[linux-block.git] / net / batman-adv / bridge_loop_avoidance.h

/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (C) B.A.T.M.A.N. contributors:
 *
 * Simon Wunderlich
 */

#ifndef _NET_BATMAN_ADV_BLA_H_
#define _NET_BATMAN_ADV_BLA_H_

#include "main.h"

#include <linux/compiler.h>
#include <linux/netdevice.h>
#include <linux/netlink.h>
#include <linux/skbuff.h>
#include <linux/stddef.h>
#include <linux/types.h>

/**
 * batadv_bla_is_loopdetect_mac() - check if the mac address is from a loop
 *  detect frame sent by bridge loop avoidance
 * @mac: mac address to check
 *
 * Return: true if the it looks like a loop detect frame
 * (mac starts with BA:BE), false otherwise
 */
static inline bool batadv_bla_is_loopdetect_mac(const uint8_t *mac)
{
	if (mac[0] == 0xba && mac[1] == 0xbe)
		return true;

	return false;
}

#ifdef CONFIG_BATMAN_ADV_BLA
bool batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb,
		   unsigned short vid, int packet_type);
bool batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb,
		   unsigned short vid);
bool batadv_bla_is_backbone_gw(struct sk_buff *skb,
			       struct batadv_orig_node *orig_node,
			       int hdr_size);
int batadv_bla_claim_dump(struct sk_buff *msg, struct netlink_callback *cb);
int batadv_bla_backbone_dump(struct sk_buff *msg, struct netlink_callback *cb);
bool batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv, u8 *orig,
				    unsigned short vid);
bool batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
				    struct sk_buff *skb);
void batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
				    struct batadv_hard_iface *primary_if,
				    struct batadv_hard_iface *oldif);
void batadv_bla_status_update(struct net_device *net_dev);
int batadv_bla_init(struct batadv_priv *bat_priv);
void batadv_bla_free(struct batadv_priv *bat_priv);
#ifdef CONFIG_BATMAN_ADV_DAT
bool batadv_bla_check_claim(struct batadv_priv *bat_priv, u8 *addr,
			    unsigned short vid);
#endif
#define BATADV_BLA_CRC_INIT	0
#else /* ifdef CONFIG_BATMAN_ADV_BLA */

static inline bool batadv_bla_rx(struct batadv_priv *bat_priv,
				 struct sk_buff *skb, unsigned short vid,
				 int packet_type)
{
	return false;
}

static inline bool batadv_bla_tx(struct batadv_priv *bat_priv,
				 struct sk_buff *skb, unsigned short vid)
{
	return false;
}

static inline bool batadv_bla_is_backbone_gw(struct sk_buff *skb,
					     struct batadv_orig_node *orig_node,
					     int hdr_size)
{
	return false;
}

static inline bool batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv,
						  u8 *orig, unsigned short vid)
{
	return false;
}

static inline bool
batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
			       struct sk_buff *skb)
{
	return false;
}

static inline void
batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
			       struct batadv_hard_iface *primary_if,
			       struct batadv_hard_iface *oldif)
{
}

static inline int batadv_bla_init(struct batadv_priv *bat_priv)
{
	return 1;
}

static inline void batadv_bla_free(struct batadv_priv *bat_priv)
{
}

static inline int batadv_bla_claim_dump(struct sk_buff *msg,
					struct netlink_callback *cb)
{
	return -EOPNOTSUPP;
}

static inline int batadv_bla_backbone_dump(struct sk_buff *msg,
					   struct netlink_callback *cb)
{
	return -EOPNOTSUPP;
}

static inline
bool batadv_bla_check_claim(struct batadv_priv *bat_priv, u8 *addr,
			    unsigned short vid)
{
	return true;
}

