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72865317 | 1 | /* |
ff073a71 | 2 | * Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014 Nicira, Inc. |
72865317 BP |
3 | * |
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: | |
7 | * | |
8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
9 | * | |
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. | |
15 | */ | |
16 | ||
17 | #include <config.h> | |
18 | #include "dpif.h" | |
19 | ||
72865317 BP |
20 | #include <ctype.h> |
21 | #include <errno.h> | |
22 | #include <fcntl.h> | |
23 | #include <inttypes.h> | |
72865317 | 24 | #include <netinet/in.h> |
9d82ec47 | 25 | #include <sys/socket.h> |
7f3adc00 | 26 | #include <net/if.h> |
cdee00fd | 27 | #include <stdint.h> |
72865317 BP |
28 | #include <stdlib.h> |
29 | #include <string.h> | |
30 | #include <sys/ioctl.h> | |
31 | #include <sys/stat.h> | |
72865317 BP |
32 | #include <unistd.h> |
33 | ||
2c0ea78f | 34 | #include "classifier.h" |
72865317 | 35 | #include "csum.h" |
614c4892 | 36 | #include "dpif.h" |
72865317 | 37 | #include "dpif-provider.h" |
614c4892 | 38 | #include "dummy.h" |
36956a7d | 39 | #include "dynamic-string.h" |
72865317 BP |
40 | #include "flow.h" |
41 | #include "hmap.h" | |
6c3eee82 | 42 | #include "latch.h" |
72865317 | 43 | #include "list.h" |
8c301900 | 44 | #include "meta-flow.h" |
72865317 | 45 | #include "netdev.h" |
de281153 | 46 | #include "netdev-vport.h" |
cdee00fd | 47 | #include "netlink.h" |
f094af7b | 48 | #include "odp-execute.h" |
72865317 BP |
49 | #include "odp-util.h" |
50 | #include "ofp-print.h" | |
51 | #include "ofpbuf.h" | |
61e7deb1 | 52 | #include "ovs-rcu.h" |
72865317 BP |
53 | #include "packets.h" |
54 | #include "poll-loop.h" | |
26c6b6cd | 55 | #include "random.h" |
d33ed218 | 56 | #include "seq.h" |
462278db | 57 | #include "shash.h" |
0cbfe35d | 58 | #include "sset.h" |
72865317 | 59 | #include "timeval.h" |
74cc3969 | 60 | #include "unixctl.h" |
72865317 | 61 | #include "util.h" |
72865317 | 62 | #include "vlog.h" |
5136ce49 | 63 | |
d98e6007 | 64 | VLOG_DEFINE_THIS_MODULE(dpif_netdev); |
72865317 | 65 | |
2c0ea78f GS |
66 | /* By default, choose a priority in the middle. */ |
67 | #define NETDEV_RULE_PRIORITY 0x8000 | |
68 | ||
72865317 | 69 | /* Configuration parameters. */ |
72865317 BP |
70 | enum { MAX_FLOWS = 65536 }; /* Maximum number of flows in flow table. */ |
71 | ||
72 | /* Enough headroom to add a vlan tag, plus an extra 2 bytes to allow IP | |
73 | * headers to be aligned on a 4-byte boundary. */ | |
74 | enum { DP_NETDEV_HEADROOM = 2 + VLAN_HEADER_LEN }; | |
75 | ||
856081f6 BP |
76 | /* Queues. */ |
77 | enum { N_QUEUES = 2 }; /* Number of queues for dpif_recv(). */ | |
78 | enum { MAX_QUEUE_LEN = 128 }; /* Maximum number of packets per queue. */ | |
79 | enum { QUEUE_MASK = MAX_QUEUE_LEN - 1 }; | |
80 | BUILD_ASSERT_DECL(IS_POW2(MAX_QUEUE_LEN)); | |
81 | ||
8a4e3a85 BP |
82 | /* Protects against changes to 'dp_netdevs'. */ |
83 | static struct ovs_mutex dp_netdev_mutex = OVS_MUTEX_INITIALIZER; | |
84 | ||
85 | /* Contains all 'struct dp_netdev's. */ | |
86 | static struct shash dp_netdevs OVS_GUARDED_BY(dp_netdev_mutex) | |
87 | = SHASH_INITIALIZER(&dp_netdevs); | |
88 | ||
d88b629b BP |
89 | struct dp_netdev_upcall { |
90 | struct dpif_upcall upcall; /* Queued upcall information. */ | |
91 | struct ofpbuf buf; /* ofpbuf instance for upcall.packet. */ | |
92 | }; | |
93 | ||
8a4e3a85 BP |
94 | /* A queue passing packets from a struct dp_netdev to its clients. |
95 | * | |
96 | * | |
97 | * Thread-safety | |
98 | * ============= | |
99 | * | |
100 | * Any access at all requires the owning 'dp_netdev''s queue_mutex. */ | |
856081f6 | 101 | struct dp_netdev_queue { |
f5126b57 BP |
102 | struct dp_netdev_upcall upcalls[MAX_QUEUE_LEN] OVS_GUARDED; |
103 | unsigned int head OVS_GUARDED; | |
104 | unsigned int tail OVS_GUARDED; | |
856081f6 BP |
105 | }; |
106 | ||
8a4e3a85 BP |
107 | /* Datapath based on the network device interface from netdev.h. |
108 | * | |
109 | * | |
110 | * Thread-safety | |
111 | * ============= | |
112 | * | |
113 | * Some members, marked 'const', are immutable. Accessing other members | |
114 | * requires synchronization, as noted in more detail below. | |
115 | * | |
116 | * Acquisition order is, from outermost to innermost: | |
117 | * | |
118 | * dp_netdev_mutex (global) | |
119 | * port_rwlock | |
120 | * flow_mutex | |
121 | * cls.rwlock | |
122 | * queue_mutex | |
123 | */ | |
72865317 | 124 | struct dp_netdev { |
8a4e3a85 BP |
125 | const struct dpif_class *const class; |
126 | const char *const name; | |
6a8267c5 BP |
127 | struct ovs_refcount ref_cnt; |
128 | atomic_flag destroyed; | |
72865317 | 129 | |
8a4e3a85 BP |
130 | /* Flows. |
131 | * | |
132 | * Readers of 'cls' and 'flow_table' must take a 'cls->rwlock' read lock. | |
133 | * | |
134 | * Writers of 'cls' and 'flow_table' must take the 'flow_mutex' and then | |
135 | * the 'cls->rwlock' write lock. (The outer 'flow_mutex' allows writers to | |
136 | * atomically perform multiple operations on 'cls' and 'flow_table'.) | |
137 | */ | |
138 | struct ovs_mutex flow_mutex; | |
139 | struct classifier cls; /* Classifier. Protected by cls.rwlock. */ | |
140 | struct hmap flow_table OVS_GUARDED; /* Flow table. */ | |
141 | ||
142 | /* Queues. | |
143 | * | |
144 | * Everything in 'queues' is protected by 'queue_mutex'. */ | |
f5126b57 BP |
145 | struct ovs_mutex queue_mutex; |
146 | struct dp_netdev_queue queues[N_QUEUES]; | |
d33ed218 | 147 | struct seq *queue_seq; /* Incremented whenever a packet is queued. */ |
72865317 | 148 | |
8a4e3a85 BP |
149 | /* Statistics. |
150 | * | |
51852a57 BP |
151 | * ovsthread_stats is internally synchronized. */ |
152 | struct ovsthread_stats stats; /* Contains 'struct dp_netdev_stats *'. */ | |
72865317 | 153 | |
8a4e3a85 BP |
154 | /* Ports. |
155 | * | |
156 | * Any lookup into 'ports' or any access to the dp_netdev_ports found | |
157 | * through 'ports' requires taking 'port_rwlock'. */ | |
158 | struct ovs_rwlock port_rwlock; | |
159 | struct hmap ports OVS_GUARDED; | |
d33ed218 | 160 | struct seq *port_seq; /* Incremented whenever a port changes. */ |
6c3eee82 BP |
161 | |
162 | /* Forwarding threads. */ | |
163 | struct latch exit_latch; | |
164 | struct dp_forwarder *forwarders; | |
165 | size_t n_forwarders; | |
72865317 BP |
166 | }; |
167 | ||
8a4e3a85 BP |
168 | static struct dp_netdev_port *dp_netdev_lookup_port(const struct dp_netdev *dp, |
169 | odp_port_t) | |
170 | OVS_REQ_RDLOCK(dp->port_rwlock); | |
ff073a71 | 171 | |
51852a57 BP |
172 | enum dp_stat_type { |
173 | DP_STAT_HIT, /* Packets that matched in the flow table. */ | |
174 | DP_STAT_MISS, /* Packets that did not match. */ | |
175 | DP_STAT_LOST, /* Packets not passed up to the client. */ | |
176 | DP_N_STATS | |
177 | }; | |
178 | ||
179 | /* Contained by struct dp_netdev's 'stats' member. */ | |
180 | struct dp_netdev_stats { | |
181 | struct ovs_mutex mutex; /* Protects 'n'. */ | |
182 | ||
183 | /* Indexed by DP_STAT_*, protected by 'mutex'. */ | |
184 | unsigned long long int n[DP_N_STATS] OVS_GUARDED; | |
185 | }; | |
186 | ||
187 | ||
72865317 BP |
188 | /* A port in a netdev-based datapath. */ |
189 | struct dp_netdev_port { | |
ff073a71 BP |
190 | struct hmap_node node; /* Node in dp_netdev's 'ports'. */ |
191 | odp_port_t port_no; | |
72865317 | 192 | struct netdev *netdev; |
4b609110 | 193 | struct netdev_saved_flags *sf; |
796223f5 | 194 | struct netdev_rx *rx; |
0cbfe35d | 195 | char *type; /* Port type as requested by user. */ |
72865317 BP |
196 | }; |
197 | ||
8a4e3a85 BP |
198 | /* A flow in dp_netdev's 'flow_table'. |
199 | * | |
200 | * | |
201 | * Thread-safety | |
202 | * ============= | |
203 | * | |
204 | * Except near the beginning or ending of its lifespan, rule 'rule' belongs to | |
205 | * its dp_netdev's classifier. The text below calls this classifier 'cls'. | |
206 | * | |
207 | * Motivation | |
208 | * ---------- | |
209 | * | |
210 | * The thread safety rules described here for "struct dp_netdev_flow" are | |
211 | * motivated by two goals: | |
212 | * | |
213 | * - Prevent threads that read members of "struct dp_netdev_flow" from | |
214 | * reading bad data due to changes by some thread concurrently modifying | |
215 | * those members. | |
216 | * | |
217 | * - Prevent two threads making changes to members of a given "struct | |
218 | * dp_netdev_flow" from interfering with each other. | |
219 | * | |
220 | * | |
221 | * Rules | |
222 | * ----- | |
223 | * | |
224 | * A flow 'flow' may be accessed without a risk of being freed by code that | |
225 | * holds a read-lock or write-lock on 'cls->rwlock' or that owns a reference to | |
226 | * 'flow->ref_cnt' (or both). Code that needs to hold onto a flow for a while | |
227 | * should take 'cls->rwlock', find the flow it needs, increment 'flow->ref_cnt' | |
228 | * with dpif_netdev_flow_ref(), and drop 'cls->rwlock'. | |
229 | * | |
230 | * 'flow->ref_cnt' protects 'flow' from being freed. It doesn't protect the | |
231 | * flow from being deleted from 'cls' (that's 'cls->rwlock') and it doesn't | |
232 | * protect members of 'flow' from modification (that's 'flow->mutex'). | |
233 | * | |
234 | * 'flow->mutex' protects the members of 'flow' from modification. It doesn't | |
235 | * protect the flow from being deleted from 'cls' (that's 'cls->rwlock') and it | |
236 | * doesn't prevent the flow from being freed (that's 'flow->ref_cnt'). | |
237 | * | |
238 | * Some members, marked 'const', are immutable. Accessing other members | |
239 | * requires synchronization, as noted in more detail below. | |
240 | */ | |
