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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bridge_loop_avoidance.h (3493B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/* Copyright (C) B.A.T.M.A.N. contributors:
      3 *
      4 * Simon Wunderlich
      5 */
      6
      7#ifndef _NET_BATMAN_ADV_BLA_H_
      8#define _NET_BATMAN_ADV_BLA_H_
      9
     10#include "main.h"
     11
     12#include <linux/compiler.h>
     13#include <linux/netdevice.h>
     14#include <linux/netlink.h>
     15#include <linux/skbuff.h>
     16#include <linux/stddef.h>
     17#include <linux/types.h>
     18
     19/**
     20 * batadv_bla_is_loopdetect_mac() - check if the mac address is from a loop
     21 *  detect frame sent by bridge loop avoidance
     22 * @mac: mac address to check
     23 *
     24 * Return: true if the it looks like a loop detect frame
     25 * (mac starts with BA:BE), false otherwise
     26 */
     27static inline bool batadv_bla_is_loopdetect_mac(const uint8_t *mac)
     28{
     29	if (mac[0] == 0xba && mac[1] == 0xbe)
     30		return true;
     31
     32	return false;
     33}
     34
     35#ifdef CONFIG_BATMAN_ADV_BLA
     36bool batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb,
     37		   unsigned short vid, int packet_type);
     38bool batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb,
     39		   unsigned short vid);
     40bool batadv_bla_is_backbone_gw(struct sk_buff *skb,
     41			       struct batadv_orig_node *orig_node,
     42			       int hdr_size);
     43int batadv_bla_claim_dump(struct sk_buff *msg, struct netlink_callback *cb);
     44int batadv_bla_backbone_dump(struct sk_buff *msg, struct netlink_callback *cb);
     45bool batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv, u8 *orig,
     46				    unsigned short vid);
     47bool batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
     48				    struct sk_buff *skb);
     49void batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
     50				    struct batadv_hard_iface *primary_if,
     51				    struct batadv_hard_iface *oldif);
     52void batadv_bla_status_update(struct net_device *net_dev);
     53int batadv_bla_init(struct batadv_priv *bat_priv);
     54void batadv_bla_free(struct batadv_priv *bat_priv);
     55#ifdef CONFIG_BATMAN_ADV_DAT
     56bool batadv_bla_check_claim(struct batadv_priv *bat_priv, u8 *addr,
     57			    unsigned short vid);
     58#endif
     59#define BATADV_BLA_CRC_INIT	0
     60#else /* ifdef CONFIG_BATMAN_ADV_BLA */
     61
     62static inline bool batadv_bla_rx(struct batadv_priv *bat_priv,
     63				 struct sk_buff *skb, unsigned short vid,
     64				 int packet_type)
     65{
     66	return false;
     67}
     68
     69static inline bool batadv_bla_tx(struct batadv_priv *bat_priv,
     70				 struct sk_buff *skb, unsigned short vid)
     71{
     72	return false;
     73}
     74
     75static inline bool batadv_bla_is_backbone_gw(struct sk_buff *skb,
     76					     struct batadv_orig_node *orig_node,
     77					     int hdr_size)
     78{
     79	return false;
     80}
     81
     82static inline bool batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv,
     83						  u8 *orig, unsigned short vid)
     84{
     85	return false;
     86}
     87
     88static inline bool
     89batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
     90			       struct sk_buff *skb)
     91{
     92	return false;
     93}
     94
     95static inline void
     96batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
     97			       struct batadv_hard_iface *primary_if,
     98			       struct batadv_hard_iface *oldif)
     99{
    100}
    101
    102static inline int batadv_bla_init(struct batadv_priv *bat_priv)
    103{
    104	return 1;
    105}
    106
    107static inline void batadv_bla_free(struct batadv_priv *bat_priv)
    108{
    109}
    110
    111static inline int batadv_bla_claim_dump(struct sk_buff *msg,
    112					struct netlink_callback *cb)
    113{
    114	return -EOPNOTSUPP;
    115}
    116
    117static inline int batadv_bla_backbone_dump(struct sk_buff *msg,
    118					   struct netlink_callback *cb)
    119{
    120	return -EOPNOTSUPP;
    121}
    122
    123static inline
    124bool batadv_bla_check_claim(struct batadv_priv *bat_priv, u8 *addr,
    125			    unsigned short vid)
    126{
    127	return true;
    128}
    129
    130#endif /* ifdef CONFIG_BATMAN_ADV_BLA */
    131
    132#endif /* ifndef _NET_BATMAN_ADV_BLA_H_ */