src/network/networkd-link.h

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2 #pragma once
   3
   4 #include <endian.h>
   5 #include <linux/nl80211.h>
   6
   7 #include "sd-bus.h"
   8 #include "sd-device.h"
   9 #include "sd-dhcp-client.h"
  10 #include "sd-dhcp-server.h"
  11 #include "sd-dhcp6-client.h"
  12 #include "sd-ipv4acd.h"
  13 #include "sd-ipv4ll.h"
  14 #include "sd-lldp-rx.h"
  15 #include "sd-lldp-tx.h"
  16 #include "sd-ndisc.h"
  17 #include "sd-radv.h"
  18 #include "sd-netlink.h"
  19
  20 #include "ether-addr-util.h"
  21 #include "log-link.h"
  22 #include "netif-util.h"
  23 #include "network-util.h"
  24 #include "networkd-bridge-vlan.h"
  25 #include "networkd-ipv6ll.h"
  26 #include "networkd-util.h"
  27 #include "ordered-set.h"
  28 #include "resolve-util.h"
  29 #include "set.h"
  30
  31 typedef enum LinkState {
  32         LINK_STATE_PENDING,     /* udev has not initialized the link */
  33         LINK_STATE_INITIALIZED, /* udev has initialized the link */
  34         LINK_STATE_CONFIGURING, /* configuring addresses, routes, etc. */
  35         LINK_STATE_CONFIGURED,  /* everything is configured */
  36         LINK_STATE_UNMANAGED,   /* Unmanaged=yes is set */
  37         LINK_STATE_FAILED,      /* at least one configuration process failed */
  38         LINK_STATE_LINGER,      /* RTM_DELLINK for the link has been received */
  39         _LINK_STATE_MAX,
  40         _LINK_STATE_INVALID = -EINVAL,
  41 } LinkState;
  42
  43 typedef struct Manager Manager;
  44 typedef struct Network Network;
  45 typedef struct NetDev NetDev;
  46 typedef struct DUID DUID;
  47
  48 typedef struct Link {
  49         Manager *manager;
  50
  51         unsigned n_ref;
  52
  53         int ifindex;
  54         int master_ifindex;
  55         int dsa_master_ifindex;
  56         int sr_iov_phys_port_ifindex;
  57         Set *sr_iov_virt_port_ifindices;
  58
  59         char *ifname;
  60         char **alternative_names;
  61         char *kind;
  62         unsigned short iftype;
  63         char *state_file;
  64         struct hw_addr_data hw_addr;
  65         struct hw_addr_data bcast_addr;
  66         struct hw_addr_data permanent_hw_addr;
  67         struct hw_addr_data requested_hw_addr;
  68         struct in6_addr ipv6ll_address;
  69         uint32_t mtu;
  70         uint32_t min_mtu;
  71         uint32_t max_mtu;
  72         uint32_t original_mtu;
  73         sd_device *dev;
  74         char *driver;
  75
  76         /* bridge vlan */
  77         uint16_t bridge_vlan_pvid;
  78         bool bridge_vlan_pvid_is_untagged;
  79         uint32_t bridge_vlan_bitmap[BRIDGE_VLAN_BITMAP_LEN];
  80
  81         /* to prevent multiple ethtool calls */
  82         bool ethtool_driver_read;
  83         bool ethtool_permanent_hw_addr_read;
  84
  85         /* link-local addressing */
  86         IPv6LinkLocalAddressGenMode ipv6ll_address_gen_mode;
  87
  88         /* wlan */
  89         enum nl80211_iftype wlan_iftype;
  90         char *ssid;
  91         char *previous_ssid;
  92         struct ether_addr bssid;
  93
  94         unsigned flags;
  95         uint8_t kernel_operstate;
  96
  97         sd_event_source *carrier_lost_timer;
  98
  99         Network *network;
 100         NetDev *netdev;
 101
 102         LinkState state;
 103         LinkOperationalState operstate;
 104         LinkCarrierState carrier_state;
 105         LinkAddressState address_state;
 106         LinkAddressState ipv4_address_state;
 107         LinkAddressState ipv6_address_state;
 108         LinkOnlineState online_state;
 109
 110         unsigned static_address_messages;
 111         unsigned static_address_label_messages;
 112         unsigned static_bridge_fdb_messages;
 113         unsigned static_bridge_mdb_messages;
 114         unsigned static_ipv6_proxy_ndp_messages;
 115         unsigned static_neighbor_messages;
 116         unsigned static_nexthop_messages;
 117         unsigned static_route_messages;
 118         unsigned static_routing_policy_rule_messages;
 119         unsigned tc_messages;
 120         unsigned sr_iov_messages;
 121         unsigned set_link_messages;
 122         unsigned set_flags_messages;
 123         unsigned create_stacked_netdev_messages;
 124
 125         Set *addresses;
 126         Set *neighbors;
 127         Set *routes;
 128         Set *nexthops;
 129         Set *qdiscs;
 130         Set *tclasses;
 131
 132         sd_dhcp_client *dhcp_client;
 133         sd_dhcp_lease *dhcp_lease;
 134         char *lease_file;
 135         unsigned dhcp4_messages;
 136         bool dhcp4_configured;
