[PATCH v7] includes "client-server" partial support for:
1. MPTCP cookie request from client (seems OK).
2. MPTCP cookie offering from server (seems OK).
3. MPTCP SYN+DATA+COOKIE from client (seems OK).
4. subsequent write + read on the opened socket (seems OK).
===Changes between v6 and v7
- Order of commits is changed.
- Code is refactored
===Pros/Cons of v7:
- little modifications of existing TCP code in linux kernel.
- relatively decreased size of the patch (in comparison with v6)
due to reuse of some functions in tcp_fastopen.c.
===Future work:
-Adress the appearance of "MPTCP FIN" as duplicated acks.
Signed-off-by: Dmytro Shytyi <dmytro@shytyi.net>
Dmytro Shytyi (11):
Add separate fastopen.c file.
add mptcp_stream_connect to protocol.h
Initiator: MSG_FASTOPEN sendto(). request cookie
rfree(), rmem_uncharge() prototypes to protocol.h
Initiator: add locks() to mptcp_sendmsg_fastopen.
add mptcp_setsockopt_fastopen
mptfo variables for msk, options. Fix loop retrans
Fix unxpctd val of subflow->map_seq(dscrd packet)
Listener: Add received skb to msk
mptcp_fastopen_add_skb() helpers (skb to msk)
selftests: mptfo initiator/listener
include/net/tcp.h | 27 ++
net/ipv4/tcp_fastopen.c | 38 +-
net/ipv4/tcp_input.c | 20 +-
net/mptcp/Makefile | 2 +-
net/mptcp/fastopen.c | 331 ++++++++++++++++++
net/mptcp/options.c | 3 +
net/mptcp/protocol.c | 12 +-
net/mptcp/protocol.h | 56 ++-
net/mptcp/sockopt.c | 3 +
net/mptcp/subflow.c | 8 +-
tools/testing/selftests/net/mptcp/mptfo.sh | 13 +
.../selftests/net/mptcp/mptfo_initiator.c | 41 +++
.../selftests/net/mptcp/mptfo_listener.c | 98 ++++++
13 files changed, 614 insertions(+), 38 deletions(-)
create mode 100644 net/mptcp/fastopen.c
create mode 100644 tools/testing/selftests/net/mptcp/mptfo.sh
create mode 100644 tools/testing/selftests/net/mptcp/mptfo_initiator.c
create mode 100644 tools/testing/selftests/net/mptcp/mptfo_listener.c
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2.25.1