2 * include/linux/if_team.h - Network team device driver header
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;
33 struct net_device *dev;
34 struct hlist_node hlist; /* node in enabled ports hash list */
35 struct list_head list; /* node in ordinary list */
37 int index; /* index of enabled port. If disabled, it's set to -1 */
39 bool linkup; /* either state.linkup or user.linkup */
47 /* Values set by userspace */
53 /* Custom gennetlink interface related flags */
58 * A place for storing original values of the device before it
62 unsigned char dev_addr[MAX_ADDR_LEN];
66 #ifdef CONFIG_NET_POLL_CONTROLLER
70 s32 priority; /* lower number ~ higher priority */
72 struct list_head qom_list; /* node in queue override mapping list */
77 static inline struct team_port *team_port_get_rcu(const struct net_device *dev)
79 return rcu_dereference(dev->rx_handler_data);
82 static inline bool team_port_enabled(struct team_port *port)
84 return port->index != -1;
87 static inline bool team_port_txable(struct team_port *port)
89 return port->linkup && team_port_enabled(port);
92 static inline bool team_port_dev_txable(const struct net_device *port_dev)
94 struct team_port *port;
98 port = team_port_get_rcu(port_dev);
99 txable = port ? team_port_txable(port) : false;
105 #ifdef CONFIG_NET_POLL_CONTROLLER
106 static inline void team_netpoll_send_skb(struct team_port *port,
109 struct netpoll *np = port->np;
112 netpoll_send_skb(np, skb);
115 static inline void team_netpoll_send_skb(struct team_port *port,
121 struct team_mode_ops {
122 int (*init)(struct team *team);
123 void (*exit)(struct team *team);
124 rx_handler_result_t (*receive)(struct team *team,
125 struct team_port *port,
126 struct sk_buff *skb);
127 bool (*transmit)(struct team *team, struct sk_buff *skb);
128 int (*port_enter)(struct team *team, struct team_port *port);
129 void (*port_leave)(struct team *team, struct team_port *port);
130 void (*port_change_dev_addr)(struct team *team, struct team_port *port);
131 void (*port_enabled)(struct team *team, struct team_port *port);
132 void (*port_disabled)(struct team *team, struct team_port *port);
135 extern int team_modeop_port_enter(struct team *team, struct team_port *port);
136 extern void team_modeop_port_change_dev_addr(struct team *team,
137 struct team_port *port);
139 enum team_option_type {
140 TEAM_OPTION_TYPE_U32,
141 TEAM_OPTION_TYPE_STRING,
142 TEAM_OPTION_TYPE_BINARY,
143 TEAM_OPTION_TYPE_BOOL,
144 TEAM_OPTION_TYPE_S32,
147 struct team_option_inst_info {
149 struct team_port *port; /* != NULL if per-port */
152 struct team_gsetter_ctx {
163 struct team_option_inst_info *info;
167 struct list_head list;
170 unsigned int array_size; /* != 0 means the option is array */
171 enum team_option_type type;
172 int (*init)(struct team *team, struct team_option_inst_info *info);
173 int (*getter)(struct team *team, struct team_gsetter_ctx *ctx);
174 int (*setter)(struct team *team, struct team_gsetter_ctx *ctx);
177 extern void team_option_inst_set_change(struct team_option_inst_info *opt_inst_info);
178 extern void team_options_change_check(struct team *team);
182 struct module *owner;
184 size_t port_priv_size;
185 const struct team_mode_ops *ops;
186 enum netdev_lag_tx_type lag_tx_type;
189 #define TEAM_PORT_HASHBITS 4
190 #define TEAM_PORT_HASHENTRIES (1 << TEAM_PORT_HASHBITS)
192 #define TEAM_MODE_PRIV_LONGS 4
193 #define TEAM_MODE_PRIV_SIZE (sizeof(long) * TEAM_MODE_PRIV_LONGS)
196 struct net_device *dev; /* associated netdevice */
197 struct team_pcpu_stats __percpu *pcpu_stats;
199 struct mutex lock; /* used for overall locking, e.g. port lists write */
202 * List of enabled ports and their count
205 struct hlist_head en_port_hlist[TEAM_PORT_HASHENTRIES];
207 struct list_head port_list; /* list of all ports */
209 struct list_head option_list;
210 struct list_head option_inst_list; /* list of option instances */
212 const struct team_mode *mode;
213 struct team_mode_ops ops;
214 bool user_carrier_enabled;
215 bool queue_override_enabled;
216 struct list_head *qom_lists; /* array of queue override mapping lists */
217 bool port_mtu_change_allowed;
220 unsigned int interval; /* in ms */
221 atomic_t count_pending;
222 struct delayed_work dw;
226 unsigned int interval; /* in ms */
227 atomic_t count_pending;
228 struct delayed_work dw;
230 long mode_priv[TEAM_MODE_PRIV_LONGS];
233 static inline int team_dev_queue_xmit(struct team *team, struct team_port *port,
236 BUILD_BUG_ON(sizeof(skb->queue_mapping) !=
237 sizeof(qdisc_skb_cb(skb)->slave_dev_queue_mapping));
238 skb_set_queue_mapping(skb, qdisc_skb_cb(skb)->slave_dev_queue_mapping);
240 skb->dev = port->dev;
241 if (unlikely(netpoll_tx_running(team->dev))) {
242 team_netpoll_send_skb(port, skb);
245 return dev_queue_xmit(skb);
248 static inline struct hlist_head *team_port_index_hash(struct team *team,
251 return &team->en_port_hlist[port_index & (TEAM_PORT_HASHENTRIES - 1)];
254 static inline struct team_port *team_get_port_by_index(struct team *team,
257 struct team_port *port;
258 struct hlist_head *head = team_port_index_hash(team, port_index);
260 hlist_for_each_entry(port, head, hlist)
261 if (port->index == port_index)
266 static inline int team_num_to_port_index(struct team *team, unsigned int num)
268 int en_port_count = READ_ONCE(team->en_port_count);
270 if (unlikely(!en_port_count))
272 return num % en_port_count;
275 static inline struct team_port *team_get_port_by_index_rcu(struct team *team,
278 struct team_port *port;
279 struct hlist_head *head = team_port_index_hash(team, port_index);
281 hlist_for_each_entry_rcu(port, head, hlist)
282 if (port->index == port_index)
287 static inline struct team_port *
288 team_get_first_port_txable_rcu(struct team *team, struct team_port *port)
290 struct team_port *cur;
292 if (likely(team_port_txable(port)))
295 list_for_each_entry_continue_rcu(cur, &team->port_list, list)
296 if (team_port_txable(cur))
298 list_for_each_entry_rcu(cur, &team->port_list, list) {
301 if (team_port_txable(cur))
307 extern int team_options_register(struct team *team,
308 const struct team_option *option,
309 size_t option_count);
310 extern void team_options_unregister(struct team *team,
311 const struct team_option *option,
312 size_t option_count);
313 extern int team_mode_register(const struct team_mode *mode);
314 extern void team_mode_unregister(const struct team_mode *mode);
316 #define TEAM_DEFAULT_NUM_TX_QUEUES 16
317 #define TEAM_DEFAULT_NUM_RX_QUEUES 16
319 #define MODULE_ALIAS_TEAM_MODE(kind) MODULE_ALIAS("team-mode-" kind)
321 #endif /* _LINUX_IF_TEAM_H_ */