PF byte count and packet counts are not reported

[karlism]

Hello,

py-pf PFStatus.bytes and PFStatus.packets objects seem to always return zero value. Following python script example (taken from documentation here: http://www.kernel-panic.it/programming/py-pf/pf3.html):

#!/usr/bin/env python

import pf

filter = pf.PacketFilter()
status = filter.get_status()
print(status.states)

print """Bytes in
  IPv4: {0[0]}
  IPv6: {0[1]}""".format(status.bytes["in"])

print """Bytes out
  IPv4: {0[0]}
  IPv6: {0[1]}""".format(status.bytes["out"])

print """Packets in
  Passed
    IPv4: {0[0]}
    IPv6: {0[1]}
  Blocked
    IPv4: {1[0]}
    IPv6: {1[1]}""".format(status.packets["in"][pf.PF_PASS],
                           status.packets["in"][pf.PF_DROP])

Returns following output during large file download:

3
Bytes in
  IPv4: 0
  IPv6: 0
Bytes out
  IPv4: 0
  IPv6: 0
Packets in
  Passed
    IPv4: 0
    IPv6: 0
  Blocked
    IPv4: 0
    IPv6: 0

As can be seen, state count is reported properly, but byte and packet counts are always zero.

I'm using py-pf 0.1.9 installed from OpenBSD 6.4 packages for amd64 architecture.

[dotpy]

Hi,

I'm still working on updating py-pf to OpenBSD 6.4, but the statistics appear to already work.
The problem is that you did not set the status interface in your script; just call filter.set_status_if(<interface>) before you call filter.get_status().
For example:

filter = pf.PacketFilter()
filter.set_status_if("vio0")
status = filter.get_status()
[ ... ]

My output looks like:

46
Bytes in
  IPv4: 154894
  IPv6: 40915
Bytes out
  IPv4: 93275
  IPv6: 736
Packets in
  Passed
    IPv4: 1748
    IPv6: 511
  Blocked
    IPv4: 139
    IPv6: 43

Hope this helps!
Cheers,
Daniele