diff options
| author | Florian Westphal <fw@strlen.de> | 2016-11-28 11:40:06 +0100 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2016-12-06 21:48:22 +0100 |
| commit | 3bf3276119455bd0fc7a7e31be2823118e613842 (patch) | |
| tree | 5be317b6b8a00df0b63beb8b0df5345af519922e /net/netfilter/nf_dup_netdev.c | |
| parent | df122f58b834b24c27d7e2ac02a4910d3e56f6ae (diff) | |
| download | linux-3bf3276119455bd0fc7a7e31be2823118e613842.tar.gz | |
netfilter: add and use nf_fwd_netdev_egress
... so we can use current skb instead of working with a clone.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/netfilter/nf_dup_netdev.c')
| -rw-r--r-- | net/netfilter/nf_dup_netdev.c | 33 |
1 files changed, 25 insertions, 8 deletions
diff --git a/net/netfilter/nf_dup_netdev.c b/net/netfilter/nf_dup_netdev.c index 44ae986c383f13..c9d7f95768ab35 100644 --- a/net/netfilter/nf_dup_netdev.c +++ b/net/netfilter/nf_dup_netdev.c @@ -14,6 +14,29 @@ #include <linux/netfilter/nf_tables.h> #include <net/netfilter/nf_tables.h> +static void nf_do_netdev_egress(struct sk_buff *skb, struct net_device *dev) +{ + if (skb_mac_header_was_set(skb)) + skb_push(skb, skb->mac_len); + + skb->dev = dev; + dev_queue_xmit(skb); +} + +void nf_fwd_netdev_egress(const struct nft_pktinfo *pkt, int oif) +{ + struct net_device *dev; + + dev = dev_get_by_index_rcu(nft_net(pkt), oif); + if (!dev) { + kfree_skb(pkt->skb); + return; + } + + nf_do_netdev_egress(pkt->skb, dev); +} +EXPORT_SYMBOL_GPL(nf_fwd_netdev_egress); + void nf_dup_netdev_egress(const struct nft_pktinfo *pkt, int oif) { struct net_device *dev; @@ -24,14 +47,8 @@ void nf_dup_netdev_egress(const struct nft_pktinfo *pkt, int oif) 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; - dev_queue_xmit(skb); + if (skb) + nf_do_netdev_egress(skb, dev); } EXPORT_SYMBOL_GPL(nf_dup_netdev_egress); |