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[PATCH 24/44] This is an implementation of the client side of TCP Fast Open (TFO) [RFC7413]. It also includes a pre-shared key mode of operation in which the server requires the client to be in possession of a shared secret in order to successfully open TFO connections with that server.
- From: Sebastian Huber <sebastian dot huber at embedded-brains dot de>
- To: newlib at sourceware dot org
- Date: Thu, 9 Aug 2018 08:09:16 +0200
- Subject: [PATCH 24/44] This is an implementation of the client side of TCP Fast Open (TFO) [RFC7413]. It also includes a pre-shared key mode of operation in which the server requires the client to be in possession of a shared secret in order to successfully open TFO connections with that server.
- References: <20180809060936.9726-1-sebastian.huber@embedded-brains.de>
From: pkelsey <pkelsey@FreeBSD.org>
The names of some existing fastopen sysctls have changed (e.g.,
net.inet.tcp.fastopen.enabled -> net.inet.tcp.fastopen.server_enable).
Reviewed by: tuexen
MFC after: 1 month
Sponsored by: Limelight Networks
Differential Revision: https://reviews.freebsd.org/D14047
---
newlib/libc/sys/rtems/include/netinet/tcp.h | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/newlib/libc/sys/rtems/include/netinet/tcp.h b/newlib/libc/sys/rtems/include/netinet/tcp.h
index 7eb4e9afd..4c1c9d430 100644
--- a/newlib/libc/sys/rtems/include/netinet/tcp.h
+++ b/newlib/libc/sys/rtems/include/netinet/tcp.h
@@ -101,8 +101,6 @@ struct tcphdr {
#define TCPOLEN_SIGNATURE 18
#define TCPOPT_FAST_OPEN 34
#define TCPOLEN_FAST_OPEN_EMPTY 2
-#define TCPOLEN_FAST_OPEN_MIN 6
-#define TCPOLEN_FAST_OPEN_MAX 18
/* Miscellaneous constants */
#define MAX_SACK_BLKS 6 /* Max # SACK blocks stored at receiver side */
@@ -152,6 +150,10 @@ struct tcphdr {
#define TCP_MAXHLEN (0xf<<2) /* max length of header in bytes */
#define TCP_MAXOLEN (TCP_MAXHLEN - sizeof(struct tcphdr))
/* max space left for options */
+
+#define TCP_FASTOPEN_MIN_COOKIE_LEN 4 /* Per RFC7413 */
+#define TCP_FASTOPEN_MAX_COOKIE_LEN 16 /* Per RFC7413 */
+#define TCP_FASTOPEN_PSK_LEN 16 /* Same as TCP_FASTOPEN_KEY_LEN */
#endif /* __BSD_VISIBLE */
/*
@@ -252,6 +254,16 @@ struct tcp_info {
/* Padding to grow without breaking ABI. */
u_int32_t __tcpi_pad[26]; /* Padding. */
};
+
+/*
+ * If this structure is provided when setting the TCP_FASTOPEN socket
+ * option, and the enable member is non-zero, a subsequent connect will use
+ * pre-shared key (PSK) mode using the provided key.
+ */
+struct tcp_fastopen {
+ int enable;
+ uint8_t psk[TCP_FASTOPEN_PSK_LEN];
+};
#endif
#define TCP_FUNCTION_NAME_LEN_MAX 32
--
2.13.7