72865317 | 241 | struct dp_netdev_flow { |
2c0ea78f | 242 | /* Packet classification. */ |
8a4e3a85 | 243 | const struct cls_rule cr; /* In owning dp_netdev's 'cls'. */ |
2c0ea78f | 244 | |
8a4e3a85 BP |
245 | /* Hash table index by unmasked flow. */ |
246 | const struct hmap_node node; /* In owning dp_netdev's 'flow_table'. */ | |
247 | const struct flow flow; /* The flow that created this entry. */ | |
72865317 | 248 | |
8a4e3a85 BP |
249 | /* Protects members marked OVS_GUARDED. |
250 | * | |
251 | * Acquire after datapath's flow_mutex. */ | |
252 | struct ovs_mutex mutex OVS_ACQ_AFTER(dp_netdev_mutex); | |
253 | ||
254 | /* Statistics. | |
255 | * | |
256 | * Reading or writing these members requires 'mutex'. */ | |
679ba04c | 257 | struct ovsthread_stats stats; /* Contains "struct dp_netdev_flow_stats". */ |
8a4e3a85 BP |
258 | |
259 | /* Actions. | |
260 | * | |
261 | * Reading 'actions' requires 'mutex'. | |
262 | * Writing 'actions' requires 'mutex' and (to allow for transactions) the | |
263 | * datapath's flow_mutex. */ | |
61e7deb1 | 264 | OVSRCU_TYPE(struct dp_netdev_actions *) actions; |
72865317 BP |
265 | }; |
266 | ||
61e7deb1 | 267 | static void dp_netdev_flow_free(struct dp_netdev_flow *); |
8a4e3a85 | 268 | |
679ba04c BP |
269 | /* Contained by struct dp_netdev_flow's 'stats' member. */ |
270 | struct dp_netdev_flow_stats { | |
271 | struct ovs_mutex mutex; /* Guards all the other members. */ | |
272 | ||
273 | long long int used OVS_GUARDED; /* Last used time, in monotonic msecs. */ | |
274 | long long int packet_count OVS_GUARDED; /* Number of packets matched. */ | |
275 | long long int byte_count OVS_GUARDED; /* Number of bytes matched. */ | |
276 | uint16_t tcp_flags OVS_GUARDED; /* Bitwise-OR of seen tcp_flags values. */ | |
277 | }; | |
278 | ||
a84cb64a BP |
279 | /* A set of datapath actions within a "struct dp_netdev_flow". |
280 | * | |
281 | * | |
282 | * Thread-safety | |
283 | * ============= | |
284 | * | |
285 | * A struct dp_netdev_actions 'actions' may be accessed without a risk of being | |
286 | * freed by code that holds a read-lock or write-lock on 'flow->mutex' (where | |
287 | * 'flow' is the dp_netdev_flow for which 'flow->actions == actions') or that | |
288 | * owns a reference to 'actions->ref_cnt' (or both). */ | |
289 | struct dp_netdev_actions { | |
a84cb64a BP |
290 | /* These members are immutable: they do not change during the struct's |
291 | * lifetime. */ | |
292 | struct nlattr *actions; /* Sequence of OVS_ACTION_ATTR_* attributes. */ | |
293 | unsigned int size; /* Size of 'actions', in bytes. */ | |
294 | }; | |
295 | ||
296 | struct dp_netdev_actions *dp_netdev_actions_create(const struct nlattr *, | |
297 | size_t); | |
61e7deb1 BP |
298 | struct dp_netdev_actions *dp_netdev_flow_get_actions( |
299 | const struct dp_netdev_flow *); | |
300 | static void dp_netdev_actions_free(struct dp_netdev_actions *); | |
a84cb64a | 301 | |
6c3eee82 BP |
302 | /* A thread that receives packets from some ports, looks them up in the flow |
303 | * table, and executes the actions it finds. */ | |
304 | struct dp_forwarder { | |
305 | struct dp_netdev *dp; | |
306 | pthread_t thread; | |
307 | char *name; | |
308 | uint32_t min_hash, max_hash; | |
309 | }; | |
310 | ||
72865317 BP |
311 | /* Interface to netdev-based datapath. */ |
312 | struct dpif_netdev { | |
313 | struct dpif dpif; | |
314 | struct dp_netdev *dp; | |
d33ed218 | 315 | uint64_t last_port_seq; |
72865317 BP |
316 | }; |
317 | ||
8a4e3a85 BP |
318 | static int get_port_by_number(struct dp_netdev *dp, odp_port_t port_no, |
319 | struct dp_netdev_port **portp) | |
320 | OVS_REQ_RDLOCK(dp->port_rwlock); | |
321 | static int get_port_by_name(struct dp_netdev *dp, const char *devname, | |
322 | struct dp_netdev_port **portp) | |
323 | OVS_REQ_RDLOCK(dp->port_rwlock); | |
324 | static void dp_netdev_free(struct dp_netdev *) | |
325 | OVS_REQUIRES(dp_netdev_mutex); | |
72865317 | 326 | static void dp_netdev_flow_flush(struct dp_netdev *); |
8a4e3a85 BP |
327 | static int do_add_port(struct dp_netdev *dp, const char *devname, |
328 | const char *type, odp_port_t port_no) | |
329 | OVS_REQ_WRLOCK(dp->port_rwlock); | |
330 | static int do_del_port(struct dp_netdev *dp, odp_port_t port_no) | |
331 | OVS_REQ_WRLOCK(dp->port_rwlock); | |
614c4892 BP |
332 | static int dpif_netdev_open(const struct dpif_class *, const char *name, |
333 | bool create, struct dpif **); | |
f5126b57 | 334 | static int dp_netdev_output_userspace(struct dp_netdev *dp, struct ofpbuf *, |
856081f6 | 335 | int queue_no, const struct flow *, |
f5126b57 BP |
336 | const struct nlattr *userdata) |
337 | OVS_EXCLUDED(dp->queue_mutex); | |
8a4e3a85 BP |
338 | static void dp_netdev_execute_actions(struct dp_netdev *dp, |
339 | const struct flow *, struct ofpbuf *, | |
340 | struct pkt_metadata *, | |
4edb9ae9 | 341 | const struct nlattr *actions, |
8a4e3a85 BP |
342 | size_t actions_len) |
343 | OVS_REQ_RDLOCK(dp->port_rwlock); | |
758c456d | 344 | static void dp_netdev_port_input(struct dp_netdev *dp, struct ofpbuf *packet, |
8a4e3a85 BP |
345 | struct pkt_metadata *) |
346 | OVS_REQ_RDLOCK(dp->port_rwlock); | |
6c3eee82 | 347 | static void dp_netdev_set_threads(struct dp_netdev *, int n); |
72865317 BP |
348 | |
349 | static struct dpif_netdev * | |
350 | dpif_netdev_cast(const struct dpif *dpif) | |
351 | { | |
cb22974d | 352 | ovs_assert(dpif->dpif_class->open == dpif_netdev_open); |
72865317 BP |
353 | return CONTAINER_OF(dpif, struct dpif_netdev, dpif); |
354 | } | |
355 | ||
356 | static struct dp_netdev * | |
357 | get_dp_netdev(const struct dpif *dpif) | |
358 | { | |
359 | return dpif_netdev_cast(dpif)->dp; | |
360 | } | |
361 | ||
2197d7ab GL |
362 | static int |
363 | dpif_netdev_enumerate(struct sset *all_dps) | |
364 | { | |
365 | struct shash_node *node; | |
366 | ||
97be1538 | 367 | ovs_mutex_lock(&dp_netdev_mutex); |
2197d7ab GL |
368 | SHASH_FOR_EACH(node, &dp_netdevs) { |
369 | sset_add(all_dps, node->name); | |
370 | } | |
97be1538 | 371 | ovs_mutex_unlock(&dp_netdev_mutex); |
5279f8fd | 372 | |
2197d7ab GL |
373 | return 0; |
374 | } | |
375 | ||
add90f6f EJ |
376 | static bool |
377 | dpif_netdev_class_is_dummy(const struct dpif_class *class) | |
378 | { | |
379 | return class != &dpif_netdev_class; | |
380 | } | |
381 | ||
0aeaabc8 JP |
382 | static const char * |
383 | dpif_netdev_port_open_type(const struct dpif_class *class, const char *type) | |
384 | { | |
385 | return strcmp(type, "internal") ? type | |
add90f6f | 386 | : dpif_netdev_class_is_dummy(class) ? "dummy" |
0aeaabc8 JP |
387 | : "tap"; |
388 | } | |
389 | ||
72865317 BP |
390 | static struct dpif * |
391 | create_dpif_netdev(struct dp_netdev *dp) | |
392 | { | |
462278db | 393 | uint16_t netflow_id = hash_string(dp->name, 0); |
72865317 | 394 | struct dpif_netdev *dpif; |
72865317 | 395 | |
6a8267c5 | 396 | ovs_refcount_ref(&dp->ref_cnt); |
72865317 | 397 | |
72865317 | 398 | dpif = xmalloc(sizeof *dpif); |
614c4892 | 399 | dpif_init(&dpif->dpif, dp->class, dp->name, netflow_id >> 8, netflow_id); |
72865317 | 400 | dpif->dp = dp; |
d33ed218 | 401 | dpif->last_port_seq = seq_read(dp->port_seq); |
72865317 BP |
402 | |
403 | return &dpif->dpif; | |
404 | } | |
405 | ||
4e022ec0 AW |
406 | /* Choose an unused, non-zero port number and return it on success. |
407 | * Return ODPP_NONE on failure. */ | |
408 | static odp_port_t | |
e44768b7 | 409 | choose_port(struct dp_netdev *dp, const char *name) |
8a4e3a85 | 410 | OVS_REQ_RDLOCK(dp->port_rwlock) |
e44768b7 | 411 | { |
4e022ec0 | 412 | uint32_t port_no; |
e44768b7 JP |
413 | |
414 | if (dp->class != &dpif_netdev_class) { | |
415 | const char *p; | |
416 | int start_no = 0; | |
417 | ||
418 | /* If the port name begins with "br", start the number search at | |
419 | * 100 to make writing tests easier. */ | |
420 | if (!strncmp(name, "br", 2)) { | |
421 | start_no = 100; | |
422 | } | |
423 | ||
424 | /* If the port name contains a number, try to assign that port number. | |
425 | * This can make writing unit tests easier because port numbers are | |
426 | * predictable. */ | |
427 | for (p = name; *p != '\0'; p++) { | |
428 | if (isdigit((unsigned char) *p)) { | |
429 | port_no = start_no + strtol(p, NULL, 10); | |
ff073a71 BP |
430 | if (port_no > 0 && port_no != odp_to_u32(ODPP_NONE) |
431 | && !dp_netdev_lookup_port(dp, u32_to_odp(port_no))) { | |
4e022ec0 | 432 | return u32_to_odp(port_no); |
e44768b7 JP |
433 | } |
434 | break; | |
435 | } | |
436 | } | |
437 | } | |
438 | ||
ff073a71 BP |
439 | for (port_no = 1; port_no <= UINT16_MAX; port_no++) { |
440 | if (!dp_netdev_lookup_port(dp, u32_to_odp(port_no))) { | |
4e022ec0 | 441 | return u32_to_odp(port_no); |
e44768b7 JP |
442 | } |
443 | } | |
444 | ||
4e022ec0 | 445 | return ODPP_NONE; |
e44768b7 JP |
446 | } |
447 | ||
72865317 | 448 | static int |
614c4892 BP |
449 | create_dp_netdev(const char *name, const struct dpif_class *class, |
450 | struct dp_netdev **dpp) | |
8a4e3a85 | 451 | OVS_REQUIRES(dp_netdev_mutex) |
72865317 BP |
452 | { |
453 | struct dp_netdev *dp; | |
454 | int error; | |
455 | int i; | |
456 | ||
462278db | 457 | dp = xzalloc(sizeof *dp); |
8a4e3a85 BP |
458 | shash_add(&dp_netdevs, name, dp); |
459 | ||
460 | *CONST_CAST(const struct dpif_class **, &dp->class) = class; | |
461 | *CONST_CAST(const char **, &dp->name) = xstrdup(name); | |
6a8267c5 | 462 | ovs_refcount_init(&dp->ref_cnt); |
1a65ba85 | 463 | atomic_flag_clear(&dp->destroyed); |
8a4e3a85 BP |
464 | |
465 | ovs_mutex_init(&dp->flow_mutex); | |
466 | classifier_init(&dp->cls, NULL); | |
467 | hmap_init(&dp->flow_table); | |
468 | ||
f5126b57 BP |
