Mon Aug 27 00:04:01 UTC 2012

2 files changed, 59 insertions, 7 deletions

diff --git a/core/wireless_tools/PKGBUILD b/core/wireless_tools/PKGBUILD
index cb6de3cd9..6c377cc12 100644
--- a/core/wireless_tools/PKGBUILD
+++ b/core/wireless_tools/PKGBUILD
@@ -1,21 +1,24 @@
-# $Id: PKGBUILD 147661 2012-01-26 03:32:18Z bisson $
+# $Id: PKGBUILD 165574 2012-08-25 15:33:20Z bisson $
 # Maintainer: Gaetan Bisson <bisson@archlinux.org>
 # Contributor: Giovanni Scafora <giovanni@archlinux.org>
 # Contributor: Jason Chu <jchu@xentac.net>
 
 pkgname=wireless_tools
 pkgver=29
-pkgrel=6
-pkgdesc='Wireless Tools'
+pkgrel=7
+pkgdesc='Tools allowing to manipulate the Wireless Extensions'
 url='http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/Tools.html'
-arch=('i686' 'x86_64')
 license=('GPL')
-source=("http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/${pkgname}.${pkgver}.tar.gz")
-sha1sums=('22040ac1497f4c5f8ddeca365591b01ae3475710')
+arch=('i686' 'x86_64')
+source=("http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/${pkgname}.${pkgver}.tar.gz"
+        'dense.patch')
+sha1sums=('22040ac1497f4c5f8ddeca365591b01ae3475710'
+          '5c297c7dff1ec1d2a3d918c20622ab3c6daf5b72')
 
 build() {
 	cd "${srcdir}/${pkgname}.${pkgver}"
-	make CFLAGS="${CFLAGS} -Wall -Wextra -I." LDFLAGS="${LDFLAGS}"
+	patch -p1 -i ../dense.patch # FS#15363
+	make CFLAGS="${CFLAGS} -I." LDFLAGS="${LDFLAGS}"
 }
 
 package() {
diff --git a/core/wireless_tools/dense.patch b/core/wireless_tools/dense.patch
new file mode 100644
index 000000000..85182cd82
--- /dev/null
+++ b/core/wireless_tools/dense.patch
@@ -0,0 +1,49 @@
+The length field of wext data (iw_point.data) is 16 bits. The largest
+value is thus 65535. During the attempts to increase buffer size the
+buffer starts at 4096 and is doubled after each failure to fill. From the
+time this length reaches 65536 it is effectively zero. We thus loose all
+potential space from 32768 to 65535.
+
+This problem is clear when scanning in a RF dense environment.
+
+Without this patch:
+~$ iwlist wlan0 scan
+print_scanning_info: Allocation failed
+
+With this patch:
+~$ iwlist wlan0 scan | grep Cell | wc -l
+86
+
+Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
+
+---
+A similar patch was recently created to fix wpa_supplicant.
+
+I could not find a source code repo for this code and created this patch
+against version 30-pre7 downloaded from 
+http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/Tools.html
+
+diff -uprN wireless_tools_org/wireless_tools.30/iwlist.c wireless_tools.30/iwlist.c
+--- wireless_tools_org/wireless_tools.30/iwlist.c	2008-01-16 17:45:41.000000000 -0800
++++ wireless_tools.30/iwlist.c	2009-02-12 14:16:48.000000000 -0800
+@@ -800,7 +800,7 @@ print_scanning_info(int		skfd,
+ 	  if(iw_get_ext(skfd, ifname, SIOCGIWSCAN, &wrq) < 0)
+ 	    {
+ 	      /* Check if buffer was too small (WE-17 only) */
+-	      if((errno == E2BIG) && (range.we_version_compiled > 16))
++	      if((errno == E2BIG) && (range.we_version_compiled > 16) && (buflen < 65535))
+ 		{
+ 		  /* Some driver may return very large scan results, either
+ 		   * because there are many cells, or because they have many
+@@ -816,6 +816,10 @@ print_scanning_info(int		skfd,
+ 		  else
+ 		    buflen *= 2;
+ 
++		  /* wrq.u.data.length is 16 bits so max size is 65535 */
++		  if(buflen > 65535)
++		    buflen = 65535;
++
+ 		  /* Try again */
+ 		  goto realloc;
+ 		}
+