slirp: Prepare for persistent socket state flags

This prepares for adding flags to socket.so_state that must not be
removed during the lifetime of a socket.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/udp.c b/udp.c
index f1afbf5..8527e3e 100644
--- a/udp.c
+++ b/udp.c
@@ -660,7 +660,8 @@ struct socket *udp_listen(u_int32_t haddr, u_int hport, u_int32_t laddr,
     if (flags != SS_FACCEPTONCE)
         so->so_expire = 0;
 
-    so->so_state = SS_ISFCONNECTED;
+    so->so_state &= SS_PERSISTENT_MASK;
+    so->so_state |= SS_ISFCONNECTED;
 
     return so;
 }