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bdev/iscsi: save Block limits VPD unmap settings

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Also free scsi_task data structure for the asynchronous
libiscsi APIs.

Change-Id: I0bff706bfb795e51a4b10c357913ae66493dca5d
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/7513
Community-CI: Broadcom CI
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
This commit is contained in:
Changpeng Liu 2021-04-20 20:22:04 +08:00 committed by Tomasz Zawadzki
parent 938cc7d959
commit 2594e757e5
1 changed files with 49 additions and 2 deletions
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51
module/bdev/iscsi/bdev_iscsi.c
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@ -58,6 +58,12 @@ struct bdev_iscsi_lun;
#define DEFAULT_INITIATOR_NAME "iqn.2016-06.io.spdk:init"
/* MAXIMUM UNMAP LBA COUNT:
* indicates the maximum number of LBAs that may be unmapped
* by an UNMAP command.
*/
#define BDEV_ISCSI_DEFAULT_MAX_UNMAP_LBA_COUNT (32768)
static int bdev_iscsi_initialize(void);
static TAILQ_HEAD(, bdev_iscsi_conn_req) g_iscsi_conn_req = TAILQ_HEAD_INITIALIZER(
g_iscsi_conn_req);
@ -99,6 +105,7 @@ struct bdev_iscsi_conn_req {
spdk_bdev_iscsi_create_cb create_cb;
void *create_cb_arg;
bool unmap_supported;
uint32_t max_unmap;
int lun;
int status;
TAILQ_ENTRY(bdev_iscsi_conn_req) link;
@ -702,7 +709,37 @@ ret:
}
static void
bdev_iscsi_inquiry_cb(struct iscsi_context *context, int status, void *_task, void *private_data)
bdev_iscsi_inquiry_bl_cb(struct iscsi_context *context, int status, void *_task, void *private_data)
{
struct scsi_task *task = _task;
struct scsi_inquiry_block_limits *bl_inq = NULL;
struct bdev_iscsi_conn_req *req = private_data;
if (status == SPDK_SCSI_STATUS_GOOD) {
bl_inq = scsi_datain_unmarshall(task);
if (bl_inq != NULL) {
if (!bl_inq->max_unmap) {
SPDK_ERRLOG("Invalid max_unmap, use the default\n");
req->max_unmap = BDEV_ISCSI_DEFAULT_MAX_UNMAP_LBA_COUNT;
} else {
req->max_unmap = bl_inq->max_unmap;
}
}
}
scsi_free_scsi_task(task);
task = iscsi_readcapacity16_task(context, req->lun, iscsi_readcapacity16_cb, req);
if (task) {
return;
}
SPDK_ERRLOG("iSCSI error: %s\n", iscsi_get_error(req->context));
complete_conn_req(req, NULL, status);
}
static void
bdev_iscsi_inquiry_lbp_cb(struct iscsi_context *context, int status, void *_task,
void *private_data)
{
struct scsi_task *task = _task;
struct scsi_inquiry_logical_block_provisioning *lbp_inq = NULL;
@ -712,7 +749,17 @@ bdev_iscsi_inquiry_cb(struct iscsi_context *context, int status, void *_task, vo
lbp_inq = scsi_datain_unmarshall(task);
if (lbp_inq != NULL && lbp_inq->lbpu) {
req->unmap_supported = true;
scsi_free_scsi_task(task);
task = iscsi_inquiry_task(context, req->lun, 1,
SCSI_INQUIRY_PAGECODE_BLOCK_LIMITS,
255, bdev_iscsi_inquiry_bl_cb, req);
if (task) {
return;
}
}
} else {
scsi_free_scsi_task(task);
}
task = iscsi_readcapacity16_task(context, req->lun, iscsi_readcapacity16_cb, req);
@ -737,7 +784,7 @@ iscsi_connect_cb(struct iscsi_context *iscsi, int status,
task = iscsi_inquiry_task(iscsi, req->lun, 1,
SCSI_INQUIRY_PAGECODE_LOGICAL_BLOCK_PROVISIONING,
255, bdev_iscsi_inquiry_cb, req);
255, bdev_iscsi_inquiry_lbp_cb, req);
if (task) {
return;
}