diff --git a/CHANGELOG.md b/CHANGELOG.md
index f95724caf..32bd56daf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -25,6 +25,11 @@ Added `blobfs_set_cache_size` RPC method to set cache size for blobstore filesys
 `spdk_pipe`, a new utility for buffering data from sockets or files for parsing
 has been added. The public API is available at `include/spdk/pipe.h`.
 
+### nvme
+
+`delayed_pcie_doorbell` parameter in `spdk_nvme_io_qpair_opts` was renamed to `delay_cmd_submit`
+to allow reuse in other transports.
+
 ## v19.10:
 
 ### rpc
diff --git a/examples/nvme/fio_plugin/fio_plugin.c b/examples/nvme/fio_plugin/fio_plugin.c
index 14cba2a7f..cfe4ab04e 100644
--- a/examples/nvme/fio_plugin/fio_plugin.c
+++ b/examples/nvme/fio_plugin/fio_plugin.c
@@ -1,8 +1,8 @@
 /*-
  *   BSD LICENSE
  *
- *   Copyright (c) Intel Corporation.
- *   All rights reserved.
+ *   Copyright (c) Intel Corporation. All rights reserved.
+ *   Copyright (c) 2019 Mellanox Technologies LTD. All rights reserved.
  *
  *   Redistribution and use in source and binary forms, with or without
  *   modification, are permitted provided that the following conditions
@@ -313,7 +313,7 @@ attach_cb(void *cb_ctx, const struct spdk_nvme_transport_id *trid,
 	}
 
 	spdk_nvme_ctrlr_get_default_io_qpair_opts(fio_ctrlr->ctrlr, &qpopts, sizeof(qpopts));
-	qpopts.delay_pcie_doorbell = true;
+	qpopts.delay_cmd_submit = true;
 
 	fio_qpair->qpair = spdk_nvme_ctrlr_alloc_io_qpair(fio_ctrlr->ctrlr, &qpopts, sizeof(qpopts));
 	if (!fio_qpair->qpair) {
diff --git a/examples/nvme/perf/perf.c b/examples/nvme/perf/perf.c
index 2d4ee623e..037b84e12 100644
--- a/examples/nvme/perf/perf.c
+++ b/examples/nvme/perf/perf.c
@@ -597,7 +597,7 @@ nvme_init_ns_worker_ctx(struct ns_worker_ctx *ns_ctx)
 	if (opts.io_queue_requests < entry->num_io_requests) {
 		opts.io_queue_requests = entry->num_io_requests;
 	}
-	opts.delay_pcie_doorbell = true;
+	opts.delay_cmd_submit = true;
 
 	for (i = 0; i < ns_ctx->u.nvme.num_qpairs; i++) {
 		ns_ctx->u.nvme.qpair[i] = spdk_nvme_ctrlr_alloc_io_qpair(entry->u.nvme.ctrlr, &opts,
diff --git a/include/spdk/nvme.h b/include/spdk/nvme.h
index 2de252076..968c5a870 100644
--- a/include/spdk/nvme.h
+++ b/include/spdk/nvme.h
@@ -1,8 +1,8 @@
 /*-
  *   BSD LICENSE
  *
- *   Copyright (c) Intel Corporation.
- *   All rights reserved.
+ *   Copyright (c) Intel Corporation. All rights reserved.
+ *   Copyright (c) 2019 Mellanox Technologies LTD. All rights reserved.
  *
  *   Redistribution and use in source and binary forms, with or without
  *   modification, are permitted provided that the following conditions
@@ -1032,14 +1032,22 @@ struct spdk_nvme_io_qpair_opts {
 
 	/**
 	 * When submitting I/O via spdk_nvme_ns_read/write and similar functions,
-	 * don't immediately write the submission queue doorbell. Instead, write
-	 * to the doorbell as necessary inside spdk_nvme_qpair_process_completions().
+	 * don't immediately submit it to hardware. Instead, queue up new commands
+	 * and submit them to the hardware inside spdk_nvme_qpair_process_completions().
 	 *
-	 * This results in better batching of I/O submission and consequently fewer
-	 * MMIO writes to the doorbell, which may increase performance.
+	 * This results in better batching of I/O commands. Often, it is more efficient
+	 * to submit batches of commands to the underlying hardware than each command
+	 * individually.
 	 *
-	 * This only applies to local PCIe devices. */
-	bool delay_pcie_doorbell;
+	 * This only applies to PCIe and RDMA transports.
+	 *
+	 * The flag was originally named delay_pcie_doorbell. To allow backward compatibility
+	 * both names are kept in unnamed union.
+	 */
+	union {
+		bool delay_cmd_submit;
+		bool delay_pcie_doorbell;
+	};
 
 	/**
 	 * These fields allow specifying the memory buffers for the submission and/or
diff --git a/lib/nvme/nvme_ctrlr.c b/lib/nvme/nvme_ctrlr.c
index 610559742..ddcd9426b 100644
--- a/lib/nvme/nvme_ctrlr.c
+++ b/lib/nvme/nvme_ctrlr.c
@@ -1,8 +1,8 @@
 /*-
  *   BSD LICENSE
  *
- *   Copyright (c) Intel Corporation.
- *   All rights reserved.
+ *   Copyright (c) Intel Corporation. All rights reserved.
+ *   Copyright (c) 2019 Mellanox Technologies LTD. All rights reserved.
  *
  *   Redistribution and use in source and binary forms, with or without
  *   modification, are permitted provided that the following conditions
@@ -253,8 +253,8 @@ spdk_nvme_ctrlr_get_default_io_qpair_opts(struct spdk_nvme_ctrlr *ctrlr,
 		opts->io_queue_requests = ctrlr->opts.io_queue_requests;
 	}
 
