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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 | */ | |
10 | ||
11 | #ifndef _LINUX_IF_TEAM_H_ | |
12 | #define _LINUX_IF_TEAM_H_ | |
13 | ||
14 | #ifdef __KERNEL__ | |
15 | ||
16 | struct team_pcpu_stats { | |
17 | u64 rx_packets; | |
18 | u64 rx_bytes; | |
19 | u64 rx_multicast; | |
20 | u64 tx_packets; | |
21 | u64 tx_bytes; | |
22 | struct u64_stats_sync syncp; | |
23 | u32 rx_dropped; | |
24 | u32 tx_dropped; | |
25 | }; | |
26 | ||
27 | struct team; | |
28 | ||
29 | struct team_port { | |
30 | struct net_device *dev; | |
19a0b58e | 31 | struct hlist_node hlist; /* node in enabled ports hash list */ |
3d249d4c JP |
32 | struct list_head list; /* node in ordinary list */ |
33 | struct team *team; | |
19a0b58e | 34 | int index; /* index of enabled port. If disabled, it's set to -1 */ |
3d249d4c | 35 | |
71472ec1 JP |
36 | bool linkup; /* either state.linkup or user.linkup */ |
37 | ||
38 | struct { | |
39 | bool linkup; | |
40 | u32 speed; | |
41 | u8 duplex; | |
42 | } state; | |
43 | ||
44 | /* Values set by userspace */ | |
45 | struct { | |
46 | bool linkup; | |
47 | bool linkup_enabled; | |
48 | } user; | |
49 | ||
50 | /* Custom gennetlink interface related flags */ | |
51 | bool changed; | |
52 | bool removed; | |
53 | ||
3d249d4c JP |
54 | /* |
55 | * A place for storing original values of the device before it | |
56 | * become a port. | |
57 | */ | |
58 | struct { | |
59 | unsigned char dev_addr[MAX_ADDR_LEN]; | |
60 | unsigned int mtu; | |
61 | } orig; | |
62 | ||
5149ee58 | 63 | long mode_priv[0]; |
3d249d4c JP |
64 | }; |
65 | ||
68c45042 JP |
66 | static inline bool team_port_enabled(struct team_port *port) |
67 | { | |
68 | return port->index != -1; | |
69 | } | |
70 | ||
71 | static inline bool team_port_txable(struct team_port *port) | |
72 | { | |
73 | return port->linkup && team_port_enabled(port); | |
74 | } | |
52a4fd77 | 75 | |
3d249d4c JP |
76 | struct team_mode_ops { |
77 | int (*init)(struct team *team); | |
78 | void (*exit)(struct team *team); | |
79 | rx_handler_result_t (*receive)(struct team *team, | |
80 | struct team_port *port, | |
81 | struct sk_buff *skb); | |
82 | bool (*transmit)(struct team *team, struct sk_buff *skb); | |
83 | int (*port_enter)(struct team *team, struct team_port *port); | |
84 | void (*port_leave)(struct team *team, struct team_port *port); | |
85 | void (*port_change_mac)(struct team *team, struct team_port *port); | |
4bccfd17 JP |
86 | void (*port_enabled)(struct team *team, struct team_port *port); |
87 | void (*port_disabled)(struct team *team, struct team_port *port); | |
3d249d4c JP |
88 | }; |
89 | ||
90 | enum team_option_type { | |
91 | TEAM_OPTION_TYPE_U32, | |
92 | TEAM_OPTION_TYPE_STRING, | |
2615598f | 93 | TEAM_OPTION_TYPE_BINARY, |
14f066ba | 94 | TEAM_OPTION_TYPE_BOOL, |
3d249d4c JP |
95 | }; |
96 | ||
85d59a87 JP |
97 | struct team_option_inst_info { |
98 | u32 array_index; | |
99 | struct team_port *port; /* != NULL if per-port */ | |
100 | }; | |
101 | ||
80f7c668 JP |
102 | struct team_gsetter_ctx { |
103 | union { | |
104 | u32 u32_val; | |
105 | const char *str_val; | |
106 | struct { | |
107 | const void *ptr; | |
108 | u32 len; | |
109 | } bin_val; | |
14f066ba | 110 | bool bool_val; |
80f7c668 | 111 | } data; |
85d59a87 | 112 | struct team_option_inst_info *info; |
80f7c668 JP |
113 | }; |
114 | ||
