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Commit | Line | Data |
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bc4768eb JV |
1 | /* |
2 | * IP Virtual Server | |
3 | * data structure and functionality definitions | |
4 | */ | |
5 | ||
6 | #ifndef _IP_VS_H | |
7 | #define _IP_VS_H | |
8 | ||
9 | #include <linux/types.h> /* For __beXX types in userland */ | |
10 | ||
11 | #define IP_VS_VERSION_CODE 0x010201 | |
12 | #define NVERSION(version) \ | |
13 | (version >> 16) & 0xFF, \ | |
14 | (version >> 8) & 0xFF, \ | |
15 | version & 0xFF | |
16 | ||
17 | /* | |
18 | * Virtual Service Flags | |
19 | */ | |
20 | #define IP_VS_SVC_F_PERSISTENT 0x0001 /* persistent port */ | |
21 | #define IP_VS_SVC_F_HASHED 0x0002 /* hashed entry */ | |
26ec037f | 22 | #define IP_VS_SVC_F_ONEPACKET 0x0004 /* one-packet scheduling */ |
bc4768eb JV |
23 | |
24 | /* | |
25 | * Destination Server Flags | |
26 | */ | |
27 | #define IP_VS_DEST_F_AVAILABLE 0x0001 /* server is available */ | |
28 | #define IP_VS_DEST_F_OVERLOAD 0x0002 /* server is overloaded */ | |
29 | ||
30 | /* | |
31 | * IPVS sync daemon states | |
32 | */ | |
33 | #define IP_VS_STATE_NONE 0x0000 /* daemon is stopped */ | |
34 | #define IP_VS_STATE_MASTER 0x0001 /* started as master */ | |
35 | #define IP_VS_STATE_BACKUP 0x0002 /* started as backup */ | |
36 | ||
37 | /* | |
38 | * IPVS socket options | |
39 | */ | |
40 | #define IP_VS_BASE_CTL (64+1024+64) /* base */ | |
41 | ||
42 | #define IP_VS_SO_SET_NONE IP_VS_BASE_CTL /* just peek */ | |
43 | #define IP_VS_SO_SET_INSERT (IP_VS_BASE_CTL+1) | |
44 | #define IP_VS_SO_SET_ADD (IP_VS_BASE_CTL+2) | |
45 | #define IP_VS_SO_SET_EDIT (IP_VS_BASE_CTL+3) | |
46 | #define IP_VS_SO_SET_DEL (IP_VS_BASE_CTL+4) | |
47 | #define IP_VS_SO_SET_FLUSH (IP_VS_BASE_CTL+5) | |
48 | #define IP_VS_SO_SET_LIST (IP_VS_BASE_CTL+6) | |
49 | #define IP_VS_SO_SET_ADDDEST (IP_VS_BASE_CTL+7) | |
50 | #define IP_VS_SO_SET_DELDEST (IP_VS_BASE_CTL+8) | |
51 | #define IP_VS_SO_SET_EDITDEST (IP_VS_BASE_CTL+9) | |
52 | #define IP_VS_SO_SET_TIMEOUT (IP_VS_BASE_CTL+10) | |
53 | #define IP_VS_SO_SET_STARTDAEMON (IP_VS_BASE_CTL+11) | |
54 | #define IP_VS_SO_SET_STOPDAEMON (IP_VS_BASE_CTL+12) | |
55 | #define IP_VS_SO_SET_RESTORE (IP_VS_BASE_CTL+13) | |
56 | #define IP_VS_SO_SET_SAVE (IP_VS_BASE_CTL+14) | |
57 | #define IP_VS_SO_SET_ZERO (IP_VS_BASE_CTL+15) | |
58 | #define IP_VS_SO_SET_MAX IP_VS_SO_SET_ZERO | |
59 | ||
60 | #define IP_VS_SO_GET_VERSION IP_VS_BASE_CTL | |
61 | #define IP_VS_SO_GET_INFO (IP_VS_BASE_CTL+1) | |
62 | #define IP_VS_SO_GET_SERVICES (IP_VS_BASE_CTL+2) | |
63 | #define IP_VS_SO_GET_SERVICE (IP_VS_BASE_CTL+3) | |
64 | #define IP_VS_SO_GET_DESTS (IP_VS_BASE_CTL+4) | |
65 | #define IP_VS_SO_GET_DEST (IP_VS_BASE_CTL+5) /* not used now */ | |
66 | #define IP_VS_SO_GET_TIMEOUT (IP_VS_BASE_CTL+6) | |
67 | #define IP_VS_SO_GET_DAEMON (IP_VS_BASE_CTL+7) | |
68 | #define IP_VS_SO_GET_MAX IP_VS_SO_GET_DAEMON | |
69 | ||
70 | ||
71 | /* | |
72 | * IPVS Connection Flags | |
73 | */ | |
74 | #define IP_VS_CONN_F_FWD_MASK 0x0007 /* mask for the fwd methods */ | |
