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72865317 | 1 | /* |
d262ac2c | 2 | * Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 2016 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> | |
db73f716 | 18 | #include "dpif-netdev.h" |
72865317 | 19 | |
72865317 BP |
20 | #include <ctype.h> |
21 | #include <errno.h> | |
22 | #include <fcntl.h> | |
23 | #include <inttypes.h> | |
7f3adc00 | 24 | #include <net/if.h> |
7daedce4 | 25 | #include <netinet/in.h> |
cdee00fd | 26 | #include <stdint.h> |
72865317 BP |
27 | #include <stdlib.h> |
28 | #include <string.h> | |
29 | #include <sys/ioctl.h> | |
7daedce4 | 30 | #include <sys/socket.h> |
72865317 | 31 | #include <sys/stat.h> |
72865317 BP |
32 | #include <unistd.h> |
33 | ||
9f861c91 | 34 | #include "bitmap.h" |
59e6d833 | 35 | #include "cmap.h" |
7daedce4 | 36 | #include "coverage.h" |
72865317 | 37 | #include "csum.h" |
e14deea0 | 38 | #include "dp-packet.h" |
614c4892 | 39 | #include "dpif.h" |
72865317 | 40 | #include "dpif-provider.h" |
614c4892 | 41 | #include "dummy.h" |
afae68b1 | 42 | #include "fat-rwlock.h" |
72865317 | 43 | #include "flow.h" |
762d146a | 44 | #include "hmapx.h" |
6c3eee82 | 45 | #include "latch.h" |
72865317 | 46 | #include "netdev.h" |
8617afff | 47 | #include "netdev-dpdk.h" |
de281153 | 48 | #include "netdev-vport.h" |
cdee00fd | 49 | #include "netlink.h" |
f094af7b | 50 | #include "odp-execute.h" |
72865317 | 51 | #include "odp-util.h" |
25d436fb BW |
52 | #include "openvswitch/dynamic-string.h" |
53 | #include "openvswitch/list.h" | |
54 | #include "openvswitch/match.h" | |
55 | #include "openvswitch/ofp-print.h" | |
64c96779 | 56 | #include "openvswitch/ofpbuf.h" |
25d436fb | 57 | #include "openvswitch/vlog.h" |
5a034064 | 58 | #include "ovs-numa.h" |
61e7deb1 | 59 | #include "ovs-rcu.h" |
72865317 BP |
60 | #include "packets.h" |
61 | #include "poll-loop.h" | |
0de8783a | 62 | #include "pvector.h" |
26c6b6cd | 63 | #include "random.h" |
d33ed218 | 64 | #include "seq.h" |
462278db | 65 | #include "shash.h" |
0cbfe35d | 66 | #include "sset.h" |
72865317 | 67 | #include "timeval.h" |
53902038 | 68 | #include "tnl-neigh-cache.h" |
7f9b8504 | 69 | #include "tnl-ports.h" |
74cc3969 | 70 | #include "unixctl.h" |
72865317 | 71 | #include "util.h" |
7daedce4 | 72 | |
d98e6007 | 73 | VLOG_DEFINE_THIS_MODULE(dpif_netdev); |
72865317 | 74 | |
8bb113da | 75 | #define FLOW_DUMP_MAX_BATCH 50 |
adcf00ba AZ |
76 | /* Use per thread recirc_depth to prevent recirculation loop. */ |
77 | #define MAX_RECIRC_DEPTH 5 | |
78 | DEFINE_STATIC_PER_THREAD_DATA(uint32_t, recirc_depth, 0) | |
e4cfed38 | 79 | |
72865317 | 80 | /* Configuration parameters. */ |
72865317 BP |
81 | enum { MAX_FLOWS = 65536 }; /* Maximum number of flows in flow table. */ |
82 | ||
8a4e3a85 BP |
83 | /* Protects against changes to 'dp_netdevs'. */ |
84 | static struct ovs_mutex dp_netdev_mutex = OVS_MUTEX_INITIALIZER; | |
85 | ||
86 | /* Contains all 'struct dp_netdev's. */ | |
87 | static struct shash dp_netdevs OVS_GUARDED_BY(dp_netdev_mutex) | |
88 | = SHASH_INITIALIZER(&dp_netdevs); | |
89 | ||
623540e4 | 90 | static struct vlog_rate_limit upcall_rl = VLOG_RATE_LIMIT_INIT(600, 600); |
6b31e073 | 91 | |
2494ccd7 JS |
92 | static struct odp_support dp_netdev_support = { |
93 | .max_mpls_depth = SIZE_MAX, | |
94 | .recirc = true, | |
95 | }; | |
96 | ||
79df317f | 97 | /* Stores a miniflow with inline values */ |
9bbf1c3d | 98 | |
9bbf1c3d | 99 | struct netdev_flow_key { |
caeb4906 JR |
100 | uint32_t hash; /* Hash function differs for different users. */ |
101 | uint32_t len; /* Length of the following miniflow (incl. map). */ | |
0de8783a | 102 | struct miniflow mf; |
8fd47924 | 103 | uint64_t buf[FLOW_MAX_PACKET_U64S]; |
9bbf1c3d DDP |
104 | }; |
105 | ||
106 | /* Exact match cache for frequently used flows | |
107 | * | |
108 | * The cache uses a 32-bit hash of the packet (which can be the RSS hash) to | |
109 | * search its entries for a miniflow that matches exactly the miniflow of the | |
0de8783a | 110 | * packet. It stores the 'dpcls_rule' (rule) that matches the miniflow. |
9bbf1c3d DDP |
111 | * |
112 | * A cache entry holds a reference to its 'dp_netdev_flow'. | |
113 | * | |
114 | * A miniflow with a given hash can be in one of EM_FLOW_HASH_SEGS different | |
115 | * entries. The 32-bit hash is split into EM_FLOW_HASH_SEGS values (each of | |
116 | * them is EM_FLOW_HASH_SHIFT bits wide and the remainder is thrown away). Each | |
117 | * value is the index of a cache entry where the miniflow could be. | |
118 | * | |
119 | * | |
120 | * Thread-safety | |
121 | * ============= | |
122 | * | |
123 | * Each pmd_thread has its own private exact match cache. | |
124 | * If dp_netdev_input is not called from a pmd thread, a mutex is used. | |
125 | */ | |
126 | ||
fc82e877 | 127 | #define EM_FLOW_HASH_SHIFT 13 |
9bbf1c3d DDP |
128 | #define EM_FLOW_HASH_ENTRIES (1u << EM_FLOW_HASH_SHIFT) |
129 | #define EM_FLOW_HASH_MASK (EM_FLOW_HASH_ENTRIES - 1) | |
130 | #define EM_FLOW_HASH_SEGS 2 | |
131 | ||
132 | struct emc_entry { | |
9bbf1c3d | 133 | struct dp_netdev_flow *flow; |
0de8783a | 134 | struct netdev_flow_key key; /* key.hash used for emc hash value. */ |
9bbf1c3d DDP |
135 | }; |
136 | ||
137 | struct emc_cache { | |
138 | struct emc_entry entries[EM_FLOW_HASH_ENTRIES]; | |
67ad54cb | 139 | int sweep_idx; /* For emc_cache_slow_sweep(). */ |
9bbf1c3d DDP |
140 | }; |
141 | ||
142 | /* Iterate in the exact match cache through every entry that might contain a | |
143 | * miniflow with hash 'HASH'. */ | |
144 | #define EMC_FOR_EACH_POS_WITH_HASH(EMC, CURRENT_ENTRY, HASH) \ | |
145 | for (uint32_t i__ = 0, srch_hash__ = (HASH); \ | |
146 | (CURRENT_ENTRY) = &(EMC)->entries[srch_hash__ & EM_FLOW_HASH_MASK], \ | |
147 | i__ < EM_FLOW_HASH_SEGS; \ | |
148 | i__++, srch_hash__ >>= EM_FLOW_HASH_SHIFT) | |
0de8783a JR |
149 | \f |
150 | /* Simple non-wildcarding single-priority classifier. */ | |
151 | ||
152 | struct dpcls { | |
153 | struct cmap subtables_map; | |
154 | struct pvector subtables; | |
155 | }; | |
9bbf1c3d | 156 | |
0de8783a JR |
157 | /* A rule to be inserted to the classifier. */ |
158 | struct dpcls_rule { | |
159 | struct cmap_node cmap_node; /* Within struct dpcls_subtable 'rules'. */ | |
160 | struct netdev_flow_key *mask; /* Subtable's mask. */ | |
161 | struct netdev_flow_key flow; /* Matching key. */ | |
162 | /* 'flow' must be the last field, additional space is allocated here. */ | |
163 | }; | |
164 | ||
165 | static void dpcls_init(struct dpcls *); | |
166 | static void dpcls_destroy(struct dpcls *); | |
167 | static void dpcls_insert(struct dpcls *, struct dpcls_rule *, | |
168 | const struct netdev_flow_key *mask); | |
169 | static void dpcls_remove(struct dpcls *, struct dpcls_rule *); | |
170 | static bool dpcls_lookup(const struct dpcls *cls, | |
171 | const struct netdev_flow_key keys[], | |
172 | struct dpcls_rule **rules, size_t cnt); | |
173 | \f | |
8a4e3a85 BP |
174 | /* Datapath based on the network device interface from netdev.h. |
175 | * | |
176 | * | |
177 | * Thread-safety | |
178 | * ============= | |
179 | * | |
180 | * Some members, marked 'const', are immutable. Accessing other members | |
181 | * requires synchronization, as noted in more detail below. | |
182 | * | |
183 | * Acquisition order is, from outermost to innermost: | |
184 | * | |
185 | * dp_netdev_mutex (global) | |
59e6d833 | 186 | * port_mutex |
8a4e3a85 | 187 | */ |
72865317 | 188 | struct dp_netdev { |
8a4e3a85 BP |
189 | const struct dpif_class *const class; |
190 | const char *const name; | |
6b31e073 | 191 | struct dpif *dpif; |
6a8267c5 BP |
192 | struct ovs_refcount ref_cnt; |
193 | atomic_flag destroyed; | |
72865317 | 194 | |
8a4e3a85 BP |
195 | /* Ports. |
196 | * | |
59e6d833 BP |
197 | * Protected by RCU. Take the mutex to add or remove ports. */ |
198 | struct ovs_mutex port_mutex; | |
199 | struct cmap ports; | |
d33ed218 | 200 | struct seq *port_seq; /* Incremented whenever a port changes. */ |
6c3eee82 | 201 | |
6b31e073 RW |
202 | /* Protects access to ofproto-dpif-upcall interface during revalidator |
203 | * thread synchronization. */ | |
204 | struct fat_rwlock upcall_rwlock; | |
623540e4 EJ |
205 | upcall_callback *upcall_cb; /* Callback function for executing upcalls. */ |
206 | void *upcall_aux; | |
6b31e073 | 207 | |
e4e74c3a AW |
208 | /* Callback function for notifying the purging of dp flows (during |
209 | * reseting pmd deletion). */ | |
210 | dp_purge_callback *dp_purge_cb; | |
211 | void *dp_purge_aux; | |
212 | ||
65f13b50 AW |
213 | /* Stores all 'struct dp_netdev_pmd_thread's. */ |
214 | struct cmap poll_threads; | |
215 | ||
216 | /* Protects the access of the 'struct dp_netdev_pmd_thread' | |
217 | * instance for non-pmd thread. */ | |
218 | struct ovs_mutex non_pmd_mutex; | |
219 | ||
220 | /* Each pmd thread will store its pointer to | |
221 | * 'struct dp_netdev_pmd_thread' in 'per_pmd_key'. */ | |
222 | ovsthread_key_t per_pmd_key; | |
f2eee189 | 223 | |
a14b8947 | 224 | /* Cpu mask for pin of pmd threads. */ |
f2eee189 | 225 | char *pmd_cmask; |
a36de779 | 226 | uint64_t last_tnl_conf_seq; |
72865317 BP |
227 | }; |
228 | ||
8a4e3a85 | 229 | static struct dp_netdev_port *dp_netdev_lookup_port(const struct dp_netdev *dp, |
59e6d833 | 230 | odp_port_t); |
ff073a71 | 231 | |
51852a57 | 232 | enum dp_stat_type { |
abcf3ef4 DDP |
233 | DP_STAT_EXACT_HIT, /* Packets that had an exact match (emc). */ |
234 | DP_STAT_MASKED_HIT, /* Packets that matched in the flow table. */ | |
51852a57 BP |
235 | DP_STAT_MISS, /* Packets that did not match. */ |
236 | DP_STAT_LOST, /* Packets not passed up to the client. */ | |
237 | DP_N_STATS | |
238 | }; | |
239 | ||
55e3ca97 DDP |
240 | enum pmd_cycles_counter_type { |
241 | PMD_CYCLES_POLLING, /* Cycles spent polling NICs. */ | |
242 | PMD_CYCLES_PROCESSING, /* Cycles spent processing packets */ | |
243 | PMD_N_CYCLES | |
244 | }; | |
245 | ||
72865317 BP |
246 | /* A port in a netdev-based datapath. */ |
247 | struct dp_netdev_port { | |
35303d71 | 248 | odp_port_t port_no; |
72865317 | 249 | struct netdev *netdev; |
efa2bcbb | 250 | struct cmap_node node; /* Node in dp_netdev's 'ports'. */ |
4b609110 | 251 | struct netdev_saved_flags *sf; |
490e82af | 252 | unsigned n_rxq; /* Number of elements in 'rxq' */ |
55c955bd | 253 | struct netdev_rxq **rxq; |
0cbfe35d | 254 | char *type; /* Port type as requested by user. */ |
a14b8947 IM |
255 | int latest_requested_n_rxq; /* Latest requested from netdev number |
256 | of rx queues. */ | |
72865317 BP |
257 | }; |
258 | ||
1c1e46ed AW |
259 | /* Contained by struct dp_netdev_flow's 'stats' member. */ |
260 | struct dp_netdev_flow_stats { | |
eb94da30 DDP |
261 | atomic_llong used; /* Last used time, in monotonic msecs. */ |
262 | atomic_ullong packet_count; /* Number of packets matched. */ | |
263 | atomic_ullong byte_count; /* Number of bytes matched. */ | |
264 | atomic_uint16_t tcp_flags; /* Bitwise-OR of seen tcp_flags values. */ | |
1c1e46ed AW |
265 | }; |
266 | ||
267 | /* A flow in 'dp_netdev_pmd_thread's 'flow_table'. | |
8a4e3a85 BP |
268 | * |
269 | * | |
270 | * Thread-safety | |
271 | * ============= | |
272 | * | |
273 | * Except near the beginning or ending of its lifespan, rule 'rule' belongs to | |
1c1e46ed | 274 | * its pmd thread's classifier. The text below calls this classifier 'cls'. |
8a4e3a85 BP |
275 | * |
276 | * Motivation | |
277 | * ---------- | |
278 | * | |
279 | * The thread safety rules described here for "struct dp_netdev_flow" are | |
280 | * motivated by two goals: | |
281 | * | |
282 | * - Prevent threads that read members of "struct dp_netdev_flow" from | |
283 | * reading bad data due to changes by some thread concurrently modifying | |
284 | * those members. | |
285 | * | |
286 | * - Prevent two threads making changes to members of a given "struct | |
287 | * dp_netdev_flow" from interfering with each other. | |
288 | * | |
289 | * | |
290 | * Rules | |
291 | * ----- | |
292 | * | |
ed79f89a DDP |
293 | * A flow 'flow' may be accessed without a risk of being freed during an RCU |
294 | * grace period. Code that needs to hold onto a flow for a while | |
295 | * should try incrementing 'flow->ref_cnt' with dp_netdev_flow_ref(). | |
8a4e3a85 BP |
296 | * |
297 | * 'flow->ref_cnt' protects 'flow' from being freed. It doesn't protect the | |
ed79f89a DDP |
298 | * flow from being deleted from 'cls' and it doesn't protect members of 'flow' |
299 | * from modification. | |
8a4e3a85 BP |
300 | * |
301 | * Some members, marked 'const', are immutable. Accessing other members | |
302 | * requires synchronization, as noted in more detail below. | |
303 | */ | |
72865317 | 304 | struct dp_netdev_flow { |
11e5cf1f | 305 | const struct flow flow; /* Unmasked flow that created this entry. */ |
8a4e3a85 | 306 | /* Hash table index by unmasked flow. */ |
1c1e46ed AW |
307 | const struct cmap_node node; /* In owning dp_netdev_pmd_thread's */ |
308 | /* 'flow_table'. */ | |
70e5ed6f | 309 | const ovs_u128 ufid; /* Unique flow identifier. */ |
bd5131ba | 310 | const unsigned pmd_id; /* The 'core_id' of pmd thread owning this */ |
1c1e46ed | 311 | /* flow. */ |
72865317 | 312 | |
ed79f89a DDP |
313 | /* Number of references. |
314 | * The classifier owns one reference. | |
315 | * Any thread trying to keep a rule from being freed should hold its own | |
316 | * reference. */ | |
317 | struct ovs_refcount ref_cnt; | |
318 | ||
11e5cf1f DDP |
319 | bool dead; |
320 | ||
1c1e46ed AW |
321 | /* Statistics. */ |
322 | struct dp_netdev_flow_stats stats; | |
8a4e3a85 | 323 | |
45c626a3 | 324 | /* Actions. */ |
61e7deb1 | 325 | OVSRCU_TYPE(struct dp_netdev_actions *) actions; |
0de8783a | 326 | |
11e5cf1f DDP |
327 | /* While processing a group of input packets, the datapath uses the next |
328 | * member to store a pointer to the output batch for the flow. It is | |
329 | * reset after the batch has been sent out (See dp_netdev_queue_batches(), | |
f7ce4811 PS |
330 | * packet_batch_per_flow_init() and packet_batch_per_flow_execute()). */ |
331 | struct packet_batch_per_flow *batch; | |
11e5cf1f | 332 | |
0de8783a JR |
333 | /* Packet classification. */ |
334 | struct dpcls_rule cr; /* In owning dp_netdev's 'cls'. */ | |
335 | /* 'cr' must be the last member. */ | |
72865317 BP |
336 | }; |
337 | ||
ed79f89a | 338 | static void dp_netdev_flow_unref(struct dp_netdev_flow *); |
9bbf1c3d | 339 | static bool dp_netdev_flow_ref(struct dp_netdev_flow *); |
70e5ed6f JS |
340 | static int dpif_netdev_flow_from_nlattrs(const struct nlattr *, uint32_t, |
341 | struct flow *); | |
8a4e3a85 | 342 | |
a84cb64a BP |
343 | /* A set of datapath actions within a "struct dp_netdev_flow". |
344 | * | |
345 | * | |
346 | * Thread-safety | |
347 | * ============= | |
348 | * | |
45c626a3 | 349 | * A struct dp_netdev_actions 'actions' is protected with RCU. */ |
a84cb64a | 350 | struct dp_netdev_actions { |
a84cb64a BP |
351 | /* These members are immutable: they do not change during the struct's |
352 | * lifetime. */ | |
a84cb64a | 353 | unsigned int size; /* Size of 'actions', in bytes. */ |
9ff55ae2 | 354 | struct nlattr actions[]; /* Sequence of OVS_ACTION_ATTR_* attributes. */ |
a84cb64a BP |
355 | }; |
356 | ||
357 | struct dp_netdev_actions *dp_netdev_actions_create(const struct nlattr *, | |
358 | size_t); | |
61e7deb1 BP |
