[PATCH 5.7 041/265] mptcp: drop sndr_key in mptcp_syn_options

[Sasha Levin]

From: Geliang Tang <geliangtang@xxxxxxxxx>

[ Upstream commit b562f58bbc12444219b74a5d6524977a3d87a022 ]

In RFC 8684, we don't need to send sndr_key in SYN package anymore, so drop
it.

Fixes: cc7972ea1932 ("mptcp: parse and emit MP_CAPABLE option according to v1 spec")
Signed-off-by: Geliang Tang <geliangtang@xxxxxxxxx>
Reviewed-by: Matthieu Baerts <matthieu.baerts@xxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 net/mptcp/options.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/net/mptcp/options.c b/net/mptcp/options.c
index 1c20dd14b2aa2..2430bbfa34059 100644
--- a/net/mptcp/options.c
+++ b/net/mptcp/options.c
@@ -336,9 +336,7 @@ bool mptcp_syn_options(struct sock *sk, const struct sk_buff *skb,
 	 */
 	subflow->snd_isn = TCP_SKB_CB(skb)->end_seq;
 	if (subflow->request_mptcp) {
-		pr_debug("local_key=%llu", subflow->local_key);
 		opts->suboptions = OPTION_MPTCP_MPC_SYN;
-		opts->sndr_key = subflow->local_key;
 		*size = TCPOLEN_MPTCP_MPC_SYN;
 		return true;
 	} else if (subflow->request_join) {
-- 
2.25.1