2 * include/linux/if_team.h - Network team device driver header
3 * Copyright (c) 2011 Jiri Pirko <jpirko@redhat.com>
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.
10 #ifndef _LINUX_IF_TEAM_H_
11 #define _LINUX_IF_TEAM_H_
13 #include <linux/netpoll.h>
14 #include <net/sch_generic.h>
15 #include <linux/types.h>
16 #include <uapi/linux/if_team.h>
18 struct team_pcpu_stats {
24 struct u64_stats_sync syncp;
32 struct net_device *dev;
33 struct hlist_node hlist; /* node in enabled ports hash list */
34 struct list_head list; /* node in ordinary list */
36 int index; /* index of enabled port. If disabled, it's set to -1 */
38 bool linkup; /* either state.linkup or user.linkup */
46 /* Values set by userspace */
52 /* Custom gennetlink interface related flags */
57 * A place for storing original values of the device before it
61 unsigned char dev_addr[MAX_ADDR_LEN];
65 #ifdef CONFIG_NET_POLL_CONTROLLER
69 s32 priority; /* lower number ~ higher priority */
71 struct list_head qom_list; /* node in queue override mapping list */
76 static inline bool team_port_enabled(struct team_port *port)
78 return port->index != -1;
81 static inline bool team_port_txable(struct team_port *port)
83 return port->linkup && team_port_enabled(port);
86 #ifdef CONFIG_NET_POLL_CONTROLLER
87 static inline void team_netpoll_send_skb(struct team_port *port,
90 struct netpoll *np = port->np;
93 netpoll_send_skb(np, skb);
96 static inline void team_netpoll_send_skb(struct team_port *port,
102 struct team_mode_ops {
103 int (*init)(struct team *team);
104 void (*exit)(struct team *team);
105 rx_handler_result_t (*receive)(struct team *team,
106 struct team_port *port,
107 struct sk_buff *skb);
108 bool (*transmit)(struct team *team, struct sk_buff *skb);
109 int (*port_enter)(struct team *team, struct team_port *port);
110 void (*port_leave)(struct team *team, struct team_port *port);
111 void (*port_change_dev_addr)(struct team *team, struct team_port *port);
112 void (*port_enabled)(struct team *team, struct team_port *port);
113 void (*port_disabled)(struct team *team, struct team_port *port);
116 extern int team_modeop_port_enter(struct team *team, struct team_port *port);
117 extern void team_modeop_port_change_dev_addr(struct team *team,
118 struct team_port *port);
120 enum team_option_type {
121 TEAM_OPTION_TYPE_U32,
122 TEAM_OPTION_TYPE_STRING,
123 TEAM_OPTION_TYPE_BINARY,
124 TEAM_OPTION_TYPE_BOOL,
125 TEAM_OPTION_TYPE_S32,
128 struct team_option_inst_info {
130 struct team_port *port; /* != NULL if per-port */
133 struct team_gsetter_ctx {
144 struct team_option_inst_info *info;
148 struct list_head list;
151 unsigned int array_size; /* != 0 means the option is array */
152 enum team_option_type type;
153 int (*init)(struct team *team, struct team_option_inst_info *info);
154 int (*getter)(struct team *team, struct team_gsetter_ctx *ctx);
155 int (*setter)(struct team *team, struct team_gsetter_ctx *ctx);
158 extern void team_option_inst_set_change(struct team_option_inst_info *opt_inst_info);
159 extern void team_options_change_check(struct team *team);
163 struct module *owner;
165 size_t port_priv_size;
166 const struct team_mode_ops *ops;
169 #define TEAM_PORT_HASHBITS 4
170 #define TEAM_PORT_HASHENTRIES (1 << TEAM_PORT_HASHBITS)
172 #define TEAM_MODE_PRIV_LONGS 4
173 #define TEAM_MODE_PRIV_SIZE (sizeof(long) * TEAM_MODE_PRIV_LONGS)
176 struct net_device *dev; /* associated netdevice */
177 struct team_pcpu_stats __percpu *pcpu_stats;
179 struct mutex lock; /* used for overall locking, e.g. port lists write */
182 * List of enabled ports and their count
185 struct hlist_head en_port_hlist[TEAM_PORT_HASHENTRIES];
187 struct list_head port_list; /* list of all ports */
189 struct list_head option_list;
190 struct list_head option_inst_list; /* list of option instances */
192 const struct team_mode *mode;
193 struct team_mode_ops ops;
194 bool user_carrier_enabled;
195 bool queue_override_enabled;
196 struct list_head *qom_lists; /* array of queue override mapping lists */
199 unsigned int interval; /* in ms */
200 atomic_t count_pending;
201 struct delayed_work dw;
203 long mode_priv[TEAM_MODE_PRIV_LONGS];
206 static inline int team_dev_queue_xmit(struct team *team, struct team_port *port,
209 BUILD_BUG_ON(sizeof(skb->queue_mapping) !=
210 sizeof(qdisc_skb_cb(skb)->slave_dev_queue_mapping));
211 skb_set_queue_mapping(skb, qdisc_skb_cb(skb)->slave_dev_queue_mapping);
213 skb->dev = port->dev;
214 if (unlikely(netpoll_tx_running(team->dev))) {
215 team_netpoll_send_skb(port, skb);
218 return dev_queue_xmit(skb);
221 static inline struct hlist_head *team_port_index_hash(struct team *team,
224 return &team->en_port_hlist[port_index & (TEAM_PORT_HASHENTRIES - 1)];
227 static inline struct team_port *team_get_port_by_index(struct team *team,
230 struct team_port *port;
231 struct hlist_head *head = team_port_index_hash(team, port_index);
233 hlist_for_each_entry(port, head, hlist)
234 if (port->index == port_index)
239 static inline int team_num_to_port_index(struct team *team, int num)
241 int en_port_count = ACCESS_ONCE(team->en_port_count);
243 if (unlikely(!en_port_count))
245 return num % en_port_count;
248 static inline struct team_port *team_get_port_by_index_rcu(struct team *team,
251 struct team_port *port;
252 struct hlist_head *head = team_port_index_hash(team, port_index);
254 hlist_for_each_entry_rcu(port, head, hlist)
255 if (port->index == port_index)
260 static inline struct team_port *
261 team_get_first_port_txable_rcu(struct team *team, struct team_port *port)
263 struct team_port *cur;
265 if (likely(team_port_txable(port)))
268 list_for_each_entry_continue_rcu(cur, &team->port_list, list)
269 if (team_port_txable(cur))
271 list_for_each_entry_rcu(cur, &team->port_list, list) {
274 if (team_port_txable(cur))
280 extern int team_options_register(struct team *team,
281 const struct team_option *option,
282 size_t option_count);
283 extern void team_options_unregister(struct team *team,
284 const struct team_option *option,
285 size_t option_count);
286 extern int team_mode_register(const struct team_mode *mode);
287 extern void team_mode_unregister(const struct team_mode *mode);
289 #define TEAM_DEFAULT_NUM_TX_QUEUES 16
290 #define TEAM_DEFAULT_NUM_RX_QUEUES 16
292 #endif /* _LINUX_IF_TEAM_H_ */