Root/
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 */ |
22 | #define IP_VS_SVC_F_ONEPACKET 0x0004 /* one-packet scheduling */ |
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 | * Only flags 0..15 are sent to backup server |
74 | */ |
75 | #define IP_VS_CONN_F_FWD_MASK 0x0007 /* mask for the fwd methods */ |
76 | #define IP_VS_CONN_F_MASQ 0x0000 /* masquerading/NAT */ |
77 | #define IP_VS_CONN_F_LOCALNODE 0x0001 /* local node */ |
78 | #define IP_VS_CONN_F_TUNNEL 0x0002 /* tunneling */ |
79 | #define IP_VS_CONN_F_DROUTE 0x0003 /* direct routing */ |
80 | #define IP_VS_CONN_F_BYPASS 0x0004 /* cache bypass */ |
81 | #define IP_VS_CONN_F_SYNC 0x0020 /* entry created by sync */ |
82 | #define IP_VS_CONN_F_HASHED 0x0040 /* hashed entry */ |
83 | #define IP_VS_CONN_F_NOOUTPUT 0x0080 /* no output packets */ |
84 | #define IP_VS_CONN_F_INACTIVE 0x0100 /* not established */ |
85 | #define IP_VS_CONN_F_OUT_SEQ 0x0200 /* must do output seq adjust */ |
86 | #define IP_VS_CONN_F_IN_SEQ 0x0400 /* must do input seq adjust */ |
87 | #define IP_VS_CONN_F_SEQ_MASK 0x0600 /* in/out sequence mask */ |
88 | #define IP_VS_CONN_F_NO_CPORT 0x0800 /* no client port set yet */ |
89 | #define IP_VS_CONN_F_TEMPLATE 0x1000 /* template, not connection */ |
90 | #define IP_VS_CONN_F_ONE_PACKET 0x2000 /* forward only one packet */ |
91 | |
92 | #define IP_VS_CONN_F_BACKUP_MASK (IP_VS_CONN_F_FWD_MASK | \ |
93 | IP_VS_CONN_F_NOOUTPUT | \ |
94 | IP_VS_CONN_F_INACTIVE | \ |
95 | IP_VS_CONN_F_SEQ_MASK | \ |
96 | IP_VS_CONN_F_NO_CPORT | \ |
97 | IP_VS_CONN_F_TEMPLATE \ |
98 | ) |
99 | |
100 | /* Flags that are not sent to backup server start from bit 16 */ |
101 | #define IP_VS_CONN_F_NFCT (1 << 16) /* use netfilter conntrack */ |
102 | |
103 | /* Connection flags from destination that can be changed by user space */ |
104 | #define IP_VS_CONN_F_DEST_MASK (IP_VS_CONN_F_FWD_MASK | \ |
105 | IP_VS_CONN_F_ONE_PACKET | \ |
106 | IP_VS_CONN_F_NFCT | \ |
107 | 0) |
108 | |
109 | #define IP_VS_SCHEDNAME_MAXLEN 16 |
110 | #define IP_VS_PENAME_MAXLEN 16 |
111 | #define IP_VS_IFNAME_MAXLEN 16 |
112 | |
113 | #define IP_VS_PEDATA_MAXLEN 255 |
114 | |
115 | /* |
116 | * The struct ip_vs_service_user and struct ip_vs_dest_user are |
117 | * used to set IPVS rules through setsockopt. |
118 | */ |
119 | struct ip_vs_service_user { |
120 | /* virtual service addresses */ |
121 | __u16 protocol; |
122 | __be32 addr; /* virtual ip address */ |
123 | __be16 port; |
124 | __u32 fwmark; /* firwall mark of service */ |
125 | |
126 | /* virtual service options */ |
127 | char sched_name[IP_VS_SCHEDNAME_MAXLEN]; |
128 | unsigned flags; /* virtual service flags */ |
129 | unsigned timeout; /* persistent timeout in sec */ |
130 | __be32 netmask; /* persistent netmask */ |
131 | }; |
132 | |
133 | |
134 | struct ip_vs_dest_user { |
135 | /* destination server address */ |
136 | __be32 addr; |
137 | __be16 port; |
138 | |
139 | /* real server options */ |
140 | unsigned conn_flags; /* connection flags */ |
141 | int weight; /* destination weight */ |
142 | |
143 | /* thresholds for active connections */ |
144 | __u32 u_threshold; /* upper threshold */ |
