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mptcp: relax check on MPC passive fallback
While testing the blamed commit below, I was able to miss (!)
packetdrill failures in the fastopen test-cases.
On passive fastopen the child socket is created by incoming TCP MPC syn,
allow for both MPC_SYN and MPC_ACK header.
Fixes: 724b00c129
("mptcp: refine opt_mp_capable determination")
Reviewed-by: Matthieu Baerts <matttbe@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
c2945c435c
commit
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@ -783,7 +783,8 @@ static struct sock *subflow_syn_recv_sock(const struct sock *sk,
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* options.
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*/
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mptcp_get_options(skb, &mp_opt);
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if (!(mp_opt.suboptions & OPTION_MPTCP_MPC_ACK))
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if (!(mp_opt.suboptions &
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(OPTION_MPTCP_MPC_SYN | OPTION_MPTCP_MPC_ACK)))
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fallback = true;
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} else if (subflow_req->mp_join) {
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