From d10003607bfb23c05bd11b1e690e1a9e59455207 Mon Sep 17 00:00:00 2001
From: Changpeng Liu <changpeng.liu@intel.com>
Date: Mon, 11 Oct 2021 23:02:30 +0800
Subject: [PATCH] nvmf: add Get Features with Host Behavior Support

We already support Set Features with Host Behavior, so here also
add the support in Get Features.

Change-Id: I27d973e81fd6be89cc67ad559439334fc1087c9e
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/9818
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: GangCao <gang.cao@intel.com>
Reviewed-by: Dong Yi <dongx.yi@intel.com>
Reviewed-by: John Levon <levon@movementarian.org>
---
 lib/nvmf/ctrlr.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/lib/nvmf/ctrlr.c b/lib/nvmf/ctrlr.c
index 3453d805c..9d13aa642 100644
--- a/lib/nvmf/ctrlr.c
+++ b/lib/nvmf/ctrlr.c
@@ -1679,6 +1679,28 @@ nvmf_ctrlr_set_features_reservation_persistence(struct spdk_nvmf_request *req)
 	return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
 }
 
+static int
+nvmf_ctrlr_get_features_host_behavior_support(struct spdk_nvmf_request *req)
+{
+	struct spdk_nvmf_ctrlr *ctrlr = req->qpair->ctrlr;
+	struct spdk_nvme_cpl *response = &req->rsp->nvme_cpl;
+	struct spdk_nvme_host_behavior host_behavior = {};
+
+	SPDK_DEBUGLOG(nvmf, "Get Features - Host Behavior Support\n");
+
+	if (req->data == NULL || req->length < sizeof(struct spdk_nvme_host_behavior)) {
+		SPDK_ERRLOG("invalid data buffer for Host Behavior Support\n");
+		response->status.sct = SPDK_NVME_SCT_GENERIC;
+		response->status.sc = SPDK_NVME_SC_INVALID_FIELD;
+		return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
+	}
+
+	host_behavior.acre = ctrlr->acre_enabled;
+	memcpy(req->data, &host_behavior, sizeof(host_behavior));
+
+	return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
+}
+
 static int
 nvmf_ctrlr_set_features_host_behavior_support(struct spdk_nvmf_request *req)
 {
@@ -2909,6 +2931,8 @@ nvmf_ctrlr_get_features(struct spdk_nvmf_request *req)
 		return nvmf_ctrlr_get_features_reservation_notification_mask(req);
 	case SPDK_NVME_FEAT_HOST_RESERVE_PERSIST:
 		return nvmf_ctrlr_get_features_reservation_persistence(req);
+	case SPDK_NVME_FEAT_HOST_BEHAVIOR_SUPPORT:
+		return nvmf_ctrlr_get_features_host_behavior_support(req);
 	default:
 		SPDK_INFOLOG(nvmf, "Get Features command with unsupported feature ID 0x%02x\n", feature);
 		response->status.sc = SPDK_NVME_SC_INVALID_FIELD;