arch/arm/mach-omap2/cminst44xx.c


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/* multipath.c: IPV4 multipath algorithm support.
 *
 * Copyright (C) 2004, 2005 Einar Lueck <elueck@de.ibm.com>
 * Copyright (C) 2005 David S. Miller <davem@davemloft.net>
 */

#include <linux/module.h>
#include <linux/errno.h>
#include <linux/netdevice.h>
#include <linux/spinlock.h>

#include <net/ip_mp_alg.h>

static DEFINE_SPINLOCK(alg_table_lock);
struct ip_mp_alg_ops *ip_mp_alg_table[IP_MP_ALG_MAX + 1];

int multipath_alg_register(struct ip_mp_alg_ops *ops, enum ip_mp_alg n)
{
	struct ip_mp_alg_ops **slot;
	int err;

	if (n < IP_MP_ALG_NONE || n > IP_MP_ALG_MAX ||
	    !ops->mp_alg_select_route)
		return -EINVAL;

	spin_lock(&alg_table_lock);
	slot = &ip_mp_alg_table[n];
	if (*slot != NULL) {
		err = -EBUSY;
	} else {
		*slot = ops;
		err = 0;
	}
	spin_unlock(&alg_table_lock);

	return err;
}
EXPORT_SYMBOL(multipath_alg_register);

void multipath_alg_unregister(struct ip_mp_alg_ops *ops, enum ip_mp_alg n)
{
	struct ip_mp_alg_ops **slot;

	if (n < IP_MP_ALG_NONE || n > IP_MP_ALG_MAX)
		return;

	spin_lock(&alg_table_lock);
	slot = &ip_mp_alg_table[n];
	if (*slot == ops)
		*slot = NULL;
	spin_unlock(&alg_table_lock);

	synchronize_net();
}
EXPORT_SYMBOL(multipath_alg_unregister);
	Commit message (Expand)	Author	Age
*	Patched in Tegra support.	Jonathan Herman	2013-01-17
*	ARM: OMAP2/3: clockdomain/PRM/CM: move the low-level clockdomain functions in...	Paul Walmsley	2012-10-21
*	ARM: OMAP4: clockdomain/CM code: Update supported transition modes	Jon Hunter	2012-07-04
*	ARM: OMAP2+: CM: increase the module disable timeout	Paul Walmsley	2012-06-21
*	ARM: OMAP4+: Add prm and cm base init function.	R Sricharan	2012-05-08
*	ARM: OMAP2+: Move most of plat/io.h into local iomap.h	Tony Lindgren	2012-02-24
*	ARM: 7159/1: OMAP: Introduce local common.h files	Tony Lindgren	2011-11-17
*	OMAP4: cm: Add two new APIs for modulemode control	Benoit Cousson	2011-07-10
*	OMAP: hwmod: Wait the idle status to be disabled	Benoit Cousson	2011-07-10
*	OMAP4: hwmod: Replace CLKCTRL absolute address with offset macros	Benoit Cousson	2011-07-10
*	OMAP4: CM: Add CM accesor api for bitwise control	Rajendra Nayak	2011-02-25
*	OMAP4: clockdomains: add OMAP4 PRCM data and OMAP4 support	Paul Walmsley	2010-12-21
*	OMAP4: PRCM: add OMAP4-specific accessor/mutator functions	Paul Walmsley	2010-12-21