2 * Copyright (c) 2014, 2015 Nicira, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include "tnl-ports.h"
24 #include "classifier.h"
25 #include "dynamic-string.h"
29 #include "ovs-thread.h"
31 #include "tnl-arp-cache.h"
32 #include "ovs-thread.h"
36 static struct ovs_mutex mutex = OVS_MUTEX_INITIALIZER;
37 static struct classifier cls; /* Tunnel ports. */
45 char dev_name[IFNAMSIZ];
48 static struct ovs_list addr_list;
53 char dev_name[IFNAMSIZ];
57 static struct ovs_list port_list;
62 struct ovs_refcount ref_cnt;
63 char dev_name[IFNAMSIZ];
66 static struct tnl_port_in *
67 tnl_port_cast(const struct cls_rule *cr)
69 BUILD_ASSERT_DECL(offsetof(struct tnl_port_in, cr) == 0);
71 return CONTAINER_OF(cr, struct tnl_port_in, cr);
75 tnl_port_free(struct tnl_port_in *p)
77 cls_rule_destroy(&p->cr);
82 tnl_port_init_flow(struct flow *flow, struct eth_addr mac,
83 ovs_be32 addr, ovs_be16 udp_port)
85 memset(flow, 0, sizeof *flow);
87 flow->dl_type = htons(ETH_TYPE_IP);
92 flow->nw_proto = IPPROTO_UDP;
94 flow->nw_proto = IPPROTO_GRE;
96 flow->tp_dst = udp_port;
100 map_insert(odp_port_t port, struct eth_addr mac, ovs_be32 addr,
101 ovs_be16 udp_port, const char dev_name[])
103 const struct cls_rule *cr;
104 struct tnl_port_in *p;
107 memset(&match, 0, sizeof match);
108 tnl_port_init_flow(&match.flow, mac, addr, udp_port);
111 cr = classifier_lookup(&cls, CLS_MAX_VERSION, &match.flow, NULL);
112 p = tnl_port_cast(cr);
113 /* Try again if the rule was released before we get the reference. */
114 } while (p && !ovs_refcount_try_ref_rcu(&p->ref_cnt));
117 p = xzalloc(sizeof *p);
120 match.wc.masks.dl_type = OVS_BE16_MAX;
121 match.wc.masks.nw_proto = 0xff;
122 match.wc.masks.nw_frag = 0xff; /* XXX: No fragments support. */
123 match.wc.masks.tp_dst = OVS_BE16_MAX;
124 match.wc.masks.nw_dst = OVS_BE32_MAX;
125 match.wc.masks.vlan_tci = OVS_BE16_MAX;
126 memset(&match.wc.masks.dl_dst, 0xff, sizeof (struct eth_addr));
128 cls_rule_init(&p->cr, &match, 0); /* Priority == 0. */
129 ovs_refcount_init(&p->ref_cnt);
130 ovs_strlcpy(p->dev_name, dev_name, sizeof p->dev_name);
132 classifier_insert(&cls, &p->cr, CLS_MIN_VERSION, NULL, 0);
137 tnl_port_map_insert(odp_port_t port,
138 ovs_be16 udp_port, const char dev_name[])
141 struct ip_device *ip_dev;
143 ovs_mutex_lock(&mutex);
144 LIST_FOR_EACH(p, node, &port_list) {
145 if (udp_port == p->udp_port) {
150 p = xzalloc(sizeof *p);
152 p->udp_port = udp_port;
153 ovs_strlcpy(p->dev_name, dev_name, sizeof p->dev_name);
154 list_insert(&port_list, &p->node);
156 LIST_FOR_EACH(ip_dev, node, &addr_list) {
157 map_insert(p->port, ip_dev->mac, ip_dev->addr,
158 p->udp_port, p->dev_name);
162 ovs_mutex_unlock(&mutex);
166 tnl_port_unref(const struct cls_rule *cr)
168 struct tnl_port_in *p = tnl_port_cast(cr);
170 if (cr && ovs_refcount_unref_relaxed(&p->ref_cnt) == 1) {
171 if (classifier_remove(&cls, cr)) {
172 ovsrcu_postpone(tnl_port_free, p);
178 map_delete(struct eth_addr mac, ovs_be32 addr, ovs_be16 udp_port)
180 const struct cls_rule *cr;
183 tnl_port_init_flow(&flow, mac, addr, udp_port);
185 cr = classifier_lookup(&cls, CLS_MAX_VERSION, &flow, NULL);
190 tnl_port_map_delete(ovs_be16 udp_port)
192 struct tnl_port *p, *next;
193 struct ip_device *ip_dev;
196 ovs_mutex_lock(&mutex);
197 LIST_FOR_EACH_SAFE(p, next, node, &port_list) {
198 if (p->udp_port == udp_port) {
199 list_remove(&p->node);
208 LIST_FOR_EACH(ip_dev, node, &addr_list) {
209 map_delete(ip_dev->mac, ip_dev->addr, udp_port);
214 ovs_mutex_unlock(&mutex);
217 /* 'flow' is non-const to allow for temporary modifications during the lookup.