 137         char *dhcp4_6rd_tunnel_name;
 138
 139         Hashmap *ipv4acd_by_address;
 140
 141         sd_ipv4ll *ipv4ll;
 142         bool ipv4ll_address_configured:1;
 143
 144         bool static_addresses_configured:1;
 145         bool static_address_labels_configured:1;
 146         bool static_bridge_fdb_configured:1;
 147         bool static_bridge_mdb_configured:1;
 148         bool static_ipv6_proxy_ndp_configured:1;
 149         bool static_neighbors_configured:1;
 150         bool static_nexthops_configured:1;
 151         bool static_routes_configured:1;
 152         bool static_routing_policy_rules_configured:1;
 153         bool tc_configured:1;
 154         bool sr_iov_configured:1;
 155         bool activated:1;
 156         bool master_set:1;
 157         bool stacked_netdevs_created:1;
 158         bool bridge_vlan_set:1;
 159
 160         sd_dhcp_server *dhcp_server;
 161
 162         sd_ndisc *ndisc;
 163         sd_event_source *ndisc_expire;
 164         Set *ndisc_rdnss;
 165         Set *ndisc_dnssl;
 166         Set *ndisc_captive_portals;
 167         Set *ndisc_pref64;
 168         unsigned ndisc_messages;
 169         bool ndisc_configured:1;
 170
 171         sd_radv *radv;
 172
 173         sd_dhcp6_client *dhcp6_client;
 174         sd_dhcp6_lease *dhcp6_lease;
 175         unsigned dhcp6_messages;
 176         bool dhcp6_configured;
 177
 178         Set *dhcp_pd_prefixes;
 179         unsigned dhcp_pd_messages;
 180         bool dhcp_pd_configured;
 181
 182         /* This is about LLDP reception */
 183         sd_lldp_rx *lldp_rx;
 184         char *lldp_file;
 185
 186         /* This is about LLDP transmission */
 187         sd_lldp_tx *lldp_tx;
 188
 189         Hashmap *bound_by_links;
 190         Hashmap *bound_to_links;
 191         Set *slaves;
 192
 193         /* For speed meter */
 194         struct rtnl_link_stats64 stats_old, stats_new;
 195         bool stats_updated;
 196
 197         /* All kinds of DNS configuration the user configured via D-Bus */
 198         struct in_addr_full **dns;
 199         unsigned n_dns;
 200         OrderedSet *search_domains, *route_domains;
 201
 202         int dns_default_route;
 203         ResolveSupport llmnr;
 204         ResolveSupport mdns;
 205         DnssecMode dnssec_mode;
 206         DnsOverTlsMode dns_over_tls_mode;
 207         Set *dnssec_negative_trust_anchors;
 208
 209         /* Similar, but NTP server configuration */
 210         char **ntp;
 211 } Link;
 212
 213 typedef int (*link_netlink_message_handler_t)(sd_netlink*, sd_netlink_message*, Link*);
 214
 215 bool link_is_ready_to_configure(Link *link, bool allow_unmanaged);
 216
 217 void link_ntp_settings_clear(Link *link);
 218 void link_dns_settings_clear(Link *link);
 219 Link *link_unref(Link *link);
 220 Link *link_ref(Link *link);
 221 DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_unref);
 222 DEFINE_TRIVIAL_DESTRUCTOR(link_netlink_destroy_callback, Link, link_unref);
 223
 224 int link_get_by_index(Manager *m, int ifindex, Link **ret);
 225 int link_get_by_name(Manager *m, const char *ifname, Link **ret);
 226 int link_get_by_hw_addr(Manager *m, const struct hw_addr_data *hw_addr, Link **ret);
 227 int link_get_master(Link *link, Link **ret);
 228
 229 int link_getlink_handler_internal(sd_netlink *rtnl, sd_netlink_message *m, Link *link, const char *error_msg);
 230 int link_call_getlink(Link *link, link_netlink_message_handler_t callback);
 231 int link_handle_bound_to_list(Link *link);
 232
 233 void link_enter_failed(Link *link);
 234 void link_set_state(Link *link, LinkState state);
 235 void link_check_ready(Link *link);
 236
 237 void link_update_operstate(Link *link, bool also_update_bond_master);
 238
 239 static inline bool link_has_carrier(Link *link) {
 240         assert(link);
 241         return netif_has_carrier(link->kernel_operstate, link->flags);
 242 }
 243
 244 bool link_ipv6_enabled(Link *link);
 245 int link_ipv6ll_gained(Link *link);
 246 bool link_has_ipv6_connectivity(Link *link);
 247
 248 int link_stop_engines(Link *link, bool may_keep_dhcp);
 249
 250 const char* link_state_to_string(LinkState s) _const_;
 251 LinkState link_state_from_string(const char *s) _pure_;
 252
 253 int link_reconfigure_impl(Link *link, bool force);
 254 int link_reconfigure(Link *link, bool force);
 255
 256 int manager_udev_process_link(Manager *m, sd_device *device, sd_device_action_t action);
 257 int manager_rtnl_process_link(sd_netlink *rtnl, sd_netlink_message *message, Manager *m);
 258
 259 int link_flags_to_string_alloc(uint32_t flags, char **ret);
 260 const char *kernel_operstate_to_string(int t) _const_;