[mirror_ovs.git] / datapath / compat.h

/*
 * Copyright (c) 2007-2015 Nicira, Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA
 */

#ifndef COMPAT_H
#define COMPAT_H 1

#include <linux/in.h>
#include <linux/in_route.h>
#include <linux/netlink.h>
#include <net/ip.h>
#include <net/route.h>
#include <net/xfrm.h>
#include <net/netfilter/ipv6/nf_defrag_ipv6.h>
#include <net/netfilter/nf_conntrack_count.h>

/* Fix grsecurity patch compilation issue. */
#ifdef CONSTIFY_PLUGIN
#include <linux/cache.h>
#undef __read_mostly
#define __read_mostly
#endif

/* Even though vanilla 3.10 kernel has grp->id, RHEL 7 kernel is missing
 * this field. */
#ifdef HAVE_GENL_MULTICAST_GROUP_WITH_ID
#define GROUP_ID(grp)	((grp)->id)
#else
#define GROUP_ID(grp)	0
#endif

#ifdef HAVE_NF_IPV6_OPS_FRAGMENT
static inline int __init ip6_output_init(void) { return 0; }
static inline void ip6_output_exit(void) { }
#else
int __init ip6_output_init(void);
void ip6_output_exit(void);
#endif

static inline int __init compat_init(void)
{
	int err;

	err = ipfrag_init();
	if (err)
		return err;

	err = nf_ct_frag6_init();
	if (err)
		goto error_ipfrag_exit;

	err = ip6_output_init();
	if (err)
		goto error_frag6_exit;

	err = rpl_nf_conncount_modinit();
	if (err)
		goto error_nf_conncount_exit;

	return 0;

error_nf_conncount_exit:
	rpl_nf_conncount_modexit();
error_frag6_exit:
	nf_ct_frag6_cleanup();
error_ipfrag_exit:
	rpl_ipfrag_fini();
	return err;
}
static inline void compat_exit(void)
{
	rpl_nf_conncount_modexit();
	ip6_output_exit();
	nf_ct_frag6_cleanup();
	rpl_ipfrag_fini();
}

#endif /* compat.h */
Commit	Line	Data
	1	/*
	2	* Copyright (c) 2007-2015 Nicira, Inc.
	3	*
	4	* This program is free software; you can redistribute it and/or
	5	* modify it under the terms of version 2 of the GNU General Public
	6	* License as published by the Free Software Foundation.
	7	*
	8	* This program is distributed in the hope that it will be useful, but
	9	* WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	11	* General Public License for more details.
	12	*
	13	* You should have received a copy of the GNU General Public License
	14	* along with this program; if not, write to the Free Software
	15	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
	16	* 02110-1301, USA
	17	*/
	18
	19	#ifndef COMPAT_H
	20	#define COMPAT_H 1
	21
	22	#include <linux/in.h>
	23	#include <linux/in_route.h>
	24	#include <linux/netlink.h>
	25	#include <net/ip.h>
	26	#include <net/route.h>
	27	#include <net/xfrm.h>
	28	#include <net/netfilter/ipv6/nf_defrag_ipv6.h>
	29	#include <net/netfilter/nf_conntrack_count.h>
	30
	31	/* Fix grsecurity patch compilation issue. */
	32	#ifdef CONSTIFY_PLUGIN
	33	#include <linux/cache.h>
	34	#undef __read_mostly
	35	#define __read_mostly
	36	#endif
	37
	38	/* Even though vanilla 3.10 kernel has grp->id, RHEL 7 kernel is missing
	39	* this field. */
	40	#ifdef HAVE_GENL_MULTICAST_GROUP_WITH_ID
	41	#define GROUP_ID(grp) ((grp)->id)
	42	#else
	43	#define GROUP_ID(grp) 0
	44	#endif
	45
	46	#ifdef HAVE_NF_IPV6_OPS_FRAGMENT
	47	static inline int __init ip6_output_init(void) { return 0; }
	48	static inline void ip6_output_exit(void) { }
	49	#else
	50	int __init ip6_output_init(void);
	51	void ip6_output_exit(void);
	52	#endif
	53
	54	static inline int __init compat_init(void)
	55	{
	56	int err;
	57
	58	err = ipfrag_init();
	59	if (err)
	60	return err;
	61
	62	err = nf_ct_frag6_init();
	63	if (err)
	64	goto error_ipfrag_exit;
	65
	66	err = ip6_output_init();
	67	if (err)
	68	goto error_frag6_exit;
	69
	70	err = rpl_nf_conncount_modinit();
	71	if (err)
	72	goto error_nf_conncount_exit;
	73
	74	return 0;
	75
	76	error_nf_conncount_exit:
	77	rpl_nf_conncount_modexit();
	78	error_frag6_exit:
	79	nf_ct_frag6_cleanup();
	80	error_ipfrag_exit:
	81	rpl_ipfrag_fini();
	82	return err;
	83	}
	84	static inline void compat_exit(void)
	85	{
	86	rpl_nf_conncount_modexit();
	87	ip6_output_exit();
	88	nf_ct_frag6_cleanup();
	89	rpl_ipfrag_fini();
	90	}
	91
	92	#endif /* compat.h */