![Florian Westphal](/assets/img/avatar_default.png)
We can use union for most of the temporary cruft (original ipv4/ipv6 address, source mac, physoutdev) since they're used during different stages of br netfilter traversal. Also get rid of the last two ->mask users. Shrinks struct from 48 to 32 on 64bit arch. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
77 lines
1.8 KiB
C
77 lines
1.8 KiB
C
#ifndef __LINUX_BRIDGE_NETFILTER_H
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#define __LINUX_BRIDGE_NETFILTER_H
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#include <uapi/linux/netfilter_bridge.h>
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#include <linux/skbuff.h>
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enum nf_br_hook_priorities {
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NF_BR_PRI_FIRST = INT_MIN,
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NF_BR_PRI_NAT_DST_BRIDGED = -300,
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NF_BR_PRI_FILTER_BRIDGED = -200,
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NF_BR_PRI_BRNF = 0,
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NF_BR_PRI_NAT_DST_OTHER = 100,
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NF_BR_PRI_FILTER_OTHER = 200,
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NF_BR_PRI_NAT_SRC = 300,
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NF_BR_PRI_LAST = INT_MAX,
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};
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#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
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int br_handle_frame_finish(struct sock *sk, struct sk_buff *skb);
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static inline void br_drop_fake_rtable(struct sk_buff *skb)
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{
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struct dst_entry *dst = skb_dst(skb);
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if (dst && (dst->flags & DST_FAKE_RTABLE))
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skb_dst_drop(skb);
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}
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static inline int nf_bridge_get_physinif(const struct sk_buff *skb)
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{
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struct nf_bridge_info *nf_bridge;
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if (skb->nf_bridge == NULL)
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return 0;
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nf_bridge = skb->nf_bridge;
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return nf_bridge->physindev ? nf_bridge->physindev->ifindex : 0;
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}
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static inline int nf_bridge_get_physoutif(const struct sk_buff *skb)
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{
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struct nf_bridge_info *nf_bridge;
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if (skb->nf_bridge == NULL)
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return 0;
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nf_bridge = skb->nf_bridge;
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return nf_bridge->physoutdev ? nf_bridge->physoutdev->ifindex : 0;
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}
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static inline struct net_device *
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nf_bridge_get_physindev(const struct sk_buff *skb)
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{
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return skb->nf_bridge ? skb->nf_bridge->physindev : NULL;
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}
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static inline struct net_device *
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nf_bridge_get_physoutdev(const struct sk_buff *skb)
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{
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return skb->nf_bridge ? skb->nf_bridge->physoutdev : NULL;
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}
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static inline bool nf_bridge_in_prerouting(const struct sk_buff *skb)
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{
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return skb->nf_bridge && skb->nf_bridge->in_prerouting;
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}
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#else
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#define br_drop_fake_rtable(skb) do { } while (0)
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static inline bool nf_bridge_in_prerouting(const struct sk_buff *skb)
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{
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return false;
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}
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#endif /* CONFIG_BRIDGE_NETFILTER */
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#endif
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