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authorArvid Brodin <Arvid.Brodin@xdin.com>2013-10-30 16:10:47 -0400
committerDavid S. Miller <davem@davemloft.net>2013-11-03 23:20:14 -0500
commitf421436a591d34fa5279b54a96ac07d70250cc8d (patch)
treef5435cfb8877fd029dce3bdb617fae090711316f /net/hsr/hsr_device.h
parent74d332c13b2148ae934ea94dac1745ae92efe8e5 (diff)
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: Arvid Brodin <arvid.brodin@xdin.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/hsr/hsr_device.h')
-rw-r--r--net/hsr/hsr_device.h29
1 files changed, 29 insertions, 0 deletions
diff --git a/net/hsr/hsr_device.h b/net/hsr/hsr_device.h
new file mode 100644
index 000000000000..2c7148e73914
--- /dev/null
+++ b/net/hsr/hsr_device.h
@@ -0,0 +1,29 @@
1/* Copyright 2011-2013 Autronica Fire and Security AS
2 *
3 * This program is free software; you can redistribute it and/or modify it
4 * under the terms of the GNU General Public License as published by the Free
5 * Software Foundation; either version 2 of the License, or (at your option)
6 * any later version.
7 *
8 * Author(s):
9 * 2011-2013 Arvid Brodin, arvid.brodin@xdin.com
10 */
11
12#ifndef __HSR_DEVICE_H
13#define __HSR_DEVICE_H
14
15#include <linux/netdevice.h>
16#include "hsr_main.h"
17
18void hsr_dev_setup(struct net_device *dev);
19int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2],
20 unsigned char multicast_spec);
21void hsr_set_operstate(struct net_device *hsr_dev, struct net_device *slave1,
22 struct net_device *slave2);
23void hsr_set_carrier(struct net_device *hsr_dev, struct net_device *slave1,
24 struct net_device *slave2);
25void hsr_check_announce(struct net_device *hsr_dev, int old_operstate);
26bool is_hsr_master(struct net_device *dev);
27int hsr_get_max_mtu(struct hsr_priv *hsr_priv);
28
29#endif /* __HSR_DEVICE_H */