75 | #define IP_VS_CONN_F_MASQ 0x0000 /* masquerading/NAT */ | |
76 | #define IP_VS_CONN_F_LOCALNODE 0x0001 /* local node */ | |
77 | #define IP_VS_CONN_F_TUNNEL 0x0002 /* tunneling */ | |
78 | #define IP_VS_CONN_F_DROUTE 0x0003 /* direct routing */ | |
79 | #define IP_VS_CONN_F_BYPASS 0x0004 /* cache bypass */ | |
80 | #define IP_VS_CONN_F_SYNC 0x0020 /* entry created by sync */ | |
81 | #define IP_VS_CONN_F_HASHED 0x0040 /* hashed entry */ | |
82 | #define IP_VS_CONN_F_NOOUTPUT 0x0080 /* no output packets */ | |
83 | #define IP_VS_CONN_F_INACTIVE 0x0100 /* not established */ | |
84 | #define IP_VS_CONN_F_OUT_SEQ 0x0200 /* must do output seq adjust */ | |
85 | #define IP_VS_CONN_F_IN_SEQ 0x0400 /* must do input seq adjust */ | |
86 | #define IP_VS_CONN_F_SEQ_MASK 0x0600 /* in/out sequence mask */ | |
87 | #define IP_VS_CONN_F_NO_CPORT 0x0800 /* no client port set yet */ | |
88 | #define IP_VS_CONN_F_TEMPLATE 0x1000 /* template, not connection */ | |
26ec037f | 89 | #define IP_VS_CONN_F_ONE_PACKET 0x2000 /* forward only one packet */ |
bc4768eb JV |
90 | |
91 | #define IP_VS_SCHEDNAME_MAXLEN 16 | |
92 | #define IP_VS_IFNAME_MAXLEN 16 | |
93 | ||
94 | ||
95 | /* | |
96 | * The struct ip_vs_service_user and struct ip_vs_dest_user are | |
97 | * used to set IPVS rules through setsockopt. | |
98 | */ | |
99 | struct ip_vs_service_user { | |
100 | /* virtual service addresses */ | |
9adfbfb6 | 101 | __u16 protocol; |
bc4768eb JV |
102 | __be32 addr; /* virtual ip address */ |
103 | __be16 port; | |
9adfbfb6 | 104 | __u32 fwmark; /* firwall mark of service */ |
bc4768eb JV |
105 | |
106 | /* virtual service options */ | |
107 | char sched_name[IP_VS_SCHEDNAME_MAXLEN]; | |
108 | unsigned flags; /* virtual service flags */ | |
109 | unsigned timeout; /* persistent timeout in sec */ | |
110 | __be32 netmask; /* persistent netmask */ | |
111 | }; | |
112 | ||
113 | ||
114 | struct ip_vs_dest_user { | |
115 | /* destination server address */ | |
116 | __be32 addr; | |
117 | __be16 port; | |
118 | ||
119 | /* real server options */ | |
120 | unsigned conn_flags; /* connection flags */ | |
121 | int weight; /* destination weight */ | |
122 | ||
123 | /* thresholds for active connections */ | |
9adfbfb6 AB |
124 | __u32 u_threshold; /* upper threshold */ |
125 | __u32 l_threshold; /* lower threshold */ | |
bc4768eb JV |
126 | }; |
127 | ||
128 | ||
129 | /* | |
130 | * IPVS statistics object (for user space) | |
131 | */ | |
d94d9fee | 132 | struct ip_vs_stats_user { |
bc4768eb JV |
133 | __u32 conns; /* connections scheduled */ |
134 | __u32 inpkts; /* incoming packets */ | |
135 | __u32 outpkts; /* outgoing packets */ | |
136 | __u64 inbytes; /* incoming bytes */ | |
137 | __u64 outbytes; /* outgoing bytes */ | |
138 | ||
139 | __u32 cps; /* current connection rate */ | |
140 | __u32 inpps; /* current in packet rate */ | |
141 | __u32 outpps; /* current out packet rate */ | |
142 | __u32 inbps; /* current in byte rate */ | |
143 | __u32 outbps; /* current out byte rate */ | |
144 | }; | |
145 | ||
146 | ||
