/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _BR_NETFILTER_H_
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#define _BR_NETFILTER_H_
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#include <linux/netfilter.h>
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#include "../../../net/bridge/br_private.h"
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static inline struct nf_bridge_info *nf_bridge_alloc(struct sk_buff *skb)
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{
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#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
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struct nf_bridge_info *b = skb_ext_add(skb, SKB_EXT_BRIDGE_NF);
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if (b)
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memset(b, 0, sizeof(*b));
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return b;
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#else
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return NULL;
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#endif
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}
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void nf_bridge_update_protocol(struct sk_buff *skb);
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int br_nf_hook_thresh(unsigned int hook, struct net *net, struct sock *sk,
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struct sk_buff *skb, struct net_device *indev,
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struct net_device *outdev,
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int (*okfn)(struct net *, struct sock *,
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struct sk_buff *));
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unsigned int nf_bridge_encap_header_len(const struct sk_buff *skb);
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static inline void nf_bridge_push_encap_header(struct sk_buff *skb)
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{
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unsigned int len = nf_bridge_encap_header_len(skb);
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skb_push(skb, len);
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skb->network_header -= len;
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}
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int br_nf_pre_routing_finish_bridge(struct net *net, struct sock *sk, struct sk_buff *skb);
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static inline struct rtable *bridge_parent_rtable(const struct net_device *dev)
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{
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#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
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struct net_bridge_port *port;
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port = br_port_get_rcu(dev);
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return port ? &port->br->fake_rtable : NULL;
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#else
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return NULL;
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#endif
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}
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struct net_device *setup_pre_routing(struct sk_buff *skb,
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const struct net *net);
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#if IS_ENABLED(CONFIG_IPV6)
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int br_validate_ipv6(struct net *net, struct sk_buff *skb);
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unsigned int br_nf_pre_routing_ipv6(void *priv,
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struct sk_buff *skb,
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const struct nf_hook_state *state);
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#else
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static inline int br_validate_ipv6(struct net *net, struct sk_buff *skb)
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{
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return -1;
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}
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static inline unsigned int
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br_nf_pre_routing_ipv6(void *priv, struct sk_buff *skb,
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const struct nf_hook_state *state)
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{
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return NF_ACCEPT;
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}
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#endif
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#endif /* _BR_NETFILTER_H_ */
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