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ipvs: use 64-bit rates in stats

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IPVS stats are limited to 2^(32-10) conns/s and packets/s,
2^(32-5) bytes/s. It is time to use 64 bits:

* Change all conn/packet kernel counters to 64-bit and update
them in u64_stats_update_{begin,end} section

* In kernel use struct ip_vs_kstats instead of the user-space
struct ip_vs_stats_user and use new func ip_vs_export_stats_user
to export it to sockopt users to preserve compatibility with
32-bit values

* Rename cpu counters "ustats" to "cnt"

* To netlink users provide additionally 64-bit stats:
IPVS_SVC_ATTR_STATS64 and IPVS_DEST_ATTR_STATS64. Old stats
remain for old binaries.

* We can use ip_vs_copy_stats in ip_vs_stats_percpu_show

Thanks to Chris Caputo for providing initial patch for ip_vs_est.c

Signed-off-by: Chris Caputo <ccaputo@alt.net>
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
This commit is contained in:
Julian Anastasov 2015-02-06 09:44:44 +02:00 • committed by Simon Horman
commit cd67cd5eb2
5 changed files with 219 additions and 136 deletions
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7
include/uapi/linux/ip_vs.h
View file

@ -358,6 +358,8 @@ enum {
IPVS_SVC_ATTR_PE_NAME, /* name of ct retriever */
IPVS_SVC_ATTR_STATS64, /* nested attribute for service stats */
__IPVS_SVC_ATTR_MAX,
};
@ -387,6 +389,8 @@ enum {
IPVS_DEST_ATTR_ADDR_FAMILY, /* Address family of address */
IPVS_DEST_ATTR_STATS64, /* nested attribute for dest stats */
__IPVS_DEST_ATTR_MAX,
};
@ -410,7 +414,8 @@ enum {
/*
* Attributes used to describe service or destination entry statistics
*
* Used inside nested attributes IPVS_SVC_ATTR_STATS and IPVS_DEST_ATTR_STATS
* Used inside nested attributes IPVS_SVC_ATTR_STATS, IPVS_DEST_ATTR_STATS,
* IPVS_SVC_ATTR_STATS64 and IPVS_DEST_ATTR_STATS64.
*/
enum {
IPVS_STATS_ATTR_UNSPEC = 0,