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 "set.h"
  21
  22 typedef enum LinkState {
  23         LINK_STATE_PENDING,     /* udev has not initialized the link */
  24         LINK_STATE_INITIALIZED, /* udev has initialized the link */
  25         LINK_STATE_CONFIGURING, /* configuring addresses, routes, etc. */
  26         LINK_STATE_CONFIGURED,  /* everything is configured */
  27         LINK_STATE_UNMANAGED,   /* Unmanaged=yes is set */
  28         LINK_STATE_FAILED,      /* at least one configuration process failed */
  29         LINK_STATE_LINGER,      /* RTM_DELLINK for the link has been received */
  30         _LINK_STATE_MAX,
  31         _LINK_STATE_INVALID = -1
  32 } LinkState;
  33
  34 typedef struct Manager Manager;
  35 typedef struct Network Network;
  36 typedef struct Address Address;
  37 typedef struct DUID DUID;
  38
  39 typedef struct Link {
  40         Manager *manager;
  41
  42         unsigned n_ref;
  43
  44         int ifindex;
  45         int master_ifindex;
  46         char *ifname;
  47         char *kind;
  48         unsigned short iftype;
  49         char *state_file;
  50         struct ether_addr mac;
  51         struct in6_addr ipv6ll_address;
  52         uint32_t mtu;
  53         sd_device *sd_device;
  54
  55         unsigned flags;
  56         uint8_t kernel_operstate;
  57
  58         Network *network;
  59
  60         LinkState state;
  61         LinkOperationalState operstate;
  62
  63         unsigned address_messages;
  64         unsigned address_label_messages;
  65         unsigned neighbor_messages;
  66         unsigned route_messages;
  67         unsigned routing_policy_rule_messages;
  68         unsigned routing_policy_rule_remove_messages;
  69         unsigned enslaving;
  70         /* link_is_enslaved() has additional checks. So, it is named _raw. */
  71         bool enslaved_raw;
  72
  73         Set *addresses;
  74         Set *addresses_foreign;
  75         Set *routes;
  76         Set *routes_foreign;
  77
  78         bool addresses_configured;
  79         bool addresses_ready;
  80
  81         sd_dhcp_client *dhcp_client;
  82         sd_dhcp_lease *dhcp_lease;
  83         char *lease_file;
  84         uint32_t original_mtu;
  85         unsigned dhcp4_messages;
  86         bool dhcp4_configured;
  87         bool dhcp6_configured;
  88
  89         unsigned ndisc_messages;
  90         bool ndisc_configured;
  91
  92         sd_ipv4ll *ipv4ll;
  93         bool ipv4ll_address:1;
  94         bool ipv4ll_route:1;
  95
  96         bool neighbors_configured;
  97
  98         bool static_routes_configured;
  99         bool routing_policy_rules_configured;
 100         bool setting_mtu;
 101
 102         LIST_HEAD(Address, pool_addresses);
 103
 104         sd_dhcp_server *dhcp_server;
 105
 106         sd_ndisc *ndisc;
 107         Set *ndisc_rdnss;
 108         Set *ndisc_dnssl;
 109
 110         sd_radv *radv;
 111
 112         sd_dhcp6_client *dhcp6_client;
 113         bool rtnl_extended_attrs;
 114
 115         /* This is about LLDP reception */
 116         sd_lldp *lldp;
 117         char *lldp_file;
 118
 119         /* This is about LLDP transmission */
 120         unsigned lldp_tx_fast; /* The LLDP txFast counter (See 802.1ab-2009, section 9.2.5.18) */
 121         sd_event_source *lldp_emit_event_source;
 122
 123         Hashmap *bound_by_links;
 124         Hashmap *bound_to_links;
 125         Set *slaves;
 126 } Link;
 127
 128 typedef int (*link_netlink_message_handler_t)(sd_netlink*, sd_netlink_message*, Link*);
 129
 130 DUID *link_get_duid(Link *link);
 131 int get_product_uuid_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error);
 132
 133 Link *link_unref(Link *link);
 134 Link *link_ref(Link *link);
 135 DEFINE_TRIVIAL_DESTRUCTOR(link_netlink_destroy_callback, Link, link_unref);
 136
 137 int link_get(Manager *m, int ifindex, Link **ret);
 138 int link_add(Manager *manager, sd_netlink_message *message, Link **ret);
 139 void link_drop(Link *link);
 140
 141 int link_down(Link *link);
 142
 143 void link_enter_failed(Link *link);
 144 int link_initialized(Link *link, sd_device *device);
 145
 146 void link_check_ready(Link *link);
 147
 148 void link_update_operstate(Link *link, bool also_update_bond_master);
 149 int link_update(Link *link, sd_netlink_message *message);
 150
 151 void link_dirty(Link *link);
 152 void link_clean(Link *link);
 153 int link_save(Link *link);
 154
 155 int link_carrier_reset(Link *link);
 156 bool link_has_carrier(Link *link);
 157
 158 int link_ipv6ll_gained(Link *link, const struct in6_addr *address);
 159
 160 int link_set_mtu(Link *link, uint32_t mtu, bool force);
 161
 162 int ipv4ll_configure(Link *link);
 163 bool link_ipv4ll_enabled(Link *link);
 164 bool link_ipv4ll_fallback_enabled(Link *link);
 165
 166 int dhcp4_configure(Link *link);
 167 int dhcp4_set_client_identifier(Link *link);
 168 int dhcp4_set_promote_secondaries(Link *link);
 169 int dhcp6_request_prefix_delegation(Link *link);
 170 int dhcp6_configure(Link *link);
 171 int dhcp6_request_address(Link *link, int ir);
 172 int dhcp6_lease_pd_prefix_lost(sd_dhcp6_client *client, Link* link);
 173
 174 int link_stop_clients(Link *link);
 175
 176 const char* link_state_to_string(LinkState s) _const_;
 177 LinkState link_state_from_string(const char *s) _pure_;
 178
 179 extern const sd_bus_vtable link_vtable[];
 180
 181 int link_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error);
 182 int link_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error);
 183 int link_send_changed(Link *link, const char *property, ...) _sentinel_;
 184
 185 uint32_t link_get_vrf_table(Link *link);
 186 uint32_t link_get_dhcp_route_table(Link *link);
 187 uint32_t link_get_ipv6_accept_ra_route_table(Link *link);
 188 int link_request_set_routes(Link *link);
 189
 190 #define ADDRESS_FMT_VAL(address)                   \
 191         be32toh((address).s_addr) >> 24,           \
 192         (be32toh((address).s_addr) >> 16) & 0xFFu, \
 193         (be32toh((address).s_addr) >> 8) & 0xFFu,  \
 194         be32toh((address).s_addr) & 0xFFu