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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2013 Red Hat, Inc.
*/
#ifndef __NETWORKMANAGER_NDISC_H__
#define __NETWORKMANAGER_NDISC_H__
#include <stdlib.h>
#include <netinet/in.h>
#include <linux/if_addr.h>
#include "nm-setting-ip6-config.h"
#include "NetworkManagerUtils.h"
#include "platform/nm-platform.h"
#include "platform/nmp-object.h"
#define NM_RA_TIMEOUT_DEFAULT ((guint32) 0)
#define NM_RA_TIMEOUT_INFINITY ((guint32) G_MAXINT32)
#define NM_TYPE_NDISC (nm_ndisc_get_type ())
#define NM_NDISC(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), NM_TYPE_NDISC, NMNDisc))
#define NM_NDISC_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), NM_TYPE_NDISC, NMNDiscClass))
#define NM_IS_NDISC(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), NM_TYPE_NDISC))
#define NM_IS_NDISC_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), NM_TYPE_NDISC))
#define NM_NDISC_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), NM_TYPE_NDISC, NMNDiscClass))
#define NM_NDISC_PLATFORM "platform"
#define NM_NDISC_IFINDEX "ifindex"
#define NM_NDISC_IFNAME "ifname"
#define NM_NDISC_NETWORK_ID "network-id"
#define NM_NDISC_ADDR_GEN_MODE "addr-gen-mode"
#define NM_NDISC_STABLE_TYPE "stable-type"
#define NM_NDISC_NODE_TYPE "node-type"
#define NM_NDISC_MAX_ADDRESSES "max-addresses"
#define NM_NDISC_RA_TIMEOUT "ra-timeout"
#define NM_NDISC_ROUTER_SOLICITATIONS "router-solicitations"
#define NM_NDISC_ROUTER_SOLICITATION_INTERVAL "router-solicitation-interval"
#define NM_NDISC_CONFIG_RECEIVED "config-received"
#define NM_NDISC_RA_TIMEOUT_SIGNAL "ra-timeout-signal"
typedef enum {
NM_NDISC_DHCP_LEVEL_UNKNOWN,
NM_NDISC_DHCP_LEVEL_NONE,
NM_NDISC_DHCP_LEVEL_OTHERCONF,
NM_NDISC_DHCP_LEVEL_MANAGED
} NMNDiscDHCPLevel;
/* we rely on the fact that NM_NDISC_INFINITY is the largest possible
* time duration (G_MAXUINT32) and that the range of finite values
* goes from 0 to G_MAXUINT32-1. */
#define NM_NDISC_INFINITY G_MAXUINT32
struct _NMNDiscGateway {
struct in6_addr address;
guint32 timestamp;
guint32 lifetime;
NMIcmpv6RouterPref preference;
};
typedef struct _NMNDiscGateway NMNDiscGateway;
struct _NMNDiscAddress {
struct in6_addr address;
guint8 dad_counter;
guint32 timestamp;
guint32 lifetime;
guint32 preferred;
};
typedef struct _NMNDiscAddress NMNDiscAddress;
struct _NMNDiscRoute {
struct in6_addr network;
guint8 plen;
struct in6_addr gateway;
guint32 timestamp;
guint32 lifetime;
NMIcmpv6RouterPref preference;
};
typedef struct _NMNDiscRoute NMNDiscRoute;
typedef struct {
struct in6_addr address;
guint32 timestamp;
guint32 lifetime;
} NMNDiscDNSServer;
typedef struct {
char *domain;
guint32 timestamp;
guint32 lifetime;
} NMNDiscDNSDomain;
typedef enum {
NM_NDISC_CONFIG_NONE = 0,
NM_NDISC_CONFIG_DHCP_LEVEL = 1 << 0,
NM_NDISC_CONFIG_GATEWAYS = 1 << 1,
NM_NDISC_CONFIG_ADDRESSES = 1 << 2,
NM_NDISC_CONFIG_ROUTES = 1 << 3,
NM_NDISC_CONFIG_DNS_SERVERS = 1 << 4,
NM_NDISC_CONFIG_DNS_DOMAINS = 1 << 5,
NM_NDISC_CONFIG_HOP_LIMIT = 1 << 6,
NM_NDISC_CONFIG_MTU = 1 << 7,
NM_NDISC_CONFIG_REACHABLE_TIME = 1 << 8,
NM_NDISC_CONFIG_RETRANS_TIMER = 1 << 9,
} NMNDiscConfigMap;
typedef enum {
NM_NDISC_NODE_TYPE_INVALID,
NM_NDISC_NODE_TYPE_HOST,
NM_NDISC_NODE_TYPE_ROUTER,
} NMNDiscNodeType;
#define NM_NDISC_MAX_ADDRESSES_DEFAULT 16
