1 files changed, 102 insertions, 0 deletions
diff --git a/src/libsystemd-network/dhcp-protocol.h b/src/libsystemd-network/dhcp-protocol.h
new file mode 100644
index 0000000..d7bb203
--- /dev/null
+++ b/src/libsystemd-network/dhcp-protocol.h
@@ -0,0 +1,102 @@
+/* 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 "sd-dhcp-protocol.h"
+
+#include "macro.h"
+#include "sparse-endian.h"
+#include "time-util.h"
+
+/* RFC 8925 - IPv6-Only Preferred Option for DHCPv4 3.4.
+ * MIN_V6ONLY_WAIT: The lower boundary for V6ONLY_WAIT. Value: 300 seconds */
+#define MIN_V6ONLY_WAIT_USEC (300U * USEC_PER_SEC)
+
+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[];
+} _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 {
+        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),
+};