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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" | |
52 | #include "packets.h" | |
53 | #include "poll-loop.h" | |
26c6b6cd | 54 | #include "random.h" |
d33ed218 | 55 | #include "seq.h" |
462278db | 56 | #include "shash.h" |
0cbfe35d | 57 | #include "sset.h" |
72865317 | 58 | #include "timeval.h" |
74cc3969 | 59 | #include "unixctl.h" |
72865317 | 60 | #include "util.h" |
72865317 | 61 | #include "vlog.h" |
5136ce49 | 62 | |
d98e6007 | 63 | VLOG_DEFINE_THIS_MODULE(dpif_netdev); |
72865317 | 64 | |
2c0ea78f GS |
65 | /* By default, choose a priority in the middle. */ |
66 | #define NETDEV_RULE_PRIORITY 0x8000 | |
67 | ||
72865317 | 68 | /* Configuration parameters. */ |
72865317 BP |
69 | enum { MAX_FLOWS = 65536 }; /* Maximum number of flows in flow table. */ |
70 | ||
71 | /* Enough headroom to add a vlan tag, plus an extra 2 bytes to allow IP | |
72 | * headers to be aligned on a 4-byte boundary. */ | |
73 | enum { DP_NETDEV_HEADROOM = 2 + VLAN_HEADER_LEN }; | |
74 | ||
856081f6 BP |
75 | /* Queues. */ |
76 | enum { N_QUEUES = 2 }; /* Number of queues for dpif_recv(). */ | |
77 | enum { MAX_QUEUE_LEN = 128 }; /* Maximum number of packets per queue. */ | |
78 | enum { QUEUE_MASK = MAX_QUEUE_LEN - 1 }; | |
79 | BUILD_ASSERT_DECL(IS_POW2(MAX_QUEUE_LEN)); | |
80 | ||
8a4e3a85 BP |
81 | /* Protects against changes to 'dp_netdevs'. */ |
82 | static struct ovs_mutex dp_netdev_mutex = OVS_MUTEX_INITIALIZER; | |
83 | ||
84 | /* Contains all 'struct dp_netdev's. */ | |
85 | static struct shash dp_netdevs OVS_GUARDED_BY(dp_netdev_mutex) | |
86 | = SHASH_INITIALIZER(&dp_netdevs); | |
87 | ||
d88b629b BP |
88 | struct dp_netdev_upcall { |
89 | struct dpif_upcall upcall; /* Queued upcall information. */ | |
90 | struct ofpbuf buf; /* ofpbuf instance for upcall.packet. */ | |
91 | }; | |
92 | ||
8a4e3a85 BP |
93 | /* A queue passing packets from a struct dp_netdev to its clients. |
94 | * | |
95 | * | |
96 | * Thread-safety | |
97 | * ============= | |
98 | * | |
99 | * Any access at all requires the owning 'dp_netdev''s queue_mutex. */ | |
856081f6 | 100 | struct dp_netdev_queue { |
f5126b57 BP |
101 | struct dp_netdev_upcall upcalls[MAX_QUEUE_LEN] OVS_GUARDED; |
102 | unsigned int head OVS_GUARDED; | |
103 | unsigned int tail OVS_GUARDED; | |
856081f6 BP |
104 | }; |
105 | ||
8a4e3a85 BP |
106 | /* Datapath based on the network device interface from netdev.h. |
107 | * | |
108 | * | |
109 | * Thread-safety | |
110 | * ============= | |
111 | * | |
112 | * Some members, marked 'const', are immutable. Accessing other members | |
113 | * requires synchronization, as noted in more detail below. | |
114 | * | |
115 | * Acquisition order is, from outermost to innermost: | |
116 | * | |
117 | * dp_netdev_mutex (global) | |
118 | * port_rwlock | |
119 | * flow_mutex | |
120 | * cls.rwlock | |
121 | * queue_mutex | |
122 | */ | |
72865317 | 123 | struct dp_netdev { |
8a4e3a85 BP |
124 | const struct dpif_class *const class; |
125 | const char *const name; | |
6a8267c5 BP |
126 | struct ovs_refcount ref_cnt; |
127 | atomic_flag destroyed; | |
72865317 | 128 | |
8a4e3a85 BP |
129 | /* Flows. |
130 | * | |
131 | * Readers of 'cls' and 'flow_table' must take a 'cls->rwlock' read lock. | |
132 | * | |
133 | * Writers of 'cls' and 'flow_table' must take the 'flow_mutex' and then | |
134 | * the 'cls->rwlock' write lock. (The outer 'flow_mutex' allows writers to | |
135 | * atomically perform multiple operations on 'cls' and 'flow_table'.) | |
136 | */ | |
137 | struct ovs_mutex flow_mutex; | |
138 | struct classifier cls; /* Classifier. Protected by cls.rwlock. */ | |
139 | struct hmap flow_table OVS_GUARDED; /* Flow table. */ | |
140 | ||
141 | /* Queues. | |
142 | * | |
143 | * Everything in 'queues' is protected by 'queue_mutex'. */ | |
f5126b57 BP |
144 | struct ovs_mutex queue_mutex; |
145 | struct dp_netdev_queue queues[N_QUEUES]; | |
d33ed218 | 146 | struct seq *queue_seq; /* Incremented whenever a packet is queued. */ |
72865317 | 147 | |
8a4e3a85 BP |
148 | /* Statistics. |
149 | * | |
51852a57 BP |
150 | * ovsthread_stats is internally synchronized. */ |
151 | struct ovsthread_stats stats; /* Contains 'struct dp_netdev_stats *'. */ | |
72865317 | 152 | |
8a4e3a85 BP |
153 | /* Ports. |
154 | * | |
155 | * Any lookup into 'ports' or any access to the dp_netdev_ports found | |
156 | * through 'ports' requires taking 'port_rwlock'. */ | |
157 | struct ovs_rwlock port_rwlock; | |
158 | struct hmap ports OVS_GUARDED; | |
d33ed218 | 159 | struct seq *port_seq; /* Incremented whenever a port changes. */ |
6c3eee82 BP |
160 | |
161 | /* Forwarding threads. */ | |
162 | struct latch exit_latch; | |
163 | struct dp_forwarder *forwarders; | |
164 | size_t n_forwarders; | |
72865317 BP |
165 | }; |
166 | ||
8a4e3a85 BP |
167 | static struct dp_netdev_port *dp_netdev_lookup_port(const struct dp_netdev *dp, |
168 | odp_port_t) | |
169 | OVS_REQ_RDLOCK(dp->port_rwlock); | |
ff073a71 | 170 | |
51852a57 BP |
171 | enum dp_stat_type { |
172 | DP_STAT_HIT, /* Packets that matched in the flow table. */ | |
173 | DP_STAT_MISS, /* Packets that did not match. */ | |
174 | DP_STAT_LOST, /* Packets not passed up to the client. */ | |
175 | DP_N_STATS | |
176 | }; | |
177 | ||
178 | /* Contained by struct dp_netdev's 'stats' member. */ | |
179 | struct dp_netdev_stats { | |
180 | struct ovs_mutex mutex; /* Protects 'n'. */ | |
181 | ||
182 | /* Indexed by DP_STAT_*, protected by 'mutex'. */ | |
183 | unsigned long long int n[DP_N_STATS] OVS_GUARDED; | |
184 | }; | |
185 | ||
186 | ||
72865317 BP |
187 | /* A port in a netdev-based datapath. */ |
188 | struct dp_netdev_port { | |
ff073a71 BP |
189 | struct hmap_node node; /* Node in dp_netdev's 'ports'. */ |
190 | odp_port_t port_no; | |
72865317 | 191 | struct netdev *netdev; |
4b609110 | 192 | struct netdev_saved_flags *sf; |
796223f5 | 193 | struct netdev_rx *rx; |
0cbfe35d | 194 | char *type; /* Port type as requested by user. */ |
72865317 BP |
195 | }; |
196 | ||
8a4e3a85 BP |
197 | /* A flow in dp_netdev's 'flow_table'. |
198 | * | |
199 | * | |
200 | * Thread-safety | |
201 | * ============= | |
202 | * | |
203 | * Except near the beginning or ending of its lifespan, rule 'rule' belongs to | |
204 | * its dp_netdev's classifier. The text below calls this classifier 'cls'. | |
205 | * | |
206 | * Motivation | |
207 | * ---------- | |
208 | * | |
209 | * The thread safety rules described here for "struct dp_netdev_flow" are | |
210 | * motivated by two goals: | |
211 | * | |
212 | * - Prevent threads that read members of "struct dp_netdev_flow" from | |
213 | * reading bad data due to changes by some thread concurrently modifying | |
214 | * those members. | |
215 | * | |
216 | * - Prevent two threads making changes to members of a given "struct | |
217 | * dp_netdev_flow" from interfering with each other. | |
218 | * | |
219 | * | |
220 | * Rules | |
221 | * ----- | |
222 | * | |
223 | * A flow 'flow' may be accessed without a risk of being freed by code that | |
224 | * holds a read-lock or write-lock on 'cls->rwlock' or that owns a reference to | |
225 | * 'flow->ref_cnt' (or both). Code that needs to hold onto a flow for a while | |
226 | * should take 'cls->rwlock', find the flow it needs, increment 'flow->ref_cnt' | |
227 | * with dpif_netdev_flow_ref(), and drop 'cls->rwlock'. | |
228 | * | |
229 | * 'flow->ref_cnt' protects 'flow' from being freed. It doesn't protect the | |
230 | * flow from being deleted from 'cls' (that's 'cls->rwlock') and it doesn't | |
231 | * protect members of 'flow' from modification (that's 'flow->mutex'). | |
232 | * | |
233 | * 'flow->mutex' protects the members of 'flow' from modification. It doesn't | |
234 | * protect the flow from being deleted from 'cls' (that's 'cls->rwlock') and it | |
235 | * doesn't prevent the flow from being freed (that's 'flow->ref_cnt'). | |
236 | * | |
237 | * Some members, marked 'const', are immutable. Accessing other members | |
238 | * requires synchronization, as noted in more detail below. | |
239 | */ | |
72865317 | 240 | struct dp_netdev_flow { |
2c0ea78f | 241 | /* Packet classification. */ |
8a4e3a85 | 242 | const struct cls_rule cr; /* In owning dp_netdev's 'cls'. */ |
2c0ea78f | 243 | |
8a4e3a85 BP |
244 | /* Hash table index by unmasked flow. */ |
245 | const struct hmap_node node; /* In owning dp_netdev's 'flow_table'. */ | |
246 | const struct flow flow; /* The flow that created this entry. */ | |
72865317 | 247 | |
8a4e3a85 BP |
248 | /* Number of references. |
249 | * The classifier owns one reference. | |
250 | * Any thread trying to keep a rule from being freed should hold its own | |
251 | * reference. */ | |
252 | struct ovs_refcount ref_cnt; | |
72865317 | 253 | |
8a4e3a85 BP |
254 | /* Protects members marked OVS_GUARDED. |
255 | * | |
256 | * Acquire after datapath's flow_mutex. */ | |
257 | struct ovs_mutex mutex OVS_ACQ_AFTER(dp_netdev_mutex); | |
258 | ||
259 | /* Statistics. | |
260 | * | |
261 | * Reading or writing these members requires 'mutex'. */ | |
262 | long long int used OVS_GUARDED; /* Last used time, in monotonic msecs. */ | |
263 | long long int packet_count OVS_GUARDED; /* Number of packets matched. */ | |
264 | long long int byte_count OVS_GUARDED; /* Number of bytes matched. */ | |
265 | uint16_t tcp_flags OVS_GUARDED; /* Bitwise-OR of seen tcp_flags values. */ | |
266 | ||
267 | /* Actions. | |
268 | * | |
