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2c30e5d1 | 1 | /* Copyright (c) 2008, 2009, 2010 Nicira Networks |
c93b1d6a | 2 | * |
a14bc59f BP |
3 | * Licensed under the Apache License, Version 2.0 (the "License"); |
4 | * you may not use this file except in compliance with the License. | |
5 | * You may obtain a copy of the License at: | |
064af421 | 6 | * |
a14bc59f | 7 | * http://www.apache.org/licenses/LICENSE-2.0 |
064af421 | 8 | * |
a14bc59f BP |
9 | * Unless required by applicable law or agreed to in writing, software |
10 | * distributed under the License is distributed on an "AS IS" BASIS, | |
11 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
12 | * See the License for the specific language governing permissions and | |
13 | * limitations under the License. | |
064af421 BP |
14 | */ |
15 | ||
16 | #include <config.h> | |
17 | #include "bridge.h" | |
18 | #include <assert.h> | |
19 | #include <errno.h> | |
20 | #include <arpa/inet.h> | |
21 | #include <ctype.h> | |
22 | #include <inttypes.h> | |
23 | #include <net/if.h> | |
24 | #include <openflow/openflow.h> | |
25 | #include <signal.h> | |
26 | #include <stdlib.h> | |
27 | #include <strings.h> | |
28 | #include <sys/stat.h> | |
29 | #include <sys/socket.h> | |
7e40e21d | 30 | #include <sys/types.h> |
064af421 BP |
31 | #include <unistd.h> |
32 | #include "bitmap.h" | |
064af421 BP |
33 | #include "coverage.h" |
34 | #include "dirs.h" | |
35 | #include "dpif.h" | |
36 | #include "dynamic-string.h" | |
37 | #include "flow.h" | |
38 | #include "hash.h" | |
39 | #include "list.h" | |
40 | #include "mac-learning.h" | |
41 | #include "netdev.h" | |
42 | #include "odp-util.h" | |
43 | #include "ofp-print.h" | |
44 | #include "ofpbuf.h" | |
d65349ea | 45 | #include "ofproto/netflow.h" |
8cd4882f | 46 | #include "ofproto/ofproto.h" |
da285df4 | 47 | #include "packets.h" |
064af421 BP |
48 | #include "poll-loop.h" |
49 | #include "port-array.h" | |
50 | #include "proc-net-compat.h" | |
51 | #include "process.h" | |
76343538 | 52 | #include "sha1.h" |
6c88d577 | 53 | #include "shash.h" |
064af421 | 54 | #include "socket-util.h" |
fe55ad15 | 55 | #include "stream-ssl.h" |
064af421 BP |
56 | #include "svec.h" |
57 | #include "timeval.h" | |
58 | #include "util.h" | |
da285df4 | 59 | #include "unixctl.h" |
064af421 | 60 | #include "vconn.h" |
b36682d8 | 61 | #include "vswitchd/vswitch-idl.h" |
064af421 BP |
62 | #include "xenserver.h" |
63 | #include "xtoxll.h" | |
72b06300 | 64 | #include "sflow_api.h" |
064af421 BP |
65 | |
66 | #define THIS_MODULE VLM_bridge | |
67 | #include "vlog.h" | |
68 | ||
69 | struct dst { | |
70 | uint16_t vlan; | |
71 | uint16_t dp_ifidx; | |
72 | }; | |
73 | ||
064af421 | 74 | struct iface { |
0c6aea3f | 75 | /* These members are always valid. */ |
064af421 BP |
76 | struct port *port; /* Containing port. */ |
77 | size_t port_ifidx; /* Index within containing port. */ | |
064af421 | 78 | char *name; /* Host network device name. */ |
064af421 | 79 | tag_type tag; /* Tag associated with this interface. */ |
064af421 | 80 | long long delay_expires; /* Time after which 'enabled' may change. */ |
064af421 | 81 | |
0c6aea3f BP |
82 | /* These members are valid only after bridge_reconfigure() causes them to |
83 | * be initialized.*/ | |
84 | int dp_ifidx; /* Index within kernel datapath. */ | |
85 | struct netdev *netdev; /* Network device. */ | |
064af421 | 86 | bool enabled; /* May be chosen for flows? */ |
76343538 BP |
87 | |
88 | /* This member is only valid *during* bridge_reconfigure(). */ | |
89 | const struct ovsrec_interface *cfg; | |
064af421 BP |
90 | }; |
91 | ||
92 | #define BOND_MASK 0xff | |
93 | struct bond_entry { | |
94 | int iface_idx; /* Index of assigned iface, or -1 if none. */ | |
95 | uint64_t tx_bytes; /* Count of bytes recently transmitted. */ | |
96 | tag_type iface_tag; /* Tag associated with iface_idx. */ | |
97 | }; | |
98 | ||
99 | #define MAX_MIRRORS 32 | |
100 | typedef uint32_t mirror_mask_t; | |
101 | #define MIRROR_MASK_C(X) UINT32_C(X) | |
102 | BUILD_ASSERT_DECL(sizeof(mirror_mask_t) * CHAR_BIT >= MAX_MIRRORS); | |
103 | struct mirror { | |
104 | struct bridge *bridge; | |
105 | size_t idx; | |
106 | char *name; | |
107 | ||
108 | /* Selection criteria. */ | |
37e7f427 BP |
109 | struct shash src_ports; /* Name is port name; data is always NULL. */ |
110 | struct shash dst_ports; /* Name is port name; data is always NULL. */ | |
064af421 BP |
111 | int *vlans; |
112 | size_t n_vlans; | |
113 | ||
114 | /* Output. */ | |
115 | struct port *out_port; | |
116 | int out_vlan; | |
117 | }; | |
118 | ||
119 | #define FLOOD_PORT ((struct port *) 1) /* The 'flood' output port. */ | |
120 | struct port { | |
121 | struct bridge *bridge; | |
122 | size_t port_idx; | |
123 | int vlan; /* -1=trunk port, else a 12-bit VLAN ID. */ | |
124 | unsigned long *trunks; /* Bitmap of trunked VLANs, if 'vlan' == -1. */ | |
125 | char *name; | |
126 | ||
127 | /* An ordinary bridge port has 1 interface. | |
128 | * A bridge port for bonding has at least 2 interfaces. */ | |
129 | struct iface **ifaces; | |
130 | size_t n_ifaces, allocated_ifaces; | |
131 | ||
132 | /* Bonding info. */ | |
133 | struct bond_entry *bond_hash; /* An array of (BOND_MASK + 1) elements. */ | |
134 | int active_iface; /* Ifidx on which bcasts accepted, or -1. */ | |
135 | tag_type active_iface_tag; /* Tag for bcast flows. */ | |
136 | tag_type no_ifaces_tag; /* Tag for flows when all ifaces disabled. */ | |
137 | int updelay, downdelay; /* Delay before iface goes up/down, in ms. */ | |
85c74638 | 138 | bool bond_compat_is_stale; /* Need to call port_update_bond_compat()? */ |
76343538 | 139 | bool bond_fake_iface; /* Fake a bond interface for legacy compat? */ |
064af421 BP |
140 | |
141 | /* Port mirroring info. */ | |
142 | mirror_mask_t src_mirrors; /* Mirrors triggered when packet received. */ | |
143 | mirror_mask_t dst_mirrors; /* Mirrors triggered when packet sent. */ | |
144 | bool is_mirror_output_port; /* Does port mirroring send frames here? */ | |
76343538 BP |
145 | |
146 | /* This member is only valid *during* bridge_reconfigure(). */ | |
147 | const struct ovsrec_port *cfg; | |
064af421 BP |
148 | }; |
149 | ||
150 | #define DP_MAX_PORTS 255 | |
151 | struct bridge { | |
152 | struct list node; /* Node in global list of bridges. */ | |
153 | char *name; /* User-specified arbitrary name. */ | |
93dfc067 | 154 | struct mac_learning *ml; /* MAC learning table. */ |
064af421 BP |
155 | bool sent_config_request; /* Successfully sent config request? */ |
156 | uint8_t default_ea[ETH_ADDR_LEN]; /* Default MAC. */ | |
157 | ||
158 | /* Support for remote controllers. */ | |
159 | char *controller; /* NULL if there is no remote controller; | |
160 | * "discover" to do controller discovery; | |
161 | * otherwise a vconn name. */ | |
162 | ||
163 | /* OpenFlow switch processing. */ | |
164 | struct ofproto *ofproto; /* OpenFlow switch. */ | |
165 | ||
166 | /* Kernel datapath information. */ | |
c228a364 | 167 | struct dpif *dpif; /* Datapath. */ |
064af421 BP |
168 | struct port_array ifaces; /* Indexed by kernel datapath port number. */ |
169 | ||
170 | /* Bridge ports. */ | |
171 | struct port **ports; | |
172 | size_t n_ports, allocated_ports; | |
173 | ||
174 | /* Bonding. */ | |
175 | bool has_bonded_ports; | |
176 | long long int bond_next_rebalance; | |
177 | ||
178 | /* Flow tracking. */ | |
179 | bool flush; | |
180 | ||
181 | /* Flow statistics gathering. */ | |
182 | time_t next_stats_request; | |
183 | ||
184 | /* Port mirroring. */ | |
185 | struct mirror *mirrors[MAX_MIRRORS]; | |
76343538 BP |
186 | |
187 | /* This member is only valid *during* bridge_reconfigure(). */ | |
188 | const struct ovsrec_bridge *cfg; | |
064af421 BP |
189 | }; |
190 | ||
191 | /* List of all bridges. */ | |
192 | static struct list all_bridges = LIST_INITIALIZER(&all_bridges); | |
193 | ||
194 | /* Maximum number of datapaths. */ | |
195 | enum { DP_MAX = 256 }; | |
196 | ||
1a6f1e2a | 197 | static struct bridge *bridge_create(const struct ovsrec_bridge *br_cfg); |
064af421 BP |
198 | static void bridge_destroy(struct bridge *); |
199 | static struct bridge *bridge_lookup(const char *name); | |
8ca79daa | 200 | static unixctl_cb_func bridge_unixctl_dump_flows; |
064af421 | 201 | static int bridge_run_one(struct bridge *); |
d49d354b JP |
202 | static const struct ovsrec_controller *bridge_get_controller( |
203 | const struct ovsrec_open_vswitch *ovs_cfg, | |
204 | const struct bridge *br); | |
76343538 BP |
205 | static void bridge_reconfigure_one(const struct ovsrec_open_vswitch *, |
206 | struct bridge *); | |
207 | static void bridge_reconfigure_controller(const struct ovsrec_open_vswitch *, | |
208 | struct bridge *); | |
209 | static void bridge_get_all_ifaces(const struct bridge *, struct shash *ifaces); | |
064af421 BP |
210 | static void bridge_fetch_dp_ifaces(struct bridge *); |
211 | static void bridge_flush(struct bridge *); | |
212 | static void bridge_pick_local_hw_addr(struct bridge *, | |
213 | uint8_t ea[ETH_ADDR_LEN], | |
07c318f4 | 214 | struct iface **hw_addr_iface); |
064af421 BP |
215 | static uint64_t bridge_pick_datapath_id(struct bridge *, |
216 | const uint8_t bridge_ea[ETH_ADDR_LEN], | |
07c318f4 BP |
217 | struct iface *hw_addr_iface); |
218 | static struct iface *bridge_get_local_iface(struct bridge *); | |
064af421 BP |
219 | static uint64_t dpid_from_hash(const void *, size_t nbytes); |
220 | ||
8ca79daa | 221 | static unixctl_cb_func bridge_unixctl_fdb_show; |
8c4c1387 | 222 | |
da285df4 | 223 | static void bond_init(void); |
064af421 BP |
224 | static void bond_run(struct bridge *); |
225 | static void bond_wait(struct bridge *); | |
226 | static void bond_rebalance_port(struct port *); | |
2303f3b2 | 227 | static void bond_send_learning_packets(struct port *); |
8b2a2f4a | 228 | static void bond_enable_slave(struct iface *iface, bool enable); |
064af421 | 229 | |
76343538 BP |
230 | static struct port *port_create(struct bridge *, const char *name); |
231 | static void port_reconfigure(struct port *, const struct ovsrec_port *); | |
064af421 BP |
232 | static void port_destroy(struct port *); |
233 | static struct port *port_lookup(const struct bridge *, const char *name); | |
da285df4 | 234 | static struct iface *port_lookup_iface(const struct port *, const char *name); |
064af421 BP |
235 | static struct port *port_from_dp_ifidx(const struct bridge *, |
236 | uint16_t dp_ifidx); | |
237 | static void port_update_bond_compat(struct port *); | |
238 | static void port_update_vlan_compat(struct port *); | |
0c6aea3f | 239 | static void port_update_bonding(struct port *); |
064af421 | 240 | |
37e7f427 | 241 | static struct mirror *mirror_create(struct bridge *, const char *name); |
064af421 BP |
242 | static void mirror_destroy(struct mirror *); |
243 | static void mirror_reconfigure(struct bridge *); | |
37e7f427 | 244 | static void mirror_reconfigure_one(struct mirror *, struct ovsrec_mirror *); |
064af421 BP |
245 | static bool vlan_is_mirrored(const struct mirror *, int vlan); |
246 | ||
a740f0de JG |
247 | static struct iface *iface_create(struct port *port, |
248 | const struct ovsrec_interface *if_cfg); | |
064af421 BP |
249 | static void iface_destroy(struct iface *); |
250 | static struct iface *iface_lookup(const struct bridge *, const char *name); | |
251 | static struct iface *iface_from_dp_ifidx(const struct bridge *, | |
252 | uint16_t dp_ifidx); | |
557d8e6c | 253 | static bool iface_is_internal(const struct bridge *, const char *name); |
52df17e7 | 254 | static void iface_set_mac(struct iface *); |
064af421 BP |
255 | |
256 | /* Hooks into ofproto processing. */ | |
257 | static struct ofhooks bridge_ofhooks; | |
258 | \f | |
259 | /* Public functions. */ | |
260 | ||
261 | /* Adds the name of each interface used by a bridge, including local and | |
262 | * internal ports, to 'svec'. */ | |
263 | void | |
264 | bridge_get_ifaces(struct svec *svec) | |
265 | { | |
266 | struct bridge *br, *next; | |
267 | size_t i, j; | |
268 | ||
269 | LIST_FOR_EACH_SAFE (br, next, struct bridge, node, &all_bridges) { | |
270 | for (i = 0; i < br->n_ports; i++) { | |
271 | struct port *port = br->ports[i]; | |
272 | ||
273 | for (j = 0; j < port->n_ifaces; j++) { | |
274 | struct iface *iface = port->ifaces[j]; | |
275 | if (iface->dp_ifidx < 0) { | |
b29ba128 | 276 | VLOG_ERR("%s interface not in datapath %s, ignoring", |
c228a364 | 277 | iface->name, dpif_name(br->dpif)); |
064af421 BP |
278 | } else { |
279 | if (iface->dp_ifidx != ODPP_LOCAL) { | |
280 | svec_add(svec, iface->name); | |
281 | } | |
282 | } | |
283 | } | |
284 | } | |
285 | } | |
286 | } | |
287 | ||
064af421 | 288 | void |
76343538 | 289 | bridge_init(const struct ovsrec_open_vswitch *cfg) |
064af421 | 290 | { |
76343538 | 291 | struct svec bridge_names; |
1a6f1e2a | 292 | struct svec dpif_names, dpif_types; |
d3d22744 | 293 | size_t i; |
da285df4 | 294 | |
8ca79daa | 295 | unixctl_command_register("fdb/show", bridge_unixctl_fdb_show, NULL); |
8c4c1387 | 296 | |
76343538 BP |
297 | svec_init(&bridge_names); |
298 | for (i = 0; i < cfg->n_bridges; i++) { | |
299 | svec_add(&bridge_names, cfg->bridges[i]->name); | |
300 | } | |
301 | svec_sort(&bridge_names); | |
302 | ||
d2a34569 | 303 | svec_init(&dpif_names); |
1a6f1e2a JG |
304 | svec_init(&dpif_types); |
305 | dp_enumerate_types(&dpif_types); | |
306 | for (i = 0; i < dpif_types.n; i++) { | |
c228a364 | 307 | struct dpif *dpif; |
d3d22744 | 308 | int retval; |
1a6f1e2a | 309 | size_t j; |
064af421 | 310 | |
1a6f1e2a | 311 | dp_enumerate_names(dpif_types.names[i], &dpif_names); |
d3d22744 | 312 | |
1a6f1e2a JG |
313 | for (j = 0; j < dpif_names.n; j++) { |
314 | retval = dpif_open(dpif_names.names[j], dpif_types.names[i], &dpif); | |
315 | if (!retval) { | |
316 | struct svec all_names; | |
317 | size_t k; | |
318 | ||
319 | svec_init(&all_names); | |
320 | dpif_get_all_names(dpif, &all_names); | |
321 | for (k = 0; k < all_names.n; k++) { | |
322 | if (svec_contains(&bridge_names, all_names.names[k])) { | |
323 | goto found; | |
324 | } | |
d3d22744 | 325 | } |
1a6f1e2a JG |
326 | dpif_delete(dpif); |
327 | found: | |
328 | svec_destroy(&all_names); | |
329 | dpif_close(dpif); | |
064af421 | 330 | } |
064af421 BP |
331 | } |
332 | } | |
d0c9d304 | 333 | svec_destroy(&dpif_names); |
1a6f1e2a | 334 | svec_destroy(&dpif_types); |
064af421 | 335 | |
8ca79daa BP |
336 | unixctl_command_register("bridge/dump-flows", bridge_unixctl_dump_flows, |
337 | NULL); | |
4f2cad2c | 338 | |
d3d22744 | 339 | bond_init(); |
76343538 | 340 | bridge_reconfigure(cfg); |
064af421 BP |
341 | } |
342 | ||
343 | #ifdef HAVE_OPENSSL | |
344 | static bool | |
76343538 | 345 | config_string_change(const char *value, char **valuep) |
064af421 | 346 | { |
064af421 BP |
347 | if (value && (!*valuep || strcmp(value, *valuep))) { |
348 | free(*valuep); | |
349 | *valuep = xstrdup(value); | |
350 | return true; | |
351 | } else { | |
352 | return false; | |
353 | } | |
354 | } | |
355 | ||
356 | static void | |
76343538 | 357 | bridge_configure_ssl(const struct ovsrec_ssl *ssl) |
064af421 BP |
358 | { |
359 | /* XXX SSL should be configurable on a per-bridge basis. | |
360 | * XXX should be possible to de-configure SSL. */ | |
361 | static char *private_key_file; | |
362 | static char *certificate_file; | |
363 | static char *cacert_file; | |
7e40e21d | 364 | struct stat s; |
064af421 | 365 | |
76343538 BP |
366 | if (!ssl) { |
367 | /* XXX We can't un-set SSL settings. */ | |
368 | return; | |
369 | } | |
370 | ||
371 | if (config_string_change(ssl->private_key, &private_key_file)) { | |
fe55ad15 | 372 | stream_ssl_set_private_key_file(private_key_file); |
064af421 BP |
373 | } |
374 | ||
76343538 | 375 | if (config_string_change(ssl->certificate, &certificate_file)) { |
fe55ad15 | 376 | stream_ssl_set_certificate_file(certificate_file); |
064af421 BP |
377 | } |
378 | ||
7e40e21d JP |
379 | /* We assume that even if the filename hasn't changed, if the CA cert |
380 | * file has been removed, that we want to move back into | |
381 | * boot-strapping mode. This opens a small security hole, because | |
382 | * the old certificate will still be trusted until vSwitch is | |
383 | * restarted. We may want to address this in vconn's SSL library. */ | |
76343538 | 384 | if (config_string_change(ssl->ca_cert, &cacert_file) |
de2047c5 | 385 | || (cacert_file && stat(cacert_file, &s) && errno == ENOENT)) { |
fe55ad15 | 386 | stream_ssl_set_ca_cert_file(cacert_file, ssl->bootstrap_ca_cert); |
064af421 BP |
387 | } |
388 | } | |
389 | #endif | |
390 | ||
6c88d577 JP |
391 | /* Attempt to create the network device 'iface_name' through the netdev |
392 | * library. */ | |
393 | static int | |
149f577a JG |
394 | set_up_iface(const struct ovsrec_interface *iface_cfg, struct iface *iface, |
395 | bool create) | |
6c88d577 | 396 | { |
76343538 BP |
397 | struct shash_node *node; |
398 | struct shash options; | |
149f577a | 399 | int error = 0; |
6c88d577 JP |
400 | size_t i; |
401 | ||
76343538 BP |
402 | shash_init(&options); |
403 | for (i = 0; i < iface_cfg->n_options; i++) { | |
404 | shash_add(&options, iface_cfg->key_options[i], | |
405 | xstrdup(iface_cfg->value_options[i])); | |
6c88d577 JP |
406 | } |
407 | ||
408 | if (create) { | |
149f577a JG |
409 | struct netdev_options netdev_options; |
410 | ||
411 | memset(&netdev_options, 0, sizeof netdev_options); | |
412 | netdev_options.name = iface_cfg->name; | |
413 | netdev_options.type = iface_cfg->type; | |
414 | netdev_options.args = &options; | |
415 | netdev_options.ethertype = NETDEV_ETH_TYPE_NONE; | |
416 | netdev_options.may_create = true; | |
417 | if (iface_is_internal(iface->port->bridge, iface_cfg->name)) { | |
418 | netdev_options.may_open = true; | |
419 | } | |
420 | ||
421 | error = netdev_open(&netdev_options, &iface->netdev); | |
422 | ||
423 | if (iface->netdev) { | |
424 | netdev_get_carrier(iface->netdev, &iface->enabled); | |
425 | } | |
426 | } else if (iface->netdev) { | |
427 | const char *netdev_type = netdev_get_type(iface->netdev); | |
428 | const char *iface_type = iface_cfg->type && strlen(iface_cfg->type) | |
429 | ? iface_cfg->type : NULL; | |
430 | ||
431 | if (!iface_type || !strcmp(netdev_type, iface_type)) { | |
432 | error = netdev_reconfigure(iface->netdev, &options); | |
433 | } else { | |
434 | VLOG_WARN("%s: attempting change device type from %s to %s", | |
435 | iface_cfg->name, netdev_type, iface_type); | |
436 | error = EINVAL; | |
