Thanks,
Michael
在 2017年5月3日，下午11:28，Kavanagh, Mark B <[email protected]> 写道：
>>
>> Currently, OVS only support DPDK single segment mbuf,
>> it could lead problems, like a large non-DPDK source
>> packet transmit to dpdk port.
>>
>> Also, OVS doesn't copy enough info in mbuf when do
>> packet copy.
>>
>> At the same time, vlan and tunnelling packet's DPDK
>> offloads, for example TSO, needs multi-segment mbuf's
>> support.
>>
>> This patchset solved all above issues.
>
> Hi Michael,
>
> Thanks for this patch - I'm also working in this area currently, and have an
> RFC patch that builds on your work.
>
> I'm interested in the NIC that you used in testing this patchset -
> specifically, the related TX callback function that was used. The reason I
> ask is that vectorized Tx functions are typically incompatible with
> multi-segment mbufs, due to their scatter-gather (i.e. non-contiguous)
> nature, although this may vary from PMD to PMD.
>
The NIC we used is Intel xl710, and you are right, vectorized TX doesn't
support this. Because we use hw offloading, but vector pmd doest not support
offloading as I know. If offloading is configured, pmds will not use vector.
> Finally, this patch doesn't provide support for multi-segment jumbo frames
> that
If a packet is multi-seg, doesn't it be a jumbo frame in current ovs?
> originate from a DPDK source - I'll post an RFC patch on this tomorrow, and I
> would be grateful if you could review same!
>
> Thanks again,
> Mark
>
>
>
>
>>
>> --
>> v1 --> v2
>> rebase code to newest upstream.
>> fix some typo in commit log.
>>
>> Michael Qiu (5):
>> lib/dp-packet: init the mbuf to zero when build with DPDK
>> lib/dp-packet: copy additional packet info when do packet copy
>> lib/dp-packet: Fix data_len issue with multi-segments
>> lib/dp-packet: copy multi-segments data from DPDK mbuf
>> lib/netdev-dpdk: copy large packet to multi-segment mbufs
>>
>> lib/dp-packet.c | 33 ++++++++++++++++++++++++++++++---
>> lib/dp-packet.h | 23 +++++++++++++----------
>> lib/netdev-dpdk.c | 55
>> +++++++++++++++++++++++++++++++++++++++++++++++++++----
>> 3 files changed, 94 insertions(+), 17 deletions(-)
>>
>> --
>> 1.8.3.1
>
> _______________________________________________
> dev mailing list
> [email protected]
> https://mail.openvswitch.org/mailman/listinfo/ovs-dev
_______________________________________________
dev mailing list
[email protected]
https://mail.openvswitch.org/mailman/listinfo/ovs-dev