269 | * Reading 'actions' requires 'mutex'. | |
270 | * Writing 'actions' requires 'mutex' and (to allow for transactions) the | |
271 | * datapath's flow_mutex. */ | |
272 | struct dp_netdev_actions *actions OVS_GUARDED; | |
72865317 BP |
273 | }; |
274 | ||
8a4e3a85 BP |
275 | static struct dp_netdev_flow *dp_netdev_flow_ref( |
276 | const struct dp_netdev_flow *); | |
277 | static void dp_netdev_flow_unref(struct dp_netdev_flow *); | |
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 { | |
290 | struct ovs_refcount ref_cnt; | |
291 | ||
292 | /* These members are immutable: they do not change during the struct's | |
293 | * lifetime. */ | |
294 | struct nlattr *actions; /* Sequence of OVS_ACTION_ATTR_* attributes. */ | |
295 | unsigned int size; /* Size of 'actions', in bytes. */ | |
296 | }; | |
297 | ||
298 | struct dp_netdev_actions *dp_netdev_actions_create(const struct nlattr *, | |
299 | size_t); | |
300 | struct dp_netdev_actions *dp_netdev_actions_ref( | |
301 | const struct dp_netdev_actions *); | |
302 | void dp_netdev_actions_unref(struct dp_netdev_actions *); | |
303 | ||
6c3eee82 BP |
304 | /* A thread that receives packets from some ports, looks them up in the flow |
305 | * table, and executes the actions it finds. */ | |
306 | struct dp_forwarder { | |
307 | struct dp_netdev *dp; | |
308 | pthread_t thread; | |
309 | char *name; | |
310 | uint32_t min_hash, max_hash; | |
311 | }; | |
312 | ||
72865317 BP |
313 | /* Interface to netdev-based datapath. */ |
314 | struct dpif_netdev { | |
315 | struct dpif dpif; | |
316 | struct dp_netdev *dp; | |
d33ed218 | 317 | uint64_t last_port_seq; |
72865317 BP |
318 | }; |
319 | ||
8a4e3a85 BP |
320 | static int get_port_by_number(struct dp_netdev *dp, odp_port_t port_no, |
321 | struct dp_netdev_port **portp) | |
322 | OVS_REQ_RDLOCK(dp->port_rwlock); | |
323 | static int get_port_by_name(struct dp_netdev *dp, const char *devname, | |
324 | struct dp_netdev_port **portp) | |
325 | OVS_REQ_RDLOCK(dp->port_rwlock); | |
326 | static void dp_netdev_free(struct dp_netdev *) | |
327 | OVS_REQUIRES(dp_netdev_mutex); | |
72865317 | 328 | static void dp_netdev_flow_flush(struct dp_netdev *); |
8a4e3a85 BP |
329 | static int do_add_port(struct dp_netdev *dp, const char *devname, |
330 | const char *type, odp_port_t port_no) | |
331 | OVS_REQ_WRLOCK(dp->port_rwlock); | |
332 | static int do_del_port(struct dp_netdev *dp, odp_port_t port_no) | |
333 | OVS_REQ_WRLOCK(dp->port_rwlock); | |
614c4892 BP |
334 | static int dpif_netdev_open(const struct dpif_class *, const char *name, |
335 | bool create, struct dpif **); | |
f5126b57 | 336 | static int dp_netdev_output_userspace(struct dp_netdev *dp, struct ofpbuf *, |
856081f6 | 337 | int queue_no, const struct flow *, |
f5126b57 BP |
338 | const struct nlattr *userdata) |
339 | OVS_EXCLUDED(dp->queue_mutex); | |
8a4e3a85 BP |
340 | static void dp_netdev_execute_actions(struct dp_netdev *dp, |
341 | const struct flow *, struct ofpbuf *, | |
342 | struct pkt_metadata *, | |
4edb9ae9 | 343 | const struct nlattr *actions, |
8a4e3a85 BP |
344 | size_t actions_len) |
345 | OVS_REQ_RDLOCK(dp->port_rwlock); | |
758c456d | 346 | static void dp_netdev_port_input(struct dp_netdev *dp, struct ofpbuf *packet, |
8a4e3a85 BP |
347 | struct pkt_metadata *) |
348 | OVS_REQ_RDLOCK(dp->port_rwlock); | |
6c3eee82 | 349 | static void dp_netdev_set_threads(struct dp_netdev *, int n); |
72865317 BP |
350 | |
351 | static struct dpif_netdev * | |
352 | dpif_netdev_cast(const struct dpif *dpif) | |
353 | { | |
cb22974d | 354 | ovs_assert(dpif->dpif_class->open == dpif_netdev_open); |
72865317 BP |
355 | return CONTAINER_OF(dpif, struct dpif_netdev, dpif); |
356 | } | |
357 | ||
358 | static struct dp_netdev * | |
359 | get_dp_netdev(const struct dpif *dpif) | |
360 | { | |
361 | return dpif_netdev_cast(dpif)->dp; | |
362 | } | |
363 | ||
2197d7ab GL |
364 | static int |
365 | dpif_netdev_enumerate(struct sset *all_dps) | |
366 | { | |
367 | struct shash_node *node; | |
368 | ||
97be1538 | 369 | ovs_mutex_lock(&dp_netdev_mutex); |
2197d7ab GL |
370 | SHASH_FOR_EACH(node, &dp_netdevs) { |
371 | sset_add(all_dps, node->name); | |
372 | } | |
97be1538 | 373 | ovs_mutex_unlock(&dp_netdev_mutex); |
5279f8fd | 374 | |
2197d7ab GL |
375 | return 0; |
376 | } | |
377 | ||
add90f6f EJ |
378 | static bool |
379 | dpif_netdev_class_is_dummy(const struct dpif_class *class) | |
380 | { | |
381 | return class != &dpif_netdev_class; | |
382 | } | |
383 | ||
0aeaabc8 JP |
384 | static const char * |
385 | dpif_netdev_port_open_type(const struct dpif_class *class, const char *type) | |
386 | { | |
387 | return strcmp(type, "internal") ? type | |
add90f6f | 388 | : dpif_netdev_class_is_dummy(class) ? "dummy" |
0aeaabc8 JP |
389 | : "tap"; |
390 | } | |
391 | ||
72865317 BP |
392 | static struct dpif * |
393 | create_dpif_netdev(struct dp_netdev *dp) | |
394 | { | |
462278db | 395 | uint16_t netflow_id = hash_string(dp->name, 0); |
72865317 | 396 | struct dpif_netdev *dpif; |
72865317 | 397 | |
6a8267c5 | 398 | ovs_refcount_ref(&dp->ref_cnt); |
72865317 | 399 | |
72865317 | 400 | dpif = xmalloc(sizeof *dpif); |
614c4892 | 401 | dpif_init(&dpif->dpif, dp->class, dp->name, netflow_id >> 8, netflow_id); |
72865317 | 402 | dpif->dp = dp; |
d33ed218 | 403 | dpif->last_port_seq = seq_read(dp->port_seq); |
72865317 BP |
404 | |
405 | return &dpif->dpif; | |
406 | } | |
407 | ||
4e022ec0 AW |
408 | /* Choose an unused, non-zero port number and return it on success. |
409 | * Return ODPP_NONE on failure. */ | |
410 | static odp_port_t | |
e44768b7 | 411 | choose_port(struct dp_netdev *dp, const char *name) |
8a4e3a85 | 412 | OVS_REQ_RDLOCK(dp->port_rwlock) |
e44768b7 | 413 | { |
4e022ec0 | 414 | uint32_t port_no; |
e44768b7 JP |
415 | |
416 | if (dp->class != &dpif_netdev_class) { | |
417 | const char *p; | |
418 | int start_no = 0; | |
419 | ||
420 | /* If the port name begins with "br", start the number search at | |
421 | * 100 to make writing tests easier. */ | |
422 | if (!strncmp(name, "br", 2)) { | |
423 | start_no = 100; | |
424 | } | |
425 | ||
426 | /* If the port name contains a number, try to assign that port number. | |
427 | * This can make writing unit tests easier because port numbers are | |
428 | * predictable. */ | |
429 | for (p = name; *p != '\0'; p++) { | |
430 | if (isdigit((unsigned char) *p)) { | |
431 | port_no = start_no + strtol(p, NULL, 10); | |
ff073a71 BP |
432 | if (port_no > 0 && port_no != odp_to_u32(ODPP_NONE) |
433 | && !dp_netdev_lookup_port(dp, u32_to_odp(port_no))) { | |
4e022ec0 | 434 | return u32_to_odp(port_no); |
e44768b7 JP |
435 | } |
436 | break; | |
437 | } | |
438 | } | |
439 | } | |
440 | ||
ff073a71 BP |
441 | for (port_no = 1; port_no <= UINT16_MAX; port_no++) { |
442 | if (!dp_netdev_lookup_port(dp, u32_to_odp(port_no))) { | |
4e022ec0 | 443 | return u32_to_odp(port_no); |
e44768b7 JP |
444 | } |
445 | } | |
446 | ||
4e022ec0 | 447 | return ODPP_NONE; |
e44768b7 JP |
448 | } |
449 | ||
72865317 | 450 | static int |
614c4892 BP |
451 | create_dp_netdev(const char *name, const struct dpif_class *class, |
452 | struct dp_netdev **dpp) | |
8a4e3a85 | 453 | OVS_REQUIRES(dp_netdev_mutex) |
72865317 BP |
454 | { |
455 | struct dp_netdev *dp; | |
456 | int error; | |
457 | int i; | |
458 | ||
462278db | 459 | dp = xzalloc(sizeof *dp); |
8a4e3a85 BP |
460 | shash_add(&dp_netdevs, name, dp); |
461 | ||
462 | *CONST_CAST(const struct dpif_class **, &dp->class) = class; | |
463 | *CONST_CAST(const char **, &dp->name) = xstrdup(name); | |
6a8267c5 | 464 | ovs_refcount_init(&dp->ref_cnt); |
1a65ba85 | 465 | atomic_flag_clear(&dp->destroyed); |
8a4e3a85 BP |
466 | |
467 | ovs_mutex_init(&dp->flow_mutex); | |
468 | classifier_init(&dp->cls, NULL); | |
469 | hmap_init(&dp->flow_table); | |
470 | ||
f5126b57 BP |
471 | ovs_mutex_init(&dp->queue_mutex); |
472 | ovs_mutex_lock(&dp->queue_mutex); | |
72865317 | 473 | for (i = 0; i < N_QUEUES; i++) { |
856081f6 | 474 | dp->queues[i].head = dp->queues[i].tail = 0; |
72865317 | 475 | } |
f5126b57 | 476 | ovs_mutex_unlock(&dp->queue_mutex); |
d33ed218 | 477 | dp->queue_seq = seq_create(); |
ed27e010 | 478 | |
51852a57 | 479 | ovsthread_stats_init(&dp->stats); |
ed27e010 | 480 | |
8a4e3a85 | 481 | ovs_rwlock_init(&dp->port_rwlock); |
ff073a71 | 482 | hmap_init(&dp->ports); |
d33ed218 | 483 | dp->port_seq = seq_create(); |
6c3eee82 | 484 | latch_init(&dp->exit_latch); |
e44768b7 | 485 | |
8a4e3a85 | 486 | ovs_rwlock_wrlock(&dp->port_rwlock); |
4e022ec0 | 487 | error = do_add_port(dp, name, "internal", ODPP_LOCAL); |
8a4e3a85 | 488 | ovs_rwlock_unlock(&dp->port_rwlock); |
72865317 BP |
489 | if (error) { |
490 | dp_netdev_free(dp); | |
462278db | 491 | return error; |
72865317 | 492 | } |
6c3eee82 | 493 | dp_netdev_set_threads(dp, 2); |
72865317 | 494 | |
462278db | 495 | *dpp = dp; |
72865317 BP |
496 | return 0; |
497 | } | |
498 | ||
499 | static int | |
614c4892 | 500 | dpif_netdev_open(const struct dpif_class *class, const char *name, |
4a387741 | 501 | bool create, struct dpif **dpifp) |
72865317 | 502 | { |
462278db | 503 | struct dp_netdev *dp; |
5279f8fd | 504 | int error; |
462278db | 505 | |
97be1538 | 506 | ovs_mutex_lock(&dp_netdev_mutex); |
462278db BP |
507 | dp = shash_find_data(&dp_netdevs, name); |
508 | if (!dp) { | |
5279f8fd | 509 | error = create ? create_dp_netdev(name, class, &dp) : ENODEV; |
72865317 | 510 | } else { |
5279f8fd BP |
