Date: Thu, 26 Jul 2001 08:26:42 +1000 From: Peter Jeremy <peter.jeremy@alcatel.com.au> To: Yar Tikhiy <yar@FreeBSD.ORG> Cc: audit@FreeBSD.ORG Subject: Re: vlan(4) manpage Message-ID: <20010726082642.U506@gsmx07.alcatel.com.au> In-Reply-To: <20010725191744.A77305@comp.chem.msu.su>; from yar@FreeBSD.ORG on Wed, Jul 25, 2001 at 07:17:45PM %2B0400 References: <20010725072042.A24573@comp.chem.msu.su> <20010725191744.A77305@comp.chem.msu.su>
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On 2001-Jul-25 19:17:45 +0400, Yar Tikhiy <yar@FreeBSD.ORG> wrote: >.It Xr de 4 >requires defining >.Dv BIG_PACKET >in the >.Pa /usr/src/sys/pci/if_de.c >source file and rebuilding the kernel or the module. According to Donald Becker <becker@scyld.com>, only the later 21143 chip versions, the 21143-TD, support VLAN. It's possible that the BIG_PACKET code handles long packets via a back-door approach that works on (some?) older chips. Note that there isn't a de(4) module in -STABLE. >.It Xr tl 4 >may or may not work with the existing driver. I checked and I'm running a VLAN trunk into the standard -STABLE tl driver, so this driver didn't need any mods. >.It Xr tx 4 >may or may not work with the existing driver. Patches for tx support are in kern/29235 (just submitted). >.It Xr xl 4 >works well only if the card has newer firmware >.Pq 3c905C and above . According to Bill Paul <wpaul@freebsd.org>, the relevant register (MaxPktSize) exists in the 3c905B and later. Note that these are different chips, not just different firmware. And `works well' isn't really specific to the older 3c905's - all the ethernet drivers will support VLANs with a 1496 byte MTU, this list should document those chips/drivers that can handle a 1500 byte MTU in a VLAN trunk (ie support long ethernet frames). Peter To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-audit" in the body of the message
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