Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
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linux
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
23/*
24 * Destination Server Flags
25 */
26#define IP_VS_DEST_F_AVAILABLE 0x0001 /* server is available */
27#define IP_VS_DEST_F_OVERLOAD 0x0002 /* server is overloaded */
28
29/*
30 * IPVS sync daemon states
31 */
32#define IP_VS_STATE_NONE 0x0000 /* daemon is stopped */
33#define IP_VS_STATE_MASTER 0x0001 /* started as master */
34#define IP_VS_STATE_BACKUP 0x0002 /* started as backup */
35
36/*
37 * IPVS socket options
38 */
39#define IP_VS_BASE_CTL (64+1024+64) /* base */
40
41#define IP_VS_SO_SET_NONE IP_VS_BASE_CTL /* just peek */
42#define IP_VS_SO_SET_INSERT (IP_VS_BASE_CTL+1)
43#define IP_VS_SO_SET_ADD (IP_VS_BASE_CTL+2)
44#define IP_VS_SO_SET_EDIT (IP_VS_BASE_CTL+3)
45#define IP_VS_SO_SET_DEL (IP_VS_BASE_CTL+4)
46#define IP_VS_SO_SET_FLUSH (IP_VS_BASE_CTL+5)
47#define IP_VS_SO_SET_LIST (IP_VS_BASE_CTL+6)
48#define IP_VS_SO_SET_ADDDEST (IP_VS_BASE_CTL+7)
49#define IP_VS_SO_SET_DELDEST (IP_VS_BASE_CTL+8)
50#define IP_VS_SO_SET_EDITDEST (IP_VS_BASE_CTL+9)
51#define IP_VS_SO_SET_TIMEOUT (IP_VS_BASE_CTL+10)
52#define IP_VS_SO_SET_STARTDAEMON (IP_VS_BASE_CTL+11)
53#define IP_VS_SO_SET_STOPDAEMON (IP_VS_BASE_CTL+12)
54#define IP_VS_SO_SET_RESTORE (IP_VS_BASE_CTL+13)
55#define IP_VS_SO_SET_SAVE (IP_VS_BASE_CTL+14)
56#define IP_VS_SO_SET_ZERO (IP_VS_BASE_CTL+15)
57#define IP_VS_SO_SET_MAX IP_VS_SO_SET_ZERO
58
59#define IP_VS_SO_GET_VERSION IP_VS_BASE_CTL
60#define IP_VS_SO_GET_INFO (IP_VS_BASE_CTL+1)
61#define IP_VS_SO_GET_SERVICES (IP_VS_BASE_CTL+2)
62#define IP_VS_SO_GET_SERVICE (IP_VS_BASE_CTL+3)
63#define IP_VS_SO_GET_DESTS (IP_VS_BASE_CTL+4)
64#define IP_VS_SO_GET_DEST (IP_VS_BASE_CTL+5) /* not used now */
65#define IP_VS_SO_GET_TIMEOUT (IP_VS_BASE_CTL+6)
66#define IP_VS_SO_GET_DAEMON (IP_VS_BASE_CTL+7)
67#define IP_VS_SO_GET_MAX IP_VS_SO_GET_DAEMON
68
69
70/*
71 * IPVS Connection Flags
72 */
73#define IP_VS_CONN_F_FWD_MASK 0x0007 /* mask for the fwd methods */
74#define IP_VS_CONN_F_MASQ 0x0000 /* masquerading/NAT */
75#define IP_VS_CONN_F_LOCALNODE 0x0001 /* local node */
76#define IP_VS_CONN_F_TUNNEL 0x0002 /* tunneling */
77#define IP_VS_CONN_F_DROUTE 0x0003 /* direct routing */
78#define IP_VS_CONN_F_BYPASS 0x0004 /* cache bypass */
79#define IP_VS_CONN_F_SYNC 0x0020 /* entry created by sync */
80#define IP_VS_CONN_F_HASHED 0x0040 /* hashed entry */
81#define IP_VS_CONN_F_NOOUTPUT 0x0080 /* no output packets */
82#define IP_VS_CONN_F_INACTIVE 0x0100 /* not established */
83#define IP_VS_CONN_F_OUT_SEQ 0x0200 /* must do output seq adjust */
84#define IP_VS_CONN_F_IN_SEQ 0x0400 /* must do input seq adjust */
85#define IP_VS_CONN_F_SEQ_MASK 0x0600 /* in/out sequence mask */
86#define IP_VS_CONN_F_NO_CPORT 0x0800 /* no client port set yet */
87#define IP_VS_CONN_F_TEMPLATE 0x1000 /* template, not connection */
88
89#define IP_VS_SCHEDNAME_MAXLEN 16
90#define IP_VS_IFNAME_MAXLEN 16
91
92
93/*
94 * The struct ip_vs_service_user and struct ip_vs_dest_user are
95 * used to set IPVS rules through setsockopt.
