1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
|
/*
* xen_unified.c: Unified Xen driver.
*
* Copyright (C) 2007, 2010-2011 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
* Richard W.M. Jones <rjones@redhat.com>
*/
#ifndef __VIR_XEN_UNIFIED_H__
# define __VIR_XEN_UNIFIED_H__
# include "internal.h"
# include "capabilities.h"
# include "driver.h"
# include "domain_conf.h"
# include "xs_internal.h"
# if WITH_XEN_INOTIFY
# include "xen_inotify.h"
# endif
# include "domain_event.h"
# include "virhash.h"
# ifndef HAVE_WINSOCK2_H
# include <sys/un.h>
# include <netinet/in.h>
# else
# include <winsock2.h>
# endif
# include <xen/xen.h>
/* xen-unstable changeset 19788 removed MAX_VIRT_CPUS from public
* headers. Its semantic was retained with XEN_LEGACY_MAX_VCPUS.
* Ensure MAX_VIRT_CPUS is defined accordingly.
*/
# if !defined(MAX_VIRT_CPUS) && defined(XEN_LEGACY_MAX_VCPUS)
# define MAX_VIRT_CPUS XEN_LEGACY_MAX_VCPUS
# endif
extern int xenRegister (void);
# define XEN_UNIFIED_HYPERVISOR_OFFSET 0
# define XEN_UNIFIED_XEND_OFFSET 1
# define XEN_UNIFIED_XS_OFFSET 2
# define XEN_UNIFIED_XM_OFFSET 3
# if WITH_XEN_INOTIFY
# define XEN_UNIFIED_INOTIFY_OFFSET 4
# define XEN_UNIFIED_NR_DRIVERS 5
# else
# define XEN_UNIFIED_NR_DRIVERS 4
# endif
# define MIN_XEN_GUEST_SIZE 64 /* 64 megabytes */
# define XEN_CONFIG_FORMAT_XM "xen-xm"
# define XEN_CONFIG_FORMAT_SEXPR "xen-sxpr"
# define XEND_DOMAINS_DIR "/var/lib/xend/domains"
# define XEN_SCHED_SEDF_NPARAM 6
# define XEN_SCHED_CRED_NPARAM 2
/* The set of migration flags explicitly supported by xen. */
# define XEN_MIGRATION_FLAGS \
(VIR_MIGRATE_LIVE | \
VIR_MIGRATE_UNDEFINE_SOURCE | \
VIR_MIGRATE_PAUSED | \
VIR_MIGRATE_PERSIST_DEST)
/* _xenUnifiedDriver:
*
* Entry points into the underlying Xen drivers. This structure
* will eventually go away and instead xen unified will make direct
* calls to the underlying Xen drivers.
*
* To reiterate - the goal is to remove elements from this structure
* until it is empty, replacing indirect calls through this
* structure with direct calls in xen_unified.c.
*/
struct xenUnifiedDriver {
virDrvClose xenClose; /* Only mandatory callback; all others may be NULL */
virDrvGetVersion xenVersion;
virDrvGetHostname xenGetHostname;
virDrvDomainSuspend xenDomainSuspend;
virDrvDomainResume xenDomainResume;
virDrvDomainShutdown xenDomainShutdown;
virDrvDomainReboot xenDomainReboot;
virDrvDomainDestroyFlags xenDomainDestroyFlags;
virDrvDomainGetOSType xenDomainGetOSType;
virDrvDomainGetMaxMemory xenDomainGetMaxMemory;
virDrvDomainSetMaxMemory xenDomainSetMaxMemory;
virDrvDomainSetMemory xenDomainSetMemory;
virDrvDomainGetInfo xenDomainGetInfo;
virDrvDomainPinVcpu xenDomainPinVcpu;
virDrvDomainGetVcpus xenDomainGetVcpus;
virDrvListDefinedDomains xenListDefinedDomains;
virDrvNumOfDefinedDomains xenNumOfDefinedDomains;
virDrvDomainCreate xenDomainCreate;
virDrvDomainDefineXML xenDomainDefineXML;
virDrvDomainUndefine xenDomainUndefine;
virDrvDomainAttachDeviceFlags xenDomainAttachDeviceFlags;
virDrvDomainDetachDeviceFlags xenDomainDetachDeviceFlags;
virDrvDomainGetSchedulerType xenDomainGetSchedulerType;
virDrvDomainGetSchedulerParameters xenDomainGetSchedulerParameters;
