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Date: Wed, 2 Oct 2019 16:36:10 -0700
From: Mat Martineau <mathew.j.martineau@...ux.intel.com>
To: netdev@...r.kernel.org, edumazet@...gle.com
Cc: Mat Martineau <mathew.j.martineau@...ux.intel.com>,
cpaasch@...le.com, fw@...len.de, pabeni@...hat.com,
peter.krystad@...ux.intel.com, dcaratti@...hat.com,
matthieu.baerts@...sares.net
Subject: [RFC PATCH v2 00/45] Multipath TCP
The MPTCP upstreaming community has prepared a net-next RFCv2 patch set
for review.
Clone/fetch:
https://github.com/multipath-tcp/mptcp_net-next.git (tag: netdev-rfcv2)
Browse:
https://github.com/multipath-tcp/mptcp_net-next/tree/netdev-rfcv2
With CONFIG_MPTCP=y, a socket created with IPPROTO_MPTCP will attempt to
create an MPTCP connection but remains compatible with regular
TCP. IPPROTO_TCP socket behavior is unchanged.
This implementation makes use of ULP between the userspace-facing MPTCP
socket and the set of in-kernel TCP sockets it controls. ULP has been
extended for use with listening sockets. skb_ext is used to carry MPTCP
metadata.
The patch set includes self-tests to exercise MPTCP in various
connection and routing scenarios.
We have more work planned to reach the initial feature set for merging,
notably:
* IPv6
* Comply with MPTCPv1 (RFC6824bis). This patch set supports only
MPTCPv0 (RFC 6824 / experimental)
* Proper MPTCP-level connection closing with DATA_FIN
* Couple receive windows across sibling subflow TCP sockets as required
by RFC 6824
* Limit subflow ULP visibility to kernel space
* Simple transmit scheduler that respects subflow 'backup' flags
In order to simplify both code review and the development process, we
propose splitting the patch set in to smaller chunks. The first patch
set for merging would include patches 1 to 31 and basic IPv6 support.
Thank you for your review. You can find us at mptcp@...ts.01.org and
https://is.gd/mptcp_upstream
Florian Westphal (7):
mptcp: add mptcp_poll
mptcp: add basic kselftest for mptcp
selftests: mptcp: make tc delays random
selftests: mptcp: extend mptcp_connect tool for ipv6 family
selftests: mptcp: add accept/getpeer checks
selftests: mptcp: add ipv6 connectivity
selftests: mptcp: random ethtool tweaking
Mat Martineau (13):
tcp: Add MPTCP option number
net: Make sock protocol value checks more specific
sock: Make sk_protocol a 16-bit value
tcp: Define IPPROTO_MPTCP
mptcp: Add MPTCP socket stubs
tcp, ulp: Add clone operation to tcp_ulp_ops
mptcp: Add MPTCP to skb extensions
tcp: Prevent coalesce/collapse when skb has MPTCP extensions
tcp: Export low-level TCP functions
mptcp: Write MPTCP DSS headers to outgoing data packets
mptcp: Implement MPTCP receive path
tcp: Check for filled TCP option space before SACK
mptcp: Make MPTCP socket block/wakeup ignore sk_receive_queue
Matthieu Baerts (1):
mptcp: new sysctl to control the activation per NS
Paolo Abeni (11):
tcp: clean ext on tx recycle
mptcp: use sk_page_frag() in sendmsg
mptcp: sendmsg() do spool all the provided data
mptcp: allow collapsing consecutive sendpages on the same substream
mptcp: harmonize locking on all socket operations.
mptcp: update per unacked sequence on pkt reception
mptcp: queue data for mptcp level retransmission
mptcp: introduce MPTCP retransmission timer
mptcp: implement memory accounting for mptcp rtx queue
mptcp: rework mptcp_sendmsg_frag to accept optional dfrag
mptcp: implement and use MPTCP-level retransmission
Peter Krystad (13):
mptcp: Handle MPTCP TCP options
mptcp: Associate MPTCP context with TCP socket
tcp: Expose tcp struct and routine for MPTCP
mptcp: Handle MP_CAPABLE options for outgoing connections
mptcp: Create SUBFLOW socket for incoming connections
mptcp: Add key generation and token tree
mptcp: Add shutdown() socket operation
mptcp: Add setsockopt()/getsockopt() socket operations
mptcp: Add path manager interface
mptcp: Add ADD_ADDR handling
mptcp: Add handling of incoming MP_JOIN requests
mptcp: Add handling of outgoing MP_JOIN requests
mptcp: Implement path manager interface commands
include/linux/skbuff.h | 11 +
include/linux/tcp.h | 51 +
include/net/mptcp.h | 149 ++
include/net/sock.h | 6 +-
include/net/tcp.h | 20 +
include/trace/events/sock.h | 5 +-
include/uapi/linux/in.h | 2 +
net/Kconfig | 1 +
net/Makefile | 1 +
net/ax25/af_ax25.c | 2 +-
net/core/skbuff.c | 7 +
net/decnet/af_decnet.c | 2 +-
net/ipv4/inet_connection_sock.c | 2 +
net/ipv4/tcp.c | 8 +-
net/ipv4/tcp_input.c | 29 +-
net/ipv4/tcp_ipv4.c | 4 +-
net/ipv4/tcp_minisocks.c | 6 +
net/ipv4/tcp_output.c | 62 +-
net/ipv4/tcp_ulp.c | 12 +
net/mptcp/Kconfig | 11 +
net/mptcp/Makefile | 4 +
net/mptcp/crypto.c | 128 ++
net/mptcp/ctrl.c | 112 ++
net/mptcp/options.c | 753 +++++++++
net/mptcp/pm.c | 181 ++
net/mptcp/protocol.c | 1455 +++++++++++++++++
net/mptcp/protocol.h | 319 ++++
net/mptcp/subflow.c | 537 ++++++
net/mptcp/token.c | 217 +++
tools/include/uapi/linux/in.h | 2 +
tools/testing/selftests/Makefile | 1 +
tools/testing/selftests/net/mptcp/.gitignore | 2 +
tools/testing/selftests/net/mptcp/Makefile | 11 +
tools/testing/selftests/net/mptcp/config | 1 +
.../selftests/net/mptcp/mptcp_connect.c | 522 ++++++
.../selftests/net/mptcp/mptcp_connect.sh | 401 +++++
36 files changed, 5021 insertions(+), 16 deletions(-)
create mode 100644 include/net/mptcp.h
create mode 100644 net/mptcp/Kconfig
create mode 100644 net/mptcp/Makefile
create mode 100644 net/mptcp/crypto.c
create mode 100644 net/mptcp/ctrl.c
create mode 100644 net/mptcp/options.c
create mode 100644 net/mptcp/pm.c
create mode 100644 net/mptcp/protocol.c
create mode 100644 net/mptcp/protocol.h
create mode 100644 net/mptcp/subflow.c
create mode 100644 net/mptcp/token.c
create mode 100644 tools/testing/selftests/net/mptcp/.gitignore
create mode 100644 tools/testing/selftests/net/mptcp/Makefile
create mode 100644 tools/testing/selftests/net/mptcp/config
create mode 100644 tools/testing/selftests/net/mptcp/mptcp_connect.c
create mode 100755 tools/testing/selftests/net/mptcp/mptcp_connect.sh
--
2.23.0
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