[PATCH] lib: Prohibit parallel connections with tunneled migration

[Jim Fehlig <jfehlig@xxxxxxxx>]

As discussed on the developer list, parallel migration connections
are not compatible with tunneled migration

https://www.redhat.com/archives/libvir-list/2020-January/msg00463.html

Prohibit the concurrent use of parallel and tunneled migration options.

Signed-off-by: Jim Fehlig <jfehlig@xxxxxxxx>
---

I added the check to all migration entry points except virDomainMigrate3,
where the p2p and tunneled options are already prohibitied.

 src/libvirt-domain.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/src/libvirt-domain.c b/src/libvirt-domain.c
index 4074397b30..b910ba6b4d 100644
--- a/src/libvirt-domain.c
+++ b/src/libvirt-domain.c
@@ -3546,6 +3546,10 @@ virDomainMigrate(virDomainPtr domain,
                              VIR_MIGRATE_NON_SHARED_INC,
                              error);
 
+    VIR_EXCLUSIVE_FLAGS_GOTO(VIR_MIGRATE_TUNNELLED,
+                             VIR_MIGRATE_PARALLEL,
+                             error);
+
     if (flags & VIR_MIGRATE_OFFLINE) {
         if (!VIR_DRV_SUPPORTS_FEATURE(domain->conn->driver, domain->conn,
                                       VIR_DRV_FEATURE_MIGRATION_OFFLINE)) {
@@ -3701,6 +3705,10 @@ virDomainMigrate2(virDomainPtr domain,
                              VIR_MIGRATE_NON_SHARED_INC,
                              error);
 
+    VIR_EXCLUSIVE_FLAGS_GOTO(VIR_MIGRATE_TUNNELLED,
+                             VIR_MIGRATE_PARALLEL,
+                             error);
+
     if (flags & VIR_MIGRATE_OFFLINE) {
         if (!VIR_DRV_SUPPORTS_FEATURE(domain->conn->driver, domain->conn,
                                       VIR_DRV_FEATURE_MIGRATION_OFFLINE)) {
@@ -4087,6 +4095,10 @@ virDomainMigrateToURI(virDomainPtr domain,
     virCheckReadOnlyGoto(domain->conn->flags, error);
     virCheckNonNullArgGoto(duri, error);
 
+    VIR_EXCLUSIVE_FLAGS_GOTO(VIR_MIGRATE_TUNNELLED,
+                             VIR_MIGRATE_PARALLEL,
+                             error);
+
     if (virDomainMigrateUnmanagedCheckCompat(domain, flags) < 0)
         goto error;
 
@@ -4159,6 +4171,10 @@ virDomainMigrateToURI2(virDomainPtr domain,
     virCheckDomainReturn(domain, -1);
     virCheckReadOnlyGoto(domain->conn->flags, error);
 
+    VIR_EXCLUSIVE_FLAGS_GOTO(VIR_MIGRATE_TUNNELLED,
+                             VIR_MIGRATE_PARALLEL,
+                             error);
+
     if (virDomainMigrateUnmanagedCheckCompat(domain, flags) < 0)
         goto error;
 
@@ -4232,6 +4248,10 @@ virDomainMigrateToURI3(virDomainPtr domain,
     virCheckDomainReturn(domain, -1);
     virCheckReadOnlyGoto(domain->conn->flags, error);
 
+    VIR_EXCLUSIVE_FLAGS_GOTO(VIR_MIGRATE_TUNNELLED,
+                             VIR_MIGRATE_PARALLEL,
+                             error);
+
     if (virDomainMigrateUnmanagedCheckCompat(domain, flags) < 0)
         goto error;
 
-- 
2.24.1