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                         u8 addr[ETH_ALEN];
  74                         u16 vid;
  75                 } fdb;
  76         } u;
  77 };
  78
  79 /**
  80  * struct switchdev_ops - switchdev operations
  81  *
  82  * @switchdev_port_attr_get: Get a port attribute (see switchdev_attr).
  83  *
  84  * @switchdev_port_attr_set: Set a port attribute (see switchdev_attr).
  85  *
  86  * @switchdev_port_obj_add: Add an object to port (see switchdev_obj).
  87  *
  88  * @switchdev_port_obj_del: Delete an object from port (see switchdev_obj).
  89  *
  90  * @switchdev_port_obj_dump: Dump port objects (see switchdev_obj).
  91  */
  92 struct switchdev_ops {
  93         int     (*switchdev_port_attr_get)(struct net_device *dev,
  94                                            struct switchdev_attr *attr);
  95         int     (*switchdev_port_attr_set)(struct net_device *dev,
  96                                            struct switchdev_attr *attr);
  97         int     (*switchdev_port_obj_add)(struct net_device *dev,
  98                                           struct switchdev_obj *obj);
  99         int     (*switchdev_port_obj_del)(struct net_device *dev,
 100                                           struct switchdev_obj *obj);
 101         int     (*switchdev_port_obj_dump)(struct net_device *dev,
 102                                           struct switchdev_obj *obj);
 103 };
 104
 105 enum switchdev_notifier_type {
 106         SWITCHDEV_FDB_ADD = 1,
 107         SWITCHDEV_FDB_DEL,
 108 };
 109
 110 struct switchdev_notifier_info {
 111         struct net_device *dev;
 112 };
 113
 114 struct switchdev_notifier_fdb_info {
 115         struct switchdev_notifier_info info; /* must be first */
 116         const unsigned char *addr;
 117         u16 vid;
 118 };
 119
 120 static inline struct net_device *
 121 switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info)
 122 {
 123         return info->dev;
 124 }
 125
 126 #ifdef CONFIG_NET_SWITCHDEV
 127
 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                             struct switchdev_attr *attr);
 132 int switchdev_port_obj_add(struct net_device *dev, struct switchdev_obj *obj);
 133 int switchdev_port_obj_del(struct net_device *dev, struct switchdev_obj *obj);
 134 int switchdev_port_obj_dump(struct net_device *dev, struct switchdev_obj *obj);
 135 int register_switchdev_notifier(struct notifier_block *nb);
 136 int unregister_switchdev_notifier(struct notifier_block *nb);
 137 int call_switchdev_notifiers(unsigned long val, struct net_device *dev,
 138                              struct switchdev_notifier_info *info);
 139 int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
 140                                   struct net_device *dev, u32 filter_mask,
 141                                   int nlflags);
 142 int switchdev_port_bridge_setlink(struct net_device *dev,
 143                                   struct nlmsghdr *nlh, u16 flags);
 144 int switchdev_port_bridge_dellink(struct net_device *dev,
 145                                   struct nlmsghdr *nlh, u16 flags);
 146 int switchdev_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi,
 147                            u8 tos, u8 type, u32 nlflags, u32 tb_id);
 148 int switchdev_fib_ipv4_del(u32 dst, int dst_len, struct fib_info *fi,
 149                            u8 tos, u8 type, u32 tb_id);
 150 void switchdev_fib_ipv4_abort(struct fib_info *fi);
 151 int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
 152                            struct net_device *dev, const unsigned char *addr,
 153                            u16 vid, u16 nlm_flags);
 154 int switchdev_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
 155                            struct net_device *dev, const unsigned char *addr,
 156                            u16 vid);
 157 int switchdev_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
 158                             struct net_device *dev,
 159                             struct net_device *filter_dev, int idx);
 160 void switchdev_port_fwd_mark_set(struct net_device *dev,
 161                                  struct net_device *group_dev,
 162                                  bool joining);
 163
 164 #else