218 * Any changes are restored before returning. */
220 tnl_port_map_lookup(struct flow *flow, struct flow_wildcards *wc)
222 const struct cls_rule *cr = classifier_lookup(&cls, CLS_MAX_VERSION, flow,
225 return (cr) ? tnl_port_cast(cr)->portno : ODPP_NONE;
229 tnl_port_show_v(struct ds *ds)
231 const struct tnl_port_in *p;
233 CLS_FOR_EACH(p, cr, &cls) {
234 struct odputil_keybuf keybuf;
235 struct odputil_keybuf maskbuf;
237 const struct nlattr *key, *mask;
238 size_t key_len, mask_len;
239 struct flow_wildcards wc;
241 struct odp_flow_key_parms odp_parms = {
246 ds_put_format(ds, "%s (%"PRIu32") : ", p->dev_name, p->portno);
247 minimask_expand(p->cr.match.mask, &wc);
248 miniflow_expand(p->cr.match.flow, &flow);
251 odp_parms.odp_in_port = flow.in_port.odp_port;
252 odp_parms.support.recirc = true;
253 ofpbuf_use_stack(&buf, &keybuf, sizeof keybuf);
254 odp_flow_key_from_flow(&odp_parms, &buf);
259 odp_parms.odp_in_port = wc.masks.in_port.odp_port;
260 odp_parms.support.recirc = false;
261 ofpbuf_use_stack(&buf, &maskbuf, sizeof maskbuf);
262 odp_flow_key_from_mask(&odp_parms, &buf);
267 odp_flow_format(key, key_len, mask, mask_len, NULL, ds, false);
268 ds_put_format(ds, "\n");
273 tnl_port_show(struct unixctl_conn *conn, int argc OVS_UNUSED,
274 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
276 struct ds ds = DS_EMPTY_INITIALIZER;
279 ds_put_format(&ds, "Listening ports:\n");
280 ovs_mutex_lock(&mutex);
282 if (!strcasecmp(argv[1], "-v")) {
283 tnl_port_show_v(&ds);
288 LIST_FOR_EACH(p, node, &port_list) {
289 ds_put_format(&ds, "%s (%"PRIu32")\n", p->dev_name, p->port);
293 ovs_mutex_unlock(&mutex);
294 unixctl_command_reply(conn, ds_cstr(&ds));
299 map_insert_ipdev(struct ip_device *ip_dev)
303 LIST_FOR_EACH(p, node, &port_list) {
304 map_insert(p->port, ip_dev->mac, ip_dev->addr,
305 p->udp_port, p->dev_name);
310 insert_ipdev(const char dev_name[])
312 struct ip_device *ip_dev;
313 enum netdev_flags flags;
317 error = netdev_open(dev_name, NULL, &dev);
322 error = netdev_get_flags(dev, &flags);
323 if (error || (flags & NETDEV_LOOPBACK)) {
328 ip_dev = xzalloc(sizeof *ip_dev);
330 ip_dev->change_seq = netdev_get_change_seq(dev);
331 error = netdev_get_etheraddr(ip_dev->dev, &ip_dev->mac);
335 error = netdev_get_in4(ip_dev->dev, (struct in_addr *)&ip_dev->addr, NULL);
339 ovs_strlcpy(ip_dev->dev_name, netdev_get_name(dev), sizeof ip_dev->dev_name);
341 list_insert(&addr_list, &ip_dev->node);
342 map_insert_ipdev(ip_dev);
346 delete_ipdev(struct ip_device *ip_dev)
350 LIST_FOR_EACH(p, node, &port_list) {
351 map_delete(ip_dev->mac, ip_dev->addr, p->udp_port);
354 list_remove(&ip_dev->node);
355 netdev_close(ip_dev->dev);
360 tnl_port_map_insert_ipdev(const char dev_name[])
362 struct ip_device *ip_dev, *next;
364 ovs_mutex_lock(&mutex);
366 LIST_FOR_EACH_SAFE(ip_dev, next, node, &addr_list) {
367 if (!strcmp(netdev_get_name(ip_dev->dev), dev_name)) {
368 if (ip_dev->change_seq == netdev_get_change_seq(ip_dev->dev)) {
371 /* Address changed. */
372 delete_ipdev(ip_dev);
376 insert_ipdev(dev_name);
379 ovs_mutex_unlock(&mutex);
383 tnl_port_map_delete_ipdev(const char dev_name[])
385 struct ip_device *ip_dev, *next;
387 ovs_mutex_lock(&mutex);
388 LIST_FOR_EACH_SAFE(ip_dev, next, node, &addr_list) {
389 if (!strcmp(netdev_get_name(ip_dev->dev), dev_name)) {
390 delete_ipdev(ip_dev);
393 ovs_mutex_unlock(&mutex);
397 tnl_port_map_run(void)
399 struct ip_device *ip_dev, *next;
401 ovs_mutex_lock(&mutex);
402 LIST_FOR_EACH_SAFE(ip_dev, next, node, &addr_list) {
403 char dev_name[IFNAMSIZ];
405 if (ip_dev->change_seq == netdev_get_change_seq(ip_dev->dev)) {
409 /* Address changed. */
410 ovs_strlcpy(dev_name, ip_dev->dev_name, sizeof dev_name);
411 delete_ipdev(ip_dev);
412 insert_ipdev(dev_name);
414 ovs_mutex_unlock(&mutex);
418 tnl_port_map_init(void)
420 classifier_init(&cls, flow_segment_u64s);
421 list_init(&addr_list);
422 list_init(&port_list);
423 unixctl_command_register("tnl/ports/show", "-v", 0, 1, tnl_port_show, NULL);