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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? */ |
c8143c88 BP |
140 | int bond_rebalance_interval; /* Interval between rebalances, in ms. */ |
141 | long long int bond_next_rebalance; /* Next rebalancing time. */ | |
064af421 BP |
142 | |
143 | /* Port mirroring info. */ | |
144 | mirror_mask_t src_mirrors; /* Mirrors triggered when packet received. */ | |
145 | mirror_mask_t dst_mirrors; /* Mirrors triggered when packet sent. */ | |
146 | bool is_mirror_output_port; /* Does port mirroring send frames here? */ | |
76343538 BP |
147 | |
148 | /* This member is only valid *during* bridge_reconfigure(). */ | |
149 | const struct ovsrec_port *cfg; | |
064af421 BP |
150 | }; |
151 | ||
152 | #define DP_MAX_PORTS 255 | |
153 | struct bridge { | |
154 | struct list node; /* Node in global list of bridges. */ | |
155 | char *name; /* User-specified arbitrary name. */ | |
93dfc067 | 156 | struct mac_learning *ml; /* MAC learning table. */ |
064af421 BP |
157 | bool sent_config_request; /* Successfully sent config request? */ |
158 | uint8_t default_ea[ETH_ADDR_LEN]; /* Default MAC. */ | |
159 | ||
160 | /* Support for remote controllers. */ | |
161 | char *controller; /* NULL if there is no remote controller; | |
162 | * "discover" to do controller discovery; | |
163 | * otherwise a vconn name. */ | |
164 | ||
165 | /* OpenFlow switch processing. */ | |
166 | struct ofproto *ofproto; /* OpenFlow switch. */ | |
167 | ||
23ff2821 JP |
168 | /* Description strings. */ |
169 | char *mfr_desc; /* Manufacturer. */ | |
170 | char *hw_desc; /* Hardware. */ | |
171 | char *sw_desc; /* Software version. */ | |
172 | char *serial_desc; /* Serial number. */ | |
173 | char *dp_desc; /* Datapath description. */ | |
174 | ||
064af421 | 175 | /* Kernel datapath information. */ |
c228a364 | 176 | struct dpif *dpif; /* Datapath. */ |
064af421 BP |
177 | struct port_array ifaces; /* Indexed by kernel datapath port number. */ |
178 | ||
179 | /* Bridge ports. */ | |
180 | struct port **ports; | |
181 | size_t n_ports, allocated_ports; | |
182 | ||
183 | /* Bonding. */ | |
184 | bool has_bonded_ports; | |
064af421 BP |
185 | |
186 | /* Flow tracking. */ | |
187 | bool flush; | |
188 | ||
189 | /* Flow statistics gathering. */ | |
190 | time_t next_stats_request; | |
191 | ||
192 | /* Port mirroring. */ | |
193 | struct mirror *mirrors[MAX_MIRRORS]; | |
76343538 BP |
194 | |
195 | /* This member is only valid *during* bridge_reconfigure(). */ | |
196 | const struct ovsrec_bridge *cfg; | |
064af421 BP |
197 | }; |
198 | ||
199 | /* List of all bridges. */ | |
200 | static struct list all_bridges = LIST_INITIALIZER(&all_bridges); | |
201 | ||
202 | /* Maximum number of datapaths. */ | |
203 | enum { DP_MAX = 256 }; | |
204 | ||
1a6f1e2a | 205 | static struct bridge *bridge_create(const struct ovsrec_bridge *br_cfg); |
064af421 BP |
206 | static void bridge_destroy(struct bridge *); |
207 | static struct bridge *bridge_lookup(const char *name); | |
8ca79daa | 208 | static unixctl_cb_func bridge_unixctl_dump_flows; |
064af421 | 209 | static int bridge_run_one(struct bridge *); |
d49d354b JP |
210 | static const struct ovsrec_controller *bridge_get_controller( |
211 | const struct ovsrec_open_vswitch *ovs_cfg, | |
212 | const struct bridge *br); | |
76343538 BP |
213 | static void bridge_reconfigure_one(const struct ovsrec_open_vswitch *, |
214 | struct bridge *); | |
215 | static void bridge_reconfigure_controller(const struct ovsrec_open_vswitch *, | |
216 | struct bridge *); | |
217 | static void bridge_get_all_ifaces(const struct bridge *, struct shash *ifaces); | |
064af421 BP |
218 | static void bridge_fetch_dp_ifaces(struct bridge *); |
219 | static void bridge_flush(struct bridge *); | |
220 | static void bridge_pick_local_hw_addr(struct bridge *, | |
221 | uint8_t ea[ETH_ADDR_LEN], | |
07c318f4 | 222 | struct iface **hw_addr_iface); |
064af421 BP |
223 | static uint64_t bridge_pick_datapath_id(struct bridge *, |
224 | const uint8_t bridge_ea[ETH_ADDR_LEN], | |
07c318f4 BP |
225 | struct iface *hw_addr_iface); |
226 | static struct iface *bridge_get_local_iface(struct bridge *); | |
064af421 BP |
227 | static uint64_t dpid_from_hash(const void *, size_t nbytes); |
228 | ||
8ca79daa | 229 | static unixctl_cb_func bridge_unixctl_fdb_show; |
8c4c1387 | 230 | |
da285df4 | 231 | static void bond_init(void); |
064af421 BP |
232 | static void bond_run(struct bridge *); |
233 | static void bond_wait(struct bridge *); | |
234 | static void bond_rebalance_port(struct port *); | |
2303f3b2 | 235 | static void bond_send_learning_packets(struct port *); |
8b2a2f4a | 236 | static void bond_enable_slave(struct iface *iface, bool enable); |
064af421 | 237 | |
76343538 BP |
238 | static struct port *port_create(struct bridge *, const char *name); |
239 | static void port_reconfigure(struct port *, const struct ovsrec_port *); | |
064af421 BP |
240 | static void port_destroy(struct port *); |
241 | static struct port *port_lookup(const struct bridge *, const char *name); | |
da285df4 | 242 | static struct iface *port_lookup_iface(const struct port *, const char *name); |
064af421 BP |
243 | static struct port *port_from_dp_ifidx(const struct bridge *, |
244 | uint16_t dp_ifidx); | |
245 | static void port_update_bond_compat(struct port *); | |
246 | static void port_update_vlan_compat(struct port *); | |
0c6aea3f | 247 | static void port_update_bonding(struct port *); |
064af421 | 248 | |
37e7f427 | 249 | static struct mirror *mirror_create(struct bridge *, const char *name); |
064af421 BP |
250 | static void mirror_destroy(struct mirror *); |
251 | static void mirror_reconfigure(struct bridge *); | |
37e7f427 | 252 | static void mirror_reconfigure_one(struct mirror *, struct ovsrec_mirror *); |
064af421 BP |
253 | static bool vlan_is_mirrored(const struct mirror *, int vlan); |
254 | ||
a740f0de JG |
255 | static struct iface *iface_create(struct port *port, |
256 | const struct ovsrec_interface *if_cfg); | |
064af421 BP |
257 | static void iface_destroy(struct iface *); |
258 | static struct iface *iface_lookup(const struct bridge *, const char *name); | |
259 | static struct iface *iface_from_dp_ifidx(const struct bridge *, | |
260 | uint16_t dp_ifidx); | |
557d8e6c | 261 | static bool iface_is_internal(const struct bridge *, const char *name); |
52df17e7 | 262 | static void iface_set_mac(struct iface *); |
064af421 BP |
263 | |
264 | /* Hooks into ofproto processing. */ | |
265 | static struct ofhooks bridge_ofhooks; | |
266 | \f | |
267 | /* Public functions. */ | |
268 | ||
269 | /* Adds the name of each interface used by a bridge, including local and | |
270 | * internal ports, to 'svec'. */ | |
271 | void | |
272 | bridge_get_ifaces(struct svec *svec) | |
273 | { | |
274 | struct bridge *br, *next; | |
275 | size_t i, j; | |
276 | ||
277 | LIST_FOR_EACH_SAFE (br, next, struct bridge, node, &all_bridges) { | |
278 | for (i = 0; i < br->n_ports; i++) { | |
279 | struct port *port = br->ports[i]; | |
280 | ||
281 | for (j = 0; j < port->n_ifaces; j++) { | |
282 | struct iface *iface = port->ifaces[j]; | |
283 | if (iface->dp_ifidx < 0) { | |
b29ba128 | 284 | VLOG_ERR("%s interface not in datapath %s, ignoring", |
c228a364 | 285 | iface->name, dpif_name(br->dpif)); |
064af421 BP |
286 | } else { |
287 | if (iface->dp_ifidx != ODPP_LOCAL) { | |
288 | svec_add(svec, iface->name); | |
289 | } | |
290 | } | |
291 | } | |
292 | } | |
293 | } | |
294 | } | |
295 | ||
064af421 | 296 | void |
76343538 | 297 | bridge_init(const struct ovsrec_open_vswitch *cfg) |
064af421 | 298 | { |
76343538 | 299 | struct svec bridge_names; |
1a6f1e2a | 300 | struct svec dpif_names, dpif_types; |
d3d22744 | 301 | size_t i; |
da285df4 | 302 | |
8ca79daa | 303 | unixctl_command_register("fdb/show", bridge_unixctl_fdb_show, NULL); |
8c4c1387 | 304 | |
76343538 BP |
305 | svec_init(&bridge_names); |
306 | for (i = 0; i < cfg->n_bridges; i++) { | |
307 | svec_add(&bridge_names, cfg->bridges[i]->name); | |
308 | } | |
309 | svec_sort(&bridge_names); | |
310 | ||
d2a34569 | 311 | svec_init(&dpif_names); |
1a6f1e2a JG |
312 | svec_init(&dpif_types); |
313 | dp_enumerate_types(&dpif_types); | |
314 | for (i = 0; i < dpif_types.n; i++) { | |
c228a364 | 315 | struct dpif *dpif; |
d3d22744 | 316 | int retval; |
1a6f1e2a | 317 | size_t j; |
064af421 | 318 | |
1a6f1e2a | 319 | dp_enumerate_names(dpif_types.names[i], &dpif_names); |
d3d22744 | 320 | |
1a6f1e2a JG |
321 | for (j = 0; j < dpif_names.n; j++) { |
322 | retval = dpif_open(dpif_names.names[j], dpif_types.names[i], &dpif); | |
323 | if (!retval) { | |
324 | struct svec all_names; | |
325 | size_t k; | |
326 | ||
327 | svec_init(&all_names); | |
328 | dpif_get_all_names(dpif, &all_names); | |
329 | for (k = 0; k < all_names.n; k++) { | |
330 | if (svec_contains(&bridge_names, all_names.names[k])) { | |
331 | goto found; | |
332 | } | |
d3d22744 | 333 | } |
1a6f1e2a JG |
334 | dpif_delete(dpif); |
335 | found: | |
336 | svec_destroy(&all_names); | |
337 | dpif_close(dpif); | |
064af421 | 338 | } |
064af421 BP |
339 | } |
340 | } | |
7128cd6b | 341 | svec_destroy(&bridge_names); |
d0c9d304 | 342 | svec_destroy(&dpif_names); |
1a6f1e2a | 343 | svec_destroy(&dpif_types); |
064af421 | 344 | |
8ca79daa BP |
345 | unixctl_command_register("bridge/dump-flows", bridge_unixctl_dump_flows, |
346 | NULL); | |
4f2cad2c | 347 | |
d3d22744 | 348 | bond_init(); |
76343538 | 349 | bridge_reconfigure(cfg); |
064af421 BP |
350 | } |
351 | ||
352 | #ifdef HAVE_OPENSSL | |
064af421 | 353 | static void |
76343538 | 354 | bridge_configure_ssl(const struct ovsrec_ssl *ssl) |
064af421 | 355 | { |
415f6c0b BP |
356 | /* XXX SSL should be configurable on a per-bridge basis. */ |
357 | if (ssl) { | |
358 | stream_ssl_set_private_key_file(ssl->private_key); | |
359 | stream_ssl_set_certificate_file(ssl->certificate); | |
360 | stream_ssl_set_ca_cert_file(ssl->ca_cert, ssl->bootstrap_ca_cert); | |
064af421 BP |
361 | } |
362 | } | |
363 | #endif | |
364 | ||
6c88d577 JP |
365 | /* Attempt to create the network device 'iface_name' through the netdev |
366 | * library. */ | |
367 | static int | |
149f577a JG |
368 | set_up_iface(const struct ovsrec_interface *iface_cfg, struct iface *iface, |
369 | bool create) | |
6c88d577 | 370 | { |
76343538 BP |
371 | struct shash_node *node; |
372 | struct shash options; | |
149f577a | 373 | int error = 0; |
6c88d577 JP |
374 | size_t i; |
375 | ||
76343538 BP |
376 | shash_init(&options); |
377 | for (i = 0; i < iface_cfg->n_options; i++) { | |
378 | shash_add(&options, iface_cfg->key_options[i], | |
379 | xstrdup(iface_cfg->value_options[i])); | |
6c88d577 JP |
380 | } |
381 | ||
382 | if (create) { | |
149f577a JG |
383 | struct netdev_options netdev_options; |
384 | ||
385 | memset(&netdev_options, 0, sizeof netdev_options); | |
386 | netdev_options.name = iface_cfg->name; | |
d4c2000b JP |
387 | if (!strcmp(iface_cfg->type, "internal")) { |
388 | /* An "internal" config type maps to a netdev "system" type. */ | |
389 | netdev_options.type = "system"; | |
390 | } else { | |
391 | netdev_options.type = iface_cfg->type; | |
392 | } | |
149f577a JG |
393 | netdev_options.args = &options; |
394 | netdev_options.ethertype = NETDEV_ETH_TYPE_NONE; | |
395 | netdev_options.may_create = true; | |
396 | if (iface_is_internal(iface->port->bridge, iface_cfg->name)) { | |
397 | netdev_options.may_open = true; | |
398 | } | |
399 | ||
400 | error = netdev_open(&netdev_options, &iface->netdev); | |
401 | ||
402 | if (iface->netdev) { | |
403 | netdev_get_carrier(iface->netdev, &iface->enabled); | |
404 | } | |
405 | } else if (iface->netdev) { | |
406 | const char *netdev_type = netdev_get_type(iface->netdev); | |
407 | const char *iface_type = iface_cfg->type && strlen(iface_cfg->type) | |
408 | ? iface_cfg->type : NULL; | |
409 | ||
d4c2000b JP |
410 | /* An "internal" config type maps to a netdev "system" type. */ |
411 | if (iface_type && !strcmp(iface_type, "internal")) { | |
412 | iface_type = "system"; | |
413 | } | |
414 | ||
149f577a JG |
415 | if (!iface_type || !strcmp(netdev_type, iface_type)) { |
416 | error = netdev_reconfigure(iface->netdev, &options); | |
417 | } else { | |
418 | VLOG_WARN("%s: attempting change device type from %s to %s", | |
419 | iface_cfg->name, netdev_type, iface_type); | |
420 | error = EINVAL; | |
421 | } | |
6c88d577 JP |
422 | } |
423 | ||
76343538 BP |
424 | SHASH_FOR_EACH (node, &options) { |
425 | free(node->data); | |
426 | } | |
427 | shash_destroy(&options); | |
6c88d577 JP |
428 | |
429 | return error; | |
430 | } | |
431 | ||
6c88d577 | 432 | static int |
149f577a | 433 | reconfigure_iface(const struct ovsrec_interface *iface_cfg, struct iface *iface) |
6c88d577 | 434 | { |
149f577a | 435 | return set_up_iface(iface_cfg, iface, false); |
6c88d577 JP |
436 | } |
437 | ||
0c6aea3f | 438 | static bool |
c69ee87c BP |
439 | check_iface_netdev(struct bridge *br OVS_UNUSED, struct iface *iface, |
440 | void *aux OVS_UNUSED) | |
0c6aea3f | 441 | { |
149f577a JG |
442 | if (!iface->netdev) { |
443 | int error = set_up_iface(iface->cfg, iface, true); | |
444 | if (error) { | |
445 | VLOG_WARN("could not open netdev on %s, dropping: %s", iface->name, | |
446 | strerror(error)); | |
447 | return false; | |
448 | } | |
0c6aea3f | 449 | } |
149f577a JG |
450 | |
451 | return true; | |
0c6aea3f BP |
452 | } |
453 | ||
6ae39834 | 454 | static bool |
67a4917b BP |
455 | check_iface_dp_ifidx(struct bridge *br, struct iface *iface, |
456 | void *aux OVS_UNUSED) | |
6ae39834 | 457 | { |
6ae39834 | 458 | if (iface->dp_ifidx >= 0) { |
6ae39834 BP |
459 | VLOG_DBG("%s has interface %s on port %d", |
460 | dpif_name(br->dpif), | |
461 | iface->name, iface->dp_ifidx); | |
462 | return true; | |
463 | } else { | |
464 | VLOG_ERR("%s interface not in %s, dropping", | |
465 | iface->name, dpif_name(br->dpif)); | |
466 | return false; | |
467 | } | |
468 | } | |
469 | ||
795fe1fb | 470 | static bool |
67a4917b BP |
471 | set_iface_properties(struct bridge *br OVS_UNUSED, struct iface *iface, |
472 | void *aux OVS_UNUSED) | |
795fe1fb | 473 | { |
4d678233 | 474 | /* Set policing attributes. */ |
76343538 BP |
475 | netdev_set_policing(iface->netdev, |
476 | iface->cfg->ingress_policing_rate, | |
477 | iface->cfg->ingress_policing_burst); | |
4d678233 BP |
478 | |
479 | /* Set MAC address of internal interfaces other than the local | |
480 | * interface. */ | |
481 | if (iface->dp_ifidx != ODPP_LOCAL | |
482 | && iface_is_internal(br, iface->name)) { | |
483 | iface_set_mac(iface); | |
484 | } | |
485 | ||
795fe1fb BP |
486 | return true; |
487 | } | |
488 | ||
6ae39834 BP |
489 | /* Calls 'cb' for each interfaces in 'br', passing along the 'aux' argument. |
490 | * Deletes from 'br' all the interfaces for which 'cb' returns false, and then | |
491 | * deletes from 'br' any ports that no longer have any interfaces. */ | |
492 | static void | |
493 | iterate_and_prune_ifaces(struct bridge *br, | |
494 | bool (*cb)(struct bridge *, struct iface *, | |
495 | void *aux), | |
496 | void *aux) | |
497 | { | |
498 | size_t i, j; | |
499 | ||
500 | for (i = 0; i < br->n_ports; ) { | |
501 | struct port *port = br->ports[i]; | |
502 | for (j = 0; j < port->n_ifaces; ) { | |
503 | struct iface *iface = port->ifaces[j]; | |
504 | if (cb(br, iface, aux)) { | |
505 | j++; | |
506 | } else { | |
507 | iface_destroy(iface); | |
508 | } | |
509 | } | |
510 | ||
511 | if (port->n_ifaces) { | |
512 | i++; | |
513 | } else { | |
514 | VLOG_ERR("%s port has no interfaces, dropping", port->name); | |
515 | port_destroy(port); | |
516 | } | |
517 | } | |
518 | } | |
519 | ||
064af421 | 520 | void |
76343538 | 521 | bridge_reconfigure(const struct ovsrec_open_vswitch *ovs_cfg) |
064af421 | 522 | { |
093e47f4 | 523 | struct ovsdb_idl_txn *txn; |
76343538 BP |
524 | struct shash old_br, new_br; |
525 | struct shash_node *node; | |
064af421 | 526 | struct bridge *br, *next; |
6ae39834 | 527 | size_t i; |
72b06300 | 528 | int sflow_bridge_number; |
064af421 BP |
529 | |
530 | COVERAGE_INC(bridge_reconfigure); | |
531 | ||
093e47f4 BP |
532 | txn = ovsdb_idl_txn_create(ovs_cfg->header_.table->idl); |
533 | ||
632d136c | 534 | /* Collect old and new bridges. */ |
76343538 BP |
535 | shash_init(&old_br); |
536 | shash_init(&new_br); | |
064af421 | 537 | LIST_FOR_EACH (br, struct bridge, node, &all_bridges) { |
76343538 BP |
538 | shash_add(&old_br, br->name, br); |
539 | } | |
540 | for (i = 0; i < ovs_cfg->n_bridges; i++) { | |
541 | const struct ovsrec_bridge *br_cfg = ovs_cfg->bridges[i]; | |
542 | if (!shash_add_once(&new_br, br_cfg->name, br_cfg)) { | |
543 | VLOG_WARN("more than one bridge named %s", br_cfg->name); | |
544 | } | |
064af421 | 545 | } |
064af421 BP |
546 | |
547 | /* Get rid of deleted bridges and add new bridges. */ | |
064af421 | 548 | LIST_FOR_EACH_SAFE (br, next, struct bridge, node, &all_bridges) { |
76343538 BP |
549 | struct ovsrec_bridge *br_cfg = shash_find_data(&new_br, br->name); |
550 | if (br_cfg) { | |
551 | br->cfg = br_cfg; | |
552 | } else { | |
064af421 BP |
553 | bridge_destroy(br); |
554 | } | |
555 | } | |
76343538 BP |
556 | SHASH_FOR_EACH (node, &new_br) { |
557 | const char *br_name = node->name; | |
558 | const struct ovsrec_bridge *br_cfg = node->data; | |
1a6f1e2a JG |
559 | br = shash_find_data(&old_br, br_name); |
560 | if (br) { | |
561 | /* If the bridge datapath type has changed, we need to tear it | |
562 | * down and recreate. */ | |
563 | if (strcmp(br->cfg->datapath_type, br_cfg->datapath_type)) { | |
564 | bridge_destroy(br); | |
565 | bridge_create(br_cfg); | |
fa33d64a | 566 | } |
1a6f1e2a JG |
567 | } else { |
568 | bridge_create(br_cfg); | |
064af421 BP |
569 | } |
570 | } | |
76343538 BP |
571 | shash_destroy(&old_br); |
572 | shash_destroy(&new_br); | |
064af421 BP |
573 | |
574 | #ifdef HAVE_OPENSSL | |
575 | /* Configure SSL. */ | |
76343538 | 576 | bridge_configure_ssl(ovs_cfg->ssl); |
064af421 BP |
577 | #endif |
578 | ||
579 | /* Reconfigure all bridges. */ | |
580 | LIST_FOR_EACH (br, struct bridge, node, &all_bridges) { | |
76343538 | 581 | bridge_reconfigure_one(ovs_cfg, br); |
064af421 BP |
582 | } |
583 | ||
584 | /* Add and delete ports on all datapaths. | |
585 | * | |