511 | error = (dp->class != class ? EINVAL |
512 | : create ? EEXIST | |
513 | : 0); | |
514 | } | |
515 | if (!error) { | |
516 | *dpifp = create_dpif_netdev(dp); | |
72865317 | 517 | } |
97be1538 | 518 | ovs_mutex_unlock(&dp_netdev_mutex); |
462278db | 519 | |
5279f8fd | 520 | return error; |
72865317 BP |
521 | } |
522 | ||
523 | static void | |
1ba530f4 | 524 | dp_netdev_purge_queues(struct dp_netdev *dp) |
72865317 BP |
525 | { |
526 | int i; | |
527 | ||
f5126b57 | 528 | ovs_mutex_lock(&dp->queue_mutex); |
72865317 | 529 | for (i = 0; i < N_QUEUES; i++) { |
856081f6 | 530 | struct dp_netdev_queue *q = &dp->queues[i]; |
856081f6 | 531 | |
1ba530f4 | 532 | while (q->tail != q->head) { |
d88b629b | 533 | struct dp_netdev_upcall *u = &q->upcalls[q->tail++ & QUEUE_MASK]; |
da546e07 | 534 | ofpbuf_uninit(&u->upcall.packet); |
d88b629b | 535 | ofpbuf_uninit(&u->buf); |
856081f6 | 536 | } |
72865317 | 537 | } |
f5126b57 | 538 | ovs_mutex_unlock(&dp->queue_mutex); |
1ba530f4 BP |
539 | } |
540 | ||
8a4e3a85 BP |
541 | /* Requires dp_netdev_mutex so that we can't get a new reference to 'dp' |
542 | * through the 'dp_netdevs' shash while freeing 'dp'. */ | |
1ba530f4 BP |
543 | static void |
544 | dp_netdev_free(struct dp_netdev *dp) | |
8a4e3a85 | 545 | OVS_REQUIRES(dp_netdev_mutex) |
1ba530f4 | 546 | { |
4ad28026 | 547 | struct dp_netdev_port *port, *next; |
51852a57 BP |
548 | struct dp_netdev_stats *bucket; |
549 | int i; | |
4ad28026 | 550 | |
8a4e3a85 BP |
551 | shash_find_and_delete(&dp_netdevs, dp->name); |
552 | ||
6c3eee82 BP |
553 | dp_netdev_set_threads(dp, 0); |
554 | free(dp->forwarders); | |
555 | ||
1ba530f4 | 556 | dp_netdev_flow_flush(dp); |
8a4e3a85 | 557 | ovs_rwlock_wrlock(&dp->port_rwlock); |
ff073a71 | 558 | HMAP_FOR_EACH_SAFE (port, next, node, &dp->ports) { |
1ba530f4 BP |
559 | do_del_port(dp, port->port_no); |
560 | } | |
8a4e3a85 | 561 | ovs_rwlock_unlock(&dp->port_rwlock); |
51852a57 BP |
562 | |
563 | OVSTHREAD_STATS_FOR_EACH_BUCKET (bucket, i, &dp->stats) { | |
564 | ovs_mutex_destroy(&bucket->mutex); | |
565 | free_cacheline(bucket); | |
566 | } | |
567 | ovsthread_stats_destroy(&dp->stats); | |
f5126b57 | 568 | |
1ba530f4 | 569 | dp_netdev_purge_queues(dp); |
d33ed218 | 570 | seq_destroy(dp->queue_seq); |
f5126b57 BP |
571 | ovs_mutex_destroy(&dp->queue_mutex); |
572 | ||
2c0ea78f | 573 | classifier_destroy(&dp->cls); |
72865317 | 574 | hmap_destroy(&dp->flow_table); |
8a4e3a85 | 575 | ovs_mutex_destroy(&dp->flow_mutex); |
d33ed218 | 576 | seq_destroy(dp->port_seq); |
ff073a71 | 577 | hmap_destroy(&dp->ports); |
6c3eee82 | 578 | latch_destroy(&dp->exit_latch); |
8a4e3a85 | 579 | free(CONST_CAST(char *, dp->name)); |
72865317 BP |
580 | free(dp); |
581 | } | |
582 | ||
8a4e3a85 BP |
583 | static void |
584 | dp_netdev_unref(struct dp_netdev *dp) | |
585 | { | |
586 | if (dp) { | |
587 | /* Take dp_netdev_mutex so that, if dp->ref_cnt falls to zero, we can't | |
588 | * get a new reference to 'dp' through the 'dp_netdevs' shash. */ | |
589 | ovs_mutex_lock(&dp_netdev_mutex); | |
590 | if (ovs_refcount_unref(&dp->ref_cnt) == 1) { | |
591 | dp_netdev_free(dp); | |
592 | } | |
593 | ovs_mutex_unlock(&dp_netdev_mutex); | |
594 | } | |
595 | } | |
596 | ||
72865317 BP |
597 | static void |
598 | dpif_netdev_close(struct dpif *dpif) | |
599 | { | |
600 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
5279f8fd | 601 | |
8a4e3a85 | 602 | dp_netdev_unref(dp); |
72865317 BP |
603 | free(dpif); |
604 | } | |
605 | ||
606 | static int | |
7dab847a | 607 | dpif_netdev_destroy(struct dpif *dpif) |
72865317 BP |
608 | { |
609 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
5279f8fd | 610 | |
6a8267c5 BP |
611 | if (!atomic_flag_test_and_set(&dp->destroyed)) { |
612 | if (ovs_refcount_unref(&dp->ref_cnt) == 1) { | |
613 | /* Can't happen: 'dpif' still owns a reference to 'dp'. */ | |
614 | OVS_NOT_REACHED(); | |
615 | } | |
616 | } | |
5279f8fd | 617 | |
72865317 BP |
618 | return 0; |
619 | } | |
620 | ||
621 | static int | |
a8d9304d | 622 | dpif_netdev_get_stats(const struct dpif *dpif, struct dpif_dp_stats *stats) |
72865317 BP |
623 | { |
624 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
51852a57 BP |
625 | struct dp_netdev_stats *bucket; |
626 | size_t i; | |
5279f8fd | 627 | |
06f81620 | 628 | fat_rwlock_rdlock(&dp->cls.rwlock); |
f180c2e2 | 629 | stats->n_flows = hmap_count(&dp->flow_table); |
06f81620 | 630 | fat_rwlock_unlock(&dp->cls.rwlock); |
8a4e3a85 | 631 | |
51852a57 BP |
632 | stats->n_hit = stats->n_missed = stats->n_lost = 0; |
633 | OVSTHREAD_STATS_FOR_EACH_BUCKET (bucket, i, &dp->stats) { | |
634 | ovs_mutex_lock(&bucket->mutex); | |
635 | stats->n_hit += bucket->n[DP_STAT_HIT]; | |
636 | stats->n_missed += bucket->n[DP_STAT_MISS]; | |
637 | stats->n_lost += bucket->n[DP_STAT_LOST]; | |
638 | ovs_mutex_unlock(&bucket->mutex); | |
639 | } | |
1ce3fa06 | 640 | stats->n_masks = UINT32_MAX; |
847108dc | 641 | stats->n_mask_hit = UINT64_MAX; |
5279f8fd | 642 | |
72865317 BP |
643 | return 0; |
644 | } | |
645 | ||
72865317 | 646 | static int |
c3827f61 | 647 | do_add_port(struct dp_netdev *dp, const char *devname, const char *type, |
4e022ec0 | 648 | odp_port_t port_no) |
8a4e3a85 | 649 | OVS_REQ_WRLOCK(dp->port_rwlock) |
72865317 | 650 | { |
4b609110 | 651 | struct netdev_saved_flags *sf; |
72865317 BP |
652 | struct dp_netdev_port *port; |
653 | struct netdev *netdev; | |
796223f5 | 654 | struct netdev_rx *rx; |
2499a8ce | 655 | enum netdev_flags flags; |
0cbfe35d | 656 | const char *open_type; |
72865317 BP |
657 | int error; |
658 | ||
659 | /* XXX reject devices already in some dp_netdev. */ | |
660 | ||
661 | /* Open and validate network device. */ | |
0aeaabc8 | 662 | open_type = dpif_netdev_port_open_type(dp->class, type); |
0cbfe35d | 663 | error = netdev_open(devname, open_type, &netdev); |
72865317 BP |
664 | if (error) { |
665 | return error; | |
666 | } | |
72865317 BP |
667 | /* XXX reject non-Ethernet devices */ |
668 | ||
2499a8ce AC |
669 | netdev_get_flags(netdev, &flags); |
670 | if (flags & NETDEV_LOOPBACK) { | |
671 | VLOG_ERR("%s: cannot add a loopback device", devname); | |
672 | netdev_close(netdev); | |
673 | return EINVAL; | |
674 | } | |
675 | ||
796223f5 | 676 | error = netdev_rx_open(netdev, &rx); |
add90f6f EJ |
677 | if (error |
678 | && !(error == EOPNOTSUPP && dpif_netdev_class_is_dummy(dp->class))) { | |
7b6b0ef4 | 679 | VLOG_ERR("%s: cannot receive packets on this network device (%s)", |
10a89ef0 | 680 | devname, ovs_strerror(errno)); |
7b6b0ef4 BP |
681 | netdev_close(netdev); |
682 | return error; | |
683 | } | |
684 | ||
4b609110 | 685 | error = netdev_turn_flags_on(netdev, NETDEV_PROMISC, &sf); |
72865317 | 686 | if (error) { |
796223f5 | 687 | netdev_rx_close(rx); |
72865317 BP |
688 | netdev_close(netdev); |
689 | return error; | |
690 | } | |
691 | ||
692 | port = xmalloc(sizeof *port); | |
693 | port->port_no = port_no; | |
694 | port->netdev = netdev; | |
4b609110 | 695 | port->sf = sf; |
796223f5 | 696 | port->rx = rx; |
0cbfe35d | 697 | port->type = xstrdup(type); |
72865317 | 698 | |
ff073a71 | 699 | hmap_insert(&dp->ports, &port->node, hash_int(odp_to_u32(port_no), 0)); |
d33ed218 | 700 | seq_change(dp->port_seq); |
72865317 BP |
701 | |
702 | return 0; | |
703 | } | |
704 | ||
247527db BP |
705 | static int |
706 | dpif_netdev_port_add(struct dpif *dpif, struct netdev *netdev, | |
4e022ec0 | 707 | odp_port_t *port_nop) |
247527db BP |
708 | { |
709 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
3aa30359 BP |
710 | char namebuf[NETDEV_VPORT_NAME_BUFSIZE]; |
711 | const char *dpif_port; | |
4e022ec0 | 712 | odp_port_t port_no; |
5279f8fd | 713 | int error; |
247527db | 714 | |
8a4e3a85 | 715 | ovs_rwlock_wrlock(&dp->port_rwlock); |
3aa30359 | 716 | dpif_port = netdev_vport_get_dpif_port(netdev, namebuf, sizeof namebuf); |
4e022ec0 | 717 | if (*port_nop != ODPP_NONE) { |
ff073a71 BP |
718 | port_no = *port_nop; |
719 | error = dp_netdev_lookup_port(dp, *port_nop) ? EBUSY : 0; | |
232dfa4a | 720 | } else { |
3aa30359 | 721 | port_no = choose_port(dp, dpif_port); |
5279f8fd | 722 | error = port_no == ODPP_NONE ? EFBIG : 0; |
232dfa4a | 723 | } |
5279f8fd | 724 | if (!error) { |
247527db | 725 | *port_nop = port_no; |
5279f8fd | 726 | error = do_add_port(dp, dpif_port, netdev_get_type(netdev), port_no); |
247527db | 727 | } |
8a4e3a85 | 728 | ovs_rwlock_unlock(&dp->port_rwlock); |
5279f8fd BP |
729 | |
730 | return error; | |
72865317 BP |
731 | } |
732 | ||
733 | static int | |
4e022ec0 | 734 | dpif_netdev_port_del(struct dpif *dpif, odp_port_t port_no) |
72865317 BP |
735 | { |
736 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
5279f8fd BP |
737 | int error; |
738 | ||
8a4e3a85 | 739 | ovs_rwlock_wrlock(&dp->port_rwlock); |
5279f8fd | 740 | error = port_no == ODPP_LOCAL ? EINVAL : do_del_port(dp, port_no); |
8a4e3a85 | 741 | ovs_rwlock_unlock(&dp->port_rwlock); |
5279f8fd BP |
742 | |
743 | return error; | |
72865317 BP |
744 | } |
745 | ||
746 | static bool | |
4e022ec0 | 747 | is_valid_port_number(odp_port_t port_no) |
72865317 | 748 | { |
ff073a71 BP |
749 | return port_no != ODPP_NONE; |
750 | } | |
751 | ||
752 | static struct dp_netdev_port * | |
753 | dp_netdev_lookup_port(const struct dp_netdev *dp, odp_port_t port_no) | |
8a4e3a85 | 754 | OVS_REQ_RDLOCK(dp->port_rwlock) |
ff073a71 BP |
755 | { |
756 | struct dp_netdev_port *port; | |
757 | ||
758 | HMAP_FOR_EACH_IN_BUCKET (port, node, hash_int(odp_to_u32(port_no), 0), | |
