src/network/networkd-link.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 #include <endian.h>
   5
   6 #include "sd-bus.h"
   7 #include "sd-device.h"
   8 #include "sd-dhcp-client.h"
   9 #include "sd-dhcp-server.h"
  10 #include "sd-dhcp6-client.h"
  11 #include "sd-ipv4ll.h"
  12 #include "sd-lldp.h"
  13 #include "sd-ndisc.h"
  14 #include "sd-radv.h"
  15 #include "sd-netlink.h"
  16
  17 #include "list.h"
  18 #include "log-link.h"
  19 #include "network-util.h"
  20 #include "networkd-util.h"
  21 #include "ordered-set.h"
  22 #include "resolve-util.h"
  23 #include "set.h"
  24
  25 typedef enum LinkState {
  26         LINK_STATE_PENDING,     /* udev has not initialized the link */
  27         LINK_STATE_INITIALIZED, /* udev has initialized the link */
  28         LINK_STATE_CONFIGURING, /* configuring addresses, routes, etc. */
  29         LINK_STATE_CONFIGURED,  /* everything is configured */
  30         LINK_STATE_UNMANAGED,   /* Unmanaged=yes is set */
  31         LINK_STATE_FAILED,      /* at least one configuration process failed */
  32         LINK_STATE_LINGER,      /* RTM_DELLINK for the link has been received */
  33         _LINK_STATE_MAX,
  34         _LINK_STATE_INVALID = -1
  35 } LinkState;
  36
  37 typedef struct Manager Manager;
  38 typedef struct Network Network;
  39 typedef struct Address Address;
  40 typedef struct DUID DUID;
  41
  42 typedef struct Link {
  43         Manager *manager;
  44
  45         unsigned n_ref;
  46
  47         int ifindex;
  48         int master_ifindex;
  49         char *ifname;
  50         char *kind;
  51         unsigned short iftype;
  52         char *state_file;
  53         struct ether_addr mac;
  54         struct in6_addr ipv6ll_address;
  55         uint32_t mtu;
  56         sd_device *sd_device;
  57
  58         /* wlan */
  59         char *ssid;
  60         struct ether_addr bssid;
  61
  62         unsigned flags;
  63         uint8_t kernel_operstate;
  64
  65         Network *network;
  66
  67         LinkState state;
  68         LinkOperationalState operstate;
  69         LinkCarrierState carrier_state;
  70         LinkAddressState address_state;
  71
  72         unsigned address_messages;
  73         unsigned address_label_messages;
  74         unsigned neighbor_messages;
  75         unsigned route_messages;
  76         unsigned nexthop_messages;
  77         unsigned routing_policy_rule_messages;
  78         unsigned routing_policy_rule_remove_messages;
  79         unsigned enslaving;
  80
  81         Set *addresses;
  82         Set *addresses_foreign;
  83         Set *neighbors;
  84         Set *neighbors_foreign;
  85         Set *routes;
  86         Set *routes_foreign;
  87         Set *nexthops;
  88         Set *nexthops_foreign;
  89
  90         sd_dhcp_client *dhcp_client;
  91         sd_dhcp_lease *dhcp_lease, *dhcp_lease_old;
  92         Set *dhcp_routes;
  93         char *lease_file;
  94         uint32_t original_mtu;
  95         unsigned dhcp4_messages;
  96         bool dhcp4_route_failed:1;
  97         bool dhcp4_route_retrying:1;
  98         bool dhcp4_configured:1;
  99         bool dhcp6_configured:1;
 100
 101         unsigned ndisc_messages;
 102         bool ndisc_configured;
 103
 104         sd_ipv4ll *ipv4ll;
 105         bool ipv4ll_address:1;
 106
 107         bool addresses_configured:1;
 108         bool addresses_ready:1;
 109         bool neighbors_configured:1;
 110         bool static_routes_configured:1;
 111         bool static_routes_ready:1;
 112         bool static_nexthops_configured:1;
 113         bool routing_policy_rules_configured:1;