586 | * The kernel will reject any attempt to add a given port to a datapath if | |
587 | * that port already belongs to a different datapath, so we must do all | |
588 | * port deletions before any port additions. */ | |
589 | LIST_FOR_EACH (br, struct bridge, node, &all_bridges) { | |
590 | struct odp_port *dpif_ports; | |
591 | size_t n_dpif_ports; | |
76343538 | 592 | struct shash want_ifaces; |
064af421 | 593 | |
c228a364 | 594 | dpif_port_list(br->dpif, &dpif_ports, &n_dpif_ports); |
064af421 BP |
595 | bridge_get_all_ifaces(br, &want_ifaces); |
596 | for (i = 0; i < n_dpif_ports; i++) { | |
597 | const struct odp_port *p = &dpif_ports[i]; | |
76343538 | 598 | if (!shash_find(&want_ifaces, p->devname) |
064af421 | 599 | && strcmp(p->devname, br->name)) { |
c228a364 | 600 | int retval = dpif_port_del(br->dpif, p->port); |
064af421 | 601 | if (retval) { |
b29ba128 | 602 | VLOG_ERR("failed to remove %s interface from %s: %s", |
c228a364 | 603 | p->devname, dpif_name(br->dpif), |
b29ba128 | 604 | strerror(retval)); |
064af421 BP |
605 | } |
606 | } | |
607 | } | |
76343538 | 608 | shash_destroy(&want_ifaces); |
064af421 BP |
609 | free(dpif_ports); |
610 | } | |
611 | LIST_FOR_EACH (br, struct bridge, node, &all_bridges) { | |
612 | struct odp_port *dpif_ports; | |
613 | size_t n_dpif_ports; | |
76343538 BP |
614 | struct shash cur_ifaces, want_ifaces; |
615 | struct shash_node *node; | |
064af421 | 616 | |
76343538 | 617 | /* Get the set of interfaces currently in this datapath. */ |
c228a364 | 618 | dpif_port_list(br->dpif, &dpif_ports, &n_dpif_ports); |
76343538 | 619 | shash_init(&cur_ifaces); |
064af421 | 620 | for (i = 0; i < n_dpif_ports; i++) { |
76343538 BP |
621 | const char *name = dpif_ports[i].devname; |
622 | if (!shash_find(&cur_ifaces, name)) { | |
623 | shash_add(&cur_ifaces, name, NULL); | |
624 | } | |
064af421 BP |
625 | } |
626 | free(dpif_ports); | |
064af421 | 627 | |
76343538 BP |
628 | /* Get the set of interfaces we want on this datapath. */ |
629 | bridge_get_all_ifaces(br, &want_ifaces); | |
6c88d577 | 630 | |
76343538 BP |
631 | SHASH_FOR_EACH (node, &want_ifaces) { |
632 | const char *if_name = node->name; | |
633 | struct iface *iface = node->data; | |
35c979bf | 634 | |
76343538 BP |
635 | if (shash_find(&cur_ifaces, if_name)) { |
636 | /* Already exists, just reconfigure it. */ | |
637 | if (iface) { | |
149f577a | 638 | reconfigure_iface(iface->cfg, iface); |
76343538 BP |
639 | } |
640 | } else { | |
641 | /* Need to add to datapath. */ | |
642 | bool internal; | |
643 | int error; | |
644 | ||
76343538 | 645 | /* Add to datapath. */ |
a740f0de | 646 | internal = iface_is_internal(br, if_name); |
76343538 BP |
647 | error = dpif_port_add(br->dpif, if_name, |
648 | internal ? ODP_PORT_INTERNAL : 0, NULL); | |
649 | if (error == EFBIG) { | |
650 | VLOG_ERR("ran out of valid port numbers on %s", | |
651 | dpif_name(br->dpif)); | |
652 | break; | |
653 | } else if (error) { | |
654 | VLOG_ERR("failed to add %s interface to %s: %s", | |
655 | if_name, dpif_name(br->dpif), strerror(error)); | |
656 | } | |
064af421 BP |
657 | } |
658 | } | |
76343538 BP |
659 | shash_destroy(&cur_ifaces); |
660 | shash_destroy(&want_ifaces); | |
064af421 | 661 | } |
72b06300 | 662 | sflow_bridge_number = 0; |
064af421 BP |
663 | LIST_FOR_EACH (br, struct bridge, node, &all_bridges) { |
664 | uint8_t ea[8]; | |
665 | uint64_t dpid; | |
07c318f4 BP |
666 | struct iface *local_iface; |
667 | struct iface *hw_addr_iface; | |
093e47f4 | 668 | char *dpid_string; |
064af421 | 669 | |
064af421 | 670 | bridge_fetch_dp_ifaces(br); |
064af421 | 671 | |
149f577a | 672 | iterate_and_prune_ifaces(br, check_iface_netdev, NULL); |
07c318f4 | 673 | iterate_and_prune_ifaces(br, check_iface_dp_ifidx, NULL); |
064af421 BP |
674 | |
675 | /* Pick local port hardware address, datapath ID. */ | |
07c318f4 BP |
676 | bridge_pick_local_hw_addr(br, ea, &hw_addr_iface); |
677 | local_iface = bridge_get_local_iface(br); | |
064af421 | 678 | if (local_iface) { |
07c318f4 | 679 | int error = netdev_set_etheraddr(local_iface->netdev, ea); |
064af421 BP |
680 | if (error) { |
681 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
682 | VLOG_ERR_RL(&rl, "bridge %s: failed to set bridge " | |
683 | "Ethernet address: %s", | |
684 | br->name, strerror(error)); | |
685 | } | |
686 | } | |
687 | ||
07c318f4 | 688 | dpid = bridge_pick_datapath_id(br, ea, hw_addr_iface); |
064af421 BP |
689 | ofproto_set_datapath_id(br->ofproto, dpid); |
690 | ||
093e47f4 BP |
691 | dpid_string = xasprintf("%012"PRIx64, dpid); |
692 | ovsrec_bridge_set_datapath_id(br->cfg, dpid_string); | |
693 | free(dpid_string); | |
694 | ||
064af421 | 695 | /* Set NetFlow configuration on this bridge. */ |
76343538 BP |
696 | if (br->cfg->netflow) { |
697 | struct ovsrec_netflow *nf_cfg = br->cfg->netflow; | |
698 | struct netflow_options opts; | |
699 | ||
700 | memset(&opts, 0, sizeof opts); | |
701 | ||
702 | dpif_get_netflow_ids(br->dpif, &opts.engine_type, &opts.engine_id); | |
703 | if (nf_cfg->engine_type) { | |
cd746526 | 704 | opts.engine_type = *nf_cfg->engine_type; |
76343538 BP |
705 | } |
706 | if (nf_cfg->engine_id) { | |
cd746526 | 707 | opts.engine_id = *nf_cfg->engine_id; |
76343538 BP |
708 | } |
709 | ||
710 | opts.active_timeout = nf_cfg->active_timeout; | |
711 | if (!opts.active_timeout) { | |
712 | opts.active_timeout = -1; | |
713 | } else if (opts.active_timeout < 0) { | |
e9e2856e JG |
714 | VLOG_WARN("bridge %s: active timeout interval set to negative " |
715 | "value, using default instead (%d seconds)", br->name, | |
716 | NF_ACTIVE_TIMEOUT_DEFAULT); | |
717 | opts.active_timeout = -1; | |
76343538 BP |
718 | } |
719 | ||
720 | opts.add_id_to_iface = nf_cfg->add_id_to_interface; | |
721 | if (opts.add_id_to_iface) { | |
722 | if (opts.engine_id > 0x7f) { | |
723 | VLOG_WARN("bridge %s: netflow port mangling may conflict " | |
724 | "with another vswitch, choose an engine id less " | |
725 | "than 128", br->name); | |
726 | } | |
727 | if (br->n_ports > 508) { | |
728 | VLOG_WARN("bridge %s: netflow port mangling will conflict " | |
729 | "with another port when more than 508 ports are " | |
730 | "used", br->name); | |
731 | } | |
732 | } | |
733 | ||
734 | opts.collectors.n = nf_cfg->n_targets; | |
735 | opts.collectors.names = nf_cfg->targets; | |
736 | if (ofproto_set_netflow(br->ofproto, &opts)) { | |
737 | VLOG_ERR("bridge %s: problem setting netflow collectors", | |
738 | br->name); | |
739 | } | |
740 | } else { | |
741 | ofproto_set_netflow(br->ofproto, NULL); | |
742 | } | |
064af421 | 743 | |
a4af0040 JP |
744 | /* Set sFlow configuration on this bridge. */ |
745 | if (br->cfg->sflow) { | |
d49d354b JP |
746 | const struct ovsrec_sflow *sflow_cfg = br->cfg->sflow; |
747 | const struct ovsrec_controller *ctrl; | |
72b06300 BP |
748 | struct ofproto_sflow_options oso; |
749 | ||
a4af0040 JP |
750 | memset(&oso, 0, sizeof oso); |
751 | ||
752 | oso.targets.n = sflow_cfg->n_targets; | |
753 | oso.targets.names = sflow_cfg->targets; | |
72b06300 BP |
754 | |
755 | oso.sampling_rate = SFL_DEFAULT_SAMPLING_RATE; | |
a4af0040 JP |
756 | if (sflow_cfg->sampling) { |
757 | oso.sampling_rate = *sflow_cfg->sampling; | |
72b06300 BP |
758 | } |
759 | ||
760 | oso.polling_interval = SFL_DEFAULT_POLLING_INTERVAL; | |
a4af0040 JP |
761 | if (sflow_cfg->polling) { |
762 | oso.polling_interval = *sflow_cfg->polling; | |
72b06300 BP |
763 | } |
764 | ||
765 | oso.header_len = SFL_DEFAULT_HEADER_SIZE; | |
a4af0040 JP |
766 | if (sflow_cfg->header) { |
767 | oso.header_len = *sflow_cfg->header; | |
72b06300 BP |
768 | } |
769 | ||
770 | oso.sub_id = sflow_bridge_number++; | |
a4af0040 JP |
771 | oso.agent_device = sflow_cfg->agent; |
772 | ||
a4af0040 JP |
773 | ctrl = bridge_get_controller(ovs_cfg, br); |
774 | oso.control_ip = ctrl ? ctrl->local_ip : NULL; | |
72b06300 BP |
775 | ofproto_set_sflow(br->ofproto, &oso); |
776 | ||
777 | svec_destroy(&oso.targets); | |
778 | } else { | |
779 | ofproto_set_sflow(br->ofproto, NULL); | |
780 | } | |
781 | ||
064af421 BP |
782 | /* Update the controller and related settings. It would be more |
783 | * straightforward to call this from bridge_reconfigure_one(), but we | |
784 | * can't do it there for two reasons. First, and most importantly, at | |
785 | * that point we don't know the dp_ifidx of any interfaces that have | |
786 | * been added to the bridge (because we haven't actually added them to | |
787 | * the datapath). Second, at that point we haven't set the datapath ID | |
788 | * yet; when a controller is configured, resetting the datapath ID will | |
789 | * immediately disconnect from the controller, so it's better to set | |
790 | * the datapath ID before the controller. */ | |
76343538 | 791 | bridge_reconfigure_controller(ovs_cfg, br); |
064af421 BP |
792 | } |
793 | LIST_FOR_EACH (br, struct bridge, node, &all_bridges) { | |
794 | for (i = 0; i < br->n_ports; i++) { | |
795 | struct port *port = br->ports[i]; | |
52df17e7 | 796 | |
064af421 | 797 | port_update_vlan_compat(port); |
0c6aea3f | 798 | port_update_bonding(port); |
064af421 BP |
799 | } |
800 | } | |
801 | LIST_FOR_EACH (br, struct bridge, node, &all_bridges) { | |
4d678233 | 802 | iterate_and_prune_ifaces(br, set_iface_properties, NULL); |
064af421 | 803 | } |
093e47f4 | 804 | |
b54e22e9 BP |
805 | ovsrec_open_vswitch_set_cur_cfg(ovs_cfg, ovs_cfg->next_cfg); |
806 | ||
093e47f4 BP |
807 | ovsdb_idl_txn_commit(txn); |
808 | ovsdb_idl_txn_destroy(txn); /* XXX */ | |
809 | } | |
810 | ||
811 | static const char * | |
c8143c88 | 812 | get_ovsrec_key_value(const char *key, char **keys, char **values, size_t n) |
093e47f4 BP |
813 | { |
814 | size_t i; | |
815 | ||
c8143c88 BP |
816 | for (i = 0; i < n; i++) { |
817 | if (!strcmp(keys[i], key)) { | |
818 | return values[i]; | |
093e47f4 BP |
819 | } |
820 | } | |
821 | return NULL; | |
064af421 BP |
822 | } |
823 | ||
c8143c88 BP |
824 | static const char * |
825 | bridge_get_other_config(const struct ovsrec_bridge *br_cfg, const char *key) | |
826 | { | |
827 | return get_ovsrec_key_value(key, | |
828 | br_cfg->key_other_config, | |
829 | br_cfg->value_other_config, | |
830 | br_cfg->n_other_config); | |
831 | } | |
832 | ||
064af421 BP |
833 | static void |
834 | bridge_pick_local_hw_addr(struct bridge *br, uint8_t ea[ETH_ADDR_LEN], | |
07c318f4 | 835 | struct iface **hw_addr_iface) |
064af421 | 836 | { |
093e47f4 | 837 | const char *hwaddr; |
064af421 BP |
838 | size_t i, j; |
839 | int error; | |
840 | ||
07c318f4 | 841 | *hw_addr_iface = NULL; |
064af421 BP |
842 | |
843 | /* Did the user request a particular MAC? */ | |
093e47f4 BP |
844 | hwaddr = bridge_get_other_config(br->cfg, "hwaddr"); |
845 | if (hwaddr && eth_addr_from_string(hwaddr, ea)) { | |
064af421 BP |
846 | if (eth_addr_is_multicast(ea)) { |
847 | VLOG_ERR("bridge %s: cannot set MAC address to multicast " | |
848 | "address "ETH_ADDR_FMT, br->name, ETH_ADDR_ARGS(ea)); | |
849 | } else if (eth_addr_is_zero(ea)) { | |
850 | VLOG_ERR("bridge %s: cannot set MAC address to zero", br->name); | |
851 | } else { | |
852 | return; | |
853 | } | |
854 | } | |
855 | ||
141f4942 BP |
856 | /* Otherwise choose the minimum non-local MAC address among all of the |
857 | * interfaces. */ | |
064af421 BP |
858 | memset(ea, 0xff, sizeof ea); |
859 | for (i = 0; i < br->n_ports; i++) { | |
860 | struct port *port = br->ports[i]; | |
58b7527e | 861 | uint8_t iface_ea[ETH_ADDR_LEN]; |
58b7527e BP |
862 | struct iface *iface; |
863 | ||
864 | /* Mirror output ports don't participate. */ | |
064af421 BP |
865 | if (port->is_mirror_output_port) { |
866 | continue; | |
867 | } | |
58b7527e BP |
868 | |
869 | /* Choose the MAC address to represent the port. */ | |
76343538 | 870 | if (port->cfg->mac && eth_addr_from_string(port->cfg->mac, iface_ea)) { |
ba09980a BP |
871 | /* Find the interface with this Ethernet address (if any) so that |
872 | * we can provide the correct devname to the caller. */ | |
873 | iface = NULL; | |
874 | for (j = 0; j < port->n_ifaces; j++) { | |
875 | struct iface *candidate = port->ifaces[j]; | |
876 | uint8_t candidate_ea[ETH_ADDR_LEN]; | |
8fef8c71 | 877 | if (!netdev_get_etheraddr(candidate->netdev, candidate_ea) |
ba09980a BP |
878 | && eth_addr_equals(iface_ea, candidate_ea)) { |
879 | iface = candidate; | |
880 | } | |
881 | } | |
58b7527e BP |
882 | } else { |
883 | /* Choose the interface whose MAC address will represent the port. | |
884 | * The Linux kernel bonding code always chooses the MAC address of | |
885 | * the first slave added to a bond, and the Fedora networking | |
886 | * scripts always add slaves to a bond in alphabetical order, so | |
887 | * for compatibility we choose the interface with the name that is | |
888 | * first in alphabetical order. */ | |
889 | iface = port->ifaces[0]; | |
890 | for (j = 1; j < port->n_ifaces; j++) { | |
891 | struct iface *candidate = port->ifaces[j]; | |
892 | if (strcmp(candidate->name, iface->name) < 0) { | |
893 | iface = candidate; | |
894 | } | |
895 | } | |
896 | ||
897 | /* The local port doesn't count (since we're trying to choose its | |
141f4942 BP |
898 | * MAC address anyway). */ |
899 | if (iface->dp_ifidx == ODPP_LOCAL) { | |
064af421 BP |
900 | continue; |
901 | } | |
58b7527e BP |
902 | |
903 | /* Grab MAC. */ | |
07c318f4 | 904 | error = netdev_get_etheraddr(iface->netdev, iface_ea); |
58b7527e | 905 | if (error) { |
064af421 BP |
906 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
907 | VLOG_ERR_RL(&rl, "failed to obtain Ethernet address of %s: %s", | |
908 | iface->name, strerror(error)); | |
58b7527e | 909 | continue; |
064af421 BP |
910 | } |
911 | } | |
58b7527e BP |
912 | |
913 | /* Compare against our current choice. */ | |
914 | if (!eth_addr_is_multicast(iface_ea) && | |
141f4942 | 915 | !eth_addr_is_local(iface_ea) && |
58b7527e BP |
916 | !eth_addr_is_reserved(iface_ea) && |
917 | !eth_addr_is_zero(iface_ea) && | |
918 | memcmp(iface_ea, ea, ETH_ADDR_LEN) < 0) | |
919 | { | |
0babc06f | 920 | memcpy(ea, iface_ea, ETH_ADDR_LEN); |
8fef8c71 | 921 | *hw_addr_iface = iface; |
58b7527e | 922 | } |
064af421 | 923 | } |
141f4942 | 924 | if (eth_addr_is_multicast(ea)) { |
064af421 | 925 | memcpy(ea, br->default_ea, ETH_ADDR_LEN); |
07c318f4 | 926 | *hw_addr_iface = NULL; |
064af421 BP |
927 | VLOG_WARN("bridge %s: using default bridge Ethernet " |
928 | "address "ETH_ADDR_FMT, br->name, ETH_ADDR_ARGS(ea)); | |
929 | } else { | |
930 | VLOG_DBG("bridge %s: using bridge Ethernet address "ETH_ADDR_FMT, | |
931 | br->name, ETH_ADDR_ARGS(ea)); | |
932 | } | |
933 | } | |
934 | ||
935 | /* Choose and returns the datapath ID for bridge 'br' given that the bridge | |
936 | * Ethernet address is 'bridge_ea'. If 'bridge_ea' is the Ethernet address of | |
07c318f4 BP |
937 | * an interface on 'br', then that interface must be passed in as |
938 | * 'hw_addr_iface'; if 'bridge_ea' was derived some other way, then | |
939 | * 'hw_addr_iface' must be passed in as a null pointer. */ | |
064af421 BP |
940 | static uint64_t |
941 | bridge_pick_datapath_id(struct bridge *br, | |
942 | const uint8_t bridge_ea[ETH_ADDR_LEN], | |
07c318f4 | 943 | struct iface *hw_addr_iface) |
064af421 BP |
944 | { |
945 | /* | |
946 | * The procedure for choosing a bridge MAC address will, in the most | |
947 | * ordinary case, also choose a unique MAC that we can use as a datapath | |
948 | * ID. In some special cases, though, multiple bridges will end up with | |
949 | * the same MAC address. This is OK for the bridges, but it will confuse | |
950 | * the OpenFlow controller, because each datapath needs a unique datapath | |
951 | * ID. | |
952 | * | |
953 | * Datapath IDs must be unique. It is also very desirable that they be | |
954 | * stable from one run to the next, so that policy set on a datapath | |
955 | * "sticks". | |
956 | */ | |
093e47f4 | 957 | const char *datapath_id; |
064af421 BP |
958 | uint64_t dpid; |
959 | ||
093e47f4 BP |
960 | datapath_id = bridge_get_other_config(br->cfg, "datapath-id"); |
961 | if (datapath_id && dpid_from_string(datapath_id, &dpid)) { | |
064af421 BP |
962 | return dpid; |
963 | } | |
964 | ||
07c318f4 | 965 | if (hw_addr_iface) { |
064af421 | 966 | int vlan; |
b2f17b15 | 967 | if (!netdev_get_vlan_vid(hw_addr_iface->netdev, &vlan)) { |
064af421 BP |
968 | /* |
969 | * A bridge whose MAC address is taken from a VLAN network device | |
970 | * (that is, a network device created with vconfig(8) or similar | |
971 | * tool) will have the same MAC address as a bridge on the VLAN | |
972 | * device's physical network device. | |
973 | * | |
974 | * Handle this case by hashing the physical network device MAC | |
975 | * along with the VLAN identifier. | |
976 | */ | |
977 | uint8_t buf[ETH_ADDR_LEN + 2]; | |
978 | memcpy(buf, bridge_ea, ETH_ADDR_LEN); | |
979 | buf[ETH_ADDR_LEN] = vlan >> 8; | |
980 | buf[ETH_ADDR_LEN + 1] = vlan; | |
981 | return dpid_from_hash(buf, sizeof buf); | |
982 | } else { | |
983 | /* | |
984 | * Assume that this bridge's MAC address is unique, since it | |
985 | * doesn't fit any of the cases we handle specially. | |
986 | */ | |
987 | } | |
988 | } else { | |
989 | /* | |
990 | * A purely internal bridge, that is, one that has no non-virtual | |
991 | * network devices on it at all, is more difficult because it has no | |
992 | * natural unique identifier at all. | |
993 | * | |
994 | * When the host is a XenServer, we handle this case by hashing the | |
995 | * host's UUID with the name of the bridge. Names of bridges are | |
996 | * persistent across XenServer reboots, although they can be reused if | |
997 | * an internal network is destroyed and then a new one is later | |
998 | * created, so this is fairly effective. | |
999 | * | |
1000 | * When the host is not a XenServer, we punt by using a random MAC | |
1001 | * address on each run. | |
1002 | */ | |
1003 | const char *host_uuid = xenserver_get_host_uuid(); | |
1004 | if (host_uuid) { | |
1005 | char *combined = xasprintf("%s,%s", host_uuid, br->name); | |
1006 | dpid = dpid_from_hash(combined, strlen(combined)); | |
1007 | free(combined); | |
1008 | return dpid; | |
1009 | } | |
1010 | } | |
1011 | ||
1012 | return eth_addr_to_uint64(bridge_ea); | |
1013 | } | |
1014 | ||
1015 | static uint64_t | |
1016 | dpid_from_hash(const void *data, size_t n) | |
