isc dhcpd 源码 分析

 iso_copy_out_to_desktop.pl "sdb1:\sdb1\_xfile\2013_all_iso\_xfile_2013_03_04.iso\\_xfile_2013_04\\_misc\\isc_dhcp_chm_all_version\\dhcp-4.2.1.chm"

#==========================================================================
main
    initialize_common_option_spaces ();
    initialize_server_option_spaces ();

    add_enumeration (&ddns_styles);
    add_enumeration (&syslog_enum);
    add_enumeration (&ldap_methods);
    add_enumeration (&ldap_ssl_usage_enum);
    add_enumeration (&ldap_tls_reqcert_enum);
    add_enumeration (&ldap_tls_crlcheck_enum);

620 dhcp_interface_setup_hook = dhcpd_interface_setup_hook;
621 bootp_packet_handler = do_packet;
623 dhcpv6_packet_handler = do_packet6;


    db_startup (lftest);

    discover_interfaces(DISCOVER_SERVER);

    dispatch ();
        isc_app_ctxrun(dhcp_gbl_ctx.actx);
        


#==========================================================================
do_packet
3722    packet_dereference (&decoded_packet, MDL);
3738    lookup_option (&dhcp_universe,
3759        dhcp (decoded_packet);
 225                 dhcpdiscover (packet, ms_nulltp);
 229                 dhcprequest (packet, ms_nulltp, lease);
 233                 dhcprelease (packet, ms_nulltp);
 237                 dhcpdecline (packet, ms_nulltp);
 241                 dhcpinform (packet, ms_nulltp);

3761        bootp (decoded_packet);
 159         option_state_allocate (&options, MDL);
 162         execute_statements_in_scope ((struct binding_value **)0,
 179         execute_statements_in_scope ((struct binding_value **)0,
 186         lookup_option (&server_universe, options, SV_ALLOW_BOOTP)
 328         evaluate_option_cache (&d1, packet, lease,
 410         send_packet (packet -> interface,