1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * Linux ethernet bridge
4 *
5 * Authors:
6 * Lennert Buytenhek <buytenh@gnu.org>
7 */
8 #ifndef _LINUX_IF_BRIDGE_H
9 #define _LINUX_IF_BRIDGE_H
10
11
12 #include <linux/netdevice.h>
13 #include <uapi/linux/if_bridge.h>
14 #include <linux/bitops.h>
15
16 struct br_ip {
17 union {
18 __be32 ip4;
19 #if IS_ENABLED(CONFIG_IPV6)
20 struct in6_addr ip6;
21 #endif
22 } src;
23 union {
24 __be32 ip4;
25 #if IS_ENABLED(CONFIG_IPV6)
26 struct in6_addr ip6;
27 #endif
28 unsigned char mac_addr[ETH_ALEN];
29 } dst;
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
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)
49 #define BR_LEARNING_SYNC BIT(9)
50 #define BR_PROXYARP_WIFI BIT(10)
51 #define BR_MCAST_FLOOD BIT(11)
52 #define BR_MULTICAST_TO_UNICAST BIT(12)
53 #define BR_VLAN_TUNNEL BIT(13)
54 #define BR_BCAST_FLOOD BIT(14)
55 #define BR_NEIGH_SUPPRESS BIT(15)
56 #define BR_ISOLATED BIT(16)
57 #define BR_MRP_AWARE BIT(17)
58 #define BR_MRP_LOST_CONT BIT(18)
59 #define BR_MRP_LOST_IN_CONT BIT(19)
60 #define BR_TX_FWD_OFFLOAD BIT(20)
61 #define BR_PORT_LOCKED BIT(21)
62 #define BR_PORT_MAB BIT(22)
63 #define BR_NEIGH_VLAN_SUPPRESS BIT(23)
64
65 #define BR_DEFAULT_AGEING_TIME (300 * HZ)
66
67 struct net_bridge;
68 void brioctl_set(int (*hook)(struct net *net, struct net_bridge *br,
69 unsigned int cmd, struct ifreq *ifr,
70 void __user *uarg));
71 int br_ioctl_call(struct net *net, struct net_bridge *br, unsigned int cmd,
72 struct ifreq *ifr, void __user *uarg);
73
74 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING)
75 int br_multicast_list_adjacent(struct net_device *dev,
76 struct list_head *br_ip_list);
77 bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto);
78 bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto);
79 bool br_multicast_has_router_adjacent(struct net_device *dev, int proto);
80 bool br_multicast_enabled(const struct net_device *dev);
81 bool br_multicast_router(const struct net_device *dev);
82 #else
83 static inline int br_multicast_list_adjacent(struct net_device *dev,
84 struct list_head *br_ip_list)
85 {
86 return 0;
87 }
88 static inline bool br_multicast_has_querier_anywhere(struct net_device *dev,
89 int proto)
90 {
91 return false;
92 }
93 static inline bool br_multicast_has_querier_adjacent(struct net_device *dev,
94 int proto)
95 {
96 return false;
97 }
98
99 static inline bool br_multicast_has_router_adjacent(struct net_device *dev,
100 int proto)
101 {
102 return true;
103 }
104
105 static inline bool br_multicast_enabled(const struct net_device *dev)
106 {
107 return false;
108 }
109 static inline bool br_multicast_router(const struct net_device *dev)
110 {
111 return false;
112 }
113 #endif
114
115 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_VLAN_FILTERING)
116 bool br_vlan_enabled(const struct net_device *dev);
117 int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid);
118 int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid);
119 int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto);
120 int br_vlan_get_info(const struct net_device *dev, u16 vid,
121 struct bridge_vlan_info *p_vinfo);
122 int br_vlan_get_info_rcu(const struct net_device *dev, u16 vid,
123 struct bridge_vlan_info *p_vinfo);
124 bool br_mst_enabled(const struct net_device *dev);
125 int br_mst_get_info(const struct net_device *dev, u16 msti, unsigned long *vids);
126 int br_mst_get_state(const struct net_device *dev, u16 msti, u8 *state);
127 #else
128 static inline bool br_vlan_enabled(const struct net_device *dev)
129 {
130 return false;
131 }
132
133 static inline int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid)
134 {
135 return -EINVAL;
136 }
137
138 static inline int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto)
139 {
140 return -EINVAL;
141 }
142
143 static inline int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid)
144 {
145 return -EINVAL;
146 }
147
148 static inline int br_vlan_get_info(const struct net_device *dev, u16 vid,
149 struct bridge_vlan_info *p_vinfo)
150 {
151 return -EINVAL;
152 }
153
154 static inline int br_vlan_get_info_rcu(const struct net_device *dev, u16 vid,
155 struct bridge_vlan_info *p_vinfo)
156 {
157 return -EINVAL;
158 }
159
160 static inline bool br_mst_enabled(const struct net_device *dev)
161 {
162 return false;
163 }
164
165 static inline int br_mst_get_info(const struct net_device *dev, u16 msti,
166 unsigned long *vids)
167 {
168 return -EINVAL;
169 }
170 static inline int br_mst_get_state(const struct net_device *dev, u16 msti,
171 u8 *state)
172 {
173 return -EINVAL;
174 }
175 #endif
176
177 #if IS_ENABLED(CONFIG_BRIDGE)
178 struct net_device *br_fdb_find_port(const struct net_device *br_dev,
179 const unsigned char *addr,
180 __u16 vid);
181 void br_fdb_clear_offload(const struct net_device *dev, u16 vid);
182 bool br_port_flag_is_set(const struct net_device *dev, unsigned long flag);
183 u8 br_port_get_stp_state(const struct net_device *dev);
184 clock_t br_get_ageing_time(const struct net_device *br_dev);
185 #else
186 static inline struct net_device *
187 br_fdb_find_port(const struct net_device *br_dev,
188 const unsigned char *addr,
189 __u16 vid)
190 {
191 return NULL;
192 }
193
194 static inline void br_fdb_clear_offload(const struct net_device *dev, u16 vid)
195 {
196 }
197
198 static inline bool
199 br_port_flag_is_set(const struct net_device *dev, unsigned long flag)
200 {
201 return false;
202 }
203
204 static inline u8 br_port_get_stp_state(const struct net_device *dev)
205 {
206 return BR_STATE_DISABLED;
207 }
208
209 static inline clock_t br_get_ageing_time(const struct net_device *br_dev)
210 {
211 return 0;
212 }
213 #endif
214
215 #endif
216
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