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qemu: Support enabling migration caps unless a flag is used

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So far we were enabling specific migration capabilities when a
corresponding API flag is set. We need to generalize our code to be able
to enable some migration capabilities unless a particular API flag is
used.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This commit is contained in:
Jiri Denemark 2021-12-08 16:16:14 +01:00
parent 7826148a72
commit 4f9f3c5d13
1 changed files with 22 additions and 9 deletions
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31
src/qemu/qemu_migration_params.c
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@ -47,6 +47,11 @@ typedef enum {
QEMU_MIGRATION_PARAM_TYPE_STRING,
} qemuMigrationParamType;
typedef enum {
QEMU_MIGRATION_FLAG_REQUIRED,
QEMU_MIGRATION_FLAG_FORBIDDEN,
} qemuMigrationFlagMatch;
typedef struct _qemuMigrationParamValue qemuMigrationParamValue;
struct _qemuMigrationParamValue {
bool set;
@ -119,6 +124,7 @@ struct _qemuMigrationParamsAlwaysOnItem {
typedef struct _qemuMigrationParamsFlagMapItem qemuMigrationParamsFlagMapItem;
struct _qemuMigrationParamsFlagMapItem {
qemuMigrationFlagMatch match;
virDomainMigrateFlags flag;
qemuMigrationCapability cap;
int party; /* bit-wise OR of qemuMigrationParty */
@ -146,19 +152,23 @@ static const qemuMigrationParamsAlwaysOnItem qemuMigrationParamsAlwaysOn[] = {
/* Translation from virDomainMigrateFlags to qemuMigrationCapability. */
static const qemuMigrationParamsFlagMapItem qemuMigrationParamsFlagMap[] = {
{VIR_MIGRATE_RDMA_PIN_ALL,
{QEMU_MIGRATION_FLAG_REQUIRED,
VIR_MIGRATE_RDMA_PIN_ALL,
QEMU_MIGRATION_CAP_RDMA_PIN_ALL,
QEMU_MIGRATION_SOURCE | QEMU_MIGRATION_DESTINATION},
{VIR_MIGRATE_AUTO_CONVERGE,
{QEMU_MIGRATION_FLAG_REQUIRED,
VIR_MIGRATE_AUTO_CONVERGE,
QEMU_MIGRATION_CAP_AUTO_CONVERGE,
QEMU_MIGRATION_SOURCE},
{VIR_MIGRATE_POSTCOPY,
{QEMU_MIGRATION_FLAG_REQUIRED,
VIR_MIGRATE_POSTCOPY,
QEMU_MIGRATION_CAP_POSTCOPY,
QEMU_MIGRATION_SOURCE | QEMU_MIGRATION_DESTINATION},
{VIR_MIGRATE_PARALLEL,
{QEMU_MIGRATION_FLAG_REQUIRED,
VIR_MIGRATE_PARALLEL,
QEMU_MIGRATION_CAP_MULTIFD,
QEMU_MIGRATION_SOURCE | QEMU_MIGRATION_DESTINATION},
};
@ -553,13 +563,16 @@ qemuMigrationParamsFromFlags(virTypedParameterPtr params,
return NULL;
for (i = 0; i < G_N_ELEMENTS(qemuMigrationParamsFlagMap); i++) {
qemuMigrationCapability cap = qemuMigrationParamsFlagMap[i].cap;
const qemuMigrationParamsFlagMapItem *item = &qemuMigrationParamsFlagMap[i];
int match = 0;
if (qemuMigrationParamsFlagMap[i].party & party &&
flags & qemuMigrationParamsFlagMap[i].flag) {
if (item->match == QEMU_MIGRATION_FLAG_REQUIRED)
match = item->flag;
if (item->party & party && (flags & item->flag) == match) {
VIR_DEBUG("Enabling migration capability '%s'",
qemuMigrationCapabilityTypeToString(cap));
ignore_value(virBitmapSetBit(migParams->caps, cap));
qemuMigrationCapabilityTypeToString(item->cap));
ignore_value(virBitmapSetBit(migParams->caps, item->cap));
}
}