759 | &dp->ports) { | |
760 | if (port->port_no == port_no) { | |
761 | return port; | |
762 | } | |
763 | } | |
764 | return NULL; | |
72865317 BP |
765 | } |
766 | ||
767 | static int | |
768 | get_port_by_number(struct dp_netdev *dp, | |
4e022ec0 | 769 | odp_port_t port_no, struct dp_netdev_port **portp) |
8a4e3a85 | 770 | OVS_REQ_RDLOCK(dp->port_rwlock) |
72865317 BP |
771 | { |
772 | if (!is_valid_port_number(port_no)) { | |
773 | *portp = NULL; | |
774 | return EINVAL; | |
775 | } else { | |
ff073a71 | 776 | *portp = dp_netdev_lookup_port(dp, port_no); |
72865317 BP |
777 | return *portp ? 0 : ENOENT; |
778 | } | |
779 | } | |
780 | ||
781 | static int | |
782 | get_port_by_name(struct dp_netdev *dp, | |
783 | const char *devname, struct dp_netdev_port **portp) | |
8a4e3a85 | 784 | OVS_REQ_RDLOCK(dp->port_rwlock) |
72865317 BP |
785 | { |
786 | struct dp_netdev_port *port; | |
787 | ||
ff073a71 | 788 | HMAP_FOR_EACH (port, node, &dp->ports) { |
3efb6063 | 789 | if (!strcmp(netdev_get_name(port->netdev), devname)) { |
72865317 BP |
790 | *portp = port; |
791 | return 0; | |
792 | } | |
793 | } | |
794 | return ENOENT; | |
795 | } | |
796 | ||
797 | static int | |
4e022ec0 | 798 | do_del_port(struct dp_netdev *dp, odp_port_t port_no) |
8a4e3a85 | 799 | OVS_REQ_WRLOCK(dp->port_rwlock) |
72865317 BP |
800 | { |
801 | struct dp_netdev_port *port; | |
802 | int error; | |
803 | ||
804 | error = get_port_by_number(dp, port_no, &port); | |
805 | if (error) { | |
806 | return error; | |
807 | } | |
808 | ||
ff073a71 | 809 | hmap_remove(&dp->ports, &port->node); |
d33ed218 | 810 | seq_change(dp->port_seq); |
72865317 BP |
811 | |
812 | netdev_close(port->netdev); | |
4b609110 | 813 | netdev_restore_flags(port->sf); |
796223f5 | 814 | netdev_rx_close(port->rx); |
0cbfe35d | 815 | free(port->type); |
72865317 BP |
816 | free(port); |
817 | ||
818 | return 0; | |
819 | } | |
820 | ||
821 | static void | |
4c738a8d BP |
822 | answer_port_query(const struct dp_netdev_port *port, |
823 | struct dpif_port *dpif_port) | |
72865317 | 824 | { |
3efb6063 | 825 | dpif_port->name = xstrdup(netdev_get_name(port->netdev)); |
0cbfe35d | 826 | dpif_port->type = xstrdup(port->type); |
4c738a8d | 827 | dpif_port->port_no = port->port_no; |
72865317 BP |
828 | } |
829 | ||
830 | static int | |
4e022ec0 | 831 | dpif_netdev_port_query_by_number(const struct dpif *dpif, odp_port_t port_no, |
4c738a8d | 832 | struct dpif_port *dpif_port) |
72865317 BP |
833 | { |
834 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
835 | struct dp_netdev_port *port; | |
836 | int error; | |
837 | ||
8a4e3a85 | 838 | ovs_rwlock_rdlock(&dp->port_rwlock); |
72865317 | 839 | error = get_port_by_number(dp, port_no, &port); |
4afba28d | 840 | if (!error && dpif_port) { |
4c738a8d | 841 | answer_port_query(port, dpif_port); |
72865317 | 842 | } |
8a4e3a85 | 843 | ovs_rwlock_unlock(&dp->port_rwlock); |
5279f8fd | 844 | |
72865317 BP |
845 | return error; |
846 | } | |
847 | ||
848 | static int | |
849 | dpif_netdev_port_query_by_name(const struct dpif *dpif, const char *devname, | |
4c738a8d | 850 | struct dpif_port *dpif_port) |
72865317 BP |
851 | { |
852 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
853 | struct dp_netdev_port *port; | |
854 | int error; | |
855 | ||
8a4e3a85 | 856 | ovs_rwlock_rdlock(&dp->port_rwlock); |
72865317 | 857 | error = get_port_by_name(dp, devname, &port); |
4afba28d | 858 | if (!error && dpif_port) { |
4c738a8d | 859 | answer_port_query(port, dpif_port); |
72865317 | 860 | } |
8a4e3a85 | 861 | ovs_rwlock_unlock(&dp->port_rwlock); |
5279f8fd | 862 | |
72865317 BP |
863 | return error; |
864 | } | |
865 | ||
866 | static void | |
8a4e3a85 BP |
867 | dp_netdev_remove_flow(struct dp_netdev *dp, struct dp_netdev_flow *flow) |
868 | OVS_REQ_WRLOCK(dp->cls.rwlock) | |
869 | OVS_REQUIRES(dp->flow_mutex) | |
72865317 | 870 | { |
8a4e3a85 BP |
871 | struct cls_rule *cr = CONST_CAST(struct cls_rule *, &flow->cr); |
872 | struct hmap_node *node = CONST_CAST(struct hmap_node *, &flow->node); | |
2c0ea78f | 873 | |
8a4e3a85 BP |
874 | classifier_remove(&dp->cls, cr); |
875 | hmap_remove(&dp->flow_table, node); | |
876 | dp_netdev_flow_unref(flow); | |
877 | } | |
878 | ||
879 | static struct dp_netdev_flow * | |
880 | dp_netdev_flow_ref(const struct dp_netdev_flow *flow_) | |
881 | { | |
882 | struct dp_netdev_flow *flow = CONST_CAST(struct dp_netdev_flow *, flow_); | |
883 | if (flow) { | |
884 | ovs_refcount_ref(&flow->ref_cnt); | |
885 | } | |
886 | return flow; | |
887 | } | |
888 | ||
889 | static void | |
890 | dp_netdev_flow_unref(struct dp_netdev_flow *flow) | |
891 | { | |
892 | if (flow && ovs_refcount_unref(&flow->ref_cnt) == 1) { | |
893 | cls_rule_destroy(CONST_CAST(struct cls_rule *, &flow->cr)); | |
894 | ovs_mutex_lock(&flow->mutex); | |
895 | dp_netdev_actions_unref(flow->actions); | |
896 | ovs_mutex_unlock(&flow->mutex); | |
897 | ovs_mutex_destroy(&flow->mutex); | |
898 | free(flow); | |
899 | } | |
72865317 BP |
900 | } |
901 | ||
902 | static void | |
903 | dp_netdev_flow_flush(struct dp_netdev *dp) | |
904 | { | |
1763b4b8 | 905 | struct dp_netdev_flow *netdev_flow, *next; |
72865317 | 906 | |
8a4e3a85 | 907 | ovs_mutex_lock(&dp->flow_mutex); |
06f81620 | 908 | fat_rwlock_wrlock(&dp->cls.rwlock); |
1763b4b8 | 909 | HMAP_FOR_EACH_SAFE (netdev_flow, next, node, &dp->flow_table) { |
8a4e3a85 | 910 | dp_netdev_remove_flow(dp, netdev_flow); |
72865317 | 911 | } |
06f81620 | 912 | fat_rwlock_unlock(&dp->cls.rwlock); |
8a4e3a85 | 913 | ovs_mutex_unlock(&dp->flow_mutex); |
72865317 BP |
914 | } |
915 | ||
916 | static int | |
917 | dpif_netdev_flow_flush(struct dpif *dpif) | |
918 | { | |
919 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
5279f8fd | 920 | |
72865317 BP |
921 | dp_netdev_flow_flush(dp); |
922 | return 0; | |
923 | } | |
924 | ||
b0ec0f27 | 925 | struct dp_netdev_port_state { |
ff073a71 BP |
926 | uint32_t bucket; |
927 | uint32_t offset; | |
4c738a8d | 928 | char *name; |
b0ec0f27 BP |
929 | }; |
930 | ||
931 | static int | |
932 | dpif_netdev_port_dump_start(const struct dpif *dpif OVS_UNUSED, void **statep) | |
933 | { | |
934 | *statep = xzalloc(sizeof(struct dp_netdev_port_state)); | |
935 | return 0; | |
936 | } | |
937 | ||
72865317 | 938 | static int |
b0ec0f27 | 939 | dpif_netdev_port_dump_next(const struct dpif *dpif, void *state_, |
4c738a8d | 940 | struct dpif_port *dpif_port) |
72865317 | 941 | { |
b0ec0f27 | 942 | struct dp_netdev_port_state *state = state_; |
72865317 | 943 | struct dp_netdev *dp = get_dp_netdev(dpif); |
ff073a71 BP |
944 | struct hmap_node *node; |
945 | int retval; | |
72865317 | 946 | |
8a4e3a85 | 947 | ovs_rwlock_rdlock(&dp->port_rwlock); |
ff073a71 BP |
948 | node = hmap_at_position(&dp->ports, &state->bucket, &state->offset); |
949 | if (node) { | |
950 | struct dp_netdev_port *port; | |
5279f8fd | 951 | |
ff073a71 BP |
952 | port = CONTAINER_OF(node, struct dp_netdev_port, node); |
953 | ||
954 | free(state->name); | |
955 | state->name = xstrdup(netdev_get_name(port->netdev)); | |
956 | dpif_port->name = state->name; | |
957 | dpif_port->type = port->type; | |
958 | dpif_port->port_no = port->port_no; | |
959 | ||
960 | retval = 0; | |
961 | } else { | |
962 | retval = EOF; | |
72865317 | 963 | } |
8a4e3a85 | 964 | ovs_rwlock_unlock(&dp->port_rwlock); |
5279f8fd | 965 | |
ff073a71 | 966 | return retval; |
b0ec0f27 BP |
967 | } |
968 | ||
969 | static int | |
4c738a8d | 970 | dpif_netdev_port_dump_done(const struct dpif *dpif OVS_UNUSED, void *state_) |
b0ec0f27 | 971 | { |
4c738a8d BP |
972 | struct dp_netdev_port_state *state = state_; |
973 | free(state->name); | |
b0ec0f27 BP |
974 | free(state); |
975 | return 0; | |
72865317 BP |
976 | } |
977 | ||
978 | static int | |
67a4917b | 979 | dpif_netdev_port_poll(const struct dpif *dpif_, char **devnamep OVS_UNUSED) |
72865317 BP |
980 | { |
981 | struct dpif_netdev *dpif = dpif_netdev_cast(dpif_); | |
d33ed218 | 982 | uint64_t new_port_seq; |
5279f8fd BP |
983 | int error; |
984 | ||
d33ed218 BP |
985 | new_port_seq = seq_read(dpif->dp->port_seq); |
986 | if (dpif->last_port_seq != new_port_seq) { | |
987 | dpif->last_port_seq = new_port_seq; | |
5279f8fd | 988 | error = ENOBUFS; |
72865317 | 989 | } else { |
5279f8fd | 990 | error = EAGAIN; |
72865317 | 991 | } |
5279f8fd BP |
992 | |
993 | return error; | |
72865317 BP |
994 | } |
995 | ||
996 | static void | |
997 | dpif_netdev_port_poll_wait(const struct dpif *dpif_) | |
998 | { | |
999 | struct dpif_netdev *dpif = dpif_netdev_cast(dpif_); | |
5279f8fd | 1000 | |
d33ed218 | 1001 | seq_wait(dpif->dp->port_seq, dpif->last_port_seq); |
8a4e3a85 BP |
1002 | } |
1003 | ||
1004 | static struct dp_netdev_flow * | |
1005 | dp_netdev_flow_cast(const struct cls_rule *cr) | |
1006 | { | |
1007 | return cr ? CONTAINER_OF(cr, struct dp_netdev_flow, cr) : NULL; | |
72865317 BP |
1008 | } |
1009 | ||
72865317 | 1010 | static struct dp_netdev_flow * |
2c0ea78f | 1011 | dp_netdev_lookup_flow(const struct dp_netdev *dp, const struct flow *flow) |
8a4e3a85 | 1012 | OVS_EXCLUDED(dp->cls.rwlock) |
2c0ea78f | 1013 | { |
8a4e3a85 | 1014 | struct dp_netdev_flow *netdev_flow; |
2c0ea78f | 1015 | |
06f81620 | 1016 | fat_rwlock_rdlock(&dp->cls.rwlock); |
8a4e3a85 BP |
1017 | netdev_flow = dp_netdev_flow_cast(classifier_lookup(&dp->cls, flow, NULL)); |
1018 | dp_netdev_flow_ref(netdev_flow); | |
06f81620 | 1019 | fat_rwlock_unlock(&dp->cls.rwlock); |
