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SBC: Add support for WRITESAME10 and a simple test for using writesame10 to unmap blocks from thin provisioned luns

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This commit is contained in:
Ronnie Sahlberg
2012-04-28 13:55:37 +10:00
parent dc01df1e00
commit cc0fa15e14
9 changed files with 278 additions and 1 deletions
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44
lib/scsi-command.c
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@@ -794,6 +794,50 @@ iscsi_synchronizecache10_task(struct iscsi_context *iscsi, int lun, int lba,
return task;
}
struct scsi_task *
iscsi_writesame10_task(struct iscsi_context *iscsi, int lun,
unsigned char *data, uint32_t datalen,
uint32_t lba, uint16_t num_blocks,
int anchor, int unmap, int pbdata, int lbdata,
int wrprotect, int group,
iscsi_command_cb cb, void *private_data)
{
struct scsi_task *task;
struct iscsi_data outdata;
task = scsi_cdb_writesame10(wrprotect, anchor, unmap, pbdata, lbdata, lba, group, num_blocks);
if (task == NULL) {
iscsi_set_error(iscsi, "Out-of-memory: Failed to create "
"writesame10 cdb.");
return NULL;
}
if (datalen) {
outdata.data = data;
outdata.size = datalen;
task->expxferlen = datalen;
if (iscsi_scsi_command_async(iscsi, lun, task, cb, &outdata,
private_data) != 0) {
scsi_free_scsi_task(task);
return NULL;
}
} else {
task->expxferlen = 0;
task->xfer_dir = SCSI_XFER_NONE;
if (iscsi_scsi_command_async(iscsi, lun, task, cb, NULL,
private_data) != 0) {
scsi_free_scsi_task(task);
return NULL;
}
}
return task;
}
struct scsi_task *
iscsi_unmap_task(struct iscsi_context *iscsi, int lun, int anchor, int group,
struct unmap_list *list, int list_len,