359 | struct dp_netdev_actions *dp_netdev_flow_get_actions( |
360 | const struct dp_netdev_flow *); | |
361 | static void dp_netdev_actions_free(struct dp_netdev_actions *); | |
a84cb64a | 362 | |
1c1e46ed AW |
363 | /* Contained by struct dp_netdev_pmd_thread's 'stats' member. */ |
364 | struct dp_netdev_pmd_stats { | |
365 | /* Indexed by DP_STAT_*. */ | |
eb94da30 | 366 | atomic_ullong n[DP_N_STATS]; |
1c1e46ed AW |
367 | }; |
368 | ||
55e3ca97 DDP |
369 | /* Contained by struct dp_netdev_pmd_thread's 'cycle' member. */ |
370 | struct dp_netdev_pmd_cycles { | |
371 | /* Indexed by PMD_CYCLES_*. */ | |
372 | atomic_ullong n[PMD_N_CYCLES]; | |
373 | }; | |
374 | ||
ae7ad0a1 IM |
375 | /* Contained by struct dp_netdev_pmd_thread's 'poll_list' member. */ |
376 | struct rxq_poll { | |
377 | struct dp_netdev_port *port; | |
378 | struct netdev_rxq *rx; | |
379 | struct ovs_list node; | |
380 | }; | |
381 | ||
e4cfed38 PS |
382 | /* PMD: Poll modes drivers. PMD accesses devices via polling to eliminate |
383 | * the performance overhead of interrupt processing. Therefore netdev can | |
384 | * not implement rx-wait for these devices. dpif-netdev needs to poll | |
385 | * these device to check for recv buffer. pmd-thread does polling for | |
1c1e46ed | 386 | * devices assigned to itself. |
e4cfed38 PS |
387 | * |
388 | * DPDK used PMD for accessing NIC. | |
389 | * | |
65f13b50 AW |
390 | * Note, instance with cpu core id NON_PMD_CORE_ID will be reserved for |
391 | * I/O of all non-pmd threads. There will be no actual thread created | |
392 | * for the instance. | |
1c1e46ed AW |
393 | * |
394 | * Each struct has its own flow table and classifier. Packets received | |
395 | * from managed ports are looked up in the corresponding pmd thread's | |
396 | * flow table, and are executed with the found actions. | |
397 | * */ | |
65f13b50 | 398 | struct dp_netdev_pmd_thread { |
6c3eee82 | 399 | struct dp_netdev *dp; |
1c1e46ed | 400 | struct ovs_refcount ref_cnt; /* Every reference must be refcount'ed. */ |
65f13b50 | 401 | struct cmap_node node; /* In 'dp->poll_threads'. */ |
accf8626 AW |
402 | |
403 | pthread_cond_t cond; /* For synchronizing pmd thread reload. */ | |
404 | struct ovs_mutex cond_mutex; /* Mutex for condition variable. */ | |
405 | ||
65f13b50 AW |
406 | /* Per thread exact-match cache. Note, the instance for cpu core |
407 | * NON_PMD_CORE_ID can be accessed by multiple threads, and thusly | |
408 | * need to be protected (e.g. by 'dp_netdev_mutex'). All other | |
409 | * instances will only be accessed by its own pmd thread. */ | |
9bbf1c3d | 410 | struct emc_cache flow_cache; |
1c1e46ed AW |
411 | |
412 | /* Classifier and Flow-Table. | |
413 | * | |
414 | * Writers of 'flow_table' must take the 'flow_mutex'. Corresponding | |
415 | * changes to 'cls' must be made while still holding the 'flow_mutex'. | |
416 | */ | |
417 | struct ovs_mutex flow_mutex; | |
418 | struct dpcls cls; | |
419 | struct cmap flow_table OVS_GUARDED; /* Flow table. */ | |
420 | ||
421 | /* Statistics. */ | |
422 | struct dp_netdev_pmd_stats stats; | |
423 | ||
55e3ca97 DDP |
424 | /* Cycles counters */ |
425 | struct dp_netdev_pmd_cycles cycles; | |
426 | ||
427 | /* Used to count cicles. See 'cycles_counter_end()' */ | |
428 | unsigned long long last_cycles; | |
429 | ||
65f13b50 AW |
430 | struct latch exit_latch; /* For terminating the pmd thread. */ |
431 | atomic_uint change_seq; /* For reloading pmd ports. */ | |
6c3eee82 | 432 | pthread_t thread; |
65f13b50 AW |
433 | int index; /* Idx of this pmd thread among pmd*/ |
434 | /* threads on same numa node. */ | |
bd5131ba | 435 | unsigned core_id; /* CPU core id of this pmd thread. */ |
65f13b50 | 436 | int numa_id; /* numa node id of this pmd thread. */ |
347ba9bb | 437 | atomic_int tx_qid; /* Queue id used by this pmd thread to |
3bcc10c0 | 438 | * send packets on all netdevs */ |
6553d06b | 439 | |
ae7ad0a1 IM |
440 | struct ovs_mutex poll_mutex; /* Mutex for poll_list. */ |
441 | /* List of rx queues to poll. */ | |
442 | struct ovs_list poll_list OVS_GUARDED; | |
443 | int poll_cnt; /* Number of elemints in poll_list. */ | |
444 | ||
6553d06b DDP |
445 | /* Only a pmd thread can write on its own 'cycles' and 'stats'. |
446 | * The main thread keeps 'stats_zero' and 'cycles_zero' as base | |
447 | * values and subtracts them from 'stats' and 'cycles' before | |
448 | * reporting to the user */ | |
449 | unsigned long long stats_zero[DP_N_STATS]; | |
450 | uint64_t cycles_zero[PMD_N_CYCLES]; | |
6c3eee82 BP |
451 | }; |
452 | ||
84067a4c JR |
453 | #define PMD_INITIAL_SEQ 1 |
454 | ||
72865317 BP |
455 | /* Interface to netdev-based datapath. */ |
456 | struct dpif_netdev { | |
457 | struct dpif dpif; | |
458 | struct dp_netdev *dp; | |
d33ed218 | 459 | uint64_t last_port_seq; |
72865317 BP |
460 | }; |
461 | ||
8a4e3a85 | 462 | static int get_port_by_number(struct dp_netdev *dp, odp_port_t port_no, |
59e6d833 | 463 | struct dp_netdev_port **portp); |
8a4e3a85 | 464 | static int get_port_by_name(struct dp_netdev *dp, const char *devname, |
59e6d833 | 465 | struct dp_netdev_port **portp); |
8a4e3a85 BP |
466 | static void dp_netdev_free(struct dp_netdev *) |
467 | OVS_REQUIRES(dp_netdev_mutex); | |
8a4e3a85 BP |
468 | static int do_add_port(struct dp_netdev *dp, const char *devname, |
469 | const char *type, odp_port_t port_no) | |
59e6d833 | 470 | OVS_REQUIRES(dp->port_mutex); |
c40b890f | 471 | static void do_del_port(struct dp_netdev *dp, struct dp_netdev_port *) |
59e6d833 | 472 | OVS_REQUIRES(dp->port_mutex); |
614c4892 BP |
473 | static int dpif_netdev_open(const struct dpif_class *, const char *name, |
474 | bool create, struct dpif **); | |
65f13b50 | 475 | static void dp_netdev_execute_actions(struct dp_netdev_pmd_thread *pmd, |
1895cc8d | 476 | struct dp_packet_batch *, |
41ccaa24 | 477 | bool may_steal, |
4edb9ae9 | 478 | const struct nlattr *actions, |
e4cfed38 | 479 | size_t actions_len); |
65f13b50 | 480 | static void dp_netdev_input(struct dp_netdev_pmd_thread *, |
1895cc8d | 481 | struct dp_packet_batch *, odp_port_t port_no); |
a90ed026 | 482 | static void dp_netdev_recirculate(struct dp_netdev_pmd_thread *, |
1895cc8d | 483 | struct dp_packet_batch *); |
41ccaa24 | 484 | |
6b31e073 | 485 | static void dp_netdev_disable_upcall(struct dp_netdev *); |
ae7ad0a1 | 486 | static void dp_netdev_pmd_reload_done(struct dp_netdev_pmd_thread *pmd); |
65f13b50 AW |
487 | static void dp_netdev_configure_pmd(struct dp_netdev_pmd_thread *pmd, |
488 | struct dp_netdev *dp, int index, | |
bd5131ba | 489 | unsigned core_id, int numa_id); |
1c1e46ed | 490 | static void dp_netdev_destroy_pmd(struct dp_netdev_pmd_thread *pmd); |
f2eee189 | 491 | static void dp_netdev_set_nonpmd(struct dp_netdev *dp); |
b19befae | 492 | static struct dp_netdev_pmd_thread *dp_netdev_get_pmd(struct dp_netdev *dp, |
bd5131ba | 493 | unsigned core_id); |
1c1e46ed AW |
494 | static struct dp_netdev_pmd_thread * |
495 | dp_netdev_pmd_get_next(struct dp_netdev *dp, struct cmap_position *pos); | |
65f13b50 AW |
496 | static void dp_netdev_destroy_all_pmds(struct dp_netdev *dp); |
497 | static void dp_netdev_del_pmds_on_numa(struct dp_netdev *dp, int numa_id); | |
498 | static void dp_netdev_set_pmds_on_numa(struct dp_netdev *dp, int numa_id); | |
cc245ce8 IM |
499 | static void dp_netdev_pmd_clear_poll_list(struct dp_netdev_pmd_thread *pmd); |
500 | static void dp_netdev_del_port_from_pmd(struct dp_netdev_port *port, | |
501 | struct dp_netdev_pmd_thread *pmd); | |
502 | static void dp_netdev_del_port_from_all_pmds(struct dp_netdev *dp, | |
503 | struct dp_netdev_port *port); | |
504 | static void | |
505 | dp_netdev_add_port_to_pmds(struct dp_netdev *dp, struct dp_netdev_port *port); | |
ae7ad0a1 IM |
506 | static void |
507 | dp_netdev_add_rxq_to_pmd(struct dp_netdev_pmd_thread *pmd, | |
508 | struct dp_netdev_port *port, struct netdev_rxq *rx); | |
509 | static struct dp_netdev_pmd_thread * | |
510 | dp_netdev_less_loaded_pmd_on_numa(struct dp_netdev *dp, int numa_id); | |
f2eee189 | 511 | static void dp_netdev_reset_pmd_threads(struct dp_netdev *dp); |
1c1e46ed AW |
512 | static bool dp_netdev_pmd_try_ref(struct dp_netdev_pmd_thread *pmd); |
513 | static void dp_netdev_pmd_unref(struct dp_netdev_pmd_thread *pmd); | |
514 | static void dp_netdev_pmd_flow_flush(struct dp_netdev_pmd_thread *pmd); | |
72865317 | 515 | |
67ad54cb | 516 | static inline bool emc_entry_alive(struct emc_entry *ce); |
9bbf1c3d DDP |
517 | static void emc_clear_entry(struct emc_entry *ce); |
518 | ||
519 | static void | |
520 | emc_cache_init(struct emc_cache *flow_cache) | |
521 | { | |
522 | int i; | |
523 | ||
67ad54cb | 524 | flow_cache->sweep_idx = 0; |
9bbf1c3d DDP |
525 | for (i = 0; i < ARRAY_SIZE(flow_cache->entries); i++) { |
526 | flow_cache->entries[i].flow = NULL; | |
0de8783a | 527 | flow_cache->entries[i].key.hash = 0; |
09b0fa9c | 528 | flow_cache->entries[i].key.len = sizeof(struct miniflow); |
5fcff47b | 529 | flowmap_init(&flow_cache->entries[i].key.mf.map); |
9bbf1c3d DDP |
530 | } |
531 | } | |
532 | ||
533 | static void | |
534 | emc_cache_uninit(struct emc_cache *flow_cache) | |
535 | { | |
536 | int i; | |
537 | ||
538 | for (i = 0; i < ARRAY_SIZE(flow_cache->entries); i++) { | |
539 | emc_clear_entry(&flow_cache->entries[i]); | |
540 | } | |
541 | } | |
542 | ||
67ad54cb AW |
543 | /* Check and clear dead flow references slowly (one entry at each |
544 | * invocation). */ | |
545 | static void | |
546 | emc_cache_slow_sweep(struct emc_cache *flow_cache) | |
547 | { | |
548 | struct emc_entry *entry = &flow_cache->entries[flow_cache->sweep_idx]; | |
549 | ||
550 | if (!emc_entry_alive(entry)) { | |
551 | emc_clear_entry(entry); | |
552 | } | |
553 | flow_cache->sweep_idx = (flow_cache->sweep_idx + 1) & EM_FLOW_HASH_MASK; | |
554 | } | |
555 | ||
c4ea7529 BP |
556 | /* Returns true if 'dpif' is a netdev or dummy dpif, false otherwise. */ |
557 | bool | |
558 | dpif_is_netdev(const struct dpif *dpif) | |
559 | { | |
560 | return dpif->dpif_class->open == dpif_netdev_open; | |
561 | } | |
562 | ||
72865317 BP |
563 | static struct dpif_netdev * |
564 | dpif_netdev_cast(const struct dpif *dpif) | |
565 | { | |
c4ea7529 | 566 | ovs_assert(dpif_is_netdev(dpif)); |
72865317 BP |
567 | return CONTAINER_OF(dpif, struct dpif_netdev, dpif); |
568 | } | |
569 | ||
570 | static struct dp_netdev * | |
571 | get_dp_netdev(const struct dpif *dpif) | |
572 | { | |
573 | return dpif_netdev_cast(dpif)->dp; | |
574 | } | |
6553d06b DDP |
575 | \f |
576 | enum pmd_info_type { | |
ce179f11 IM |
577 | PMD_INFO_SHOW_STATS, /* Show how cpu cycles are spent. */ |
578 | PMD_INFO_CLEAR_STATS, /* Set the cycles count to 0. */ | |
579 | PMD_INFO_SHOW_RXQ /* Show poll-lists of pmd threads. */ | |
6553d06b DDP |
580 | }; |
581 | ||
582 | static void | |
583 | pmd_info_show_stats(struct ds *reply, | |
584 | struct dp_netdev_pmd_thread *pmd, | |
585 | unsigned long long stats[DP_N_STATS], | |
586 | uint64_t cycles[PMD_N_CYCLES]) | |
587 | { | |
588 | unsigned long long total_packets = 0; | |
589 | uint64_t total_cycles = 0; | |
590 | int i; | |
591 | ||
592 | /* These loops subtracts reference values ('*_zero') from the counters. | |
593 | * Since loads and stores are relaxed, it might be possible for a '*_zero' | |
594 | * value to be more recent than the current value we're reading from the | |
595 | * counter. This is not a big problem, since these numbers are not | |
596 | * supposed to be too accurate, but we should at least make sure that | |
597 | * the result is not negative. */ | |
598 | for (i = 0; i < DP_N_STATS; i++) { | |
599 | if (stats[i] > pmd->stats_zero[i]) { | |
600 | stats[i] -= pmd->stats_zero[i]; | |
601 | } else { | |
602 | stats[i] = 0; | |
603 | } | |
604 | ||
605 | if (i != DP_STAT_LOST) { | |
606 | /* Lost packets are already included in DP_STAT_MISS */ | |
607 | total_packets += stats[i]; | |
608 | } | |
609 | } | |
610 | ||
611 | for (i = 0; i < PMD_N_CYCLES; i++) { | |
612 | if (cycles[i] > pmd->cycles_zero[i]) { | |
613 | cycles[i] -= pmd->cycles_zero[i]; | |
614 | } else { | |
615 | cycles[i] = 0; | |
616 | } | |
617 | ||
618 | total_cycles += cycles[i]; | |
619 | } | |
620 | ||
621 | ds_put_cstr(reply, (pmd->core_id == NON_PMD_CORE_ID) | |
622 | ? "main thread" : "pmd thread"); | |
623 | ||
624 | if (pmd->numa_id != OVS_NUMA_UNSPEC) { | |
625 | ds_put_format(reply, " numa_id %d", pmd->numa_id); | |
626 | } | |
d5c199ea | 627 | if (pmd->core_id != OVS_CORE_UNSPEC && pmd->core_id != NON_PMD_CORE_ID) { |
bd5131ba | 628 | ds_put_format(reply, " core_id %u", pmd->core_id); |
6553d06b DDP |
629 | } |
630 | ds_put_cstr(reply, ":\n"); | |
631 | ||
632 | ds_put_format(reply, | |
633 | "\temc hits:%llu\n\tmegaflow hits:%llu\n" | |
634 | "\tmiss:%llu\n\tlost:%llu\n", | |
635 | stats[DP_STAT_EXACT_HIT], stats[DP_STAT_MASKED_HIT], | |
636 | stats[DP_STAT_MISS], stats[DP_STAT_LOST]); | |
637 | ||
638 | if (total_cycles == 0) { | |
639 | return; | |
640 | } | |
641 | ||
642 | ds_put_format(reply, | |
643 | "\tpolling cycles:%"PRIu64" (%.02f%%)\n" | |
644 | "\tprocessing cycles:%"PRIu64" (%.02f%%)\n", | |
645 | cycles[PMD_CYCLES_POLLING], | |
646 | cycles[PMD_CYCLES_POLLING] / (double)total_cycles * 100, | |
647 | cycles[PMD_CYCLES_PROCESSING], | |
648 | cycles[PMD_CYCLES_PROCESSING] / (double)total_cycles * 100); | |
649 | ||
650 | if (total_packets == 0) { | |
651 | return; | |
652 | } | |
653 | ||
654 | ds_put_format(reply, | |
655 | "\tavg cycles per packet: %.02f (%"PRIu64"/%llu)\n", | |
656 | total_cycles / (double)total_packets, | |
657 | total_cycles, total_packets); | |
658 | ||
659 | ds_put_format(reply, | |
660 | "\tavg processing cycles per packet: " | |
661 | "%.02f (%"PRIu64"/%llu)\n", | |
662 | cycles[PMD_CYCLES_PROCESSING] / (double)total_packets, | |
663 | cycles[PMD_CYCLES_PROCESSING], total_packets); | |
664 | } | |
665 | ||
666 | static void | |
667 | pmd_info_clear_stats(struct ds *reply OVS_UNUSED, | |
668 | struct dp_netdev_pmd_thread *pmd, | |
669 | unsigned long long stats[DP_N_STATS], | |
670 | uint64_t cycles[PMD_N_CYCLES]) | |
671 | { | |
672 | int i; | |
673 | ||
674 | /* We cannot write 'stats' and 'cycles' (because they're written by other | |
675 | * threads) and we shouldn't change 'stats' (because they're used to count | |
676 | * datapath stats, which must not be cleared here). Instead, we save the | |
677 | * current values and subtract them from the values to be displayed in the | |
678 | * future */ | |
679 | for (i = 0; i < DP_N_STATS; i++) { | |
680 | pmd->stats_zero[i] = stats[i]; | |
681 | } | |
682 | for (i = 0; i < PMD_N_CYCLES; i++) { | |
683 | pmd->cycles_zero[i] = cycles[i]; | |
684 | } | |
685 | } | |
686 | ||
ce179f11 IM |
687 | static void |
688 | pmd_info_show_rxq(struct ds *reply, struct dp_netdev_pmd_thread *pmd) | |
689 | { | |
690 | if (pmd->core_id != NON_PMD_CORE_ID) { | |
691 | struct rxq_poll *poll; | |
692 | const char *prev_name = NULL; | |
693 | ||
694 | ds_put_format(reply, "pmd thread numa_id %d core_id %u:\n", | |
695 | pmd->numa_id, pmd->core_id); | |
696 | ||
697 | ovs_mutex_lock(&pmd->poll_mutex); | |
698 | LIST_FOR_EACH (poll, node, &pmd->poll_list) { | |
699 | const char *name = netdev_get_name(poll->port->netdev); | |
700 | ||
701 | if (!prev_name || strcmp(name, prev_name)) { | |
702 | if (prev_name) { | |
703 | ds_put_cstr(reply, "\n"); | |
