Date: Wed, 21 Jun 2000 06:38:45 +0200 (CEST) From: Luigi Rizzo <luigi@info.iet.unipi.it> To: "C. Stephen Gunn" <csg@waterspout.com> Cc: Julian Elischer <julian@elischer.org>, Tarik Alj <aljtarik@cholla.inrs-telecom.uquebec.ca>, archie@whistle.com, gregoire@cholla.inrs-telecom.uquebec.ca, "Vitaly V. Belekhov" <vitaly@riss-telecom.ru>, net@FreeBSD.ORG Subject: Re: bridge + VLAN + netgraph Message-ID: <200006210438.GAA04059@info.iet.unipi.it> In-Reply-To: <20000620233346.B1128@waterspout.com> from "C. Stephen Gunn" at "Jun 20, 2000 11:33:46 pm"
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> - Since VLANs shove another 4-byte field in the Ethernet Frame, > we bump the MTU by 4 bytes. Some cards/drivers reject frames actually we should bump up not the MTU, but the max acceptable frame size in the device driver. I think most interfaces will accept the change just fine, it's just really boring to look after all interfaces and fix the initialization of the card. > We could then modify ether_input() to take the full mbuf, including > the headers (like NetBSD). Drivers that want/need to optimize I already suggested that, but no luck :( cheers luigi -----------------------------------+------------------------------------- Luigi RIZZO, luigi@iet.unipi.it . Dip. di Ing. dell'Informazione http://www.iet.unipi.it/~luigi/ . Universita` di Pisa TEL/FAX: +39-050-568.533/522 . via Diotisalvi 2, 56126 PISA (Italy) Mobile +39-347-0373137 -----------------------------------+------------------------------------- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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