kern/183271: statistic not updated on em in netmap mode

[Aleksey Fedorov]

>Number:         183271
>Category:       kern
>Synopsis:       statistic not updated on em in netmap mode
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Oct 24 11:10:00 UTC 2013
>Closed-Date:
>Last-Modified:
>Originator:     Aleksey Fedorov
>Release:        9.2
>Organization:
>Environment:
FreeBSD test-bsd.joxnet.ru 9.2-RELEASE FreeBSD 9.2-RELEASE #0: Thu Oct 24 14:39:02 MSK 2013     root at test-bsd.joxnet.ru:/usr/src/sys/amd64/compile/DEVEL  amd64

>Description:
em0 in netmap mode.
netstat show that no packets is received and transmitted while traffic is present.

# netstat -I em0 1
            input          (em0)           output
   packets  errs idrops      bytes    packets  errs      bytes colls
         0     0     0          0          0     0          0     0
         0     0     0          0          0     0          0     0
         0     0     0          0          0     0          0     0
         0     0     0          0          0     0          0     0
         0     0     0          0          0     0          0     0
         0     0     0          0          0     0          0     0

>How-To-Repeat:
Start any demo from  /usr/src/tools/tools/netmap on em interface and see counters using netstat.
>Fix:
not known

>Release-Note:
>Audit-Trail:
>Unformatted: