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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 | */ | |
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; | |
31 | struct hlist_node hlist; /* node in hash list */ | |
32 | struct list_head list; /* node in ordinary list */ | |
33 | struct team *team; | |
34 | int index; | |
35 | ||
36 | /* | |
37 | * A place for storing original values of the device before it | |
38 | * become a port. | |
39 | */ | |
40 | struct { | |
41 | unsigned char dev_addr[MAX_ADDR_LEN]; | |
42 | unsigned int mtu; | |
43 | } orig; | |
44 | ||
45 | bool linkup; | |
46 | u32 speed; | |
47 | u8 duplex; | |
48 | ||
49 | struct rcu_head rcu; | |
50 | }; | |
51 | ||
52 | struct team_mode_ops { | |
53 | int (*init)(struct team *team); | |
54 | void (*exit)(struct team *team); | |
55 | rx_handler_result_t (*receive)(struct team *team, | |
56 | struct team_port *port, | |
57 | struct sk_buff *skb); | |
58 | bool (*transmit)(struct team *team, struct sk_buff *skb); | |
59 | int (*port_enter)(struct team *team, struct team_port *port); | |
60 | void (*port_leave)(struct team *team, struct team_port *port); | |
61 | void (*port_change_mac)(struct team *team, struct team_port *port); | |
62 | }; | |
63 | ||
64 | enum team_option_type { | |
65 | TEAM_OPTION_TYPE_U32, | |
66 | TEAM_OPTION_TYPE_STRING, | |
67 | }; | |
68 | ||
69 | struct team_option { | |
70 | struct list_head list; | |
71 | const char *name; | |
72 | enum team_option_type type; | |
73 | int (*getter)(struct team *team, void *arg); | |
74 | int (*setter)(struct team *team, void *arg); | |
75 | }; | |
76 | ||
77 | struct team_mode { | |
78 | struct list_head list; | |
79 | const char *kind; | |
80 | struct module *owner; | |
81 | size_t priv_size; | |
82 | const struct team_mode_ops *ops; | |
83 | }; | |
84 | ||
85 | #define TEAM_PORT_HASHBITS 4 | |
86 | #define TEAM_PORT_HASHENTRIES (1 << TEAM_PORT_HASHBITS) | |
87 | ||
88 | #define TEAM_MODE_PRIV_LONGS 4 | |
89 | #define TEAM_MODE_PRIV_SIZE (sizeof(long) * TEAM_MODE_PRIV_LONGS) | |
90 | ||
91 | struct team { | |
92 | struct net_device *dev; /* associated netdevice */ | |
93 | struct team_pcpu_stats __percpu *pcpu_stats; | |
94 | ||
61dc3461 | 95 | struct mutex lock; /* used for overall locking, e.g. port lists write */ |
3d249d4c JP |
96 | |
97 | /* | |
98 | * port lists with port count | |
99 | */ | |
100 | int port_count; | |
101 | struct hlist_head port_hlist[TEAM_PORT_HASHENTRIES]; | |
102 | struct list_head port_list; | |
103 | ||
104 | struct list_head option_list; | |
105 | ||
106 | const struct team_mode *mode; | |
107 | struct team_mode_ops ops; | |
108 | long mode_priv[TEAM_MODE_PRIV_LONGS]; | |
109 | }; | |
110 | ||
111 | static inline struct hlist_head *team_port_index_hash(struct team *team, | |
112 | int port_index) | |
113 | { | |
114 | return &team->port_hlist[port_index & (TEAM_PORT_HASHENTRIES - 1)]; | |
115 | } | |
116 | ||
117 | static inline struct team_port *team_get_port_by_index(struct team *team, | |
118 | int port_index) | |
119 | { | |
120 | struct hlist_node *p; | |
121 | struct team_port *port; | |
122 | struct hlist_head *head = team_port_index_hash(team, port_index); | |
123 | ||
124 | hlist_for_each_entry(port, p, head, hlist) | |
125 | if (port->index == port_index) | |
126 | return port; | |
127 | return NULL; | |
128 | } | |
129 | static inline struct team_port *team_get_port_by_index_rcu(struct team *team, | |
130 | int port_index) | |
131 | { | |
132 | struct hlist_node *p; | |
