projects / mirror_ubuntu-hirsute-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 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> | |
| be2861dc | 13 | #include <net/netfilter/nf_tables_offload.h> |
| a32770b1 | 14 | #include <net/netfilter/nf_dup_netdev.h> |
| 502061f8 | 15 | |
| 3bf32761 FW |
16 | static void nf_do_netdev_egress(struct sk_buff *skb, struct net_device *dev) |
| 17 | { | |
| 18 | if (skb_mac_header_was_set(skb)) | |
| 19 | skb_push(skb, skb->mac_len); | |
| 20 | ||
| 21 | skb->dev = dev; | |
| c77761c8 | 22 | skb->tstamp = 0; |
| 3bf32761 FW |
23 | dev_queue_xmit(skb); |
| 24 | } | |
| 25 | ||
| 26 | void nf_fwd_netdev_egress(const struct nft_pktinfo *pkt, int oif) | |
| 27 | { | |
| 28 | struct net_device *dev; | |
| 29 | ||
| 30 | dev = dev_get_by_index_rcu(nft_net(pkt), oif); | |
| 31 | if (!dev) { | |
| 32 | kfree_skb(pkt->skb); | |
| 33 | return; | |
| 34 | } | |
| 35 | ||
| 36 | nf_do_netdev_egress(pkt->skb, dev); | |
| 37 | } | |
| 38 | EXPORT_SYMBOL_GPL(nf_fwd_netdev_egress); | |
| 39 | ||
| 502061f8 PNA |
40 | void nf_dup_netdev_egress(const struct nft_pktinfo *pkt, int oif) |
| 41 | { | |
| 42 | struct net_device *dev; | |
| 43 | struct sk_buff *skb; | |
| 44 | ||
| 0e5a1c7e | 45 | dev = dev_get_by_index_rcu(nft_net(pkt), oif); |
| 502061f8 PNA |
46 | if (dev == NULL) |
| 47 | return; | |
| 48 | ||
| 49 | skb = skb_clone(pkt->skb, GFP_ATOMIC); | |
| 3bf32761 FW |
50 | if (skb) |
| 51 | nf_do_netdev_egress(skb, dev); | |
| 502061f8 PNA |
52 | } |
| 53 | EXPORT_SYMBOL_GPL(nf_dup_netdev_egress); | |
| 54 | ||
| be2861dc PNA |
55 | int nft_fwd_dup_netdev_offload(struct nft_offload_ctx *ctx, |
| 56 | struct nft_flow_rule *flow, | |
| 57 | enum flow_action_id id, int oif) | |
| 58 | { | |
| 59 | struct flow_action_entry *entry; | |
| 60 | struct net_device *dev; | |
| 61 | ||
| 62 | /* nft_flow_rule_destroy() releases the reference on this device. */ | |
| 63 | dev = dev_get_by_index(ctx->net, oif); | |
| 64 | if (!dev) | |
| 65 | return -EOPNOTSUPP; | |
| 66 | ||
| 67 | entry = &flow->rule->action.entries[ctx->num_actions++]; | |
| 68 | entry->id = id; | |
| 69 | entry->dev = dev; | |
| 70 | ||
| 71 | return 0; | |
| 72 | } | |
| 73 | EXPORT_SYMBOL_GPL(nft_fwd_dup_netdev_offload); | |
| 74 | ||
| 502061f8 PNA |
75 | MODULE_LICENSE("GPL"); |
| 76 | MODULE_AUTHOR("Pablo Neira Ayuso <pablo@netfilter.org>"); | |
| 4cacc395 | 77 | MODULE_DESCRIPTION("Netfilter packet duplication support"); |