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authorVivek Goyal <vgoyal@in.ibm.com>2005-06-25 17:58:19 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-25 19:24:53 -0400
commit5f016456c96868c27df248a54d1cc919e7b70a23 (patch)
tree9c7854f6fd3cfb27382dc7a8db1412581cf79507 /include/linux/keyctl.h
parent92aa63a5a1bf2e7b0c79e6716d24b76dbbdcf951 (diff)
[PATCH] kdump: Kconfig
- config option CONFIG_CRASH_DUMP - Made it dependent on HIGHMEM. This is required as capture kernel treats the previous kernel's memory as high memmory and stitches a PTE for accessing it. Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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/*
 * NetLabel Network Address Lists
 *
 * This file contains network address list functions used to manage ordered
 * lists of network addresses for use by the NetLabel subsystem.  The NetLabel
 * system manages static and dynamic label mappings for network protocols such
 * as CIPSO and RIPSO.
 *
 * Author: Paul Moore <paul.moore@hp.com>
 *
 */

/*
 * (c) Copyright Hewlett-Packard Development Company, L.P., 2008
 *
 * This program is free software;  you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY;  without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
 * the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program;  if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */

#include <linux/types.h>
#include <linux/rcupdate.h>
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/in.h>
#include <linux/in6.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
#include <net/ip.h>
#include <net/ipv6.h>
#include <linux/audit.h>

#include "netlabel_addrlist.h"

/*
 * Address List Functions
 */

/**
 * netlbl_af4list_search - Search for a matching IPv4 address entry
 * @addr: IPv4 address
 * @head: the list head
 *
 * Description:
 * Searches the IPv4 address list given by @head.  If a matching address entry
 * is found it is returned, otherwise NULL is returned.  The caller is
 * responsible for calling the rcu_read_[un]lock() functions.
 *
 */
struct netlbl_af4list *netlbl_af4list_search(__be32 addr,
					     struct list_head *head)
{
	struct netlbl_af4list *iter;

	list_for_each_entry_rcu(iter, head, list)
		if (iter->valid && (addr & iter->mask) == iter->addr)
			return iter;

	return NULL;
}

/**
 * netlbl_af4list_search_exact - Search for an exact IPv4 address entry
 * @addr: IPv4 address
 * @mask: IPv4 address mask
 * @head: the list head
 *
 * Description:
 * Searches the IPv4 address list given by @head.  If an exact match if found
 * it is returned, otherwise NULL is returned.  The caller is responsible for
 * calling the rcu_read_[un]lock() functions.
 *
 */
struct netlbl_af4list *netlbl_af4list_search_exact(__be32 addr,
						   __be32 mask,
						   struct list_head *head)
{
	struct netlbl_af4list *iter;

	list_for_each_entry_rcu(iter, head, list)
		if (iter->valid && iter->addr == addr && iter->mask == mask)
			return iter;

	return NULL;
}


#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
/**
 * netlbl_af6list_search - Search for a matching IPv6 address entry
 * @addr: IPv6 address
 * @head: the list head
 *
 * Description:
 * Searches the IPv6 address list given by @head.  If a matching address entry
 * is found it is returned, otherwise NULL is returned.  The caller is
 * responsible for calling the rcu_read_[un]lock() functions.
 *
 */
struct netlbl_af6list *netlbl_af6list_search(const struct in6_addr *addr,
					     struct list_head *head)
{
	struct netlbl_af6list *iter;

	list_for_each_entry_rcu(iter, head, list)
		if (iter->valid &&
		    ipv6_masked_addr_cmp(&iter->addr, &iter->mask, addr) == 0)
			return iter;

	return NULL;
}

/**
 * netlbl_af6list_search_exact - Search for an exact IPv6 address entry
 * @addr: IPv6 address
 * @mask: IPv6 address mask
 * @head: the list head
 *
 * Description: