Commit ace321df authored May 08, 2018 by Daniel Verkamp

nvme: add API to get maximum data transfer size



Change-Id: I8573732b3049e2a5b471e5a0313e39019fdaad5f
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/410518


Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>

parent abfed229

include/spdk/nvme.h

+11 −0

Original line number	Diff line number	Diff line
		@@ -468,6 +468,17 @@ uint32_t spdk_nvme_ctrlr_get_num_ns(struct spdk_nvme_ctrlr *ctrlr);
		*/
		struct spdk_pci_device spdk_nvme_ctrlr_get_pci_device(struct spdk_nvme_ctrlr ctrlr);

		/**
		* \brief Get the maximum data transfer size of a given NVMe controller.
		*
		* \return Maximum data transfer size of the NVMe controller in bytes.
		*
		* The I/O command helper functions, such as spdk_nvme_ns_cmd_read(), will split large I/Os
		* automatically; however, it is up to the user to obey this limit for commands submitted
		* with the raw command functions, such as spdk_nvme_ctrlr_cmd_io_raw().
		*/
		uint32_t spdk_nvme_ctrlr_get_max_xfer_size(const struct spdk_nvme_ctrlr *ctrlr);

		/**
		* \brief Return true if nsid is an active ns for the given NVMe controller.
		*

lib/nvme/nvme_ctrlr.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -1969,6 +1969,12 @@ spdk_nvme_ctrlr_get_pci_device(struct spdk_nvme_ctrlr *ctrlr)
		return nvme_ctrlr_proc_get_devhandle(ctrlr);
		}

		uint32_t
		spdk_nvme_ctrlr_get_max_xfer_size(const struct spdk_nvme_ctrlr *ctrlr)
		{
		return ctrlr->max_xfer_size;
		}

		void
		spdk_nvme_ctrlr_register_aer_callback(struct spdk_nvme_ctrlr *ctrlr,
		spdk_nvme_aer_cb aer_cb_fn,