kitszel@...el.com,
	jesse.brandeburg@...el.com,
	Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
Subject: [PATCH iwl-next v1 10/15] ice: allow changing SWITCHDEV_CTRL VSI queues

Implement mechanism to change number of queues for SWITCHDEV_CTRL VSI
type.

Value from ::req_txq/rxq will be written to ::alloc_txq/rxq after
calling ice_vsi_rebuild().

Reviewed-by: Piotr Raczynski <piotr.raczynski@...el.com>
Reviewed-by: Wojciech Drewek <wojciech.drewek@...el.com>
Reviewed-by: Jacob Keller <jacob.e.keller@...el.com>
Signed-off-by: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
---
 drivers/net/ethernet/intel/ice/ice_lib.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_lib.c b/drivers/net/ethernet/intel/ice/ice_lib.c
index ae4b4220e1bb..85a8cb28a489 100644
--- a/drivers/net/ethernet/intel/ice/ice_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_lib.c
@@ -212,11 +212,18 @@ static void ice_vsi_set_num_qs(struct ice_vsi *vsi)
 						 vsi->alloc_txq));
 		break;
 	case ICE_VSI_SWITCHDEV_CTRL:
-		/* The number of queues for ctrl VSI is equal to number of VFs.
+		/* The number of queues for ctrl VSI is equal to number of PRs
 		 * Each ring is associated to the corresponding VF_PR netdev.
+		 * Tx and Rx rings are always equal
 		 */
-		vsi->alloc_txq = ice_get_num_vfs(pf);
-		vsi->alloc_rxq = vsi->alloc_txq;
+		if (vsi->req_txq && vsi->req_rxq) {
+			vsi->alloc_txq = vsi->req_txq;
+			vsi->alloc_rxq = vsi->req_rxq;
+		} else {
+			vsi->alloc_txq = 1;
+			vsi->alloc_rxq = 1;
+		}
+
 		vsi->num_q_vectors = 1;
 		break;
 	case ICE_VSI_VF:
-- 
2.41.0