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SBC: Add GET_LBA_STATUS support and simple test

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This commit is contained in:
Ronnie Sahlberg
2012-05-30 18:41:12 +10:00
parent 6be4a82407
commit 812df62bfd
11 changed files with 266 additions and 8 deletions
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3
lib/libiscsi.def
View File

@@ -11,6 +11,8 @@ iscsi_full_connect_async
iscsi_full_connect_sync
iscsi_get_error
iscsi_get_fd
iscsi_get_lba_status_sync
iscsi_get_lba_status_task
iscsi_get_target_address
iscsi_inquiry_sync
iscsi_inquiry_task
@@ -85,6 +87,7 @@ iscsi_writesame16_sync
iscsi_writesame16_task
scsi_association_to_str
scsi_cdb_inquiry
scsi_cdb_get_lba_status
scsi_cdb_modesense6
scsi_cdb_prefetch10
scsi_cdb_prefetch16

3
lib/libiscsi.syms
View File

@@ -9,6 +9,8 @@ iscsi_full_connect_async
iscsi_full_connect_sync
iscsi_get_error
iscsi_get_fd
iscsi_get_lba_status_sync
iscsi_get_lba_status_task
iscsi_get_target_address
iscsi_inquiry_sync
iscsi_inquiry_task
@@ -83,6 +85,7 @@ iscsi_writesame16_sync
iscsi_writesame16_task
scsi_association_to_str
scsi_cdb_inquiry
scsi_cdb_get_lba_status
scsi_cdb_modesense6
scsi_cdb_prefetch10
scsi_cdb_prefetch16

22
lib/scsi-command.c
View File

@@ -625,6 +625,28 @@ iscsi_readcapacity16_task(struct iscsi_context *iscsi, int lun,
return task;
}
struct scsi_task *
iscsi_get_lba_status_task(struct iscsi_context *iscsi, int lun,
uint64_t starting_lba, uint32_t alloc_len,
iscsi_command_cb cb, void *private_data)
{
struct scsi_task *task;
task = scsi_cdb_get_lba_status(starting_lba, alloc_len);
if (task == NULL) {
iscsi_set_error(iscsi, "Out-of-memory: Failed to create "
"get-lba-status cdb.");
return NULL;
}
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_read6_task(struct iscsi_context *iscsi, int lun, uint32_t lba,
uint32_t datalen, int blocksize,

70
lib/scsi-lowlevel.c
View File

@@ -269,6 +269,9 @@ static void *
scsi_serviceactionin_datain_unmarshall(struct scsi_task *task)
{
struct scsi_readcapacity16 *rc16;
struct scsi_get_lba_status *gls;
int32_t len;
int i;
switch (task->params.serviceactionin.sa) {
case SCSI_READCAPACITY16:
@@ -276,17 +279,45 @@ scsi_serviceactionin_datain_unmarshall(struct scsi_task *task)
if (rc16 == NULL) {
return NULL;
}
rc16->returned_lba = htonl(*(uint32_t *)&(task->datain.data[0]));
rc16->returned_lba = (rc16->returned_lba << 32) | htonl(*(uint32_t *)&(task->datain.data[4]));
rc16->block_length = htonl(*(uint32_t *)&(task->datain.data[8]));
rc16->returned_lba = ntohl(*(uint32_t *)&(task->datain.data[0]));
rc16->returned_lba = (rc16->returned_lba << 32) | ntohl(*(uint32_t *)&(task->datain.data[4]));
rc16->block_length = ntohl(*(uint32_t *)&(task->datain.data[8]));
rc16->p_type = (task->datain.data[12] >> 1) & 0x07;
rc16->prot_en = task->datain.data[12] & 0x01;
rc16->p_i_exp = (task->datain.data[13] >> 4) & 0x0f;
rc16->lbppbe = task->datain.data[13] & 0x0f;
rc16->lbpme = !!(task->datain.data[14] & 0x80);
rc16->lbprz = !!(task->datain.data[14] & 0x40);
rc16->lalba = htons(*(uint16_t *)&(task->datain.data[14])) & 0x3fff;
rc16->lalba = ntohs(*(uint16_t *)&(task->datain.data[14])) & 0x3fff;
return rc16;
case SCSI_GET_LBA_STATUS:
len = ntohl(*(uint32_t *)&(task->datain.data[0]));
if (len > task->datain.size - 4) {
len = task->datain.size - 4;
}
len = len / 16;
gls = scsi_malloc(task, sizeof(struct scsi_get_lba_status));
if (gls == NULL) {
return NULL;
}
gls->num_descriptors = len;
gls->descriptors = scsi_malloc(task, sizeof(struct scsi_lba_status_descriptor) * gls->num_descriptors);
if (gls->descriptors == NULL) {
return NULL;
}
for (i = 0; i < (int)gls->num_descriptors; i++) {
gls->descriptors[i].lba = ntohl(*(uint32_t *)&(task->datain.data[8 + i * sizeof(struct scsi_lba_status_descriptor) + 0]));
gls->descriptors[i].lba <<= 32;
gls->descriptors[i].lba |= ntohl(*(uint32_t *)&(task->datain.data[8 + i * sizeof(struct scsi_lba_status_descriptor) + 4]));
gls->descriptors[i].num_blocks = ntohl(*(uint32_t *)&(task->datain.data[8 + i * sizeof(struct scsi_lba_status_descriptor) + 8]));
gls->descriptors[i].provisioning = task->datain.data[8 + i * sizeof(struct scsi_lba_status_descriptor) + 12] & 0x0f;
}
return gls;
}
return NULL;
@@ -1388,6 +1419,37 @@ scsi_cdb_readcapacity16(void)
return scsi_cdb_serviceactionin16(SCSI_READCAPACITY16, 32);
}
/*
* GET_LBA_STATUS
*/
struct scsi_task *
scsi_cdb_get_lba_status(uint64_t starting_lba, uint32_t alloc_len)
{
struct scsi_task *task;
task = malloc(sizeof(struct scsi_task));
if (task == NULL) {
return NULL;
}
memset(task, 0, sizeof(struct scsi_task));
task->cdb[0] = SCSI_OPCODE_SERVICE_ACTION_IN;
task->cdb[1] = SCSI_GET_LBA_STATUS;
*(uint32_t *)&task->cdb[2] = htonl(starting_lba >> 32);
*(uint32_t *)&task->cdb[6] = htonl(starting_lba & 0xffffffff);
*(uint32_t *)&task->cdb[10] = htonl(alloc_len);
task->cdb_size = 16;
task->xfer_dir = SCSI_XFER_READ;
task->expxferlen = alloc_len;
task->params.serviceactionin.sa = SCSI_GET_LBA_STATUS;
return task;
}
int
scsi_datain_getfullsize(struct scsi_task *task)
{

19
lib/sync.c
View File

@@ -355,6 +355,25 @@ iscsi_readcapacity16_sync(struct iscsi_context *iscsi, int lun)
return state.task;
}
struct scsi_task *
iscsi_get_lba_status_sync(struct iscsi_context *iscsi, int lun, uint64_t starting_lba, uint32_t alloc_len)
{
struct iscsi_sync_state state;
memset(&state, 0, sizeof(state));
if (iscsi_get_lba_status_task(iscsi, lun, starting_lba, alloc_len,
scsi_sync_cb, &state) == NULL) {
iscsi_set_error(iscsi,
"Failed to send GetLbaStatus command");
return NULL;
}
event_loop(iscsi, &state);
return state.task;
}
struct scsi_task *
iscsi_synchronizecache10_sync(struct iscsi_context *iscsi, int lun, int lba,
int num_blocks, int syncnv, int immed)