469 | ovs_mutex_init(&dp->queue_mutex); |
470 | ovs_mutex_lock(&dp->queue_mutex); | |
72865317 | 471 | for (i = 0; i < N_QUEUES; i++) { |
856081f6 | 472 | dp->queues[i].head = dp->queues[i].tail = 0; |
72865317 | 473 | } |
f5126b57 | 474 | ovs_mutex_unlock(&dp->queue_mutex); |
d33ed218 | 475 | dp->queue_seq = seq_create(); |
ed27e010 | 476 | |
51852a57 | 477 | ovsthread_stats_init(&dp->stats); |
ed27e010 | 478 | |
8a4e3a85 | 479 | ovs_rwlock_init(&dp->port_rwlock); |
ff073a71 | 480 | hmap_init(&dp->ports); |
d33ed218 | 481 | dp->port_seq = seq_create(); |
6c3eee82 | 482 | latch_init(&dp->exit_latch); |
e44768b7 | 483 | |
8a4e3a85 | 484 | ovs_rwlock_wrlock(&dp->port_rwlock); |
4e022ec0 | 485 | error = do_add_port(dp, name, "internal", ODPP_LOCAL); |
8a4e3a85 | 486 | ovs_rwlock_unlock(&dp->port_rwlock); |
72865317 BP |
487 | if (error) { |
488 | dp_netdev_free(dp); | |
462278db | 489 | return error; |
72865317 | 490 | } |
6c3eee82 | 491 | dp_netdev_set_threads(dp, 2); |
72865317 | 492 | |
462278db | 493 | *dpp = dp; |
72865317 BP |
494 | return 0; |
495 | } | |
496 | ||
497 | static int | |
614c4892 | 498 | dpif_netdev_open(const struct dpif_class *class, const char *name, |
4a387741 | 499 | bool create, struct dpif **dpifp) |
72865317 | 500 | { |
462278db | 501 | struct dp_netdev *dp; |
5279f8fd | 502 | int error; |
462278db | 503 | |
97be1538 | 504 | ovs_mutex_lock(&dp_netdev_mutex); |
462278db BP |
505 | dp = shash_find_data(&dp_netdevs, name); |
506 | if (!dp) { | |
5279f8fd | 507 | error = create ? create_dp_netdev(name, class, &dp) : ENODEV; |
72865317 | 508 | } else { |
5279f8fd BP |
509 | error = (dp->class != class ? EINVAL |
510 | : create ? EEXIST | |
511 | : 0); | |
512 | } | |
513 | if (!error) { | |
514 | *dpifp = create_dpif_netdev(dp); | |
72865317 | 515 | } |
97be1538 | 516 | ovs_mutex_unlock(&dp_netdev_mutex); |
462278db | 517 | |
5279f8fd | 518 | return error; |
72865317 BP |
519 | } |
520 | ||
521 | static void | |
1ba530f4 | 522 | dp_netdev_purge_queues(struct dp_netdev *dp) |
72865317 BP |
523 | { |
524 | int i; | |
525 | ||
f5126b57 | 526 | ovs_mutex_lock(&dp->queue_mutex); |
72865317 | 527 | for (i = 0; i < N_QUEUES; i++) { |
856081f6 | 528 | struct dp_netdev_queue *q = &dp->queues[i]; |
856081f6 | 529 | |
1ba530f4 | 530 | while (q->tail != q->head) { |
d88b629b | 531 | struct dp_netdev_upcall *u = &q->upcalls[q->tail++ & QUEUE_MASK]; |
da546e07 | 532 | ofpbuf_uninit(&u->upcall.packet); |
d88b629b | 533 | ofpbuf_uninit(&u->buf); |
856081f6 | 534 | } |
72865317 | 535 | } |
f5126b57 | 536 | ovs_mutex_unlock(&dp->queue_mutex); |
1ba530f4 BP |
537 | } |
538 | ||
8a4e3a85 BP |
539 | /* Requires dp_netdev_mutex so that we can't get a new reference to 'dp' |
540 | * through the 'dp_netdevs' shash while freeing 'dp'. */ | |
1ba530f4 BP |
541 | static void |
542 | dp_netdev_free(struct dp_netdev *dp) | |
8a4e3a85 | 543 | OVS_REQUIRES(dp_netdev_mutex) |
1ba530f4 | 544 | { |
4ad28026 | 545 | struct dp_netdev_port *port, *next; |
51852a57 BP |
546 | struct dp_netdev_stats *bucket; |
547 | int i; | |
4ad28026 | 548 | |
8a4e3a85 BP |
549 | shash_find_and_delete(&dp_netdevs, dp->name); |
550 | ||
6c3eee82 BP |
551 | dp_netdev_set_threads(dp, 0); |
552 | free(dp->forwarders); | |
553 | ||
1ba530f4 | 554 | dp_netdev_flow_flush(dp); |
8a4e3a85 | 555 | ovs_rwlock_wrlock(&dp->port_rwlock); |
ff073a71 | 556 | HMAP_FOR_EACH_SAFE (port, next, node, &dp->ports) { |
1ba530f4 BP |
557 | do_del_port(dp, port->port_no); |
558 | } | |
8a4e3a85 | 559 | ovs_rwlock_unlock(&dp->port_rwlock); |
51852a57 BP |
560 | |
561 | OVSTHREAD_STATS_FOR_EACH_BUCKET (bucket, i, &dp->stats) { | |
562 | ovs_mutex_destroy(&bucket->mutex); | |
563 | free_cacheline(bucket); | |
564 | } | |
565 | ovsthread_stats_destroy(&dp->stats); | |
f5126b57 | 566 | |
1ba530f4 | 567 | dp_netdev_purge_queues(dp); |
d33ed218 | 568 | seq_destroy(dp->queue_seq); |
f5126b57 BP |
569 | ovs_mutex_destroy(&dp->queue_mutex); |
570 | ||
2c0ea78f | 571 | classifier_destroy(&dp->cls); |
72865317 | 572 | hmap_destroy(&dp->flow_table); |
8a4e3a85 | 573 | ovs_mutex_destroy(&dp->flow_mutex); |
d33ed218 | 574 | seq_destroy(dp->port_seq); |
ff073a71 | 575 | hmap_destroy(&dp->ports); |
6c3eee82 | 576 | latch_destroy(&dp->exit_latch); |
8a4e3a85 | 577 | free(CONST_CAST(char *, dp->name)); |
72865317 BP |
578 | free(dp); |
579 | } | |
580 | ||
8a4e3a85 BP |
581 | static void |
582 | dp_netdev_unref(struct dp_netdev *dp) | |
583 | { | |
584 | if (dp) { | |
585 | /* Take dp_netdev_mutex so that, if dp->ref_cnt falls to zero, we can't | |
586 | * get a new reference to 'dp' through the 'dp_netdevs' shash. */ | |
587 | ovs_mutex_lock(&dp_netdev_mutex); | |
588 | if (ovs_refcount_unref(&dp->ref_cnt) == 1) { | |
589 | dp_netdev_free(dp); | |
590 | } | |
591 | ovs_mutex_unlock(&dp_netdev_mutex); | |
592 | } | |
593 | } | |
594 | ||
72865317 BP |
595 | static void |
596 | dpif_netdev_close(struct dpif *dpif) | |
597 | { | |
598 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
5279f8fd | 599 | |
8a4e3a85 | 600 | dp_netdev_unref(dp); |
72865317 BP |
601 | free(dpif); |
602 | } | |
603 | ||
604 | static int | |
7dab847a | 605 | dpif_netdev_destroy(struct dpif *dpif) |
72865317 BP |
606 | { |
607 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
5279f8fd | 608 | |
6a8267c5 BP |
609 | if (!atomic_flag_test_and_set(&dp->destroyed)) { |
610 | if (ovs_refcount_unref(&dp->ref_cnt) == 1) { | |
611 | /* Can't happen: 'dpif' still owns a reference to 'dp'. */ | |
612 | OVS_NOT_REACHED(); | |
613 | } | |
614 | } | |
5279f8fd | 615 | |
72865317 BP |
616 | return 0; |
617 | } | |
618 | ||
619 | static int | |
a8d9304d | 620 | dpif_netdev_get_stats(const struct dpif *dpif, struct dpif_dp_stats *stats) |
72865317 BP |
621 | { |
622 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
51852a57 BP |
623 | struct dp_netdev_stats *bucket; |
624 | size_t i; | |
5279f8fd | 625 | |
06f81620 | 626 | fat_rwlock_rdlock(&dp->cls.rwlock); |
f180c2e2 | 627 | stats->n_flows = hmap_count(&dp->flow_table); |
06f81620 | 628 | fat_rwlock_unlock(&dp->cls.rwlock); |
8a4e3a85 | 629 | |
51852a57 BP |
630 | stats->n_hit = stats->n_missed = stats->n_lost = 0; |
631 | OVSTHREAD_STATS_FOR_EACH_BUCKET (bucket, i, &dp->stats) { | |
632 | ovs_mutex_lock(&bucket->mutex); | |
633 | stats->n_hit += bucket->n[DP_STAT_HIT]; | |
634 | stats->n_missed += bucket->n[DP_STAT_MISS]; | |
635 | stats->n_lost += bucket->n[DP_STAT_LOST]; | |
636 | ovs_mutex_unlock(&bucket->mutex); | |
637 | } | |
1ce3fa06 | 638 | stats->n_masks = UINT32_MAX; |
847108dc | 639 | stats->n_mask_hit = UINT64_MAX; |
5279f8fd | 640 | |
72865317 BP |
641 | return 0; |
642 | } | |
643 | ||
72865317 | 644 | static int |
c3827f61 | 645 | do_add_port(struct dp_netdev *dp, const char *devname, const char *type, |
4e022ec0 | 646 | odp_port_t port_no) |
8a4e3a85 | 647 | OVS_REQ_WRLOCK(dp->port_rwlock) |
72865317 | 648 | { |
4b609110 | 649 | struct netdev_saved_flags *sf; |
72865317 BP |
650 | struct dp_netdev_port *port; |
651 | struct netdev *netdev; | |
796223f5 | 652 | struct netdev_rx *rx; |
2499a8ce | 653 | enum netdev_flags flags; |
0cbfe35d | 654 | const char *open_type; |
72865317 BP |
655 | int error; |
656 | ||
657 | /* XXX reject devices already in some dp_netdev. */ | |
658 | ||
659 | /* Open and validate network device. */ | |
0aeaabc8 | 660 | open_type = dpif_netdev_port_open_type(dp->class, type); |
0cbfe35d | 661 | error = netdev_open(devname, open_type, &netdev); |
72865317 BP |
662 | if (error) { |
663 | return error; | |
664 | } | |
72865317 BP |
665 | /* XXX reject non-Ethernet devices */ |
666 | ||
2499a8ce AC |
667 | netdev_get_flags(netdev, &flags); |
668 | if (flags & NETDEV_LOOPBACK) { | |
669 | VLOG_ERR("%s: cannot add a loopback device", devname); | |
670 | netdev_close(netdev); | |
671 | return EINVAL; | |
672 | } | |
673 | ||
796223f5 | 674 | error = netdev_rx_open(netdev, &rx); |
add90f6f EJ |
675 | if (error |
676 | && !(error == EOPNOTSUPP && dpif_netdev_class_is_dummy(dp->class))) { | |
7b6b0ef4 | 677 | VLOG_ERR("%s: cannot receive packets on this network device (%s)", |
10a89ef0 | 678 | devname, ovs_strerror(errno)); |
7b6b0ef4 BP |
679 | netdev_close(netdev); |
680 | return error; | |
681 | } | |
682 | ||
4b609110 | 683 | error = netdev_turn_flags_on(netdev, NETDEV_PROMISC, &sf); |
72865317 | 684 | if (error) { |
796223f5 | 685 | netdev_rx_close(rx); |
72865317 BP |
686 | netdev_close(netdev); |
687 | return error; | |
688 | } | |
689 | ||
690 | port = xmalloc(sizeof *port); | |
691 | port->port_no = port_no; | |
692 | port->netdev = netdev; | |
4b609110 | 693 | port->sf = sf; |
796223f5 | 694 | port->rx = rx; |
0cbfe35d | 695 | port->type = xstrdup(type); |
72865317 | 696 | |
ff073a71 | 697 | hmap_insert(&dp->ports, &port->node, hash_int(odp_to_u32(port_no), 0)); |
d33ed218 | 698 | seq_change(dp->port_seq); |
72865317 BP |
699 | |
700 | return 0; | |
701 | } | |
702 | ||
247527db BP |
703 | static int |
704 | dpif_netdev_port_add(struct dpif *dpif, struct netdev *netdev, | |
4e022ec0 | 705 | odp_port_t *port_nop) |
247527db BP |
706 | { |
707 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
3aa30359 BP |
708 | char namebuf[NETDEV_VPORT_NAME_BUFSIZE]; |
709 | const char *dpif_port; | |
4e022ec0 | 710 | odp_port_t port_no; |
5279f8fd | 711 | int error; |
247527db | 712 | |
8a4e3a85 | 713 | ovs_rwlock_wrlock(&dp->port_rwlock); |
3aa30359 | 714 | dpif_port = netdev_vport_get_dpif_port(netdev, namebuf, sizeof namebuf); |
4e022ec0 | 715 | if (*port_nop != ODPP_NONE) { |
ff073a71 BP |
716 | port_no = *port_nop; |
717 | error = dp_netdev_lookup_port(dp, *port_nop) ? EBUSY : 0; | |
232dfa4a | 718 | } else { |
