[PATCH mptcp-net v3 6/8] mptcp: pm: userspace: don't dump initial ID0

After the first patch of this series, the initial ID0 address is present
in the local addr list when the connection has been created. Not to
change the previous behaviour, but also to have a similar behaviour than
what is done with the in-kernel PM, the initial ID0 address is not
dumped with the rest.

If the address is removed, then re-added later with a new subflow, it
can be dumped.

Fixes: 34e74a5cf3b7 ("mptcp: implement mptcp_userspace_pm_dump_addr")
Signed-off-by: Matthieu Baerts (NGI0) <[email protected]>
---
v3:
 - use is_init_id0() helper, to check the port and not the flags
   (prev workaround, but doesn't work if modified later)
---
 net/mptcp/pm_userspace.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/mptcp/pm_userspace.c b/net/mptcp/pm_userspace.c
index 87f044735c59..284d021c6e5e 100644
--- a/net/mptcp/pm_userspace.c
+++ b/net/mptcp/pm_userspace.c
@@ -633,7 +633,7 @@ int mptcp_userspace_pm_dump_addr(struct sk_buff *msg,
 	lock_sock(sk);
 	spin_lock_bh(&msk->pm.lock);
 	mptcp_for_each_userspace_pm_addr(msk, entry) {
-		if (test_bit(entry->addr.id, bitmap->map))
+		if (is_init_id0(entry) || test_bit(entry->addr.id, bitmap->map))
 			continue;
 
 		if (mptcp_pm_genl_fill_addr(msg, cb, entry) < 0)

-- 
2.53.0