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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 "networkd-util.h" | |
21 | #include "ordered-set.h" | |
22 | #include "resolve-util.h" | |
23 | #include "set.h" | |
24 | ||
25 | typedef enum LinkState { | |
26 | LINK_STATE_PENDING, /* udev has not initialized the link */ | |
27 | LINK_STATE_INITIALIZED, /* udev has initialized the link */ | |
28 | LINK_STATE_CONFIGURING, /* configuring addresses, routes, etc. */ | |
29 | LINK_STATE_CONFIGURED, /* everything is configured */ | |
30 | LINK_STATE_UNMANAGED, /* Unmanaged=yes is set */ | |
31 | LINK_STATE_FAILED, /* at least one configuration process failed */ | |
32 | LINK_STATE_LINGER, /* RTM_DELLINK for the link has been received */ | |
33 | _LINK_STATE_MAX, | |
34 | _LINK_STATE_INVALID = -1 | |
35 | } LinkState; | |
36 | ||
37 | typedef struct Manager Manager; | |
38 | typedef struct Network Network; | |
39 | typedef struct Address Address; | |
40 | typedef struct DUID DUID; | |
41 | ||
42 | typedef struct Link { | |
43 | Manager *manager; | |
44 | ||
45 | unsigned n_ref; | |
46 | ||
47 | int ifindex; | |
48 | int master_ifindex; | |
49 | char *ifname; | |
50 | char *kind; | |
51 | unsigned short iftype; | |
52 | char *state_file; | |
53 | struct ether_addr mac; | |
54 | struct in6_addr ipv6ll_address; | |
55 | uint32_t mtu; | |
56 | sd_device *sd_device; | |
57 | ||
58 | unsigned flags; | |
59 | uint8_t kernel_operstate; | |
60 | ||
61 | Network *network; | |
62 | ||
63 | LinkState state; | |
64 | LinkOperationalState operstate; | |
65 | LinkCarrierState carrier_state; | |
66 | LinkAddressState address_state; | |
67 | ||
68 | unsigned address_messages; | |
69 | unsigned address_label_messages; | |
70 | unsigned neighbor_messages; | |
71 | unsigned route_messages; | |
72 | unsigned routing_policy_rule_messages; | |
73 | unsigned routing_policy_rule_remove_messages; | |
74 | unsigned enslaving; | |
75 | ||
76 | Set *addresses; | |
77 | Set *addresses_foreign; | |
78 | Set *routes; | |
79 | Set *routes_foreign; | |
80 | ||
81 | bool addresses_configured; | |
82 | bool addresses_ready; | |
83 | ||
84 | sd_dhcp_client *dhcp_client; | |
85 | sd_dhcp_lease *dhcp_lease, *dhcp_lease_old; | |
86 | Set *dhcp_routes; | |
87 | char *lease_file; | |
88 | uint32_t original_mtu; | |
89 | unsigned dhcp4_messages; | |
90 | bool dhcp4_configured:1; | |
91 | bool dhcp6_configured:1; | |
92 | ||
93 | unsigned ndisc_messages; | |
94 | bool ndisc_configured; | |
95 | ||
96 | sd_ipv4ll *ipv4ll; | |
97 | bool ipv4ll_address:1; | |
98 | bool ipv4ll_route:1; | |
99 | ||
100 | bool neighbors_configured:1; | |
101 | bool static_routes_configured:1; | |
102 | bool routing_policy_rules_configured:1; | |
103 | bool setting_mtu:1; | |
104 | ||
105 | LIST_HEAD(Address, pool_addresses); | |
106 | ||
107 | sd_dhcp_server *dhcp_server; | |
108 | ||
109 | sd_ndisc *ndisc; | |
110 | Set *ndisc_rdnss; | |
111 | Set *ndisc_dnssl; | |
112 | ||
113 | sd_radv *radv; | |
114 | ||
115 | sd_dhcp6_client *dhcp6_client; | |
116 | ||
117 | /* This is about LLDP reception */ | |
118 | sd_lldp *lldp; | |
119 | char *lldp_file; | |
120 | ||
121 | /* This is about LLDP transmission */ | |
122 | unsigned lldp_tx_fast; /* The LLDP txFast counter (See 802.1ab-2009, section 9.2.5.18) */ | |
