aba496a58a
Currently when both ipv4ll and dhcp are enabled, ipv4ll address (if one has been claimed) is removed when dhcp address is aquired. This is not the best thing to do since there might be clients unaware of the removal trying to communicate. This patch provides a smooth transition between ipv4ll and dhcp. If ipv4ll address was claimed [1] before dhcp, address is marked as deprecated. Deprecated address is still a valid address and packets can be received on it but address cannot be selected as a source address. If dhcp lease cannot be extended, then ipv4ll address is marked as valid again. [1] If there is no collision, claiming IPv4LL takes between 4 to 7 seconds.
54 lines
1.8 KiB
C
54 lines
1.8 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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#ifndef foosdipv4llfoo
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#define foosdipv4llfoo
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/***
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This file is part of systemd.
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Copyright (C) 2014 Axis Communications AB. All rights reserved.
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <stdbool.h>
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#include <netinet/in.h>
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#include <net/ethernet.h>
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#include "sd-event.h"
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enum {
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IPV4LL_EVENT_STOP = 0,
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IPV4LL_EVENT_BIND = 1,
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IPV4LL_EVENT_CONFLICT = 2,
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};
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typedef struct sd_ipv4ll sd_ipv4ll;
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typedef void (*sd_ipv4ll_cb_t)(sd_ipv4ll *ll, int event, void *userdata);
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int sd_ipv4ll_detach_event(sd_ipv4ll *ll);
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int sd_ipv4ll_attach_event(sd_ipv4ll *ll, sd_event *event, int priority);
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int sd_ipv4ll_get_address(sd_ipv4ll *ll, struct in_addr *address);
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int sd_ipv4ll_set_callback(sd_ipv4ll *ll, sd_ipv4ll_cb_t cb, void *userdata);
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int sd_ipv4ll_set_mac(sd_ipv4ll *ll, const struct ether_addr *addr);
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int sd_ipv4ll_set_index(sd_ipv4ll *ll, int interface_index);
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int sd_ipv4ll_set_address_seed(sd_ipv4ll *ll, uint8_t seed[8]);
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bool sd_ipv4ll_is_running(sd_ipv4ll *ll);
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int sd_ipv4ll_start(sd_ipv4ll *ll);
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int sd_ipv4ll_stop(sd_ipv4ll *ll);
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void sd_ipv4ll_free(sd_ipv4ll *ll);
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int sd_ipv4ll_new(sd_ipv4ll **ret);
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#endif
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