1017 | { | |
5eccf359 | 1018 | uint8_t hash[SHA1_DIGEST_SIZE]; |
064af421 BP |
1019 | |
1020 | BUILD_ASSERT_DECL(sizeof hash >= ETH_ADDR_LEN); | |
5eccf359 | 1021 | sha1_bytes(data, n, hash); |
064af421 BP |
1022 | eth_addr_mark_random(hash); |
1023 | return eth_addr_to_uint64(hash); | |
1024 | } | |
1025 | ||
1026 | int | |
1027 | bridge_run(void) | |
1028 | { | |
1029 | struct bridge *br, *next; | |
1030 | int retval; | |
1031 | ||
1032 | retval = 0; | |
1033 | LIST_FOR_EACH_SAFE (br, next, struct bridge, node, &all_bridges) { | |
1034 | int error = bridge_run_one(br); | |
1035 | if (error) { | |
1036 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1037 | VLOG_ERR_RL(&rl, "bridge %s: datapath was destroyed externally, " | |
1038 | "forcing reconfiguration", br->name); | |
1039 | if (!retval) { | |
1040 | retval = error; | |
1041 | } | |
1042 | } | |
1043 | } | |
1044 | return retval; | |
1045 | } | |
1046 | ||
1047 | void | |
1048 | bridge_wait(void) | |
1049 | { | |
1050 | struct bridge *br; | |
1051 | ||
1052 | LIST_FOR_EACH (br, struct bridge, node, &all_bridges) { | |
1053 | ofproto_wait(br->ofproto); | |
1054 | if (br->controller) { | |
1055 | continue; | |
1056 | } | |
1057 | ||
93dfc067 | 1058 | mac_learning_wait(br->ml); |
064af421 | 1059 | bond_wait(br); |
064af421 BP |
1060 | } |
1061 | } | |
1062 | ||
1063 | /* Forces 'br' to revalidate all of its flows. This is appropriate when 'br''s | |
1064 | * configuration changes. */ | |
1065 | static void | |
1066 | bridge_flush(struct bridge *br) | |
1067 | { | |
1068 | COVERAGE_INC(bridge_flush); | |
1069 | br->flush = true; | |
93dfc067 | 1070 | mac_learning_flush(br->ml); |
064af421 | 1071 | } |
07c318f4 BP |
1072 | |
1073 | /* Returns the 'br' interface for the ODPP_LOCAL port, or null if 'br' has no | |
1074 | * such interface. */ | |
1075 | static struct iface * | |
1076 | bridge_get_local_iface(struct bridge *br) | |
1077 | { | |
1078 | size_t i, j; | |
1079 | ||
1080 | for (i = 0; i < br->n_ports; i++) { | |
1081 | struct port *port = br->ports[i]; | |
1082 | for (j = 0; j < port->n_ifaces; j++) { | |
1083 | struct iface *iface = port->ifaces[j]; | |
1084 | if (iface->dp_ifidx == ODPP_LOCAL) { | |
1085 | return iface; | |
1086 | } | |
1087 | } | |
1088 | } | |
1089 | ||
1090 | return NULL; | |
1091 | } | |
064af421 | 1092 | \f |
8c4c1387 BP |
1093 | /* Bridge unixctl user interface functions. */ |
1094 | static void | |
8ca79daa | 1095 | bridge_unixctl_fdb_show(struct unixctl_conn *conn, |
c69ee87c | 1096 | const char *args, void *aux OVS_UNUSED) |
8c4c1387 BP |
1097 | { |
1098 | struct ds ds = DS_EMPTY_INITIALIZER; | |
1099 | const struct bridge *br; | |
93dfc067 | 1100 | const struct mac_entry *e; |
8c4c1387 BP |
1101 | |
1102 | br = bridge_lookup(args); | |
1103 | if (!br) { | |
1104 | unixctl_command_reply(conn, 501, "no such bridge"); | |
1105 | return; | |
1106 | } | |
1107 | ||
1108 | ds_put_cstr(&ds, " port VLAN MAC Age\n"); | |
93dfc067 JG |
1109 | LIST_FOR_EACH (e, struct mac_entry, lru_node, &br->ml->lrus) { |
1110 | if (e->port < 0 || e->port >= br->n_ports) { | |
1111 | continue; | |
8c4c1387 | 1112 | } |
93dfc067 JG |
1113 | ds_put_format(&ds, "%5d %4d "ETH_ADDR_FMT" %3d\n", |
1114 | br->ports[e->port]->ifaces[0]->dp_ifidx, | |
1115 | e->vlan, ETH_ADDR_ARGS(e->mac), mac_entry_age(e)); | |
8c4c1387 BP |
1116 | } |
1117 | unixctl_command_reply(conn, 200, ds_cstr(&ds)); | |
1118 | ds_destroy(&ds); | |
1119 | } | |
1120 | \f | |
064af421 | 1121 | /* Bridge reconfiguration functions. */ |
064af421 | 1122 | static struct bridge * |
1a6f1e2a | 1123 | bridge_create(const struct ovsrec_bridge *br_cfg) |
064af421 BP |
1124 | { |
1125 | struct bridge *br; | |
1126 | int error; | |
1127 | ||
1a6f1e2a | 1128 | assert(!bridge_lookup(br_cfg->name)); |
ec6fde61 | 1129 | br = xzalloc(sizeof *br); |
064af421 | 1130 | |
1a6f1e2a JG |
1131 | error = dpif_create_and_open(br_cfg->name, br_cfg->datapath_type, |
1132 | &br->dpif); | |
efacbce6 | 1133 | if (error) { |
064af421 BP |
1134 | free(br); |
1135 | return NULL; | |
1136 | } | |
efacbce6 | 1137 | dpif_flow_flush(br->dpif); |
064af421 | 1138 | |
1a6f1e2a JG |
1139 | error = ofproto_create(br_cfg->name, br_cfg->datapath_type, &bridge_ofhooks, |
1140 | br, &br->ofproto); | |
064af421 | 1141 | if (error) { |
1a6f1e2a JG |
1142 | VLOG_ERR("failed to create switch %s: %s", br_cfg->name, |
1143 | strerror(error)); | |
c228a364 BP |
1144 | dpif_delete(br->dpif); |
1145 | dpif_close(br->dpif); | |
064af421 BP |
1146 | free(br); |
1147 | return NULL; | |
1148 | } | |
1149 | ||
1a6f1e2a JG |
1150 | br->name = xstrdup(br_cfg->name); |
1151 | br->cfg = br_cfg; | |
064af421 BP |
1152 | br->ml = mac_learning_create(); |
1153 | br->sent_config_request = false; | |
70150daf | 1154 | eth_addr_nicira_random(br->default_ea); |
064af421 BP |
1155 | |
1156 | port_array_init(&br->ifaces); | |
1157 | ||
1158 | br->flush = false; | |
064af421 BP |
1159 | |
1160 | list_push_back(&all_bridges, &br->node); | |
1161 | ||
c228a364 | 1162 | VLOG_INFO("created bridge %s on %s", br->name, dpif_name(br->dpif)); |
064af421 BP |
1163 | |
1164 | return br; | |
1165 | } | |
1166 | ||
1167 | static void | |
1168 | bridge_destroy(struct bridge *br) | |
1169 | { | |
1170 | if (br) { | |
1171 | int error; | |
1172 | ||
1173 | while (br->n_ports > 0) { | |
1174 | port_destroy(br->ports[br->n_ports - 1]); | |
1175 | } | |
1176 | list_remove(&br->node); | |
c228a364 | 1177 | error = dpif_delete(br->dpif); |
064af421 | 1178 | if (error && error != ENOENT) { |
b29ba128 | 1179 | VLOG_ERR("failed to delete %s: %s", |
c228a364 | 1180 | dpif_name(br->dpif), strerror(error)); |
064af421 | 1181 | } |
c228a364 | 1182 | dpif_close(br->dpif); |
064af421 BP |
1183 | ofproto_destroy(br->ofproto); |
1184 | free(br->controller); | |
1185 | mac_learning_destroy(br->ml); | |
1186 | port_array_destroy(&br->ifaces); | |
1187 | free(br->ports); | |
1188 | free(br->name); | |
1189 | free(br); | |
1190 | } | |
1191 | } | |
1192 | ||
1193 | static struct bridge * | |
1194 | bridge_lookup(const char *name) | |
1195 | { | |
1196 | struct bridge *br; | |
1197 | ||
1198 | LIST_FOR_EACH (br, struct bridge, node, &all_bridges) { | |
1199 | if (!strcmp(br->name, name)) { | |
1200 | return br; | |
1201 | } | |
1202 | } | |
1203 | return NULL; | |
1204 | } | |
1205 | ||
1206 | bool | |
1207 | bridge_exists(const char *name) | |
1208 | { | |
1209 | return bridge_lookup(name) ? true : false; | |
1210 | } | |
1211 | ||
1212 | uint64_t | |
1213 | bridge_get_datapathid(const char *name) | |
1214 | { | |
1215 | struct bridge *br = bridge_lookup(name); | |
1216 | return br ? ofproto_get_datapath_id(br->ofproto) : 0; | |
1217 | } | |
1218 | ||
4f2cad2c JP |
1219 | /* Handle requests for a listing of all flows known by the OpenFlow |
1220 | * stack, including those normally hidden. */ | |
1221 | static void | |
8ca79daa | 1222 | bridge_unixctl_dump_flows(struct unixctl_conn *conn, |
c69ee87c | 1223 | const char *args, void *aux OVS_UNUSED) |
4f2cad2c JP |
1224 | { |
1225 | struct bridge *br; | |
1226 | struct ds results; | |
1227 | ||
1228 | br = bridge_lookup(args); | |
1229 | if (!br) { | |
1230 | unixctl_command_reply(conn, 501, "Unknown bridge"); | |
1231 | return; | |
1232 | } | |
1233 | ||
1234 | ds_init(&results); | |
1235 | ofproto_get_all_flows(br->ofproto, &results); | |
1236 | ||
1237 | unixctl_command_reply(conn, 200, ds_cstr(&results)); | |
1238 | ds_destroy(&results); | |
1239 | } | |
1240 | ||
064af421 BP |
1241 | static int |
1242 | bridge_run_one(struct bridge *br) | |
1243 | { | |
1244 | int error; | |
1245 | ||
1246 | error = ofproto_run1(br->ofproto); | |
1247 | if (error) { | |
1248 | return error; | |
1249 | } | |
1250 | ||
93dfc067 | 1251 | mac_learning_run(br->ml, ofproto_get_revalidate_set(br->ofproto)); |
064af421 | 1252 | bond_run(br); |
064af421 BP |
1253 | |
1254 | error = ofproto_run2(br->ofproto, br->flush); | |
1255 | br->flush = false; | |
1256 | ||
1257 | return error; | |
1258 | } | |
1259 | ||
76343538 BP |
1260 | static const struct ovsrec_controller * |
1261 | bridge_get_controller(const struct ovsrec_open_vswitch *ovs_cfg, | |
1262 | const struct bridge *br) | |
064af421 | 1263 | { |
76343538 | 1264 | const struct ovsrec_controller *controller; |
064af421 | 1265 | |
76343538 BP |
1266 | controller = (br->cfg->controller ? br->cfg->controller |
1267 | : ovs_cfg->controller ? ovs_cfg->controller | |
1268 | : NULL); | |
1269 | ||
1270 | if (controller && !strcmp(controller->target, "none")) { | |
1271 | return NULL; | |
064af421 | 1272 | } |
76343538 BP |
1273 | |
1274 | return controller; | |
064af421 BP |
1275 | } |
1276 | ||
6ae39834 BP |
1277 | static bool |
1278 | check_duplicate_ifaces(struct bridge *br, struct iface *iface, void *ifaces_) | |
1279 | { | |
1280 | struct svec *ifaces = ifaces_; | |
1281 | if (!svec_contains(ifaces, iface->name)) { | |
1282 | svec_add(ifaces, iface->name); | |
1283 | svec_sort(ifaces); | |
1284 | return true; | |
1285 | } else { | |
1286 | VLOG_ERR("bridge %s: %s interface is on multiple ports, " | |
1287 | "removing from %s", | |
1288 | br->name, iface->name, iface->port->name); | |
1289 | return false; | |
1290 | } | |
1291 | } | |
1292 | ||
23ff2821 | 1293 | static void |
6501fda9 | 1294 | bridge_update_desc(struct bridge *br OVS_UNUSED) |
23ff2821 JP |
1295 | { |
1296 | #if 0 | |
1297 | bool changed = false; | |
1298 | const char *desc; | |
1299 | ||
1300 | desc = cfg_get_string(0, "bridge.%s.mfr-desc", br->name); | |
1301 | if (desc != br->mfr_desc) { | |
1302 | free(br->mfr_desc); | |
1303 | if (desc) { | |
1304 | br->mfr_desc = xstrdup(desc); | |
1305 | } else { | |
1306 | br->mfr_desc = xstrdup(DEFAULT_MFR_DESC); | |
1307 | } | |
1308 | changed = true; | |
1309 | } | |
1310 | ||
1311 | desc = cfg_get_string(0, "bridge.%s.hw-desc", br->name); | |
1312 | if (desc != br->hw_desc) { | |
1313 | free(br->hw_desc); | |
1314 | if (desc) { | |
1315 | br->hw_desc = xstrdup(desc); | |
1316 | } else { | |
1317 | br->hw_desc = xstrdup(DEFAULT_HW_DESC); | |
1318 | } | |
1319 | changed = true; | |
1320 | } | |
1321 | ||
1322 | desc = cfg_get_string(0, "bridge.%s.sw-desc", br->name); | |
1323 | if (desc != br->sw_desc) { | |
1324 | free(br->sw_desc); | |
1325 | if (desc) { | |
1326 | br->sw_desc = xstrdup(desc); | |
1327 | } else { | |
1328 | br->sw_desc = xstrdup(DEFAULT_SW_DESC); | |
1329 | } | |
1330 | changed = true; | |
1331 | } | |
1332 | ||
1333 | desc = cfg_get_string(0, "bridge.%s.serial-desc", br->name); | |
1334 | if (desc != br->serial_desc) { | |
1335 | free(br->serial_desc); | |
1336 | if (desc) { | |
1337 | br->serial_desc = xstrdup(desc); | |
1338 | } else { | |
1339 | br->serial_desc = xstrdup(DEFAULT_SERIAL_DESC); | |
1340 | } | |
1341 | changed = true; | |
1342 | } | |
1343 | ||
1344 | desc = cfg_get_string(0, "bridge.%s.dp-desc", br->name); | |
1345 | if (desc != br->dp_desc) { | |
1346 | free(br->dp_desc); | |
1347 | if (desc) { | |
1348 | br->dp_desc = xstrdup(desc); | |
1349 | } else { | |
1350 | br->dp_desc = xstrdup(DEFAULT_DP_DESC); | |
1351 | } | |
1352 | changed = true; | |
1353 | } | |
1354 | ||
1355 | if (changed) { | |
1356 | ofproto_set_desc(br->ofproto, br->mfr_desc, br->hw_desc, | |
1357 | br->sw_desc, br->serial_desc, br->dp_desc); | |
1358 | } | |
1359 | #endif | |
1360 | } | |
1361 | ||
064af421 | 1362 | static void |
76343538 BP |
1363 | bridge_reconfigure_one(const struct ovsrec_open_vswitch *ovs_cfg, |
1364 | struct bridge *br) | |
064af421 | 1365 | { |
76343538 BP |
1366 | struct shash old_ports, new_ports; |
1367 | struct svec ifaces; | |
064af421 BP |
1368 | struct svec listeners, old_listeners; |
1369 | struct svec snoops, old_snoops; | |
76343538 | 1370 | struct shash_node *node; |
6ae39834 | 1371 | size_t i; |
064af421 BP |
1372 | |
1373 | /* Collect old ports. */ | |
76343538 | 1374 | shash_init(&old_ports); |
064af421 | 1375 | for (i = 0; i < br->n_ports; i++) { |
76343538 | 1376 | shash_add(&old_ports, br->ports[i]->name, br->ports[i]); |
064af421 | 1377 | } |
064af421 BP |
1378 | |
1379 | /* Collect new ports. */ | |
76343538 BP |
1380 | shash_init(&new_ports); |
1381 | for (i = 0; i < br->cfg->n_ports; i++) { | |
1382 | const char *name = br->cfg->ports[i]->name; | |
1383 | if (!shash_add_once(&new_ports, name, br->cfg->ports[i])) { | |
1384 | VLOG_WARN("bridge %s: %s specified twice as bridge port", | |
1385 | br->name, name); | |
1386 | } | |
1387 | } | |
e073f944 BP |
1388 | |
1389 | /* If we have a controller, then we need a local port. Complain if the | |
1390 | * user didn't specify one. | |
1391 | * | |
1392 | * XXX perhaps we should synthesize a port ourselves in this case. */ | |
76343538 | 1393 | if (bridge_get_controller(ovs_cfg, br)) { |
72865317 BP |
1394 | char local_name[IF_NAMESIZE]; |
1395 | int error; | |
1396 | ||
1397 | error = dpif_port_get_name(br->dpif, ODPP_LOCAL, | |
1398 | local_name, sizeof local_name); | |
e073f944 BP |
1399 | if (!error && !shash_find(&new_ports, local_name)) { |
1400 | VLOG_WARN("bridge %s: controller specified but no local port " | |
1401 | "(port named %s) defined", | |
1402 | br->name, local_name); | |
72865317 | 1403 | } |
064af421 | 1404 | } |
064af421 | 1405 | |
064af421 | 1406 | /* Get rid of deleted ports and add new ports. */ |
76343538 BP |
1407 | SHASH_FOR_EACH (node, &old_ports) { |
1408 | if (!shash_find(&new_ports, node->name)) { | |
1409 | port_destroy(node->data); | |
064af421 BP |
1410 | } |
1411 | } | |
76343538 BP |
1412 | SHASH_FOR_EACH (node, &new_ports) { |
1413 | struct port *port = shash_find_data(&old_ports, node->name); | |
1414 | if (!port) { | |
1415 | port = port_create(br, node->name); | |
064af421 | 1416 | } |
76343538 | 1417 | port_reconfigure(port, node->data); |
064af421 | 1418 | } |
76343538 BP |
1419 | shash_destroy(&old_ports); |
1420 | shash_destroy(&new_ports); | |
064af421 BP |
1421 | |
1422 | /* Check and delete duplicate interfaces. */ | |
1423 | svec_init(&ifaces); | |
6ae39834 | 1424 | iterate_and_prune_ifaces(br, check_duplicate_ifaces, &ifaces); |
064af421 BP |
1425 | svec_destroy(&ifaces); |
1426 | ||
1427 | /* Delete all flows if we're switching from connected to standalone or vice | |
1428 | * versa. (XXX Should we delete all flows if we are switching from one | |
1429 | * controller to another?) */ | |
1430 | ||
76343538 | 1431 | #if 0 |
064af421 BP |
1432 | /* Configure OpenFlow management listeners. */ |
1433 | svec_init(&listeners); | |
1434 | cfg_get_all_strings(&listeners, "bridge.%s.openflow.listeners", br->name); | |
1435 | if (!listeners.n) { | |
1436 | svec_add_nocopy(&listeners, xasprintf("punix:%s/%s.mgmt", | |
1437 | ovs_rundir, br->name)); | |
1438 | } else if (listeners.n == 1 && !strcmp(listeners.names[0], "none")) { | |
1439 | svec_clear(&listeners); | |
1440 | } | |
1441 | svec_sort_unique(&listeners); | |
1442 | ||
1443 | svec_init(&old_listeners); | |
1444 | ofproto_get_listeners(br->ofproto, &old_listeners); | |
1445 | svec_sort_unique(&old_listeners); | |
1446 | ||
1447 | if (!svec_equal(&listeners, &old_listeners)) { | |
1448 | ofproto_set_listeners(br->ofproto, &listeners); | |
1449 | } | |
1450 | svec_destroy(&listeners); | |
1451 | svec_destroy(&old_listeners); | |
1452 | ||
1453 | /* Configure OpenFlow controller connection snooping. */ | |
1454 | svec_init(&snoops); | |
1455 | cfg_get_all_strings(&snoops, "bridge.%s.openflow.snoops", br->name); | |
1456 | if (!snoops.n) { | |
1457 | svec_add_nocopy(&snoops, xasprintf("punix:%s/%s.snoop", | |
1458 | ovs_rundir, br->name)); | |
1459 | } else if (snoops.n == 1 && !strcmp(snoops.names[0], "none")) { | |
1460 | svec_clear(&snoops); | |
1461 | } | |
1462 | svec_sort_unique(&snoops); | |
1463 | ||
1464 | svec_init(&old_snoops); | |
1465 | ofproto_get_snoops(br->ofproto, &old_snoops); | |
1466 | svec_sort_unique(&old_snoops); | |
1467 | ||
1468 | if (!svec_equal(&snoops, &old_snoops)) { | |
1469 | ofproto_set_snoops(br->ofproto, &snoops); | |
1470 | } | |
1471 | svec_destroy(&snoops); | |
1472 | svec_destroy(&old_snoops); | |
76343538 BP |
1473 | #else |
1474 | /* Default listener. */ | |
1475 | svec_init(&listeners); | |
1476 | svec_add_nocopy(&listeners, xasprintf("punix:%s/%s.mgmt", | |
1477 | ovs_rundir, br->name)); | |
1478 | svec_init(&old_listeners); | |
1479 | ofproto_get_listeners(br->ofproto, &old_listeners); | |
1480 | if (!svec_equal(&listeners, &old_listeners)) { | |
1481 | ofproto_set_listeners(br->ofproto, &listeners); | |
1482 | } | |
1483 | svec_destroy(&listeners); | |
1484 | svec_destroy(&old_listeners); | |
064af421 | 1485 | |
76343538 BP |
1486 | /* Default snoop. */ |
1487 | svec_init(&snoops); | |
1488 | svec_add_nocopy(&snoops, xasprintf("punix:%s/%s.snoop", | |
1489 | ovs_rundir, br->name)); | |
1490 | svec_init(&old_snoops); | |
1491 | ofproto_get_snoops(br->ofproto, &old_snoops); | |
1492 | if (!svec_equal(&snoops, &old_snoops)) { | |
1493 | ofproto_set_snoops(br->ofproto, &snoops); | |
1494 | } | |
1495 | svec_destroy(&snoops); | |
1496 | svec_destroy(&old_snoops); | |
1497 | #endif | |
1498 | ||
064af421 | 1499 | mirror_reconfigure(br); |
23ff2821 JP |
1500 | |
1501 | bridge_update_desc(br); | |
064af421 BP |
1502 | } |
1503 | ||
1504 | static void | |
76343538 BP |
1505 | bridge_reconfigure_controller(const struct ovsrec_open_vswitch *ovs_cfg, |
1506 | struct bridge *br) | |
064af421 | 1507 | { |
76343538 | 1508 | const struct ovsrec_controller *c; |
064af421 | 1509 | |
76343538 BP |
1510 | c = bridge_get_controller(ovs_cfg, br); |
1511 | if ((br->controller != NULL) != (c != NULL)) { | |
064af421 BP |
1512 | ofproto_flush_flows(br->ofproto); |
1513 | } | |
1514 | free(br->controller); | |
76343538 | 1515 | br->controller = c ? xstrdup(c->target) : NULL; |
064af421 | 1516 | |
76343538 | 1517 | if (c) { |
064af421 BP |
1518 | int max_backoff, probe; |
1519 | int rate_limit, burst_limit; | |
1520 | ||
76343538 | 1521 | if (!strcmp(c->target, "discover")) { |
064af421 | 1522 | ofproto_set_discovery(br->ofproto, true, |
76343538 BP |
1523 | c->discover_accept_regex, |
1524 | c->discover_update_resolv_conf); | |
064af421 | 1525 | } else { |
07c318f4 | 1526 | struct iface *local_iface; |
76343538 | 1527 | struct in_addr ip; |
064af421 | 1528 | bool in_band; |
064af421 | 1529 | |
76343538 BP |
1530 | in_band = (!c->connection_mode |
1531 | || !strcmp(c->connection_mode, "out-of-band")); | |
