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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2006-11-16 13:24:10 +0300
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2006-11-25 22:08:56 +0300
commitb58d91547fb17c65ad621f3f98b1f2c228c812a5 (patch)
tree4fafd4db96cb7931577f87b02a79cc6f52986333 /drivers/scsi/scsi_tgt_priv.h
parent84ad58e4efcf80c154f693d4cc8f5c913511b760 (diff)
downloadlinux-b58d91547fb17c65ad621f3f98b1f2c228c812a5.tar.xz
[SCSI] export scsi-ml functions needed by tgt_scsi_lib and its LLDs
This patch contains the needed changes to the scsi-ml for the target mode support. Note, per the last review we moved almost all the fields we added to the scsi_cmnd to our internal data structure which we are going to try and kill off when we can replace it with support from other parts of the kernel. The one field we left on was the offset variable. This is needed to handle the case where the target gets request that is so large that it cannot execute it in one dma operation. So max_secotors or a segment limit may limit the size of the transfer. In this case our tgt core code will break up the command into managable transfers and send them to the LLD one at a time. The offset is then used to tell the LLD where in the command we are at. Is there another field on the scsi_cmd for that? Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/scsi_tgt_priv.h')
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