1 /* 2 * Copyright (c) 2015 Pablo Neira Ayuso <pablo@netfilter.org> 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License version 2 as published by 6 * the Free Software Foundation. 7 */ 8 9 #include <linux/kernel.h> 10 #include <linux/init.h> 11 #include <linux/module.h> 12 #include <linux/netlink.h> 13 #include <linux/netfilter.h> 14 #include <linux/netfilter/nf_tables.h> 15 #include <net/netfilter/nf_tables.h> 16 17 void nf_dup_netdev_egress(const struct nft_pktinfo *pkt, int oif) 18 { 19 struct net_device *dev; 20 struct sk_buff *skb; 21 22 dev = dev_get_by_index_rcu(pkt->net, oif); 23 if (dev == NULL) 24 return; 25 26 skb = skb_clone(pkt->skb, GFP_ATOMIC); 27 if (skb == NULL) 28 return; 29 30 if (skb_mac_header_was_set(skb)) 31 skb_push(skb, skb->mac_len); 32 33 skb->dev = dev; 34 dev_queue_xmit(skb); 35 } 36 EXPORT_SYMBOL_GPL(nf_dup_netdev_egress); 37 38 MODULE_LICENSE("GPL"); 39 MODULE_AUTHOR("Pablo Neira Ayuso <pablo@netfilter.org>"); 40