Date: Sun, 31 Jan 1999 05:51:36 -0800 (PST) From: Julian Elischer <julian@whistle.com> To: net@FreeBSD.ORG Cc: Archie Cobbs <archie@whistle.com> Subject: Patch to add Netgraph to all ethernet interfaces. Message-ID: <Pine.BSF.3.95.990131055031.22411A-200000@current1.whistle.com>
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This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. Send mail to mime@docserver.cac.washington.edu for more info. --0-512676918-917790696=:22411 Content-Type: TEXT/PLAIN; charset=US-ASCII Here is a patch that adds a netgraph node capability to any ethernet driver. (compiles cleanly but I can't test it till tomrrow) you may attach a hook on either "orphan" or "divert" (but not both) An example of how one might attach a netgraph 'face' to an existing kernel facility. If there is a hook attached to "orphan" then any packets of any unrecognised protocol will be forwarded to the hook. If attached to "divert" then ALL packets will be forwarded (and not processed normally). I added the "divert" option for fun (it was 3 lines or so) but you probably don't want it in the final product as it probably adds about 6 instructions to the path of normal IP packets Any packets sent to the hook from another netgraph node are transmitted verbatim (i.e. they are assumed to have the ethernet header on them) now if I wrote a node to filter ethernet packets dynamically using DPF I could add protocols on the fly. I've been wondering about the following node types.. DPF (dynamic Packet Filter.. super high speed packet sorter) ipfw clone link-level packet filter link-level bridging julian --0-512676918-917790696=:22411 Content-Type: TEXT/PLAIN; charset=US-ASCII; name="ether.diff" Content-Transfer-Encoding: BASE64 Content-ID: <Pine.BSF.3.95.990131055136.22411B@current1.whistle.com> Content-Description: SW5kZXg6IGlmX2FycC5oDQo9PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09DQpSQ1Mg ZmlsZTogL2N2cy9mcmVlYnNkL3NyYy9zeXMvbmV0L2lmX2FycC5oLHYNCnJl dHJpZXZpbmcgcmV2aXNpb24gMS4xMA0KZGlmZiAtYyAtcjEuMTAgaWZfYXJw LmgNCioqKiBpZl9hcnAuaAkxOTk4LzAxLzEwIDA3OjI5OjEwCTEuMTANCi0t LSBpZl9hcnAuaAkxOTk5LzAxLzMxIDEzOjI2OjU4DQoqKioqKioqKioqKioq KioNCioqKiAxMDEsMTA2ICoqKioNCi0tLSAxMDEsMTA5IC0tLS0NCiAgCXN0 cnVjdCAJaWZuZXQgYWNfaWY7CQkvKiBuZXR3b3JrLXZpc2libGUgaW50ZXJm YWNlICovDQogIAl1X2NoYXIJYWNfZW5hZGRyWzZdOwkJLyogZXRoZXJuZXQg aGFyZHdhcmUgYWRkcmVzcyAqLw0KICAJaW50CWFjX211bHRpY250OwkJLyog 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