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_ */ 170