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TOMOYO Linux Cross Reference
Linux/include/uapi/linux/ip_vs.h

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  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 #define IP_VS_SVC_F_SCHED1      0x0008          /* scheduler flag 1 */
 24 #define IP_VS_SVC_F_SCHED2      0x0010          /* scheduler flag 2 */
 25 #define IP_VS_SVC_F_SCHED3      0x0020          /* scheduler flag 3 */
 26 
 27 #define IP_VS_SVC_F_SCHED_SH_FALLBACK   IP_VS_SVC_F_SCHED1 /* SH fallback */
 28 #define IP_VS_SVC_F_SCHED_SH_PORT       IP_VS_SVC_F_SCHED2 /* SH use port */
 29 
 30 /*
 31  *      Destination Server Flags
 32  */
 33 #define IP_VS_DEST_F_AVAILABLE  0x0001          /* server is available */
 34 #define IP_VS_DEST_F_OVERLOAD   0x0002          /* server is overloaded */
 35 
 36 /*
 37  *      IPVS sync daemon states
 38  */
 39 #define IP_VS_STATE_NONE        0x0000          /* daemon is stopped */
 40 #define IP_VS_STATE_MASTER      0x0001          /* started as master */
 41 #define IP_VS_STATE_BACKUP      0x0002          /* started as backup */
 42 
 43 /*
 44  *      IPVS socket options
 45  */
 46 #define IP_VS_BASE_CTL          (64+1024+64)            /* base */
 47 
 48 #define IP_VS_SO_SET_NONE       IP_VS_BASE_CTL          /* just peek */
 49 #define IP_VS_SO_SET_INSERT     (IP_VS_BASE_CTL+1)
 50 #define IP_VS_SO_SET_ADD        (IP_VS_BASE_CTL+2)
 51 #define IP_VS_SO_SET_EDIT       (IP_VS_BASE_CTL+3)
 52 #define IP_VS_SO_SET_DEL        (IP_VS_BASE_CTL+4)
 53 #define IP_VS_SO_SET_FLUSH      (IP_VS_BASE_CTL+5)
 54 #define IP_VS_SO_SET_LIST       (IP_VS_BASE_CTL+6)
 55 #define IP_VS_SO_SET_ADDDEST    (IP_VS_BASE_CTL+7)
 56 #define IP_VS_SO_SET_DELDEST    (IP_VS_BASE_CTL+8)
 57 #define IP_VS_SO_SET_EDITDEST   (IP_VS_BASE_CTL+9)
 58 #define IP_VS_SO_SET_TIMEOUT    (IP_VS_BASE_CTL+10)
 59 #define IP_VS_SO_SET_STARTDAEMON (IP_VS_BASE_CTL+11)
 60 #define IP_VS_SO_SET_STOPDAEMON (IP_VS_BASE_CTL+12)
 61 #define IP_VS_SO_SET_RESTORE    (IP_VS_BASE_CTL+13)
 62 #define IP_VS_SO_SET_SAVE       (IP_VS_BASE_CTL+14)
 63 #define IP_VS_SO_SET_ZERO       (IP_VS_BASE_CTL+15)
 64 #define IP_VS_SO_SET_MAX        IP_VS_SO_SET_ZERO
 65 
 66 #define IP_VS_SO_GET_VERSION    IP_VS_BASE_CTL
 67 #define IP_VS_SO_GET_INFO       (IP_VS_BASE_CTL+1)
 68 #define IP_VS_SO_GET_SERVICES   (IP_VS_BASE_CTL+2)
 69 #define IP_VS_SO_GET_SERVICE    (IP_VS_BASE_CTL+3)
 70 #define IP_VS_SO_GET_DESTS      (IP_VS_BASE_CTL+4)
 71 #define IP_VS_SO_GET_DEST       (IP_VS_BASE_CTL+5)      /* not used now */
 72 #define IP_VS_SO_GET_TIMEOUT    (IP_VS_BASE_CTL+6)
 73 #define IP_VS_SO_GET_DAEMON     (IP_VS_BASE_CTL+7)
 74 #define IP_VS_SO_GET_MAX        IP_VS_SO_GET_DAEMON
 75 
 76 
 77 /*
