[PATCH for-next 0/2] RDMA/erdma: Introduce custom implementation of drain_sq and drain_rq

[Cheng Xu <chengyou@linux.alibaba.com>]

Hi,

This series introduces erdma's implementation of drain_sq and drain_rq.
Our hardware will stop processing any new WRs if QP state is error.
So the default __ib_drain_sq and __ib_drain_rq in core code can not work
for erdma. For this reason, we implement the drain_sq and drain_rq
interfaces.

In SQ draining or RQ draining, we post both drain send wr and drain
recv wr, and then modify_qp to error. At last, we wait the corresponding
completion in the separated interface.

The first patch introduces internal post_send/post_recv for qp drain, and
the second patch implements the drain_sq and drain_rq of erdma.

Thanks,
Cheng Xu

Cheng Xu (2):
  RDMA/erdma: Introduce internal post_send/post_recv for qp drain
  RDMA/erdma: Add drain_sq and drain_rq support

 drivers/infiniband/hw/erdma/erdma_main.c  |   4 +-
 drivers/infiniband/hw/erdma/erdma_qp.c    | 116 +++++++++++++++++++++-
 drivers/infiniband/hw/erdma/erdma_verbs.h |  27 ++++-
 3 files changed, 136 insertions(+), 11 deletions(-)

-- 
2.27.0