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scsi: add request parsing helpers to common code.
Add helper functions for scsi request parsing to common code. Getting command length, transfer size, and linear block address is handled. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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3 changed files with 191 additions and 132 deletions
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@ -26,6 +26,8 @@ typedef struct SCSIRequest {
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struct {
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uint8_t buf[SCSI_CMD_BUF_SIZE];
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int len;
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size_t xfer;
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uint64_t lba;
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} cmd;
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BlockDriverAIOCB *aiocb;
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QTAILQ_ENTRY(SCSIRequest) next;
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@ -86,5 +88,6 @@ void scsi_bus_legacy_handle_cmdline(SCSIBus *bus);
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SCSIRequest *scsi_req_alloc(size_t size, SCSIDevice *d, uint32_t tag, uint32_t lun);
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SCSIRequest *scsi_req_find(SCSIDevice *d, uint32_t tag);
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void scsi_req_free(SCSIRequest *req);
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int scsi_req_parse(SCSIRequest *req, uint8_t *buf);
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#endif
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