 78  *      IPVS Connection Flags
 79  *      Only flags 0..15 are sent to backup server
 80  */
 81 #define IP_VS_CONN_F_FWD_MASK   0x0007          /* mask for the fwd methods */
 82 #define IP_VS_CONN_F_MASQ       0x0000          /* masquerading/NAT */
 83 #define IP_VS_CONN_F_LOCALNODE  0x0001          /* local node */
 84 #define IP_VS_CONN_F_TUNNEL     0x0002          /* tunneling */
 85 #define IP_VS_CONN_F_DROUTE     0x0003          /* direct routing */
 86 #define IP_VS_CONN_F_BYPASS     0x0004          /* cache bypass */
 87 #define IP_VS_CONN_F_SYNC       0x0020          /* entry created by sync */
 88 #define IP_VS_CONN_F_HASHED     0x0040          /* hashed entry */
 89 #define IP_VS_CONN_F_NOOUTPUT   0x0080          /* no output packets */
 90 #define IP_VS_CONN_F_INACTIVE   0x0100          /* not established */
 91 #define IP_VS_CONN_F_OUT_SEQ    0x0200          /* must do output seq adjust */
 92 #define IP_VS_CONN_F_IN_SEQ     0x0400          /* must do input seq adjust */
 93 #define IP_VS_CONN_F_SEQ_MASK   0x0600          /* in/out sequence mask */
 94 #define IP_VS_CONN_F_NO_CPORT   0x0800          /* no client port set yet */
 95 #define IP_VS_CONN_F_TEMPLATE   0x1000          /* template, not connection */
 96 #define IP_VS_CONN_F_ONE_PACKET 0x2000          /* forward only one packet */
 97 
 98 /* Initial bits allowed in backup server */
 99 #define IP_VS_CONN_F_BACKUP_MASK (IP_VS_CONN_F_FWD_MASK | \
100                                   IP_VS_CONN_F_NOOUTPUT | \
101                                   IP_VS_CONN_F_INACTIVE | \
102                                   IP_VS_CONN_F_SEQ_MASK | \
103                                   IP_VS_CONN_F_NO_CPORT | \
104                                   IP_VS_CONN_F_TEMPLATE \
105                                  )
106 
107 /* Bits allowed to update in backup server */
108 #define IP_VS_CONN_F_BACKUP_UPD_MASK (IP_VS_CONN_F_INACTIVE | \
109                                       IP_VS_CONN_F_SEQ_MASK)
110 
111 /* Flags that are not sent to backup server start from bit 16 */
112 #define IP_VS_CONN_F_NFCT       (1 << 16)       /* use netfilter conntrack */
113 
114 /* Connection flags from destination that can be changed by user space */
115 #define IP_VS_CONN_F_DEST_MASK (IP_VS_CONN_F_FWD_MASK | \
116                                 IP_VS_CONN_F_ONE_PACKET | \
117                                 IP_VS_CONN_F_NFCT | \
118                                 0)
119 
120 #define IP_VS_SCHEDNAME_MAXLEN  16
121 #define IP_VS_PENAME_MAXLEN     16
122 #define IP_VS_IFNAME_MAXLEN     16
123 
124 #define IP_VS_PEDATA_MAXLEN     255
125 
126 /*
127  *      The struct ip_vs_service_user and struct ip_vs_dest_user are
128  *      used to set IPVS rules through setsockopt.
