1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * net/dsa/tag_none.c - Traffic handling for switches with no tag 4 * Copyright (c) 2008-2009 Marvell Semiconductor 5 * Copyright (c) 2013 Florian Fainelli <florian@openwrt.org> 6 * 7 * WARNING: do not use this for new switches. In case of no hardware 8 * tagging support, look at tag_8021q.c instead. 9 */ 10 11 #include "tag.h" 12 13 #define NONE_NAME "none" 14 15 static struct sk_buff *dsa_user_notag_xmit(struct sk_buff *skb, 16 struct net_device *dev) 17 { 18 /* Just return the original SKB */ 19 return skb; 20 } 21 22 static const struct dsa_device_ops none_ops = { 23 .name = NONE_NAME, 24 .proto = DSA_TAG_PROTO_NONE, 25 .xmit = dsa_user_notag_xmit, 26 }; 27 28 module_dsa_tag_driver(none_ops); 29 MODULE_ALIAS_DSA_TAG_DRIVER(DSA_TAG_PROTO_NONE, NONE_NAME); 30 MODULE_DESCRIPTION("DSA no-op tag driver"); 31 MODULE_LICENSE("GPL"); 32