Date: Mon, 11 Jun 2001 17:22:22 -0500 (CDT) From: Jonathan Lemon <jlemon@flugsvamp.com> To: bright@rush.net, net@freebsd.org Subject: Re: finding ifp from inpcb Message-ID: <200106112222.f5BMMMB05570@prism.flugsvamp.com> In-Reply-To: <local.mail.freebsd-net/20010611163307.O1832@superconductor.rush.net>
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In article <local.mail.freebsd-net/20010611163307.O1832@superconductor.rush.net> you write:
>If I have an inpcb and an packet what's the best way to send
>out the packet via the inpcb's interface? I think I want to
>call ether_output_frame, but I can't figure out how to get
>the ifp from the inpcb.
PCB's don't have interfaces, but (depending on the protocol), they
may have routes. For TCP, for example, you may be able to use the
cached route in the PCB (if it exists) in order to send the packet:
struct tcpcb *tp;
struct route *ro;
ro = &tp->t_inpcb->inp_route;
ip_output(m, NULL, ro, ipflags, NULL);
--
Jonathan
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