diff options
| author | Paolo Abeni <[email protected]> | 2024-01-16 18:18:47 +0100 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2024-01-17 10:55:54 +0000 |
| commit | c0f5aec28edf98906d28f08daace6522adf9ee7a (patch) | |
| tree | 6e1cbbfb1117b69608dc6a132c4081ee49055b41 | |
| parent | c2945c435c999c63e47f337bc7c13c98c21d0bcc (diff) | |
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: 724b00c12957 ("mptcp: refine opt_mp_capable determination")
Reviewed-by: Matthieu Baerts <[email protected]>
Signed-off-by: Paolo Abeni <[email protected]>
Reviewed-by: Eric Dumazet <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
| -rw-r--r-- | net/mptcp/subflow.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c index 1117d1e84274..0dcb721c89d1 100644 --- a/net/mptcp/subflow.c +++ b/net/mptcp/subflow.c @@ -783,7 +783,8 @@ static struct sock *subflow_syn_recv_sock(const struct sock *sk, * options. */ mptcp_get_options(skb, &mp_opt); - if (!(mp_opt.suboptions & OPTION_MPTCP_MPC_ACK)) + if (!(mp_opt.suboptions & + (OPTION_MPTCP_MPC_SYN | OPTION_MPTCP_MPC_ACK))) fallback = true; } else if (subflow_req->mp_join) { |