064af421 BP |
1532 | ofproto_set_discovery(br->ofproto, false, NULL, NULL); |
1533 | ofproto_set_in_band(br->ofproto, in_band); | |
1534 | ||
07c318f4 | 1535 | local_iface = bridge_get_local_iface(br); |
76343538 | 1536 | if (local_iface && c->local_ip && inet_aton(c->local_ip, &ip)) { |
07c318f4 | 1537 | struct netdev *netdev = local_iface->netdev; |
f446d59b | 1538 | struct in_addr mask, gateway; |
76343538 BP |
1539 | |
1540 | if (!c->local_netmask || !inet_aton(c->local_netmask, &mask)) { | |
1541 | mask.s_addr = 0; | |
1542 | } | |
1543 | if (!c->local_gateway | |
1544 | || !inet_aton(c->local_gateway, &gateway)) { | |
1545 | gateway.s_addr = 0; | |
1546 | } | |
07c318f4 BP |
1547 | |
1548 | netdev_turn_flags_on(netdev, NETDEV_UP, true); | |
1549 | if (!mask.s_addr) { | |
1550 | mask.s_addr = guess_netmask(ip.s_addr); | |
1551 | } | |
1552 | if (!netdev_set_in4(netdev, ip, mask)) { | |
1553 | VLOG_INFO("bridge %s: configured IP address "IP_FMT", " | |
1554 | "netmask "IP_FMT, | |
1555 | br->name, IP_ARGS(&ip.s_addr), | |
1556 | IP_ARGS(&mask.s_addr)); | |
1557 | } | |
064af421 | 1558 | |
07c318f4 BP |
1559 | if (gateway.s_addr) { |
1560 | if (!netdev_add_router(netdev, gateway)) { | |
1561 | VLOG_INFO("bridge %s: configured gateway "IP_FMT, | |
1562 | br->name, IP_ARGS(&gateway.s_addr)); | |
064af421 BP |
1563 | } |
1564 | } | |
064af421 BP |
1565 | } |
1566 | } | |
1567 | ||
064af421 | 1568 | ofproto_set_failure(br->ofproto, |
76343538 BP |
1569 | (!c->fail_mode |
1570 | || !strcmp(c->fail_mode, "standalone") | |
1571 | || !strcmp(c->fail_mode, "open"))); | |
1572 | ||
1573 | probe = c->inactivity_probe ? *c->inactivity_probe / 1000 : 5; | |
952efc48 | 1574 | ofproto_set_probe_interval(br->ofproto, probe); |
064af421 | 1575 | |
76343538 | 1576 | max_backoff = c->max_backoff ? *c->max_backoff / 1000 : 8; |
064af421 BP |
1577 | ofproto_set_max_backoff(br->ofproto, max_backoff); |
1578 | ||
76343538 BP |
1579 | rate_limit = c->controller_rate_limit ? *c->controller_rate_limit : 0; |
1580 | burst_limit = c->controller_burst_limit ? *c->controller_burst_limit : 0; | |
064af421 | 1581 | ofproto_set_rate_limit(br->ofproto, rate_limit, burst_limit); |
064af421 BP |
1582 | } else { |
1583 | union ofp_action action; | |
1584 | flow_t flow; | |
1585 | ||
1586 | /* Set up a flow that matches every packet and directs them to | |
1587 | * OFPP_NORMAL (which goes to us). */ | |
1588 | memset(&action, 0, sizeof action); | |
1589 | action.type = htons(OFPAT_OUTPUT); | |
1590 | action.output.len = htons(sizeof action); | |
1591 | action.output.port = htons(OFPP_NORMAL); | |
1592 | memset(&flow, 0, sizeof flow); | |
1593 | ofproto_add_flow(br->ofproto, &flow, OFPFW_ALL, 0, | |
1594 | &action, 1, 0); | |
1595 | ||
1596 | ofproto_set_in_band(br->ofproto, false); | |
1597 | ofproto_set_max_backoff(br->ofproto, 1); | |
1598 | ofproto_set_probe_interval(br->ofproto, 5); | |
1599 | ofproto_set_failure(br->ofproto, false); | |
064af421 | 1600 | } |
064af421 BP |
1601 | |
1602 | ofproto_set_controller(br->ofproto, br->controller); | |
1603 | } | |
1604 | ||
1605 | static void | |
76343538 | 1606 | bridge_get_all_ifaces(const struct bridge *br, struct shash *ifaces) |
064af421 BP |
1607 | { |
1608 | size_t i, j; | |
1609 | ||
76343538 | 1610 | shash_init(ifaces); |
064af421 BP |
1611 | for (i = 0; i < br->n_ports; i++) { |
1612 | struct port *port = br->ports[i]; | |
1613 | for (j = 0; j < port->n_ifaces; j++) { | |
1614 | struct iface *iface = port->ifaces[j]; | |
76343538 | 1615 | shash_add_once(ifaces, iface->name, iface); |
064af421 | 1616 | } |
76343538 BP |
1617 | if (port->n_ifaces > 1 && port->cfg->bond_fake_iface) { |
1618 | shash_add_once(ifaces, port->name, NULL); | |
35c979bf | 1619 | } |
064af421 | 1620 | } |
064af421 BP |
1621 | } |
1622 | ||
1623 | /* For robustness, in case the administrator moves around datapath ports behind | |
1624 | * our back, we re-check all the datapath port numbers here. | |
1625 | * | |
1626 | * This function will set the 'dp_ifidx' members of interfaces that have | |
1627 | * disappeared to -1, so only call this function from a context where those | |
1628 | * 'struct iface's will be removed from the bridge. Otherwise, the -1 | |
1629 | * 'dp_ifidx'es will cause trouble later when we try to send them to the | |
1630 | * datapath, which doesn't support UINT16_MAX+1 ports. */ | |
1631 | static void | |
1632 | bridge_fetch_dp_ifaces(struct bridge *br) | |
1633 | { | |
1634 | struct odp_port *dpif_ports; | |
1635 | size_t n_dpif_ports; | |
1636 | size_t i, j; | |
1637 | ||
1638 | /* Reset all interface numbers. */ | |
1639 | for (i = 0; i < br->n_ports; i++) { | |
1640 | struct port *port = br->ports[i]; | |
1641 | for (j = 0; j < port->n_ifaces; j++) { | |
1642 | struct iface *iface = port->ifaces[j]; | |
1643 | iface->dp_ifidx = -1; | |
1644 | } | |
1645 | } | |
1646 | port_array_clear(&br->ifaces); | |
1647 | ||
c228a364 | 1648 | dpif_port_list(br->dpif, &dpif_ports, &n_dpif_ports); |
064af421 BP |
1649 | for (i = 0; i < n_dpif_ports; i++) { |
1650 | struct odp_port *p = &dpif_ports[i]; | |
1651 | struct iface *iface = iface_lookup(br, p->devname); | |
1652 | if (iface) { | |
1653 | if (iface->dp_ifidx >= 0) { | |
b29ba128 | 1654 | VLOG_WARN("%s reported interface %s twice", |
c228a364 | 1655 | dpif_name(br->dpif), p->devname); |
064af421 | 1656 | } else if (iface_from_dp_ifidx(br, p->port)) { |
b29ba128 | 1657 | VLOG_WARN("%s reported interface %"PRIu16" twice", |
c228a364 | 1658 | dpif_name(br->dpif), p->port); |
064af421 BP |
1659 | } else { |
1660 | port_array_set(&br->ifaces, p->port, iface); | |
1661 | iface->dp_ifidx = p->port; | |
1662 | } | |
093e47f4 BP |
1663 | |
1664 | if (iface->cfg) { | |
1665 | int64_t ofport = (iface->dp_ifidx >= 0 | |
1666 | ? odp_port_to_ofp_port(iface->dp_ifidx) | |
1667 | : -1); | |
1668 | ovsrec_interface_set_ofport(iface->cfg, &ofport, 1); | |
1669 | } | |
064af421 BP |
1670 | } |
1671 | } | |
1672 | free(dpif_ports); | |
1673 | } | |
1674 | \f | |
1675 | /* Bridge packet processing functions. */ | |
1676 | ||
da285df4 BP |
1677 | static int |
1678 | bond_hash(const uint8_t mac[ETH_ADDR_LEN]) | |
1679 | { | |
1680 | return hash_bytes(mac, ETH_ADDR_LEN, 0) & BOND_MASK; | |
1681 | } | |
1682 | ||
064af421 BP |
1683 | static struct bond_entry * |
1684 | lookup_bond_entry(const struct port *port, const uint8_t mac[ETH_ADDR_LEN]) | |
1685 | { | |
da285df4 | 1686 | return &port->bond_hash[bond_hash(mac)]; |
064af421 BP |
1687 | } |
1688 | ||
1689 | static int | |
1690 | bond_choose_iface(const struct port *port) | |
1691 | { | |
8b2a2f4a JG |
1692 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20); |
1693 | size_t i, best_down_slave = -1; | |
1694 | long long next_delay_expiration = LLONG_MAX; | |
1695 | ||
064af421 | 1696 | for (i = 0; i < port->n_ifaces; i++) { |
8b2a2f4a JG |
1697 | struct iface *iface = port->ifaces[i]; |
1698 | ||
1699 | if (iface->enabled) { | |
064af421 | 1700 | return i; |
8b2a2f4a JG |
1701 | } else if (iface->delay_expires < next_delay_expiration) { |
1702 | best_down_slave = i; | |
1703 | next_delay_expiration = iface->delay_expires; | |
064af421 BP |
1704 | } |
1705 | } | |
8b2a2f4a JG |
1706 | |
1707 | if (best_down_slave != -1) { | |
1708 | struct iface *iface = port->ifaces[best_down_slave]; | |
1709 | ||
1710 | VLOG_INFO_RL(&rl, "interface %s: skipping remaining %lli ms updelay " | |
1711 | "since no other interface is up", iface->name, | |
1712 | iface->delay_expires - time_msec()); | |
1713 | bond_enable_slave(iface, true); | |
1714 | } | |
1715 | ||
1716 | return best_down_slave; | |
064af421 BP |
1717 | } |
1718 | ||
1719 | static bool | |
2303f3b2 | 1720 | choose_output_iface(const struct port *port, const uint8_t *dl_src, |
064af421 BP |
1721 | uint16_t *dp_ifidx, tag_type *tags) |
1722 | { | |
1723 | struct iface *iface; | |
1724 | ||
1725 | assert(port->n_ifaces); | |
1726 | if (port->n_ifaces == 1) { | |
1727 | iface = port->ifaces[0]; | |
1728 | } else { | |
2303f3b2 | 1729 | struct bond_entry *e = lookup_bond_entry(port, dl_src); |
064af421 BP |
1730 | if (e->iface_idx < 0 || e->iface_idx >= port->n_ifaces |
1731 | || !port->ifaces[e->iface_idx]->enabled) { | |
1732 | /* XXX select interface properly. The current interface selection | |
1733 | * is only good for testing the rebalancing code. */ | |
1734 | e->iface_idx = bond_choose_iface(port); | |
1735 | if (e->iface_idx < 0) { | |
1736 | *tags |= port->no_ifaces_tag; | |
1737 | return false; | |
1738 | } | |
1739 | e->iface_tag = tag_create_random(); | |
85c74638 | 1740 | ((struct port *) port)->bond_compat_is_stale = true; |
064af421 BP |
1741 | } |
1742 | *tags |= e->iface_tag; | |
1743 | iface = port->ifaces[e->iface_idx]; | |
1744 | } | |
1745 | *dp_ifidx = iface->dp_ifidx; | |
1746 | *tags |= iface->tag; /* Currently only used for bonding. */ | |
1747 | return true; | |
1748 | } | |
1749 | ||
1750 | static void | |
1751 | bond_link_status_update(struct iface *iface, bool carrier) | |
1752 | { | |
1753 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20); | |
1754 | struct port *port = iface->port; | |
1755 | ||
1756 | if ((carrier == iface->enabled) == (iface->delay_expires == LLONG_MAX)) { | |
1757 | /* Nothing to do. */ | |
1758 | return; | |
1759 | } | |
1760 | VLOG_INFO_RL(&rl, "interface %s: carrier %s", | |
1761 | iface->name, carrier ? "detected" : "dropped"); | |
1762 | if (carrier == iface->enabled) { | |
1763 | iface->delay_expires = LLONG_MAX; | |
1764 | VLOG_INFO_RL(&rl, "interface %s: will not be %s", | |
1765 | iface->name, carrier ? "disabled" : "enabled"); | |
8b2a2f4a JG |
1766 | } else if (carrier && port->active_iface < 0) { |
1767 | bond_enable_slave(iface, true); | |
1768 | if (port->updelay) { | |
1769 | VLOG_INFO_RL(&rl, "interface %s: skipping %d ms updelay since no " | |
1770 | "other interface is up", iface->name, port->updelay); | |
1771 | } | |
064af421 BP |
1772 | } else { |
1773 | int delay = carrier ? port->updelay : port->downdelay; | |
1774 | iface->delay_expires = time_msec() + delay; | |
1775 | if (delay) { | |
1776 | VLOG_INFO_RL(&rl, | |
1777 | "interface %s: will be %s if it stays %s for %d ms", | |
1778 | iface->name, | |
1779 | carrier ? "enabled" : "disabled", | |
1780 | carrier ? "up" : "down", | |
1781 | delay); | |
1782 | } | |
1783 | } | |
1784 | } | |
1785 | ||
1786 | static void | |
1787 | bond_choose_active_iface(struct port *port) | |
1788 | { | |
1789 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20); | |
1790 | ||
1791 | port->active_iface = bond_choose_iface(port); | |
1792 | port->active_iface_tag = tag_create_random(); | |
1793 | if (port->active_iface >= 0) { | |
1794 | VLOG_INFO_RL(&rl, "port %s: active interface is now %s", | |
1795 | port->name, port->ifaces[port->active_iface]->name); | |
1796 | } else { | |
1797 | VLOG_WARN_RL(&rl, "port %s: all ports disabled, no active interface", | |
1798 | port->name); | |
1799 | } | |
1800 | } | |
1801 | ||
da285df4 BP |
1802 | static void |
1803 | bond_enable_slave(struct iface *iface, bool enable) | |
1804 | { | |
1805 | struct port *port = iface->port; | |
1806 | struct bridge *br = port->bridge; | |
1807 | ||
8b2a2f4a JG |
1808 | /* This acts as a recursion check. If the act of disabling a slave |
1809 | * causes a different slave to be enabled, the flag will allow us to | |
1810 | * skip redundant work when we reenter this function. It must be | |
1811 | * cleared on exit to keep things safe with multiple bonds. */ | |
1812 | static bool moving_active_iface = false; | |
1813 | ||
da285df4 BP |
1814 | iface->delay_expires = LLONG_MAX; |
1815 | if (enable == iface->enabled) { | |
1816 | return; | |
1817 | } | |
1818 | ||
1819 | iface->enabled = enable; | |
1820 | if (!iface->enabled) { | |
17ea75b2 | 1821 | VLOG_WARN("interface %s: disabled", iface->name); |
da285df4 BP |
1822 | ofproto_revalidate(br->ofproto, iface->tag); |
1823 | if (iface->port_ifidx == port->active_iface) { | |
1824 | ofproto_revalidate(br->ofproto, | |
1825 | port->active_iface_tag); | |
8b2a2f4a JG |
1826 | |
1827 | /* Disabling a slave can lead to another slave being immediately | |
1828 | * enabled if there will be no active slaves but one is waiting | |
1829 | * on an updelay. In this case we do not need to run most of the | |
1830 | * code for the newly enabled slave since there was no period | |
1831 | * without an active slave and it is redundant with the disabling | |
1832 | * path. */ | |
1833 | moving_active_iface = true; | |
da285df4 BP |
1834 | bond_choose_active_iface(port); |
1835 | } | |
1836 | bond_send_learning_packets(port); | |
1837 | } else { | |
17ea75b2 | 1838 | VLOG_WARN("interface %s: enabled", iface->name); |
8b2a2f4a | 1839 | if (port->active_iface < 0 && !moving_active_iface) { |
da285df4 BP |
1840 | ofproto_revalidate(br->ofproto, port->no_ifaces_tag); |
1841 | bond_choose_active_iface(port); | |
1842 | bond_send_learning_packets(port); | |
1843 | } | |
1844 | iface->tag = tag_create_random(); | |
1845 | } | |
8b2a2f4a JG |
1846 | |
1847 | moving_active_iface = false; | |
1848 | port->bond_compat_is_stale = true; | |
da285df4 BP |
1849 | } |
1850 | ||
064af421 BP |
1851 | static void |
1852 | bond_run(struct bridge *br) | |
1853 | { | |
1854 | size_t i, j; | |
1855 | ||
1856 | for (i = 0; i < br->n_ports; i++) { | |
1857 | struct port *port = br->ports[i]; | |
85c74638 | 1858 | |
8b2a2f4a JG |
1859 | if (port->n_ifaces >= 2) { |
1860 | for (j = 0; j < port->n_ifaces; j++) { | |
1861 | struct iface *iface = port->ifaces[j]; | |
1862 | if (time_msec() >= iface->delay_expires) { | |
1863 | bond_enable_slave(iface, !iface->enabled); | |
1864 | } | |
1865 | } | |
1866 | } | |
1867 | ||
85c74638 BP |
1868 | if (port->bond_compat_is_stale) { |
1869 | port->bond_compat_is_stale = false; | |
1870 | port_update_bond_compat(port); | |
1871 | } | |
064af421 BP |
1872 | } |
1873 | } | |
1874 | ||
1875 | static void | |
1876 | bond_wait(struct bridge *br) | |
1877 | { | |
1878 | size_t i, j; | |
1879 | ||
1880 | for (i = 0; i < br->n_ports; i++) { | |
1881 | struct port *port = br->ports[i]; | |
1882 | if (port->n_ifaces < 2) { | |
1883 | continue; | |
1884 | } | |
1885 | for (j = 0; j < port->n_ifaces; j++) { | |
1886 | struct iface *iface = port->ifaces[j]; | |
1887 | if (iface->delay_expires != LLONG_MAX) { | |
1888 | poll_timer_wait(iface->delay_expires - time_msec()); | |
1889 | } | |
1890 | } | |
1891 | } | |
1892 | } | |
1893 | ||
1894 | static bool | |
1895 | set_dst(struct dst *p, const flow_t *flow, | |
1896 | const struct port *in_port, const struct port *out_port, | |
1897 | tag_type *tags) | |
1898 | { | |
064af421 BP |
1899 | p->vlan = (out_port->vlan >= 0 ? OFP_VLAN_NONE |
1900 | : in_port->vlan >= 0 ? in_port->vlan | |
1901 | : ntohs(flow->dl_vlan)); | |
2303f3b2 | 1902 | return choose_output_iface(out_port, flow->dl_src, &p->dp_ifidx, tags); |
064af421 BP |
1903 | } |
1904 | ||
1905 | static void | |
1906 | swap_dst(struct dst *p, struct dst *q) | |
1907 | { | |
1908 | struct dst tmp = *p; | |
1909 | *p = *q; | |
1910 | *q = tmp; | |
1911 | } | |
1912 | ||
1913 | /* Moves all the dsts with vlan == 'vlan' to the front of the 'n_dsts' in | |
1914 | * 'dsts'. (This may help performance by reducing the number of VLAN changes | |
1915 | * that we push to the datapath. We could in fact fully sort the array by | |
1916 | * vlan, but in most cases there are at most two different vlan tags so that's | |
1917 | * possibly overkill.) */ | |
1918 | static void | |
1919 | partition_dsts(struct dst *dsts, size_t n_dsts, int vlan) | |
1920 | { | |
1921 | struct dst *first = dsts; | |
1922 | struct dst *last = dsts + n_dsts; | |
1923 | ||
1924 | while (first != last) { | |
1925 | /* Invariants: | |
1926 | * - All dsts < first have vlan == 'vlan'. | |
1927 | * - All dsts >= last have vlan != 'vlan'. | |
1928 | * - first < last. */ | |
1929 | while (first->vlan == vlan) { | |
1930 | if (++first == last) { | |
1931 | return; | |
1932 | } | |
1933 | } | |
1934 | ||
1935 | /* Same invariants, plus one additional: | |
1936 | * - first->vlan != vlan. | |
1937 | */ | |
1938 | while (last[-1].vlan != vlan) { | |
1939 | if (--last == first) { | |
1940 | return; | |
1941 | } | |
1942 | } | |
1943 | ||
1944 | /* Same invariants, plus one additional: | |
1945 | * - last[-1].vlan == vlan.*/ | |
1946 | swap_dst(first++, --last); | |
1947 | } | |
1948 | } | |
1949 | ||
1950 | static int | |
1951 | mirror_mask_ffs(mirror_mask_t mask) | |
1952 | { | |
1953 | BUILD_ASSERT_DECL(sizeof(unsigned int) >= sizeof(mask)); | |
1954 | return ffs(mask); | |
1955 | } | |
1956 | ||
1957 | static bool | |
1958 | dst_is_duplicate(const struct dst *dsts, size_t n_dsts, | |
1959 | const struct dst *test) | |
1960 | { | |
1961 | size_t i; | |
1962 | for (i = 0; i < n_dsts; i++) { | |
1963 | if (dsts[i].vlan == test->vlan && dsts[i].dp_ifidx == test->dp_ifidx) { | |
1964 | return true; | |
1965 | } | |
1966 | } | |
1967 | return false; | |
1968 | } | |
1969 | ||
1970 | static bool | |
1971 | port_trunks_vlan(const struct port *port, uint16_t vlan) | |
1972 | { | |
1973 | return port->vlan < 0 && bitmap_is_set(port->trunks, vlan); | |
1974 | } | |
1975 | ||
1976 | static bool | |
1977 | port_includes_vlan(const struct port *port, uint16_t vlan) | |
1978 | { | |
1979 | return vlan == port->vlan || port_trunks_vlan(port, vlan); | |
1980 | } | |
1981 | ||
1982 | static size_t | |
1983 | compose_dsts(const struct bridge *br, const flow_t *flow, uint16_t vlan, | |
1984 | const struct port *in_port, const struct port *out_port, | |
6a07af36 | 1985 | struct dst dsts[], tag_type *tags, uint16_t *nf_output_iface) |
064af421 BP |
1986 | { |
1987 | mirror_mask_t mirrors = in_port->src_mirrors; | |
1988 | struct dst *dst = dsts; | |
1989 | size_t i; | |
1990 | ||
064af421 BP |
1991 | if (out_port == FLOOD_PORT) { |
1992 | /* XXX use ODP_FLOOD if no vlans or bonding. */ | |
1993 | /* XXX even better, define each VLAN as a datapath port group */ | |
1994 | for (i = 0; i < br->n_ports; i++) { | |
1995 | struct port *port = br->ports[i]; | |
1996 | if (port != in_port && port_includes_vlan(port, vlan) | |
1997 | && !port->is_mirror_output_port | |
1998 | && set_dst(dst, flow, in_port, port, tags)) { | |
1999 | mirrors |= port->dst_mirrors; | |
2000 | dst++; | |
2001 | } | |
