Commit 6b87dd80 authored by Seth Howell's avatar Seth Howell Committed by Tomasz Zawadzki
Browse files

nvme_rdma: Detect stale connection failures. 



This is the first step in properly reconnecting after a hard power off
event.

Change-Id: I9739bffacd66ec6d9f8f1d376bf42291c84f90f2
Signed-off-by: default avatarSeth Howell <seth.howell@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/473061


Tested-by: default avatarSPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: default avatarBen Walker <benjamin.walker@intel.com>
Reviewed-by: default avatarShuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: default avatarJim Harris <james.r.harris@intel.com>
parent 208fbb67

lib/nvme/nvme_rdma.c

+15 −0
Original line number Diff line number Diff line
@@ -362,6 +362,21 @@ nvme_rdma_validate_cm_event(enum rdma_cm_event_type expected_evt_type, 
		return 0;

	}



	switch (expected_evt_type) {

	case RDMA_CM_EVENT_ESTABLISHED:

		/*

		 * There is an enum ib_cm_rej_reason in the kernel headers that sets 10 as

		 * IB_CM_REJ_STALE_CONN. I can't find the corresponding userspace but we get

		 * the same values here.

		 */

		if (reaped_evt->event == RDMA_CM_EVENT_REJECTED && reaped_evt->status == 10) {

			rc = -ESTALE;

		}

		break;

	default:

		break;

	}



	SPDK_ERRLOG("Expected %s but received %s (%d) from CM event channel (status = %d)\n",

		    nvme_rdma_cm_event_str_get(expected_evt_type),

		    nvme_rdma_cm_event_str_get(reaped_evt->event), reaped_evt->event,