96 */
97struct ip_vs_service_user {
98 /* virtual service addresses */
99 u_int16_t protocol;
100 __be32 addr; /* virtual ip address */
101 __be16 port;
102 u_int32_t fwmark; /* firwall mark of service */
103
104 /* virtual service options */
105 char sched_name[IP_VS_SCHEDNAME_MAXLEN];
106 unsigned flags; /* virtual service flags */
107 unsigned timeout; /* persistent timeout in sec */
108 __be32 netmask; /* persistent netmask */
109};
110
111
112struct ip_vs_dest_user {
113 /* destination server address */
114 __be32 addr;
115 __be16 port;
116
117 /* real server options */
118 unsigned conn_flags; /* connection flags */
119 int weight; /* destination weight */
120
121 /* thresholds for active connections */
122 u_int32_t u_threshold; /* upper threshold */
123 u_int32_t l_threshold; /* lower threshold */
124};
125
126
127/*
128 * IPVS statistics object (for user space)
129 */
130struct ip_vs_stats_user
131{
132 __u32 conns; /* connections scheduled */
133 __u32 inpkts; /* incoming packets */
134 __u32 outpkts; /* outgoing packets */
135 __u64 inbytes; /* incoming bytes */
136 __u64 outbytes; /* outgoing bytes */
137
138 __u32 cps; /* current connection rate */
139 __u32 inpps; /* current in packet rate */
140 __u32 outpps; /* current out packet rate */
141 __u32 inbps; /* current in byte rate */
142 __u32 outbps; /* current out byte rate */
143};
144
145
146/* The argument to IP_VS_SO_GET_INFO */
147struct ip_vs_getinfo {
148 /* version number */
149 unsigned int version;
150
151 /* size of connection hash table */
152 unsigned int size;
153
154 /* number of virtual services */
155 unsigned int num_services;
156};
157
158
159/* The argument to IP_VS_SO_GET_SERVICE */
160struct ip_vs_service_entry {
161 /* which service: user fills in these */
162 u_int16_t protocol;
163 __be32 addr; /* virtual address */
164 __be16 port;
165 u_int32_t fwmark; /* firwall mark of service */
166
167 /* service options */
168 char sched_name[IP_VS_SCHEDNAME_MAXLEN];
169 unsigned flags; /* virtual service flags */
170 unsigned timeout; /* persistent timeout */
171 __be32 netmask; /* persistent netmask */
172
173 /* number of real servers */
174 unsigned int num_dests;
175
176 /* statistics */
177 struct ip_vs_stats_user stats;
178};
179
180
181struct ip_vs_dest_entry {
182 __be32 addr; /* destination address */
183 __be16 port;
184 unsigned conn_flags; /* connection flags */
185 int weight; /* destination weight */
186
187 u_int32_t u_threshold; /* upper threshold */
188 u_int32_t l_threshold; /* lower threshold */
189
190 u_int32_t activeconns; /* active connections */
191 u_int32_t inactconns; /* inactive connections */
192 u_int32_t persistconns; /* persistent connections */
193
194 /* statistics */
195 struct ip_vs_stats_user stats;
196};
197
198
199/* The argument to IP_VS_SO_GET_DESTS */
200struct ip_vs_get_dests {
201 /* which service: user fills in these */
202 u_int16_t protocol;
203 __be32 addr; /* virtual address */
204 __be16 port;
205 u_int32_t fwmark; /* firwall mark of service */
206
207 /* number of real servers */
208 unsigned int num_dests;
209
210 /* the real servers */
211 struct ip_vs_dest_entry entrytable[0];
212};
213
214
215/* The argument to IP_VS_SO_GET_SERVICES */
216struct ip_vs_get_services {
217 /* number of virtual services */
218 unsigned int num_services;
219
220 /* service table */
221 struct ip_vs_service_entry entrytable[0];
222};
223
224
225/* The argument to IP_VS_SO_GET_TIMEOUT */
226struct ip_vs_timeout_user {
227 int tcp_timeout;
228 int tcp_fin_timeout;
229 int udp_timeout;
230};
231
232
233/* The argument to IP_VS_SO_GET_DAEMON */
234struct ip_vs_daemon_user {
235 /* sync daemon state (master/backup) */
236 int state;
237
238 /* multicast interface name */
239 char mcast_ifn[IP_VS_IFNAME_MAXLEN];
240
241 /* SyncID we belong to */
242 int syncid;
243};
244
245#endif /* _IP_VS_H */