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authorChristoph Paasch <cpaasch@apple.com>2017-10-23 13:22:23 -0700
committerDavid S. Miller <davem@davemloft.net>2017-10-24 18:48:08 +0900
commit71c02379c762cb616c00fd5c4ed253fbf6bbe11b (patch)
tree516606a09f6d284d35d2d510fe23b11bf9e69f2a /include/uapi/linux/tcp.h
parentb6f4f8484d88b69f700907200a9a9ec73806355f (diff)
tcp: Configure TFO without cookie per socket and/or per route
We already allow to enable TFO without a cookie by using the fastopen-sysctl and setting it to TFO_SERVER_COOKIE_NOT_REQD (or TFO_CLIENT_NO_COOKIE). This is safe to do in certain environments where we know that there isn't a malicous host (aka., data-centers) or when the application-protocol already provides an authentication mechanism in the first flight of data. A server however might be providing multiple services or talking to both sides (public Internet and data-center). So, this server would want to enable cookie-less TFO for certain services and/or for connections that go to the data-center. This patch exposes a socket-option and a per-route attribute to enable such fine-grained configurations. Signed-off-by: Christoph Paasch <cpaasch@apple.com> Reviewed-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/uapi/linux/tcp.h')
-rw-r--r--include/uapi/linux/tcp.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/tcp.h b/include/uapi/linux/tcp.h
index 69c7493e42f8..d67e1d40c6d6 100644
--- a/include/uapi/linux/tcp.h
+++ b/include/uapi/linux/tcp.h
@@ -120,6 +120,7 @@ enum {
#define TCP_ULP 31 /* Attach a ULP to a TCP connection */
#define TCP_MD5SIG_EXT 32 /* TCP MD5 Signature with extensions */
#define TCP_FASTOPEN_KEY 33 /* Set the key for Fast Open (cookie) */
+#define TCP_FASTOPEN_NO_COOKIE 34 /* Enable TFO without a TFO cookie */
struct tcp_repair_opt {
__u32 opt_code;