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
|
/* $OpenBSD: switchd.h,v 1.29 2019/05/05 21:33:00 akoshibe Exp $ */
/*
* Copyright (c) 2013-2016 Reyk Floeter <reyk@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef SWITCHD_H
#define SWITCHD_H
#include <sys/queue.h>
#include <sys/tree.h>
#include <sys/uio.h>
#include <net/ofp.h>
#include <limits.h>
#include <imsg.h>
#include "ofp10.h"
#include "types.h"
#include "proc.h"
#include "ofp_map.h"
struct switchd;
struct timer {
struct event tmr_ev;
struct switchd *tmr_sc;
void (*tmr_cb)(struct switchd *, void *);
void *tmr_cbarg;
};
struct packet {
union {
struct ether_header *pkt_eh;
uint8_t *pkt_buf;
};
size_t pkt_len;
};
struct macaddr {
uint8_t mac_addr[ETHER_ADDR_LEN];
uint32_t mac_port;
time_t mac_age;
RB_ENTRY(macaddr) mac_entry;
};
RB_HEAD(macaddr_head, macaddr);
struct switch_control {
unsigned int sw_id;
struct sockaddr_storage sw_addr;
struct macaddr_head sw_addrcache;
struct timer sw_timer;
unsigned int sw_cachesize;
RB_ENTRY(switch_control) sw_entry;
};
RB_HEAD(switch_head, switch_control);
struct switch_table {
TAILQ_ENTRY(switch_table) st_entry;
int st_table;
unsigned int st_entries;
unsigned int st_maxentries;
uint32_t st_actions;
uint32_t st_actionsmiss;
uint32_t st_instructions;
uint32_t st_instructionsmiss;
uint64_t st_setfield;
uint64_t st_setfieldmiss;
uint64_t st_match;
uint64_t st_wildcard;
/* Maximum of 256 tables (64 * 4). */
uint64_t st_nexttable[4];
uint64_t st_nexttablemiss[4];
};
TAILQ_HEAD(switch_table_list, switch_table);
struct multipart_message {
SLIST_ENTRY(multipart_message)
mm_entry;
uint32_t mm_xid;
uint8_t mm_type;
};
SLIST_HEAD(multipart_list, multipart_message);
struct switch_address {
enum switch_conn_type swa_type;
struct sockaddr_storage swa_addr;
};
struct switch_connection {
unsigned int con_id;
unsigned int con_instance;
int con_fd;
int con_inflight;
struct sockaddr_storage con_peer;
struct sockaddr_storage con_local;
in_port_t con_port;
uint32_t con_xidnxt;
int con_version;
enum ofp_state con_state;
struct event con_ev;
struct ibuf *con_rbuf;
struct msgbuf con_wbuf;
struct switch_control *con_switch;
struct switchd *con_sc;
struct switch_server *con_srv;
struct multipart_list con_mmlist;
struct switch_table_list
con_stlist;
TAILQ_ENTRY(switch_connection)
con_entry;
};
TAILQ_HEAD(switch_connections, switch_connection);
struct switch_server {
int srv_fd;
int srv_tls;
struct sockaddr_storage srv_addr;
struct event srv_ev;
struct event srv_evt;
struct switchd *srv_sc;
};
struct switch_client {
struct switch_address swc_addr;
struct switch_address swc_target;
struct event swc_ev;
void *swc_arg;
TAILQ_ENTRY(switch_client)
swc_next;
};
TAILQ_HEAD(switch_clients, switch_client);
struct switchd {
struct privsep sc_ps;
struct switch_server sc_server;
int sc_tap;
struct switch_head sc_switches;
uint32_t sc_swid;
unsigned int sc_cache_max;
unsigned int sc_cache_timeout;
