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authorDmytro Shytyi <dmytro@shytyi.net>2022-11-26 01:29:47 +0300
committerJakub Kicinski <kuba@kernel.org>2022-11-30 07:24:24 +0300
commit1e777f39b4d75e599a3aac8e0f67d739474f198c (patch)
tree244a6e63b51e17a2e41ce9fc3cd2e8e1409fda15 /net
parentf2bb566f5c977ff010baaa9e5e14d9a75b06e5f2 (diff)
downloadlinux-1e777f39b4d75e599a3aac8e0f67d739474f198c.tar.xz
mptcp: add MSG_FASTOPEN sendmsg flag support
Since commit 54f1944ed6d2 ("mptcp: factor out mptcp_connect()"), all the infrastructure is now in place to support the MSG_FASTOPEN flag, we just need to call into the fastopen path in mptcp_sendmsg(). Co-developed-by: Benjamin Hesmans <benjamin.hesmans@tessares.net> Signed-off-by: Benjamin Hesmans <benjamin.hesmans@tessares.net> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Dmytro Shytyi <dmytro@shytyi.net> Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net')
-rw-r--r--net/mptcp/protocol.c9
1 files changed, 3 insertions, 6 deletions
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index 3722a8580b61..efc84816a692 100644
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -1711,17 +1711,14 @@ static int mptcp_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
int ret = 0;
long timeo;
- /* we don't support FASTOPEN yet */
- if (msg->msg_flags & MSG_FASTOPEN)
- return -EOPNOTSUPP;
-
/* silently ignore everything else */
- msg->msg_flags &= MSG_MORE | MSG_DONTWAIT | MSG_NOSIGNAL;
+ msg->msg_flags &= MSG_MORE | MSG_DONTWAIT | MSG_NOSIGNAL | MSG_FASTOPEN;
lock_sock(sk);
ssock = __mptcp_nmpc_socket(msk);
- if (unlikely(ssock && inet_sk(ssock->sk)->defer_connect)) {
+ if (unlikely(ssock && (inet_sk(ssock->sk)->defer_connect ||
+ msg->msg_flags & MSG_FASTOPEN))) {
int copied_syn = 0;
ret = mptcp_sendmsg_fastopen(sk, ssock->sk, msg, len, &copied_syn);