netdev - [RFC PATCH net-next 02/33] tcp: Define IPPROTO

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Message-Id: <20190617225808.665-3-mathew.j.martineau@linux.intel.com>
Date:   Mon, 17 Jun 2019 15:57:37 -0700
From:   Mat Martineau <mathew.j.martineau@...ux.intel.com>
To:     edumazet@...gle.com, netdev@...r.kernel.org
Cc:     Mat Martineau <mathew.j.martineau@...ux.intel.com>,
        cpaasch@...le.com, fw@...len.de, pabeni@...hat.com,
        peter.krystad@...ux.intel.com, dcaratti@...hat.com,
        matthieu.baerts@...sares.net
Subject: [RFC PATCH net-next 02/33] tcp: Define IPPROTO_MPTCP

To open a MPTCP socket with socket(AF_INET, SOCK_STREAM, IPPROTO_MPTCP),
IPPROTO_MPTCP needs a value that differs from IPPROTO_TCP. The existing
IPPROTO numbers mostly map directly to IANA-specified protocol numbers.
MPTCP does not have a protocol number allocated because MPTCP packets
use the TCP protocol number. Use private number not used OTA.

Signed-off-by: Mat Martineau <mathew.j.martineau@...ux.intel.com>
---
 include/uapi/linux/in.h       | 2 ++
 tools/include/uapi/linux/in.h | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/include/uapi/linux/in.h b/include/uapi/linux/in.h
index e7ad9d350a28..44df6dc1ff1d 100644
--- a/include/uapi/linux/in.h
+++ b/include/uapi/linux/in.h
@@ -76,6 +76,8 @@ enum {
 #define IPPROTO_MPLS		IPPROTO_MPLS
   IPPROTO_RAW = 255,		/* Raw IP packets			*/
 #define IPPROTO_RAW		IPPROTO_RAW
+  IPPROTO_MPTCP = 262,		/* Multipath TCP connection 		*/
+#define IPPROTO_MPTCP		IPPROTO_MPTCP
   IPPROTO_MAX
 };
 #endif
diff --git a/tools/include/uapi/linux/in.h b/tools/include/uapi/linux/in.h
index e7ad9d350a28..44df6dc1ff1d 100644
--- a/tools/include/uapi/linux/in.h
+++ b/tools/include/uapi/linux/in.h
@@ -76,6 +76,8 @@ enum {
 #define IPPROTO_MPLS		IPPROTO_MPLS
   IPPROTO_RAW = 255,		/* Raw IP packets			*/
 #define IPPROTO_RAW		IPPROTO_RAW
+  IPPROTO_MPTCP = 262,		/* Multipath TCP connection 		*/
+#define IPPROTO_MPTCP		IPPROTO_MPTCP
   IPPROTO_MAX
 };
 #endif
-- 
2.22.0