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 /* Custom gennetlink interface related flags */ 50 bool changed; 51 bool removed; 52 53 struct rcu_head rcu; 54 }; 55 56 struct team_mode_ops { 57 int (*init)(struct team *team); 58 void (*exit)(struct team *team); 59 rx_handler_result_t (*receive)(struct team *team, 60 struct team_port *port, 61 struct sk_buff *skb); 62 bool (*transmit)(struct team *team, struct sk_buff *skb); 63 int (*port_enter)(struct team *team, struct team_port *port); 64 void (*port_leave)(struct team *team, struct team_port *port); 65 void (*port_change_mac)(struct team *team, struct team_port *port); 66 }; 67 68 enum team_option_type { 69 TEAM_OPTION_TYPE_U32, 70 TEAM_OPTION_TYPE_STRING, 71 }; 72 73 struct team_option { 74 struct list_head list; 75 const char *name; 76 enum team_option_type type; 77 int (*getter)(struct team *team, void *arg); 78 int (*setter)(struct team *team, void *arg); 79 80 /* Custom gennetlink interface related flags */ 81 bool changed; 82 bool removed; 83 }; 84 85 struct team_mode { 86 struct list_head list; 87 const char *kind; 88 struct module *owner; 89 size_t priv_size; 90 const struct team_mode_ops *ops; 91 }; 92 93 #define TEAM_PORT_HASHBITS 4 94 #define TEAM_PORT_HASHENTRIES (1 << TEAM_PORT_HASHBITS) 95 96 #define TEAM_MODE_PRIV_LONGS 4 97 #define TEAM_MODE_PRIV_SIZE (sizeof(long) * TEAM_MODE_PRIV_LONGS) 98 99 struct team { 100 struct net_device *dev; /* associated netdevice */ 101 struct team_pcpu_stats __percpu *pcpu_stats; 102 103 struct mutex lock; /* used for overall locking, e.g. port lists write */ 104 105 /* 106 * port lists with port count 107 */ 108 int port_count; 109 struct hlist_head port_hlist[TEAM_PORT_HASHENTRIES]; 110 struct list_head port_list; 111 112 struct list_head option_list; 113 114 const struct team_mode *mode; 115 struct team_mode_ops ops; 116 long mode_priv[TEAM_MODE_PRIV_LONGS]; 117 }; 118 119 static inline struct hlist_head *team_port_index_hash(struct team *team, 120 int port_index) 121 { 122 return &team->port_hlist[port_index & (TEAM_PORT_HASHENTRIES - 1)]; 123 } 124 125 static inline struct team_port *team_get_port_by_index(struct team *team, 126 int port_index) 127 { 128 struct hlist_node *p; 129 struct team_port *port; 130 struct hlist_head *head = team_port_index_hash(team, port_index); 131 132 hlist_for_each_entry(port, p, head, hlist) 133 if (port->index == port_index) 134 return port; 135 return NULL; 136 } 137 static inline struct team_port *team_get_port_by_index_rcu(struct team *team, 138 int port_index) 139 { 140 struct hlist_node *p; 141 struct team_port *port; 142 struct hlist_head *head = team_port_index_hash(team, port_index); 143 144 hlist_for_each_entry_rcu(port, p, head, hlist) 145 if (port->index == port_index) 