nvmet: add support to Discovery controllers for commands (6a8ec0ac) · Commits · 戴 / test

drivers/nvme/target/discovery.c

+53 −0

Original line number	Diff line number	Diff line
		@@ -183,6 +183,47 @@ out:
		nvmet_req_complete(req, status);
		}

		static void nvmet_execute_disc_set_features(struct nvmet_req *req)
		{
		u32 cdw10 = le32_to_cpu(req->cmd->common.cdw10[0]);
		u16 stat;

		switch (cdw10 & 0xff) {
		case NVME_FEAT_KATO:
		stat = nvmet_set_feat_kato(req);
		break;
		case NVME_FEAT_ASYNC_EVENT:
		stat = nvmet_set_feat_async_event(req,
		NVMET_DISC_AEN_CFG_OPTIONAL);
		break;
		default:
		stat = NVME_SC_INVALID_FIELD \| NVME_SC_DNR;
		break;
		}

		nvmet_req_complete(req, stat);
		}

		static void nvmet_execute_disc_get_features(struct nvmet_req *req)
		{
		u32 cdw10 = le32_to_cpu(req->cmd->common.cdw10[0]);
		u16 stat = 0;

		switch (cdw10 & 0xff) {
		case NVME_FEAT_KATO:
		nvmet_get_feat_kato(req);
		break;
		case NVME_FEAT_ASYNC_EVENT:
		nvmet_get_feat_async_event(req);
		break;
		default:
		stat = NVME_SC_INVALID_FIELD \| NVME_SC_DNR;
		break;
		}

		nvmet_req_complete(req, stat);
		}

		u16 nvmet_parse_discovery_cmd(struct nvmet_req *req)
		{
		struct nvme_command *cmd = req->cmd;
		@@ -194,6 +235,18 @@ u16 nvmet_parse_discovery_cmd(struct nvmet_req *req)
		}

		switch (cmd->common.opcode) {
		case nvme_admin_set_features:
		req->execute = nvmet_execute_disc_set_features;
		req->data_len = 0;
		return 0;
		case nvme_admin_get_features:
		req->execute = nvmet_execute_disc_get_features;
		req->data_len = 0;
		return 0;
		case nvme_admin_async_event:
		req->execute = nvmet_execute_async_event;
		req->data_len = 0;
		return 0;
		case nvme_admin_keep_alive:
		req->execute = nvmet_execute_keep_alive;
		req->data_len = 0;