[mirror_ubuntu-jammy-kernel.git] / include / linux / if_bridge.h

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 *	Linux ethernet bridge
 *
 *	Authors:
 *	Lennert Buytenhek		<buytenh@gnu.org>
 */
#ifndef _LINUX_IF_BRIDGE_H
#define _LINUX_IF_BRIDGE_H


#include <linux/netdevice.h>
#include <uapi/linux/if_bridge.h>
#include <linux/bitops.h>

struct br_ip {
	union {
		__be32	ip4;
#if IS_ENABLED(CONFIG_IPV6)
		struct in6_addr ip6;
#endif
	} src;
	union {
		__be32	ip4;
#if IS_ENABLED(CONFIG_IPV6)
		struct in6_addr ip6;
#endif
		unsigned char	mac_addr[ETH_ALEN];
	} dst;
	__be16		proto;
	__u16           vid;
};

struct br_ip_list {
	struct list_head list;
	struct br_ip addr;
};

#define BR_HAIRPIN_MODE		BIT(0)
#define BR_BPDU_GUARD		BIT(1)
#define BR_ROOT_BLOCK		BIT(2)
#define BR_MULTICAST_FAST_LEAVE	BIT(3)
#define BR_ADMIN_COST		BIT(4)
#define BR_LEARNING		BIT(5)
#define BR_FLOOD		BIT(6)
#define BR_AUTO_MASK		(BR_FLOOD | BR_LEARNING)
#define BR_PROMISC		BIT(7)
#define BR_PROXYARP		BIT(8)
#define BR_LEARNING_SYNC	BIT(9)
#define BR_PROXYARP_WIFI	BIT(10)
#define BR_MCAST_FLOOD		BIT(11)
#define BR_MULTICAST_TO_UNICAST	BIT(12)
#define BR_VLAN_TUNNEL		BIT(13)
#define BR_BCAST_FLOOD		BIT(14)
#define BR_NEIGH_SUPPRESS	BIT(15)
#define BR_ISOLATED		BIT(16)
#define BR_MRP_AWARE		BIT(17)
#define BR_MRP_LOST_CONT	BIT(18)
#define BR_MRP_LOST_IN_CONT	BIT(19)
#define BR_TX_FWD_OFFLOAD	BIT(20)

#define BR_DEFAULT_AGEING_TIME	(300 * HZ)

struct net_bridge;
void brioctl_set(int (*hook)(struct net *net, struct net_bridge *br,
			     unsigned int cmd, struct ifreq *ifr,
			     void __user *uarg));
int br_ioctl_call(struct net *net, struct net_bridge *br, unsigned int cmd,
		  struct ifreq *ifr, void __user *uarg);

#if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING)
int br_multicast_list_adjacent(struct net_device *dev,
			       struct list_head *br_ip_list);
bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto);
bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto);
bool br_multicast_has_router_adjacent(struct net_device *dev, int proto);
bool br_multicast_enabled(const struct net_device *dev);
bool br_multicast_router(const struct net_device *dev);
#else
static inline int br_multicast_list_adjacent(struct net_device *dev,
					     struct list_head *br_ip_list)
{
	return 0;
}
static inline bool br_multicast_has_querier_anywhere(struct net_device *dev,
						     int proto)
{
	return false;
}
static inline bool br_multicast_has_querier_adjacent(struct net_device *dev,
						     int proto)
{
	return false;
}

static inline bool br_multicast_has_router_adjacent(struct net_device *dev,
						    int proto)
{
	return true;
}

static inline bool br_multicast_enabled(const struct net_device *dev)
{
	return false;
}
static inline bool br_multicast_router(const struct net_device *dev)
{
	return false;
}
#endif

#if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_VLAN_FILTERING)
bool br_vlan_enabled(const struct net_device *dev);
int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid);
int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid);
int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto);
int br_vlan_get_info(const struct net_device *dev, u16 vid,
		     struct bridge_vlan_info *p_vinfo);
int br_vlan_get_info_rcu(const struct net_device *dev, u16 vid,
			 struct bridge_vlan_info *p_vinfo);
#else
static inline bool br_vlan_enabled(const struct net_device *dev)
{
	return false;
}

static inline int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid)
{
	return -EINVAL;
}

static inline int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto)
{
	return -EINVAL;
}

static inline int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid)
{
	return -EINVAL;
}

static inline int br_vlan_get_info(const struct net_device *dev, u16 vid,
				   struct bridge_vlan_info *p_vinfo)
{
	return -EINVAL;
}

static inline int br_vlan_get_info_rcu(const struct net_device *dev, u16 vid,
				       struct bridge_vlan_info *p_vinfo)
{
	return -EINVAL;
}
#endif

