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>

1 files changed, 19 insertions, 0 deletions

diff --git a/drivers/target/iscsi/iscsi_target_tpg.c b/drivers/target/iscsi/iscsi_target_tpg.c
index 76c2b2403ed6..eb96b20dc09e 100644
--- a/drivers/target/iscsi/iscsi_target_tpg.c
+++ b/drivers/target/iscsi/iscsi_target_tpg.c
@@ -860,3 +860,22 @@ int iscsit_ta_default_erl(
 
         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;
+}