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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 4/8] [xen] Domain Groups: VMM domain group framework
xen: 1. Create generic support data structures for group information. 2. Add domgrpctl interface (similar to domctl). diff -r ecb6cd61a9cf xen/common/Makefile
--- a/xen/common/Makefile Tue Feb 20 12:27:03 2007 +0000
+++ b/xen/common/Makefile Tue Feb 20 12:59:11 2007 -0500
@@ -1,7 +1,9 @@ obj-y += acm_ops.o
obj-y += acm_ops.o
obj-y += bitmap.o
obj-y += domctl.o
+obj-y += domgrpctl.o
obj-y += domain.o
+obj-y += domgrp.o
obj-y += event_channel.o
obj-y += grant_table.o
obj-y += kernel.o
diff -r ecb6cd61a9cf xen/common/domain.c
--- a/xen/common/domain.c Tue Feb 20 12:27:03 2007 +0000
+++ b/xen/common/domain.c Tue Feb 20 12:59:11 2007 -0500
@@ -11,6 +11,7 @@
#include <xen/errno.h>
#include <xen/sched.h>
#include <xen/domain.h>
+#include <xen/domgrp.h>
#include <xen/mm.h>
#include <xen/event.h>
#include <xen/time.h>
@@ -51,6 +52,7 @@ struct domain *alloc_domain(domid_t domi
memset(d, 0, sizeof(*d));
d->domain_id = domid;
+ d->group_id = INVAL_GROUP_ID;
atomic_set(&d->refcnt, 1);
spin_lock_init(&d->big_lock);
spin_lock_init(&d->page_alloc_lock);
@@ -184,6 +186,8 @@ struct domain *domain_create(domid_t dom
d->next_in_hashbucket = domain_hash[DOMAIN_HASH(domid)];
domain_hash[DOMAIN_HASH(domid)] = d;
write_unlock(&domlist_lock);
+
+ add_dom_to_grp(d, NULL_GROUP_ID);
}
return d;
@@ -288,6 +292,8 @@ void domain_shutdown(struct domain *d, u
{
struct vcpu *v;
+ del_dom_from_grp(d);
+
if ( d->domain_id == 0 )
dom0_shutdown(reason);
@@ -329,6 +335,8 @@ void domain_destroy(struct domain *d)
old = atomic_compareandswap(old, new, &d->refcnt);
if ( _atomic_read(old) != 0 )
return;
+
+ del_dom_from_grp(d);
/* Delete from task list and task hashtable. */
write_lock(&domlist_lock);
diff -r ecb6cd61a9cf xen/common/domctl.c
--- a/xen/common/domctl.c Tue Feb 20 12:27:03 2007 +0000
+++ b/xen/common/domctl.c Tue Feb 20 12:59:11 2007 -0500
@@ -12,6 +12,7 @@
#include <xen/mm.h>
#include <xen/sched.h>
#include <xen/domain.h>
+#include <xen/domgrp.h>
#include <xen/event.h>
#include <xen/domain_page.h>
#include <xen/trace.h>
@@ -86,8 +87,10 @@ void getdomaininfo(struct domain *d, str
u64 cpu_time = 0;
int flags = XEN_DOMINF_blocked;
struct vcpu_runstate_info runstate;
-
+ struct domain_group *grp;
+
info->domain = d->domain_id;
+ info->group = d->group_id;
info->nr_online_vcpus = 0;
/*
@@ -130,6 +133,9 @@ void getdomaininfo(struct domain *d, str
info->shared_info_frame = mfn_to_gmfn(d, __pa(d->shared_info)>>PAGE_SHIFT);
memcpy(info->handle, d->handle, sizeof(xen_domain_handle_t));
+ grp = find_grp_by_id(info->group);
+ if (grp)
+ memcpy(info->dg_handle, grp->handle,
sizeof(xen_domain_group_handle_t));
}
static unsigned int default_vcpu0_location(void)
@@ -250,6 +256,7 @@ long do_domctl(XEN_GUEST_HANDLE(xen_domc
