net/netfilter/ipset/pfxlen.c

   1 #include <linux/export.h>
   2 #include <linux/netfilter/ipset/pfxlen.h>
   3
   4 /*
   5  * Prefixlen maps for fast conversions, by Jan Engelhardt.
   6  */
   7
   8 #define E(a, b, c, d) \
   9         {.ip6 = { \
  10                 __constant_htonl(a), __constant_htonl(b), \
  11                 __constant_htonl(c), __constant_htonl(d), \
  12         } }
  13
  14 /*
  15  * This table works for both IPv4 and IPv6;
  16  * just use prefixlen_netmask_map[prefixlength].ip.
  17  */
  18 const union nf_inet_addr ip_set_netmask_map[] = {
  19         E(0x00000000, 0x00000000, 0x00000000, 0x00000000),
  20         E(0x80000000, 0x00000000, 0x00000000, 0x00000000),
  21         E(0xC0000000, 0x00000000, 0x00000000, 0x00000000),
  22         E(0xE0000000, 0x00000000, 0x00000000, 0x00000000),
  23         E(0xF0000000, 0x00000000, 0x00000000, 0x00000000),
  24         E(0xF8000000, 0x00000000, 0x00000000, 0x00000000),
  25         E(0xFC000000, 0x00000000, 0x00000000, 0x00000000),
  26         E(0xFE000000, 0x00000000, 0x00000000, 0x00000000),
  27         E(0xFF000000, 0x00000000, 0x00000000, 0x00000000),
  28         E(0xFF800000, 0x00000000, 0x00000000, 0x00000000),
  29         E(0xFFC00000, 0x00000000, 0x00000000, 0x00000000),
  30         E(0xFFE00000, 0x00000000, 0x00000000, 0x00000000),
  31         E(0xFFF00000, 0x00000000, 0x00000000, 0x00000000),
  32         E(0xFFF80000, 0x00000000, 0x00000000, 0x00000000),
  33         E(0xFFFC0000, 0x00000000, 0x00000000, 0x00000000),
  34         E(0xFFFE0000, 0x00000000, 0x00000000, 0x00000000),
  35         E(0xFFFF0000, 0x00000000, 0x00000000, 0x00000000),
  36         E(0xFFFF8000, 0x00000000, 0x00000000, 0x00000000),
  37         E(0xFFFFC000, 0x00000000, 0x00000000, 0x00000000),
  38         E(0xFFFFE000, 0x00000000, 0x00000000, 0x00000000),
  39         E(0xFFFFF000, 0x00000000, 0x00000000, 0x00000000),
  40         E(0xFFFFF800, 0x00000000, 0x00000000, 0x00000000),
  41         E(0xFFFFFC00, 0x00000000, 0x00000000, 0x00000000),
  42         E(0xFFFFFE00, 0x00000000, 0x00000000, 0x00000000),
  43         E(0xFFFFFF00, 0x00000000, 0x00000000, 0x00000000),
  44         E(0xFFFFFF80, 0x00000000, 0x00000000, 0x00000000),
  45         E(0xFFFFFFC0, 0x00000000, 0x00000000, 0x00000000),
  46         E(0xFFFFFFE0, 0x00000000, 0x00000000, 0x00000000),
  47         E(0xFFFFFFF0, 0x00000000, 0x00000000, 0x00000000),
  48         E(0xFFFFFFF8, 0x00000000, 0x00000000, 0x00000000),
  49         E(0xFFFFFFFC, 0x00000000, 0x00000000, 0x00000000),
  50         E(0xFFFFFFFE, 0x00000000, 0x00000000, 0x00000000),
  51         E(0xFFFFFFFF, 0x00000000, 0x00000000, 0x00000000),
  52         E(0xFFFFFFFF, 0x80000000, 0x00000000, 0x00000000),
  53         E(0xFFFFFFFF, 0xC0000000, 0x00000000, 0x00000000),
  54         E(0xFFFFFFFF, 0xE0000000, 0x00000000, 0x00000000),
  55         E(0xFFFFFFFF, 0xF0000000, 0x00000000, 0x00000000),
  56         E(0xFFFFFFFF, 0xF8000000, 0x00000000, 0x00000000),
  57         E(0xFFFFFFFF, 0xFC000000, 0x00000000, 0x00000000),
  58         E(0xFFFFFFFF, 0xFE000000, 0x00000000, 0x00000000),
  59         E(0xFFFFFFFF, 0xFF000000, 0x00000000, 0x00000000),
  60         E(0xFFFFFFFF, 0xFF800000, 0x00000000, 0x00000000),
  61         E(0xFFFFFFFF, 0xFFC00000, 0x00000000, 0x00000000),
  62         E(0xFFFFFFFF, 0xFFE00000, 0x00000000, 0x00000000),
  63         E(0xFFFFFFFF, 0xFFF00000, 0x00000000, 0x00000000),
  64         E(0xFFFFFFFF, 0xFFF80000, 0x00000000, 0x00000000),
  65         E(0xFFFFFFFF, 0xFFFC0000, 0x00000000, 0x00000000),
  66         E(0xFFFFFFFF, 0xFFFE0000, 0x00000000, 0x00000000),
  67         E(0xFFFFFFFF, 0xFFFF0000, 0x00000000, 0x00000000),
  68         E(0xFFFFFFFF, 0xFFFF8000, 0x00000000, 0x00000000),
  69         E(0xFFFFFFFF, 0xFFFFC000, 0x00000000, 0x00000000),
  70         E(0xFFFFFFFF, 0xFFFFE000, 0x00000000, 0x00000000),
  71         E(0xFFFFFFFF, 0xFFFFF000, 0x00000000, 0x00000000),
  72         E(0xFFFFFFFF, 0xFFFFF800, 0x00000000, 0x00000000),
  73         E(0xFFFFFFFF, 0xFFFFFC00, 0x00000000, 0x00000000),
  74         E(0xFFFFFFFF, 0xFFFFFE00, 0x00000000, 0x00000000),
  75         E(0xFFFFFFFF, 0xFFFFFF00, 0x00000000, 0x00000000),
  76         E(0xFFFFFFFF, 0xFFFFFF80, 0x00000000, 0x00000000),
  77         E(0xFFFFFFFF, 0xFFFFFFC0, 0x00000000, 0x00000000),
  78         E(0xFFFFFFFF, 0xFFFFFFE0, 0x00000000, 0x00000000),
  79         E(0xFFFFFFFF, 0xFFFFFFF0, 0x00000000, 0x00000000),
  80         E(0xFFFFFFFF, 0xFFFFFFF8, 0x00000000, 0x00000000),
  81         E(0xFFFFFFFF, 0xFFFFFFFC, 0x00000000, 0x00000000),
  82         E(0xFFFFFFFF, 0xFFFFFFFE, 0x00000000, 0x00000000),
  83         E(0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000),
  84         E(0xFFFFFFFF, 0xFFFFFFFF, 0x80000000, 0x00000000),
  85         E(0xFFFFFFFF, 0xFFFFFFFF, 0xC0000000, 0x00000000),
  86         E(0xFFFFFFFF, 0xFFFFFFFF, 0xE0000000, 0x00000000),
  87         E(0xFFFFFFFF, 0xFFFFFFFF, 0xF0000000, 0x00000000),
  88         E(0xFFFFFFFF, 0xFFFFFFFF, 0xF8000000, 0x00000000),
