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