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madwifi/net80211/ieee80211_linux.h
mtaylor 3511ea0ea9 Add SKB_CB macro and begin using it in a few places, eventually everywhere 
we use skb->cb (will be in a subsequent commit/merge) should use 
   this macro.  This is part of a larger batch of changes I am in the process
   of merging that add better visibility into skbuff usage/leaks in the driver.

ieee80211_node_refcnt use atomic_read for consistency and because it is 
   the correct thing to do.  atomic_read is a macro that expands to the same 
   thing in most architectures anyway.



git-svn-id: http://madwifi-project.org/svn/madwifi/trunk@2887 0192ed92-7a03-0410-a25b-9323aeb14dbd
2007-11-21 10:39:06 +00:00

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/*-
* Copyright (c) 2003-2005 Sam Leffler, Errno Consulting
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $Id$
*/
#ifndef _NET80211_IEEE80211_LINUX_H_
#define _NET80211_IEEE80211_LINUX_H_
#define IEEE80211_DEBUG
#define IEEE80211_DEBUG_REFCNT /* Node reference count debugging */
#include <linux/wireless.h>
#include <linux/fs.h>
/*
* Compatibility definition of statistics flags
* (bitmask in (struct iw_quality *)->updated)
*/
#ifndef IW_QUAL_QUAL_UPDATED
#define IW_QUAL_QUAL_UPDATED 0x01 /* Value was updated since last read */
#define IW_QUAL_LEVEL_UPDATED 0x02
#define IW_QUAL_NOISE_UPDATED 0x04
#define IW_QUAL_QUAL_INVALID 0x10 /* Driver doesn't provide value */
#define IW_QUAL_LEVEL_INVALID 0x20
#define IW_QUAL_NOISE_INVALID 0x40
#endif /* IW_QUAL_QUAL_UPDATED */
#ifndef IW_QUAL_ALL_UPDATED
#define IW_QUAL_ALL_UPDATED \
(IW_QUAL_QUAL_UPDATED | IW_QUAL_LEVEL_UPDATED | IW_QUAL_NOISE_UPDATED)
#endif
#ifndef IW_QUAL_ALL_INVALID
#define IW_QUAL_ALL_INVALID \
(IW_QUAL_QUAL_INVALID | IW_QUAL_LEVEL_INVALID | IW_QUAL_NOISE_INVALID)
#endif
/*
* The RSSI values reported in the TX/RX descriptors in the driver are the SNR
* expressed in dBm. Thus 'rssi' is signal level above the noise floor in dBm.
*
* Noise is measured in dBm and is negative unless there is an unimaginable
* level of RF noise.
*
* The signal level is noise + rssi.
*
* Note that the iw_quality values are 1 byte, and can be signed, unsigned or
* negative depending on context.
*
*/
static __inline void
set_quality(struct iw_quality *iq, u_int rssi, int noise)
{
iq->qual = rssi;
iq->noise = noise;
iq->level = ((((int)rssi + noise) <= 0) ? ((int)rssi + noise) : 0);
iq->updated = IW_QUAL_ALL_UPDATED;
#if WIRELESS_EXT >= 19
iq->updated |= IW_QUAL_DBM;
#endif
}
/*
* Task deferral
*
* Deduce if tasklets are available. If not then
* fall back to using the immediate work queue.
*/
#include <linux/interrupt.h>
#ifdef DECLARE_TASKLET /* native tasklets */
#define IEEE80211_TQ_STRUCT tasklet_struct
#define IEEE80211_INIT_TQUEUE(a,b,c) tasklet_init((a), (b), (unsigned long)(c))
#define IEEE80211_SCHEDULE_TQUEUE(a) tasklet_schedule((a))
#define IEEE80211_CANCEL_TQUEUE(a) if (!in_interrupt()) tasklet_kill((a))
typedef unsigned long IEEE80211_TQUEUE_ARG;
#define mark_bh(a) do {} while (0)
#else /* immediate work queue */
#define IEEE80211_TQ_STRUCT tq_struct
#define IEEE80211_INIT_TQUEUE(a,b,c) INIT_TQUEUE(a,b,c)
#define IEEE80211_SCHEDULE_TQUEUE(a) do { \
int __macro_needmark; \
__macro_needmark |= queue_task((a), &tq_immediate); \
if (__macro_needmark) \
mark_bh(IMMEDIATE_BH); \
} while (0)
typedef void *IEEE80211_TQUEUE_ARG;
#define tasklet_disable(t) do { (void) t; local_bh_disable(); } while (0)
#define tasklet_enable(t) do { (void) t; local_bh_enable(); } while (0)
/* XXX: not supporting cancel in old kernels! */
#define IEEE80211_CANCEL_TQUEUE(a) ((a), 0)
#endif /* !DECLARE_TASKLET */
#define IEEE80211_RESCHEDULE schedule
/* Locking */
/* NB: beware, spin_is_locked() is not usefully defined for !(DEBUG || SMP)
* because spinlocks do not exist in this configuration. Instead IRQs
* or pre-emption are simply disabled, as this is all that is needed.