2002 | } | |
6a07af36 | 2003 | *nf_output_iface = NF_OUT_FLOOD; |
064af421 | 2004 | } else if (out_port && set_dst(dst, flow, in_port, out_port, tags)) { |
6a07af36 | 2005 | *nf_output_iface = dst->dp_ifidx; |
064af421 BP |
2006 | mirrors |= out_port->dst_mirrors; |
2007 | dst++; | |
2008 | } | |
2009 | ||
2010 | while (mirrors) { | |
2011 | struct mirror *m = br->mirrors[mirror_mask_ffs(mirrors) - 1]; | |
2012 | if (!m->n_vlans || vlan_is_mirrored(m, vlan)) { | |
2013 | if (m->out_port) { | |
2014 | if (set_dst(dst, flow, in_port, m->out_port, tags) | |
2015 | && !dst_is_duplicate(dsts, dst - dsts, dst)) { | |
2016 | dst++; | |
2017 | } | |
2018 | } else { | |
2019 | for (i = 0; i < br->n_ports; i++) { | |
2020 | struct port *port = br->ports[i]; | |
2021 | if (port_includes_vlan(port, m->out_vlan) | |
274de4d2 | 2022 | && set_dst(dst, flow, in_port, port, tags)) |
064af421 | 2023 | { |
43aa5f47 JG |
2024 | int flow_vlan; |
2025 | ||
064af421 BP |
2026 | if (port->vlan < 0) { |
2027 | dst->vlan = m->out_vlan; | |
2028 | } | |
274de4d2 BP |
2029 | if (dst_is_duplicate(dsts, dst - dsts, dst)) { |
2030 | continue; | |
2031 | } | |
43aa5f47 JG |
2032 | |
2033 | /* Use the vlan tag on the original flow instead of | |
2034 | * the one passed in the vlan parameter. This ensures | |
2035 | * that we compare the vlan from before any implicit | |
2036 | * tagging tags place. This is necessary because | |
2037 | * dst->vlan is the final vlan, after removing implicit | |
2038 | * tags. */ | |
2039 | flow_vlan = ntohs(flow->dl_vlan); | |
2040 | if (flow_vlan == 0) { | |
2041 | flow_vlan = OFP_VLAN_NONE; | |
2042 | } | |
2043 | if (port == in_port && dst->vlan == flow_vlan) { | |
064af421 BP |
2044 | /* Don't send out input port on same VLAN. */ |
2045 | continue; | |
2046 | } | |
2047 | dst++; | |
2048 | } | |
2049 | } | |
2050 | } | |
2051 | } | |
2052 | mirrors &= mirrors - 1; | |
2053 | } | |
2054 | ||
2055 | partition_dsts(dsts, dst - dsts, ntohs(flow->dl_vlan)); | |
2056 | return dst - dsts; | |
2057 | } | |
2058 | ||
67a4917b | 2059 | static void OVS_UNUSED |
064af421 BP |
2060 | print_dsts(const struct dst *dsts, size_t n) |
2061 | { | |
2062 | for (; n--; dsts++) { | |
2063 | printf(">p%"PRIu16, dsts->dp_ifidx); | |
2064 | if (dsts->vlan != OFP_VLAN_NONE) { | |
2065 | printf("v%"PRIu16, dsts->vlan); | |
2066 | } | |
2067 | } | |
2068 | } | |
2069 | ||
2070 | static void | |
2071 | compose_actions(struct bridge *br, const flow_t *flow, uint16_t vlan, | |
2072 | const struct port *in_port, const struct port *out_port, | |
6a07af36 JG |
2073 | tag_type *tags, struct odp_actions *actions, |
2074 | uint16_t *nf_output_iface) | |
064af421 BP |
2075 | { |
2076 | struct dst dsts[DP_MAX_PORTS * (MAX_MIRRORS + 1)]; | |
2077 | size_t n_dsts; | |
2078 | const struct dst *p; | |
2079 | uint16_t cur_vlan; | |
2080 | ||
6a07af36 JG |
2081 | n_dsts = compose_dsts(br, flow, vlan, in_port, out_port, dsts, tags, |
2082 | nf_output_iface); | |
064af421 BP |
2083 | |
2084 | cur_vlan = ntohs(flow->dl_vlan); | |
2085 | for (p = dsts; p < &dsts[n_dsts]; p++) { | |
2086 | union odp_action *a; | |
2087 | if (p->vlan != cur_vlan) { | |
2088 | if (p->vlan == OFP_VLAN_NONE) { | |
2089 | odp_actions_add(actions, ODPAT_STRIP_VLAN); | |
2090 | } else { | |
2091 | a = odp_actions_add(actions, ODPAT_SET_VLAN_VID); | |
2092 | a->vlan_vid.vlan_vid = htons(p->vlan); | |
2093 | } | |
2094 | cur_vlan = p->vlan; | |
2095 | } | |
2096 | a = odp_actions_add(actions, ODPAT_OUTPUT); | |
2097 | a->output.port = p->dp_ifidx; | |
2098 | } | |
2099 | } | |
2100 | ||
e96a4d80 JG |
2101 | /* Returns the effective vlan of a packet, taking into account both the |
2102 | * 802.1Q header and implicitly tagged ports. A value of 0 indicates that | |
2103 | * the packet is untagged and -1 indicates it has an invalid header and | |
2104 | * should be dropped. */ | |
2105 | static int flow_get_vlan(struct bridge *br, const flow_t *flow, | |
2106 | struct port *in_port, bool have_packet) | |
2107 | { | |
2108 | /* Note that dl_vlan of 0 and of OFP_VLAN_NONE both mean that the packet | |
2109 | * belongs to VLAN 0, so we should treat both cases identically. (In the | |
2110 | * former case, the packet has an 802.1Q header that specifies VLAN 0, | |
2111 | * presumably to allow a priority to be specified. In the latter case, the | |
2112 | * packet does not have any 802.1Q header.) */ | |
2113 | int vlan = ntohs(flow->dl_vlan); | |
2114 | if (vlan == OFP_VLAN_NONE) { | |
2115 | vlan = 0; | |
2116 | } | |
2117 | if (in_port->vlan >= 0) { | |
2118 | if (vlan) { | |
2119 | /* XXX support double tagging? */ | |
2120 | if (have_packet) { | |
2121 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2122 | VLOG_WARN_RL(&rl, "bridge %s: dropping VLAN %"PRIu16" tagged " | |
2123 | "packet received on port %s configured with " | |
2124 | "implicit VLAN %"PRIu16, | |
2125 | br->name, ntohs(flow->dl_vlan), | |
2126 | in_port->name, in_port->vlan); | |
2127 | } | |
2128 | return -1; | |
2129 | } | |
2130 | vlan = in_port->vlan; | |
2131 | } else { | |
2132 | if (!port_includes_vlan(in_port, vlan)) { | |
2133 | if (have_packet) { | |
2134 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2135 | VLOG_WARN_RL(&rl, "bridge %s: dropping VLAN %d tagged " | |
2136 | "packet received on port %s not configured for " | |
2137 | "trunking VLAN %d", | |
2138 | br->name, vlan, in_port->name, vlan); | |
2139 | } | |
2140 | return -1; | |
2141 | } | |
2142 | } | |
2143 | ||
2144 | return vlan; | |
2145 | } | |
2146 | ||
2147 | static void | |
2148 | update_learning_table(struct bridge *br, const flow_t *flow, int vlan, | |
2149 | struct port *in_port) | |
2150 | { | |
2151 | tag_type rev_tag = mac_learning_learn(br->ml, flow->dl_src, | |
2152 | vlan, in_port->port_idx); | |
2153 | if (rev_tag) { | |
2154 | /* The log messages here could actually be useful in debugging, | |
2155 | * so keep the rate limit relatively high. */ | |
2156 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, | |
2157 | 300); | |
2158 | VLOG_DBG_RL(&rl, "bridge %s: learned that "ETH_ADDR_FMT" is " | |
2159 | "on port %s in VLAN %d", | |
2160 | br->name, ETH_ADDR_ARGS(flow->dl_src), | |
2161 | in_port->name, vlan); | |
2162 | ofproto_revalidate(br->ofproto, rev_tag); | |
2163 | } | |
2164 | } | |
2165 | ||
064af421 | 2166 | static bool |
69d60f9f | 2167 | is_bcast_arp_reply(const flow_t *flow) |
064af421 | 2168 | { |
064af421 | 2169 | return (flow->dl_type == htons(ETH_TYPE_ARP) |
69d60f9f JG |
2170 | && flow->nw_proto == ARP_OP_REPLY |
2171 | && eth_addr_is_broadcast(flow->dl_dst)); | |
064af421 BP |
2172 | } |
2173 | ||
14a34d00 BP |
2174 | /* Determines whether packets in 'flow' within 'br' should be forwarded or |
2175 | * dropped. Returns true if they may be forwarded, false if they should be | |
2176 | * dropped. | |
2177 | * | |
2178 | * If 'have_packet' is true, it indicates that the caller is processing a | |
2179 | * received packet. If 'have_packet' is false, then the caller is just | |
2180 | * revalidating an existing flow because configuration has changed. Either | |
2181 | * way, 'have_packet' only affects logging (there is no point in logging errors | |
2182 | * during revalidation). | |
2183 | * | |
2184 | * Sets '*in_portp' to the input port. This will be a null pointer if | |
2185 | * flow->in_port does not designate a known input port (in which case | |
2186 | * is_admissible() returns false). | |
2187 | * | |
2188 | * When returning true, sets '*vlanp' to the effective VLAN of the input | |
2189 | * packet, as returned by flow_get_vlan(). | |
2190 | * | |
2191 | * May also add tags to '*tags', although the current implementation only does | |
2192 | * so in one special case. | |
2193 | */ | |
064af421 | 2194 | static bool |
14a34d00 BP |
2195 | is_admissible(struct bridge *br, const flow_t *flow, bool have_packet, |
2196 | tag_type *tags, int *vlanp, struct port **in_portp) | |
064af421 BP |
2197 | { |
2198 | struct iface *in_iface; | |
2199 | struct port *in_port; | |
064af421 BP |
2200 | int vlan; |
2201 | ||
2202 | /* Find the interface and port structure for the received packet. */ | |
2203 | in_iface = iface_from_dp_ifidx(br, flow->in_port); | |
2204 | if (!in_iface) { | |
2205 | /* No interface? Something fishy... */ | |
14a34d00 | 2206 | if (have_packet) { |
064af421 BP |
2207 | /* Odd. A few possible reasons here: |
2208 | * | |
2209 | * - We deleted an interface but there are still a few packets | |
2210 | * queued up from it. | |
2211 | * | |
2212 | * - Someone externally added an interface (e.g. with "ovs-dpctl | |
2213 | * add-if") that we don't know about. | |
2214 | * | |
2215 | * - Packet arrived on the local port but the local port is not | |
2216 | * one of our bridge ports. | |
2217 | */ | |
2218 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2219 | ||
2220 | VLOG_WARN_RL(&rl, "bridge %s: received packet on unknown " | |
2221 | "interface %"PRIu16, br->name, flow->in_port); | |
2222 | } | |
2223 | ||
14a34d00 BP |
2224 | *in_portp = NULL; |
2225 | return false; | |
064af421 | 2226 | } |
14a34d00 BP |
2227 | *in_portp = in_port = in_iface->port; |
2228 | *vlanp = vlan = flow_get_vlan(br, flow, in_port, have_packet); | |
e96a4d80 | 2229 | if (vlan < 0) { |
14a34d00 | 2230 | return false; |
064af421 BP |
2231 | } |
2232 | ||
064af421 BP |
2233 | /* Drop frames for reserved multicast addresses. */ |
2234 | if (eth_addr_is_reserved(flow->dl_dst)) { | |
14a34d00 | 2235 | return false; |
064af421 BP |
2236 | } |
2237 | ||
2238 | /* Drop frames on ports reserved for mirroring. */ | |
2239 | if (in_port->is_mirror_output_port) { | |
14a34d00 | 2240 | if (have_packet) { |
f925807d BP |
2241 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
2242 | VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port " | |
2243 | "%s, which is reserved exclusively for mirroring", | |
2244 | br->name, in_port->name); | |
2245 | } | |
14a34d00 | 2246 | return false; |
064af421 BP |
2247 | } |
2248 | ||
3a55ef14 JG |
2249 | /* Packets received on bonds need special attention to avoid duplicates. */ |
2250 | if (in_port->n_ifaces > 1) { | |
2251 | int src_idx; | |
2252 | ||
2253 | if (eth_addr_is_multicast(flow->dl_dst)) { | |
2254 | *tags |= in_port->active_iface_tag; | |
2255 | if (in_port->active_iface != in_iface->port_ifidx) { | |
2256 | /* Drop all multicast packets on inactive slaves. */ | |
14a34d00 | 2257 | return false; |
c93b1d6a | 2258 | } |
064af421 | 2259 | } |
3a55ef14 JG |
2260 | |
2261 | /* Drop all packets for which we have learned a different input | |
2262 | * port, because we probably sent the packet on one slave and got | |
2263 | * it back on the other. Broadcast ARP replies are an exception | |
2264 | * to this rule: the host has moved to another switch. */ | |
2265 | src_idx = mac_learning_lookup(br->ml, flow->dl_src, vlan); | |
2266 | if (src_idx != -1 && src_idx != in_port->port_idx && | |
69d60f9f | 2267 | !is_bcast_arp_reply(flow)) { |
14a34d00 | 2268 | return false; |
3a55ef14 | 2269 | } |
064af421 BP |
2270 | } |
2271 | ||
14a34d00 BP |
2272 | return true; |
2273 | } | |
2274 | ||
2275 | /* If the composed actions may be applied to any packet in the given 'flow', | |
2276 | * returns true. Otherwise, the actions should only be applied to 'packet', or | |
2277 | * not at all, if 'packet' was NULL. */ | |
2278 | static bool | |
2279 | process_flow(struct bridge *br, const flow_t *flow, | |
2280 | const struct ofpbuf *packet, struct odp_actions *actions, | |
2281 | tag_type *tags, uint16_t *nf_output_iface) | |
2282 | { | |
2283 | struct port *in_port; | |
2284 | struct port *out_port; | |
2285 | int vlan; | |
2286 | int out_port_idx; | |
2287 | ||
2288 | /* Check whether we should drop packets in this flow. */ | |
2289 | if (!is_admissible(br, flow, packet != NULL, tags, &vlan, &in_port)) { | |
2290 | out_port = NULL; | |
2291 | goto done; | |
2292 | } | |
2293 | ||
93dfc067 JG |
2294 | /* Learn source MAC (but don't try to learn from revalidation). */ |
2295 | if (packet) { | |
e96a4d80 | 2296 | update_learning_table(br, flow, vlan, in_port); |
93dfc067 JG |
2297 | } |
2298 | ||
2299 | /* Determine output port. */ | |
1609aa03 | 2300 | out_port_idx = mac_learning_lookup_tag(br->ml, flow->dl_dst, vlan, tags); |
93dfc067 JG |
2301 | if (out_port_idx >= 0 && out_port_idx < br->n_ports) { |
2302 | out_port = br->ports[out_port_idx]; | |
e96a4d80 | 2303 | } else if (!packet && !eth_addr_is_multicast(flow->dl_dst)) { |
93dfc067 | 2304 | /* If we are revalidating but don't have a learning entry then |
e96a4d80 JG |
2305 | * eject the flow. Installing a flow that floods packets opens |
2306 | * up a window of time where we could learn from a packet reflected | |
2307 | * on a bond and blackhole packets before the learning table is | |
2308 | * updated to reflect the correct port. */ | |
93dfc067 | 2309 | return false; |
1609aa03 BP |
2310 | } else { |
2311 | out_port = FLOOD_PORT; | |
064af421 BP |
2312 | } |
2313 | ||
ba54bf4f BP |
2314 | /* Don't send packets out their input ports. */ |
2315 | if (in_port == out_port) { | |
064af421 BP |
2316 | out_port = NULL; |
2317 | } | |
2318 | ||
2319 | done: | |
14a34d00 BP |
2320 | if (in_port) { |
2321 | compose_actions(br, flow, vlan, in_port, out_port, tags, actions, | |
2322 | nf_output_iface); | |
2323 | } | |
064af421 | 2324 | |
69d60f9f | 2325 | return true; |
064af421 BP |
2326 | } |
2327 | ||
2328 | /* Careful: 'opp' is in host byte order and opp->port_no is an OFP port | |
2329 | * number. */ | |
2330 | static void | |
2331 | bridge_port_changed_ofhook_cb(enum ofp_port_reason reason, | |
2332 | const struct ofp_phy_port *opp, | |
2333 | void *br_) | |
2334 | { | |
2335 | struct bridge *br = br_; | |
2336 | struct iface *iface; | |
2337 | struct port *port; | |
2338 | ||
2339 | iface = iface_from_dp_ifidx(br, ofp_port_to_odp_port(opp->port_no)); | |
2340 | if (!iface) { | |
2341 | return; | |
2342 | } | |
2343 | port = iface->port; | |
2344 | ||
2345 | if (reason == OFPPR_DELETE) { | |
2346 | VLOG_WARN("bridge %s: interface %s deleted unexpectedly", | |
2347 | br->name, iface->name); | |
2348 | iface_destroy(iface); | |
2349 | if (!port->n_ifaces) { | |
2350 | VLOG_WARN("bridge %s: port %s has no interfaces, dropping", | |
2351 | br->name, port->name); | |
2352 | port_destroy(port); | |
2353 | } | |
2354 | ||
2355 | bridge_flush(br); | |
2356 | } else { | |
064af421 BP |
2357 | if (port->n_ifaces > 1) { |
2358 | bool up = !(opp->state & OFPPS_LINK_DOWN); | |
2359 | bond_link_status_update(iface, up); | |
2360 | port_update_bond_compat(port); | |
2361 | } | |
2362 | } | |
2363 | } | |
2364 | ||
2365 | static bool | |
2366 | bridge_normal_ofhook_cb(const flow_t *flow, const struct ofpbuf *packet, | |
6a07af36 JG |
2367 | struct odp_actions *actions, tag_type *tags, |
2368 | uint16_t *nf_output_iface, void *br_) | |
064af421 BP |
2369 | { |
2370 | struct bridge *br = br_; | |
2371 | ||
064af421 | 2372 | COVERAGE_INC(bridge_process_flow); |
6a07af36 | 2373 | return process_flow(br, flow, packet, actions, tags, nf_output_iface); |
064af421 BP |
2374 | } |
2375 | ||
2376 | static void | |
2377 | bridge_account_flow_ofhook_cb(const flow_t *flow, | |
2378 | const union odp_action *actions, | |
2379 | size_t n_actions, unsigned long long int n_bytes, | |
2380 | void *br_) | |
2381 | { | |
2382 | struct bridge *br = br_; | |
2383 | const union odp_action *a; | |
db0e2ad1 BP |
2384 | struct port *in_port; |
2385 | tag_type tags = 0; | |
2386 | int vlan; | |
064af421 | 2387 | |
e96a4d80 JG |
2388 | /* Feed information from the active flows back into the learning table |
2389 | * to ensure that table is always in sync with what is actually flowing | |
2390 | * through the datapath. */ | |
db0e2ad1 BP |
2391 | if (is_admissible(br, flow, false, &tags, &vlan, &in_port)) { |
2392 | update_learning_table(br, flow, vlan, in_port); | |
e96a4d80 JG |
2393 | } |
2394 | ||
064af421 BP |
2395 | if (!br->has_bonded_ports) { |
2396 | return; | |
2397 | } | |
2398 | ||
2399 | for (a = actions; a < &actions[n_actions]; a++) { | |
2400 | if (a->type == ODPAT_OUTPUT) { | |
e96a4d80 JG |
2401 | struct port *out_port = port_from_dp_ifidx(br, a->output.port); |
2402 | if (out_port && out_port->n_ifaces >= 2) { | |
2403 | struct bond_entry *e = lookup_bond_entry(out_port, | |
2404 | flow->dl_src); | |
064af421 BP |
2405 | e->tx_bytes += n_bytes; |
2406 | } | |
2407 | } | |
2408 | } | |
2409 | } | |
2410 | ||
2411 | static void | |
2412 | bridge_account_checkpoint_ofhook_cb(void *br_) | |
2413 | { | |
2414 | struct bridge *br = br_; | |
c8143c88 | 2415 | long long int now; |
064af421 BP |
2416 | size_t i; |
2417 | ||
2418 | if (!br->has_bonded_ports) { | |
2419 | return; | |
2420 | } | |
2421 | ||
c8143c88 | 2422 | now = time_msec(); |
064af421 BP |
2423 | for (i = 0; i < br->n_ports; i++) { |
2424 | struct port *port = br->ports[i]; | |
c8143c88 BP |
2425 | if (port->n_ifaces > 1 && now >= port->bond_next_rebalance) { |
2426 | port->bond_next_rebalance = now + port->bond_rebalance_interval; | |
064af421 BP |
2427 | bond_rebalance_port(port); |
2428 | } | |
2429 | } | |
2430 | } | |
2431 | ||
2432 | static struct ofhooks bridge_ofhooks = { | |
2433 | bridge_port_changed_ofhook_cb, | |
2434 | bridge_normal_ofhook_cb, | |
2435 | bridge_account_flow_ofhook_cb, | |
2436 | bridge_account_checkpoint_ofhook_cb, | |
2437 | }; | |
2438 | \f | |
2303f3b2 BP |
2439 | /* Bonding functions. */ |
2440 | ||
064af421 BP |
2441 | /* Statistics for a single interface on a bonded port, used for load-based |
2442 | * bond rebalancing. */ | |
2443 | struct slave_balance { | |
2444 | struct iface *iface; /* The interface. */ | |
2445 | uint64_t tx_bytes; /* Sum of hashes[*]->tx_bytes. */ | |
2446 | ||
2447 | /* All the "bond_entry"s that are assigned to this interface, in order of | |
2448 | * increasing tx_bytes. */ | |
2449 | struct bond_entry **hashes; | |
2450 | size_t n_hashes; | |
2451 | }; | |
2452 | ||
2453 | /* Sorts pointers to pointers to bond_entries in ascending order by the | |
2454 | * interface to which they are assigned, and within a single interface in | |
2455 | * ascending order of bytes transmitted. */ | |
2456 | static int | |
2457 | compare_bond_entries(const void *a_, const void *b_) | |
2458 | { | |
2459 | const struct bond_entry *const *ap = a_; | |
