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| author | ed <ed@FreeBSD.org> | 2008-08-13 15:41:21 +0000 |
|---|---|---|
| committer | ed <ed@FreeBSD.org> | 2008-08-13 15:41:21 +0000 |
| commit | c392c350356d4e10651d40ed2906f1c9f50d789e (patch) | |
| tree | 1e922da37e301531803c58fc0415966f29b6a5bd /lib | |
| parent | 1a091133592a52542225ae632b0ecdfa2b068da7 (diff) | |
| download | FreeBSD-src-c392c350356d4e10651d40ed2906f1c9f50d789e.zip FreeBSD-src-c392c350356d4e10651d40ed2906f1c9f50d789e.tar.gz | |
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
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/libpcap/config.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/libpcap/config.h b/lib/libpcap/config.h index a96d891..78bb0db 100644 --- a/lib/libpcap/config.h +++ b/lib/libpcap/config.h @@ -15,7 +15,7 @@ /* #undef BDEBUG */ /* define if you have a cloning BPF device */ -/* #undef HAVE_CLONING_BPF */ +#define HAVE_CLONING_BPF 1 /* define if you have the DAG API */ /* #undef HAVE_DAG_API */ |
