Messages in this thread | | | Subject | Re: [PATCH v4 4/5] scsi: hisi_sas: Add support for DIF feature for v3 hw | From | "Martin K. Petersen" <> | Date | Mon, 17 Dec 2018 22:31:02 -0500 |
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John,
> We have an issue with using scsi_transfer_length(). > > As I understand, for our controller we need to set the host structure > data transfer size to the size of data to write to the disk for WRITE > type command, and at size of info received to host memory for READ > type command. As such, for READ STRIP, we only want the SCSI buf len, > and not the scsi buf len and PI (this is what scsi_transfer_length() > provides).
Interesting asymmetry.
-- Martin K. Petersen Oracle Linux Engineering
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