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/*
* Copyright (c) 2007-2012 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/netlink.h>
#ifndef HAVE_NLA_NUL_STRING
static inline int CHECK_NUL_STRING(struct nlattr *attr, int maxlen)
{
char *s;
int len;
if (!attr)
return 0;
len = nla_len(attr);
if (len >= maxlen)
return -EINVAL;
s = nla_data(attr);
if (s[len - 1] != '\0')
return -EINVAL;
return 0;
}
#else
static inline int CHECK_NUL_STRING(struct nlattr *attr, int maxlen)
{
return 0;
}
#endif /* !HAVE_NLA_NUL_STRING */
static inline void skb_clear_rxhash(struct sk_buff *skb)
{
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)
skb->rxhash = 0;
#endif
}
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,32)
#define GENL_SOCK(net) (genl_sock)
#define SET_NETNSOK
#else
#define GENL_SOCK(net) ((net)->genl_sock)
#define SET_NETNSOK .netnsok = true,
#endif
#ifdef HAVE_PARALLEL_OPS
#define SET_PARALLEL_OPS .parallel_ops = true,
#else
#define SET_PARALLEL_OPS
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
#ifdef CONFIG_NETFILTER
static inline u32 skb_get_mark(struct sk_buff *skb)
{
return skb->nfmark;
}
static inline void skb_set_mark(struct sk_buff *skb, u32 mark)
{
skb->nfmark = mark;
}
#else /* CONFIG_NETFILTER */
static inline u32 skb_get_mark(struct sk_buff *skb)
{
return 0;
}
static inline void skb_set_mark(struct sk_buff *skb, u32 mark)
{
}
#endif
#else /* before 2.6.20 */
static inline u32 skb_get_mark(struct sk_buff *skb)
{
return skb->mark;
}
static inline void skb_set_mark(struct sk_buff *skb, u32 mark)
{
skb->mark = mark;
}
#endif /* after 2.6.20 */
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36)
#define rt_dst(rt) (rt->dst)
#else
#define rt_dst(rt) (rt->u.dst)
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,33)
#define inet_sport(sk) (inet_sk(sk)->sport)
#else
#define inet_sport(sk) (inet_sk(sk)->inet_sport)
#endif
#endif /* compat.h */
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