Target/configfs: Expose iSCSI network portal group T10-PI support
User may enable T10-PI support per network portal group. any connection
established on top of it, will be required to serve protected transactions.
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
diff --git a/drivers/target/iscsi/iscsi_target_configfs.c b/drivers/target/iscsi/iscsi_target_configfs.c
index 1c0088f..fe35dcb 100644
--- a/drivers/target/iscsi/iscsi_target_configfs.c
+++ b/drivers/target/iscsi/iscsi_target_configfs.c
@@ -1052,6 +1052,11 @@
*/
DEF_TPG_ATTRIB(default_erl);
TPG_ATTR(default_erl, S_IRUGO | S_IWUSR);
+/*
+ * Define iscsi_tpg_attrib_s_t10_pi
+ */
+DEF_TPG_ATTRIB(t10_pi);
+TPG_ATTR(t10_pi, S_IRUGO | S_IWUSR);
static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
&iscsi_tpg_attrib_authentication.attr,
@@ -1064,6 +1069,7 @@
&iscsi_tpg_attrib_prod_mode_write_protect.attr,
&iscsi_tpg_attrib_demo_mode_discovery.attr,
&iscsi_tpg_attrib_default_erl.attr,
+ &iscsi_tpg_attrib_t10_pi.attr,
NULL,
};
diff --git a/drivers/target/iscsi/iscsi_target_tpg.c b/drivers/target/iscsi/iscsi_target_tpg.c
index 76c2b24..eb96b20 100644
--- a/drivers/target/iscsi/iscsi_target_tpg.c
+++ b/drivers/target/iscsi/iscsi_target_tpg.c
@@ -860,3 +860,22 @@
return 0;
}
+
+int iscsit_ta_t10_pi(
+ struct iscsi_portal_group *tpg,
+ u32 flag)
+{
+ struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
+
+ if ((flag != 0) && (flag != 1)) {
+ pr_err("Illegal value %d\n", flag);
+ return -EINVAL;
+ }
+
+ a->t10_pi = flag;
+ pr_debug("iSCSI_TPG[%hu] - T10 Protection information bit:"
+ " %s\n", tpg->tpgt, (a->t10_pi) ?
+ "ON" : "OFF");
+
+ return 0;
+}
diff --git a/drivers/target/iscsi/iscsi_target_tpg.h b/drivers/target/iscsi/iscsi_target_tpg.h
index 213c0fc..0a182f2 100644
--- a/drivers/target/iscsi/iscsi_target_tpg.h
+++ b/drivers/target/iscsi/iscsi_target_tpg.h
@@ -39,5 +39,6 @@
extern int iscsit_ta_prod_mode_write_protect(struct iscsi_portal_group *, u32);
extern int iscsit_ta_demo_mode_discovery(struct iscsi_portal_group *, u32);
extern int iscsit_ta_default_erl(struct iscsi_portal_group *, u32);
+extern int iscsit_ta_t10_pi(struct iscsi_portal_group *, u32);
#endif /* ISCSI_TARGET_TPG_H */