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SubjectRe: [PATCH net-next] hyperv: Add processing of MTU reduced by the host
From: Haiyang Zhang <>
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.

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