RDMA/iw_cxgb4: Handle ULP accept/reject during ABORTING
c4iw_reject() and c4iw_accept() need to handle the case where the
endpoint has timed out and is in the middle of ABORTING the connection.
Here is the flow that causes the BUG_ON() to fire on the server side:
1) offload connection setup and endpoint timer started
2) MPA_START request received from peer, CONNECT_REQUEST passed to ULP
3) endpoint timer fires, and process_timeout() aborts the connection,
this moves the endpoint state to ABORTING until HW sends up the
ABORT_RPL_RSS.
4) application exits closing the CONNECT_REQUEST cm_id. The IWCM calls
c4iw_reject_cr() to destroy this connection request.
5) WHAMO: BUG_ON() because the state is ABORTING.
The fix is to change c4iw_reject_cr() and c4iw_accept_cr() to fail the
operation if the state is not in MPA_REQ_RCVD vs in DEAD.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
1 file changed