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authorJaehoon Kim <jhkim@linux.ibm.com>2025-06-11 15:56:10 -0500
committerPeter Xu <peterx@redhat.com>2025-06-23 16:03:59 -0400
commit8f87c87eca4bc62258251eade7016f8a084b0988 (patch)
treef46351735d55dc895348eb4dff4649631cc944ab
parent0310d594d98b39f9dde79b87fd8b0ad16e7c5459 (diff)
downloadfocaccia-qemu-8f87c87eca4bc62258251eade7016f8a084b0988.tar.gz
focaccia-qemu-8f87c87eca4bc62258251eade7016f8a084b0988.zip
migration: Support fd-based socket address in cpr_transfer_input
Extend cpr_transfer_input to handle SOCKET_ADDRESS_TYPE_FD alongside
SOCKET_ADDRESS_TYPE_UNIX. This change supports the use of pre-listened
socket file descriptors for cpr migration channels.

This change is particularly useful in qtest environments, where the
socket may be created externally and passed via fd.

Reviewed-by: Jason J. Herne <jjherne@linux.ibm.com>
Reviewed-by: Steve Sistare <steven.sistare@oracle.com>
Signed-off-by: Jaehoon Kim <jhkim@linux.ibm.com>
Link: https://lore.kernel.org/r/20250611205610.147008-3-jhkim@linux.ibm.com
Signed-off-by: Peter Xu <peterx@redhat.com>
-rw-r--r--migration/cpr-transfer.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/migration/cpr-transfer.c b/migration/cpr-transfer.c
index e1f140359c..00371d17c3 100644
--- a/migration/cpr-transfer.c
+++ b/migration/cpr-transfer.c
@@ -46,7 +46,8 @@ QEMUFile *cpr_transfer_input(MigrationChannel *channel, Error **errp)
     MigrationAddress *addr = channel->addr;
 
     if (addr->transport == MIGRATION_ADDRESS_TYPE_SOCKET &&
-        addr->u.socket.type == SOCKET_ADDRESS_TYPE_UNIX) {
+        (addr->u.socket.type == SOCKET_ADDRESS_TYPE_UNIX ||
+            addr->u.socket.type == SOCKET_ADDRESS_TYPE_FD)) {
 
         g_autoptr(QIOChannelSocket) sioc = NULL;
         SocketAddress *saddr = &addr->u.socket;
@@ -60,7 +61,9 @@ QEMUFile *cpr_transfer_input(MigrationChannel *channel, Error **errp)
 
         sioc = qio_net_listener_wait_client(listener);
         ioc = QIO_CHANNEL(sioc);
-        trace_cpr_transfer_input(addr->u.socket.u.q_unix.path);
+        trace_cpr_transfer_input(
+            addr->u.socket.type == SOCKET_ADDRESS_TYPE_UNIX ?
+            addr->u.socket.u.q_unix.path : addr->u.socket.u.fd.str);
         qio_channel_set_name(ioc, "cpr-in");
         return qemu_file_new_input(ioc);