Date: Thu, 23 Oct 2003 09:08:55 -0700 From: Jerry Toung <jtoung@arc.nasa.gov> To: freebsd-hackers@freebsd.org Subject: pseudo-driver (*pr_input) Message-ID: <200310230908.55464.jtoung@arc.nasa.gov>
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Good morning hackers,
I am writing a pseudo driver for a routing protocol that insert its header
after the ip header. I call it TTT. On the output after ip_output, for
packets destined to a particular subnet I go through the ttt0 virtual
interface calling ttt_output.
In ttt_input all I have is a printf statement to make sure that it is being
called. tcpdump on the physical interface shows those packets getting in as a
result of a ping from 243.10.1.1, but I don't see in the /var/log/messages
what should be printed by ttt_input. I use 2 machines connected back to back
with a crossover cable.
tcpdump: listening on fxp0
16:11:15.398205 243.10.1.1 > 243.10.1.2: ip-proto-110 91
16:11:16.408227 243.10.1.1 > 243.10.1.2: ip-proto-110 91
.........................................
in if_ttt.c I have this to support calls to ttt_input
extern struct domain inetdomain;
static const struct protosw in_ttt_protosw =
{ SOCK_RAW, &inetdomain, IPPROTO_TTT, PR_ATOMIC|PR_ADDR,
(pr_input_t*)ttt_input, (pr_output_t*)rip_output, rip_ctlinput,
rip_ctloutput, 0, 0, 0, 0, 0,
&rip_usrreqs,
};
and in
static int ttt_clone_create(struct if_clone *ifc, int unit)
{
............
sc->encap_cookie = encap_attach_func(AF_INET, IPPROTO_TTT,
ttt_encapcheck, &in_ttt_protosw, sc);
............
}
sorry for the long post, but if somebody can tell me what I am missing I'll
appreciate.
thank you,
Jerry.
help
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