437 | } | |
6c88d577 JP |
438 | } |
439 | ||
76343538 BP |
440 | SHASH_FOR_EACH (node, &options) { |
441 | free(node->data); | |
442 | } | |
443 | shash_destroy(&options); | |
6c88d577 JP |
444 | |
445 | return error; | |
446 | } | |
447 | ||
6c88d577 | 448 | static int |
149f577a | 449 | reconfigure_iface(const struct ovsrec_interface *iface_cfg, struct iface *iface) |
6c88d577 | 450 | { |
149f577a | 451 | return set_up_iface(iface_cfg, iface, false); |
6c88d577 JP |
452 | } |
453 | ||
0c6aea3f | 454 | static bool |
149f577a JG |
455 | check_iface_netdev(struct bridge *br UNUSED, struct iface *iface, |
456 | void *aux UNUSED) | |
0c6aea3f | 457 | { |
149f577a JG |
458 | if (!iface->netdev) { |
459 | int error = set_up_iface(iface->cfg, iface, true); | |
460 | if (error) { | |
461 | VLOG_WARN("could not open netdev on %s, dropping: %s", iface->name, | |
462 | strerror(error)); | |
463 | return false; | |
464 | } | |
0c6aea3f | 465 | } |
149f577a JG |
466 | |
467 | return true; | |
0c6aea3f BP |
468 | } |
469 | ||
6ae39834 | 470 | static bool |
07c318f4 | 471 | check_iface_dp_ifidx(struct bridge *br, struct iface *iface, void *aux UNUSED) |
6ae39834 | 472 | { |
6ae39834 | 473 | if (iface->dp_ifidx >= 0) { |
6ae39834 BP |
474 | VLOG_DBG("%s has interface %s on port %d", |
475 | dpif_name(br->dpif), | |
476 | iface->name, iface->dp_ifidx); | |
477 | return true; | |
478 | } else { | |
479 | VLOG_ERR("%s interface not in %s, dropping", | |
480 | iface->name, dpif_name(br->dpif)); | |
481 | return false; | |
482 | } | |
483 | } | |
484 | ||
795fe1fb | 485 | static bool |
4d678233 | 486 | set_iface_properties(struct bridge *br UNUSED, struct iface *iface, |
795fe1fb BP |
487 | void *aux UNUSED) |
488 | { | |
4d678233 | 489 | /* Set policing attributes. */ |
76343538 BP |
490 | netdev_set_policing(iface->netdev, |
491 | iface->cfg->ingress_policing_rate, | |
492 | iface->cfg->ingress_policing_burst); | |
4d678233 BP |
493 | |
494 | /* Set MAC address of internal interfaces other than the local | |
495 | * interface. */ | |
496 | if (iface->dp_ifidx != ODPP_LOCAL | |
497 | && iface_is_internal(br, iface->name)) { | |
498 | iface_set_mac(iface); | |
499 | } | |
500 | ||
795fe1fb BP |
501 | return true; |
502 | } | |
503 | ||
6ae39834 BP |
504 | /* Calls 'cb' for each interfaces in 'br', passing along the 'aux' argument. |
505 | * Deletes from 'br' all the interfaces for which 'cb' returns false, and then | |
506 | * deletes from 'br' any ports that no longer have any interfaces. */ | |
507 | static void | |
508 | iterate_and_prune_ifaces(struct bridge *br, | |
509 | bool (*cb)(struct bridge *, struct iface *, | |
510 | void *aux), | |
511 | void *aux) | |
512 | { | |
513 | size_t i, j; | |
514 | ||
515 | for (i = 0; i < br->n_ports; ) { | |
516 | struct port *port = br->ports[i]; | |
517 | for (j = 0; j < port->n_ifaces; ) { | |
518 | struct iface *iface = port->ifaces[j]; | |
519 | if (cb(br, iface, aux)) { | |
520 | j++; | |
521 | } else { | |
522 | iface_destroy(iface); | |
523 | } | |
524 | } | |
525 | ||
526 | if (port->n_ifaces) { | |
527 | i++; | |
528 | } else { | |
529 | VLOG_ERR("%s port has no interfaces, dropping", port->name); | |
530 | port_destroy(port); | |
531 | } | |
532 | } | |
533 | } | |
534 | ||
064af421 | 535 | void |
76343538 | 536 | bridge_reconfigure(const struct ovsrec_open_vswitch *ovs_cfg) |
064af421 | 537 | { |
093e47f4 | 538 | struct ovsdb_idl_txn *txn; |
76343538 BP |
539 | struct shash old_br, new_br; |
540 | struct shash_node *node; | |
064af421 | 541 | struct bridge *br, *next; |
6ae39834 | 542 | size_t i; |
72b06300 | 543 | int sflow_bridge_number; |
064af421 BP |
544 | |
545 | COVERAGE_INC(bridge_reconfigure); | |
546 | ||
093e47f4 BP |
547 | txn = ovsdb_idl_txn_create(ovs_cfg->header_.table->idl); |
548 | ||
632d136c | 549 | /* Collect old and new bridges. */ |
76343538 BP |
550 | shash_init(&old_br); |
551 | shash_init(&new_br); | |
064af421 | 552 | LIST_FOR_EACH (br, struct bridge, node, &all_bridges) { |
76343538 BP |
553 | shash_add(&old_br, br->name, br); |
554 | } | |
555 | for (i = 0; i < ovs_cfg->n_bridges; i++) { | |
556 | const struct ovsrec_bridge *br_cfg = ovs_cfg->bridges[i]; | |
557 | if (!shash_add_once(&new_br, br_cfg->name, br_cfg)) { | |
558 | VLOG_WARN("more than one bridge named %s", br_cfg->name); | |
559 | } | |
064af421 | 560 | } |
064af421 BP |
561 | |
562 | /* Get rid of deleted bridges and add new bridges. */ | |
064af421 | 563 | LIST_FOR_EACH_SAFE (br, next, struct bridge, node, &all_bridges) { |
76343538 BP |
564 | struct ovsrec_bridge *br_cfg = shash_find_data(&new_br, br->name); |
565 | if (br_cfg) { | |
566 | br->cfg = br_cfg; | |
567 | } else { | |
064af421 BP |
568 | bridge_destroy(br); |
569 | } | |
570 | } | |
76343538 BP |
571 | SHASH_FOR_EACH (node, &new_br) { |
572 | const char *br_name = node->name; | |
573 | const struct ovsrec_bridge *br_cfg = node->data; | |
1a6f1e2a JG |
574 | br = shash_find_data(&old_br, br_name); |
575 | if (br) { | |
576 | /* If the bridge datapath type has changed, we need to tear it | |
577 | * down and recreate. */ | |
578 | if (strcmp(br->cfg->datapath_type, br_cfg->datapath_type)) { | |
579 | bridge_destroy(br); | |
580 | bridge_create(br_cfg); | |
fa33d64a | 581 | } |
1a6f1e2a JG |
582 | } else { |
583 | bridge_create(br_cfg); | |
064af421 BP |
584 | } |
585 | } | |
76343538 BP |
586 | shash_destroy(&old_br); |
587 | shash_destroy(&new_br); | |
064af421 BP |
588 | |
589 | #ifdef HAVE_OPENSSL | |
590 | /* Configure SSL. */ | |
76343538 | 591 | bridge_configure_ssl(ovs_cfg->ssl); |
064af421 BP |
592 | #endif |
593 | ||
594 | /* Reconfigure all bridges. */ | |
595 | LIST_FOR_EACH (br, struct bridge, node, &all_bridges) { | |
76343538 | 596 | bridge_reconfigure_one(ovs_cfg, br); |
064af421 BP |
597 | } |
598 | ||
599 | /* Add and delete ports on all datapaths. | |
600 | * | |
601 | * The kernel will reject any attempt to add a given port to a datapath if | |
602 | * that port already belongs to a different datapath, so we must do all | |
603 | * port deletions before any port additions. */ | |
604 | LIST_FOR_EACH (br, struct bridge, node, &all_bridges) { | |
605 | struct odp_port *dpif_ports; | |
606 | size_t n_dpif_ports; | |
76343538 | 607 | struct shash want_ifaces; |
064af421 | 608 | |
c228a364 | 609 | dpif_port_list(br->dpif, &dpif_ports, &n_dpif_ports); |
064af421 BP |
610 | bridge_get_all_ifaces(br, &want_ifaces); |
611 | for (i = 0; i < n_dpif_ports; i++) { | |
612 | const struct odp_port *p = &dpif_ports[i]; | |
76343538 | 613 | if (!shash_find(&want_ifaces, p->devname) |
064af421 | 614 | && strcmp(p->devname, br->name)) { |
c228a364 | 615 | int retval = dpif_port_del(br->dpif, p->port); |
064af421 | 616 | if (retval) { |
b29ba128 | 617 | VLOG_ERR("failed to remove %s interface from %s: %s", |
c228a364 | 618 | p->devname, dpif_name(br->dpif), |
b29ba128 | 619 | strerror(retval)); |
064af421 BP |
620 | } |
621 | } | |
622 | } | |
76343538 | 623 | shash_destroy(&want_ifaces); |
064af421 BP |
624 | free(dpif_ports); |
625 | } | |
626 | LIST_FOR_EACH (br, struct bridge, node, &all_bridges) { | |
627 | struct odp_port *dpif_ports; | |
628 | size_t n_dpif_ports; | |
76343538 BP |
629 | struct shash cur_ifaces, want_ifaces; |
630 | struct shash_node *node; | |
064af421 | 631 | |
76343538 | 632 | /* Get the set of interfaces currently in this datapath. */ |
c228a364 | 633 | dpif_port_list(br->dpif, &dpif_ports, &n_dpif_ports); |
76343538 | 634 | shash_init(&cur_ifaces); |
064af421 | 635 | for (i = 0; i < n_dpif_ports; i++) { |
76343538 BP |
636 | const char *name = dpif_ports[i].devname; |
637 | if (!shash_find(&cur_ifaces, name)) { | |
638 | shash_add(&cur_ifaces, name, NULL); | |
639 | } | |
064af421 BP |
640 | } |
641 | free(dpif_ports); | |
064af421 | 642 | |
76343538 BP |
643 | /* Get the set of interfaces we want on this datapath. */ |
644 | bridge_get_all_ifaces(br, &want_ifaces); | |
6c88d577 | 645 | |
76343538 BP |
646 | SHASH_FOR_EACH (node, &want_ifaces) { |
647 | const char *if_name = node->name; | |
648 | struct iface *iface = node->data; | |
35c979bf | 649 | |
76343538 BP |
650 | if (shash_find(&cur_ifaces, if_name)) { |
651 | /* Already exists, just reconfigure it. */ | |
652 | if (iface) { | |
149f577a | 653 | reconfigure_iface(iface->cfg, iface); |
76343538 BP |
654 | } |
655 | } else { | |
656 | /* Need to add to datapath. */ | |
657 | bool internal; | |
658 | int error; | |
659 | ||
76343538 | 660 | /* Add to datapath. */ |
a740f0de | 661 | internal = iface_is_internal(br, if_name); |
76343538 BP |
662 | error = dpif_port_add(br->dpif, if_name, |
663 | internal ? ODP_PORT_INTERNAL : 0, NULL); | |
664 | if (error == EFBIG) { | |
665 | VLOG_ERR("ran out of valid port numbers on %s", | |
666 | dpif_name(br->dpif)); | |
667 | break; | |
668 | } else if (error) { | |
669 | VLOG_ERR("failed to add %s interface to %s: %s", | |
670 | if_name, dpif_name(br->dpif), strerror(error)); | |
671 | } | |
064af421 BP |
672 | } |
673 | } | |
76343538 BP |
674 | shash_destroy(&cur_ifaces); |
675 | shash_destroy(&want_ifaces); | |
064af421 | 676 | } |
72b06300 | 677 | sflow_bridge_number = 0; |
064af421 BP |
678 | LIST_FOR_EACH (br, struct bridge, node, &all_bridges) { |
679 | uint8_t ea[8]; | |
680 | uint64_t dpid; | |
07c318f4 BP |
681 | struct iface *local_iface; |
682 | struct iface *hw_addr_iface; | |
093e47f4 | 683 | char *dpid_string; |
064af421 | 684 | |
064af421 | 685 | bridge_fetch_dp_ifaces(br); |
064af421 | 686 | |
149f577a | 687 | iterate_and_prune_ifaces(br, check_iface_netdev, NULL); |
07c318f4 | 688 | iterate_and_prune_ifaces(br, check_iface_dp_ifidx, NULL); |
064af421 BP |
689 | |
690 | /* Pick local port hardware address, datapath ID. */ | |
07c318f4 BP |
691 | bridge_pick_local_hw_addr(br, ea, &hw_addr_iface); |
692 | local_iface = bridge_get_local_iface(br); | |
064af421 | 693 | if (local_iface) { |
07c318f4 | 694 | int error = netdev_set_etheraddr(local_iface->netdev, ea); |
064af421 BP |
695 | if (error) { |
696 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
697 | VLOG_ERR_RL(&rl, "bridge %s: failed to set bridge " | |
698 | "Ethernet address: %s", | |
699 | br->name, strerror(error)); | |
700 | } | |
701 | } | |
702 | ||
07c318f4 | 703 | dpid = bridge_pick_datapath_id(br, ea, hw_addr_iface); |
064af421 BP |
704 | ofproto_set_datapath_id(br->ofproto, dpid); |
705 | ||
093e47f4 BP |
706 | dpid_string = xasprintf("%012"PRIx64, dpid); |
707 | ovsrec_bridge_set_datapath_id(br->cfg, dpid_string); | |
708 | free(dpid_string); | |
709 | ||
064af421 | 710 | /* Set NetFlow configuration on this bridge. */ |
76343538 BP |
711 | if (br->cfg->netflow) { |
712 | struct ovsrec_netflow *nf_cfg = br->cfg->netflow; | |
713 | struct netflow_options opts; | |
714 | ||
715 | memset(&opts, 0, sizeof opts); | |
716 | ||
717 | dpif_get_netflow_ids(br->dpif, &opts.engine_type, &opts.engine_id); | |
718 | if (nf_cfg->engine_type) { | |
cd746526 | 719 | opts.engine_type = *nf_cfg->engine_type; |
76343538 BP |
720 | } |
721 | if (nf_cfg->engine_id) { | |
cd746526 | 722 | opts.engine_id = *nf_cfg->engine_id; |
76343538 BP |
723 | } |
724 | ||
725 | opts.active_timeout = nf_cfg->active_timeout; | |
726 | if (!opts.active_timeout) { | |
727 | opts.active_timeout = -1; | |
728 | } else if (opts.active_timeout < 0) { | |
e9e2856e JG |
729 | VLOG_WARN("bridge %s: active timeout interval set to negative " |
730 | "value, using default instead (%d seconds)", br->name, | |
731 | NF_ACTIVE_TIMEOUT_DEFAULT); | |
732 | opts.active_timeout = -1; | |
76343538 BP |
733 | } |
734 | ||
735 | opts.add_id_to_iface = nf_cfg->add_id_to_interface; | |
736 | if (opts.add_id_to_iface) { | |
737 | if (opts.engine_id > 0x7f) { | |
738 | VLOG_WARN("bridge %s: netflow port mangling may conflict " | |
739 | "with another vswitch, choose an engine id less " | |
740 | "than 128", br->name); | |
741 | } | |
742 | if (br->n_ports > 508) { | |
743 | VLOG_WARN("bridge %s: netflow port mangling will conflict " | |
744 | "with another port when more than 508 ports are " | |
745 | "used", br->name); | |
746 | } | |
747 | } | |
748 | ||
749 | opts.collectors.n = nf_cfg->n_targets; | |
750 | opts.collectors.names = nf_cfg->targets; | |
751 | if (ofproto_set_netflow(br->ofproto, &opts)) { | |
752 | VLOG_ERR("bridge %s: problem setting netflow collectors", | |
753 | br->name); | |
754 | } | |
755 | } else { | |
756 | ofproto_set_netflow(br->ofproto, NULL); | |
757 | } | |
064af421 | 758 | |
a4af0040 JP |
759 | /* Set sFlow configuration on this bridge. */ |
760 | if (br->cfg->sflow) { | |
d49d354b JP |
761 | const struct ovsrec_sflow *sflow_cfg = br->cfg->sflow; |
762 | const struct ovsrec_controller *ctrl; | |
72b06300 BP |
763 | struct ofproto_sflow_options oso; |
764 | ||
a4af0040 JP |
765 | memset(&oso, 0, sizeof oso); |
766 | ||
767 | oso.targets.n = sflow_cfg->n_targets; | |
768 | oso.targets.names = sflow_cfg->targets; | |
72b06300 BP |
769 | |
770 | oso.sampling_rate = SFL_DEFAULT_SAMPLING_RATE; | |
a4af0040 JP |
771 | if (sflow_cfg->sampling) { |
772 | oso.sampling_rate = *sflow_cfg->sampling; | |
72b06300 BP |
773 | } |
774 | ||
775 | oso.polling_interval = SFL_DEFAULT_POLLING_INTERVAL; | |
a4af0040 JP |
776 | if (sflow_cfg->polling) { |
777 | oso.polling_interval = *sflow_cfg->polling; | |
72b06300 BP |
778 | } |
779 | ||
780 | oso.header_len = SFL_DEFAULT_HEADER_SIZE; | |
a4af0040 JP |
781 | if (sflow_cfg->header) { |
782 | oso.header_len = *sflow_cfg->header; | |
72b06300 BP |
783 | } |
784 | ||
785 | oso.sub_id = sflow_bridge_number++; | |
a4af0040 JP |
786 | oso.agent_device = sflow_cfg->agent; |
787 | ||
a4af0040 JP |
788 | ctrl = bridge_get_controller(ovs_cfg, br); |
789 | oso.control_ip = ctrl ? ctrl->local_ip : NULL; | |
72b06300 BP |
790 | ofproto_set_sflow(br->ofproto, &oso); |
791 | ||
792 | svec_destroy(&oso.targets); | |
793 | } else { | |
794 | ofproto_set_sflow(br->ofproto, NULL); | |
795 | } | |
796 | ||
064af421 BP |
797 | /* Update the controller and related settings. It would be more |
798 | * straightforward to call this from bridge_reconfigure_one(), but we | |
799 | * can't do it there for two reasons. First, and most importantly, at | |
800 | * that point we don't know the dp_ifidx of any interfaces that have | |
801 | * been added to the bridge (because we haven't actually added them to | |
802 | * the datapath). Second, at that point we haven't set the datapath ID | |
803 | * yet; when a controller is configured, resetting the datapath ID will | |
804 | * immediately disconnect from the controller, so it's better to set | |
805 | * the datapath ID before the controller. */ | |
76343538 | 806 | bridge_reconfigure_controller(ovs_cfg, br); |
064af421 BP |
807 | } |
808 | LIST_FOR_EACH (br, struct bridge, node, &all_bridges) { | |
809 | for (i = 0; i < br->n_ports; i++) { | |
810 | struct port *port = br->ports[i]; | |
52df17e7 | 811 | |
064af421 | 812 | port_update_vlan_compat(port); |
0c6aea3f | 813 | port_update_bonding(port); |
064af421 BP |
814 | } |
815 | } | |
816 | LIST_FOR_EACH (br, struct bridge, node, &all_bridges) { | |
4d678233 | 817 | iterate_and_prune_ifaces(br, set_iface_properties, NULL); |
064af421 | 818 | } |
093e47f4 | 819 | |
b54e22e9 BP |
820 | ovsrec_open_vswitch_set_cur_cfg(ovs_cfg, ovs_cfg->next_cfg); |
821 | ||
093e47f4 BP |
822 | ovsdb_idl_txn_commit(txn); |
823 | ovsdb_idl_txn_destroy(txn); /* XXX */ | |
824 | } | |
825 | ||
826 | static const char * | |
827 | bridge_get_other_config(const struct ovsrec_bridge *br_cfg, const char *key) | |
828 | { | |
829 | size_t i; | |
830 | ||
831 | for (i = 0; i < br_cfg->n_other_config; i++) { | |
832 | if (!strcmp(br_cfg->key_other_config[i], key)) { | |
833 | return br_cfg->value_other_config[i]; | |
834 | } | |
835 | } | |
836 | return NULL; | |
064af421 BP |
837 | } |
838 | ||
839 | static void | |
840 | bridge_pick_local_hw_addr(struct bridge *br, uint8_t ea[ETH_ADDR_LEN], | |
07c318f4 | 841 | struct iface **hw_addr_iface) |
064af421 | 842 | { |
093e47f4 | 843 | const char *hwaddr; |
064af421 BP |
844 | size_t i, j; |
845 | int error; | |
846 | ||
07c318f4 | 847 | *hw_addr_iface = NULL; |
064af421 BP |
848 | |
849 | /* Did the user request a particular MAC? */ | |
093e47f4 BP |
850 | hwaddr = bridge_get_other_config(br->cfg, "hwaddr"); |
851 | if (hwaddr && eth_addr_from_string(hwaddr, ea)) { | |
064af421 BP |
852 | if (eth_addr_is_multicast(ea)) { |
853 | VLOG_ERR("bridge %s: cannot set MAC address to multicast " | |
854 | "address "ETH_ADDR_FMT, br->name, ETH_ADDR_ARGS(ea)); | |
855 | } else if (eth_addr_is_zero(ea)) { | |
856 | VLOG_ERR("bridge %s: cannot set MAC address to zero", br->name); | |
857 | } else { | |
858 | return; | |
859 | } | |
860 | } | |
861 | ||
141f4942 BP |
862 | /* Otherwise choose the minimum non-local MAC address among all of the |
863 | * interfaces. */ | |
064af421 BP |
864 | memset(ea, 0xff, sizeof ea); |
865 | for (i = 0; i < br->n_ports; i++) { | |
866 | struct port *port = br->ports[i]; | |
58b7527e | 867 | uint8_t iface_ea[ETH_ADDR_LEN]; |
58b7527e BP |
868 | struct iface *iface; |
869 | ||
870 | /* Mirror output ports don't participate. */ | |
064af421 BP |
871 | if (port->is_mirror_output_port) { |
872 | continue; | |
873 | } | |
58b7527e BP |
874 | |
875 | /* Choose the MAC address to represent the port. */ | |
76343538 | 876 | if (port->cfg->mac && eth_addr_from_string(port->cfg->mac, iface_ea)) { |
ba09980a BP |
877 | /* Find the interface with this Ethernet address (if any) so that |
878 | * we can provide the correct devname to the caller. */ | |
879 | iface = NULL; | |
880 | for (j = 0; j < port->n_ifaces; j++) { | |
881 | struct iface *candidate = port->ifaces[j]; | |
882 | uint8_t candidate_ea[ETH_ADDR_LEN]; | |
8fef8c71 | 883 | if (!netdev_get_etheraddr(candidate->netdev, candidate_ea) |
ba09980a BP |
884 | && eth_addr_equals(iface_ea, candidate_ea)) { |
885 | iface = candidate; | |
886 | } | |
887 | } | |
58b7527e BP |
888 | } else { |
889 | /* Choose the interface whose MAC address will represent the port. | |
890 | * The Linux kernel bonding code always chooses the MAC address of | |
891 | * the first slave added to a bond, and the Fedora networking | |
892 | * scripts always add slaves to a bond in alphabetical order, so | |
893 | * for compatibility we choose the interface with the name that is | |
894 | * first in alphabetical order. */ | |
895 | iface = port->ifaces[0]; | |
896 | for (j = 1; j < port->n_ifaces; j++) { | |
897 | struct iface *candidate = port->ifaces[j]; | |
