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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
502061f8 PNA |
2 | /* |
3 | * Copyright (c) 2015 Pablo Neira Ayuso <pablo@netfilter.org> | |
502061f8 PNA |
4 | */ |
5 | ||
6 | #include <linux/kernel.h> | |
7 | #include <linux/init.h> | |
8 | #include <linux/module.h> | |
9 | #include <linux/netlink.h> | |
10 | #include <linux/netfilter.h> | |
11 | #include <linux/netfilter/nf_tables.h> | |
12 | #include <net/netfilter/nf_tables.h> | |
a32770b1 | 13 | #include <net/netfilter/nf_dup_netdev.h> |
502061f8 | 14 | |
3bf32761 FW |
15 | static void nf_do_netdev_egress(struct sk_buff *skb, struct net_device *dev) |
16 | { | |
17 | if (skb_mac_header_was_set(skb)) | |
18 | skb_push(skb, skb->mac_len); | |
19 | ||
20 | skb->dev = dev; | |
21 | dev_queue_xmit(skb); | |
22 | } | |
23 | ||
24 | void nf_fwd_netdev_egress(const struct nft_pktinfo *pkt, int oif) | |
25 | { | |
26 | struct net_device *dev; | |
27 | ||
28 | dev = dev_get_by_index_rcu(nft_net(pkt), oif); | |
29 | if (!dev) { | |
30 | kfree_skb(pkt->skb); | |
31 | return; | |
32 | } | |
33 | ||
34 | nf_do_netdev_egress(pkt->skb, dev); | |
35 | } | |
36 | EXPORT_SYMBOL_GPL(nf_fwd_netdev_egress); | |
37 | ||
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38 | void nf_dup_netdev_egress(const struct nft_pktinfo *pkt, int oif) |
39 | { | |
40 | struct net_device *dev; | |
41 | struct sk_buff *skb; | |
42 | ||
0e5a1c7e | 43 | dev = dev_get_by_index_rcu(nft_net(pkt), oif); |
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44 | if (dev == NULL) |
45 | return; | |
46 | ||
47 | skb = skb_clone(pkt->skb, GFP_ATOMIC); | |
3bf32761 FW |
48 | if (skb) |
49 | nf_do_netdev_egress(skb, dev); | |
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50 | } |
51 | EXPORT_SYMBOL_GPL(nf_dup_netdev_egress); | |
52 | ||
53 | MODULE_LICENSE("GPL"); | |
54 | MODULE_AUTHOR("Pablo Neira Ayuso <pablo@netfilter.org>"); |