1 /* 2 * include/linux/if_team.h - Network team device driver header 3 * Copyright (c) 2011 Jiri Pirko <[email protected]> 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; either version 2 of the License, or 8 * (at your option) any later version. 9 */ 10 11 #ifndef _LINUX_IF_TEAM_H_ 12 #define _LINUX_IF_TEAM_H_ 13 14 #ifdef __KERNEL__ 15 16 struct team_pcpu_stats { 17 u64 rx_packets; 18 u64 rx_bytes; 19 u64 rx_multicast; 20 u64 tx_packets; 21 u64 tx_bytes; 22 struct u64_stats_sync syncp; 23 u32 rx_dropped; 24 u32 tx_dropped; 25 }; 26 27 struct team; 28 29 struct team_port { 30 struct net_device *dev; 31 struct hlist_node hlist; /* node in hash list */ 32 struct list_head list; /* node in ordinary list */ 33 struct team *team; 34 int index; 35 36 /* 37 * A place for storing original values of the device before it 38 * become a port. 39 */ 40 struct { 41 unsigned char dev_addr[MAX_ADDR_LEN]; 42 unsigned int mtu; 43 } orig; 44 45 bool linkup; 46 u32 speed; 47 u8 duplex; 48 49 struct rcu_head rcu; 50 }; 51 52 struct team_mode_ops { 53 int (*init)(struct team *team); 54 void (*exit)(struct team *team); 55 rx_handler_result_t (*receive)(struct team *team, 56 struct team_port *port, 57 struct sk_buff *skb); 58 bool (*transmit)(struct team *team, struct sk_buff *skb); 59 int (*port_enter)(struct team *team, struct team_port *port); 60 void (*port_leave)(struct team *team, struct team_port *port); 61 void (*port_change_mac)(struct team *team, struct team_port *port); 62 }; 63 64 enum team_option_type { 65 TEAM_OPTION_TYPE_U32, 66 TEAM_OPTION_TYPE_STRING, 67 }; 68 69 struct team_option { 70 struct list_head list; 71 const char *name; 72 enum team_option_type type; 73 int (*getter)(struct team *team, void *arg); 74 int (*setter)(struct team *team, void *arg); 75 }; 76 77 struct team_mode { 78 struct list_head list; 79 const char *kind; 80 struct module *owner; 81 size_t priv_size; 82 const struct team_mode_ops *ops; 83 }; 84 85 #define TEAM_PORT_HASHBITS 4 86 #define TEAM_PORT_HASHENTRIES (1 << TEAM_PORT_HASHBITS) 87 88 #define TEAM_MODE_PRIV_LONGS 4 89 #define TEAM_MODE_PRIV_SIZE (sizeof(long) * TEAM_MODE_PRIV_LONGS) 90 91 struct team { 92 struct net_device *dev; /* associated netdevice */ 93 struct team_pcpu_stats __percpu *pcpu_stats; 94 95 struct mutex lock; /* used for overall locking, e.g. port lists write */ 96 97 /* 98 * port lists with port count 99 */ 100 int port_count; 101 struct hlist_head port_hlist[TEAM_PORT_HASHENTRIES]; 102 struct list_head port_list; 103 104 struct list_head option_list; 105 106 const struct team_mode *mode; 107 struct team_mode_ops ops; 108 long mode_priv[TEAM_MODE_PRIV_LONGS]; 109 }; 110 111 static inline struct hlist_head *team_port_index_hash(struct team *team, 112 int port_index) 113 { 114 return &team->port_hlist[port_index & (TEAM_PORT_HASHENTRIES - 1)]; 115 } 116 117 static inline struct team_port *team_get_port_by_index(struct team *team, 118 int port_index) 119 { 120 struct hlist_node *p; 121 struct team_port *port; 122 struct hlist_head *head = team_port_index_hash(team, port_index); 123 124 