704 | } | |
705 | ds_put_format(reply, "\tport: %s\tqueue-id:", | |
706 | netdev_get_name(poll->port->netdev)); | |
707 | } | |
708 | ds_put_format(reply, " %d", netdev_rxq_get_queue_id(poll->rx)); | |
709 | prev_name = name; | |
710 | } | |
711 | ovs_mutex_unlock(&pmd->poll_mutex); | |
712 | ds_put_cstr(reply, "\n"); | |
713 | } | |
714 | } | |
715 | ||
6553d06b DDP |
716 | static void |
717 | dpif_netdev_pmd_info(struct unixctl_conn *conn, int argc, const char *argv[], | |
718 | void *aux) | |
719 | { | |
720 | struct ds reply = DS_EMPTY_INITIALIZER; | |
721 | struct dp_netdev_pmd_thread *pmd; | |
722 | struct dp_netdev *dp = NULL; | |
723 | enum pmd_info_type type = *(enum pmd_info_type *) aux; | |
724 | ||
725 | ovs_mutex_lock(&dp_netdev_mutex); | |
726 | ||
727 | if (argc == 2) { | |
728 | dp = shash_find_data(&dp_netdevs, argv[1]); | |
729 | } else if (shash_count(&dp_netdevs) == 1) { | |
730 | /* There's only one datapath */ | |
731 | dp = shash_first(&dp_netdevs)->data; | |
732 | } | |
733 | ||
734 | if (!dp) { | |
735 | ovs_mutex_unlock(&dp_netdev_mutex); | |
736 | unixctl_command_reply_error(conn, | |
737 | "please specify an existing datapath"); | |
738 | return; | |
739 | } | |
740 | ||
741 | CMAP_FOR_EACH (pmd, node, &dp->poll_threads) { | |
ce179f11 IM |
742 | if (type == PMD_INFO_SHOW_RXQ) { |
743 | pmd_info_show_rxq(&reply, pmd); | |
744 | } else { | |
745 | unsigned long long stats[DP_N_STATS]; | |
746 | uint64_t cycles[PMD_N_CYCLES]; | |
747 | int i; | |
6553d06b | 748 | |
ce179f11 IM |
749 | /* Read current stats and cycle counters */ |
750 | for (i = 0; i < ARRAY_SIZE(stats); i++) { | |
751 | atomic_read_relaxed(&pmd->stats.n[i], &stats[i]); | |
752 | } | |
753 | for (i = 0; i < ARRAY_SIZE(cycles); i++) { | |
754 | atomic_read_relaxed(&pmd->cycles.n[i], &cycles[i]); | |
755 | } | |
6553d06b | 756 | |
ce179f11 IM |
757 | if (type == PMD_INFO_CLEAR_STATS) { |
758 | pmd_info_clear_stats(&reply, pmd, stats, cycles); | |
759 | } else if (type == PMD_INFO_SHOW_STATS) { | |
760 | pmd_info_show_stats(&reply, pmd, stats, cycles); | |
761 | } | |
6553d06b DDP |
762 | } |
763 | } | |
764 | ||
765 | ovs_mutex_unlock(&dp_netdev_mutex); | |
766 | ||
767 | unixctl_command_reply(conn, ds_cstr(&reply)); | |
768 | ds_destroy(&reply); | |
769 | } | |
770 | \f | |
771 | static int | |
772 | dpif_netdev_init(void) | |
773 | { | |
774 | static enum pmd_info_type show_aux = PMD_INFO_SHOW_STATS, | |
ce179f11 IM |
775 | clear_aux = PMD_INFO_CLEAR_STATS, |
776 | poll_aux = PMD_INFO_SHOW_RXQ; | |
6553d06b DDP |
777 | |
778 | unixctl_command_register("dpif-netdev/pmd-stats-show", "[dp]", | |
779 | 0, 1, dpif_netdev_pmd_info, | |
780 | (void *)&show_aux); | |
781 | unixctl_command_register("dpif-netdev/pmd-stats-clear", "[dp]", | |
782 | 0, 1, dpif_netdev_pmd_info, | |
783 | (void *)&clear_aux); | |
ce179f11 IM |
784 | unixctl_command_register("dpif-netdev/pmd-rxq-show", "[dp]", |
785 | 0, 1, dpif_netdev_pmd_info, | |
786 | (void *)&poll_aux); | |
6553d06b DDP |
787 | return 0; |
788 | } | |
72865317 | 789 | |
2197d7ab | 790 | static int |
2240af25 DDP |
791 | dpif_netdev_enumerate(struct sset *all_dps, |
792 | const struct dpif_class *dpif_class) | |
2197d7ab GL |
793 | { |
794 | struct shash_node *node; | |
795 | ||
97be1538 | 796 | ovs_mutex_lock(&dp_netdev_mutex); |
2197d7ab | 797 | SHASH_FOR_EACH(node, &dp_netdevs) { |
2240af25 DDP |
798 | struct dp_netdev *dp = node->data; |
799 | if (dpif_class != dp->class) { | |
800 | /* 'dp_netdevs' contains both "netdev" and "dummy" dpifs. | |
801 | * If the class doesn't match, skip this dpif. */ | |
802 | continue; | |
803 | } | |
2197d7ab GL |
804 | sset_add(all_dps, node->name); |
805 | } | |
97be1538 | 806 | ovs_mutex_unlock(&dp_netdev_mutex); |
5279f8fd | 807 | |
2197d7ab GL |
808 | return 0; |
809 | } | |
810 | ||
add90f6f EJ |
811 | static bool |
812 | dpif_netdev_class_is_dummy(const struct dpif_class *class) | |
813 | { | |
814 | return class != &dpif_netdev_class; | |
815 | } | |
816 | ||
0aeaabc8 JP |
817 | static const char * |
818 | dpif_netdev_port_open_type(const struct dpif_class *class, const char *type) | |
819 | { | |
820 | return strcmp(type, "internal") ? type | |
add90f6f | 821 | : dpif_netdev_class_is_dummy(class) ? "dummy" |
0aeaabc8 JP |
822 | : "tap"; |
823 | } | |
824 | ||
72865317 BP |
825 | static struct dpif * |
826 | create_dpif_netdev(struct dp_netdev *dp) | |
827 | { | |
462278db | 828 | uint16_t netflow_id = hash_string(dp->name, 0); |
72865317 | 829 | struct dpif_netdev *dpif; |
72865317 | 830 | |
6a8267c5 | 831 | ovs_refcount_ref(&dp->ref_cnt); |
72865317 | 832 | |
72865317 | 833 | dpif = xmalloc(sizeof *dpif); |
614c4892 | 834 | dpif_init(&dpif->dpif, dp->class, dp->name, netflow_id >> 8, netflow_id); |
72865317 | 835 | dpif->dp = dp; |
d33ed218 | 836 | dpif->last_port_seq = seq_read(dp->port_seq); |
72865317 BP |
837 | |
838 | return &dpif->dpif; | |
839 | } | |
840 | ||
4e022ec0 AW |
841 | /* Choose an unused, non-zero port number and return it on success. |
842 | * Return ODPP_NONE on failure. */ | |
843 | static odp_port_t | |
e44768b7 | 844 | choose_port(struct dp_netdev *dp, const char *name) |
59e6d833 | 845 | OVS_REQUIRES(dp->port_mutex) |
e44768b7 | 846 | { |
4e022ec0 | 847 | uint32_t port_no; |
e44768b7 JP |
848 | |
849 | if (dp->class != &dpif_netdev_class) { | |
850 | const char *p; | |
851 | int start_no = 0; | |
852 | ||
853 | /* If the port name begins with "br", start the number search at | |
854 | * 100 to make writing tests easier. */ | |
855 | if (!strncmp(name, "br", 2)) { | |
856 | start_no = 100; | |
857 | } | |
858 | ||
859 | /* If the port name contains a number, try to assign that port number. | |
860 | * This can make writing unit tests easier because port numbers are | |
861 | * predictable. */ | |
862 | for (p = name; *p != '\0'; p++) { | |
863 | if (isdigit((unsigned char) *p)) { | |
864 | port_no = start_no + strtol(p, NULL, 10); | |
ff073a71 BP |
865 | if (port_no > 0 && port_no != odp_to_u32(ODPP_NONE) |
866 | && !dp_netdev_lookup_port(dp, u32_to_odp(port_no))) { | |
4e022ec0 | 867 | return u32_to_odp(port_no); |
e44768b7 JP |
868 | } |
869 | break; | |
870 | } | |
871 | } | |
872 | } | |
873 | ||
ff073a71 BP |
874 | for (port_no = 1; port_no <= UINT16_MAX; port_no++) { |
875 | if (!dp_netdev_lookup_port(dp, u32_to_odp(port_no))) { | |
4e022ec0 | 876 | return u32_to_odp(port_no); |
e44768b7 JP |
877 | } |
878 | } | |
879 | ||
4e022ec0 | 880 | return ODPP_NONE; |
e44768b7 JP |
881 | } |
882 | ||
72865317 | 883 | static int |
614c4892 BP |
884 | create_dp_netdev(const char *name, const struct dpif_class *class, |
885 | struct dp_netdev **dpp) | |
8a4e3a85 | 886 | OVS_REQUIRES(dp_netdev_mutex) |
72865317 BP |
887 | { |
888 | struct dp_netdev *dp; | |
889 | int error; | |
72865317 | 890 | |
462278db | 891 | dp = xzalloc(sizeof *dp); |
8a4e3a85 BP |
892 | shash_add(&dp_netdevs, name, dp); |
893 | ||
894 | *CONST_CAST(const struct dpif_class **, &dp->class) = class; | |
895 | *CONST_CAST(const char **, &dp->name) = xstrdup(name); | |
6a8267c5 | 896 | ovs_refcount_init(&dp->ref_cnt); |
1a65ba85 | 897 | atomic_flag_clear(&dp->destroyed); |
8a4e3a85 | 898 | |
59e6d833 BP |
899 | ovs_mutex_init(&dp->port_mutex); |
900 | cmap_init(&dp->ports); | |
d33ed218 | 901 | dp->port_seq = seq_create(); |
6b31e073 RW |
902 | fat_rwlock_init(&dp->upcall_rwlock); |
903 | ||
904 | /* Disable upcalls by default. */ | |
905 | dp_netdev_disable_upcall(dp); | |
623540e4 | 906 | dp->upcall_aux = NULL; |
6b31e073 | 907 | dp->upcall_cb = NULL; |
e44768b7 | 908 | |
65f13b50 AW |
909 | cmap_init(&dp->poll_threads); |
910 | ovs_mutex_init_recursive(&dp->non_pmd_mutex); | |
911 | ovsthread_key_create(&dp->per_pmd_key, NULL); | |
912 | ||
f2eee189 | 913 | dp_netdev_set_nonpmd(dp); |
65f13b50 | 914 | |
59e6d833 | 915 | ovs_mutex_lock(&dp->port_mutex); |
4e022ec0 | 916 | error = do_add_port(dp, name, "internal", ODPP_LOCAL); |
59e6d833 | 917 | ovs_mutex_unlock(&dp->port_mutex); |
72865317 BP |
918 | if (error) { |
919 | dp_netdev_free(dp); | |
462278db | 920 | return error; |
72865317 BP |
921 | } |
922 | ||
a36de779 | 923 | dp->last_tnl_conf_seq = seq_read(tnl_conf_seq); |
462278db | 924 | *dpp = dp; |
72865317 BP |
925 | return 0; |
926 | } | |
927 | ||
928 | static int | |
614c4892 | 929 | dpif_netdev_open(const struct dpif_class *class, const char *name, |
4a387741 | 930 | bool create, struct dpif **dpifp) |
72865317 | 931 | { |
462278db | 932 | struct dp_netdev *dp; |
5279f8fd | 933 | int error; |
462278db | 934 | |
97be1538 | 935 | ovs_mutex_lock(&dp_netdev_mutex); |
462278db BP |
936 | dp = shash_find_data(&dp_netdevs, name); |
937 | if (!dp) { | |
5279f8fd | 938 | error = create ? create_dp_netdev(name, class, &dp) : ENODEV; |
72865317 | 939 | } else { |
5279f8fd BP |
940 | error = (dp->class != class ? EINVAL |
941 | : create ? EEXIST | |
942 | : 0); | |
943 | } | |
944 | if (!error) { | |
945 | *dpifp = create_dpif_netdev(dp); | |
6b31e073 | 946 | dp->dpif = *dpifp; |
72865317 | 947 | } |
97be1538 | 948 | ovs_mutex_unlock(&dp_netdev_mutex); |
462278db | 949 | |
5279f8fd | 950 | return error; |
72865317 BP |
951 | } |
952 | ||
88ace79b DDP |
953 | static void |
954 | dp_netdev_destroy_upcall_lock(struct dp_netdev *dp) | |
955 | OVS_NO_THREAD_SAFETY_ANALYSIS | |
956 | { | |
957 | /* Check that upcalls are disabled, i.e. that the rwlock is taken */ | |
958 | ovs_assert(fat_rwlock_tryrdlock(&dp->upcall_rwlock)); | |
959 | ||
960 | /* Before freeing a lock we should release it */ | |
961 | fat_rwlock_unlock(&dp->upcall_rwlock); | |
962 | fat_rwlock_destroy(&dp->upcall_rwlock); | |
963 | } | |
964 | ||
8a4e3a85 BP |
965 | /* Requires dp_netdev_mutex so that we can't get a new reference to 'dp' |
966 | * through the 'dp_netdevs' shash while freeing 'dp'. */ | |
1ba530f4 BP |
967 | static void |
968 | dp_netdev_free(struct dp_netdev *dp) | |
8a4e3a85 | 969 | OVS_REQUIRES(dp_netdev_mutex) |
1ba530f4 | 970 | { |
59e6d833 | 971 | struct dp_netdev_port *port; |
4ad28026 | 972 | |
8a4e3a85 BP |
973 | shash_find_and_delete(&dp_netdevs, dp->name); |
974 | ||
65f13b50 AW |
975 | dp_netdev_destroy_all_pmds(dp); |
976 | ovs_mutex_destroy(&dp->non_pmd_mutex); | |
977 | ovsthread_key_delete(dp->per_pmd_key); | |
6c3eee82 | 978 | |
59e6d833 | 979 | ovs_mutex_lock(&dp->port_mutex); |
a532e683 | 980 | CMAP_FOR_EACH (port, node, &dp->ports) { |
d916785c | 981 | /* PMD threads are destroyed here. do_del_port() cannot quiesce */ |
c40b890f | 982 | do_del_port(dp, port); |
1ba530f4 | 983 | } |
59e6d833 | 984 | ovs_mutex_unlock(&dp->port_mutex); |
d916785c | 985 | cmap_destroy(&dp->poll_threads); |
51852a57 | 986 | |
d33ed218 | 987 | seq_destroy(dp->port_seq); |
59e6d833 | 988 | cmap_destroy(&dp->ports); |
88ace79b DDP |
989 | |
990 | /* Upcalls must be disabled at this point */ | |
991 | dp_netdev_destroy_upcall_lock(dp); | |
9bbf1c3d | 992 | |
f2eee189 | 993 | free(dp->pmd_cmask); |
8a4e3a85 | 994 | free(CONST_CAST(char *, dp->name)); |
72865317 BP |
995 | free(dp); |
996 | } | |
997 | ||
8a4e3a85 BP |
998 | static void |
999 | dp_netdev_unref(struct dp_netdev *dp) | |
1000 | { | |
1001 | if (dp) { | |
1002 | /* Take dp_netdev_mutex so that, if dp->ref_cnt falls to zero, we can't | |
1003 | * get a new reference to 'dp' through the 'dp_netdevs' shash. */ | |
1004 | ovs_mutex_lock(&dp_netdev_mutex); | |
24f83812 | 1005 | if (ovs_refcount_unref_relaxed(&dp->ref_cnt) == 1) { |
8a4e3a85 BP |
1006 | dp_netdev_free(dp); |
1007 | } | |
1008 | ovs_mutex_unlock(&dp_netdev_mutex); | |
1009 | } | |
1010 | } | |
1011 | ||
72865317 BP |
1012 | static void |
1013 | dpif_netdev_close(struct dpif *dpif) | |
1014 | { | |
1015 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
5279f8fd | 1016 | |
8a4e3a85 | 1017 | dp_netdev_unref(dp); |
72865317 BP |
1018 | free(dpif); |
1019 | } | |
1020 | ||
1021 | static int | |
7dab847a | 1022 | dpif_netdev_destroy(struct dpif *dpif) |
72865317 BP |
1023 | { |
1024 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
5279f8fd | 1025 | |
6a8267c5 | 1026 | if (!atomic_flag_test_and_set(&dp->destroyed)) { |
24f83812 | 1027 | if (ovs_refcount_unref_relaxed(&dp->ref_cnt) == 1) { |
6a8267c5 BP |
1028 | /* Can't happen: 'dpif' still owns a reference to 'dp'. */ |
1029 | OVS_NOT_REACHED(); | |
1030 | } | |
1031 | } | |
5279f8fd | 1032 | |
72865317 BP |
1033 | return 0; |
1034 | } | |
1035 | ||
eb94da30 DDP |
1036 | /* Add 'n' to the atomic variable 'var' non-atomically and using relaxed |
1037 | * load/store semantics. While the increment is not atomic, the load and | |
1038 | * store operations are, making it impossible to read inconsistent values. | |
1039 | * | |
1040 | * This is used to update thread local stats counters. */ | |
1041 | static void | |
1042 | non_atomic_ullong_add(atomic_ullong *var, unsigned long long n) | |
1043 | { | |
1044 | unsigned long long tmp; | |
1045 | ||
1046 | atomic_read_relaxed(var, &tmp); | |
1047 | tmp += n; | |
1048 | atomic_store_relaxed(var, tmp); | |
1049 | } | |
1050 | ||
72865317 | 1051 | static int |
a8d9304d | 1052 | dpif_netdev_get_stats(const struct dpif *dpif, struct dpif_dp_stats *stats) |
72865317 BP |
1053 | { |
1054 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
1c1e46ed | 1055 | struct dp_netdev_pmd_thread *pmd; |
8a4e3a85 | 1056 | |
1c1e46ed AW |
1057 | stats->n_flows = stats->n_hit = stats->n_missed = stats->n_lost = 0; |
1058 | CMAP_FOR_EACH (pmd, node, &dp->poll_threads) { | |
eb94da30 | 1059 | unsigned long long n; |
1c1e46ed | 1060 | stats->n_flows += cmap_count(&pmd->flow_table); |
eb94da30 | 1061 | |
abcf3ef4 DDP |
1062 | atomic_read_relaxed(&pmd->stats.n[DP_STAT_MASKED_HIT], &n); |
1063 | stats->n_hit += n; | |
1064 | atomic_read_relaxed(&pmd->stats.n[DP_STAT_EXACT_HIT], &n); | |
eb94da30 DDP |
1065 | stats->n_hit += n; |
1066 | atomic_read_relaxed(&pmd->stats.n[DP_STAT_MISS], &n); | |
1067 | stats->n_missed += n; | |
1068 | atomic_read_relaxed(&pmd->stats.n[DP_STAT_LOST], &n); | |
1069 | stats->n_lost += n; | |
51852a57 | 1070 | } |
1ce3fa06 | 1071 | stats->n_masks = UINT32_MAX; |
847108dc | 1072 | stats->n_mask_hit = UINT64_MAX; |
5279f8fd | 1073 | |
72865317 BP |
1074 | return 0; |
1075 | } | |
1076 | ||
e4cfed38 | 1077 | static void |
65f13b50 | 1078 | dp_netdev_reload_pmd__(struct dp_netdev_pmd_thread *pmd) |
e4cfed38 | 1079 | { |
65f13b50 AW |
1080 | int old_seq; |
1081 | ||
accf8626 AW |
1082 | if (pmd->core_id == NON_PMD_CORE_ID) { |
1083 | return; | |
1084 | } | |
1085 | ||
1086 | ovs_mutex_lock(&pmd->cond_mutex); | |
65f13b50 | 1087 | atomic_add_relaxed(&pmd->change_seq, 1, &old_seq); |
accf8626 AW |
1088 | ovs_mutex_cond_wait(&pmd->cond, &pmd->cond_mutex); |
1089 | ovs_mutex_unlock(&pmd->cond_mutex); | |
65f13b50 | 1090 | } |
e4cfed38 | 1091 | |
59e6d833 BP |
1092 | static uint32_t |
1093 | hash_port_no(odp_port_t port_no) | |
1094 | { | |
1095 | return hash_int(odp_to_u32(port_no), 0); | |
1096 | } | |
1097 | ||
72865317 | 1098 | static int |
c3827f61 | 1099 | do_add_port(struct dp_netdev *dp, const char *devname, const char *type, |
4e022ec0 | 1100 | odp_port_t port_no) |
59e6d833 | 1101 | OVS_REQUIRES(dp->port_mutex) |
72865317 | 1102 | { |
4b609110 | 1103 | struct netdev_saved_flags *sf; |
72865317 BP |
1104 | struct dp_netdev_port *port; |
1105 | struct netdev *netdev; | |
2499a8ce | 1106 | enum netdev_flags flags; |
0cbfe35d | 1107 | const char *open_type; |