char sc_conffile[PATH_MAX];
uint8_t sc_opts;
struct switch_clients sc_clients;
struct switch_connections
sc_conns;
};
struct ofp_callback {
uint8_t cb_type;
int (*cb)(struct switchd *, struct switch_connection *,
struct ofp_header *, struct ibuf *);
int (*validate)(struct switchd *, struct sockaddr_storage *,
struct sockaddr_storage *, struct ofp_header *,
struct ibuf *);
};
#define SWITCHD_OPT_VERBOSE 0x01
#define SWITCHD_OPT_NOACTION 0x04
struct oflowmod_ctx {
uint8_t ctx_flags;
#define OFMCTX_IBUF 0x01
enum oflowmod_state ctx_state;
struct ibuf *ctx_ibuf;
struct ofp_flow_mod *ctx_fm;
size_t ctx_start;
size_t ctx_ostart;
size_t ctx_oend;
size_t ctx_istart;
size_t ctx_iend;
size_t ctx_oioff;
struct ofp_instruction *ctx_oi;
};
/* switchd.c */
int switchd_socket(struct sockaddr *, int);
int switchd_listen(struct sockaddr *);
int switchd_sockaddr(const char *, in_port_t, struct sockaddr_storage *);
int switchd_tap(void);
int switchd_open_device(struct privsep *, const char *, size_t);
struct switch_connection *
switchd_connbyid(struct switchd *, unsigned int, unsigned int);
struct switch_connection *
switchd_connbyaddr(struct switchd *, struct sockaddr *);
/* packet.c */
int packet_ether_input(struct ibuf *, size_t, struct packet *);
int packet_input(struct switchd *, struct switch_control *,
uint32_t, uint32_t *, struct packet *);
/* switch.c */
void switch_init(struct switchd *);
int switch_dispatch_control(int, struct privsep_proc *,
struct imsg *);
struct switch_control
*switch_add(struct switch_connection *);
void switch_remove(struct switchd *, struct switch_control *);
struct switch_control
*switch_get(struct switch_connection *);
struct macaddr *switch_learn(struct switchd *, struct switch_control *,
uint8_t *, uint32_t);
struct macaddr *switch_cached(struct switch_control *, uint8_t *);
RB_PROTOTYPE(switch_head, switch_control, sw_entry, switch_cmp);
RB_PROTOTYPE(macaddr_head, macaddr, mac_entry, switch_maccmp);
/* timer.c */
void timer_set(struct switchd *, struct timer *,
void (*)(struct switchd *, void *), void *);
void timer_add(struct switchd *, struct timer *, int);
void timer_del(struct switchd *, struct timer *);
/* util.c */
void socket_set_blockmode(int, enum blockmodes);
int accept4_reserve(int, struct sockaddr *, socklen_t *,
int, int, volatile int *);
in_port_t socket_getport(struct sockaddr_storage *);
int socket_setport(struct sockaddr_storage *, in_port_t);
int sockaddr_cmp(struct sockaddr *, struct sockaddr *, int);
struct in6_addr *prefixlen2mask6(uint8_t, uint32_t *);
uint32_t prefixlen2mask(uint8_t);
const char *print_host(struct sockaddr_storage *, char *, size_t);
const char *print_ether(const uint8_t *)
__attribute__ ((__bounded__(__minbytes__,1,ETHER_ADDR_LEN)));
const char *print_map(unsigned int, struct constmap *);
void print_verbose(const char *emsg, ...)
__attribute__((__format__ (printf, 1, 2)));
void print_debug(const char *emsg, ...)
