Commit 6f3e2778 authored by Jim Harris's avatar Jim Harris Committed by Konrad Sztyber
Browse files

nvme: add spdk_nvme_ctrlr_get_max_sges 



Signed-off-by: default avatarJim Harris <jim.harris@samsung.com>
Change-Id: I41ecc9243c8d5b3969e9cc13dde9a538b13d71a3
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/21956


Community-CI: Mellanox Build Bot
Tested-by: default avatarSPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: default avatarShuhei Matsumoto <smatsumoto@nvidia.com>
Reviewed-by: default avatarKonrad Sztyber <konrad.sztyber@intel.com>
parent c522a811

CHANGELOG.md

+4 −0
Original line number Diff line number Diff line
@@ -11,6 +11,10 @@ SPDK applications can now start with `--wait-for-rpc` and JSON configuration pro 
Function `spdk_subsystem_init_from_json_config` is deprecated and will be removed in 24.09 release.

Please use `spdk_subsystem_load_config` instead.



### nvme



Added `spdk_nvme_ctrlr_get_max_sges`.



### bdev_uring



Added `bdev_uring_rescan` RPC to allow rescaning the size of uring bdev.

include/spdk/nvme.h

+11 −0
Original line number Diff line number Diff line
@@ -1330,6 +1330,17 @@ struct spdk_pci_device *spdk_nvme_ctrlr_get_pci_device(struct spdk_nvme_ctrlr *c 
 */

uint32_t spdk_nvme_ctrlr_get_max_xfer_size(const struct spdk_nvme_ctrlr *ctrlr);



/**

 * Get the maximum number of SGEs per request for the given NVMe controller.

 *

 * Controllers that do not support SGL will return UINT16_MAX.

 *

 * \param ctrlr Opaque handle to NVMe controller.

 *

 * \return Maximum number of SGEs per request

 */

uint16_t spdk_nvme_ctrlr_get_max_sges(const struct spdk_nvme_ctrlr *ctrlr);



/**

 * Check whether the nsid is an active nv for the given NVMe controller.

 *

lib/nvme/nvme_ctrlr.c

+10 −0
Original line number Diff line number Diff line
@@ -4571,6 +4571,16 @@ spdk_nvme_ctrlr_get_max_xfer_size(const struct spdk_nvme_ctrlr *ctrlr) 
	return ctrlr->max_xfer_size;

}



uint16_t

spdk_nvme_ctrlr_get_max_sges(const struct spdk_nvme_ctrlr *ctrlr)

{

	if (ctrlr->flags & SPDK_NVME_CTRLR_SGL_SUPPORTED) {

		return ctrlr->max_sges;

	} else {

		return UINT16_MAX;

	}

}



void

spdk_nvme_ctrlr_register_aer_callback(struct spdk_nvme_ctrlr *ctrlr,

				      spdk_nvme_aer_cb aer_cb_fn,

lib/nvme/spdk_nvme.map

+1 −0
Original line number Diff line number Diff line
@@ -56,6 +56,7 @@ 
	spdk_nvme_ctrlr_get_num_ns;

	spdk_nvme_ctrlr_get_pci_device;

	spdk_nvme_ctrlr_get_max_xfer_size;

	spdk_nvme_ctrlr_get_max_sges;

	spdk_nvme_ctrlr_is_active_ns;

	spdk_nvme_ctrlr_get_first_active_ns;

	spdk_nvme_ctrlr_get_next_active_ns;