*/
/*
* Beacon handler locking definitions.
* Beacon locking
* UAPSD locking
*/
typedef spinlock_t ieee80211com_lock_t;
#define IEEE80211_LOCK_INIT(_ic, _name) \
spin_lock_init(&(_ic)->ic_comlock)
#define IEEE80211_LOCK_DESTROY(_ic)
#define IEEE80211_LOCK_IRQ(_ic) do { \
unsigned long __ilockflags; \
spin_lock_irqsave(&(_ic)->ic_comlock, __ilockflags);
#define IEEE80211_UNLOCK_IRQ(_ic) \
spin_unlock_irqrestore(&(_ic)->ic_comlock, __ilockflags); \
} while (0)
#define IEEE80211_UNLOCK_IRQ_EARLY(_ic) \
spin_unlock_irqrestore(&(_ic)->ic_comlock, __ilockflags);
#if (defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK)) && defined(spin_is_locked)
#define IEEE80211_LOCK_ASSERT(_ic) \
KASSERT(spin_is_locked(&(_ic)->ic_comlock), ("ieee80211com not locked!"))
#else
#define IEEE80211_LOCK_ASSERT(_ic)
#endif
#define IEEE80211_VAPS_LOCK_INIT(_ic, _name) \
spin_lock_init(&(_ic)->ic_vapslock)
#define IEEE80211_VAPS_LOCK_DESTROY(_ic)
#define IEEE80211_VAPS_LOCK_BH(_ic) spin_lock_bh(&(_ic)->ic_vapslock);
#define IEEE80211_VAPS_UNLOCK_BH(_ic) spin_unlock_bh(&(_ic)->ic_vapslock);
#if (defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK)) && defined(spin_is_locked)
#define IEEE80211_VAPS_LOCK_ASSERT(_ic) \
KASSERT(spin_is_locked(&(_ic)->ic_vapslock), \
("ieee80211com_vaps not locked!"))
#else
#define IEEE80211_VAPS_LOCK_ASSERT(_ic)
#endif
/*
* Node locking definitions.
*/
#if 0
typedef spinlock_t ieee80211_node_lock_t;
#define IEEE80211_NODE_LOCK_INIT(_ni, _name) spin_lock_init(&(_ni)->ni_nodelock)
#define IEEE80211_NODE_LOCK_DESTROY(_ni)
#define IEEE80211_NODE_LOCK_IRQ(_ni) do { \
unsigned long __node_lockflags; \
spin_lock_irqsave(&(_ni)->ni_nodelock, __node_lockflags);
#define IEEE80211_NODE_UNLOCK_IRQ(_ni) \
spin_unlock_irqrestore(&(_ni)->ni_nodelock, __node_lockflags); \
} while (0)
#define IEEE80211_NODE_UNLOCK_IRQ_EARLY(_ni) \
spin_unlock_irqrestore(&(_ni)->ni_nodelock, __node_lockflags);
#if (defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK)) && defined(spin_is_locked)
#define IEEE80211_NODE_LOCK_ASSERT(_nt) \
KASSERT(spin_is_locked(&(_ni)->ni_nodelock), \
("802.11 node not locked!"))
#else
#define IEEE80211_NODE_LOCK_ASSERT(_ni)
#endif
#endif /* node lock */
/*
* Node table locking definitions.
