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50dc9a8572
The only factor differentiating per-CPU bstats data type (struct gnet_stats_basic_cpu) from the packed non-per-CPU one (struct gnet_stats_basic_packed) was a u64_stats sync point inside the former. The two data types are now equivalent: earlier commits added a u64_stats sync point to the latter. Combine both data types into "struct gnet_stats_basic_sync". This eliminates redundancy and simplifies the bstats read/write APIs. Use u64_stats_t for bstats "packets" and "bytes" data types. On 64-bit architectures, u64_stats sync points do not use sequence counter protection. Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
27 lines
717 B
C
27 lines
717 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_sync 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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