target: Update QUEUE ALGORITHM MODIFIER control page default
This patch adds the default 'Unrestricted reordering allowed' for SCSI
control mode page QUEUE ALGORITHM MODIFIER on a per se_device basis in
target_modesense_control() following spc4r23. This includes a new
emuluate_rest_reord configfs attribute that currently (only) accepts
zero to signal 'Unrestricted reordering allowed' in control mode page
usage by the backend target device.
Reported-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@risingtidesystems.com>
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index 8204c76..86ca355 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -662,6 +662,7 @@
int emulate_alua;
int enforce_pr_isids;
int is_nonrot;
+ int emulate_rest_reord;
u32 hw_block_size;
u32 block_size;
u32 hw_max_sectors;
diff --git a/include/target/target_core_device.h b/include/target/target_core_device.h
index f3b6ae6..4657191 100644
--- a/include/target/target_core_device.h
+++ b/include/target/target_core_device.h
@@ -40,6 +40,7 @@
extern int se_dev_set_emulate_tpws(struct se_device *, int);
extern int se_dev_set_enforce_pr_isids(struct se_device *, int);
extern int se_dev_set_is_nonrot(struct se_device *, int);
+extern int se_dev_set_emulate_rest_reord(struct se_device *dev, int);
extern int se_dev_set_queue_depth(struct se_device *, u32);
extern int se_dev_set_max_sectors(struct se_device *, u32);
extern int se_dev_set_optimal_sectors(struct se_device *, u32);
diff --git a/include/target/target_core_transport.h b/include/target/target_core_transport.h
index 54af39d..f41b07c 100644
--- a/include/target/target_core_transport.h
+++ b/include/target/target_core_transport.h
@@ -103,6 +103,8 @@
#define DA_STATUS_MAX_SECTORS_MAX 8192
/* By default don't report non-rotating (solid state) medium */
#define DA_IS_NONROT 0
+/* Queue Algorithm Modifier default for restricted reordering in control mode page */
+#define DA_EMULATE_REST_REORD 0
#define SE_MODE_PAGE_BUF 512
