6906794dd1
If DHCP4 client lost a lease, and then soon acquire new lease, then the removal of the old address may not be completed. If that happens, and the new and old addresses are the same, then the new address will be considered as a foreign address. Such a situation can occur when the DHCP4 server is restarted. This makes networkd wait for the removal of the old address when a new lease is acquired. This also makes the link in configuring state when renewing address.
244 lines
7.6 KiB
C
244 lines
7.6 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#pragma once
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#include <endian.h>
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#include <linux/nl80211.h>
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#include "sd-bus.h"
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#include "sd-device.h"
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#include "sd-dhcp-client.h"
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#include "sd-dhcp-server.h"
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#include "sd-dhcp6-client.h"
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#include "sd-ipv4ll.h"
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#include "sd-lldp.h"
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#include "sd-ndisc.h"
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#include "sd-radv.h"
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#include "sd-netlink.h"
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#include "list.h"
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#include "log-link.h"
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#include "network-util.h"
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#include "networkd-util.h"
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#include "ordered-set.h"
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#include "resolve-util.h"
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#include "set.h"
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typedef enum LinkState {
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LINK_STATE_PENDING, /* udev has not initialized the link */
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LINK_STATE_INITIALIZED, /* udev has initialized the link */
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LINK_STATE_CONFIGURING, /* configuring addresses, routes, etc. */
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LINK_STATE_CONFIGURED, /* everything is configured */
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LINK_STATE_UNMANAGED, /* Unmanaged=yes is set */
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LINK_STATE_FAILED, /* at least one configuration process failed */
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LINK_STATE_LINGER, /* RTM_DELLINK for the link has been received */
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_LINK_STATE_MAX,
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_LINK_STATE_INVALID = -1
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} LinkState;
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typedef struct Manager Manager;
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typedef struct Network Network;
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typedef struct Address Address;
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typedef struct DUID DUID;
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typedef struct Link {
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Manager *manager;
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unsigned n_ref;
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int ifindex;
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int master_ifindex;
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char *ifname;
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char **alternative_names;
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char *kind;
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unsigned short iftype;
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char *state_file;
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struct ether_addr mac;
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struct ether_addr permanent_mac;
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struct in6_addr ipv6ll_address;
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uint32_t mtu;
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sd_device *sd_device;
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char *driver;
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/* wlan */
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enum nl80211_iftype wlan_iftype;
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char *ssid;
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struct ether_addr bssid;
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unsigned flags;
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uint8_t kernel_operstate;
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Network *network;
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LinkState state;
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LinkOperationalState operstate;
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LinkCarrierState carrier_state;
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LinkAddressState address_state;
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unsigned address_messages;
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unsigned address_label_messages;
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unsigned neighbor_messages;
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unsigned route_messages;
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unsigned nexthop_messages;
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unsigned routing_policy_rule_messages;
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unsigned routing_policy_rule_remove_messages;
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unsigned tc_messages;
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unsigned sr_iov_messages;
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unsigned enslaving;
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Set *addresses;
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Set *addresses_foreign;
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Set *neighbors;
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Set *neighbors_foreign;
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Set *routes;
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Set *routes_foreign;
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Set *nexthops;
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Set *nexthops_foreign;
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sd_dhcp_client *dhcp_client;
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sd_dhcp_lease *dhcp_lease, *dhcp_lease_old;
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Set *dhcp_routes;
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char *lease_file;
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uint32_t original_mtu;
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unsigned dhcp4_messages;
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unsigned dhcp4_remove_messages;
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unsigned dhcp6_address_messages;
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unsigned dhcp6_route_messages;
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unsigned dhcp6_pd_address_messages;
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unsigned dhcp6_pd_route_messages;
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bool dhcp4_route_failed:1;
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bool dhcp4_route_retrying:1;
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bool dhcp4_configured:1;
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bool dhcp6_address_configured:1;
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bool dhcp6_route_configured:1;
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bool dhcp6_pd_address_configured:1;
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bool dhcp6_pd_route_configured:1;
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unsigned ndisc_addresses_messages;
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unsigned ndisc_routes_messages;
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bool ndisc_addresses_configured:1;
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bool ndisc_routes_configured:1;
