11a1589223
Files which are installed as-is (any .service and other unit files, .conf files, .policy files, etc), are left as is. My assumption is that SPDX identifiers are not yet that well known, so it's better to retain the extended header to avoid any doubt. I also kept any copyright lines. We can probably remove them, but it'd nice to obtain explicit acks from all involved authors before doing that.
102 lines
2.8 KiB
C
102 lines
2.8 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#pragma once
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/***
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This file is part of systemd.
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Copyright (C) 2013 Intel Corporation. All rights reserved.
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***/
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#include <netinet/ip.h>
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#include <netinet/udp.h>
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#include <stdint.h>
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#include "macro.h"
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#include "sparse-endian.h"
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struct DHCPMessage {
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uint8_t op;
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uint8_t htype;
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uint8_t hlen;
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uint8_t hops;
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be32_t xid;
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be16_t secs;
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be16_t flags;
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be32_t ciaddr;
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be32_t yiaddr;
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be32_t siaddr;
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be32_t giaddr;
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uint8_t chaddr[16];
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uint8_t sname[64];
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uint8_t file[128];
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be32_t magic;
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uint8_t options[0];
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} _packed_;
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typedef struct DHCPMessage DHCPMessage;
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struct DHCPPacket {
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struct iphdr ip;
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struct udphdr udp;
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DHCPMessage dhcp;
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} _packed_;
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typedef struct DHCPPacket DHCPPacket;
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#define DHCP_IP_SIZE (int32_t)(sizeof(struct iphdr))
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#define DHCP_IP_UDP_SIZE (int32_t)(sizeof(struct udphdr) + DHCP_IP_SIZE)
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#define DHCP_MESSAGE_SIZE (int32_t)(sizeof(DHCPMessage))
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#define DHCP_DEFAULT_MIN_SIZE 576 /* the minimum internet hosts must be able to receive */
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#define DHCP_MIN_OPTIONS_SIZE (DHCP_DEFAULT_MIN_SIZE - DHCP_IP_UDP_SIZE - DHCP_MESSAGE_SIZE)
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#define DHCP_MAGIC_COOKIE (uint32_t)(0x63825363)
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enum {
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DHCP_PORT_SERVER = 67,
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DHCP_PORT_CLIENT = 68,
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};
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enum DHCPState {
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DHCP_STATE_INIT = 0,
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DHCP_STATE_SELECTING = 1,
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DHCP_STATE_INIT_REBOOT = 2,
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DHCP_STATE_REBOOTING = 3,
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DHCP_STATE_REQUESTING = 4,
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DHCP_STATE_BOUND = 5,
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DHCP_STATE_RENEWING = 6,
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DHCP_STATE_REBINDING = 7,
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DHCP_STATE_STOPPED = 8,
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};
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typedef enum DHCPState DHCPState;
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enum {
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BOOTREQUEST = 1,
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BOOTREPLY = 2,
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};
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enum {
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DHCP_DISCOVER = 1,
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DHCP_OFFER = 2,
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DHCP_REQUEST = 3,
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DHCP_DECLINE = 4,
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DHCP_ACK = 5,
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DHCP_NAK = 6,
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DHCP_RELEASE = 7,
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DHCP_INFORM = 8,
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DHCP_FORCERENEW = 9,
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};
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enum {
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DHCP_OVERLOAD_FILE = 1,
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DHCP_OVERLOAD_SNAME = 2,
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};
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#define DHCP_MAX_FQDN_LENGTH 255
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enum {
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DHCP_FQDN_FLAG_S = (1 << 0),
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DHCP_FQDN_FLAG_O = (1 << 1),
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DHCP_FQDN_FLAG_E = (1 << 2),
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DHCP_FQDN_FLAG_N = (1 << 3),
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};
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