d17f4f08 DDP |
1108 | int error = 0; |
1109 | int i, n_open_rxqs = 0; | |
72865317 | 1110 | |
17050610 BP |
1111 | /* Reject devices already in 'dp'. */ |
1112 | if (!get_port_by_name(dp, devname, &port)) { | |
d17f4f08 DDP |
1113 | error = EEXIST; |
1114 | goto out; | |
17050610 | 1115 | } |
72865317 BP |
1116 | |
1117 | /* Open and validate network device. */ | |
0aeaabc8 | 1118 | open_type = dpif_netdev_port_open_type(dp->class, type); |
0cbfe35d | 1119 | error = netdev_open(devname, open_type, &netdev); |
72865317 | 1120 | if (error) { |
d17f4f08 | 1121 | goto out; |
72865317 | 1122 | } |
72865317 BP |
1123 | /* XXX reject non-Ethernet devices */ |
1124 | ||
2499a8ce AC |
1125 | netdev_get_flags(netdev, &flags); |
1126 | if (flags & NETDEV_LOOPBACK) { | |
1127 | VLOG_ERR("%s: cannot add a loopback device", devname); | |
d17f4f08 DDP |
1128 | error = EINVAL; |
1129 | goto out_close; | |
2499a8ce AC |
1130 | } |
1131 | ||
5a034064 AW |
1132 | if (netdev_is_pmd(netdev)) { |
1133 | int n_cores = ovs_numa_get_n_cores(); | |
1134 | ||
1135 | if (n_cores == OVS_CORE_UNSPEC) { | |
1136 | VLOG_ERR("%s, cannot get cpu core info", devname); | |
d17f4f08 DDP |
1137 | error = ENOENT; |
1138 | goto out_close; | |
5a034064 AW |
1139 | } |
1140 | /* There can only be ovs_numa_get_n_cores() pmd threads, | |
3bcc10c0 DDP |
1141 | * so creates a txq for each, and one extra for the non |
1142 | * pmd threads. */ | |
a14b8947 IM |
1143 | error = netdev_set_multiq(netdev, n_cores + 1, |
1144 | netdev_requested_n_rxq(netdev)); | |
7251515e | 1145 | if (error && (error != EOPNOTSUPP)) { |
5a034064 | 1146 | VLOG_ERR("%s, cannot set multiq", devname); |
d17f4f08 | 1147 | goto out_close; |
5a034064 AW |
1148 | } |
1149 | } | |
e4cfed38 | 1150 | port = xzalloc(sizeof *port); |
35303d71 | 1151 | port->port_no = port_no; |
e4cfed38 | 1152 | port->netdev = netdev; |
490e82af DDP |
1153 | port->n_rxq = netdev_n_rxq(netdev); |
1154 | port->rxq = xmalloc(sizeof *port->rxq * port->n_rxq); | |
e4cfed38 | 1155 | port->type = xstrdup(type); |
a14b8947 | 1156 | port->latest_requested_n_rxq = netdev_requested_n_rxq(netdev); |
d17f4f08 | 1157 | |
490e82af | 1158 | for (i = 0; i < port->n_rxq; i++) { |
55c955bd | 1159 | error = netdev_rxq_open(netdev, &port->rxq[i], i); |
d17f4f08 | 1160 | if (error) { |
55c955bd PS |
1161 | VLOG_ERR("%s: cannot receive packets on this network device (%s)", |
1162 | devname, ovs_strerror(errno)); | |
d17f4f08 | 1163 | goto out_rxq_close; |
55c955bd | 1164 | } |
d17f4f08 | 1165 | n_open_rxqs++; |
7b6b0ef4 BP |
1166 | } |
1167 | ||
4b609110 | 1168 | error = netdev_turn_flags_on(netdev, NETDEV_PROMISC, &sf); |
72865317 | 1169 | if (error) { |
d17f4f08 | 1170 | goto out_rxq_close; |
72865317 | 1171 | } |
4b609110 | 1172 | port->sf = sf; |
e4cfed38 | 1173 | |
f7d63652 AW |
1174 | cmap_insert(&dp->ports, &port->node, hash_port_no(port_no)); |
1175 | ||
e4cfed38 | 1176 | if (netdev_is_pmd(netdev)) { |
cc245ce8 | 1177 | dp_netdev_add_port_to_pmds(dp, port); |
e4cfed38 | 1178 | } |
d33ed218 | 1179 | seq_change(dp->port_seq); |
72865317 BP |
1180 | |
1181 | return 0; | |
d17f4f08 DDP |
1182 | |
1183 | out_rxq_close: | |
1184 | for (i = 0; i < n_open_rxqs; i++) { | |
1185 | netdev_rxq_close(port->rxq[i]); | |
1186 | } | |
1187 | free(port->type); | |
1188 | free(port->rxq); | |
1189 | free(port); | |
1190 | out_close: | |
1191 | netdev_close(netdev); | |
1192 | out: | |
1193 | return error; | |
72865317 BP |
1194 | } |
1195 | ||
247527db BP |
1196 | static int |
1197 | dpif_netdev_port_add(struct dpif *dpif, struct netdev *netdev, | |
4e022ec0 | 1198 | odp_port_t *port_nop) |
247527db BP |
1199 | { |
1200 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
3aa30359 BP |
1201 | char namebuf[NETDEV_VPORT_NAME_BUFSIZE]; |
1202 | const char *dpif_port; | |
4e022ec0 | 1203 | odp_port_t port_no; |
5279f8fd | 1204 | int error; |
247527db | 1205 | |
59e6d833 | 1206 | ovs_mutex_lock(&dp->port_mutex); |
3aa30359 | 1207 | dpif_port = netdev_vport_get_dpif_port(netdev, namebuf, sizeof namebuf); |
4e022ec0 | 1208 | if (*port_nop != ODPP_NONE) { |
ff073a71 BP |
1209 | port_no = *port_nop; |
1210 | error = dp_netdev_lookup_port(dp, *port_nop) ? EBUSY : 0; | |
232dfa4a | 1211 | } else { |
3aa30359 | 1212 | port_no = choose_port(dp, dpif_port); |
5279f8fd | 1213 | error = port_no == ODPP_NONE ? EFBIG : 0; |
232dfa4a | 1214 | } |
5279f8fd | 1215 | if (!error) { |
247527db | 1216 | *port_nop = port_no; |
5279f8fd | 1217 | error = do_add_port(dp, dpif_port, netdev_get_type(netdev), port_no); |
247527db | 1218 | } |
59e6d833 | 1219 | ovs_mutex_unlock(&dp->port_mutex); |
5279f8fd BP |
1220 | |
1221 | return error; | |
72865317 BP |
1222 | } |
1223 | ||
1224 | static int | |
4e022ec0 | 1225 | dpif_netdev_port_del(struct dpif *dpif, odp_port_t port_no) |
72865317 BP |
1226 | { |
1227 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
5279f8fd BP |
1228 | int error; |
1229 | ||
59e6d833 | 1230 | ovs_mutex_lock(&dp->port_mutex); |
c40b890f BP |
1231 | if (port_no == ODPP_LOCAL) { |
1232 | error = EINVAL; | |
1233 | } else { | |
1234 | struct dp_netdev_port *port; | |
1235 | ||
1236 | error = get_port_by_number(dp, port_no, &port); | |
1237 | if (!error) { | |
1238 | do_del_port(dp, port); | |
1239 | } | |
1240 | } | |
59e6d833 | 1241 | ovs_mutex_unlock(&dp->port_mutex); |
5279f8fd BP |
1242 | |
1243 | return error; | |
72865317 BP |
1244 | } |
1245 | ||
1246 | static bool | |
4e022ec0 | 1247 | is_valid_port_number(odp_port_t port_no) |
72865317 | 1248 | { |
ff073a71 BP |
1249 | return port_no != ODPP_NONE; |
1250 | } | |
1251 | ||
1252 | static struct dp_netdev_port * | |
1253 | dp_netdev_lookup_port(const struct dp_netdev *dp, odp_port_t port_no) | |
1254 | { | |
1255 | struct dp_netdev_port *port; | |
1256 | ||
59e6d833 | 1257 | CMAP_FOR_EACH_WITH_HASH (port, node, hash_port_no(port_no), &dp->ports) { |
35303d71 | 1258 | if (port->port_no == port_no) { |
ff073a71 BP |
1259 | return port; |
1260 | } | |
1261 | } | |
1262 | return NULL; | |
72865317 BP |
1263 | } |
1264 | ||
1265 | static int | |
1266 | get_port_by_number(struct dp_netdev *dp, | |
4e022ec0 | 1267 | odp_port_t port_no, struct dp_netdev_port **portp) |
72865317 BP |
1268 | { |
1269 | if (!is_valid_port_number(port_no)) { | |
1270 | *portp = NULL; | |
1271 | return EINVAL; | |
1272 | } else { | |
ff073a71 | 1273 | *portp = dp_netdev_lookup_port(dp, port_no); |
72865317 BP |
1274 | return *portp ? 0 : ENOENT; |
1275 | } | |
1276 | } | |
1277 | ||
b284085e | 1278 | static void |
62453dad | 1279 | port_destroy(struct dp_netdev_port *port) |
b284085e | 1280 | { |
62453dad DDP |
1281 | if (!port) { |
1282 | return; | |
b284085e | 1283 | } |
b284085e | 1284 | |
62453dad DDP |
1285 | netdev_close(port->netdev); |
1286 | netdev_restore_flags(port->sf); | |
accf8626 | 1287 | |
62453dad DDP |
1288 | for (unsigned i = 0; i < port->n_rxq; i++) { |
1289 | netdev_rxq_close(port->rxq[i]); | |
b284085e | 1290 | } |
62453dad DDP |
1291 | |
1292 | free(port->rxq); | |
1293 | free(port->type); | |
1294 | free(port); | |
b284085e PS |
1295 | } |
1296 | ||
72865317 BP |
1297 | static int |
1298 | get_port_by_name(struct dp_netdev *dp, | |
1299 | const char *devname, struct dp_netdev_port **portp) | |
59e6d833 | 1300 | OVS_REQUIRES(dp->port_mutex) |
72865317 BP |
1301 | { |
1302 | struct dp_netdev_port *port; | |
1303 | ||
a532e683 | 1304 | CMAP_FOR_EACH (port, node, &dp->ports) { |
3efb6063 | 1305 | if (!strcmp(netdev_get_name(port->netdev), devname)) { |
72865317 BP |
1306 | *portp = port; |
1307 | return 0; | |
1308 | } | |
1309 | } | |
1310 | return ENOENT; | |
1311 | } | |
1312 | ||
347ba9bb IM |
1313 | static int |
1314 | get_n_pmd_threads(struct dp_netdev *dp) | |
1315 | { | |
1316 | /* There is one non pmd thread in dp->poll_threads */ | |
1317 | return cmap_count(&dp->poll_threads) - 1; | |
1318 | } | |
1319 | ||
65f13b50 AW |
1320 | static int |
1321 | get_n_pmd_threads_on_numa(struct dp_netdev *dp, int numa_id) | |
1322 | { | |
1323 | struct dp_netdev_pmd_thread *pmd; | |
1324 | int n_pmds = 0; | |
1325 | ||
1326 | CMAP_FOR_EACH (pmd, node, &dp->poll_threads) { | |
1327 | if (pmd->numa_id == numa_id) { | |
1328 | n_pmds++; | |
1329 | } | |
1330 | } | |
1331 | ||
1332 | return n_pmds; | |
1333 | } | |
1334 | ||
1335 | /* Returns 'true' if there is a port with pmd netdev and the netdev | |
1336 | * is on numa node 'numa_id'. */ | |
1337 | static bool | |
1338 | has_pmd_port_for_numa(struct dp_netdev *dp, int numa_id) | |
1339 | { | |
1340 | struct dp_netdev_port *port; | |
1341 | ||
1342 | CMAP_FOR_EACH (port, node, &dp->ports) { | |
1343 | if (netdev_is_pmd(port->netdev) | |
1344 | && netdev_get_numa_id(port->netdev) == numa_id) { | |
1345 | return true; | |
1346 | } | |
1347 | } | |
1348 | ||
1349 | return false; | |
1350 | } | |
1351 | ||
1352 | ||
c40b890f BP |
1353 | static void |
1354 | do_del_port(struct dp_netdev *dp, struct dp_netdev_port *port) | |
59e6d833 | 1355 | OVS_REQUIRES(dp->port_mutex) |
72865317 | 1356 | { |
35303d71 | 1357 | cmap_remove(&dp->ports, &port->node, hash_odp_port(port->port_no)); |
d33ed218 | 1358 | seq_change(dp->port_seq); |
e4cfed38 | 1359 | if (netdev_is_pmd(port->netdev)) { |
65f13b50 AW |
1360 | int numa_id = netdev_get_numa_id(port->netdev); |
1361 | ||
ae7ad0a1 IM |
1362 | /* PMD threads can not be on invalid numa node. */ |
1363 | ovs_assert(ovs_numa_numa_id_is_valid(numa_id)); | |
65f13b50 | 1364 | /* If there is no netdev on the numa node, deletes the pmd threads |
ae7ad0a1 | 1365 | * for that numa. Else, deletes the queues from polling lists. */ |
65f13b50 AW |
1366 | if (!has_pmd_port_for_numa(dp, numa_id)) { |
1367 | dp_netdev_del_pmds_on_numa(dp, numa_id); | |
ae7ad0a1 | 1368 | } else { |
cc245ce8 | 1369 | dp_netdev_del_port_from_all_pmds(dp, port); |
65f13b50 | 1370 | } |
e4cfed38 | 1371 | } |
72865317 | 1372 | |
62453dad | 1373 | port_destroy(port); |
72865317 BP |
1374 | } |
1375 | ||
1376 | static void | |
4c738a8d BP |
1377 | answer_port_query(const struct dp_netdev_port *port, |
1378 | struct dpif_port *dpif_port) | |
72865317 | 1379 | { |
3efb6063 | 1380 | dpif_port->name = xstrdup(netdev_get_name(port->netdev)); |
0cbfe35d | 1381 | dpif_port->type = xstrdup(port->type); |
35303d71 | 1382 | dpif_port->port_no = port->port_no; |
72865317 BP |
1383 | } |
1384 | ||
1385 | static int | |
4e022ec0 | 1386 | dpif_netdev_port_query_by_number(const struct dpif *dpif, odp_port_t port_no, |
4c738a8d | 1387 | struct dpif_port *dpif_port) |
72865317 BP |
1388 | { |
1389 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
1390 | struct dp_netdev_port *port; | |
1391 | int error; | |
1392 | ||
1393 | error = get_port_by_number(dp, port_no, &port); | |
4afba28d | 1394 | if (!error && dpif_port) { |
4c738a8d | 1395 | answer_port_query(port, dpif_port); |
72865317 | 1396 | } |
5279f8fd | 1397 | |
72865317 BP |
1398 | return error; |
1399 | } | |
1400 | ||
1401 | static int | |
1402 | dpif_netdev_port_query_by_name(const struct dpif *dpif, const char *devname, | |
4c738a8d | 1403 | struct dpif_port *dpif_port) |
72865317 BP |
1404 | { |
1405 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
1406 | struct dp_netdev_port *port; | |
1407 | int error; | |
1408 | ||
59e6d833 | 1409 | ovs_mutex_lock(&dp->port_mutex); |
72865317 | 1410 | error = get_port_by_name(dp, devname, &port); |
4afba28d | 1411 | if (!error && dpif_port) { |
4c738a8d | 1412 | answer_port_query(port, dpif_port); |
72865317 | 1413 | } |
59e6d833 | 1414 | ovs_mutex_unlock(&dp->port_mutex); |
5279f8fd | 1415 | |
72865317 BP |
1416 | return error; |
1417 | } | |
1418 | ||
61e7deb1 BP |
1419 | static void |
1420 | dp_netdev_flow_free(struct dp_netdev_flow *flow) | |
1421 | { | |
61e7deb1 | 1422 | dp_netdev_actions_free(dp_netdev_flow_get_actions(flow)); |
61e7deb1 BP |
1423 | free(flow); |
1424 | } | |
1425 | ||
ed79f89a DDP |
1426 | static void dp_netdev_flow_unref(struct dp_netdev_flow *flow) |
1427 | { | |
1428 | if (ovs_refcount_unref_relaxed(&flow->ref_cnt) == 1) { | |
1429 | ovsrcu_postpone(dp_netdev_flow_free, flow); | |
1430 | } | |
1431 | } | |
1432 | ||
70e5ed6f JS |
1433 | static uint32_t |
1434 | dp_netdev_flow_hash(const ovs_u128 *ufid) | |
1435 | { | |
1436 | return ufid->u32[0]; | |
1437 | } | |
1438 | ||
72865317 | 1439 | static void |
1c1e46ed AW |
1440 | dp_netdev_pmd_remove_flow(struct dp_netdev_pmd_thread *pmd, |
1441 | struct dp_netdev_flow *flow) | |
1442 | OVS_REQUIRES(pmd->flow_mutex) | |
72865317 | 1443 | { |
9f361d6b | 1444 | struct cmap_node *node = CONST_CAST(struct cmap_node *, &flow->node); |
2c0ea78f | 1445 | |
1c1e46ed AW |
1446 | dpcls_remove(&pmd->cls, &flow->cr); |
1447 | cmap_remove(&pmd->flow_table, node, dp_netdev_flow_hash(&flow->ufid)); | |
9bbf1c3d | 1448 | flow->dead = true; |
ed79f89a DDP |
1449 | |
1450 | dp_netdev_flow_unref(flow); | |
72865317 BP |
1451 | } |
1452 | ||
1453 | static void | |
1c1e46ed | 1454 | dp_netdev_pmd_flow_flush(struct dp_netdev_pmd_thread *pmd) |
72865317 | 1455 | { |
78c8df12 | 1456 | struct dp_netdev_flow *netdev_flow; |
72865317 | 1457 | |
1c1e46ed AW |
1458 | ovs_mutex_lock(&pmd->flow_mutex); |
1459 | CMAP_FOR_EACH (netdev_flow, node, &pmd->flow_table) { | |
1460 | dp_netdev_pmd_remove_flow(pmd, netdev_flow); | |
72865317 | 1461 | } |
1c1e46ed | 1462 | ovs_mutex_unlock(&pmd->flow_mutex); |
72865317 BP |
1463 | } |
1464 | ||
1465 | static int | |
1466 | dpif_netdev_flow_flush(struct dpif *dpif) | |
1467 | { | |
1468 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
1c1e46ed AW |
1469 | struct dp_netdev_pmd_thread *pmd; |
1470 | ||
1471 | CMAP_FOR_EACH (pmd, node, &dp->poll_threads) { | |
1472 | dp_netdev_pmd_flow_flush(pmd); | |
1473 | } | |
5279f8fd | 1474 | |
72865317 BP |
1475 | return 0; |
1476 | } | |
1477 | ||
b0ec0f27 | 1478 | struct dp_netdev_port_state { |
59e6d833 | 1479 | struct cmap_position position; |
4c738a8d | 1480 | char *name; |
b0ec0f27 BP |
1481 | }; |
1482 | ||
1483 | static int | |
1484 | dpif_netdev_port_dump_start(const struct dpif *dpif OVS_UNUSED, void **statep) | |
1485 | { | |
1486 | *statep = xzalloc(sizeof(struct dp_netdev_port_state)); | |
1487 | return 0; | |
1488 | } | |
1489 | ||
72865317 | 1490 | static int |
b0ec0f27 | 1491 | dpif_netdev_port_dump_next(const struct dpif *dpif, void *state_, |
4c738a8d | 1492 | struct dpif_port *dpif_port) |
72865317 | 1493 | { |
b0ec0f27 | 1494 | struct dp_netdev_port_state *state = state_; |
72865317 | 1495 | struct dp_netdev *dp = get_dp_netdev(dpif); |
59e6d833 | 1496 | struct cmap_node *node; |
ff073a71 | 1497 | int retval; |
72865317 | 1498 | |
59e6d833 | 1499 | node = cmap_next_position(&dp->ports, &state->position); |
ff073a71 BP |
1500 | if (node) { |
1501 | struct dp_netdev_port *port; | |
5279f8fd | 1502 | |
ff073a71 BP |
1503 | port = CONTAINER_OF(node, struct dp_netdev_port, node); |
1504 | ||
1505 | free(state->name); | |
1506 | state->name = xstrdup(netdev_get_name(port->netdev)); | |
1507 | dpif_port->name = state->name; | |
1508 | dpif_port->type = port->type; | |
35303d71 | 1509 | dpif_port->port_no = port->port_no; |
ff073a71 BP |
1510 | |
1511 | retval = 0; | |
1512 | } else { | |
1513 | retval = EOF; | |
72865317 | 1514 | } |
5279f8fd | 1515 | |
ff073a71 | 1516 | return retval; |
b0ec0f27 BP |
1517 | } |
1518 | ||
1519 | static int | |
4c738a8d | 1520 | dpif_netdev_port_dump_done(const struct dpif *dpif OVS_UNUSED, void *state_) |
