45203a3b38
struct gnet_stats_rate_est contains u32 fields, so the bytes per second field can wrap at 34360Mbit. Add a new gnet_stats_rate_est64 structure to get 64bit bps/pps fields, and switch the kernel to use this structure natively. This structure is dumped to user space as a new attribute : TCA_STATS_RATE_EST64 Old tc command will now display the capped bps (to 34360Mbit), instead of wrapped values, and updated tc command will display correct information. Old tc command output, after patch : eric:~# tc -s -d qd sh dev lo qdisc pfifo 8001: root refcnt 2 limit 1000p Sent 80868245400 bytes 1978837 pkt (dropped 0, overlimits 0 requeues 0) rate 34360Mbit 189696pps backlog 0b 0p requeues 0 This patch carefully reorganizes "struct Qdisc" layout to get optimal performance on SMP. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
23 lines
639 B
C
23 lines
639 B
C
#ifndef _XT_RATEEST_H
|
|
#define _XT_RATEEST_H
|
|
|
|
struct xt_rateest {
|
|
/* keep lock and bstats on same cache line to speedup xt_rateest_tg() */
|
|
struct gnet_stats_basic_packed bstats;
|
|
spinlock_t lock;
|
|
/* keep rstats and lock on same cache line to speedup xt_rateest_mt() */
|
|
struct gnet_stats_rate_est64 rstats;
|
|
|
|
/* following fields not accessed in hot path */
|
|
struct hlist_node list;
|
|
char name[IFNAMSIZ];
|
|
unsigned int refcnt;
|
|
struct gnet_estimator params;
|
|
struct rcu_head rcu;
|
|
};
|
|
|
|
extern struct xt_rateest *xt_rateest_lookup(const char *name);
|
|
extern void xt_rateest_put(struct xt_rateest *est);
|
|
|
|
#endif /* _XT_RATEEST_H */
|