#define NM_NDISC_ROUTER_SOLICITATIONS_DEFAULT 3 /* RFC4861 MAX_RTR_SOLICITATIONS */
#define NM_NDISC_ROUTER_SOLICITATION_INTERVAL_DEFAULT 4 /* RFC4861 RTR_SOLICITATION_INTERVAL */
#define NM_NDISC_ROUTER_ADVERTISEMENTS_DEFAULT 3 /* RFC4861 MAX_INITIAL_RTR_ADVERTISEMENTS */
#define NM_NDISC_ROUTER_ADVERT_DELAY 3 /* RFC4861 MIN_DELAY_BETWEEN_RAS */
#define NM_NDISC_ROUTER_ADVERT_INITIAL_INTERVAL 16 /* RFC4861 MAX_INITIAL_RTR_ADVERT_INTERVAL */
#define NM_NDISC_ROUTER_ADVERT_DELAY_MS 500 /* RFC4861 MAX_RA_DELAY_TIME */
#define NM_NDISC_ROUTER_ADVERT_MAX_INTERVAL 600 /* RFC4861 MaxRtrAdvInterval default */
#define NM_NDISC_ROUTER_LIFETIME 900 /* 1.5 * NM_NDISC_ROUTER_ADVERT_MAX_INTERVAL */
struct _NMNDiscPrivate;
struct _NMNDiscDataInternal;
typedef struct {
NMNDiscDHCPLevel dhcp_level;
guint32 mtu;
int hop_limit;
guint32 reachable_time_ms;
guint32 retrans_timer_ms;
guint gateways_n;
guint addresses_n;
guint routes_n;
guint dns_servers_n;
guint dns_domains_n;
const NMNDiscGateway *gateways;
const NMNDiscAddress *addresses;
const NMNDiscRoute *routes;
const NMNDiscDNSServer *dns_servers;
const NMNDiscDNSDomain *dns_domains;
} NMNDiscData;
/**
* NMNDisc:
*
* Interface-specific structure that handles incoming router advertisements,
* caches advertised items and removes them when they are obsolete.
*/
typedef struct {
GObject parent;
union {
struct _NMNDiscPrivate *_priv;
struct _NMNDiscDataInternal *rdata;
};
} NMNDisc;
typedef struct {
GObjectClass parent;
void (*start) (NMNDisc *ndisc);
gboolean (*send_rs) (NMNDisc *ndisc, GError **error);
gboolean (*send_ra) (NMNDisc *ndisc, GError **error);
} NMNDiscClass;
GType nm_ndisc_get_type (void);
void nm_ndisc_emit_config_change (NMNDisc *self, NMNDiscConfigMap changed);
int nm_ndisc_get_ifindex (NMNDisc *self);
const char *nm_ndisc_get_ifname (NMNDisc *self);
NMNDiscNodeType nm_ndisc_get_node_type (NMNDisc *self);
gboolean nm_ndisc_set_iid (NMNDisc *ndisc, const NMUtilsIPv6IfaceId iid);
void nm_ndisc_start (NMNDisc *ndisc);
NMNDiscConfigMap nm_ndisc_dad_failed (NMNDisc *ndisc,
const struct in6_addr *address,
gboolean emit_changed_signal);
void nm_ndisc_set_config (NMNDisc *ndisc,
const GArray *addresses,
const GArray *dns_servers,
const GArray *dns_domains);
NMPlatform *nm_ndisc_get_platform (NMNDisc *self);
NMPNetns *nm_ndisc_netns_get (NMNDisc *self);
gboolean nm_ndisc_netns_push (NMNDisc *self, NMPNetns **netns);
static inline gboolean
nm_ndisc_dad_addr_is_fail_candidate_event (NMPlatformSignalChangeType change_type,
const NMPlatformIP6Address *addr)
{
return !NM_FLAGS_HAS (addr->n_ifa_flags, IFA_F_TEMPORARY)
&& ( (change_type == NM_PLATFORM_SIGNAL_CHANGED && addr->n_ifa_flags & IFA_F_DADFAILED)
|| (change_type == NM_PLATFORM_SIGNAL_REMOVED && addr->n_ifa_flags & IFA_F_TENTATIVE));
}
static inline gboolean
nm_ndisc_dad_addr_is_fail_candidate (NMPlatform *platform,
const NMPObject *obj)
{
const NMPlatformIP6Address *addr;
addr = NMP_OBJECT_CAST_IP6_ADDRESS (nm_platform_lookup_obj (platform,
NMP_CACHE_ID_TYPE_OBJECT_TYPE,
obj));
if ( addr
&& ( NM_FLAGS_HAS (addr->n_ifa_flags, IFA_F_TEMPORARY)
|| !NM_FLAGS_HAS (addr->n_ifa_flags, IFA_F_DADFAILED))) {
/* the address still/again exists and is not in DADFAILED state. Skip it. */
return FALSE;
}
return TRUE;
}
#endif /* __NETWORKMANAGER_NDISC_H__ */
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