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1/*
2 * include/linux/if_team.h - Network team device driver header
3 * Copyright (c) 2011 Jiri Pirko <jpirko@redhat.com>
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 */
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10#ifndef _LINUX_IF_TEAM_H_
11#define _LINUX_IF_TEAM_H_
12
3d249d4c 13
bd2d0837 14#include <linux/netpoll.h>
6c85f2bd 15#include <net/sch_generic.h>
607ca46e 16#include <uapi/linux/if_team.h>
bd2d0837 17
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18struct team_pcpu_stats {
19 u64 rx_packets;
20 u64 rx_bytes;
21 u64 rx_multicast;
22 u64 tx_packets;
23 u64 tx_bytes;
24 struct u64_stats_sync syncp;
25 u32 rx_dropped;
26 u32 tx_dropped;
27};
28
29struct team;
30
31struct team_port {
32 struct net_device *dev;
19a0b58e 33 struct hlist_node hlist; /* node in enabled ports hash list */
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34 struct list_head list; /* node in ordinary list */
35 struct team *team;
19a0b58e 36 int index; /* index of enabled port. If disabled, it's set to -1 */
3d249d4c 37
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38 bool linkup; /* either state.linkup or user.linkup */
39
40 struct {
41 bool linkup;
42 u32 speed;
43 u8 duplex;
44 } state;
45
46 /* Values set by userspace */
47 struct {
48 bool linkup;
49 bool linkup_enabled;
50 } user;
51
52 /* Custom gennetlink interface related flags */
53 bool changed;
54 bool removed;
55
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56 /*
57 * A place for storing original values of the device before it
58 * become a port.
59 */
60 struct {
61 unsigned char dev_addr[MAX_ADDR_LEN];
62 unsigned int mtu;
63 } orig;
64
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65#ifdef CONFIG_NET_POLL_CONTROLLER
66 struct netpoll *np;
67#endif
68
a86fc6b7 69 s32 priority; /* lower number ~ higher priority */
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70 u16 queue_id;
71 struct list_head qom_list; /* node in queue override mapping list */
5149ee58 72 long mode_priv[0];
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73};
74
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75static inline bool team_port_enabled(struct team_port *port)
76{
77 return port->index != -1;
78}
79
80static inline bool team_port_txable(struct team_port *port)
81{
82 return port->linkup && team_port_enabled(port);
83}
52a4fd77 84
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85#ifdef CONFIG_NET_POLL_CONTROLLER
86static inline void team_netpoll_send_skb(struct team_port *port,
87 struct sk_buff *skb)
88{
89 struct netpoll *np = port->np;
90
91 if (np)
92 netpoll_send_skb(np, skb);
93}
94#else
95static inline void team_netpoll_send_skb(struct team_port *port,
96 struct sk_buff *skb)
97{
98}
99#endif
100
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101struct team_mode_ops {
102 int (*init)(struct team *team);
103 void (*exit)(struct team *team);
104 rx_handler_result_t (*receive)(struct team *team,
105 struct team_port *port,
106 struct sk_buff *skb);
107 bool (*transmit)(struct team *team, struct sk_buff *skb);
108 int (*port_enter)(struct team *team, struct team_port *port);
109 void (*port_leave)(struct team *team, struct team_port *port);
1d76efe1 110 void (*port_change_dev_addr)(struct team *team, struct team_port *port);
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111 void (*port_enabled)(struct team *team, struct team_port *port);
112 void (*port_disabled)(struct team *team, struct team_port *port);
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113};
114
115enum team_option_type {
116 TEAM_OPTION_TYPE_U32,
117 TEAM_OPTION_TYPE_STRING,
2615598f 118 TEAM_OPTION_TYPE_BINARY,
14f066ba 119 TEAM_OPTION_TYPE_BOOL,
69821638 120 TEAM_OPTION_TYPE_S32,
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121};
122
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123struct team_option_inst_info {
124 u32 array_index;
125 struct team_port *port; /* != NULL if per-port */
126};
127
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128struct team_gsetter_ctx {
129 union {
130 u32 u32_val;
131 const char *str_val;
132 struct {
133 const void *ptr;
134 u32 len;
135 } bin_val;
14f066ba 136 bool bool_val;
69821638 137 s32 s32_val;
80f7c668 138 } data;
85d59a87 139 struct team_option_inst_info *info;
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140};
141
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142struct team_option {
143 struct list_head list;
144 const char *name;
80f7c668 145 bool per_port;
b1303326 146 unsigned int array_size; /* != 0 means the option is array */
3d249d4c 147 enum team_option_type type;
