[v4,0/3] RDMA/rxe: Fix no completion event issue

Message

Zhijian Li (Fujitsu) July 1, 2022, 6:10 a.m. UTC

It's observed that no more completion occurs after a few incorrect posts.
Actually, it will block the polling. we can easily reproduce it by the below
pattern.

a. post correct RDMA_WRITE
b. poll completion event
while true {
  c. post incorrect RDMA_WRITE(wrong rkey for example)
  d. poll completion event <<<< block after 2 incorrect RDMA_WRITE posts
}

V4 add new patch from Bob where it make requester stop executing qp
operation as soon as possible.

Both blktests and pyverbs tests are passed fine.

Bob Pearson (1):
  RDMA/rxe: Split qp state for requester and completer

Li Zhijian (2):
  RDMA/rxe: Update wqe_index for each wqe error completion
  RDMA/rxe: Generate error completion for error requester QP state

 drivers/infiniband/sw/rxe/rxe_comp.c  |  6 +++---
 drivers/infiniband/sw/rxe/rxe_qp.c    |  5 +++++
 drivers/infiniband/sw/rxe/rxe_req.c   | 18 +++++++++++++++++-
 drivers/infiniband/sw/rxe/rxe_verbs.h |  1 +
 4 files changed, 26 insertions(+), 4 deletions(-)