3 * data structure and functionality definitions
9 #include <linux/types.h> /* For __beXX types in userland */
11 #define IP_VS_VERSION_CODE 0x010201
12 #define NVERSION(version) \
13 (version >> 16) & 0xFF, \
14 (version >> 8) & 0xFF, \
18 * Virtual Service Flags
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 */
25 * Destination Server Flags
27 #define IP_VS_DEST_F_AVAILABLE 0x0001 /* server is available */
28 #define IP_VS_DEST_F_OVERLOAD 0x0002 /* server is overloaded */
31 * IPVS sync daemon states
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 */
40 #define IP_VS_BASE_CTL (64+1024+64) /* base */
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
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
72 * IPVS Connection Flags
73 * Only flags 0..15 are sent to backup server
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 */
92 /* Flags that are not sent to backup server start from bit 16 */
93 #define IP_VS_CONN_F_NFCT (1 << 16) /* use netfilter conntrack */
95 /* Connection flags from destination that can be changed by user space */
96 #define IP_VS_CONN_F_DEST_MASK (IP_VS_CONN_F_FWD_MASK | \
97 IP_VS_CONN_F_ONE_PACKET | \
101 #define IP_VS_SCHEDNAME_MAXLEN 16
102 #define IP_VS_IFNAME_MAXLEN 16
106 * The struct ip_vs_service_user and struct ip_vs_dest_user are
107 * used to set IPVS rules through setsockopt.
109 struct ip_vs_service_user {
110 /* virtual service addresses */
112 __be32 addr; /* virtual ip address */
114 __u32 fwmark; /* firwall mark of service */
116 /* virtual service options */
117 char sched_name[IP_VS_SCHEDNAME_MAXLEN];
118 unsigned flags; /* virtual service flags */
119 unsigned timeout; /* persistent timeout in sec */
120 __be32 netmask; /* persistent netmask */
124 struct ip_vs_dest_user {
125 /* destination server address */
129 /* real server options */
130 unsigned conn_flags; /* connection flags */
131 int weight; /* destination weight */
133 /* thresholds for active connections */
134 __u32 u_threshold; /* upper threshold */
135 __u32 l_threshold; /* lower threshold */
140 * IPVS statistics object (for user space)
142 struct ip_vs_stats_user {
143 __u32 conns; /* connections scheduled */
144 __u32 inpkts; /* incoming packets */
145 __u32 outpkts; /* outgoing packets */
146 __u64 inbytes; /* incoming bytes */
147 __u64 outbytes; /* outgoing bytes */
149 __u32 cps; /* current connection rate */
150 __u32 inpps; /* current in packet rate */
151 __u32 outpps; /* current out packet rate */
152 __u32 inbps; /* current in byte rate */
153 __u32 outbps; /* current out byte rate */
157 /* The argument to IP_VS_SO_GET_INFO */
158 struct ip_vs_getinfo {
160 unsigned int version;
162 /* size of connection hash table */
165 /* number of virtual services */
166 unsigned int num_services;
170 /* The argument to IP_VS_SO_GET_SERVICE */
171 struct ip_vs_service_entry {
172 /* which service: user fills in these */
174 __be32 addr; /* virtual address */
176 __u32 fwmark; /* firwall mark of service */
178 /* service options */
179 char sched_name[IP_VS_SCHEDNAME_MAXLEN];
