[PATCH mptcp-next v2 4/5] mptcp: handle TCP_MAXSEG getsockopt in common case

From: Geliang Tang <[email protected]>

The TCP_MAXSEG getsockopt() case was a tail-clause returning
mptcp_getsockopt_first_sf_only() while every other "first subflow
only" option (TCP_FASTOPEN_*) was already grouped in the common
case. Move it next to its peers so the dispatch reads uniformly.

No behavioural change; the lookup still returns the cached MSS
on the first subflow.

Signed-off-by: Geliang Tang <[email protected]>
---
 net/mptcp/sockopt.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/net/mptcp/sockopt.c b/net/mptcp/sockopt.c
index 37e65923f544..34f6cd9c7967 100644
--- a/net/mptcp/sockopt.c
+++ b/net/mptcp/sockopt.c
@@ -1425,6 +1425,7 @@ static int mptcp_getsockopt_sol_tcp(struct mptcp_sock *msk, int optname,
 	case TCP_FASTOPEN_CONNECT:
 	case TCP_FASTOPEN_KEY:
 	case TCP_FASTOPEN_NO_COOKIE:
+	case TCP_MAXSEG:
 		return mptcp_getsockopt_first_sf_only(msk, SOL_TCP, optname,
 						      optval, optlen);
 	case TCP_INQ:
@@ -1449,9 +1450,6 @@ static int mptcp_getsockopt_sol_tcp(struct mptcp_sock *msk, int optname,
 		return mptcp_put_int_option(msk, optval, optlen, msk->notsent_lowat);
 	case TCP_IS_MPTCP:
 		return mptcp_put_int_option(msk, optval, optlen, 1);
-	case TCP_MAXSEG:
-		return mptcp_getsockopt_first_sf_only(msk, SOL_TCP, optname,
-						      optval, optlen);
 	}
 	return -EOPNOTSUPP;
 }
-- 
2.53.0