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
;
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_ */