pfctl(8) and systat(8) to display fragment reassembly statistics

The OpenBSD toolbox for network debugging just got better. In a recent thread on tech@ titled pfctl show fragment info, Alexander Bluhm (bluhm@) posted a patch to enable packet reassembly statistics in pfctl(8).

Several other developers joined in, and Claudio Jeker (claudio@) suggested that systat(8) should too be enhanced to display packet reassembly data in pf(4) related views.

This suggestion was well received, and the resulting code has now been committed,

List:       openbsd-cvs
Subject:    CVS: cvs.openbsd.org: src
From:       Alexander Bluhm &.t;bluhm () openbsd ! org>
Date:       2024-04-22 13:30:22

CVSROOT:	/cvs
Module name:	src
Changes by:	bluhm@cvs.openbsd.org	2024/04/22 07:30:22

Modified files:
	sys/net        : pf_ioctl.c pf_norm.c pfvar.h pfvar_priv.h 
	sbin/pfctl     : pfctl_parser.c 
	usr.bin/systat : pf.c 

Log message:
Show pf fragment reassembly counters.

Framgent count and statistics are stored in struct pf_status.  From
there pfctl(8) and systat(1) collect and show them.  Note that pfctl
-s info needs the -v switch to show fragments.  As fragment reassembly
has its own mutex, also grab this in pf ipctl(2) and sysctl(2) code.

input claudio@; OK henning@

and will be available in -current snapshots.

If you know you occasionally or even frequently need to see fragment reassembly statistics, you will appreciate this improvement to the two crucial tools pfctl(8) and systat(8).