b0ec0f27 | 1521 | { |
4c738a8d BP |
1522 | struct dp_netdev_port_state *state = state_; |
1523 | free(state->name); | |
b0ec0f27 BP |
1524 | free(state); |
1525 | return 0; | |
72865317 BP |
1526 | } |
1527 | ||
1528 | static int | |
67a4917b | 1529 | dpif_netdev_port_poll(const struct dpif *dpif_, char **devnamep OVS_UNUSED) |
72865317 BP |
1530 | { |
1531 | struct dpif_netdev *dpif = dpif_netdev_cast(dpif_); | |
d33ed218 | 1532 | uint64_t new_port_seq; |
5279f8fd BP |
1533 | int error; |
1534 | ||
d33ed218 BP |
1535 | new_port_seq = seq_read(dpif->dp->port_seq); |
1536 | if (dpif->last_port_seq != new_port_seq) { | |
1537 | dpif->last_port_seq = new_port_seq; | |
5279f8fd | 1538 | error = ENOBUFS; |
72865317 | 1539 | } else { |
5279f8fd | 1540 | error = EAGAIN; |
72865317 | 1541 | } |
5279f8fd BP |
1542 | |
1543 | return error; | |
72865317 BP |
1544 | } |
1545 | ||
1546 | static void | |
1547 | dpif_netdev_port_poll_wait(const struct dpif *dpif_) | |
1548 | { | |
1549 | struct dpif_netdev *dpif = dpif_netdev_cast(dpif_); | |
5279f8fd | 1550 | |
d33ed218 | 1551 | seq_wait(dpif->dp->port_seq, dpif->last_port_seq); |
8a4e3a85 BP |
1552 | } |
1553 | ||
1554 | static struct dp_netdev_flow * | |
0de8783a | 1555 | dp_netdev_flow_cast(const struct dpcls_rule *cr) |
8a4e3a85 BP |
1556 | { |
1557 | return cr ? CONTAINER_OF(cr, struct dp_netdev_flow, cr) : NULL; | |
72865317 BP |
1558 | } |
1559 | ||
9bbf1c3d DDP |
1560 | static bool dp_netdev_flow_ref(struct dp_netdev_flow *flow) |
1561 | { | |
1562 | return ovs_refcount_try_ref_rcu(&flow->ref_cnt); | |
1563 | } | |
1564 | ||
79df317f DDP |
1565 | /* netdev_flow_key utilities. |
1566 | * | |
1567 | * netdev_flow_key is basically a miniflow. We use these functions | |
1568 | * (netdev_flow_key_clone, netdev_flow_key_equal, ...) instead of the miniflow | |
1569 | * functions (miniflow_clone_inline, miniflow_equal, ...), because: | |
1570 | * | |
1571 | * - Since we are dealing exclusively with miniflows created by | |
1572 | * miniflow_extract(), if the map is different the miniflow is different. | |
1573 | * Therefore we can be faster by comparing the map and the miniflow in a | |
1574 | * single memcmp(). | |
5fcff47b | 1575 | * - These functions can be inlined by the compiler. */ |
79df317f | 1576 | |
361d808d | 1577 | /* Given the number of bits set in miniflow's maps, returns the size of the |
caeb4906 | 1578 | * 'netdev_flow_key.mf' */ |
361d808d JR |
1579 | static inline size_t |
1580 | netdev_flow_key_size(size_t flow_u64s) | |
79df317f | 1581 | { |
361d808d | 1582 | return sizeof(struct miniflow) + MINIFLOW_VALUES_SIZE(flow_u64s); |
79df317f DDP |
1583 | } |
1584 | ||
79df317f DDP |
1585 | static inline bool |
1586 | netdev_flow_key_equal(const struct netdev_flow_key *a, | |
0de8783a JR |
1587 | const struct netdev_flow_key *b) |
1588 | { | |
caeb4906 JR |
1589 | /* 'b->len' may be not set yet. */ |
1590 | return a->hash == b->hash && !memcmp(&a->mf, &b->mf, a->len); | |
0de8783a JR |
1591 | } |
1592 | ||
1593 | /* Used to compare 'netdev_flow_key' in the exact match cache to a miniflow. | |
d79a39fe | 1594 | * The maps are compared bitwise, so both 'key->mf' and 'mf' must have been |
0de8783a JR |
1595 | * generated by miniflow_extract. */ |
1596 | static inline bool | |
1597 | netdev_flow_key_equal_mf(const struct netdev_flow_key *key, | |
1598 | const struct miniflow *mf) | |
79df317f | 1599 | { |
caeb4906 | 1600 | return !memcmp(&key->mf, mf, key->len); |
79df317f DDP |
1601 | } |
1602 | ||
1603 | static inline void | |
1604 | netdev_flow_key_clone(struct netdev_flow_key *dst, | |
0de8783a JR |
1605 | const struct netdev_flow_key *src) |
1606 | { | |
caeb4906 JR |
1607 | memcpy(dst, src, |
1608 | offsetof(struct netdev_flow_key, mf) + src->len); | |
0de8783a JR |
1609 | } |
1610 | ||
1611 | /* Slow. */ | |
1612 | static void | |
1613 | netdev_flow_key_from_flow(struct netdev_flow_key *dst, | |
1614 | const struct flow *src) | |
1615 | { | |
cf62fa4c | 1616 | struct dp_packet packet; |
0de8783a | 1617 | uint64_t buf_stub[512 / 8]; |
0de8783a | 1618 | |
cf62fa4c PS |
1619 | dp_packet_use_stub(&packet, buf_stub, sizeof buf_stub); |
1620 | pkt_metadata_from_flow(&packet.md, src); | |
0de8783a | 1621 | flow_compose(&packet, src); |
cf62fa4c PS |
1622 | miniflow_extract(&packet, &dst->mf); |
1623 | dp_packet_uninit(&packet); | |
0de8783a | 1624 | |
361d808d | 1625 | dst->len = netdev_flow_key_size(miniflow_n_values(&dst->mf)); |
0de8783a JR |
1626 | dst->hash = 0; /* Not computed yet. */ |
1627 | } | |
1628 | ||
1629 | /* Initialize a netdev_flow_key 'mask' from 'match'. */ | |
1630 | static inline void | |
1631 | netdev_flow_mask_init(struct netdev_flow_key *mask, | |
1632 | const struct match *match) | |
1633 | { | |
09b0fa9c | 1634 | uint64_t *dst = miniflow_values(&mask->mf); |
5fcff47b | 1635 | struct flowmap fmap; |
0de8783a | 1636 | uint32_t hash = 0; |
5fcff47b | 1637 | size_t idx; |
0de8783a JR |
1638 | |
1639 | /* Only check masks that make sense for the flow. */ | |
5fcff47b JR |
1640 | flow_wc_map(&match->flow, &fmap); |
1641 | flowmap_init(&mask->mf.map); | |
0de8783a | 1642 | |
5fcff47b JR |
1643 | FLOWMAP_FOR_EACH_INDEX(idx, fmap) { |
1644 | uint64_t mask_u64 = flow_u64_value(&match->wc.masks, idx); | |
0de8783a | 1645 | |
5fcff47b JR |
1646 | if (mask_u64) { |
1647 | flowmap_set(&mask->mf.map, idx, 1); | |
1648 | *dst++ = mask_u64; | |
1649 | hash = hash_add64(hash, mask_u64); | |
0de8783a | 1650 | } |
0de8783a JR |
1651 | } |
1652 | ||
5fcff47b | 1653 | map_t map; |
0de8783a | 1654 | |
5fcff47b JR |
1655 | FLOWMAP_FOR_EACH_MAP (map, mask->mf.map) { |
1656 | hash = hash_add64(hash, map); | |
1657 | } | |
0de8783a | 1658 | |
5fcff47b | 1659 | size_t n = dst - miniflow_get_values(&mask->mf); |
0de8783a | 1660 | |
d70e8c28 | 1661 | mask->hash = hash_finish(hash, n * 8); |
0de8783a JR |
1662 | mask->len = netdev_flow_key_size(n); |
1663 | } | |
1664 | ||
361d808d | 1665 | /* Initializes 'dst' as a copy of 'flow' masked with 'mask'. */ |
0de8783a JR |
1666 | static inline void |
1667 | netdev_flow_key_init_masked(struct netdev_flow_key *dst, | |
1668 | const struct flow *flow, | |
1669 | const struct netdev_flow_key *mask) | |
79df317f | 1670 | { |
09b0fa9c JR |
1671 | uint64_t *dst_u64 = miniflow_values(&dst->mf); |
1672 | const uint64_t *mask_u64 = miniflow_get_values(&mask->mf); | |
0de8783a | 1673 | uint32_t hash = 0; |
d70e8c28 | 1674 | uint64_t value; |
0de8783a JR |
1675 | |
1676 | dst->len = mask->len; | |
361d808d | 1677 | dst->mf = mask->mf; /* Copy maps. */ |
0de8783a | 1678 | |
5fcff47b | 1679 | FLOW_FOR_EACH_IN_MAPS(value, flow, mask->mf.map) { |
d70e8c28 JR |
1680 | *dst_u64 = value & *mask_u64++; |
1681 | hash = hash_add64(hash, *dst_u64++); | |
0de8783a | 1682 | } |
09b0fa9c JR |
1683 | dst->hash = hash_finish(hash, |
1684 | (dst_u64 - miniflow_get_values(&dst->mf)) * 8); | |
0de8783a JR |
1685 | } |
1686 | ||
5fcff47b JR |
1687 | /* Iterate through netdev_flow_key TNL u64 values specified by 'FLOWMAP'. */ |
1688 | #define NETDEV_FLOW_KEY_FOR_EACH_IN_FLOWMAP(VALUE, KEY, FLOWMAP) \ | |
1689 | MINIFLOW_FOR_EACH_IN_FLOWMAP(VALUE, &(KEY)->mf, FLOWMAP) | |
0de8783a JR |
1690 | |
1691 | /* Returns a hash value for the bits of 'key' where there are 1-bits in | |
1692 | * 'mask'. */ | |
1693 | static inline uint32_t | |
1694 | netdev_flow_key_hash_in_mask(const struct netdev_flow_key *key, | |
1695 | const struct netdev_flow_key *mask) | |
1696 | { | |
09b0fa9c | 1697 | const uint64_t *p = miniflow_get_values(&mask->mf); |
0de8783a | 1698 | uint32_t hash = 0; |
5fcff47b | 1699 | uint64_t value; |
0de8783a | 1700 | |
5fcff47b JR |
1701 | NETDEV_FLOW_KEY_FOR_EACH_IN_FLOWMAP(value, key, mask->mf.map) { |
1702 | hash = hash_add64(hash, value & *p++); | |
0de8783a JR |
1703 | } |
1704 | ||
09b0fa9c | 1705 | return hash_finish(hash, (p - miniflow_get_values(&mask->mf)) * 8); |
79df317f DDP |
1706 | } |
1707 | ||
9bbf1c3d DDP |
1708 | static inline bool |
1709 | emc_entry_alive(struct emc_entry *ce) | |
1710 | { | |
1711 | return ce->flow && !ce->flow->dead; | |
1712 | } | |
1713 | ||
1714 | static void | |
1715 | emc_clear_entry(struct emc_entry *ce) | |
1716 | { | |
1717 | if (ce->flow) { | |
1718 | dp_netdev_flow_unref(ce->flow); | |
1719 | ce->flow = NULL; | |
1720 | } | |
1721 | } | |
1722 | ||
1723 | static inline void | |
1724 | emc_change_entry(struct emc_entry *ce, struct dp_netdev_flow *flow, | |
0de8783a | 1725 | const struct netdev_flow_key *key) |
9bbf1c3d DDP |
1726 | { |
1727 | if (ce->flow != flow) { | |
1728 | if (ce->flow) { | |
1729 | dp_netdev_flow_unref(ce->flow); | |
1730 | } | |
1731 | ||
1732 | if (dp_netdev_flow_ref(flow)) { | |
1733 | ce->flow = flow; | |
1734 | } else { | |
1735 | ce->flow = NULL; | |
1736 | } | |
1737 | } | |
0de8783a JR |
1738 | if (key) { |
1739 | netdev_flow_key_clone(&ce->key, key); | |
9bbf1c3d DDP |
1740 | } |
1741 | } | |
1742 | ||
1743 | static inline void | |
0de8783a | 1744 | emc_insert(struct emc_cache *cache, const struct netdev_flow_key *key, |
9bbf1c3d DDP |
1745 | struct dp_netdev_flow *flow) |
1746 | { | |
1747 | struct emc_entry *to_be_replaced = NULL; | |
1748 | struct emc_entry *current_entry; | |
1749 | ||
0de8783a JR |
1750 | EMC_FOR_EACH_POS_WITH_HASH(cache, current_entry, key->hash) { |
1751 | if (netdev_flow_key_equal(¤t_entry->key, key)) { | |
9bbf1c3d | 1752 | /* We found the entry with the 'mf' miniflow */ |
0de8783a | 1753 | emc_change_entry(current_entry, flow, NULL); |
9bbf1c3d DDP |
1754 | return; |
1755 | } | |
1756 | ||
1757 | /* Replacement policy: put the flow in an empty (not alive) entry, or | |
1758 | * in the first entry where it can be */ | |
1759 | if (!to_be_replaced | |
1760 | || (emc_entry_alive(to_be_replaced) | |
1761 | && !emc_entry_alive(current_entry)) | |
0de8783a | 1762 | || current_entry->key.hash < to_be_replaced->key.hash) { |
9bbf1c3d DDP |
1763 | to_be_replaced = current_entry; |
1764 | } | |
1765 | } | |
1766 | /* We didn't find the miniflow in the cache. | |
1767 | * The 'to_be_replaced' entry is where the new flow will be stored */ | |
1768 | ||
0de8783a | 1769 | emc_change_entry(to_be_replaced, flow, key); |
9bbf1c3d DDP |
1770 | } |
1771 | ||
1772 | static inline struct dp_netdev_flow * | |
0de8783a | 1773 | emc_lookup(struct emc_cache *cache, const struct netdev_flow_key *key) |
9bbf1c3d DDP |
1774 | { |
1775 | struct emc_entry *current_entry; | |
1776 | ||
0de8783a JR |
1777 | EMC_FOR_EACH_POS_WITH_HASH(cache, current_entry, key->hash) { |
1778 | if (current_entry->key.hash == key->hash | |
1779 | && emc_entry_alive(current_entry) | |
1780 | && netdev_flow_key_equal_mf(¤t_entry->key, &key->mf)) { | |
9bbf1c3d | 1781 | |
0de8783a | 1782 | /* We found the entry with the 'key->mf' miniflow */ |
9bbf1c3d DDP |
1783 | return current_entry->flow; |
1784 | } | |
1785 | } | |
1786 | ||
1787 | return NULL; | |
1788 | } | |
1789 | ||
72865317 | 1790 | static struct dp_netdev_flow * |
1c1e46ed AW |
1791 | dp_netdev_pmd_lookup_flow(const struct dp_netdev_pmd_thread *pmd, |
1792 | const struct netdev_flow_key *key) | |
2c0ea78f | 1793 | { |
8a4e3a85 | 1794 | struct dp_netdev_flow *netdev_flow; |
0de8783a | 1795 | struct dpcls_rule *rule; |
2c0ea78f | 1796 | |
1c1e46ed | 1797 | dpcls_lookup(&pmd->cls, key, &rule, 1); |
4f150744 | 1798 | netdev_flow = dp_netdev_flow_cast(rule); |
2c0ea78f | 1799 | |
8a4e3a85 | 1800 | return netdev_flow; |
2c0ea78f GS |
1801 | } |
1802 | ||
1803 | static struct dp_netdev_flow * | |
1c1e46ed AW |
1804 | dp_netdev_pmd_find_flow(const struct dp_netdev_pmd_thread *pmd, |
1805 | const ovs_u128 *ufidp, const struct nlattr *key, | |
1806 | size_t key_len) | |
72865317 | 1807 | { |
1763b4b8 | 1808 | struct dp_netdev_flow *netdev_flow; |
70e5ed6f JS |
1809 | struct flow flow; |
1810 | ovs_u128 ufid; | |
1811 | ||
1812 | /* If a UFID is not provided, determine one based on the key. */ | |
1813 | if (!ufidp && key && key_len | |
1814 | && !dpif_netdev_flow_from_nlattrs(key, key_len, &flow)) { | |
1c1e46ed | 1815 | dpif_flow_hash(pmd->dp->dpif, &flow, sizeof flow, &ufid); |
70e5ed6f JS |
1816 | ufidp = &ufid; |
1817 | } | |
72865317 | 1818 | |
70e5ed6f JS |
1819 | if (ufidp) { |
1820 | CMAP_FOR_EACH_WITH_HASH (netdev_flow, node, dp_netdev_flow_hash(ufidp), | |
1c1e46ed | 1821 | &pmd->flow_table) { |
2ff8484b | 1822 | if (ovs_u128_equals(netdev_flow->ufid, *ufidp)) { |
70e5ed6f JS |
1823 | return netdev_flow; |
1824 | } | |
72865317 BP |
1825 | } |
1826 | } | |
8a4e3a85 | 1827 | |
72865317 BP |
1828 | return NULL; |
1829 | } | |
1830 | ||
1831 | static void | |
eb94da30 | 1832 | get_dpif_flow_stats(const struct dp_netdev_flow *netdev_flow_, |
1763b4b8 | 1833 | struct dpif_flow_stats *stats) |
feebdea2 | 1834 | { |
eb94da30 DDP |
1835 | struct dp_netdev_flow *netdev_flow; |
1836 | unsigned long long n; | |
1837 | long long used; | |
1838 | uint16_t flags; | |
1839 | ||
1840 | netdev_flow = CONST_CAST(struct dp_netdev_flow *, netdev_flow_); | |
1841 | ||
1842 | atomic_read_relaxed(&netdev_flow->stats.packet_count, &n); | |
1843 | stats->n_packets = n; | |
1844 | atomic_read_relaxed(&netdev_flow->stats.byte_count, &n); | |
1845 | stats->n_bytes = n; | |
1846 | atomic_read_relaxed(&netdev_flow->stats.used, &used); | |
1847 | stats->used = used; | |
1848 | atomic_read_relaxed(&netdev_flow->stats.tcp_flags, &flags); | |
1849 | stats->tcp_flags = flags; | |
72865317 BP |
1850 | } |
1851 | ||
7af12bd7 JS |
1852 | /* Converts to the dpif_flow format, using 'key_buf' and 'mask_buf' for |
1853 | * storing the netlink-formatted key/mask. 'key_buf' may be the same as | |
1854 | * 'mask_buf'. Actions will be returned without copying, by relying on RCU to | |
1855 | * protect them. */ | |
6fe09f8c | 1856 | static void |
70e5ed6f | 1857 | dp_netdev_flow_to_dpif_flow(const struct dp_netdev_flow *netdev_flow, |
7af12bd7 | 1858 | struct ofpbuf *key_buf, struct ofpbuf *mask_buf, |
64bb477f | 1859 | struct dpif_flow *flow, bool terse) |
6fe09f8c | 1860 | { |
64bb477f JS |
1861 | if (terse) { |
1862 | memset(flow, 0, sizeof *flow); | |
1863 | } else { | |
1864 | struct flow_wildcards wc; | |
1865 | struct dp_netdev_actions *actions; | |
1866 | size_t offset; | |
5262eea1 JG |
1867 | struct odp_flow_key_parms odp_parms = { |
1868 | .flow = &netdev_flow->flow, | |
1869 | .mask = &wc.masks, | |
2494ccd7 | 1870 | .support = dp_netdev_support, |
5262eea1 | 1871 | }; |
64bb477f JS |
1872 | |
1873 | miniflow_expand(&netdev_flow->cr.mask->mf, &wc.masks); | |
1874 | ||
1875 | /* Key */ | |
6fd6ed71 | 1876 | offset = key_buf->size; |
64bb477f | 1877 | flow->key = ofpbuf_tail(key_buf); |
5262eea1 JG |
1878 | odp_parms.odp_in_port = netdev_flow->flow.in_port.odp_port; |
1879 | odp_flow_key_from_flow(&odp_parms, key_buf); | |
6fd6ed71 | 1880 | flow->key_len = key_buf->size - offset; |
64bb477f JS |
1881 | |
1882 | /* Mask */ | |
6fd6ed71 | 1883 | offset = mask_buf->size; |
64bb477f | 1884 | flow->mask = ofpbuf_tail(mask_buf); |
5262eea1 | 1885 | odp_parms.odp_in_port = wc.masks.in_port.odp_port; |
ec1f6f32 | 1886 | odp_parms.key_buf = key_buf; |
5262eea1 | 1887 | odp_flow_key_from_mask(&odp_parms, mask_buf); |
6fd6ed71 | 1888 | flow->mask_len = mask_buf->size - offset; |
64bb477f JS |
1889 | |
1890 | /* Actions */ | |
1891 | actions = dp_netdev_flow_get_actions(netdev_flow); | |
1892 | flow->actions = actions->actions; | |
1893 | flow->actions_len = actions->size; | |