85d59a87 148 int (*init)(struct team *team, struct team_option_inst_info *info);
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149 int (*getter)(struct team *team, struct team_gsetter_ctx *ctx);
150 int (*setter)(struct team *team, struct team_gsetter_ctx *ctx);
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151};
152
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153extern void team_option_inst_set_change(struct team_option_inst_info *opt_inst_info);
154extern void team_options_change_check(struct team *team);
155
3d249d4c 156struct team_mode {
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157 const char *kind;
158 struct module *owner;
159 size_t priv_size;
5149ee58 160 size_t port_priv_size;
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161 const struct team_mode_ops *ops;
162};
163
164#define TEAM_PORT_HASHBITS 4
165#define TEAM_PORT_HASHENTRIES (1 << TEAM_PORT_HASHBITS)
166
167#define TEAM_MODE_PRIV_LONGS 4
168#define TEAM_MODE_PRIV_SIZE (sizeof(long) * TEAM_MODE_PRIV_LONGS)
169
170struct team {
171 struct net_device *dev; /* associated netdevice */
172 struct team_pcpu_stats __percpu *pcpu_stats;
173
61dc3461 174 struct mutex lock; /* used for overall locking, e.g. port lists write */
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175
176 /*
19a0b58e 177 * List of enabled ports and their count
3d249d4c 178 */
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179 int en_port_count;
180 struct hlist_head en_port_hlist[TEAM_PORT_HASHENTRIES];
181
182 struct list_head port_list; /* list of all ports */
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183
184 struct list_head option_list;
80f7c668 185 struct list_head option_inst_list; /* list of option instances */
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186
187 const struct team_mode *mode;
188 struct team_mode_ops ops;
e185483e 189 bool user_carrier_enabled;
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190 bool queue_override_enabled;
191 struct list_head *qom_lists; /* array of queue override mapping lists */
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192 long mode_priv[TEAM_MODE_PRIV_LONGS];
193};
194
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195static inline int team_dev_queue_xmit(struct team *team, struct team_port *port,
196 struct sk_buff *skb)
197{
198 BUILD_BUG_ON(sizeof(skb->queue_mapping) !=
199 sizeof(qdisc_skb_cb(skb)->slave_dev_queue_mapping));
200 skb_set_queue_mapping(skb, qdisc_skb_cb(skb)->slave_dev_queue_mapping);
201
202 skb->dev = port->dev;
203 if (unlikely(netpoll_tx_running(team->dev))) {
204 team_netpoll_send_skb(port, skb);
205 return 0;
206 }
207 return dev_queue_xmit(skb);
208}
209
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210static inline struct hlist_head *team_port_index_hash(struct team *team,
211 int port_index)
212{
19a0b58e 213 return &team->en_port_hlist[port_index & (TEAM_PORT_HASHENTRIES - 1)];
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214}
215
216static inline struct team_port *team_get_port_by_index(struct team *team,
217 int port_index)
218{
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219 struct team_port *port;
220 struct hlist_head *head = team_port_index_hash(team, port_index);
221
b67bfe0d 222 hlist_for_each_entry(port, head, hlist)
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223 if (port->index == port_index)
224 return port;
225 return NULL;
226}
227static inline struct team_port *team_get_port_by_index_rcu(struct team *team,
228 int port_index)
229{
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230 struct team_port *port;
231 struct hlist_head *head = team_port_index_hash(team, port_index);
232
b67bfe0d 233 hlist_for_each_entry_rcu(port, head, hlist)
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234 if (port->index == port_index)
235 return port;
236 return NULL;
237}
238
1d76efe1 239extern int team_port_set_team_dev_addr(struct team_port *port);
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240extern int team_options_register(struct team *team,
241 const struct team_option *option,
242 size_t option_count);
3d249d4c 243extern void team_options_unregister(struct team *team,
358b8382 244 const struct team_option *option,
3d249d4c 245 size_t option_count);
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246extern int team_mode_register(const struct team_mode *mode);
247extern void team_mode_unregister(const struct team_mode *mode);
3d249d4c 248
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249#define TEAM_DEFAULT_NUM_TX_QUEUES 16
250#define TEAM_DEFAULT_NUM_RX_QUEUES 16
251
3d249d4c 252#endif /* _LINUX_IF_TEAM_H_ */