147 | /* The argument to IP_VS_SO_GET_INFO */ | |
148 | struct ip_vs_getinfo { | |
149 | /* version number */ | |
150 | unsigned int version; | |
151 | ||
152 | /* size of connection hash table */ | |
153 | unsigned int size; | |
154 | ||
155 | /* number of virtual services */ | |
156 | unsigned int num_services; | |
157 | }; | |
158 | ||
159 | ||
160 | /* The argument to IP_VS_SO_GET_SERVICE */ | |
161 | struct ip_vs_service_entry { | |
162 | /* which service: user fills in these */ | |
9adfbfb6 | 163 | __u16 protocol; |
bc4768eb JV |
164 | __be32 addr; /* virtual address */ |
165 | __be16 port; | |
9adfbfb6 | 166 | __u32 fwmark; /* firwall mark of service */ |
bc4768eb JV |
167 | |
168 | /* service options */ | |
169 | char sched_name[IP_VS_SCHEDNAME_MAXLEN]; | |
170 | unsigned flags; /* virtual service flags */ | |
171 | unsigned timeout; /* persistent timeout */ | |
172 | __be32 netmask; /* persistent netmask */ | |
173 | ||
174 | /* number of real servers */ | |
175 | unsigned int num_dests; | |
176 | ||
177 | /* statistics */ | |
178 | struct ip_vs_stats_user stats; | |
179 | }; | |
180 | ||
181 | ||
182 | struct ip_vs_dest_entry { | |
183 | __be32 addr; /* destination address */ | |
184 | __be16 port; | |
185 | unsigned conn_flags; /* connection flags */ | |
186 | int weight; /* destination weight */ | |
187 | ||
9adfbfb6 AB |
188 | __u32 u_threshold; /* upper threshold */ |
189 | __u32 l_threshold; /* lower threshold */ | |
bc4768eb | 190 | |
9adfbfb6 AB |
191 | __u32 activeconns; /* active connections */ |
192 | __u32 inactconns; /* inactive connections */ | |
193 | __u32 persistconns; /* persistent connections */ | |
bc4768eb JV |
194 | |
195 | /* statistics */ | |
196 | struct ip_vs_stats_user stats; | |
197 | }; | |
198 | ||
199 | ||
200 | /* The argument to IP_VS_SO_GET_DESTS */ | |
201 | struct ip_vs_get_dests { | |
202 | /* which service: user fills in these */ | |
9adfbfb6 | 203 | __u16 protocol; |
bc4768eb JV |
204 | __be32 addr; /* virtual address */ |
205 | __be16 port; | |
9adfbfb6 | 206 | __u32 fwmark; /* firwall mark of service */ |
bc4768eb JV |
207 | |
208 | /* number of real servers */ | |
209 | unsigned int num_dests; | |
210 | ||
211 | /* the real servers */ | |
212 | struct ip_vs_dest_entry entrytable[0]; | |
213 | }; | |
214 | ||
215 | ||
216 | /* The argument to IP_VS_SO_GET_SERVICES */ | |
217 | struct ip_vs_get_services { | |
218 | /* number of virtual services */ | |
219 | unsigned int num_services; | |
220 | ||
221 | /* service table */ | |
222 | struct ip_vs_service_entry entrytable[0]; | |
223 | }; | |
224 | ||
225 | ||
226 | /* The argument to IP_VS_SO_GET_TIMEOUT */ | |
227 | struct ip_vs_timeout_user { | |
228 | int tcp_timeout; | |
229 | int tcp_fin_timeout; | |
230 | int udp_timeout; | |
231 | }; | |
232 | ||
233 | ||
234 | /* The argument to IP_VS_SO_GET_DAEMON */ | |
235 | struct ip_vs_daemon_user { | |
236 | /* sync daemon state (master/backup) */ | |
237 | int state; | |
238 | ||
239 | /* multicast interface name */ | |
240 | char mcast_ifn[IP_VS_IFNAME_MAXLEN]; | |
241 | ||
242 | /* SyncID we belong to */ | |
