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[SCSI] libosd: Fix bug in attr_page handling

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The _osd_req_finalize_attr_page was off by a mile, when trying to
append the enc_get_attr segment instead of the proper set_attr segment.

Also properly support when we don't have any attribute to set while
getting a full page. And when clearing an attribute by setting it's
size to zero.

Reported-by: John Chandy <john.chandy@uconn.edu>
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Boaz Harrosh 2010-10-19 14:20:31 +02:00 committed by James Bottomley
parent 391cbf46f2
commit ec6a0a41b5
1 changed files with 10 additions and 6 deletions
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16
drivers/scsi/osd/osd_initiator.c
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@ -1218,17 +1218,18 @@ int osd_req_add_get_attr_page(struct osd_request *or,
or->get_attr.buff = attar_page;
or->get_attr.total_bytes = max_page_len;
or->set_attr.buff = set_one_attr->val_ptr;
or->set_attr.total_bytes = set_one_attr->len;
cdbh->attrs_page.get_attr_page = cpu_to_be32(page_id);
cdbh->attrs_page.get_attr_alloc_length = cpu_to_be32(max_page_len);
/* ocdb->attrs_page.get_attr_offset; */
if (!set_one_attr || !set_one_attr->attr_page)
return 0; /* The set is optional */
or->set_attr.buff = set_one_attr->val_ptr;
or->set_attr.total_bytes = set_one_attr->len;
cdbh->attrs_page.set_attr_page = cpu_to_be32(set_one_attr->attr_page);
cdbh->attrs_page.set_attr_id = cpu_to_be32(set_one_attr->attr_id);
cdbh->attrs_page.set_attr_length = cpu_to_be32(set_one_attr->len);
/* ocdb->attrs_page.set_attr_offset; */
return 0;
}
EXPORT_SYMBOL(osd_req_add_get_attr_page);
@ -1248,11 +1249,14 @@ static int _osd_req_finalize_attr_page(struct osd_request *or)
if (ret)
return ret;
if (or->set_attr.total_bytes == 0)
return 0;
/* set one value */
cdbh->attrs_page.set_attr_offset =
osd_req_encode_offset(or, or->out.total_bytes, &out_padding);
ret = _req_append_segment(or, out_padding, &or->enc_get_attr, NULL,
ret = _req_append_segment(or, out_padding, &or->set_attr, NULL,
&or->out);
return ret;
}