{
struct domain *d = get_domain_by_id(op->domain);
ret = -ESRCH;
+
if ( d != NULL )
{
ret = -EINVAL;
@@ -267,6 +274,7 @@ long do_domctl(XEN_GUEST_HANDLE(xen_domc
{
struct domain *d = get_domain_by_id(op->domain);
ret = -ESRCH;
+
if ( d != NULL )
{
ret = -EINVAL;
@@ -404,6 +412,7 @@ long do_domctl(XEN_GUEST_HANDLE(xen_domc
{
struct domain *d = get_domain_by_id(op->domain);
ret = -ESRCH;
+
if ( d != NULL )
{
ret = -EINVAL;
diff -r ecb6cd61a9cf xen/include/public/domctl.h
--- a/xen/include/public/domctl.h Tue Feb 20 12:27:03 2007 +0000
+++ b/xen/include/public/domctl.h Tue Feb 20 12:59:11 2007 -0500
@@ -67,6 +67,7 @@ struct xen_domctl_getdomaininfo {
struct xen_domctl_getdomaininfo {
/* OUT variables. */
domid_t domain; /* Also echoed in domctl.domain */
+ dgid_t group;
/* Domain is scheduled to die. */
#define _XEN_DOMINF_dying 0
#define XEN_DOMINF_dying (1U<<_XEN_DOMINF_dying)
@@ -100,6 +101,7 @@ struct xen_domctl_getdomaininfo {
uint32_t max_vcpu_id; /* Maximum VCPUID in use by this domain. */
uint32_t ssidref;
xen_domain_handle_t handle;
+ xen_domain_group_handle_t dg_handle;
};
typedef struct xen_domctl_getdomaininfo xen_domctl_getdomaininfo_t;
DEFINE_XEN_GUEST_HANDLE(xen_domctl_getdomaininfo_t);
diff -r ecb6cd61a9cf xen/include/public/xen.h
--- a/xen/include/public/xen.h Tue Feb 20 12:27:03 2007 +0000
+++ b/xen/include/public/xen.h Tue Feb 20 12:59:11 2007 -0500
@@ -80,6 +80,7 @@
#define __HYPERVISOR_sysctl 35
#define __HYPERVISOR_domctl 36
#define __HYPERVISOR_kexec_op 37
+#define __HYPERVISOR_domgrpctl 38
/* Architecture-specific hypercall definitions. */
#define __HYPERVISOR_arch_0 48
@@ -295,6 +296,8 @@ DEFINE_XEN_GUEST_HANDLE(mmuext_op_t);
#ifndef __ASSEMBLY__
typedef uint16_t domid_t;
+
+typedef uint16_t dgid_t;
/* Domain ids >= DOMID_FIRST_RESERVED cannot be used for ordinary domains. */
#define DOMID_FIRST_RESERVED (0x7FF0U)
@@ -572,6 +575,8 @@ typedef struct dom0_vga_console_info {
typedef uint8_t xen_domain_handle_t[16];
+typedef uint8_t xen_domain_group_handle_t[16];
+
/* Turn a plain number into a C unsigned long constant. */
#define __mk_unsigned_long(x) x ## UL
#define mk_unsigned_long(x) __mk_unsigned_long(x)
diff -r ecb6cd61a9cf xen/include/xen/hypercall.h
--- a/xen/include/xen/hypercall.h Tue Feb 20 12:27:03 2007 +0000
+++ b/xen/include/xen/hypercall.h Tue Feb 20 12:59:11 2007 -0500
@@ -10,6 +10,7 @@
#include <xen/time.h>
#include <public/xen.h>
#include <public/domctl.h>
+#include <public/domgrpctl.h>
#include <public/sysctl.h>
#include <public/platform.h>
#include <public/acm_ops.h>
@@ -33,6 +34,10 @@ extern long
extern long
do_domctl(
XEN_GUEST_HANDLE(xen_domctl_t) u_domctl);
+
+extern long
+do_domgrpctl(
+ XEN_GUEST_HANDLE(xen_domgrpctl_t) u_domgrpctl);
extern long
do_sysctl(
diff -r ecb6cd61a9cf xen/include/xen/sched.h
--- a/xen/include/xen/sched.h Tue Feb 20 12:27:03 2007 +0000
