src/libsystemd-basic/include/systemd-basic/ether-addr-util.h


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#pragma once

/***
  This file is part of systemd.

  Copyright 2014 Tom Gundersen

  systemd is free software; you can redistribute it and/or modify it
  under the terms of the GNU Lesser General Public License as published by
  the Free Software Foundation; either version 2.1 of the License, or
  (at your option) any later version.

  systemd is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public License
  along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/

#include <net/ethernet.h>
#include <stdbool.h>

#define ETHER_ADDR_FORMAT_STR "%02X%02X%02X%02X%02X%02X"
#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]

#define ETHER_ADDR_TO_STRING_MAX (3*6)
char* ether_addr_to_string(const struct ether_addr *addr, char buffer[ETHER_ADDR_TO_STRING_MAX]);

bool ether_addr_equal(const struct ether_addr *a, const struct ether_addr *b);

#define ETHER_ADDR_NULL ((const struct ether_addr){})

static inline bool ether_addr_is_null(const struct ether_addr *addr) {
        return ether_addr_equal(addr, &ETHER_ADDR_NULL);
}

int ether_addr_from_string(const char *s, struct ether_addr *ret, size_t *offset);