From: Jon Maloy <jma...@redhat.com>
TIPC would be more attractive in a modern user environment such
as Kubernetes if it could provide a larger address range.
Advantages:
- Users could directly use UUIDs, strings or other values as service
instances types and instances.
- No more risk of collisions between randomly selected service types
The effect on the TIPC implementation and protocol would be significant,
but this is still worth considering.
---
include/linux/socket.h | 5 ++-
include/uapi/linux/tipc3.h | 79 ++++++++++++++++++++++++++++++++++++++
2 files changed, 82 insertions(+), 2 deletions(-)
create mode 100644 include/uapi/linux/tipc3.h
diff --git a/include/linux/socket.h b/include/linux/socket.h
index 54338fac45cb..ff2268ceedaf 100644
--- a/include/linux/socket.h
+++ b/include/linux/socket.h
@@ -209,8 +209,8 @@ struct ucred {
* reuses AF_INET address family
*/
#define AF_XDP 44 /* XDP sockets */
-
-#define AF_MAX 45 /* For now.. */
+#define AF_TIPC3 45 /* TIPC version 3 sockets */
+#define AF_MAX 46 /* For now.. */
/* Protocol families, same as address families. */
#define PF_UNSPEC AF_UNSPEC
@@ -260,6 +260,7 @@ struct ucred {
#define PF_QIPCRTR AF_QIPCRTR
#define PF_SMC AF_SMC
#define PF_XDP AF_XDP
+#define PF_TIPC3 AF_TIPC3
#define PF_MAX AF_MAX
/* Maximum queue length specifiable by listen. */
diff --git a/include/uapi/linux/tipc3.h b/include/uapi/linux/tipc3.h
new file mode 100644
index 000000000000..0d385bc41b66
--- /dev/null
+++ b/include/uapi/linux/tipc3.h
@@ -0,0 +1,79 @@
+/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR
BSD-3-Clause) */
+/*
+ * include/uapi/linux/tipc3.h: Header for TIPC v3 socket interface
+ *
+ * Copyright (c) 2020 Red Hat Inc
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the names of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _LINUX_TIPC3_H_
+#define _LINUX_TIPC3_H_
+
+#include <linux/types.h>
+#include <linux/sockios.h>
+#include <linux/tipc.h>
+
+struct tipc3_addr {
+ __u8[16] type; /* zero if socket address */
+ __u8[16] instance; /* port if socket address */
+ __u8[16] node; /* zero if whole cluster */
+};
+
+struct tipc3_subscr {
+ __u8[16] type;
+ __u8[16] lower;
+ __u8[16] upper;
+ __u8[16] node;
+ __u32 timeout; /* subscription duration (in ms) */
+ __u32 filter; /* bitmask of filter options */
+ __u8 usr_handle[16]; /* available for subscriber use */
+};
+
+struct tipc3_event {
+ __u8[16] lower; /* matching range */
+ __u8[16] upper; /* " " */
+ struct tipc3_addr socket; /* associated socket */
+ struct tipc2_subscr sub; /* associated subscription */
+ __u32 event; /* event type */
+};
+
+struct sockaddr_tipc3 {
+ unsigned short family;
+ bool mcast;
+ struct tipc3_addr addr;
+};
+
+struct tipc3_group_req {
+ struct tipc3_addr addr;
+ __u32 flags;
+};
+
+#endif
--
2.25.1
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