+++ b/xen/include/xen/sched.h Tue Feb 20 12:59:11 2007 -0500
@@ -9,6 +9,7 @@
#include <xen/shared.h>
#include <public/xen.h>
#include <public/domctl.h>
+#include <public/domgrpctl.h>
#include <public/vcpu.h>
#include <xen/time.h>
#include <xen/timer.h>
@@ -25,6 +26,7 @@ DEFINE_XEN_GUEST_HANDLE(vcpu_runstate_in
extern unsigned long volatile jiffies;
extern rwlock_t domlist_lock;
+extern rwlock_t domgrplist_lock;
/* A global pointer to the initial domain (DOM0). */
extern struct domain *dom0;
@@ -124,9 +126,13 @@ struct domain
{
domid_t domain_id;
+ dgid_t group_id; /* TODO: replace struct group ptr */
+ struct list_head member;
+
shared_info_t *shared_info; /* shared data area */
spinlock_t big_lock;
+ spinlock_t *grp_big_lock;
spinlock_t page_alloc_lock; /* protects all the following fields */
struct list_head page_list; /* linked list, of size tot_pages */
@@ -193,6 +199,21 @@ struct domain
/* OProfile support. */
struct xenoprof *xenoprof;
int32_t time_offset_seconds;
+};
+
+struct domain_group
+{
+ dgid_t group_id;
+ uint16_t size;
+
+ struct list_head groups;
+
+ struct list_head member_list;
+
+ spinlock_t grp_big_lock;
+ rwlock_t member_list_lock;
+
+ xen_domain_group_handle_t handle;
};
struct domain_setup_info
diff -r ecb6cd61a9cf xen/common/domgrp.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/xen/common/domgrp.c Tue Feb 20 12:59:11 2007 -0500
@@ -0,0 +1,317 @@
+/******************************************************************************
+ * domgrp.c
+ *
+ * Generic domain group-handling functions.
+ *
+ * Author: Chris Bookholt (hap10@xxxxxxxxxxxxxx)
+ */
+
+#include <xen/sched.h>
+#include <xen/list.h>
+#include <xen/xmalloc.h>
+#include <public/domgrpctl.h>
+
+DEFINE_RWLOCK(domgrplist_lock);
+struct list_head domgrplist;
+
+#define SERIALIZE_LINKED_LIST(op_name, list_name) \
+ read_lock(&grp->op_name##_lock); \
+ memset(&info->op_name, 0, sizeof(domid_t)*MAX_GROUP_SIZE); \
+ if (!list_empty(&grp->op_name)) { \
+ i = 0; \
+ list_for_each_entry(dom, &grp->op_name, list_name) { \
+ info->op_name[i] = dom->domain_id; \
+ i++; \
+ } \
+ } else \
+ info->op_name[i] = NULL_GROUP_ID; \
+ read_unlock(&grp->op_name##_lock);
+
+void get_grp_info(struct domain_group *grp, xen_domgrpctl_getgrpinfo_t * info)
+{
+ struct domain *dom;
+ uint16_t i = 0;
+
+ info->dgid = grp->group_id;
+ info->size = grp->size;
+
+ SERIALIZE_LINKED_LIST(member_list, member);
+
+ memcpy(info->handle, grp->handle, sizeof(xen_domain_group_handle_t));
+}
+
+struct domain_group *alloc_domain_group(void)
+{
+ struct domain_group *grp = NULL;
+
+ if ((grp = xmalloc(struct domain_group)) != NULL)
+ memset(grp, 0, sizeof(*grp));
+
+ return grp;
+}
+
+struct domain_group *find_grp_by_id(dgid_t dgid)
+{
+ struct domain_group *grp;
+
+ read_lock(&domgrplist_lock);
+ list_for_each_entry(grp, &domgrplist, groups)
+ if (grp->group_id == dgid)
+ goto out;
+ grp = NULL;