2c0ea78f | 1020 | |
8a4e3a85 | 1021 | return netdev_flow; |
2c0ea78f GS |
1022 | } |
1023 | ||
1024 | static struct dp_netdev_flow * | |
1025 | dp_netdev_find_flow(const struct dp_netdev *dp, const struct flow *flow) | |
8a4e3a85 | 1026 | OVS_REQ_RDLOCK(dp->cls.rwlock) |
72865317 | 1027 | { |
1763b4b8 | 1028 | struct dp_netdev_flow *netdev_flow; |
72865317 | 1029 | |
2c0ea78f | 1030 | HMAP_FOR_EACH_WITH_HASH (netdev_flow, node, flow_hash(flow, 0), |
1763b4b8 | 1031 | &dp->flow_table) { |
2c0ea78f | 1032 | if (flow_equal(&netdev_flow->flow, flow)) { |
8a4e3a85 | 1033 | return dp_netdev_flow_ref(netdev_flow); |
72865317 BP |
1034 | } |
1035 | } | |
8a4e3a85 | 1036 | |
72865317 BP |
1037 | return NULL; |
1038 | } | |
1039 | ||
1040 | static void | |
1763b4b8 GS |
1041 | get_dpif_flow_stats(struct dp_netdev_flow *netdev_flow, |
1042 | struct dpif_flow_stats *stats) | |
8a4e3a85 | 1043 | OVS_REQ_RDLOCK(netdev_flow->mutex) |
feebdea2 | 1044 | { |
1763b4b8 GS |
1045 | stats->n_packets = netdev_flow->packet_count; |
1046 | stats->n_bytes = netdev_flow->byte_count; | |
1047 | stats->used = netdev_flow->used; | |
1048 | stats->tcp_flags = netdev_flow->tcp_flags; | |
72865317 BP |
1049 | } |
1050 | ||
36956a7d | 1051 | static int |
8c301900 JR |
1052 | dpif_netdev_mask_from_nlattrs(const struct nlattr *key, uint32_t key_len, |
1053 | const struct nlattr *mask_key, | |
1054 | uint32_t mask_key_len, const struct flow *flow, | |
1055 | struct flow *mask) | |
1056 | { | |
1057 | if (mask_key_len) { | |
80e44883 BP |
1058 | enum odp_key_fitness fitness; |
1059 | ||
1060 | fitness = odp_flow_key_to_mask(mask_key, mask_key_len, mask, flow); | |
1061 | if (fitness) { | |
8c301900 JR |
1062 | /* This should not happen: it indicates that |
1063 | * odp_flow_key_from_mask() and odp_flow_key_to_mask() | |
1064 | * disagree on the acceptable form of a mask. Log the problem | |
1065 | * as an error, with enough details to enable debugging. */ | |
1066 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1067 | ||
1068 | if (!VLOG_DROP_ERR(&rl)) { | |
1069 | struct ds s; | |
1070 | ||
1071 | ds_init(&s); | |
1072 | odp_flow_format(key, key_len, mask_key, mask_key_len, NULL, &s, | |
1073 | true); | |
80e44883 BP |
1074 | VLOG_ERR("internal error parsing flow mask %s (%s)", |
1075 | ds_cstr(&s), odp_key_fitness_to_string(fitness)); | |
8c301900 JR |
1076 | ds_destroy(&s); |
1077 | } | |
1078 | ||
1079 | return EINVAL; | |
1080 | } | |
1081 | /* Force unwildcard the in_port. */ | |
1082 | mask->in_port.odp_port = u32_to_odp(UINT32_MAX); | |
1083 | } else { | |
1084 | enum mf_field_id id; | |
1085 | /* No mask key, unwildcard everything except fields whose | |
1086 | * prerequisities are not met. */ | |
1087 | memset(mask, 0x0, sizeof *mask); | |
1088 | ||
1089 | for (id = 0; id < MFF_N_IDS; ++id) { | |
1090 | /* Skip registers and metadata. */ | |
1091 | if (!(id >= MFF_REG0 && id < MFF_REG0 + FLOW_N_REGS) | |
1092 | && id != MFF_METADATA) { | |
1093 | const struct mf_field *mf = mf_from_id(id); | |
1094 | if (mf_are_prereqs_ok(mf, flow)) { | |
1095 | mf_mask_field(mf, mask); | |
1096 | } | |
1097 | } | |
1098 | } | |
1099 | } | |
1100 | ||
1101 | return 0; | |
1102 | } | |
1103 | ||
1104 | static int | |
1105 | dpif_netdev_flow_from_nlattrs(const struct nlattr *key, uint32_t key_len, | |
1106 | struct flow *flow) | |
36956a7d | 1107 | { |
586ddea5 BP |
1108 | odp_port_t in_port; |
1109 | ||
8c301900 | 1110 | if (odp_flow_key_to_flow(key, key_len, flow)) { |
36956a7d | 1111 | /* This should not happen: it indicates that odp_flow_key_from_flow() |
8c301900 JR |
1112 | * and odp_flow_key_to_flow() disagree on the acceptable form of a |
1113 | * flow. Log the problem as an error, with enough details to enable | |
1114 | * debugging. */ | |
36956a7d BP |
1115 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
1116 | ||
1117 | if (!VLOG_DROP_ERR(&rl)) { | |
1118 | struct ds s; | |
1119 | ||
1120 | ds_init(&s); | |
8c301900 | 1121 | odp_flow_format(key, key_len, NULL, 0, NULL, &s, true); |
36956a7d BP |
1122 | VLOG_ERR("internal error parsing flow key %s", ds_cstr(&s)); |
1123 | ds_destroy(&s); | |
1124 | } | |
1125 | ||
1126 | return EINVAL; | |
1127 | } | |
1128 | ||
586ddea5 BP |
1129 | in_port = flow->in_port.odp_port; |
1130 | if (!is_valid_port_number(in_port) && in_port != ODPP_NONE) { | |
18886b60 BP |
1131 | return EINVAL; |
1132 | } | |
1133 | ||
36956a7d BP |
1134 | return 0; |
1135 | } | |
1136 | ||
72865317 | 1137 | static int |
693c4a01 | 1138 | dpif_netdev_flow_get(const struct dpif *dpif, |
feebdea2 | 1139 | const struct nlattr *nl_key, size_t nl_key_len, |
c97fb132 | 1140 | struct ofpbuf **actionsp, struct dpif_flow_stats *stats) |
72865317 BP |
1141 | { |
1142 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
1763b4b8 | 1143 | struct dp_netdev_flow *netdev_flow; |
bc4a05c6 BP |
1144 | struct flow key; |
1145 | int error; | |
36956a7d | 1146 | |
feebdea2 | 1147 | error = dpif_netdev_flow_from_nlattrs(nl_key, nl_key_len, &key); |
bc4a05c6 BP |
1148 | if (error) { |
1149 | return error; | |
1150 | } | |
14608a15 | 1151 | |
06f81620 | 1152 | fat_rwlock_rdlock(&dp->cls.rwlock); |
2c0ea78f | 1153 | netdev_flow = dp_netdev_find_flow(dp, &key); |
06f81620 | 1154 | fat_rwlock_unlock(&dp->cls.rwlock); |
8a4e3a85 | 1155 | |
1763b4b8 | 1156 | if (netdev_flow) { |
8a4e3a85 BP |
1157 | struct dp_netdev_actions *actions = NULL; |
1158 | ||
1159 | ovs_mutex_lock(&netdev_flow->mutex); | |
5279f8fd | 1160 | if (stats) { |
1763b4b8 | 1161 | get_dpif_flow_stats(netdev_flow, stats); |
5279f8fd BP |
1162 | } |
1163 | if (actionsp) { | |
8a4e3a85 BP |
1164 | actions = dp_netdev_actions_ref(netdev_flow->actions); |
1165 | } | |
1166 | ovs_mutex_unlock(&netdev_flow->mutex); | |
1167 | ||
1168 | dp_netdev_flow_unref(netdev_flow); | |
1169 | ||
1170 | if (actionsp) { | |
1171 | *actionsp = ofpbuf_clone_data(actions->actions, actions->size); | |
1172 | dp_netdev_actions_unref(actions); | |
5279f8fd BP |
1173 | } |
1174 | } else { | |
1175 | error = ENOENT; | |
72865317 | 1176 | } |
bc4a05c6 | 1177 | |
5279f8fd | 1178 | return error; |
72865317 BP |
1179 | } |
1180 | ||
72865317 | 1181 | static int |
2c0ea78f GS |
1182 | dp_netdev_flow_add(struct dp_netdev *dp, const struct flow *flow, |
1183 | const struct flow_wildcards *wc, | |
1184 | const struct nlattr *actions, | |
1185 | size_t actions_len) | |
8a4e3a85 | 1186 | OVS_REQUIRES(dp->flow_mutex) |
72865317 | 1187 | { |
1763b4b8 | 1188 | struct dp_netdev_flow *netdev_flow; |
2c0ea78f | 1189 | struct match match; |
72865317 | 1190 | |
1763b4b8 | 1191 | netdev_flow = xzalloc(sizeof *netdev_flow); |
8a4e3a85 BP |
1192 | *CONST_CAST(struct flow *, &netdev_flow->flow) = *flow; |
1193 | ovs_refcount_init(&netdev_flow->ref_cnt); | |
1194 | ||
1195 | ovs_mutex_init(&netdev_flow->mutex); | |
1196 | ovs_mutex_lock(&netdev_flow->mutex); | |
1197 | ||
a84cb64a | 1198 | netdev_flow->actions = dp_netdev_actions_create(actions, actions_len); |
2c0ea78f GS |
1199 | |
1200 | match_init(&match, flow, wc); | |
8a4e3a85 BP |
1201 | cls_rule_init(CONST_CAST(struct cls_rule *, &netdev_flow->cr), |
1202 | &match, NETDEV_RULE_PRIORITY); | |
06f81620 | 1203 | fat_rwlock_wrlock(&dp->cls.rwlock); |
8a4e3a85 BP |
1204 | classifier_insert(&dp->cls, |
1205 | CONST_CAST(struct cls_rule *, &netdev_flow->cr)); | |
1206 | hmap_insert(&dp->flow_table, | |
1207 | CONST_CAST(struct hmap_node *, &netdev_flow->node), | |
1208 | flow_hash(flow, 0)); | |
06f81620 | 1209 | fat_rwlock_unlock(&dp->cls.rwlock); |
72865317 | 1210 | |
8a4e3a85 BP |
1211 | ovs_mutex_unlock(&netdev_flow->mutex); |
1212 | ||
72865317 BP |
1213 | return 0; |
1214 | } | |
1215 | ||
1216 | static void | |
1763b4b8 | 1217 | clear_stats(struct dp_netdev_flow *netdev_flow) |
8a4e3a85 | 1218 | OVS_REQUIRES(netdev_flow->mutex) |
72865317 | 1219 | { |
1763b4b8 GS |
1220 | netdev_flow->used = 0; |
1221 | netdev_flow->packet_count = 0; | |
1222 | netdev_flow->byte_count = 0; | |
1223 | netdev_flow->tcp_flags = 0; | |
72865317 BP |
1224 | } |
1225 | ||
1226 | static int | |
89625d1e | 1227 | dpif_netdev_flow_put(struct dpif *dpif, const struct dpif_flow_put *put) |
72865317 BP |
1228 | { |
1229 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
1763b4b8 | 1230 | struct dp_netdev_flow *netdev_flow; |
2c0ea78f GS |
1231 | struct flow flow; |
1232 | struct flow_wildcards wc; | |
36956a7d BP |
1233 | int error; |
1234 | ||
8c301900 JR |
1235 | error = dpif_netdev_flow_from_nlattrs(put->key, put->key_len, &flow); |
1236 | if (error) { | |
1237 | return error; | |
1238 | } | |
1239 | error = dpif_netdev_mask_from_nlattrs(put->key, put->key_len, | |
1240 | put->mask, put->mask_len, | |
1241 | &flow, &wc.masks); | |
36956a7d BP |
1242 | if (error) { |
1243 | return error; | |
1244 | } | |
72865317 | 1245 | |
8a4e3a85 | 1246 | ovs_mutex_lock(&dp->flow_mutex); |
2c0ea78f | 1247 | netdev_flow = dp_netdev_lookup_flow(dp, &flow); |
1763b4b8 | 1248 | if (!netdev_flow) { |
89625d1e | 1249 | if (put->flags & DPIF_FP_CREATE) { |
72865317 | 1250 | if (hmap_count(&dp->flow_table) < MAX_FLOWS) { |
89625d1e BP |
1251 | if (put->stats) { |
1252 | memset(put->stats, 0, sizeof *put->stats); | |
feebdea2 | 1253 | } |
2c0ea78f | 1254 | error = dp_netdev_flow_add(dp, &flow, &wc, put->actions, |
5279f8fd | 1255 | put->actions_len); |
72865317 | 1256 | } else { |
5279f8fd | 1257 | error = EFBIG; |
72865317 BP |
1258 | } |
1259 | } else { | |
5279f8fd | 1260 | error = ENOENT; |
