pfstat - Print packet filter status information
If no options are given, all are assumed (except for the verbose option,
-c Counts. Displays various counts (per ethernet unit) including number
of packets sent and received, the number of packets dropped due to full
input queues, the number of packets not wanted by any filter, and the
number of packets missed by the interface.
-d Descriptors. Displays OpenDescriptors for each minor device.
-f Filters. Displays packet filters for each minor device.
-p Parameters. Displays device parameters including device type, header
and address lengths, maximum transmission units (MTU), and interface
and broadcast addresses.
-q QueueElements. Displays the QueueElements.
-s Scavenger. Displays the FreeQueue and Scavenger statistics.
-v Verbose. Displays information for minor devices not actually in use
and complete queue information, only if this option is given.
Limits output to information about specified units. If no digits are
given, all units are displayed. Valid digits are 0 to 7.
The pfstat command interprets the data structures of the packet filter
driver packetfilter(7). The data structures are contained in /dev/kmem.
By default, some of the output might not be easily read on an 80-character
line. You might want to use some of the options to obtain a less verbose
but more readable listing.
Because of the dynamic nature of a running system, pfstat might not provide
a consistent view of the system. You should use this command for analyzing
static or slowly-varying problems, not transient ones.
This section describes the information displayed in the output of the
pfstat command under the headings AllDescriptors, Filters, and QueueElts.
# Minor device number for open descriptor.
LOC Descriptor location.
Forward link to other descriptors.
Blank, or one of the following:
wait Waiting for input, indefinite wait
timed Waiting for input, timed wait
tout Has timed out
Addresses of ``Queue Elements'' for waiting packets.
Number of packets queued for input/maximum for this queue.
Timeout duration in clock ticks (if the -v [Verbose] option is not
given, the times may be expressed as minutes [with a trailing ``m''],
hours [with a trailing ``h''], or simply ``long'', to keep the columns
Shows which mode bits are set for the minor device; each bit is encoded
as a single character:
? An unknown mode bit is set.
SIG Signal number to be delivered when a packet arrives.
Process to be signaled when a packet arrives.
PID Process id which enabled the signal.
# Minor device number of filter.
Count of packets accepted by this filter.
Count of ``recent'' drops for this filter.
PRI Priority of filter. (Not applicable to BPF-style filters.)
LEN Length of filter (in shortwords).
See packetfilter(7) for interpretation of packet filters. See bpf(7)
for interpretation of BPF-style filters.
LOC Location of queue element.
Forward and backward links.
REF Reference count for queue element.
Per-packet flag bits set; each bit is encoded as a single character:
? An unknown flag bit is set.
Count of packets dropped between the time previous packet was queued
and the time this packet was queued.
Approximate time this packet was received.
Default source of tables
Commands: netstat(1), pfconfig(8)
Files: bpf(7), packetfilter(7)