src/shared/vlan-util.h

   1 #pragma once
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright 2016 Lennart Poettering
   7
   8   systemd is free software; you can redistribute it and/or modify it
   9   under the terms of the GNU Lesser General Public License as published by
  10   the Free Software Foundation; either version 2.1 of the License, or
  11   (at your option) any later version.
  12
  13   systemd is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   Lesser General Public License for more details.
  17
  18   You should have received a copy of the GNU Lesser General Public License
  19   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20 ***/
  21
  22 #include <stdbool.h>
  23 #include <inttypes.h>
  24
  25 #define VLANID_MAX 4094
  26 #define VLANID_INVALID UINT16_MAX
  27
  28 /* Note that we permit VLAN Id 0 here, as that is apparently OK by the Linux kernel */
  29 static inline bool vlanid_is_valid(uint16_t id) {
  30         return id <= VLANID_MAX;
  31 }
  32
  33 int parse_vlanid(const char *p, uint16_t *ret);
  34
  35 int config_parse_vlanid(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);