[mirror_ubuntu-jammy-kernel.git] / net / batman-adv / bridge_loop_avoidance.h

/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (C) 2011-2019  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/stddef.h>
#include <linux/types.h>

struct net_device;
struct netlink_callback;
struct seq_file;
struct sk_buff;

/**
 * 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, bool is_bcast);
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_table_seq_print_text(struct seq_file *seq, void *offset);
int batadv_bla_claim_dump(struct sk_buff *msg, struct netlink_callback *cb);
int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq,
					     void *offset);
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);
int batadv_bla_claim_dump(struct sk_buff *msg, struct netlink_callback *cb);
#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,
				 bool is_bcast)
{
	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 int batadv_bla_claim_table_seq_print_text(struct seq_file *seq,
							void *offset)
{
	return 0;
}

static inline int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq,
							   void *offset)
{
	return 0;
}

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 */
7a79d717	2	/* Copyright (C) 2011-2019 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 SW	12	#include <linux/compiler.h>
d3e9768a SW	13	#include <linux/stddef.h>
1e2c2a4f SE	14	#include <linux/types.h>
1e2c2a4f SE	15
d68081a2	16	struct net_device;
04f3f5bf	17	struct netlink_callback;
1e2c2a4f SE	18	struct seq_file;
	19	struct sk_buff;
	20
d3e9768a	21	/**
7e9a8c2c SE	22	* batadv_bla_is_loopdetect_mac() - check if the mac address is from a loop
7e9a8c2c SE	23	* detect frame sent by bridge loop avoidance
d3e9768a SW	24	* @mac: mac address to check
	25	*
	26	* Return: true if the it looks like a loop detect frame
	27	* (mac starts with BA:BE), false otherwise
	28	*/
	29	static inline bool batadv_bla_is_loopdetect_mac(const uint8_t *mac)
	30	{
	31	if (mac[0] == 0xba && mac[1] == 0xbe)
	32	return true;
	33
	34	return false;
	35	}
	36
7a5cc242	37	#ifdef CONFIG_BATMAN_ADV_BLA
4b426b10 SE	38	bool batadv_bla_rx(struct batadv_priv bat_priv, struct sk_buff skb,
	39	unsigned short vid, bool is_bcast);
	40	bool batadv_bla_tx(struct batadv_priv bat_priv, struct sk_buff skb,
	41	unsigned short vid);
	42	bool batadv_bla_is_backbone_gw(struct sk_buff *skb,
	43	struct batadv_orig_node *orig_node,
	44	int hdr_size);
08adf151	45	int batadv_bla_claim_table_seq_print_text(struct seq_file seq, void offset);
04f3f5bf	46	int batadv_bla_claim_dump(struct sk_buff msg, struct netlink_callback cb);
536a23f1 SW	47	int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq,
536a23f1 SW	48	void *offset);
ea4152e1	49	int batadv_bla_backbone_dump(struct sk_buff msg, struct netlink_callback cb);
6b5e971a	50	bool batadv_bla_is_backbone_gw_orig(struct batadv_priv bat_priv, u8 orig,
cfd4f757	51	unsigned short vid);
4b426b10 SE	52	bool batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
4b426b10 SE	53	struct sk_buff *skb);
56303d34 SE	54	void batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
	55	struct batadv_hard_iface *primary_if,
	56	struct batadv_hard_iface *oldif);
d68081a2	57	void batadv_bla_status_update(struct net_device *net_dev);
56303d34 SE	58	int batadv_bla_init(struct batadv_priv *bat_priv);
56303d34 SE	59	void batadv_bla_free(struct batadv_priv *bat_priv);
04f3f5bf	60	int batadv_bla_claim_dump(struct sk_buff msg, struct netlink_callback cb);
00311de5 AP	61	#ifdef CONFIG_BATMAN_ADV_DAT
	62	bool batadv_bla_check_claim(struct batadv_priv bat_priv, u8 addr,
	63	unsigned short vid);
	64	#endif
3964f728	65	#define BATADV_BLA_CRC_INIT 0
7a5cc242 SW	66	#else /* ifdef CONFIG_BATMAN_ADV_BLA */
7a5cc242 SW	67
4b426b10 SE	68	static inline bool batadv_bla_rx(struct batadv_priv *bat_priv,
	69	struct sk_buff *skb, unsigned short vid,
	70	bool is_bcast)
7a5cc242	71	{
4b426b10	72	return false;
7a5cc242 SW	73	}
7a5cc242 SW	74
4b426b10 SE	75	static inline bool batadv_bla_tx(struct batadv_priv *bat_priv,
4b426b10 SE	76	struct sk_buff *skb, unsigned short vid)
7a5cc242	77	{
4b426b10	78	return false;
7a5cc242 SW	79	}
7a5cc242 SW	80
4b426b10 SE	81	static inline bool batadv_bla_is_backbone_gw(struct sk_buff *skb,
	82	struct batadv_orig_node *orig_node,
	83	int hdr_size)
7a5cc242	84	{
4b426b10	85	return false;
7a5cc242 SW	86	}
7a5cc242 SW	87
08adf151 SE	88	static inline int batadv_bla_claim_table_seq_print_text(struct seq_file *seq,
08adf151 SE	89	void *offset)
7a5cc242 SW	90	{
	91	return 0;
	92	}
	93
536a23f1 SW	94	static inline int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq,
	95	void *offset)
	96	{
	97	return 0;
	98	}
	99
cfd4f757	100	static inline bool batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv,
6b5e971a	101	u8 *orig, unsigned short vid)
7a5cc242	102	{
cfd4f757	103	return false;
7a5cc242 SW	104	}
7a5cc242 SW	105
4b426b10	106	static inline bool
56303d34	107	batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
004e86fc	108	struct sk_buff *skb)
7a5cc242	109	{
4b426b10	110	return false;
7a5cc242 SW	111	}
7a5cc242 SW	112
08adf151	113	static inline void
56303d34 SE	114	batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
	115	struct batadv_hard_iface *primary_if,
	116	struct batadv_hard_iface *oldif)
7a5cc242 SW	117	{
	118	}
	119
56303d34	120	static inline int batadv_bla_init(struct batadv_priv *bat_priv)
7a5cc242 SW	121	{
	122	return 1;
	123	}
	124
56303d34	125	static inline void batadv_bla_free(struct batadv_priv *bat_priv)
7a5cc242 SW	126	{
	127	}
	128
04f3f5bf AL	129	static inline int batadv_bla_claim_dump(struct sk_buff *msg,
	130	struct netlink_callback *cb)
	131	{
	132	return -EOPNOTSUPP;
	133	}
	134
ea4152e1 SW	135	static inline int batadv_bla_backbone_dump(struct sk_buff *msg,
	136	struct netlink_callback *cb)
	137	{
	138	return -EOPNOTSUPP;
	139	}
	140
00311de5 AP	141	static inline
	142	bool batadv_bla_check_claim(struct batadv_priv bat_priv, u8 addr,
	143	unsigned short vid)
	144	{
	145	return true;
	146	}
	147
7a5cc242	148	#endif /* ifdef CONFIG_BATMAN_ADV_BLA */
23721387 SW	149
23721387 SW	150	#endif /* ifndef _NET_BATMAN_ADV_BLA_H_ */