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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/
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