cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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netfilter_bridge.h (2128B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef __LINUX_BRIDGE_NETFILTER_H
      3#define __LINUX_BRIDGE_NETFILTER_H
      4
      5#include <uapi/linux/netfilter_bridge.h>
      6#include <linux/skbuff.h>
      7
      8struct nf_bridge_frag_data {
      9	char    mac[ETH_HLEN];
     10	bool    vlan_present;
     11	u16     vlan_tci;
     12	__be16  vlan_proto;
     13};
     14
     15#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
     16
     17int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
     18
     19static inline void br_drop_fake_rtable(struct sk_buff *skb)
     20{
     21	struct dst_entry *dst = skb_dst(skb);
     22
     23	if (dst && (dst->flags & DST_FAKE_RTABLE))
     24		skb_dst_drop(skb);
     25}
     26
     27static inline struct nf_bridge_info *
     28nf_bridge_info_get(const struct sk_buff *skb)
     29{
     30	return skb_ext_find(skb, SKB_EXT_BRIDGE_NF);
     31}
     32
     33static inline bool nf_bridge_info_exists(const struct sk_buff *skb)
     34{
     35	return skb_ext_exist(skb, SKB_EXT_BRIDGE_NF);
     36}
     37
     38static inline int nf_bridge_get_physinif(const struct sk_buff *skb)
     39{
     40	const struct nf_bridge_info *nf_bridge = nf_bridge_info_get(skb);
     41
     42	if (!nf_bridge)
     43		return 0;
     44
     45	return nf_bridge->physindev ? nf_bridge->physindev->ifindex : 0;
     46}
     47
     48static inline int nf_bridge_get_physoutif(const struct sk_buff *skb)
     49{
     50	const struct nf_bridge_info *nf_bridge = nf_bridge_info_get(skb);
     51
     52	if (!nf_bridge)
     53		return 0;
     54
     55	return nf_bridge->physoutdev ? nf_bridge->physoutdev->ifindex : 0;
     56}
     57
     58static inline struct net_device *
     59nf_bridge_get_physindev(const struct sk_buff *skb)
     60{
     61	const struct nf_bridge_info *nf_bridge = nf_bridge_info_get(skb);
     62
     63	return nf_bridge ? nf_bridge->physindev : NULL;
     64}
     65
     66static inline struct net_device *
     67nf_bridge_get_physoutdev(const struct sk_buff *skb)
     68{
     69	const struct nf_bridge_info *nf_bridge = nf_bridge_info_get(skb);
     70
     71	return nf_bridge ? nf_bridge->physoutdev : NULL;
     72}
     73
     74static inline bool nf_bridge_in_prerouting(const struct sk_buff *skb)
     75{
     76	const struct nf_bridge_info *nf_bridge = nf_bridge_info_get(skb);
     77
     78	return nf_bridge && nf_bridge->in_prerouting;
     79}
     80#else
     81#define br_drop_fake_rtable(skb)	        do { } while (0)
     82static inline bool nf_bridge_in_prerouting(const struct sk_buff *skb)
     83{
     84	return false;
     85}
     86#endif /* CONFIG_BRIDGE_NETFILTER */
     87
     88#endif