  89         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFC000000, 0x00000000),
  90         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFE000000, 0x00000000),
  91         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFF000000, 0x00000000),
  92         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFF800000, 0x00000000),
  93         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFC00000, 0x00000000),
  94         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFE00000, 0x00000000),
  95         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFF00000, 0x00000000),
  96         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFF80000, 0x00000000),
  97         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFC0000, 0x00000000),
  98         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFE0000, 0x00000000),
  99         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFF0000, 0x00000000),
 100         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFF8000, 0x00000000),
 101         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFC000, 0x00000000),
 102         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFE000, 0x00000000),
 103         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFF000, 0x00000000),
 104         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFF800, 0x00000000),
 105         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFC00, 0x00000000),
 106         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFE00, 0x00000000),
 107         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFF00, 0x00000000),
 108         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFF80, 0x00000000),
 109         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFC0, 0x00000000),
 110         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFE0, 0x00000000),
 111         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFF0, 0x00000000),
 112         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFF8, 0x00000000),
 113         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFC, 0x00000000),
 114         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFE, 0x00000000),
 115         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x00000000),
 116         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x80000000),
 117         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xC0000000),
 118         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xE0000000),
 119         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xF0000000),
 120         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xF8000000),
 121         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFC000000),
 122         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFE000000),
 123         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFF000000),
 124         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFF800000),
 125         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFC00000),
 126         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFE00000),
 127         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFF00000),
 128         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFF80000),
 129         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFC0000),
 130         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFE0000),
 131         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFF0000),
 132         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFF8000),
 133         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFC000),
 134         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFE000),
 135         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFF000),
 136         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFF800),
 137         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFC00),
 138         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFE00),
 139         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFF00),
 140         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFF80),
 141         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFC0),
 142         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFE0),
 143         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFF0),
 144         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFF8),
 145         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFC),
 146         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFE),
 147         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF),
 148 };
 149 EXPORT_SYMBOL_GPL(ip_set_netmask_map);
 150
 151 #undef  E
 152 #define E(a, b, c, d)                                           \
 153         {.ip6 = { (__force __be32) a, (__force __be32) b,       \
 154                   (__force __be32) c, (__force __be32) d,       \
 155         } }
 156
 157 /*
 158  * This table works for both IPv4 and IPv6;
 159  * just use prefixlen_hostmask_map[prefixlength].ip.
