Date: Sun, 24 Jul 2005 11:17:45 -0700 From: Sam Leffler <sam@errno.com> To: "Christian S.J. Peron" <csjp@FreeBSD.org> Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/net bpf.c bpfdesc.h Message-ID: <42E3DB49.4070704@errno.com> In-Reply-To: <20050724172508.GA15547@freefall.freebsd.org> References: <200507241721.j6OHLImZ032073@repoman.freebsd.org> <20050724172508.GA15547@freefall.freebsd.org>
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Christian S.J. Peron wrote: > On Sun, Jul 24, 2005 at 05:21:18PM +0000, Christian S.J. Peron wrote: > >>csjp 2005-07-24 17:21:18 UTC >> >> FreeBSD src repository >> >> Modified files: >> sys/net bpf.c bpfdesc.h >> Log: >> Introduce new sysctl variable: net.bpf.stats. This sysctl variable can >> be used to pass statistics regarding dropped, matched and received >> packet counts from the kernel to user-space. While we are here >> introduce a new counter for filtered or matched packets. We currently >> keep track of packets received or dropped by the bpf device, but not >> how many packets actually matched the bpf filter. >> > > > I have a userspace program to display these stats: > > http://people.freebsd.org/~csjp/bpfstat.1122182321.shar > > An example of the output is: > > $ bpfstat > pid netif flags recv drop match sblen hblen command > 10750 rl0 p--s- 260 0 260 2426 0 tcpdump > $ > > I plan to move this into base, but I would like some people > to test/review it first. > There are numerous little programs like this looking for a common home. I suggest you stick your program in the tools area until we can resolve where to integrate them. I've wanted to overhaul netstats in a manner similar to ifconfig so it's easy to add code like this and/or write these as modules that are dynamically loaded (e.g. so vendors can distribute add-ons). Sam
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