From: Logan Gunthorpe <logang@deltatee.com>
To: Christoph Hellwig <hch@lst.de>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>,
Sagi Grimberg <sagi@grimberg.me>, Jens Axboe <axboe@kernel.dk>,
Tejun Heo <tj@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Dan Williams <dan.j.williams@intel.com>,
Ross Zwisler <ross.zwisler@linux.intel.com>,
Matthew Wilcox <mawilcox@microsoft.com>,
Sumit Semwal <sumit.semwal@linaro.org>,
Ming Lin <ming.l@ssi.samsung.com>,
linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org,
linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org,
linaro-mm-sig@lists.linaro.org, intel-gfx@lists.freedesktop.org,
linux-raid@vger.kernel.org, linux-mmc@vger.kernel.org,
linux-nvme@lists.infradead.org, linux-nvdimm@ml01.01.org,
linux-scsi@vger.kernel.org, fcoe-devel@open-fcoe.org,
open-iscsi@googlegroups.com, megaraidlinux.pdl@broadcom.com,
sparmaintainer@unisys.com, devel@driverdev.osuosl.org,
target-devel@vger.kernel.org, netdev@vger.kernel.org,
linux-rdma@vger.kernel.org, rds-devel@oss.oracle.com,
Steve Wise <swise@opengridcomputing.com>,
Stephen Bates <sbates@raithlin.com>
Subject: Re: [PATCH 09/22] dm-crypt: Make use of the new sg_map helper in 4 call sites
Date: Fri, 14 Apr 2017 10:03:43 -0600 [thread overview]
Message-ID: <302ae5ab-d515-5427-2e54-d58a9cdb8241@deltatee.com> (raw)
In-Reply-To: <20170414083921.GC25471@lst.de>
On 14/04/17 02:39 AM, Christoph Hellwig wrote:
> On Thu, Apr 13, 2017 at 04:05:22PM -0600, Logan Gunthorpe wrote:
>> Very straightforward conversion to the new function in all four spots.
>
> I think the right fix here is to switch dm-crypt to the ahash API
> that takes a scatterlist.
Hmm, well I'm not sure I understand the code enough to make that
conversion. But I was looking at it. One tricky bit seems to be that
crypt_iv_lmk_one adds a seed, skips the first 16 bytes in the page and
then hashes another 16 bytes from other data. What would you do
construct a new sgl for it and pass it to the ahash api?
The other thing is crypt_iv_lmk_post also seems to modify the page after
the hash with a crypto_xor so you'd still need at least one kmap in there.
Logan
next prev parent reply other threads:[~2017-04-14 16:04 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-13 22:05 [PATCH 00/22] Introduce common scatterlist map function Logan Gunthorpe
2017-04-13 22:05 ` [PATCH 01/22] scatterlist: Introduce sg_map helper functions Logan Gunthorpe
2017-04-14 8:35 ` Christoph Hellwig
2017-04-14 15:34 ` Logan Gunthorpe
2017-04-13 22:05 ` [PATCH 02/22] nvmet: Make use of the new sg_map helper function Logan Gunthorpe
2017-04-14 4:59 ` Christoph Hellwig
2017-04-14 5:06 ` Logan Gunthorpe
2017-04-14 5:18 ` Christoph Hellwig
2017-04-13 22:05 ` [PATCH 03/22] libiscsi: Make use of new the " Logan Gunthorpe
2017-04-14 8:36 ` Christoph Hellwig
2017-04-14 15:37 ` Logan Gunthorpe
2017-04-13 22:05 ` [PATCH 04/22] target: Make use of the new sg_map function at 16 call sites Logan Gunthorpe
2017-04-13 22:05 ` [PATCH 05/22] drm/i915: Make use of the new sg_map helper function Logan Gunthorpe
2017-04-18 6:44 ` Daniel Vetter
2017-04-18 15:44 ` Logan Gunthorpe
2017-04-13 22:05 ` [PATCH 06/22] crypto: hifn_795x: " Logan Gunthorpe
2017-04-13 22:05 ` [PATCH 07/22] crypto: shash, caam: " Logan Gunthorpe
2017-04-13 22:05 ` [PATCH 08/22] crypto: chcr: " Logan Gunthorpe
2017-04-15 4:53 ` Harsh Jain
2017-04-13 22:05 ` [PATCH 09/22] dm-crypt: Make use of the new sg_map helper in 4 call sites Logan Gunthorpe
2017-04-14 8:39 ` Christoph Hellwig
2017-04-14 16:03 ` Logan Gunthorpe [this message]
2017-04-13 22:05 ` [PATCH 10/22] staging: unisys: visorbus: Make use of the new sg_map helper function Logan Gunthorpe
2017-04-14 16:07 ` Kershner, David A
2017-04-14 16:12 ` Logan Gunthorpe
2017-04-13 22:05 ` [PATCH 11/22] RDS: " Logan Gunthorpe
2017-04-13 22:05 ` [PATCH 12/22] scsi: ipr, pmcraid, isci: Make use of the new sg_map helper in 4 call sites Logan Gunthorpe
2017-04-13 22:05 ` [PATCH 13/22] scsi: hisi_sas, mvsas, gdth: Make use of the new sg_map helper function Logan Gunthorpe
2017-04-13 22:05 ` [PATCH 14/22] scsi: arcmsr, ips, megaraid: " Logan Gunthorpe
2017-04-13 22:05 ` [PATCH 15/22] scsi: libfc, csiostor: Change to sg_copy_buffer in two drivers Logan Gunthorpe
2017-04-13 22:05 ` [PATCH 16/22] xen-blkfront: Make use of the new sg_map helper function Logan Gunthorpe
2017-04-18 14:13 ` David Laight
2017-04-18 14:27 ` Konrad Rzeszutek Wilk
2017-04-18 15:42 ` Logan Gunthorpe
2017-04-18 15:50 ` Konrad Rzeszutek Wilk
2017-04-18 15:59 ` Logan Gunthorpe
2017-04-13 22:05 ` [PATCH 17/22] mmc: sdhci: " Logan Gunthorpe
2017-04-13 22:05 ` [PATCH 18/22] mmc: spi: " Logan Gunthorpe
2017-04-13 22:05 ` [PATCH 19/22] mmc: tmio: " Logan Gunthorpe
2017-04-13 22:05 ` [PATCH 20/22] mmc: sdricoh_cs: " Logan Gunthorpe
2017-04-13 22:05 ` [PATCH 21/22] mmc: tifm_sd: " Logan Gunthorpe
2017-04-13 22:05 ` [PATCH 22/22] memstick: " Logan Gunthorpe
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