include/net/switchdev.h

   1 /*
   2  * include/net/switchdev.h - Switch device API
   3  * Copyright (c) 2014 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
  17 #define SWITCHDEV_F_NO_RECURSE          BIT(0)
  18
  19 enum switchdev_trans {
  20         SWITCHDEV_TRANS_NONE,
  21         SWITCHDEV_TRANS_PREPARE,
  22         SWITCHDEV_TRANS_ABORT,
  23         SWITCHDEV_TRANS_COMMIT,
  24 };
  25
  26 enum switchdev_attr_id {
  27         SWITCHDEV_ATTR_UNDEFINED,
  28         SWITCHDEV_ATTR_PORT_PARENT_ID,
  29         SWITCHDEV_ATTR_PORT_STP_STATE,
  30         SWITCHDEV_ATTR_PORT_BRIDGE_FLAGS,
  31 };
  32
  33 struct switchdev_attr {
  34         enum switchdev_attr_id id;
  35         enum switchdev_trans trans;
  36         u32 flags;
  37         union {
  38                 struct netdev_phys_item_id ppid;        /* PORT_PARENT_ID */
  39                 u8 stp_state;                           /* PORT_STP_STATE */
  40                 unsigned long brport_flags;             /* PORT_BRIDGE_FLAGS */
  41         } u;
  42 };
  43
  44 struct fib_info;
  45
  46 enum switchdev_obj_id {
  47         SWITCHDEV_OBJ_UNDEFINED,
  48         SWITCHDEV_OBJ_PORT_VLAN,
  49         SWITCHDEV_OBJ_IPV4_FIB,
  50         SWITCHDEV_OBJ_PORT_FDB,
  51 };
  52
  53 struct switchdev_obj {
  54         enum switchdev_obj_id id;
  55         enum switchdev_trans trans;
  56         int (*cb)(struct net_device *dev, struct switchdev_obj *obj);
  57         union {
  58                 struct switchdev_obj_vlan {             /* PORT_VLAN */
  59                         u16 flags;
  60                         u16 vid_begin;
  61                         u16 vid_end;
  62                 } vlan;
  63                 struct switchdev_obj_ipv4_fib {         /* IPV4_FIB */
  64                         u32 dst;
  65                         int dst_len;
  66                         struct fib_info *fi;
  67                         u8 tos;
  68                         u8 type;
  69                         u32 nlflags;
  70                         u32 tb_id;
  71                 } ipv4_fib;
  72                 struct switchdev_obj_fdb {              /* PORT_FDB */
  73                         const unsigned char *addr;
  74                         u16 vid;
  75                         u16 ndm_state;
  76                 } fdb;
  77         } u;
  78 };
  79
  80 /**
  81  * struct switchdev_ops - switchdev operations
  82  *
  83  * @switchdev_port_attr_get: Get a port attribute (see switchdev_attr).
  84  *
  85  * @switchdev_port_attr_set: Set a port attribute (see switchdev_attr).
  86  *
  87  * @switchdev_port_obj_add: Add an object to port (see switchdev_obj).
  88  *
  89  * @switchdev_port_obj_del: Delete an object from port (see switchdev_obj).
  90  *
  91  * @switchdev_port_obj_dump: Dump port objects (see switchdev_obj).
  92  */
  93 struct switchdev_ops {
  94         int     (*switchdev_port_attr_get)(struct net_device *dev,
  95                                            struct switchdev_attr *attr);
  96         int     (*switchdev_port_attr_set)(struct net_device *dev,
  97                                            struct switchdev_attr *attr);
  98         int     (*switchdev_port_obj_add)(struct net_device *dev,
  99                                           struct switchdev_obj *obj);
 100         int     (*switchdev_port_obj_del)(struct net_device *dev,
 101                                           struct switchdev_obj *obj);
 102         int     (*switchdev_port_obj_dump)(struct net_device *dev,
 103                                           struct switchdev_obj *obj);
 104 };
 105
 106 enum switchdev_notifier_type {
 107         SWITCHDEV_FDB_ADD = 1,
 108         SWITCHDEV_FDB_DEL,
 109 };
 110
 111 struct switchdev_notifier_info {
 112         struct net_device *dev;
 113 };
 114
 115 struct switchdev_notifier_fdb_info {
 116         struct switchdev_notifier_info info; /* must be first */
 117         const unsigned char *addr;
 118         u16 vid;
 119 };
 120
 121 static inline struct net_device *
 122 switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info)
 123 {
 124         return info->dev;
 125 }
 126
 127 #ifdef CONFIG_NET_SWITCHDEV
 128
 129 int switchdev_port_attr_get(struct net_device *dev,
 130                             struct switchdev_attr *attr);
 131 int switchdev_port_attr_set(struct net_device *dev,
 132                             struct switchdev_attr *attr);
 133 int switchdev_port_obj_add(struct net_device *dev, struct switchdev_obj *obj);
 134 int switchdev_port_obj_del(struct net_device *dev, struct switchdev_obj *obj);
 135 int switchdev_port_obj_dump(struct net_device *dev, struct switchdev_obj *obj);
 136 int register_switchdev_notifier(struct notifier_block *nb);
 137 int unregister_switchdev_notifier(struct notifier_block *nb);
 138 int call_switchdev_notifiers(unsigned long val, struct net_device *dev,
 139                              struct switchdev_notifier_info *info);
 140 int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
 141                                   struct net_device *dev, u32 filter_mask,
 142                                   int nlflags);
 143 int switchdev_port_bridge_setlink(struct net_device *dev,
 144                                   struct nlmsghdr *nlh, u16 flags);
 145 int switchdev_port_bridge_dellink(struct net_device *dev,
 146                                   struct nlmsghdr *nlh, u16 flags);
