iscsi,iser-target: Expose supported protection ops according to t10_pi
iSER will report supported protection operations based on
the tpg attribute t10_pi settings and HCA PI offload capabilities.
If the HCA does not support PI offload or tpg attribute t10_pi is
not set, we fall to SW PI mode.
In order to do that, we move iscsit_get_sup_prot_ops after connection
tpg assignment.
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Cc: <stable@vger.kernel.org> # v3.14+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c
index 618c815..a6daabc 100644
--- a/drivers/infiniband/ulp/isert/ib_isert.c
+++ b/drivers/infiniband/ulp/isert/ib_isert.c
@@ -64,7 +64,7 @@
static inline bool
isert_prot_cmd(struct isert_conn *conn, struct se_cmd *cmd)
{
- return (conn->conn_device->pi_capable &&
+ return (conn->pi_support &&
cmd->prot_op != TARGET_PROT_NORMAL);
}
@@ -2324,8 +2324,16 @@
struct isert_conn *isert_conn = (struct isert_conn *)conn->context;
struct isert_device *device = isert_conn->conn_device;
- if (device->pi_capable)
- return TARGET_PROT_ALL;
+ if (conn->tpg->tpg_attrib.t10_pi) {
+ if (device->pi_capable) {
+ pr_info("conn %p PI offload enabled\n", isert_conn);
+ isert_conn->pi_support = true;
+ return TARGET_PROT_ALL;
+ }
+ }
+
+ pr_info("conn %p PI offload disabled\n", isert_conn);
+ isert_conn->pi_support = false;
return TARGET_PROT_NORMAL;
}