145 | __u32 l_threshold; /* lower threshold */ |
146 | }; |
147 | |
148 | |
149 | /* |
150 | * IPVS statistics object (for user space) |
151 | */ |
152 | struct ip_vs_stats_user { |
153 | __u32 conns; /* connections scheduled */ |
154 | __u32 inpkts; /* incoming packets */ |
155 | __u32 outpkts; /* outgoing packets */ |
156 | __u64 inbytes; /* incoming bytes */ |
157 | __u64 outbytes; /* outgoing bytes */ |
158 | |
159 | __u32 cps; /* current connection rate */ |
160 | __u32 inpps; /* current in packet rate */ |
161 | __u32 outpps; /* current out packet rate */ |
162 | __u32 inbps; /* current in byte rate */ |
163 | __u32 outbps; /* current out byte rate */ |
164 | }; |
165 | |
166 | |
167 | /* The argument to IP_VS_SO_GET_INFO */ |
168 | struct ip_vs_getinfo { |
169 | /* version number */ |
170 | unsigned int version; |
171 | |
172 | /* size of connection hash table */ |
173 | unsigned int size; |
174 | |
175 | /* number of virtual services */ |
176 | unsigned int num_services; |
177 | }; |
178 | |
179 | |
180 | /* The argument to IP_VS_SO_GET_SERVICE */ |
181 | struct ip_vs_service_entry { |
182 | /* which service: user fills in these */ |
183 | __u16 protocol; |
184 | __be32 addr; /* virtual address */ |
185 | __be16 port; |
186 | __u32 fwmark; /* firwall mark of service */ |
187 | |
188 | /* service options */ |
189 | char sched_name[IP_VS_SCHEDNAME_MAXLEN]; |
190 | unsigned flags; /* virtual service flags */ |
191 | unsigned timeout; /* persistent timeout */ |
192 | __be32 netmask; /* persistent netmask */ |
193 | |
194 | /* number of real servers */ |
195 | unsigned int num_dests; |
196 | |
197 | /* statistics */ |
198 | struct ip_vs_stats_user stats; |
199 | }; |
200 | |
201 | |
202 | struct ip_vs_dest_entry { |
203 | __be32 addr; /* destination address */ |
204 | __be16 port; |
205 | unsigned conn_flags; /* connection flags */ |
206 | int weight; /* destination weight */ |
207 | |
208 | __u32 u_threshold; /* upper threshold */ |
209 | __u32 l_threshold; /* lower threshold */ |
210 | |
211 | __u32 activeconns; /* active connections */ |
212 | __u32 inactconns; /* inactive connections */ |
213 | __u32 persistconns; /* persistent connections */ |
214 | |
215 | /* statistics */ |
216 | struct ip_vs_stats_user stats; |
217 | }; |
218 | |
219 | |
220 | /* The argument to IP_VS_SO_GET_DESTS */ |
221 | struct ip_vs_get_dests { |
222 | /* which service: user fills in these */ |
223 | __u16 protocol; |
224 | __be32 addr; /* virtual address */ |
225 | __be16 port; |
226 | __u32 fwmark; /* firwall mark of service */ |
227 | |
228 | /* number of real servers */ |
229 | unsigned int num_dests; |
230 | |
231 | /* the real servers */ |
232 | struct ip_vs_dest_entry entrytable[0]; |
233 | }; |
234 | |
235 | |
236 | /* The argument to IP_VS_SO_GET_SERVICES */ |
237 | struct ip_vs_get_services { |
238 | /* number of virtual services */ |
239 | unsigned int num_services; |
240 | |
241 | /* service table */ |
242 | struct ip_vs_service_entry entrytable[0]; |
243 | }; |
244 | |
245 | |
246 | /* The argument to IP_VS_SO_GET_TIMEOUT */ |
247 | struct ip_vs_timeout_user { |
248 | int tcp_timeout; |
249 | int tcp_fin_timeout; |
