[PATCHv2 for-rc 0/6] Bugfixes for send queue overflow by heartbeat

Hi Jason, hi Doug,

Please consider to include following changes to upstream.

This patchset fix a regression since b38041d50add ("RDMA/rtrs: Do not signal for heatbeat").

In commit b38041d50add, the signal flag is droped to fix the send queue full
logic, but introduced a worse bug the send queue overflow on both clt and srv
by heartbeat, sorry.

The patchset is orgnized as:
- patch1 debug patch.
- patch2 preparation.
- patch3 signal both IO and heartbeat.
- patch4 cleanup.
- patch5 cleanup
- patch6 move sq_wr_avail to account send queue full correctly.

The patches are created base v5.14-rc1.

Since v1:
* rebased to latest v5.14-rc1, target rc instread of for-next.

v1: https://lore.kernel.org/linux-rdma/20210629065321.12600-1-jinpu.wang@ionos.com/T/#t (local)

Jack Wang (6):
  RDMA/rtrs: Add error messages for failed operations.
  RDMA/rtrs: move wr_cnt from rtrs_srv_con to rtrs_con
  RDMA/rtrs: Enable the same selective signal for heartbeat and IO
  RDMA/rtrs: Make rtrs_post_rdma_write_imm_empty static
  RDMA/rtrs: Remove unused flags parameter
  RDMA/rtrs: Move sq_wr_avail to rtrs_con

 drivers/infiniband/ulp/rtrs/rtrs-clt.c | 11 ++++++++---
 drivers/infiniband/ulp/rtrs/rtrs-clt.h |  1 -
 drivers/infiniband/ulp/rtrs/rtrs-pri.h |  6 +++---
 drivers/infiniband/ulp/rtrs/rtrs-srv.c | 19 ++++++++++---------
 drivers/infiniband/ulp/rtrs/rtrs-srv.h |  2 --
 drivers/infiniband/ulp/rtrs/rtrs.c     | 23 ++++++++++++++++-------
 6 files changed, 37 insertions(+), 25 deletions(-)

-- 
2.25.1