busybox/networking/udhcp/dhcpc.h
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   1/* vi: set sw=4 ts=4: */
   2/*
   3 * Licensed under GPLv2, see file LICENSE in this source tree.
   4 */
   5#ifndef UDHCP_DHCPC_H
   6#define UDHCP_DHCPC_H 1
   7
   8PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
   9
  10struct client_data_t {
  11        uint8_t client_mac[6];          /* Our mac address */
  12        IF_FEATURE_UDHCP_PORT(uint16_t port;)
  13        int ifindex;                    /* Index number of the interface to use */
  14        uint8_t opt_mask[256 / 8];      /* Bitmask of options to send (-O option) */
  15// ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ TODO: DHCPv6 has 16-bit option numbers
  16        const char *interface;          /* The name of the interface to use */
  17        char *pidfile;                  /* Optionally store the process ID */
  18        const char *script;             /* User script to run at dhcp events */
  19        struct option_set *options;     /* list of DHCP options to send to server */
  20        uint8_t *clientid;              /* Optional client id to use */
  21        uint8_t *vendorclass;           /* Optional vendor class-id to use */
  22        uint8_t *hostname;              /* Optional hostname to use */
  23        uint8_t *fqdn;                  /* Optional fully qualified domain name to use */
  24
  25        uint16_t first_secs;
  26        uint16_t last_secs;
  27
  28        int sockfd;
  29        smallint listen_mode;
  30        smallint state;
  31} FIX_ALIASING;
  32
  33/* server_config sits in 1st half of bb_common_bufsiz1 */
  34#define client_data (*(struct client_data_t*)(&bb_common_bufsiz1[COMMON_BUFSIZE / 2]))
  35
  36#if ENABLE_FEATURE_UDHCP_PORT
  37#define CLIENT_PORT  (client_data.port)
  38#define CLIENT_PORT6 (client_data.port)
  39#else
  40#define CLIENT_PORT  68
  41#define CLIENT_PORT6 546
  42#endif
  43
  44POP_SAVED_FUNCTION_VISIBILITY
  45
  46#endif
  47