243 | int syncid; | |
244 | }; | |
245 | ||
c1bc667e JV |
246 | /* |
247 | * | |
248 | * IPVS Generic Netlink interface definitions | |
249 | * | |
250 | */ | |
251 | ||
252 | /* Generic Netlink family info */ | |
253 | ||
254 | #define IPVS_GENL_NAME "IPVS" | |
255 | #define IPVS_GENL_VERSION 0x1 | |
256 | ||
257 | struct ip_vs_flags { | |
258 | __be32 flags; | |
259 | __be32 mask; | |
260 | }; | |
261 | ||
262 | /* Generic Netlink command attributes */ | |
263 | enum { | |
264 | IPVS_CMD_UNSPEC = 0, | |
265 | ||
266 | IPVS_CMD_NEW_SERVICE, /* add service */ | |
267 | IPVS_CMD_SET_SERVICE, /* modify service */ | |
268 | IPVS_CMD_DEL_SERVICE, /* delete service */ | |
269 | IPVS_CMD_GET_SERVICE, /* get service info */ | |
270 | ||
271 | IPVS_CMD_NEW_DEST, /* add destination */ | |
272 | IPVS_CMD_SET_DEST, /* modify destination */ | |
273 | IPVS_CMD_DEL_DEST, /* delete destination */ | |
274 | IPVS_CMD_GET_DEST, /* get destination info */ | |
275 | ||
276 | IPVS_CMD_NEW_DAEMON, /* start sync daemon */ | |
277 | IPVS_CMD_DEL_DAEMON, /* stop sync daemon */ | |
278 | IPVS_CMD_GET_DAEMON, /* get sync daemon status */ | |
279 | ||
280 | IPVS_CMD_SET_CONFIG, /* set config settings */ | |
281 | IPVS_CMD_GET_CONFIG, /* get config settings */ | |
282 | ||
283 | IPVS_CMD_SET_INFO, /* only used in GET_INFO reply */ | |
284 | IPVS_CMD_GET_INFO, /* get general IPVS info */ | |
285 | ||
286 | IPVS_CMD_ZERO, /* zero all counters and stats */ | |
287 | IPVS_CMD_FLUSH, /* flush services and dests */ | |
288 | ||
289 | __IPVS_CMD_MAX, | |
290 | }; | |
291 | ||
292 | #define IPVS_CMD_MAX (__IPVS_CMD_MAX - 1) | |
293 | ||
294 | /* Attributes used in the first level of commands */ | |
295 | enum { | |
296 | IPVS_CMD_ATTR_UNSPEC = 0, | |
297 | IPVS_CMD_ATTR_SERVICE, /* nested service attribute */ | |
298 | IPVS_CMD_ATTR_DEST, /* nested destination attribute */ | |
299 | IPVS_CMD_ATTR_DAEMON, /* nested sync daemon attribute */ | |
300 | IPVS_CMD_ATTR_TIMEOUT_TCP, /* TCP connection timeout */ | |
301 | IPVS_CMD_ATTR_TIMEOUT_TCP_FIN, /* TCP FIN wait timeout */ | |
302 | IPVS_CMD_ATTR_TIMEOUT_UDP, /* UDP timeout */ | |
303 | __IPVS_CMD_ATTR_MAX, | |
304 | }; | |
305 | ||
306 | #define IPVS_CMD_ATTR_MAX (__IPVS_SVC_ATTR_MAX - 1) | |
307 | ||
308 | /* | |
309 | * Attributes used to describe a service | |
310 | * | |
311 | * Used inside nested attribute IPVS_CMD_ATTR_SERVICE | |
312 | */ | |
313 | enum { | |
314 | IPVS_SVC_ATTR_UNSPEC = 0, | |
315 | IPVS_SVC_ATTR_AF, /* address family */ | |
316 | IPVS_SVC_ATTR_PROTOCOL, /* virtual service protocol */ | |
317 | IPVS_SVC_ATTR_ADDR, /* virtual service address */ | |
318 | IPVS_SVC_ATTR_PORT, /* virtual service port */ | |
319 | IPVS_SVC_ATTR_FWMARK, /* firewall mark of service */ | |
320 | ||
321 | IPVS_SVC_ATTR_SCHED_NAME, /* name of scheduler */ | |
322 | IPVS_SVC_ATTR_FLAGS, /* virtual service flags */ | |
323 | IPVS_SVC_ATTR_TIMEOUT, /* persistent timeout */ | |
324 | IPVS_SVC_ATTR_NETMASK, /* persistent netmask */ | |
325 | ||
326 | IPVS_SVC_ATTR_STATS, /* nested attribute for service stats */ | |