3aa30359 | 719 | port_no = choose_port(dp, dpif_port); |
5279f8fd | 720 | error = port_no == ODPP_NONE ? EFBIG : 0; |
232dfa4a | 721 | } |
5279f8fd | 722 | if (!error) { |
247527db | 723 | *port_nop = port_no; |
5279f8fd | 724 | error = do_add_port(dp, dpif_port, netdev_get_type(netdev), port_no); |
247527db | 725 | } |
8a4e3a85 | 726 | ovs_rwlock_unlock(&dp->port_rwlock); |
5279f8fd BP |
727 | |
728 | return error; | |
72865317 BP |
729 | } |
730 | ||
731 | static int | |
4e022ec0 | 732 | dpif_netdev_port_del(struct dpif *dpif, odp_port_t port_no) |
72865317 BP |
733 | { |
734 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
5279f8fd BP |
735 | int error; |
736 | ||
8a4e3a85 | 737 | ovs_rwlock_wrlock(&dp->port_rwlock); |
5279f8fd | 738 | error = port_no == ODPP_LOCAL ? EINVAL : do_del_port(dp, port_no); |
8a4e3a85 | 739 | ovs_rwlock_unlock(&dp->port_rwlock); |
5279f8fd BP |
740 | |
741 | return error; | |
72865317 BP |
742 | } |
743 | ||
744 | static bool | |
4e022ec0 | 745 | is_valid_port_number(odp_port_t port_no) |
72865317 | 746 | { |
ff073a71 BP |
747 | return port_no != ODPP_NONE; |
748 | } | |
749 | ||
750 | static struct dp_netdev_port * | |
751 | dp_netdev_lookup_port(const struct dp_netdev *dp, odp_port_t port_no) | |
8a4e3a85 | 752 | OVS_REQ_RDLOCK(dp->port_rwlock) |
ff073a71 BP |
753 | { |
754 | struct dp_netdev_port *port; | |
755 | ||
756 | HMAP_FOR_EACH_IN_BUCKET (port, node, hash_int(odp_to_u32(port_no), 0), | |
757 | &dp->ports) { | |
758 | if (port->port_no == port_no) { | |
759 | return port; | |
760 | } | |
761 | } | |
762 | return NULL; | |
72865317 BP |
763 | } |
764 | ||
765 | static int | |
766 | get_port_by_number(struct dp_netdev *dp, | |
4e022ec0 | 767 | odp_port_t port_no, struct dp_netdev_port **portp) |
8a4e3a85 | 768 | OVS_REQ_RDLOCK(dp->port_rwlock) |
72865317 BP |
769 | { |
770 | if (!is_valid_port_number(port_no)) { | |
771 | *portp = NULL; | |
772 | return EINVAL; | |
773 | } else { | |
ff073a71 | 774 | *portp = dp_netdev_lookup_port(dp, port_no); |
72865317 BP |
775 | return *portp ? 0 : ENOENT; |
776 | } | |
777 | } | |
778 | ||
779 | static int | |
780 | get_port_by_name(struct dp_netdev *dp, | |
781 | const char *devname, struct dp_netdev_port **portp) | |
8a4e3a85 | 782 | OVS_REQ_RDLOCK(dp->port_rwlock) |
72865317 BP |
783 | { |
784 | struct dp_netdev_port *port; | |
785 | ||
ff073a71 | 786 | HMAP_FOR_EACH (port, node, &dp->ports) { |
3efb6063 | 787 | if (!strcmp(netdev_get_name(port->netdev), devname)) { |
72865317 BP |
788 | *portp = port; |
789 | return 0; | |
790 | } | |
791 | } | |
792 | return ENOENT; | |
793 | } | |
794 | ||
795 | static int | |
4e022ec0 | 796 | do_del_port(struct dp_netdev *dp, odp_port_t port_no) |
8a4e3a85 | 797 | OVS_REQ_WRLOCK(dp->port_rwlock) |
72865317 BP |
798 | { |
799 | struct dp_netdev_port *port; | |
800 | int error; | |
801 | ||
802 | error = get_port_by_number(dp, port_no, &port); | |
803 | if (error) { | |
804 | return error; | |
805 | } | |
806 | ||
ff073a71 | 807 | hmap_remove(&dp->ports, &port->node); |
d33ed218 | 808 | seq_change(dp->port_seq); |
72865317 BP |
809 | |
810 | netdev_close(port->netdev); | |
4b609110 | 811 | netdev_restore_flags(port->sf); |
796223f5 | 812 | netdev_rx_close(port->rx); |
0cbfe35d | 813 | free(port->type); |
72865317 BP |
814 | free(port); |
815 | ||
816 | return 0; | |
817 | } | |
818 | ||
819 | static void | |
4c738a8d BP |
820 | answer_port_query(const struct dp_netdev_port *port, |
821 | struct dpif_port *dpif_port) | |
72865317 | 822 | { |
3efb6063 | 823 | dpif_port->name = xstrdup(netdev_get_name(port->netdev)); |
0cbfe35d | 824 | dpif_port->type = xstrdup(port->type); |
4c738a8d | 825 | dpif_port->port_no = port->port_no; |
72865317 BP |
826 | } |
827 | ||
828 | static int | |
4e022ec0 | 829 | dpif_netdev_port_query_by_number(const struct dpif *dpif, odp_port_t port_no, |
4c738a8d | 830 | struct dpif_port *dpif_port) |
72865317 BP |
831 | { |
832 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
833 | struct dp_netdev_port *port; | |
834 | int error; | |
835 | ||
8a4e3a85 | 836 | ovs_rwlock_rdlock(&dp->port_rwlock); |
72865317 | 837 | error = get_port_by_number(dp, port_no, &port); |
4afba28d | 838 | if (!error && dpif_port) { |
4c738a8d | 839 | answer_port_query(port, dpif_port); |
72865317 | 840 | } |
8a4e3a85 | 841 | ovs_rwlock_unlock(&dp->port_rwlock); |
5279f8fd | 842 | |
72865317 BP |
843 | return error; |
844 | } | |
845 | ||
846 | static int | |
847 | dpif_netdev_port_query_by_name(const struct dpif *dpif, const char *devname, | |
4c738a8d | 848 | struct dpif_port *dpif_port) |
72865317 BP |
849 | { |
850 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
851 | struct dp_netdev_port *port; | |
852 | int error; | |
853 | ||
8a4e3a85 | 854 | ovs_rwlock_rdlock(&dp->port_rwlock); |
72865317 | 855 | error = get_port_by_name(dp, devname, &port); |
4afba28d | 856 | if (!error && dpif_port) { |
4c738a8d | 857 | answer_port_query(port, dpif_port); |
72865317 | 858 | } |
8a4e3a85 | 859 | ovs_rwlock_unlock(&dp->port_rwlock); |
5279f8fd | 860 | |
72865317 BP |
861 | return error; |
862 | } | |
863 | ||
61e7deb1 BP |
864 | static void |
865 | dp_netdev_flow_free(struct dp_netdev_flow *flow) | |
866 | { | |
867 | struct dp_netdev_flow_stats *bucket; | |
868 | size_t i; | |
869 | ||
870 | OVSTHREAD_STATS_FOR_EACH_BUCKET (bucket, i, &flow->stats) { | |
871 | ovs_mutex_destroy(&bucket->mutex); | |
872 | free_cacheline(bucket); | |
873 | } | |
874 | ovsthread_stats_destroy(&flow->stats); | |
875 | ||
876 | cls_rule_destroy(CONST_CAST(struct cls_rule *, &flow->cr)); | |
877 | dp_netdev_actions_free(dp_netdev_flow_get_actions(flow)); | |
878 | ovs_mutex_destroy(&flow->mutex); | |
879 | free(flow); | |
880 | } | |
881 | ||
72865317 | 882 | static void |
8a4e3a85 BP |
883 | dp_netdev_remove_flow(struct dp_netdev *dp, struct dp_netdev_flow *flow) |
884 | OVS_REQ_WRLOCK(dp->cls.rwlock) | |
885 | OVS_REQUIRES(dp->flow_mutex) | |
72865317 | 886 | { |
8a4e3a85 BP |
887 | struct cls_rule *cr = CONST_CAST(struct cls_rule *, &flow->cr); |
888 | struct hmap_node *node = CONST_CAST(struct hmap_node *, &flow->node); | |
2c0ea78f | 889 | |
8a4e3a85 BP |
890 | classifier_remove(&dp->cls, cr); |
891 | hmap_remove(&dp->flow_table, node); | |
61e7deb1 | 892 | ovsrcu_postpone(dp_netdev_flow_free, flow); |
72865317 BP |
893 | } |
894 | ||
895 | static void | |
896 | dp_netdev_flow_flush(struct dp_netdev *dp) | |
897 | { | |
1763b4b8 | 898 | struct dp_netdev_flow *netdev_flow, *next; |
72865317 | 899 | |
8a4e3a85 | 900 | ovs_mutex_lock(&dp->flow_mutex); |
06f81620 | 901 | fat_rwlock_wrlock(&dp->cls.rwlock); |
1763b4b8 | 902 | HMAP_FOR_EACH_SAFE (netdev_flow, next, node, &dp->flow_table) { |
8a4e3a85 | 903 | dp_netdev_remove_flow(dp, netdev_flow); |
72865317 | 904 | } |
06f81620 | 905 | fat_rwlock_unlock(&dp->cls.rwlock); |
8a4e3a85 | 906 | ovs_mutex_unlock(&dp->flow_mutex); |
72865317 BP |
907 | } |
908 | ||
909 | static int | |
910 | dpif_netdev_flow_flush(struct dpif *dpif) | |
911 | { | |
912 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
5279f8fd | 913 | |
72865317 BP |
914 | dp_netdev_flow_flush(dp); |
915 | return 0; | |
916 | } | |
917 | ||
b0ec0f27 | 918 | struct dp_netdev_port_state { |
ff073a71 BP |
919 | uint32_t bucket; |
920 | uint32_t offset; | |
4c738a8d | 921 | char *name; |
b0ec0f27 BP |
922 | }; |
923 | ||
924 | static int | |
925 | dpif_netdev_port_dump_start(const struct dpif *dpif OVS_UNUSED, void **statep) | |
926 | { | |
927 | *statep = xzalloc(sizeof(struct dp_netdev_port_state)); | |
928 | return 0; | |
929 | } | |
930 | ||
72865317 | 931 | static int |
b0ec0f27 | 932 | dpif_netdev_port_dump_next(const struct dpif *dpif, void *state_, |
4c738a8d | 933 | struct dpif_port *dpif_port) |
72865317 | 934 | { |
b0ec0f27 | 935 | struct dp_netdev_port_state *state = state_; |
72865317 | 936 | struct dp_netdev *dp = get_dp_netdev(dpif); |
ff073a71 BP |
937 | struct hmap_node *node; |
938 | int retval; | |
72865317 | 939 | |
8a4e3a85 | 940 | ovs_rwlock_rdlock(&dp->port_rwlock); |
ff073a71 BP |
941 | node = hmap_at_position(&dp->ports, &state->bucket, &state->offset); |
942 | if (node) { | |
943 | struct dp_netdev_port *port; | |
5279f8fd | 944 | |
ff073a71 BP |
945 | port = CONTAINER_OF(node, struct dp_netdev_port, node); |
946 | ||
947 | free(state->name); | |
948 | state->name = xstrdup(netdev_get_name(port->netdev)); | |
949 | dpif_port->name = state->name; | |
950 | dpif_port->type = port->type; | |
951 | dpif_port->port_no = port->port_no; | |
952 | ||
953 | retval = 0; | |
954 | } else { | |
955 | retval = EOF; | |
72865317 | 956 | } |
8a4e3a85 | 957 | ovs_rwlock_unlock(&dp->port_rwlock); |
5279f8fd | 958 | |
ff073a71 | 959 | return retval; |
b0ec0f27 BP |
960 | } |
961 | ||
962 | static int | |
4c738a8d | 963 | dpif_netdev_port_dump_done(const struct dpif *dpif OVS_UNUSED, void *state_) |
b0ec0f27 | 964 | { |
4c738a8d BP |
965 | struct dp_netdev_port_state *state = state_; |
966 | free(state->name); | |
b0ec0f27 BP |
967 | free(state); |
968 | return 0; | |
72865317 BP |
969 | } |
970 | ||
971 | static int | |
67a4917b | 972 | dpif_netdev_port_poll(const struct dpif *dpif_, char **devnamep OVS_UNUSED) |
72865317 BP |
973 | { |
974 | struct dpif_netdev *dpif = dpif_netdev_cast(dpif_); | |
d33ed218 | 975 | uint64_t new_port_seq; |
5279f8fd BP |
976 | int error; |
977 | ||
d33ed218 BP |
978 | new_port_seq = seq_read(dpif->dp->port_seq); |
979 | if (dpif->last_port_seq != new_port_seq) { | |
980 | dpif->last_port_seq = new_port_seq; | |
5279f8fd | 981 | error = ENOBUFS; |
72865317 | 982 | } else { |
5279f8fd | 983 | error = EAGAIN; |
72865317 | 984 | } |
