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IPVS: netns, ip_vs_stats and its procfs

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The statistic counter locks for every packet are now removed,
and that statistic is now per CPU, i.e. no locks needed.
However summing is made in ip_vs_est into ip_vs_stats struct
which is moved to ipvs struc.

procfs, ip_vs_stats now have a "per cpu" count and a grand total.
A new function seq_file_single_net() in ip_vs.h created for handling of
single_open_net() since it does not place net ptr in a struct, like others.

/var/lib/lxc # cat /proc/net/ip_vs_stats_percpu
       Total Incoming Outgoing         Incoming         Outgoing
CPU    Conns  Packets  Packets            Bytes            Bytes
  0        0        3        1               9D               34
  1        0        1        2               49               70
  2        0        1        2               34               76
  3        1        2        2               70               74
  ~        1        7        7              18A              18E

     Conns/s   Pkts/s   Pkts/s          Bytes/s          Bytes/s
           0        0        0                0                0

*v3
ip_vs_stats reamains as before, instead ip_vs_stats_percpu is added.
u64 seq lock added

*v4
Bug correction inbytes and outbytes as own vars..
per_cpu counter for all stats now as suggested by Julian.

[horms@verge.net.au: removed whitespace-change-only hunk]
Signed-off-by: Hans Schillstrom <hans.schillstrom@ericsson.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
This commit is contained in:
Hans Schillstrom
2011-01-03 14:44:56 +01:00
committed by Simon Horman
parent f131315fa2
commit b17fc9963f
5 changed files with 252 additions and 57 deletions
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4
include/net/netns/ip_vs.h
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@@ -61,6 +61,10 @@ struct netns_ipvs {
struct list_head sctp_apps[SCTP_APP_TAB_SIZE];
spinlock_t sctp_app_lock;
#endif
/* ip_vs_ctl */
struct ip_vs_stats *tot_stats; /* Statistics & est. */
struct ip_vs_cpu_stats __percpu *cpustats; /* Stats per cpu */
seqcount_t *ustats_seq; /* u64 read retry */
/* ip_vs_lblc */
int sysctl_lblc_expiration;