 165
 166 static inline int switchdev_port_attr_get(struct net_device *dev,
 167                                           struct switchdev_attr *attr)
 168 {
 169         return -EOPNOTSUPP;
 170 }
 171
 172 static inline int switchdev_port_attr_set(struct net_device *dev,
 173                                           struct switchdev_attr *attr)
 174 {
 175         return -EOPNOTSUPP;
 176 }
 177
 178 static inline int switchdev_port_obj_add(struct net_device *dev,
 179                                          struct switchdev_obj *obj)
 180 {
 181         return -EOPNOTSUPP;
 182 }
 183
 184 static inline int switchdev_port_obj_del(struct net_device *dev,
 185                                          struct switchdev_obj *obj)
 186 {
 187         return -EOPNOTSUPP;
 188 }
 189
 190 static inline int switchdev_port_obj_dump(struct net_device *dev,
 191                                           struct switchdev_obj *obj)
 192 {
 193         return -EOPNOTSUPP;
 194 }
 195
 196 static inline int register_switchdev_notifier(struct notifier_block *nb)
 197 {
 198         return 0;
 199 }
 200
 201 static inline int unregister_switchdev_notifier(struct notifier_block *nb)
 202 {
 203         return 0;
 204 }
 205
 206 static inline int call_switchdev_notifiers(unsigned long val,
 207                                            struct net_device *dev,
 208                                            struct switchdev_notifier_info *info)
 209 {
 210         return NOTIFY_DONE;
 211 }
 212
 213 static inline int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid,
 214                                             u32 seq, struct net_device *dev,
 215                                             u32 filter_mask, int nlflags)
 216 {
 217         return -EOPNOTSUPP;
 218 }
 219
 220 static inline int switchdev_port_bridge_setlink(struct net_device *dev,
 221                                                 struct nlmsghdr *nlh,
 222                                                 u16 flags)
 223 {
 224         return -EOPNOTSUPP;
 225 }
 226
 227 static inline int switchdev_port_bridge_dellink(struct net_device *dev,
 228                                                 struct nlmsghdr *nlh,
 229                                                 u16 flags)
 230 {
 231         return -EOPNOTSUPP;
 232 }
 233
 234 static inline int switchdev_fib_ipv4_add(u32 dst, int dst_len,
 235                                          struct fib_info *fi,
 236                                          u8 tos, u8 type,
 237                                          u32 nlflags, u32 tb_id)
 238 {
 239         return 0;
 240 }
 241
 242 static inline int switchdev_fib_ipv4_del(u32 dst, int dst_len,
 243                                          struct fib_info *fi,
 244                                          u8 tos, u8 type, u32 tb_id)
 245 {
 246         return 0;
 247 }
 248
 249 static inline void switchdev_fib_ipv4_abort(struct fib_info *fi)
 250 {
 251 }
 252
 253 static inline int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
 254                                          struct net_device *dev,
 255                                          const unsigned char *addr,
 256                                          u16 vid, u16 nlm_flags)
 257 {
 258         return -EOPNOTSUPP;
 259 }
 260
 261 static inline int switchdev_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
 262                                          struct net_device *dev,
 263                                          const unsigned char *addr, u16 vid)
 264 {
 265         return -EOPNOTSUPP;
 266 }
 267
 268 static inline int switchdev_port_fdb_dump(struct sk_buff *skb,
 269                                           struct netlink_callback *cb,
 270                                           struct net_device *dev,
 271                                           struct net_device *filter_dev,
 272                                           int idx)
 273 {
 274         return -EOPNOTSUPP;
 275 }
 276
 277 static inline void switchdev_port_fwd_mark_set(struct net_device *dev,
 278                                                struct net_device *group_dev,
 279                                                bool joining)
 280 {
 281 }
 282
 283 #endif
 284
 285 #endif /* _LINUX_SWITCHDEV_H_ */