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 "set.h"
  19
  20 typedef enum LinkState {
  21         LINK_STATE_PENDING,
  22         LINK_STATE_CONFIGURING,
  23         LINK_STATE_CONFIGURED,
  24         LINK_STATE_UNMANAGED,
  25         LINK_STATE_FAILED,
  26         LINK_STATE_LINGER,
  27         _LINK_STATE_MAX,
  28         _LINK_STATE_INVALID = -1
  29 } LinkState;
  30
  31 typedef enum LinkOperationalState {
  32         LINK_OPERSTATE_OFF,
  33         LINK_OPERSTATE_NO_CARRIER,
  34         LINK_OPERSTATE_DORMANT,
  35         LINK_OPERSTATE_CARRIER,
  36         LINK_OPERSTATE_DEGRADED,
  37         LINK_OPERSTATE_ROUTABLE,
  38         _LINK_OPERSTATE_MAX,
  39         _LINK_OPERSTATE_INVALID = -1
  40 } LinkOperationalState;
  41
  42 typedef struct Manager Manager;
  43 typedef struct Network Network;
  44 typedef struct Address Address;
  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         char *ifname;
  55         char *kind;
  56         unsigned short iftype;
  57         char *state_file;
  58         struct ether_addr mac;
  59         struct in6_addr ipv6ll_address;
  60         uint32_t mtu;
  61         sd_device *sd_device;
  62
  63         unsigned flags;
  64         uint8_t kernel_operstate;
  65
  66         Network *network;
  67
  68         LinkState state;
  69         LinkOperationalState operstate;
  70
  71         unsigned address_messages;
  72         unsigned address_label_messages;
  73         unsigned neighbor_messages;
  74         unsigned route_messages;
  75         unsigned routing_policy_rule_messages;
  76         unsigned routing_policy_rule_remove_messages;
  77         unsigned enslaving;
  78
  79         Set *addresses;
  80         Set *addresses_foreign;
  81         Set *routes;
  82         Set *routes_foreign;
  83
  84         bool addresses_configured;
  85         bool addresses_ready;
  86
  87         sd_dhcp_client *dhcp_client;
  88         sd_dhcp_lease *dhcp_lease;
  89         char *lease_file;
  90         uint32_t original_mtu;
  91         unsigned dhcp4_messages;
  92         bool dhcp4_configured;
  93         bool dhcp6_configured;
  94
  95         unsigned ndisc_messages;
  96         bool ndisc_configured;
  97
  98         sd_ipv4ll *ipv4ll;
  99         bool ipv4ll_address:1;
 100         bool ipv4ll_route:1;
 101
 102         bool neighbors_configured;
 103
 104         bool static_routes_configured;
 105         bool routing_policy_rules_configured;
 106         bool setting_mtu;
 107
 108         LIST_HEAD(Address, pool_addresses);
 109
 110         sd_dhcp_server *dhcp_server;
 111
 112         sd_ndisc *ndisc;
 113         Set *ndisc_rdnss;
 114         Set *ndisc_dnssl;
 115
 116         sd_radv *radv;
 117
 118         sd_dhcp6_client *dhcp6_client;
 119         bool rtnl_extended_attrs;
 120
 121         /* This is about LLDP reception */
 122         sd_lldp *lldp;
 123         char *lldp_file;
 124
 125         /* This is about LLDP transmission */
 126         unsigned lldp_tx_fast; /* The LLDP txFast counter (See 802.1ab-2009, section 9.2.5.18) */
 127         sd_event_source *lldp_emit_event_source;
 128
 129         Hashmap *bound_by_links;
 130         Hashmap *bound_to_links;
 131 } Link;
 132
 133 typedef int (*link_netlink_message_handler_t)(sd_netlink*, sd_netlink_message*, Link*);
 134
 135 DUID *link_get_duid(Link *link);
 136 int get_product_uuid_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error);
 137
 138 Link *link_unref(Link *link);
 139 Link *link_ref(Link *link);
 140 DEFINE_TRIVIAL_DESTRUCTOR(link_netlink_destroy_callback, Link, link_unref);
 141
 142 int link_get(Manager *m, int ifindex, Link **ret);
 143 int link_add(Manager *manager, sd_netlink_message *message, Link **ret);
