1 /* 2 * include/net/switchdev.h - Switch device API 3 * Copyright (c) 2014-2015 Jiri Pirko <jiri@resnulli.us> 4 * Copyright (c) 2014-2015 Scott Feldman <sfeldma@gmail.com> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 */ 11 #ifndef _LINUX_SWITCHDEV_H_ 12 #define _LINUX_SWITCHDEV_H_ 13 14 #include <linux/netdevice.h> 15 #include <linux/notifier.h> 16 #include <linux/list.h> 17 #include <net/ip_fib.h> 18 19 #define SWITCHDEV_F_NO_RECURSE BIT(0) 20 #define SWITCHDEV_F_SKIP_EOPNOTSUPP BIT(1) 21 #define SWITCHDEV_F_DEFER BIT(2) 22 23 struct switchdev_trans_item { 24 struct list_head list; 25 void *data; 26 void (*destructor)(const void *data); 27 }; 28 29 struct switchdev_trans { 30 struct list_head item_list; 31 bool ph_prepare; 32 }; 33 34 static inline bool switchdev_trans_ph_prepare(struct switchdev_trans *trans) 35 { 36 return trans && trans->ph_prepare; 37 } 38 39 static inline bool switchdev_trans_ph_commit(struct switchdev_trans *trans) 40 { 41 return trans && !trans->ph_prepare; 42 } 43 44 enum switchdev_attr_id { 45 SWITCHDEV_ATTR_ID_UNDEFINED, 46 SWITCHDEV_ATTR_ID_PORT_PARENT_ID, 47 SWITCHDEV_ATTR_ID_PORT_STP_STATE, 48 SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS, 49 SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT, 50 SWITCHDEV_ATTR_ID_PORT_MROUTER, 51 SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME, 52 SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING, 53 SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED, 54 SWITCHDEV_ATTR_ID_BRIDGE_MROUTER, 55 }; 56 57 struct switchdev_attr { 58 struct net_device *orig_dev; 59 enum switchdev_attr_id id; 60 u32 flags; 61 void *complete_priv; 62 void (*complete)(struct net_device *dev, int err, void *priv); 63 union { 64 struct netdev_phys_item_id ppid; /* PORT_PARENT_ID */ 65 u8 stp_state; /* PORT_STP_STATE */ 66 unsigned long brport_flags; /* PORT_BRIDGE_FLAGS */ 67 unsigned long brport_flags_support; /* PORT_BRIDGE_FLAGS_SUPPORT */ 68 bool mrouter; /* PORT_MROUTER */ 69 clock_t ageing_time; /* BRIDGE_AGEING_TIME */ 70 bool vlan_filtering; /* BRIDGE_VLAN_FILTERING */ 71 bool mc_disabled; /* MC_DISABLED */ 72 } u; 73 }; 74 75 enum switchdev_obj_id { 76 SWITCHDEV_OBJ_ID_UNDEFINED, 77 SWITCHDEV_OBJ_ID_PORT_VLAN, 78 SWITCHDEV_OBJ_ID_PORT_MDB, 79 SWITCHDEV_OBJ_ID_HOST_MDB, 80 }; 81 82 struct switchdev_obj { 83 struct net_device *orig_dev; 84 enum switchdev_obj_id id; 85 u32 flags; 86 void *complete_priv; 87 void (*complete)(struct net_device *dev, int err, void *priv); 88 }; 89 90 /* SWITCHDEV_OBJ_ID_PORT_VLAN */ 91 struct switchdev_obj_port_vlan { 92 struct switchdev_obj obj; 93 u16 flags; 94 u16 vid_begin; 95 u16 vid_end; 96 }; 97 98 #define SWITCHDEV_OBJ_PORT_VLAN(obj) \ 99 container_of(obj, struct switchdev_obj_port_vlan, obj) 100 101 /* SWITCHDEV_OBJ_ID_PORT_MDB */ 102 struct switchdev_obj_port_mdb { 103 struct switchdev_obj obj; 104 unsigned char addr[ETH_ALEN]; 105 u16 vid; 106 }; 107 108 #define SWITCHDEV_OBJ_PORT_MDB(obj) \ 109 container_of(obj, struct switchdev_obj_port_mdb, obj) 110 111 void switchdev_trans_item_enqueue(struct switchdev_trans *trans, 112 void *data, void (*destructor)(void const *), 113 struct switchdev_trans_item *tritem); 114 void *switchdev_trans_item_dequeue(struct switchdev_trans *trans); 115 116 typedef int switchdev_obj_dump_cb_t(struct switchdev_obj *obj); 117 118 /** 119 * struct switchdev_ops - switchdev operations 120 * 121 * @switchdev_port_attr_get: Get a port attribute (see switchdev_attr). 122 * 123 * @switchdev_port_attr_set: Set a port attribute (see switchdev_attr). 