package/network/utils/wireless-tools/patches/004-increase_iwlist_buffer.patch

   1 --- a/iwlist.c
   2 +++ b/iwlist.c
   3 @@ -792,7 +792,8 @@ print_scanning_info(int             skfd,
   4           if(iw_get_ext(skfd, ifname, SIOCGIWSCAN, &wrq) < 0)
   5             {
   6               /* Check if buffer was too small (WE-17 only) */
   7 -             if((errno == E2BIG) && (range.we_version_compiled > 16))
   8 +             if((errno == E2BIG) && (range.we_version_compiled > 16)
   9 +                && (buflen < 0xFFFF))
  10                 {
  11                   /* Some driver may return very large scan results, either
  12                    * because there are many cells, or because they have many
  13 @@ -808,6 +809,10 @@ print_scanning_info(int            skfd,
  14                   else
  15                     buflen *= 2;
  16
  17 +                 /* wrq.u.data.length is 16 bits so max size is 65535 */
  18 +                 if(buflen > 0xFFFF)
  19 +                   buflen = 0xFFFF;
  20 +
  21                   /* Try again */
  22                   goto realloc;
  23                 }
  24 @@ -2152,6 +2157,7 @@ main(int  argc,
  25    char **args;                 /* Command arguments */
  26    int count;                   /* Number of arguments */
  27    const iwlist_cmd *iwcmd;
  28 +  int goterr = 0;
  29
  30    if(argc < 2)
  31      iw_usage(1);
  32 @@ -2199,12 +2205,12 @@ main(int        argc,
  33
  34    /* do the actual work */
  35    if (dev)
  36 -    (*iwcmd->fn)(skfd, dev, args, count);
  37 +    goterr = (*iwcmd->fn)(skfd, dev, args, count);
  38    else
  39      iw_enum_devices(skfd, iwcmd->fn, args, count);
  40
  41    /* Close the socket. */
  42    iw_sockets_close(skfd);
  43
  44 -  return 0;
  45 +  return goterr;
  46  }