2460 | const struct bond_entry *const *bp = b_; | |
2461 | const struct bond_entry *a = *ap; | |
2462 | const struct bond_entry *b = *bp; | |
2463 | if (a->iface_idx != b->iface_idx) { | |
2464 | return a->iface_idx > b->iface_idx ? 1 : -1; | |
2465 | } else if (a->tx_bytes != b->tx_bytes) { | |
2466 | return a->tx_bytes > b->tx_bytes ? 1 : -1; | |
2467 | } else { | |
2468 | return 0; | |
2469 | } | |
2470 | } | |
2471 | ||
2472 | /* Sorts slave_balances so that enabled ports come first, and otherwise in | |
2473 | * *descending* order by number of bytes transmitted. */ | |
2474 | static int | |
2475 | compare_slave_balance(const void *a_, const void *b_) | |
2476 | { | |
2477 | const struct slave_balance *a = a_; | |
2478 | const struct slave_balance *b = b_; | |
2479 | if (a->iface->enabled != b->iface->enabled) { | |
2480 | return a->iface->enabled ? -1 : 1; | |
2481 | } else if (a->tx_bytes != b->tx_bytes) { | |
2482 | return a->tx_bytes > b->tx_bytes ? -1 : 1; | |
2483 | } else { | |
2484 | return 0; | |
2485 | } | |
2486 | } | |
2487 | ||
2488 | static void | |
2489 | swap_bals(struct slave_balance *a, struct slave_balance *b) | |
2490 | { | |
2491 | struct slave_balance tmp = *a; | |
2492 | *a = *b; | |
2493 | *b = tmp; | |
2494 | } | |
2495 | ||
2496 | /* Restores the 'n_bals' slave_balance structures in 'bals' to sorted order | |
2497 | * given that 'p' (and only 'p') might be in the wrong location. | |
2498 | * | |
2499 | * This function invalidates 'p', since it might now be in a different memory | |
2500 | * location. */ | |
2501 | static void | |
2502 | resort_bals(struct slave_balance *p, | |
2503 | struct slave_balance bals[], size_t n_bals) | |
2504 | { | |
2505 | if (n_bals > 1) { | |
2506 | for (; p > bals && p->tx_bytes > p[-1].tx_bytes; p--) { | |
2507 | swap_bals(p, p - 1); | |
2508 | } | |
2509 | for (; p < &bals[n_bals - 1] && p->tx_bytes < p[1].tx_bytes; p++) { | |
2510 | swap_bals(p, p + 1); | |
2511 | } | |
2512 | } | |
2513 | } | |
2514 | ||
2515 | static void | |
2516 | log_bals(const struct slave_balance *bals, size_t n_bals, struct port *port) | |
2517 | { | |
2518 | if (VLOG_IS_DBG_ENABLED()) { | |
2519 | struct ds ds = DS_EMPTY_INITIALIZER; | |
2520 | const struct slave_balance *b; | |
2521 | ||
2522 | for (b = bals; b < bals + n_bals; b++) { | |
2523 | size_t i; | |
2524 | ||
2525 | if (b > bals) { | |
2526 | ds_put_char(&ds, ','); | |
2527 | } | |
2528 | ds_put_format(&ds, " %s %"PRIu64"kB", | |
2529 | b->iface->name, b->tx_bytes / 1024); | |
2530 | ||
2531 | if (!b->iface->enabled) { | |
2532 | ds_put_cstr(&ds, " (disabled)"); | |
2533 | } | |
2534 | if (b->n_hashes > 0) { | |
2535 | ds_put_cstr(&ds, " ("); | |
2536 | for (i = 0; i < b->n_hashes; i++) { | |
2537 | const struct bond_entry *e = b->hashes[i]; | |
2538 | if (i > 0) { | |
2539 | ds_put_cstr(&ds, " + "); | |
2540 | } | |
2541 | ds_put_format(&ds, "h%td: %"PRIu64"kB", | |
2542 | e - port->bond_hash, e->tx_bytes / 1024); | |
2543 | } | |
2544 | ds_put_cstr(&ds, ")"); | |
2545 | } | |
2546 | } | |
2547 | VLOG_DBG("bond %s:%s", port->name, ds_cstr(&ds)); | |
2548 | ds_destroy(&ds); | |
2549 | } | |
2550 | } | |
2551 | ||
2552 | /* Shifts 'hash' from 'from' to 'to' within 'port'. */ | |
2553 | static void | |
2554 | bond_shift_load(struct slave_balance *from, struct slave_balance *to, | |
5422a9e1 | 2555 | int hash_idx) |
064af421 | 2556 | { |
5422a9e1 | 2557 | struct bond_entry *hash = from->hashes[hash_idx]; |
064af421 BP |
2558 | struct port *port = from->iface->port; |
2559 | uint64_t delta = hash->tx_bytes; | |
2560 | ||
2561 | VLOG_INFO("bond %s: shift %"PRIu64"kB of load (with hash %td) " | |
2562 | "from %s to %s (now carrying %"PRIu64"kB and " | |
2563 | "%"PRIu64"kB load, respectively)", | |
2564 | port->name, delta / 1024, hash - port->bond_hash, | |
2565 | from->iface->name, to->iface->name, | |
2566 | (from->tx_bytes - delta) / 1024, | |
2567 | (to->tx_bytes + delta) / 1024); | |
2568 | ||
2569 | /* Delete element from from->hashes. | |
2570 | * | |
2571 | * We don't bother to add the element to to->hashes because not only would | |
2572 | * it require more work, the only purpose it would be to allow that hash to | |
2573 | * be migrated to another slave in this rebalancing run, and there is no | |
2574 | * point in doing that. */ | |
5422a9e1 | 2575 | if (hash_idx == 0) { |
064af421 BP |
2576 | from->hashes++; |
2577 | } else { | |
5422a9e1 JG |
2578 | memmove(from->hashes + hash_idx, from->hashes + hash_idx + 1, |
2579 | (from->n_hashes - (hash_idx + 1)) * sizeof *from->hashes); | |
064af421 BP |
2580 | } |
2581 | from->n_hashes--; | |
2582 | ||
2583 | /* Shift load away from 'from' to 'to'. */ | |
2584 | from->tx_bytes -= delta; | |
2585 | to->tx_bytes += delta; | |
2586 | ||
2587 | /* Arrange for flows to be revalidated. */ | |
2588 | ofproto_revalidate(port->bridge->ofproto, hash->iface_tag); | |
2589 | hash->iface_idx = to->iface->port_ifidx; | |
2590 | hash->iface_tag = tag_create_random(); | |
064af421 BP |
2591 | } |
2592 | ||
2593 | static void | |
2594 | bond_rebalance_port(struct port *port) | |
2595 | { | |
2596 | struct slave_balance bals[DP_MAX_PORTS]; | |
2597 | size_t n_bals; | |
2598 | struct bond_entry *hashes[BOND_MASK + 1]; | |
2599 | struct slave_balance *b, *from, *to; | |
2600 | struct bond_entry *e; | |
2601 | size_t i; | |
2602 | ||
2603 | /* Sets up 'bals' to describe each of the port's interfaces, sorted in | |
2604 | * descending order of tx_bytes, so that bals[0] represents the most | |
2605 | * heavily loaded slave and bals[n_bals - 1] represents the least heavily | |
2606 | * loaded slave. | |
2607 | * | |
2608 | * The code is a bit tricky: to avoid dynamically allocating a 'hashes' | |
2609 | * array for each slave_balance structure, we sort our local array of | |
2610 | * hashes in order by slave, so that all of the hashes for a given slave | |
2611 | * become contiguous in memory, and then we point each 'hashes' members of | |
2612 | * a slave_balance structure to the start of a contiguous group. */ | |
2613 | n_bals = port->n_ifaces; | |
2614 | for (b = bals; b < &bals[n_bals]; b++) { | |
2615 | b->iface = port->ifaces[b - bals]; | |
2616 | b->tx_bytes = 0; | |
2617 | b->hashes = NULL; | |
2618 | b->n_hashes = 0; | |
2619 | } | |
2620 | for (i = 0; i <= BOND_MASK; i++) { | |
2621 | hashes[i] = &port->bond_hash[i]; | |
2622 | } | |
2623 | qsort(hashes, BOND_MASK + 1, sizeof *hashes, compare_bond_entries); | |
2624 | for (i = 0; i <= BOND_MASK; i++) { | |
2625 | e = hashes[i]; | |
2626 | if (e->iface_idx >= 0 && e->iface_idx < port->n_ifaces) { | |
2627 | b = &bals[e->iface_idx]; | |
2628 | b->tx_bytes += e->tx_bytes; | |
2629 | if (!b->hashes) { | |
2630 | b->hashes = &hashes[i]; | |
2631 | } | |
2632 | b->n_hashes++; | |
2633 | } | |
2634 | } | |
2635 | qsort(bals, n_bals, sizeof *bals, compare_slave_balance); | |
2636 | log_bals(bals, n_bals, port); | |
2637 | ||
2638 | /* Discard slaves that aren't enabled (which were sorted to the back of the | |
2639 | * array earlier). */ | |
2640 | while (!bals[n_bals - 1].iface->enabled) { | |
2641 | n_bals--; | |
2642 | if (!n_bals) { | |
2643 | return; | |
2644 | } | |
2645 | } | |
2646 | ||
2647 | /* Shift load from the most-loaded slaves to the least-loaded slaves. */ | |
2648 | to = &bals[n_bals - 1]; | |
2649 | for (from = bals; from < to; ) { | |
2650 | uint64_t overload = from->tx_bytes - to->tx_bytes; | |
2651 | if (overload < to->tx_bytes >> 5 || overload < 100000) { | |
2652 | /* The extra load on 'from' (and all less-loaded slaves), compared | |
2653 | * to that of 'to' (the least-loaded slave), is less than ~3%, or | |
2654 | * it is less than ~1Mbps. No point in rebalancing. */ | |
2655 | break; | |
2656 | } else if (from->n_hashes == 1) { | |
2657 | /* 'from' only carries a single MAC hash, so we can't shift any | |
2658 | * load away from it, even though we want to. */ | |
2659 | from++; | |
2660 | } else { | |
2661 | /* 'from' is carrying significantly more load than 'to', and that | |
2662 | * load is split across at least two different hashes. Pick a hash | |
2663 | * to migrate to 'to' (the least-loaded slave), given that doing so | |
5422a9e1 JG |
2664 | * must decrease the ratio of the load on the two slaves by at |
2665 | * least 0.1. | |
064af421 BP |
2666 | * |
2667 | * The sort order we use means that we prefer to shift away the | |
2668 | * smallest hashes instead of the biggest ones. There is little | |
2669 | * reason behind this decision; we could use the opposite sort | |
2670 | * order to shift away big hashes ahead of small ones. */ | |
2671 | size_t i; | |
5422a9e1 | 2672 | bool order_swapped; |
064af421 BP |
2673 | |
2674 | for (i = 0; i < from->n_hashes; i++) { | |
5422a9e1 | 2675 | double old_ratio, new_ratio; |
064af421 | 2676 | uint64_t delta = from->hashes[i]->tx_bytes; |
5422a9e1 JG |
2677 | |
2678 | if (delta == 0 || from->tx_bytes - delta == 0) { | |
2679 | /* Pointless move. */ | |
2680 | continue; | |
2681 | } | |
2682 | ||
2683 | order_swapped = from->tx_bytes - delta < to->tx_bytes + delta; | |
2684 | ||
2685 | if (to->tx_bytes == 0) { | |
2686 | /* Nothing on the new slave, move it. */ | |
2687 | break; | |
2688 | } | |
2689 | ||
2690 | old_ratio = (double)from->tx_bytes / to->tx_bytes; | |
2691 | new_ratio = (double)(from->tx_bytes - delta) / | |
2692 | (to->tx_bytes + delta); | |
2693 | ||
2694 | if (new_ratio == 0) { | |
2695 | /* Should already be covered but check to prevent division | |
2696 | * by zero. */ | |
2697 | continue; | |
2698 | } | |
2699 | ||
2700 | if (new_ratio < 1) { | |
2701 | new_ratio = 1 / new_ratio; | |
2702 | } | |
2703 | ||
2704 | if (old_ratio - new_ratio > 0.1) { | |
2705 | /* Would decrease the ratio, move it. */ | |
064af421 BP |
2706 | break; |
2707 | } | |
2708 | } | |
2709 | if (i < from->n_hashes) { | |
5422a9e1 JG |
2710 | bond_shift_load(from, to, i); |
2711 | port->bond_compat_is_stale = true; | |
2712 | ||
2713 | /* If the result of the migration changed the relative order of | |
2714 | * 'from' and 'to' swap them back to maintain invariants. */ | |
2715 | if (order_swapped) { | |
2716 | swap_bals(from, to); | |
2717 | } | |
064af421 BP |
2718 | |
2719 | /* Re-sort 'bals'. Note that this may make 'from' and 'to' | |
2720 | * point to different slave_balance structures. It is only | |
2721 | * valid to do these two operations in a row at all because we | |
2722 | * know that 'from' will not move past 'to' and vice versa. */ | |
2723 | resort_bals(from, bals, n_bals); | |
2724 | resort_bals(to, bals, n_bals); | |
2725 | } else { | |
2726 | from++; | |
2727 | } | |
2728 | } | |
2729 | } | |
2730 | ||
2731 | /* Implement exponentially weighted moving average. A weight of 1/2 causes | |
2732 | * historical data to decay to <1% in 7 rebalancing runs. */ | |
2733 | for (e = &port->bond_hash[0]; e <= &port->bond_hash[BOND_MASK]; e++) { | |
2734 | e->tx_bytes /= 2; | |
2735 | } | |
2736 | } | |
2303f3b2 BP |
2737 | |
2738 | static void | |
2739 | bond_send_learning_packets(struct port *port) | |
2740 | { | |
2741 | struct bridge *br = port->bridge; | |
2742 | struct mac_entry *e; | |
2743 | struct ofpbuf packet; | |
2744 | int error, n_packets, n_errors; | |
2745 | ||
93dfc067 | 2746 | if (!port->n_ifaces || port->active_iface < 0) { |
2303f3b2 BP |
2747 | return; |
2748 | } | |
2749 | ||
2750 | ofpbuf_init(&packet, 128); | |
2751 | error = n_packets = n_errors = 0; | |
2752 | LIST_FOR_EACH (e, struct mac_entry, lru_node, &br->ml->lrus) { | |
2303f3b2 | 2753 | union ofp_action actions[2], *a; |
2303f3b2 BP |
2754 | uint16_t dp_ifidx; |
2755 | tag_type tags = 0; | |
2756 | flow_t flow; | |
2757 | int retval; | |
2758 | ||
2759 | if (e->port == port->port_idx | |
2760 | || !choose_output_iface(port, e->mac, &dp_ifidx, &tags)) { | |
2761 | continue; | |
2762 | } | |
2763 | ||
2303f3b2 BP |
2764 | /* Compose actions. */ |
2765 | memset(actions, 0, sizeof actions); | |
2766 | a = actions; | |
2767 | if (e->vlan) { | |
2768 | a->vlan_vid.type = htons(OFPAT_SET_VLAN_VID); | |
2769 | a->vlan_vid.len = htons(sizeof *a); | |
2770 | a->vlan_vid.vlan_vid = htons(e->vlan); | |
2771 | a++; | |
2772 | } | |
2773 | a->output.type = htons(OFPAT_OUTPUT); | |
2774 | a->output.len = htons(sizeof *a); | |
2775 | a->output.port = htons(odp_port_to_ofp_port(dp_ifidx)); | |
2776 | a++; | |
2777 | ||
2778 | /* Send packet. */ | |
2779 | n_packets++; | |
b9e8b45a BP |
2780 | compose_benign_packet(&packet, "Open vSwitch Bond Failover", 0xf177, |
2781 | e->mac); | |
2303f3b2 BP |
2782 | flow_extract(&packet, ODPP_NONE, &flow); |
2783 | retval = ofproto_send_packet(br->ofproto, &flow, actions, a - actions, | |
2784 | &packet); | |
2785 | if (retval) { | |
2786 | error = retval; | |
2787 | n_errors++; | |
2788 | } | |
2789 | } | |
2790 | ofpbuf_uninit(&packet); | |
2791 | ||
2792 | if (n_errors) { | |
2793 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2794 | VLOG_WARN_RL(&rl, "bond %s: %d errors sending %d gratuitous learning " | |
2795 | "packets, last error was: %s", | |
2796 | port->name, n_errors, n_packets, strerror(error)); | |
2797 | } else { | |
2798 | VLOG_DBG("bond %s: sent %d gratuitous learning packets", | |
2799 | port->name, n_packets); | |
2800 | } | |
2801 | } | |
064af421 | 2802 | \f |
da285df4 BP |
2803 | /* Bonding unixctl user interface functions. */ |
2804 | ||
2805 | static void | |
8ca79daa | 2806 | bond_unixctl_list(struct unixctl_conn *conn, |
c69ee87c | 2807 | const char *args OVS_UNUSED, void *aux OVS_UNUSED) |
da285df4 BP |
2808 | { |
2809 | struct ds ds = DS_EMPTY_INITIALIZER; | |
2810 | const struct bridge *br; | |
2811 | ||
2812 | ds_put_cstr(&ds, "bridge\tbond\tslaves\n"); | |
2813 | ||
2814 | LIST_FOR_EACH (br, struct bridge, node, &all_bridges) { | |
2815 | size_t i; | |
2816 | ||
2817 | for (i = 0; i < br->n_ports; i++) { | |
2818 | const struct port *port = br->ports[i]; | |
2819 | if (port->n_ifaces > 1) { | |
2820 | size_t j; | |
2821 | ||
2822 | ds_put_format(&ds, "%s\t%s\t", br->name, port->name); | |
2823 | for (j = 0; j < port->n_ifaces; j++) { | |
2824 | const struct iface *iface = port->ifaces[j]; | |
2825 | if (j) { | |
2826 | ds_put_cstr(&ds, ", "); | |
2827 | } | |
2828 | ds_put_cstr(&ds, iface->name); | |
2829 | } | |
2830 | ds_put_char(&ds, '\n'); | |
2831 | } | |
2832 | } | |
2833 | } | |
2834 | unixctl_command_reply(conn, 200, ds_cstr(&ds)); | |
2835 | ds_destroy(&ds); | |
2836 | } | |
2837 | ||
2838 | static struct port * | |
2839 | bond_find(const char *name) | |
2840 | { | |
2841 | const struct bridge *br; | |
2842 | ||
2843 | LIST_FOR_EACH (br, struct bridge, node, &all_bridges) { | |
2844 | size_t i; | |
2845 | ||
2846 | for (i = 0; i < br->n_ports; i++) { | |
2847 | struct port *port = br->ports[i]; | |
2848 | if (!strcmp(port->name, name) && port->n_ifaces > 1) { | |
2849 | return port; | |
2850 | } | |
2851 | } | |
2852 | } | |
2853 | return NULL; | |
2854 | } | |
2855 | ||
2856 | static void | |
8ca79daa | 2857 | bond_unixctl_show(struct unixctl_conn *conn, |
c69ee87c | 2858 | const char *args, void *aux OVS_UNUSED) |
da285df4 BP |
2859 | { |
2860 | struct ds ds = DS_EMPTY_INITIALIZER; | |
2861 | const struct port *port; | |
2862 | size_t j; | |
2863 | ||
2864 | port = bond_find(args); | |
2865 | if (!port) { | |
2866 | unixctl_command_reply(conn, 501, "no such bond"); | |
2867 | return; | |
2868 | } | |
2869 | ||
2870 | ds_put_format(&ds, "updelay: %d ms\n", port->updelay); | |
2871 | ds_put_format(&ds, "downdelay: %d ms\n", port->downdelay); | |
2872 | ds_put_format(&ds, "next rebalance: %lld ms\n", | |
c8143c88 | 2873 | port->bond_next_rebalance - time_msec()); |
da285df4 BP |
2874 | for (j = 0; j < port->n_ifaces; j++) { |
2875 | const struct iface *iface = port->ifaces[j]; | |
2876 | struct bond_entry *be; | |
2877 | ||
2878 | /* Basic info. */ | |
2879 | ds_put_format(&ds, "slave %s: %s\n", | |
2880 | iface->name, iface->enabled ? "enabled" : "disabled"); | |
2881 | if (j == port->active_iface) { | |
2882 | ds_put_cstr(&ds, "\tactive slave\n"); | |
2883 | } | |
2884 | if (iface->delay_expires != LLONG_MAX) { | |
2885 | ds_put_format(&ds, "\t%s expires in %lld ms\n", | |
2886 | iface->enabled ? "downdelay" : "updelay", | |
2887 | iface->delay_expires - time_msec()); | |
2888 | } | |
2889 | ||
2890 | /* Hashes. */ | |
2891 | for (be = port->bond_hash; be <= &port->bond_hash[BOND_MASK]; be++) { | |
2892 | int hash = be - port->bond_hash; | |
2893 | struct mac_entry *me; | |
2894 | ||
2895 | if (be->iface_idx != j) { | |
2896 | continue; | |
2897 | } | |
2898 | ||
2886875a | 2899 | ds_put_format(&ds, "\thash %d: %"PRIu64" kB load\n", |
da285df4 BP |
2900 | hash, be->tx_bytes / 1024); |
2901 | ||
2902 | /* MACs. */ | |
da285df4 BP |
2903 | LIST_FOR_EACH (me, struct mac_entry, lru_node, |
2904 | &port->bridge->ml->lrus) { | |
2905 | uint16_t dp_ifidx; | |
2906 | tag_type tags = 0; | |
2907 | if (bond_hash(me->mac) == hash | |
2908 | && me->port != port->port_idx | |
2909 | && choose_output_iface(port, me->mac, &dp_ifidx, &tags) | |
2910 | && dp_ifidx == iface->dp_ifidx) | |
2911 | { | |
2912 | ds_put_format(&ds, "\t\t"ETH_ADDR_FMT"\n", | |
2913 | ETH_ADDR_ARGS(me->mac)); | |
2914 | } | |
2915 | } | |
2916 | } | |
2917 | } | |
2918 | unixctl_command_reply(conn, 200, ds_cstr(&ds)); | |
2919 | ds_destroy(&ds); | |
2920 | } | |
2921 | ||
2922 | static void | |
8ca79daa | 2923 | bond_unixctl_migrate(struct unixctl_conn *conn, const char *args_, |
c69ee87c | 2924 | void *aux OVS_UNUSED) |
da285df4 BP |
2925 | { |
2926 | char *args = (char *) args_; | |
2927 | char *save_ptr = NULL; | |
2928 | char *bond_s, *hash_s, *slave_s; | |
2929 | uint8_t mac[ETH_ADDR_LEN]; | |
2930 | struct port *port; | |
2931 | struct iface *iface; | |
2932 | struct bond_entry *entry; | |
2933 | int hash; | |
2934 | ||
2935 | bond_s = strtok_r(args, " ", &save_ptr); | |
2936 | hash_s = strtok_r(NULL, " ", &save_ptr); | |
2937 | slave_s = strtok_r(NULL, " ", &save_ptr); | |
2938 | if (!slave_s) { | |
2939 | unixctl_command_reply(conn, 501, | |
2940 | "usage: bond/migrate BOND HASH SLAVE"); | |
2941 | return; | |
2942 | } | |
2943 | ||
2944 | port = bond_find(bond_s); | |
2945 | if (!port) { | |
2946 | unixctl_command_reply(conn, 501, "no such bond"); | |
2947 | return; | |
2948 | } | |
2949 | ||
eaa71334 BP |
