Date: Mon, 5 May 1997 17:44:52 -0700 (PDT) From: Archie Cobbs <archie@whistle.com> To: avalon@coombs.anu.edu.au (Darren Reed) Cc: nnd@info.itfs.nsk.su, current@freebsd.org, hackers@freebsd.org Subject: Re: divert still broken? Message-ID: <199705060044.RAA10251@bubba.whistle.com> In-Reply-To: <199705060032.RAA16250@gatekeeper.whistle.com> from Darren Reed at "May 6, 97 10:30:29 am"
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> > - Simplify the ip_fw_chk() function call interface > > well, the list of things which you must pass are: > * pointer to a pointer to an mbuf (ip_fw_chk() may want to modify it - e.g. > calls m_pullup) Keeping this... > * interface (m_rcvif is often NULL in ip_output, besides which setting it > in ip_output is semantically incorrect) > * value indicating whether it is being called from ip_input or ip_output Changing this.. m_rcvif is NULL if-and-only-if there is no receive interface associated with the packet. Also, you'll noticed that the call from ip_input() just sets this parameter to m_rcvif from the packet. So these two arguments are being replaced by a single argument with is the output interface... which is NULL if-and-only-if the direction of the packet is incoming. > - that's the *must have* list. Convienience parameters are: > * pointer to the IP header > * precomputed real IP header length (from ip_hl) Keeping... -Archie ___________________________________________________________________________ Archie Cobbs * Whistle Communications, Inc. * http://www.whistle.com
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