898 | if (strcmp(candidate->name, iface->name) < 0) { | |
899 | iface = candidate; | |
900 | } | |
901 | } | |
902 | ||
903 | /* The local port doesn't count (since we're trying to choose its | |
141f4942 BP |
904 | * MAC address anyway). */ |
905 | if (iface->dp_ifidx == ODPP_LOCAL) { | |
064af421 BP |
906 | continue; |
907 | } | |
58b7527e BP |
908 | |
909 | /* Grab MAC. */ | |
07c318f4 | 910 | error = netdev_get_etheraddr(iface->netdev, iface_ea); |
58b7527e | 911 | if (error) { |
064af421 BP |
912 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
913 | VLOG_ERR_RL(&rl, "failed to obtain Ethernet address of %s: %s", | |
914 | iface->name, strerror(error)); | |
58b7527e | 915 | continue; |
064af421 BP |
916 | } |
917 | } | |
58b7527e BP |
918 | |
919 | /* Compare against our current choice. */ | |
920 | if (!eth_addr_is_multicast(iface_ea) && | |
141f4942 | 921 | !eth_addr_is_local(iface_ea) && |
58b7527e BP |
922 | !eth_addr_is_reserved(iface_ea) && |
923 | !eth_addr_is_zero(iface_ea) && | |
924 | memcmp(iface_ea, ea, ETH_ADDR_LEN) < 0) | |
925 | { | |
0babc06f | 926 | memcpy(ea, iface_ea, ETH_ADDR_LEN); |
8fef8c71 | 927 | *hw_addr_iface = iface; |
58b7527e | 928 | } |
064af421 | 929 | } |
141f4942 | 930 | if (eth_addr_is_multicast(ea)) { |
064af421 | 931 | memcpy(ea, br->default_ea, ETH_ADDR_LEN); |
07c318f4 | 932 | *hw_addr_iface = NULL; |
064af421 BP |
933 | VLOG_WARN("bridge %s: using default bridge Ethernet " |
934 | "address "ETH_ADDR_FMT, br->name, ETH_ADDR_ARGS(ea)); | |
935 | } else { | |
936 | VLOG_DBG("bridge %s: using bridge Ethernet address "ETH_ADDR_FMT, | |
937 | br->name, ETH_ADDR_ARGS(ea)); | |
938 | } | |
939 | } | |
940 | ||
941 | /* Choose and returns the datapath ID for bridge 'br' given that the bridge | |
942 | * Ethernet address is 'bridge_ea'. If 'bridge_ea' is the Ethernet address of | |
07c318f4 BP |
943 | * an interface on 'br', then that interface must be passed in as |
944 | * 'hw_addr_iface'; if 'bridge_ea' was derived some other way, then | |
945 | * 'hw_addr_iface' must be passed in as a null pointer. */ | |
064af421 BP |
946 | static uint64_t |
947 | bridge_pick_datapath_id(struct bridge *br, | |
948 | const uint8_t bridge_ea[ETH_ADDR_LEN], | |
07c318f4 | 949 | struct iface *hw_addr_iface) |
064af421 BP |
950 | { |
951 | /* | |
952 | * The procedure for choosing a bridge MAC address will, in the most | |
953 | * ordinary case, also choose a unique MAC that we can use as a datapath | |
954 | * ID. In some special cases, though, multiple bridges will end up with | |
955 | * the same MAC address. This is OK for the bridges, but it will confuse | |
956 | * the OpenFlow controller, because each datapath needs a unique datapath | |
957 | * ID. | |
958 | * | |
959 | * Datapath IDs must be unique. It is also very desirable that they be | |
960 | * stable from one run to the next, so that policy set on a datapath | |
961 | * "sticks". | |
962 | */ | |
093e47f4 | 963 | const char *datapath_id; |
064af421 BP |
964 | uint64_t dpid; |
965 | ||
093e47f4 BP |
966 | datapath_id = bridge_get_other_config(br->cfg, "datapath-id"); |
967 | if (datapath_id && dpid_from_string(datapath_id, &dpid)) { | |
064af421 BP |
968 | return dpid; |
969 | } | |
970 | ||
07c318f4 | 971 | if (hw_addr_iface) { |
064af421 | 972 | int vlan; |
b2f17b15 | 973 | if (!netdev_get_vlan_vid(hw_addr_iface->netdev, &vlan)) { |
064af421 BP |
974 | /* |
975 | * A bridge whose MAC address is taken from a VLAN network device | |
976 | * (that is, a network device created with vconfig(8) or similar | |
977 | * tool) will have the same MAC address as a bridge on the VLAN | |
978 | * device's physical network device. | |
979 | * | |
980 | * Handle this case by hashing the physical network device MAC | |
981 | * along with the VLAN identifier. | |
982 | */ | |
983 | uint8_t buf[ETH_ADDR_LEN + 2]; | |
984 | memcpy(buf, bridge_ea, ETH_ADDR_LEN); | |
985 | buf[ETH_ADDR_LEN] = vlan >> 8; | |
986 | buf[ETH_ADDR_LEN + 1] = vlan; | |
987 | return dpid_from_hash(buf, sizeof buf); | |
988 | } else { | |
989 | /* | |
990 | * Assume that this bridge's MAC address is unique, since it | |
991 | * doesn't fit any of the cases we handle specially. | |
992 | */ | |
993 | } | |
994 | } else { | |
995 | /* | |
996 | * A purely internal bridge, that is, one that has no non-virtual | |
997 | * network devices on it at all, is more difficult because it has no | |
998 | * natural unique identifier at all. | |
999 | * | |
1000 | * When the host is a XenServer, we handle this case by hashing the | |
1001 | * host's UUID with the name of the bridge. Names of bridges are | |
1002 | * persistent across XenServer reboots, although they can be reused if | |
1003 | * an internal network is destroyed and then a new one is later | |
1004 | * created, so this is fairly effective. | |
1005 | * | |
1006 | * When the host is not a XenServer, we punt by using a random MAC | |
1007 | * address on each run. | |
1008 | */ | |
1009 | const char *host_uuid = xenserver_get_host_uuid(); | |
1010 | if (host_uuid) { | |
1011 | char *combined = xasprintf("%s,%s", host_uuid, br->name); | |
1012 | dpid = dpid_from_hash(combined, strlen(combined)); | |
1013 | free(combined); | |
1014 | return dpid; | |
1015 | } | |
1016 | } | |
1017 | ||
1018 | return eth_addr_to_uint64(bridge_ea); | |
1019 | } | |
1020 | ||
1021 | static uint64_t | |
1022 | dpid_from_hash(const void *data, size_t n) | |
1023 | { | |
5eccf359 | 1024 | uint8_t hash[SHA1_DIGEST_SIZE]; |
064af421 BP |
1025 | |
1026 | BUILD_ASSERT_DECL(sizeof hash >= ETH_ADDR_LEN); | |
5eccf359 | 1027 | sha1_bytes(data, n, hash); |
064af421 BP |
1028 | eth_addr_mark_random(hash); |
1029 | return eth_addr_to_uint64(hash); | |
1030 | } | |
1031 | ||
1032 | int | |
1033 | bridge_run(void) | |
1034 | { | |
1035 | struct bridge *br, *next; | |
1036 | int retval; | |
1037 | ||
1038 | retval = 0; | |
1039 | LIST_FOR_EACH_SAFE (br, next, struct bridge, node, &all_bridges) { | |
1040 | int error = bridge_run_one(br); | |
1041 | if (error) { | |
1042 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1043 | VLOG_ERR_RL(&rl, "bridge %s: datapath was destroyed externally, " | |
1044 | "forcing reconfiguration", br->name); | |
1045 | if (!retval) { | |
1046 | retval = error; | |
1047 | } | |
1048 | } | |
1049 | } | |
1050 | return retval; | |
1051 | } | |
1052 | ||
1053 | void | |
1054 | bridge_wait(void) | |
1055 | { | |
1056 | struct bridge *br; | |
1057 | ||
1058 | LIST_FOR_EACH (br, struct bridge, node, &all_bridges) { | |
1059 | ofproto_wait(br->ofproto); | |
1060 | if (br->controller) { | |
1061 | continue; | |
1062 | } | |
1063 | ||
93dfc067 | 1064 | mac_learning_wait(br->ml); |
064af421 | 1065 | bond_wait(br); |
064af421 BP |
1066 | } |
1067 | } | |
1068 | ||
1069 | /* Forces 'br' to revalidate all of its flows. This is appropriate when 'br''s | |
1070 | * configuration changes. */ | |
1071 | static void | |
1072 | bridge_flush(struct bridge *br) | |
1073 | { | |
1074 | COVERAGE_INC(bridge_flush); | |
1075 | br->flush = true; | |
93dfc067 | 1076 | mac_learning_flush(br->ml); |
064af421 | 1077 | } |
07c318f4 BP |
1078 | |
1079 | /* Returns the 'br' interface for the ODPP_LOCAL port, or null if 'br' has no | |
1080 | * such interface. */ | |
1081 | static struct iface * | |
1082 | bridge_get_local_iface(struct bridge *br) | |
1083 | { | |
1084 | size_t i, j; | |
1085 | ||
1086 | for (i = 0; i < br->n_ports; i++) { | |
1087 | struct port *port = br->ports[i]; | |
1088 | for (j = 0; j < port->n_ifaces; j++) { | |
1089 | struct iface *iface = port->ifaces[j]; | |
1090 | if (iface->dp_ifidx == ODPP_LOCAL) { | |
1091 | return iface; | |
1092 | } | |
1093 | } | |
1094 | } | |
1095 | ||
1096 | return NULL; | |
1097 | } | |
064af421 | 1098 | \f |
8c4c1387 BP |
1099 | /* Bridge unixctl user interface functions. */ |
1100 | static void | |
8ca79daa BP |
1101 | bridge_unixctl_fdb_show(struct unixctl_conn *conn, |
1102 | const char *args, void *aux UNUSED) | |
8c4c1387 BP |
1103 | { |
1104 | struct ds ds = DS_EMPTY_INITIALIZER; | |
1105 | const struct bridge *br; | |
93dfc067 | 1106 | const struct mac_entry *e; |
8c4c1387 BP |
1107 | |
1108 | br = bridge_lookup(args); | |
1109 | if (!br) { | |
1110 | unixctl_command_reply(conn, 501, "no such bridge"); | |
1111 | return; | |
1112 | } | |
1113 | ||
1114 | ds_put_cstr(&ds, " port VLAN MAC Age\n"); | |
93dfc067 JG |
1115 | LIST_FOR_EACH (e, struct mac_entry, lru_node, &br->ml->lrus) { |
1116 | if (e->port < 0 || e->port >= br->n_ports) { | |
1117 | continue; | |
8c4c1387 | 1118 | } |
93dfc067 JG |
1119 | ds_put_format(&ds, "%5d %4d "ETH_ADDR_FMT" %3d\n", |
1120 | br->ports[e->port]->ifaces[0]->dp_ifidx, | |
1121 | e->vlan, ETH_ADDR_ARGS(e->mac), mac_entry_age(e)); | |
8c4c1387 BP |
1122 | } |
1123 | unixctl_command_reply(conn, 200, ds_cstr(&ds)); | |
1124 | ds_destroy(&ds); | |
1125 | } | |
1126 | \f | |
064af421 | 1127 | /* Bridge reconfiguration functions. */ |
064af421 | 1128 | static struct bridge * |
1a6f1e2a | 1129 | bridge_create(const struct ovsrec_bridge *br_cfg) |
064af421 BP |
1130 | { |
1131 | struct bridge *br; | |
1132 | int error; | |
1133 | ||
1a6f1e2a | 1134 | assert(!bridge_lookup(br_cfg->name)); |
ec6fde61 | 1135 | br = xzalloc(sizeof *br); |
064af421 | 1136 | |
1a6f1e2a JG |
1137 | error = dpif_create_and_open(br_cfg->name, br_cfg->datapath_type, |
1138 | &br->dpif); | |
efacbce6 | 1139 | if (error) { |
064af421 BP |
1140 | free(br); |
1141 | return NULL; | |
1142 | } | |
efacbce6 | 1143 | dpif_flow_flush(br->dpif); |
064af421 | 1144 | |
1a6f1e2a JG |
1145 | error = ofproto_create(br_cfg->name, br_cfg->datapath_type, &bridge_ofhooks, |
1146 | br, &br->ofproto); | |
064af421 | 1147 | if (error) { |
1a6f1e2a JG |
1148 | VLOG_ERR("failed to create switch %s: %s", br_cfg->name, |
1149 | strerror(error)); | |
c228a364 BP |
1150 | dpif_delete(br->dpif); |
1151 | dpif_close(br->dpif); | |
064af421 BP |
1152 | free(br); |
1153 | return NULL; | |
1154 | } | |
1155 | ||
1a6f1e2a JG |
1156 | br->name = xstrdup(br_cfg->name); |
1157 | br->cfg = br_cfg; | |
064af421 BP |
1158 | br->ml = mac_learning_create(); |
1159 | br->sent_config_request = false; | |
70150daf | 1160 | eth_addr_nicira_random(br->default_ea); |
064af421 BP |
1161 | |
1162 | port_array_init(&br->ifaces); | |
1163 | ||
1164 | br->flush = false; | |
1165 | br->bond_next_rebalance = time_msec() + 10000; | |
1166 | ||
1167 | list_push_back(&all_bridges, &br->node); | |
1168 | ||
c228a364 | 1169 | VLOG_INFO("created bridge %s on %s", br->name, dpif_name(br->dpif)); |
064af421 BP |
1170 | |
1171 | return br; | |
1172 | } | |
1173 | ||
1174 | static void | |
1175 | bridge_destroy(struct bridge *br) | |
1176 | { | |
1177 | if (br) { | |
1178 | int error; | |
1179 | ||
1180 | while (br->n_ports > 0) { | |
1181 | port_destroy(br->ports[br->n_ports - 1]); | |
1182 | } | |
1183 | list_remove(&br->node); | |
c228a364 | 1184 | error = dpif_delete(br->dpif); |
064af421 | 1185 | if (error && error != ENOENT) { |
b29ba128 | 1186 | VLOG_ERR("failed to delete %s: %s", |
c228a364 | 1187 | dpif_name(br->dpif), strerror(error)); |
064af421 | 1188 | } |
c228a364 | 1189 | dpif_close(br->dpif); |
064af421 BP |
1190 | ofproto_destroy(br->ofproto); |
1191 | free(br->controller); | |
1192 | mac_learning_destroy(br->ml); | |
1193 | port_array_destroy(&br->ifaces); | |
1194 | free(br->ports); | |
1195 | free(br->name); | |
1196 | free(br); | |
1197 | } | |
1198 | } | |
1199 | ||
1200 | static struct bridge * | |
1201 | bridge_lookup(const char *name) | |
1202 | { | |
1203 | struct bridge *br; | |
1204 | ||
1205 | LIST_FOR_EACH (br, struct bridge, node, &all_bridges) { | |
1206 | if (!strcmp(br->name, name)) { | |
1207 | return br; | |
1208 | } | |
1209 | } | |
1210 | return NULL; | |
1211 | } | |
1212 | ||
1213 | bool | |
1214 | bridge_exists(const char *name) | |
1215 | { | |
1216 | return bridge_lookup(name) ? true : false; | |
1217 | } | |
1218 | ||
1219 | uint64_t | |
1220 | bridge_get_datapathid(const char *name) | |
1221 | { | |
1222 | struct bridge *br = bridge_lookup(name); | |
1223 | return br ? ofproto_get_datapath_id(br->ofproto) : 0; | |
1224 | } | |
1225 | ||
4f2cad2c JP |
1226 | /* Handle requests for a listing of all flows known by the OpenFlow |
1227 | * stack, including those normally hidden. */ | |
1228 | static void | |
8ca79daa BP |
1229 | bridge_unixctl_dump_flows(struct unixctl_conn *conn, |
1230 | const char *args, void *aux UNUSED) | |
4f2cad2c JP |
1231 | { |
1232 | struct bridge *br; | |
1233 | struct ds results; | |
1234 | ||
1235 | br = bridge_lookup(args); | |
1236 | if (!br) { | |
1237 | unixctl_command_reply(conn, 501, "Unknown bridge"); | |
1238 | return; | |
1239 | } | |
1240 | ||
1241 | ds_init(&results); | |
1242 | ofproto_get_all_flows(br->ofproto, &results); | |
1243 | ||
1244 | unixctl_command_reply(conn, 200, ds_cstr(&results)); | |
1245 | ds_destroy(&results); | |
1246 | } | |
1247 | ||
064af421 BP |
1248 | static int |
1249 | bridge_run_one(struct bridge *br) | |
1250 | { | |
1251 | int error; | |
1252 | ||
1253 | error = ofproto_run1(br->ofproto); | |
1254 | if (error) { | |
1255 | return error; | |
1256 | } | |
1257 | ||
93dfc067 | 1258 | mac_learning_run(br->ml, ofproto_get_revalidate_set(br->ofproto)); |
064af421 | 1259 | bond_run(br); |
064af421 BP |
1260 | |
1261 | error = ofproto_run2(br->ofproto, br->flush); | |
1262 | br->flush = false; | |
1263 | ||
1264 | return error; | |
1265 | } | |
1266 | ||
76343538 BP |
1267 | static const struct ovsrec_controller * |
1268 | bridge_get_controller(const struct ovsrec_open_vswitch *ovs_cfg, | |
1269 | const struct bridge *br) | |
064af421 | 1270 | { |
76343538 | 1271 | const struct ovsrec_controller *controller; |
064af421 | 1272 | |
76343538 BP |
1273 | controller = (br->cfg->controller ? br->cfg->controller |
1274 | : ovs_cfg->controller ? ovs_cfg->controller | |
1275 | : NULL); | |
1276 | ||
1277 | if (controller && !strcmp(controller->target, "none")) { | |
1278 | return NULL; | |
064af421 | 1279 | } |
76343538 BP |
1280 | |
1281 | return controller; | |
064af421 BP |
1282 | } |
1283 | ||
6ae39834 BP |
1284 | static bool |
1285 | check_duplicate_ifaces(struct bridge *br, struct iface *iface, void *ifaces_) | |
1286 | { | |
1287 | struct svec *ifaces = ifaces_; | |
1288 | if (!svec_contains(ifaces, iface->name)) { | |
1289 | svec_add(ifaces, iface->name); | |
1290 | svec_sort(ifaces); | |
1291 | return true; | |
1292 | } else { | |
1293 | VLOG_ERR("bridge %s: %s interface is on multiple ports, " | |
1294 | "removing from %s", | |
1295 | br->name, iface->name, iface->port->name); | |
1296 | return false; | |
1297 | } | |
1298 | } | |
1299 | ||
064af421 | 1300 | static void |
76343538 BP |
1301 | bridge_reconfigure_one(const struct ovsrec_open_vswitch *ovs_cfg, |
1302 | struct bridge *br) | |
064af421 | 1303 | { |
76343538 BP |
1304 | struct shash old_ports, new_ports; |
1305 | struct svec ifaces; | |
064af421 BP |
1306 | struct svec listeners, old_listeners; |
1307 | struct svec snoops, old_snoops; | |
76343538 | 1308 | struct shash_node *node; |
6ae39834 | 1309 | size_t i; |
064af421 BP |
1310 | |
1311 | /* Collect old ports. */ | |
76343538 | 1312 | shash_init(&old_ports); |
064af421 | 1313 | for (i = 0; i < br->n_ports; i++) { |
76343538 | 1314 | shash_add(&old_ports, br->ports[i]->name, br->ports[i]); |
064af421 | 1315 | } |
064af421 BP |
1316 | |
1317 | /* Collect new ports. */ | |
76343538 BP |
1318 | shash_init(&new_ports); |
1319 | for (i = 0; i < br->cfg->n_ports; i++) { | |
1320 | const char *name = br->cfg->ports[i]->name; | |
1321 | if (!shash_add_once(&new_ports, name, br->cfg->ports[i])) { | |
1322 | VLOG_WARN("bridge %s: %s specified twice as bridge port", | |
1323 | br->name, name); | |
1324 | } | |
1325 | } | |
e073f944 BP |
1326 | |
1327 | /* If we have a controller, then we need a local port. Complain if the | |
1328 | * user didn't specify one. | |
1329 | * | |
1330 | * XXX perhaps we should synthesize a port ourselves in this case. */ | |
76343538 | 1331 | if (bridge_get_controller(ovs_cfg, br)) { |
72865317 BP |
1332 | char local_name[IF_NAMESIZE]; |
1333 | int error; | |
1334 | ||
1335 | error = dpif_port_get_name(br->dpif, ODPP_LOCAL, | |
1336 | local_name, sizeof local_name); | |
e073f944 BP |
1337 | if (!error && !shash_find(&new_ports, local_name)) { |
1338 | VLOG_WARN("bridge %s: controller specified but no local port " | |
1339 | "(port named %s) defined", | |
1340 | br->name, local_name); | |
72865317 | 1341 | } |
064af421 | 1342 | } |
064af421 | 1343 | |
064af421 | 1344 | /* Get rid of deleted ports and add new ports. */ |
76343538 BP |
1345 | SHASH_FOR_EACH (node, &old_ports) { |
1346 | if (!shash_find(&new_ports, node->name)) { | |
1347 | port_destroy(node->data); | |
064af421 BP |
1348 | } |
1349 | } | |
76343538 BP |
1350 | SHASH_FOR_EACH (node, &new_ports) { |
1351 | struct port *port = shash_find_data(&old_ports, node->name); | |
1352 | if (!port) { | |
1353 | port = port_create(br, node->name); | |
064af421 | 1354 | } |
76343538 | 1355 | port_reconfigure(port, node->data); |
064af421 | 1356 | } |
76343538 BP |
1357 | shash_destroy(&old_ports); |
1358 | shash_destroy(&new_ports); | |
064af421 BP |
1359 | |
1360 | /* Check and delete duplicate interfaces. */ | |
1361 | svec_init(&ifaces); | |
6ae39834 | 1362 | iterate_and_prune_ifaces(br, check_duplicate_ifaces, &ifaces); |
064af421 BP |
1363 | svec_destroy(&ifaces); |
1364 | ||
1365 | /* Delete all flows if we're switching from connected to standalone or vice | |
1366 | * versa. (XXX Should we delete all flows if we are switching from one | |
1367 | * controller to another?) */ | |
1368 | ||
76343538 | 1369 | #if 0 |
064af421 BP |
1370 | /* Configure OpenFlow management listeners. */ |
1371 | svec_init(&listeners); | |
1372 | cfg_get_all_strings(&listeners, "bridge.%s.openflow.listeners", br->name); | |
1373 | if (!listeners.n) { | |
1374 | svec_add_nocopy(&listeners, xasprintf("punix:%s/%s.mgmt", | |
1375 | ovs_rundir, br->name)); | |
1376 | } else if (listeners.n == 1 && !strcmp(listeners.names[0], "none")) { | |
1377 | svec_clear(&listeners); | |
1378 | } | |
1379 | svec_sort_unique(&listeners); | |
1380 | ||
1381 | svec_init(&old_listeners); | |
1382 | ofproto_get_listeners(br->ofproto, &old_listeners); | |
1383 | svec_sort_unique(&old_listeners); | |
1384 | ||
1385 | if (!svec_equal(&listeners, &old_listeners)) { | |
1386 | ofproto_set_listeners(br->ofproto, &listeners); | |
1387 | } | |
1388 | svec_destroy(&listeners); | |
1389 | svec_destroy(&old_listeners); | |
1390 | ||