327 | __IPVS_SVC_ATTR_MAX, | |
328 | }; | |
329 | ||
330 | #define IPVS_SVC_ATTR_MAX (__IPVS_SVC_ATTR_MAX - 1) | |
331 | ||
332 | /* | |
333 | * Attributes used to describe a destination (real server) | |
334 | * | |
335 | * Used inside nested attribute IPVS_CMD_ATTR_DEST | |
336 | */ | |
337 | enum { | |
338 | IPVS_DEST_ATTR_UNSPEC = 0, | |
339 | IPVS_DEST_ATTR_ADDR, /* real server address */ | |
340 | IPVS_DEST_ATTR_PORT, /* real server port */ | |
341 | ||
342 | IPVS_DEST_ATTR_FWD_METHOD, /* forwarding method */ | |
343 | IPVS_DEST_ATTR_WEIGHT, /* destination weight */ | |
344 | ||
345 | IPVS_DEST_ATTR_U_THRESH, /* upper threshold */ | |
346 | IPVS_DEST_ATTR_L_THRESH, /* lower threshold */ | |
347 | ||
348 | IPVS_DEST_ATTR_ACTIVE_CONNS, /* active connections */ | |
349 | IPVS_DEST_ATTR_INACT_CONNS, /* inactive connections */ | |
350 | IPVS_DEST_ATTR_PERSIST_CONNS, /* persistent connections */ | |
351 | ||
352 | IPVS_DEST_ATTR_STATS, /* nested attribute for dest stats */ | |
353 | __IPVS_DEST_ATTR_MAX, | |
354 | }; | |
355 | ||
356 | #define IPVS_DEST_ATTR_MAX (__IPVS_DEST_ATTR_MAX - 1) | |
357 | ||
358 | /* | |
359 | * Attributes describing a sync daemon | |
360 | * | |
361 | * Used inside nested attribute IPVS_CMD_ATTR_DAEMON | |
362 | */ | |
363 | enum { | |
364 | IPVS_DAEMON_ATTR_UNSPEC = 0, | |
365 | IPVS_DAEMON_ATTR_STATE, /* sync daemon state (master/backup) */ | |
366 | IPVS_DAEMON_ATTR_MCAST_IFN, /* multicast interface name */ | |
367 | IPVS_DAEMON_ATTR_SYNC_ID, /* SyncID we belong to */ | |
368 | __IPVS_DAEMON_ATTR_MAX, | |
369 | }; | |
370 | ||
371 | #define IPVS_DAEMON_ATTR_MAX (__IPVS_DAEMON_ATTR_MAX - 1) | |
372 | ||
373 | /* | |
374 | * Attributes used to describe service or destination entry statistics | |
375 | * | |
376 | * Used inside nested attributes IPVS_SVC_ATTR_STATS and IPVS_DEST_ATTR_STATS | |
377 | */ | |
378 | enum { | |
379 | IPVS_STATS_ATTR_UNSPEC = 0, | |
380 | IPVS_STATS_ATTR_CONNS, /* connections scheduled */ | |
381 | IPVS_STATS_ATTR_INPKTS, /* incoming packets */ | |
382 | IPVS_STATS_ATTR_OUTPKTS, /* outgoing packets */ | |
383 | IPVS_STATS_ATTR_INBYTES, /* incoming bytes */ | |
384 | IPVS_STATS_ATTR_OUTBYTES, /* outgoing bytes */ | |
385 | ||
386 | IPVS_STATS_ATTR_CPS, /* current connection rate */ | |
387 | IPVS_STATS_ATTR_INPPS, /* current in packet rate */ | |
388 | IPVS_STATS_ATTR_OUTPPS, /* current out packet rate */ | |
389 | IPVS_STATS_ATTR_INBPS, /* current in byte rate */ | |
390 | IPVS_STATS_ATTR_OUTBPS, /* current out byte rate */ | |
391 | __IPVS_STATS_ATTR_MAX, | |
392 | }; | |
393 | ||
394 | #define IPVS_STATS_ATTR_MAX (__IPVS_STATS_ATTR_MAX - 1) | |
395 | ||
396 | /* Attributes used in response to IPVS_CMD_GET_INFO command */ | |
397 | enum { | |
398 | IPVS_INFO_ATTR_UNSPEC = 0, | |
399 | IPVS_INFO_ATTR_VERSION, /* IPVS version number */ | |
400 | IPVS_INFO_ATTR_CONN_TAB_SIZE, /* size of connection hash table */ | |
401 | __IPVS_INFO_ATTR_MAX, | |
402 | }; | |
403 | ||
404 | #define IPVS_INFO_ATTR_MAX (__IPVS_INFO_ATTR_MAX - 1) | |
405 | ||
bc4768eb | 406 | #endif /* _IP_VS_H */ |