Date: Wed, 13 Aug 2008 15:41:21 +0000 (UTC) From: Ed Schouten <ed@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/lib/libpcap config.h src/sys/net bpf.c Message-ID: <200808131545.m7DFjlLP058986@repoman.freebsd.org>
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ed 2008-08-13 15:41:21 UTC
FreeBSD src repository
Modified files:
lib/libpcap config.h
sys/net bpf.c
Log:
SVN rev 181690 on 2008-08-13 15:41:21Z by ed
Change bpf(4) to use the cdevpriv API.
Right now the bpf(4) driver uses the cloning API to generate /dev/bpf%u.
When an application such as tcpdump needs a BPF, it opens /dev/bpf0,
/dev/bpf1, etc. until it opens the first available device node. We used
this approach, because our devfs implementation didn't allow
per-descriptor data.
Now that we can, make it use devfs_get_cdevpriv() to obtain the private
data. To remain compatible with the existing implementation, add a
symlink from /dev/bpf0 to /dev/bpf. I've already changed libpcap to
compile with HAVE_CLONING_BPF, which makes it use /dev/bpf. There may be
other applications in the base system (dhclient) that use the loop to
obtain a valid bpf.
Discussed on: src-committers
Approved by: csjp
Revision Changes Path
1.7 +1 -1 src/lib/libpcap/config.h
1.200 +62 -80 src/sys/net/bpf.c
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