*/
typedef spinlock_t ieee80211_node_table_lock_t;
#define IEEE80211_NODE_TABLE_LOCK_INIT(_nt, _name) spin_lock_init(&(_nt)->nt_nodelock)
#define IEEE80211_NODE_TABLE_LOCK_DESTROY(_nt)
#if 0 /* We should always be contesting in the same contexts */
#define IEEE80211_NODE_TABLE_LOCK(_nt) spin_lock(&(_nt)->nt_nodelock)
#define IEEE80211_NODE_TABLE_UNLOCK(_nt) spin_unlock(&(_nt)->nt_nodelock)
#define IEEE80211_NODE_TABLE_LOCK_BH(_nt) spin_lock_bh(&(_nt)->nt_nodelock)
#define IEEE80211_NODE_TABLE_UNLOCK_BH(_nt) spin_unlock_bh(&(_nt)->nt_nodelock)
#endif
#define IEEE80211_NODE_TABLE_LOCK_IRQ(_nt) do { \
unsigned long __node_lockflags; \
spin_lock_irqsave(&(_nt)->nt_nodelock, __node_lockflags);
#define IEEE80211_NODE_TABLE_UNLOCK_IRQ(_nt) \
spin_unlock_irqrestore(&(_nt)->nt_nodelock, __node_lockflags); \
} while (0)
#define IEEE80211_NODE_TABLE_UNLOCK_IRQ_EARLY(_nt) \
spin_unlock_irqrestore(&(_nt)->nt_nodelock, __node_lockflags);
#if (defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK)) && defined(spin_is_locked)
#define IEEE80211_NODE_TABLE_LOCK_ASSERT(_nt) \
KASSERT(spin_is_locked(&(_nt)->nt_nodelock), \
("802.11 node table not locked!"))
#else
#define IEEE80211_NODE_TABLE_LOCK_ASSERT(_nt)
#endif
/*
* Node table scangen locking definitions.
*/
typedef spinlock_t ieee80211_scan_lock_t;
#define IEEE80211_SCAN_LOCK_INIT(_nt, _name) spin_lock_init(&(_nt)->nt_scanlock)
#define IEEE80211_SCAN_LOCK_DESTROY(_nt)
#define IEEE80211_SCAN_LOCK_IRQ(_nt) do { \
unsigned long __scan_lockflags; \
spin_lock_irqsave(&(_nt)->nt_scanlock, __scan_lockflags);
#define IEEE80211_SCAN_UNLOCK_IRQ(_nt) \
spin_unlock_irqrestore(&(_nt)->nt_scanlock, __scan_lockflags); \
} while (0)
#define IEEE80211_SCAN_UNLOCK_IRQ_EARLY(_nt) \
spin_unlock_irqrestore(&(_nt)->nt_scanlock, __scan_lockflags);
#if (defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK)) && defined(spin_is_locked)
#define IEEE80211_SCAN_LOCK_ASSERT(_nt) \
KASSERT(spin_is_locked(&(_nt)->nt_scanlock), ("scangen not locked!"))
#else
#define IEEE80211_SCAN_LOCK_ASSERT(_nt)
#endif
/*
* 802.1x MAC ACL database locking definitions.
*/
typedef spinlock_t acl_lock_t;
#define ACL_LOCK_INIT(_as, _name) spin_lock_init(&(_as)->as_lock)
#define ACL_LOCK_DESTROY(_as)
#define ACL_LOCK(_as) spin_lock(&(_as)->as_lock)
#define ACL_UNLOCK(_as) spin_unlock(&(_as)->as_lock)
#if (defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK)) && defined(spin_is_locked)
#define ACL_LOCK_ASSERT(_as) \
KASSERT(spin_is_locked(&(_as)->as_lock), ("ACL not locked!"))
#else
#define ACL_LOCK_ASSERT(_as)
#endif
/* __skb_append got a third parameter in 2.6.14 */
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,14)
#define __skb_append(a,b,c) __skb_append(a, b)
#endif
/*
* Per-node power-save queue definitions. Beware of control
* flow with IEEE80211_NODE_SAVEQ_LOCK/IEEE80211_NODE_SAVEQ_UNLOCK.
