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-rw-r--r--src/libsystemd-network/dhcp-protocol.h109
1 files changed, 109 insertions, 0 deletions
diff --git a/src/libsystemd-network/dhcp-protocol.h b/src/libsystemd-network/dhcp-protocol.h
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+++ b/src/libsystemd-network/dhcp-protocol.h
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+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+/***
+ Copyright © 2013 Intel Corporation. All rights reserved.
+***/
+
+#include <netinet/ip.h>
+#include <netinet/udp.h>
+#include <stdint.h>
+
+#include "macro.h"
+#include "sparse-endian.h"
+
+struct DHCPMessage {
+ uint8_t op;
+ uint8_t htype;
+ uint8_t hlen;
+ uint8_t hops;
+ be32_t xid;
+ be16_t secs;
+ be16_t flags;
+ be32_t ciaddr;
+ be32_t yiaddr;
+ be32_t siaddr;
+ be32_t giaddr;
+ uint8_t chaddr[16];
+ uint8_t sname[64];
+ uint8_t file[128];
+ be32_t magic;
+ uint8_t options[0];
+} _packed_;
+
+typedef struct DHCPMessage DHCPMessage;
+
+struct DHCPPacket {
+ struct iphdr ip;
+ struct udphdr udp;
+ DHCPMessage dhcp;
+} _packed_;
+
+typedef struct DHCPPacket DHCPPacket;
+
+#define DHCP_IP_SIZE (int32_t)(sizeof(struct iphdr))
+#define DHCP_IP_UDP_SIZE (int32_t)(sizeof(struct udphdr) + DHCP_IP_SIZE)
+#define DHCP_HEADER_SIZE (int32_t)(sizeof(DHCPMessage))
+#define DHCP_MIN_MESSAGE_SIZE 576 /* the minimum internet hosts must be able to receive, see RFC 2132 Section 9.10 */
+#define DHCP_MIN_OPTIONS_SIZE (DHCP_MIN_MESSAGE_SIZE - DHCP_HEADER_SIZE)
+#define DHCP_MIN_PACKET_SIZE (DHCP_MIN_MESSAGE_SIZE + DHCP_IP_UDP_SIZE)
+#define DHCP_MAGIC_COOKIE (uint32_t)(0x63825363)
+
+enum {
+ DHCP_PORT_SERVER = 67,
+ DHCP_PORT_CLIENT = 68,
+};
+
+enum DHCPState {
+ DHCP_STATE_INIT = 0,
+ DHCP_STATE_SELECTING = 1,
+ DHCP_STATE_INIT_REBOOT = 2,
+ DHCP_STATE_REBOOTING = 3,
+ DHCP_STATE_REQUESTING = 4,
+ DHCP_STATE_BOUND = 5,
+ DHCP_STATE_RENEWING = 6,
+ DHCP_STATE_REBINDING = 7,
+ DHCP_STATE_STOPPED = 8,
+};
+
+typedef enum DHCPState DHCPState;
+
+enum {
+ BOOTREQUEST = 1,
+ BOOTREPLY = 2,
+};
+
+enum {
+ DHCP_DISCOVER = 1, /* [RFC2132] */
+ DHCP_OFFER = 2, /* [RFC2132] */
+ DHCP_REQUEST = 3, /* [RFC2132] */
+ DHCP_DECLINE = 4, /* [RFC2132] */
+ DHCP_ACK = 5, /* [RFC2132] */
+ DHCP_NAK = 6, /* [RFC2132] */
+ DHCP_RELEASE = 7, /* [RFC2132] */
+ DHCP_INFORM = 8, /* [RFC2132] */
+ DHCP_FORCERENEW = 9, /* [RFC3203] */
+ DHCPLEASEQUERY = 10, /* [RFC4388] */
+ DHCPLEASEUNASSIGNED = 11, /* [RFC4388] */
+ DHCPLEASEUNKNOWN = 12, /* [RFC4388] */
+ DHCPLEASEACTIVE = 13, /* [RFC4388] */
+ DHCPBULKLEASEQUERY = 14, /* [RFC6926] */
+ DHCPLEASEQUERYDONE = 15, /* [RFC6926] */
+ DHCPACTIVELEASEQUERY = 16, /* [RFC7724] */
+ DHCPLEASEQUERYSTATUS = 17, /* [RFC7724] */
+ DHCPTLS = 18, /* [RFC7724] */
+};
+
+enum {
+ DHCP_OVERLOAD_FILE = 1,
+ DHCP_OVERLOAD_SNAME = 2,
+};
+
+#define DHCP_MAX_FQDN_LENGTH 255
+
+enum {
+ DHCP_FQDN_FLAG_S = (1 << 0),
+ DHCP_FQDN_FLAG_O = (1 << 1),
+ DHCP_FQDN_FLAG_E = (1 << 2),
+ DHCP_FQDN_FLAG_N = (1 << 3),
+};