From f173b5d9e29c2f107eee9ab1186af9fc1fc0ff31 Mon Sep 17 00:00:00 2001 From: Niklas Date: Mon, 11 Jul 2011 16:55:28 +0200 Subject: added the custom dhcpcd client to git. --- workspace/customdhcpcd/src/ipv4ll.c | 70 +++++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 workspace/customdhcpcd/src/ipv4ll.c (limited to 'workspace/customdhcpcd/src/ipv4ll.c') diff --git a/workspace/customdhcpcd/src/ipv4ll.c b/workspace/customdhcpcd/src/ipv4ll.c new file mode 100644 index 0000000..9742b9a --- /dev/null +++ b/workspace/customdhcpcd/src/ipv4ll.c @@ -0,0 +1,70 @@ +/* + * dhcpcd - DHCP client daemon + * Copyright 2006-2008 Roy Marples + * All rights reserved + + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +#include + +#include "config.h" +#include "arp.h" +#include "ipv4ll.h" + +#ifdef ENABLE_IPV4LL + +#ifndef ENABLE_ARP + # error IPV4LL requires ARP +#endif + +#define IPV4LL_LEASETIME 20 + +int ipv4ll_get_address (interface_t *iface, dhcp_t *dhcp) { + struct in_addr addr; + + for (;;) { + addr.s_addr = htonl (LINKLOCAL_ADDR | + (((uint32_t) abs ((int) random ()) + % 0xFD00) + 0x0100)); + errno = 0; + if (! arp_claim (iface, addr)) + break; + /* Our ARP may have been interrupted */ + if (errno) + return (-1); + } + + dhcp->address.s_addr = addr.s_addr; + dhcp->netmask.s_addr = htonl (LINKLOCAL_MASK); + dhcp->broadcast.s_addr = htonl (LINKLOCAL_BRDC); + + /* Finally configure some DHCP like lease times */ + dhcp->leasetime = IPV4LL_LEASETIME; + dhcp->renewaltime = (dhcp->leasetime * 0.5); + dhcp->rebindtime = (dhcp->leasetime * 0.875); + + return (0); +} + +#endif -- cgit v1.2.3-55-g7522