src/basic/ether-addr-util.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 /***
   5   This file is part of systemd.
   6
   7   Copyright 2014 Tom Gundersen
   8
   9   systemd is free software; you can redistribute it and/or modify it
  10   under the terms of the GNU Lesser General Public License as published by
  11   the Free Software Foundation; either version 2.1 of the License, or
  12   (at your option) any later version.
  13
  14   systemd is distributed in the hope that it will be useful, but
  15   WITHOUT ANY WARRANTY; without even the implied warranty of
  16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17   Lesser General Public License for more details.
  18
  19   You should have received a copy of the GNU Lesser General Public License
  20   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  21 ***/
  22
  23 #include <net/ethernet.h>
  24 #include <stdbool.h>
  25
  26 #define ETHER_ADDR_FORMAT_STR "%02X%02X%02X%02X%02X%02X"
  27 #define ETHER_ADDR_FORMAT_VAL(x) (x).ether_addr_octet[0], (x).ether_addr_octet[1], (x).ether_addr_octet[2], (x).ether_addr_octet[3], (x).ether_addr_octet[4], (x).ether_addr_octet[5]
  28
  29 #define ETHER_ADDR_TO_STRING_MAX (3*6)
  30 char* ether_addr_to_string(const struct ether_addr *addr, char buffer[ETHER_ADDR_TO_STRING_MAX]);
  31
  32 bool ether_addr_equal(const struct ether_addr *a, const struct ether_addr *b);
  33
  34 #define ETHER_ADDR_NULL ((const struct ether_addr){})
  35
  36 static inline bool ether_addr_is_null(const struct ether_addr *addr) {
  37         return ether_addr_equal(addr, &ETHER_ADDR_NULL);
  38 }
  39
  40 int ether_addr_from_string(const char *s, struct ether_addr *ret, size_t *offset);