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3d249d4c JP |
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 | */ | |
3d249d4c JP |
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 | |
3d249d4c JP |
18 | struct 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 | ||
29 | struct team; | |
30 | ||
31 | struct team_port { | |
32 | struct net_device *dev; | |
19a0b58e | 33 | struct hlist_node hlist; /* node in enabled ports hash list */ |
3d249d4c JP |
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 | |
71472ec1 JP |
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 | ||
3d249d4c JP |
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 | ||
bd2d0837 JP |
65 | #ifdef CONFIG_NET_POLL_CONTROLLER |
66 | struct netpoll *np; | |
67 | #endif | |
68 | ||
a86fc6b7 | 69 | s32 priority; /* lower number ~ higher priority */ |
8ff5105a JP |
70 | u16 queue_id; |
71 | struct list_head qom_list; /* node in queue override mapping list */ | |
5149ee58 | 72 | long mode_priv[0]; |
3d249d4c JP |
73 | }; |
74 | ||
68c45042 JP |
75 | static inline bool team_port_enabled(struct team_port *port) |
76 | { | |
77 | return port->index != -1; | |
78 | } | |
79 | ||
80 | static inline bool team_port_txable(struct team_port *port) | |
81 | { | |
82 | return port->linkup && team_port_enabled(port); | |
83 | } | |
52a4fd77 | 84 | |
bd2d0837 JP |
85 | #ifdef CONFIG_NET_POLL_CONTROLLER |
86 | static 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 | |
95 | static inline void team_netpoll_send_skb(struct team_port *port, | |
96 | struct sk_buff *skb) | |
97 | { | |
98 | } | |
99 | #endif | |
100 | ||
3d249d4c JP |
101 | struct 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); |
4bccfd17 JP |
111 | void (*port_enabled)(struct team *team, struct team_port *port); |
112 | void (*port_disabled)(struct team *team, struct team_port *port); | |
3d249d4c JP |
113 | }; |
114 | ||
acbba0d0 JP |
115 | extern int team_modeop_port_enter(struct team *team, struct team_port *port); |
116 | extern void team_modeop_port_change_dev_addr(struct team *team, | |
117 | struct team_port *port); | |
118 | ||
3d249d4c JP |
119 | enum team_option_type { |
120 | TEAM_OPTION_TYPE_U32, | |
121 | TEAM_OPTION_TYPE_STRING, | |
2615598f | 122 | TEAM_OPTION_TYPE_BINARY, |
14f066ba | 123 | TEAM_OPTION_TYPE_BOOL, |
69821638 | 124 | TEAM_OPTION_TYPE_S32, |
3d249d4c JP |
125 | }; |
126 | ||
85d59a87 JP |
127 | struct team_option_inst_info { |
128 | u32 array_index; | |
129 | struct team_port *port; /* != NULL if per-port */ | |
130 | }; | |
131 | ||
80f7c668 JP |
132 | struct team_gsetter_ctx { |
133 | union { | |
134 | u32 u32_val; | |
135 | const char *str_val; | |
136 | struct { | |
137 | const void *ptr; | |
138 | u32 len; | |
139 | } bin_val; | |
14f066ba | 140 | bool bool_val; |
69821638 | 141 | s32 s32_val; |
80f7c668 | 142 | } data; |
85d59a87 | 143 | struct team_option_inst_info *info; |
80f7c668 JP |
144 | }; |
145 | ||
3d249d4c JP |
146 | struct team_option { |
147 | struct list_head list; | |
148 | const char *name; | |
80f7c668 | 149 | bool per_port; |
b1303326 | 150 | unsigned int array_size; /* != 0 means the option is array */ |
3d249d4c | 151 | enum team_option_type type; |
85d59a87 | 152 | int (*init)(struct team *team, struct team_option_inst_info *info); |
80f7c668 JP |
153 | int (*getter)(struct team *team, struct team_gsetter_ctx *ctx); |
154 | int (*setter)(struct team *team, struct team_gsetter_ctx *ctx); | |
3d249d4c JP |
155 | }; |
156 | ||
0f1aad2b JP |
157 | extern void team_option_inst_set_change(struct team_option_inst_info *opt_inst_info); |
158 | extern void team_options_change_check(struct team *team); | |
159 | ||
3d249d4c | 160 | struct team_mode { |
3d249d4c JP |
161 | const char *kind; |
162 | struct module *owner; | |
163 | size_t priv_size; | |
5149ee58 | 164 | size_t port_priv_size; |
3d249d4c JP |
165 | const struct team_mode_ops *ops; |
166 | }; | |
167 | ||
168 | #define TEAM_PORT_HASHBITS 4 | |
169 | #define TEAM_PORT_HASHENTRIES (1 << TEAM_PORT_HASHBITS) | |
170 | ||
171 | #define TEAM_MODE_PRIV_LONGS 4 | |
