f870fa0b57
Implements the infrastructure for MPTCP sockets. MPTCP sockets open one in-kernel TCP socket per subflow. These subflow sockets are only managed by the MPTCP socket that owns them and are not visible from userspace. This commit allows a userspace program to open an MPTCP socket with: sock = socket(AF_INET, SOCK_STREAM, IPPROTO_MPTCP); The resulting socket is simply a wrapper around a single regular TCP socket, without any of the MPTCP protocol implemented over the wire. Co-developed-by: Florian Westphal <fw@strlen.de> Signed-off-by: Florian Westphal <fw@strlen.de> Co-developed-by: Peter Krystad <peter.krystad@linux.intel.com> Signed-off-by: Peter Krystad <peter.krystad@linux.intel.com> Co-developed-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Co-developed-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: Christoph Paasch <cpaasch@apple.com> Signed-off-by: David S. Miller <davem@davemloft.net>
23 lines
510 B
C
23 lines
510 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Multipath TCP
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*
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* Copyright (c) 2017 - 2019, Intel Corporation.
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*/
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#ifndef __MPTCP_PROTOCOL_H
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#define __MPTCP_PROTOCOL_H
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/* MPTCP connection sock */
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struct mptcp_sock {
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/* inet_connection_sock must be the first member */
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struct inet_connection_sock sk;
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struct socket *subflow; /* outgoing connect/listener/!mp_capable */
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};
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static inline struct mptcp_sock *mptcp_sk(const struct sock *sk)
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{
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return (struct mptcp_sock *)sk;
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}
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#endif /* __MPTCP_PROTOCOL_H */
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