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Commit f421436a authored by Arvid Brodin's avatar Arvid Brodin Committed by David S. Miller
Browse files

net/hsr: Add support for the High-availability Seamless Redundancy protocol (HSRv0) 



High-availability Seamless Redundancy ("HSR") provides instant failover
redundancy for Ethernet networks. It requires a special network topology where
all nodes are connected in a ring (each node having two physical network
interfaces). It is suited for applications that demand high availability and
very short reaction time.

HSR acts on the Ethernet layer, using a registered Ethernet protocol type to
send special HSR frames in both directions over the ring. The driver creates
virtual network interfaces that can be used just like any ordinary Linux
network interface, for IP/TCP/UDP traffic etc. All nodes in the network ring
must be HSR capable.

This code is a "best effort" to comply with the HSR standard as described in
IEC 62439-3:2010 (HSRv0).

Signed-off-by: default avatarArvid Brodin <arvid.brodin@xdin.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 74d332c1

include/uapi/linux/hsr_netlink.h

0 → 100644
+50 −0
Original line number Diff line number Diff line 
/*

 * Copyright 2011-2013 Autronica Fire and Security AS

 *

 * This program is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License as published by the Free

 * Software Foundation; either version 2 of the License, or (at your option)

 * any later version.

 *

 * Author(s):

 *	2011-2013 Arvid Brodin, arvid.brodin@xdin.com

 */



#ifndef __UAPI_HSR_NETLINK_H

#define __UAPI_HSR_NETLINK_H



/* Generic Netlink HSR family definition

 */



/* attributes */

enum {

	HSR_A_UNSPEC,

	HSR_A_NODE_ADDR,

	HSR_A_IFINDEX,

	HSR_A_IF1_AGE,

	HSR_A_IF2_AGE,

	HSR_A_NODE_ADDR_B,

	HSR_A_IF1_SEQ,

	HSR_A_IF2_SEQ,

	HSR_A_IF1_IFINDEX,

	HSR_A_IF2_IFINDEX,

	HSR_A_ADDR_B_IFINDEX,

	__HSR_A_MAX,

};

#define HSR_A_MAX (__HSR_A_MAX - 1)





/* commands */

enum {

	HSR_C_UNSPEC,

	HSR_C_RING_ERROR,

	HSR_C_NODE_DOWN,

	HSR_C_GET_NODE_STATUS,

	HSR_C_SET_NODE_STATUS,

	HSR_C_GET_NODE_LIST,

	HSR_C_SET_NODE_LIST,

	__HSR_C_MAX,

};

#define HSR_C_MAX (__HSR_C_MAX - 1)



#endif /* __UAPI_HSR_NETLINK_H */

include/uapi/linux/if_ether.h

+1 −0
Original line number Diff line number Diff line
@@ -85,6 +85,7 @@ 
#define ETH_P_8021AH	0x88E7          /* 802.1ah Backbone Service Tag */

#define ETH_P_MVRP	0x88F5          /* 802.1Q MVRP                  */

#define ETH_P_1588	0x88F7		/* IEEE 1588 Timesync */

#define ETH_P_PRP	0x88FB		/* IEC 62439-3 PRP/HSRv0	*/

#define ETH_P_FCOE	0x8906		/* Fibre Channel over Ethernet  */

#define ETH_P_TDLS	0x890D          /* TDLS */

#define ETH_P_FIP	0x8914		/* FCoE Initialization Protocol */

include/uapi/linux/if_link.h

+13 −0
Original line number Diff line number Diff line
@@ -481,4 +481,17 @@ enum { 


#define IFLA_IPOIB_MAX (__IFLA_IPOIB_MAX - 1)





/* HSR section */



enum {

	IFLA_HSR_UNSPEC,

	IFLA_HSR_SLAVE1,

	IFLA_HSR_SLAVE2,

	IFLA_HSR_MULTICAST_SPEC,

	__IFLA_HSR_MAX,

};



#define IFLA_HSR_MAX (__IFLA_HSR_MAX - 1)



#endif /* _UAPI_LINUX_IF_LINK_H */

net/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -220,6 +220,7 @@ source "net/openvswitch/Kconfig" 
source "net/vmw_vsock/Kconfig"

source "net/netlink/Kconfig"

source "net/mpls/Kconfig"

source "net/hsr/Kconfig"



config RPS

	boolean

net/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -71,3 +71,4 @@ obj-$(CONFIG_NFC) += nfc/ 
obj-$(CONFIG_OPENVSWITCH)	+= openvswitch/

obj-$(CONFIG_VSOCKETS)	+= vmw_vsock/

obj-$(CONFIG_NET_MPLS_GSO)	+= mpls/

obj-$(CONFIG_HSR)		+= hsr/