5279f8fd BP |
985 | |
986 | return error; | |
72865317 BP |
987 | } |
988 | ||
989 | static void | |
990 | dpif_netdev_port_poll_wait(const struct dpif *dpif_) | |
991 | { | |
992 | struct dpif_netdev *dpif = dpif_netdev_cast(dpif_); | |
5279f8fd | 993 | |
d33ed218 | 994 | seq_wait(dpif->dp->port_seq, dpif->last_port_seq); |
8a4e3a85 BP |
995 | } |
996 | ||
997 | static struct dp_netdev_flow * | |
998 | dp_netdev_flow_cast(const struct cls_rule *cr) | |
999 | { | |
1000 | return cr ? CONTAINER_OF(cr, struct dp_netdev_flow, cr) : NULL; | |
72865317 BP |
1001 | } |
1002 | ||
72865317 | 1003 | static struct dp_netdev_flow * |
2c0ea78f | 1004 | dp_netdev_lookup_flow(const struct dp_netdev *dp, const struct flow *flow) |
8a4e3a85 | 1005 | OVS_EXCLUDED(dp->cls.rwlock) |
2c0ea78f | 1006 | { |
8a4e3a85 | 1007 | struct dp_netdev_flow *netdev_flow; |
2c0ea78f | 1008 | |
06f81620 | 1009 | fat_rwlock_rdlock(&dp->cls.rwlock); |
8a4e3a85 | 1010 | netdev_flow = dp_netdev_flow_cast(classifier_lookup(&dp->cls, flow, NULL)); |
06f81620 | 1011 | fat_rwlock_unlock(&dp->cls.rwlock); |
2c0ea78f | 1012 | |
8a4e3a85 | 1013 | return netdev_flow; |
2c0ea78f GS |
1014 | } |
1015 | ||
1016 | static struct dp_netdev_flow * | |
1017 | dp_netdev_find_flow(const struct dp_netdev *dp, const struct flow *flow) | |
8a4e3a85 | 1018 | OVS_REQ_RDLOCK(dp->cls.rwlock) |
72865317 | 1019 | { |
1763b4b8 | 1020 | struct dp_netdev_flow *netdev_flow; |
72865317 | 1021 | |
2c0ea78f | 1022 | HMAP_FOR_EACH_WITH_HASH (netdev_flow, node, flow_hash(flow, 0), |
1763b4b8 | 1023 | &dp->flow_table) { |
2c0ea78f | 1024 | if (flow_equal(&netdev_flow->flow, flow)) { |
61e7deb1 | 1025 | return netdev_flow; |
72865317 BP |
1026 | } |
1027 | } | |
8a4e3a85 | 1028 | |
72865317 BP |
1029 | return NULL; |
1030 | } | |
1031 | ||
1032 | static void | |
1763b4b8 GS |
1033 | get_dpif_flow_stats(struct dp_netdev_flow *netdev_flow, |
1034 | struct dpif_flow_stats *stats) | |
feebdea2 | 1035 | { |
679ba04c BP |
1036 | struct dp_netdev_flow_stats *bucket; |
1037 | size_t i; | |
1038 | ||
1039 | memset(stats, 0, sizeof *stats); | |
1040 | OVSTHREAD_STATS_FOR_EACH_BUCKET (bucket, i, &netdev_flow->stats) { | |
1041 | ovs_mutex_lock(&bucket->mutex); | |
1042 | stats->n_packets += bucket->packet_count; | |
1043 | stats->n_bytes += bucket->byte_count; | |
1044 | stats->used = MAX(stats->used, bucket->used); | |
1045 | stats->tcp_flags |= bucket->tcp_flags; | |
1046 | ovs_mutex_unlock(&bucket->mutex); | |
1047 | } | |
72865317 BP |
1048 | } |
1049 | ||
36956a7d | 1050 | static int |
8c301900 JR |
1051 | dpif_netdev_mask_from_nlattrs(const struct nlattr *key, uint32_t key_len, |
1052 | const struct nlattr *mask_key, | |
1053 | uint32_t mask_key_len, const struct flow *flow, | |
1054 | struct flow *mask) | |
1055 | { | |
1056 | if (mask_key_len) { | |
80e44883 BP |
1057 | enum odp_key_fitness fitness; |
1058 | ||
1059 | fitness = odp_flow_key_to_mask(mask_key, mask_key_len, mask, flow); | |
1060 | if (fitness) { | |
8c301900 JR |
1061 | /* This should not happen: it indicates that |
1062 | * odp_flow_key_from_mask() and odp_flow_key_to_mask() | |
1063 | * disagree on the acceptable form of a mask. Log the problem | |
1064 | * as an error, with enough details to enable debugging. */ | |
1065 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1066 | ||
1067 | if (!VLOG_DROP_ERR(&rl)) { | |
1068 | struct ds s; | |
1069 | ||
1070 | ds_init(&s); | |
1071 | odp_flow_format(key, key_len, mask_key, mask_key_len, NULL, &s, | |
1072 | true); | |
80e44883 BP |
1073 | VLOG_ERR("internal error parsing flow mask %s (%s)", |
1074 | ds_cstr(&s), odp_key_fitness_to_string(fitness)); | |
8c301900 JR |
1075 | ds_destroy(&s); |
1076 | } | |
1077 | ||
1078 | return EINVAL; | |
1079 | } | |
1080 | /* Force unwildcard the in_port. */ | |
1081 | mask->in_port.odp_port = u32_to_odp(UINT32_MAX); | |
1082 | } else { | |
1083 | enum mf_field_id id; | |
1084 | /* No mask key, unwildcard everything except fields whose | |
1085 | * prerequisities are not met. */ | |
1086 | memset(mask, 0x0, sizeof *mask); | |
1087 | ||
1088 | for (id = 0; id < MFF_N_IDS; ++id) { | |
1089 | /* Skip registers and metadata. */ | |
1090 | if (!(id >= MFF_REG0 && id < MFF_REG0 + FLOW_N_REGS) | |
1091 | && id != MFF_METADATA) { | |
1092 | const struct mf_field *mf = mf_from_id(id); | |
1093 | if (mf_are_prereqs_ok(mf, flow)) { | |
1094 | mf_mask_field(mf, mask); | |
1095 | } | |
1096 | } | |
1097 | } | |
1098 | } | |
1099 | ||
1100 | return 0; | |
1101 | } | |
1102 | ||
1103 | static int | |
1104 | dpif_netdev_flow_from_nlattrs(const struct nlattr *key, uint32_t key_len, | |
1105 | struct flow *flow) | |
36956a7d | 1106 | { |
586ddea5 BP |
1107 | odp_port_t in_port; |
1108 | ||
8c301900 | 1109 | if (odp_flow_key_to_flow(key, key_len, flow)) { |
36956a7d | 1110 | /* This should not happen: it indicates that odp_flow_key_from_flow() |
8c301900 JR |
1111 | * and odp_flow_key_to_flow() disagree on the acceptable form of a |
1112 | * flow. Log the problem as an error, with enough details to enable | |
1113 | * debugging. */ | |
36956a7d BP |
1114 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
1115 | ||
1116 | if (!VLOG_DROP_ERR(&rl)) { | |
1117 | struct ds s; | |
1118 | ||
1119 | ds_init(&s); | |
8c301900 | 1120 | odp_flow_format(key, key_len, NULL, 0, NULL, &s, true); |
36956a7d BP |
1121 | VLOG_ERR("internal error parsing flow key %s", ds_cstr(&s)); |
1122 | ds_destroy(&s); | |
1123 | } | |
1124 | ||
1125 | return EINVAL; | |
1126 | } | |
1127 | ||
586ddea5 BP |
1128 | in_port = flow->in_port.odp_port; |
1129 | if (!is_valid_port_number(in_port) && in_port != ODPP_NONE) { | |
18886b60 BP |
1130 | return EINVAL; |
1131 | } | |
1132 | ||
36956a7d BP |
1133 | return 0; |
1134 | } | |
1135 | ||
72865317 | 1136 | static int |
693c4a01 | 1137 | dpif_netdev_flow_get(const struct dpif *dpif, |
feebdea2 | 1138 | const struct nlattr *nl_key, size_t nl_key_len, |
c97fb132 | 1139 | struct ofpbuf **actionsp, struct dpif_flow_stats *stats) |
72865317 BP |
1140 | { |
1141 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
1763b4b8 | 1142 | struct dp_netdev_flow *netdev_flow; |
bc4a05c6 BP |
1143 | struct flow key; |
1144 | int error; | |
36956a7d | 1145 | |
feebdea2 | 1146 | error = dpif_netdev_flow_from_nlattrs(nl_key, nl_key_len, &key); |
bc4a05c6 BP |
1147 | if (error) { |
1148 | return error; | |
1149 | } | |
14608a15 | 1150 | |
06f81620 | 1151 | fat_rwlock_rdlock(&dp->cls.rwlock); |
2c0ea78f | 1152 | netdev_flow = dp_netdev_find_flow(dp, &key); |
06f81620 | 1153 | fat_rwlock_unlock(&dp->cls.rwlock); |
8a4e3a85 | 1154 | |
1763b4b8 | 1155 | if (netdev_flow) { |
5279f8fd | 1156 | if (stats) { |
1763b4b8 | 1157 | get_dpif_flow_stats(netdev_flow, stats); |
5279f8fd | 1158 | } |
679ba04c | 1159 | |
5279f8fd | 1160 | if (actionsp) { |
61e7deb1 | 1161 | struct dp_netdev_actions *actions; |
8a4e3a85 | 1162 | |
61e7deb1 | 1163 | actions = dp_netdev_flow_get_actions(netdev_flow); |
8a4e3a85 | 1164 | *actionsp = ofpbuf_clone_data(actions->actions, actions->size); |
5279f8fd | 1165 | } |
61e7deb1 | 1166 | } else { |
5279f8fd | 1167 | error = ENOENT; |
72865317 | 1168 | } |
bc4a05c6 | 1169 | |
5279f8fd | 1170 | return error; |
72865317 BP |
1171 | } |
1172 | ||
72865317 | 1173 | static int |
2c0ea78f GS |
1174 | dp_netdev_flow_add(struct dp_netdev *dp, const struct flow *flow, |
1175 | const struct flow_wildcards *wc, | |
1176 | const struct nlattr *actions, | |
1177 | size_t actions_len) | |
8a4e3a85 | 1178 | OVS_REQUIRES(dp->flow_mutex) |
72865317 | 1179 | { |
1763b4b8 | 1180 | struct dp_netdev_flow *netdev_flow; |
2c0ea78f | 1181 | struct match match; |
72865317 | 1182 | |
1763b4b8 | 1183 | netdev_flow = xzalloc(sizeof *netdev_flow); |
8a4e3a85 | 1184 | *CONST_CAST(struct flow *, &netdev_flow->flow) = *flow; |
8a4e3a85 BP |
1185 | |
1186 | ovs_mutex_init(&netdev_flow->mutex); | |
8a4e3a85 | 1187 | |
679ba04c BP |
1188 | ovsthread_stats_init(&netdev_flow->stats); |
1189 | ||
61e7deb1 BP |
1190 | ovsrcu_set(&netdev_flow->actions, |
1191 | dp_netdev_actions_create(actions, actions_len)); | |
2c0ea78f GS |
1192 | |
1193 | match_init(&match, flow, wc); | |
8a4e3a85 BP |
1194 | cls_rule_init(CONST_CAST(struct cls_rule *, &netdev_flow->cr), |
1195 | &match, NETDEV_RULE_PRIORITY); | |
06f81620 | 1196 | fat_rwlock_wrlock(&dp->cls.rwlock); |
8a4e3a85 BP |
1197 | classifier_insert(&dp->cls, |
1198 | CONST_CAST(struct cls_rule *, &netdev_flow->cr)); | |
1199 | hmap_insert(&dp->flow_table, | |
1200 | CONST_CAST(struct hmap_node *, &netdev_flow->node), | |
1201 | flow_hash(flow, 0)); | |
06f81620 | 1202 | fat_rwlock_unlock(&dp->cls.rwlock); |
72865317 | 1203 | |
72865317 BP |
1204 | return 0; |
1205 | } | |
1206 | ||
1207 | static void | |
1763b4b8 | 1208 | clear_stats(struct dp_netdev_flow *netdev_flow) |
72865317 | 1209 | { |
679ba04c BP |
1210 | struct dp_netdev_flow_stats *bucket; |
1211 | size_t i; | |
1212 | ||
1213 | OVSTHREAD_STATS_FOR_EACH_BUCKET (bucket, i, &netdev_flow->stats) { | |
1214 | ovs_mutex_lock(&bucket->mutex); | |
1215 | bucket->used = 0; | |
1216 | bucket->packet_count = 0; | |
1217 | bucket->byte_count = 0; | |
1218 | bucket->tcp_flags = 0; | |
1219 | ovs_mutex_unlock(&bucket->mutex); | |
1220 | } | |
72865317 BP |
1221 | } |
1222 | ||
1223 | static int | |
89625d1e | 1224 | dpif_netdev_flow_put(struct dpif *dpif, const struct dpif_flow_put *put) |
72865317 BP |
1225 | { |
1226 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
1763b4b8 | 1227 | struct dp_netdev_flow *netdev_flow; |
2c0ea78f GS |
1228 | struct flow flow; |
1229 | struct flow_wildcards wc; | |
36956a7d BP |
1230 | int error; |
1231 | ||
8c301900 JR |