72865317 BP |
1261 | } |
1262 | } else { | |
2c0ea78f GS |
1263 | if (put->flags & DPIF_FP_MODIFY |
1264 | && flow_equal(&flow, &netdev_flow->flow)) { | |
8a4e3a85 BP |
1265 | struct dp_netdev_actions *new_actions; |
1266 | struct dp_netdev_actions *old_actions; | |
1267 | ||
1268 | new_actions = dp_netdev_actions_create(put->actions, | |
1269 | put->actions_len); | |
1270 | ||
1271 | ovs_mutex_lock(&netdev_flow->mutex); | |
1272 | old_actions = netdev_flow->actions; | |
1273 | netdev_flow->actions = new_actions; | |
a84cb64a BP |
1274 | if (put->stats) { |
1275 | get_dpif_flow_stats(netdev_flow, put->stats); | |
1276 | } | |
1277 | if (put->flags & DPIF_FP_ZERO_STATS) { | |
1278 | clear_stats(netdev_flow); | |
72865317 | 1279 | } |
8a4e3a85 BP |
1280 | ovs_mutex_unlock(&netdev_flow->mutex); |
1281 | ||
1282 | dp_netdev_actions_unref(old_actions); | |
2c0ea78f | 1283 | } else if (put->flags & DPIF_FP_CREATE) { |
5279f8fd | 1284 | error = EEXIST; |
2c0ea78f GS |
1285 | } else { |
1286 | /* Overlapping flow. */ | |
1287 | error = EINVAL; | |
72865317 | 1288 | } |
8a4e3a85 | 1289 | dp_netdev_flow_unref(netdev_flow); |
72865317 | 1290 | } |
8a4e3a85 | 1291 | ovs_mutex_unlock(&dp->flow_mutex); |
5279f8fd BP |
1292 | |
1293 | return error; | |
72865317 BP |
1294 | } |
1295 | ||
72865317 | 1296 | static int |
b99d3cee | 1297 | dpif_netdev_flow_del(struct dpif *dpif, const struct dpif_flow_del *del) |
72865317 BP |
1298 | { |
1299 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
1763b4b8 | 1300 | struct dp_netdev_flow *netdev_flow; |
14608a15 | 1301 | struct flow key; |
36956a7d BP |
1302 | int error; |
1303 | ||
b99d3cee | 1304 | error = dpif_netdev_flow_from_nlattrs(del->key, del->key_len, &key); |
36956a7d BP |
1305 | if (error) { |
1306 | return error; | |
1307 | } | |
72865317 | 1308 | |
8a4e3a85 | 1309 | ovs_mutex_lock(&dp->flow_mutex); |
06f81620 | 1310 | fat_rwlock_wrlock(&dp->cls.rwlock); |
2c0ea78f | 1311 | netdev_flow = dp_netdev_find_flow(dp, &key); |
1763b4b8 | 1312 | if (netdev_flow) { |
b99d3cee | 1313 | if (del->stats) { |
8a4e3a85 | 1314 | ovs_mutex_lock(&netdev_flow->mutex); |
1763b4b8 | 1315 | get_dpif_flow_stats(netdev_flow, del->stats); |
8a4e3a85 | 1316 | ovs_mutex_unlock(&netdev_flow->mutex); |
feebdea2 | 1317 | } |
8a4e3a85 | 1318 | dp_netdev_remove_flow(dp, netdev_flow); |
71c24bb0 | 1319 | dp_netdev_flow_unref(netdev_flow); |
72865317 | 1320 | } else { |
5279f8fd | 1321 | error = ENOENT; |
72865317 | 1322 | } |
06f81620 | 1323 | fat_rwlock_unlock(&dp->cls.rwlock); |
8a4e3a85 | 1324 | ovs_mutex_unlock(&dp->flow_mutex); |
5279f8fd BP |
1325 | |
1326 | return error; | |
72865317 BP |
1327 | } |
1328 | ||
704a1e09 | 1329 | struct dp_netdev_flow_state { |
a84cb64a | 1330 | struct dp_netdev_actions *actions; |
19cf4069 | 1331 | struct odputil_keybuf keybuf; |
2c0ea78f | 1332 | struct odputil_keybuf maskbuf; |
c97fb132 | 1333 | struct dpif_flow_stats stats; |
704a1e09 BP |
1334 | }; |
1335 | ||
e723fd32 JS |
1336 | struct dp_netdev_flow_iter { |
1337 | uint32_t bucket; | |
1338 | uint32_t offset; | |
d2ad7ef1 JS |
1339 | int status; |
1340 | struct ovs_mutex mutex; | |
e723fd32 JS |
1341 | }; |
1342 | ||
1343 | static void | |
1344 | dpif_netdev_flow_dump_state_init(void **statep) | |
72865317 | 1345 | { |
feebdea2 BP |
1346 | struct dp_netdev_flow_state *state; |
1347 | ||
1348 | *statep = state = xmalloc(sizeof *state); | |
feebdea2 | 1349 | state->actions = NULL; |
e723fd32 JS |
1350 | } |
1351 | ||
1352 | static void | |
1353 | dpif_netdev_flow_dump_state_uninit(void *state_) | |
1354 | { | |
1355 | struct dp_netdev_flow_state *state = state_; | |
1356 | ||
1357 | dp_netdev_actions_unref(state->actions); | |
1358 | free(state); | |
1359 | } | |
1360 | ||
1361 | static int | |
1362 | dpif_netdev_flow_dump_start(const struct dpif *dpif OVS_UNUSED, void **iterp) | |
1363 | { | |
1364 | struct dp_netdev_flow_iter *iter; | |
1365 | ||
1366 | *iterp = iter = xmalloc(sizeof *iter); | |
1367 | iter->bucket = 0; | |
1368 | iter->offset = 0; | |
d2ad7ef1 JS |
1369 | iter->status = 0; |
1370 | ovs_mutex_init(&iter->mutex); | |
704a1e09 BP |
1371 | return 0; |
1372 | } | |
1373 | ||
1374 | static int | |
d2ad7ef1 | 1375 | dpif_netdev_flow_dump_next(const struct dpif *dpif, void *iter_, void *state_, |
feebdea2 | 1376 | const struct nlattr **key, size_t *key_len, |
e6cc0bab | 1377 | const struct nlattr **mask, size_t *mask_len, |
feebdea2 | 1378 | const struct nlattr **actions, size_t *actions_len, |
c97fb132 | 1379 | const struct dpif_flow_stats **stats) |
704a1e09 | 1380 | { |
e723fd32 | 1381 | struct dp_netdev_flow_iter *iter = iter_; |
d2ad7ef1 | 1382 | struct dp_netdev_flow_state *state = state_; |
72865317 | 1383 | struct dp_netdev *dp = get_dp_netdev(dpif); |
1763b4b8 | 1384 | struct dp_netdev_flow *netdev_flow; |
d2ad7ef1 | 1385 | int error; |
14608a15 | 1386 | |
d2ad7ef1 JS |
1387 | ovs_mutex_lock(&iter->mutex); |
1388 | error = iter->status; | |
1389 | if (!error) { | |
1390 | struct hmap_node *node; | |
1391 | ||
1392 | fat_rwlock_rdlock(&dp->cls.rwlock); | |
1393 | node = hmap_at_position(&dp->flow_table, &iter->bucket, &iter->offset); | |
1394 | if (node) { | |
1395 | netdev_flow = CONTAINER_OF(node, struct dp_netdev_flow, node); | |
1396 | dp_netdev_flow_ref(netdev_flow); | |
1397 | } | |
1398 | fat_rwlock_unlock(&dp->cls.rwlock); | |
1399 | if (!node) { | |
1400 | iter->status = error = EOF; | |
1401 | } | |
8a4e3a85 | 1402 | } |
d2ad7ef1 JS |
1403 | ovs_mutex_unlock(&iter->mutex); |
1404 | if (error) { | |
1405 | return error; | |
72865317 | 1406 | } |
704a1e09 | 1407 | |
feebdea2 BP |
1408 | if (key) { |
1409 | struct ofpbuf buf; | |
1410 | ||
19cf4069 | 1411 | ofpbuf_use_stack(&buf, &state->keybuf, sizeof state->keybuf); |
2c0ea78f GS |
1412 | odp_flow_key_from_flow(&buf, &netdev_flow->flow, |
1413 | netdev_flow->flow.in_port.odp_port); | |
36956a7d | 1414 | |
feebdea2 BP |
1415 | *key = buf.data; |
1416 | *key_len = buf.size; | |
1417 | } | |
1418 | ||
2c0ea78f GS |
1419 | if (key && mask) { |
1420 | struct ofpbuf buf; | |
1421 | struct flow_wildcards wc; | |
1422 | ||
1423 | ofpbuf_use_stack(&buf, &state->maskbuf, sizeof state->maskbuf); | |
1424 | minimask_expand(&netdev_flow->cr.match.mask, &wc); | |
1425 | odp_flow_key_from_mask(&buf, &wc.masks, &netdev_flow->flow, | |
8bfd0fda BP |
1426 | odp_to_u32(wc.masks.in_port.odp_port), |
1427 | SIZE_MAX); | |
2c0ea78f GS |
1428 | |
1429 | *mask = buf.data; | |
1430 | *mask_len = buf.size; | |
e6cc0bab AZ |
1431 | } |
1432 | ||
8a4e3a85 | 1433 | if (actions || stats) { |
a84cb64a | 1434 | dp_netdev_actions_unref(state->actions); |
8a4e3a85 | 1435 | state->actions = NULL; |
feebdea2 | 1436 | |
8a4e3a85 BP |
1437 | ovs_mutex_lock(&netdev_flow->mutex); |
1438 | if (actions) { | |
1439 | state->actions = dp_netdev_actions_ref(netdev_flow->actions); | |
1440 | *actions = state->actions->actions; | |
1441 | *actions_len = state->actions->size; | |
1442 | } | |
1443 | if (stats) { | |
1444 | get_dpif_flow_stats(netdev_flow, &state->stats); | |
1445 | *stats = &state->stats; | |
1446 | } | |
1447 | ovs_mutex_unlock(&netdev_flow->mutex); | |
feebdea2 | 1448 | } |
704a1e09 | 1449 | |
8a4e3a85 BP |
1450 | dp_netdev_flow_unref(netdev_flow); |
1451 | ||
704a1e09 BP |
1452 | return 0; |
1453 | } | |
1454 | ||
1455 | static int | |
e723fd32 | 1456 | dpif_netdev_flow_dump_done(const struct dpif *dpif OVS_UNUSED, void *iter_) |
704a1e09 | 1457 | { |
e723fd32 | 1458 | struct dp_netdev_flow_iter *iter = iter_; |
feebdea2 | 1459 | |
d2ad7ef1 | 1460 | ovs_mutex_destroy(&iter->mutex); |
e723fd32 | 1461 | free(iter); |
704a1e09 | 1462 | return 0; |
72865317 BP |
1463 | } |
1464 | ||
1465 | static int | |
758c456d | 1466 | dpif_netdev_execute(struct dpif *dpif, struct dpif_execute *execute) |
72865317 BP |
1467 | { |
1468 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
758c456d JR |
1469 | struct pkt_metadata *md = &execute->md; |
1470 | struct flow key; | |
72865317 | 1471 | |
89625d1e BP |
1472 | if (execute->packet->size < ETH_HEADER_LEN || |
1473 | execute->packet->size > UINT16_MAX) { | |
72865317 BP |
1474 | return EINVAL; |
1475 | } | |
1476 | ||
758c456d | 1477 | /* Extract flow key. */ |
b5e7e61a | 1478 | flow_extract(execute->packet, md, &key); |
8a4e3a85 BP |
1479 | |
1480 | ovs_rwlock_rdlock(&dp->port_rwlock); | |
758c456d JR |
1481 | dp_netdev_execute_actions(dp, &key, execute->packet, md, execute->actions, |
1482 | execute->actions_len); | |
8a4e3a85 BP |
1483 | ovs_rwlock_unlock(&dp->port_rwlock); |
1484 | ||
758c456d | 1485 | return 0; |
72865317 BP |
1486 | } |
1487 | ||
1488 | static int | |
a12b3ead | 1489 | dpif_netdev_recv_set(struct dpif *dpif OVS_UNUSED, bool enable OVS_UNUSED) |
72865317 | 1490 | { |
82272ede | 1491 | return 0; |
72865317 BP |
1492 | } |
1493 | ||
5bf93d67 EJ |
1494 | static int |
1495 | dpif_netdev_queue_to_priority(const struct dpif *dpif OVS_UNUSED, | |
1496 | uint32_t queue_id, uint32_t *priority) | |
1497 | { | |
1498 | *priority = queue_id; | |
1499 | return 0; | |
1500 | } | |
1501 | ||
856081f6 | 1502 | static struct dp_netdev_queue * |
f5126b57 BP |
1503 | find_nonempty_queue(struct dp_netdev *dp) |
1504 | OVS_REQUIRES(dp->queue_mutex) | |
72865317 | 1505 | { |
72865317 BP |
1506 | int i; |
1507 | ||
1508 | for (i = 0; i < N_QUEUES; i++) { | |
856081f6 | 1509 | struct dp_netdev_queue *q = &dp->queues[i]; |
a12b3ead | 1510 | if (q->head != q->tail) { |
856081f6 | 1511 | return q; |
