diff options
| author | Matthieu Baerts <matthieu.baerts@tessares.net> | 2022-10-22 02:45:04 +0200 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2022-10-25 12:32:54 +0200 |
| commit | e64d4deb4de006faf7613c6603f5bf1bd1844ab3 (patch) | |
| tree | 8ada58dac724d4144b5da1d3f37822b279feec00 /net | |
| parent | mptcp: sockopt: make 'tcp_fastopen_connect' generic (diff) | |
| download | linux-e64d4deb4de006faf7613c6603f5bf1bd1844ab3.tar.xz linux-e64d4deb4de006faf7613c6603f5bf1bd1844ab3.zip | |
mptcp: add TCP_FASTOPEN_NO_COOKIE support
The goal of this socket option is to configure MPTCP + TFO without
cookie per socket.
It was already possible to enable TFO without a cookie per netns by
setting net.ipv4.tcp_fastopen sysctl knob to the right value. Per route
was also supported by setting 'fastopen_no_cookie' option. This patch
adds a per socket support like it is possible to do with TCP thanks to
TCP_FASTOPEN_NO_COOKIE socket option.
The only thing to do here is to relay the request to the first subflow
like it is already done for TCP_FASTOPEN_CONNECT.
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/mptcp/sockopt.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/net/mptcp/sockopt.c b/net/mptcp/sockopt.c index 8d3b09d75c3a..1857281a0dd5 100644 --- a/net/mptcp/sockopt.c +++ b/net/mptcp/sockopt.c @@ -560,6 +560,7 @@ static bool mptcp_supported_sockopt(int level, int optname) case TCP_TX_DELAY: case TCP_INQ: case TCP_FASTOPEN_CONNECT: + case TCP_FASTOPEN_NO_COOKIE: return true; } @@ -568,8 +569,8 @@ static bool mptcp_supported_sockopt(int level, int optname) /* TCP_REPAIR, TCP_REPAIR_QUEUE, TCP_QUEUE_SEQ, TCP_REPAIR_OPTIONS, * TCP_REPAIR_WINDOW are not supported, better avoid this mess */ - /* TCP_FASTOPEN_KEY, TCP_FASTOPEN, TCP_FASTOPEN_NO_COOKIE, - * are not supported fastopen is currently unsupported + /* TCP_FASTOPEN_KEY, TCP_FASTOPEN are not supported because + * fastopen for the listener side is currently unsupported */ } return false; @@ -811,6 +812,7 @@ static int mptcp_setsockopt_sol_tcp(struct mptcp_sock *msk, int optname, case TCP_DEFER_ACCEPT: return mptcp_setsockopt_sol_tcp_defer(msk, optval, optlen); case TCP_FASTOPEN_CONNECT: + case TCP_FASTOPEN_NO_COOKIE: return mptcp_setsockopt_first_sf_only(msk, SOL_TCP, optname, optval, optlen); } @@ -1175,6 +1177,7 @@ static int mptcp_getsockopt_sol_tcp(struct mptcp_sock *msk, int optname, case TCP_CC_INFO: case TCP_DEFER_ACCEPT: case TCP_FASTOPEN_CONNECT: + case TCP_FASTOPEN_NO_COOKIE: return mptcp_getsockopt_first_sf_only(msk, SOL_TCP, optname, optval, optlen); case TCP_INQ: |