diff options
Diffstat (limited to 'net/netfilter/nf_dup_netdev.c')
-rw-r--r-- | net/netfilter/nf_dup_netdev.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/net/netfilter/nf_dup_netdev.c b/net/netfilter/nf_dup_netdev.c new file mode 100644 index 000000000000..8414ee1a0319 --- /dev/null +++ b/net/netfilter/nf_dup_netdev.c @@ -0,0 +1,40 @@ +/* + * Copyright (c) 2015 Pablo Neira Ayuso <pablo@netfilter.org> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/netlink.h> +#include <linux/netfilter.h> +#include <linux/netfilter/nf_tables.h> +#include <net/netfilter/nf_tables.h> + +void nf_dup_netdev_egress(const struct nft_pktinfo *pkt, int oif) +{ + struct net_device *dev; + struct sk_buff *skb; + + dev = dev_get_by_index_rcu(pkt->net, oif); + if (dev == NULL) + return; + + skb = skb_clone(pkt->skb, GFP_ATOMIC); + if (skb == NULL) + return; + + if (skb_mac_header_was_set(skb)) + skb_push(skb, skb->mac_len); + + skb->dev = dev; + skb_sender_cpu_clear(skb); + dev_queue_xmit(skb); +} +EXPORT_SYMBOL_GPL(nf_dup_netdev_egress); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Pablo Neira Ayuso <pablo@netfilter.org>"); |