From d730c43695f0ac2889f44822b895ad18db076352 Mon Sep 17 00:00:00 2001
From: "Luis R. Rodriguez" <lrodriguez@atheros.com>
Date: Wed, 8 Jul 2009 16:25:06 -0700
Subject: [PATCH] compat-wireless-2.6 now compiles on 2.6.25

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
---
 compat/compat-2.6.26.h         | 42 ++++++++++++++++++++++++++++++++++
 compat/compat.diff             | 23 ++++++++++++++++---
 config.mk                      |  4 ++--
 scripts/gen-compat-autoconf.sh |  2 +-
 4 files changed, 65 insertions(+), 6 deletions(-)

diff --git a/compat/compat-2.6.26.h b/compat/compat-2.6.26.h
index b8cc70b28306..d21a3cd30253 100644
--- a/compat/compat-2.6.26.h
+++ b/compat/compat-2.6.26.h
@@ -10,7 +10,13 @@
 #include <linux/device.h>
 #include <linux/list.h>
 #include <linux/kernel.h>
+#include <net/net_namespace.h>
 
+/* This comes from include/linux/input.h */
+#define SW_RFKILL_ALL           0x03  /* rfkill master switch, type "any"
+					 set = radio enabled */
+
+/* From kernel.h */
 #define USHORT_MAX      ((u16)(~0U))
 #define SHORT_MAX       ((s16)(USHORT_MAX>>1))
 #define SHORT_MIN       (-SHORT_MAX - 1)
@@ -84,6 +90,42 @@ static inline const char *dev_name(struct device *dev)
 	__val = __val < __min ? __min: __val;   \
 	__val > __max ? __max: __val; })
 
+/* This comes from include/net/net_namespace.h */
+
+#ifdef CONFIG_NET_NS
+static inline
+int net_eq(const struct net *net1, const struct net *net2)
+{
+	return net1 == net2;
+}
+#else
+static inline
+int net_eq(const struct net *net1, const struct net *net2)
+{
+	return 1;
+}
+#endif
+
+/* This comes from include/linux/netdevice.h */
+
+/*
+ * Net namespace inlines
+ */
+static inline
+struct net *dev_net(const struct net_device *dev)
+{
+#ifdef CONFIG_NET_NS
+	/*
+	 * compat-wirelss backport note:
+	 * For older kernels we may just need to always return init_net,
+	 * not sure when we added dev->nd_net.
+	 */
+	return dev->nd_net;
+#else
+	return &init_net;
+#endif
+}
+
 
 /*
  * 2.6.26 added its own unaligned API which the
diff --git a/compat/compat.diff b/compat/compat.diff
index 6498b8ce27ae..edfabf6a515d 100644
--- a/compat/compat.diff
+++ b/compat/compat.diff
@@ -524,8 +524,8 @@
  
  
  /*
---- a/net/mac80211/iface.c	2009-07-07 13:29:43.631717242 -0700
-+++ b/net/mac80211/iface.c	2009-07-07 13:29:44.823680886 -0700
+--- a/net/mac80211/iface.c	2009-07-08 15:46:16.452255410 -0700
++++ b/net/mac80211/iface.c	2009-07-08 15:46:06.060257895 -0700
 @@ -643,6 +643,7 @@
  	WARN_ON(flushed);
  }
@@ -581,7 +581,24 @@
  		sdata->u.mntr_flags = MONITOR_FLAG_CONTROL |
  				      MONITOR_FLAG_OTHER_BSS;
  		break;
-@@ -812,6 +832,10 @@
+@@ -771,6 +791,8 @@
+ 	if (!ndev)
+ 		return -ENOMEM;
+ 
++/* This is an optimization, just ignore for older kernels */
++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26))
+ 	ndev->needed_headroom = local->tx_headroom +
+ 				4*6 /* four MAC addresses */
+ 				+ 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */
+@@ -779,6 +801,7 @@
+ 				- ETH_HLEN /* ethernet hard_header_len */
+ 				+ IEEE80211_ENCRYPT_HEADROOM;
+ 	ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM;
++#endif
+ 
+ 	ret = dev_alloc_name(ndev, ndev->name);
+ 	if (ret < 0)
+@@ -812,6 +835,10 @@
  	if (ret)
  		goto fail;
  
diff --git a/config.mk b/config.mk
index 505ab2571d7b..aa1a3fe000e9 100644
--- a/config.mk
+++ b/config.mk
@@ -25,8 +25,8 @@ endif
 ifeq ($(shell test -e $(KLIB_BUILD)/Makefile && echo yes),yes)
 KERNEL_SUBLEVEL = $(shell $(MAKE) -C $(KLIB_BUILD) kernelversion | sed -n 's/^2\.6\.\([0-9]\+\).*/\1/p')
 
-ifeq ($(shell test $(KERNEL_SUBLEVEL) -lt 26 && echo yes),yes)
-$(error "ERROR: You should use compat-wireless-2.6-old for older kernels, this one is for kernels >= 2.6.26")
+ifeq ($(shell test $(KERNEL_SUBLEVEL) -lt 25 && echo yes),yes)
+$(error "ERROR: You should use compat-wireless-2.6-old for older kernels, this one is for kernels >= 2.6.25")
 endif
 
 ifeq ($(CONFIG_CFG80211),y)
diff --git a/scripts/gen-compat-autoconf.sh b/scripts/gen-compat-autoconf.sh
index a39056f92705..d7fad822f5b8 100755
--- a/scripts/gen-compat-autoconf.sh
+++ b/scripts/gen-compat-autoconf.sh
@@ -11,7 +11,7 @@
 
 # This indicates which is the oldest kernel we support
 # Update this if you are adding support for older kernels.
-OLDEST_KERNEL_SUPPORTED="2.6.26"
+OLDEST_KERNEL_SUPPORTED="2.6.25"
 COMPAT_RELEASE="compat-release"
 KERNEL_RELEASE="git-describe"
 MULT_DEP_FILE=".compat_pivot_dep"
-- 
2.30.2