Date: Mon, 06 Oct 2008 14:04:52 +0800 From: Julian Elischer <julian@elischer.org> To: Ryan French <rfrench@freebsd.org> Cc: freebsd-net@freebsd.org Subject: Re: Getting packets MAC source address in if_ethersubr.c Message-ID: <48E9AA84.90804@elischer.org> In-Reply-To: <200810061730.23641.rfrench@freebsd.org> References: <200810061730.23641.rfrench@freebsd.org>
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Ryan French wrote: > Hi All, > > For my implementation of MPLS I have just about run out of time for my > dissertation so at the moment I am trying to create fake routing table > entries e.t.c. rather than doing this properly (I will be doing this once uni > is finished and I have more free time to work on it). I now have receiving, > decoding and sending of packets working, except for one small problem. When I > send a packet back out the MAC address is wrong. I am looking for a way in > the ether_output function in if_ethersubr.c that I can get the MAC address of > the source of the packet and then just send it back to that source. If anyone > knows how to do this without having to use arpresolve or anything like that > (the IP address of the destination is not going to be the same as the IP > destination in the packet) or without having to setup a proper routing table > then it would be much appreciated. > > Thanks, > -Ryan > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" You could create a tag type that holds a layer 2 address, and attach it to the packet on ingresss, it should stay with the packet as long as it's not destroyed.. then on egress you could find it and use it..
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