1232 | error = dpif_netdev_flow_from_nlattrs(put->key, put->key_len, &flow); |
1233 | if (error) { | |
1234 | return error; | |
1235 | } | |
1236 | error = dpif_netdev_mask_from_nlattrs(put->key, put->key_len, | |
1237 | put->mask, put->mask_len, | |
1238 | &flow, &wc.masks); | |
36956a7d BP |
1239 | if (error) { |
1240 | return error; | |
1241 | } | |
72865317 | 1242 | |
8a4e3a85 | 1243 | ovs_mutex_lock(&dp->flow_mutex); |
2c0ea78f | 1244 | netdev_flow = dp_netdev_lookup_flow(dp, &flow); |
1763b4b8 | 1245 | if (!netdev_flow) { |
89625d1e | 1246 | if (put->flags & DPIF_FP_CREATE) { |
72865317 | 1247 | if (hmap_count(&dp->flow_table) < MAX_FLOWS) { |
89625d1e BP |
1248 | if (put->stats) { |
1249 | memset(put->stats, 0, sizeof *put->stats); | |
feebdea2 | 1250 | } |
2c0ea78f | 1251 | error = dp_netdev_flow_add(dp, &flow, &wc, put->actions, |
5279f8fd | 1252 | put->actions_len); |
72865317 | 1253 | } else { |
5279f8fd | 1254 | error = EFBIG; |
72865317 BP |
1255 | } |
1256 | } else { | |
5279f8fd | 1257 | error = ENOENT; |
72865317 BP |
1258 | } |
1259 | } else { | |
2c0ea78f GS |
1260 | if (put->flags & DPIF_FP_MODIFY |
1261 | && flow_equal(&flow, &netdev_flow->flow)) { | |
8a4e3a85 BP |
1262 | struct dp_netdev_actions *new_actions; |
1263 | struct dp_netdev_actions *old_actions; | |
1264 | ||
1265 | new_actions = dp_netdev_actions_create(put->actions, | |
1266 | put->actions_len); | |
1267 | ||
61e7deb1 BP |
1268 | old_actions = dp_netdev_flow_get_actions(netdev_flow); |
1269 | ovsrcu_set(&netdev_flow->actions, new_actions); | |
679ba04c | 1270 | |
a84cb64a BP |
1271 | if (put->stats) { |
1272 | get_dpif_flow_stats(netdev_flow, put->stats); | |
1273 | } | |
1274 | if (put->flags & DPIF_FP_ZERO_STATS) { | |
1275 | clear_stats(netdev_flow); | |
72865317 | 1276 | } |
8a4e3a85 | 1277 | |
61e7deb1 | 1278 | ovsrcu_postpone(dp_netdev_actions_free, old_actions); |
2c0ea78f | 1279 | } else if (put->flags & DPIF_FP_CREATE) { |
5279f8fd | 1280 | error = EEXIST; |
2c0ea78f GS |
1281 | } else { |
1282 | /* Overlapping flow. */ | |
1283 | error = EINVAL; | |
72865317 BP |
1284 | } |
1285 | } | |
8a4e3a85 | 1286 | ovs_mutex_unlock(&dp->flow_mutex); |
5279f8fd BP |
1287 | |
1288 | return error; | |
72865317 BP |
1289 | } |
1290 | ||
72865317 | 1291 | static int |
b99d3cee | 1292 | dpif_netdev_flow_del(struct dpif *dpif, const struct dpif_flow_del *del) |
72865317 BP |
1293 | { |
1294 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
1763b4b8 | 1295 | struct dp_netdev_flow *netdev_flow; |
14608a15 | 1296 | struct flow key; |
36956a7d BP |
1297 | int error; |
1298 | ||
b99d3cee | 1299 | error = dpif_netdev_flow_from_nlattrs(del->key, del->key_len, &key); |
36956a7d BP |
1300 | if (error) { |
1301 | return error; | |
1302 | } | |
72865317 | 1303 | |
8a4e3a85 | 1304 | ovs_mutex_lock(&dp->flow_mutex); |
06f81620 | 1305 | fat_rwlock_wrlock(&dp->cls.rwlock); |
2c0ea78f | 1306 | netdev_flow = dp_netdev_find_flow(dp, &key); |
1763b4b8 | 1307 | if (netdev_flow) { |
b99d3cee | 1308 | if (del->stats) { |
1763b4b8 | 1309 | get_dpif_flow_stats(netdev_flow, del->stats); |
feebdea2 | 1310 | } |
8a4e3a85 | 1311 | dp_netdev_remove_flow(dp, netdev_flow); |
72865317 | 1312 | } else { |
5279f8fd | 1313 | error = ENOENT; |
72865317 | 1314 | } |
06f81620 | 1315 | fat_rwlock_unlock(&dp->cls.rwlock); |
8a4e3a85 | 1316 | ovs_mutex_unlock(&dp->flow_mutex); |
5279f8fd BP |
1317 | |
1318 | return error; | |
72865317 BP |
1319 | } |
1320 | ||
704a1e09 | 1321 | struct dp_netdev_flow_state { |
a84cb64a | 1322 | struct dp_netdev_actions *actions; |
19cf4069 | 1323 | struct odputil_keybuf keybuf; |
2c0ea78f | 1324 | struct odputil_keybuf maskbuf; |
c97fb132 | 1325 | struct dpif_flow_stats stats; |
704a1e09 BP |
1326 | }; |
1327 | ||
e723fd32 JS |
1328 | struct dp_netdev_flow_iter { |
1329 | uint32_t bucket; | |
1330 | uint32_t offset; | |
d2ad7ef1 JS |
1331 | int status; |
1332 | struct ovs_mutex mutex; | |
e723fd32 JS |
1333 | }; |
1334 | ||
1335 | static void | |
1336 | dpif_netdev_flow_dump_state_init(void **statep) | |
72865317 | 1337 | { |
feebdea2 BP |
1338 | struct dp_netdev_flow_state *state; |
1339 | ||
1340 | *statep = state = xmalloc(sizeof *state); | |
feebdea2 | 1341 | state->actions = NULL; |
e723fd32 JS |
1342 | } |
1343 | ||
1344 | static void | |
1345 | dpif_netdev_flow_dump_state_uninit(void *state_) | |
1346 | { | |
1347 | struct dp_netdev_flow_state *state = state_; | |
1348 | ||
e723fd32 JS |
1349 | free(state); |
1350 | } | |
1351 | ||
1352 | static int | |
1353 | dpif_netdev_flow_dump_start(const struct dpif *dpif OVS_UNUSED, void **iterp) | |
1354 | { | |
1355 | struct dp_netdev_flow_iter *iter; | |
1356 | ||
1357 | *iterp = iter = xmalloc(sizeof *iter); | |
1358 | iter->bucket = 0; | |
1359 | iter->offset = 0; | |
d2ad7ef1 JS |
1360 | iter->status = 0; |
1361 | ovs_mutex_init(&iter->mutex); | |
704a1e09 BP |
1362 | return 0; |
1363 | } | |
1364 | ||
61e7deb1 | 1365 | /* XXX the caller must use 'actions' without quiescing */ |
704a1e09 | 1366 | static int |
d2ad7ef1 | 1367 | dpif_netdev_flow_dump_next(const struct dpif *dpif, void *iter_, void *state_, |
feebdea2 | 1368 | const struct nlattr **key, size_t *key_len, |
e6cc0bab | 1369 | const struct nlattr **mask, size_t *mask_len, |
feebdea2 | 1370 | const struct nlattr **actions, size_t *actions_len, |
c97fb132 | 1371 | const struct dpif_flow_stats **stats) |
704a1e09 | 1372 | { |
e723fd32 | 1373 | struct dp_netdev_flow_iter *iter = iter_; |
d2ad7ef1 | 1374 | struct dp_netdev_flow_state *state = state_; |
72865317 | 1375 | struct dp_netdev *dp = get_dp_netdev(dpif); |
1763b4b8 | 1376 | struct dp_netdev_flow *netdev_flow; |
d2ad7ef1 | 1377 | int error; |
14608a15 | 1378 | |
d2ad7ef1 JS |
1379 | ovs_mutex_lock(&iter->mutex); |
1380 | error = iter->status; | |
1381 | if (!error) { | |
1382 | struct hmap_node *node; | |
1383 | ||
1384 | fat_rwlock_rdlock(&dp->cls.rwlock); | |
1385 | node = hmap_at_position(&dp->flow_table, &iter->bucket, &iter->offset); | |
1386 | if (node) { | |
1387 | netdev_flow = CONTAINER_OF(node, struct dp_netdev_flow, node); | |
d2ad7ef1 JS |
1388 | } |
1389 | fat_rwlock_unlock(&dp->cls.rwlock); | |
1390 | if (!node) { | |
1391 | iter->status = error = EOF; | |
1392 | } | |
8a4e3a85 | 1393 | } |
d2ad7ef1 JS |
1394 | ovs_mutex_unlock(&iter->mutex); |
1395 | if (error) { | |
1396 | return error; | |
72865317 | 1397 | } |
704a1e09 | 1398 | |
feebdea2 BP |
1399 | if (key) { |
1400 | struct ofpbuf buf; | |
1401 | ||
19cf4069 | 1402 | ofpbuf_use_stack(&buf, &state->keybuf, sizeof state->keybuf); |
2c0ea78f GS |
1403 | odp_flow_key_from_flow(&buf, &netdev_flow->flow, |
1404 | netdev_flow->flow.in_port.odp_port); | |
36956a7d | 1405 | |
feebdea2 BP |
1406 | *key = buf.data; |
1407 | *key_len = buf.size; | |
1408 | } | |
1409 | ||
2c0ea78f GS |
1410 | if (key && mask) { |
1411 | struct ofpbuf buf; | |
1412 | struct flow_wildcards wc; | |
1413 | ||
1414 | ofpbuf_use_stack(&buf, &state->maskbuf, sizeof state->maskbuf); | |
1415 | minimask_expand(&netdev_flow->cr.match.mask, &wc); | |
1416 | odp_flow_key_from_mask(&buf, &wc.masks, &netdev_flow->flow, | |
8bfd0fda BP |
1417 | odp_to_u32(wc.masks.in_port.odp_port), |
1418 | SIZE_MAX); | |
2c0ea78f GS |
1419 | |
1420 | *mask = buf.data; | |
1421 | *mask_len = buf.size; | |
e6cc0bab AZ |
1422 | } |
1423 | ||
8a4e3a85 | 1424 | if (actions || stats) { |
8a4e3a85 | 1425 | state->actions = NULL; |
feebdea2 | 1426 | |
8a4e3a85 | 1427 | if (actions) { |
61e7deb1 | 1428 | state->actions = dp_netdev_flow_get_actions(netdev_flow); |
8a4e3a85 BP |
1429 | *actions = state->actions->actions; |
1430 | *actions_len = state->actions->size; | |
1431 | } | |
679ba04c | 1432 | |
8a4e3a85 BP |
1433 | if (stats) { |
1434 | get_dpif_flow_stats(netdev_flow, &state->stats); | |
1435 | *stats = &state->stats; | |
1436 | } | |
feebdea2 | 1437 | } |
704a1e09 BP |
1438 | |
1439 | return 0; | |
1440 | } | |
1441 | ||
1442 | static int | |
e723fd32 | 1443 | dpif_netdev_flow_dump_done(const struct dpif *dpif OVS_UNUSED, void *iter_) |
704a1e09 | 1444 | { |
e723fd32 | 1445 | struct dp_netdev_flow_iter *iter = iter_; |
feebdea2 | 1446 | |
d2ad7ef1 | 1447 | ovs_mutex_destroy(&iter->mutex); |
e723fd32 | 1448 | free(iter); |
704a1e09 | 1449 | return 0; |
72865317 BP |
1450 | } |
1451 | ||
1452 | static int | |
758c456d | 1453 | dpif_netdev_execute(struct dpif *dpif, struct dpif_execute *execute) |
72865317 BP |
1454 | { |
1455 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
758c456d JR |
1456 | struct pkt_metadata *md = &execute->md; |
1457 | struct flow key; | |
72865317 | 1458 | |
89625d1e BP |
1459 | if (execute->packet->size < ETH_HEADER_LEN || |
1460 | execute->packet->size > UINT16_MAX) { | |
72865317 BP |
1461 | return EINVAL; |
1462 | } | |
1463 | ||
758c456d | 1464 | /* Extract flow key. */ |
b5e7e61a | 1465 | flow_extract(execute->packet, md, &key); |
8a4e3a85 BP |
1466 | |
1467 | ovs_rwlock_rdlock(&dp->port_rwlock); | |
758c456d JR |
1468 | dp_netdev_execute_actions(dp, &key, execute->packet, md, execute->actions, |
1469 | execute->actions_len); | |
8a4e3a85 BP |
1470 | ovs_rwlock_unlock(&dp->port_rwlock); |
1471 | ||
758c456d | 1472 | return 0; |
72865317 BP |
1473 | } |
1474 | ||
1475 | static int | |
a12b3ead | 1476 | dpif_netdev_recv_set(struct dpif *dpif OVS_UNUSED, bool enable OVS_UNUSED) |
72865317 | 1477 | { |
82272ede | 1478 | return 0; |
72865317 BP |
1479 | } |
1480 | ||
5bf93d67 EJ |
1481 | static int |
1482 | dpif_netdev_queue_to_priority(const struct dpif *dpif OVS_UNUSED, | |
1483 | uint32_t queue_id, uint32_t *priority) | |
1484 | { | |
1485 | *priority = queue_id; | |
1486 | return 0; | |
1487 | } | |
1488 | ||
