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Commit 9e528d89 authored by Alexei Starovoitov's avatar Alexei Starovoitov Committed by David S. Miller
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net_sched: convert rsvp to call tcf_exts_destroy from rcu callback 



Adjust destroy path of cls_rsvp to call tcf_exts_destroy() after
rcu grace period.

Signed-off-by: default avatarAlexei Starovoitov <ast@plumgrid.com>
Acked-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent ed7aa879

net/sched/cls_rsvp.h

+14 −4
Original line number Diff line number Diff line
@@ -283,12 +283,22 @@ static int rsvp_init(struct tcf_proto *tp) 
	return -ENOBUFS;

}



static void

rsvp_delete_filter(struct tcf_proto *tp, struct rsvp_filter *f)

static void rsvp_delete_filter_rcu(struct rcu_head *head)

{

	tcf_unbind_filter(tp, &f->res);

	struct rsvp_filter *f = container_of(head, struct rsvp_filter, rcu);



	tcf_exts_destroy(&f->exts);

	kfree_rcu(f, rcu);

	kfree(f);

}



static void rsvp_delete_filter(struct tcf_proto *tp, struct rsvp_filter *f)

{

	tcf_unbind_filter(tp, &f->res);

	/* all classifiers are required to call tcf_exts_destroy() after rcu

	 * grace period, since converted-to-rcu actions are relying on that

	 * in cleanup() callback

	 */

	call_rcu(&f->rcu, rsvp_delete_filter_rcu);

}



static bool rsvp_destroy(struct tcf_proto *tp, bool force)