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169a3e6663
Add support for alternate slave selection algorithms to bonding
balance-xor and 802.3ad modes. Default mode (what we have now: xor of
MAC addresses) is "layer2", new choice is "layer3+4", using IP and port
information for hashing to select peer.
Originally submitted by Jason Gabler for balance-xor mode;
modified by Jay Vosburgh to additionally support 802.3ad mode. Jason's
original comment is as follows:
The attached patch to the Linux Etherchannel Bonding driver modifies the
driver's "balance-xor" mode as follows:
- alternate hashing policy support for mode 2
* Added kernel parameter "xmit_policy" to allow the specification
of different hashing policies for mode 2. The original mode 2
policy is the default, now found in xmit_hash_policy_layer2().
* Added xmit_hash_policy_layer34()
This patch was inspired by hashing policies implemented by Cisco,
Foundry and IBM, which are explained in
Foundry documentation found at:
http://www.foundrynet.com/services/documentation/sribcg/Trunking.html#112750
Signed-off-by: Jason Gabler <jygabler@lbl.gov>
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
125 lines
3.7 KiB
C
125 lines
3.7 KiB
C
/*
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* Bond several ethernet interfaces into a Cisco, running 'Etherchannel'.
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*
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*
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* Portions are (c) Copyright 1995 Simon "Guru Aleph-Null" Janes
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* NCM: Network and Communications Management, Inc.
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*
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* BUT, I'm the one who modified it for ethernet, so:
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* (c) Copyright 1999, Thomas Davis, tadavis@lbl.gov
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*
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* This software may be used and distributed according to the terms
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* of the GNU Public License, incorporated herein by reference.
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*
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* 2003/03/18 - Amir Noam <amir.noam at intel dot com>
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* - Added support for getting slave's speed and duplex via ethtool.
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* Needed for 802.3ad and other future modes.
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*
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* 2003/03/18 - Tsippy Mendelson <tsippy.mendelson at intel dot com> and
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* Shmulik Hen <shmulik.hen at intel dot com>
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* - Enable support of modes that need to use the unique mac address of
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* each slave.
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*
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* 2003/03/18 - Tsippy Mendelson <tsippy.mendelson at intel dot com> and
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* Amir Noam <amir.noam at intel dot com>
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* - Moved driver's private data types to bonding.h
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*
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* 2003/03/18 - Amir Noam <amir.noam at intel dot com>,
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* Tsippy Mendelson <tsippy.mendelson at intel dot com> and
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* Shmulik Hen <shmulik.hen at intel dot com>
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* - Added support for IEEE 802.3ad Dynamic link aggregation mode.
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*
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* 2003/05/01 - Amir Noam <amir.noam at intel dot com>
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* - Added ABI version control to restore compatibility between
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* new/old ifenslave and new/old bonding.
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*
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* 2003/12/01 - Shmulik Hen <shmulik.hen at intel dot com>
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* - Code cleanup and style changes
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*
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* 2005/05/05 - Jason Gabler <jygabler at lbl dot gov>
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* - added definitions for various XOR hashing policies
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*/
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#ifndef _LINUX_IF_BONDING_H
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#define _LINUX_IF_BONDING_H
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#include <linux/if.h>
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#include <linux/types.h>
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#include <linux/if_ether.h>
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/* userland - kernel ABI version (2003/05/08) */
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#define BOND_ABI_VERSION 2
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/*
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* We can remove these ioctl definitions in 2.5. People should use the
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* SIOC*** versions of them instead
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*/
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#define BOND_ENSLAVE_OLD (SIOCDEVPRIVATE)
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#define BOND_RELEASE_OLD (SIOCDEVPRIVATE + 1)
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#define BOND_SETHWADDR_OLD (SIOCDEVPRIVATE + 2)
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#define BOND_SLAVE_INFO_QUERY_OLD (SIOCDEVPRIVATE + 11)
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#define BOND_INFO_QUERY_OLD (SIOCDEVPRIVATE + 12)
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#define BOND_CHANGE_ACTIVE_OLD (SIOCDEVPRIVATE + 13)
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#define BOND_CHECK_MII_STATUS (SIOCGMIIPHY)
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#define BOND_MODE_ROUNDROBIN 0
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#define BOND_MODE_ACTIVEBACKUP 1
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#define BOND_MODE_XOR 2
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#define BOND_MODE_BROADCAST 3
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#define BOND_MODE_8023AD 4
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#define BOND_MODE_TLB 5
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#define BOND_MODE_ALB 6 /* TLB + RLB (receive load balancing) */
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/* each slave's link has 4 states */
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#define BOND_LINK_UP 0 /* link is up and running */
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#define BOND_LINK_FAIL 1 /* link has just gone down */
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#define BOND_LINK_DOWN 2 /* link has been down for too long time */
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#define BOND_LINK_BACK 3 /* link is going back */
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/* each slave has several states */
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#define BOND_STATE_ACTIVE 0 /* link is active */
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#define BOND_STATE_BACKUP 1 /* link is backup */
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#define BOND_DEFAULT_MAX_BONDS 1 /* Default maximum number of devices to support */
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/* hashing types */
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#define BOND_XMIT_POLICY_LAYER2 0 /* layer 2 (MAC only), default */
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#define BOND_XMIT_POLICY_LAYER34 1 /* layer 3+4 (IP ^ MAC) */
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typedef struct ifbond {
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__s32 bond_mode;
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__s32 num_slaves;
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__s32 miimon;
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} ifbond;
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typedef struct ifslave
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{
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__s32 slave_id; /* Used as an IN param to the BOND_SLAVE_INFO_QUERY ioctl */
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char slave_name[IFNAMSIZ];
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__s8 link;
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__s8 state;
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__u32 link_failure_count;
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} ifslave;
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struct ad_info {
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__u16 aggregator_id;
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__u16 ports;
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__u16 actor_key;
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__u16 partner_key;
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__u8 partner_system[ETH_ALEN];
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};
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#endif /* _LINUX_IF_BONDING_H */
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/*
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* Local variables:
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* version-control: t
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* kept-new-versions: 5
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* c-indent-level: 8
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* c-basic-offset: 8
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* tab-width: 8
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* End:
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*/
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