migration/multifd: Drop registered_yank

With a clear definition of p->c protocol, where we only set it up if the
channel is fully established (TLS or non-TLS), registered_yank boolean will
have equal meaning of "p->c != NULL".

Drop registered_yank by checking p->c instead.

Reviewed-by: Fabiano Rosas <farosas@suse.de>
Link: https://lore.kernel.org/r/20240222095301.171137-3-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>

diff --git a/migration/multifd.c b/migration/multifd.c
index 84a6b9e58f29bb321eb0e91b1c5ca868910b64fc..1d039a48408e56d485e8d3e30170dffb58082e0b 100644 (file)
--- a/migration/multifd.c
+++ b/migration/multifd.c
@@ -666,11 +666,11 @@ static int multifd_send_channel_destroy(QIOChannel *send)
 
 static bool multifd_send_cleanup_channel(MultiFDSendParams *p, Error **errp)
 {
-    if (p->registered_yank) {
+    if (p->c) {
         migration_ioc_unregister_yank(p->c);
+        multifd_send_channel_destroy(p->c);
+        p->c = NULL;
     }
-    multifd_send_channel_destroy(p->c);
-    p->c = NULL;
     qemu_sem_destroy(&p->sem);
     qemu_sem_destroy(&p->sem_sync);
     g_free(p->name);
@@ -950,7 +950,6 @@ static bool multifd_channel_connect(MultiFDSendParams *p,
     qio_channel_set_delay(ioc, false);
 
     migration_ioc_register_yank(ioc);
-    p->registered_yank = true;
     /* Setup p->c only if the channel is completely setup */
     p->c = ioc;
 

diff --git a/migration/multifd.h b/migration/multifd.h
index 8a1cad0996757cba5981701945dc289744383470..b3fe27ae93ab70b67fe4963b628a2a2cc0e7bb18 100644 (file)
--- a/migration/multifd.h
+++ b/migration/multifd.h
@@ -78,8 +78,6 @@ typedef struct {
     bool tls_thread_created;
     /* communication channel */
     QIOChannel *c;
-    /* is the yank function registered */
-    bool registered_yank;
     /* packet allocated len */
     uint32_t packet_len;
     /* guest page size */