net/ncsi: add response handlers for PLDM over NC-SI

This patch adds handlers for PLDM over NC-SI command response.

This enables NC-SI driver recognizes the packet type so the responses
don't get dropped as unknown packet type.

PLDM over NC-SI are not handled in kernel driver for now, but can be
passed back to user space via Netlink for further handling.

Signed-off-by: Ben Wei <benwei@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ncsi/ncsi-rsp.c b/net/ncsi/ncsi-rsp.c
index dacabff..d5611f0 100644
--- a/net/ncsi/ncsi-rsp.c
+++ b/net/ncsi/ncsi-rsp.c
@@ -1038,6 +1038,11 @@ static int ncsi_rsp_handler_gpuuid(struct ncsi_request *nr)
 	return 0;
 }
 
+static int ncsi_rsp_handler_pldm(struct ncsi_request *nr)
+{
+	return 0;
+}
+
 static int ncsi_rsp_handler_netlink(struct ncsi_request *nr)
 {
 	struct ncsi_dev_priv *ndp = nr->ndp;
@@ -1091,8 +1096,10 @@ static struct ncsi_rsp_handler {
 	{ NCSI_PKT_RSP_GNPTS,  48, ncsi_rsp_handler_gnpts   },
 	{ NCSI_PKT_RSP_GPS,     8, ncsi_rsp_handler_gps     },
 	{ NCSI_PKT_RSP_OEM,    -1, ncsi_rsp_handler_oem     },
-	{ NCSI_PKT_RSP_PLDM,    0, NULL                     },
-	{ NCSI_PKT_RSP_GPUUID, 20, ncsi_rsp_handler_gpuuid  }
+	{ NCSI_PKT_RSP_PLDM,   -1, ncsi_rsp_handler_pldm    },
+	{ NCSI_PKT_RSP_GPUUID, 20, ncsi_rsp_handler_gpuuid  },
+	{ NCSI_PKT_RSP_QPNPR,  -1, ncsi_rsp_handler_pldm    },
+	{ NCSI_PKT_RSP_SNPR,   -1, ncsi_rsp_handler_pldm    }
 };
 
 int ncsi_rcv_rsp(struct sk_buff *skb, struct net_device *dev,