From: Bruce Richardson <bruce.richardson@intel.com>
To: John Daley <johndale@cisco.com>
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH 2/4] enic: set the max allowed MTU for the NIC
Date: Fri, 24 Jun 2016 12:01:03 +0100 [thread overview]
Message-ID: <20160624110103.GE13456@bricha3-MOBL3> (raw)
In-Reply-To: <20160624105919.GD13456@bricha3-MOBL3>
On Fri, Jun 24, 2016 at 11:59:19AM +0100, Bruce Richardson wrote:
> On Thu, Jun 16, 2016 at 10:22:47PM -0700, John Daley wrote:
> > The max MTU is set to the max egress packet size allowed by the VIC
> > minus the size of a an IPv4 L2 header with .1Q (18 bytes).
> >
>
> I think a bit more detail might be needed here. For example:
>
> * What was the MTU set to by default before this patch is applied? Was it just
> set to 1518 or something else?
> * What happens, if anything, if buffers bigger than the MTU size are sent down?
This is obviously referring to buffers bigger than MTU on TX. There is also the
question of what happens if buffer sizes smaller than MTU are provided on RX.
>
> /Bruce
next prev parent reply other threads:[~2016-06-24 11:01 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-17 5:22 [dpdk-dev] [PATCH 0/4] enic: enable MTU update callback John Daley
2016-06-17 5:22 ` [dpdk-dev] [PATCH 1/4] enic: enable NIC max packet size discovery John Daley
2016-06-24 10:56 ` Bruce Richardson
2016-06-17 5:22 ` [dpdk-dev] [PATCH 2/4] enic: set the max allowed MTU for the NIC John Daley
2016-06-24 10:59 ` Bruce Richardson
2016-06-24 11:01 ` Bruce Richardson [this message]
2016-06-24 22:29 ` [dpdk-dev] [PATCH v2 1/2] enic: determine max egress packet size and max MTU John Daley
2016-06-24 22:29 ` [dpdk-dev] [PATCH v2 2/2] enic: add an update MTU function for non-Rx scatter mode John Daley
2016-06-29 10:01 ` [dpdk-dev] [PATCH v2 1/2] enic: determine max egress packet size and max MTU Bruce Richardson
2016-06-24 22:42 ` [dpdk-dev] [PATCH 2/4] enic: set the max allowed MTU for the NIC John Daley (johndale)
2016-06-17 5:22 ` [dpdk-dev] [PATCH 3/4] enic: add an update MTU function for non-Rx scatter mode John Daley
2016-06-17 5:22 ` [dpdk-dev] [PATCH 4/4] doc: add MTU update to feature matrix for enic John Daley
2016-06-24 11:01 ` Bruce Richardson
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