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Commit 9da93ece authored by Jakub Kicinski's avatar Jakub Kicinski Committed by David S. Miller
Browse files

net: sched: refactor grafting Qdiscs with a parent 



The code for grafting Qdiscs when there is a parent has two needless
indentation levels, and breaks the "keep the success path unindented"
guideline.  Refactor.

Signed-off-by: default avatarJakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: default avatarJohn Hurley <john.hurley@netronome.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent bfaee911

net/sched/sch_api.c

+14 −14
Original line number Diff line number Diff line
@@ -1007,7 +1007,6 @@ static int qdisc_graft(struct net_device *dev, struct Qdisc *parent, 
{

	struct Qdisc *q = old;

	struct net *net = dev_net(dev);

	int err = 0;



	if (parent == NULL) {

		unsigned int i, num_q, ingress;
@@ -1062,28 +1061,29 @@ static int qdisc_graft(struct net_device *dev, struct Qdisc *parent, 
			dev_activate(dev);

	} else {

		const struct Qdisc_class_ops *cops = parent->ops->cl_ops;

		unsigned long cl;

		int err;



		/* Only support running class lockless if parent is lockless */

		if (new && (new->flags & TCQ_F_NOLOCK) &&

		    parent && !(parent->flags & TCQ_F_NOLOCK))

			new->flags &= ~TCQ_F_NOLOCK;



		err = -EOPNOTSUPP;

		if (cops && cops->graft) {

			unsigned long cl = cops->find(parent, classid);

		if (!cops || !cops->graft)

			return -EOPNOTSUPP;



			if (cl) {

				err = cops->graft(parent, cl, new, &old,

						  extack);

			} else {

		cl = cops->find(parent, classid);

		if (!cl) {

			NL_SET_ERR_MSG(extack, "Specified class not found");

				err = -ENOENT;

			}

			return -ENOENT;

		}

		if (!err)



		err = cops->graft(parent, cl, new, &old, extack);

		if (err)

			return err;

		notify_and_destroy(net, skb, n, classid, old, new);

	}

	return err;

	return 0;

}



static int qdisc_block_indexes_set(struct Qdisc *sch, struct nlattr **tca,