[lvs-devel] More connection info - /proc/net/ip_vs_conn_sync

[rumen at voicecho.com (Rumen Bogdanovski)]

Hi, 
while figuring out how to handle sync-created connections, here is a
hopefully harmless patch that makes the user aware which connections are
local and which received using /proc/net/ip_vs_conn_sync. According to
my experience so far it is useful be able to distinguish which
connections are simply inactive which synced.

# ipvsadm -ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  192.168.0.222:5900 wlc
  -> 192.168.0.50:5900            Route   999    1          1         
  -> 192.168.0.51:5900            Route   995    1          1    

# cat /proc/net/ip_vs_conn_sync 
Pro FromIP   FPrt ToIP     TPrt DestIP   DPrt State       Origin Expires
TCP C0A8000A B00D C0A800DE 170C C0A80033 170C ESTABLISHED LOCAL      899
TCP C0A8000A B009 C0A800DE 170C C0A80032 170C ESTABLISHED LOCAL      856
TCP C0A8000A B00C C0A800DE 170C C0A80032 170C ESTABLISHED SYNC       899
TCP C0A8000A B00B C0A800DE 170C C0A80033 170C ESTABLISHED SYNC       897

So No inactive connections here.

regards,
Rumen