diff options
Diffstat (limited to 'include/linux/netfilter_bridge.h')
-rw-r--r-- | include/linux/netfilter_bridge.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/include/linux/netfilter_bridge.h b/include/linux/netfilter_bridge.h new file mode 100644 index 000000000..f980edfdd --- /dev/null +++ b/include/linux/netfilter_bridge.h @@ -0,0 +1,88 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __LINUX_BRIDGE_NETFILTER_H +#define __LINUX_BRIDGE_NETFILTER_H + +#include <uapi/linux/netfilter_bridge.h> +#include <linux/skbuff.h> + +struct nf_bridge_frag_data { + char mac[ETH_HLEN]; + bool vlan_present; + u16 vlan_tci; + __be16 vlan_proto; +}; + +#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) + +int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb); + +static inline void br_drop_fake_rtable(struct sk_buff *skb) +{ + struct dst_entry *dst = skb_dst(skb); + + if (dst && (dst->flags & DST_FAKE_RTABLE)) + skb_dst_drop(skb); +} + +static inline struct nf_bridge_info * +nf_bridge_info_get(const struct sk_buff *skb) +{ + return skb_ext_find(skb, SKB_EXT_BRIDGE_NF); +} + +static inline bool nf_bridge_info_exists(const struct sk_buff *skb) +{ + return skb_ext_exist(skb, SKB_EXT_BRIDGE_NF); +} + +static inline int nf_bridge_get_physinif(const struct sk_buff *skb) +{ + const struct nf_bridge_info *nf_bridge = nf_bridge_info_get(skb); + + if (!nf_bridge) + return 0; + + return nf_bridge->physindev ? nf_bridge->physindev->ifindex : 0; +} + +static inline int nf_bridge_get_physoutif(const struct sk_buff *skb) +{ + const struct nf_bridge_info *nf_bridge = nf_bridge_info_get(skb); + + if (!nf_bridge) + return 0; + + return nf_bridge->physoutdev ? nf_bridge->physoutdev->ifindex : 0; +} + +static inline struct net_device * +nf_bridge_get_physindev(const struct sk_buff *skb) +{ + const struct nf_bridge_info *nf_bridge = nf_bridge_info_get(skb); + + return nf_bridge ? nf_bridge->physindev : NULL; +} + +static inline struct net_device * +nf_bridge_get_physoutdev(const struct sk_buff *skb) +{ + const struct nf_bridge_info *nf_bridge = nf_bridge_info_get(skb); + + return nf_bridge ? nf_bridge->physoutdev : NULL; +} + +static inline bool nf_bridge_in_prerouting(const struct sk_buff *skb) +{ + const struct nf_bridge_info *nf_bridge = nf_bridge_info_get(skb); + + return nf_bridge && nf_bridge->in_prerouting; +} +#else +#define br_drop_fake_rtable(skb) do { } while (0) +static inline bool nf_bridge_in_prerouting(const struct sk_buff *skb) +{ + return false; +} +#endif /* CONFIG_BRIDGE_NETFILTER */ + +#endif |