__attribute__((__format__ (printf, 1, 2)));
void print_hex(uint8_t *, off_t, size_t);
void getmonotime(struct timeval *);
int parsehostport(const char *, struct sockaddr *, socklen_t);
/* ofrelay.c */
void ofrelay(struct privsep *, struct privsep_proc *);
void ofrelay_run(struct privsep *, struct privsep_proc *, void *);
int ofrelay_attach(struct switch_server *, int,
struct sockaddr *);
void ofrelay_close(struct switch_connection *);
void ofrelay_write(struct switch_connection *, struct ibuf *);
/* ofp.c */
void ofp(struct privsep *, struct privsep_proc *);
void ofp_close(struct switch_connection *);
int ofp_open(struct privsep *, struct switch_connection *);
void ofp_accept(int, short, void *);
int ofp_input(struct switch_connection *, struct ibuf *);
int ofp_nextstate(struct switchd *, struct switch_connection *,
enum ofp_state);
struct switch_table *
switch_tablelookup(struct switch_connection *, int);
struct switch_table *
switch_newtable(struct switch_connection *, int);
void switch_deltable(struct switch_connection *,
struct switch_table *);
void switch_freetables(struct switch_connection *);
/* ofp10.c */
int ofp10_hello(struct switchd *, struct switch_connection *,
struct ofp_header *, struct ibuf *);
int ofp10_validate(struct switchd *,
struct sockaddr_storage *, struct sockaddr_storage *,
struct ofp_header *, struct ibuf *);
int ofp10_input(struct switchd *, struct switch_connection *,
struct ofp_header *, struct ibuf *);
/* ofp13.c */
int ofp13_input(struct switchd *, struct switch_connection *,
struct ofp_header *, struct ibuf *);
int ofp13_hello(struct switchd *, struct switch_connection *,
struct ofp_header *oh, struct ibuf *);
int ofp13_validate(struct switchd *,
struct sockaddr_storage *, struct sockaddr_storage *,
struct ofp_header *, struct ibuf *);
int ofp13_desc(struct switchd *, struct switch_connection *);
int ofp13_flow_stats(struct switchd *, struct switch_connection *,
uint32_t, uint32_t, uint8_t);
int ofp13_table_features(struct switchd *,
struct switch_connection *, uint8_t);
int ofp13_featuresrequest(struct switchd *,
struct switch_connection *);
struct ofp_flow_mod *
ofp13_flowmod(struct switch_connection *, struct ibuf *,
uint8_t, uint8_t, uint16_t, uint16_t, uint16_t);
int ofp13_setconfig(struct switchd *, struct switch_connection *,
uint16_t, uint16_t);
int ofp13_tablemiss_sendctrl(struct switchd *,
struct switch_connection *, uint8_t);
/* ofp_common.c */
int ofp_validate_header(struct switchd *,
struct sockaddr_storage *, struct sockaddr_storage *,
struct ofp_header *, uint8_t);
int ofp_validate(struct switchd *,
struct sockaddr_storage *, struct sockaddr_storage *,
struct ofp_header *, struct ibuf *, uint8_t);
int ofp_output(struct switch_connection *, struct ofp_header *,
struct ibuf *);
struct multipart_message *
ofp_multipart_lookup(struct switch_connection *, uint32_t);
int ofp_multipart_add(struct switch_connection *, uint32_t,
uint8_t);
void ofp_multipart_del(struct switch_connection *, uint32_t);
void ofp_multipart_free(struct switch_connection *,
struct multipart_message *);
void ofp_multipart_clear(struct switch_connection *);
int action_new(struct ibuf *, uint16_t);
int action_group(struct ibuf *, uint32_t);
int action_output(struct ibuf *, uint32_t, uint16_t);
int action_push(struct ibuf *, uint16_t, uint16_t);
int action_pop_vlan(struct ibuf *);
int action_pop_mpls(struct ibuf *, uint16_t);
int action_copyttlout(struct ibuf *);
int action_copyttlin(struct ibuf *);
int action_decnwttl(struct ibuf *);
struct ofp_action_set_field *
