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path: root/Documentation/networking/bonding.txt

Age	Commit message (Expand)	Author
2018-07-16	bonding: Fix a typo in bonding.txt	Masanari Iida
2018-05-16	Revert "bonding: allow carrier and link status to determine link state"	Debabrata Banerjee
2018-05-16	bonding: allow carrier and link status to determine link state	Debabrata Banerjee
2018-05-11	net: doc: fix spelling mistake: "modrobe.d" -> "modprobe.d"	Tonghao Zhang
2017-10-07	doc: Fix typo "8023.ad" in bonding documentation	Axel Beckert
2016-05-04	bonding: update documentation section after dev->trans_start removal	Florian Westphal
2015-05-11	bonding: Implement user key part of port_key in an AD system.	Mahesh Bandewar
2015-05-11	bonding: Allow userspace to set actors' macaddr in an AD-system.	Mahesh Bandewar
2015-05-11	bonding: Allow userspace to set actors' system_priority in AD system	Mahesh Bandewar
2014-10-29	tcp: allow for bigger reordering level	Eric Dumazet
2014-07-17	bonding: update bonding.txt for Layer2 hash factors	Jianhua Xie
2014-04-24	bonding: Add tlb_dynamic_lb parameter for tlb mode	Mahesh Bandewar
2014-04-24	bonding: Added bond_tlb_xmit() for tlb mode.	Mahesh Bandewar
2014-02-18	bonding: document the new _arp options for arp_validate	Veaceslav Falico
2014-02-18	bonding: permit using arp_validate with non-ab modes	Veaceslav Falico
2014-01-22	bonding: update bonding.txt for primary description	dingtianhong
2013-12-31	bonding: update Documentation/networking/bonding.txt for option lp_interval	dingtianhong
2013-11-07	bonding: document the new packets_per_slave option	Nikolay Aleksandrov
2013-10-03	bonding: document the new xmit policy modes and update the changed ones	Nikolay Aleksandrov
2013-09-15	bonding: Make alb learning packet interval configurable	Neil Horman
2013-06-25	bonding: add an option to fail when any of arp_ip_target is inaccessible	Veaceslav Falico
2013-06-25	bonding: doc: some details on backup slave arp validation	Veaceslav Falico
2013-05-27	bonding: remove ifenslave.c from kernel source	Cong Wang
2012-08-22	bonding: support for IPv6 transmit hashing	John Eaglesham
2012-07-22	net-next: minor cleanups for bonding documentation	Rick Jones
2012-03-30	Documentation: replace install commands with softdeps	Lucas De Marchi
2012-03-30	Documentation: remove references to /etc/modprobe.conf	Lucas De Marchi
2011-12-26	bonding: document undocumented active_slave sysfs entry.	Nicolas de Pesloüan
2011-08-07	bonding: document two undocumented options.	Nicolas de Pesloüan
2011-08-01	Documentation/bonding.txt: Update to 3.x version numbers	Jesper Juhl
2011-05-25	bonding: documentation and code cleanup for resend_igmp	Flavio Leitner
2011-04-29	ipv4, ipv6, bonding: Restore control over number of peer notifications	Ben Hutchings
2011-03-31	Fix common misspellings	Lucas De Marchi
2011-03-14	bonding: documentation update: mailing lists.	Nicolas de Pesloüan
2011-01-25	bonding: update documentation - alternate configuration.	Nicolas de Pesloüan
2010-10-05	bonding: add retransmit membership reports tunable	Flavio Leitner
2010-08-04	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jiko...	Linus Torvalds
2010-08-04	Documentation: update broken web addresses.	Justin P. Mattock
2010-06-05	bonding: allow user-controlled output slave selection	Andy Gospodarek
2009-10-07	bonding: introduce primary_reselect option	Jiri Pirko
2009-06-12	trivial: Miscellaneous documentation typo fixes	Matt LaPlante
2009-04-13	Bonding: fix zero address hole bug in arp_ip_target list	Brian Haley
2008-11-06	bonding: alternate agg selection policies for 802.3ad	Jay Vosburgh
2008-11-06	bonding: send IPv6 neighbor advertisement on failover	Brian Haley
2008-11-02	bonding: update docs to correctly reflect arp_ip_target behavior	Andy Gospodarek
2008-07-26	Documentation cleanup: trivial misspelling, punctuation, and grammar correcti...	Matt LaPlante
2008-06-18	bonding: Allow setting max_bonds to zero	Jay Vosburgh
2008-06-18	bonding: Rework / fix multiple gratuitous ARP support	Jay Vosburgh
2008-05-22	bonding: Add "follow" option to fail_over_mac	Jay Vosburgh
2008-01-28	[BONDING]: Documentation update	Jay Vosburgh

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generated by cgit v1.2.3 (git 2.25.1) at 2024-08-05 09:02:01 +0000

// SPDX-License-Identifier: GPL-2.0
/*
 * Device driver for the Apple Desktop Bus
 * and the /dev/adb device on macintoshes.
 *
 * Copyright (C) 1996 Paul Mackerras.
 *
 * Modified to declare controllers as structures, added
 * client notification of bus reset and handles PowerBook
 * sleep, by Benjamin Herrenschmidt.
 *
 * To do:
 *
 * - /sys/bus/adb to list the devices and infos
 * - more /dev/adb to allow userland to receive the
 *   flow of auto-polling datas from a given device.
 * - move bus probe to a kernel thread
 */

