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 char *ifname;
56 char **alternative_names;
57 char *kind;
58 unsigned short iftype;
59 char *state_file;
60 struct hw_addr_data hw_addr;
61 struct hw_addr_data bcast_addr;
62 struct hw_addr_data permanent_hw_addr;
63 struct hw_addr_data requested_hw_addr;
64 struct in6_addr ipv6ll_address;
65 uint32_t mtu;
66 uint32_t min_mtu;
67 uint32_t max_mtu;
68 uint32_t original_mtu;
69 sd_device *sd_device;
70 char *driver;
71
72 /* link-local addressing */
73 IPv6LinkLocalAddressGenMode ipv6ll_address_gen_mode;
74
75 /* wlan */
76 enum nl80211_iftype wlan_iftype;
77 char *ssid;
78 char *previous_ssid;
79 struct ether_addr bssid;
80
81 unsigned flags;
82 uint8_t kernel_operstate;
83
84 sd_event_source *carrier_lost_timer;
85
86 Network *network;
87 NetDev *netdev;
88
89 LinkState state;
90 LinkOperationalState operstate;
91 LinkCarrierState carrier_state;
92 LinkAddressState address_state;
93 LinkAddressState ipv4_address_state;
94 LinkAddressState ipv6_address_state;
95 LinkOnlineState online_state;
96
97 unsigned static_address_messages;
98 unsigned static_address_label_messages;
99 unsigned static_bridge_fdb_messages;
100 unsigned static_bridge_mdb_messages;
101 unsigned static_ipv6_proxy_ndp_messages;
102 unsigned static_neighbor_messages;
103 unsigned static_nexthop_messages;
104 unsigned static_route_messages;
105 unsigned static_routing_policy_rule_messages;
106 unsigned tc_messages;
107 unsigned sr_iov_messages;
108 unsigned set_link_messages;
109 unsigned set_flags_messages;
110 unsigned create_stacked_netdev_messages;
111
112 Set *addresses;
113 Set *neighbors;
114 Set *routes;
115 Set *nexthops;
116 Set *qdiscs;
117 Set *tclasses;
118
119 sd_dhcp_client *dhcp_client;
120 sd_dhcp_lease *dhcp_lease;
121 char *lease_file;
122 unsigned dhcp4_messages;
123 bool dhcp4_route_failed:1;
124 bool dhcp4_route_retrying:1;
125 bool dhcp4_configured:1;
126 char *dhcp4_6rd_tunnel_name;
127
128 sd_ipv4ll *ipv4ll;
129 bool ipv4ll_address_configured:1;
130
131 bool static_addresses_configured:1;
132 bool static_address_labels_configured:1;
133 bool static_bridge_fdb_configured:1;
134 bool static_bridge_mdb_configured:1;
135 bool static_ipv6_proxy_ndp_configured:1;
136 bool static_neighbors_configured:1;
137 bool static_nexthops_configured:1;
138 bool static_routes_configured:1;
139 bool static_routing_policy_rules_configured:1;
140 bool tc_configured:1;
141 bool sr_iov_configured:1;
142 bool activated:1;
143 bool master_set:1;
144 bool stacked_netdevs_created:1;
145
146 sd_dhcp_server *dhcp_server;
147
148 sd_ndisc *ndisc;
149 Set *ndisc_rdnss;
150 Set *ndisc_dnssl;
151 unsigned ndisc_messages;
152 bool ndisc_configured:1;
153
154 sd_radv *radv;
155
156 sd_dhcp6_client *dhcp6_client;
157 sd_dhcp6_lease *dhcp6_lease;
158 unsigned dhcp6_messages;
159 bool dhcp6_configured;
160
161 Set *dhcp_pd_prefixes;
162 unsigned dhcp_pd_messages;
163 bool dhcp_pd_configured;
164
165 /* This is about LLDP reception */
166 sd_lldp_rx *lldp_rx;
167 char *lldp_file;
168
169 /* This is about LLDP transmission */
170 sd_lldp_tx *lldp_tx;
171
172 Hashmap *bound_by_links;
173 Hashmap *bound_to_links;
174 Set *slaves;
175
176 /* For speed meter */
177 struct rtnl_link_stats64 stats_old, stats_new;
178 bool stats_updated;
179
180 /* All kinds of DNS configuration the user configured via D-Bus */
181 struct in_addr_full **dns;
182 unsigned n_dns;
183 OrderedSet *search_domains, *route_domains;
184
185 int dns_default_route;
186 ResolveSupport llmnr;
187 ResolveSupport mdns;
188 DnssecMode dnssec_mode;
189 DnsOverTlsMode dns_over_tls_mode;
190 Set *dnssec_negative_trust_anchors;
191
192 /* Similar, but NTP server configuration */
193 char **ntp;
194 } Link;
195
196 typedef int (*link_netlink_message_handler_t)(sd_netlink*, sd_netlink_message*, Link*);
197
198 bool link_is_ready_to_configure(Link *link, bool allow_unmanaged);
199
200 void link_ntp_settings_clear(Link *link);
201 void link_dns_settings_clear(Link *link);
202 Link *link_unref(Link *link);
203 Link *link_ref(Link *link);
204 DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_unref);
205 DEFINE_TRIVIAL_DESTRUCTOR(link_netlink_destroy_callback, Link, link_unref);
206
207 int link_get_by_index(Manager *m, int ifindex, Link **ret);
208 int link_get_by_name(Manager *m, const char *ifname, Link **ret);
209 int link_get_by_hw_addr(Manager *m, const struct hw_addr_data *hw_addr, Link **ret);
210 int link_get_master(Link *link, Link **ret);
211
212 int link_getlink_handler_internal(sd_netlink *rtnl, sd_netlink_message *m, Link *link, const char *error_msg);
213 int link_call_getlink(Link *link, link_netlink_message_handler_t callback);
214 int link_handle_bound_to_list(Link *link);
215
216 void link_enter_failed(Link *link);
217 void link_set_state(Link *link, LinkState state);
218 void link_check_ready(Link *link);
219
220 void link_update_operstate(Link *link, bool also_update_bond_master);
221
link_has_carrier(Link * link)222 static inline bool link_has_carrier(Link *link) {
223 assert(link);
224 return netif_has_carrier(link->kernel_operstate, link->flags);
225 }
226
227 bool link_ipv6_enabled(Link *link);
228 int link_ipv6ll_gained(Link *link);
229
230 bool link_ipv4ll_enabled(Link *link);
231
232 int link_stop_engines(Link *link, bool may_keep_dhcp);
233
234 const char* link_state_to_string(LinkState s) _const_;
235 LinkState link_state_from_string(const char *s) _pure_;
236
237 int link_reconfigure(Link *link, bool force);
238 int link_reconfigure_after_sleep(Link *link);
239
240 int manager_udev_process_link(sd_device_monitor *monitor, sd_device *device, void *userdata);
241 int manager_rtnl_process_link(sd_netlink *rtnl, sd_netlink_message *message, Manager *m);
242
243 int link_flags_to_string_alloc(uint32_t flags, char **ret);
244 const char *kernel_operstate_to_string(int t) _const_;
245