+ out:
+ read_unlock(&domgrplist_lock);
+ return grp;
+}
+
+uint16_t get_new_group_id(void)
+{
+ static DEFINE_SPINLOCK(domgrpcnt_lock);
+ static dgid_t group_counter = 1;
+ dgid_t ret;
+
+ if (group_counter < NULL_GROUP_ID - 1) {
+ spin_lock(&domgrpcnt_lock);
+ ret = group_counter++;
+ spin_unlock(&domgrpcnt_lock);
+ } else
+ ret = NULL_GROUP_ID;
+ return ret;
+}
+
+struct domain_group *domain_group_create(dgid_t dgid)
+{
+ struct domain_group *grp = NULL, *tail;
+
+ grp = alloc_domain_group();
+ if (!grp)
+ goto out;
+
+ grp->group_id = dgid;
+ grp->size = 0;
+ if (dgid == 0)
+ memset(grp->handle, 0, sizeof(xen_domain_group_handle_t));
+ else if (dgid == NULL_GROUP_ID)
+ memset(grp->handle, 0xFF, sizeof(xen_domain_group_handle_t));
+
+ /* init group's lists */
+ INIT_LIST_HEAD(&grp->member_list);
+
+ /* init group's locks */
+ spin_lock_init(&grp->grp_big_lock);
+ rwlock_init(&grp->member_list_lock);
+
+ /* add new group to domgrplist *
+ * TODO: This is a candidate for optimization. Could
+ * be optimized by maintaining a ptr to the tail, but
+ * list size is small, so search isn't expensive */
+ if (dgid != 0 && dgid != NULL_GROUP_ID) {
+ tail = find_grp_by_id(NULL_GROUP_ID);
+ write_lock(&domgrplist_lock);
+ list_add_tail(&grp->groups, &tail->groups);
+ write_unlock(&domgrplist_lock);
+ } else {
+ write_lock(&domgrplist_lock);
+ list_add_tail(&grp->groups, &domgrplist);
+ write_unlock(&domgrplist_lock);
+ }
+
+ out:
+ return grp;
+}
+
+int dom_in_member_list(domid_t domid, struct domain_group *grp)
+{
+ struct domain *dom;
+ int ret = 0;
+
+ if (grp == NULL) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ read_lock(&grp->member_list_lock);
+ list_for_each_entry(dom, &grp->member_list, member) {
+ if (dom->domain_id == domid) {
+ ret = 1;
+ break;
+ }
+ }
+ read_unlock(&grp->member_list_lock);
+ out:
+ return ret;
+}
+
+#define RM_DOM_FROM_LIST(list_name, entry) \
+ write_lock(&grp->list_name##_lock); \
+ if (!list_empty(&grp->list_name)) \
+ list_del(&dom->entry); \
+ write_unlock(&grp->list_name##_lock);
+
+void del_dom_from_grp(struct domain *dom)
+{
+ struct domain_group *grp;
+
+ grp = find_grp_by_id(dom->group_id);
+
+ if (grp == NULL)
+ goto out;
+
+ if (dom_in_member_list(dom->domain_id, grp) <= 0)
+ goto out;
+
+ RM_DOM_FROM_LIST(member_list, member);
+ dom->group_id = INVAL_GROUP_ID;
+ grp->size--;
+
+ out:
+ return;
+}
+
+int add_dom_to_grp(struct domain *dom, dgid_t dgid)
+{
+ struct domain_group *grp = NULL;
+ int ret = 0;
+
+ grp = find_grp_by_id(dgid);
+ if (grp == NULL) {
+ ret = -ESRCH;
+ goto out;
+ }
+
+ if (grp->size >= MAX_GROUP_SIZE) {
+ ret = -EPERM;
+ goto out;
+ }
+
+ /* skip it if dom is already a member */
+ if (dom_in_member_list(dom->domain_id, grp))
+ goto out;
+
+ /* remove dom from old group */
+ if (dom->group_id != INVAL_GROUP_ID)
+ del_dom_from_grp(dom);
+
+ /* add dom to end of new group list */
