diff mbox series

[v4,net-next,06/15] net/sched: mqprio: refactor offloading and unoffloading to dedicated functions

Message ID 20230130173145.475943-7-vladimir.oltean@nxp.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series ENETC mqprio/taprio cleanup | expand

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netdev/tree_selection success Clearly marked for net-next, async
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 1 this patch: 1
netdev/cc_maintainers success CCed 8 of 8 maintainers
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 1 this patch: 1
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 123 lines checked
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netdev/source_inline success Was 0 now: 0

Commit Message

Vladimir Oltean Jan. 30, 2023, 5:31 p.m. UTC 
Some more logic will be added to mqprio offloading, so split that code
up from mqprio_init(), which is already large, and create a new
function, mqprio_enable_offload(), similar to taprio_enable_offload().
Also create the opposite function mqprio_disable_offload().

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
---
v1->v4: none

 net/sched/sch_mqprio.c | 102 ++++++++++++++++++++++++-----------------
 1 file changed, 59 insertions(+), 43 deletions(-)

Comments

Simon Horman Feb. 1, 2023, 2:07 p.m. UTC | #1 
On Mon, Jan 30, 2023 at 07:31:36PM +0200, Vladimir Oltean wrote:
> Some more logic will be added to mqprio offloading, so split that code
> up from mqprio_init(), which is already large, and create a new
> function, mqprio_enable_offload(), similar to taprio_enable_offload().
> Also create the opposite function mqprio_disable_offload().
> 
> Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>

Signed-off-by: Simon Horman <simon.horman@corigine.com>
Simon Horman Feb. 1, 2023, 2:09 p.m. UTC | #2 
On Wed, Feb 01, 2023 at 03:07:02PM +0100, Simon Horman wrote:
> On Mon, Jan 30, 2023 at 07:31:36PM +0200, Vladimir Oltean wrote:
> > Some more logic will be added to mqprio offloading, so split that code
> > up from mqprio_init(), which is already large, and create a new
> > function, mqprio_enable_offload(), similar to taprio_enable_offload().
> > Also create the opposite function mqprio_disable_offload().
> > 
> > Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
> > Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
> 
> Signed-off-by: Simon Horman <simon.horman@corigine.com>

Sorry, I hit the wrong button.
I meant:

Reviewed-by: Simon Horman <simon.horman@corigine.com>
diff mbox series

Patch

diff --git a/net/sched/sch_mqprio.c b/net/sched/sch_mqprio.c
index d2d8a02ded05..3579a64da06e 100644
--- a/net/sched/sch_mqprio.c
+++ b/net/sched/sch_mqprio.c
@@ -27,6 +27,61 @@  struct mqprio_sched {
 	u64 max_rate[TC_QOPT_MAX_QUEUE];
 };
 