129  */
130 struct ip_vs_service_user {
131         /* virtual service addresses */
132         __u16           protocol;
133         __be32                  addr;           /* virtual ip address */
134         __be16                  port;
135         __u32           fwmark;         /* firwall mark of service */
136 
137         /* virtual service options */
138         char                    sched_name[IP_VS_SCHEDNAME_MAXLEN];
139         unsigned int            flags;          /* virtual service flags */
140         unsigned int            timeout;        /* persistent timeout in sec */
141         __be32                  netmask;        /* persistent netmask */
142 };
143 
144 
145 struct ip_vs_dest_user {
146         /* destination server address */
147         __be32                  addr;
148         __be16                  port;
149 
150         /* real server options */
151         unsigned int            conn_flags;     /* connection flags */
152         int                     weight;         /* destination weight */
153 
154         /* thresholds for active connections */
155         __u32           u_threshold;    /* upper threshold */
156         __u32           l_threshold;    /* lower threshold */
157 };
158 
159 
160 /*
161  *      IPVS statistics object (for user space)
162  */
163 struct ip_vs_stats_user {
164         __u32                   conns;          /* connections scheduled */
165         __u32                   inpkts;         /* incoming packets */
166         __u32                   outpkts;        /* outgoing packets */
167         __u64                   inbytes;        /* incoming bytes */
168         __u64                   outbytes;       /* outgoing bytes */
169 
170         __u32                   cps;            /* current connection rate */
171         __u32                   inpps;          /* current in packet rate */
172         __u32                   outpps;         /* current out packet rate */
173         __u32                   inbps;          /* current in byte rate */
174         __u32                   outbps;         /* current out byte rate */
175 };
176 
177 
178 /* The argument to IP_VS_SO_GET_INFO */
179 struct ip_vs_getinfo {
180         /* version number */
181         unsigned int            version;
182 
183         /* size of connection hash table */
184         unsigned int            size;
185 
186         /* number of virtual services */
187         unsigned int            num_services;
188 };
189 
190 
191 /* The argument to IP_VS_SO_GET_SERVICE */
192 struct ip_vs_service_entry {
193         /* which service: user fills in these */
194         __u16           protocol;
195         __be32                  addr;           /* virtual address */
196         __be16                  port;
197         __u32           fwmark;         /* firwall mark of service */
198 
199         /* service options */
200         char                    sched_name[IP_VS_SCHEDNAME_MAXLEN];
201         unsigned int            flags;          /* virtual service flags */
202         unsigned int            timeout;        /* persistent timeout */
203         __be32                  netmask;        /* persistent netmask */
204 
205         /* number of real servers */
206         unsigned int            num_dests;
207 
208         /* statistics */
209         struct ip_vs_stats_user stats;
210 };
211 
212 
213 struct ip_vs_dest_entry {
214         __be32                  addr;           /* destination address */
215         __be16                  port;
216         unsigned int            conn_flags;     /* connection flags */
217         int                     weight;         /* destination weight */
218 
219         __u32           u_threshold;    /* upper threshold */
220         __u32           l_threshold;    /* lower threshold */
221 
222         __u32           activeconns;    /* active connections */
223         __u32           inactconns;     /* inactive connections */
224         __u32           persistconns;   /* persistent connections */