123 | sd_event_source *lldp_emit_event_source; | |
124 | ||
125 | Hashmap *bound_by_links; | |
126 | Hashmap *bound_to_links; | |
127 | Set *slaves; | |
128 | ||
129 | /* For speed meter */ | |
130 | struct rtnl_link_stats64 stats_old, stats_new; | |
131 | bool stats_updated; | |
132 | ||
133 | int sysctl_ipv6_enabled; | |
134 | ||
135 | /* All kinds of DNS configuration */ | |
136 | struct in_addr_data *dns; | |
137 | unsigned n_dns; | |
138 | OrderedSet *search_domains, *route_domains; | |
139 | ||
140 | int dns_default_route; | |
141 | ResolveSupport llmnr; | |
142 | ResolveSupport mdns; | |
143 | DnssecMode dnssec_mode; | |
144 | DnsOverTlsMode dns_over_tls_mode; | |
145 | Set *dnssec_negative_trust_anchors; | |
146 | ||
147 | char **ntp; | |
148 | } Link; | |
149 | ||
150 | typedef int (*link_netlink_message_handler_t)(sd_netlink*, sd_netlink_message*, Link*); | |
151 | ||
152 | DUID *link_get_duid(Link *link); | |
153 | int get_product_uuid_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error); | |
154 | ||
155 | void link_ntp_settings_clear(Link *link); | |
156 | void link_dns_settings_clear(Link *link); | |
157 | Link *link_unref(Link *link); | |
158 | Link *link_ref(Link *link); | |
159 | DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_unref); | |
160 | DEFINE_TRIVIAL_DESTRUCTOR(link_netlink_destroy_callback, Link, link_unref); | |
161 | ||
162 | int link_get(Manager *m, int ifindex, Link **ret); | |
163 | int link_add(Manager *manager, sd_netlink_message *message, Link **ret); | |
164 | void link_drop(Link *link); | |
165 | ||
166 | int link_down(Link *link, link_netlink_message_handler_t callback); | |
167 | ||
168 | void link_enter_failed(Link *link); | |
169 | int link_initialized(Link *link, sd_device *device); | |
170 | ||
171 | void link_set_state(Link *link, LinkState state); | |
172 | void link_check_ready(Link *link); | |
173 | ||
174 | void link_update_operstate(Link *link, bool also_update_bond_master); | |
175 | int link_update(Link *link, sd_netlink_message *message); | |
176 | ||
177 | void link_dirty(Link *link); | |
178 | void link_clean(Link *link); | |
179 | int link_save(Link *link); | |
180 | ||
181 | int link_carrier_reset(Link *link); | |
182 | bool link_has_carrier(Link *link); | |
183 | ||
184 | int link_ipv6ll_gained(Link *link, const struct in6_addr *address); | |
185 | ||
186 | int link_set_mtu(Link *link, uint32_t mtu); | |
187 | ||
188 | bool link_ipv4ll_enabled(Link *link, AddressFamilyBoolean mask); | |
189 | ||
190 | int link_stop_clients(Link *link, bool may_keep_dhcp); | |
191 | ||
192 | const char* link_state_to_string(LinkState s) _const_; | |
193 | LinkState link_state_from_string(const char *s) _pure_; | |
194 | ||
195 | uint32_t link_get_vrf_table(Link *link); | |
196 | uint32_t link_get_dhcp_route_table(Link *link); | |
197 | uint32_t link_get_ipv6_accept_ra_route_table(Link *link); | |
198 | int link_request_set_routes(Link *link); | |
199 | ||
200 | int link_sysctl_ipv6_enabled(Link *link); | |
201 | ||
202 | #define ADDRESS_FMT_VAL(address) \ | |
203 | be32toh((address).s_addr) >> 24, \ | |
204 | (be32toh((address).s_addr) >> 16) & 0xFFu, \ | |
205 | (be32toh((address).s_addr) >> 8) & 0xFFu, \ | |
206 | be32toh((address).s_addr) & 0xFFu |