linux-kernel - Re: [PATCH net-next] hyperv: Add processing of MTU reduced by the host

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20141112.150423.1660890641226643870.davem@davemloft.net>
Date:	Wed, 12 Nov 2014 15:04:23 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	haiyangz@...rosoft.com
Cc:	netdev@...r.kernel.org, kys@...rosoft.com, olaf@...fle.de,
	jasowang@...hat.com, linux-kernel@...r.kernel.org,
	driverdev-devel@...uxdriverproject.org
Subject: Re: [PATCH net-next] hyperv: Add processing of MTU reduced by the
 host

From: Haiyang Zhang <haiyangz@...rosoft.com>
Date: Wed, 12 Nov 2014 20:02:11 +0000

> The Hyper-V host doesn't support MTU below 1500. If we try setting MTU to a 
> value < 1500, the host will use 1500 automatically and return 1500 in the 
> RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE query and guest will also use it. That's 
> why I set the lower limit to ETH_DATA_LEN.
> 
> Are you suggesting that we keep the 68 as the lower limit, and let the host 
> auto-reset it to 1500 when we trying to set an MTU < 1500?

Then you need to add a comment, because without any information or
context that change looks wrong.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/