virDrvDomainSetSchedulerParameters xenDomainSetSchedulerParameters;
};
typedef struct xenXMConfCache *xenXMConfCachePtr;
typedef struct xenXMConfCache {
time_t refreshedAt;
char *filename;
virDomainDefPtr def;
} xenXMConfCache;
/* xenUnifiedDomainInfoPtr:
* The minimal state we have about active domains
* This is the minmal info necessary to still get a
* virDomainPtr when the domain goes away
*/
struct _xenUnifiedDomainInfo {
int id;
char *name;
unsigned char uuid[VIR_UUID_BUFLEN];
};
typedef struct _xenUnifiedDomainInfo xenUnifiedDomainInfo;
typedef xenUnifiedDomainInfo *xenUnifiedDomainInfoPtr;
struct _xenUnifiedDomainInfoList {
unsigned int count;
xenUnifiedDomainInfoPtr *doms;
};
typedef struct _xenUnifiedDomainInfoList xenUnifiedDomainInfoList;
typedef xenUnifiedDomainInfoList *xenUnifiedDomainInfoListPtr;
/* xenUnifiedPrivatePtr:
*
* Per-connection private data, stored in conn->privateData. All Xen
* low-level drivers access parts of this structure.
*/
struct _xenUnifiedPrivate {
virMutex lock;
/* These initial vars are initialized in Open method
* and readonly thereafter, so can be used without
* holding the lock
*/
virCapsPtr caps;
int handle; /* Xen hypervisor handle */
int xendConfigVersion; /* XenD config version */
/* connection to xend */
struct sockaddr_storage addr;
socklen_t addrlen;
int addrfamily;
int addrprotocol;
/* Keep track of the drivers which opened. We keep a yes/no flag
* here for each driver, corresponding to the array drivers in
* xen_unified.c.
*/
int opened[XEN_UNIFIED_NR_DRIVERS];
/*
* Everything from this point onwards must be protected
* by the lock when used
*/
struct xs_handle *xshandle; /* handle to talk to the xenstore */
/* A list of xenstore watches */
xenStoreWatchListPtr xsWatchList;
int xsWatch;
/* A list of active domain name/uuids */
xenUnifiedDomainInfoListPtr activeDomainList;
/* NUMA topology info cache */
int nbNodeCells;
int nbNodeCpus;
virDomainEventStatePtr domainEvents;
/* Location of config files, either /etc
* or /var/lib/xen */
const char *configDir;
# if WITH_XEN_INOTIFY
/* The inotify fd */
int inotifyFD;
int inotifyWatch;
int useXenConfigCache ;
xenUnifiedDomainInfoListPtr configInfoList;
# endif
/* For the 'xm' driver */
/* Primary config file name -> virDomainDef map */
virHashTablePtr configCache;
/* Domain name to config file name */
virHashTablePtr nameConfigMap;
/* So we don't refresh too often */
time_t lastRefresh;
};
typedef struct _xenUnifiedPrivate *xenUnifiedPrivatePtr;
char *xenDomainUsedCpus(virDomainPtr dom);
void xenUnifiedDomainInfoListFree(xenUnifiedDomainInfoListPtr info);
int xenUnifiedAddDomainInfo(xenUnifiedDomainInfoListPtr info,
int id, char *name,
unsigned char *uuid);
int xenUnifiedRemoveDomainInfo(xenUnifiedDomainInfoListPtr info,
int id, char *name,
unsigned char *uuid);
void xenUnifiedDomainEventDispatch (xenUnifiedPrivatePtr priv,
virDomainEventPtr event);
unsigned long xenUnifiedVersion(void);
int xenUnifiedGetMaxVcpus(virConnectPtr conn, const char *type);
void xenUnifiedLock(xenUnifiedPrivatePtr priv);
void xenUnifiedUnlock(xenUnifiedPrivatePtr priv);
#endif /* __VIR_XEN_UNIFIED_H__ */
|