src/basic/arphrd-list.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <errno.h>
   4 #include <net/if_arp.h>
   5 #include <string.h>
   6
   7 #include "arphrd-list.h"
   8 #include "macro.h"
   9 #include "missing_network.h"
  10
  11 static const struct arphrd_name* lookup_arphrd(register const char *str, register GPERF_LEN_TYPE len);
  12
  13 #include "arphrd-from-name.h"
  14 #include "arphrd-to-name.h"
  15
  16 const char *arphrd_to_name(int id) {
  17
  18         if (id <= 0)
  19                 return NULL;
  20
  21         if ((size_t) id >= ELEMENTSOF(arphrd_names))
  22                 return NULL;
  23
  24         return arphrd_names[id];
  25 }
  26
  27 int arphrd_from_name(const char *name) {
  28         const struct arphrd_name *sc;
  29
  30         assert(name);
  31
  32         sc = lookup_arphrd(name, strlen(name));
  33         if (!sc)
  34                 return -EINVAL;
  35
  36         return sc->id;
  37 }
  38
  39 int arphrd_max(void) {
  40         return ELEMENTSOF(arphrd_names);
  41 }