1894 | } | |
6fe09f8c | 1895 | |
70e5ed6f JS |
1896 | flow->ufid = netdev_flow->ufid; |
1897 | flow->ufid_present = true; | |
1c1e46ed | 1898 | flow->pmd_id = netdev_flow->pmd_id; |
6fe09f8c JS |
1899 | get_dpif_flow_stats(netdev_flow, &flow->stats); |
1900 | } | |
1901 | ||
36956a7d | 1902 | static int |
8c301900 JR |
1903 | dpif_netdev_mask_from_nlattrs(const struct nlattr *key, uint32_t key_len, |
1904 | const struct nlattr *mask_key, | |
1905 | uint32_t mask_key_len, const struct flow *flow, | |
9f861c91 | 1906 | struct flow_wildcards *wc) |
8c301900 | 1907 | { |
ca8d3442 DDP |
1908 | enum odp_key_fitness fitness; |
1909 | ||
1910 | fitness = odp_flow_key_to_mask_udpif(mask_key, mask_key_len, key, | |
1911 | key_len, wc, flow); | |
1912 | if (fitness) { | |
1913 | /* This should not happen: it indicates that | |
1914 | * odp_flow_key_from_mask() and odp_flow_key_to_mask() | |
1915 | * disagree on the acceptable form of a mask. Log the problem | |
1916 | * as an error, with enough details to enable debugging. */ | |
1917 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1918 | ||
1919 | if (!VLOG_DROP_ERR(&rl)) { | |
1920 | struct ds s; | |
8c301900 | 1921 | |
ca8d3442 DDP |
1922 | ds_init(&s); |
1923 | odp_flow_format(key, key_len, mask_key, mask_key_len, NULL, &s, | |
1924 | true); | |
1925 | VLOG_ERR("internal error parsing flow mask %s (%s)", | |
1926 | ds_cstr(&s), odp_key_fitness_to_string(fitness)); | |
1927 | ds_destroy(&s); | |
8c301900 | 1928 | } |
ca8d3442 DDP |
1929 | |
1930 | return EINVAL; | |
8c301900 JR |
1931 | } |
1932 | ||
1933 | return 0; | |
1934 | } | |
1935 | ||
1936 | static int | |
1937 | dpif_netdev_flow_from_nlattrs(const struct nlattr *key, uint32_t key_len, | |
1938 | struct flow *flow) | |
36956a7d | 1939 | { |
586ddea5 BP |
1940 | odp_port_t in_port; |
1941 | ||
6728d578 | 1942 | if (odp_flow_key_to_flow_udpif(key, key_len, flow)) { |
36956a7d | 1943 | /* This should not happen: it indicates that odp_flow_key_from_flow() |
8c301900 JR |
1944 | * and odp_flow_key_to_flow() disagree on the acceptable form of a |
1945 | * flow. Log the problem as an error, with enough details to enable | |
1946 | * debugging. */ | |
36956a7d BP |
1947 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
1948 | ||
1949 | if (!VLOG_DROP_ERR(&rl)) { | |
1950 | struct ds s; | |
1951 | ||
1952 | ds_init(&s); | |
8c301900 | 1953 | odp_flow_format(key, key_len, NULL, 0, NULL, &s, true); |
36956a7d BP |
1954 | VLOG_ERR("internal error parsing flow key %s", ds_cstr(&s)); |
1955 | ds_destroy(&s); | |
1956 | } | |
1957 | ||
1958 | return EINVAL; | |
1959 | } | |
1960 | ||
586ddea5 BP |
1961 | in_port = flow->in_port.odp_port; |
1962 | if (!is_valid_port_number(in_port) && in_port != ODPP_NONE) { | |
18886b60 BP |
1963 | return EINVAL; |
1964 | } | |
1965 | ||
07659514 | 1966 | /* Userspace datapath doesn't support conntrack. */ |
9daf2348 | 1967 | if (flow->ct_state || flow->ct_zone || flow->ct_mark |
2ff8484b | 1968 | || !ovs_u128_is_zero(flow->ct_label)) { |
07659514 JS |
1969 | return EINVAL; |
1970 | } | |
1971 | ||
36956a7d BP |
1972 | return 0; |
1973 | } | |
1974 | ||
72865317 | 1975 | static int |
6fe09f8c | 1976 | dpif_netdev_flow_get(const struct dpif *dpif, const struct dpif_flow_get *get) |
72865317 BP |
1977 | { |
1978 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
1763b4b8 | 1979 | struct dp_netdev_flow *netdev_flow; |
1c1e46ed | 1980 | struct dp_netdev_pmd_thread *pmd; |
bd5131ba DDP |
1981 | unsigned pmd_id = get->pmd_id == PMD_ID_NULL |
1982 | ? NON_PMD_CORE_ID : get->pmd_id; | |
70e5ed6f | 1983 | int error = 0; |
8a4e3a85 | 1984 | |
1c1e46ed AW |
1985 | pmd = dp_netdev_get_pmd(dp, pmd_id); |
1986 | if (!pmd) { | |
1987 | return EINVAL; | |
1988 | } | |
1989 | ||
1990 | netdev_flow = dp_netdev_pmd_find_flow(pmd, get->ufid, get->key, | |
1991 | get->key_len); | |
1763b4b8 | 1992 | if (netdev_flow) { |
70e5ed6f | 1993 | dp_netdev_flow_to_dpif_flow(netdev_flow, get->buffer, get->buffer, |
64bb477f | 1994 | get->flow, false); |
70e5ed6f | 1995 | } else { |
5279f8fd | 1996 | error = ENOENT; |
72865317 | 1997 | } |
1c1e46ed AW |
1998 | dp_netdev_pmd_unref(pmd); |
1999 | ||
bc4a05c6 | 2000 | |
5279f8fd | 2001 | return error; |
72865317 BP |
2002 | } |
2003 | ||
0de8783a | 2004 | static struct dp_netdev_flow * |
1c1e46ed AW |
2005 | dp_netdev_flow_add(struct dp_netdev_pmd_thread *pmd, |
2006 | struct match *match, const ovs_u128 *ufid, | |
ae2ceebd | 2007 | const struct nlattr *actions, size_t actions_len) |
1c1e46ed | 2008 | OVS_REQUIRES(pmd->flow_mutex) |
72865317 | 2009 | { |
0de8783a JR |
2010 | struct dp_netdev_flow *flow; |
2011 | struct netdev_flow_key mask; | |
ed79f89a | 2012 | |
0de8783a JR |
2013 | netdev_flow_mask_init(&mask, match); |
2014 | /* Make sure wc does not have metadata. */ | |
5fcff47b JR |
2015 | ovs_assert(!FLOWMAP_HAS_FIELD(&mask.mf.map, metadata) |
2016 | && !FLOWMAP_HAS_FIELD(&mask.mf.map, regs)); | |
679ba04c | 2017 | |
0de8783a | 2018 | /* Do not allocate extra space. */ |
caeb4906 | 2019 | flow = xmalloc(sizeof *flow - sizeof flow->cr.flow.mf + mask.len); |
1c1e46ed | 2020 | memset(&flow->stats, 0, sizeof flow->stats); |
0de8783a | 2021 | flow->dead = false; |
11e5cf1f | 2022 | flow->batch = NULL; |
bd5131ba | 2023 | *CONST_CAST(unsigned *, &flow->pmd_id) = pmd->core_id; |
0de8783a | 2024 | *CONST_CAST(struct flow *, &flow->flow) = match->flow; |
70e5ed6f | 2025 | *CONST_CAST(ovs_u128 *, &flow->ufid) = *ufid; |
0de8783a | 2026 | ovs_refcount_init(&flow->ref_cnt); |
0de8783a | 2027 | ovsrcu_set(&flow->actions, dp_netdev_actions_create(actions, actions_len)); |
2c0ea78f | 2028 | |
0de8783a | 2029 | netdev_flow_key_init_masked(&flow->cr.flow, &match->flow, &mask); |
1c1e46ed | 2030 | dpcls_insert(&pmd->cls, &flow->cr, &mask); |
72865317 | 2031 | |
4c75aaab EJ |
2032 | cmap_insert(&pmd->flow_table, CONST_CAST(struct cmap_node *, &flow->node), |
2033 | dp_netdev_flow_hash(&flow->ufid)); | |
2034 | ||
623540e4 | 2035 | if (OVS_UNLIKELY(VLOG_IS_DBG_ENABLED())) { |
0de8783a | 2036 | struct match match; |
623540e4 EJ |
2037 | struct ds ds = DS_EMPTY_INITIALIZER; |
2038 | ||
4d8f90b1 | 2039 | match.tun_md.valid = false; |
0de8783a JR |
2040 | match.flow = flow->flow; |
2041 | miniflow_expand(&flow->cr.mask->mf, &match.wc.masks); | |
2042 | ||
623540e4 | 2043 | ds_put_cstr(&ds, "flow_add: "); |
70e5ed6f JS |
2044 | odp_format_ufid(ufid, &ds); |
2045 | ds_put_cstr(&ds, " "); | |
0de8783a | 2046 | match_format(&match, &ds, OFP_DEFAULT_PRIORITY); |
623540e4 EJ |
2047 | ds_put_cstr(&ds, ", actions:"); |
2048 | format_odp_actions(&ds, actions, actions_len); | |
2049 | ||
2050 | VLOG_DBG_RL(&upcall_rl, "%s", ds_cstr(&ds)); | |
2051 | ||
2052 | ds_destroy(&ds); | |
2053 | } | |
2054 | ||
0de8783a | 2055 | return flow; |
72865317 BP |
2056 | } |
2057 | ||
72865317 | 2058 | static int |
89625d1e | 2059 | dpif_netdev_flow_put(struct dpif *dpif, const struct dpif_flow_put *put) |
72865317 BP |
2060 | { |
2061 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
1763b4b8 | 2062 | struct dp_netdev_flow *netdev_flow; |
0de8783a | 2063 | struct netdev_flow_key key; |
1c1e46ed | 2064 | struct dp_netdev_pmd_thread *pmd; |
ae2ceebd | 2065 | struct match match; |
70e5ed6f | 2066 | ovs_u128 ufid; |
bd5131ba DDP |
2067 | unsigned pmd_id = put->pmd_id == PMD_ID_NULL |
2068 | ? NON_PMD_CORE_ID : put->pmd_id; | |
36956a7d BP |
2069 | int error; |
2070 | ||
ae2ceebd | 2071 | error = dpif_netdev_flow_from_nlattrs(put->key, put->key_len, &match.flow); |
8c301900 JR |
2072 | if (error) { |
2073 | return error; | |
2074 | } | |
2075 | error = dpif_netdev_mask_from_nlattrs(put->key, put->key_len, | |
2076 | put->mask, put->mask_len, | |
9f861c91 | 2077 | &match.flow, &match.wc); |
36956a7d BP |
2078 | if (error) { |
2079 | return error; | |
2080 | } | |
0de8783a | 2081 | |
1c1e46ed AW |
2082 | pmd = dp_netdev_get_pmd(dp, pmd_id); |
2083 | if (!pmd) { | |
2084 | return EINVAL; | |
2085 | } | |
2086 | ||
0de8783a JR |
2087 | /* Must produce a netdev_flow_key for lookup. |
2088 | * This interface is no longer performance critical, since it is not used | |
2089 | * for upcall processing any more. */ | |
2090 | netdev_flow_key_from_flow(&key, &match.flow); | |
72865317 | 2091 | |
70e5ed6f JS |
2092 | if (put->ufid) { |
2093 | ufid = *put->ufid; | |
2094 | } else { | |
2095 | dpif_flow_hash(dpif, &match.flow, sizeof match.flow, &ufid); | |
2096 | } | |
2097 | ||
1c1e46ed AW |
2098 | ovs_mutex_lock(&pmd->flow_mutex); |
2099 | netdev_flow = dp_netdev_pmd_lookup_flow(pmd, &key); | |
1763b4b8 | 2100 | if (!netdev_flow) { |
89625d1e | 2101 | if (put->flags & DPIF_FP_CREATE) { |
1c1e46ed | 2102 | if (cmap_count(&pmd->flow_table) < MAX_FLOWS) { |
89625d1e BP |
2103 | if (put->stats) { |
2104 | memset(put->stats, 0, sizeof *put->stats); | |
feebdea2 | 2105 | } |
1c1e46ed | 2106 | dp_netdev_flow_add(pmd, &match, &ufid, put->actions, |
70e5ed6f | 2107 | put->actions_len); |
0de8783a | 2108 | error = 0; |
72865317 | 2109 | } else { |
5279f8fd | 2110 | error = EFBIG; |
72865317 BP |
2111 | } |
2112 | } else { | |
5279f8fd | 2113 | error = ENOENT; |
72865317 BP |
2114 | } |
2115 | } else { | |
2c0ea78f | 2116 | if (put->flags & DPIF_FP_MODIFY |
ae2ceebd | 2117 | && flow_equal(&match.flow, &netdev_flow->flow)) { |
8a4e3a85 BP |
2118 | struct dp_netdev_actions *new_actions; |
2119 | struct dp_netdev_actions *old_actions; | |
2120 | ||
2121 | new_actions = dp_netdev_actions_create(put->actions, | |
2122 | put->actions_len); | |
2123 | ||
61e7deb1 BP |
2124 | old_actions = dp_netdev_flow_get_actions(netdev_flow); |
2125 | ovsrcu_set(&netdev_flow->actions, new_actions); | |
679ba04c | 2126 | |
a84cb64a BP |
2127 | if (put->stats) { |
2128 | get_dpif_flow_stats(netdev_flow, put->stats); | |
2129 | } | |
2130 | if (put->flags & DPIF_FP_ZERO_STATS) { | |
97447f55 DDP |
2131 | /* XXX: The userspace datapath uses thread local statistics |
2132 | * (for flows), which should be updated only by the owning | |
2133 | * thread. Since we cannot write on stats memory here, | |
2134 | * we choose not to support this flag. Please note: | |
2135 | * - This feature is currently used only by dpctl commands with | |
2136 | * option --clear. | |
2137 | * - Should the need arise, this operation can be implemented | |
2138 | * by keeping a base value (to be update here) for each | |
2139 | * counter, and subtracting it before outputting the stats */ | |
2140 | error = EOPNOTSUPP; | |
72865317 | 2141 | } |
8a4e3a85 | 2142 | |
61e7deb1 | 2143 | ovsrcu_postpone(dp_netdev_actions_free, old_actions); |
2c0ea78f | 2144 | } else if (put->flags & DPIF_FP_CREATE) { |
5279f8fd | 2145 | error = EEXIST; |
2c0ea78f GS |
2146 | } else { |
2147 | /* Overlapping flow. */ | |
2148 | error = EINVAL; | |
72865317 BP |
2149 | } |
2150 | } | |
1c1e46ed AW |
2151 | ovs_mutex_unlock(&pmd->flow_mutex); |
2152 | dp_netdev_pmd_unref(pmd); | |
5279f8fd BP |
2153 | |
2154 | return error; | |
72865317 BP |
2155 | } |
2156 | ||
72865317 | 2157 | static int |
b99d3cee | 2158 | dpif_netdev_flow_del(struct dpif *dpif, const struct dpif_flow_del *del) |
72865317 BP |
2159 | { |
2160 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
1763b4b8 | 2161 | struct dp_netdev_flow *netdev_flow; |
1c1e46ed | 2162 | struct dp_netdev_pmd_thread *pmd; |
bd5131ba DDP |
2163 | unsigned pmd_id = del->pmd_id == PMD_ID_NULL |
2164 | ? NON_PMD_CORE_ID : del->pmd_id; | |
70e5ed6f | 2165 | int error = 0; |
72865317 | 2166 | |
1c1e46ed AW |
2167 | pmd = dp_netdev_get_pmd(dp, pmd_id); |
2168 | if (!pmd) { | |
2169 | return EINVAL; | |
2170 | } | |
2171 | ||
2172 | ovs_mutex_lock(&pmd->flow_mutex); | |
2173 | netdev_flow = dp_netdev_pmd_find_flow(pmd, del->ufid, del->key, | |
2174 | del->key_len); | |
1763b4b8 | 2175 | if (netdev_flow) { |
b99d3cee | 2176 | if (del->stats) { |
1763b4b8 | 2177 | get_dpif_flow_stats(netdev_flow, del->stats); |
feebdea2 | 2178 | } |
1c1e46ed | 2179 | dp_netdev_pmd_remove_flow(pmd, netdev_flow); |
72865317 | 2180 | } else { |
5279f8fd | 2181 | error = ENOENT; |
72865317 | 2182 | } |
1c1e46ed AW |
2183 | ovs_mutex_unlock(&pmd->flow_mutex); |
2184 | dp_netdev_pmd_unref(pmd); | |
5279f8fd BP |
2185 | |
2186 | return error; | |
72865317 BP |
2187 | } |
2188 | ||
ac64794a BP |
2189 | struct dpif_netdev_flow_dump { |
2190 | struct dpif_flow_dump up; | |
1c1e46ed AW |
2191 | struct cmap_position poll_thread_pos; |
2192 | struct cmap_position flow_pos; | |
2193 | struct dp_netdev_pmd_thread *cur_pmd; | |
d2ad7ef1 JS |
2194 | int status; |
2195 | struct ovs_mutex mutex; | |
e723fd32 JS |
2196 | }; |
2197 | ||
ac64794a BP |
2198 | static struct dpif_netdev_flow_dump * |
2199 | dpif_netdev_flow_dump_cast(struct dpif_flow_dump *dump) | |
72865317 | 2200 | { |
ac64794a | 2201 | return CONTAINER_OF(dump, struct dpif_netdev_flow_dump, up); |
e723fd32 JS |
2202 | } |
2203 | ||
ac64794a | 2204 | static struct dpif_flow_dump * |
64bb477f | 2205 | dpif_netdev_flow_dump_create(const struct dpif *dpif_, bool terse) |
e723fd32 | 2206 | { |
ac64794a | 2207 | struct dpif_netdev_flow_dump *dump; |
e723fd32 | 2208 | |
1c1e46ed | 2209 | dump = xzalloc(sizeof *dump); |
ac64794a | 2210 | dpif_flow_dump_init(&dump->up, dpif_); |
64bb477f | 2211 | dump->up.terse = terse; |
ac64794a BP |
2212 | ovs_mutex_init(&dump->mutex); |
2213 | ||
2214 | return &dump->up; | |
e723fd32 JS |
2215 | } |
2216 | ||
2217 | static int | |
ac64794a | 2218 | dpif_netdev_flow_dump_destroy(struct dpif_flow_dump *dump_) |
e723fd32 | 2219 | { |
ac64794a | 2220 | struct dpif_netdev_flow_dump *dump = dpif_netdev_flow_dump_cast(dump_); |
e723fd32 | 2221 | |
ac64794a BP |
2222 | ovs_mutex_destroy(&dump->mutex); |
2223 | free(dump); | |
704a1e09 BP |
2224 | return 0; |
2225 | } | |
2226 | ||
ac64794a BP |
2227 | struct dpif_netdev_flow_dump_thread { |
2228 | struct dpif_flow_dump_thread up; | |
2229 | struct dpif_netdev_flow_dump *dump; | |
8bb113da RW |
2230 | struct odputil_keybuf keybuf[FLOW_DUMP_MAX_BATCH]; |
2231 | struct odputil_keybuf maskbuf[FLOW_DUMP_MAX_BATCH]; | |
ac64794a BP |
2232 | }; |
2233 | ||
2234 | static struct dpif_netdev_flow_dump_thread * | |
2235 | dpif_netdev_flow_dump_thread_cast(struct dpif_flow_dump_thread *thread) | |
2236 | { | |
2237 | return CONTAINER_OF(thread, struct dpif_netdev_flow_dump_thread, up); | |
2238 | } | |
2239 | ||
2240 | static struct dpif_flow_dump_thread * | |
2241 | dpif_netdev_flow_dump_thread_create(struct dpif_flow_dump *dump_) | |
2242 | { | |
2243 | struct dpif_netdev_flow_dump *dump = dpif_netdev_flow_dump_cast(dump_); | |
2244 | struct dpif_netdev_flow_dump_thread *thread; | |
2245 | ||
2246 | thread = xmalloc(sizeof *thread); | |
2247 | dpif_flow_dump_thread_init(&thread->up, &dump->up); | |
2248 | thread->dump = dump; | |
2249 | return &thread->up; | |
2250 | } | |
2251 | ||
2252 | static void | |
2253 | dpif_netdev_flow_dump_thread_destroy(struct dpif_flow_dump_thread *thread_) | |
2254 | { | |
2255 | struct dpif_netdev_flow_dump_thread *thread | |
2256 | = dpif_netdev_flow_dump_thread_cast(thread_); | |
2257 | ||
2258 | free(thread); | |
2259 | } | |
2260 | ||
704a1e09 | 2261 | static int |
ac64794a | 2262 | dpif_netdev_flow_dump_next(struct dpif_flow_dump_thread *thread_, |
8bb113da | 2263 | struct dpif_flow *flows, int max_flows) |
ac64794a BP |
2264 | { |
2265 | struct dpif_netdev_flow_dump_thread *thread | |
