From: Bruce Richardson <bruce.richardson@intel.com>
To: "Coulson, Ken" <kcoulson@ciena.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>, "users@dpdk.org" <users@dpdk.org>
Subject: Re: [dpdk-users] [dpdk-dev] Question about driver/controller MTU enforcement with MTU less than jumbo frame size
Date: Wed, 10 May 2017 09:36:59 +0100 [thread overview]
Message-ID: <20170510083659.GA5268@bricha3-MOBL3.ger.corp.intel.com> (raw)
In-Reply-To: <D5377C6E.251BB%kcoulson@ciena.com>
On Tue, May 09, 2017 at 09:02:24PM +0000, Coulson, Ken wrote:
> Is it possible to have an MTU enforced on rx that is less than jumbo size frames?
> From the DPDK driver code snippet for ixgbe if MTU < 1518 then the jumbo_frame control bit in the chip is set to 0.
> The controller manual says the maximum frame size is only meaningful when the jumbo_frame control bit is 1.
> Does it work to leave jumbo_frame set to 1 but set max frame size to something smaller than the jumbo size of 1518?
>
I believe it should work, but I haven't ever tested it to confirm.
/Bruce
prev parent reply other threads:[~2017-05-10 8:37 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-09 21:02 [dpdk-users] " Coulson, Ken
2017-05-10 8:36 ` Bruce Richardson [this message]
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