-	if (FIELD_OK(delay_pcie_doorbell)) {
-		opts->delay_pcie_doorbell = false;
+	if (FIELD_OK(delay_cmd_submit)) {
+		opts->delay_cmd_submit = false;
 	}
 
 	if (FIELD_OK(sq.vaddr)) {
diff --git a/lib/nvme/nvme_pcie.c b/lib/nvme/nvme_pcie.c
index cf4aa2b2c..839746678 100644
--- a/lib/nvme/nvme_pcie.c
+++ b/lib/nvme/nvme_pcie.c
@@ -1,9 +1,9 @@
 /*-
  *   BSD LICENSE
  *
- *   Copyright (c) Intel Corporation.
- *   Copyright (c) 2017, IBM Corporation.
- *   All rights reserved.
+ *   Copyright (c) Intel Corporation. All rights reserved.
+ *   Copyright (c) 2017, IBM Corporation. All rights reserved.
+ *   Copyright (c) 2019 Mellanox Technologies LTD. All rights reserved.
  *
  *   Redistribution and use in source and binary forms, with or without
  *   modification, are permitted provided that the following conditions
@@ -165,7 +165,7 @@ struct nvme_pcie_qpair {
 
 	struct {
 		uint8_t phase			: 1;
-		uint8_t delay_pcie_doorbell	: 1;
+		uint8_t delay_cmd_submit	: 1;
 		uint8_t has_shadow_doorbell	: 1;
 	} flags;
 
@@ -702,7 +702,7 @@ nvme_pcie_ctrlr_construct_admin_qpair(struct spdk_nvme_ctrlr *ctrlr)
 	}
 
 	pqpair->num_entries = NVME_ADMIN_ENTRIES;
-	pqpair->flags.delay_pcie_doorbell = 0;
+	pqpair->flags.delay_cmd_submit = 0;
 
 	ctrlr->adminq = &pqpair->qpair;
 
@@ -1300,7 +1300,7 @@ nvme_pcie_qpair_submit_tracker(struct spdk_nvme_qpair *qpair, struct nvme_tracke
 		SPDK_ERRLOG("sq_tail is passing sq_head!\n");
 	}
 
-	if (!pqpair->flags.delay_pcie_doorbell) {
+	if (!pqpair->flags.delay_cmd_submit) {
 		nvme_pcie_qpair_ring_sq_doorbell(qpair);
 	}
 }
@@ -1613,7 +1613,7 @@ nvme_pcie_ctrlr_create_io_qpair(struct spdk_nvme_ctrlr *ctrlr, uint16_t qid,
 	}
 
 	pqpair->num_entries = opts->io_queue_size;
-	pqpair->flags.delay_pcie_doorbell = opts->delay_pcie_doorbell;
+	pqpair->flags.delay_cmd_submit = opts->delay_cmd_submit;
 
 	qpair = &pqpair->qpair;
 
@@ -2143,7 +2143,7 @@ nvme_pcie_qpair_process_completions(struct spdk_nvme_qpair *qpair, uint32_t max_
 		nvme_pcie_qpair_ring_cq_doorbell(qpair);
 	}
 
-	if (pqpair->flags.delay_pcie_doorbell) {
+	if (pqpair->flags.delay_cmd_submit) {
 		if (pqpair->last_sq_tail != pqpair->sq_tail) {
 			nvme_pcie_qpair_ring_sq_doorbell(qpair);
 			pqpair->last_sq_tail = pqpair->sq_tail;
diff --git a/module/bdev/nvme/bdev_nvme.c b/module/bdev/nvme/bdev_nvme.c
index 3865f831a..dab3a4732 100644
--- a/module/bdev/nvme/bdev_nvme.c
+++ b/module/bdev/nvme/bdev_nvme.c
@@ -1,8 +1,8 @@
 /*-
  *   BSD LICENSE
  *
- *   Copyright (c) Intel Corporation.
- *   All rights reserved.
+ *   Copyright (c) Intel Corporation. All rights reserved.
+ *   Copyright (c) 2019 Mellanox Technologies LTD. All rights reserved.
  *
  *   Redistribution and use in source and binary forms, with or without
  *   modification, are permitted provided that the following conditions
@@ -326,7 +326,7 @@ _bdev_nvme_reset_create_qpair(struct spdk_io_channel_iter *i)
 	struct spdk_nvme_io_qpair_opts opts;
 
 	spdk_nvme_ctrlr_get_default_io_qpair_opts(nvme_bdev_ctrlr->ctrlr, &opts, sizeof(opts));
-	opts.delay_pcie_doorbell = true;
+	opts.delay_cmd_submit = true;
 
 	nvme_ch->qpair = spdk_nvme_ctrlr_alloc_io_qpair(nvme_bdev_ctrlr->ctrlr, &opts, sizeof(opts));
 	if (!nvme_ch->qpair) {
@@ -608,7 +608,7 @@ bdev_nvme_create_cb(void *io_device, void *ctx_buf)
 #endif
 
 	spdk_nvme_ctrlr_get_default_io_qpair_opts(nvme_bdev_ctrlr->ctrlr, &opts, sizeof(opts));
-	opts.delay_pcie_doorbell = true;
+	opts.delay_cmd_submit = true;
 	opts.io_queue_requests = spdk_max(g_opts.io_queue_requests, opts.io_queue_requests);
 	g_opts.io_queue_requests = opts.io_queue_requests;