be2net: Bug fix to config NIC appropriately before loopback test

NIC controller has to be set to an appropriate mode before doing a loopback
test. Test will fail otherwise.

Signed-off-by: Sarveshwar Bandi <sarveshwarb@serverengines.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 35 insertions, 0 deletions

diff --git a/drivers/net/benet/be_cmds.c b/drivers/net/benet/be_cmds.c
index a27fdb35eebf..102ade134165 100644
--- a/drivers/net/benet/be_cmds.c
+++ b/drivers/net/benet/be_cmds.c
@@ -1479,6 +1479,41 @@ err:
         return status;
 }
 
+int be_cmd_set_loopback(struct be_adapter *adapter, u8 port_num,
+                        u8 loopback_type, u8 enable)
+{
+        struct be_mcc_wrb *wrb;
+        struct be_cmd_req_set_lmode *req;
+        int status;
+
+        spin_lock_bh(&adapter->mcc_lock);
+
+        wrb = wrb_from_mccq(adapter);
+        if (!wrb) {
+                status = -EBUSY;
+                goto err;
+        }
+
+        req = embedded_payload(wrb);
+
+        be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0,
+                                OPCODE_LOWLEVEL_SET_LOOPBACK_MODE);
+
+        be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_LOWLEVEL,
+                        OPCODE_LOWLEVEL_SET_LOOPBACK_MODE,
+                        sizeof(*req));
+
+        req->src_port = port_num;
+        req->dest_port = port_num;
+        req->loopback_type = loopback_type;
+        req->loopback_state = enable;
+
+        status = be_mcc_notify_wait(adapter);
+err:
+        spin_unlock_bh(&adapter->mcc_lock);
+        return status;
+}
+
 int be_cmd_loopback_test(struct be_adapter *adapter, u32 port_num,
                 u32 loopback_type, u32 pkt_size, u32 num_pkts, u64 pattern)
 {