225 
226         /* statistics */
227         struct ip_vs_stats_user stats;
228 };
229 
230 
231 /* The argument to IP_VS_SO_GET_DESTS */
232 struct ip_vs_get_dests {
233         /* which service: user fills in these */
234         __u16           protocol;
235         __be32                  addr;           /* virtual address */
236         __be16                  port;
237         __u32           fwmark;         /* firwall mark of service */
238 
239         /* number of real servers */
240         unsigned int            num_dests;
241 
242         /* the real servers */
243         struct ip_vs_dest_entry entrytable[0];
244 };
245 
246 
247 /* The argument to IP_VS_SO_GET_SERVICES */
248 struct ip_vs_get_services {
249         /* number of virtual services */
250         unsigned int            num_services;
251 
252         /* service table */
253         struct ip_vs_service_entry entrytable[0];
254 };
255 
256 
257 /* The argument to IP_VS_SO_GET_TIMEOUT */
258 struct ip_vs_timeout_user {
259         int                     tcp_timeout;
260         int                     tcp_fin_timeout;
261         int                     udp_timeout;
262 };
263 
264 
265 /* The argument to IP_VS_SO_GET_DAEMON */
266 struct ip_vs_daemon_user {
267         /* sync daemon state (master/backup) */
268         int                     state;
269 
270         /* multicast interface name */
271         char                    mcast_ifn[IP_VS_IFNAME_MAXLEN];
272 
273         /* SyncID we belong to */
274         int                     syncid;
275 };
276 
277 /*
278  *
279  * IPVS Generic Netlink interface definitions
280  *
281  */
282 
283 /* Generic Netlink family info */
284 
285 #define IPVS_GENL_NAME          "IPVS"
286 #define IPVS_GENL_VERSION       0x1
287 
288 struct ip_vs_flags {
289         __u32 flags;
290         __u32 mask;
291 };
292 
293 /* Generic Netlink command attributes */
294 enum {
295         IPVS_CMD_UNSPEC = 0,
296 
297         IPVS_CMD_NEW_SERVICE,           /* add service */
298         IPVS_CMD_SET_SERVICE,           /* modify service */
299         IPVS_CMD_DEL_SERVICE,           /* delete service */
300         IPVS_CMD_GET_SERVICE,           /* get service info */
301 
302         IPVS_CMD_NEW_DEST,              /* add destination */
303         IPVS_CMD_SET_DEST,              /* modify destination */
304         IPVS_CMD_DEL_DEST,              /* delete destination */
305         IPVS_CMD_GET_DEST,              /* get destination info */
306 
307         IPVS_CMD_NEW_DAEMON,            /* start sync daemon */
308         IPVS_CMD_DEL_DAEMON,            /* stop sync daemon */
309         IPVS_CMD_GET_DAEMON,            /* get sync daemon status */
310 
311         IPVS_CMD_SET_CONFIG,            /* set config settings */
312         IPVS_CMD_GET_CONFIG,            /* get config settings */
313 
314         IPVS_CMD_SET_INFO,              /* only used in GET_INFO reply */
315         IPVS_CMD_GET_INFO,              /* get general IPVS info */
316 
317         IPVS_CMD_ZERO,                  /* zero all counters and stats */
318         IPVS_CMD_FLUSH,                 /* flush services and dests */
319 
320         __IPVS_CMD_MAX,
321 };
322 
323 #define IPVS_CMD_MAX (__IPVS_CMD_MAX - 1)
324 
325 /* Attributes used in the first level of commands */
326 enum {
327         IPVS_CMD_ATTR_UNSPEC = 0,
328         IPVS_CMD_ATTR_SERVICE,          /* nested service attribute */
329         IPVS_CMD_ATTR_DEST,             /* nested destination attribute */
330         IPVS_CMD_ATTR_DAEMON,           /* nested sync daemon attribute */
331         IPVS_CMD_ATTR_TIMEOUT_TCP,      /* TCP connection timeout */
332         IPVS_CMD_ATTR_TIMEOUT_TCP_FIN,  /* TCP FIN wait timeout */
333         IPVS_CMD_ATTR_TIMEOUT_UDP,      /* UDP timeout */
334         __IPVS_CMD_ATTR_MAX,
335 };
336 
337 #define IPVS_CMD_ATTR_MAX (__IPVS_SVC_ATTR_MAX - 1)
338 
339 /*
340  * Attributes used to describe a service
341  *
342  * Used inside nested attribute IPVS_CMD_ATTR_SERVICE
