summaryrefslogtreecommitdiff
path: root/src/network/networkd.h
blob: 3e4e1f2ba6d929c0518ae5b477674a8f288f1fe4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/

/***
  This file is part of systemd.

  Copyright 2013 Tom Gundersen <teg@jklm.no>

  systemd is free software; you can redistribute it and/or modify it
  under the terms of the GNU Lesser General Public License as published by
  the Free Software Foundation; either version 2.1 of the License, or
  (at your option) any later version.

  systemd is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public License
  along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/

#pragma once

#include <arpa/inet.h>

#include "sd-event.h"
#include "sd-rtnl.h"
#include "sd-bus.h"
#include "sd-dhcp-client.h"
#include "sd-ipv4ll.h"
#include "udev.h"

#include "rtnl-util.h"
#include "hashmap.h"
#include "list.h"
#include "set.h"
#include "condition-util.h"

#define CACHE_INFO_INFINITY_LIFE_TIME 0xFFFFFFFFU

typedef struct NetDev NetDev;
typedef struct Network Network;
typedef struct Link Link;
typedef struct Address Address;
typedef struct Route Route;
typedef struct Manager Manager;

typedef struct netdev_enslave_callback netdev_enslave_callback;

struct netdev_enslave_callback {
        sd_rtnl_message_handler_t callback;
        Link *link;

        LIST_FIELDS(netdev_enslave_callback, callbacks);
};

typedef enum MacVlanMode {
        NETDEV_MACVLAN_MODE_PRIVATE = MACVLAN_MODE_PRIVATE,
        NETDEV_MACVLAN_MODE_VEPA = MACVLAN_MODE_VEPA,
        NETDEV_MACVLAN_MODE_BRIDGE = MACVLAN_MODE_BRIDGE,
        NETDEV_MACVLAN_MODE_PASSTHRU = MACVLAN_MODE_PASSTHRU,
        _NETDEV_MACVLAN_MODE_MAX,
        _NETDEV_MACVLAN_MODE_INVALID = -1
} MacVlanMode;

typedef enum NetDevKind {
        NETDEV_KIND_BRIDGE,
        NETDEV_KIND_BOND,
        NETDEV_KIND_VLAN,
        NETDEV_KIND_MACVLAN,
        NETDEV_KIND_IPIP,
        NETDEV_KIND_GRE,
        NETDEV_KIND_SIT,
        _NETDEV_KIND_MAX,
        _NETDEV_KIND_INVALID = -1
} NetDevKind;

typedef enum NetDevState {
        NETDEV_STATE_FAILED,
        NETDEV_STATE_CREATING,
        NETDEV_STATE_READY,
        NETDEV_STATE_LINGER,
        _NETDEV_STATE_MAX,
        _NETDEV_STATE_INVALID = -1,
} NetDevState;

struct NetDev {
        Manager *manager;

        int n_ref;

        char *filename;

        Condition *match_host;
        Condition *match_virt;
        Condition *match_kernel;
        Condition *match_arch;

        char *description;
        char *ifname;
        size_t mtu;
        NetDevKind kind;

        uint64_t vlanid;
        int32_t macvlan_mode;

        int ifindex;
        NetDevState state;

        unsigned tunnel_ttl;
        unsigned tunnel_tos;
        struct in_addr tunnel_local;
        struct in_addr tunnel_remote;

        LIST_HEAD(netdev_enslave_callback, callbacks);
};

struct Network {
        Manager *manager;

        char *filename;

        struct ether_addr *match_mac;
        char *match_path;
        char *match_driver;
        char *match_type;
        char *match_name;
        Condition *match_host;
        Condition *match_virt;
        Condition *match_kernel;
        Condition *match_arch;

        char *description;
        NetDev *bridge;
        NetDev *bond;
        NetDev *tunnel;
        Hashmap *vlans;
        Hashmap *macvlans;
        bool dhcp;
        bool dhcp_dns;
        bool dhcp_mtu;
        bool dhcp_hostname;
        bool dhcp_domainname;
        bool dhcp_critical;
        bool ipv4ll;

        LIST_HEAD(Address, static_addresses);
        LIST_HEAD(Route, static_routes);

        Hashmap *addresses_by_section;
        Hashmap *routes_by_section;

        LIST_HEAD(Address, dns);

        LIST_FIELDS(Network, networks);
};

struct Address {
        Network *network;
        uint64_t section;

        unsigned char family;
        unsigned char prefixlen;
        unsigned char scope;
        char *label;

        struct in_addr broadcast;
        struct ifa_cacheinfo cinfo;

        union {
                struct in_addr in;
                struct in6_addr in6;
        } in_addr;

        LIST_FIELDS(Address, addresses);
};

struct Route {
        Network *network;
        uint64_t section;

        unsigned char family;
        unsigned char dst_prefixlen;
        unsigned char scope;
        uint32_t metrics;

        union {
                struct in_addr in;
                struct in6_addr in6;
        } in_addr;

        union {
                struct in_addr in;
                struct in6_addr in6;
        } dst_addr;

