DOC: tfo: bump required kernel to linux-3.7
Support for server side TFO was actually introduced in linux-3.7,
linux-3.6 just has client support.
This patch fixes documentation and a code comment about the
kernel requirement. It also fixes a wrong tfo related code
comment in src/proto_tcp.c.
diff --git a/doc/configuration.txt b/doc/configuration.txt
index 49e64c5..70a5188 100644
--- a/doc/configuration.txt
+++ b/doc/configuration.txt
@@ -7287,7 +7287,7 @@
See the "crt" option for more information.
tfo
- Is an optional keyword which is supported only on Linux kernels >= 3.6. It
+ Is an optional keyword which is supported only on Linux kernels >= 3.7. It
enables TCP Fast Open on the listening socket, which means that clients which
support this feature will be able to send a request and receive a response
during the 3-way handshake starting from second connection, thus saving one