Date: Tue, 6 Oct 1998 17:34:57 -0700 (PDT) From: Archie Cobbs <archie@whistle.com> To: crossd@null.cs.rpi.edu (David E. Cross) Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: GRE support in FreeBSD? Message-ID: <199810070034.RAA07525@bubba.whistle.com> In-Reply-To: <Pine.SGI.4.04.9810061533400.3218-100000@null.cs.rpi.edu> from "David E. Cross" at "Oct 6, 98 03:34:40 pm"
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David E. Cross writes: > > > > What would be required to add GRE support (IP Protocol 47, RFC > > > > 1701,1702) to FreeBSD? > > > > > > Ask archie@whistle.com, since he's already done it. > > > > > > Alternatively, look at one of the two IPSEC implementations for > > > FreeBSD, as announced on -current. > > > > Actually I just opened a raw socket: > > > > s = socket(PF_INET, SOCK_RAW, IPPROTO_GRE); > > > > and sniffed out the sub-protocol number I was looking for in > > user-land. > > > > Alternately you could have the kernel do the (de)multiplexing by > > adding a block for IPPROTO_GRE to /sys/netinet/in_proto.c and > > adding the necessary socket stuff. > Yes, I am currently doing it in userland, I was referring to adding it > into the kernel. Well, to answer your original question, take a look in /sys/netinet and the example of IPDIVERT (or IPIP, or..) - in_proto.c: add to protosw - ip_divert.c: add your socket routines Etc.. -Archie ___________________________________________________________________________ Archie Cobbs * Whistle Communications, Inc. * http://www.whistle.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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