#if IS_ENABLED(CONFIG_BRIDGE)
struct net_device *br_fdb_find_port(const struct net_device *br_dev,
				    const unsigned char *addr,
				    __u16 vid);
void br_fdb_clear_offload(const struct net_device *dev, u16 vid);
bool br_port_flag_is_set(const struct net_device *dev, unsigned long flag);
u8 br_port_get_stp_state(const struct net_device *dev);
clock_t br_get_ageing_time(const struct net_device *br_dev);
#else
static inline struct net_device *
br_fdb_find_port(const struct net_device *br_dev,
		 const unsigned char *addr,
		 __u16 vid)
{
	return NULL;
}

static inline void br_fdb_clear_offload(const struct net_device *dev, u16 vid)
{
}

static inline bool
br_port_flag_is_set(const struct net_device *dev, unsigned long flag)
{
	return false;
}

static inline u8 br_port_get_stp_state(const struct net_device *dev)
{
	return BR_STATE_DISABLED;
}

static inline clock_t br_get_ageing_time(const struct net_device *br_dev)
{
	return 0;
}
#endif

#endif
Commit	Line	Data
2874c5fd	1	/* SPDX-License-Identifier: GPL-2.0-or-later */
1da177e4 LT	2	/*
	3	* Linux ethernet bridge
	4	*
	5	* Authors:
	6	* Lennert Buytenhek <buytenh@gnu.org>
1da177e4	7	*/
1da177e4 LT	8	#ifndef _LINUX_IF_BRIDGE_H
	9	#define _LINUX_IF_BRIDGE_H
	10
1da177e4 LT	11
1da177e4 LT	12	#include <linux/netdevice.h>
607ca46e	13	#include <uapi/linux/if_bridge.h>
065c212a	14	#include <linux/bitops.h>
1da177e4	15
07f8ac4a LL	16	struct br_ip {
	17	union {
	18	__be32 ip4;
	19	#if IS_ENABLED(CONFIG_IPV6)
	20	struct in6_addr ip6;
e1ac1185 NA	21	#endif
	22	} src;
	23	union {
	24	__be32 ip4;
	25	#if IS_ENABLED(CONFIG_IPV6)
	26	struct in6_addr ip6;
07f8ac4a	27	#endif
955062b0	28	unsigned char mac_addr[ETH_ALEN];
eab3227b	29	} dst;
07f8ac4a LL	30	__be16 proto;
	31	__u16 vid;
	32	};
	33
	34	struct br_ip_list {
	35	struct list_head list;
	36	struct br_ip addr;
	37	};
	38
065c212a SF	39	#define BR_HAIRPIN_MODE BIT(0)
	40	#define BR_BPDU_GUARD BIT(1)
	41	#define BR_ROOT_BLOCK BIT(2)
	42	#define BR_MULTICAST_FAST_LEAVE BIT(3)
	43	#define BR_ADMIN_COST BIT(4)
	44	#define BR_LEARNING BIT(5)
	45	#define BR_FLOOD BIT(6)
	46	#define BR_AUTO_MASK (BR_FLOOD \| BR_LEARNING)
	47	#define BR_PROMISC BIT(7)
	48	#define BR_PROXYARP BIT(8)
efacacda	49	#define BR_LEARNING_SYNC BIT(9)
842a9ae0	50	#define BR_PROXYARP_WIFI BIT(10)
b6cb5ac8	51	#define BR_MCAST_FLOOD BIT(11)
6db6f0ea	52	#define BR_MULTICAST_TO_UNICAST BIT(12)
b3c7ef0a	53	#define BR_VLAN_TUNNEL BIT(13)
99f906e9	54	#define BR_BCAST_FLOOD BIT(14)
821f1b21	55	#define BR_NEIGH_SUPPRESS BIT(15)
7d850abd	56	#define BR_ISOLATED BIT(16)
4b8d7d4c HV	57	#define BR_MRP_AWARE BIT(17)
4b8d7d4c HV	58	#define BR_MRP_LOST_CONT BIT(18)
43364ef1	59	#define BR_MRP_LOST_IN_CONT BIT(19)
47211192	60	#define BR_TX_FWD_OFFLOAD BIT(20)
065c212a	61
a79e88d9 SF	62	#define BR_DEFAULT_AGEING_TIME (300 * HZ)
a79e88d9 SF	63
ad2f99ae AB	64	struct net_bridge;
	65	void brioctl_set(int (hook)(struct net net, struct net_bridge *br,
	66	unsigned int cmd, struct ifreq *ifr,
	67	void __user *uarg));
	68	int br_ioctl_call(struct net net, struct net_bridge br, unsigned int cmd,
	69	struct ifreq ifr, void __user uarg);
a386f990	70
f941a6d9	71	#if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING)
07f8ac4a LL	72	int br_multicast_list_adjacent(struct net_device *dev,
07f8ac4a LL	73	struct list_head *br_ip_list);
c34963e2	74	bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto);
2cd41431	75	bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto);
3b85f9ba	76	bool br_multicast_has_router_adjacent(struct net_device *dev, int proto);
9341b988	77	bool br_multicast_enabled(const struct net_device *dev);
0912bda4	78	bool br_multicast_router(const struct net_device *dev);