3d249d4c JP |
115 | struct team_option { |
116 | struct list_head list; | |
117 | const char *name; | |
80f7c668 | 118 | bool per_port; |
b1303326 | 119 | unsigned int array_size; /* != 0 means the option is array */ |
3d249d4c | 120 | enum team_option_type type; |
85d59a87 | 121 | int (*init)(struct team *team, struct team_option_inst_info *info); |
80f7c668 JP |
122 | int (*getter)(struct team *team, struct team_gsetter_ctx *ctx); |
123 | int (*setter)(struct team *team, struct team_gsetter_ctx *ctx); | |
3d249d4c JP |
124 | }; |
125 | ||
0f1aad2b JP |
126 | extern void team_option_inst_set_change(struct team_option_inst_info *opt_inst_info); |
127 | extern void team_options_change_check(struct team *team); | |
128 | ||
3d249d4c | 129 | struct team_mode { |
3d249d4c JP |
130 | const char *kind; |
131 | struct module *owner; | |
132 | size_t priv_size; | |
5149ee58 | 133 | size_t port_priv_size; |
3d249d4c JP |
134 | const struct team_mode_ops *ops; |
135 | }; | |
136 | ||
137 | #define TEAM_PORT_HASHBITS 4 | |
138 | #define TEAM_PORT_HASHENTRIES (1 << TEAM_PORT_HASHBITS) | |
139 | ||
140 | #define TEAM_MODE_PRIV_LONGS 4 | |
141 | #define TEAM_MODE_PRIV_SIZE (sizeof(long) * TEAM_MODE_PRIV_LONGS) | |
142 | ||
143 | struct team { | |
144 | struct net_device *dev; /* associated netdevice */ | |
145 | struct team_pcpu_stats __percpu *pcpu_stats; | |
146 | ||
61dc3461 | 147 | struct mutex lock; /* used for overall locking, e.g. port lists write */ |
3d249d4c JP |
148 | |
149 | /* | |
19a0b58e | 150 | * List of enabled ports and their count |
3d249d4c | 151 | */ |
19a0b58e JP |
152 | int en_port_count; |
153 | struct hlist_head en_port_hlist[TEAM_PORT_HASHENTRIES]; | |
154 | ||
155 | struct list_head port_list; /* list of all ports */ | |
3d249d4c JP |
156 | |
157 | struct list_head option_list; | |
80f7c668 | 158 | struct list_head option_inst_list; /* list of option instances */ |
3d249d4c JP |
159 | |
160 | const struct team_mode *mode; | |
161 | struct team_mode_ops ops; | |
162 | long mode_priv[TEAM_MODE_PRIV_LONGS]; | |
163 | }; | |
164 | ||
165 | static inline struct hlist_head *team_port_index_hash(struct team *team, | |
166 | int port_index) | |
167 | { | |
19a0b58e | 168 | return &team->en_port_hlist[port_index & (TEAM_PORT_HASHENTRIES - 1)]; |
3d249d4c JP |
169 | } |
170 | ||
171 | static inline struct team_port *team_get_port_by_index(struct team *team, | |
172 | int port_index) | |
173 | { | |
174 | struct hlist_node *p; | |
175 | struct team_port *port; | |
176 | struct hlist_head *head = team_port_index_hash(team, port_index); | |
177 | ||
178 | hlist_for_each_entry(port, p, head, hlist) | |
179 | if (port->index == port_index) | |
180 | return port; | |
181 | return NULL; | |
182 | } | |
183 | static inline struct team_port *team_get_port_by_index_rcu(struct team *team, | |
184 | int port_index) | |
185 | { | |
186 | struct hlist_node *p; | |
187 | struct team_port *port; | |
188 | struct hlist_head *head = team_port_index_hash(team, port_index); | |
189 | ||
190 | hlist_for_each_entry_rcu(port, p, head, hlist) | |
191 | if (port->index == port_index) | |
192 | return port; | |
193 | return NULL; | |
194 | } | |
195 | ||
196 | extern int team_port_set_team_mac(struct team_port *port); | |
358b8382 JP |
197 | extern int team_options_register(struct team *team, |
198 | const struct team_option *option, | |
199 | size_t option_count); | |