172 | #define TEAM_MODE_PRIV_SIZE (sizeof(long) * TEAM_MODE_PRIV_LONGS) | |
173 | ||
174 | struct team { | |
175 | struct net_device *dev; /* associated netdevice */ | |
176 | struct team_pcpu_stats __percpu *pcpu_stats; | |
177 | ||
61dc3461 | 178 | struct mutex lock; /* used for overall locking, e.g. port lists write */ |
3d249d4c JP |
179 | |
180 | /* | |
19a0b58e | 181 | * List of enabled ports and their count |
3d249d4c | 182 | */ |
19a0b58e JP |
183 | int en_port_count; |
184 | struct hlist_head en_port_hlist[TEAM_PORT_HASHENTRIES]; | |
185 | ||
186 | struct list_head port_list; /* list of all ports */ | |
3d249d4c JP |
187 | |
188 | struct list_head option_list; | |
80f7c668 | 189 | struct list_head option_inst_list; /* list of option instances */ |
3d249d4c JP |
190 | |
191 | const struct team_mode *mode; | |
192 | struct team_mode_ops ops; | |
e185483e | 193 | bool user_carrier_enabled; |
8ff5105a JP |
194 | bool queue_override_enabled; |
195 | struct list_head *qom_lists; /* array of queue override mapping lists */ | |
3d249d4c JP |
196 | long mode_priv[TEAM_MODE_PRIV_LONGS]; |
197 | }; | |
198 | ||
e15c3c22 AW |
199 | static inline int team_dev_queue_xmit(struct team *team, struct team_port *port, |
200 | struct sk_buff *skb) | |
201 | { | |
202 | BUILD_BUG_ON(sizeof(skb->queue_mapping) != | |
203 | sizeof(qdisc_skb_cb(skb)->slave_dev_queue_mapping)); | |
204 | skb_set_queue_mapping(skb, qdisc_skb_cb(skb)->slave_dev_queue_mapping); | |
205 | ||
206 | skb->dev = port->dev; | |
207 | if (unlikely(netpoll_tx_running(team->dev))) { | |
208 | team_netpoll_send_skb(port, skb); | |
209 | return 0; | |
210 | } | |
211 | return dev_queue_xmit(skb); | |
212 | } | |
213 | ||
3d249d4c JP |
214 | static inline struct hlist_head *team_port_index_hash(struct team *team, |
215 | int port_index) | |
216 | { | |
19a0b58e | 217 | return &team->en_port_hlist[port_index & (TEAM_PORT_HASHENTRIES - 1)]; |
3d249d4c JP |
218 | } |
219 | ||
220 | static inline struct team_port *team_get_port_by_index(struct team *team, | |
221 | int port_index) | |
222 | { | |
3d249d4c JP |
223 | struct team_port *port; |
224 | struct hlist_head *head = team_port_index_hash(team, port_index); | |
225 | ||
b67bfe0d | 226 | hlist_for_each_entry(port, head, hlist) |
3d249d4c JP |
227 | if (port->index == port_index) |
228 | return port; | |
229 | return NULL; | |
230 | } | |
231 | static inline struct team_port *team_get_port_by_index_rcu(struct team *team, | |
232 | int port_index) | |
233 | { | |
3d249d4c JP |
234 | struct team_port *port; |
235 | struct hlist_head *head = team_port_index_hash(team, port_index); | |
236 | ||
b67bfe0d | 237 | hlist_for_each_entry_rcu(port, head, hlist) |
3d249d4c JP |
238 | if (port->index == port_index) |
239 | return port; | |
240 | return NULL; | |
241 | } | |
242 | ||
753f9939 JP |
243 | static inline struct team_port * |
244 | team_get_first_port_txable_rcu(struct team *team, struct team_port *port) | |
245 | { | |
246 | struct team_port *cur; | |
247 | ||
248 | if (likely(team_port_txable(port))) | |
249 | return port; | |
250 | cur = port; | |
251 | list_for_each_entry_continue_rcu(cur, &team->port_list, list) | |
252 | if (team_port_txable(port)) | |
253 | return cur; | |
254 | list_for_each_entry_rcu(cur, &team->port_list, list) { | |
255 | if (cur == port) | |
256 | break; | |
257 | if (team_port_txable(port)) | |
258 | return cur; | |
259 | } | |
260 | return NULL; | |
261 | } | |
262 | ||
358b8382 JP |
263 | extern int team_options_register(struct team *team, |
264 | const struct team_option *option, | |
265 | size_t option_count); | |
3d249d4c | 266 | extern void team_options_unregister(struct team *team, |
358b8382 | 267 | const struct team_option *option, |
3d249d4c | 268 | size_t option_count); |
0402788a JP |
269 | extern int team_mode_register(const struct team_mode *mode); |
270 | extern void team_mode_unregister(const struct team_mode *mode); | |
3d249d4c | 271 | |
6c85f2bd JP |
272 | #define TEAM_DEFAULT_NUM_TX_QUEUES 16 |
273 | #define TEAM_DEFAULT_NUM_RX_QUEUES 16 | |
274 | ||
3d249d4c | 275 | #endif /* _LINUX_IF_TEAM_H_ */ |