refresh patches, make madwifi-dfs compile on linux 2.4 again

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@9719 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 220 insertions, 3 deletions

diff --git a/package/madwifi/patches/124-linux24_compat.patch b/package/madwifi/patches/124-linux24_compat.patch
index 69657b261..59bf7f728 100644
--- a/package/madwifi/patches/124-linux24_compat.patch
+++ b/package/madwifi/patches/124-linux24_compat.patch
@@ -1,7 +1,7 @@
-Index: madwifi-ng-r2834-20071106/ath/if_athvar.h
+Index: madwifi-dfs-r3053/ath/if_athvar.h
 ===================================================================
---- madwifi-ng-r2834-20071106.orig/ath/if_athvar.h	2007-11-07 14:02:02.861533944 +0100
-+++ madwifi-ng-r2834-20071106/ath/if_athvar.h	2007-11-07 14:02:03.557573608 +0100
+--- madwifi-dfs-r3053.orig/ath/if_athvar.h	2007-12-13 05:25:10.534225778 +0100
++++ madwifi-dfs-r3053/ath/if_athvar.h	2007-12-13 05:25:12.842357313 +0100
 @@ -128,6 +128,11 @@
  #define	NETDEV_TX_BUSY	1
  #endif
@@ -14,3 +14,220 @@ Index: madwifi-ng-r2834-20071106/ath/if_athvar.h
  #if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,23)
  static inline struct net_device *_alloc_netdev(int sizeof_priv, const char *mask,
  					       void (*setup)(struct net_device *))
+Index: madwifi-dfs-r3053/ath/if_ath_radar.c
+===================================================================
+--- madwifi-dfs-r3053.orig/ath/if_ath_radar.c	2007-12-13 05:25:10.538226007 +0100
++++ madwifi-dfs-r3053/ath/if_ath_radar.c	2007-12-13 05:25:12.850357768 +0100
+@@ -92,6 +92,13 @@
+ #define nofloat_pct(_value, _pct) \
+ 	( (_value * (1000 + _pct)) / 1000 )
+ 
++#ifndef list_for_each_entry_reverse
++#define list_for_each_entry_reverse(pos, head, member)			\
++	for (pos = list_entry((head)->prev, typeof(*pos), member);	\
++	     prefetch(pos->member.prev), &pos->member != (head); 	\
++	     pos = list_entry(pos->member.prev, typeof(*pos), member))
++#endif
++
+ struct radar_pattern_specification {
+ 	/* The name of the rule/specification (i.e. what did we detect) */
+ 	const char *name;
+Index: madwifi-dfs-r3053/ath/if_ath.c
+===================================================================
+--- madwifi-dfs-r3053.orig/ath/if_ath.c	2007-12-13 05:25:11.582285503 +0100
++++ madwifi-dfs-r3053/ath/if_ath.c	2007-12-13 05:25:12.854357994 +0100
+@@ -4595,6 +4595,46 @@
+ #undef USE_SHPREAMBLE
+ }
+ 
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,15)
++static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
++{
++	int ret;
++	unsigned long flags;
++
++	local_irq_save(flags);
++	ret = v->counter;
++	if (likely(ret == old))
++		v->counter = new;
++	local_irq_restore(flags);
++
++	return ret;
++}
++
++/**
++ * atomic_add_unless - add unless the number is a given value
++ * @v: pointer of type atomic_t
++ * @a: the amount to add to v...
++ * @u: ...unless v is equal to u.
++ *
++ * Atomically adds @a to @v, so long as it was not @u.
++ * Returns non-zero if @v was not @u, and zero otherwise.
++ */
++static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
++{
++	int c, old;
++	c = atomic_read(v);
++	for (;;) {
++		if (unlikely(c == (u)))
++			break;
++		old = atomic_cmpxchg((v), c, c + (a));
++		if (likely(old == c))
++			break;
++		c = old;
++	}
++	return c != (u);
++}
++#endif
++
+ /*
+  * Generate beacon frame and queue cab data for a VAP.