72865317 BP |
1512 | } |
1513 | } | |
856081f6 | 1514 | return NULL; |
72865317 BP |
1515 | } |
1516 | ||
1517 | static int | |
90a7c55e BP |
1518 | dpif_netdev_recv(struct dpif *dpif, struct dpif_upcall *upcall, |
1519 | struct ofpbuf *buf) | |
72865317 | 1520 | { |
f5126b57 | 1521 | struct dp_netdev *dp = get_dp_netdev(dpif); |
5279f8fd BP |
1522 | struct dp_netdev_queue *q; |
1523 | int error; | |
1524 | ||
f5126b57 BP |
1525 | ovs_mutex_lock(&dp->queue_mutex); |
1526 | q = find_nonempty_queue(dp); | |
856081f6 | 1527 | if (q) { |
d88b629b BP |
1528 | struct dp_netdev_upcall *u = &q->upcalls[q->tail++ & QUEUE_MASK]; |
1529 | ||
1530 | *upcall = u->upcall; | |
b3907fbc | 1531 | |
90a7c55e | 1532 | ofpbuf_uninit(buf); |
d88b629b | 1533 | *buf = u->buf; |
90a7c55e | 1534 | |
5279f8fd | 1535 | error = 0; |
72865317 | 1536 | } else { |
5279f8fd | 1537 | error = EAGAIN; |
72865317 | 1538 | } |
f5126b57 | 1539 | ovs_mutex_unlock(&dp->queue_mutex); |
5279f8fd BP |
1540 | |
1541 | return error; | |
72865317 BP |
1542 | } |
1543 | ||
1544 | static void | |
1545 | dpif_netdev_recv_wait(struct dpif *dpif) | |
1546 | { | |
d33ed218 BP |
1547 | struct dp_netdev *dp = get_dp_netdev(dpif); |
1548 | uint64_t seq; | |
5279f8fd | 1549 | |
f5126b57 | 1550 | ovs_mutex_lock(&dp->queue_mutex); |
d33ed218 | 1551 | seq = seq_read(dp->queue_seq); |
f5126b57 | 1552 | if (find_nonempty_queue(dp)) { |
72865317 | 1553 | poll_immediate_wake(); |
d33ed218 BP |
1554 | } else { |
1555 | seq_wait(dp->queue_seq, seq); | |
72865317 | 1556 | } |
f5126b57 | 1557 | ovs_mutex_unlock(&dp->queue_mutex); |
72865317 | 1558 | } |
1ba530f4 BP |
1559 | |
1560 | static void | |
1561 | dpif_netdev_recv_purge(struct dpif *dpif) | |
1562 | { | |
1563 | struct dpif_netdev *dpif_netdev = dpif_netdev_cast(dpif); | |
f5126b57 | 1564 | |
1ba530f4 BP |
1565 | dp_netdev_purge_queues(dpif_netdev->dp); |
1566 | } | |
72865317 | 1567 | \f |
a84cb64a BP |
1568 | /* Creates and returns a new 'struct dp_netdev_actions', with a reference count |
1569 | * of 1, whose actions are a copy of from the 'ofpacts_len' bytes of | |
1570 | * 'ofpacts'. */ | |
1571 | struct dp_netdev_actions * | |
1572 | dp_netdev_actions_create(const struct nlattr *actions, size_t size) | |
1573 | { | |
1574 | struct dp_netdev_actions *netdev_actions; | |
1575 | ||
1576 | netdev_actions = xmalloc(sizeof *netdev_actions); | |
1577 | ovs_refcount_init(&netdev_actions->ref_cnt); | |
1578 | netdev_actions->actions = xmemdup(actions, size); | |
1579 | netdev_actions->size = size; | |
1580 | ||
1581 | return netdev_actions; | |
1582 | } | |
1583 | ||
1584 | /* Increments 'actions''s refcount. */ | |
1585 | struct dp_netdev_actions * | |
1586 | dp_netdev_actions_ref(const struct dp_netdev_actions *actions_) | |
1587 | { | |
1588 | struct dp_netdev_actions *actions; | |
1589 | ||
1590 | actions = CONST_CAST(struct dp_netdev_actions *, actions_); | |
1591 | if (actions) { | |
1592 | ovs_refcount_ref(&actions->ref_cnt); | |
1593 | } | |
1594 | return actions; | |
1595 | } | |
1596 | ||
1597 | /* Decrements 'actions''s refcount and frees 'actions' if the refcount reaches | |
1598 | * 0. */ | |
1599 | void | |
1600 | dp_netdev_actions_unref(struct dp_netdev_actions *actions) | |
1601 | { | |
1602 | if (actions && ovs_refcount_unref(&actions->ref_cnt) == 1) { | |
1603 | free(actions->actions); | |
1604 | free(actions); | |
1605 | } | |
1606 | } | |
1607 | \f | |
6c3eee82 BP |
1608 | static void * |
1609 | dp_forwarder_main(void *f_) | |
1610 | { | |
1611 | struct dp_forwarder *f = f_; | |
1612 | struct dp_netdev *dp = f->dp; | |
1613 | struct ofpbuf packet; | |
1614 | ||
1615 | f->name = xasprintf("forwarder_%u", ovsthread_id_self()); | |
1616 | set_subprogram_name("%s", f->name); | |
1617 | ||
1618 | ofpbuf_init(&packet, 0); | |
1619 | while (!latch_is_set(&dp->exit_latch)) { | |
1620 | bool received_anything; | |
1621 | int i; | |
1622 | ||
1623 | ovs_rwlock_rdlock(&dp->port_rwlock); | |
1624 | for (i = 0; i < 50; i++) { | |
1625 | struct dp_netdev_port *port; | |
1626 | ||
1627 | received_anything = false; | |
1628 | HMAP_FOR_EACH (port, node, &f->dp->ports) { | |
1629 | if (port->rx | |
1630 | && port->node.hash >= f->min_hash | |
1631 | && port->node.hash <= f->max_hash) { | |
1632 | int buf_size; | |
1633 | int error; | |
1634 | int mtu; | |
1635 | ||
1636 | if (netdev_get_mtu(port->netdev, &mtu)) { | |
1637 | mtu = ETH_PAYLOAD_MAX; | |
1638 | } | |
1639 | buf_size = DP_NETDEV_HEADROOM + VLAN_ETH_HEADER_LEN + mtu; | |
1640 | ||
1641 | ofpbuf_clear(&packet); | |
1642 | ofpbuf_reserve_with_tailroom(&packet, DP_NETDEV_HEADROOM, | |
1643 | buf_size); | |
1644 | ||
1645 | error = netdev_rx_recv(port->rx, &packet); | |
1646 | if (!error) { | |
1647 | struct pkt_metadata md | |
1648 | = PKT_METADATA_INITIALIZER(port->port_no); | |
6c3eee82 | 1649 | |
b5e7e61a | 1650 | dp_netdev_port_input(dp, &packet, &md); |
6c3eee82 BP |
1651 | received_anything = true; |
1652 | } else if (error != EAGAIN && error != EOPNOTSUPP) { | |
1653 | static struct vlog_rate_limit rl | |
1654 | = VLOG_RATE_LIMIT_INIT(1, 5); | |
1655 | ||
1656 | VLOG_ERR_RL(&rl, "error receiving data from %s: %s", | |
1657 | netdev_get_name(port->netdev), | |
1658 | ovs_strerror(error)); | |
1659 | } | |
1660 | } | |
1661 | } | |
1662 | ||
1663 | if (!received_anything) { | |
1664 | break; | |
1665 | } | |
1666 | } | |
1667 | ||
1668 | if (received_anything) { | |
1669 | poll_immediate_wake(); | |
1670 | } else { | |
1671 | struct dp_netdev_port *port; | |
1672 | ||
1673 | HMAP_FOR_EACH (port, node, &f->dp->ports) | |
1674 | if (port->rx | |
1675 | && port->node.hash >= f->min_hash | |
1676 | && port->node.hash <= f->max_hash) { | |
1677 | netdev_rx_wait(port->rx); | |
1678 | } | |
1679 | seq_wait(dp->port_seq, seq_read(dp->port_seq)); | |
1680 | latch_wait(&dp->exit_latch); | |
1681 | } | |
1682 | ovs_rwlock_unlock(&dp->port_rwlock); | |
1683 | ||
1684 | poll_block(); | |
1685 | } | |
1686 | ofpbuf_uninit(&packet); | |
1687 | ||
1688 | free(f->name); | |
1689 | ||
1690 | return NULL; | |
1691 | } | |
1692 | ||
1693 | static void | |
1694 | dp_netdev_set_threads(struct dp_netdev *dp, int n) | |
1695 | { | |
1696 | int i; | |
1697 | ||
1698 | if (n == dp->n_forwarders) { | |
1699 | return; | |
1700 | } | |
1701 | ||
1702 | /* Stop existing threads. */ | |
1703 | latch_set(&dp->exit_latch); | |
1704 | for (i = 0; i < dp->n_forwarders; i++) { | |
1705 | struct dp_forwarder *f = &dp->forwarders[i]; | |
1706 | ||
1707 | xpthread_join(f->thread, NULL); | |
1708 | } | |
1709 | latch_poll(&dp->exit_latch); | |
1710 | free(dp->forwarders); | |
1711 | ||
1712 | /* Start new threads. */ | |
1713 | dp->forwarders = xmalloc(n * sizeof *dp->forwarders); | |
1714 | dp->n_forwarders = n; | |
1715 | for (i = 0; i < n; i++) { | |
1716 | struct dp_forwarder *f = &dp->forwarders[i]; | |
1717 | ||
1718 | f->dp = dp; | |
1719 | f->min_hash = UINT32_MAX / n * i; | |
1720 | f->max_hash = UINT32_MAX / n * (i + 1) - 1; | |
1721 | if (i == n - 1) { | |
1722 | f->max_hash = UINT32_MAX; | |
1723 | } | |
1724 | xpthread_create(&f->thread, NULL, dp_forwarder_main, f); | |
1725 | } | |
1726 | } | |
1727 | \f | |
72865317 | 1728 | static void |
1763b4b8 GS |
1729 | dp_netdev_flow_used(struct dp_netdev_flow *netdev_flow, |
1730 | const struct ofpbuf *packet) | |
8a4e3a85 | 1731 | OVS_REQUIRES(netdev_flow->mutex) |
72865317 | 1732 | { |
1763b4b8 GS |
1733 | netdev_flow->used = time_msec(); |
1734 | netdev_flow->packet_count++; | |
1735 | netdev_flow->byte_count += packet->size; | |
2c0ea78f | 1736 | netdev_flow->tcp_flags |= packet_get_tcp_flags(packet, &netdev_flow->flow); |
72865317 BP |
1737 | } |
1738 | ||
51852a57 BP |
1739 | static void * |
1740 | dp_netdev_stats_new_cb(void) | |
1741 | { | |
1742 | struct dp_netdev_stats *bucket = xzalloc_cacheline(sizeof *bucket); | |
1743 | ovs_mutex_init(&bucket->mutex); | |
1744 | return bucket; | |
1745 | } | |
1746 | ||
1747 | static void | |
1748 | dp_netdev_count_packet(struct dp_netdev *dp, enum dp_stat_type type) | |
1749 | { | |
1750 | struct dp_netdev_stats *bucket; | |
1751 | ||
1752 | bucket = ovsthread_stats_bucket_get(&dp->stats, dp_netdev_stats_new_cb); | |
1753 | ovs_mutex_lock(&bucket->mutex); | |
1754 | bucket->n[type]++; | |
1755 | ovs_mutex_unlock(&bucket->mutex); | |
1756 | } | |
1757 | ||
72865317 | 1758 | static void |
758c456d JR |
1759 | dp_netdev_port_input(struct dp_netdev *dp, struct ofpbuf *packet, |
1760 | struct pkt_metadata *md) | |
8a4e3a85 | 1761 | OVS_REQ_RDLOCK(dp->port_rwlock) |
72865317 | 1762 | { |
1763b4b8 | 1763 | struct dp_netdev_flow *netdev_flow; |
14608a15 | 1764 | struct flow key; |
72865317 | 1765 | |
1805876e BP |
1766 | if (packet->size < ETH_HEADER_LEN) { |
1767 | return; | |
1768 | } | |
b5e7e61a | 1769 | flow_extract(packet, md, &key); |
1763b4b8 GS |
1770 | netdev_flow = dp_netdev_lookup_flow(dp, &key); |
1771 | if (netdev_flow) { | |
a84cb64a BP |
1772 | struct dp_netdev_actions *actions; |
1773 | ||
8a4e3a85 | 1774 | ovs_mutex_lock(&netdev_flow->mutex); |
1763b4b8 | 1775 | dp_netdev_flow_used(netdev_flow, packet); |
a84cb64a | 1776 | actions = dp_netdev_actions_ref(netdev_flow->actions); |
8a4e3a85 BP |
1777 | ovs_mutex_unlock(&netdev_flow->mutex); |
1778 | ||
758c456d | 1779 | dp_netdev_execute_actions(dp, &key, packet, md, |
a84cb64a BP |
1780 | actions->actions, actions->size); |
1781 | dp_netdev_actions_unref(actions); | |
71c24bb0 | 1782 | dp_netdev_flow_unref(netdev_flow); |