+ write_lock(&grp->member_list_lock);
+ list_add_tail(&dom->member, &grp->member_list);
+ write_unlock(&grp->member_list_lock);
+
+ dom->group_id = dgid;
+ dom->grp_big_lock = &grp->grp_big_lock;
+
+ grp->size++;
+ out:
+ return ret;
+}
+
+int pause_grp(dgid_t dgid)
+{
+ int ret = 0;
+ struct domain *member;
+ struct domain_group *grp;
+
+ if (dgid == 0) {
+ ret = -EPERM;
+ goto out;
+ }
+
+ grp = find_grp_by_id(dgid);
+
+ if (grp == NULL) {
+ ret = -ESRCH;
+ goto out;
+ }
+
+ spin_lock_recursive(&grp->grp_big_lock);
+ read_lock(&grp->member_list_lock);
+ /* could ignore interupts during this loop to increase atomicity */
+ list_for_each_entry(member, &grp->member_list, member) {
+ if (member != current->domain
+ && member->domain_id != 0)
+ domain_pause_by_systemcontroller
+ (member);
+ }
+ read_unlock(&grp->member_list_lock);
+ spin_unlock_recursive(&grp->grp_big_lock);
+ out:
+ return ret;
+}
+
+int unpause_grp(dgid_t dgid)
+{
+ int ret = 0;
+ struct domain *member;
+ struct domain_group *grp;
+
+ if (dgid == 0) {
+ ret = -EPERM;
+ goto out;
+ }
+
+ grp = find_grp_by_id(dgid);
+
+ if (grp == NULL) {
+ ret = -ESRCH;
+ goto out;
+ }
+
+ spin_lock_recursive(&grp->grp_big_lock);
+ read_lock(&grp->member_list_lock);
+ /* could ignore interupts during this loop to increase atomicity */
+ list_for_each_entry(member, &grp->member_list, member) {
+ if (member != current->domain &&
+ member->domain_id != 0 &&
+ test_bit(_VCPUF_initialised,
+ &member->vcpu[0]->vcpu_flags))
+ domain_unpause_by_systemcontroller
+ (member);
+ }
+ read_unlock(&grp->member_list_lock);
+ spin_unlock_recursive(&grp->grp_big_lock);
+ out:
+ return ret;
+}
+
+int domain_group_destroy(dgid_t dgid)
+{
+ int ret = 0;
+ struct domain_group *grp;
+
+ grp = find_grp_by_id(dgid);
+ if (grp == NULL) {
+ ret = -ESRCH;
+ goto out;
+ }
+
+ if (grp->size != 0) {
+ ret = -EPERM;
+ printk(KERN_INFO "refusing to destroy non-emtpry group %d\n",
grp->group_id);
+ goto out;
+ }
+
+ write_lock(&domgrplist_lock);
+ list_del(&grp->groups);
+ write_unlock(&domgrplist_lock);
+
+ xfree(grp);
+ out:
+ return ret;
+}
+
+int init_domain_groups(void)
+{
+ struct domain_group *grp0, *nullgrp;
+ int ret = 0;
+ INIT_LIST_HEAD(&domgrplist);
+
+ /* order matters for creation of default groups:
+ * create default groups in order of ascending dgid so they
+ * are added to the group list in the expected order */
+ grp0 = domain_group_create(0);
+ nullgrp = domain_group_create(NULL_GROUP_ID);
+
+ if (!grp0 || !nullgrp)
+ ret = -ENOMEM;
+ return ret;
+}
diff -r ecb6cd61a9cf xen/common/domgrpctl.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/xen/common/domgrpctl.c Tue Feb 20 12:59:11 2007 -0500
@@ -0,0 +1,134 @@
+/******************************************************************************
+ * domgrpctl.c
+ *
+ * Domain group management operations. For use by node control stack.
