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: Alexei Starovoitov <ast@plumgrid.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -283,12 +283,22 @@ static int rsvp_init(struct tcf_proto *tp)
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return -ENOBUFS;
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return -ENOBUFS;
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}
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}
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static void
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static void rsvp_delete_filter_rcu(struct rcu_head *head)
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rsvp_delete_filter(struct tcf_proto *tp, struct rsvp_filter *f)
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{
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struct rsvp_filter *f = container_of(head, struct rsvp_filter, rcu);
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tcf_exts_destroy(&f->exts);
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kfree(f);
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}
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static void rsvp_delete_filter(struct tcf_proto *tp, struct rsvp_filter *f)
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{
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{
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tcf_unbind_filter(tp, &f->res);
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tcf_unbind_filter(tp, &f->res);
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tcf_exts_destroy(&f->exts);
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/* all classifiers are required to call tcf_exts_destroy() after rcu
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kfree_rcu(f, rcu);
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* grace period, since converted-to-rcu actions are relying on that
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* in cleanup() callback
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*/
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call_rcu(&f->rcu, rsvp_delete_filter_rcu);
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}
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}
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static bool rsvp_destroy(struct tcf_proto *tp, bool force)
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static bool rsvp_destroy(struct tcf_proto *tp, bool force)
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