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_ENSLAVED,
  38         LINK_OPERSTATE_ROUTABLE,
  39         _LINK_OPERSTATE_MAX,
  40         _LINK_OPERSTATE_INVALID = -1
  41 } LinkOperationalState;
  42
  43 typedef struct Manager Manager;
  44 typedef struct Network Network;
  45 typedef struct Address Address;
  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         char *ifname;
  56         char *kind;
  57         unsigned short iftype;
  58         char *state_file;
  59         struct ether_addr mac;
  60         struct in6_addr ipv6ll_address;
  61         uint32_t mtu;
  62         sd_device *sd_device;
  63
  64         unsigned flags;
  65         uint8_t kernel_operstate;
  66
  67         Network *network;
  68
  69         LinkState state;
  70         LinkOperationalState operstate;
  71
  72         unsigned address_messages;
  73         unsigned address_label_messages;
  74         unsigned neighbor_messages;
  75         unsigned route_messages;
  76         unsigned routing_policy_rule_messages;
  77         unsigned routing_policy_rule_remove_messages;
  78         unsigned enslaving;
  79         /* link_is_enslaved() has additional checks. So, it is named _raw. */
  80         bool enslaved_raw;
  81
  82         Set *addresses;
  83         Set *addresses_foreign;
  84         Set *routes;
  85         Set *routes_foreign;
  86
  87         bool addresses_configured;
  88         bool addresses_ready;
  89
  90         sd_dhcp_client *dhcp_client;
  91         sd_dhcp_lease *dhcp_lease;
  92         char *lease_file;
  93         uint32_t original_mtu;
  94         unsigned dhcp4_messages;
  95         bool dhcp4_configured;
  96         bool dhcp6_configured;
  97
  98         unsigned ndisc_messages;
  99         bool ndisc_configured;
 100
 101         sd_ipv4ll *ipv4ll;
 102         bool ipv4ll_address:1;
 103         bool ipv4ll_route:1;
 104
 105         bool neighbors_configured;
 106
 107         bool static_routes_configured;
 108         bool routing_policy_rules_configured;
 109         bool setting_mtu;
 110
 111         LIST_HEAD(Address, pool_addresses);
 112
 113         sd_dhcp_server *dhcp_server;
 114
 115         sd_ndisc *ndisc;
 116         Set *ndisc_rdnss;
 117         Set *ndisc_dnssl;
 118
 119         sd_radv *radv;
 120
 121         sd_dhcp6_client *dhcp6_client;
 122         bool rtnl_extended_attrs;
 123
 124         /* This is about LLDP reception */
 125         sd_lldp *lldp;
 126         char *lldp_file;
 127
 128         /* This is about LLDP transmission */
 129         unsigned lldp_tx_fast; /* The LLDP txFast counter (See 802.1ab-2009, section 9.2.5.18) */
 130         sd_event_source *lldp_emit_event_source;
 131
 132         Hashmap *bound_by_links;
 133         Hashmap *bound_to_links;
 134         Hashmap *slaves;
 135 } Link;
 136
 137 typedef int (*link_netlink_message_handler_t)(sd_netlink*, sd_netlink_message*, Link*);
 138
 139 DUID *link_get_duid(Link *link);
 140 int get_product_uuid_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error);
 141
 142 Link *link_unref(Link *link);
 143 Link *link_ref(Link *link);
 144 DEFINE_TRIVIAL_DESTRUCTOR(link_netlink_destroy_callback, Link, link_unref);
 145
 146 int link_get(Manager *m, int ifindex, Link **ret);
 147 int link_add(Manager *manager, sd_netlink_message *message, Link **ret);
 148 void link_drop(Link *link);
 149
 150 int link_down(Link *link);
 151
 152 void link_enter_failed(Link *link);
 153 int link_initialized(Link *link, sd_device *device);
 154
 155 void link_check_ready(Link *link);
 156
 157 void link_update_operstate(Link *link, bool also_update_bond_master);
