3427b2ab63
As suggested by Eric, we need to make the xt_rateest hash table and its lock per netns to reduce lock contentions. Cc: Florian Westphal <fw@strlen.de> Cc: Eric Dumazet <edumazet@google.com> Cc: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
28 lines
719 B
C
28 lines
719 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _XT_RATEEST_H
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#define _XT_RATEEST_H
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#include <net/gen_stats.h>
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struct xt_rateest {
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/* keep lock and bstats on same cache line to speedup xt_rateest_tg() */
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struct gnet_stats_basic_packed bstats;
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spinlock_t lock;
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/* following fields not accessed in hot path */
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unsigned int refcnt;
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struct hlist_node list;
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char name[IFNAMSIZ];
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struct gnet_estimator params;
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struct rcu_head rcu;
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/* keep this field far away to speedup xt_rateest_mt() */
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struct net_rate_estimator __rcu *rate_est;
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};
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struct xt_rateest *xt_rateest_lookup(struct net *net, const char *name);
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void xt_rateest_put(struct net *net, struct xt_rateest *est);
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#endif /* _XT_RATEEST_H */
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