Commit adf1bb78 authored by Paolo Abeni's avatar Paolo Abeni Committed by Jakub Kicinski
Browse files

mptcp: fix snd_wnd initialization for passive socket 



Such value should be inherited from the first subflow, but
passive sockets always used 'rsk_rcv_wnd'.

Fixes: 6f8a612a ("mptcp: keep track of advertised windows right edge")
Cc: stable@vger.kernel.org
Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
Reviewed-by: default avatarMat Martineau <martineau@kernel.org>
Signed-off-by: default avatarMatthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://lore.kernel.org/r/20240223-upstream-net-20240223-misc-fixes-v1-5-162e87e48497@kernel.org


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent b9cd26f6

net/mptcp/protocol.c

+1 −1
Original line number Diff line number Diff line
@@ -3211,7 +3211,7 @@ struct sock *mptcp_sk_clone_init(const struct sock *sk, 
	msk->write_seq = subflow_req->idsn + 1;

	msk->snd_nxt = msk->write_seq;

	msk->snd_una = msk->write_seq;

	msk->wnd_end = msk->snd_nxt + req->rsk_rcv_wnd;

	msk->wnd_end = msk->snd_nxt + tcp_sk(ssk)->snd_wnd;

	msk->setsockopt_seq = mptcp_sk(sk)->setsockopt_seq;

	mptcp_init_sched(msk, mptcp_sk(sk)->sched);