343  */
344 enum {
345         IPVS_SVC_ATTR_UNSPEC = 0,
346         IPVS_SVC_ATTR_AF,               /* address family */
347         IPVS_SVC_ATTR_PROTOCOL,         /* virtual service protocol */
348         IPVS_SVC_ATTR_ADDR,             /* virtual service address */
349         IPVS_SVC_ATTR_PORT,             /* virtual service port */
350         IPVS_SVC_ATTR_FWMARK,           /* firewall mark of service */
351 
352         IPVS_SVC_ATTR_SCHED_NAME,       /* name of scheduler */
353         IPVS_SVC_ATTR_FLAGS,            /* virtual service flags */
354         IPVS_SVC_ATTR_TIMEOUT,          /* persistent timeout */
355         IPVS_SVC_ATTR_NETMASK,          /* persistent netmask */
356 
357         IPVS_SVC_ATTR_STATS,            /* nested attribute for service stats */
358 
359         IPVS_SVC_ATTR_PE_NAME,          /* name of ct retriever */
360 
361         __IPVS_SVC_ATTR_MAX,
362 };
363 
364 #define IPVS_SVC_ATTR_MAX (__IPVS_SVC_ATTR_MAX - 1)
365 
366 /*
367  * Attributes used to describe a destination (real server)
368  *
369  * Used inside nested attribute IPVS_CMD_ATTR_DEST
370  */
371 enum {
372         IPVS_DEST_ATTR_UNSPEC = 0,
373         IPVS_DEST_ATTR_ADDR,            /* real server address */
374         IPVS_DEST_ATTR_PORT,            /* real server port */
375 
376         IPVS_DEST_ATTR_FWD_METHOD,      /* forwarding method */
377         IPVS_DEST_ATTR_WEIGHT,          /* destination weight */
378 
379         IPVS_DEST_ATTR_U_THRESH,        /* upper threshold */
380         IPVS_DEST_ATTR_L_THRESH,        /* lower threshold */
381 
382         IPVS_DEST_ATTR_ACTIVE_CONNS,    /* active connections */
383         IPVS_DEST_ATTR_INACT_CONNS,     /* inactive connections */
384         IPVS_DEST_ATTR_PERSIST_CONNS,   /* persistent connections */
385 
386         IPVS_DEST_ATTR_STATS,           /* nested attribute for dest stats */
387         __IPVS_DEST_ATTR_MAX,
388 };
389 
390 #define IPVS_DEST_ATTR_MAX (__IPVS_DEST_ATTR_MAX - 1)
391 
392 /*
393  * Attributes describing a sync daemon
394  *
395  * Used inside nested attribute IPVS_CMD_ATTR_DAEMON
396  */
397 enum {
398         IPVS_DAEMON_ATTR_UNSPEC = 0,
399         IPVS_DAEMON_ATTR_STATE,         /* sync daemon state (master/backup) */
400         IPVS_DAEMON_ATTR_MCAST_IFN,     /* multicast interface name */
401         IPVS_DAEMON_ATTR_SYNC_ID,       /* SyncID we belong to */
402         __IPVS_DAEMON_ATTR_MAX,
403 };
404 
405 #define IPVS_DAEMON_ATTR_MAX (__IPVS_DAEMON_ATTR_MAX - 1)
406 
407 /*
408  * Attributes used to describe service or destination entry statistics
409  *
410  * Used inside nested attributes IPVS_SVC_ATTR_STATS and IPVS_DEST_ATTR_STATS
411  */
412 enum {
413         IPVS_STATS_ATTR_UNSPEC = 0,
414         IPVS_STATS_ATTR_CONNS,          /* connections scheduled */
415         IPVS_STATS_ATTR_INPKTS,         /* incoming packets */
416         IPVS_STATS_ATTR_OUTPKTS,        /* outgoing packets */
417         IPVS_STATS_ATTR_INBYTES,        /* incoming bytes */
418         IPVS_STATS_ATTR_OUTBYTES,       /* outgoing bytes */
419 
420         IPVS_STATS_ATTR_CPS,            /* current connection rate */
421         IPVS_STATS_ATTR_INPPS,          /* current in packet rate */
422         IPVS_STATS_ATTR_OUTPPS,         /* current out packet rate */
423         IPVS_STATS_ATTR_INBPS,          /* current in byte rate */
424         IPVS_STATS_ATTR_OUTBPS,         /* current out byte rate */
425         __IPVS_STATS_ATTR_MAX,
426 };
427 
428 #define IPVS_STATS_ATTR_MAX (__IPVS_STATS_ATTR_MAX - 1)
429 
430 /* Attributes used in response to IPVS_CMD_GET_INFO command */
431 enum {
432         IPVS_INFO_ATTR_UNSPEC = 0,
433         IPVS_INFO_ATTR_VERSION,         /* IPVS version number */
434         IPVS_INFO_ATTR_CONN_TAB_SIZE,   /* size of connection hash table */
435         __IPVS_INFO_ATTR_MAX,
436 };
437 
438 #define IPVS_INFO_ATTR_MAX (__IPVS_INFO_ATTR_MAX - 1)
439 
440 #endif  /* _IP_VS_H */
441 

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