diff options
| author | Mat Martineau | 2020-02-28 15:47:40 -0800 |
|---|---|---|
| committer | David S. Miller | 2020-03-03 17:01:43 -0800 |
| commit | 76c42a29c0eb15ea3fdc9867a0a52e53fb4fbd76 (patch) | |
| tree | dda4bfc901f985c1b14b0a51a49c9f0e6c74bf8b /net/mptcp/protocol.h | |
| parent | 1954b86016cf8522970e1b7aba801233d777ec47 (diff) | |
mptcp: Use per-subflow storage for DATA_FIN sequence number
Instead of reading the MPTCP-level sequence number when sending DATA_FIN,
store the data in the subflow so it can be safely accessed when the
subflow TCP headers are written to the packet without the MPTCP-level
lock held. This also allows the MPTCP-level socket to close individual
subflows without closing the MPTCP connection.
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/mptcp/protocol.h')
| -rw-r--r-- | net/mptcp/protocol.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index 6c0b2c8ab674..313558fa8185 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -125,7 +125,9 @@ struct mptcp_subflow_context { mpc_map : 1, data_avail : 1, rx_eof : 1, + data_fin_tx_enable : 1, can_ack : 1; /* only after processing the remote a key */ + u64 data_fin_tx_seq; struct sock *tcp_sock; /* tcp sk backpointer */ struct sock *conn; /* parent mptcp_sock */ |