 114         bool setting_mtu:1;
 115
 116         LIST_HEAD(Address, pool_addresses);
 117
 118         sd_dhcp_server *dhcp_server;
 119
 120         sd_ndisc *ndisc;
 121         Set *ndisc_rdnss;
 122         Set *ndisc_dnssl;
 123
 124         sd_radv *radv;
 125
 126         sd_dhcp6_client *dhcp6_client;
 127
 128         /* This is about LLDP reception */
 129         sd_lldp *lldp;
 130         char *lldp_file;
 131
 132         /* This is about LLDP transmission */
 133         unsigned lldp_tx_fast; /* The LLDP txFast counter (See 802.1ab-2009, section 9.2.5.18) */
 134         sd_event_source *lldp_emit_event_source;
 135
 136         Hashmap *bound_by_links;
 137         Hashmap *bound_to_links;
 138         Set *slaves;
 139
 140         /* For speed meter */
 141         struct rtnl_link_stats64 stats_old, stats_new;
 142         bool stats_updated;
 143
 144
 145         /* All kinds of DNS configuration */
 146         struct in_addr_data *dns;
 147         unsigned n_dns;
 148         OrderedSet *search_domains, *route_domains;
 149
 150         int dns_default_route;
 151         ResolveSupport llmnr;
 152         ResolveSupport mdns;
 153         DnssecMode dnssec_mode;
 154         DnsOverTlsMode dns_over_tls_mode;
 155         Set *dnssec_negative_trust_anchors;
 156
 157         char **ntp;
 158 } Link;
 159
 160 typedef int (*link_netlink_message_handler_t)(sd_netlink*, sd_netlink_message*, Link*);
 161
 162 DUID *link_get_duid(Link *link);
 163 int get_product_uuid_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error);
 164
 165 void link_ntp_settings_clear(Link *link);
 166 void link_dns_settings_clear(Link *link);
 167 Link *link_unref(Link *link);
 168 Link *link_ref(Link *link);
 169 DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_unref);
 170 DEFINE_TRIVIAL_DESTRUCTOR(link_netlink_destroy_callback, Link, link_unref);
 171
 172 int link_get(Manager *m, int ifindex, Link **ret);
 173 int link_add(Manager *manager, sd_netlink_message *message, Link **ret);
 174 void link_drop(Link *link);
 175
 176 int link_down(Link *link, link_netlink_message_handler_t callback);
 177
 178 void link_enter_failed(Link *link);
 179 int link_initialized(Link *link, sd_device *device);
 180
 181 void link_set_state(Link *link, LinkState state);
 182 void link_check_ready(Link *link);
 183
 184 void link_update_operstate(Link *link, bool also_update_bond_master);
 185 int link_update(Link *link, sd_netlink_message *message);
 186
 187 void link_dirty(Link *link);
 188 void link_clean(Link *link);
 189 int link_save(Link *link);
 190
 191 int link_carrier_reset(Link *link);
 192 bool link_has_carrier(Link *link);
 193
 194 int link_ipv6ll_gained(Link *link, const struct in6_addr *address);
 195
 196 int link_set_mtu(Link *link, uint32_t mtu);
 197
 198 bool link_ipv4ll_enabled(Link *link, AddressFamily mask);
 199
 200 int link_stop_clients(Link *link, bool may_keep_dhcp);
 201
 202 const char* link_state_to_string(LinkState s) _const_;
 203 LinkState link_state_from_string(const char *s) _pure_;
 204
 205 uint32_t link_get_vrf_table(Link *link);
 206 uint32_t link_get_dhcp_route_table(Link *link);
 207 uint32_t link_get_ipv6_accept_ra_route_table(Link *link);
 208 int link_request_set_routes(Link *link);
 209 int link_request_set_nexthop(Link *link);
 210
 211 int link_reconfigure(Link *link);
 212
 213 #define ADDRESS_FMT_VAL(address)                   \
 214         be32toh((address).s_addr) >> 24,           \
 215         (be32toh((address).s_addr) >> 16) & 0xFFu, \
 216         (be32toh((address).s_addr) >> 8) & 0xFFu,  \
 217         be32toh((address).s_addr) & 0xFFu