*/
#define IEEE80211_NODE_SAVEQ_INIT(_ni, _name) do { \
skb_queue_head_init(&(_ni)->ni_savedq); \
} while (0)
#define IEEE80211_NODE_SAVEQ_DESTROY(_ni)
#define IEEE80211_NODE_SAVEQ_QLEN(_ni) skb_queue_len(&(_ni)->ni_savedq)
#define IEEE80211_NODE_SAVEQ_LOCK_IRQ(_ni) do { \
unsigned long __qlockflags; \
spin_lock_irqsave(&(_ni)->ni_savedq.lock, __qlockflags);
#define IEEE80211_NODE_SAVEQ_UNLOCK_IRQ(_ni) \
spin_unlock_irqrestore(&(_ni)->ni_savedq.lock, __qlockflags); \
} while (0)
#define IEEE80211_NODE_SAVEQ_UNLOCK_IRQ_EARLY(_ni) \
spin_unlock_irqrestore(&(_ni)->ni_savedq.lock, __qlockflags);
/* caller MUST lock IEEE80211_NODE_SAVEQ */
#define IEEE80211_NODE_SAVEQ_DEQUEUE(_ni, _skb, _qlen) do { \
_skb = __skb_dequeue(&(_ni)->ni_savedq); \
(_qlen) = skb_queue_len(&(_ni)->ni_savedq); \
} while (0)
#define _IEEE80211_NODE_SAVEQ_ENQUEUE(_ni, _skb, _qlen, _age) do {\
struct sk_buff *tail = skb_peek_tail(&(_ni)->ni_savedq);\
if (tail != NULL) { \
_age -= M_AGE_GET(tail); \
__skb_append(tail, _skb, &(_ni)->ni_savedq); \
} else { \
__skb_queue_head(&(_ni)->ni_savedq, _skb); \
} \
M_AGE_SET(_skb, _age); \
(_qlen) = skb_queue_len(&(_ni)->ni_savedq); \
} while (0)
/*
* Transmitted frames have the following information
* held in the sk_buff control buffer. This is used to
* communicate various inter-procedural state that needs
* to be associated with the frame for the duration of
* its existence.
*
* NB: sizeof(cb) == 48 and the vlan code grabs the first
* 8 bytes so we reserve/avoid it.
*/
struct ieee80211_cb {
u_int8_t vlan[8]; /* reserve for vlan tag info */
struct ieee80211_node *ni;
u_int32_t flags;
#define M_LINK0 0x01 /* frame needs WEP encryption */
#define M_FF 0x02 /* fast frame */
#define M_PWR_SAV 0x04 /* bypass power save handling */
#define M_UAPSD 0x08 /* frame flagged for u-apsd handling */
#define M_RAW 0x10
struct sk_buff *next; /* fast frame sk_buf chain */
};
#define SKB_CB(_skb) ((struct ieee80211_cb *)(_skb)->cb)
#define M_FLAG_SET(_skb, _flag) \
(SKB_CB(_skb)->flags |= (_flag))
#define M_FLAG_CLR(_skb, _flag) \
(SKB_CB(_skb)->flags &= ~(_flag))
#define M_FLAG_GET(_skb, _flag) \
(SKB_CB(_skb)->flags & (_flag))
#define M_FLAG_KEEP_ONLY(_skb, _flag) \
(SKB_CB(_skb)->flags &= (_flag))
#define M_PWR_SAV_SET(skb) M_FLAG_SET((skb), M_PWR_SAV)
#define M_PWR_SAV_CLR(skb) M_FLAG_CLR((skb), M_PWR_SAV)
#define M_PWR_SAV_GET(skb) M_FLAG_GET((skb), M_PWR_SAV)
/*
* Skbufs on the power save queue are tagged with an age and
* timed out. We reuse the hardware checksum field in the
* mbuf packet header to store this data.
* XXX use private cb area
*/
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
#define skb_age csum_offset
#else
#define skb_age csum
#endif
#define M_AGE_SET(skb,v) (skb->skb_age = v)
#define M_AGE_GET(skb) (skb->skb_age)
#define M_AGE_SUB(skb,adj) (skb->skb_age -= adj)
struct ieee80211com;
struct ieee80211vap;
int ieee80211_load_module(const char *);
/*
* Node reference counting definitions.