hlist_for_each_entry(port, p, head, hlist) 125 if (port->index == port_index) 126 return port; 127 return NULL; 128 } 129 static inline struct team_port *team_get_port_by_index_rcu(struct team *team, 130 int port_index) 131 { 132 struct hlist_node *p; 133 struct team_port *port; 134 struct hlist_head *head = team_port_index_hash(team, port_index); 135 136 hlist_for_each_entry_rcu(port, p, head, hlist) 137 if (port->index == port_index) 138 return port; 139 return NULL; 140 } 141 142 extern int team_port_set_team_mac(struct team_port *port); 143 extern int team_options_register(struct team *team, 144 const struct team_option *option, 145 size_t option_count); 146 extern void team_options_unregister(struct team *team, 147 const struct team_option *option, 148 size_t option_count); 149 extern int team_mode_register(struct team_mode *mode); 150 extern int team_mode_unregister(struct team_mode *mode); 151 152 #endif /* __KERNEL__ */ 153 154 #define TEAM_STRING_MAX_LEN 32 155 156 /********************************** 157 * NETLINK_GENERIC netlink family. 158 **********************************/ 159 160 enum { 161 TEAM_CMD_NOOP, 162 TEAM_CMD_OPTIONS_SET, 163 TEAM_CMD_OPTIONS_GET, 164 TEAM_CMD_PORT_LIST_GET, 165 166 __TEAM_CMD_MAX, 167 TEAM_CMD_MAX = (__TEAM_CMD_MAX - 1), 168 }; 169 170 enum { 171 TEAM_ATTR_UNSPEC, 172 TEAM_ATTR_TEAM_IFINDEX, /* u32 */ 173 TEAM_ATTR_LIST_OPTION, /* nest */ 174 TEAM_ATTR_LIST_PORT, /* nest */ 175 176 __TEAM_ATTR_MAX, 177 TEAM_ATTR_MAX = __TEAM_ATTR_MAX - 1, 178 }; 179 180 /* Nested layout of get/set msg: 181 * 182 * [TEAM_ATTR_LIST_OPTION] 183 * [TEAM_ATTR_ITEM_OPTION] 184 * [TEAM_ATTR_OPTION_*], ... 185 * [TEAM_ATTR_ITEM_OPTION] 186 * [TEAM_ATTR_OPTION_*], ... 187 * ... 188 * [TEAM_ATTR_LIST_PORT] 189 * [TEAM_ATTR_ITEM_PORT] 190 * [TEAM_ATTR_PORT_*], ... 191 * [TEAM_ATTR_ITEM_PORT] 192 * [TEAM_ATTR_PORT_*], ... 193 * ... 194 */ 195 196 enum { 197 TEAM_ATTR_ITEM_OPTION_UNSPEC, 198 TEAM_ATTR_ITEM_OPTION, /* nest */ 199 200 __TEAM_ATTR_ITEM_OPTION_MAX, 201 TEAM_ATTR_ITEM_OPTION_MAX = __TEAM_ATTR_ITEM_OPTION_MAX - 1, 202 }; 203 204 enum { 205 TEAM_ATTR_OPTION_UNSPEC, 206 TEAM_ATTR_OPTION_NAME, /* string */ 207 TEAM_ATTR_OPTION_CHANGED, /* flag */ 208 TEAM_ATTR_OPTION_TYPE, /* u8 */ 209 TEAM_ATTR_OPTION_DATA, /* dynamic */ 210 211 __TEAM_ATTR_OPTION_MAX, 212 TEAM_ATTR_OPTION_MAX = __TEAM_ATTR_OPTION_MAX - 1, 213 }; 214 215 enum { 216 TEAM_ATTR_ITEM_PORT_UNSPEC, 217 TEAM_ATTR_ITEM_PORT, /* nest */ 218 219 __TEAM_ATTR_ITEM_PORT_MAX, 220 TEAM_ATTR_ITEM_PORT_MAX = __TEAM_ATTR_ITEM_PORT_MAX - 1, 221 }; 222 223 enum { 224 TEAM_ATTR_PORT_UNSPEC, 225 TEAM_ATTR_PORT_IFINDEX, /* u32 */ 226 TEAM_ATTR_PORT_CHANGED, /* flag */ 227 TEAM_ATTR_PORT_LINKUP, /* flag */ 228 TEAM_ATTR_PORT_SPEED, /* u32 */ 229 TEAM_ATTR_PORT_DUPLEX, /* u8 */ 230 231 __TEAM_ATTR_PORT_MAX, 232 TEAM_ATTR_PORT_MAX = __TEAM_ATTR_PORT_MAX - 1, 233 }; 234 235 /* 236 * NETLINK_GENERIC related info 237 */ 238 #define TEAM_GENL_NAME "team" 239 #define TEAM_GENL_VERSION 0x1 240 #define TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME "change_event" 241 242 #endif /* _LINUX_IF_TEAM_H_ */ 243