[+cc DPDK jianfeng]
For the gap, is it been fixed by below commit?
commit c59faf3fe8fe6dbd99e8cd9d703839728264c5ae
Author: Jianfeng Tan <jianfeng....@intel.com>
Date: Mon Aug 1 03:56:54 2016 +0000
net/i40e: support TSO on tunneling packet
I just tested your vlan patch, the same thing happens as vxlan tunnel TSO.
BTW, the workaround is in DPDK or in OVS? Any more details?
2016/10/18 0:00, Kavanagh, Mark B :
OK, Thanks for your info.
BTW, you mentioned the gap, is it the tunneling tso can't work correctly for
multi-segments
mbuf, and after some packets, guest is unable to xmit packets(dpdk driver
failed to work any
more)?
At the time, the gap was that the tunnel header was not replicated across all
of the NIC-fragmented frames; that has been resolved now in DPDK.
However, while testing with TSO with single-tagged VLAN frames, I see something
similar to what you describe. I currently have a workaround, but want to do a
bit more digging before I report out on it.
Thanks,
Mark
Thanks,
Michael
2016年10月14日，下午5:15，Kavanagh, Mark B <mark.b.kavan...@intel.com> ：
Hi, Mark
OK, once it's ready， pls let me know and I'm glade to help to test it.
BTW， you mentioned the gap, is that the TSO and CSUM of tunnel offload?
I'm familiar with it, and I hope I could do something on it if possible.
Yes, that's what it was.
Commits have recently been introduced to DPDK that introduce additional flags
for tunnel
offloading, but I haven't had a chance to test them with in my TSO+VxLAN
codebase.
Thanks,
Mark
2016/10/11 22:34, Kavanagh, Mark B :
Hi, all
This patch is very important for users want to improve the performance
of the large packets.
But you know, in data center, lots of networks using vxlan, so if it
supports vxlan, then it will be very useful.
Would you guys has a plan to support it? I would like to help test it,
or work together on it?
Hi Michael,
Some work has already been done to enable TSO over VxLAN, but it was blocked
until
recently, on account of gaps in the DPKD i40e PMD's support for tunnel offload.
We believe that those gaps have now been addressed; our current focus is on
ironing out
the
issues in TSO support over flat and VLAN networks - once that's done, we plan
to resume
work
on VxLAN support (and GRE, IPinIP).
Hope this helps,
Mark
--
Thanks,
Michael
--
Thanks,
Michael
--
Thanks,
Michael
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