1391 | /* Configure OpenFlow controller connection snooping. */ | |
1392 | svec_init(&snoops); | |
1393 | cfg_get_all_strings(&snoops, "bridge.%s.openflow.snoops", br->name); | |
1394 | if (!snoops.n) { | |
1395 | svec_add_nocopy(&snoops, xasprintf("punix:%s/%s.snoop", | |
1396 | ovs_rundir, br->name)); | |
1397 | } else if (snoops.n == 1 && !strcmp(snoops.names[0], "none")) { | |
1398 | svec_clear(&snoops); | |
1399 | } | |
1400 | svec_sort_unique(&snoops); | |
1401 | ||
1402 | svec_init(&old_snoops); | |
1403 | ofproto_get_snoops(br->ofproto, &old_snoops); | |
1404 | svec_sort_unique(&old_snoops); | |
1405 | ||
1406 | if (!svec_equal(&snoops, &old_snoops)) { | |
1407 | ofproto_set_snoops(br->ofproto, &snoops); | |
1408 | } | |
1409 | svec_destroy(&snoops); | |
1410 | svec_destroy(&old_snoops); | |
76343538 BP |
1411 | #else |
1412 | /* Default listener. */ | |
1413 | svec_init(&listeners); | |
1414 | svec_add_nocopy(&listeners, xasprintf("punix:%s/%s.mgmt", | |
1415 | ovs_rundir, br->name)); | |
1416 | svec_init(&old_listeners); | |
1417 | ofproto_get_listeners(br->ofproto, &old_listeners); | |
1418 | if (!svec_equal(&listeners, &old_listeners)) { | |
1419 | ofproto_set_listeners(br->ofproto, &listeners); | |
1420 | } | |
1421 | svec_destroy(&listeners); | |
1422 | svec_destroy(&old_listeners); | |
064af421 | 1423 | |
76343538 BP |
1424 | /* Default snoop. */ |
1425 | svec_init(&snoops); | |
1426 | svec_add_nocopy(&snoops, xasprintf("punix:%s/%s.snoop", | |
1427 | ovs_rundir, br->name)); | |
1428 | svec_init(&old_snoops); | |
1429 | ofproto_get_snoops(br->ofproto, &old_snoops); | |
1430 | if (!svec_equal(&snoops, &old_snoops)) { | |
1431 | ofproto_set_snoops(br->ofproto, &snoops); | |
1432 | } | |
1433 | svec_destroy(&snoops); | |
1434 | svec_destroy(&old_snoops); | |
1435 | #endif | |
1436 | ||
064af421 BP |
1437 | mirror_reconfigure(br); |
1438 | } | |
1439 | ||
1440 | static void | |
76343538 BP |
1441 | bridge_reconfigure_controller(const struct ovsrec_open_vswitch *ovs_cfg, |
1442 | struct bridge *br) | |
064af421 BP |
1443 | { |
1444 | char *pfx = xasprintf("bridge.%s.controller", br->name); | |
76343538 | 1445 | const struct ovsrec_controller *c; |
064af421 | 1446 | |
76343538 BP |
1447 | c = bridge_get_controller(ovs_cfg, br); |
1448 | if ((br->controller != NULL) != (c != NULL)) { | |
064af421 BP |
1449 | ofproto_flush_flows(br->ofproto); |
1450 | } | |
1451 | free(br->controller); | |
76343538 | 1452 | br->controller = c ? xstrdup(c->target) : NULL; |
064af421 | 1453 | |
76343538 | 1454 | if (c) { |
064af421 BP |
1455 | int max_backoff, probe; |
1456 | int rate_limit, burst_limit; | |
1457 | ||
76343538 | 1458 | if (!strcmp(c->target, "discover")) { |
064af421 | 1459 | ofproto_set_discovery(br->ofproto, true, |
76343538 BP |
1460 | c->discover_accept_regex, |
1461 | c->discover_update_resolv_conf); | |
064af421 | 1462 | } else { |
07c318f4 | 1463 | struct iface *local_iface; |
76343538 | 1464 | struct in_addr ip; |
064af421 | 1465 | bool in_band; |
064af421 | 1466 | |
76343538 BP |
1467 | in_band = (!c->connection_mode |
1468 | || !strcmp(c->connection_mode, "out-of-band")); | |
064af421 BP |
1469 | ofproto_set_discovery(br->ofproto, false, NULL, NULL); |
1470 | ofproto_set_in_band(br->ofproto, in_band); | |
1471 | ||
07c318f4 | 1472 | local_iface = bridge_get_local_iface(br); |
76343538 | 1473 | if (local_iface && c->local_ip && inet_aton(c->local_ip, &ip)) { |
07c318f4 | 1474 | struct netdev *netdev = local_iface->netdev; |
f446d59b | 1475 | struct in_addr mask, gateway; |
76343538 BP |
1476 | |
1477 | if (!c->local_netmask || !inet_aton(c->local_netmask, &mask)) { | |
1478 | mask.s_addr = 0; | |
1479 | } | |
1480 | if (!c->local_gateway | |
1481 | || !inet_aton(c->local_gateway, &gateway)) { | |
1482 | gateway.s_addr = 0; | |
1483 | } | |
07c318f4 BP |
1484 | |
1485 | netdev_turn_flags_on(netdev, NETDEV_UP, true); | |
1486 | if (!mask.s_addr) { | |
1487 | mask.s_addr = guess_netmask(ip.s_addr); | |
1488 | } | |
1489 | if (!netdev_set_in4(netdev, ip, mask)) { | |
1490 | VLOG_INFO("bridge %s: configured IP address "IP_FMT", " | |
1491 | "netmask "IP_FMT, | |
1492 | br->name, IP_ARGS(&ip.s_addr), | |
1493 | IP_ARGS(&mask.s_addr)); | |
1494 | } | |
064af421 | 1495 | |
07c318f4 BP |
1496 | if (gateway.s_addr) { |
1497 | if (!netdev_add_router(netdev, gateway)) { | |
1498 | VLOG_INFO("bridge %s: configured gateway "IP_FMT, | |
1499 | br->name, IP_ARGS(&gateway.s_addr)); | |
064af421 BP |
1500 | } |
1501 | } | |
064af421 BP |
1502 | } |
1503 | } | |
1504 | ||
064af421 | 1505 | ofproto_set_failure(br->ofproto, |
76343538 BP |
1506 | (!c->fail_mode |
1507 | || !strcmp(c->fail_mode, "standalone") | |
1508 | || !strcmp(c->fail_mode, "open"))); | |
1509 | ||
1510 | probe = c->inactivity_probe ? *c->inactivity_probe / 1000 : 5; | |
952efc48 | 1511 | ofproto_set_probe_interval(br->ofproto, probe); |
064af421 | 1512 | |
76343538 | 1513 | max_backoff = c->max_backoff ? *c->max_backoff / 1000 : 8; |
064af421 BP |
1514 | ofproto_set_max_backoff(br->ofproto, max_backoff); |
1515 | ||
76343538 BP |
1516 | rate_limit = c->controller_rate_limit ? *c->controller_rate_limit : 0; |
1517 | burst_limit = c->controller_burst_limit ? *c->controller_burst_limit : 0; | |
064af421 | 1518 | ofproto_set_rate_limit(br->ofproto, rate_limit, burst_limit); |
064af421 BP |
1519 | } else { |
1520 | union ofp_action action; | |
1521 | flow_t flow; | |
1522 | ||
1523 | /* Set up a flow that matches every packet and directs them to | |
1524 | * OFPP_NORMAL (which goes to us). */ | |
1525 | memset(&action, 0, sizeof action); | |
1526 | action.type = htons(OFPAT_OUTPUT); | |
1527 | action.output.len = htons(sizeof action); | |
1528 | action.output.port = htons(OFPP_NORMAL); | |
1529 | memset(&flow, 0, sizeof flow); | |
1530 | ofproto_add_flow(br->ofproto, &flow, OFPFW_ALL, 0, | |
1531 | &action, 1, 0); | |
1532 | ||
1533 | ofproto_set_in_band(br->ofproto, false); | |
1534 | ofproto_set_max_backoff(br->ofproto, 1); | |
1535 | ofproto_set_probe_interval(br->ofproto, 5); | |
1536 | ofproto_set_failure(br->ofproto, false); | |
064af421 BP |
1537 | } |
1538 | free(pfx); | |
1539 | ||
1540 | ofproto_set_controller(br->ofproto, br->controller); | |
1541 | } | |
1542 | ||
1543 | static void | |
76343538 | 1544 | bridge_get_all_ifaces(const struct bridge *br, struct shash *ifaces) |
064af421 BP |
1545 | { |
1546 | size_t i, j; | |
1547 | ||
76343538 | 1548 | shash_init(ifaces); |
064af421 BP |
1549 | for (i = 0; i < br->n_ports; i++) { |
1550 | struct port *port = br->ports[i]; | |
1551 | for (j = 0; j < port->n_ifaces; j++) { | |
1552 | struct iface *iface = port->ifaces[j]; | |
76343538 | 1553 | shash_add_once(ifaces, iface->name, iface); |
064af421 | 1554 | } |
76343538 BP |
1555 | if (port->n_ifaces > 1 && port->cfg->bond_fake_iface) { |
1556 | shash_add_once(ifaces, port->name, NULL); | |
35c979bf | 1557 | } |
064af421 | 1558 | } |
064af421 BP |
1559 | } |
1560 | ||
1561 | /* For robustness, in case the administrator moves around datapath ports behind | |
1562 | * our back, we re-check all the datapath port numbers here. | |
1563 | * | |
1564 | * This function will set the 'dp_ifidx' members of interfaces that have | |
1565 | * disappeared to -1, so only call this function from a context where those | |
1566 | * 'struct iface's will be removed from the bridge. Otherwise, the -1 | |
1567 | * 'dp_ifidx'es will cause trouble later when we try to send them to the | |
1568 | * datapath, which doesn't support UINT16_MAX+1 ports. */ | |
1569 | static void | |
1570 | bridge_fetch_dp_ifaces(struct bridge *br) | |
1571 | { | |
1572 | struct odp_port *dpif_ports; | |
1573 | size_t n_dpif_ports; | |
1574 | size_t i, j; | |
1575 | ||
1576 | /* Reset all interface numbers. */ | |
1577 | for (i = 0; i < br->n_ports; i++) { | |
1578 | struct port *port = br->ports[i]; | |
1579 | for (j = 0; j < port->n_ifaces; j++) { | |
1580 | struct iface *iface = port->ifaces[j]; | |
1581 | iface->dp_ifidx = -1; | |
1582 | } | |
1583 | } | |
1584 | port_array_clear(&br->ifaces); | |
1585 | ||
c228a364 | 1586 | dpif_port_list(br->dpif, &dpif_ports, &n_dpif_ports); |
064af421 BP |
1587 | for (i = 0; i < n_dpif_ports; i++) { |
1588 | struct odp_port *p = &dpif_ports[i]; | |
1589 | struct iface *iface = iface_lookup(br, p->devname); | |
1590 | if (iface) { | |
1591 | if (iface->dp_ifidx >= 0) { | |
b29ba128 | 1592 | VLOG_WARN("%s reported interface %s twice", |
c228a364 | 1593 | dpif_name(br->dpif), p->devname); |
064af421 | 1594 | } else if (iface_from_dp_ifidx(br, p->port)) { |
b29ba128 | 1595 | VLOG_WARN("%s reported interface %"PRIu16" twice", |
c228a364 | 1596 | dpif_name(br->dpif), p->port); |
064af421 BP |
1597 | } else { |
1598 | port_array_set(&br->ifaces, p->port, iface); | |
1599 | iface->dp_ifidx = p->port; | |
1600 | } | |
093e47f4 BP |
1601 | |
1602 | if (iface->cfg) { | |
1603 | int64_t ofport = (iface->dp_ifidx >= 0 | |
1604 | ? odp_port_to_ofp_port(iface->dp_ifidx) | |
1605 | : -1); | |
1606 | ovsrec_interface_set_ofport(iface->cfg, &ofport, 1); | |
1607 | } | |
064af421 BP |
1608 | } |
1609 | } | |
1610 | free(dpif_ports); | |
1611 | } | |
1612 | \f | |
1613 | /* Bridge packet processing functions. */ | |
1614 | ||
da285df4 BP |
1615 | static int |
1616 | bond_hash(const uint8_t mac[ETH_ADDR_LEN]) | |
1617 | { | |
1618 | return hash_bytes(mac, ETH_ADDR_LEN, 0) & BOND_MASK; | |
1619 | } | |
1620 | ||
064af421 BP |
1621 | static struct bond_entry * |
1622 | lookup_bond_entry(const struct port *port, const uint8_t mac[ETH_ADDR_LEN]) | |
1623 | { | |
da285df4 | 1624 | return &port->bond_hash[bond_hash(mac)]; |
064af421 BP |
1625 | } |
1626 | ||
1627 | static int | |
1628 | bond_choose_iface(const struct port *port) | |
1629 | { | |
8b2a2f4a JG |
1630 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20); |
1631 | size_t i, best_down_slave = -1; | |
1632 | long long next_delay_expiration = LLONG_MAX; | |
1633 | ||
064af421 | 1634 | for (i = 0; i < port->n_ifaces; i++) { |
8b2a2f4a JG |
1635 | struct iface *iface = port->ifaces[i]; |
1636 | ||
1637 | if (iface->enabled) { | |
064af421 | 1638 | return i; |
8b2a2f4a JG |
1639 | } else if (iface->delay_expires < next_delay_expiration) { |
1640 | best_down_slave = i; | |
1641 | next_delay_expiration = iface->delay_expires; | |
064af421 BP |
1642 | } |
1643 | } | |
8b2a2f4a JG |
1644 | |
1645 | if (best_down_slave != -1) { | |
1646 | struct iface *iface = port->ifaces[best_down_slave]; | |
1647 | ||
1648 | VLOG_INFO_RL(&rl, "interface %s: skipping remaining %lli ms updelay " | |
1649 | "since no other interface is up", iface->name, | |
1650 | iface->delay_expires - time_msec()); | |
1651 | bond_enable_slave(iface, true); | |
1652 | } | |
1653 | ||
1654 | return best_down_slave; | |
064af421 BP |
1655 | } |
1656 | ||
1657 | static bool | |
2303f3b2 | 1658 | choose_output_iface(const struct port *port, const uint8_t *dl_src, |
064af421 BP |
1659 | uint16_t *dp_ifidx, tag_type *tags) |
1660 | { | |
1661 | struct iface *iface; | |
1662 | ||
1663 | assert(port->n_ifaces); | |
1664 | if (port->n_ifaces == 1) { | |
1665 | iface = port->ifaces[0]; | |
1666 | } else { | |
2303f3b2 | 1667 | struct bond_entry *e = lookup_bond_entry(port, dl_src); |
064af421 BP |
1668 | if (e->iface_idx < 0 || e->iface_idx >= port->n_ifaces |
1669 | || !port->ifaces[e->iface_idx]->enabled) { | |
1670 | /* XXX select interface properly. The current interface selection | |
1671 | * is only good for testing the rebalancing code. */ | |
1672 | e->iface_idx = bond_choose_iface(port); | |
1673 | if (e->iface_idx < 0) { | |
1674 | *tags |= port->no_ifaces_tag; | |
1675 | return false; | |
1676 | } | |
1677 | e->iface_tag = tag_create_random(); | |
85c74638 | 1678 | ((struct port *) port)->bond_compat_is_stale = true; |
064af421 BP |
1679 | } |
1680 | *tags |= e->iface_tag; | |
1681 | iface = port->ifaces[e->iface_idx]; | |
1682 | } | |
1683 | *dp_ifidx = iface->dp_ifidx; | |
1684 | *tags |= iface->tag; /* Currently only used for bonding. */ | |
1685 | return true; | |
1686 | } | |
1687 | ||
1688 | static void | |
1689 | bond_link_status_update(struct iface *iface, bool carrier) | |
1690 | { | |
1691 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20); | |
1692 | struct port *port = iface->port; | |
1693 | ||
1694 | if ((carrier == iface->enabled) == (iface->delay_expires == LLONG_MAX)) { | |
1695 | /* Nothing to do. */ | |
1696 | return; | |
1697 | } | |
1698 | VLOG_INFO_RL(&rl, "interface %s: carrier %s", | |
1699 | iface->name, carrier ? "detected" : "dropped"); | |
1700 | if (carrier == iface->enabled) { | |
1701 | iface->delay_expires = LLONG_MAX; | |
1702 | VLOG_INFO_RL(&rl, "interface %s: will not be %s", | |
1703 | iface->name, carrier ? "disabled" : "enabled"); | |
8b2a2f4a JG |
1704 | } else if (carrier && port->active_iface < 0) { |
1705 | bond_enable_slave(iface, true); | |
1706 | if (port->updelay) { | |
1707 | VLOG_INFO_RL(&rl, "interface %s: skipping %d ms updelay since no " | |
1708 | "other interface is up", iface->name, port->updelay); | |
1709 | } | |
064af421 BP |
1710 | } else { |
1711 | int delay = carrier ? port->updelay : port->downdelay; | |
1712 | iface->delay_expires = time_msec() + delay; | |
1713 | if (delay) { | |
1714 | VLOG_INFO_RL(&rl, | |
1715 | "interface %s: will be %s if it stays %s for %d ms", | |
1716 | iface->name, | |
1717 | carrier ? "enabled" : "disabled", | |
1718 | carrier ? "up" : "down", | |
1719 | delay); | |
1720 | } | |
1721 | } | |
1722 | } | |
1723 | ||
1724 | static void | |
1725 | bond_choose_active_iface(struct port *port) | |
1726 | { | |
1727 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20); | |
1728 | ||
1729 | port->active_iface = bond_choose_iface(port); | |
1730 | port->active_iface_tag = tag_create_random(); | |
1731 | if (port->active_iface >= 0) { | |
1732 | VLOG_INFO_RL(&rl, "port %s: active interface is now %s", | |
1733 | port->name, port->ifaces[port->active_iface]->name); | |
1734 | } else { | |
1735 | VLOG_WARN_RL(&rl, "port %s: all ports disabled, no active interface", | |
1736 | port->name); | |
1737 | } | |
1738 | } | |
1739 | ||
da285df4 BP |
1740 | static void |
1741 | bond_enable_slave(struct iface *iface, bool enable) | |
1742 | { | |
1743 | struct port *port = iface->port; | |
1744 | struct bridge *br = port->bridge; | |
1745 | ||
8b2a2f4a JG |
1746 | /* This acts as a recursion check. If the act of disabling a slave |
1747 | * causes a different slave to be enabled, the flag will allow us to | |
1748 | * skip redundant work when we reenter this function. It must be | |
1749 | * cleared on exit to keep things safe with multiple bonds. */ | |
1750 | static bool moving_active_iface = false; | |
1751 | ||
da285df4 BP |
1752 | iface->delay_expires = LLONG_MAX; |
1753 | if (enable == iface->enabled) { | |
1754 | return; | |
1755 | } | |
1756 | ||
1757 | iface->enabled = enable; | |
1758 | if (!iface->enabled) { | |
17ea75b2 | 1759 | VLOG_WARN("interface %s: disabled", iface->name); |
da285df4 BP |
1760 | ofproto_revalidate(br->ofproto, iface->tag); |
1761 | if (iface->port_ifidx == port->active_iface) { | |
1762 | ofproto_revalidate(br->ofproto, | |
1763 | port->active_iface_tag); | |
8b2a2f4a JG |
1764 | |
1765 | /* Disabling a slave can lead to another slave being immediately | |
1766 | * enabled if there will be no active slaves but one is waiting | |
1767 | * on an updelay. In this case we do not need to run most of the | |
1768 | * code for the newly enabled slave since there was no period | |
1769 | * without an active slave and it is redundant with the disabling | |
1770 | * path. */ | |
1771 | moving_active_iface = true; | |
da285df4 BP |
1772 | bond_choose_active_iface(port); |
1773 | } | |
1774 | bond_send_learning_packets(port); | |
1775 | } else { | |
17ea75b2 | 1776 | VLOG_WARN("interface %s: enabled", iface->name); |
8b2a2f4a | 1777 | if (port->active_iface < 0 && !moving_active_iface) { |
da285df4 BP |
1778 | ofproto_revalidate(br->ofproto, port->no_ifaces_tag); |
1779 | bond_choose_active_iface(port); | |
1780 | bond_send_learning_packets(port); | |
1781 | } | |
1782 | iface->tag = tag_create_random(); | |
1783 | } | |
8b2a2f4a JG |
1784 | |
1785 | moving_active_iface = false; | |
1786 | port->bond_compat_is_stale = true; | |
da285df4 BP |
1787 | } |
1788 | ||
064af421 BP |
1789 | static void |
1790 | bond_run(struct bridge *br) | |
1791 | { | |
1792 | size_t i, j; | |
1793 | ||
1794 | for (i = 0; i < br->n_ports; i++) { | |
1795 | struct port *port = br->ports[i]; | |
85c74638 | 1796 | |
8b2a2f4a JG |
1797 | if (port->n_ifaces >= 2) { |
1798 | for (j = 0; j < port->n_ifaces; j++) { | |
1799 | struct iface *iface = port->ifaces[j]; | |
1800 | if (time_msec() >= iface->delay_expires) { | |
1801 | bond_enable_slave(iface, !iface->enabled); | |
1802 | } | |
1803 | } | |
1804 | } | |
1805 | ||
85c74638 BP |
1806 | if (port->bond_compat_is_stale) { |
1807 | port->bond_compat_is_stale = false; | |
1808 | port_update_bond_compat(port); | |
1809 | } | |
064af421 BP |
1810 | } |
1811 | } | |
1812 | ||
1813 | static void | |
1814 | bond_wait(struct bridge *br) | |
1815 | { | |
1816 | size_t i, j; | |
1817 | ||
1818 | for (i = 0; i < br->n_ports; i++) { | |
1819 | struct port *port = br->ports[i]; | |
1820 | if (port->n_ifaces < 2) { | |
1821 | continue; | |
1822 | } | |
1823 | for (j = 0; j < port->n_ifaces; j++) { | |
1824 | struct iface *iface = port->ifaces[j]; | |
1825 | if (iface->delay_expires != LLONG_MAX) { | |
1826 | poll_timer_wait(iface->delay_expires - time_msec()); | |
1827 | } | |
1828 | } | |
1829 | } | |
1830 | } | |
1831 | ||
1832 | static bool | |
1833 | set_dst(struct dst *p, const flow_t *flow, | |
1834 | const struct port *in_port, const struct port *out_port, | |
1835 | tag_type *tags) | |
1836 | { | |
064af421 BP |
1837 | p->vlan = (out_port->vlan >= 0 ? OFP_VLAN_NONE |
1838 | : in_port->vlan >= 0 ? in_port->vlan | |
1839 | : ntohs(flow->dl_vlan)); | |
2303f3b2 | 1840 | return choose_output_iface(out_port, flow->dl_src, &p->dp_ifidx, tags); |
064af421 BP |
1841 | } |
1842 | ||
1843 | static void | |
1844 | swap_dst(struct dst *p, struct dst *q) | |
1845 | { | |
1846 | struct dst tmp = *p; | |
1847 | *p = *q; | |
1848 | *q = tmp; | |
1849 | } | |
1850 | ||
1851 | /* Moves all the dsts with vlan == 'vlan' to the front of the 'n_dsts' in | |
1852 | * 'dsts'. (This may help performance by reducing the number of VLAN changes | |
1853 | * that we push to the datapath. We could in fact fully sort the array by | |
