[stgt] spc: Support NAA IEEE Registered Extended field in VPD page 0x83

[Or Gerlitz]

On 25/02/2014 14:54, Or Gerlitz wrote:
> From: Dennis Cullison <Dennis.Cullison at Teradata.com>
>
> Enables support for the NAA IEEE Registered Extended field in the
> inquiry VPD page 0x83. This field is used by multi-pathing
> software for device persistency.

Hi Tomo,

I didn't see a comment from you on this patch, did you get it?

Or.


> Signed-off-by: Dennis Cullison <Dennis.Cullison at Teradata.com>
> Signed-off-by: Or Gerlitz <ogerlitz at mellanox.com>
> ---
>
> Hi Tomo,
>
> This fix is from Dennis Cullison who asked me to assist in submission
>
> Or.
>
>   usr/spc.c |   26 +++++++++++++++++++++++++-
>   1 files changed, 25 insertions(+), 1 deletions(-)
>
> diff --git a/usr/spc.c b/usr/spc.c
> index 29f39a9..0dd590f 100644
> --- a/usr/spc.c
> +++ b/usr/spc.c
> @@ -145,6 +145,12 @@ static void update_vpd_83(struct scsi_lu *lu, void *id)
>   	struct vpd *vpd_pg = lu->attrs.lu_vpd[PCODE_OFFSET(0x83)];
>   	uint8_t	*data = vpd_pg->data;
>   
> +	char *id_str = id;
> +	char subs[] = "0";
> +	unsigned long a = 0;
> +	unsigned long b = 0;
> +	unsigned long c;
> +
>   	data[0] = INQ_CODE_ASCII;
>   	data[1] = DESG_T10;
>   	data[3] = SCSI_ID_LEN;
> @@ -160,6 +166,24 @@ static void update_vpd_83(struct scsi_lu *lu, void *id)
>   
>   	put_unaligned_be64(lu->attrs.numeric_id, data);
>   	data[0] |= NAA_LOCAL << 4;
> +
> +	data += NAA_DESG_LEN;
> +	data[0] = INQ_CODE_BIN;
> +	data[1] = DESG_NAA;
> +	data[3] = NAA_DESG_LEN_EXTD;
> +	data += DESG_HDR_LEN;
> +	while (*id_str) {
> +		subs[0] = *id_str++;
> +		c = a >> 60;
> +		a <<= 4;
> +		b <<= 4;
> +		b |= c;
> +		a |= strtoul(subs, NULL, 16);
> +	}
> +	put_unaligned_be64(b, data);
> +	put_unaligned_be64(a, data + 8);
> +	data[0] &= 0x0F;
> +	data[0] |= NAA_IEEE_REGD_EXTD << 4;
>   }
>   
>   static void update_vpd_b2(struct scsi_lu *lu, void *id)
> @@ -2060,7 +2084,7 @@ int spc_lu_init(struct scsi_lu *lu)
>   
>   	/* VPD page 0x83 */
>   	pg = PCODE_OFFSET(0x83);
> -	lu_vpd[pg] = alloc_vpd(2*DESG_HDR_LEN + NAA_DESG_LEN + SCSI_ID_LEN);
> +	lu_vpd[pg] = alloc_vpd(3*DESG_HDR_LEN + NAA_DESG_LEN + SCSI_ID_LEN + NAA_DESG_LEN_EXTD);
>   	if (!lu_vpd[pg])
>   		return -ENOMEM;
>   	lu_vpd[pg]->vpd_update = update_vpd_83;

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