2266 | = dpif_netdev_flow_dump_thread_cast(thread_); | |
2267 | struct dpif_netdev_flow_dump *dump = thread->dump; | |
8bb113da | 2268 | struct dp_netdev_flow *netdev_flows[FLOW_DUMP_MAX_BATCH]; |
8bb113da RW |
2269 | int n_flows = 0; |
2270 | int i; | |
14608a15 | 2271 | |
ac64794a | 2272 | ovs_mutex_lock(&dump->mutex); |
8bb113da | 2273 | if (!dump->status) { |
1c1e46ed AW |
2274 | struct dpif_netdev *dpif = dpif_netdev_cast(thread->up.dpif); |
2275 | struct dp_netdev *dp = get_dp_netdev(&dpif->dpif); | |
2276 | struct dp_netdev_pmd_thread *pmd = dump->cur_pmd; | |
2277 | int flow_limit = MIN(max_flows, FLOW_DUMP_MAX_BATCH); | |
2278 | ||
2279 | /* First call to dump_next(), extracts the first pmd thread. | |
2280 | * If there is no pmd thread, returns immediately. */ | |
2281 | if (!pmd) { | |
2282 | pmd = dp_netdev_pmd_get_next(dp, &dump->poll_thread_pos); | |
2283 | if (!pmd) { | |
2284 | ovs_mutex_unlock(&dump->mutex); | |
2285 | return n_flows; | |
8bb113da | 2286 | |
8bb113da | 2287 | } |
d2ad7ef1 | 2288 | } |
1c1e46ed AW |
2289 | |
2290 | do { | |
2291 | for (n_flows = 0; n_flows < flow_limit; n_flows++) { | |
2292 | struct cmap_node *node; | |
2293 | ||
2294 | node = cmap_next_position(&pmd->flow_table, &dump->flow_pos); | |
2295 | if (!node) { | |
2296 | break; | |
2297 | } | |
2298 | netdev_flows[n_flows] = CONTAINER_OF(node, | |
2299 | struct dp_netdev_flow, | |
2300 | node); | |
2301 | } | |
2302 | /* When finishing dumping the current pmd thread, moves to | |
2303 | * the next. */ | |
2304 | if (n_flows < flow_limit) { | |
2305 | memset(&dump->flow_pos, 0, sizeof dump->flow_pos); | |
2306 | dp_netdev_pmd_unref(pmd); | |
2307 | pmd = dp_netdev_pmd_get_next(dp, &dump->poll_thread_pos); | |
2308 | if (!pmd) { | |
2309 | dump->status = EOF; | |
2310 | break; | |
2311 | } | |
2312 | } | |
2313 | /* Keeps the reference to next caller. */ | |
2314 | dump->cur_pmd = pmd; | |
2315 | ||
2316 | /* If the current dump is empty, do not exit the loop, since the | |
2317 | * remaining pmds could have flows to be dumped. Just dumps again | |
2318 | * on the new 'pmd'. */ | |
2319 | } while (!n_flows); | |
8a4e3a85 | 2320 | } |
ac64794a | 2321 | ovs_mutex_unlock(&dump->mutex); |
ac64794a | 2322 | |
8bb113da RW |
2323 | for (i = 0; i < n_flows; i++) { |
2324 | struct odputil_keybuf *maskbuf = &thread->maskbuf[i]; | |
2325 | struct odputil_keybuf *keybuf = &thread->keybuf[i]; | |
2326 | struct dp_netdev_flow *netdev_flow = netdev_flows[i]; | |
2327 | struct dpif_flow *f = &flows[i]; | |
7af12bd7 | 2328 | struct ofpbuf key, mask; |
8bb113da | 2329 | |
7af12bd7 JS |
2330 | ofpbuf_use_stack(&key, keybuf, sizeof *keybuf); |
2331 | ofpbuf_use_stack(&mask, maskbuf, sizeof *maskbuf); | |
64bb477f JS |
2332 | dp_netdev_flow_to_dpif_flow(netdev_flow, &key, &mask, f, |
2333 | dump->up.terse); | |
8bb113da | 2334 | } |
feebdea2 | 2335 | |
8bb113da | 2336 | return n_flows; |
72865317 BP |
2337 | } |
2338 | ||
2339 | static int | |
758c456d | 2340 | dpif_netdev_execute(struct dpif *dpif, struct dpif_execute *execute) |
65f13b50 | 2341 | OVS_NO_THREAD_SAFETY_ANALYSIS |
72865317 BP |
2342 | { |
2343 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
65f13b50 | 2344 | struct dp_netdev_pmd_thread *pmd; |
1895cc8d | 2345 | struct dp_packet_batch pp; |
72865317 | 2346 | |
cf62fa4c PS |
2347 | if (dp_packet_size(execute->packet) < ETH_HEADER_LEN || |
2348 | dp_packet_size(execute->packet) > UINT16_MAX) { | |
72865317 BP |
2349 | return EINVAL; |
2350 | } | |
2351 | ||
65f13b50 AW |
2352 | /* Tries finding the 'pmd'. If NULL is returned, that means |
2353 | * the current thread is a non-pmd thread and should use | |
b19befae | 2354 | * dp_netdev_get_pmd(dp, NON_PMD_CORE_ID). */ |
65f13b50 AW |
2355 | pmd = ovsthread_getspecific(dp->per_pmd_key); |
2356 | if (!pmd) { | |
b19befae | 2357 | pmd = dp_netdev_get_pmd(dp, NON_PMD_CORE_ID); |
65f13b50 AW |
2358 | } |
2359 | ||
2360 | /* If the current thread is non-pmd thread, acquires | |
2361 | * the 'non_pmd_mutex'. */ | |
2362 | if (pmd->core_id == NON_PMD_CORE_ID) { | |
2363 | ovs_mutex_lock(&dp->non_pmd_mutex); | |
433330a8 | 2364 | ovs_mutex_lock(&dp->port_mutex); |
65f13b50 | 2365 | } |
1c1e46ed | 2366 | |
1895cc8d PS |
2367 | packet_batch_init_packet(&pp, execute->packet); |
2368 | dp_netdev_execute_actions(pmd, &pp, false, execute->actions, | |
9bbf1c3d | 2369 | execute->actions_len); |
65f13b50 | 2370 | if (pmd->core_id == NON_PMD_CORE_ID) { |
1c1e46ed | 2371 | dp_netdev_pmd_unref(pmd); |
433330a8 | 2372 | ovs_mutex_unlock(&dp->port_mutex); |
65f13b50 AW |
2373 | ovs_mutex_unlock(&dp->non_pmd_mutex); |
2374 | } | |
8a4e3a85 | 2375 | |
758c456d | 2376 | return 0; |
72865317 BP |
2377 | } |
2378 | ||
1a0c894a BP |
2379 | static void |
2380 | dpif_netdev_operate(struct dpif *dpif, struct dpif_op **ops, size_t n_ops) | |
2381 | { | |
2382 | size_t i; | |
2383 | ||
2384 | for (i = 0; i < n_ops; i++) { | |
2385 | struct dpif_op *op = ops[i]; | |
2386 | ||
2387 | switch (op->type) { | |
2388 | case DPIF_OP_FLOW_PUT: | |
2389 | op->error = dpif_netdev_flow_put(dpif, &op->u.flow_put); | |
2390 | break; | |
2391 | ||
2392 | case DPIF_OP_FLOW_DEL: | |
2393 | op->error = dpif_netdev_flow_del(dpif, &op->u.flow_del); | |
2394 | break; | |
2395 | ||
2396 | case DPIF_OP_EXECUTE: | |
2397 | op->error = dpif_netdev_execute(dpif, &op->u.execute); | |
2398 | break; | |
6fe09f8c JS |
2399 | |
2400 | case DPIF_OP_FLOW_GET: | |
2401 | op->error = dpif_netdev_flow_get(dpif, &op->u.flow_get); | |
2402 | break; | |
1a0c894a BP |
2403 | } |
2404 | } | |
2405 | } | |
2406 | ||
f2eee189 AW |
2407 | /* Returns true if the configuration for rx queues or cpu mask |
2408 | * is changed. */ | |
2409 | static bool | |
a14b8947 | 2410 | pmd_config_changed(const struct dp_netdev *dp, const char *cmask) |
f2eee189 | 2411 | { |
a14b8947 IM |
2412 | struct dp_netdev_port *port; |
2413 | ||
2414 | CMAP_FOR_EACH (port, node, &dp->ports) { | |
2415 | struct netdev *netdev = port->netdev; | |
2416 | int requested_n_rxq = netdev_requested_n_rxq(netdev); | |
2417 | if (netdev_is_pmd(netdev) | |
2418 | && port->latest_requested_n_rxq != requested_n_rxq) { | |
2419 | return true; | |
f2eee189 AW |
2420 | } |
2421 | } | |
a14b8947 IM |
2422 | |
2423 | if (dp->pmd_cmask != NULL && cmask != NULL) { | |
2424 | return strcmp(dp->pmd_cmask, cmask); | |
2425 | } else { | |
2426 | return (dp->pmd_cmask != NULL || cmask != NULL); | |
2427 | } | |
f2eee189 AW |
2428 | } |
2429 | ||
2430 | /* Resets pmd threads if the configuration for 'rxq's or cpu mask changes. */ | |
2431 | static int | |
a14b8947 | 2432 | dpif_netdev_pmd_set(struct dpif *dpif, const char *cmask) |
f2eee189 AW |
2433 | { |
2434 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
2435 | ||
a14b8947 | 2436 | if (pmd_config_changed(dp, cmask)) { |
f2eee189 AW |
2437 | struct dp_netdev_port *port; |
2438 | ||
2439 | dp_netdev_destroy_all_pmds(dp); | |
2440 | ||
2441 | CMAP_FOR_EACH (port, node, &dp->ports) { | |
a14b8947 IM |
2442 | struct netdev *netdev = port->netdev; |
2443 | int requested_n_rxq = netdev_requested_n_rxq(netdev); | |
2444 | if (netdev_is_pmd(port->netdev) | |
2445 | && port->latest_requested_n_rxq != requested_n_rxq) { | |
f2eee189 AW |
2446 | int i, err; |
2447 | ||
2448 | /* Closes the existing 'rxq's. */ | |
2449 | for (i = 0; i < netdev_n_rxq(port->netdev); i++) { | |
2450 | netdev_rxq_close(port->rxq[i]); | |
2451 | port->rxq[i] = NULL; | |
2452 | } | |
490e82af | 2453 | port->n_rxq = 0; |
f2eee189 AW |
2454 | |
2455 | /* Sets the new rx queue config. */ | |
3bcc10c0 DDP |
2456 | err = netdev_set_multiq(port->netdev, |
2457 | ovs_numa_get_n_cores() + 1, | |
a14b8947 | 2458 | requested_n_rxq); |
7251515e | 2459 | if (err && (err != EOPNOTSUPP)) { |
f2eee189 AW |
2460 | VLOG_ERR("Failed to set dpdk interface %s rx_queue to:" |
2461 | " %u", netdev_get_name(port->netdev), | |
a14b8947 | 2462 | requested_n_rxq); |
f2eee189 AW |
2463 | return err; |
2464 | } | |
a14b8947 | 2465 | port->latest_requested_n_rxq = requested_n_rxq; |
f2eee189 | 2466 | /* If the set_multiq() above succeeds, reopens the 'rxq's. */ |
490e82af DDP |
2467 | port->n_rxq = netdev_n_rxq(port->netdev); |
2468 | port->rxq = xrealloc(port->rxq, sizeof *port->rxq * port->n_rxq); | |
2469 | for (i = 0; i < port->n_rxq; i++) { | |
f2eee189 AW |
2470 | netdev_rxq_open(port->netdev, &port->rxq[i], i); |
2471 | } | |
2472 | } | |
2473 | } | |
f2eee189 AW |
2474 | /* Reconfigures the cpu mask. */ |
2475 | ovs_numa_set_cpu_mask(cmask); | |
2476 | free(dp->pmd_cmask); | |
2477 | dp->pmd_cmask = cmask ? xstrdup(cmask) : NULL; | |
2478 | ||
2479 | /* Restores the non-pmd. */ | |
2480 | dp_netdev_set_nonpmd(dp); | |
2481 | /* Restores all pmd threads. */ | |
2482 | dp_netdev_reset_pmd_threads(dp); | |
2483 | } | |
2484 | ||
2485 | return 0; | |
2486 | } | |
2487 | ||
5bf93d67 EJ |
2488 | static int |
2489 | dpif_netdev_queue_to_priority(const struct dpif *dpif OVS_UNUSED, | |
2490 | uint32_t queue_id, uint32_t *priority) | |
2491 | { | |
2492 | *priority = queue_id; | |
2493 | return 0; | |
2494 | } | |
2495 | ||
72865317 | 2496 | \f |
9ff55ae2 DDP |
2497 | /* Creates and returns a new 'struct dp_netdev_actions', whose actions are |
2498 | * a copy of the 'ofpacts_len' bytes of 'ofpacts'. */ | |
a84cb64a BP |
2499 | struct dp_netdev_actions * |
2500 | dp_netdev_actions_create(const struct nlattr *actions, size_t size) | |
2501 | { | |
2502 | struct dp_netdev_actions *netdev_actions; | |
2503 | ||
9ff55ae2 DDP |
2504 | netdev_actions = xmalloc(sizeof *netdev_actions + size); |
2505 | memcpy(netdev_actions->actions, actions, size); | |
a84cb64a BP |
2506 | netdev_actions->size = size; |
2507 | ||
2508 | return netdev_actions; | |
2509 | } | |
2510 | ||
a84cb64a | 2511 | struct dp_netdev_actions * |
61e7deb1 | 2512 | dp_netdev_flow_get_actions(const struct dp_netdev_flow *flow) |
a84cb64a | 2513 | { |
61e7deb1 | 2514 | return ovsrcu_get(struct dp_netdev_actions *, &flow->actions); |
a84cb64a BP |
2515 | } |
2516 | ||
61e7deb1 BP |
2517 | static void |
2518 | dp_netdev_actions_free(struct dp_netdev_actions *actions) | |
a84cb64a | 2519 | { |
61e7deb1 | 2520 | free(actions); |
a84cb64a BP |
2521 | } |
2522 | \f | |
55e3ca97 DDP |
2523 | static inline unsigned long long |
2524 | cycles_counter(void) | |
2525 | { | |
2526 | #ifdef DPDK_NETDEV | |
2527 | return rte_get_tsc_cycles(); | |
2528 | #else | |
2529 | return 0; | |
2530 | #endif | |
2531 | } | |
2532 | ||
2533 | /* Fake mutex to make sure that the calls to cycles_count_* are balanced */ | |
2534 | extern struct ovs_mutex cycles_counter_fake_mutex; | |
2535 | ||
2536 | /* Start counting cycles. Must be followed by 'cycles_count_end()' */ | |
2537 | static inline void | |
2538 | cycles_count_start(struct dp_netdev_pmd_thread *pmd) | |
2539 | OVS_ACQUIRES(&cycles_counter_fake_mutex) | |
2540 | OVS_NO_THREAD_SAFETY_ANALYSIS | |
2541 | { | |
2542 | pmd->last_cycles = cycles_counter(); | |
2543 | } | |
2544 | ||
2545 | /* Stop counting cycles and add them to the counter 'type' */ | |
2546 | static inline void | |
2547 | cycles_count_end(struct dp_netdev_pmd_thread *pmd, | |
2548 | enum pmd_cycles_counter_type type) | |
2549 | OVS_RELEASES(&cycles_counter_fake_mutex) | |
2550 | OVS_NO_THREAD_SAFETY_ANALYSIS | |
2551 | { | |
2552 | unsigned long long interval = cycles_counter() - pmd->last_cycles; | |
2553 | ||
2554 | non_atomic_ullong_add(&pmd->cycles.n[type], interval); | |
2555 | } | |
e4cfed38 | 2556 | |
5794e276 | 2557 | static void |
65f13b50 | 2558 | dp_netdev_process_rxq_port(struct dp_netdev_pmd_thread *pmd, |
9bbf1c3d DDP |
2559 | struct dp_netdev_port *port, |
2560 | struct netdev_rxq *rxq) | |
e4cfed38 | 2561 | { |
1895cc8d PS |
2562 | struct dp_packet_batch batch; |
2563 | int error; | |
e4cfed38 | 2564 | |
1895cc8d | 2565 | dp_packet_batch_init(&batch); |
55e3ca97 | 2566 | cycles_count_start(pmd); |
1895cc8d | 2567 | error = netdev_rxq_recv(rxq, &batch); |
55e3ca97 | 2568 | cycles_count_end(pmd, PMD_CYCLES_POLLING); |
e4cfed38 | 2569 | if (!error) { |
3c33f0ff | 2570 | *recirc_depth_get() = 0; |
41ccaa24 | 2571 | |
55e3ca97 | 2572 | cycles_count_start(pmd); |
1895cc8d | 2573 | dp_netdev_input(pmd, &batch, port->port_no); |
55e3ca97 | 2574 | cycles_count_end(pmd, PMD_CYCLES_PROCESSING); |
e4cfed38 | 2575 | } else if (error != EAGAIN && error != EOPNOTSUPP) { |
3c33f0ff | 2576 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
e4cfed38 PS |
2577 | |
2578 | VLOG_ERR_RL(&rl, "error receiving data from %s: %s", | |
3c33f0ff | 2579 | netdev_get_name(port->netdev), ovs_strerror(error)); |
e4cfed38 PS |
2580 | } |
2581 | } | |
2582 | ||
a36de779 PS |
2583 | /* Return true if needs to revalidate datapath flows. */ |
2584 | static bool | |
e4cfed38 PS |
2585 | dpif_netdev_run(struct dpif *dpif) |
2586 | { | |
2587 | struct dp_netdev_port *port; | |
2588 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
b19befae AW |
2589 | struct dp_netdev_pmd_thread *non_pmd = dp_netdev_get_pmd(dp, |
2590 | NON_PMD_CORE_ID); | |
a36de779 | 2591 | uint64_t new_tnl_seq; |
e4cfed38 | 2592 | |
65f13b50 | 2593 | ovs_mutex_lock(&dp->non_pmd_mutex); |
a532e683 | 2594 | CMAP_FOR_EACH (port, node, &dp->ports) { |
55c955bd PS |
2595 | if (!netdev_is_pmd(port->netdev)) { |
2596 | int i; | |
2597 | ||
490e82af | 2598 | for (i = 0; i < port->n_rxq; i++) { |
65f13b50 | 2599 | dp_netdev_process_rxq_port(non_pmd, port, port->rxq[i]); |
55c955bd | 2600 | } |
e4cfed38 PS |
2601 | } |
2602 | } | |
65f13b50 | 2603 | ovs_mutex_unlock(&dp->non_pmd_mutex); |
1c1e46ed AW |
2604 | dp_netdev_pmd_unref(non_pmd); |
2605 | ||
53902038 | 2606 | tnl_neigh_cache_run(); |
7f9b8504 | 2607 | tnl_port_map_run(); |
a36de779 PS |
2608 | new_tnl_seq = seq_read(tnl_conf_seq); |
2609 | ||
2610 | if (dp->last_tnl_conf_seq != new_tnl_seq) { | |
2611 | dp->last_tnl_conf_seq = new_tnl_seq; | |
2612 | return true; | |
2613 | } | |
2614 | return false; | |
e4cfed38 PS |
2615 | } |
2616 | ||
2617 | static void | |
2618 | dpif_netdev_wait(struct dpif *dpif) | |
2619 | { | |
2620 | struct dp_netdev_port *port; | |
2621 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
2622 | ||
59e6d833 | 2623 | ovs_mutex_lock(&dp_netdev_mutex); |
a532e683 | 2624 | CMAP_FOR_EACH (port, node, &dp->ports) { |
55c955bd PS |
2625 | if (!netdev_is_pmd(port->netdev)) { |
2626 | int i; | |
2627 | ||
490e82af | 2628 | for (i = 0; i < port->n_rxq; i++) { |
55c955bd PS |
2629 | netdev_rxq_wait(port->rxq[i]); |
2630 | } | |
e4cfed38 PS |
2631 | } |
2632 | } | |
59e6d833 | 2633 | ovs_mutex_unlock(&dp_netdev_mutex); |
a36de779 | 2634 | seq_wait(tnl_conf_seq, dp->last_tnl_conf_seq); |
e4cfed38 PS |
2635 | } |
2636 | ||
e4cfed38 | 2637 | static int |
62453dad | 2638 | pmd_load_queues(struct dp_netdev_pmd_thread *pmd, struct rxq_poll **ppoll_list) |
ae7ad0a1 | 2639 | OVS_REQUIRES(pmd->poll_mutex) |
e4cfed38 | 2640 | { |
f7791740 | 2641 | struct rxq_poll *poll_list = *ppoll_list; |
ae7ad0a1 IM |
2642 | struct rxq_poll *poll; |
2643 | int i; | |
e4cfed38 | 2644 | |
ae7ad0a1 | 2645 | poll_list = xrealloc(poll_list, pmd->poll_cnt * sizeof *poll_list); |
a1fdee13 | 2646 | |
ae7ad0a1 IM |
2647 | i = 0; |
2648 | LIST_FOR_EACH (poll, node, &pmd->poll_list) { | |
ae7ad0a1 | 2649 | poll_list[i++] = *poll; |
e4cfed38 PS |
2650 | } |
2651 | ||
e4cfed38 | 2652 | *ppoll_list = poll_list; |
ae7ad0a1 | 2653 | return pmd->poll_cnt; |
e4cfed38 PS |
2654 | } |
2655 | ||
