Helper to say if we are doing a migration over rdma.

Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
---
 migration/migration.h | 2 ++
 migration/options.h   | 1 +
 migration/migration.c | 1 +
 migration/options.c   | 7 +++++++
 migration/rdma.c      | 4 +++-
 5 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/migration/migration.h b/migration/migration.h
index 972597f4de..4543e36081 100644
--- a/migration/migration.h
+++ b/migration/migration.h
@@ -463,6 +463,8 @@ struct MigrationState {
      * switchover has been received.
      */
     bool switchover_acked;
+    /* Is this a rdma migration */
+    bool rdma_migration;
 };
 
 void migrate_set_state(int *state, int old_state, int new_state);
diff --git a/migration/options.h b/migration/options.h
index 045e2a41a2..a26fd1680b 100644
--- a/migration/options.h
+++ b/migration/options.h
@@ -56,6 +56,7 @@ bool migrate_zero_copy_send(void);
 
 bool migrate_multifd_flush_after_each_section(void);
 bool migrate_postcopy(void);
+bool migrate_rdma(void);
 bool migrate_tls(void);
 
 /* capabilities helpers */
diff --git a/migration/migration.c b/migration/migration.c
index 585d3c8f55..1cb8898e6b 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -1439,6 +1439,7 @@ int migrate_init(MigrationState *s, Error **errp)
     s->iteration_initial_bytes = 0;
     s->threshold_size = 0;
     s->switchover_acked = false;
+    s->rdma_migration = false;
     /*
      * set mig_stats compression_counters memory to zero for a
      * new migration
diff --git a/migration/options.c b/migration/options.c
index 1d1e1321b0..0107d63b9b 100644
--- a/migration/options.c
+++ b/migration/options.c
@@ -376,6 +376,13 @@ bool migrate_postcopy(void)
     return migrate_postcopy_ram() || migrate_dirty_bitmaps();
 }
 
+bool migrate_rdma(void)
+{
+    MigrationState *s = migrate_get_current();
+
+    return s->rdma_migration;
+}
+
 bool migrate_tls(void)
 {
     MigrationState *s = migrate_get_current();
diff --git a/migration/rdma.c b/migration/rdma.c
index cd5e1afe60..6219227915 100644
--- a/migration/rdma.c
+++ b/migration/rdma.c
@@ -4126,6 +4126,7 @@ void rdma_start_incoming_migration(const char *host_port, Error **errp)
     int ret;
     RDMAContext *rdma;
     Error *local_err = NULL;
+    MigrationState *s = migrate_get_current();
 
     trace_rdma_start_incoming_migration();
 
@@ -4156,7 +4157,7 @@ void rdma_start_incoming_migration(const char *host_port, Error **errp)
     }
 
     trace_rdma_start_incoming_migration_after_rdma_listen();
-
+    s->rdma_migration = true;
     qemu_set_fd_handler(rdma->channel->fd, rdma_accept_incoming_migration,
                         NULL, (void *)(intptr_t)rdma);
     return;
@@ -4233,6 +4234,7 @@ void rdma_start_outgoing_migration(void *opaque,
     trace_rdma_start_outgoing_migration_after_rdma_connect();
 
     s->to_dst_file = rdma_new_output(rdma);
+    s->rdma_migration = true;
     migrate_fd_connect(s, NULL);
     return;
 return_path_err:
-- 
2.41.0