It is possible for requests waiting for R2T ACK to receive H2C PDU
before receiving the ACK. Therefore, the following sequence:
1. Host sends a write request to the target.
2. Target sends R2T PDU to the host and sets request's state to
AWAITING_R2T_ACK.
3. Host sends H2C PDU to the target, but it doesn't reach the target
yet.
3. Host sends an abort command to abort that request. Request's state
is changed to READY_TO_COMPLETE.
4. Target receives the H2C PDU, sees that request's state is
READY_TO_COMPLETE, which is unexpected, and terminates the
connection.
will cause the target to terminate the connection, which is obviously
incorrect.
So, to avoid that, we can treat AWAITING_R2T_ACK state in the same way
as TRANSFERRING_HOST_TO_CONTROLLER and register a poller waiting for the
state to be changed.
Fixes#2789.
Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Change-Id: Idddc627050000b74663dba397dc14d10aa0e284f
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/16641
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@nvidia.com>
b12419a231