Add helper i40e_vsi_reconfig_tc(vsi) that configures TC
for given VSI using previously stored TC bitmap.

Effectively replaces open-coded patterns:

enabled_tc = vsi->tc_config.enabled_tc;
vsi->tc_config.enabled_tc = 0;
i40e_vsi_config_tc(vsi, enabled_tc);

Reviewed-by: Michal Schmidt <mschmidt@redhat.com>
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
---
 drivers/net/ethernet/intel/i40e/i40e_main.c | 31 +++++++++++++++------
 1 file changed, 23 insertions(+), 8 deletions(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index 2e1955064abb..6c25d02ea05e 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -5924,6 +5924,27 @@ static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
 	return ret;
 }
 
+/**
+ * i40e_vsi_reconfig_tc - Reconfigure VSI Tx Scheduler for stored TC map
+ * @vsi: VSI to be reconfigured
+ *
+ * This reconfigures a particular VSI for TCs that are mapped to the
+ * TC bitmap stored previously for the VSI.
+ *
+ * NOTE:
+ * It is expected that the VSI queues have been quisced before calling
+ * this function.
+ **/
+static int i40e_vsi_reconfig_tc(struct i40e_vsi *vsi)
+{
+	u8 enabled_tc;
+
+	enabled_tc = vsi->tc_config.enabled_tc;
+	vsi->tc_config.enabled_tc = 0;
+
+	return i40e_vsi_config_tc(vsi, enabled_tc);
+}
+
 /**
  * i40e_get_link_speed - Returns link speed for the interface
  * @vsi: VSI to be configured
@@ -14290,7 +14311,6 @@ static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
 	struct i40e_vsi *main_vsi;
 	u16 alloc_queue_pairs;
 	struct i40e_pf *pf;
-	u8 enabled_tc;
 	int ret;
 
 	if (!vsi)
@@ -14323,10 +14343,8 @@ static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
 	 * layout configurations.
 	 */
 	main_vsi = i40e_pf_get_main_vsi(pf);
-	enabled_tc = main_vsi->tc_config.enabled_tc;
-	main_vsi->tc_config.enabled_tc = 0;
 	main_vsi->seid = pf->main_vsi_seid;
-	i40e_vsi_config_tc(main_vsi, enabled_tc);
+	i40e_vsi_reconfig_tc(main_vsi);
 
 	if (vsi->type == I40E_VSI_MAIN)
 		i40e_rm_default_mac_filter(vsi, pf->hw.mac.perm_addr);
@@ -15085,11 +15103,8 @@ static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit, bool lock_acqui
 		}
 	} else {
 		/* force a reset of TC and queue layout configurations */
-		u8 enabled_tc = main_vsi->tc_config.enabled_tc;
-
-		main_vsi->tc_config.enabled_tc = 0;
 		main_vsi->seid = pf->main_vsi_seid;
-		i40e_vsi_config_tc(main_vsi, enabled_tc);
+		i40e_vsi_reconfig_tc(main_vsi);
 	}
 	i40e_vlan_stripping_disable(main_vsi);
 
-- 
2.43.0

> -----Original Message-----
> From: Intel-wired-lan <intel-wired-lan-bounces@osuosl.org> On Behalf Of Ivan Vecera
> Sent: Wednesday, March 27, 2024 1:28 PM
> To: intel-wired-lan@lists.osuosl.org
> Cc: netdev@vger.kernel.org; linux-kernel@vger.kernel.org; Loktionov, Aleksandr <aleksandr.loktionov@intel.com>; edumazet@google.com; Nguyen, Anthony L <anthony.l.nguyen@intel.com>; kuba@kernel.org; pabeni@redhat.com; davem@davemloft.net
> Subject: [Intel-wired-lan] [PATCH iwl-next v2 7/7] i40e: Add and use helper to reconfigure TC for given VSI
>
> Add helper i40e_vsi_reconfig_tc(vsi) that configures TC for given VSI using previously stored TC bitmap.
> 
> Effectively replaces open-coded patterns:
>
> enabled_tc = vsi->tc_config.enabled_tc;
> vsi->tc_config.enabled_tc = 0;
> i40e_vsi_config_tc(vsi, enabled_tc);
>
> Reviewed-by: Michal Schmidt <mschmidt@redhat.com>
> Signed-off-by: Ivan Vecera <ivecera@redhat.com>
> ---
>  drivers/net/ethernet/intel/i40e/i40e_main.c | 31 +++++++++++++++------
>  1 file changed, 23 insertions(+), 8 deletions(-)
>

Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)

On Wed, Mar 27, 2024 at 08:57:33AM +0100, Ivan Vecera wrote:
> Add helper i40e_vsi_reconfig_tc(vsi) that configures TC
> for given VSI using previously stored TC bitmap.
> 
> Effectively replaces open-coded patterns:
> 
> enabled_tc = vsi->tc_config.enabled_tc;
> vsi->tc_config.enabled_tc = 0;
> i40e_vsi_config_tc(vsi, enabled_tc);
> 
> Reviewed-by: Michal Schmidt <mschmidt@redhat.com>
> Signed-off-by: Ivan Vecera <ivecera@redhat.com>

Reviewed-by: Simon Horman <horms@kernel.org>