diff options
Diffstat (limited to 'src/libsystemd-network/include/systemd-network/dhcp-identifier.h')
-rw-r--r-- | src/libsystemd-network/include/systemd-network/dhcp-identifier.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/src/libsystemd-network/include/systemd-network/dhcp-identifier.h b/src/libsystemd-network/include/systemd-network/dhcp-identifier.h new file mode 100644 index 0000000000..802a0d6bc2 --- /dev/null +++ b/src/libsystemd-network/include/systemd-network/dhcp-identifier.h @@ -0,0 +1,74 @@ +#pragma once + +/*** + This file is part of systemd. + + Copyright (C) 2015 Tom Gundersen <teg@jklmen> + + 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 <systemd/sd-id128.h> + +#include "macro.h" +#include "sparse-endian.h" +#include "unaligned.h" + +typedef enum DUIDType { + DUID_TYPE_LLT = 1, + DUID_TYPE_EN = 2, + DUID_TYPE_LL = 3, + DUID_TYPE_UUID = 4, + _DUID_TYPE_MAX, + _DUID_TYPE_INVALID = -1, +} DUIDType; + +/* RFC 3315 section 9.1: + * A DUID can be no more than 128 octets long (not including the type code). + */ +#define MAX_DUID_LEN 128 + +/* https://tools.ietf.org/html/rfc3315#section-9.1 */ +struct duid { + be16_t type; + union { + struct { + /* DUID_TYPE_LLT */ + uint16_t htype; + uint32_t time; + uint8_t haddr[0]; + } _packed_ llt; + struct { + /* DUID_TYPE_EN */ + uint32_t pen; + uint8_t id[8]; + } _packed_ en; + struct { + /* DUID_TYPE_LL */ + int16_t htype; + uint8_t haddr[0]; + } _packed_ ll; + struct { + /* DUID_TYPE_UUID */ + sd_id128_t uuid; + } _packed_ uuid; + struct { + uint8_t data[MAX_DUID_LEN]; + } _packed_ raw; + }; +} _packed_; + +int dhcp_validate_duid_len(uint16_t duid_type, size_t duid_len); +int dhcp_identifier_set_duid_en(struct duid *duid, size_t *len); +int dhcp_identifier_set_iaid(int ifindex, uint8_t *mac, size_t mac_len, void *_id); |