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[RFC,10/12] mptcp: allow creating non-backup subflows

Message ID df352a00fdc120ad882049245f7d8b8e46d0878d.1596216310.git.pabeni@redhat.com
State Superseded, archived
Headers show
Series mptcp: multiple xmit substreams support | expand

Commit Message

Paolo Abeni July 31, 2020, 5:39 p.m. UTC 
Currently the 'backup' attribute of local endpoint
is ignored. Let's use it for the MP_JOIN handshake

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
 net/mptcp/subflow.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c
index 867fd8496fb8..3582f80e520a 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"
 
@@ -1018,7 +1019,7 @@  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);