+ *
+ * Author: Chris Bookholt (hap10@xxxxxxxxxxxxxx)
+ */
+
+#include <xen/sched.h>
+#include <xen/domgrp.h>
+#include <xen/guest_access.h>
+#include <public/domgrpctl.h>
+#include <asm/current.h>
+
+long do_domgrpctl(XEN_GUEST_HANDLE(xen_domgrpctl_t) u_domgrpctl)
+{
+ long ret = 0;
+ struct xen_domgrpctl curop, *op = &curop;
+ static DEFINE_SPINLOCK(domgrpctl_lock);
+ struct domain_group *grp;
+ dgid_t dgid;
+
+ if (!IS_PRIV(current->domain)) {
+ ret = -EPERM;
+ goto out;
+ }
+
+ if (copy_from_guest(op, u_domgrpctl, 1)) {
+ ret = -EFAULT;
+ goto out;
+ }
+
+ if (op->interface_version != XEN_DOMGRPCTL_INTERFACE_VERSION) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ spin_lock(&domgrpctl_lock);
+
+ switch (op->cmd) {
+
+ case XEN_DOMGRPCTL_getgrpinfo:
+ {
+ read_lock(&domgrplist_lock);
+ ret = -ESRCH;
+ dgid = op->u.get_grp_info.dgid;
+
+ list_for_each_entry(grp, &domgrplist, groups) {
+ if (grp->group_id >= dgid) {
+ ret = 0;
+ break;
+ }
+ }
+ if (ret)
+ goto getgrpinfo_out;
+
+ get_grp_info(grp, &op->u.get_grp_info);
+
+ if (copy_to_guest(u_domgrpctl, op, 1))
+ ret = -EFAULT;
+
+ getgrpinfo_out:
+ read_unlock(&domgrplist_lock);
+ break;
+ }
+
+ case XEN_DOMGRPCTL_creategrp:
+ {
+ dgid = get_new_group_id();
+ if (dgid == NULL_GROUP_ID) {
+ ret = -EINVAL;
+ break;
+ }
+
+ grp = domain_group_create(dgid);
+ if (grp == NULL) {
+ ret = -ENOMEM;
+ break;
+ }
+
+ memcpy(grp->handle, op->u.create_grp.handle,
+ sizeof(xen_domain_group_handle_t));
+
+ op->u.create_grp.dgid = grp->group_id;
+ if (copy_to_guest(u_domgrpctl, op, 1))
+ ret = -EFAULT;
+
+ break;
+ }
+
+ case XEN_DOMGRPCTL_joingrp:
+ {
+ domid_t domid;
+ struct domain *dom;
+
+ domid = op->u.join_grp.domid;
+ dgid = op->u.join_grp.dgid;
+
+ dom = get_domain_by_id(domid);
+ if (dom == NULL)
+ ret = -ESRCH;
+ else
+ ret = add_dom_to_grp(dom, dgid);
+ put_domain(dom);
+
+ break;
+ }
+
+ case XEN_DOMGRPCTL_pausegrp:
+ {
+ ret = pause_grp(op->u.pause_grp.dgid);
+ break;
+ }
+
+ case XEN_DOMGRPCTL_unpausegrp:
+ {
+ ret = unpause_grp(op->u.unpause_grp.dgid);
+ break;
+ }
+
+ case XEN_DOMGRPCTL_destroygrp:
+ {
+ ret = domain_group_destroy(op->u.destroy_grp.dgid);
+ break;
+ }
+
+ default:
+ ret = -EINVAL;
+ }
+
+ spin_unlock(&domgrpctl_lock);
+ out:
+ return ret;
+}
diff -r ecb6cd61a9cf xen/include/public/domgrpctl.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/xen/include/public/domgrpctl.h Tue Feb 20 12:59:11 2007 -0500
@@ -0,0 +1,86 @@
+/******************************************************************************
+ * domgrpctl.h
+ *
+ * Domain group management operations. For use by node control stack.