 144 void link_drop(Link *link);
 145
 146 int link_down(Link *link);
 147
 148 void link_enter_failed(Link *link);
 149 int link_initialized(Link *link, sd_device *device);
 150
 151 void link_check_ready(Link *link);
 152
 153 void link_update_operstate(Link *link);
 154 int link_update(Link *link, sd_netlink_message *message);
 155
 156 void link_dirty(Link *link);
 157 void link_clean(Link *link);
 158 int link_save(Link *link);
 159
 160 int link_carrier_reset(Link *link);
 161 bool link_has_carrier(Link *link);
 162
 163 int link_ipv6ll_gained(Link *link, const struct in6_addr *address);
 164
 165 int link_set_mtu(Link *link, uint32_t mtu);
 166
 167 int ipv4ll_configure(Link *link);
 168 int dhcp4_configure(Link *link);
 169 int dhcp4_set_client_identifier(Link *link);
 170 int dhcp4_set_promote_secondaries(Link *link);
 171 int dhcp6_request_prefix_delegation(Link *link);
 172 int dhcp6_configure(Link *link);
 173 int dhcp6_request_address(Link *link, int ir);
 174 int dhcp6_lease_pd_prefix_lost(sd_dhcp6_client *client, 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 const char* link_operstate_to_string(LinkOperationalState s) _const_;
 180 LinkOperationalState link_operstate_from_string(const char *s) _pure_;
 181
 182 extern const sd_bus_vtable link_vtable[];
 183
 184 int link_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error);
 185 int link_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error);
 186 int link_send_changed(Link *link, const char *property, ...) _sentinel_;
 187
 188 uint32_t link_get_vrf_table(Link *link);
 189 uint32_t link_get_dhcp_route_table(Link *link);
 190 uint32_t link_get_ipv6_accept_ra_route_table(Link *link);
 191
 192 /* Macros which append INTERFACE= to the message */
 193
 194 #define log_link_full(link, level, error, ...)                          \
 195         ({                                                              \
 196                 const Link *_l = (link);                                \
 197                 _l ? log_object_internal(level, error, __FILE__, __LINE__, __func__, "INTERFACE=", _l->ifname, NULL, NULL, ##__VA_ARGS__) : \
 198                         log_internal(level, error, __FILE__, __LINE__, __func__, ##__VA_ARGS__); \
 199         })                                                              \
 200
 201 #define log_link_debug(link, ...)   log_link_full(link, LOG_DEBUG, 0, ##__VA_ARGS__)
 202 #define log_link_info(link, ...)    log_link_full(link, LOG_INFO, 0, ##__VA_ARGS__)
 203 #define log_link_notice(link, ...)  log_link_full(link, LOG_NOTICE, 0, ##__VA_ARGS__)
 204 #define log_link_warning(link, ...) log_link_full(link, LOG_WARNING, 0, ##__VA_ARGS__)
 205 #define log_link_error(link, ...)   log_link_full(link, LOG_ERR, 0, ##__VA_ARGS__)
 206
 207 #define log_link_debug_errno(link, error, ...)   log_link_full(link, LOG_DEBUG, error, ##__VA_ARGS__)
 208 #define log_link_info_errno(link, error, ...)    log_link_full(link, LOG_INFO, error, ##__VA_ARGS__)
 209 #define log_link_notice_errno(link, error, ...)  log_link_full(link, LOG_NOTICE, error, ##__VA_ARGS__)
 210 #define log_link_warning_errno(link, error, ...) log_link_full(link, LOG_WARNING, error, ##__VA_ARGS__)
 211 #define log_link_error_errno(link, error, ...)   log_link_full(link, LOG_ERR, error, ##__VA_ARGS__)
 212
 213 #define LOG_LINK_MESSAGE(link, fmt, ...) "MESSAGE=%s: " fmt, (link)->ifname, ##__VA_ARGS__
 214 #define LOG_LINK_INTERFACE(link) "INTERFACE=%s", (link)->ifname
 215
 216 #define ADDRESS_FMT_VAL(address)                   \
 217         be32toh((address).s_addr) >> 24,           \
 218         (be32toh((address).s_addr) >> 16) & 0xFFu, \
 219         (be32toh((address).s_addr) >> 8) & 0xFFu,  \
 220         be32toh((address).s_addr) & 0xFFu