146 return port; 147 return NULL; 148 } 149 150 extern int team_port_set_team_mac(struct team_port *port); 151 extern int team_options_register(struct team *team, 152 const struct team_option *option, 153 size_t option_count); 154 extern void team_options_unregister(struct team *team, 155 const struct team_option *option, 156 size_t option_count); 157 extern int team_mode_register(struct team_mode *mode); 158 extern int team_mode_unregister(struct team_mode *mode); 159 160 #endif /* __KERNEL__ */ 161 162 #define TEAM_STRING_MAX_LEN 32 163 164 /********************************** 165 * NETLINK_GENERIC netlink family. 166 **********************************/ 167 168 enum { 169 TEAM_CMD_NOOP, 170 TEAM_CMD_OPTIONS_SET, 171 TEAM_CMD_OPTIONS_GET, 172 TEAM_CMD_PORT_LIST_GET, 173 174 __TEAM_CMD_MAX, 175 TEAM_CMD_MAX = (__TEAM_CMD_MAX - 1), 176 }; 177 178 enum { 179 TEAM_ATTR_UNSPEC, 180 TEAM_ATTR_TEAM_IFINDEX, /* u32 */ 181 TEAM_ATTR_LIST_OPTION, /* nest */ 182 TEAM_ATTR_LIST_PORT, /* nest */ 183 184 __TEAM_ATTR_MAX, 185 TEAM_ATTR_MAX = __TEAM_ATTR_MAX - 1, 186 }; 187 188 /* Nested layout of get/set msg: 189 * 190 * [TEAM_ATTR_LIST_OPTION] 191 * [TEAM_ATTR_ITEM_OPTION] 192 * [TEAM_ATTR_OPTION_*], ... 193 * [TEAM_ATTR_ITEM_OPTION] 194 * [TEAM_ATTR_OPTION_*], ... 195 * ... 196 * [TEAM_ATTR_LIST_PORT] 197 * [TEAM_ATTR_ITEM_PORT] 198 * [TEAM_ATTR_PORT_*], ... 199 * [TEAM_ATTR_ITEM_PORT] 200 * [TEAM_ATTR_PORT_*], ... 201 * ... 202 */ 203 204 enum { 205 TEAM_ATTR_ITEM_OPTION_UNSPEC, 206 TEAM_ATTR_ITEM_OPTION, /* nest */ 207 208 __TEAM_ATTR_ITEM_OPTION_MAX, 209 TEAM_ATTR_ITEM_OPTION_MAX = __TEAM_ATTR_ITEM_OPTION_MAX - 1, 210 }; 211 212 enum { 213 TEAM_ATTR_OPTION_UNSPEC, 214 TEAM_ATTR_OPTION_NAME, /* string */ 215 TEAM_ATTR_OPTION_CHANGED, /* flag */ 216 TEAM_ATTR_OPTION_TYPE, /* u8 */ 217 TEAM_ATTR_OPTION_DATA, /* dynamic */ 218 TEAM_ATTR_OPTION_REMOVED, /* flag */ 219 220 __TEAM_ATTR_OPTION_MAX, 221 TEAM_ATTR_OPTION_MAX = __TEAM_ATTR_OPTION_MAX - 1, 222 }; 223 224 enum { 225 TEAM_ATTR_ITEM_PORT_UNSPEC, 226 TEAM_ATTR_ITEM_PORT, /* nest */ 227 228 __TEAM_ATTR_ITEM_PORT_MAX, 229 TEAM_ATTR_ITEM_PORT_MAX = __TEAM_ATTR_ITEM_PORT_MAX - 1, 230 }; 231 232 enum { 233 TEAM_ATTR_PORT_UNSPEC, 234 TEAM_ATTR_PORT_IFINDEX, /* u32 */ 235 TEAM_ATTR_PORT_CHANGED, /* flag */ 236 TEAM_ATTR_PORT_LINKUP, /* flag */ 237 TEAM_ATTR_PORT_SPEED, /* u32 */ 238 TEAM_ATTR_PORT_DUPLEX, /* u8 */ 239 TEAM_ATTR_PORT_REMOVED, /* flag */ 240 241 __TEAM_ATTR_PORT_MAX, 242 TEAM_ATTR_PORT_MAX = __TEAM_ATTR_PORT_MAX - 1, 243 }; 244 245 /* 246 * NETLINK_GENERIC related info 247 */ 248 #define TEAM_GENL_NAME "team" 249 #define TEAM_GENL_VERSION 0x1 250 #define TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME "change_event" 251 252 #endif /* _LINUX_IF_TEAM_H_ */ 253