+static int mqprio_enable_offload(struct Qdisc *sch,
+				 const struct tc_mqprio_qopt *qopt)
+{
+	struct tc_mqprio_qopt_offload mqprio = {.qopt = *qopt};
+	struct mqprio_sched *priv = qdisc_priv(sch);
+	struct net_device *dev = qdisc_dev(sch);
+	int err, i;
+
+	switch (priv->mode) {
+	case TC_MQPRIO_MODE_DCB:
+		if (priv->shaper != TC_MQPRIO_SHAPER_DCB)
+			return -EINVAL;
+		break;
+	case TC_MQPRIO_MODE_CHANNEL:
+		mqprio.flags = priv->flags;
+		if (priv->flags & TC_MQPRIO_F_MODE)
+			mqprio.mode = priv->mode;
+		if (priv->flags & TC_MQPRIO_F_SHAPER)
+			mqprio.shaper = priv->shaper;
+		if (priv->flags & TC_MQPRIO_F_MIN_RATE)
+			for (i = 0; i < mqprio.qopt.num_tc; i++)
+				mqprio.min_rate[i] = priv->min_rate[i];
+		if (priv->flags & TC_MQPRIO_F_MAX_RATE)
+			for (i = 0; i < mqprio.qopt.num_tc; i++)
+				mqprio.max_rate[i] = priv->max_rate[i];
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	err = dev->netdev_ops->ndo_setup_tc(dev, TC_SETUP_QDISC_MQPRIO,
+					    &mqprio);
+	if (err)
+		return err;
+
+	priv->hw_offload = mqprio.qopt.hw;
+
+	return 0;
+}
+
+static void mqprio_disable_offload(struct Qdisc *sch)
+{
+	struct tc_mqprio_qopt_offload mqprio = { { 0 } };
+	struct mqprio_sched *priv = qdisc_priv(sch);
+	struct net_device *dev = qdisc_dev(sch);
+
+	switch (priv->mode) {
+	case TC_MQPRIO_MODE_DCB:
+	case TC_MQPRIO_MODE_CHANNEL:
+		dev->netdev_ops->ndo_setup_tc(dev, TC_SETUP_QDISC_MQPRIO,
+					      &mqprio);
+		break;
+	}
+}
+
 static void mqprio_destroy(struct Qdisc *sch)
 {
 	struct net_device *dev = qdisc_dev(sch);
@@ -41,22 +96,10 @@  static void mqprio_destroy(struct Qdisc *sch)
 		kfree(priv->qdiscs);
 	}
 
-	if (priv->hw_offload && dev->netdev_ops->ndo_setup_tc) {
-		struct tc_mqprio_qopt_offload mqprio = { { 0 } };
-
-		switch (priv->mode) {
-		case TC_MQPRIO_MODE_DCB:
-		case TC_MQPRIO_MODE_CHANNEL:
-			dev->netdev_ops->ndo_setup_tc(dev,
-						      TC_SETUP_QDISC_MQPRIO,
-						      &mqprio);
-			break;
-		default:
-			return;
-		}
-	} else {
+	if (priv->hw_offload && dev->netdev_ops->ndo_setup_tc)
+		mqprio_disable_offload(sch);
+	else
 		netdev_set_num_tc(dev, 0);
-	}
 }
 
 static int mqprio_parse_opt(struct net_device *dev, struct tc_mqprio_qopt *qopt)
@@ -253,36 +296,9 @@  static int mqprio_init(struct Qdisc *sch, struct nlattr *opt,
 	 * supplied and verified mapping
 	 */
 	if (qopt->hw) {
-		struct tc_mqprio_qopt_offload mqprio = {.qopt = *qopt};
-
-		switch (priv->mode) {
-		case TC_MQPRIO_MODE_DCB:
-			if (priv->shaper != TC_MQPRIO_SHAPER_DCB)
-				return -EINVAL;
-			break;
-		case TC_MQPRIO_MODE_CHANNEL:
-			mqprio.flags = priv->flags;
-			if (priv->flags & TC_MQPRIO_F_MODE)
-				mqprio.mode = priv->mode;
-			if (priv->flags & TC_MQPRIO_F_SHAPER)
-				mqprio.shaper = priv->shaper;
-			if (priv->flags & TC_MQPRIO_F_MIN_RATE)
-				for (i = 0; i < mqprio.qopt.num_tc; i++)
-					mqprio.min_rate[i] = priv->min_rate[i];
-			if (priv->flags & TC_MQPRIO_F_MAX_RATE)
-				for (i = 0; i < mqprio.qopt.num_tc; i++)
-					mqprio.max_rate[i] = priv->max_rate[i];
-			break;
-		default:
-			return -EINVAL;
-		}
-		err = dev->netdev_ops->ndo_setup_tc(dev,
-						    TC_SETUP_QDISC_MQPRIO,
-						    &mqprio);
+		err = mqprio_enable_offload(sch, qopt);
 		if (err)
 			return err;
-
-		priv->hw_offload = mqprio.qopt.hw;
 	} else {
 		netdev_set_num_tc(dev, qopt->num_tc);
 		for (i = 0; i < qopt->num_tc; i++)