3d249d4c | 200 | extern void team_options_unregister(struct team *team, |
358b8382 | 201 | const struct team_option *option, |
3d249d4c | 202 | size_t option_count); |
0402788a JP |
203 | extern int team_mode_register(const struct team_mode *mode); |
204 | extern void team_mode_unregister(const struct team_mode *mode); | |
3d249d4c JP |
205 | |
206 | #endif /* __KERNEL__ */ | |
207 | ||
208 | #define TEAM_STRING_MAX_LEN 32 | |
209 | ||
210 | /********************************** | |
211 | * NETLINK_GENERIC netlink family. | |
212 | **********************************/ | |
213 | ||
214 | enum { | |
215 | TEAM_CMD_NOOP, | |
216 | TEAM_CMD_OPTIONS_SET, | |
217 | TEAM_CMD_OPTIONS_GET, | |
218 | TEAM_CMD_PORT_LIST_GET, | |
219 | ||
220 | __TEAM_CMD_MAX, | |
221 | TEAM_CMD_MAX = (__TEAM_CMD_MAX - 1), | |
222 | }; | |
223 | ||
224 | enum { | |
225 | TEAM_ATTR_UNSPEC, | |
226 | TEAM_ATTR_TEAM_IFINDEX, /* u32 */ | |
227 | TEAM_ATTR_LIST_OPTION, /* nest */ | |
228 | TEAM_ATTR_LIST_PORT, /* nest */ | |
229 | ||
230 | __TEAM_ATTR_MAX, | |
231 | TEAM_ATTR_MAX = __TEAM_ATTR_MAX - 1, | |
232 | }; | |
233 | ||
234 | /* Nested layout of get/set msg: | |
235 | * | |
236 | * [TEAM_ATTR_LIST_OPTION] | |
237 | * [TEAM_ATTR_ITEM_OPTION] | |
238 | * [TEAM_ATTR_OPTION_*], ... | |
239 | * [TEAM_ATTR_ITEM_OPTION] | |
240 | * [TEAM_ATTR_OPTION_*], ... | |
241 | * ... | |
242 | * [TEAM_ATTR_LIST_PORT] | |
243 | * [TEAM_ATTR_ITEM_PORT] | |
244 | * [TEAM_ATTR_PORT_*], ... | |
245 | * [TEAM_ATTR_ITEM_PORT] | |
246 | * [TEAM_ATTR_PORT_*], ... | |
247 | * ... | |
248 | */ | |
249 | ||
250 | enum { | |
251 | TEAM_ATTR_ITEM_OPTION_UNSPEC, | |
252 | TEAM_ATTR_ITEM_OPTION, /* nest */ | |
253 | ||
254 | __TEAM_ATTR_ITEM_OPTION_MAX, | |
255 | TEAM_ATTR_ITEM_OPTION_MAX = __TEAM_ATTR_ITEM_OPTION_MAX - 1, | |
256 | }; | |
257 | ||
258 | enum { | |
259 | TEAM_ATTR_OPTION_UNSPEC, | |
260 | TEAM_ATTR_OPTION_NAME, /* string */ | |
261 | TEAM_ATTR_OPTION_CHANGED, /* flag */ | |
262 | TEAM_ATTR_OPTION_TYPE, /* u8 */ | |
263 | TEAM_ATTR_OPTION_DATA, /* dynamic */ | |
b82b9183 | 264 | TEAM_ATTR_OPTION_REMOVED, /* flag */ |
80f7c668 | 265 | TEAM_ATTR_OPTION_PORT_IFINDEX, /* u32 */ /* for per-port options */ |
b1303326 | 266 | TEAM_ATTR_OPTION_ARRAY_INDEX, /* u32 */ /* for array options */ |
3d249d4c JP |
267 | |
268 | __TEAM_ATTR_OPTION_MAX, | |
269 | TEAM_ATTR_OPTION_MAX = __TEAM_ATTR_OPTION_MAX - 1, | |
270 | }; | |
271 | ||
272 | enum { | |
273 | TEAM_ATTR_ITEM_PORT_UNSPEC, | |
274 | TEAM_ATTR_ITEM_PORT, /* nest */ | |
275 | ||
276 | __TEAM_ATTR_ITEM_PORT_MAX, | |
277 | TEAM_ATTR_ITEM_PORT_MAX = __TEAM_ATTR_ITEM_PORT_MAX - 1, | |
278 | }; | |
279 | ||
280 | enum { | |
281 | TEAM_ATTR_PORT_UNSPEC, | |
282 | TEAM_ATTR_PORT_IFINDEX, /* u32 */ | |
283 | TEAM_ATTR_PORT_CHANGED, /* flag */ | |
284 | TEAM_ATTR_PORT_LINKUP, /* flag */ | |
285 | TEAM_ATTR_PORT_SPEED, /* u32 */ | |
286 | TEAM_ATTR_PORT_DUPLEX, /* u8 */ | |
b82b9183 | 287 | TEAM_ATTR_PORT_REMOVED, /* flag */ |
3d249d4c JP |
288 | |
289 | __TEAM_ATTR_PORT_MAX, | |
290 | TEAM_ATTR_PORT_MAX = __TEAM_ATTR_PORT_MAX - 1, | |
291 | }; | |
292 | ||
293 | /* | |
294 | * NETLINK_GENERIC related info | |
295 | */ | |
296 | #define TEAM_GENL_NAME "team" | |
297 | #define TEAM_GENL_VERSION 0x1 | |
298 | #define TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME "change_event" | |
299 | ||
300 | #endif /* _LINUX_IF_TEAM_H_ */ |