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/*
* Copyright (C) 2007-2009 B.A.T.M.A.N. contributors:
*
* Marek Lindner, Simon Wunderlich
*
* 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
*
*
* This file contains macros for maintaining compatibility with older versions
* of the Linux kernel.
*/
#include <linux/version.h> /* LINUX_VERSION_CODE */
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 22)
#define skb_set_network_header(_skb, _offset) \
do { (_skb)->nh.raw = (_skb)->data + (_offset); } while (0)
#define skb_reset_mac_header(_skb) \
do { (_skb)->mac.raw = (_skb)->data; } while (0)
#define list_first_entry(ptr, type, member) \
list_entry((ptr)->next, type, member)
#define skb_mac_header(_skb) \
((_skb)->mac.raw)
#define skb_network_header(_skb) \
((_skb)->nh.raw)
#define skb_mac_header(_skb) \
((_skb)->mac.raw)
#endif /* < KERNEL_VERSION(2,6,22) */
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 23)
static inline int skb_clone_writable(struct sk_buff *skb, unsigned int len)
{
/* skb->hdr_len not available, just "not writable" to enforce a copy */
return 0;
}
#define cancel_delayed_work_sync(wq) cancel_rearming_delayed_work(wq)
#endif /* < KERNEL_VERSION(2, 6, 23) */
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 25)
#define strict_strtoul(cp, base, res) \
({ \
int ret = 0; \
char *endp; \
*res = simple_strtoul(cp, &endp, base); \
if (cp == endp) \
ret = -EINVAL; \
ret; \
})
#endif /* < KERNEL_VERSION(2, 6, 25) */
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 26)
static const char hex_asc[] = "0123456789abcdef";
#define hex_asc_lo(x) hex_asc[((x) & 0x0f)]
#define hex_asc_hi(x) hex_asc[((x) & 0xf0) >> 4]
static inline char *pack_hex_byte(char *buf, u8 byte)
{
*buf++ = hex_asc_hi(byte);
*buf++ = hex_asc_lo(byte);
return buf;
}
#define device_create(_cls, _parent, _devt, _device, _fmt) \
class_device_create(_cls, _parent, _devt, _device, _fmt)
#define device_destroy(_cls, _device) \
class_device_destroy(_cls, _device)
#endif /* < KERNEL_VERSION(2, 6, 26) */
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 27)
#ifndef dereference_function_descriptor
#define dereference_function_descriptor(p) (p)
#endif
#ifndef device_create
#define device_create(_cls, _parent, _devt, _device, _fmt) \
device_create_drvdata(_cls, _parent, _devt, _device, _fmt)
#endif
#endif /* < KERNEL_VERSION(2, 6, 27) */
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29)
asmlinkage int bat_printk(const char *fmt, ...);
#define printk bat_printk
static inline struct net_device_stats *dev_get_stats(struct net_device *dev)
{
if (dev->get_stats)
return dev->get_stats(dev);
else
return NULL;
}
#endif /* < KERNEL_VERSION(2, 6, 29) */
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