1854 | * vlan, but in most cases there are at most two different vlan tags so that's | |
1855 | * possibly overkill.) */ | |
1856 | static void | |
1857 | partition_dsts(struct dst *dsts, size_t n_dsts, int vlan) | |
1858 | { | |
1859 | struct dst *first = dsts; | |
1860 | struct dst *last = dsts + n_dsts; | |
1861 | ||
1862 | while (first != last) { | |
1863 | /* Invariants: | |
1864 | * - All dsts < first have vlan == 'vlan'. | |
1865 | * - All dsts >= last have vlan != 'vlan'. | |
1866 | * - first < last. */ | |
1867 | while (first->vlan == vlan) { | |
1868 | if (++first == last) { | |
1869 | return; | |
1870 | } | |
1871 | } | |
1872 | ||
1873 | /* Same invariants, plus one additional: | |
1874 | * - first->vlan != vlan. | |
1875 | */ | |
1876 | while (last[-1].vlan != vlan) { | |
1877 | if (--last == first) { | |
1878 | return; | |
1879 | } | |
1880 | } | |
1881 | ||
1882 | /* Same invariants, plus one additional: | |
1883 | * - last[-1].vlan == vlan.*/ | |
1884 | swap_dst(first++, --last); | |
1885 | } | |
1886 | } | |
1887 | ||
1888 | static int | |
1889 | mirror_mask_ffs(mirror_mask_t mask) | |
1890 | { | |
1891 | BUILD_ASSERT_DECL(sizeof(unsigned int) >= sizeof(mask)); | |
1892 | return ffs(mask); | |
1893 | } | |
1894 | ||
1895 | static bool | |
1896 | dst_is_duplicate(const struct dst *dsts, size_t n_dsts, | |
1897 | const struct dst *test) | |
1898 | { | |
1899 | size_t i; | |
1900 | for (i = 0; i < n_dsts; i++) { | |
1901 | if (dsts[i].vlan == test->vlan && dsts[i].dp_ifidx == test->dp_ifidx) { | |
1902 | return true; | |
1903 | } | |
1904 | } | |
1905 | return false; | |
1906 | } | |
1907 | ||
1908 | static bool | |
1909 | port_trunks_vlan(const struct port *port, uint16_t vlan) | |
1910 | { | |
1911 | return port->vlan < 0 && bitmap_is_set(port->trunks, vlan); | |
1912 | } | |
1913 | ||
1914 | static bool | |
1915 | port_includes_vlan(const struct port *port, uint16_t vlan) | |
1916 | { | |
1917 | return vlan == port->vlan || port_trunks_vlan(port, vlan); | |
1918 | } | |
1919 | ||
1920 | static size_t | |
1921 | compose_dsts(const struct bridge *br, const flow_t *flow, uint16_t vlan, | |
1922 | const struct port *in_port, const struct port *out_port, | |
6a07af36 | 1923 | struct dst dsts[], tag_type *tags, uint16_t *nf_output_iface) |
064af421 BP |
1924 | { |
1925 | mirror_mask_t mirrors = in_port->src_mirrors; | |
1926 | struct dst *dst = dsts; | |
1927 | size_t i; | |
1928 | ||
064af421 BP |
1929 | if (out_port == FLOOD_PORT) { |
1930 | /* XXX use ODP_FLOOD if no vlans or bonding. */ | |
1931 | /* XXX even better, define each VLAN as a datapath port group */ | |
1932 | for (i = 0; i < br->n_ports; i++) { | |
1933 | struct port *port = br->ports[i]; | |
1934 | if (port != in_port && port_includes_vlan(port, vlan) | |
1935 | && !port->is_mirror_output_port | |
1936 | && set_dst(dst, flow, in_port, port, tags)) { | |
1937 | mirrors |= port->dst_mirrors; | |
1938 | dst++; | |
1939 | } | |
1940 | } | |
6a07af36 | 1941 | *nf_output_iface = NF_OUT_FLOOD; |
064af421 | 1942 | } else if (out_port && set_dst(dst, flow, in_port, out_port, tags)) { |
6a07af36 | 1943 | *nf_output_iface = dst->dp_ifidx; |
064af421 BP |
1944 | mirrors |= out_port->dst_mirrors; |
1945 | dst++; | |
1946 | } | |
1947 | ||
1948 | while (mirrors) { | |
1949 | struct mirror *m = br->mirrors[mirror_mask_ffs(mirrors) - 1]; | |
1950 | if (!m->n_vlans || vlan_is_mirrored(m, vlan)) { | |
1951 | if (m->out_port) { | |
1952 | if (set_dst(dst, flow, in_port, m->out_port, tags) | |
1953 | && !dst_is_duplicate(dsts, dst - dsts, dst)) { | |
1954 | dst++; | |
1955 | } | |
1956 | } else { | |
1957 | for (i = 0; i < br->n_ports; i++) { | |
1958 | struct port *port = br->ports[i]; | |
1959 | if (port_includes_vlan(port, m->out_vlan) | |
274de4d2 | 1960 | && set_dst(dst, flow, in_port, port, tags)) |
064af421 | 1961 | { |
43aa5f47 JG |
1962 | int flow_vlan; |
1963 | ||
064af421 BP |
1964 | if (port->vlan < 0) { |
1965 | dst->vlan = m->out_vlan; | |
1966 | } | |
274de4d2 BP |
1967 | if (dst_is_duplicate(dsts, dst - dsts, dst)) { |
1968 | continue; | |
1969 | } | |
43aa5f47 JG |
1970 | |
1971 | /* Use the vlan tag on the original flow instead of | |
1972 | * the one passed in the vlan parameter. This ensures | |
1973 | * that we compare the vlan from before any implicit | |
1974 | * tagging tags place. This is necessary because | |
1975 | * dst->vlan is the final vlan, after removing implicit | |
1976 | * tags. */ | |
1977 | flow_vlan = ntohs(flow->dl_vlan); | |
1978 | if (flow_vlan == 0) { | |
1979 | flow_vlan = OFP_VLAN_NONE; | |
1980 | } | |
1981 | if (port == in_port && dst->vlan == flow_vlan) { | |
064af421 BP |
1982 | /* Don't send out input port on same VLAN. */ |
1983 | continue; | |
1984 | } | |
1985 | dst++; | |
1986 | } | |
1987 | } | |
1988 | } | |
1989 | } | |
1990 | mirrors &= mirrors - 1; | |
1991 | } | |
1992 | ||
1993 | partition_dsts(dsts, dst - dsts, ntohs(flow->dl_vlan)); | |
1994 | return dst - dsts; | |
1995 | } | |
1996 | ||
1997 | static void UNUSED | |
1998 | print_dsts(const struct dst *dsts, size_t n) | |
1999 | { | |
2000 | for (; n--; dsts++) { | |
2001 | printf(">p%"PRIu16, dsts->dp_ifidx); | |
2002 | if (dsts->vlan != OFP_VLAN_NONE) { | |
2003 | printf("v%"PRIu16, dsts->vlan); | |
2004 | } | |
2005 | } | |
2006 | } | |
2007 | ||
2008 | static void | |
2009 | compose_actions(struct bridge *br, const flow_t *flow, uint16_t vlan, | |
2010 | const struct port *in_port, const struct port *out_port, | |
6a07af36 JG |
2011 | tag_type *tags, struct odp_actions *actions, |
2012 | uint16_t *nf_output_iface) | |
064af421 BP |
2013 | { |
2014 | struct dst dsts[DP_MAX_PORTS * (MAX_MIRRORS + 1)]; | |
2015 | size_t n_dsts; | |
2016 | const struct dst *p; | |
2017 | uint16_t cur_vlan; | |
2018 | ||
6a07af36 JG |
2019 | n_dsts = compose_dsts(br, flow, vlan, in_port, out_port, dsts, tags, |
2020 | nf_output_iface); | |
064af421 BP |
2021 | |
2022 | cur_vlan = ntohs(flow->dl_vlan); | |
2023 | for (p = dsts; p < &dsts[n_dsts]; p++) { | |
2024 | union odp_action *a; | |
2025 | if (p->vlan != cur_vlan) { | |
2026 | if (p->vlan == OFP_VLAN_NONE) { | |
2027 | odp_actions_add(actions, ODPAT_STRIP_VLAN); | |
2028 | } else { | |
2029 | a = odp_actions_add(actions, ODPAT_SET_VLAN_VID); | |
2030 | a->vlan_vid.vlan_vid = htons(p->vlan); | |
2031 | } | |
2032 | cur_vlan = p->vlan; | |
2033 | } | |
2034 | a = odp_actions_add(actions, ODPAT_OUTPUT); | |
2035 | a->output.port = p->dp_ifidx; | |
2036 | } | |
2037 | } | |
2038 | ||
e96a4d80 JG |
2039 | /* Returns the effective vlan of a packet, taking into account both the |
2040 | * 802.1Q header and implicitly tagged ports. A value of 0 indicates that | |
2041 | * the packet is untagged and -1 indicates it has an invalid header and | |
2042 | * should be dropped. */ | |
2043 | static int flow_get_vlan(struct bridge *br, const flow_t *flow, | |
2044 | struct port *in_port, bool have_packet) | |
2045 | { | |
2046 | /* Note that dl_vlan of 0 and of OFP_VLAN_NONE both mean that the packet | |
2047 | * belongs to VLAN 0, so we should treat both cases identically. (In the | |
2048 | * former case, the packet has an 802.1Q header that specifies VLAN 0, | |
2049 | * presumably to allow a priority to be specified. In the latter case, the | |
2050 | * packet does not have any 802.1Q header.) */ | |
2051 | int vlan = ntohs(flow->dl_vlan); | |
2052 | if (vlan == OFP_VLAN_NONE) { | |
2053 | vlan = 0; | |
2054 | } | |
2055 | if (in_port->vlan >= 0) { | |
2056 | if (vlan) { | |
2057 | /* XXX support double tagging? */ | |
2058 | if (have_packet) { | |
2059 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2060 | VLOG_WARN_RL(&rl, "bridge %s: dropping VLAN %"PRIu16" tagged " | |
2061 | "packet received on port %s configured with " | |
2062 | "implicit VLAN %"PRIu16, | |
2063 | br->name, ntohs(flow->dl_vlan), | |
2064 | in_port->name, in_port->vlan); | |
2065 | } | |
2066 | return -1; | |
2067 | } | |
2068 | vlan = in_port->vlan; | |
2069 | } else { | |
2070 | if (!port_includes_vlan(in_port, vlan)) { | |
2071 | if (have_packet) { | |
2072 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2073 | VLOG_WARN_RL(&rl, "bridge %s: dropping VLAN %d tagged " | |
2074 | "packet received on port %s not configured for " | |
2075 | "trunking VLAN %d", | |
2076 | br->name, vlan, in_port->name, vlan); | |
2077 | } | |
2078 | return -1; | |
2079 | } | |
2080 | } | |
2081 | ||
2082 | return vlan; | |
2083 | } | |
2084 | ||
2085 | static void | |
2086 | update_learning_table(struct bridge *br, const flow_t *flow, int vlan, | |
2087 | struct port *in_port) | |
2088 | { | |
2089 | tag_type rev_tag = mac_learning_learn(br->ml, flow->dl_src, | |
2090 | vlan, in_port->port_idx); | |
2091 | if (rev_tag) { | |
2092 | /* The log messages here could actually be useful in debugging, | |
2093 | * so keep the rate limit relatively high. */ | |
2094 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, | |
2095 | 300); | |
2096 | VLOG_DBG_RL(&rl, "bridge %s: learned that "ETH_ADDR_FMT" is " | |
2097 | "on port %s in VLAN %d", | |
2098 | br->name, ETH_ADDR_ARGS(flow->dl_src), | |
2099 | in_port->name, vlan); | |
2100 | ofproto_revalidate(br->ofproto, rev_tag); | |
2101 | } | |
2102 | } | |
2103 | ||
064af421 | 2104 | static bool |
69d60f9f | 2105 | is_bcast_arp_reply(const flow_t *flow) |
064af421 | 2106 | { |
064af421 | 2107 | return (flow->dl_type == htons(ETH_TYPE_ARP) |
69d60f9f JG |
2108 | && flow->nw_proto == ARP_OP_REPLY |
2109 | && eth_addr_is_broadcast(flow->dl_dst)); | |
064af421 BP |
2110 | } |
2111 | ||
2112 | /* If the composed actions may be applied to any packet in the given 'flow', | |
2113 | * returns true. Otherwise, the actions should only be applied to 'packet', or | |
2114 | * not at all, if 'packet' was NULL. */ | |
2115 | static bool | |
2116 | process_flow(struct bridge *br, const flow_t *flow, | |
2117 | const struct ofpbuf *packet, struct odp_actions *actions, | |
6a07af36 | 2118 | tag_type *tags, uint16_t *nf_output_iface) |
064af421 BP |
2119 | { |
2120 | struct iface *in_iface; | |
2121 | struct port *in_port; | |
2122 | struct port *out_port = NULL; /* By default, drop the packet/flow. */ | |
2123 | int vlan; | |
93dfc067 | 2124 | int out_port_idx; |
064af421 BP |
2125 | |
2126 | /* Find the interface and port structure for the received packet. */ | |
2127 | in_iface = iface_from_dp_ifidx(br, flow->in_port); | |
2128 | if (!in_iface) { | |
2129 | /* No interface? Something fishy... */ | |
2130 | if (packet != NULL) { | |
2131 | /* Odd. A few possible reasons here: | |
2132 | * | |
2133 | * - We deleted an interface but there are still a few packets | |
2134 | * queued up from it. | |
2135 | * | |
2136 | * - Someone externally added an interface (e.g. with "ovs-dpctl | |
2137 | * add-if") that we don't know about. | |
2138 | * | |
2139 | * - Packet arrived on the local port but the local port is not | |
2140 | * one of our bridge ports. | |
2141 | */ | |
2142 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2143 | ||
2144 | VLOG_WARN_RL(&rl, "bridge %s: received packet on unknown " | |
2145 | "interface %"PRIu16, br->name, flow->in_port); | |
2146 | } | |
2147 | ||
2148 | /* Return without adding any actions, to drop packets on this flow. */ | |
2149 | return true; | |
2150 | } | |
2151 | in_port = in_iface->port; | |
e96a4d80 JG |
2152 | vlan = flow_get_vlan(br, flow, in_port, !!packet); |
2153 | if (vlan < 0) { | |
2154 | goto done; | |
064af421 BP |
2155 | } |
2156 | ||
064af421 BP |
2157 | /* Drop frames for reserved multicast addresses. */ |
2158 | if (eth_addr_is_reserved(flow->dl_dst)) { | |
2159 | goto done; | |
2160 | } | |
2161 | ||
2162 | /* Drop frames on ports reserved for mirroring. */ | |
2163 | if (in_port->is_mirror_output_port) { | |
2164 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2165 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port %s, " | |
2166 | "which is reserved exclusively for mirroring", | |
2167 | br->name, in_port->name); | |
2168 | goto done; | |
2169 | } | |
2170 | ||
3a55ef14 JG |
2171 | /* Packets received on bonds need special attention to avoid duplicates. */ |
2172 | if (in_port->n_ifaces > 1) { | |
2173 | int src_idx; | |
2174 | ||
2175 | if (eth_addr_is_multicast(flow->dl_dst)) { | |
2176 | *tags |= in_port->active_iface_tag; | |
2177 | if (in_port->active_iface != in_iface->port_ifidx) { | |
2178 | /* Drop all multicast packets on inactive slaves. */ | |
2179 | goto done; | |
c93b1d6a | 2180 | } |
064af421 | 2181 | } |
3a55ef14 JG |
2182 | |
2183 | /* Drop all packets for which we have learned a different input | |
2184 | * port, because we probably sent the packet on one slave and got | |
2185 | * it back on the other. Broadcast ARP replies are an exception | |
2186 | * to this rule: the host has moved to another switch. */ | |
2187 | src_idx = mac_learning_lookup(br->ml, flow->dl_src, vlan); | |
2188 | if (src_idx != -1 && src_idx != in_port->port_idx && | |
69d60f9f | 2189 | !is_bcast_arp_reply(flow)) { |
3a55ef14 JG |
2190 | goto done; |
2191 | } | |
064af421 BP |
2192 | } |
2193 | ||
2194 | /* MAC learning. */ | |
2195 | out_port = FLOOD_PORT; | |
93dfc067 JG |
2196 | /* Learn source MAC (but don't try to learn from revalidation). */ |
2197 | if (packet) { | |
e96a4d80 | 2198 | update_learning_table(br, flow, vlan, in_port); |
93dfc067 JG |
2199 | } |
2200 | ||
2201 | /* Determine output port. */ | |
2202 | out_port_idx = mac_learning_lookup_tag(br->ml, flow->dl_dst, vlan, | |
2203 | tags); | |
2204 | if (out_port_idx >= 0 && out_port_idx < br->n_ports) { | |
2205 | out_port = br->ports[out_port_idx]; | |
e96a4d80 | 2206 | } else if (!packet && !eth_addr_is_multicast(flow->dl_dst)) { |
93dfc067 | 2207 | /* If we are revalidating but don't have a learning entry then |
e96a4d80 JG |
2208 | * eject the flow. Installing a flow that floods packets opens |
2209 | * up a window of time where we could learn from a packet reflected | |
2210 | * on a bond and blackhole packets before the learning table is | |
2211 | * updated to reflect the correct port. */ | |
93dfc067 | 2212 | return false; |
064af421 BP |
2213 | } |
2214 | ||
ba54bf4f BP |
2215 | /* Don't send packets out their input ports. */ |
2216 | if (in_port == out_port) { | |
064af421 BP |
2217 | out_port = NULL; |
2218 | } | |
2219 | ||
2220 | done: | |
6a07af36 JG |
2221 | compose_actions(br, flow, vlan, in_port, out_port, tags, actions, |
2222 | nf_output_iface); | |
064af421 | 2223 | |
69d60f9f | 2224 | return true; |
064af421 BP |
2225 | } |
2226 | ||
2227 | /* Careful: 'opp' is in host byte order and opp->port_no is an OFP port | |
2228 | * number. */ | |
2229 | static void | |
2230 | bridge_port_changed_ofhook_cb(enum ofp_port_reason reason, | |
2231 | const struct ofp_phy_port *opp, | |
2232 | void *br_) | |
2233 | { | |
2234 | struct bridge *br = br_; | |
2235 | struct iface *iface; | |
2236 | struct port *port; | |
2237 | ||
2238 | iface = iface_from_dp_ifidx(br, ofp_port_to_odp_port(opp->port_no)); | |
2239 | if (!iface) { | |
2240 | return; | |
2241 | } | |
2242 | port = iface->port; | |
2243 | ||
2244 | if (reason == OFPPR_DELETE) { | |
2245 | VLOG_WARN("bridge %s: interface %s deleted unexpectedly", | |
2246 | br->name, iface->name); | |
2247 | iface_destroy(iface); | |
2248 | if (!port->n_ifaces) { | |
2249 | VLOG_WARN("bridge %s: port %s has no interfaces, dropping", | |
2250 | br->name, port->name); | |
2251 | port_destroy(port); | |
2252 | } | |
2253 | ||
2254 | bridge_flush(br); | |
2255 | } else { | |
064af421 BP |
2256 | if (port->n_ifaces > 1) { |
2257 | bool up = !(opp->state & OFPPS_LINK_DOWN); | |
2258 | bond_link_status_update(iface, up); | |
2259 | port_update_bond_compat(port); | |
2260 | } | |
2261 | } | |
2262 | } | |
2263 | ||
2264 | static bool | |
2265 | bridge_normal_ofhook_cb(const flow_t *flow, const struct ofpbuf *packet, | |
6a07af36 JG |
2266 | struct odp_actions *actions, tag_type *tags, |
2267 | uint16_t *nf_output_iface, void *br_) | |
064af421 BP |
2268 | { |
2269 | struct bridge *br = br_; | |
2270 | ||
064af421 | 2271 | COVERAGE_INC(bridge_process_flow); |
6a07af36 | 2272 | return process_flow(br, flow, packet, actions, tags, nf_output_iface); |
064af421 BP |
2273 | } |
2274 | ||
2275 | static void | |
2276 | bridge_account_flow_ofhook_cb(const flow_t *flow, | |
2277 | const union odp_action *actions, | |
2278 | size_t n_actions, unsigned long long int n_bytes, | |
2279 | void *br_) | |
2280 | { | |
2281 | struct bridge *br = br_; | |
e96a4d80 | 2282 | struct port *in_port; |
064af421 BP |
2283 | const union odp_action *a; |
2284 | ||
e96a4d80 JG |
2285 | /* Feed information from the active flows back into the learning table |
2286 | * to ensure that table is always in sync with what is actually flowing | |
2287 | * through the datapath. */ | |
2288 | in_port = port_from_dp_ifidx(br, flow->in_port); | |
f1bd68ab JG |
2289 | if (in_port) { |
2290 | int vlan = flow_get_vlan(br, flow, in_port, false); | |
2291 | if (vlan >= 0) { | |
2292 | update_learning_table(br, flow, vlan, in_port); | |
2293 | } | |
e96a4d80 JG |
2294 | } |
2295 | ||
064af421 BP |
2296 | if (!br->has_bonded_ports) { |
2297 | return; | |
2298 | } | |
2299 | ||
2300 | for (a = actions; a < &actions[n_actions]; a++) { | |
2301 | if (a->type == ODPAT_OUTPUT) { | |
e96a4d80 JG |
2302 | struct port *out_port = port_from_dp_ifidx(br, a->output.port); |
2303 | if (out_port && out_port->n_ifaces >= 2) { | |
2304 | struct bond_entry *e = lookup_bond_entry(out_port, | |
2305 | flow->dl_src); | |
064af421 BP |
2306 | e->tx_bytes += n_bytes; |
2307 | } | |
2308 | } | |
2309 | } | |
2310 | } | |
2311 | ||
2312 | static void | |
2313 | bridge_account_checkpoint_ofhook_cb(void *br_) | |
2314 | { | |
2315 | struct bridge *br = br_; | |
2316 | size_t i; | |
2317 | ||
2318 | if (!br->has_bonded_ports) { | |
2319 | return; | |
2320 | } | |
2321 | ||
2322 | /* The current ofproto implementation calls this callback at least once a | |
2323 | * second, so this timer implementation is sufficient. */ | |
2324 | if (time_msec() < br->bond_next_rebalance) { | |
2325 | return; | |
2326 | } | |
2327 | br->bond_next_rebalance = time_msec() + 10000; | |
2328 | ||
2329 | for (i = 0; i < br->n_ports; i++) { | |
2330 | struct port *port = br->ports[i]; | |
2331 | if (port->n_ifaces > 1) { | |
2332 | bond_rebalance_port(port); | |
2333 | } | |
2334 | } | |
2335 | } | |
2336 | ||
2337 | static struct ofhooks bridge_ofhooks = { | |
2338 | bridge_port_changed_ofhook_cb, | |
2339 | bridge_normal_ofhook_cb, | |
2340 | bridge_account_flow_ofhook_cb, | |
