From: Peilin Ye <peilin.ye@bytedance.com>
Date: Sun, 11 Jun 2023 03:30:15 +0000 (-0700)
Subject: net/sched: Refactor qdisc_graft() for ingress and clsact Qdiscs
X-Git-Tag: v6.6.17~4696^2~17^2~1
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2d5f6a8d7aef7852a9ecc555f88c673a1c91754f;p=platform%2Fkernel%2Flinux-rpi.git

net/sched: Refactor qdisc_graft() for ingress and clsact Qdiscs

Grafting ingress and clsact Qdiscs does not need a for-loop in
qdisc_graft().  Refactor it.  No functional changes intended.

Tested-by: Pedro Tammela <pctammela@mojatatu.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Reviewed-by: Jamal Hadi Salim <jhs@mojatatu.com>
Reviewed-by: Vlad Buslov <vladbu@nvidia.com>
Signed-off-by: Peilin Ye <peilin.ye@bytedance.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---

diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index e4b6452..094ca3a 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -1079,12 +1079,12 @@ static int qdisc_graft(struct net_device *dev, struct Qdisc *parent,
 
 	if (parent == NULL) {
 		unsigned int i, num_q, ingress;
+		struct netdev_queue *dev_queue;
 
 		ingress = 0;
 		num_q = dev->num_tx_queues;
 		if ((q && q->flags & TCQ_F_INGRESS) ||
 		    (new && new->flags & TCQ_F_INGRESS)) {
-			num_q = 1;
 			ingress = 1;
 			if (!dev_ingress_queue(dev)) {
 				NL_SET_ERR_MSG(extack, "Device does not have an ingress queue");
@@ -1100,18 +1100,18 @@ static int qdisc_graft(struct net_device *dev, struct Qdisc *parent,
 		if (new && new->ops->attach && !ingress)
 			goto skip;
 
-		for (i = 0; i < num_q; i++) {
-			struct netdev_queue *dev_queue = dev_ingress_queue(dev);
-
-			if (!ingress)
+		if (!ingress) {
+			for (i = 0; i < num_q; i++) {
 				dev_queue = netdev_get_tx_queue(dev, i);
+				old = dev_graft_qdisc(dev_queue, new);
 
-			old = dev_graft_qdisc(dev_queue, new);
-			if (new && i > 0)
-				qdisc_refcount_inc(new);
-
-			if (!ingress)
+				if (new && i > 0)
+					qdisc_refcount_inc(new);
 				qdisc_put(old);
+			}
+		} else {
+			dev_queue = dev_ingress_queue(dev);
+			old = dev_graft_qdisc(dev_queue, new);
 		}
 
 skip: