linux-kernel - [PATCH 5.10 085/132] i40e: Fix pre-set max number of queues for VF

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Date:   Mon, 13 Dec 2021 10:30:26 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Grzegorz Szczurek <grzegorzx.szczurek@...el.com>,
        Mateusz Palczewski <mateusz.palczewski@...el.com>,
        Bindushree P <Bindushree.p@...el.com>,
        Tony Nguyen <anthony.l.nguyen@...el.com>
Subject: [PATCH 5.10 085/132] i40e: Fix pre-set max number of queues for VF

From: Mateusz Palczewski <mateusz.palczewski@...el.com>

commit 8aa55ab422d9d0d825ebfb877702ed661e96e682 upstream.

After setting pre-set combined to 16 queues and reserving 16 queues by
tc qdisc, pre-set maximum combined queues returned to default value
after VF reset being 4 and this generated errors during removing tc.
Fixed by removing clear num_req_queues before reset VF.

Fixes: e284fc280473 (i40e: Add and delete cloud filter)
Signed-off-by: Grzegorz Szczurek <grzegorzx.szczurek@...el.com>
Signed-off-by: Mateusz Palczewski <mateusz.palczewski@...el.com>
Tested-by: Bindushree P <Bindushree.p@...el.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c |    5 -----
 1 file changed, 5 deletions(-)

--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -3787,11 +3787,6 @@ static int i40e_vc_add_qch_msg(struct i4
 
 	/* set this flag only after making sure all inputs are sane */
 	vf->adq_enabled = true;
-	/* num_req_queues is set when user changes number of queues via ethtool
-	 * and this causes issue for default VSI(which depends on this variable)
-	 * when ADq is enabled, hence reset it.
-	 */
-	vf->num_req_queues = 0;
 
 	/* reset the VF in order to allocate resources */
 	i40e_vc_reset_vf(vf, true);