Currently the 'backup' attribute of local endpoint
is ignored. Let's use it for the MP_JOIN handshake
Signed-off-by: Paolo Abeni <pab...@redhat.com>
---
net/mptcp/subflow.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c
index 9edcce21715b..58f2349930a5 100644
--- a/net/mptcp/subflow.c
+++ b/net/mptcp/subflow.c
@@ -20,6 +20,7 @@
#include <net/ip6_route.h>
#endif
#include <net/mptcp.h>
+#include <uapi/linux/mptcp.h>
#include "protocol.h"
#include "mib.h"
@@ -1090,7 +1091,7 @@ int __mptcp_subflow_connect(struct sock *sk, const struct
mptcp_addr_info *loc,
subflow->remote_token = remote_token;
subflow->local_id = local_id;
subflow->request_join = 1;
- subflow->request_bkup = 1;
+ subflow->request_bkup = !!(loc->flags & MPTCP_PM_ADDR_FLAG_BACKUP);
mptcp_info2sockaddr(remote, &addr);
err = kernel_connect(sf, (struct sockaddr *)&addr, addrlen, O_NONBLOCK);
--
2.26.2
