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 };
  31
  32 struct switchdev_attr {
  33         enum switchdev_attr_id id;
  34         enum switchdev_trans trans;
  35         u32 flags;
  36         union {
  37                 struct netdev_phys_item_id ppid;        /* PORT_PARENT_ID */
  38                 u8 stp_state;                           /* PORT_STP_STATE */
  39         };
  40 };
  41
  42 struct fib_info;
  43
  44 /**
  45  * struct switchdev_ops - switchdev operations
  46  *
  47  * @switchdev_port_attr_get: Get a port attribute (see switchdev_attr).
  48  *
  49  * @switchdev_port_attr_set: Set a port attribute (see switchdev_attr).
  50  *
  51  * @switchdev_fib_ipv4_add: Called to add/modify IPv4 route to switch device.
  52  *
  53  * @switchdev_fib_ipv4_del: Called to delete IPv4 route from switch device.
  54  */
  55 struct switchdev_ops {
  56         int     (*switchdev_port_attr_get)(struct net_device *dev,
  57                                            struct switchdev_attr *attr);
  58         int     (*switchdev_port_attr_set)(struct net_device *dev,
  59                                            struct switchdev_attr *attr);
  60         int     (*switchdev_fib_ipv4_add)(struct net_device *dev, __be32 dst,
  61                                           int dst_len, struct fib_info *fi,
  62                                           u8 tos, u8 type, u32 nlflags,
  63                                           u32 tb_id);
  64         int     (*switchdev_fib_ipv4_del)(struct net_device *dev, __be32 dst,
  65                                           int dst_len, struct fib_info *fi,
  66                                           u8 tos, u8 type, u32 tb_id);
  67 };
  68
  69 enum switchdev_notifier_type {
  70         SWITCHDEV_FDB_ADD = 1,
  71         SWITCHDEV_FDB_DEL,
  72 };
  73
  74 struct switchdev_notifier_info {
  75         struct net_device *dev;
  76 };
  77
  78 struct switchdev_notifier_fdb_info {
  79         struct switchdev_notifier_info info; /* must be first */
  80         const unsigned char *addr;
  81         u16 vid;
  82 };
  83
  84 static inline struct net_device *
  85 switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info)
  86 {
  87         return info->dev;
  88 }
  89
  90 #ifdef CONFIG_NET_SWITCHDEV
  91
  92 int switchdev_port_attr_get(struct net_device *dev,
  93                             struct switchdev_attr *attr);
  94 int switchdev_port_attr_set(struct net_device *dev,
  95                             struct switchdev_attr *attr);
  96 int register_switchdev_notifier(struct notifier_block *nb);
  97 int unregister_switchdev_notifier(struct notifier_block *nb);
  98 int call_switchdev_notifiers(unsigned long val, struct net_device *dev,
  99                              struct switchdev_notifier_info *info);
 100 int switchdev_port_bridge_setlink(struct net_device *dev,
 101                                   struct nlmsghdr *nlh, u16 flags);
 102 int switchdev_port_bridge_dellink(struct net_device *dev,
 103                                   struct nlmsghdr *nlh, u16 flags);
 104 int ndo_dflt_switchdev_port_bridge_dellink(struct net_device *dev,
 105                                            struct nlmsghdr *nlh, u16 flags);
 106 int ndo_dflt_switchdev_port_bridge_setlink(struct net_device *dev,
 107                                            struct nlmsghdr *nlh, u16 flags);
 108 int switchdev_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi,
 109                            u8 tos, u8 type, u32 nlflags, u32 tb_id);
 110 int switchdev_fib_ipv4_del(u32 dst, int dst_len, struct fib_info *fi,
 111                            u8 tos, u8 type, u32 tb_id);
 112 void switchdev_fib_ipv4_abort(struct fib_info *fi);
 113
 114 #else
 115
 116 static inline int switchdev_port_attr_get(struct net_device *dev,
 117                                           struct switchdev_attr *attr)
 118 {
 119         return -EOPNOTSUPP;
 120 }
 121
 122 static inline int switchdev_port_attr_set(struct net_device *dev,
 123                                           struct switchdev_attr *attr)
 124 {
 125         return -EOPNOTSUPP;
 126 }
 127
 128 static inline int register_switchdev_notifier(struct notifier_block *nb)
 129 {
 130         return 0;
 131 }
 132
 133 static inline int unregister_switchdev_notifier(struct notifier_block *nb)
 134 {
 135         return 0;
 136 }
 137
 138 static inline int call_switchdev_notifiers(unsigned long val,
 139                                            struct net_device *dev,
 140                                            struct switchdev_notifier_info *info)
 141 {
 142         return NOTIFY_DONE;
 143 }
 144
 145 static inline int switchdev_port_bridge_setlink(struct net_device *dev,
 146                                                 struct nlmsghdr *nlh,
 147                                                 u16 flags)
 148 {
 149         return -EOPNOTSUPP;
 150 }
 151
 152 static inline int switchdev_port_bridge_dellink(struct net_device *dev,
 153                                                 struct nlmsghdr *nlh,
 154                                                 u16 flags)
 155 {
 156         return -EOPNOTSUPP;
 157 }
 158
 159 static inline int ndo_dflt_switchdev_port_bridge_dellink(struct net_device *dev,
 160                                                          struct nlmsghdr *nlh,
 161                                                          u16 flags)
 162 {
 163         return 0;
 164 }
 165
 166 static inline int ndo_dflt_switchdev_port_bridge_setlink(struct net_device *dev,
 167                                                          struct nlmsghdr *nlh,
 168                                                          u16 flags)
 169 {
 170         return 0;
 171 }
 172
 173 static inline int switchdev_fib_ipv4_add(u32 dst, int dst_len,
 174                                          struct fib_info *fi,
 175                                          u8 tos, u8 type,
 176                                          u32 nlflags, u32 tb_id)
 177 {
 178         return 0;
 179 }
 180
 181 static inline int switchdev_fib_ipv4_del(u32 dst, int dst_len,
 182                                          struct fib_info *fi,
 183                                          u8 tos, u8 type, u32 tb_id)
 184 {
 185         return 0;
 186 }
 187
 188 static inline void switchdev_fib_ipv4_abort(struct fib_info *fi)
 189 {
 190 }
 191
 192 #endif
 193
 194 #endif /* _LINUX_SWITCHDEV_H_ */