86 lines
3.2 KiB
C
86 lines
3.2 KiB
C
/*
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* libifupdown/interface.h
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* Purpose: interface management
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*
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* Copyright (c) 2020 Ariadne Conill <ariadne@dereferenced.org>
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* Copyright (c) 2020 Maximilian Wilhelm <max@sdn.clinic>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* This software is provided 'as is' and without any warranty, express or
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* implied. In no event shall the authors be liable for any damages arising
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* from the use of this software.
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*/
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#ifndef LIBIFUPDOWN_INTERFACE_H__GUARD
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#define LIBIFUPDOWN_INTERFACE_H__GUARD
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#include <arpa/inet.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include "libifupdown/dict.h"
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/*
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* Addresses are stored in a buffer with netmask and type.
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*/
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struct lif_address {
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unsigned char addr_buf[sizeof(struct in6_addr)];
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size_t netmask;
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int domain;
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};
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/*
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* Interfaces are contained in a dictionary, with the interfaces mapped by
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* interface name to their `struct lif_interface`.
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*
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* Interfaces are simply upserted as needed. This allows for `auto eth0`
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* to create a placeholder `struct lif_interface` with auto set to true.
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*
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* Configuration variables are simply stored in a `struct lif_dict`, which
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* can act as a multidict.
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*/
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struct lif_interface {
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char *ifname;
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bool is_auto;
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bool is_bridge;
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bool is_bond;
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bool is_template;
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bool is_pending;
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bool is_explicit;
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bool has_config_error; /* error found in interface configuration */
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struct lif_dict vars;
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size_t refcount; /* > 0 if up, else 0 */
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size_t rdepends_count; /* > 0 if any reverse dependency */
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};
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#define LIF_INTERFACE_COLLECTION_FOREACH(iter, collection) \
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LIF_DICT_FOREACH((iter), (collection))
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#define LIF_INTERFACE_COLLECTION_FOREACH_SAFE(iter, iter_next, collection) \
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LIF_DICT_FOREACH_SAFE((iter), (iter_next), (collection))
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extern bool lif_address_parse(struct lif_address *address, const char *presentation);
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extern bool lif_address_unparse(const struct lif_address *address, char *buf, size_t buflen, bool with_netmask);
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extern bool lif_address_format_cidr(const struct lif_interface *iface, struct lif_dict_entry *entry, char *buf, size_t buflen);
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extern void lif_interface_init(struct lif_interface *interface, const char *ifname);
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extern bool lif_interface_address_add(struct lif_interface *interface, const char *address);
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extern void lif_interface_address_delete(struct lif_interface *interface, const char *address);
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extern void lif_interface_fini(struct lif_interface *interface);
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extern void lif_interface_use_executor(struct lif_interface *interface, const char *executor);
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extern void lif_interface_collection_init(struct lif_dict *collection);
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extern void lif_interface_collection_fini(struct lif_dict *collection);
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extern struct lif_interface *lif_interface_collection_find(struct lif_dict *collection, const char *ifname);
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extern struct lif_interface *lif_interface_collection_upsert(struct lif_dict *collection, struct lif_interface *interface);
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extern bool lif_interface_collection_inherit(struct lif_interface *interface, struct lif_interface *parent);
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extern void lif_interface_collection_delete(struct lif_dict *collection, struct lif_interface *interface);
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#endif
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