250 | int udp_timeout; |
251 | }; |
252 | |
253 | |
254 | /* The argument to IP_VS_SO_GET_DAEMON */ |
255 | struct ip_vs_daemon_user { |
256 | /* sync daemon state (master/backup) */ |
257 | int state; |
258 | |
259 | /* multicast interface name */ |
260 | char mcast_ifn[IP_VS_IFNAME_MAXLEN]; |
261 | |
262 | /* SyncID we belong to */ |
263 | int syncid; |
264 | }; |
265 | |
266 | /* |
267 | * |
268 | * IPVS Generic Netlink interface definitions |
269 | * |
270 | */ |
271 | |
272 | /* Generic Netlink family info */ |
273 | |
274 | #define IPVS_GENL_NAME "IPVS" |
275 | #define IPVS_GENL_VERSION 0x1 |
276 | |
277 | struct ip_vs_flags { |
278 | __be32 flags; |
279 | __be32 mask; |
280 | }; |
281 | |
282 | /* Generic Netlink command attributes */ |
283 | enum { |
284 | IPVS_CMD_UNSPEC = 0, |
285 | |
286 | IPVS_CMD_NEW_SERVICE, /* add service */ |
287 | IPVS_CMD_SET_SERVICE, /* modify service */ |
288 | IPVS_CMD_DEL_SERVICE, /* delete service */ |
289 | IPVS_CMD_GET_SERVICE, /* get service info */ |
290 | |
291 | IPVS_CMD_NEW_DEST, /* add destination */ |
292 | IPVS_CMD_SET_DEST, /* modify destination */ |
293 | IPVS_CMD_DEL_DEST, /* delete destination */ |
294 | IPVS_CMD_GET_DEST, /* get destination info */ |
295 | |
296 | IPVS_CMD_NEW_DAEMON, /* start sync daemon */ |
297 | IPVS_CMD_DEL_DAEMON, /* stop sync daemon */ |
298 | IPVS_CMD_GET_DAEMON, /* get sync daemon status */ |
299 | |
300 | IPVS_CMD_SET_CONFIG, /* set config settings */ |
301 | IPVS_CMD_GET_CONFIG, /* get config settings */ |
302 | |
303 | IPVS_CMD_SET_INFO, /* only used in GET_INFO reply */ |
304 | IPVS_CMD_GET_INFO, /* get general IPVS info */ |
305 | |
306 | IPVS_CMD_ZERO, /* zero all counters and stats */ |
307 | IPVS_CMD_FLUSH, /* flush services and dests */ |
308 | |
309 | __IPVS_CMD_MAX, |
310 | }; |
311 | |
312 | #define IPVS_CMD_MAX (__IPVS_CMD_MAX - 1) |
313 | |
314 | /* Attributes used in the first level of commands */ |
315 | enum { |
316 | IPVS_CMD_ATTR_UNSPEC = 0, |
317 | IPVS_CMD_ATTR_SERVICE, /* nested service attribute */ |
318 | IPVS_CMD_ATTR_DEST, /* nested destination attribute */ |
319 | IPVS_CMD_ATTR_DAEMON, /* nested sync daemon attribute */ |
320 | IPVS_CMD_ATTR_TIMEOUT_TCP, /* TCP connection timeout */ |
321 | IPVS_CMD_ATTR_TIMEOUT_TCP_FIN, /* TCP FIN wait timeout */ |
322 | IPVS_CMD_ATTR_TIMEOUT_UDP, /* UDP timeout */ |
323 | __IPVS_CMD_ATTR_MAX, |
324 | }; |
325 | |
326 | #define IPVS_CMD_ATTR_MAX (__IPVS_SVC_ATTR_MAX - 1) |
327 | |
328 | /* |
329 | * Attributes used to describe a service |
330 | * |
331 | * Used inside nested attribute IPVS_CMD_ATTR_SERVICE |
332 | */ |
333 | enum { |
334 | IPVS_SVC_ATTR_UNSPEC = 0, |
335 | IPVS_SVC_ATTR_AF, /* address family */ |
336 | IPVS_SVC_ATTR_PROTOCOL, /* virtual service protocol */ |
337 | IPVS_SVC_ATTR_ADDR, /* virtual service address */ |
338 | IPVS_SVC_ATTR_PORT, /* virtual service port */ |
339 | IPVS_SVC_ATTR_FWMARK, /* firewall mark of service */ |
340 | |
341 | IPVS_SVC_ATTR_SCHED_NAME, /* name of scheduler */ |
342 | IPVS_SVC_ATTR_FLAGS, /* virtual service flags */ |
343 | IPVS_SVC_ATTR_TIMEOUT, /* persistent timeout */ |
344 | IPVS_SVC_ATTR_NETMASK, /* persistent netmask */ |