2950 | if (sscanf(hash_s, ETH_ADDR_SCAN_FMT, ETH_ADDR_SCAN_ARGS(mac)) |
2951 | == ETH_ADDR_SCAN_COUNT) { | |
da285df4 BP |
2952 | hash = bond_hash(mac); |
2953 | } else if (strspn(hash_s, "0123456789") == strlen(hash_s)) { | |
2954 | hash = atoi(hash_s) & BOND_MASK; | |
2955 | } else { | |
2956 | unixctl_command_reply(conn, 501, "bad hash"); | |
2957 | return; | |
2958 | } | |
2959 | ||
2960 | iface = port_lookup_iface(port, slave_s); | |
2961 | if (!iface) { | |
2962 | unixctl_command_reply(conn, 501, "no such slave"); | |
2963 | return; | |
2964 | } | |
2965 | ||
2966 | if (!iface->enabled) { | |
2967 | unixctl_command_reply(conn, 501, "cannot migrate to disabled slave"); | |
2968 | return; | |
2969 | } | |
2970 | ||
2971 | entry = &port->bond_hash[hash]; | |
2972 | ofproto_revalidate(port->bridge->ofproto, entry->iface_tag); | |
2973 | entry->iface_idx = iface->port_ifidx; | |
2974 | entry->iface_tag = tag_create_random(); | |
85c74638 | 2975 | port->bond_compat_is_stale = true; |
da285df4 BP |
2976 | unixctl_command_reply(conn, 200, "migrated"); |
2977 | } | |
2978 | ||
2979 | static void | |
8ca79daa | 2980 | bond_unixctl_set_active_slave(struct unixctl_conn *conn, const char *args_, |
c69ee87c | 2981 | void *aux OVS_UNUSED) |
da285df4 BP |
2982 | { |
2983 | char *args = (char *) args_; | |
2984 | char *save_ptr = NULL; | |
2985 | char *bond_s, *slave_s; | |
2986 | struct port *port; | |
2987 | struct iface *iface; | |
2988 | ||
2989 | bond_s = strtok_r(args, " ", &save_ptr); | |
2990 | slave_s = strtok_r(NULL, " ", &save_ptr); | |
2991 | if (!slave_s) { | |
2992 | unixctl_command_reply(conn, 501, | |
2993 | "usage: bond/set-active-slave BOND SLAVE"); | |
2994 | return; | |
2995 | } | |
2996 | ||
2997 | port = bond_find(bond_s); | |
2998 | if (!port) { | |
2999 | unixctl_command_reply(conn, 501, "no such bond"); | |
3000 | return; | |
3001 | } | |
3002 | ||
3003 | iface = port_lookup_iface(port, slave_s); | |
3004 | if (!iface) { | |
3005 | unixctl_command_reply(conn, 501, "no such slave"); | |
3006 | return; | |
3007 | } | |
3008 | ||
3009 | if (!iface->enabled) { | |
3010 | unixctl_command_reply(conn, 501, "cannot make disabled slave active"); | |
3011 | return; | |
3012 | } | |
3013 | ||
3014 | if (port->active_iface != iface->port_ifidx) { | |
3015 | ofproto_revalidate(port->bridge->ofproto, port->active_iface_tag); | |
3016 | port->active_iface = iface->port_ifidx; | |
3017 | port->active_iface_tag = tag_create_random(); | |
3018 | VLOG_INFO("port %s: active interface is now %s", | |
3019 | port->name, iface->name); | |
3020 | bond_send_learning_packets(port); | |
3021 | unixctl_command_reply(conn, 200, "done"); | |
3022 | } else { | |
3023 | unixctl_command_reply(conn, 200, "no change"); | |
3024 | } | |
3025 | } | |
3026 | ||
3027 | static void | |
3028 | enable_slave(struct unixctl_conn *conn, const char *args_, bool enable) | |
3029 | { | |
3030 | char *args = (char *) args_; | |
3031 | char *save_ptr = NULL; | |
3032 | char *bond_s, *slave_s; | |
3033 | struct port *port; | |
3034 | struct iface *iface; | |
3035 | ||
3036 | bond_s = strtok_r(args, " ", &save_ptr); | |
3037 | slave_s = strtok_r(NULL, " ", &save_ptr); | |
3038 | if (!slave_s) { | |
3039 | unixctl_command_reply(conn, 501, | |
3040 | "usage: bond/enable/disable-slave BOND SLAVE"); | |
3041 | return; | |
3042 | } | |
3043 | ||
3044 | port = bond_find(bond_s); | |
3045 | if (!port) { | |
3046 | unixctl_command_reply(conn, 501, "no such bond"); | |
3047 | return; | |
3048 | } | |
3049 | ||
3050 | iface = port_lookup_iface(port, slave_s); | |
3051 | if (!iface) { | |
3052 | unixctl_command_reply(conn, 501, "no such slave"); | |
3053 | return; | |
3054 | } | |
3055 | ||
3056 | bond_enable_slave(iface, enable); | |
3057 | unixctl_command_reply(conn, 501, enable ? "enabled" : "disabled"); | |
3058 | } | |
3059 | ||
3060 | static void | |
8ca79daa | 3061 | bond_unixctl_enable_slave(struct unixctl_conn *conn, const char *args, |
c69ee87c | 3062 | void *aux OVS_UNUSED) |
da285df4 BP |
3063 | { |
3064 | enable_slave(conn, args, true); | |
3065 | } | |
3066 | ||
3067 | static void | |
8ca79daa | 3068 | bond_unixctl_disable_slave(struct unixctl_conn *conn, const char *args, |
c69ee87c | 3069 | void *aux OVS_UNUSED) |
da285df4 BP |
3070 | { |
3071 | enable_slave(conn, args, false); | |
3072 | } | |
3073 | ||
e0644b61 | 3074 | static void |
8ca79daa | 3075 | bond_unixctl_hash(struct unixctl_conn *conn, const char *args, |
c69ee87c | 3076 | void *aux OVS_UNUSED) |
e0644b61 IC |
3077 | { |
3078 | uint8_t mac[ETH_ADDR_LEN]; | |
3079 | uint8_t hash; | |
3080 | char *hash_cstr; | |
3081 | ||
3082 | if (sscanf(args, ETH_ADDR_SCAN_FMT, ETH_ADDR_SCAN_ARGS(mac)) | |
3083 | == ETH_ADDR_SCAN_COUNT) { | |
3084 | hash = bond_hash(mac); | |
3085 | ||
3086 | hash_cstr = xasprintf("%u", hash); | |
3087 | unixctl_command_reply(conn, 200, hash_cstr); | |
3088 | free(hash_cstr); | |
3089 | } else { | |
3090 | unixctl_command_reply(conn, 501, "invalid mac"); | |
3091 | } | |
3092 | } | |
3093 | ||
da285df4 BP |
3094 | static void |
3095 | bond_init(void) | |
3096 | { | |
8ca79daa BP |
3097 | unixctl_command_register("bond/list", bond_unixctl_list, NULL); |
3098 | unixctl_command_register("bond/show", bond_unixctl_show, NULL); | |
3099 | unixctl_command_register("bond/migrate", bond_unixctl_migrate, NULL); | |
da285df4 | 3100 | unixctl_command_register("bond/set-active-slave", |
8ca79daa BP |
3101 | bond_unixctl_set_active_slave, NULL); |
3102 | unixctl_command_register("bond/enable-slave", bond_unixctl_enable_slave, | |
3103 | NULL); | |
3104 | unixctl_command_register("bond/disable-slave", bond_unixctl_disable_slave, | |
3105 | NULL); | |
3106 | unixctl_command_register("bond/hash", bond_unixctl_hash, NULL); | |
da285df4 BP |
3107 | } |
3108 | \f | |
064af421 BP |
3109 | /* Port functions. */ |
3110 | ||
76343538 | 3111 | static struct port * |
064af421 BP |
3112 | port_create(struct bridge *br, const char *name) |
3113 | { | |
3114 | struct port *port; | |
3115 | ||
ec6fde61 | 3116 | port = xzalloc(sizeof *port); |
064af421 BP |
3117 | port->bridge = br; |
3118 | port->port_idx = br->n_ports; | |
3119 | port->vlan = -1; | |
3120 | port->trunks = NULL; | |
3121 | port->name = xstrdup(name); | |
3122 | port->active_iface = -1; | |
064af421 BP |
3123 | |
3124 | if (br->n_ports >= br->allocated_ports) { | |
3125 | br->ports = x2nrealloc(br->ports, &br->allocated_ports, | |
3126 | sizeof *br->ports); | |
3127 | } | |
3128 | br->ports[br->n_ports++] = port; | |
3129 | ||
3130 | VLOG_INFO("created port %s on bridge %s", port->name, br->name); | |
3131 | bridge_flush(br); | |
76343538 BP |
3132 | |
3133 | return port; | |
064af421 BP |
3134 | } |
3135 | ||
c8143c88 BP |
3136 | static const char * |
3137 | get_port_other_config(const struct ovsrec_port *port, const char *key, | |
3138 | const char *default_value) | |
3139 | { | |
3140 | const char *value = get_ovsrec_key_value(key, | |
3141 | port->key_other_config, | |
3142 | port->value_other_config, | |
3143 | port->n_other_config); | |
3144 | return value ? value : default_value; | |
3145 | } | |
3146 | ||
064af421 | 3147 | static void |
76343538 | 3148 | port_reconfigure(struct port *port, const struct ovsrec_port *cfg) |
064af421 | 3149 | { |
76343538 | 3150 | struct shash old_ifaces, new_ifaces; |
c8143c88 | 3151 | long long int next_rebalance; |
76343538 | 3152 | struct shash_node *node; |
064af421 BP |
3153 | unsigned long *trunks; |
3154 | int vlan; | |
3155 | size_t i; | |
3156 | ||
76343538 BP |
3157 | port->cfg = cfg; |
3158 | ||
064af421 | 3159 | /* Collect old and new interfaces. */ |
76343538 BP |
3160 | shash_init(&old_ifaces); |
3161 | shash_init(&new_ifaces); | |
064af421 | 3162 | for (i = 0; i < port->n_ifaces; i++) { |
76343538 | 3163 | shash_add(&old_ifaces, port->ifaces[i]->name, port->ifaces[i]); |
064af421 | 3164 | } |
76343538 BP |
3165 | for (i = 0; i < cfg->n_interfaces; i++) { |
3166 | const char *name = cfg->interfaces[i]->name; | |
3167 | if (!shash_add_once(&new_ifaces, name, cfg->interfaces[i])) { | |
3168 | VLOG_WARN("port %s: %s specified twice as port interface", | |
3169 | port->name, name); | |
064af421 | 3170 | } |
76343538 BP |
3171 | } |
3172 | port->updelay = cfg->bond_updelay; | |
3173 | if (port->updelay < 0) { | |
3174 | port->updelay = 0; | |
3175 | } | |
3176 | port->updelay = cfg->bond_downdelay; | |
3177 | if (port->downdelay < 0) { | |
3178 | port->downdelay = 0; | |
064af421 | 3179 | } |
c8143c88 BP |
3180 | port->bond_rebalance_interval = atoi( |
3181 | get_port_other_config(cfg, "bond-rebalance-interval", "10000")); | |
3182 | if (port->bond_rebalance_interval < 1000) { | |
3183 | port->bond_rebalance_interval = 1000; | |
3184 | } | |
3185 | next_rebalance = time_msec() + port->bond_rebalance_interval; | |
3186 | if (port->bond_next_rebalance > next_rebalance) { | |
3187 | port->bond_next_rebalance = next_rebalance; | |
3188 | } | |
064af421 BP |
3189 | |
3190 | /* Get rid of deleted interfaces and add new interfaces. */ | |
76343538 BP |
3191 | SHASH_FOR_EACH (node, &old_ifaces) { |
3192 | if (!shash_find(&new_ifaces, node->name)) { | |
3193 | iface_destroy(node->data); | |
064af421 BP |
3194 | } |
3195 | } | |
76343538 BP |
3196 | SHASH_FOR_EACH (node, &new_ifaces) { |
3197 | const struct ovsrec_interface *if_cfg = node->data; | |
76343538 BP |
3198 | struct iface *iface; |
3199 | ||
a740f0de | 3200 | iface = shash_find_data(&old_ifaces, if_cfg->name); |
76343538 | 3201 | if (!iface) { |
5fbb4e18 | 3202 | iface_create(port, if_cfg); |
149f577a JG |
3203 | } else { |
3204 | iface->cfg = if_cfg; | |
064af421 BP |
3205 | } |
3206 | } | |
3207 | ||
3208 | /* Get VLAN tag. */ | |
3209 | vlan = -1; | |
76343538 BP |
3210 | if (cfg->tag) { |
3211 | if (port->n_ifaces < 2) { | |
3212 | vlan = *cfg->tag; | |
064af421 BP |
3213 | if (vlan >= 0 && vlan <= 4095) { |
3214 | VLOG_DBG("port %s: assigning VLAN tag %d", port->name, vlan); | |
76343538 BP |
3215 | } else { |
3216 | vlan = -1; | |
064af421 BP |
3217 | } |
3218 | } else { | |
3219 | /* It's possible that bonded, VLAN-tagged ports make sense. Maybe | |
3220 | * they even work as-is. But they have not been tested. */ | |
3221 | VLOG_WARN("port %s: VLAN tags not supported on bonded ports", | |
3222 | port->name); | |
3223 | } | |
3224 | } | |
3225 | if (port->vlan != vlan) { | |
3226 | port->vlan = vlan; | |
3227 | bridge_flush(port->bridge); | |
3228 | } | |
3229 | ||
3230 | /* Get trunked VLANs. */ | |
3231 | trunks = NULL; | |
3232 | if (vlan < 0) { | |
76343538 | 3233 | size_t n_errors; |
064af421 BP |
3234 | size_t i; |
3235 | ||
3236 | trunks = bitmap_allocate(4096); | |
064af421 | 3237 | n_errors = 0; |
76343538 BP |
3238 | for (i = 0; i < cfg->n_trunks; i++) { |
3239 | int trunk = cfg->trunks[i]; | |
064af421 BP |
3240 | if (trunk >= 0) { |
3241 | bitmap_set1(trunks, trunk); | |
3242 | } else { | |
3243 | n_errors++; | |
3244 | } | |
3245 | } | |
3246 | if (n_errors) { | |
3247 | VLOG_ERR("port %s: invalid values for %zu trunk VLANs", | |
76343538 | 3248 | port->name, cfg->n_trunks); |
064af421 | 3249 | } |
76343538 | 3250 | if (n_errors == cfg->n_trunks) { |
064af421 BP |
3251 | if (n_errors) { |
3252 | VLOG_ERR("port %s: no valid trunks, trunking all VLANs", | |
3253 | port->name); | |
3254 | } | |
3255 | bitmap_set_multiple(trunks, 0, 4096, 1); | |
3256 | } | |
3257 | } else { | |
76343538 BP |
3258 | if (cfg->n_trunks) { |
3259 | VLOG_ERR("port %s: ignoring trunks in favor of implicit vlan", | |
3260 | port->name); | |
064af421 BP |
3261 | } |
3262 | } | |
3263 | if (trunks == NULL | |
3264 | ? port->trunks != NULL | |
3265 | : port->trunks == NULL || !bitmap_equal(trunks, port->trunks, 4096)) { | |
3266 | bridge_flush(port->bridge); | |
3267 | } | |
3268 | bitmap_free(port->trunks); | |
3269 | port->trunks = trunks; | |
3270 | ||
76343538 BP |
3271 | shash_destroy(&old_ifaces); |
3272 | shash_destroy(&new_ifaces); | |
064af421 BP |
3273 | } |
3274 | ||
3275 | static void | |
3276 | port_destroy(struct port *port) | |
3277 | { | |
3278 | if (port) { | |
3279 | struct bridge *br = port->bridge; | |
3280 | struct port *del; | |
37e7f427 | 3281 | int i; |
064af421 BP |
3282 | |
3283 | proc_net_compat_update_vlan(port->name, NULL, 0); | |
85c74638 | 3284 | proc_net_compat_update_bond(port->name, NULL); |
064af421 BP |
3285 | |
3286 | for (i = 0; i < MAX_MIRRORS; i++) { | |
3287 | struct mirror *m = br->mirrors[i]; | |
3288 | if (m && m->out_port == port) { | |
3289 | mirror_destroy(m); | |
3290 | } | |
3291 | } | |
3292 | ||
3293 | while (port->n_ifaces > 0) { | |
3294 | iface_destroy(port->ifaces[port->n_ifaces - 1]); | |
3295 | } | |
3296 | ||
3297 | del = br->ports[port->port_idx] = br->ports[--br->n_ports]; | |
3298 | del->port_idx = port->port_idx; | |
3299 | ||
3300 | free(port->ifaces); | |
3301 | bitmap_free(port->trunks); | |
3302 | free(port->name); | |
3303 | free(port); | |
3304 | bridge_flush(br); | |
3305 | } | |
3306 | } | |
3307 | ||
3308 | static struct port * | |
3309 | port_from_dp_ifidx(const struct bridge *br, uint16_t dp_ifidx) | |
3310 | { | |
3311 | struct iface *iface = iface_from_dp_ifidx(br, dp_ifidx); | |
3312 | return iface ? iface->port : NULL; | |
3313 | } | |
3314 | ||
3315 | static struct port * | |
3316 | port_lookup(const struct bridge *br, const char *name) | |
3317 | { | |
3318 | size_t i; | |
3319 | ||
3320 | for (i = 0; i < br->n_ports; i++) { | |
3321 | struct port *port = br->ports[i]; | |
3322 | if (!strcmp(port->name, name)) { | |
3323 | return port; | |
3324 | } | |
3325 | } | |
3326 | return NULL; | |
3327 | } | |
3328 | ||
da285df4 BP |
3329 | static struct iface * |
3330 | port_lookup_iface(const struct port *port, const char *name) | |
3331 | { | |
3332 | size_t j; | |
3333 | ||
3334 | for (j = 0; j < port->n_ifaces; j++) { | |
3335 | struct iface *iface = port->ifaces[j]; | |
3336 | if (!strcmp(iface->name, name)) { | |
3337 | return iface; | |
3338 | } | |
3339 | } | |
3340 | return NULL; | |
3341 | } | |
3342 | ||
064af421 BP |
3343 | static void |
3344 | port_update_bonding(struct port *port) | |
3345 | { | |
3346 | if (port->n_ifaces < 2) { | |
3347 | /* Not a bonded port. */ | |
3348 | if (port->bond_hash) { | |
3349 | free(port->bond_hash); | |
3350 | port->bond_hash = NULL; | |
85c74638 | 3351 | port->bond_compat_is_stale = true; |
76343538 | 3352 | port->bond_fake_iface = false; |
064af421 BP |
3353 | } |
3354 | } else { | |
3355 | if (!port->bond_hash) { | |
3356 | size_t i; | |
3357 | ||
3358 | port->bond_hash = xcalloc(BOND_MASK + 1, sizeof *port->bond_hash); | |
3359 | for (i = 0; i <= BOND_MASK; i++) { | |
3360 | struct bond_entry *e = &port->bond_hash[i]; | |
3361 | e->iface_idx = -1; | |
3362 | e->tx_bytes = 0; | |
3363 | } | |
3364 | port->no_ifaces_tag = tag_create_random(); | |
3365 | bond_choose_active_iface(port); | |
c8143c88 BP |
3366 | port->bond_next_rebalance |
3367 | = time_msec() + port->bond_rebalance_interval; | |
064af421 | 3368 | } |
85c74638 | 3369 | port->bond_compat_is_stale = true; |
76343538 | 3370 | port->bond_fake_iface = port->cfg->bond_fake_iface; |
064af421 BP |
3371 | } |
3372 | } | |
3373 | ||
3374 | static void | |
3375 | port_update_bond_compat(struct port *port) | |
3376 | { | |
2aebae83 | 3377 | struct compat_bond_hash compat_hashes[BOND_MASK + 1]; |
064af421 BP |
3378 | struct compat_bond bond; |
3379 | size_t i; | |
3380 | ||
3381 | if (port->n_ifaces < 2) { | |
85c74638 | 3382 | proc_net_compat_update_bond(port->name, NULL); |
064af421 BP |
3383 | return; |
3384 | } | |
3385 | ||
3386 | bond.up = false; | |
3387 | bond.updelay = port->updelay; | |
3388 | bond.downdelay = port->downdelay; | |
2aebae83 BP |
3389 | |
3390 | bond.n_hashes = 0; | |
3391 | bond.hashes = compat_hashes; | |
3392 | if (port->bond_hash) { | |
3393 | const struct bond_entry *e; | |
3394 | for (e = port->bond_hash; e <= &port->bond_hash[BOND_MASK]; e++) { | |
3395 | if (e->iface_idx >= 0 && e->iface_idx < port->n_ifaces) { | |
3396 | struct compat_bond_hash *cbh = &bond.hashes[bond.n_hashes++]; | |
3397 | cbh->hash = e - port->bond_hash; | |
3398 | cbh->netdev_name = port->ifaces[e->iface_idx]->name; | |
3399 | } | |
3400 | } | |
3401 | } | |
3402 | ||
064af421 BP |
3403 | bond.n_slaves = port->n_ifaces; |
3404 | bond.slaves = xmalloc(port->n_ifaces * sizeof *bond.slaves); | |
3405 | for (i = 0; i < port->n_ifaces; i++) { | |
3406 | struct iface *iface = port->ifaces[i]; | |
3407 | struct compat_bond_slave *slave = &bond.slaves[i]; | |
3408 | slave->name = iface->name; | |
6643c03b JP |
3409 | |
3410 | /* We need to make the same determination as the Linux bonding | |
3411 | * code to determine whether a slave should be consider "up". | |
3412 | * The Linux function bond_miimon_inspect() supports four | |
3413 | * BOND_LINK_* states: | |
3414 | * | |
3415 | * - BOND_LINK_UP: carrier detected, updelay has passed. | |
3416 | * - BOND_LINK_FAIL: carrier lost, downdelay in progress. | |
3417 | * - BOND_LINK_DOWN: carrier lost, downdelay has passed. | |
3418 | * - BOND_LINK_BACK: carrier detected, updelay in progress. | |
3419 | * | |
3420 | * The function bond_info_show_slave() only considers BOND_LINK_UP | |
3421 | * to be "up" and anything else to be "down". | |
3422 | */ | |
3423 | slave->up = iface->enabled && iface->delay_expires == LLONG_MAX; | |
064af421 BP |
3424 | if (slave->up) { |
3425 | bond.up = true; | |
3426 | } | |
96b9b7a9 | 3427 | netdev_get_etheraddr(iface->netdev, slave->mac); |
064af421 | 3428 | } |
2aebae83 | 3429 | |
76343538 | 3430 | if (port->bond_fake_iface) { |
c6303ea1 JG |
3431 | struct netdev *bond_netdev; |
3432 | ||
149f577a | 3433 | if (!netdev_open_default(port->name, &bond_netdev)) { |
c6303ea1 JG |
3434 | if (bond.up) { |
3435 | netdev_turn_flags_on(bond_netdev, NETDEV_UP, true); | |
3436 | } else { | |
3437 | netdev_turn_flags_off(bond_netdev, NETDEV_UP, true); | |
3438 | } | |
3439 | netdev_close(bond_netdev); | |
3440 | } | |
3441 | } | |
3442 | ||
064af421 BP |
3443 | proc_net_compat_update_bond(port->name, &bond); |
3444 | free(bond.slaves); | |
3445 | } | |
3446 | ||
3447 | static void | |
3448 | port_update_vlan_compat(struct port *port) | |
3449 | { | |
3450 | struct bridge *br = port->bridge; | |
3451 | char *vlandev_name = NULL; | |
3452 | ||
3453 | if (port->vlan > 0) { | |
3454 | /* Figure out the name that the VLAN device should actually have, if it | |