 147 int switchdev_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi,
 148                            u8 tos, u8 type, u32 nlflags, u32 tb_id);
 149 int switchdev_fib_ipv4_del(u32 dst, int dst_len, struct fib_info *fi,
 150                            u8 tos, u8 type, u32 tb_id);
 151 void switchdev_fib_ipv4_abort(struct fib_info *fi);
 152 int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
 153                            struct net_device *dev, const unsigned char *addr,
 154                            u16 vid, u16 nlm_flags);
 155 int switchdev_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
 156                            struct net_device *dev, const unsigned char *addr,
 157                            u16 vid);
 158 int switchdev_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
 159                             struct net_device *dev,
 160                             struct net_device *filter_dev, int idx);
 161 void switchdev_port_fwd_mark_set(struct net_device *dev,
 162                                  struct net_device *group_dev,
 163                                  bool joining);
 164
 165 #else
 166
 167 static inline int switchdev_port_attr_get(struct net_device *dev,
 168                                           struct switchdev_attr *attr)
 169 {
 170         return -EOPNOTSUPP;
 171 }
 172
 173 static inline int switchdev_port_attr_set(struct net_device *dev,
 174                                           struct switchdev_attr *attr)
 175 {
 176         return -EOPNOTSUPP;
 177 }
 178
 179 static inline int switchdev_port_obj_add(struct net_device *dev,
 180                                          struct switchdev_obj *obj)
 181 {
 182         return -EOPNOTSUPP;
 183 }
 184
 185 static inline int switchdev_port_obj_del(struct net_device *dev,
 186                                          struct switchdev_obj *obj)
 187 {
 188         return -EOPNOTSUPP;
 189 }
 190
 191 static inline int switchdev_port_obj_dump(struct net_device *dev,
 192                                           struct switchdev_obj *obj)
 193 {
 194         return -EOPNOTSUPP;
 195 }
 196
 197 static inline int register_switchdev_notifier(struct notifier_block *nb)
 198 {
 199         return 0;
 200 }
 201
 202 static inline int unregister_switchdev_notifier(struct notifier_block *nb)
 203 {
 204         return 0;
 205 }
 206
 207 static inline int call_switchdev_notifiers(unsigned long val,
 208                                            struct net_device *dev,
 209                                            struct switchdev_notifier_info *info)
 210 {
 211         return NOTIFY_DONE;
 212 }
 213
 214 static inline int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid,
 215                                             u32 seq, struct net_device *dev,
 216                                             u32 filter_mask, int nlflags)
 217 {
 218         return -EOPNOTSUPP;
 219 }
 220
 221 static inline int switchdev_port_bridge_setlink(struct net_device *dev,
 222                                                 struct nlmsghdr *nlh,
 223                                                 u16 flags)
 224 {
 225         return -EOPNOTSUPP;
 226 }
 227
 228 static inline int switchdev_port_bridge_dellink(struct net_device *dev,
 229                                                 struct nlmsghdr *nlh,
 230                                                 u16 flags)
 231 {
 232         return -EOPNOTSUPP;
 233 }
 234
 235 static inline int switchdev_fib_ipv4_add(u32 dst, int dst_len,
 236                                          struct fib_info *fi,
 237                                          u8 tos, u8 type,
 238                                          u32 nlflags, u32 tb_id)
 239 {
 240         return 0;
 241 }
 242
 243 static inline int switchdev_fib_ipv4_del(u32 dst, int dst_len,
 244                                          struct fib_info *fi,
 245                                          u8 tos, u8 type, u32 tb_id)
 246 {
 247         return 0;
 248 }
 249
 250 static inline void switchdev_fib_ipv4_abort(struct fib_info *fi)
 251 {
 252 }
 253
 254 static inline int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
 255                                          struct net_device *dev,
 256                                          const unsigned char *addr,
 257                                          u16 vid, u16 nlm_flags)
 258 {
 259         return -EOPNOTSUPP;
 260 }
 261
 262 static inline int switchdev_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
 263                                          struct net_device *dev,
 264                                          const unsigned char *addr, u16 vid)
 265 {
 266         return -EOPNOTSUPP;
 267 }
 268
 269 static inline int switchdev_port_fdb_dump(struct sk_buff *skb,
 270                                           struct netlink_callback *cb,
 271                                           struct net_device *dev,
 272                                           struct net_device *filter_dev,
 273                                           int idx)
 274 {
 275         return -EOPNOTSUPP;
 276 }
 277
 278 static inline void switchdev_port_fwd_mark_set(struct net_device *dev,
 279                                                struct net_device *group_dev,
 280                                                bool joining)
 281 {
 282 }
 283
 284 #endif
 285
 286 #endif /* _LINUX_SWITCHDEV_H_ */