2341 | bridge_account_checkpoint_ofhook_cb, | |
2342 | }; | |
2343 | \f | |
2303f3b2 BP |
2344 | /* Bonding functions. */ |
2345 | ||
064af421 BP |
2346 | /* Statistics for a single interface on a bonded port, used for load-based |
2347 | * bond rebalancing. */ | |
2348 | struct slave_balance { | |
2349 | struct iface *iface; /* The interface. */ | |
2350 | uint64_t tx_bytes; /* Sum of hashes[*]->tx_bytes. */ | |
2351 | ||
2352 | /* All the "bond_entry"s that are assigned to this interface, in order of | |
2353 | * increasing tx_bytes. */ | |
2354 | struct bond_entry **hashes; | |
2355 | size_t n_hashes; | |
2356 | }; | |
2357 | ||
2358 | /* Sorts pointers to pointers to bond_entries in ascending order by the | |
2359 | * interface to which they are assigned, and within a single interface in | |
2360 | * ascending order of bytes transmitted. */ | |
2361 | static int | |
2362 | compare_bond_entries(const void *a_, const void *b_) | |
2363 | { | |
2364 | const struct bond_entry *const *ap = a_; | |
2365 | const struct bond_entry *const *bp = b_; | |
2366 | const struct bond_entry *a = *ap; | |
2367 | const struct bond_entry *b = *bp; | |
2368 | if (a->iface_idx != b->iface_idx) { | |
2369 | return a->iface_idx > b->iface_idx ? 1 : -1; | |
2370 | } else if (a->tx_bytes != b->tx_bytes) { | |
2371 | return a->tx_bytes > b->tx_bytes ? 1 : -1; | |
2372 | } else { | |
2373 | return 0; | |
2374 | } | |
2375 | } | |
2376 | ||
2377 | /* Sorts slave_balances so that enabled ports come first, and otherwise in | |
2378 | * *descending* order by number of bytes transmitted. */ | |
2379 | static int | |
2380 | compare_slave_balance(const void *a_, const void *b_) | |
2381 | { | |
2382 | const struct slave_balance *a = a_; | |
2383 | const struct slave_balance *b = b_; | |
2384 | if (a->iface->enabled != b->iface->enabled) { | |
2385 | return a->iface->enabled ? -1 : 1; | |
2386 | } else if (a->tx_bytes != b->tx_bytes) { | |
2387 | return a->tx_bytes > b->tx_bytes ? -1 : 1; | |
2388 | } else { | |
2389 | return 0; | |
2390 | } | |
2391 | } | |
2392 | ||
2393 | static void | |
2394 | swap_bals(struct slave_balance *a, struct slave_balance *b) | |
2395 | { | |
2396 | struct slave_balance tmp = *a; | |
2397 | *a = *b; | |
2398 | *b = tmp; | |
2399 | } | |
2400 | ||
2401 | /* Restores the 'n_bals' slave_balance structures in 'bals' to sorted order | |
2402 | * given that 'p' (and only 'p') might be in the wrong location. | |
2403 | * | |
2404 | * This function invalidates 'p', since it might now be in a different memory | |
2405 | * location. */ | |
2406 | static void | |
2407 | resort_bals(struct slave_balance *p, | |
2408 | struct slave_balance bals[], size_t n_bals) | |
2409 | { | |
2410 | if (n_bals > 1) { | |
2411 | for (; p > bals && p->tx_bytes > p[-1].tx_bytes; p--) { | |
2412 | swap_bals(p, p - 1); | |
2413 | } | |
2414 | for (; p < &bals[n_bals - 1] && p->tx_bytes < p[1].tx_bytes; p++) { | |
2415 | swap_bals(p, p + 1); | |
2416 | } | |
2417 | } | |
2418 | } | |
2419 | ||
2420 | static void | |
2421 | log_bals(const struct slave_balance *bals, size_t n_bals, struct port *port) | |
2422 | { | |
2423 | if (VLOG_IS_DBG_ENABLED()) { | |
2424 | struct ds ds = DS_EMPTY_INITIALIZER; | |
2425 | const struct slave_balance *b; | |
2426 | ||
2427 | for (b = bals; b < bals + n_bals; b++) { | |
2428 | size_t i; | |
2429 | ||
2430 | if (b > bals) { | |
2431 | ds_put_char(&ds, ','); | |
2432 | } | |
2433 | ds_put_format(&ds, " %s %"PRIu64"kB", | |
2434 | b->iface->name, b->tx_bytes / 1024); | |
2435 | ||
2436 | if (!b->iface->enabled) { | |
2437 | ds_put_cstr(&ds, " (disabled)"); | |
2438 | } | |
2439 | if (b->n_hashes > 0) { | |
2440 | ds_put_cstr(&ds, " ("); | |
2441 | for (i = 0; i < b->n_hashes; i++) { | |
2442 | const struct bond_entry *e = b->hashes[i]; | |
2443 | if (i > 0) { | |
2444 | ds_put_cstr(&ds, " + "); | |
2445 | } | |
2446 | ds_put_format(&ds, "h%td: %"PRIu64"kB", | |
2447 | e - port->bond_hash, e->tx_bytes / 1024); | |
2448 | } | |
2449 | ds_put_cstr(&ds, ")"); | |
2450 | } | |
2451 | } | |
2452 | VLOG_DBG("bond %s:%s", port->name, ds_cstr(&ds)); | |
2453 | ds_destroy(&ds); | |
2454 | } | |
2455 | } | |
2456 | ||
2457 | /* Shifts 'hash' from 'from' to 'to' within 'port'. */ | |
2458 | static void | |
2459 | bond_shift_load(struct slave_balance *from, struct slave_balance *to, | |
5422a9e1 | 2460 | int hash_idx) |
064af421 | 2461 | { |
5422a9e1 | 2462 | struct bond_entry *hash = from->hashes[hash_idx]; |
064af421 BP |
2463 | struct port *port = from->iface->port; |
2464 | uint64_t delta = hash->tx_bytes; | |
2465 | ||
2466 | VLOG_INFO("bond %s: shift %"PRIu64"kB of load (with hash %td) " | |
2467 | "from %s to %s (now carrying %"PRIu64"kB and " | |
2468 | "%"PRIu64"kB load, respectively)", | |
2469 | port->name, delta / 1024, hash - port->bond_hash, | |
2470 | from->iface->name, to->iface->name, | |
2471 | (from->tx_bytes - delta) / 1024, | |
2472 | (to->tx_bytes + delta) / 1024); | |
2473 | ||
2474 | /* Delete element from from->hashes. | |
2475 | * | |
2476 | * We don't bother to add the element to to->hashes because not only would | |
2477 | * it require more work, the only purpose it would be to allow that hash to | |
2478 | * be migrated to another slave in this rebalancing run, and there is no | |
2479 | * point in doing that. */ | |
5422a9e1 | 2480 | if (hash_idx == 0) { |
064af421 BP |
2481 | from->hashes++; |
2482 | } else { | |
5422a9e1 JG |
2483 | memmove(from->hashes + hash_idx, from->hashes + hash_idx + 1, |
2484 | (from->n_hashes - (hash_idx + 1)) * sizeof *from->hashes); | |
064af421 BP |
2485 | } |
2486 | from->n_hashes--; | |
2487 | ||
2488 | /* Shift load away from 'from' to 'to'. */ | |
2489 | from->tx_bytes -= delta; | |
2490 | to->tx_bytes += delta; | |
2491 | ||
2492 | /* Arrange for flows to be revalidated. */ | |
2493 | ofproto_revalidate(port->bridge->ofproto, hash->iface_tag); | |
2494 | hash->iface_idx = to->iface->port_ifidx; | |
2495 | hash->iface_tag = tag_create_random(); | |
064af421 BP |
2496 | } |
2497 | ||
2498 | static void | |
2499 | bond_rebalance_port(struct port *port) | |
2500 | { | |
2501 | struct slave_balance bals[DP_MAX_PORTS]; | |
2502 | size_t n_bals; | |
2503 | struct bond_entry *hashes[BOND_MASK + 1]; | |
2504 | struct slave_balance *b, *from, *to; | |
2505 | struct bond_entry *e; | |
2506 | size_t i; | |
2507 | ||
2508 | /* Sets up 'bals' to describe each of the port's interfaces, sorted in | |
2509 | * descending order of tx_bytes, so that bals[0] represents the most | |
2510 | * heavily loaded slave and bals[n_bals - 1] represents the least heavily | |
2511 | * loaded slave. | |
2512 | * | |
2513 | * The code is a bit tricky: to avoid dynamically allocating a 'hashes' | |
2514 | * array for each slave_balance structure, we sort our local array of | |
2515 | * hashes in order by slave, so that all of the hashes for a given slave | |
2516 | * become contiguous in memory, and then we point each 'hashes' members of | |
2517 | * a slave_balance structure to the start of a contiguous group. */ | |
2518 | n_bals = port->n_ifaces; | |
2519 | for (b = bals; b < &bals[n_bals]; b++) { | |
2520 | b->iface = port->ifaces[b - bals]; | |
2521 | b->tx_bytes = 0; | |
2522 | b->hashes = NULL; | |
2523 | b->n_hashes = 0; | |
2524 | } | |
2525 | for (i = 0; i <= BOND_MASK; i++) { | |
2526 | hashes[i] = &port->bond_hash[i]; | |
2527 | } | |
2528 | qsort(hashes, BOND_MASK + 1, sizeof *hashes, compare_bond_entries); | |
2529 | for (i = 0; i <= BOND_MASK; i++) { | |
2530 | e = hashes[i]; | |
2531 | if (e->iface_idx >= 0 && e->iface_idx < port->n_ifaces) { | |
2532 | b = &bals[e->iface_idx]; | |
2533 | b->tx_bytes += e->tx_bytes; | |
2534 | if (!b->hashes) { | |
2535 | b->hashes = &hashes[i]; | |
2536 | } | |
2537 | b->n_hashes++; | |
2538 | } | |
2539 | } | |
2540 | qsort(bals, n_bals, sizeof *bals, compare_slave_balance); | |
2541 | log_bals(bals, n_bals, port); | |
2542 | ||
2543 | /* Discard slaves that aren't enabled (which were sorted to the back of the | |
2544 | * array earlier). */ | |
2545 | while (!bals[n_bals - 1].iface->enabled) { | |
2546 | n_bals--; | |
2547 | if (!n_bals) { | |
2548 | return; | |
2549 | } | |
2550 | } | |
2551 | ||
2552 | /* Shift load from the most-loaded slaves to the least-loaded slaves. */ | |
2553 | to = &bals[n_bals - 1]; | |
2554 | for (from = bals; from < to; ) { | |
2555 | uint64_t overload = from->tx_bytes - to->tx_bytes; | |
2556 | if (overload < to->tx_bytes >> 5 || overload < 100000) { | |
2557 | /* The extra load on 'from' (and all less-loaded slaves), compared | |
2558 | * to that of 'to' (the least-loaded slave), is less than ~3%, or | |
2559 | * it is less than ~1Mbps. No point in rebalancing. */ | |
2560 | break; | |
2561 | } else if (from->n_hashes == 1) { | |
2562 | /* 'from' only carries a single MAC hash, so we can't shift any | |
2563 | * load away from it, even though we want to. */ | |
2564 | from++; | |
2565 | } else { | |
2566 | /* 'from' is carrying significantly more load than 'to', and that | |
2567 | * load is split across at least two different hashes. Pick a hash | |
2568 | * to migrate to 'to' (the least-loaded slave), given that doing so | |
5422a9e1 JG |
2569 | * must decrease the ratio of the load on the two slaves by at |
2570 | * least 0.1. | |
064af421 BP |
2571 | * |
2572 | * The sort order we use means that we prefer to shift away the | |
2573 | * smallest hashes instead of the biggest ones. There is little | |
2574 | * reason behind this decision; we could use the opposite sort | |
2575 | * order to shift away big hashes ahead of small ones. */ | |
2576 | size_t i; | |
5422a9e1 | 2577 | bool order_swapped; |
064af421 BP |
2578 | |
2579 | for (i = 0; i < from->n_hashes; i++) { | |
5422a9e1 | 2580 | double old_ratio, new_ratio; |
064af421 | 2581 | uint64_t delta = from->hashes[i]->tx_bytes; |
5422a9e1 JG |
2582 | |
2583 | if (delta == 0 || from->tx_bytes - delta == 0) { | |
2584 | /* Pointless move. */ | |
2585 | continue; | |
2586 | } | |
2587 | ||
2588 | order_swapped = from->tx_bytes - delta < to->tx_bytes + delta; | |
2589 | ||
2590 | if (to->tx_bytes == 0) { | |
2591 | /* Nothing on the new slave, move it. */ | |
2592 | break; | |
2593 | } | |
2594 | ||
2595 | old_ratio = (double)from->tx_bytes / to->tx_bytes; | |
2596 | new_ratio = (double)(from->tx_bytes - delta) / | |
2597 | (to->tx_bytes + delta); | |
2598 | ||
2599 | if (new_ratio == 0) { | |
2600 | /* Should already be covered but check to prevent division | |
2601 | * by zero. */ | |
2602 | continue; | |
2603 | } | |
2604 | ||
2605 | if (new_ratio < 1) { | |
2606 | new_ratio = 1 / new_ratio; | |
2607 | } | |
2608 | ||
2609 | if (old_ratio - new_ratio > 0.1) { | |
2610 | /* Would decrease the ratio, move it. */ | |
064af421 BP |
2611 | break; |
2612 | } | |
2613 | } | |
2614 | if (i < from->n_hashes) { | |
5422a9e1 JG |
2615 | bond_shift_load(from, to, i); |
2616 | port->bond_compat_is_stale = true; | |
2617 | ||
2618 | /* If the result of the migration changed the relative order of | |
2619 | * 'from' and 'to' swap them back to maintain invariants. */ | |
2620 | if (order_swapped) { | |
2621 | swap_bals(from, to); | |
2622 | } | |
064af421 BP |
2623 | |
2624 | /* Re-sort 'bals'. Note that this may make 'from' and 'to' | |
2625 | * point to different slave_balance structures. It is only | |
2626 | * valid to do these two operations in a row at all because we | |
2627 | * know that 'from' will not move past 'to' and vice versa. */ | |
2628 | resort_bals(from, bals, n_bals); | |
2629 | resort_bals(to, bals, n_bals); | |
2630 | } else { | |
2631 | from++; | |
2632 | } | |
2633 | } | |
2634 | } | |
2635 | ||
2636 | /* Implement exponentially weighted moving average. A weight of 1/2 causes | |
2637 | * historical data to decay to <1% in 7 rebalancing runs. */ | |
2638 | for (e = &port->bond_hash[0]; e <= &port->bond_hash[BOND_MASK]; e++) { | |
2639 | e->tx_bytes /= 2; | |
2640 | } | |
2641 | } | |
2303f3b2 BP |
2642 | |
2643 | static void | |
2644 | bond_send_learning_packets(struct port *port) | |
2645 | { | |
2646 | struct bridge *br = port->bridge; | |
2647 | struct mac_entry *e; | |
2648 | struct ofpbuf packet; | |
2649 | int error, n_packets, n_errors; | |
2650 | ||
93dfc067 | 2651 | if (!port->n_ifaces || port->active_iface < 0) { |
2303f3b2 BP |
2652 | return; |
2653 | } | |
2654 | ||
2655 | ofpbuf_init(&packet, 128); | |
2656 | error = n_packets = n_errors = 0; | |
2657 | LIST_FOR_EACH (e, struct mac_entry, lru_node, &br->ml->lrus) { | |
2303f3b2 | 2658 | union ofp_action actions[2], *a; |
2303f3b2 BP |
2659 | uint16_t dp_ifidx; |
2660 | tag_type tags = 0; | |
2661 | flow_t flow; | |
2662 | int retval; | |
2663 | ||
2664 | if (e->port == port->port_idx | |
2665 | || !choose_output_iface(port, e->mac, &dp_ifidx, &tags)) { | |
2666 | continue; | |
2667 | } | |
2668 | ||
2303f3b2 BP |
2669 | /* Compose actions. */ |
2670 | memset(actions, 0, sizeof actions); | |
2671 | a = actions; | |
2672 | if (e->vlan) { | |
2673 | a->vlan_vid.type = htons(OFPAT_SET_VLAN_VID); | |
2674 | a->vlan_vid.len = htons(sizeof *a); | |
2675 | a->vlan_vid.vlan_vid = htons(e->vlan); | |
2676 | a++; | |
2677 | } | |
2678 | a->output.type = htons(OFPAT_OUTPUT); | |
2679 | a->output.len = htons(sizeof *a); | |
2680 | a->output.port = htons(odp_port_to_ofp_port(dp_ifidx)); | |
2681 | a++; | |
2682 | ||
2683 | /* Send packet. */ | |
2684 | n_packets++; | |
b9e8b45a BP |
2685 | compose_benign_packet(&packet, "Open vSwitch Bond Failover", 0xf177, |
2686 | e->mac); | |
2303f3b2 BP |
2687 | flow_extract(&packet, ODPP_NONE, &flow); |
2688 | retval = ofproto_send_packet(br->ofproto, &flow, actions, a - actions, | |
2689 | &packet); | |
2690 | if (retval) { | |
2691 | error = retval; | |
2692 | n_errors++; | |
2693 | } | |
2694 | } | |
2695 | ofpbuf_uninit(&packet); | |
2696 | ||
2697 | if (n_errors) { | |
2698 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2699 | VLOG_WARN_RL(&rl, "bond %s: %d errors sending %d gratuitous learning " | |
2700 | "packets, last error was: %s", | |
2701 | port->name, n_errors, n_packets, strerror(error)); | |
2702 | } else { | |
2703 | VLOG_DBG("bond %s: sent %d gratuitous learning packets", | |
2704 | port->name, n_packets); | |
2705 | } | |
2706 | } | |
064af421 | 2707 | \f |
da285df4 BP |
2708 | /* Bonding unixctl user interface functions. */ |
2709 | ||
2710 | static void | |
8ca79daa BP |
2711 | bond_unixctl_list(struct unixctl_conn *conn, |
2712 | const char *args UNUSED, void *aux UNUSED) | |
da285df4 BP |
2713 | { |
2714 | struct ds ds = DS_EMPTY_INITIALIZER; | |
2715 | const struct bridge *br; | |
2716 | ||
2717 | ds_put_cstr(&ds, "bridge\tbond\tslaves\n"); | |
2718 | ||
2719 | LIST_FOR_EACH (br, struct bridge, node, &all_bridges) { | |
2720 | size_t i; | |
2721 | ||
2722 | for (i = 0; i < br->n_ports; i++) { | |
2723 | const struct port *port = br->ports[i]; | |
2724 | if (port->n_ifaces > 1) { | |
2725 | size_t j; | |
2726 | ||
2727 | ds_put_format(&ds, "%s\t%s\t", br->name, port->name); | |
2728 | for (j = 0; j < port->n_ifaces; j++) { | |
2729 | const struct iface *iface = port->ifaces[j]; | |
2730 | if (j) { | |
2731 | ds_put_cstr(&ds, ", "); | |
2732 | } | |
2733 | ds_put_cstr(&ds, iface->name); | |
2734 | } | |
2735 | ds_put_char(&ds, '\n'); | |
2736 | } | |
2737 | } | |
2738 | } | |
2739 | unixctl_command_reply(conn, 200, ds_cstr(&ds)); | |
2740 | ds_destroy(&ds); | |
2741 | } | |
2742 | ||
2743 | static struct port * | |
2744 | bond_find(const char *name) | |
2745 | { | |
2746 | const struct bridge *br; | |
2747 | ||
2748 | LIST_FOR_EACH (br, struct bridge, node, &all_bridges) { | |
2749 | size_t i; | |
2750 | ||
2751 | for (i = 0; i < br->n_ports; i++) { | |
2752 | struct port *port = br->ports[i]; | |
2753 | if (!strcmp(port->name, name) && port->n_ifaces > 1) { | |
2754 | return port; | |
2755 | } | |
2756 | } | |
2757 | } | |
2758 | return NULL; | |
2759 | } | |
2760 | ||
2761 | static void | |
8ca79daa BP |
2762 | bond_unixctl_show(struct unixctl_conn *conn, |
2763 | const char *args, void *aux UNUSED) | |
da285df4 BP |
2764 | { |
2765 | struct ds ds = DS_EMPTY_INITIALIZER; | |
2766 | const struct port *port; | |
2767 | size_t j; | |
2768 | ||
2769 | port = bond_find(args); | |
2770 | if (!port) { | |
2771 | unixctl_command_reply(conn, 501, "no such bond"); | |
2772 | return; | |
2773 | } | |
2774 | ||
2775 | ds_put_format(&ds, "updelay: %d ms\n", port->updelay); | |
2776 | ds_put_format(&ds, "downdelay: %d ms\n", port->downdelay); | |
2777 | ds_put_format(&ds, "next rebalance: %lld ms\n", | |
2778 | port->bridge->bond_next_rebalance - time_msec()); | |
2779 | for (j = 0; j < port->n_ifaces; j++) { | |
2780 | const struct iface *iface = port->ifaces[j]; | |
2781 | struct bond_entry *be; | |
2782 | ||
2783 | /* Basic info. */ | |
2784 | ds_put_format(&ds, "slave %s: %s\n", | |
2785 | iface->name, iface->enabled ? "enabled" : "disabled"); | |
2786 | if (j == port->active_iface) { | |
2787 | ds_put_cstr(&ds, "\tactive slave\n"); | |
2788 | } | |
2789 | if (iface->delay_expires != LLONG_MAX) { | |
2790 | ds_put_format(&ds, "\t%s expires in %lld ms\n", | |
2791 | iface->enabled ? "downdelay" : "updelay", | |
2792 | iface->delay_expires - time_msec()); | |
2793 | } | |
2794 | ||
2795 | /* Hashes. */ | |
2796 | for (be = port->bond_hash; be <= &port->bond_hash[BOND_MASK]; be++) { | |
2797 | int hash = be - port->bond_hash; | |
2798 | struct mac_entry *me; | |
2799 | ||
2800 | if (be->iface_idx != j) { | |
2801 | continue; | |
2802 | } | |
2803 | ||
2886875a | 2804 | ds_put_format(&ds, "\thash %d: %"PRIu64" kB load\n", |
da285df4 BP |
2805 | hash, be->tx_bytes / 1024); |
2806 | ||
2807 | /* MACs. */ | |
da285df4 BP |
2808 | LIST_FOR_EACH (me, struct mac_entry, lru_node, |
2809 | &port->bridge->ml->lrus) { | |
2810 | uint16_t dp_ifidx; | |
2811 | tag_type tags = 0; | |
2812 | if (bond_hash(me->mac) == hash | |
2813 | && me->port != port->port_idx | |
2814 | && choose_output_iface(port, me->mac, &dp_ifidx, &tags) | |
2815 | && dp_ifidx == iface->dp_ifidx) | |
2816 | { | |
2817 | ds_put_format(&ds, "\t\t"ETH_ADDR_FMT"\n", | |
2818 | ETH_ADDR_ARGS(me->mac)); | |
2819 | } | |
2820 | } | |
2821 | } | |
2822 | } | |
2823 | unixctl_command_reply(conn, 200, ds_cstr(&ds)); | |
2824 | ds_destroy(&ds); | |
2825 | } | |
2826 | ||
2827 | static void | |
8ca79daa BP |
2828 | bond_unixctl_migrate(struct unixctl_conn *conn, const char *args_, |
2829 | void *aux UNUSED) | |
da285df4 BP |
2830 | { |
2831 | char *args = (char *) args_; | |
2832 | char *save_ptr = NULL; | |