180 unsigned flags; /* virtual service flags */
181 unsigned timeout; /* persistent timeout */
182 __be32 netmask; /* persistent netmask */
184 /* number of real servers */
185 unsigned int num_dests;
188 struct ip_vs_stats_user stats;
192 struct ip_vs_dest_entry {
193 __be32 addr; /* destination address */
195 unsigned conn_flags; /* connection flags */
196 int weight; /* destination weight */
198 __u32 u_threshold; /* upper threshold */
199 __u32 l_threshold; /* lower threshold */
201 __u32 activeconns; /* active connections */
202 __u32 inactconns; /* inactive connections */
203 __u32 persistconns; /* persistent connections */
206 struct ip_vs_stats_user stats;
210 /* The argument to IP_VS_SO_GET_DESTS */
211 struct ip_vs_get_dests {
212 /* which service: user fills in these */
214 __be32 addr; /* virtual address */
216 __u32 fwmark; /* firwall mark of service */
218 /* number of real servers */
219 unsigned int num_dests;
221 /* the real servers */
222 struct ip_vs_dest_entry entrytable[0];
226 /* The argument to IP_VS_SO_GET_SERVICES */
227 struct ip_vs_get_services {
228 /* number of virtual services */
229 unsigned int num_services;
232 struct ip_vs_service_entry entrytable[0];
236 /* The argument to IP_VS_SO_GET_TIMEOUT */
237 struct ip_vs_timeout_user {
244 /* The argument to IP_VS_SO_GET_DAEMON */
245 struct ip_vs_daemon_user {
246 /* sync daemon state (master/backup) */
249 /* multicast interface name */
250 char mcast_ifn[IP_VS_IFNAME_MAXLEN];
252 /* SyncID we belong to */
258 * IPVS Generic Netlink interface definitions
262 /* Generic Netlink family info */
264 #define IPVS_GENL_NAME "IPVS"
265 #define IPVS_GENL_VERSION 0x1
272 /* Generic Netlink command attributes */
276 IPVS_CMD_NEW_SERVICE, /* add service */
277 IPVS_CMD_SET_SERVICE, /* modify service */
278 IPVS_CMD_DEL_SERVICE, /* delete service */
279 IPVS_CMD_GET_SERVICE, /* get service info */
281 IPVS_CMD_NEW_DEST, /* add destination */
282 IPVS_CMD_SET_DEST, /* modify destination */
283 IPVS_CMD_DEL_DEST, /* delete destination */
284 IPVS_CMD_GET_DEST, /* get destination info */
286 IPVS_CMD_NEW_DAEMON, /* start sync daemon */
287 IPVS_CMD_DEL_DAEMON, /* stop sync daemon */
288 IPVS_CMD_GET_DAEMON, /* get sync daemon status */
290 IPVS_CMD_SET_CONFIG, /* set config settings */
291 IPVS_CMD_GET_CONFIG, /* get config settings */
293 IPVS_CMD_SET_INFO, /* only used in GET_INFO reply */
294 IPVS_CMD_GET_INFO, /* get general IPVS info */
296 IPVS_CMD_ZERO, /* zero all counters and stats */
297 IPVS_CMD_FLUSH, /* flush services and dests */
302 #define IPVS_CMD_MAX (__IPVS_CMD_MAX - 1)
304 /* Attributes used in the first level of commands */
306 IPVS_CMD_ATTR_UNSPEC = 0,
307 IPVS_CMD_ATTR_SERVICE, /* nested service attribute */
308 IPVS_CMD_ATTR_DEST, /* nested destination attribute */
309 IPVS_CMD_ATTR_DAEMON, /* nested sync daemon attribute */
310 IPVS_CMD_ATTR_TIMEOUT_TCP, /* TCP connection timeout */
311 IPVS_CMD_ATTR_TIMEOUT_TCP_FIN, /* TCP FIN wait timeout */
312 IPVS_CMD_ATTR_TIMEOUT_UDP, /* UDP timeout */
316 #define IPVS_CMD_ATTR_MAX (__IPVS_SVC_ATTR_MAX - 1)
