mirror of
https://github.com/rsmarples/dhcpcd.git
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73 lines
2.7 KiB
C
73 lines
2.7 KiB
C
/*
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* dhcpcd - DHCP client daemon
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* Copyright (c) 2006-2015 Roy Marples <roy@marples.name>
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* All rights reserved
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef IPV4LL_H
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#define IPV4LL_H
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#include "arp.h"
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extern const struct in_addr inaddr_llmask;
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extern const struct in_addr inaddr_llbcast;
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#define LINKLOCAL_ADDR 0xa9fe0000
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#define LINKLOCAL_MASK IN_CLASSB_NET
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#define LINKLOCAL_BRDC (LINKLOCAL_ADDR | ~LINKLOCAL_MASK)
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#ifndef IN_LINKLOCAL
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# define IN_LINKLOCAL(addr) ((addr & IN_CLASSB_NET) == LINKLOCAL_ADDR)
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#endif
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struct ipv4ll_state {
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struct in_addr addr;
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struct arp_state *arp;
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unsigned int conflicts;
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struct timespec defend;
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char randomstate[128];
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uint8_t down;
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};
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#define IPV4LL_STATE(ifp) \
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((struct ipv4ll_state *)(ifp)->if_data[IF_DATA_IPV4LL])
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#define IPV4LL_CSTATE(ifp) \
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((const struct ipv4ll_state *)(ifp)->if_data[IF_DATA_IPV4LL])
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#define IPV4LL_STATE_RUNNING(ifp) \
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(IPV4LL_CSTATE((ifp)) && !IPV4LL_CSTATE((ifp))->down && \
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IN_LINKLOCAL(ntohl(IPV4LL_CSTATE((ifp))->addr.s_addr)))
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struct rt* ipv4ll_subnet_route(const struct interface *);
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struct rt* ipv4ll_default_route(const struct interface *);
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ssize_t ipv4ll_env(char **, const char *, const struct interface *);
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void ipv4ll_start(void *);
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void ipv4ll_claimed(void *);
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void ipv4ll_handle_failure(void *);
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#define ipv4ll_free(ifp) ipv4ll_freedrop((ifp), 0);
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#define ipv4ll_drop(ifp) ipv4ll_freedrop((ifp), 1);
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void ipv4ll_freedrop(struct interface *, int);
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#endif
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