345 | |
346 | IPVS_SVC_ATTR_STATS, /* nested attribute for service stats */ |
347 | |
348 | IPVS_SVC_ATTR_PE_NAME, /* name of ct retriever */ |
349 | |
350 | __IPVS_SVC_ATTR_MAX, |
351 | }; |
352 | |
353 | #define IPVS_SVC_ATTR_MAX (__IPVS_SVC_ATTR_MAX - 1) |
354 | |
355 | /* |
356 | * Attributes used to describe a destination (real server) |
357 | * |
358 | * Used inside nested attribute IPVS_CMD_ATTR_DEST |
359 | */ |
360 | enum { |
361 | IPVS_DEST_ATTR_UNSPEC = 0, |
362 | IPVS_DEST_ATTR_ADDR, /* real server address */ |
363 | IPVS_DEST_ATTR_PORT, /* real server port */ |
364 | |
365 | IPVS_DEST_ATTR_FWD_METHOD, /* forwarding method */ |
366 | IPVS_DEST_ATTR_WEIGHT, /* destination weight */ |
367 | |
368 | IPVS_DEST_ATTR_U_THRESH, /* upper threshold */ |
369 | IPVS_DEST_ATTR_L_THRESH, /* lower threshold */ |
370 | |
371 | IPVS_DEST_ATTR_ACTIVE_CONNS, /* active connections */ |
372 | IPVS_DEST_ATTR_INACT_CONNS, /* inactive connections */ |
373 | IPVS_DEST_ATTR_PERSIST_CONNS, /* persistent connections */ |
374 | |
375 | IPVS_DEST_ATTR_STATS, /* nested attribute for dest stats */ |
376 | __IPVS_DEST_ATTR_MAX, |
377 | }; |
378 | |
379 | #define IPVS_DEST_ATTR_MAX (__IPVS_DEST_ATTR_MAX - 1) |
380 | |
381 | /* |
382 | * Attributes describing a sync daemon |
383 | * |
384 | * Used inside nested attribute IPVS_CMD_ATTR_DAEMON |
385 | */ |
386 | enum { |
387 | IPVS_DAEMON_ATTR_UNSPEC = 0, |
388 | IPVS_DAEMON_ATTR_STATE, /* sync daemon state (master/backup) */ |
389 | IPVS_DAEMON_ATTR_MCAST_IFN, /* multicast interface name */ |
390 | IPVS_DAEMON_ATTR_SYNC_ID, /* SyncID we belong to */ |
391 | __IPVS_DAEMON_ATTR_MAX, |
392 | }; |
393 | |
394 | #define IPVS_DAEMON_ATTR_MAX (__IPVS_DAEMON_ATTR_MAX - 1) |
395 | |
396 | /* |
397 | * Attributes used to describe service or destination entry statistics |
398 | * |
399 | * Used inside nested attributes IPVS_SVC_ATTR_STATS and IPVS_DEST_ATTR_STATS |
400 | */ |
401 | enum { |
402 | IPVS_STATS_ATTR_UNSPEC = 0, |
403 | IPVS_STATS_ATTR_CONNS, /* connections scheduled */ |
404 | IPVS_STATS_ATTR_INPKTS, /* incoming packets */ |
405 | IPVS_STATS_ATTR_OUTPKTS, /* outgoing packets */ |
406 | IPVS_STATS_ATTR_INBYTES, /* incoming bytes */ |
407 | IPVS_STATS_ATTR_OUTBYTES, /* outgoing bytes */ |
408 | |
409 | IPVS_STATS_ATTR_CPS, /* current connection rate */ |
410 | IPVS_STATS_ATTR_INPPS, /* current in packet rate */ |
411 | IPVS_STATS_ATTR_OUTPPS, /* current out packet rate */ |
412 | IPVS_STATS_ATTR_INBPS, /* current in byte rate */ |
413 | IPVS_STATS_ATTR_OUTBPS, /* current out byte rate */ |
414 | __IPVS_STATS_ATTR_MAX, |
415 | }; |
416 | |
417 | #define IPVS_STATS_ATTR_MAX (__IPVS_STATS_ATTR_MAX - 1) |
418 | |
419 | /* Attributes used in response to IPVS_CMD_GET_INFO command */ |
420 | enum { |
421 | IPVS_INFO_ATTR_UNSPEC = 0, |
422 | IPVS_INFO_ATTR_VERSION, /* IPVS version number */ |
423 | IPVS_INFO_ATTR_CONN_TAB_SIZE, /* size of connection hash table */ |
424 | __IPVS_INFO_ATTR_MAX, |
425 | }; |
426 | |
427 | #define IPVS_INFO_ATTR_MAX (__IPVS_INFO_ATTR_MAX - 1) |
428 | |
429 | #endif /* _IP_VS_H */ |
430 |
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