319 * Attributes used to describe a service
321 * Used inside nested attribute IPVS_CMD_ATTR_SERVICE
324 IPVS_SVC_ATTR_UNSPEC = 0,
325 IPVS_SVC_ATTR_AF, /* address family */
326 IPVS_SVC_ATTR_PROTOCOL, /* virtual service protocol */
327 IPVS_SVC_ATTR_ADDR, /* virtual service address */
328 IPVS_SVC_ATTR_PORT, /* virtual service port */
329 IPVS_SVC_ATTR_FWMARK, /* firewall mark of service */
331 IPVS_SVC_ATTR_SCHED_NAME, /* name of scheduler */
332 IPVS_SVC_ATTR_FLAGS, /* virtual service flags */
333 IPVS_SVC_ATTR_TIMEOUT, /* persistent timeout */
334 IPVS_SVC_ATTR_NETMASK, /* persistent netmask */
336 IPVS_SVC_ATTR_STATS, /* nested attribute for service stats */
340 #define IPVS_SVC_ATTR_MAX (__IPVS_SVC_ATTR_MAX - 1)
343 * Attributes used to describe a destination (real server)
345 * Used inside nested attribute IPVS_CMD_ATTR_DEST
348 IPVS_DEST_ATTR_UNSPEC = 0,
349 IPVS_DEST_ATTR_ADDR, /* real server address */
350 IPVS_DEST_ATTR_PORT, /* real server port */
352 IPVS_DEST_ATTR_FWD_METHOD, /* forwarding method */
353 IPVS_DEST_ATTR_WEIGHT, /* destination weight */
355 IPVS_DEST_ATTR_U_THRESH, /* upper threshold */
356 IPVS_DEST_ATTR_L_THRESH, /* lower threshold */
358 IPVS_DEST_ATTR_ACTIVE_CONNS, /* active connections */
359 IPVS_DEST_ATTR_INACT_CONNS, /* inactive connections */
360 IPVS_DEST_ATTR_PERSIST_CONNS, /* persistent connections */
362 IPVS_DEST_ATTR_STATS, /* nested attribute for dest stats */
363 __IPVS_DEST_ATTR_MAX,
366 #define IPVS_DEST_ATTR_MAX (__IPVS_DEST_ATTR_MAX - 1)
369 * Attributes describing a sync daemon
371 * Used inside nested attribute IPVS_CMD_ATTR_DAEMON
374 IPVS_DAEMON_ATTR_UNSPEC = 0,
375 IPVS_DAEMON_ATTR_STATE, /* sync daemon state (master/backup) */
376 IPVS_DAEMON_ATTR_MCAST_IFN, /* multicast interface name */
377 IPVS_DAEMON_ATTR_SYNC_ID, /* SyncID we belong to */
378 __IPVS_DAEMON_ATTR_MAX,
381 #define IPVS_DAEMON_ATTR_MAX (__IPVS_DAEMON_ATTR_MAX - 1)
384 * Attributes used to describe service or destination entry statistics
386 * Used inside nested attributes IPVS_SVC_ATTR_STATS and IPVS_DEST_ATTR_STATS
389 IPVS_STATS_ATTR_UNSPEC = 0,
390 IPVS_STATS_ATTR_CONNS, /* connections scheduled */
391 IPVS_STATS_ATTR_INPKTS, /* incoming packets */
392 IPVS_STATS_ATTR_OUTPKTS, /* outgoing packets */
393 IPVS_STATS_ATTR_INBYTES, /* incoming bytes */
394 IPVS_STATS_ATTR_OUTBYTES, /* outgoing bytes */
396 IPVS_STATS_ATTR_CPS, /* current connection rate */
397 IPVS_STATS_ATTR_INPPS, /* current in packet rate */
398 IPVS_STATS_ATTR_OUTPPS, /* current out packet rate */
399 IPVS_STATS_ATTR_INBPS, /* current in byte rate */
400 IPVS_STATS_ATTR_OUTBPS, /* current out byte rate */
401 __IPVS_STATS_ATTR_MAX,
404 #define IPVS_STATS_ATTR_MAX (__IPVS_STATS_ATTR_MAX - 1)
406 /* Attributes used in response to IPVS_CMD_GET_INFO command */
408 IPVS_INFO_ATTR_UNSPEC = 0,
409 IPVS_INFO_ATTR_VERSION, /* IPVS version number */
410 IPVS_INFO_ATTR_CONN_TAB_SIZE, /* size of connection hash table */
411 __IPVS_INFO_ATTR_MAX,
414 #define IPVS_INFO_ATTR_MAX (__IPVS_INFO_ATTR_MAX - 1)
416 #endif /* _IP_VS_H */