        LIST_FIELDS(Route, routes);
};

typedef enum LinkState {
        LINK_STATE_INITIALIZING,
        LINK_STATE_ENSLAVING,
        LINK_STATE_SETTING_ADDRESSES,
        LINK_STATE_SETTING_ROUTES,
        LINK_STATE_CONFIGURED,
        LINK_STATE_UNMANAGED,
        LINK_STATE_FAILED,
        LINK_STATE_LINGER,
        _LINK_STATE_MAX,
        _LINK_STATE_INVALID = -1
} LinkState;

struct Link {
        Manager *manager;

        int n_ref;

        uint64_t ifindex;
        char *ifname;
        char *state_file;
        struct ether_addr mac;
        struct udev_device *udev_device;

        unsigned flags;
        uint8_t operstate;

        Network *network;

        LinkState state;

        unsigned addr_messages;
        unsigned route_messages;
        unsigned enslaving;

        LIST_HEAD(Address, addresses);

        sd_dhcp_client *dhcp_client;
        sd_dhcp_lease *dhcp_lease;
        char *lease_file;
        uint16_t original_mtu;
        sd_ipv4ll *ipv4ll;
};

struct Manager {
        sd_rtnl *rtnl;
        sd_event *event;
        sd_bus *bus;
        struct udev *udev;
        struct udev_monitor *udev_monitor;
        sd_event_source *udev_event_source;
        sd_event_source *sigterm_event_source;
        sd_event_source *sigint_event_source;

        char *state_file;

        Hashmap *links;
        Hashmap *netdevs;
        LIST_HEAD(Network, networks);

        usec_t network_dirs_ts_usec;
        struct kmod_ctx *kmod_ctx;
};

extern const char* const network_dirs[];

/* Manager */

int manager_new(Manager **ret);
void manager_free(Manager *m);

int manager_load_config(Manager *m);
bool manager_should_reload(Manager *m);

int manager_rtnl_enumerate_links(Manager *m);

int manager_rtnl_listen(Manager *m);
int manager_udev_listen(Manager *m);
int manager_bus_listen(Manager *m);

int manager_save(Manager *m);

DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
#define _cleanup_manager_free_ _cleanup_(manager_freep)

/* NetDev */

int netdev_load(Manager *manager);
void netdev_drop(NetDev *netdev);

NetDev *netdev_unref(NetDev *netdev);
NetDev *netdev_ref(NetDev *netdev);

DEFINE_TRIVIAL_CLEANUP_FUNC(NetDev*, netdev_unref);
#define _cleanup_netdev_unref_ _cleanup_(netdev_unrefp)

int netdev_get(Manager *manager, const char *name, NetDev **ret);
int netdev_set_ifindex(NetDev *netdev, sd_rtnl_message *newlink);
int netdev_enslave(NetDev *netdev, Link *link, sd_rtnl_message_handler_t cb);
int netdev_create_tunnel(Link *link, sd_rtnl_message_handler_t callback);

const char *netdev_kind_to_string(NetDevKind d) _const_;
NetDevKind netdev_kind_from_string(const char *d) _pure_;

const char *macvlan_mode_to_string(MacVlanMode d) _const_;
MacVlanMode macvlan_mode_from_string(const char *d) _pure_;

int config_parse_netdev_kind(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);

int config_parse_macvlan_mode(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);

/* gperf */
const struct ConfigPerfItem* network_netdev_gperf_lookup(const char *key, unsigned length);

/* Network */

int network_load(Manager *manager);

void network_free(Network *network);

DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free);
#define _cleanup_network_free_ _cleanup_(network_freep)

int network_get(Manager *manager, struct udev_device *device,
                const char *ifname, const struct ether_addr *mac,
                Network **ret);
int network_apply(Manager *manager, Network *network, Link *link);

int config_parse_netdev(const char *unit, const char *filename, unsigned line,
                        const char *section, unsigned section_line, const char *lvalue,
                        int ltype, const char *rvalue, void *data, void *userdata);

int config_parse_tunnel(const char *unit,
                        const char *filename,
                        unsigned line,
                        const char *section,
                        unsigned section_line,
                        const char *lvalue,
                        int ltype,
                        const char *rvalue,
                        void *data,
                        void *userdata);

int config_parse_tunnel_address(const char *unit,
                                const char *filename,
                                unsigned line,
                                const char *section,
                                unsigned section_line,
                                const char *lvalue,
                                int ltype,
                                const char *rvalue,
                                void *data,
                                void *userdata);

/* gperf */
const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, unsigned length);

/* Route */
int route_new_static(Network *network, unsigned section, Route **ret);
int route_new_dynamic(Route **ret);
void route_free(Route *route);
int route_configure(Route *route, Link *link, sd_rtnl_message_handler_t callback);
int route_drop(Route *route, Link *link, sd_rtnl_message_handler_t callback);


