[PATCH v6 7/9] migration: modify migration_channels_and_uri_compatible() to incorporate newer migration QAPI syntax

[Het Gala]

migration_channels_and_uri_compatible() check for transport mechanism
suitable for multifd migration gets executed when the caller calls old
uri syntax. It needs it to be run when using the mordern MigrateCHannel
QAPI syntax too.

After URI -> 'MigrateChannel' object conversion,
migration_channels_and_uri_compatible() ->
migration_channels_and_transport_compatible() passes object as argument
and checks for valid transport mechanism.

Suggested-by: Aravind Retnakaran <aravind.retnakaran@nutanix.com>
Signed-off-by: Het Gala <het.gala@nutanix.com>
---
 migration/migration.c | 25 ++++++++++++++-----------
 1 file changed, 14 insertions(+), 11 deletions(-)

diff --git a/migration/migration.c b/migration/migration.c
index a5ca9e0e27..98b797679b 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -103,17 +103,20 @@ static bool migration_needs_multiple_sockets(void)
     return migrate_multifd() || migrate_postcopy_preempt();
 }
 
-static bool uri_supports_multi_channels(const char *uri)
+static bool transport_supports_multi_channels(SocketAddress *saddr)
 {
-    return strstart(uri, "tcp:", NULL) || strstart(uri, "unix:", NULL) ||
-           strstart(uri, "vsock:", NULL);
+    return saddr->type == SOCKET_ADDRESS_TYPE_INET ||
+           saddr->type == SOCKET_ADDRESS_TYPE_UNIX ||
+           saddr->type == SOCKET_ADDRESS_TYPE_VSOCK;
 }
 
 static bool
-migration_channels_and_uri_compatible(const char *uri, Error **errp)
+migration_channels_and_transport_compatible(MigrationAddress *addrs,
+                                            Error **errp)
 {
     if (migration_needs_multiple_sockets() &&
-        !uri_supports_multi_channels(uri)) {
+        (addrs->transport == MIGRATION_ADDRESS_TYPE_SOCKET) &&
+        !transport_supports_multi_channels(&addrs->u.socket)) {
         error_setg(errp, "Migration requires multi-channel URIs (e.g. tcp)");
         return false;
     }
@@ -480,12 +483,12 @@ static void qemu_start_incoming_migration(const char 
*uri, bool has_channels,
         return;
     }
 
-    /* URI is not suitable for migration? */
-    if (!migration_channels_and_uri_compatible(uri, errp)) {
+    if (uri && !migrate_uri_parse(uri, &channel, errp)) {
         return;
     }
 
-    if (uri && !migrate_uri_parse(uri, &channel, errp)) {
+    /* transport mechanism not suitable for migration? */
+    if (!migration_channels_and_transport_compatible(channel, errp)) {
         return;
     }
 
@@ -1708,12 +1711,12 @@ void qmp_migrate(const char *uri, bool has_channels,
         return;
     }
 
-    /* URI is not suitable for migration? */
-    if (!migration_channels_and_uri_compatible(uri, errp)) {
+    if (!migrate_uri_parse(uri, &channel, errp)) {
         return;
     }
 
-    if (!migrate_uri_parse(uri, &channel, errp)) {
+    /* transport mechanism not suitable for migration? */
+    if (!migration_channels_and_transport_compatible(channel, errp)) {
         return;
     }
 
-- 
2.22.3