[dpdk-stable] [PATCH 19.11.6 00/13] backport for 19.11.6

[oulijun]

在 2020/11/23 23:52, Luca Boccassi 写道:
> On Fri, 2020-11-13 at 21:36 +0800, Lijun Ou wrote:
>> Hi, Luca Boccassi
>> His series are backport for 19.11.6 about hns3 PMD driver
>> I also noticed that you gave Hu Wei a suggestion on the 19.11.4
>> backport. You did not recommend adding new features. I reselected
>> the TSO and some performance optimization patch request backports.
>> The reason I do this is that I think TSO is also a performance
>> optimization point, including other fixes. In addition, if TSO
>> is not integrated, the bug fixes of the cksum may not be integrated,
>> which will cause the stability of the cksum function.
>>
>> Chengchang Tang (5):
>>    net/hns3: support promiscuous and allmulticast mode for VF
>>    net/hns3: decrease non-nearby memory access in Rx
>>    net/hns3: cleanup duplicated code on processing TSO in Tx
>>    net/hns3: fix Tx checksum outer header prepare
>>    net/hns3: fix Tx checksum with fixed header length
>>
>> Hongbo Zheng (1):
>>    net/hns3: check TSO segment size during Tx
>>
>> Lijun Ou (2):
>>    net/hns3: support TSO
>>    net/hns3: report Tx descriptor segment limitations
>>
>> Wei Hu (Xavier) (5):
>>    net/hns3: fix reassembling multiple segment packets in Tx
>>    net/hns3: fix inserted VLAN tag position in Tx
>>    net/hns3: report Rx drop packets enable configuration
>>    net/hns3: report Rx free threshold
>>    net/hns3: reduce address calculation in Rx
>>
>>   doc/guides/nics/features/hns3.ini    |   1 +
>>   doc/guides/nics/features/hns3_vf.ini |   3 +
>>   doc/guides/nics/hns3.rst             |   1 +
>>   drivers/net/hns3/hns3_ethdev.c       |  38 +-
>>   drivers/net/hns3/hns3_ethdev.h       |  37 +-
>>   drivers/net/hns3/hns3_ethdev_vf.c    | 134 ++++++-
>>   drivers/net/hns3/hns3_mbx.c          |  23 ++
>>   drivers/net/hns3/hns3_mbx.h          |   2 +
>>   drivers/net/hns3/hns3_rxtx.c         | 666 ++++++++++++++++++++++++-----------
>>   drivers/net/hns3/hns3_rxtx.h         |  31 +-
>>   10 files changed, 720 insertions(+), 216 deletions(-)
> 
> Hi,
> 
> I discussed this proposal with other maintainers, and I'm afraid the
> original answer still stands - we feel backporting an entire new
> offload is too much for the scope of an LTS release.
> 
> While sometimes we do allow for some featurettes to be backported, in
> the form of a new #define or such small changes, there was consensus
> that a 936 lines diff is too much churn for what is expected from a
> stable release, which is stability. The risk of introducing new bugs,
> especially in face of the fact that we never had regression tests
> coverage for the hns3 PMD for LTSes before, is too high.
> 
> The 20.05/20.08 releases are ABI compatible with 19.11, so if there's
> an urgent need for this feature in users of the hns3 PMD, one of those
> can be used instead. Some other companies also maintain downstream
> trees of the LTSes with invasive changes to their PMDs, that are deemed
> too risky for the upstream tree, so that's another option available to
> you.
> 
> Sorry!
> 
I see. Can I re-split the bugfix of the TSO part based on the patch and 
return it to you?

Thanks
Lijun Ou