action_setfield(struct ibuf *ibuf);
struct ofp_ox_match *
oxm_get(struct ibuf *, uint16_t, int, uint8_t);
int oxm_inport(struct ibuf *, uint32_t);
int oxm_inphyport(struct ibuf *, uint32_t);
int oxm_metadata(struct ibuf *, int, uint64_t, uint64_t);
int oxm_etheraddr(struct ibuf *, int, uint8_t *, uint8_t *);
int oxm_ethertype(struct ibuf *, uint16_t);
int oxm_vlanvid(struct ibuf *, int, uint16_t, uint16_t);
int oxm_vlanpcp(struct ibuf *, uint8_t);
int oxm_ipdscp(struct ibuf *, uint8_t);
int oxm_ipecn(struct ibuf *, uint8_t);
int oxm_ipproto(struct ibuf *, uint8_t);
int oxm_ipaddr(struct ibuf *, int, int, uint32_t, uint32_t);
int oxm_tcpport(struct ibuf *, int, uint16_t);
int oxm_udpport(struct ibuf *, int, uint16_t);
int oxm_sctpport(struct ibuf *, int, uint16_t);
int oxm_icmpv4type(struct ibuf *, uint8_t);
int oxm_icmpv4code(struct ibuf *, uint8_t);
int oxm_arpop(struct ibuf *, uint16_t);
int oxm_arpaddr(struct ibuf *, int, int, uint32_t, uint32_t);
int oxm_arphaddr(struct ibuf *, int, uint8_t *, uint8_t *);
int oxm_ipv6addr(struct ibuf *, int, struct in6_addr *,
struct in6_addr *);
int oxm_ipv6flowlabel(struct ibuf *, int, uint32_t, uint32_t);
int oxm_icmpv6type(struct ibuf *, uint8_t);
int oxm_icmpv6code(struct ibuf *, uint8_t);
int oxm_ipv6ndtarget(struct ibuf *, struct in6_addr *);
int oxm_ipv6ndlinkaddr(struct ibuf *, int, uint8_t *);
int oxm_mplslabel(struct ibuf *, uint32_t);
int oxm_mplstc(struct ibuf *, uint8_t);
int oxm_mplsbos(struct ibuf *, uint8_t);
int oxm_tunnelid(struct ibuf *, int, uint64_t, uint64_t);
int oxm_ipv6exthdr(struct ibuf *, int, uint16_t, uint16_t);
struct ofp_instruction *
ofp_instruction(struct ibuf *, uint16_t, uint16_t);
struct ibuf *
oflowmod_open(struct oflowmod_ctx *,
struct switch_connection *, struct ibuf *, uint8_t);
int oflowmod_close(struct oflowmod_ctx *);
int oflowmod_mopen(struct oflowmod_ctx *);
int oflowmod_mclose(struct oflowmod_ctx *);
int oflowmod_iopen(struct oflowmod_ctx *);
int oflowmod_iclose(struct oflowmod_ctx *);
int oflowmod_instruction(struct oflowmod_ctx *, unsigned int);
int oflowmod_instructionclose(struct oflowmod_ctx *);
int oflowmod_state(struct oflowmod_ctx *,
unsigned int, unsigned int);
int oflowmod_err(struct oflowmod_ctx *, const char *, int);
int ofp_validate_hello(struct switchd *,
struct sockaddr_storage *, struct sockaddr_storage *,
struct ofp_header *, struct ibuf *);
int ofp_recv_hello(struct switchd *, struct switch_connection *,
struct ofp_header *, struct ibuf *);
int ofp_send_hello(struct switchd *, struct switch_connection *,
int);
int ofp_send_featuresrequest(struct switchd *,
struct switch_connection *);
/* ofcconn.c */
void ofcconn(struct privsep *, struct privsep_proc *);
void ofcconn_shutdown(void);
/* imsg_util.c */
struct ibuf *ibuf_new(void *, size_t);
struct ibuf *ibuf_static(void);
int ibuf_cat(struct ibuf *, struct ibuf *);
void ibuf_release(struct ibuf *);
size_t ibuf_length(struct ibuf *);
int ibuf_setsize(struct ibuf *, size_t);
int ibuf_setmax(struct ibuf *, size_t);
uint8_t *ibuf_data(struct ibuf *);
void *ibuf_getdata(struct ibuf *, size_t);
ssize_t ibuf_dataleft(struct ibuf *);
size_t ibuf_dataoffset(struct ibuf *);
struct ibuf *ibuf_get(struct ibuf *, size_t);
struct ibuf *ibuf_dup(struct ibuf *);
struct ibuf *ibuf_random(size_t);
int ibuf_prepend(struct ibuf *, void *, size_t);
void *ibuf_advance(struct ibuf *, size_t);
void ibuf_zero(struct ibuf *);
void ibuf_reset(struct ibuf *);
/* parse.y */
int cmdline_symset(char *);
int parse_config(const char *, struct switchd *);
#endif /* SWITCHD_H */
|
