| Message ID | 20200728221210.92841-1-mathew.j.martineau@linux.intel.com |
|---|---|
| Headers | show |
| Series | Exchange MPTCP DATA_FIN/DATA_ACK before TCP FIN | expand |
From: Mat Martineau <mathew.j.martineau@linux.intel.com> Date: Tue, 28 Jul 2020 15:11:58 -0700 > This series allows the MPTCP-level connection to be closed with the > peers exchanging DATA_FIN and DATA_ACK according to the state machine in > appendix D of RFC 8684. The process is very similar to the TCP > disconnect state machine. > > The prior code sends DATA_FIN only when TCP FIN packets are sent, and > does not allow for the MPTCP-level connection to be half-closed. > > Patch 8 ("mptcp: Use full MPTCP-level disconnect state machine") is the > core of the series. Earlier patches in the series have some small fixes > and helpers in preparation, and the final four small patches do some > cleanup. Series applied, thanks.
This series allows the MPTCP-level connection to be closed with the peers exchanging DATA_FIN and DATA_ACK according to the state machine in appendix D of RFC 8684. The process is very similar to the TCP disconnect state machine. The prior code sends DATA_FIN only when TCP FIN packets are sent, and does not allow for the MPTCP-level connection to be half-closed. Patch 8 ("mptcp: Use full MPTCP-level disconnect state machine") is the core of the series. Earlier patches in the series have some small fixes and helpers in preparation, and the final four small patches do some cleanup. Mat Martineau (12): mptcp: Allow DATA_FIN in headers without TCP FIN mptcp: Return EPIPE if sending is shut down during a sendmsg mptcp: Remove outdated and incorrect comment mptcp: Use MPTCP-level flag for sending DATA_FIN mptcp: Track received DATA_FIN sequence number and add related helpers mptcp: Add mptcp_close_state() helper mptcp: Add helper to process acks of DATA_FIN mptcp: Use full MPTCP-level disconnect state machine mptcp: Only use subflow EOF signaling on fallback connections mptcp: Skip unnecessary skb extension allocation for bare acks mptcp: Safely read sequence number when lock isn't held mptcp: Safely store sequence number when sending data net/mptcp/options.c | 57 +++++++-- net/mptcp/protocol.c | 295 ++++++++++++++++++++++++++++++++++++------- net/mptcp/protocol.h | 6 +- net/mptcp/subflow.c | 14 +- 4 files changed, 306 insertions(+), 66 deletions(-) base-commit: 0003041e7a0bf24594e5d66fe217bbbefdac44ab