133 | struct team_port *port; | |
134 | struct hlist_head *head = team_port_index_hash(team, port_index); | |
135 | ||
136 | hlist_for_each_entry_rcu(port, p, head, hlist) | |
137 | if (port->index == port_index) | |
138 | return port; | |
139 | return NULL; | |
140 | } | |
141 | ||
142 | extern int team_port_set_team_mac(struct team_port *port); | |
143 | extern void team_options_register(struct team *team, | |
144 | struct team_option *option, | |
145 | size_t option_count); | |
146 | extern void team_options_unregister(struct team *team, | |
147 | struct team_option *option, | |
148 | size_t option_count); | |
149 | extern int team_mode_register(struct team_mode *mode); | |
150 | extern int team_mode_unregister(struct team_mode *mode); | |
151 | ||
152 | #endif /* __KERNEL__ */ | |
153 | ||
154 | #define TEAM_STRING_MAX_LEN 32 | |
155 | ||
156 | /********************************** | |
157 | * NETLINK_GENERIC netlink family. | |
158 | **********************************/ | |
159 | ||
160 | enum { | |
161 | TEAM_CMD_NOOP, | |
162 | TEAM_CMD_OPTIONS_SET, | |
163 | TEAM_CMD_OPTIONS_GET, | |
164 | TEAM_CMD_PORT_LIST_GET, | |
165 | ||
166 | __TEAM_CMD_MAX, | |
167 | TEAM_CMD_MAX = (__TEAM_CMD_MAX - 1), | |
168 | }; | |
169 | ||
170 | enum { | |
171 | TEAM_ATTR_UNSPEC, | |
172 | TEAM_ATTR_TEAM_IFINDEX, /* u32 */ | |
173 | TEAM_ATTR_LIST_OPTION, /* nest */ | |
174 | TEAM_ATTR_LIST_PORT, /* nest */ | |
175 | ||
176 | __TEAM_ATTR_MAX, | |
177 | TEAM_ATTR_MAX = __TEAM_ATTR_MAX - 1, | |
178 | }; | |
179 | ||
180 | /* Nested layout of get/set msg: | |
181 | * | |
182 | * [TEAM_ATTR_LIST_OPTION] | |
183 | * [TEAM_ATTR_ITEM_OPTION] | |
184 | * [TEAM_ATTR_OPTION_*], ... | |
185 | * [TEAM_ATTR_ITEM_OPTION] | |
186 | * [TEAM_ATTR_OPTION_*], ... | |
187 | * ... | |
188 | * [TEAM_ATTR_LIST_PORT] | |
189 | * [TEAM_ATTR_ITEM_PORT] | |
190 | * [TEAM_ATTR_PORT_*], ... | |
191 | * [TEAM_ATTR_ITEM_PORT] | |
192 | * [TEAM_ATTR_PORT_*], ... | |
193 | * ... | |
194 | */ | |
195 | ||
196 | enum { | |
197 | TEAM_ATTR_ITEM_OPTION_UNSPEC, | |
198 | TEAM_ATTR_ITEM_OPTION, /* nest */ | |
199 | ||
200 | __TEAM_ATTR_ITEM_OPTION_MAX, | |
201 | TEAM_ATTR_ITEM_OPTION_MAX = __TEAM_ATTR_ITEM_OPTION_MAX - 1, | |
202 | }; | |
203 | ||
204 | enum { | |
205 | TEAM_ATTR_OPTION_UNSPEC, | |
206 | TEAM_ATTR_OPTION_NAME, /* string */ | |
207 | TEAM_ATTR_OPTION_CHANGED, /* flag */ | |
208 | TEAM_ATTR_OPTION_TYPE, /* u8 */ | |
209 | TEAM_ATTR_OPTION_DATA, /* dynamic */ | |
210 | ||
211 | __TEAM_ATTR_OPTION_MAX, | |
212 | TEAM_ATTR_OPTION_MAX = __TEAM_ATTR_OPTION_MAX - 1, | |
213 | }; | |
214 | ||
215 | enum { | |
216 | TEAM_ATTR_ITEM_PORT_UNSPEC, | |
217 | TEAM_ATTR_ITEM_PORT, /* nest */ | |
218 | ||
219 | __TEAM_ATTR_ITEM_PORT_MAX, | |
220 | TEAM_ATTR_ITEM_PORT_MAX = __TEAM_ATTR_ITEM_PORT_MAX - 1, | |
221 | }; | |
222 | ||
223 | enum { | |
224 | TEAM_ATTR_PORT_UNSPEC, | |
225 | TEAM_ATTR_PORT_IFINDEX, /* u32 */ | |
226 | TEAM_ATTR_PORT_CHANGED, /* flag */ | |
227 | TEAM_ATTR_PORT_LINKUP, /* flag */ | |
228 | TEAM_ATTR_PORT_SPEED, /* u32 */ | |
229 | TEAM_ATTR_PORT_DUPLEX, /* u8 */ | |
230 | ||
231 | __TEAM_ATTR_PORT_MAX, | |
232 | TEAM_ATTR_PORT_MAX = __TEAM_ATTR_PORT_MAX - 1, | |
233 | }; | |
234 | ||
235 | /* | |
236 | * NETLINK_GENERIC related info | |
237 | */ | |
238 | #define TEAM_GENL_NAME "team" | |
239 | #define TEAM_GENL_VERSION 0x1 | |
240 | #define TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME "change_event" | |
241 | ||
242 | #endif /* _LINUX_IF_TEAM_H_ */ |