#endif /* ifdef CONFIG_BATMAN_ADV_BLA */

#endif /* ifndef _NET_BATMAN_ADV_BLA_H_ */
Commit	Line	Data
7db7d9f3	1	/* SPDX-License-Identifier: GPL-2.0 */
cfa55c6d	2	/* Copyright (C) B.A.T.M.A.N. contributors:
23721387 SW	3	*
23721387 SW	4	* Simon Wunderlich
23721387 SW	5	*/
	6
	7	#ifndef _NET_BATMAN_ADV_BLA_H_
	8	#define _NET_BATMAN_ADV_BLA_H_
	9
1e2c2a4f SE	10	#include "main.h"
1e2c2a4f SE	11
d3e9768a	12	#include <linux/compiler.h>
68a600de SE	13	#include <linux/netdevice.h>
68a600de SE	14	#include <linux/netlink.h>
68a600de	15	#include <linux/skbuff.h>
d3e9768a	16	#include <linux/stddef.h>
1e2c2a4f SE	17	#include <linux/types.h>
1e2c2a4f SE	18
d3e9768a	19	/**
7e9a8c2c SE	20	* batadv_bla_is_loopdetect_mac() - check if the mac address is from a loop
7e9a8c2c SE	21	* detect frame sent by bridge loop avoidance
d3e9768a SW	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	*/
	27	static 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
7a5cc242	35	#ifdef CONFIG_BATMAN_ADV_BLA
4b426b10	36	bool batadv_bla_rx(struct batadv_priv bat_priv, struct sk_buff skb,
74c09b72	37	unsigned short vid, int packet_type);
4b426b10 SE	38	bool batadv_bla_tx(struct batadv_priv bat_priv, struct sk_buff skb,
	39	unsigned short vid);
	40	bool batadv_bla_is_backbone_gw(struct sk_buff *skb,
	41	struct batadv_orig_node *orig_node,
	42	int hdr_size);
04f3f5bf	43	int batadv_bla_claim_dump(struct sk_buff msg, struct netlink_callback cb);
ea4152e1	44	int batadv_bla_backbone_dump(struct sk_buff msg, struct netlink_callback cb);
6b5e971a	45	bool batadv_bla_is_backbone_gw_orig(struct batadv_priv bat_priv, u8 orig,
cfd4f757	46	unsigned short vid);
4b426b10 SE	47	bool batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
4b426b10 SE	48	struct sk_buff *skb);
56303d34 SE	49	void batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
	50	struct batadv_hard_iface *primary_if,
	51	struct batadv_hard_iface *oldif);
d68081a2	52	void batadv_bla_status_update(struct net_device *net_dev);
56303d34 SE	53	int batadv_bla_init(struct batadv_priv *bat_priv);
56303d34 SE	54	void batadv_bla_free(struct batadv_priv *bat_priv);
00311de5 AP	55	#ifdef CONFIG_BATMAN_ADV_DAT
	56	bool batadv_bla_check_claim(struct batadv_priv bat_priv, u8 addr,
	57	unsigned short vid);
	58	#endif
3964f728	59	#define BATADV_BLA_CRC_INIT 0
7a5cc242 SW	60	#else /* ifdef CONFIG_BATMAN_ADV_BLA */
7a5cc242 SW	61
4b426b10 SE	62	static inline bool batadv_bla_rx(struct batadv_priv *bat_priv,
4b426b10 SE	63	struct sk_buff *skb, unsigned short vid,
74c09b72	64	int packet_type)
7a5cc242	65	{
4b426b10	66	return false;
7a5cc242 SW	67	}
7a5cc242 SW	68
4b426b10 SE	69	static inline bool batadv_bla_tx(struct batadv_priv *bat_priv,
4b426b10 SE	70	struct sk_buff *skb, unsigned short vid)
7a5cc242	71	{
4b426b10	72	return false;
7a5cc242 SW	73	}
7a5cc242 SW	74
4b426b10 SE	75	static inline bool batadv_bla_is_backbone_gw(struct sk_buff *skb,
	76	struct batadv_orig_node *orig_node,
	77	int hdr_size)
7a5cc242	78	{
4b426b10	79	return false;
7a5cc242 SW	80	}
7a5cc242 SW	81
cfd4f757	82	static inline bool batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv,
6b5e971a	83	u8 *orig, unsigned short vid)
7a5cc242	84	{
cfd4f757	85	return false;
7a5cc242 SW	86	}
7a5cc242 SW	87
4b426b10	88	static inline bool
56303d34	89	batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
004e86fc	90	struct sk_buff *skb)
7a5cc242	91	{
4b426b10	92	return false;
7a5cc242 SW	93	}
7a5cc242 SW	94
08adf151	95	static inline void
56303d34 SE	96	batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
	97	struct batadv_hard_iface *primary_if,
	98	struct batadv_hard_iface *oldif)
7a5cc242 SW	99	{
	100	}
	101
56303d34	102	static inline int batadv_bla_init(struct batadv_priv *bat_priv)
7a5cc242 SW	103	{
	104	return 1;
	105	}
	106
56303d34	107	static inline void batadv_bla_free(struct batadv_priv *bat_priv)
7a5cc242 SW	108	{
	109	}
	110
04f3f5bf AL	111	static inline int batadv_bla_claim_dump(struct sk_buff *msg,
	112	struct netlink_callback *cb)
	113	{
	114	return -EOPNOTSUPP;
	115	}
	116
ea4152e1 SW	117	static inline int batadv_bla_backbone_dump(struct sk_buff *msg,
	118	struct netlink_callback *cb)
	119	{
	120	return -EOPNOTSUPP;
	121	}
	122
00311de5 AP	123	static inline
	124	bool batadv_bla_check_claim(struct batadv_priv bat_priv, u8 addr,
	125	unsigned short vid)
	126	{
	127	return true;
	128	}
	129
7a5cc242	130	#endif /* ifdef CONFIG_BATMAN_ADV_BLA */
23721387 SW	131
23721387 SW	132	#endif /* ifndef _NET_BATMAN_ADV_BLA_H_ */