2833 | char *bond_s, *hash_s, *slave_s; | |
2834 | uint8_t mac[ETH_ADDR_LEN]; | |
2835 | struct port *port; | |
2836 | struct iface *iface; | |
2837 | struct bond_entry *entry; | |
2838 | int hash; | |
2839 | ||
2840 | bond_s = strtok_r(args, " ", &save_ptr); | |
2841 | hash_s = strtok_r(NULL, " ", &save_ptr); | |
2842 | slave_s = strtok_r(NULL, " ", &save_ptr); | |
2843 | if (!slave_s) { | |
2844 | unixctl_command_reply(conn, 501, | |
2845 | "usage: bond/migrate BOND HASH SLAVE"); | |
2846 | return; | |
2847 | } | |
2848 | ||
2849 | port = bond_find(bond_s); | |
2850 | if (!port) { | |
2851 | unixctl_command_reply(conn, 501, "no such bond"); | |
2852 | return; | |
2853 | } | |
2854 | ||
eaa71334 BP |
2855 | if (sscanf(hash_s, ETH_ADDR_SCAN_FMT, ETH_ADDR_SCAN_ARGS(mac)) |
2856 | == ETH_ADDR_SCAN_COUNT) { | |
da285df4 BP |
2857 | hash = bond_hash(mac); |
2858 | } else if (strspn(hash_s, "0123456789") == strlen(hash_s)) { | |
2859 | hash = atoi(hash_s) & BOND_MASK; | |
2860 | } else { | |
2861 | unixctl_command_reply(conn, 501, "bad hash"); | |
2862 | return; | |
2863 | } | |
2864 | ||
2865 | iface = port_lookup_iface(port, slave_s); | |
2866 | if (!iface) { | |
2867 | unixctl_command_reply(conn, 501, "no such slave"); | |
2868 | return; | |
2869 | } | |
2870 | ||
2871 | if (!iface->enabled) { | |
2872 | unixctl_command_reply(conn, 501, "cannot migrate to disabled slave"); | |
2873 | return; | |
2874 | } | |
2875 | ||
2876 | entry = &port->bond_hash[hash]; | |
2877 | ofproto_revalidate(port->bridge->ofproto, entry->iface_tag); | |
2878 | entry->iface_idx = iface->port_ifidx; | |
2879 | entry->iface_tag = tag_create_random(); | |
85c74638 | 2880 | port->bond_compat_is_stale = true; |
da285df4 BP |
2881 | unixctl_command_reply(conn, 200, "migrated"); |
2882 | } | |
2883 | ||
2884 | static void | |
8ca79daa BP |
2885 | bond_unixctl_set_active_slave(struct unixctl_conn *conn, const char *args_, |
2886 | void *aux UNUSED) | |
da285df4 BP |
2887 | { |
2888 | char *args = (char *) args_; | |
2889 | char *save_ptr = NULL; | |
2890 | char *bond_s, *slave_s; | |
2891 | struct port *port; | |
2892 | struct iface *iface; | |
2893 | ||
2894 | bond_s = strtok_r(args, " ", &save_ptr); | |
2895 | slave_s = strtok_r(NULL, " ", &save_ptr); | |
2896 | if (!slave_s) { | |
2897 | unixctl_command_reply(conn, 501, | |
2898 | "usage: bond/set-active-slave BOND SLAVE"); | |
2899 | return; | |
2900 | } | |
2901 | ||
2902 | port = bond_find(bond_s); | |
2903 | if (!port) { | |
2904 | unixctl_command_reply(conn, 501, "no such bond"); | |
2905 | return; | |
2906 | } | |
2907 | ||
2908 | iface = port_lookup_iface(port, slave_s); | |
2909 | if (!iface) { | |
2910 | unixctl_command_reply(conn, 501, "no such slave"); | |
2911 | return; | |
2912 | } | |
2913 | ||
2914 | if (!iface->enabled) { | |
2915 | unixctl_command_reply(conn, 501, "cannot make disabled slave active"); | |
2916 | return; | |
2917 | } | |
2918 | ||
2919 | if (port->active_iface != iface->port_ifidx) { | |
2920 | ofproto_revalidate(port->bridge->ofproto, port->active_iface_tag); | |
2921 | port->active_iface = iface->port_ifidx; | |
2922 | port->active_iface_tag = tag_create_random(); | |
2923 | VLOG_INFO("port %s: active interface is now %s", | |
2924 | port->name, iface->name); | |
2925 | bond_send_learning_packets(port); | |
2926 | unixctl_command_reply(conn, 200, "done"); | |
2927 | } else { | |
2928 | unixctl_command_reply(conn, 200, "no change"); | |
2929 | } | |
2930 | } | |
2931 | ||
2932 | static void | |
2933 | enable_slave(struct unixctl_conn *conn, const char *args_, bool enable) | |
2934 | { | |
2935 | char *args = (char *) args_; | |
2936 | char *save_ptr = NULL; | |
2937 | char *bond_s, *slave_s; | |
2938 | struct port *port; | |
2939 | struct iface *iface; | |
2940 | ||
2941 | bond_s = strtok_r(args, " ", &save_ptr); | |
2942 | slave_s = strtok_r(NULL, " ", &save_ptr); | |
2943 | if (!slave_s) { | |
2944 | unixctl_command_reply(conn, 501, | |
2945 | "usage: bond/enable/disable-slave BOND SLAVE"); | |
2946 | return; | |
2947 | } | |
2948 | ||
2949 | port = bond_find(bond_s); | |
2950 | if (!port) { | |
2951 | unixctl_command_reply(conn, 501, "no such bond"); | |
2952 | return; | |
2953 | } | |
2954 | ||
2955 | iface = port_lookup_iface(port, slave_s); | |
2956 | if (!iface) { | |
2957 | unixctl_command_reply(conn, 501, "no such slave"); | |
2958 | return; | |
2959 | } | |
2960 | ||
2961 | bond_enable_slave(iface, enable); | |
2962 | unixctl_command_reply(conn, 501, enable ? "enabled" : "disabled"); | |
2963 | } | |
2964 | ||
2965 | static void | |
8ca79daa BP |
2966 | bond_unixctl_enable_slave(struct unixctl_conn *conn, const char *args, |
2967 | void *aux UNUSED) | |
da285df4 BP |
2968 | { |
2969 | enable_slave(conn, args, true); | |
2970 | } | |
2971 | ||
2972 | static void | |
8ca79daa BP |
2973 | bond_unixctl_disable_slave(struct unixctl_conn *conn, const char *args, |
2974 | void *aux UNUSED) | |
da285df4 BP |
2975 | { |
2976 | enable_slave(conn, args, false); | |
2977 | } | |
2978 | ||
e0644b61 | 2979 | static void |
8ca79daa BP |
2980 | bond_unixctl_hash(struct unixctl_conn *conn, const char *args, |
2981 | void *aux UNUSED) | |
e0644b61 IC |
2982 | { |
2983 | uint8_t mac[ETH_ADDR_LEN]; | |
2984 | uint8_t hash; | |
2985 | char *hash_cstr; | |
2986 | ||
2987 | if (sscanf(args, ETH_ADDR_SCAN_FMT, ETH_ADDR_SCAN_ARGS(mac)) | |
2988 | == ETH_ADDR_SCAN_COUNT) { | |
2989 | hash = bond_hash(mac); | |
2990 | ||
2991 | hash_cstr = xasprintf("%u", hash); | |
2992 | unixctl_command_reply(conn, 200, hash_cstr); | |
2993 | free(hash_cstr); | |
2994 | } else { | |
2995 | unixctl_command_reply(conn, 501, "invalid mac"); | |
2996 | } | |
2997 | } | |
2998 | ||
da285df4 BP |
2999 | static void |
3000 | bond_init(void) | |
3001 | { | |
8ca79daa BP |
3002 | unixctl_command_register("bond/list", bond_unixctl_list, NULL); |
3003 | unixctl_command_register("bond/show", bond_unixctl_show, NULL); | |
3004 | unixctl_command_register("bond/migrate", bond_unixctl_migrate, NULL); | |
da285df4 | 3005 | unixctl_command_register("bond/set-active-slave", |
8ca79daa BP |
3006 | bond_unixctl_set_active_slave, NULL); |
3007 | unixctl_command_register("bond/enable-slave", bond_unixctl_enable_slave, | |
3008 | NULL); | |
3009 | unixctl_command_register("bond/disable-slave", bond_unixctl_disable_slave, | |
3010 | NULL); | |
3011 | unixctl_command_register("bond/hash", bond_unixctl_hash, NULL); | |
da285df4 BP |
3012 | } |
3013 | \f | |
064af421 BP |
3014 | /* Port functions. */ |
3015 | ||
76343538 | 3016 | static struct port * |
064af421 BP |
3017 | port_create(struct bridge *br, const char *name) |
3018 | { | |
3019 | struct port *port; | |
3020 | ||
ec6fde61 | 3021 | port = xzalloc(sizeof *port); |
064af421 BP |
3022 | port->bridge = br; |
3023 | port->port_idx = br->n_ports; | |
3024 | port->vlan = -1; | |
3025 | port->trunks = NULL; | |
3026 | port->name = xstrdup(name); | |
3027 | port->active_iface = -1; | |
064af421 BP |
3028 | |
3029 | if (br->n_ports >= br->allocated_ports) { | |
3030 | br->ports = x2nrealloc(br->ports, &br->allocated_ports, | |
3031 | sizeof *br->ports); | |
3032 | } | |
3033 | br->ports[br->n_ports++] = port; | |
3034 | ||
3035 | VLOG_INFO("created port %s on bridge %s", port->name, br->name); | |
3036 | bridge_flush(br); | |
76343538 BP |
3037 | |
3038 | return port; | |
064af421 BP |
3039 | } |
3040 | ||
3041 | static void | |
76343538 | 3042 | port_reconfigure(struct port *port, const struct ovsrec_port *cfg) |
064af421 | 3043 | { |
76343538 BP |
3044 | struct shash old_ifaces, new_ifaces; |
3045 | struct shash_node *node; | |
064af421 BP |
3046 | unsigned long *trunks; |
3047 | int vlan; | |
3048 | size_t i; | |
3049 | ||
76343538 BP |
3050 | port->cfg = cfg; |
3051 | ||
064af421 | 3052 | /* Collect old and new interfaces. */ |
76343538 BP |
3053 | shash_init(&old_ifaces); |
3054 | shash_init(&new_ifaces); | |
064af421 | 3055 | for (i = 0; i < port->n_ifaces; i++) { |
76343538 | 3056 | shash_add(&old_ifaces, port->ifaces[i]->name, port->ifaces[i]); |
064af421 | 3057 | } |
76343538 BP |
3058 | for (i = 0; i < cfg->n_interfaces; i++) { |
3059 | const char *name = cfg->interfaces[i]->name; | |
3060 | if (!shash_add_once(&new_ifaces, name, cfg->interfaces[i])) { | |
3061 | VLOG_WARN("port %s: %s specified twice as port interface", | |
3062 | port->name, name); | |
064af421 | 3063 | } |
76343538 BP |
3064 | } |
3065 | port->updelay = cfg->bond_updelay; | |
3066 | if (port->updelay < 0) { | |
3067 | port->updelay = 0; | |
3068 | } | |
3069 | port->updelay = cfg->bond_downdelay; | |
3070 | if (port->downdelay < 0) { | |
3071 | port->downdelay = 0; | |
064af421 BP |
3072 | } |
3073 | ||
3074 | /* Get rid of deleted interfaces and add new interfaces. */ | |
76343538 BP |
3075 | SHASH_FOR_EACH (node, &old_ifaces) { |
3076 | if (!shash_find(&new_ifaces, node->name)) { | |
3077 | iface_destroy(node->data); | |
064af421 BP |
3078 | } |
3079 | } | |
76343538 BP |
3080 | SHASH_FOR_EACH (node, &new_ifaces) { |
3081 | const struct ovsrec_interface *if_cfg = node->data; | |
76343538 BP |
3082 | struct iface *iface; |
3083 | ||
a740f0de | 3084 | iface = shash_find_data(&old_ifaces, if_cfg->name); |
76343538 | 3085 | if (!iface) { |
5fbb4e18 | 3086 | iface_create(port, if_cfg); |
149f577a JG |
3087 | } else { |
3088 | iface->cfg = if_cfg; | |
064af421 BP |
3089 | } |
3090 | } | |
3091 | ||
3092 | /* Get VLAN tag. */ | |
3093 | vlan = -1; | |
76343538 BP |
3094 | if (cfg->tag) { |
3095 | if (port->n_ifaces < 2) { | |
3096 | vlan = *cfg->tag; | |
064af421 BP |
3097 | if (vlan >= 0 && vlan <= 4095) { |
3098 | VLOG_DBG("port %s: assigning VLAN tag %d", port->name, vlan); | |
76343538 BP |
3099 | } else { |
3100 | vlan = -1; | |
064af421 BP |
3101 | } |
3102 | } else { | |
3103 | /* It's possible that bonded, VLAN-tagged ports make sense. Maybe | |
3104 | * they even work as-is. But they have not been tested. */ | |
3105 | VLOG_WARN("port %s: VLAN tags not supported on bonded ports", | |
3106 | port->name); | |
3107 | } | |
3108 | } | |
3109 | if (port->vlan != vlan) { | |
3110 | port->vlan = vlan; | |
3111 | bridge_flush(port->bridge); | |
3112 | } | |
3113 | ||
3114 | /* Get trunked VLANs. */ | |
3115 | trunks = NULL; | |
3116 | if (vlan < 0) { | |
76343538 | 3117 | size_t n_errors; |
064af421 BP |
3118 | size_t i; |
3119 | ||
3120 | trunks = bitmap_allocate(4096); | |
064af421 | 3121 | n_errors = 0; |
76343538 BP |
3122 | for (i = 0; i < cfg->n_trunks; i++) { |
3123 | int trunk = cfg->trunks[i]; | |
064af421 BP |
3124 | if (trunk >= 0) { |
3125 | bitmap_set1(trunks, trunk); | |
3126 | } else { | |
3127 | n_errors++; | |
3128 | } | |
3129 | } | |
3130 | if (n_errors) { | |
3131 | VLOG_ERR("port %s: invalid values for %zu trunk VLANs", | |
76343538 | 3132 | port->name, cfg->n_trunks); |
064af421 | 3133 | } |
76343538 | 3134 | if (n_errors == cfg->n_trunks) { |
064af421 BP |
3135 | if (n_errors) { |
3136 | VLOG_ERR("port %s: no valid trunks, trunking all VLANs", | |
3137 | port->name); | |
3138 | } | |
3139 | bitmap_set_multiple(trunks, 0, 4096, 1); | |
3140 | } | |
3141 | } else { | |
76343538 BP |
3142 | if (cfg->n_trunks) { |
3143 | VLOG_ERR("port %s: ignoring trunks in favor of implicit vlan", | |
3144 | port->name); | |
064af421 BP |
3145 | } |
3146 | } | |
3147 | if (trunks == NULL | |
3148 | ? port->trunks != NULL | |
3149 | : port->trunks == NULL || !bitmap_equal(trunks, port->trunks, 4096)) { | |
3150 | bridge_flush(port->bridge); | |
3151 | } | |
3152 | bitmap_free(port->trunks); | |
3153 | port->trunks = trunks; | |
3154 | ||
76343538 BP |
3155 | shash_destroy(&old_ifaces); |
3156 | shash_destroy(&new_ifaces); | |
064af421 BP |
3157 | } |
3158 | ||
3159 | static void | |
3160 | port_destroy(struct port *port) | |
3161 | { | |
3162 | if (port) { | |
3163 | struct bridge *br = port->bridge; | |
3164 | struct port *del; | |
37e7f427 | 3165 | int i; |
064af421 BP |
3166 | |
3167 | proc_net_compat_update_vlan(port->name, NULL, 0); | |
85c74638 | 3168 | proc_net_compat_update_bond(port->name, NULL); |
064af421 BP |
3169 | |
3170 | for (i = 0; i < MAX_MIRRORS; i++) { | |
3171 | struct mirror *m = br->mirrors[i]; | |
3172 | if (m && m->out_port == port) { | |
3173 | mirror_destroy(m); | |
3174 | } | |
3175 | } | |
3176 | ||
3177 | while (port->n_ifaces > 0) { | |
3178 | iface_destroy(port->ifaces[port->n_ifaces - 1]); | |
3179 | } | |
3180 | ||
3181 | del = br->ports[port->port_idx] = br->ports[--br->n_ports]; | |
3182 | del->port_idx = port->port_idx; | |
3183 | ||
3184 | free(port->ifaces); | |
3185 | bitmap_free(port->trunks); | |
3186 | free(port->name); | |
3187 | free(port); | |
3188 | bridge_flush(br); | |
3189 | } | |
3190 | } | |
3191 | ||
3192 | static struct port * | |
3193 | port_from_dp_ifidx(const struct bridge *br, uint16_t dp_ifidx) | |
3194 | { | |
3195 | struct iface *iface = iface_from_dp_ifidx(br, dp_ifidx); | |
3196 | return iface ? iface->port : NULL; | |
3197 | } | |
3198 | ||
3199 | static struct port * | |
3200 | port_lookup(const struct bridge *br, const char *name) | |
3201 | { | |
3202 | size_t i; | |
3203 | ||
3204 | for (i = 0; i < br->n_ports; i++) { | |
3205 | struct port *port = br->ports[i]; | |
3206 | if (!strcmp(port->name, name)) { | |
3207 | return port; | |
3208 | } | |
3209 | } | |
3210 | return NULL; | |
3211 | } | |
3212 | ||
da285df4 BP |
3213 | static struct iface * |
3214 | port_lookup_iface(const struct port *port, const char *name) | |
3215 | { | |
3216 | size_t j; | |
3217 | ||
3218 | for (j = 0; j < port->n_ifaces; j++) { | |
3219 | struct iface *iface = port->ifaces[j]; | |
3220 | if (!strcmp(iface->name, name)) { | |
3221 | return iface; | |
3222 | } | |
3223 | } | |
3224 | return NULL; | |
3225 | } | |
3226 | ||
064af421 BP |
3227 | static void |
3228 | port_update_bonding(struct port *port) | |
3229 | { | |
3230 | if (port->n_ifaces < 2) { | |
3231 | /* Not a bonded port. */ | |
3232 | if (port->bond_hash) { | |
3233 | free(port->bond_hash); | |
3234 | port->bond_hash = NULL; | |
85c74638 | 3235 | port->bond_compat_is_stale = true; |
76343538 | 3236 | port->bond_fake_iface = false; |
064af421 BP |
3237 | } |
3238 | } else { | |
3239 | if (!port->bond_hash) { | |
3240 | size_t i; | |
3241 | ||
3242 | port->bond_hash = xcalloc(BOND_MASK + 1, sizeof *port->bond_hash); | |
3243 | for (i = 0; i <= BOND_MASK; i++) { | |
3244 | struct bond_entry *e = &port->bond_hash[i]; | |
3245 | e->iface_idx = -1; | |
3246 | e->tx_bytes = 0; | |
3247 | } | |
3248 | port->no_ifaces_tag = tag_create_random(); | |
3249 | bond_choose_active_iface(port); | |
3250 | } | |
85c74638 | 3251 | port->bond_compat_is_stale = true; |
76343538 | 3252 | port->bond_fake_iface = port->cfg->bond_fake_iface; |
064af421 BP |
3253 | } |
3254 | } | |
3255 | ||
3256 | static void | |
3257 | port_update_bond_compat(struct port *port) | |
3258 | { | |
2aebae83 | 3259 | struct compat_bond_hash compat_hashes[BOND_MASK + 1]; |
064af421 BP |
3260 | struct compat_bond bond; |
3261 | size_t i; | |
3262 | ||
3263 | if (port->n_ifaces < 2) { | |
85c74638 | 3264 | proc_net_compat_update_bond(port->name, NULL); |
064af421 BP |
3265 | return; |
3266 | } | |
3267 | ||
3268 | bond.up = false; | |
3269 | bond.updelay = port->updelay; | |
3270 | bond.downdelay = port->downdelay; | |
2aebae83 BP |
3271 | |
3272 | bond.n_hashes = 0; | |
3273 | bond.hashes = compat_hashes; | |
3274 | if (port->bond_hash) { | |
3275 | const struct bond_entry *e; | |
3276 | for (e = port->bond_hash; e <= &port->bond_hash[BOND_MASK]; e++) { | |
3277 | if (e->iface_idx >= 0 && e->iface_idx < port->n_ifaces) { | |
3278 | struct compat_bond_hash *cbh = &bond.hashes[bond.n_hashes++]; | |
3279 | cbh->hash = e - port->bond_hash; | |
3280 | cbh->netdev_name = port->ifaces[e->iface_idx]->name; | |
3281 | } | |
3282 | } | |
3283 | } | |
3284 | ||
064af421 BP |
3285 | bond.n_slaves = port->n_ifaces; |
3286 | bond.slaves = xmalloc(port->n_ifaces * sizeof *bond.slaves); | |
3287 | for (i = 0; i < port->n_ifaces; i++) { | |
3288 | struct iface *iface = port->ifaces[i]; | |
3289 | struct compat_bond_slave *slave = &bond.slaves[i]; | |
3290 | slave->name = iface->name; | |
6643c03b JP |
3291 | |
3292 | /* We need to make the same determination as the Linux bonding | |
3293 | * code to determine whether a slave should be consider "up". | |
3294 | * The Linux function bond_miimon_inspect() supports four | |
3295 | * BOND_LINK_* states: | |
3296 | * | |
3297 | * - BOND_LINK_UP: carrier detected, updelay has passed. | |
3298 | * - BOND_LINK_FAIL: carrier lost, downdelay in progress. | |
3299 | * - BOND_LINK_DOWN: carrier lost, downdelay has passed. | |
3300 | * - BOND_LINK_BACK: carrier detected, updelay in progress. | |
3301 | * | |
3302 | * The function bond_info_show_slave() only considers BOND_LINK_UP | |
3303 | * to be "up" and anything else to be "down". | |
3304 | */ | |
3305 | slave->up = iface->enabled && iface->delay_expires == LLONG_MAX; | |
064af421 BP |
3306 | if (slave->up) { |
3307 | bond.up = true; | |
3308 | } | |
96b9b7a9 | 3309 | netdev_get_etheraddr(iface->netdev, slave->mac); |
064af421 | 3310 | } |
2aebae83 | 3311 | |
76343538 | 3312 | if (port->bond_fake_iface) { |
c6303ea1 JG |
3313 | struct netdev *bond_netdev; |
3314 | ||
149f577a | 3315 | if (!netdev_open_default(port->name, &bond_netdev)) { |
c6303ea1 JG |
3316 | if (bond.up) { |
3317 | netdev_turn_flags_on(bond_netdev, NETDEV_UP, true); | |
3318 | } else { | |
3319 | netdev_turn_flags_off(bond_netdev, NETDEV_UP, true); | |
3320 | } | |
3321 | netdev_close(bond_netdev); | |
3322 | } | |
3323 | } | |
3324 | ||
064af421 BP |
3325 | proc_net_compat_update_bond(port->name, &bond); |
3326 | free(bond.slaves); | |
3327 | } | |
3328 | ||
3329 | static void | |
3330 | port_update_vlan_compat(struct port *port) | |
3331 | { | |
3332 | struct bridge *br = port->bridge; | |
3333 | char *vlandev_name = NULL; | |
3334 | ||
3335 | if (port->vlan > 0) { | |
3336 | /* Figure out the name that the VLAN device should actually have, if it | |
3337 | * existed. This takes some work because the VLAN device would not | |
3338 | * have port->name in its name; rather, it would have the trunk port's | |
3339 | * name, and 'port' would be attached to a bridge that also had the | |
3340 | * VLAN device one of its ports. So we need to find a trunk port that | |
3341 | * includes port->vlan. | |
3342 | * | |
3343 | * There might be more than one candidate. This doesn't happen on | |
3344 | * XenServer, so if it happens we just pick the first choice in | |