3455 | * existed. This takes some work because the VLAN device would not | |
3456 | * have port->name in its name; rather, it would have the trunk port's | |
3457 | * name, and 'port' would be attached to a bridge that also had the | |
3458 | * VLAN device one of its ports. So we need to find a trunk port that | |
3459 | * includes port->vlan. | |
3460 | * | |
3461 | * There might be more than one candidate. This doesn't happen on | |
3462 | * XenServer, so if it happens we just pick the first choice in | |
3463 | * alphabetical order instead of creating multiple VLAN devices. */ | |
3464 | size_t i; | |
3465 | for (i = 0; i < br->n_ports; i++) { | |
3466 | struct port *p = br->ports[i]; | |
3467 | if (port_trunks_vlan(p, port->vlan) | |
3468 | && p->n_ifaces | |
3469 | && (!vlandev_name || strcmp(p->name, vlandev_name) <= 0)) | |
3470 | { | |
96b9b7a9 BP |
3471 | uint8_t ea[ETH_ADDR_LEN]; |
3472 | netdev_get_etheraddr(p->ifaces[0]->netdev, ea); | |
064af421 BP |
3473 | if (!eth_addr_is_multicast(ea) && |
3474 | !eth_addr_is_reserved(ea) && | |
3475 | !eth_addr_is_zero(ea)) { | |
3476 | vlandev_name = p->name; | |
3477 | } | |
3478 | } | |
3479 | } | |
3480 | } | |
3481 | proc_net_compat_update_vlan(port->name, vlandev_name, port->vlan); | |
3482 | } | |
3483 | \f | |
3484 | /* Interface functions. */ | |
3485 | ||
76343538 | 3486 | static struct iface * |
a740f0de | 3487 | iface_create(struct port *port, const struct ovsrec_interface *if_cfg) |
064af421 | 3488 | { |
064af421 | 3489 | struct iface *iface; |
a740f0de JG |
3490 | char *name = if_cfg->name; |
3491 | int error; | |
064af421 | 3492 | |
ec6fde61 | 3493 | iface = xzalloc(sizeof *iface); |
064af421 BP |
3494 | iface->port = port; |
3495 | iface->port_ifidx = port->n_ifaces; | |
3496 | iface->name = xstrdup(name); | |
3497 | iface->dp_ifidx = -1; | |
3498 | iface->tag = tag_create_random(); | |
064af421 | 3499 | iface->delay_expires = LLONG_MAX; |
0c6aea3f | 3500 | iface->netdev = NULL; |
149f577a | 3501 | iface->cfg = if_cfg; |
064af421 BP |
3502 | |
3503 | if (port->n_ifaces >= port->allocated_ifaces) { | |
3504 | port->ifaces = x2nrealloc(port->ifaces, &port->allocated_ifaces, | |
3505 | sizeof *port->ifaces); | |
3506 | } | |
3507 | port->ifaces[port->n_ifaces++] = iface; | |
3508 | if (port->n_ifaces > 1) { | |
3509 | port->bridge->has_bonded_ports = true; | |
3510 | } | |
3511 | ||
a740f0de JG |
3512 | /* Attempt to create the network interface in case it |
3513 | * doesn't exist yet. */ | |
149f577a JG |
3514 | if (!iface_is_internal(port->bridge, iface->name)) { |
3515 | error = set_up_iface(if_cfg, iface, true); | |
3516 | if (error) { | |
3517 | VLOG_WARN("could not create iface %s: %s", iface->name, | |
3518 | strerror(error)); | |
3519 | } | |
a740f0de JG |
3520 | } |
3521 | ||
064af421 BP |
3522 | VLOG_DBG("attached network device %s to port %s", iface->name, port->name); |
3523 | ||
064af421 | 3524 | bridge_flush(port->bridge); |
76343538 BP |
3525 | |
3526 | return iface; | |
064af421 BP |
3527 | } |
3528 | ||
3529 | static void | |
3530 | iface_destroy(struct iface *iface) | |
3531 | { | |
3532 | if (iface) { | |
3533 | struct port *port = iface->port; | |
3534 | struct bridge *br = port->bridge; | |
3535 | bool del_active = port->active_iface == iface->port_ifidx; | |
3536 | struct iface *del; | |
3537 | ||
3538 | if (iface->dp_ifidx >= 0) { | |
3539 | port_array_set(&br->ifaces, iface->dp_ifidx, NULL); | |
3540 | } | |
3541 | ||
3542 | del = port->ifaces[iface->port_ifidx] = port->ifaces[--port->n_ifaces]; | |
3543 | del->port_ifidx = iface->port_ifidx; | |
3544 | ||
0c6aea3f | 3545 | netdev_close(iface->netdev); |
064af421 BP |
3546 | |
3547 | if (del_active) { | |
3548 | ofproto_revalidate(port->bridge->ofproto, port->active_iface_tag); | |
3549 | bond_choose_active_iface(port); | |
2303f3b2 | 3550 | bond_send_learning_packets(port); |
064af421 BP |
3551 | } |
3552 | ||
a740f0de JG |
3553 | free(iface->name); |
3554 | free(iface); | |
3555 | ||
064af421 BP |
3556 | bridge_flush(port->bridge); |
3557 | } | |
3558 | } | |
3559 | ||
3560 | static struct iface * | |
3561 | iface_lookup(const struct bridge *br, const char *name) | |
3562 | { | |
3563 | size_t i, j; | |
3564 | ||
3565 | for (i = 0; i < br->n_ports; i++) { | |
3566 | struct port *port = br->ports[i]; | |
3567 | for (j = 0; j < port->n_ifaces; j++) { | |
3568 | struct iface *iface = port->ifaces[j]; | |
3569 | if (!strcmp(iface->name, name)) { | |
3570 | return iface; | |
3571 | } | |
3572 | } | |
3573 | } | |
3574 | return NULL; | |
3575 | } | |
3576 | ||
3577 | static struct iface * | |
3578 | iface_from_dp_ifidx(const struct bridge *br, uint16_t dp_ifidx) | |
3579 | { | |
3580 | return port_array_get(&br->ifaces, dp_ifidx); | |
3581 | } | |
557d8e6c BP |
3582 | |
3583 | /* Returns true if 'iface' is the name of an "internal" interface on bridge | |
3584 | * 'br', that is, an interface that is entirely simulated within the datapath. | |
3585 | * The local port (ODPP_LOCAL) is always an internal interface. Other local | |
3586 | * interfaces are created by setting "iface.<iface>.internal = true". | |
3587 | * | |
3588 | * In addition, we have a kluge-y feature that creates an internal port with | |
3589 | * the name of a bonded port if "bonding.<bondname>.fake-iface = true" is set. | |
3590 | * This feature needs to go away in the long term. Until then, this is one | |
3591 | * reason why this function takes a name instead of a struct iface: the fake | |
3592 | * interfaces created this way do not have a struct iface. */ | |
3593 | static bool | |
76343538 | 3594 | iface_is_internal(const struct bridge *br, const char *if_name) |
557d8e6c | 3595 | { |
76343538 BP |
3596 | /* XXX wastes time */ |
3597 | struct iface *iface; | |
3598 | struct port *port; | |
3599 | ||
3600 | if (!strcmp(if_name, br->name)) { | |
557d8e6c BP |
3601 | return true; |
3602 | } | |
3603 | ||
76343538 BP |
3604 | iface = iface_lookup(br, if_name); |
3605 | if (iface && !strcmp(iface->cfg->type, "internal")) { | |
3606 | return true; | |
557d8e6c BP |
3607 | } |
3608 | ||
76343538 | 3609 | port = port_lookup(br, if_name); |
2c30e5d1 | 3610 | if (port && port->n_ifaces > 1 && port->cfg->bond_fake_iface) { |
76343538 BP |
3611 | return true; |
3612 | } | |
557d8e6c BP |
3613 | return false; |
3614 | } | |
52df17e7 BP |
3615 | |
3616 | /* Set Ethernet address of 'iface', if one is specified in the configuration | |
3617 | * file. */ | |
3618 | static void | |
3619 | iface_set_mac(struct iface *iface) | |
3620 | { | |
76343538 | 3621 | uint8_t ea[ETH_ADDR_LEN]; |
52df17e7 | 3622 | |
76343538 | 3623 | if (iface->cfg->mac && eth_addr_from_string(iface->cfg->mac, ea)) { |
52df17e7 BP |
3624 | if (eth_addr_is_multicast(ea)) { |
3625 | VLOG_ERR("interface %s: cannot set MAC to multicast address", | |
3626 | iface->name); | |
3627 | } else if (iface->dp_ifidx == ODPP_LOCAL) { | |
3628 | VLOG_ERR("ignoring iface.%s.mac; use bridge.%s.mac instead", | |
3629 | iface->name, iface->name); | |
3630 | } else { | |
4d678233 | 3631 | int error = netdev_set_etheraddr(iface->netdev, ea); |
52df17e7 BP |
3632 | if (error) { |
3633 | VLOG_ERR("interface %s: setting MAC failed (%s)", | |
3634 | iface->name, strerror(error)); | |
3635 | } | |
3636 | } | |
3637 | } | |
3638 | } | |
064af421 BP |
3639 | \f |
3640 | /* Port mirroring. */ | |
3641 | ||
3642 | static void | |
37e7f427 | 3643 | mirror_reconfigure(struct bridge *br) |
064af421 | 3644 | { |
37e7f427 BP |
3645 | struct shash old_mirrors, new_mirrors; |
3646 | struct shash_node *node; | |
f2d7fd66 | 3647 | unsigned long *rspan_vlans; |
37e7f427 | 3648 | int i; |
064af421 | 3649 | |
37e7f427 BP |
3650 | /* Collect old mirrors. */ |
3651 | shash_init(&old_mirrors); | |
064af421 BP |
3652 | for (i = 0; i < MAX_MIRRORS; i++) { |
3653 | if (br->mirrors[i]) { | |
37e7f427 | 3654 | shash_add(&old_mirrors, br->mirrors[i]->name, br->mirrors[i]); |
064af421 BP |
3655 | } |
3656 | } | |
3657 | ||
37e7f427 BP |
3658 | /* Collect new mirrors. */ |
3659 | shash_init(&new_mirrors); | |
3660 | for (i = 0; i < br->cfg->n_mirrors; i++) { | |
3661 | struct ovsrec_mirror *cfg = br->cfg->mirrors[i]; | |
3662 | if (!shash_add_once(&new_mirrors, cfg->name, cfg)) { | |
3663 | VLOG_WARN("bridge %s: %s specified twice as mirror", | |
3664 | br->name, cfg->name); | |
064af421 BP |
3665 | } |
3666 | } | |
37e7f427 BP |
3667 | |
3668 | /* Get rid of deleted mirrors and add new mirrors. */ | |
3669 | SHASH_FOR_EACH (node, &old_mirrors) { | |
3670 | if (!shash_find(&new_mirrors, node->name)) { | |
3671 | mirror_destroy(node->data); | |
064af421 BP |
3672 | } |
3673 | } | |
37e7f427 BP |
3674 | SHASH_FOR_EACH (node, &new_mirrors) { |
3675 | struct mirror *mirror = shash_find_data(&old_mirrors, node->name); | |
3676 | if (!mirror) { | |
3677 | mirror = mirror_create(br, node->name); | |
3678 | if (!mirror) { | |
3679 | break; | |
3680 | } | |
064af421 | 3681 | } |
37e7f427 | 3682 | mirror_reconfigure_one(mirror, node->data); |
064af421 | 3683 | } |
37e7f427 BP |
3684 | shash_destroy(&old_mirrors); |
3685 | shash_destroy(&new_mirrors); | |
064af421 BP |
3686 | |
3687 | /* Update port reserved status. */ | |
3688 | for (i = 0; i < br->n_ports; i++) { | |
3689 | br->ports[i]->is_mirror_output_port = false; | |
3690 | } | |
3691 | for (i = 0; i < MAX_MIRRORS; i++) { | |
3692 | struct mirror *m = br->mirrors[i]; | |
3693 | if (m && m->out_port) { | |
3694 | m->out_port->is_mirror_output_port = true; | |
3695 | } | |
3696 | } | |
f2d7fd66 | 3697 | |
8f30d09a | 3698 | /* Update flooded vlans (for RSPAN). */ |
f2d7fd66 | 3699 | rspan_vlans = NULL; |
37e7f427 | 3700 | if (br->cfg->n_flood_vlans) { |
f2d7fd66 JG |
3701 | rspan_vlans = bitmap_allocate(4096); |
3702 | ||
37e7f427 BP |
3703 | for (i = 0; i < br->cfg->n_flood_vlans; i++) { |
3704 | int64_t vlan = br->cfg->flood_vlans[i]; | |
3705 | if (vlan >= 0 && vlan < 4096) { | |
f2d7fd66 | 3706 | bitmap_set1(rspan_vlans, vlan); |
37e7f427 | 3707 | VLOG_INFO("bridge %s: disabling learning on vlan %"PRId64, |
42061b2a | 3708 | br->name, vlan); |
f2d7fd66 | 3709 | } else { |
37e7f427 BP |
3710 | VLOG_ERR("bridge %s: invalid value %"PRId64 "for flood VLAN", |
3711 | br->name, vlan); | |
f2d7fd66 JG |
3712 | } |
3713 | } | |
3714 | } | |
8f30d09a | 3715 | if (mac_learning_set_flood_vlans(br->ml, rspan_vlans)) { |
f2d7fd66 JG |
3716 | bridge_flush(br); |
3717 | } | |
064af421 BP |
3718 | } |
3719 | ||
37e7f427 | 3720 | static struct mirror * |
064af421 BP |
3721 | mirror_create(struct bridge *br, const char *name) |
3722 | { | |
3723 | struct mirror *m; | |
3724 | size_t i; | |
3725 | ||
3726 | for (i = 0; ; i++) { | |
3727 | if (i >= MAX_MIRRORS) { | |
3728 | VLOG_WARN("bridge %s: maximum of %d port mirrors reached, " | |
3729 | "cannot create %s", br->name, MAX_MIRRORS, name); | |
37e7f427 | 3730 | return NULL; |
064af421 BP |
3731 | } |
3732 | if (!br->mirrors[i]) { | |
3733 | break; | |
3734 | } | |
3735 | } | |
3736 | ||
3737 | VLOG_INFO("created port mirror %s on bridge %s", name, br->name); | |
3738 | bridge_flush(br); | |
3739 | ||
ec6fde61 | 3740 | br->mirrors[i] = m = xzalloc(sizeof *m); |
064af421 BP |
3741 | m->bridge = br; |
3742 | m->idx = i; | |
3743 | m->name = xstrdup(name); | |
37e7f427 BP |
3744 | shash_init(&m->src_ports); |
3745 | shash_init(&m->dst_ports); | |
064af421 BP |
3746 | m->vlans = NULL; |
3747 | m->n_vlans = 0; | |
3748 | m->out_vlan = -1; | |
3749 | m->out_port = NULL; | |
37e7f427 BP |
3750 | |
3751 | return m; | |
064af421 BP |
3752 | } |
3753 | ||
3754 | static void | |
3755 | mirror_destroy(struct mirror *m) | |
3756 | { | |
3757 | if (m) { | |
3758 | struct bridge *br = m->bridge; | |
3759 | size_t i; | |
3760 | ||
3761 | for (i = 0; i < br->n_ports; i++) { | |
3762 | br->ports[i]->src_mirrors &= ~(MIRROR_MASK_C(1) << m->idx); | |
3763 | br->ports[i]->dst_mirrors &= ~(MIRROR_MASK_C(1) << m->idx); | |
3764 | } | |
3765 | ||
37e7f427 BP |
3766 | shash_destroy(&m->src_ports); |
3767 | shash_destroy(&m->dst_ports); | |
064af421 BP |
3768 | free(m->vlans); |
3769 | ||
3770 | m->bridge->mirrors[m->idx] = NULL; | |
3771 | free(m); | |
3772 | ||
3773 | bridge_flush(br); | |
3774 | } | |
3775 | } | |
3776 | ||
3777 | static void | |
37e7f427 BP |
3778 | mirror_collect_ports(struct mirror *m, struct ovsrec_port **ports, int n_ports, |
3779 | struct shash *names) | |
064af421 | 3780 | { |
064af421 BP |
3781 | size_t i; |
3782 | ||
37e7f427 BP |
3783 | for (i = 0; i < n_ports; i++) { |
3784 | const char *name = ports[i]->name; | |
064af421 | 3785 | if (port_lookup(m->bridge, name)) { |
37e7f427 | 3786 | shash_add_once(names, name, NULL); |
064af421 | 3787 | } else { |
37e7f427 BP |
3788 | VLOG_WARN("bridge %s: mirror %s cannot match on nonexistent " |
3789 | "port %s", m->bridge->name, m->name, name); | |
064af421 BP |
3790 | } |
3791 | } | |
064af421 BP |
3792 | } |
3793 | ||
3794 | static size_t | |
37e7f427 BP |
3795 | mirror_collect_vlans(struct mirror *m, const struct ovsrec_mirror *cfg, |
3796 | int **vlans) | |
064af421 | 3797 | { |
37e7f427 BP |
3798 | size_t n_vlans; |
3799 | size_t i; | |
064af421 | 3800 | |
0b523ea7 | 3801 | *vlans = xmalloc(sizeof **vlans * cfg->n_select_vlan); |
064af421 | 3802 | n_vlans = 0; |
37e7f427 BP |
3803 | for (i = 0; i < cfg->n_select_vlan; i++) { |
3804 | int64_t vlan = cfg->select_vlan[i]; | |
3805 | if (vlan < 0 || vlan > 4095) { | |
3806 | VLOG_WARN("bridge %s: mirror %s selects invalid VLAN %"PRId64, | |
3807 | m->bridge->name, m->name, vlan); | |
064af421 BP |
3808 | } else { |
3809 | (*vlans)[n_vlans++] = vlan; | |
3810 | } | |
3811 | } | |
3812 | return n_vlans; | |
3813 | } | |
3814 | ||
3815 | static bool | |
3816 | vlan_is_mirrored(const struct mirror *m, int vlan) | |
3817 | { | |
3818 | size_t i; | |
3819 | ||
3820 | for (i = 0; i < m->n_vlans; i++) { | |
3821 | if (m->vlans[i] == vlan) { | |
3822 | return true; | |
3823 | } | |
3824 | } | |
3825 | return false; | |
3826 | } | |
3827 | ||
3828 | static bool | |
3829 | port_trunks_any_mirrored_vlan(const struct mirror *m, const struct port *p) | |
3830 | { | |
3831 | size_t i; | |
3832 | ||
3833 | for (i = 0; i < m->n_vlans; i++) { | |
3834 | if (port_trunks_vlan(p, m->vlans[i])) { | |
3835 | return true; | |
3836 | } | |
3837 | } | |
3838 | return false; | |
3839 | } | |
3840 | ||
3841 | static void | |
37e7f427 | 3842 | mirror_reconfigure_one(struct mirror *m, struct ovsrec_mirror *cfg) |
064af421 | 3843 | { |
37e7f427 | 3844 | struct shash src_ports, dst_ports; |
064af421 | 3845 | mirror_mask_t mirror_bit; |
064af421 BP |
3846 | struct port *out_port; |
3847 | int out_vlan; | |
3848 | size_t n_vlans; | |
3849 | int *vlans; | |
3850 | size_t i; | |
064af421 BP |
3851 | |
3852 | /* Get output port. */ | |
37e7f427 BP |
3853 | if (cfg->output_port) { |
3854 | out_port = port_lookup(m->bridge, cfg->output_port->name); | |
064af421 | 3855 | if (!out_port) { |
37e7f427 BP |
3856 | VLOG_ERR("bridge %s: mirror %s outputs to port not on bridge", |
3857 | m->bridge->name, m->name); | |
064af421 | 3858 | mirror_destroy(m); |
064af421 BP |
3859 | return; |
3860 | } | |
3861 | out_vlan = -1; | |
3862 | ||
37e7f427 BP |
3863 | if (cfg->output_vlan) { |
3864 | VLOG_ERR("bridge %s: mirror %s specifies both output port and " | |
3865 | "output vlan; ignoring output vlan", | |
3866 | m->bridge->name, m->name); | |
064af421 | 3867 | } |
37e7f427 | 3868 | } else if (cfg->output_vlan) { |
064af421 | 3869 | out_port = NULL; |
37e7f427 | 3870 | out_vlan = *cfg->output_vlan; |
064af421 | 3871 | } else { |
37e7f427 BP |
3872 | VLOG_ERR("bridge %s: mirror %s does not specify output; ignoring", |
3873 | m->bridge->name, m->name); | |
064af421 | 3874 | mirror_destroy(m); |
064af421 BP |
3875 | return; |
3876 | } | |
3877 | ||
37e7f427 BP |
3878 | shash_init(&src_ports); |
3879 | shash_init(&dst_ports); | |
939ff267 BP |
3880 | if (cfg->select_all) { |
3881 | for (i = 0; i < m->bridge->n_ports; i++) { | |
3882 | const char *name = m->bridge->ports[i]->name; | |
3883 | shash_add_once(&src_ports, name, NULL); | |
3884 | shash_add_once(&dst_ports, name, NULL); | |
3885 | } | |
3886 | vlans = NULL; | |
3887 | n_vlans = 0; | |
3888 | } else { | |
3889 | /* Get ports, and drop duplicates and ports that don't exist. */ | |
3890 | mirror_collect_ports(m, cfg->select_src_port, cfg->n_select_src_port, | |
3891 | &src_ports); | |
3892 | mirror_collect_ports(m, cfg->select_dst_port, cfg->n_select_dst_port, | |
3893 | &dst_ports); | |
064af421 | 3894 | |
939ff267 BP |
3895 | /* Get all the vlans, and drop duplicate and invalid vlans. */ |
3896 | n_vlans = mirror_collect_vlans(m, cfg, &vlans); | |
37e7f427 | 3897 | } |
064af421 BP |
3898 | |
3899 | /* Update mirror data. */ | |
37e7f427 BP |
3900 | if (!shash_equal_keys(&m->src_ports, &src_ports) |
3901 | || !shash_equal_keys(&m->dst_ports, &dst_ports) | |
064af421 BP |
3902 | || m->n_vlans != n_vlans |
3903 | || memcmp(m->vlans, vlans, sizeof *vlans * n_vlans) | |
3904 | || m->out_port != out_port | |
3905 | || m->out_vlan != out_vlan) { | |
3906 | bridge_flush(m->bridge); | |
3907 | } | |
37e7f427 BP |
3908 | shash_swap(&m->src_ports, &src_ports); |
3909 | shash_swap(&m->dst_ports, &dst_ports); | |
064af421 BP |
3910 | free(m->vlans); |
3911 | m->vlans = vlans; | |
3912 | m->n_vlans = n_vlans; | |
3913 | m->out_port = out_port; | |
3914 | m->out_vlan = out_vlan; | |
3915 | ||
064af421 BP |
3916 | /* Update ports. */ |
3917 | mirror_bit = MIRROR_MASK_C(1) << m->idx; | |
3918 | for (i = 0; i < m->bridge->n_ports; i++) { | |
3919 | struct port *port = m->bridge->ports[i]; | |
3920 | ||
939ff267 | 3921 | if (shash_find(&m->src_ports, port->name) |
064af421 BP |
3922 | || (m->n_vlans |
3923 | && (!port->vlan | |
3924 | ? port_trunks_any_mirrored_vlan(m, port) | |
3925 | : vlan_is_mirrored(m, port->vlan)))) { | |
3926 | port->src_mirrors |= mirror_bit; | |
3927 | } else { | |
3928 | port->src_mirrors &= ~mirror_bit; | |
3929 | } | |
3930 | ||
939ff267 | 3931 | if (shash_find(&m->dst_ports, port->name)) { |
064af421 BP |
3932 | port->dst_mirrors |= mirror_bit; |
3933 | } else { | |
3934 | port->dst_mirrors &= ~mirror_bit; | |
3935 | } | |
3936 | } | |
3937 | ||
3938 | /* Clean up. */ | |
37e7f427 BP |
3939 | shash_destroy(&src_ports); |
3940 | shash_destroy(&dst_ports); | |
064af421 | 3941 | } |