 158 int link_update(Link *link, sd_netlink_message *message);
 159
 160 void link_dirty(Link *link);
 161 void link_clean(Link *link);
 162 int link_save(Link *link);
 163
 164 int link_carrier_reset(Link *link);
 165 bool link_has_carrier(Link *link);
 166
 167 int link_ipv6ll_gained(Link *link, const struct in6_addr *address);
 168
 169 int link_set_mtu(Link *link, uint32_t mtu);
 170
 171 int ipv4ll_configure(Link *link);
 172 int dhcp4_configure(Link *link);
 173 int dhcp4_set_client_identifier(Link *link);
 174 int dhcp4_set_promote_secondaries(Link *link);
 175 int dhcp6_request_prefix_delegation(Link *link);
 176 int dhcp6_configure(Link *link);
 177 int dhcp6_request_address(Link *link, int ir);
 178 int dhcp6_lease_pd_prefix_lost(sd_dhcp6_client *client, Link* link);
 179
 180 const char* link_state_to_string(LinkState s) _const_;
 181 LinkState link_state_from_string(const char *s) _pure_;
 182
 183 const char* link_operstate_to_string(LinkOperationalState s) _const_;
 184 LinkOperationalState link_operstate_from_string(const char *s) _pure_;
 185
 186 extern const sd_bus_vtable link_vtable[];
 187
 188 int link_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error);
 189 int link_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error);
 190 int link_send_changed(Link *link, const char *property, ...) _sentinel_;
 191
 192 uint32_t link_get_vrf_table(Link *link);
 193 uint32_t link_get_dhcp_route_table(Link *link);
 194 uint32_t link_get_ipv6_accept_ra_route_table(Link *link);
 195
 196 /* Macros which append INTERFACE= to the message */
 197
 198 #define log_link_full(link, level, error, ...)                          \
 199         ({                                                              \
 200                 const Link *_l = (link);                                \
 201                 _l ? log_object_internal(level, error, __FILE__, __LINE__, __func__, "INTERFACE=", _l->ifname, NULL, NULL, ##__VA_ARGS__) : \
 202                         log_internal(level, error, __FILE__, __LINE__, __func__, ##__VA_ARGS__); \
 203         })                                                              \
 204
 205 #define log_link_debug(link, ...)   log_link_full(link, LOG_DEBUG, 0, ##__VA_ARGS__)
 206 #define log_link_info(link, ...)    log_link_full(link, LOG_INFO, 0, ##__VA_ARGS__)
 207 #define log_link_notice(link, ...)  log_link_full(link, LOG_NOTICE, 0, ##__VA_ARGS__)
 208 #define log_link_warning(link, ...) log_link_full(link, LOG_WARNING, 0, ##__VA_ARGS__)
 209 #define log_link_error(link, ...)   log_link_full(link, LOG_ERR, 0, ##__VA_ARGS__)
 210
 211 #define log_link_debug_errno(link, error, ...)   log_link_full(link, LOG_DEBUG, error, ##__VA_ARGS__)
 212 #define log_link_info_errno(link, error, ...)    log_link_full(link, LOG_INFO, error, ##__VA_ARGS__)
 213 #define log_link_notice_errno(link, error, ...)  log_link_full(link, LOG_NOTICE, error, ##__VA_ARGS__)
 214 #define log_link_warning_errno(link, error, ...) log_link_full(link, LOG_WARNING, error, ##__VA_ARGS__)
 215 #define log_link_error_errno(link, error, ...)   log_link_full(link, LOG_ERR, error, ##__VA_ARGS__)
 216
 217 #define LOG_LINK_MESSAGE(link, fmt, ...) "MESSAGE=%s: " fmt, (link)->ifname, ##__VA_ARGS__
 218 #define LOG_LINK_INTERFACE(link) "INTERFACE=%s", (link)->ifname
 219
 220 #define ADDRESS_FMT_VAL(address)                   \
 221         be32toh((address).s_addr) >> 24,           \
 222         (be32toh((address).s_addr) >> 16) & 0xFFu, \
 223         (be32toh((address).s_addr) >> 8) & 0xFFu,  \
 224         be32toh((address).s_addr) & 0xFFu