856081f6 | 1489 | static struct dp_netdev_queue * |
f5126b57 BP |
1490 | find_nonempty_queue(struct dp_netdev *dp) |
1491 | OVS_REQUIRES(dp->queue_mutex) | |
72865317 | 1492 | { |
72865317 BP |
1493 | int i; |
1494 | ||
1495 | for (i = 0; i < N_QUEUES; i++) { | |
856081f6 | 1496 | struct dp_netdev_queue *q = &dp->queues[i]; |
a12b3ead | 1497 | if (q->head != q->tail) { |
856081f6 | 1498 | return q; |
72865317 BP |
1499 | } |
1500 | } | |
856081f6 | 1501 | return NULL; |
72865317 BP |
1502 | } |
1503 | ||
1504 | static int | |
90a7c55e BP |
1505 | dpif_netdev_recv(struct dpif *dpif, struct dpif_upcall *upcall, |
1506 | struct ofpbuf *buf) | |
72865317 | 1507 | { |
f5126b57 | 1508 | struct dp_netdev *dp = get_dp_netdev(dpif); |
5279f8fd BP |
1509 | struct dp_netdev_queue *q; |
1510 | int error; | |
1511 | ||
f5126b57 BP |
1512 | ovs_mutex_lock(&dp->queue_mutex); |
1513 | q = find_nonempty_queue(dp); | |
856081f6 | 1514 | if (q) { |
d88b629b BP |
1515 | struct dp_netdev_upcall *u = &q->upcalls[q->tail++ & QUEUE_MASK]; |
1516 | ||
1517 | *upcall = u->upcall; | |
b3907fbc | 1518 | |
90a7c55e | 1519 | ofpbuf_uninit(buf); |
d88b629b | 1520 | *buf = u->buf; |
90a7c55e | 1521 | |
5279f8fd | 1522 | error = 0; |
72865317 | 1523 | } else { |
5279f8fd | 1524 | error = EAGAIN; |
72865317 | 1525 | } |
f5126b57 | 1526 | ovs_mutex_unlock(&dp->queue_mutex); |
5279f8fd BP |
1527 | |
1528 | return error; | |
72865317 BP |
1529 | } |
1530 | ||
1531 | static void | |
1532 | dpif_netdev_recv_wait(struct dpif *dpif) | |
1533 | { | |
d33ed218 BP |
1534 | struct dp_netdev *dp = get_dp_netdev(dpif); |
1535 | uint64_t seq; | |
5279f8fd | 1536 | |
f5126b57 | 1537 | ovs_mutex_lock(&dp->queue_mutex); |
d33ed218 | 1538 | seq = seq_read(dp->queue_seq); |
f5126b57 | 1539 | if (find_nonempty_queue(dp)) { |
72865317 | 1540 | poll_immediate_wake(); |
d33ed218 BP |
1541 | } else { |
1542 | seq_wait(dp->queue_seq, seq); | |
72865317 | 1543 | } |
f5126b57 | 1544 | ovs_mutex_unlock(&dp->queue_mutex); |
72865317 | 1545 | } |
1ba530f4 BP |
1546 | |
1547 | static void | |
1548 | dpif_netdev_recv_purge(struct dpif *dpif) | |
1549 | { | |
1550 | struct dpif_netdev *dpif_netdev = dpif_netdev_cast(dpif); | |
f5126b57 | 1551 | |
1ba530f4 BP |
1552 | dp_netdev_purge_queues(dpif_netdev->dp); |
1553 | } | |
72865317 | 1554 | \f |
a84cb64a BP |
1555 | /* Creates and returns a new 'struct dp_netdev_actions', with a reference count |
1556 | * of 1, whose actions are a copy of from the 'ofpacts_len' bytes of | |
1557 | * 'ofpacts'. */ | |
1558 | struct dp_netdev_actions * | |
1559 | dp_netdev_actions_create(const struct nlattr *actions, size_t size) | |
1560 | { | |
1561 | struct dp_netdev_actions *netdev_actions; | |
1562 | ||
1563 | netdev_actions = xmalloc(sizeof *netdev_actions); | |
a84cb64a BP |
1564 | netdev_actions->actions = xmemdup(actions, size); |
1565 | netdev_actions->size = size; | |
1566 | ||
1567 | return netdev_actions; | |
1568 | } | |
1569 | ||
a84cb64a | 1570 | struct dp_netdev_actions * |
61e7deb1 | 1571 | dp_netdev_flow_get_actions(const struct dp_netdev_flow *flow) |
a84cb64a | 1572 | { |
61e7deb1 | 1573 | return ovsrcu_get(struct dp_netdev_actions *, &flow->actions); |
a84cb64a BP |
1574 | } |
1575 | ||
61e7deb1 BP |
1576 | static void |
1577 | dp_netdev_actions_free(struct dp_netdev_actions *actions) | |
a84cb64a | 1578 | { |
61e7deb1 BP |
1579 | free(actions->actions); |
1580 | free(actions); | |
a84cb64a BP |
1581 | } |
1582 | \f | |
6c3eee82 BP |
1583 | static void * |
1584 | dp_forwarder_main(void *f_) | |
1585 | { | |
1586 | struct dp_forwarder *f = f_; | |
1587 | struct dp_netdev *dp = f->dp; | |
1588 | struct ofpbuf packet; | |
1589 | ||
1590 | f->name = xasprintf("forwarder_%u", ovsthread_id_self()); | |
1591 | set_subprogram_name("%s", f->name); | |
1592 | ||
1593 | ofpbuf_init(&packet, 0); | |
1594 | while (!latch_is_set(&dp->exit_latch)) { | |
1595 | bool received_anything; | |
1596 | int i; | |
1597 | ||
1598 | ovs_rwlock_rdlock(&dp->port_rwlock); | |
1599 | for (i = 0; i < 50; i++) { | |
1600 | struct dp_netdev_port *port; | |
1601 | ||
1602 | received_anything = false; | |
1603 | HMAP_FOR_EACH (port, node, &f->dp->ports) { | |
1604 | if (port->rx | |
1605 | && port->node.hash >= f->min_hash | |
1606 | && port->node.hash <= f->max_hash) { | |
1607 | int buf_size; | |
1608 | int error; | |
1609 | int mtu; | |
1610 | ||
1611 | if (netdev_get_mtu(port->netdev, &mtu)) { | |
1612 | mtu = ETH_PAYLOAD_MAX; | |
1613 | } | |
1614 | buf_size = DP_NETDEV_HEADROOM + VLAN_ETH_HEADER_LEN + mtu; | |
1615 | ||
1616 | ofpbuf_clear(&packet); | |
1617 | ofpbuf_reserve_with_tailroom(&packet, DP_NETDEV_HEADROOM, | |
1618 | buf_size); | |
1619 | ||
1620 | error = netdev_rx_recv(port->rx, &packet); | |
1621 | if (!error) { | |
1622 | struct pkt_metadata md | |
1623 | = PKT_METADATA_INITIALIZER(port->port_no); | |
6c3eee82 | 1624 | |
b5e7e61a | 1625 | dp_netdev_port_input(dp, &packet, &md); |
6c3eee82 BP |
1626 | received_anything = true; |
1627 | } else if (error != EAGAIN && error != EOPNOTSUPP) { | |
1628 | static struct vlog_rate_limit rl | |
1629 | = VLOG_RATE_LIMIT_INIT(1, 5); | |
1630 | ||
1631 | VLOG_ERR_RL(&rl, "error receiving data from %s: %s", | |
1632 | netdev_get_name(port->netdev), | |
1633 | ovs_strerror(error)); | |
1634 | } | |
1635 | } | |
1636 | } | |
1637 | ||
1638 | if (!received_anything) { | |
1639 | break; | |
1640 | } | |
1641 | } | |
1642 | ||
1643 | if (received_anything) { | |
1644 | poll_immediate_wake(); | |
1645 | } else { | |
1646 | struct dp_netdev_port *port; | |
1647 | ||
1648 | HMAP_FOR_EACH (port, node, &f->dp->ports) | |
1649 | if (port->rx | |
1650 | && port->node.hash >= f->min_hash | |
1651 | && port->node.hash <= f->max_hash) { | |
1652 | netdev_rx_wait(port->rx); | |
1653 | } | |
1654 | seq_wait(dp->port_seq, seq_read(dp->port_seq)); | |
1655 | latch_wait(&dp->exit_latch); | |
1656 | } | |
1657 | ovs_rwlock_unlock(&dp->port_rwlock); | |
1658 | ||
1659 | poll_block(); | |
1660 | } | |
1661 | ofpbuf_uninit(&packet); | |
1662 | ||
1663 | free(f->name); | |
1664 | ||
1665 | return NULL; | |
1666 | } | |
1667 | ||
1668 | static void | |
1669 | dp_netdev_set_threads(struct dp_netdev *dp, int n) | |
1670 | { | |
1671 | int i; | |
1672 | ||
1673 | if (n == dp->n_forwarders) { | |
1674 | return; | |
1675 | } | |
1676 | ||
1677 | /* Stop existing threads. */ | |
1678 | latch_set(&dp->exit_latch); | |
1679 | for (i = 0; i < dp->n_forwarders; i++) { | |
1680 | struct dp_forwarder *f = &dp->forwarders[i]; | |
1681 | ||
1682 | xpthread_join(f->thread, NULL); | |
1683 | } | |
1684 | latch_poll(&dp->exit_latch); | |
1685 | free(dp->forwarders); | |
1686 | ||
1687 | /* Start new threads. */ | |
1688 | dp->forwarders = xmalloc(n * sizeof *dp->forwarders); | |
1689 | dp->n_forwarders = n; | |
1690 | for (i = 0; i < n; i++) { | |
1691 | struct dp_forwarder *f = &dp->forwarders[i]; | |
1692 | ||
1693 | f->dp = dp; | |
1694 | f->min_hash = UINT32_MAX / n * i; | |
1695 | f->max_hash = UINT32_MAX / n * (i + 1) - 1; | |
1696 | if (i == n - 1) { | |
1697 | f->max_hash = UINT32_MAX; | |
1698 | } | |
1699 | xpthread_create(&f->thread, NULL, dp_forwarder_main, f); | |
1700 | } | |
1701 | } | |
1702 | \f | |
679ba04c BP |
1703 | static void * |
1704 | dp_netdev_flow_stats_new_cb(void) | |
1705 | { | |
1706 | struct dp_netdev_flow_stats *bucket = xzalloc_cacheline(sizeof *bucket); | |
1707 | ovs_mutex_init(&bucket->mutex); | |
1708 | return bucket; | |
1709 | } | |
1710 | ||
72865317 | 1711 | static void |
1763b4b8 GS |
1712 | dp_netdev_flow_used(struct dp_netdev_flow *netdev_flow, |
1713 | const struct ofpbuf *packet) | |
72865317 | 1714 | { |
679ba04c BP |
1715 | uint16_t tcp_flags = packet_get_tcp_flags(packet, &netdev_flow->flow); |
1716 | long long int now = time_msec(); | |
1717 | struct dp_netdev_flow_stats *bucket; | |
1718 | ||
1719 | bucket = ovsthread_stats_bucket_get(&netdev_flow->stats, | |
1720 | dp_netdev_flow_stats_new_cb); | |
1721 | ||
1722 | ovs_mutex_lock(&bucket->mutex); | |
1723 | bucket->used = MAX(now, bucket->used); | |
1724 | bucket->packet_count++; | |
1725 | bucket->byte_count += packet->size; | |
1726 | bucket->tcp_flags |= tcp_flags; | |
1727 | ovs_mutex_unlock(&bucket->mutex); | |
72865317 BP |
1728 | } |
1729 | ||
51852a57 BP |
1730 | static void * |
1731 | dp_netdev_stats_new_cb(void) | |
1732 | { | |
1733 | struct dp_netdev_stats *bucket = xzalloc_cacheline(sizeof *bucket); | |
1734 | ovs_mutex_init(&bucket->mutex); | |
1735 | return bucket; | |
1736 | } | |
1737 | ||
1738 | static void | |
1739 | dp_netdev_count_packet(struct dp_netdev *dp, enum dp_stat_type type) | |
1740 | { | |
1741 | struct dp_netdev_stats *bucket; | |
1742 | ||
1743 | bucket = ovsthread_stats_bucket_get(&dp->stats, dp_netdev_stats_new_cb); | |
1744 | ovs_mutex_lock(&bucket->mutex); | |
1745 | bucket->n[type]++; | |
1746 | ovs_mutex_unlock(&bucket->mutex); | |
1747 | } | |
1748 | ||
72865317 | 1749 | static void |
758c456d JR |
1750 | dp_netdev_port_input(struct dp_netdev *dp, struct ofpbuf *packet, |
1751 | struct pkt_metadata *md) | |
8a4e3a85 | 1752 | OVS_REQ_RDLOCK(dp->port_rwlock) |
72865317 | 1753 | { |
1763b4b8 | 1754 | struct dp_netdev_flow *netdev_flow; |
14608a15 | 1755 | struct flow key; |
72865317 | 1756 | |
1805876e BP |
1757 | if (packet->size < ETH_HEADER_LEN) { |
1758 | return; | |
1759 | } | |
b5e7e61a | 1760 | flow_extract(packet, md, &key); |
1763b4b8 GS |
1761 | netdev_flow = dp_netdev_lookup_flow(dp, &key); |
1762 | if (netdev_flow) { | |
a84cb64a BP |
1763 | struct dp_netdev_actions *actions; |
1764 | ||
1763b4b8 | 1765 | dp_netdev_flow_used(netdev_flow, packet); |
679ba04c | 1766 | |