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sd_ipv4ll *ipv4ll;
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bool ipv4ll_address:1;
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bool addresses_configured:1;
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bool addresses_ready:1;
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bool neighbors_configured:1;
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bool static_routes_configured:1;
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bool static_nexthops_configured:1;
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bool routing_policy_rules_configured:1;
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bool tc_configured:1;
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bool sr_iov_configured:1;
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bool setting_mtu:1;
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bool setting_genmode:1;
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bool ipv6_mtu_set:1;
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LIST_HEAD(Address, pool_addresses);
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sd_dhcp_server *dhcp_server;
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sd_ndisc *ndisc;
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Set *ndisc_rdnss;
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Set *ndisc_dnssl;
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sd_radv *radv;
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sd_dhcp6_client *dhcp6_client;
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/* This is about LLDP reception */
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sd_lldp *lldp;
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char *lldp_file;
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/* This is about LLDP transmission */
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unsigned lldp_tx_fast; /* The LLDP txFast counter (See 802.1ab-2009, section 9.2.5.18) */
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sd_event_source *lldp_emit_event_source;
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Hashmap *bound_by_links;
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Hashmap *bound_to_links;
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Set *slaves;
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/* For speed meter */
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struct rtnl_link_stats64 stats_old, stats_new;
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bool stats_updated;
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/* All kinds of DNS configuration the user configured via D-Bus */
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struct in_addr_data *dns;
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unsigned n_dns;
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OrderedSet *search_domains, *route_domains;
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int dns_default_route;
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ResolveSupport llmnr;
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ResolveSupport mdns;
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DnssecMode dnssec_mode;
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DnsOverTlsMode dns_over_tls_mode;
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Set *dnssec_negative_trust_anchors;
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/* Similar, but NTP server configuration */
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char **ntp;
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} Link;
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typedef int (*link_netlink_message_handler_t)(sd_netlink*, sd_netlink_message*, Link*);
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DUID *link_get_duid(Link *link);
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int get_product_uuid_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error);
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void link_ntp_settings_clear(Link *link);
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void link_dns_settings_clear(Link *link);
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Link *link_unref(Link *link);
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Link *link_ref(Link *link);
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DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_unref);
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DEFINE_TRIVIAL_DESTRUCTOR(link_netlink_destroy_callback, Link, link_unref);
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int link_get(Manager *m, int ifindex, Link **ret);
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int link_add(Manager *manager, sd_netlink_message *message, Link **ret);
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void link_drop(Link *link);
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int link_down(Link *link, link_netlink_message_handler_t callback);
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void link_enter_failed(Link *link);
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int link_initialized(Link *link, sd_device *device);
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void link_set_state(Link *link, LinkState state);
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void link_check_ready(Link *link);
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void link_update_operstate(Link *link, bool also_update_bond_master);
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int link_update(Link *link, sd_netlink_message *message);
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void link_dirty(Link *link);
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void link_clean(Link *link);
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int link_save(Link *link);
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int link_carrier_reset(Link *link);
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bool link_has_carrier(Link *link);
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int link_ipv6ll_gained(Link *link, const struct in6_addr *address);
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int link_set_mtu(Link *link, uint32_t mtu);
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bool link_ipv4ll_enabled(Link *link, AddressFamily mask);
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int link_stop_clients(Link *link, bool may_keep_dhcp);
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const char* link_state_to_string(LinkState s) _const_;
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LinkState link_state_from_string(const char *s) _pure_;
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uint32_t link_get_vrf_table(Link *link);
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uint32_t link_get_dhcp_route_table(Link *link);
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uint32_t link_get_ipv6_accept_ra_route_table(Link *link);
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int link_request_set_routes(Link *link);
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int link_reconfigure(Link *link, bool force);
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int log_link_message_full_errno(Link *link, sd_netlink_message *m, int level, int err, const char *msg);
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#define log_link_message_error_errno(link, m, err, msg) log_link_message_full_errno(link, m, LOG_ERR, err, msg)
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#define log_link_message_warning_errno(link, m, err, msg) log_link_message_full_errno(link, m, LOG_WARNING, err, msg)
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#define log_link_message_notice_errno(link, m, err, msg) log_link_message_full_errno(link, m, LOG_NOTICE, err, msg)
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#define log_link_message_info_errno(link, m, err, msg) log_link_message_full_errno(link, m, LOG_INFO, err, msg)
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#define log_link_message_debug_errno(link, m, err, msg) log_link_message_full_errno(link, m, LOG_DEBUG, err, msg)
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#define ADDRESS_FMT_VAL(address) \
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be32toh((address).s_addr) >> 24, \
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(be32toh((address).s_addr) >> 16) & 0xFFu, \
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(be32toh((address).s_addr) >> 8) & 0xFFu, \
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be32toh((address).s_addr) & 0xFFu
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