3.2.72-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Roland Dreier <roland@xxxxxxxxxxxxxxx>
commit 9c395170a559d3b23dad100b01fc4a89d661c698 upstream.
If an initiator doesn't have any real LUNs assigned, we should report
LUN 0 and a LUN list length of 1. Some versions of Solaris at least
go beserk if we report a LUN list length of 0.
Signed-off-by: Roland Dreier <roland@xxxxxxxxxxxxxxx>
Signed-off-by: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
[bwh: Backported to 3.2: adjust filename, context]
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
drivers/target/target_core_device.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -668,11 +668,8 @@ int target_report_luns(struct se_task *s
* coming via a target_core_mod PASSTHROUGH op, and not through
* a $FABRIC_MOD. In that case, report LUN=0 only.
*/
- if (!se_sess) {
- int_to_scsilun(0, (struct scsi_lun *)&buf[offset]);
- lun_count = 1;
+ if (!se_sess)
goto done;
- }
spin_lock_irq(&se_sess->se_node_acl->device_list_lock);
for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) {
@@ -699,6 +696,14 @@ int target_report_luns(struct se_task *s
* See SPC3 r07, page 159.
*/
done:
+ /*
+ * If no LUNs are accessible, report virtual LUN 0.
+ */
+ if (lun_count == 0) {
+ int_to_scsilun(0, (struct scsi_lun *)&buf[offset]);
+ lun_count = 1;
+ }
+
lun_count *= 8;
buf[0] = ((lun_count >> 24) & 0xff);
buf[1] = ((lun_count >> 16) & 0xff);
--
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