+  */
+Index: madwifi-dfs-r3053/net80211/ieee80211_scan_ap.c
+===================================================================
+--- madwifi-dfs-r3053.orig/net80211/ieee80211_scan_ap.c	2007-12-13 05:25:10.554226918 +0100
++++ madwifi-dfs-r3053/net80211/ieee80211_scan_ap.c	2007-12-13 05:25:12.858358223 +0100
+@@ -46,12 +46,16 @@
+ #include <linux/netdevice.h>
+ #include <linux/init.h>
+ #include <linux/delay.h>
+-#include <linux/sort.h>
+-
+ #include "if_media.h"
+ 
+ #include <net80211/ieee80211_var.h>
+ 
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,11)
++#include "sort.c"
++#else
++#include <linux/sort.h>
++#endif
++
+ #define	AP_PURGE_SCANS	2		/* age for purging entries (scans) */
+ #define RSSI_LPF_LEN	10
+ #define	RSSI_EP_MULTIPLIER	(1<<7)	/* pow2 to optimize out * and / */
+Index: madwifi-dfs-r3053/net80211/sort.c
+===================================================================
+--- /dev/null	1970-01-01 00:00:00.000000000 +0000
++++ madwifi-dfs-r3053/net80211/sort.c	2007-12-13 05:25:12.862358452 +0100
+@@ -0,0 +1,120 @@
++/*
++ * A fast, small, non-recursive O(nlog n) sort for the Linux kernel
++ *
++ * Jan 23 2005  Matt Mackall <mpm@selenic.com>
++ */
++
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/slab.h>
++
++static void u32_swap(void *a, void *b, int size)
++{
++	u32 t = *(u32 *)a;
++	*(u32 *)a = *(u32 *)b;
++	*(u32 *)b = t;
++}
++
++static void generic_swap(void *a, void *b, int size)
++{
++	char t;
++
++	do {
++		t = *(char *)a;
++		*(char *)a++ = *(char *)b;
++		*(char *)b++ = t;
++	} while (--size > 0);
++}
++
++/**
++ * sort - sort an array of elements
++ * @base: pointer to data to sort
++ * @num: number of elements
++ * @size: size of each element
++ * @cmp: pointer to comparison function
++ * @swap: pointer to swap function or NULL
++ *
++ * This function does a heapsort on the given array. You may provide a
++ * swap function optimized to your element type.
++ *
++ * Sorting time is O(n log n) both on average and worst-case. While
++ * qsort is about 20% faster on average, it suffers from exploitable
++ * O(n*n) worst-case behavior and extra memory requirements that make
++ * it less suitable for kernel use.
++ */
++
++static void sort(void *base, size_t num, size_t size,
++	  int (*cmp)(const void *, const void *),
++	  void (*swap)(void *, void *, int size))
++{
++	/* pre-scale counters for performance */
++	int i = (num/2 - 1) * size, n = num * size, c, r;
++
++	if (!swap)
++		swap = (size == 4 ? u32_swap : generic_swap);
++
++	/* heapify */
++	for ( ; i >= 0; i -= size) {
++		for (r = i; r * 2 + size < n; r  = c) {
++			c = r * 2 + size;
++			if (c < n - size && cmp(base + c, base + c + size) < 0)
++				c += size;
++			if (cmp(base + r, base + c) >= 0)
++				break;
++			swap(base + r, base + c, size);
++		}
++	}
++
++	/* sort */
++	for (i = n - size; i >= 0; i -= size) {
++		swap(base, base + i, size);
++		for (r = 0; r * 2 + size < i; r = c) {
++			c = r * 2 + size;
++			if (c < i - size && cmp(base + c, base + c + size) < 0)
++				c += size;
++			if (cmp(base + r, base + c) >= 0)
++				break;
++			swap(base + r, base + c, size);
++		}
++	}
++}
++
++EXPORT_SYMBOL(sort);
++
++#if 0
++/* a simple boot-time regression test */
++
++int cmpint(const void *a, const void *b)
++{
++	return *(int *)a - *(int *)b;
++}
++
++static int sort_test(void)
++{
++	int *a, i, r = 1;
++
++	a = kmalloc(1000 * sizeof(int), GFP_KERNEL);
++	BUG_ON(!a);
++
++	printk("testing sort()\n");
++
++	for (i = 0; i < 1000; i++) {
++		r = (r * 725861) % 6599;
++		a[i] = r;
++	}
++
++	sort(a, 1000, sizeof(int), cmpint, NULL);
++
++	for (i = 0; i < 999; i++)
++		if (a[i] > a[i+1]) {
++			printk("sort() failed!\n");
++			break;
++		}
++
++	kfree(a);
++
++	return 0;
++}
++
++module_init(sort_test);
++#endif