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.
66 lines
2 KiB
C
66 lines
2 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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#pragma once
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/***
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This file is part of systemd.
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Copyright 2014 Tom Gundersen <teg@jklm.no>
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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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enum {
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NLA_UNSPEC,
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NLA_META,
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NLA_U8,
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NLA_U16,
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NLA_U32,
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NLA_U64,
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NLA_STRING,
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NLA_IN_ADDR,
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NLA_ETHER_ADDR,
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NLA_CACHE_INFO,
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NLA_NESTED,
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NLA_UNION,
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};
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typedef struct NLTypeSystemUnion NLTypeSystemUnion;
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typedef struct NLTypeSystem NLTypeSystem;
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typedef struct NLType NLType;
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struct NLTypeSystemUnion {
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int num;
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uint16_t match;
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int (*lookup)(const char *);
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const NLTypeSystem *type_systems;
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};
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struct NLTypeSystem {
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uint16_t max;
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const NLType *types;
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};
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struct NLType {
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uint16_t type;
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size_t size;
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const NLTypeSystem *type_system;
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const NLTypeSystemUnion *type_system_union;
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};
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int type_system_get_type(const NLTypeSystem *type_system, const NLType **ret, uint16_t type);
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int type_system_get_type_system(const NLTypeSystem *type_system, const NLTypeSystem **ret, uint16_t type);
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int type_system_get_type_system_union(const NLTypeSystem *type_system, const NLTypeSystemUnion **ret, uint16_t type);
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int type_system_union_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, const char *key);
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