3345 | * alphabetical order instead of creating multiple VLAN devices. */ | |
3346 | size_t i; | |
3347 | for (i = 0; i < br->n_ports; i++) { | |
3348 | struct port *p = br->ports[i]; | |
3349 | if (port_trunks_vlan(p, port->vlan) | |
3350 | && p->n_ifaces | |
3351 | && (!vlandev_name || strcmp(p->name, vlandev_name) <= 0)) | |
3352 | { | |
96b9b7a9 BP |
3353 | uint8_t ea[ETH_ADDR_LEN]; |
3354 | netdev_get_etheraddr(p->ifaces[0]->netdev, ea); | |
064af421 BP |
3355 | if (!eth_addr_is_multicast(ea) && |
3356 | !eth_addr_is_reserved(ea) && | |
3357 | !eth_addr_is_zero(ea)) { | |
3358 | vlandev_name = p->name; | |
3359 | } | |
3360 | } | |
3361 | } | |
3362 | } | |
3363 | proc_net_compat_update_vlan(port->name, vlandev_name, port->vlan); | |
3364 | } | |
3365 | \f | |
3366 | /* Interface functions. */ | |
3367 | ||
76343538 | 3368 | static struct iface * |
a740f0de | 3369 | iface_create(struct port *port, const struct ovsrec_interface *if_cfg) |
064af421 | 3370 | { |
064af421 | 3371 | struct iface *iface; |
a740f0de JG |
3372 | char *name = if_cfg->name; |
3373 | int error; | |
064af421 | 3374 | |
ec6fde61 | 3375 | iface = xzalloc(sizeof *iface); |
064af421 BP |
3376 | iface->port = port; |
3377 | iface->port_ifidx = port->n_ifaces; | |
3378 | iface->name = xstrdup(name); | |
3379 | iface->dp_ifidx = -1; | |
3380 | iface->tag = tag_create_random(); | |
064af421 | 3381 | iface->delay_expires = LLONG_MAX; |
0c6aea3f | 3382 | iface->netdev = NULL; |
149f577a | 3383 | iface->cfg = if_cfg; |
064af421 BP |
3384 | |
3385 | if (port->n_ifaces >= port->allocated_ifaces) { | |
3386 | port->ifaces = x2nrealloc(port->ifaces, &port->allocated_ifaces, | |
3387 | sizeof *port->ifaces); | |
3388 | } | |
3389 | port->ifaces[port->n_ifaces++] = iface; | |
3390 | if (port->n_ifaces > 1) { | |
3391 | port->bridge->has_bonded_ports = true; | |
3392 | } | |
3393 | ||
a740f0de JG |
3394 | /* Attempt to create the network interface in case it |
3395 | * doesn't exist yet. */ | |
149f577a JG |
3396 | if (!iface_is_internal(port->bridge, iface->name)) { |
3397 | error = set_up_iface(if_cfg, iface, true); | |
3398 | if (error) { | |
3399 | VLOG_WARN("could not create iface %s: %s", iface->name, | |
3400 | strerror(error)); | |
3401 | } | |
a740f0de JG |
3402 | } |
3403 | ||
064af421 BP |
3404 | VLOG_DBG("attached network device %s to port %s", iface->name, port->name); |
3405 | ||
064af421 | 3406 | bridge_flush(port->bridge); |
76343538 BP |
3407 | |
3408 | return iface; | |
064af421 BP |
3409 | } |
3410 | ||
3411 | static void | |
3412 | iface_destroy(struct iface *iface) | |
3413 | { | |
3414 | if (iface) { | |
3415 | struct port *port = iface->port; | |
3416 | struct bridge *br = port->bridge; | |
3417 | bool del_active = port->active_iface == iface->port_ifidx; | |
3418 | struct iface *del; | |
3419 | ||
3420 | if (iface->dp_ifidx >= 0) { | |
3421 | port_array_set(&br->ifaces, iface->dp_ifidx, NULL); | |
3422 | } | |
3423 | ||
3424 | del = port->ifaces[iface->port_ifidx] = port->ifaces[--port->n_ifaces]; | |
3425 | del->port_ifidx = iface->port_ifidx; | |
3426 | ||
0c6aea3f | 3427 | netdev_close(iface->netdev); |
064af421 BP |
3428 | |
3429 | if (del_active) { | |
3430 | ofproto_revalidate(port->bridge->ofproto, port->active_iface_tag); | |
3431 | bond_choose_active_iface(port); | |
2303f3b2 | 3432 | bond_send_learning_packets(port); |
064af421 BP |
3433 | } |
3434 | ||
a740f0de JG |
3435 | free(iface->name); |
3436 | free(iface); | |
3437 | ||
064af421 BP |
3438 | bridge_flush(port->bridge); |
3439 | } | |
3440 | } | |
3441 | ||
3442 | static struct iface * | |
3443 | iface_lookup(const struct bridge *br, const char *name) | |
3444 | { | |
3445 | size_t i, j; | |
3446 | ||
3447 | for (i = 0; i < br->n_ports; i++) { | |
3448 | struct port *port = br->ports[i]; | |
3449 | for (j = 0; j < port->n_ifaces; j++) { | |
3450 | struct iface *iface = port->ifaces[j]; | |
3451 | if (!strcmp(iface->name, name)) { | |
3452 | return iface; | |
3453 | } | |
3454 | } | |
3455 | } | |
3456 | return NULL; | |
3457 | } | |
3458 | ||
3459 | static struct iface * | |
3460 | iface_from_dp_ifidx(const struct bridge *br, uint16_t dp_ifidx) | |
3461 | { | |
3462 | return port_array_get(&br->ifaces, dp_ifidx); | |
3463 | } | |
557d8e6c BP |
3464 | |
3465 | /* Returns true if 'iface' is the name of an "internal" interface on bridge | |
3466 | * 'br', that is, an interface that is entirely simulated within the datapath. | |
3467 | * The local port (ODPP_LOCAL) is always an internal interface. Other local | |
3468 | * interfaces are created by setting "iface.<iface>.internal = true". | |
3469 | * | |
3470 | * In addition, we have a kluge-y feature that creates an internal port with | |
3471 | * the name of a bonded port if "bonding.<bondname>.fake-iface = true" is set. | |
3472 | * This feature needs to go away in the long term. Until then, this is one | |
3473 | * reason why this function takes a name instead of a struct iface: the fake | |
3474 | * interfaces created this way do not have a struct iface. */ | |
3475 | static bool | |
76343538 | 3476 | iface_is_internal(const struct bridge *br, const char *if_name) |
557d8e6c | 3477 | { |
76343538 BP |
3478 | /* XXX wastes time */ |
3479 | struct iface *iface; | |
3480 | struct port *port; | |
3481 | ||
3482 | if (!strcmp(if_name, br->name)) { | |
557d8e6c BP |
3483 | return true; |
3484 | } | |
3485 | ||
76343538 BP |
3486 | iface = iface_lookup(br, if_name); |
3487 | if (iface && !strcmp(iface->cfg->type, "internal")) { | |
3488 | return true; | |
557d8e6c BP |
3489 | } |
3490 | ||
76343538 | 3491 | port = port_lookup(br, if_name); |
2c30e5d1 | 3492 | if (port && port->n_ifaces > 1 && port->cfg->bond_fake_iface) { |
76343538 BP |
3493 | return true; |
3494 | } | |
557d8e6c BP |
3495 | return false; |
3496 | } | |
52df17e7 BP |
3497 | |
3498 | /* Set Ethernet address of 'iface', if one is specified in the configuration | |
3499 | * file. */ | |
3500 | static void | |
3501 | iface_set_mac(struct iface *iface) | |
3502 | { | |
76343538 | 3503 | uint8_t ea[ETH_ADDR_LEN]; |
52df17e7 | 3504 | |
76343538 | 3505 | if (iface->cfg->mac && eth_addr_from_string(iface->cfg->mac, ea)) { |
52df17e7 BP |
3506 | if (eth_addr_is_multicast(ea)) { |
3507 | VLOG_ERR("interface %s: cannot set MAC to multicast address", | |
3508 | iface->name); | |
3509 | } else if (iface->dp_ifidx == ODPP_LOCAL) { | |
3510 | VLOG_ERR("ignoring iface.%s.mac; use bridge.%s.mac instead", | |
3511 | iface->name, iface->name); | |
3512 | } else { | |
4d678233 | 3513 | int error = netdev_set_etheraddr(iface->netdev, ea); |
52df17e7 BP |
3514 | if (error) { |
3515 | VLOG_ERR("interface %s: setting MAC failed (%s)", | |
3516 | iface->name, strerror(error)); | |
3517 | } | |
3518 | } | |
3519 | } | |
3520 | } | |
064af421 BP |
3521 | \f |
3522 | /* Port mirroring. */ | |
3523 | ||
3524 | static void | |
37e7f427 | 3525 | mirror_reconfigure(struct bridge *br) |
064af421 | 3526 | { |
37e7f427 BP |
3527 | struct shash old_mirrors, new_mirrors; |
3528 | struct shash_node *node; | |
f2d7fd66 | 3529 | unsigned long *rspan_vlans; |
37e7f427 | 3530 | int i; |
064af421 | 3531 | |
37e7f427 BP |
3532 | /* Collect old mirrors. */ |
3533 | shash_init(&old_mirrors); | |
064af421 BP |
3534 | for (i = 0; i < MAX_MIRRORS; i++) { |
3535 | if (br->mirrors[i]) { | |
37e7f427 | 3536 | shash_add(&old_mirrors, br->mirrors[i]->name, br->mirrors[i]); |
064af421 BP |
3537 | } |
3538 | } | |
3539 | ||
37e7f427 BP |
3540 | /* Collect new mirrors. */ |
3541 | shash_init(&new_mirrors); | |
3542 | for (i = 0; i < br->cfg->n_mirrors; i++) { | |
3543 | struct ovsrec_mirror *cfg = br->cfg->mirrors[i]; | |
3544 | if (!shash_add_once(&new_mirrors, cfg->name, cfg)) { | |
3545 | VLOG_WARN("bridge %s: %s specified twice as mirror", | |
3546 | br->name, cfg->name); | |
064af421 BP |
3547 | } |
3548 | } | |
37e7f427 BP |
3549 | |
3550 | /* Get rid of deleted mirrors and add new mirrors. */ | |
3551 | SHASH_FOR_EACH (node, &old_mirrors) { | |
3552 | if (!shash_find(&new_mirrors, node->name)) { | |
3553 | mirror_destroy(node->data); | |
064af421 BP |
3554 | } |
3555 | } | |
37e7f427 BP |
3556 | SHASH_FOR_EACH (node, &new_mirrors) { |
3557 | struct mirror *mirror = shash_find_data(&old_mirrors, node->name); | |
3558 | if (!mirror) { | |
3559 | mirror = mirror_create(br, node->name); | |
3560 | if (!mirror) { | |
3561 | break; | |
3562 | } | |
064af421 | 3563 | } |
37e7f427 | 3564 | mirror_reconfigure_one(mirror, node->data); |
064af421 | 3565 | } |
37e7f427 BP |
3566 | shash_destroy(&old_mirrors); |
3567 | shash_destroy(&new_mirrors); | |
064af421 BP |
3568 | |
3569 | /* Update port reserved status. */ | |
3570 | for (i = 0; i < br->n_ports; i++) { | |
3571 | br->ports[i]->is_mirror_output_port = false; | |
3572 | } | |
3573 | for (i = 0; i < MAX_MIRRORS; i++) { | |
3574 | struct mirror *m = br->mirrors[i]; | |
3575 | if (m && m->out_port) { | |
3576 | m->out_port->is_mirror_output_port = true; | |
3577 | } | |
3578 | } | |
f2d7fd66 | 3579 | |
8f30d09a | 3580 | /* Update flooded vlans (for RSPAN). */ |
f2d7fd66 | 3581 | rspan_vlans = NULL; |
37e7f427 | 3582 | if (br->cfg->n_flood_vlans) { |
f2d7fd66 JG |
3583 | rspan_vlans = bitmap_allocate(4096); |
3584 | ||
37e7f427 BP |
3585 | for (i = 0; i < br->cfg->n_flood_vlans; i++) { |
3586 | int64_t vlan = br->cfg->flood_vlans[i]; | |
3587 | if (vlan >= 0 && vlan < 4096) { | |
f2d7fd66 | 3588 | bitmap_set1(rspan_vlans, vlan); |
37e7f427 | 3589 | VLOG_INFO("bridge %s: disabling learning on vlan %"PRId64, |
42061b2a | 3590 | br->name, vlan); |
f2d7fd66 | 3591 | } else { |
37e7f427 BP |
3592 | VLOG_ERR("bridge %s: invalid value %"PRId64 "for flood VLAN", |
3593 | br->name, vlan); | |
f2d7fd66 JG |
3594 | } |
3595 | } | |
3596 | } | |
8f30d09a | 3597 | if (mac_learning_set_flood_vlans(br->ml, rspan_vlans)) { |
f2d7fd66 JG |
3598 | bridge_flush(br); |
3599 | } | |
064af421 BP |
3600 | } |
3601 | ||
37e7f427 | 3602 | static struct mirror * |
064af421 BP |
3603 | mirror_create(struct bridge *br, const char *name) |
3604 | { | |
3605 | struct mirror *m; | |
3606 | size_t i; | |
3607 | ||
3608 | for (i = 0; ; i++) { | |
3609 | if (i >= MAX_MIRRORS) { | |
3610 | VLOG_WARN("bridge %s: maximum of %d port mirrors reached, " | |
3611 | "cannot create %s", br->name, MAX_MIRRORS, name); | |
37e7f427 | 3612 | return NULL; |
064af421 BP |
3613 | } |
3614 | if (!br->mirrors[i]) { | |
3615 | break; | |
3616 | } | |
3617 | } | |
3618 | ||
3619 | VLOG_INFO("created port mirror %s on bridge %s", name, br->name); | |
3620 | bridge_flush(br); | |
3621 | ||
ec6fde61 | 3622 | br->mirrors[i] = m = xzalloc(sizeof *m); |
064af421 BP |
3623 | m->bridge = br; |
3624 | m->idx = i; | |
3625 | m->name = xstrdup(name); | |
37e7f427 BP |
3626 | shash_init(&m->src_ports); |
3627 | shash_init(&m->dst_ports); | |
064af421 BP |
3628 | m->vlans = NULL; |
3629 | m->n_vlans = 0; | |
3630 | m->out_vlan = -1; | |
3631 | m->out_port = NULL; | |
37e7f427 BP |
3632 | |
3633 | return m; | |
064af421 BP |
3634 | } |
3635 | ||
3636 | static void | |
3637 | mirror_destroy(struct mirror *m) | |
3638 | { | |
3639 | if (m) { | |
3640 | struct bridge *br = m->bridge; | |
3641 | size_t i; | |
3642 | ||
3643 | for (i = 0; i < br->n_ports; i++) { | |
3644 | br->ports[i]->src_mirrors &= ~(MIRROR_MASK_C(1) << m->idx); | |
3645 | br->ports[i]->dst_mirrors &= ~(MIRROR_MASK_C(1) << m->idx); | |
3646 | } | |
3647 | ||
37e7f427 BP |
3648 | shash_destroy(&m->src_ports); |
3649 | shash_destroy(&m->dst_ports); | |
064af421 BP |
3650 | free(m->vlans); |
3651 | ||
3652 | m->bridge->mirrors[m->idx] = NULL; | |
3653 | free(m); | |
3654 | ||
3655 | bridge_flush(br); | |
3656 | } | |
3657 | } | |
3658 | ||
3659 | static void | |
37e7f427 BP |
3660 | mirror_collect_ports(struct mirror *m, struct ovsrec_port **ports, int n_ports, |
3661 | struct shash *names) | |
064af421 | 3662 | { |
064af421 BP |
3663 | size_t i; |
3664 | ||
37e7f427 BP |
3665 | for (i = 0; i < n_ports; i++) { |
3666 | const char *name = ports[i]->name; | |
064af421 | 3667 | if (port_lookup(m->bridge, name)) { |
37e7f427 | 3668 | shash_add_once(names, name, NULL); |
064af421 | 3669 | } else { |
37e7f427 BP |
3670 | VLOG_WARN("bridge %s: mirror %s cannot match on nonexistent " |
3671 | "port %s", m->bridge->name, m->name, name); | |
064af421 BP |
3672 | } |
3673 | } | |
064af421 BP |
3674 | } |
3675 | ||
3676 | static size_t | |
37e7f427 BP |
3677 | mirror_collect_vlans(struct mirror *m, const struct ovsrec_mirror *cfg, |
3678 | int **vlans) | |
064af421 | 3679 | { |
37e7f427 BP |
3680 | size_t n_vlans; |
3681 | size_t i; | |
064af421 | 3682 | |
0b523ea7 | 3683 | *vlans = xmalloc(sizeof **vlans * cfg->n_select_vlan); |
064af421 | 3684 | n_vlans = 0; |
37e7f427 BP |
3685 | for (i = 0; i < cfg->n_select_vlan; i++) { |
3686 | int64_t vlan = cfg->select_vlan[i]; | |
3687 | if (vlan < 0 || vlan > 4095) { | |
3688 | VLOG_WARN("bridge %s: mirror %s selects invalid VLAN %"PRId64, | |
3689 | m->bridge->name, m->name, vlan); | |
064af421 BP |
3690 | } else { |
3691 | (*vlans)[n_vlans++] = vlan; | |
3692 | } | |
3693 | } | |
3694 | return n_vlans; | |
3695 | } | |
3696 | ||
3697 | static bool | |
3698 | vlan_is_mirrored(const struct mirror *m, int vlan) | |
3699 | { | |
3700 | size_t i; | |
3701 | ||
3702 | for (i = 0; i < m->n_vlans; i++) { | |
3703 | if (m->vlans[i] == vlan) { | |
3704 | return true; | |
3705 | } | |
3706 | } | |
3707 | return false; | |
3708 | } | |
3709 | ||
3710 | static bool | |
3711 | port_trunks_any_mirrored_vlan(const struct mirror *m, const struct port *p) | |
3712 | { | |
3713 | size_t i; | |
3714 | ||
3715 | for (i = 0; i < m->n_vlans; i++) { | |
3716 | if (port_trunks_vlan(p, m->vlans[i])) { | |
3717 | return true; | |
3718 | } | |
3719 | } | |
3720 | return false; | |
3721 | } | |
3722 | ||
3723 | static void | |
37e7f427 | 3724 | mirror_reconfigure_one(struct mirror *m, struct ovsrec_mirror *cfg) |
064af421 | 3725 | { |
37e7f427 | 3726 | struct shash src_ports, dst_ports; |
064af421 | 3727 | mirror_mask_t mirror_bit; |
064af421 BP |
3728 | struct port *out_port; |
3729 | int out_vlan; | |
3730 | size_t n_vlans; | |
3731 | int *vlans; | |
3732 | size_t i; | |
3733 | bool mirror_all_ports; | |
e0c27cff | 3734 | bool any_ports_specified; |
37e7f427 | 3735 | bool any_vlans_specified; |
064af421 BP |
3736 | |
3737 | /* Get output port. */ | |
37e7f427 BP |
3738 | if (cfg->output_port) { |
3739 | out_port = port_lookup(m->bridge, cfg->output_port->name); | |
064af421 | 3740 | if (!out_port) { |
37e7f427 BP |
3741 | VLOG_ERR("bridge %s: mirror %s outputs to port not on bridge", |
3742 | m->bridge->name, m->name); | |
064af421 | 3743 | mirror_destroy(m); |
064af421 BP |
3744 | return; |
3745 | } | |
3746 | out_vlan = -1; | |
3747 | ||
37e7f427 BP |
3748 | if (cfg->output_vlan) { |
3749 | VLOG_ERR("bridge %s: mirror %s specifies both output port and " | |
3750 | "output vlan; ignoring output vlan", | |
3751 | m->bridge->name, m->name); | |
064af421 | 3752 | } |
37e7f427 | 3753 | } else if (cfg->output_vlan) { |
064af421 | 3754 | out_port = NULL; |
37e7f427 | 3755 | out_vlan = *cfg->output_vlan; |
064af421 | 3756 | } else { |
37e7f427 BP |
3757 | VLOG_ERR("bridge %s: mirror %s does not specify output; ignoring", |
3758 | m->bridge->name, m->name); | |
064af421 | 3759 | mirror_destroy(m); |
064af421 BP |
3760 | return; |
3761 | } | |
3762 | ||
3763 | /* Get all the ports, and drop duplicates and ports that don't exist. */ | |
37e7f427 BP |
3764 | shash_init(&src_ports); |
3765 | shash_init(&dst_ports); | |
3766 | mirror_collect_ports(m, cfg->select_src_port, cfg->n_select_src_port, | |
3767 | &src_ports); | |
3768 | mirror_collect_ports(m, cfg->select_dst_port, cfg->n_select_dst_port, | |
3769 | &dst_ports); | |
3770 | any_ports_specified = cfg->n_select_dst_port || cfg->n_select_dst_port; | |
3771 | if (any_ports_specified | |
3772 | && shash_is_empty(&src_ports) && shash_is_empty(&dst_ports)) { | |
3773 | VLOG_ERR("bridge %s: disabling mirror %s since none of the specified " | |
3774 | "selection ports exists", m->bridge->name, m->name); | |
e0c27cff BP |
3775 | mirror_destroy(m); |
3776 | goto exit; | |
3777 | } | |
064af421 BP |
3778 | |
3779 | /* Get all the vlans, and drop duplicate and invalid vlans. */ | |
37e7f427 BP |
3780 | n_vlans = mirror_collect_vlans(m, cfg, &vlans); |
3781 | any_vlans_specified = cfg->n_select_vlan > 0; | |
3782 | if (any_vlans_specified && !n_vlans) { | |
3783 | VLOG_ERR("bridge %s: disabling mirror %s since none of the specified " | |
3784 | "VLANs exists", m->bridge->name, m->name); | |
3785 | mirror_destroy(m); | |
3786 | goto exit; | |
3787 | } | |
064af421 BP |
3788 | |
3789 | /* Update mirror data. */ | |
37e7f427 BP |
3790 | if (!shash_equal_keys(&m->src_ports, &src_ports) |
3791 | || !shash_equal_keys(&m->dst_ports, &dst_ports) | |
064af421 BP |
3792 | || m->n_vlans != n_vlans |
3793 | || memcmp(m->vlans, vlans, sizeof *vlans * n_vlans) | |
3794 | || m->out_port != out_port | |
3795 | || m->out_vlan != out_vlan) { | |
3796 | bridge_flush(m->bridge); | |
3797 | } | |
37e7f427 BP |
3798 | shash_swap(&m->src_ports, &src_ports); |
3799 | shash_swap(&m->dst_ports, &dst_ports); | |
064af421 BP |
3800 | free(m->vlans); |
3801 | m->vlans = vlans; | |
3802 | m->n_vlans = n_vlans; | |
3803 | m->out_port = out_port; | |
3804 | m->out_vlan = out_vlan; | |
3805 | ||
3806 | /* If no selection criteria have been given, mirror for all ports. */ | |
37e7f427 | 3807 | mirror_all_ports = !any_ports_specified && !any_vlans_specified; |
064af421 BP |
3808 | |
3809 | /* Update ports. */ | |
3810 | mirror_bit = MIRROR_MASK_C(1) << m->idx; | |
3811 | for (i = 0; i < m->bridge->n_ports; i++) { | |
3812 | struct port *port = m->bridge->ports[i]; | |
3813 | ||
3814 | if (mirror_all_ports | |
37e7f427 | 3815 | || shash_find(&m->src_ports, port->name) |
064af421 BP |
3816 | || (m->n_vlans |
3817 | && (!port->vlan | |
3818 | ? port_trunks_any_mirrored_vlan(m, port) | |
3819 | : vlan_is_mirrored(m, port->vlan)))) { | |
3820 | port->src_mirrors |= mirror_bit; | |
3821 | } else { | |
3822 | port->src_mirrors &= ~mirror_bit; | |
3823 | } | |
3824 | ||
37e7f427 | 3825 | if (mirror_all_ports || shash_find(&m->dst_ports, port->name)) { |
064af421 BP |
3826 | port->dst_mirrors |= mirror_bit; |
3827 | } else { | |
3828 | port->dst_mirrors &= ~mirror_bit; | |
3829 | } | |
3830 | } | |
3831 | ||
3832 | /* Clean up. */ | |
e0c27cff | 3833 | exit: |
37e7f427 BP |
3834 | shash_destroy(&src_ports); |
3835 | shash_destroy(&dst_ports); | |
064af421 | 3836 | } |