 160  */
 161 const union nf_inet_addr ip_set_hostmask_map[] = {
 162         E(0x00000000, 0x00000000, 0x00000000, 0x00000000),
 163         E(0x80000000, 0x00000000, 0x00000000, 0x00000000),
 164         E(0xC0000000, 0x00000000, 0x00000000, 0x00000000),
 165         E(0xE0000000, 0x00000000, 0x00000000, 0x00000000),
 166         E(0xF0000000, 0x00000000, 0x00000000, 0x00000000),
 167         E(0xF8000000, 0x00000000, 0x00000000, 0x00000000),
 168         E(0xFC000000, 0x00000000, 0x00000000, 0x00000000),
 169         E(0xFE000000, 0x00000000, 0x00000000, 0x00000000),
 170         E(0xFF000000, 0x00000000, 0x00000000, 0x00000000),
 171         E(0xFF800000, 0x00000000, 0x00000000, 0x00000000),
 172         E(0xFFC00000, 0x00000000, 0x00000000, 0x00000000),
 173         E(0xFFE00000, 0x00000000, 0x00000000, 0x00000000),
 174         E(0xFFF00000, 0x00000000, 0x00000000, 0x00000000),
 175         E(0xFFF80000, 0x00000000, 0x00000000, 0x00000000),
 176         E(0xFFFC0000, 0x00000000, 0x00000000, 0x00000000),
 177         E(0xFFFE0000, 0x00000000, 0x00000000, 0x00000000),
 178         E(0xFFFF0000, 0x00000000, 0x00000000, 0x00000000),
 179         E(0xFFFF8000, 0x00000000, 0x00000000, 0x00000000),
 180         E(0xFFFFC000, 0x00000000, 0x00000000, 0x00000000),
 181         E(0xFFFFE000, 0x00000000, 0x00000000, 0x00000000),
 182         E(0xFFFFF000, 0x00000000, 0x00000000, 0x00000000),
 183         E(0xFFFFF800, 0x00000000, 0x00000000, 0x00000000),
 184         E(0xFFFFFC00, 0x00000000, 0x00000000, 0x00000000),
 185         E(0xFFFFFE00, 0x00000000, 0x00000000, 0x00000000),
 186         E(0xFFFFFF00, 0x00000000, 0x00000000, 0x00000000),
 187         E(0xFFFFFF80, 0x00000000, 0x00000000, 0x00000000),
 188         E(0xFFFFFFC0, 0x00000000, 0x00000000, 0x00000000),
 189         E(0xFFFFFFE0, 0x00000000, 0x00000000, 0x00000000),
 190         E(0xFFFFFFF0, 0x00000000, 0x00000000, 0x00000000),
 191         E(0xFFFFFFF8, 0x00000000, 0x00000000, 0x00000000),
 192         E(0xFFFFFFFC, 0x00000000, 0x00000000, 0x00000000),
 193         E(0xFFFFFFFE, 0x00000000, 0x00000000, 0x00000000),
 194         E(0xFFFFFFFF, 0x00000000, 0x00000000, 0x00000000),
 195         E(0xFFFFFFFF, 0x80000000, 0x00000000, 0x00000000),
 196         E(0xFFFFFFFF, 0xC0000000, 0x00000000, 0x00000000),
 197         E(0xFFFFFFFF, 0xE0000000, 0x00000000, 0x00000000),
 198         E(0xFFFFFFFF, 0xF0000000, 0x00000000, 0x00000000),
 199         E(0xFFFFFFFF, 0xF8000000, 0x00000000, 0x00000000),
 200         E(0xFFFFFFFF, 0xFC000000, 0x00000000, 0x00000000),
 201         E(0xFFFFFFFF, 0xFE000000, 0x00000000, 0x00000000),
 202         E(0xFFFFFFFF, 0xFF000000, 0x00000000, 0x00000000),
 203         E(0xFFFFFFFF, 0xFF800000, 0x00000000, 0x00000000),
 204         E(0xFFFFFFFF, 0xFFC00000, 0x00000000, 0x00000000),
 205         E(0xFFFFFFFF, 0xFFE00000, 0x00000000, 0x00000000),
 206         E(0xFFFFFFFF, 0xFFF00000, 0x00000000, 0x00000000),
 207         E(0xFFFFFFFF, 0xFFF80000, 0x00000000, 0x00000000),
 208         E(0xFFFFFFFF, 0xFFFC0000, 0x00000000, 0x00000000),
 209         E(0xFFFFFFFF, 0xFFFE0000, 0x00000000, 0x00000000),
 210         E(0xFFFFFFFF, 0xFFFF0000, 0x00000000, 0x00000000),
 211         E(0xFFFFFFFF, 0xFFFF8000, 0x00000000, 0x00000000),
 212         E(0xFFFFFFFF, 0xFFFFC000, 0x00000000, 0x00000000),
 213         E(0xFFFFFFFF, 0xFFFFE000, 0x00000000, 0x00000000),
 214         E(0xFFFFFFFF, 0xFFFFF000, 0x00000000, 0x00000000),
 215         E(0xFFFFFFFF, 0xFFFFF800, 0x00000000, 0x00000000),
 216         E(0xFFFFFFFF, 0xFFFFFC00, 0x00000000, 0x00000000),
 217         E(0xFFFFFFFF, 0xFFFFFE00, 0x00000000, 0x00000000),
 218         E(0xFFFFFFFF, 0xFFFFFF00, 0x00000000, 0x00000000),
 219         E(0xFFFFFFFF, 0xFFFFFF80, 0x00000000, 0x00000000),
 220         E(0xFFFFFFFF, 0xFFFFFFC0, 0x00000000, 0x00000000),
 221         E(0xFFFFFFFF, 0xFFFFFFE0, 0x00000000, 0x00000000),
 222         E(0xFFFFFFFF, 0xFFFFFFF0, 0x00000000, 0x00000000),
 223         E(0xFFFFFFFF, 0xFFFFFFF8, 0x00000000, 0x00000000),
 224         E(0xFFFFFFFF, 0xFFFFFFFC, 0x00000000, 0x00000000),
 225         E(0xFFFFFFFF, 0xFFFFFFFE, 0x00000000, 0x00000000),
 226         E(0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000),
 227         E(0xFFFFFFFF, 0xFFFFFFFF, 0x80000000, 0x00000000),
 228         E(0xFFFFFFFF, 0xFFFFFFFF, 0xC0000000, 0x00000000),
 229         E(0xFFFFFFFF, 0xFFFFFFFF, 0xE0000000, 0x00000000),
 230         E(0xFFFFFFFF, 0xFFFFFFFF, 0xF0000000, 0x00000000),
 231         E(0xFFFFFFFF, 0xFFFFFFFF, 0xF8000000, 0x00000000),
 232         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFC000000, 0x00000000),
 233         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFE000000, 0x00000000),
 234         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFF000000, 0x00000000),
 235         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFF800000, 0x00000000),
 236         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFC00000, 0x00000000),
