Commit fbec7029 authored by paul luse's avatar paul luse Committed by Darek Stojaczyk
Browse files

bdev/crypto: Set QAT alignment requirement 



For QAT, a single operation can be described at most by one IOV.
To assure that we don't get memory buffers that are sub-block sized,
set the alignment requirement to the block size of the underlying device.

Change-Id: I4071bb89e696fc40e010798bd76520e5fb765217
Signed-off-by: default avatarpaul luse <paul.e.luse@intel.com>
Reviewed-on: https://review.gerrithub.io/c/440988


Tested-by: default avatarSPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: default avatarJim Harris <james.r.harris@intel.com>
Reviewed-by: default avatarShuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: default avatarDarek Stojaczyk <dariusz.stojaczyk@intel.com>
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
parent b62a1f9e

lib/bdev/crypto/vbdev_crypto.c

+8 −1
Original line number Diff line number Diff line
@@ -1430,7 +1430,14 @@ vbdev_crypto_claim(struct spdk_bdev *bdev) 


		vbdev->crypto_bdev.product_name = "crypto";

		vbdev->crypto_bdev.write_cache = bdev->write_cache;

		if (strcmp(vbdev->drv_name, QAT) == 0) {

			vbdev->crypto_bdev.required_alignment =

				spdk_max(spdk_u32log2(bdev->blocklen), bdev->required_alignment);

			SPDK_NOTICELOG("QAT in use: Required alignment set to %u\n",

				       vbdev->crypto_bdev.required_alignment);

		} else {

			vbdev->crypto_bdev.required_alignment = bdev->required_alignment;

		}

		/* Note: CRYPTO_MAX_IO is in units of bytes, optimal_io_boundary is

		 * in units of blocks.

		 */