*
* ieee80211_node_initref initialize the reference count to 1
* ieee80211_node_incref add a reference
* ieee80211_node_decref remove a reference
* ieee80211_node_dectestref remove a reference and return 1 if this
* is the last reference, otherwise 0
* ieee80211_node_refcnt reference count for printing (only)
*/
typedef atomic_t ieee80211_node_ref_count_t;
#define ieee80211_node_initref(_ni) atomic_set(&(_ni)->ni_refcnt, 1)
#define ieee80211_node_incref(_ni) atomic_inc(&(_ni)->ni_refcnt)
#define ieee80211_node_decref(_ni) atomic_dec(&(_ni)->ni_refcnt)
#define ieee80211_node_dectestref(_ni) atomic_dec_and_test(&(_ni)->ni_refcnt)
#define ieee80211_node_refcnt(_ni) atomic_read(&(_ni)->ni_refcnt)
#define le16toh(_x) le16_to_cpu(_x)
#define htole16(_x) cpu_to_le16(_x)
#define le32toh(_x) le32_to_cpu(_x)
#define htole32(_x) cpu_to_le32(_x)
#define be32toh(_x) be32_to_cpu(_x)
#define htobe32(_x) cpu_to_be32(_x)
/*
* Linux has no equivalents to malloc types so null these out.
*/
#define MALLOC_DEFINE(type, shortdesc, longdesc)
#define MALLOC_DECLARE(type)
/*
* flags to malloc.
*/
#define M_NOWAIT 0x0001 /* do not block */
#define M_WAITOK 0x0002 /* ok to block */
#define M_ZERO 0x0100 /* bzero the allocation */
static __inline void *
ieee80211_malloc(size_t size, int flags)
{
void *p = kmalloc(size, flags & M_NOWAIT ? GFP_ATOMIC : GFP_KERNEL);
if (p && (flags & M_ZERO))
memset(p, 0, size);
return p;
}
#define MALLOC(_ptr, cast, _size, _type, _flags) \
((_ptr) = (cast)ieee80211_malloc(_size, _flags))
#define FREE(addr, type) kfree((addr))
/*
* This unlikely to be popular but it dramatically reduces diffs.
*/
#define printf(...) printk(__VA_ARGS__)
struct ieee80211com;
extern void if_printf(struct net_device *, const char *, ...);
extern const char *ether_sprintf(const u_int8_t *);
/*
* Queue write-arounds and support routines.
*/
extern struct sk_buff *ieee80211_getmgtframe(u_int8_t **frm, u_int pktlen);
#define IF_ENQUEUE(_q,_skb) skb_queue_tail(_q, _skb)
#define IF_DEQUEUE(_q,_skb) (_skb = skb_dequeue(_q))
#define _IF_QLEN(_q) skb_queue_len(_q)
#define IF_DRAIN(_q) skb_queue_drain(_q)
extern void skb_queue_drain(struct sk_buff_head *q);
#ifndef __MOD_INC_USE_COUNT
#define _MOD_INC_USE(_m, _err) \
if (!try_module_get(_m)) { \
printk(KERN_WARNING "%s: try_module_get failed\n", \
__func__); \
_err; \
}
#define _MOD_DEC_USE(_m) module_put(_m)
#else
#define _MOD_INC_USE(_m, _err) MOD_INC_USE_COUNT
#define _MOD_DEC_USE(_m) MOD_DEC_USE_COUNT
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
static __inline u_int64_t
get_jiffies_64(void)
{
return (u_int64_t) jiffies; /* XXX not right */
}
#endif
/* msecs_to_jiffies appeared in 2.6.7 and 2.4.29 */
#include <linux/delay.h>
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) && \
LINUX_VERSION_CODE < KERNEL_VERSION(2,6,7)) || \
LINUX_VERSION_CODE < KERNEL_VERSION(2,4,29)
/* The following definitions and inline functions are
* copied from the kernel src, include/linux/jiffies.h */
#ifndef MSEC_PER_SEC
#define MSEC_PER_SEC (1000L)
#endif
#ifndef MAX_JIFFY_OFFSET
#define MAX_JIFFY_OFFSET ((~0UL >> 1)-1)
#endif
static __inline unsigned int jiffies_to_msecs(const unsigned long j)
{
#if HZ <= MSEC_PER_SEC && !(MSEC_PER_SEC % HZ)
return (MSEC_PER_SEC / HZ) * j;
#elif HZ > MSEC_PER_SEC && !(HZ % MSEC_PER_SEC)
return (j + (HZ / MSEC_PER_SEC) - 1)/(HZ / MSEC_PER_SEC);
#else
return (j * MSEC_PER_SEC) / HZ;
#endif
}
static __inline unsigned long msecs_to_jiffies(const unsigned int m)
{
if (m > jiffies_to_msecs(MAX_JIFFY_OFFSET))
return MAX_JIFFY_OFFSET;
#if HZ <= MSEC_PER_SEC && !(MSEC_PER_SEC % HZ)
return (m + (MSEC_PER_SEC / HZ) - 1) / (MSEC_PER_SEC / HZ);
#elif HZ > MSEC_PER_SEC && !(HZ % MSEC_PER_SEC)
return m * (HZ / MSEC_PER_SEC);
#else
return (m * HZ + MSEC_PER_SEC - 1) / MSEC_PER_SEC;
#endif
}
#endif
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,7)
#include <linux/jiffies.h>
#endif
#ifndef CLONE_KERNEL
/*
* List of flags we want to share for kernel threads,
* if only because they are not used by them anyway.