+ *
+ * Author: Chris Bookholt (hap10@xxxxxxxxxxxxxx)
+ */
+
+#ifndef __XEN_PUBLIC_DOMGRPCTL_H__
+#define __XEN_PUBLIC_DOMGRPCTL_H__
+
+#if !defined(__XEN__) && !defined(__XEN_TOOLS__)
+#error "domgrpctl operations are intended for use by node control tools only"
+#endif
+
+#include "xen.h"
+
+#define XEN_DOMGRPCTL_INTERFACE_VERSION 0x00000001
+
+#define MAX_GROUP_SIZE 24
+#define NULL_GROUP_ID (0x7FFFU)
+#define INVAL_GROUP_ID (0xFFFFU)
+
+#define XEN_DOMGRPCTL_creategrp 1
+struct xen_domgrpctl_creategrp {
+ dgid_t dgid;
+ xen_domain_group_handle_t handle;
+};
+typedef struct xen_domgrpctl_creategrp xen_domgrpctl_creategrp_t;
+DEFINE_XEN_GUEST_HANDLE(xen_domgrpctl_creategrp_t);
+
+#define XEN_DOMGRPCTL_joingrp 2
+struct xen_domgrpctl_joingrp {
+ domid_t domid;
+ dgid_t dgid;
+};
+typedef struct xen_domgrpctl_joingrp xen_domgrpctl_joingrp_t;
+DEFINE_XEN_GUEST_HANDLE(xen_domgrpctl_joingrp_t);
+
+#define XEN_DOMGRPCTL_pausegrp 3
+struct xen_domgrpctl_pausegrp {
+ dgid_t dgid;
+};
+typedef struct xen_domgrpctl_pausegrp xen_domgrpctl_pausegrp_t;
+DEFINE_XEN_GUEST_HANDLE(xen_domgrpctl_pausegrp_t);
+
+#define XEN_DOMGRPCTL_unpausegrp 4
+struct xen_domgrpctl_unpausegrp {
+ dgid_t dgid;
+};
+typedef struct xen_domgrpctl_unpausegrp xen_domgrpctl_unpausegrp_t;
+DEFINE_XEN_GUEST_HANDLE(xen_domgrpctl_unpausegrp_t);
+
+#define XEN_DOMGRPCTL_destroygrp 5
+struct xen_domgrpctl_destroygrp {
+ dgid_t dgid;
+};
+typedef struct xen_domgrpctl_destroygrp xen_domgrpctl_destroygrp_t;
+DEFINE_XEN_GUEST_HANDLE(xen_domgrpctl_destroygrp_t);
+
+#define XEN_DOMGRPCTL_getgrpinfo 6
+struct xen_domgrpctl_getgrpinfo {
+ dgid_t dgid;
+ uint16_t size;
+ domid_t member_list[MAX_GROUP_SIZE];
+ xen_domain_group_handle_t handle;
+};
+typedef struct xen_domgrpctl_getgrpinfo xen_domgrpctl_getgrpinfo_t;
+DEFINE_XEN_GUEST_HANDLE(xen_domgrpctl_getgrpinfo_t);
+
+struct xen_domgrpctl {
+ uint32_t cmd;
+ uint32_t interface_version;
+ union {
+ struct xen_domgrpctl_creategrp create_grp;
+ struct xen_domgrpctl_joingrp join_grp;
+ struct xen_domgrpctl_pausegrp pause_grp;
+ struct xen_domgrpctl_unpausegrp unpause_grp;
+ struct xen_domgrpctl_destroygrp destroy_grp;
+ struct xen_domgrpctl_getgrpinfo get_grp_info;
+ } u;
+};
+typedef struct xen_domgrpctl xen_domgrpctl_t;
+DEFINE_XEN_GUEST_HANDLE(xen_domgrpctl_t);
+
+#endif /* __XEN_PUBLIC_DOMGRPCTL_H__ */
diff -r ecb6cd61a9cf xen/include/xen/domgrp.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/xen/include/xen/domgrp.h Tue Feb 20 12:59:11 2007 -0500
@@ -0,0 +1,36 @@
+/******************************************************************************
+ * domgrp.h
+ *
+ * Generic domain group-handling functions.
+ *
+ * Author: Chris Bookholt (hap10@xxxxxxxxxxxxxx)
+ */
+
+#ifndef __XEN_DOM_GROUP_H__
+#define __XEN_DOM_GROUP_H__
+
+#include <public/domgrpctl.h>
+
+extern struct list_head domgrplist;
+
+void get_grp_info(struct domain_group *grp, xen_domgrpctl_getgrpinfo_t * info);
+
+struct domain_group *find_grp_by_id(dgid_t dgid);
+
+uint16_t get_new_group_id(void);
+
+struct domain_group *domain_group_create(dgid_t dgid);
+
+int del_dom_from_grp(struct domain *old_dom);
+
+int add_dom_to_grp(struct domain *dom, dgid_t dgid);
+
+int pause_grp(dgid_t dgid);
+
+int unpause_grp(dgid_t dgid);
+
+int domain_group_destroy(dgid_t dgid);
+
+int init_domain_groups(void);
+
+#endif /* __XEN_DOM_GROUP_H__ */
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