Re: [PATCH v1 0/6] Last WQE Reached event treatment

[Zhu Yanjun <yanjun.zhu@linux.dev>]

在 2024/6/18 8:10, Max Gurtovoy 写道:
> Hi Jason/Leon/Sagi,
> 
> This series adds a support for draining a QP that is associated with a
> SRQ (Shared Receive Queue).
> Leakage problem can occur if we won't treat Last WQE Reached event.
> 
> In the series, that is based on some old series I've send during 2018, I

The old series is as below. It had better to post the link.

https://www.spinics.net/lists/linux-rdma/msg59633.html

Zhu Yanjun

> used a different approach and handled the event in the RDMA core, as was
> suggested in discussion in the mailing list.
> 
> I've updated RDMA ULPs. Most of them were trivial except IPoIB that was
> handling the Last WQE reached in the ULP.
> 
> I've tested this series with NVMf/RDMA on RoCE.
> 
> Max Gurtovoy (6):
>    IB/core: add support for draining Shared receive queues
>    IB/isert: remove the handling of last WQE reached event
>    RDMA/srpt: remove the handling of last WQE reached event
>    nvmet-rdma: remove the handling of last WQE reached event
>    svcrdma: remove the handling of last WQE reached event
>    RDMA/IPoIB: remove the handling of last WQE reached event
> 
>   drivers/infiniband/core/verbs.c          | 83 +++++++++++++++++++++++-
>   drivers/infiniband/ulp/ipoib/ipoib.h     | 33 +---------
>   drivers/infiniband/ulp/ipoib/ipoib_cm.c  | 71 ++------------------
>   drivers/infiniband/ulp/isert/ib_isert.c  |  3 -
>   drivers/infiniband/ulp/srpt/ib_srpt.c    |  5 --
>   drivers/nvme/target/rdma.c               |  4 --
>   include/rdma/ib_verbs.h                  |  2 +
>   net/sunrpc/xprtrdma/svc_rdma_transport.c |  1 -
>   8 files changed, 92 insertions(+), 110 deletions(-)
>