#include <linux/types.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/mm.h>
#include <linux/sched/signal.h>
#include <linux/adb.h>
#include <linux/cuda.h>
#include <linux/pmu.h>
#include <linux/notifier.h>
#include <linux/wait.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/spinlock.h>
#include <linux/completion.h>
#include <linux/device.h>
#include <linux/kthread.h>
#include <linux/platform_device.h>
#include <linux/mutex.h>

#include <linux/uaccess.h>
#ifdef CONFIG_PPC
#include <asm/prom.h>
#include <asm/machdep.h>
#endif


EXPORT_SYMBOL(adb_client_list);

extern struct adb_driver via_macii_driver;
extern struct adb_driver via_cuda_driver;
extern struct adb_driver adb_iop_driver;
extern struct adb_driver via_pmu_driver;
extern struct adb_driver macio_adb_driver;

static DEFINE_MUTEX(adb_mutex);
static struct adb_driver *adb_driver_list[] = {
#ifdef CONFIG_ADB_MACII
	&via_macii_driver,
#endif
#ifdef CONFIG_ADB_CUDA
	&via_cuda_driver,
#endif
#ifdef CONFIG_ADB_IOP
	&adb_iop_driver,
#endif
#ifdef CONFIG_ADB_PMU
	&via_pmu_driver,
#endif
#ifdef CONFIG_ADB_MACIO
	&macio_adb_driver,
#endif
	NULL
};

static struct class *adb_dev_class;

static struct adb_driver *adb_controller;
BLOCKING_NOTIFIER_HEAD(adb_client_list);
static int adb_got_sleep;
static int adb_inited;
static DEFINE_SEMAPHORE(adb_probe_mutex);
static int sleepy_trackpad;
static int autopoll_devs;
int __adb_probe_sync;

static int adb_scan_bus(void);
static int do_adb_reset_bus(void);
static void adbdev_init(void);
static int try_handler_change(int, int);

static struct adb_handler {
	void (*handler)(unsigned char *, int, int);
	int original_address;
	int handler_id;
	int busy;
} adb_handler[16];

/*
 * The adb_handler_mutex mutex protects all accesses to the original_address
 * and handler_id fields of adb_handler[i] for all i, and changes to the
 * handler field.
 * Accesses to the handler field are protected by the adb_handler_lock
 * rwlock.  It is held across all calls to any handler, so that by the
 * time adb_unregister returns, we know that the old handler isn't being
 * called.
 */
static DEFINE_MUTEX(adb_handler_mutex);
static DEFINE_RWLOCK(adb_handler_lock);

#if 0
static void printADBreply(struct adb_request *req)
{
        int i;

        printk("adb reply (%d)", req->reply_len);
        for(i = 0; i < req->reply_len; i++)
                printk(" %x", req->reply[i]);
        printk("\n");

}
#endif

static int adb_scan_bus(void)
{
	int i, highFree=0, noMovement;
	int devmask = 0;
	struct adb_request req;
	
	/* assumes adb_handler[] is all zeroes at this point */
	for (i = 1; i < 16; i++) {
		/* see if there is anything at address i */
		adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
                            (i << 4) | 0xf);
		if (req.reply_len > 1)
			/* one or more devices at this address */
			adb_handler[i].original_address = i;
		else if (i > highFree)
			highFree = i;
	}

	/* Note we reset noMovement to 0 each time we move a device */
	for (noMovement = 1; noMovement < 2 && highFree > 0; noMovement++) {
		for (i = 1; i < 16; i++) {
			if (adb_handler[i].original_address == 0)
				continue;
			/*
			 * Send a "talk register 3" command to address i
			 * to provoke a collision if there is more than
			 * one device at this address.
			 */
			adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
				    (i << 4) | 0xf);
			/*
			 * Move the device(s) which didn't detect a
			 * collision to address `highFree'.  Hopefully
			 * this only moves one device.
			 */
			adb_request(&req, NULL, ADBREQ_SYNC, 3,
				    (i<< 4) | 0xb, (highFree | 0x60), 0xfe);
			/*
			 * See if anybody actually moved. This is suggested
			 * by HW TechNote 01:
			 *
			 * http://developer.apple.com/technotes/hw/hw_01.html
			 */
			adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
				    (highFree << 4) | 0xf);
			if (req.reply_len <= 1) continue;
			/*
			 * Test whether there are any device(s) left
			 * at address i.
			 */
			adb_request(&req, NULL, ADBREQ_SYNC | ADBREQ_REPLY, 1,
				    (i << 4) | 0xf);
			if (req.reply_len > 1) {
				/*
				 * There are still one or more devices
				 * left at address i.  Register the one(s)
				 * we moved to `highFree', and find a new
				 * value for highFree.
				 */
				adb_handler[highFree].original_address =
					adb_handler[i].original_address;
				while (highFree > 0 &&
				       adb_handler[highFree].original_address)
					highFree--;
				if (highFree <= 0)
					break;

				noMovement = 0;
			} else {
				/*
				 * No devices left at address i; move the
				 * one(s) we moved to `highFree' back to i.
				 */
				adb_request(&req, NULL, ADBREQ_SYNC, 3,
					    (highFree << 4) | 0xb,
					    (i | 0x60), 0xfe);
			}
		}	
	}

	/* Now fill in the handler_id field of the adb_handler entries. */
	for (i =