src/libsystemd-network/dhcp-server-internal.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 /***
   5   Copyright © 2013 Intel Corporation. All rights reserved.
   6 ***/
   7
   8 #include "sd-dhcp-server.h"
   9 #include "sd-event.h"
  10
  11 #include "dhcp-internal.h"
  12 #include "hashmap.h"
  13 #include "log.h"
  14 #include "util.h"
  15
  16 typedef struct DHCPClientId {
  17         size_t length;
  18         void *data;
  19 } DHCPClientId;
  20
  21 typedef struct DHCPLease {
  22         DHCPClientId client_id;
  23
  24         be32_t address;
  25         be32_t gateway;
  26         uint8_t chaddr[16];
  27         usec_t expiration;
  28 } DHCPLease;
  29
  30 struct sd_dhcp_server {
  31         unsigned n_ref;
  32
  33         sd_event *event;
  34         int event_priority;
  35         sd_event_source *receive_message;
  36         int fd;
  37         int fd_raw;
  38
  39         int ifindex;
  40         be32_t address;
  41         be32_t netmask;
  42         be32_t subnet;
  43         uint32_t pool_offset;
  44         uint32_t pool_size;
  45
  46         char *timezone;
  47
  48         struct in_addr *ntp, *dns;
  49         unsigned n_ntp, n_dns;
  50
  51         bool emit_router;
  52
  53         Hashmap *leases_by_client_id;
  54         DHCPLease **bound_leases;
  55         DHCPLease invalid_lease;
  56
  57         uint32_t max_lease_time, default_lease_time;
  58 };
  59
  60 typedef struct DHCPRequest {
  61         /* received message */
  62         DHCPMessage *message;
  63
  64         /* options */
  65         DHCPClientId client_id;
  66         size_t max_optlen;
  67         be32_t server_id;
  68         be32_t requested_ip;
  69         uint32_t lifetime;
  70 } DHCPRequest;
  71
  72 #define log_dhcp_server(client, fmt, ...) log_internal(LOG_DEBUG, 0, __FILE__, __LINE__, __func__, "DHCP SERVER: " fmt, ##__VA_ARGS__)
  73 #define log_dhcp_server_errno(client, error, fmt, ...) log_internal(LOG_DEBUG, error, __FILE__, __LINE__, __func__, "DHCP SERVER: " fmt, ##__VA_ARGS__)
  74
  75 int dhcp_server_handle_message(sd_dhcp_server *server, DHCPMessage *message,
  76                                size_t length);
  77 int dhcp_server_send_packet(sd_dhcp_server *server,
  78                             DHCPRequest *req, DHCPPacket *packet,
  79                             int type, size_t optoffset);
  80
  81 void client_id_hash_func(const void *p, struct siphash *state);
  82 int client_id_compare_func(const void *_a, const void *_b);