Date: Sat, 13 Nov 2004 10:36:37 -0500 From: Josh Coombs <kurlon@gwi.net> To: freebsd-net@freebsd.org Subject: Netgraph node with inet and ethernet hooks? Message-ID: <CE8F4C4A-3589-11D9-98D1-00039348130C@gwi.net>
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I'm trying to find a way to get PPPoE half-bridging functionality working with FreeBSD, similar to what Cisco routers and many older ISDN routers can/could do. Basically, I'm trying to get the ip/subnet assigned to the ppp link usable on an ethernet interface. So, on the radius side, you have (format is off, I know...) user dsluser, prefix=P fixed-address = 10.0.0.1 fixed-netmask = 255.255.255.0 Normally, when mpd connects up, 10.0.0.1 will be assigned with a /32 netmask to ng0 or whatever netgraph iface node is created for the job. Warning, bad ascii table: +-----+ |xl1 | |ether| | | +-----+ |orphans | ethernet| +--------+ |0000000b| |pppoe | | | +--------+ |mpd983_pppoe | link0 | +--------+ +------------+ +--------+ |00000005|bypass |mpd983_pppoe|VJC Support |00000009| |socket |-------|00000007 |------------|vjc | | | bypass|ppp | VJC Support| | +--------+ +------------+ +--------+ |demand |inet | | | ppp| | +--------+ | |00000008| |--------------|bpf | mpd| | +--------+ |iface | inet| +--------+ |ng0 | |00000006| |iface | +--------+ Having spent a couple nights trying to get myself up to speed with netgraph, it seems if I can get a node that takes inet (ip) in, and spits out ethernet, I can then attach from the bpf node direct to an existing ethernet interface. Looking around, I can't find a node type that accomplishes this. Does such a connector exist? If not, is the closest logical option to stick a ng_socket between the bpf and ethernet nodes, and do the ethernet [en,de]capsulation in userland? Joshua Coombs
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