kernel/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 struct fib_info;
  18
  19 /**
  20  * struct switchdev_ops - switchdev operations
  21  *
  22  * @swdev_parent_id_get: Called to get an ID of the switch chip this port
  23  *   is part of.  If driver implements this, it indicates that it
  24  *   represents a port of a switch chip.
  25  *
  26  * @swdev_port_stp_update: Called to notify switch device port of bridge
  27  *   port STP state change.
  28  *
  29  * @swdev_fib_ipv4_add: Called to add/modify IPv4 route to switch device.
  30  *
  31  * @swdev_fib_ipv4_del: Called to delete IPv4 route from switch device.
  32  */
  33 struct swdev_ops {
  34         int     (*swdev_parent_id_get)(struct net_device *dev,
  35                                        struct netdev_phys_item_id *psid);
  36         int     (*swdev_port_stp_update)(struct net_device *dev, u8 state);
  37         int     (*swdev_fib_ipv4_add)(struct net_device *dev, __be32 dst,
  38                                       int dst_len, struct fib_info *fi,
  39                                       u8 tos, u8 type, u32 nlflags,
  40                                       u32 tb_id);
  41         int     (*swdev_fib_ipv4_del)(struct net_device *dev, __be32 dst,
  42                                       int dst_len, struct fib_info *fi,
  43                                       u8 tos, u8 type, u32 tb_id);
  44 };
  45
  46 enum netdev_switch_notifier_type {
  47         NETDEV_SWITCH_FDB_ADD = 1,
  48         NETDEV_SWITCH_FDB_DEL,
  49 };
  50
  51 struct netdev_switch_notifier_info {
  52         struct net_device *dev;
  53 };
  54
  55 struct netdev_switch_notifier_fdb_info {
  56         struct netdev_switch_notifier_info info; /* must be first */
  57         const unsigned char *addr;
  58         u16 vid;
  59 };
  60
  61 static inline struct net_device *
  62 netdev_switch_notifier_info_to_dev(const struct netdev_switch_notifier_info *info)
  63 {
  64         return info->dev;
  65 }
  66
  67 #ifdef CONFIG_NET_SWITCHDEV
  68
  69 int netdev_switch_parent_id_get(struct net_device *dev,
  70                                 struct netdev_phys_item_id *psid);
  71 int netdev_switch_port_stp_update(struct net_device *dev, u8 state);
  72 int register_netdev_switch_notifier(struct notifier_block *nb);
  73 int unregister_netdev_switch_notifier(struct notifier_block *nb);
  74 int call_netdev_switch_notifiers(unsigned long val, struct net_device *dev,
  75                                  struct netdev_switch_notifier_info *info);
  76 int netdev_switch_port_bridge_setlink(struct net_device *dev,
  77                                 struct nlmsghdr *nlh, u16 flags);
  78 int netdev_switch_port_bridge_dellink(struct net_device *dev,
  79                                 struct nlmsghdr *nlh, u16 flags);
  80 int ndo_dflt_netdev_switch_port_bridge_dellink(struct net_device *dev,
  81                                                struct nlmsghdr *nlh, u16 flags);
  82 int ndo_dflt_netdev_switch_port_bridge_setlink(struct net_device *dev,
  83                                                struct nlmsghdr *nlh, u16 flags);
  84 int netdev_switch_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi,
  85                                u8 tos, u8 type, u32 nlflags, u32 tb_id);
  86 int netdev_switch_fib_ipv4_del(u32 dst, int dst_len, struct fib_info *fi,
  87                                u8 tos, u8 type, u32 tb_id);
  88 void netdev_switch_fib_ipv4_abort(struct fib_info *fi);
  89
  90 #else
  91
  92 static inline int netdev_switch_parent_id_get(struct net_device *dev,
  93                                               struct netdev_phys_item_id *psid)
  94 {
  95         return -EOPNOTSUPP;
  96 }
  97
  98 static inline int netdev_switch_port_stp_update(struct net_device *dev,
  99                                                 u8 state)
 100 {
 101         return -EOPNOTSUPP;
 102 }
 103
 104 static inline int register_netdev_switch_notifier(struct notifier_block *nb)
 105 {
 106         return 0;
 107 }
 108
 109 static inline int unregister_netdev_switch_notifier(struct notifier_block *nb)
 110 {
 111         return 0;
 112 }
 113
 114 static inline int call_netdev_switch_notifiers(unsigned long val, struct net_device *dev,
 115                                                struct netdev_switch_notifier_info *info)
 116 {
 117         return NOTIFY_DONE;
 118 }
 119
 120 static inline int netdev_switch_port_bridge_setlink(struct net_device *dev,
 121                                                     struct nlmsghdr *nlh,
 122                                                     u16 flags)
 123 {
 124         return -EOPNOTSUPP;
 125 }
 126
 127 static inline int netdev_switch_port_bridge_dellink(struct net_device *dev,
 128                                                     struct nlmsghdr *nlh,
 129                                                     u16 flags)
 130 {
 131         return -EOPNOTSUPP;
 132 }
 133
 134 static inline int ndo_dflt_netdev_switch_port_bridge_dellink(struct net_device *dev,
 135                                                         struct nlmsghdr *nlh,
 136                                                         u16 flags)
 137 {
 138         return 0;
 139 }
 140
 141 static inline int ndo_dflt_netdev_switch_port_bridge_setlink(struct net_device *dev,
 142                                                         struct nlmsghdr *nlh,
 143                                                         u16 flags)
 144 {
 145         return 0;
 146 }
 147
 148 static inline int netdev_switch_fib_ipv4_add(u32 dst, int dst_len,
 149                                              struct fib_info *fi,
 150                                              u8 tos, u8 type,
 151                                              u32 nlflags, u32 tb_id)
 152 {
 153         return 0;
 154 }
 155
 156 static inline int netdev_switch_fib_ipv4_del(u32 dst, int dst_len,
 157                                              struct fib_info *fi,
 158                                              u8 tos, u8 type, u32 tb_id)
 159 {
 160         return 0;
 161 }
 162
 163 static inline void netdev_switch_fib_ipv4_abort(struct fib_info *fi)
 164 {
 165 }
 166
 167 #endif
 168
 169 #endif /* _LINUX_SWITCHDEV_H_ */