DEFINE_TRIVIAL_CLEANUP_FUNC(Route*, route_free);
#define _cleanup_route_free_ _cleanup_(route_freep)

int config_parse_gateway(const char *unit, const char *filename, unsigned line,
                         const char *section, unsigned section_line, const char *lvalue,
                         int ltype, const char *rvalue, void *data, void *userdata);

int config_parse_destination(const char *unit, const char *filename, unsigned line,
                             const char *section, unsigned section_line, const char *lvalue,
                             int ltype, const char *rvalue, void *data, void *userdata);

/* Address */
int address_new_static(Network *network, unsigned section, Address **ret);
int address_new_dynamic(Address **ret);
void address_free(Address *address);
int address_configure(Address *address, Link *link, sd_rtnl_message_handler_t callback);
int address_update(Address *address, Link *link, sd_rtnl_message_handler_t callback);
int address_drop(Address *address, Link *link, sd_rtnl_message_handler_t callback);
bool address_equal(Address *a1, Address *a2);

DEFINE_TRIVIAL_CLEANUP_FUNC(Address*, address_free);
#define _cleanup_address_free_ _cleanup_(address_freep)

int config_parse_dns(const char *unit, const char *filename, unsigned line,
                     const char *section, unsigned section_line, const char *lvalue,
                     int ltype, const char *rvalue, void *data, void *userdata);

int config_parse_address(const char *unit, const char *filename, unsigned line,
                         const char *section, unsigned section_line, const char *lvalue,
                         int ltype, const char *rvalue, void *data, void *userdata);

int config_parse_broadcast(const char *unit, const char *filename, unsigned line,
                           const char *section, unsigned section_line, const char *lvalue,
                           int ltype, const char *rvalue, void *data, void *userdata);

int config_parse_label(const char *unit, const char *filename, unsigned line,
                       const char *section, unsigned section_line, const char *lvalue,
                       int ltype, const char *rvalue, void *data, void *userdata);

/* Link */

Link *link_unref(Link *link);
Link *link_ref(Link *link);
int link_get(Manager *m, int ifindex, Link **ret);
int link_add(Manager *manager, sd_rtnl_message *message, Link **ret);
void link_drop(Link *link);

int link_update(Link *link, sd_rtnl_message *message);
int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message, void *userdata);

int link_initialized(Link *link, struct udev_device *device);

int link_save(Link *link);

bool link_has_carrier(unsigned flags, uint8_t operstate);

const char* link_state_to_string(LinkState s) _const_;
LinkState link_state_from_string(const char *s) _pure_;

DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_unref);
#define _cleanup_link_unref_ _cleanup_(link_unrefp)

/* Macros which append INTERFACE= to the message */

#define log_full_link(level, link, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", link->ifname, "%*s: " fmt, IFNAMSIZ, link->ifname, ##__VA_ARGS__)
#define log_debug_link(link, ...)       log_full_link(LOG_DEBUG, link, ##__VA_ARGS__)
#define log_info_link(link, ...)        log_full_link(LOG_INFO, link, ##__VA_ARGS__)
#define log_notice_link(link, ...)      log_full_link(LOG_NOTICE, link, ##__VA_ARGS__)
#define log_warning_link(link, ...)     log_full_link(LOG_WARNING, link, ##__VA_ARGS__)
#define log_error_link(link, ...)       log_full_link(LOG_ERR, link, ##__VA_ARGS__)

#define log_struct_link(level, link, ...) log_struct(level, "INTERFACE=%s", link->ifname, __VA_ARGS__)

/* More macros which append INTERFACE= to the message */

#define log_full_netdev(level, netdev, fmt, ...) log_meta_object(level, __FILE__, __LINE__, __func__, "INTERFACE=", netdev->ifname, "%*s: " fmt, IFNAMSIZ, netdev->ifname, ##__VA_ARGS__)
#define log_debug_netdev(netdev, ...)       log_full_netdev(LOG_DEBUG, netdev, ##__VA_ARGS__)
#define log_info_netdev(netdev, ...)        log_full_netdev(LOG_INFO, netdev, ##__VA_ARGS__)
#define log_notice_netdev(netdev, ...)      log_full_netdev(LOG_NOTICE, netdev, ##__VA_ARGS__)
#define log_warning_netdev(netdev, ...)     log_full_netdev(LOG_WARNING, netdev,## __VA_ARGS__)
#define log_error_netdev(netdev, ...)       log_full_netdev(LOG_ERR, netdev, ##__VA_ARGS__)

#define log_struct_netdev(level, netdev, ...) log_struct(level, "INTERFACE=%s", netdev->ifname, __VA_ARGS__)

#define NETDEV(netdev) "INTERFACE=%s", netdev->ifname
#define ADDRESS_FMT_VAL(address)            \
        (address).s_addr & 0xFF,            \
        ((address).s_addr >> 8) & 0xFF,     \
        ((address).s_addr >> 16) & 0xFF,    \
        (address).s_addr >> 24