Date: Sat, 2 May 1998 16:04:25 +0200 (CEST) From: hm@kts.org (Hellmuth Michaelis) To: freebsd-hackers@FreeBSD.ORG (FreeBSD Hackers) Subject: bpf needs in network drivers Message-ID: <m0yVctt-00024SC@bert.kts.org>
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Hi,
in case i do a
bpfattach(&sc->sc_if, DLT_NULL, sizeof(u_int));
in a network (IP over ISDN, not PPP!) device driver, i obviously have to
prepend sizeof(u_int) to each mbuf i sent to bpf, is this correct ?
What do i have to put into this sizeof(u_int) (for bpf/tcpdump) ?
Is it possible to do a
bpfattach(&sc->sc_if, DLT_NULL, 0);
and prepend nothing ?
hellmuth
--
Hellmuth Michaelis hm@kts.org Hamburg, Europe
"Those who can, do. Those who can't, talk.
And those who can't talk, talk about talking." (B. Shaw)
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