61e7deb1 | 1767 | actions = dp_netdev_flow_get_actions(netdev_flow); |
758c456d | 1768 | dp_netdev_execute_actions(dp, &key, packet, md, |
a84cb64a | 1769 | actions->actions, actions->size); |
51852a57 | 1770 | dp_netdev_count_packet(dp, DP_STAT_HIT); |
72865317 | 1771 | } else { |
51852a57 | 1772 | dp_netdev_count_packet(dp, DP_STAT_MISS); |
e995e3df | 1773 | dp_netdev_output_userspace(dp, packet, DPIF_UC_MISS, &key, NULL); |
72865317 BP |
1774 | } |
1775 | } | |
1776 | ||
72865317 | 1777 | static int |
da546e07 | 1778 | dp_netdev_output_userspace(struct dp_netdev *dp, struct ofpbuf *packet, |
e995e3df BP |
1779 | int queue_no, const struct flow *flow, |
1780 | const struct nlattr *userdata) | |
f5126b57 | 1781 | OVS_EXCLUDED(dp->queue_mutex) |
72865317 | 1782 | { |
856081f6 | 1783 | struct dp_netdev_queue *q = &dp->queues[queue_no]; |
f5126b57 BP |
1784 | int error; |
1785 | ||
1786 | ovs_mutex_lock(&dp->queue_mutex); | |
e995e3df BP |
1787 | if (q->head - q->tail < MAX_QUEUE_LEN) { |
1788 | struct dp_netdev_upcall *u = &q->upcalls[q->head++ & QUEUE_MASK]; | |
1789 | struct dpif_upcall *upcall = &u->upcall; | |
1790 | struct ofpbuf *buf = &u->buf; | |
1791 | size_t buf_size; | |
1792 | ||
1793 | upcall->type = queue_no; | |
1794 | ||
1795 | /* Allocate buffer big enough for everything. */ | |
da546e07 | 1796 | buf_size = ODPUTIL_FLOW_KEY_BYTES; |
e995e3df BP |
1797 | if (userdata) { |
1798 | buf_size += NLA_ALIGN(userdata->nla_len); | |
1799 | } | |
1800 | ofpbuf_init(buf, buf_size); | |
72865317 | 1801 | |
e995e3df | 1802 | /* Put ODP flow. */ |
4e022ec0 | 1803 | odp_flow_key_from_flow(buf, flow, flow->in_port.odp_port); |
e995e3df BP |
1804 | upcall->key = buf->data; |
1805 | upcall->key_len = buf->size; | |
d88b629b | 1806 | |
e995e3df BP |
1807 | /* Put userdata. */ |
1808 | if (userdata) { | |
1809 | upcall->userdata = ofpbuf_put(buf, userdata, | |
1810 | NLA_ALIGN(userdata->nla_len)); | |
1811 | } | |
856081f6 | 1812 | |
da546e07 JR |
1813 | /* Steal packet data. */ |
1814 | ovs_assert(packet->source == OFPBUF_MALLOC); | |
1815 | upcall->packet = *packet; | |
1816 | ofpbuf_use(packet, NULL, 0); | |
856081f6 | 1817 | |
d33ed218 BP |
1818 | seq_change(dp->queue_seq); |
1819 | ||
f5126b57 | 1820 | error = 0; |
e995e3df | 1821 | } else { |
51852a57 | 1822 | dp_netdev_count_packet(dp, DP_STAT_LOST); |
f5126b57 | 1823 | error = ENOBUFS; |
e995e3df | 1824 | } |
f5126b57 BP |
1825 | ovs_mutex_unlock(&dp->queue_mutex); |
1826 | ||
1827 | return error; | |
72865317 BP |
1828 | } |
1829 | ||
9080a111 JR |
1830 | struct dp_netdev_execute_aux { |
1831 | struct dp_netdev *dp; | |
1832 | const struct flow *key; | |
1833 | }; | |
1834 | ||
1835 | static void | |
758c456d JR |
1836 | dp_execute_cb(void *aux_, struct ofpbuf *packet, |
1837 | const struct pkt_metadata *md OVS_UNUSED, | |
09f9da0b | 1838 | const struct nlattr *a, bool may_steal) |
8a4e3a85 | 1839 | OVS_NO_THREAD_SAFETY_ANALYSIS |
9080a111 JR |
1840 | { |
1841 | struct dp_netdev_execute_aux *aux = aux_; | |
09f9da0b | 1842 | int type = nl_attr_type(a); |
8a4e3a85 | 1843 | struct dp_netdev_port *p; |
9080a111 | 1844 | |
09f9da0b JR |
1845 | switch ((enum ovs_action_attr)type) { |
1846 | case OVS_ACTION_ATTR_OUTPUT: | |
8a4e3a85 BP |
1847 | p = dp_netdev_lookup_port(aux->dp, u32_to_odp(nl_attr_get_u32(a))); |
1848 | if (p) { | |
1849 | netdev_send(p->netdev, packet); | |
1850 | } | |
09f9da0b JR |
1851 | break; |
1852 | ||
1853 | case OVS_ACTION_ATTR_USERSPACE: { | |
1854 | const struct nlattr *userdata; | |
4fc65926 | 1855 | |
09f9da0b | 1856 | userdata = nl_attr_find_nested(a, OVS_USERSPACE_ATTR_USERDATA); |
da546e07 | 1857 | |
09f9da0b JR |
1858 | /* Make a copy if we are not allowed to steal the packet's data. */ |
1859 | if (!may_steal) { | |
1860 | packet = ofpbuf_clone_with_headroom(packet, DP_NETDEV_HEADROOM); | |
1861 | } | |
1862 | dp_netdev_output_userspace(aux->dp, packet, DPIF_UC_ACTION, aux->key, | |
1863 | userdata); | |
1864 | if (!may_steal) { | |
1865 | ofpbuf_uninit(packet); | |
1866 | } | |
1867 | break; | |
da546e07 | 1868 | } |
09f9da0b JR |
1869 | case OVS_ACTION_ATTR_PUSH_VLAN: |
1870 | case OVS_ACTION_ATTR_POP_VLAN: | |
1871 | case OVS_ACTION_ATTR_PUSH_MPLS: | |
1872 | case OVS_ACTION_ATTR_POP_MPLS: | |
1873 | case OVS_ACTION_ATTR_SET: | |
1874 | case OVS_ACTION_ATTR_SAMPLE: | |
1875 | case OVS_ACTION_ATTR_UNSPEC: | |
1876 | case __OVS_ACTION_ATTR_MAX: | |
1877 | OVS_NOT_REACHED(); | |
da546e07 | 1878 | } |
98403001 BP |
1879 | } |
1880 | ||
4edb9ae9 | 1881 | static void |
9080a111 | 1882 | dp_netdev_execute_actions(struct dp_netdev *dp, const struct flow *key, |
758c456d | 1883 | struct ofpbuf *packet, struct pkt_metadata *md, |
9080a111 | 1884 | const struct nlattr *actions, size_t actions_len) |
8a4e3a85 | 1885 | OVS_REQ_RDLOCK(dp->port_rwlock) |
72865317 | 1886 | { |
9080a111 | 1887 | struct dp_netdev_execute_aux aux = {dp, key}; |
9080a111 | 1888 | |
758c456d | 1889 | odp_execute_actions(&aux, packet, md, actions, actions_len, dp_execute_cb); |
72865317 BP |
1890 | } |
1891 | ||
1892 | const struct dpif_class dpif_netdev_class = { | |
72865317 | 1893 | "netdev", |
2197d7ab | 1894 | dpif_netdev_enumerate, |
0aeaabc8 | 1895 | dpif_netdev_port_open_type, |
72865317 BP |
1896 | dpif_netdev_open, |
1897 | dpif_netdev_close, | |
7dab847a | 1898 | dpif_netdev_destroy, |
6c3eee82 BP |
1899 | NULL, /* run */ |
1900 | NULL, /* wait */ | |
72865317 | 1901 | dpif_netdev_get_stats, |
72865317 BP |
1902 | dpif_netdev_port_add, |
1903 | dpif_netdev_port_del, | |
1904 | dpif_netdev_port_query_by_number, | |
1905 | dpif_netdev_port_query_by_name, | |
98403001 | 1906 | NULL, /* port_get_pid */ |
b0ec0f27 BP |
1907 | dpif_netdev_port_dump_start, |
1908 | dpif_netdev_port_dump_next, | |
1909 | dpif_netdev_port_dump_done, | |
72865317 BP |
1910 | dpif_netdev_port_poll, |
1911 | dpif_netdev_port_poll_wait, | |
72865317 BP |
1912 | dpif_netdev_flow_get, |
1913 | dpif_netdev_flow_put, | |
1914 | dpif_netdev_flow_del, | |
1915 | dpif_netdev_flow_flush, | |
e723fd32 | 1916 | dpif_netdev_flow_dump_state_init, |
704a1e09 BP |
1917 | dpif_netdev_flow_dump_start, |
1918 | dpif_netdev_flow_dump_next, | |
bdeadfdd | 1919 | NULL, |
704a1e09 | 1920 | dpif_netdev_flow_dump_done, |
e723fd32 | 1921 | dpif_netdev_flow_dump_state_uninit, |
72865317 | 1922 | dpif_netdev_execute, |
6bc60024 | 1923 | NULL, /* operate */ |
a12b3ead | 1924 | dpif_netdev_recv_set, |
5bf93d67 | 1925 | dpif_netdev_queue_to_priority, |
72865317 BP |
1926 | dpif_netdev_recv, |
1927 | dpif_netdev_recv_wait, | |
1ba530f4 | 1928 | dpif_netdev_recv_purge, |
72865317 | 1929 | }; |
614c4892 | 1930 | |
74cc3969 BP |
1931 | static void |
1932 | dpif_dummy_change_port_number(struct unixctl_conn *conn, int argc OVS_UNUSED, | |
1933 | const char *argv[], void *aux OVS_UNUSED) | |
1934 | { | |
1935 | struct dp_netdev_port *port; | |
1936 | struct dp_netdev *dp; | |
ff073a71 | 1937 | odp_port_t port_no; |
74cc3969 | 1938 | |
8a4e3a85 | 1939 | ovs_mutex_lock(&dp_netdev_mutex); |
74cc3969 BP |
1940 | dp = shash_find_data(&dp_netdevs, argv[1]); |
1941 | if (!dp || !dpif_netdev_class_is_dummy(dp->class)) { | |
8a4e3a85 | 1942 | ovs_mutex_unlock(&dp_netdev_mutex); |
74cc3969 BP |
1943 | unixctl_command_reply_error(conn, "unknown datapath or not a dummy"); |
1944 | return; | |
1945 | } | |
8a4e3a85 BP |
1946 | ovs_refcount_ref(&dp->ref_cnt); |
1947 | ovs_mutex_unlock(&dp_netdev_mutex); | |
74cc3969 | 1948 | |
8a4e3a85 | 1949 | ovs_rwlock_wrlock(&dp->port_rwlock); |
74cc3969 BP |
1950 | if (get_port_by_name(dp, argv[2], &port)) { |
1951 | unixctl_command_reply_error(conn, "unknown port"); | |
8a4e3a85 | 1952 | goto exit; |
74cc3969 BP |
1953 | } |
1954 | ||
ff073a71 BP |
1955 | port_no = u32_to_odp(atoi(argv[3])); |
1956 | if (!port_no || port_no == ODPP_NONE) { | |
74cc3969 | 1957 | unixctl_command_reply_error(conn, "bad port number"); |
8a4e3a85 | 1958 | goto exit; |
74cc3969 | 1959 | } |
ff073a71 | 1960 | if (dp_netdev_lookup_port(dp, port_no)) { |
74cc3969 | 1961 | unixctl_command_reply_error(conn, "port number already in use"); |
8a4e3a85 | 1962 | goto exit; |
74cc3969 | 1963 | } |
ff073a71 BP |
1964 | hmap_remove(&dp->ports, &port->node); |
1965 | port->port_no = port_no; | |
1966 | hmap_insert(&dp->ports, &port->node, hash_int(odp_to_u32(port_no), 0)); | |
d33ed218 | 1967 | seq_change(dp->port_seq); |
74cc3969 | 1968 | unixctl_command_reply(conn, NULL); |
8a4e3a85 BP |
1969 | |
1970 | exit: | |
1971 | ovs_rwlock_unlock(&dp->port_rwlock); | |
1972 | dp_netdev_unref(dp); | |
74cc3969 BP |
1973 | } |
1974 | ||
0cbfe35d BP |
1975 | static void |
1976 | dpif_dummy_register__(const char *type) | |
1977 | { | |
1978 | struct dpif_class *class; | |
1979 | ||
1980 | class = xmalloc(sizeof *class); | |
1981 | *class = dpif_netdev_class; | |
1982 | class->type = xstrdup(type); | |
1983 | dp_register_provider(class); | |
1984 | } | |
1985 | ||
614c4892 | 1986 | void |
0cbfe35d | 1987 | dpif_dummy_register(bool override) |
614c4892 | 1988 | { |
0cbfe35d BP |
1989 | if (override) { |
1990 | struct sset types; | |
1991 | const char *type; | |
1992 | ||
1993 | sset_init(&types); | |
1994 | dp_enumerate_types(&types); | |
1995 | SSET_FOR_EACH (type, &types) { | |
1996 | if (!dp_unregister_provider(type)) { | |
1997 | dpif_dummy_register__(type); | |
1998 | } | |
1999 | } | |
2000 | sset_destroy(&types); | |
614c4892 | 2001 | } |
0cbfe35d BP |
2002 | |
2003 | dpif_dummy_register__("dummy"); | |
74cc3969 BP |
2004 | |
2005 | unixctl_command_register("dpif-dummy/change-port-number", | |
2006 | "DP PORT NEW-NUMBER", | |
2007 | 3, 3, dpif_dummy_change_port_number, NULL); | |
614c4892 | 2008 | } |