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Add support for UNMAP command and add a simple test for this opcode

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This commit is contained in:
Ronnie Sahlberg
2012-04-22 08:09:15 +10:00
parent d71a9d4f95
commit dd5f94b2ca
10 changed files with 260 additions and 2 deletions
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47
lib/scsi-command.c
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@@ -794,6 +794,53 @@ iscsi_synchronizecache10_task(struct iscsi_context *iscsi, int lun, int lba,
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,
iscsi_command_cb cb, void *private_data)
{
struct scsi_task *task;
struct iscsi_data outdata;
unsigned char *data;
int xferlen;
int i;
xferlen = 8 + list_len * 16;
task = scsi_cdb_unmap(anchor, group, xferlen);
if (task == NULL) {
iscsi_set_error(iscsi, "Out-of-memory: Failed to create "
"unmap cdb.");
return NULL;
}
data = scsi_malloc(task, xferlen);
if (data == NULL) {
iscsi_set_error(iscsi, "Out-of-memory: Failed to create "
"unmap parameters.");
scsi_free_scsi_task(task);
return NULL;
}
*((uint16_t *)&data[0]) = htons(xferlen - 2);
*((uint16_t *)&data[2]) = htons(xferlen - 8);
for (i = 0; i < list_len; i++) {
*((uint32_t *)&data[8 + 16 * i]) = htonl(list[0].lba >> 32);
*((uint32_t *)&data[8 + 16 * i + 4]) = htonl(list[0].lba & 0xffffffff);
*((uint32_t *)&data[8 + 16 * i + 8]) = htonl(list[0].num);
}
outdata.data = data;
outdata.size = xferlen;
if (iscsi_scsi_command_async(iscsi, lun, task, cb, &outdata,
private_data) != 0) {
scsi_free_scsi_task(task);
return NULL;
}
return task;
}
unsigned char *
iscsi_get_user_in_buffer(struct iscsi_context *iscsi, struct iscsi_in_pdu *in, uint32_t pos, ssize_t *count)
{