 237         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFE00000, 0x00000000),
 238         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFF00000, 0x00000000),
 239         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFF80000, 0x00000000),
 240         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFC0000, 0x00000000),
 241         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFE0000, 0x00000000),
 242         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFF0000, 0x00000000),
 243         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFF8000, 0x00000000),
 244         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFC000, 0x00000000),
 245         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFE000, 0x00000000),
 246         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFF000, 0x00000000),
 247         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFF800, 0x00000000),
 248         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFC00, 0x00000000),
 249         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFE00, 0x00000000),
 250         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFF00, 0x00000000),
 251         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFF80, 0x00000000),
 252         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFC0, 0x00000000),
 253         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFE0, 0x00000000),
 254         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFF0, 0x00000000),
 255         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFF8, 0x00000000),
 256         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFC, 0x00000000),
 257         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFE, 0x00000000),
 258         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x00000000),
 259         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x80000000),
 260         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xC0000000),
 261         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xE0000000),
 262         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xF0000000),
 263         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xF8000000),
 264         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFC000000),
 265         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFE000000),
 266         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFF000000),
 267         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFF800000),
 268         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFC00000),
 269         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFE00000),
 270         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFF00000),
 271         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFF80000),
 272         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFC0000),
 273         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFE0000),
 274         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFF0000),
 275         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFF8000),
 276         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFC000),
 277         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFE000),
 278         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFF000),
 279         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFF800),
 280         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFC00),
 281         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFE00),
 282         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFF00),
 283         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFF80),
 284         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFC0),
 285         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFE0),
 286         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFF0),
 287         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFF8),
 288         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFC),
 289         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFE),
 290         E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF),
 291 };
 292 EXPORT_SYMBOL_GPL(ip_set_hostmask_map);
 293
 294 /* Find the largest network which matches the range from left, in host order. */
 295 u32
 296 ip_set_range_to_cidr(u32 from, u32 to, u8 *cidr)
 297 {
 298         u32 last;
 299         u8 i;
 300
 301         for (i = 1; i < 32; i++) {
 302                 if ((from & ip_set_hostmask(i)) != from)
 303                         continue;
 304                 last = from | ~ip_set_hostmask(i);
 305                 if (!after(last, to)) {
 306                         *cidr = i;
 307                         return last;
 308                 }
 309         }
 310         *cidr = 32;
 311         return from;
 312 }
 313 EXPORT_SYMBOL_GPL(ip_set_range_to_cidr);