mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-10-31 14:30:50 +00:00
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
/*
|
|
* Bond several ethernet interfaces into a Cisco, running 'Etherchannel'.
|
|
*
|
|
*
|
|
* Portions are (c) Copyright 1995 Simon "Guru Aleph-Null" Janes
|
|
* NCM: Network and Communications Management, Inc.
|
|
*
|
|
* BUT, I'm the one who modified it for ethernet, so:
|
|
* (c) Copyright 1999, Thomas Davis, tadavis@lbl.gov
|
|
*
|
|
* This software may be used and distributed according to the terms
|
|
* of the GNU Public License, incorporated herein by reference.
|
|
*
|
|
* 2003/03/18 - Amir Noam <amir.noam at intel dot com>
|
|
* - Added support for getting slave's speed and duplex via ethtool.
|
|
* Needed for 802.3ad and other future modes.
|
|
*
|
|
* 2003/03/18 - Tsippy Mendelson <tsippy.mendelson at intel dot com> and
|
|
* Shmulik Hen <shmulik.hen at intel dot com>
|
|
* - Enable support of modes that need to use the unique mac address of
|
|
* each slave.
|
|
*
|
|
* 2003/03/18 - Tsippy Mendelson <tsippy.mendelson at intel dot com> and
|
|
* Amir Noam <amir.noam at intel dot com>
|
|
* - Moved driver's private data types to bonding.h
|
|
*
|
|
* 2003/03/18 - Amir Noam <amir.noam at intel dot com>,
|
|
* Tsippy Mendelson <tsippy.mendelson at intel dot com> and
|
|
* Shmulik Hen <shmulik.hen at intel dot com>
|
|
* - Added support for IEEE 802.3ad Dynamic link aggregation mode.
|
|
*
|
|
* 2003/05/01 - Amir Noam <amir.noam at intel dot com>
|
|
* - Added ABI version control to restore compatibility between
|
|
* new/old ifenslave and new/old bonding.
|
|
*
|
|
* 2003/12/01 - Shmulik Hen <shmulik.hen at intel dot com>
|
|
* - Code cleanup and style changes
|
|
*
|
|
* 2005/05/05 - Jason Gabler <jygabler at lbl dot gov>
|
|
* - added definitions for various XOR hashing policies
|
|
*/
|
|
|
|
#ifndef _LINUX_IF_BONDING_H
|
|
#define _LINUX_IF_BONDING_H
|
|
|
|
#include <linux/if.h>
|
|
#include <linux/types.h>
|
|
#include <linux/if_ether.h>
|
|
|
|
/* userland - kernel ABI version (2003/05/08) */
|
|
#define BOND_ABI_VERSION 2
|
|
|
|
/*
|
|
* We can remove these ioctl definitions in 2.5. People should use the
|
|
* SIOC*** versions of them instead
|
|
*/
|
|
#define BOND_ENSLAVE_OLD (SIOCDEVPRIVATE)
|
|
#define BOND_RELEASE_OLD (SIOCDEVPRIVATE + 1)
|
|
#define BOND_SETHWADDR_OLD (SIOCDEVPRIVATE + 2)
|
|
#define BOND_SLAVE_INFO_QUERY_OLD (SIOCDEVPRIVATE + 11)
|
|
#define BOND_INFO_QUERY_OLD (SIOCDEVPRIVATE + 12)
|
|
#define BOND_CHANGE_ACTIVE_OLD (SIOCDEVPRIVATE + 13)
|
|
|
|
#define BOND_CHECK_MII_STATUS (SIOCGMIIPHY)
|
|
|
|
#define BOND_MODE_ROUNDROBIN 0
|
|
#define BOND_MODE_ACTIVEBACKUP 1
|
|
#define BOND_MODE_XOR 2
|
|
#define BOND_MODE_BROADCAST 3
|
|
#define BOND_MODE_8023AD 4
|
|
#define BOND_MODE_TLB 5
|
|
#define BOND_MODE_ALB 6 /* TLB + RLB (receive load balancing) */
|
|
|
|
/* each slave's link has 4 states */
|
|
#define BOND_LINK_UP 0 /* link is up and running */
|
|
#define BOND_LINK_FAIL 1 /* link has just gone down */
|
|
#define BOND_LINK_DOWN 2 /* link has been down for too long time */
|
|
#define BOND_LINK_BACK 3 /* link is going back */
|
|
|
|
/* each slave has several states */
|
|
#define BOND_STATE_ACTIVE 0 /* link is active */
|
|
#define BOND_STATE_BACKUP 1 /* link is backup */
|
|
|
|
#define BOND_DEFAULT_MAX_BONDS 1 /* Default maximum number of devices to support */
|
|
|
|
/* hashing types */
|
|
#define BOND_XMIT_POLICY_LAYER2 0 /* layer 2 (MAC only), default */
|
|
#define BOND_XMIT_POLICY_LAYER34 1 /* layer 3+4 (IP ^ MAC) */
|
|
|
|
typedef struct ifbond {
|
|
__s32 bond_mode;
|
|
__s32 num_slaves;
|
|
__s32 miimon;
|
|
} ifbond;
|
|
|
|
typedef struct ifslave
|
|
{
|
|
__s32 slave_id; /* Used as an IN param to the BOND_SLAVE_INFO_QUERY ioctl */
|
|
char slave_name[IFNAMSIZ];
|
|
__s8 link;
|
|
__s8 state;
|
|
__u32 link_failure_count;
|
|
} ifslave;
|
|
|
|
struct ad_info {
|
|
__u16 aggregator_id;
|
|
__u16 ports;
|
|
__u16 actor_key;
|
|
__u16 partner_key;
|
|
__u8 partner_system[ETH_ALEN];
|
|
};
|
|
|
|
#endif /* _LINUX_IF_BONDING_H */
|
|
|
|
/*
|
|
* Local variables:
|
|
* version-control: t
|
|
* kept-new-versions: 5
|
|
* c-indent-level: 8
|
|
* c-basic-offset: 8
|
|
* tab-width: 8
|
|
* End:
|
|
*/
|
|
|