f941a6d9 LL	79	#else
	80	static inline int br_multicast_list_adjacent(struct net_device *dev,
	81	struct list_head *br_ip_list)
	82	{
	83	return 0;
	84	}
c34963e2 LL	85	static inline bool br_multicast_has_querier_anywhere(struct net_device *dev,
	86	int proto)
	87	{
	88	return false;
	89	}
f941a6d9 LL	90	static inline bool br_multicast_has_querier_adjacent(struct net_device *dev,
	91	int proto)
	92	{
	93	return false;
	94	}
3b85f9ba LL	95
	96	static inline bool br_multicast_has_router_adjacent(struct net_device *dev,
	97	int proto)
	98	{
	99	return true;
	100	}
	101
9341b988 IS	102	static inline bool br_multicast_enabled(const struct net_device *dev)
	103	{
	104	return false;
	105	}
0912bda4 YG	106	static inline bool br_multicast_router(const struct net_device *dev)
	107	{
	108	return false;
	109	}
f941a6d9	110	#endif
1da177e4	111
1f51445a IS	112	#if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_VLAN_FILTERING)
1f51445a IS	113	bool br_vlan_enabled(const struct net_device *dev);
4d4fd361	114	int br_vlan_get_pvid(const struct net_device dev, u16 p_pvid);
7582f5b7	115	int br_vlan_get_pvid_rcu(const struct net_device dev, u16 p_pvid);
31aed46f	116	int br_vlan_get_proto(const struct net_device dev, u16 p_proto);
4d4fd361 PM	117	int br_vlan_get_info(const struct net_device *dev, u16 vid,
4d4fd361 PM	118	struct bridge_vlan_info *p_vinfo);
ee80dd2e VO	119	int br_vlan_get_info_rcu(const struct net_device *dev, u16 vid,
ee80dd2e VO	120	struct bridge_vlan_info *p_vinfo);
1f51445a IS	121	#else
	122	static inline bool br_vlan_enabled(const struct net_device *dev)
	123	{
	124	return false;
	125	}
4d4fd361 PM	126
	127	static inline int br_vlan_get_pvid(const struct net_device dev, u16 p_pvid)
	128	{
000244d3	129	return -EINVAL;
4d4fd361 PM	130	}
4d4fd361 PM	131
31aed46f	132	static inline int br_vlan_get_proto(const struct net_device dev, u16 p_proto)
	133	{
	134	return -EINVAL;
	135	}
	136
7582f5b7 PNA	137	static inline int br_vlan_get_pvid_rcu(const struct net_device dev, u16 p_pvid)
	138	{
	139	return -EINVAL;
	140	}
	141
4d4fd361 PM	142	static inline int br_vlan_get_info(const struct net_device *dev, u16 vid,
4d4fd361 PM	143	struct bridge_vlan_info *p_vinfo)
ee80dd2e VO	144	{
	145	return -EINVAL;
	146	}
	147
	148	static inline int br_vlan_get_info_rcu(const struct net_device *dev, u16 vid,
	149	struct bridge_vlan_info *p_vinfo)
4d4fd361	150	{
000244d3	151	return -EINVAL;
4d4fd361 PM	152	}
	153	#endif
	154
	155	#if IS_ENABLED(CONFIG_BRIDGE)
	156	struct net_device br_fdb_find_port(const struct net_device br_dev,
	157	const unsigned char *addr,
	158	__u16 vid);
43920edf	159	void br_fdb_clear_offload(const struct net_device *dev, u16 vid);
085ddc87	160	bool br_port_flag_is_set(const struct net_device *dev, unsigned long flag);
c0e715bb	161	u8 br_port_get_stp_state(const struct net_device *dev);
bdf123b4	162	clock_t br_get_ageing_time(const struct net_device *br_dev);
4d4fd361 PM	163	#else
	164	static inline struct net_device *
	165	br_fdb_find_port(const struct net_device *br_dev,
	166	const unsigned char *addr,
	167	__u16 vid)
	168	{
	169	return NULL;
	170	}
43920edf PM	171
	172	static inline void br_fdb_clear_offload(const struct net_device *dev, u16 vid)
	173	{
	174	}
	175
085ddc87 IS	176	static inline bool
	177	br_port_flag_is_set(const struct net_device *dev, unsigned long flag)
	178	{
	179	return false;
	180	}
c0e715bb VO	181
	182	static inline u8 br_port_get_stp_state(const struct net_device *dev)
	183	{
	184	return BR_STATE_DISABLED;
	185	}
f1d42ea1	186
bdf123b4	187	static inline clock_t br_get_ageing_time(const struct net_device *br_dev)
f1d42ea1 VO	188	{
	189	return 0;
	190	}
1f51445a IS	191	#endif
1f51445a IS	192
1da177e4	193	#endif