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 }; 55 56 struct switchdev_attr { 57 struct net_device *orig_dev; 58 enum switchdev_attr_id id; 59 u32 flags; 60 void *complete_priv; 61 void (*complete)(struct net_device *dev, int err, void *priv); 62 union { 63 struct netdev_phys_item_id ppid; /* PORT_PARENT_ID */ 64 u8 stp_state; /* PORT_STP_STATE */ 65 unsigned long brport_flags; /* PORT_BRIDGE_FLAGS */ 66 unsigned long brport_flags_support; /* PORT_BRIDGE_FLAGS_SUPPORT */ 67 bool mrouter; /* PORT_MROUTER */ 68 clock_t ageing_time; /* BRIDGE_AGEING_TIME */ 69 bool vlan_filtering; /* BRIDGE_VLAN_FILTERING */ 70 bool mc_disabled; /* MC_DISABLED */ 71 } u; 72 }; 73 74 enum switchdev_obj_id { 75 SWITCHDEV_OBJ_ID_UNDEFINED, 76 SWITCHDEV_OBJ_ID_PORT_VLAN, 77 SWITCHDEV_OBJ_ID_PORT_MDB, 78 }; 79 80 struct switchdev_obj { 81 struct net_device *orig_dev; 82 enum switchdev_obj_id id; 83 u32 flags; 84 void *complete_priv; 85 void (*complete)(struct net_device *dev, int err, void *priv); 86 }; 87 88 /* SWITCHDEV_OBJ_ID_PORT_VLAN */ 89 struct switchdev_obj_port_vlan { 90 struct switchdev_obj obj; 91 u16 flags; 92 u16 vid_begin; 93 u16 vid_end; 94 }; 95 96 #define SWITCHDEV_OBJ_PORT_VLAN(obj) \ 97 container_of(obj, struct switchdev_obj_port_vlan, obj) 98 99 /* SWITCHDEV_OBJ_ID_PORT_MDB */ 100 struct switchdev_obj_port_mdb { 101 struct switchdev_obj obj; 102 unsigned char addr[ETH_ALEN]; 103 u16 vid; 104 }; 105 106 #define SWITCHDEV_OBJ_PORT_MDB(obj) \ 107 container_of(obj, struct switchdev_obj_port_mdb, obj) 108 109 void switchdev_trans_item_enqueue(struct switchdev_trans *trans, 110 void *data, void (*destructor)(void const *), 111 struct switchdev_trans_item *tritem); 112 void *switchdev_trans_item_dequeue(struct switchdev_trans *trans); 113 114 typedef int switchdev_obj_dump_cb_t(struct switchdev_obj *obj); 115 116 /** 117 * struct switchdev_ops - switchdev operations 118 * 119 * @switchdev_port_attr_get: Get a port attribute (see switchdev_attr). 120 * 121 * @switchdev_port_attr_set: Set a port attribute (see switchdev_attr). 122 * 123 * @switchdev_port_obj_add: Add an object to port (see switchdev_obj_*). 124 * 125 * @switchdev_port_obj_del: Delete an object from port (see switchdev_obj_*). 126 */ 127 struct switchdev_ops { 128 int (*switchdev_port_attr_get)(struct net_device *dev, 129 struct switchdev_attr *attr); 130 int (*switchdev_port_attr_set)(struct net_device *dev, 131 const struct switchdev_attr *attr, 132 struct switchdev_trans *trans); 133 int (*switchdev_port_obj_add)(struct net_device *dev, 134 const struct switchdev_obj *obj, 135 struct switchdev_trans *trans); 136 int (*switchdev_port_obj_del)(struct net_device *dev, 137 const struct switchdev_obj *obj); 138 }; 139 140 enum switchdev_notifier_type { 141 SWITCHDEV_FDB_ADD_TO_BRIDGE = 1, 142 SWITCHDEV_FDB_DEL_TO_BRIDGE, 143 SWITCHDEV_FDB_ADD_TO_DEVICE, 144 SWITCHDEV_FDB_DEL_TO_DEVICE, 145 SWITCHDEV_FDB_OFFLOADED, 146 }; 147 148 struct switchdev_notifier_info { 149 struct net_device *dev; 150 }; 151 152 struct switchdev_notifier_fdb_info { 153 struct switchdev_notifier_info info; /* must be first */ 154 const unsigned char *addr; 155 u16 vid; 156 }; 157 158 static inline struct net_device * 159 switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info) 160 { 161 return info->dev; 162 } 163 164 #ifdef CONFIG_NET_SWITCHDEV 165 166 void switchdev_deferred_process(void); 167 int switchdev_port_attr_get(struct net_device *dev, 168 struct switchdev_attr *attr); 169 int switchdev_port_attr_set(struct net_device *dev, 170 const struct switchdev_attr *attr); 171 int switchdev_port_obj_add(struct net_device *dev, 172 const struct switchdev_obj *obj); 173 int switchdev_port_obj_del(struct net_device *dev, 174 const struct switchdev_obj *obj); 175 int register_switchdev_notifier(struct notifier_block *nb); 176 int unregister_switchdev_notifier(struct notifier_block *nb); 177 int call_switchdev_notifiers(unsigned long val, struct net_device *dev, 178 struct switchdev_notifier_info *info); 179 void switchdev_port_fwd_mark_set(struct net_device *dev, 180 struct net_device *group_dev, 181 bool joining); 182 183 bool switchdev_port_same_parent_id(struct net_device *a, 184 struct net_device *b); 185 186 #define SWITCHDEV_SET_OPS(netdev, ops) ((netdev)->switchdev_ops = (ops)) 187 #else 188 189 static inline void switchdev_deferred_process(void) 190 { 191 } 192 193 static inline int switchdev_port_attr_get(struct net_device *dev, 194 struct switchdev_attr *attr) 195 { 196 return -EOPNOTSUPP; 197 } 198 199 static inline int switchdev_port_attr_set(struct net_device *dev, 200 const struct switchdev_attr *attr) 201 { 202 return -EOPNOTSUPP; 203 } 204 205 static inline int switchdev_port_obj_add(struct net_device *dev, 206 const struct switchdev_obj *obj) 207 { 208 return -EOPNOTSUPP; 209 } 210 211 static inline int switchdev_port_obj_del(struct net_device *dev, 212 const struct switchdev_obj *obj) 213 { 214 return -EOPNOTSUPP; 215 } 216 217 static inline int register_switchdev_notifier(struct notifier_block *nb) 218 { 219 return 0; 220 } 221 222 static inline int unregister_switchdev_notifier(struct notifier_block *nb) 223 { 224 return 0; 225 } 226 227 static inline int call_switchdev_notifiers(unsigned long val, 228 struct net_device *dev, 229 struct switchdev_notifier_info *info) 230 { 231 return NOTIFY_DONE; 232 } 233 234 static inline bool switchdev_port_same_parent_id(struct net_device *a, 235 struct net_device *b) 236 { 237 return false; 238 } 239 240 #define SWITCHDEV_SET_OPS(netdev, ops) do {} while (0) 241 242 #endif 243 244 #endif /* _LINUX_SWITCHDEV_H_ */ 245