Increase iwlist buffer size

[openwrt/svn-archive/archive.git] / package / wireless-tools / patches / 004-increase_iwlist_buffer.patch

diff --git a/package/wireless-tools/patches/004-increase_iwlist_buffer.patch b/package/wireless-tools/patches/004-increase_iwlist_buffer.patch
new file mode 100644 (file)
index 0000000..f2fdb12
--- /dev/null
+++ b/package/wireless-tools/patches/004-increase_iwlist_buffer.patch
@@ -0,0 +1,46 @@
+--- a/iwlist.c
++++ b/iwlist.c
+@@ -792,7 +792,8 @@ 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 < 0xFFFF))
+               {
+                 /* Some driver may return very large scan results, either
+                  * because there are many cells, or because they have many
+@@ -808,6 +809,10 @@ print_scanning_info(int           skfd,
+                 else
+                   buflen *= 2;
+ 
++                 /* wrq.u.data.length is 16 bits so max size is 65535 */
++                 if(buflen > 0xFFFF)
++                   buflen = 0xFFFF;
++
+                 /* Try again */
+                 goto realloc;
+               }
+@@ -2152,6 +2157,7 @@ main(int argc,
+   char **args;                        /* Command arguments */
+   int count;                  /* Number of arguments */
+   const iwlist_cmd *iwcmd;
++  int goterr = 0;
+ 
+   if(argc < 2)
+     iw_usage(1);
+@@ -2199,12 +2205,12 @@ main(int       argc,
+ 
+   /* do the actual work */
+   if (dev)
+-    (*iwcmd->fn)(skfd, dev, args, count);
++    goterr = (*iwcmd->fn)(skfd, dev, args, count);
+   else
+     iw_enum_devices(skfd, iwcmd->fn, args, count);
+ 
+   /* Close the socket. */
+   iw_sockets_close(skfd);
+ 
+-  return 0;
++  return goterr;
+ }