Hi liujun
What you are doing sounds more-or-less the same as what the
scsi_vhci.c code does - see
http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/modules/scsi_vhci/scsi_vhci.c
Keep in mind that a driver should not allocate a scsi_pkt on its own
(or have other dependencies on sizeof (struct scsi_pkt)). We currently
have some violations of this rule in our own source, but that does not
change the fact that scsi_hba_pkt_alloc() should be used (or for a
physical hba on nevada, tran_setup_pkt(9E) should be implemented).
-Chris
> Hi, all
>
> I face a problem about relaying a scsi_pkt.
> The following is a simply decribe.
>
> When receiving a scsi_pkt (called it old scsi_pkt) from targt driver, my
> module will init a new scsi_pkt by xx_scsi_pkt method and the params are same
> as old scsi_pkt created.
> When my new scsi_pkt is done OK, it will copy the result to the old scsi_pkt.
>
> step 1, (ssd) scsi_pkt -------->(my module) init a new
> scsi_pkt -------->(HBA) send it out
>
> step 2, (ssd) scsi_pkt <--------(my module) copy result to
> old scsi_pkt <--------(HBA) recive response
>
>
> In step 1, I copy pkt_private from old scsi_pkt to new scsi_pkt and
> fill other members of scsi_pkt
> In setp 2, I copy pkt_private from new scsi_pkt to old scsi_pkt
>
> My problem is the new scsi_pkt is done ok(I know from my log) ,but the
> old scsi_pkt is not OK(because some command is not ok ,such as format). I
> think i ignore some detail.My foucs is on the pkt_private , is right?
>
> I hope your idea .
> Thanks.
>
>
>
>
>
>
>
> struct scsi_pkt {
> opaque_t pkt_ha_private; /* private data for host adapter */
> struct scsi_address pkt_address; /* destination packet is for */
> opaque_t pkt_private; /* private data for target driver */
> void (*pkt_comp)(struct scsi_pkt *); /* completion routine */
> uint_t pkt_flags; /* flags */
> int pkt_time; /* time allotted to complete command */
> uchar_t *pkt_scbp; /* pointer to status block */
> uchar_t *pkt_cdbp; /* pointer to command block */
> ssize_t pkt_resid; /* data bytes not transferred */
> uint_t pkt_state; /* state of command */
> uint_t pkt_statistics; /* statistics */
> uchar_t pkt_reason; /* reason completion called */
> uint_t pkt_cdblen;
> uint_t pkt_tgtlen;
> uint_t pkt_scblen;
> ddi_dma_handle_t pkt_handle;
> uint_t pkt_numcookies;
> off_t pkt_dma_offset;
> size_t pkt_dma_len;
> uint_t pkt_dma_flags;
> ddi_dma_cookie_t *pkt_cookies;
> };
>
>
> This message posted from opensolaris.org
> _______________________________________________
> storage-discuss mailing list
> [email protected]
> http://mail.opensolaris.org/mailman/listinfo/storage-discuss
>
_______________________________________________
storage-discuss mailing list
[email protected]
http://mail.opensolaris.org/mailman/listinfo/storage-discuss