51852a57 | 1783 | dp_netdev_count_packet(dp, DP_STAT_HIT); |
72865317 | 1784 | } else { |
51852a57 | 1785 | dp_netdev_count_packet(dp, DP_STAT_MISS); |
e995e3df | 1786 | dp_netdev_output_userspace(dp, packet, DPIF_UC_MISS, &key, NULL); |
72865317 BP |
1787 | } |
1788 | } | |
1789 | ||
72865317 | 1790 | static int |
da546e07 | 1791 | dp_netdev_output_userspace(struct dp_netdev *dp, struct ofpbuf *packet, |
e995e3df BP |
1792 | int queue_no, const struct flow *flow, |
1793 | const struct nlattr *userdata) | |
f5126b57 | 1794 | OVS_EXCLUDED(dp->queue_mutex) |
72865317 | 1795 | { |
856081f6 | 1796 | struct dp_netdev_queue *q = &dp->queues[queue_no]; |
f5126b57 BP |
1797 | int error; |
1798 | ||
1799 | ovs_mutex_lock(&dp->queue_mutex); | |
e995e3df BP |
1800 | if (q->head - q->tail < MAX_QUEUE_LEN) { |
1801 | struct dp_netdev_upcall *u = &q->upcalls[q->head++ & QUEUE_MASK]; | |
1802 | struct dpif_upcall *upcall = &u->upcall; | |
1803 | struct ofpbuf *buf = &u->buf; | |
1804 | size_t buf_size; | |
1805 | ||
1806 | upcall->type = queue_no; | |
1807 | ||
1808 | /* Allocate buffer big enough for everything. */ | |
da546e07 | 1809 | buf_size = ODPUTIL_FLOW_KEY_BYTES; |
e995e3df BP |
1810 | if (userdata) { |
1811 | buf_size += NLA_ALIGN(userdata->nla_len); | |
1812 | } | |
1813 | ofpbuf_init(buf, buf_size); | |
72865317 | 1814 | |
e995e3df | 1815 | /* Put ODP flow. */ |
4e022ec0 | 1816 | odp_flow_key_from_flow(buf, flow, flow->in_port.odp_port); |
e995e3df BP |
1817 | upcall->key = buf->data; |
1818 | upcall->key_len = buf->size; | |
d88b629b | 1819 | |
e995e3df BP |
1820 | /* Put userdata. */ |
1821 | if (userdata) { | |
1822 | upcall->userdata = ofpbuf_put(buf, userdata, | |
1823 | NLA_ALIGN(userdata->nla_len)); | |
1824 | } | |
856081f6 | 1825 | |
da546e07 JR |
1826 | /* Steal packet data. */ |
1827 | ovs_assert(packet->source == OFPBUF_MALLOC); | |
1828 | upcall->packet = *packet; | |
1829 | ofpbuf_use(packet, NULL, 0); | |
856081f6 | 1830 | |
d33ed218 BP |
1831 | seq_change(dp->queue_seq); |
1832 | ||
f5126b57 | 1833 | error = 0; |
e995e3df | 1834 | } else { |
51852a57 | 1835 | dp_netdev_count_packet(dp, DP_STAT_LOST); |
f5126b57 | 1836 | error = ENOBUFS; |
e995e3df | 1837 | } |
f5126b57 BP |
1838 | ovs_mutex_unlock(&dp->queue_mutex); |
1839 | ||
1840 | return error; | |
72865317 BP |
1841 | } |
1842 | ||
9080a111 JR |
1843 | struct dp_netdev_execute_aux { |
1844 | struct dp_netdev *dp; | |
1845 | const struct flow *key; | |
1846 | }; | |
1847 | ||
1848 | static void | |
758c456d JR |
1849 | dp_execute_cb(void *aux_, struct ofpbuf *packet, |
1850 | const struct pkt_metadata *md OVS_UNUSED, | |
09f9da0b | 1851 | const struct nlattr *a, bool may_steal) |
8a4e3a85 | 1852 | OVS_NO_THREAD_SAFETY_ANALYSIS |
9080a111 JR |
1853 | { |
1854 | struct dp_netdev_execute_aux *aux = aux_; | |
09f9da0b | 1855 | int type = nl_attr_type(a); |
8a4e3a85 | 1856 | struct dp_netdev_port *p; |
9080a111 | 1857 | |
09f9da0b JR |
1858 | switch ((enum ovs_action_attr)type) { |
1859 | case OVS_ACTION_ATTR_OUTPUT: | |
8a4e3a85 BP |
1860 | p = dp_netdev_lookup_port(aux->dp, u32_to_odp(nl_attr_get_u32(a))); |
1861 | if (p) { | |
1862 | netdev_send(p->netdev, packet); | |
1863 | } | |
09f9da0b JR |
1864 | break; |
1865 | ||
1866 | case OVS_ACTION_ATTR_USERSPACE: { | |
1867 | const struct nlattr *userdata; | |
4fc65926 | 1868 | |
09f9da0b | 1869 | userdata = nl_attr_find_nested(a, OVS_USERSPACE_ATTR_USERDATA); |
da546e07 | 1870 | |
09f9da0b JR |
1871 | /* Make a copy if we are not allowed to steal the packet's data. */ |
1872 | if (!may_steal) { | |
1873 | packet = ofpbuf_clone_with_headroom(packet, DP_NETDEV_HEADROOM); | |
1874 | } | |
1875 | dp_netdev_output_userspace(aux->dp, packet, DPIF_UC_ACTION, aux->key, | |
1876 | userdata); | |
1877 | if (!may_steal) { | |
1878 | ofpbuf_uninit(packet); | |
1879 | } | |
1880 | break; | |
da546e07 | 1881 | } |
09f9da0b JR |
1882 | case OVS_ACTION_ATTR_PUSH_VLAN: |
1883 | case OVS_ACTION_ATTR_POP_VLAN: | |
1884 | case OVS_ACTION_ATTR_PUSH_MPLS: | |
1885 | case OVS_ACTION_ATTR_POP_MPLS: | |
1886 | case OVS_ACTION_ATTR_SET: | |
1887 | case OVS_ACTION_ATTR_SAMPLE: | |
1888 | case OVS_ACTION_ATTR_UNSPEC: | |
1889 | case __OVS_ACTION_ATTR_MAX: | |
1890 | OVS_NOT_REACHED(); | |
da546e07 | 1891 | } |
98403001 BP |
1892 | } |
1893 | ||
4edb9ae9 | 1894 | static void |
9080a111 | 1895 | dp_netdev_execute_actions(struct dp_netdev *dp, const struct flow *key, |
758c456d | 1896 | struct ofpbuf *packet, struct pkt_metadata *md, |
9080a111 | 1897 | const struct nlattr *actions, size_t actions_len) |
8a4e3a85 | 1898 | OVS_REQ_RDLOCK(dp->port_rwlock) |
72865317 | 1899 | { |
9080a111 | 1900 | struct dp_netdev_execute_aux aux = {dp, key}; |
9080a111 | 1901 | |
758c456d | 1902 | odp_execute_actions(&aux, packet, md, actions, actions_len, dp_execute_cb); |
72865317 BP |
1903 | } |
1904 | ||
1905 | const struct dpif_class dpif_netdev_class = { | |
72865317 | 1906 | "netdev", |
2197d7ab | 1907 | dpif_netdev_enumerate, |
0aeaabc8 | 1908 | dpif_netdev_port_open_type, |
72865317 BP |
1909 | dpif_netdev_open, |
1910 | dpif_netdev_close, | |
7dab847a | 1911 | dpif_netdev_destroy, |
6c3eee82 BP |
1912 | NULL, /* run */ |
1913 | NULL, /* wait */ | |
72865317 | 1914 | dpif_netdev_get_stats, |
72865317 BP |
1915 | dpif_netdev_port_add, |
1916 | dpif_netdev_port_del, | |
1917 | dpif_netdev_port_query_by_number, | |
1918 | dpif_netdev_port_query_by_name, | |
98403001 | 1919 | NULL, /* port_get_pid */ |
b0ec0f27 BP |
1920 | dpif_netdev_port_dump_start, |
1921 | dpif_netdev_port_dump_next, | |
1922 | dpif_netdev_port_dump_done, | |
72865317 BP |
1923 | dpif_netdev_port_poll, |
1924 | dpif_netdev_port_poll_wait, | |
72865317 BP |
1925 | dpif_netdev_flow_get, |
1926 | dpif_netdev_flow_put, | |
1927 | dpif_netdev_flow_del, | |
1928 | dpif_netdev_flow_flush, | |
e723fd32 | 1929 | dpif_netdev_flow_dump_state_init, |
704a1e09 BP |
1930 | dpif_netdev_flow_dump_start, |
1931 | dpif_netdev_flow_dump_next, | |
bdeadfdd | 1932 | NULL, |
704a1e09 | 1933 | dpif_netdev_flow_dump_done, |
e723fd32 | 1934 | dpif_netdev_flow_dump_state_uninit, |
72865317 | 1935 | dpif_netdev_execute, |
6bc60024 | 1936 | NULL, /* operate */ |
a12b3ead | 1937 | dpif_netdev_recv_set, |
5bf93d67 | 1938 | dpif_netdev_queue_to_priority, |
72865317 BP |
1939 | dpif_netdev_recv, |
1940 | dpif_netdev_recv_wait, | |
1ba530f4 | 1941 | dpif_netdev_recv_purge, |
72865317 | 1942 | }; |
614c4892 | 1943 | |
74cc3969 BP |
1944 | static void |
1945 | dpif_dummy_change_port_number(struct unixctl_conn *conn, int argc OVS_UNUSED, | |
1946 | const char *argv[], void *aux OVS_UNUSED) | |
1947 | { | |
1948 | struct dp_netdev_port *port; | |
1949 | struct dp_netdev *dp; | |
ff073a71 | 1950 | odp_port_t port_no; |
74cc3969 | 1951 | |
8a4e3a85 | 1952 | ovs_mutex_lock(&dp_netdev_mutex); |
74cc3969 BP |
1953 | dp = shash_find_data(&dp_netdevs, argv[1]); |
1954 | if (!dp || !dpif_netdev_class_is_dummy(dp->class)) { | |
8a4e3a85 | 1955 | ovs_mutex_unlock(&dp_netdev_mutex); |
74cc3969 BP |
1956 | unixctl_command_reply_error(conn, "unknown datapath or not a dummy"); |
1957 | return; | |
1958 | } | |
8a4e3a85 BP |
1959 | ovs_refcount_ref(&dp->ref_cnt); |
1960 | ovs_mutex_unlock(&dp_netdev_mutex); | |
74cc3969 | 1961 | |
8a4e3a85 | 1962 | ovs_rwlock_wrlock(&dp->port_rwlock); |
74cc3969 BP |
1963 | if (get_port_by_name(dp, argv[2], &port)) { |
1964 | unixctl_command_reply_error(conn, "unknown port"); | |
8a4e3a85 | 1965 | goto exit; |
74cc3969 BP |
1966 | } |
1967 | ||
ff073a71 BP |
1968 | port_no = u32_to_odp(atoi(argv[3])); |
1969 | if (!port_no || port_no == ODPP_NONE) { | |
74cc3969 | 1970 | unixctl_command_reply_error(conn, "bad port number"); |
8a4e3a85 | 1971 | goto exit; |
74cc3969 | 1972 | } |
ff073a71 | 1973 | if (dp_netdev_lookup_port(dp, port_no)) { |
74cc3969 | 1974 | unixctl_command_reply_error(conn, "port number already in use"); |
8a4e3a85 | 1975 | goto exit; |
74cc3969 | 1976 | } |
ff073a71 BP |
1977 | hmap_remove(&dp->ports, &port->node); |
1978 | port->port_no = port_no; | |
1979 | hmap_insert(&dp->ports, &port->node, hash_int(odp_to_u32(port_no), 0)); | |
d33ed218 | 1980 | seq_change(dp->port_seq); |
74cc3969 | 1981 | unixctl_command_reply(conn, NULL); |
8a4e3a85 BP |
1982 | |
1983 | exit: | |
1984 | ovs_rwlock_unlock(&dp->port_rwlock); | |
1985 | dp_netdev_unref(dp); | |
74cc3969 BP |
1986 | } |
1987 | ||
0cbfe35d BP |
1988 | static void |
1989 | dpif_dummy_register__(const char *type) | |
1990 | { | |
1991 | struct dpif_class *class; | |
1992 | ||
1993 | class = xmalloc(sizeof *class); | |
1994 | *class = dpif_netdev_class; | |
1995 | class->type = xstrdup(type); | |
1996 | dp_register_provider(class); | |
1997 | } | |
1998 | ||
614c4892 | 1999 | void |
0cbfe35d | 2000 | dpif_dummy_register(bool override) |
614c4892 | 2001 | { |
0cbfe35d BP |
2002 | if (override) { |
2003 | struct sset types; | |
2004 | const char *type; | |
2005 | ||
2006 | sset_init(&types); | |
2007 | dp_enumerate_types(&types); | |
2008 | SSET_FOR_EACH (type, &types) { | |
2009 | if (!dp_unregister_provider(type)) { | |
2010 | dpif_dummy_register__(type); | |
2011 | } | |
2012 | } | |
2013 | sset_destroy(&types); | |
614c4892 | 2014 | } |
0cbfe35d BP |
2015 | |
2016 | dpif_dummy_register__("dummy"); | |
74cc3969 BP |
2017 | |
2018 | unixctl_command_register("dpif-dummy/change-port-number", | |
2019 | "DP PORT NEW-NUMBER", | |
2020 | 3, 3, dpif_dummy_change_port_number, NULL); | |
614c4892 | 2021 | } |