src/systemd/sd-ndisc-protocol.h

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2 #ifndef foosdndiscprotocolfoo
   3 #define foosdndiscprotocolfoo
   4
   5 /***
   6   systemd is free software; you can redistribute it and/or modify it
   7   under the terms of the GNU Lesser General Public License as published by
   8   the Free Software Foundation; either version 2.1 of the License, or
   9   (at your option) any later version.
  10
  11   systemd is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   Lesser General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   along with systemd; If not, see <https://www.gnu.org/licenses/>.
  18 ***/
  19
  20 #include "_sd-common.h"
  21
  22 _SD_BEGIN_DECLARATIONS;
  23
  24 /* Neighbor Discovery Options, RFC 4861, Section 4.6 and
  25  * https://www.iana.org/assignments/icmpv6-parameters/icmpv6-parameters.xhtml#icmpv6-parameters-5 */
  26 enum {
  27         SD_NDISC_OPTION_SOURCE_LL_ADDRESS  = 1,
  28         SD_NDISC_OPTION_TARGET_LL_ADDRESS  = 2,
  29         SD_NDISC_OPTION_PREFIX_INFORMATION = 3,
  30         SD_NDISC_OPTION_MTU                = 5,
  31         SD_NDISC_OPTION_ROUTE_INFORMATION  = 24,
  32         SD_NDISC_OPTION_RDNSS              = 25,
  33         SD_NDISC_OPTION_FLAGS_EXTENSION    = 26,
  34         SD_NDISC_OPTION_DNSSL              = 31,
  35         SD_NDISC_OPTION_CAPTIVE_PORTAL     = 37,
  36         SD_NDISC_OPTION_PREF64             = 38
  37 };
  38
  39 /* Route preference, RFC 4191, Section 2.1 */
  40 enum {
  41         SD_NDISC_PREFERENCE_LOW    = 3U,
  42         SD_NDISC_PREFERENCE_MEDIUM = 0U,
  43         SD_NDISC_PREFERENCE_HIGH   = 1U
  44 };
  45
  46 _SD_END_DECLARATIONS;
  47
  48 #endif