*/
#define CLONE_KERNEL (CLONE_FS | CLONE_FILES | CLONE_SIGHAND)
#endif
#include <linux/mm.h>
#ifndef offset_in_page
#define offset_in_page(p) ((unsigned long) (p) & ~PAGE_MASK)
#endif
#ifndef module_put_and_exit
#define module_put_and_exit(code) do { \
_MOD_DEC_USE(THIS_MODULE); \
do_exit(code); \
} while (0)
#endif
/*
* Linux uses __BIG_ENDIAN and __LITTLE_ENDIAN while BSD uses _foo
* and an explicit _BYTE_ORDER. Sorry, BSD got there first--define
* things in the BSD way...
*/
#undef _LITTLE_ENDIAN
#define _LITTLE_ENDIAN 1234 /* LSB first: i386, vax */
#undef _BIG_ENDIAN
#define _BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */
#include <asm/byteorder.h>
#if defined(__LITTLE_ENDIAN)
#define _BYTE_ORDER _LITTLE_ENDIAN
#elif defined(__BIG_ENDIAN)
#define _BYTE_ORDER _BIG_ENDIAN
#else
#error "Please fix asm/byteorder.h"
#endif
/*
* Deal with the sysctl handler api changing.
*/
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,8)
#define IEEE80211_SYSCTL_DECL(f, ctl, write, filp, buffer, lenp, ppos) \
f(ctl_table *ctl, int write, struct file *filp, \
void __user *buffer, size_t *lenp)
#define IEEE80211_SYSCTL_PROC_DOINTVEC(ctl, write, filp, buffer, lenp, ppos) \
proc_dointvec(ctl, write, filp, buffer, lenp)
#else
#define IEEE80211_SYSCTL_DECL(f, ctl, write, filp, buffer, lenp, ppos) \
f(ctl_table *ctl, int write, struct file *filp, \
void __user *buffer, size_t *lenp, loff_t *ppos)
#define IEEE80211_SYSCTL_PROC_DOINTVEC(ctl, write, filp, buffer, lenp, ppos) \
proc_dointvec(ctl, write, filp, buffer, lenp, ppos)
#endif
void ieee80211_virtfs_latevattach(struct ieee80211vap *);
void ieee80211_virtfs_vdetach(struct ieee80211vap *);
int ieee80211_proc_vcreate(struct ieee80211vap *, struct file_operations *,
char *);
void ieee80211_proc_cleanup(struct ieee80211vap *);
#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
#define IEEE80211_VLAN_TAG_USED 1
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,20)
#define vlan_hwaccel_receive_skb(skb, grp, tag) vlan_hwaccel_rx(skb, grp, tag)
#endif
#ifndef VLAN_GROUP_ARRAY_PART_LEN
#define vlan_group_set_device(group, vid, dev) do { \
group->vlan_devices[vid] = dev; \
} while (0);
#endif
#else
#define IEEE80211_VLAN_TAG_USED 0
#endif
void ieee80211_vlan_vattach(struct ieee80211vap *);
void ieee80211_vlan_vdetach(struct ieee80211vap *);
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
#define free_netdev(dev) kfree(dev)
#endif
void ieee80211_ioctl_vattach(struct ieee80211vap *);
void ieee80211_ioctl_vdetach(struct ieee80211vap *);
struct ifreq;
int ieee80211_ioctl_create_vap(struct ieee80211com *, struct ifreq *,
struct net_device *);
struct ieee80211vap *ieee80211_create_vap(struct ieee80211com *, char *,
struct net_device *, int, int);
#endif /* _NET80211_IEEE80211_LINUX_H_ */
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