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iscsi: Implement copy offloading

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Issue EXTENDED COPY (LID1) command to implement the copy_range API.

The parameter data construction code is modified from libiscsi's
iscsi-dd.c.

Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20180601092648.24614-9-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Fam Zheng
2018-06-01 17:26:46 +08:00
committed by Stefan Hajnoczi
parent 66e75c03b2
commit 604dfaaa32
2 changed files with 223 additions and 0 deletions
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4
include/scsi/constants.h
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@ -311,4 +311,8 @@
#define MMC_PROFILE_HDDVD_RW_DL 0x005A
#define MMC_PROFILE_INVALID 0xFFFF
#define XCOPY_DESC_OFFSET 16
#define IDENT_DESCR_TGT_DESCR_SIZE 32
#define XCOPY_BLK2BLK_SEG_DESC_SIZE 28
#endif