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From: Ferruh Yigit <ferruh.yigit@intel.com>
To: Ian Stokes <ian.stokes@intel.com>, dev@dpdk.org
Cc: stephen@networkplumber.org, Thomas Monjalon <thomas@monjalon.net>,
	Andrew Rybchenko <arybchenko@solarflare.com>
Subject: Re: [dpdk-dev] [PATCH v1 0/6] ethdev: add min/max MTU to device info
Date: Fri, 22 Mar 2019 14:08:18 +0000	[thread overview]
Message-ID: <a4f92851-7bd2-066c-9e13-8cb317fe6fd7@intel.com> (raw)
Message-ID: <20190322140818.rcJzxqD0NQEaUGRMlXn3tu7ixDg6kNKYUfY5C0MvGFM@z> (raw)
In-Reply-To: <1cce752b-09e4-abf1-3f1e-3afc6a4418fe@intel.com>

On 3/22/2019 1:05 PM, Ian Stokes wrote:
> On 3/21/2019 1:03 PM, Ian Stokes wrote:
>> On 3/19/2019 4:30 PM, Ferruh Yigit wrote:
>>> On 2/27/2019 9:45 PM, Ian Stokes wrote:
>>>> Building upon the discussion around [1], this series introduces MTU min
>>>> and MTU max variables. It also provides updates to PMD implementations
>>>> for ixgbe, i40e and IGB devices so that these variables are populated
>>>> for use when retrieving device info.
>>>>
>>>> This series was tested with OVS DPDK and functions as expected for the
>>>> drivers listed below. But a wider selection of PMD drivers would have to
>>>> adopt this to ensure jumbo frames functionality remains for drivers not
>>>> modified in the series.
>>>>
>>>> There is also ongoing discussion in [2] regarding overhead to be
>>>> considered with MTU and how this may change from device to device, this
>>>> series uses existing overhead assumptions.
>>>>
>>>> This series was previously posted as an RFC in [3], this revision
>>>> removes RFC status and implements changes received in feedback.
>>>>
>>>> [1] http://mails.dpdk.org/archives/dev/2018-September/110959.html
>>>> [2] http://mails.dpdk.org/archives/dev/2019-February/124457.html
>>>> [3] http://mails.dpdk.org/archives/dev/2019-February/124938.html
>>>>
>>>> Ian Stokes (5):
>>>>    net/i40e: set min and max MTU for i40e devices
>>>>    net/i40e: set min and max MTU for i40e VF devices
>>>>    net/ixgbe: set min and max MTU for ixgbe devices
>>>>    net/ixgbe: set min and max MTU for ixgbe VF devices
>>>>    net/e1000: set min and max MTU for igb devices
>>>>
>>>> Stephen Hemminger (1):
>>>>    ethdev: add min/max MTU to device info
>>>
>>> Hi Ian, Stephen,
>>>
>>> API and driver updates are included in the patchset, but I believe it 
>>> would be
>>> good to have some application code that uses it as well, I assume testpmd
>>> already has some code to set MTU, can you please update it too 
>>> accordingly?
>>>
>>
>> Thanks Ferruh, sure I had looked at this but held off in the v1 as I 
>> wasn't sure what best practice was, i.e.  introduce the change to sample 
>> app now or wait unitl all PMDs were on board. If it's preferred to 
>> introduce usage in a sample app then I can do this in the v2.
>>
>>> Also, what do you think starting a unit test (which has a long term 
>>> target to
>>> verify all ethdev APIs) that tests 'rte_eth_dev_set_mtu()' API with 
>>> various values?
>>>
>>
>> Sounds useful, I can take a look for the v2, first steps  might be basic 
>> but can look into it.
>>
>> Ian
>>> In long term all vendors can run this unit test against their HW and 
>>> verify
>>> ehtdev API implementation of their...
>>>
>>
> 
> Hi Ferruh,
> 
> I've posted a v2 of the patchset based on the feedback.
> 
> http://mails.dpdk.org/archives/dev/2019-March/127344.html
> 
> Unfortunately I did not have time to look at implementing the unit test 
> aspect. I don't think I'll have the bandwidth before the rc1 window next 
> week to implement this aspect but would be happy to look at it possibly 
> in the next 19.08 release if this is acceptable, is the unit test a 
> blocker for the rest of this work?

Thanks for checking it, I believe it is not a blocker but I thought it may be a
good start for verifying ethdev APIs, we can pursue this goal later.

  parent reply	other threads:[~2019-03-22 14:08 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-27 21:45 Ian Stokes
2019-02-27 21:45 ` [dpdk-dev] [PATCH v1 1/6] " Ian Stokes
2019-03-19 16:15   ` Ferruh Yigit
2019-03-19 16:15     ` Ferruh Yigit
2019-03-21 12:50     ` Ian Stokes
2019-03-21 12:50       ` Ian Stokes
2019-03-21 14:06       ` Ferruh Yigit
2019-03-21 14:06         ` Ferruh Yigit
2019-03-21 14:59         ` Ian Stokes
2019-03-21 14:59           ` Ian Stokes
2019-02-27 21:45 ` [dpdk-dev] [PATCH v1 2/6] net/i40e: set min and max MTU for i40e devices Ian Stokes
2019-03-19 16:18   ` Ferruh Yigit
2019-03-19 16:18     ` Ferruh Yigit
2019-03-21 12:57     ` Ian Stokes
2019-03-21 12:57       ` Ian Stokes
2019-02-27 21:45 ` [dpdk-dev] [PATCH v1 3/6] net/i40e: set min and max MTU for i40e VF devices Ian Stokes
2019-02-27 21:45 ` [dpdk-dev] [PATCH v1 4/6] net/ixgbe: set min and max MTU for ixgbe devices Ian Stokes
2019-02-27 21:45 ` [dpdk-dev] [PATCH v1 5/6] net/ixgbe: set min and max MTU for ixgbe VF devices Ian Stokes
2019-02-27 21:45 ` [dpdk-dev] [PATCH v1 6/6] net/e1000: set min and max MTU for igb devices Ian Stokes
2019-03-19 16:30 ` [dpdk-dev] [PATCH v1 0/6] ethdev: add min/max MTU to device info Ferruh Yigit
2019-03-19 16:30   ` Ferruh Yigit
2019-03-21 13:03   ` Ian Stokes
2019-03-21 13:03     ` Ian Stokes
2019-03-22 13:05     ` Ian Stokes
2019-03-22 13:05       ` Ian Stokes
2019-03-22 14:08       ` Ferruh Yigit [this message]
2019-03-22 14:08         ` Ferruh Yigit

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