124 * 125 * @switchdev_port_obj_add: Add an object to port (see switchdev_obj_*). 126 * 127 * @switchdev_port_obj_del: Delete an object from port (see switchdev_obj_*). 128 */ 129 struct switchdev_ops { 130 int (*switchdev_port_attr_get)(struct net_device *dev, 131 struct switchdev_attr *attr); 132 int (*switchdev_port_attr_set)(struct net_device *dev, 133 const struct switchdev_attr *attr, 134 struct switchdev_trans *trans); 135 int (*switchdev_port_obj_add)(struct net_device *dev, 136 const struct switchdev_obj *obj, 137 struct switchdev_trans *trans); 138 int (*switchdev_port_obj_del)(struct net_device *dev, 139 const struct switchdev_obj *obj); 140 }; 141 142 enum switchdev_notifier_type { 143 SWITCHDEV_FDB_ADD_TO_BRIDGE = 1, 144 SWITCHDEV_FDB_DEL_TO_BRIDGE, 145 SWITCHDEV_FDB_ADD_TO_DEVICE, 146 SWITCHDEV_FDB_DEL_TO_DEVICE, 147 SWITCHDEV_FDB_OFFLOADED, 148 }; 149 150 struct switchdev_notifier_info { 151 struct net_device *dev; 152 }; 153 154 struct switchdev_notifier_fdb_info { 155 struct switchdev_notifier_info info; /* must be first */ 156 const unsigned char *addr; 157 u16 vid; 158 }; 159 160 static inline struct net_device * 161 switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info) 162 { 163 return info->dev; 164 } 165 166 #ifdef CONFIG_NET_SWITCHDEV 167 168 void switchdev_deferred_process(void); 169 int switchdev_port_attr_get(struct net_device *dev, 170 struct switchdev_attr *attr); 171 int switchdev_port_attr_set(struct net_device *dev, 172 const struct switchdev_attr *attr); 173 int switchdev_port_obj_add(struct net_device *dev, 174 const struct switchdev_obj *obj); 175 int switchdev_port_obj_del(struct net_device *dev, 176 const struct switchdev_obj *obj); 177 int register_switchdev_notifier(struct notifier_block *nb); 178 int unregister_switchdev_notifier(struct notifier_block *nb); 179 int call_switchdev_notifiers(unsigned long val, struct net_device *dev, 180 struct switchdev_notifier_info *info); 181 void switchdev_port_fwd_mark_set(struct net_device *dev, 182 struct net_device *group_dev, 183 bool joining); 184 185 bool switchdev_port_same_parent_id(struct net_device *a, 186 struct net_device *b); 187 188 #define SWITCHDEV_SET_OPS(netdev, ops) ((netdev)->switchdev_ops = (ops)) 189 #else 190 191 static inline void switchdev_deferred_process(void) 192 { 193 } 194 195 static inline int switchdev_port_attr_get(struct net_device *dev, 196 struct switchdev_attr *attr) 197 { 198 return -EOPNOTSUPP; 199 } 200 201 static inline int switchdev_port_attr_set(struct net_device *dev, 202 const struct switchdev_attr *attr) 203 { 204 return -EOPNOTSUPP; 205 } 206 207 static inline int switchdev_port_obj_add(struct net_device *dev, 208 const struct switchdev_obj *obj) 209 { 210 return -EOPNOTSUPP; 211 } 212 213 static inline int switchdev_port_obj_del(struct net_device *dev, 214 const struct switchdev_obj *obj) 215 { 216 return -EOPNOTSUPP; 217 } 218 219 static inline int register_switchdev_notifier(struct notifier_block *nb) 220 { 221 return 0; 222 } 223 224 static inline int unregister_switchdev_notifier(struct notifier_block *nb) 225 { 226 return 0; 227 } 228 229 static inline int call_switchdev_notifiers(unsigned long val, 230 struct net_device *dev, 231 struct switchdev_notifier_info *info) 232 { 233 return NOTIFY_DONE; 234 } 235 236 static inline bool switchdev_port_same_parent_id(struct net_device *a, 237 struct net_device *b) 238 { 239 return false; 240 } 241 242 #define SWITCHDEV_SET_OPS(netdev, ops) do {} while (0) 243 244 #endif 245 246 #endif /* _LINUX_SWITCHDEV_H_ */ 247