6c3eee82 | 2656 | static void * |
e4cfed38 | 2657 | pmd_thread_main(void *f_) |
6c3eee82 | 2658 | { |
65f13b50 | 2659 | struct dp_netdev_pmd_thread *pmd = f_; |
e4cfed38 | 2660 | unsigned int lc = 0; |
f7791740 | 2661 | struct rxq_poll *poll_list; |
84067a4c | 2662 | unsigned int port_seq = PMD_INITIAL_SEQ; |
e4cfed38 PS |
2663 | int poll_cnt; |
2664 | int i; | |
6c3eee82 | 2665 | |
e4cfed38 PS |
2666 | poll_cnt = 0; |
2667 | poll_list = NULL; | |
2668 | ||
65f13b50 AW |
2669 | /* Stores the pmd thread's 'pmd' to 'per_pmd_key'. */ |
2670 | ovsthread_setspecific(pmd->dp->per_pmd_key, pmd); | |
2671 | pmd_thread_setaffinity_cpu(pmd->core_id); | |
e4cfed38 | 2672 | reload: |
65f13b50 | 2673 | emc_cache_init(&pmd->flow_cache); |
ae7ad0a1 IM |
2674 | |
2675 | ovs_mutex_lock(&pmd->poll_mutex); | |
62453dad | 2676 | poll_cnt = pmd_load_queues(pmd, &poll_list); |
ae7ad0a1 | 2677 | ovs_mutex_unlock(&pmd->poll_mutex); |
6c3eee82 | 2678 | |
7dd671f0 MK |
2679 | /* List port/core affinity */ |
2680 | for (i = 0; i < poll_cnt; i++) { | |
ce179f11 IM |
2681 | VLOG_DBG("Core %d processing port \'%s\' with queue-id %d\n", |
2682 | pmd->core_id, netdev_get_name(poll_list[i].port->netdev), | |
2683 | netdev_rxq_get_queue_id(poll_list[i].rx)); | |
7dd671f0 MK |
2684 | } |
2685 | ||
accf8626 AW |
2686 | /* Signal here to make sure the pmd finishes |
2687 | * reloading the updated configuration. */ | |
2688 | dp_netdev_pmd_reload_done(pmd); | |
2689 | ||
e4cfed38 | 2690 | for (;;) { |
e4cfed38 | 2691 | for (i = 0; i < poll_cnt; i++) { |
65f13b50 | 2692 | dp_netdev_process_rxq_port(pmd, poll_list[i].port, poll_list[i].rx); |
e4cfed38 PS |
2693 | } |
2694 | ||
2695 | if (lc++ > 1024) { | |
84067a4c | 2696 | unsigned int seq; |
6c3eee82 | 2697 | |
e4cfed38 | 2698 | lc = 0; |
84067a4c | 2699 | |
67ad54cb | 2700 | emc_cache_slow_sweep(&pmd->flow_cache); |
fbe0962b | 2701 | coverage_try_clear(); |
84067a4c JR |
2702 | ovsrcu_quiesce(); |
2703 | ||
65f13b50 | 2704 | atomic_read_relaxed(&pmd->change_seq, &seq); |
84067a4c JR |
2705 | if (seq != port_seq) { |
2706 | port_seq = seq; | |
6c3eee82 BP |
2707 | break; |
2708 | } | |
2709 | } | |
e4cfed38 | 2710 | } |
6c3eee82 | 2711 | |
65f13b50 | 2712 | emc_cache_uninit(&pmd->flow_cache); |
9bbf1c3d | 2713 | |
65f13b50 | 2714 | if (!latch_is_set(&pmd->exit_latch)){ |
e4cfed38 PS |
2715 | goto reload; |
2716 | } | |
6c3eee82 | 2717 | |
accf8626 AW |
2718 | dp_netdev_pmd_reload_done(pmd); |
2719 | ||
e4cfed38 | 2720 | free(poll_list); |
6c3eee82 BP |
2721 | return NULL; |
2722 | } | |
2723 | ||
6b31e073 RW |
2724 | static void |
2725 | dp_netdev_disable_upcall(struct dp_netdev *dp) | |
2726 | OVS_ACQUIRES(dp->upcall_rwlock) | |
2727 | { | |
2728 | fat_rwlock_wrlock(&dp->upcall_rwlock); | |
2729 | } | |
2730 | ||
2731 | static void | |
2732 | dpif_netdev_disable_upcall(struct dpif *dpif) | |
2733 | OVS_NO_THREAD_SAFETY_ANALYSIS | |
2734 | { | |
2735 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
2736 | dp_netdev_disable_upcall(dp); | |
2737 | } | |
2738 | ||
2739 | static void | |
2740 | dp_netdev_enable_upcall(struct dp_netdev *dp) | |
2741 | OVS_RELEASES(dp->upcall_rwlock) | |
2742 | { | |
2743 | fat_rwlock_unlock(&dp->upcall_rwlock); | |
2744 | } | |
2745 | ||
2746 | static void | |
2747 | dpif_netdev_enable_upcall(struct dpif *dpif) | |
2748 | OVS_NO_THREAD_SAFETY_ANALYSIS | |
2749 | { | |
2750 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
2751 | dp_netdev_enable_upcall(dp); | |
2752 | } | |
2753 | ||
ae7ad0a1 | 2754 | static void |
accf8626 AW |
2755 | dp_netdev_pmd_reload_done(struct dp_netdev_pmd_thread *pmd) |
2756 | { | |
2757 | ovs_mutex_lock(&pmd->cond_mutex); | |
2758 | xpthread_cond_signal(&pmd->cond); | |
2759 | ovs_mutex_unlock(&pmd->cond_mutex); | |
2760 | } | |
2761 | ||
1c1e46ed AW |
2762 | /* Finds and refs the dp_netdev_pmd_thread on core 'core_id'. Returns |
2763 | * the pointer if succeeds, otherwise, NULL. | |
2764 | * | |
2765 | * Caller must unrefs the returned reference. */ | |
65f13b50 | 2766 | static struct dp_netdev_pmd_thread * |
bd5131ba | 2767 | dp_netdev_get_pmd(struct dp_netdev *dp, unsigned core_id) |
65f13b50 AW |
2768 | { |
2769 | struct dp_netdev_pmd_thread *pmd; | |
55847abe | 2770 | const struct cmap_node *pnode; |
65f13b50 | 2771 | |
b19befae | 2772 | pnode = cmap_find(&dp->poll_threads, hash_int(core_id, 0)); |
1c1e46ed AW |
2773 | if (!pnode) { |
2774 | return NULL; | |
2775 | } | |
65f13b50 AW |
2776 | pmd = CONTAINER_OF(pnode, struct dp_netdev_pmd_thread, node); |
2777 | ||
1c1e46ed | 2778 | return dp_netdev_pmd_try_ref(pmd) ? pmd : NULL; |
65f13b50 AW |
2779 | } |
2780 | ||
f2eee189 AW |
2781 | /* Sets the 'struct dp_netdev_pmd_thread' for non-pmd threads. */ |
2782 | static void | |
2783 | dp_netdev_set_nonpmd(struct dp_netdev *dp) | |
2784 | { | |
2785 | struct dp_netdev_pmd_thread *non_pmd; | |
2786 | ||
2787 | non_pmd = xzalloc(sizeof *non_pmd); | |
2788 | dp_netdev_configure_pmd(non_pmd, dp, 0, NON_PMD_CORE_ID, | |
2789 | OVS_NUMA_UNSPEC); | |
2790 | } | |
2791 | ||
1c1e46ed AW |
2792 | /* Caller must have valid pointer to 'pmd'. */ |
2793 | static bool | |
2794 | dp_netdev_pmd_try_ref(struct dp_netdev_pmd_thread *pmd) | |
2795 | { | |
2796 | return ovs_refcount_try_ref_rcu(&pmd->ref_cnt); | |
2797 | } | |
2798 | ||
2799 | static void | |
2800 | dp_netdev_pmd_unref(struct dp_netdev_pmd_thread *pmd) | |
2801 | { | |
2802 | if (pmd && ovs_refcount_unref(&pmd->ref_cnt) == 1) { | |
2803 | ovsrcu_postpone(dp_netdev_destroy_pmd, pmd); | |
2804 | } | |
2805 | } | |
2806 | ||
2807 | /* Given cmap position 'pos', tries to ref the next node. If try_ref() | |
2808 | * fails, keeps checking for next node until reaching the end of cmap. | |
2809 | * | |
2810 | * Caller must unrefs the returned reference. */ | |
2811 | static struct dp_netdev_pmd_thread * | |
2812 | dp_netdev_pmd_get_next(struct dp_netdev *dp, struct cmap_position *pos) | |
2813 | { | |
2814 | struct dp_netdev_pmd_thread *next; | |
2815 | ||
2816 | do { | |
2817 | struct cmap_node *node; | |
2818 | ||
2819 | node = cmap_next_position(&dp->poll_threads, pos); | |
2820 | next = node ? CONTAINER_OF(node, struct dp_netdev_pmd_thread, node) | |
2821 | : NULL; | |
2822 | } while (next && !dp_netdev_pmd_try_ref(next)); | |
2823 | ||
2824 | return next; | |
2825 | } | |
2826 | ||
65f13b50 | 2827 | /* Configures the 'pmd' based on the input argument. */ |
6c3eee82 | 2828 | static void |
65f13b50 | 2829 | dp_netdev_configure_pmd(struct dp_netdev_pmd_thread *pmd, struct dp_netdev *dp, |
bd5131ba | 2830 | int index, unsigned core_id, int numa_id) |
65f13b50 AW |
2831 | { |
2832 | pmd->dp = dp; | |
2833 | pmd->index = index; | |
2834 | pmd->core_id = core_id; | |
2835 | pmd->numa_id = numa_id; | |
ae7ad0a1 | 2836 | pmd->poll_cnt = 0; |
1c1e46ed | 2837 | |
347ba9bb IM |
2838 | atomic_init(&pmd->tx_qid, |
2839 | (core_id == NON_PMD_CORE_ID) | |
2840 | ? ovs_numa_get_n_cores() | |
2841 | : get_n_pmd_threads(dp)); | |
2842 | ||
1c1e46ed | 2843 | ovs_refcount_init(&pmd->ref_cnt); |
65f13b50 AW |
2844 | latch_init(&pmd->exit_latch); |
2845 | atomic_init(&pmd->change_seq, PMD_INITIAL_SEQ); | |
accf8626 AW |
2846 | xpthread_cond_init(&pmd->cond, NULL); |
2847 | ovs_mutex_init(&pmd->cond_mutex); | |
1c1e46ed | 2848 | ovs_mutex_init(&pmd->flow_mutex); |
ae7ad0a1 | 2849 | ovs_mutex_init(&pmd->poll_mutex); |
1c1e46ed AW |
2850 | dpcls_init(&pmd->cls); |
2851 | cmap_init(&pmd->flow_table); | |
417e7e66 | 2852 | ovs_list_init(&pmd->poll_list); |
65f13b50 AW |
2853 | /* init the 'flow_cache' since there is no |
2854 | * actual thread created for NON_PMD_CORE_ID. */ | |
2855 | if (core_id == NON_PMD_CORE_ID) { | |
2856 | emc_cache_init(&pmd->flow_cache); | |
2857 | } | |
2858 | cmap_insert(&dp->poll_threads, CONST_CAST(struct cmap_node *, &pmd->node), | |
2859 | hash_int(core_id, 0)); | |
2860 | } | |
2861 | ||
1c1e46ed AW |
2862 | static void |
2863 | dp_netdev_destroy_pmd(struct dp_netdev_pmd_thread *pmd) | |
2864 | { | |
2865 | dp_netdev_pmd_flow_flush(pmd); | |
2866 | dpcls_destroy(&pmd->cls); | |
2867 | cmap_destroy(&pmd->flow_table); | |
2868 | ovs_mutex_destroy(&pmd->flow_mutex); | |
2869 | latch_destroy(&pmd->exit_latch); | |
2870 | xpthread_cond_destroy(&pmd->cond); | |
2871 | ovs_mutex_destroy(&pmd->cond_mutex); | |
ae7ad0a1 | 2872 | ovs_mutex_destroy(&pmd->poll_mutex); |
1c1e46ed AW |
2873 | free(pmd); |
2874 | } | |
2875 | ||
2876 | /* Stops the pmd thread, removes it from the 'dp->poll_threads', | |
2877 | * and unrefs the struct. */ | |
65f13b50 | 2878 | static void |
e4e74c3a | 2879 | dp_netdev_del_pmd(struct dp_netdev *dp, struct dp_netdev_pmd_thread *pmd) |
6c3eee82 | 2880 | { |
65f13b50 | 2881 | /* Uninit the 'flow_cache' since there is |
1c1e46ed | 2882 | * no actual thread uninit it for NON_PMD_CORE_ID. */ |
65f13b50 AW |
2883 | if (pmd->core_id == NON_PMD_CORE_ID) { |
2884 | emc_cache_uninit(&pmd->flow_cache); | |
2885 | } else { | |
2886 | latch_set(&pmd->exit_latch); | |
2887 | dp_netdev_reload_pmd__(pmd); | |
2888 | ovs_numa_unpin_core(pmd->core_id); | |
2889 | xpthread_join(pmd->thread, NULL); | |
2890 | } | |
ae7ad0a1 IM |
2891 | |
2892 | /* Unref all ports and free poll_list. */ | |
cc245ce8 | 2893 | dp_netdev_pmd_clear_poll_list(pmd); |
ae7ad0a1 | 2894 | |
e4e74c3a AW |
2895 | /* Purges the 'pmd''s flows after stopping the thread, but before |
2896 | * destroying the flows, so that the flow stats can be collected. */ | |
2897 | if (dp->dp_purge_cb) { | |
2898 | dp->dp_purge_cb(dp->dp_purge_aux, pmd->core_id); | |
2899 | } | |
65f13b50 | 2900 | cmap_remove(&pmd->dp->poll_threads, &pmd->node, hash_int(pmd->core_id, 0)); |
1c1e46ed | 2901 | dp_netdev_pmd_unref(pmd); |
65f13b50 | 2902 | } |
6c3eee82 | 2903 | |
65f13b50 AW |
2904 | /* Destroys all pmd threads. */ |
2905 | static void | |
2906 | dp_netdev_destroy_all_pmds(struct dp_netdev *dp) | |
2907 | { | |
2908 | struct dp_netdev_pmd_thread *pmd; | |
d916785c DDP |
2909 | struct dp_netdev_pmd_thread **pmd_list; |
2910 | size_t k = 0, n_pmds; | |
2911 | ||
2912 | n_pmds = cmap_count(&dp->poll_threads); | |
2913 | pmd_list = xcalloc(n_pmds, sizeof *pmd_list); | |
65f13b50 AW |
2914 | |
2915 | CMAP_FOR_EACH (pmd, node, &dp->poll_threads) { | |
d916785c DDP |
2916 | /* We cannot call dp_netdev_del_pmd(), since it alters |
2917 | * 'dp->poll_threads' (while we're iterating it) and it | |
2918 | * might quiesce. */ | |
2919 | ovs_assert(k < n_pmds); | |
2920 | pmd_list[k++] = pmd; | |
6c3eee82 | 2921 | } |
d916785c DDP |
2922 | |
2923 | for (size_t i = 0; i < k; i++) { | |
2924 | dp_netdev_del_pmd(dp, pmd_list[i]); | |
2925 | } | |
2926 | free(pmd_list); | |
65f13b50 | 2927 | } |
6c3eee82 | 2928 | |
347ba9bb IM |
2929 | /* Deletes all pmd threads on numa node 'numa_id' and |
2930 | * fixes tx_qids of other threads to keep them sequential. */ | |
65f13b50 AW |
2931 | static void |
2932 | dp_netdev_del_pmds_on_numa(struct dp_netdev *dp, int numa_id) | |
2933 | { | |
2934 | struct dp_netdev_pmd_thread *pmd; | |
347ba9bb IM |
2935 | int n_pmds_on_numa, n_pmds; |
2936 | int *free_idx, k = 0; | |
d916785c | 2937 | struct dp_netdev_pmd_thread **pmd_list; |
347ba9bb IM |
2938 | |
2939 | n_pmds_on_numa = get_n_pmd_threads_on_numa(dp, numa_id); | |
d916785c DDP |
2940 | free_idx = xcalloc(n_pmds_on_numa, sizeof *free_idx); |
2941 | pmd_list = xcalloc(n_pmds_on_numa, sizeof *pmd_list); | |
6c3eee82 | 2942 | |
65f13b50 | 2943 | CMAP_FOR_EACH (pmd, node, &dp->poll_threads) { |
d916785c DDP |
2944 | /* We cannot call dp_netdev_del_pmd(), since it alters |
2945 | * 'dp->poll_threads' (while we're iterating it) and it | |
2946 | * might quiesce. */ | |
65f13b50 | 2947 | if (pmd->numa_id == numa_id) { |
347ba9bb | 2948 | atomic_read_relaxed(&pmd->tx_qid, &free_idx[k]); |
d916785c DDP |
2949 | pmd_list[k] = pmd; |
2950 | ovs_assert(k < n_pmds_on_numa); | |
347ba9bb | 2951 | k++; |
65f13b50 | 2952 | } |
6c3eee82 | 2953 | } |
347ba9bb | 2954 | |
d916785c DDP |
2955 | for (int i = 0; i < k; i++) { |
2956 | dp_netdev_del_pmd(dp, pmd_list[i]); | |
2957 | } | |
2958 | ||
347ba9bb IM |
2959 | n_pmds = get_n_pmd_threads(dp); |
2960 | CMAP_FOR_EACH (pmd, node, &dp->poll_threads) { | |
2961 | int old_tx_qid; | |
2962 | ||
2963 | atomic_read_relaxed(&pmd->tx_qid, &old_tx_qid); | |
2964 | ||
2965 | if (old_tx_qid >= n_pmds) { | |
2966 | int new_tx_qid = free_idx[--k]; | |
2967 | ||
2968 | atomic_store_relaxed(&pmd->tx_qid, new_tx_qid); | |
2969 | } | |
2970 | } | |
2971 | ||
d916785c | 2972 | free(pmd_list); |
347ba9bb | 2973 | free(free_idx); |
65f13b50 | 2974 | } |
6c3eee82 | 2975 | |
cc245ce8 IM |
2976 | /* Deletes all rx queues from pmd->poll_list. */ |
2977 | static void | |
2978 | dp_netdev_pmd_clear_poll_list(struct dp_netdev_pmd_thread *pmd) | |
2979 | { | |
2980 | struct rxq_poll *poll; | |
2981 | ||
2982 | ovs_mutex_lock(&pmd->poll_mutex); | |
2983 | LIST_FOR_EACH_POP (poll, node, &pmd->poll_list) { | |
cc245ce8 IM |
2984 | free(poll); |
2985 | } | |
2986 | pmd->poll_cnt = 0; | |
2987 | ovs_mutex_unlock(&pmd->poll_mutex); | |
2988 | } | |
2989 | ||
2990 | /* Deletes all rx queues of 'port' from poll_list of pmd thread and | |
2991 | * reloads it if poll_list was changed. */ | |
2992 | static void | |
2993 | dp_netdev_del_port_from_pmd(struct dp_netdev_port *port, | |
2994 | struct dp_netdev_pmd_thread *pmd) | |
2995 | { | |
2996 | struct rxq_poll *poll, *next; | |
2997 | bool found = false; | |
2998 | ||
2999 | ovs_mutex_lock(&pmd->poll_mutex); | |
3000 | LIST_FOR_EACH_SAFE (poll, next, node, &pmd->poll_list) { | |
3001 | if (poll->port == port) { | |
3002 | found = true; | |
417e7e66 | 3003 | ovs_list_remove(&poll->node); |
cc245ce8 IM |
3004 | pmd->poll_cnt--; |
3005 | free(poll); | |
3006 | } | |
3007 | } | |
3008 | ovs_mutex_unlock(&pmd->poll_mutex); | |
3009 | if (found) { | |
3010 | dp_netdev_reload_pmd__(pmd); | |
3011 | } | |
3012 | } | |
3013 | ||
3014 | /* Deletes all rx queues of 'port' from all pmd threads of dp and | |
3015 | * reloads them if needed. */ | |
3016 | static void | |
3017 | dp_netdev_del_port_from_all_pmds(struct dp_netdev *dp, | |
3018 | struct dp_netdev_port *port) | |
3019 | { | |
3020 | int numa_id = netdev_get_numa_id(port->netdev); | |
3021 | struct dp_netdev_pmd_thread *pmd; | |
3022 | ||
3023 | CMAP_FOR_EACH (pmd, node, &dp->poll_threads) { | |
3024 | if (pmd->numa_id == numa_id) { | |
3025 | dp_netdev_del_port_from_pmd(port, pmd); | |
3026 | } | |
3027 | } | |
3028 | } | |
3029 | ||
ae7ad0a1 IM |
3030 | /* Returns PMD thread from this numa node with fewer rx queues to poll. |
3031 | * Returns NULL if there is no PMD threads on this numa node. | |
3032 | * Can be called safely only by main thread. */ | |
3033 | static struct dp_netdev_pmd_thread * | |
3034 | dp_netdev_less_loaded_pmd_on_numa(struct dp_netdev *dp, int numa_id) | |
3035 | { | |
3036 | int min_cnt = -1; | |
3037 | struct dp_netdev_pmd_thread *pmd, *res = NULL; | |
3038 | ||
3039 | CMAP_FOR_EACH (pmd, node, &dp->poll_threads) { | |
3040 | if (pmd->numa_id == numa_id | |
3041 | && (min_cnt > pmd->poll_cnt || res == NULL)) { | |
3042 | min_cnt = pmd->poll_cnt; | |
3043 | res = pmd; | |
3044 | } | |
3045 | } | |
3046 | ||
3047 | return res; | |
3048 | } | |
3049 | ||
3050 | /* Adds rx queue to poll_list of PMD thread. */ | |
3051 | static void | |
3052 | dp_netdev_add_rxq_to_pmd(struct dp_netdev_pmd_thread *pmd, | |
3053 | struct dp_netdev_port *port, struct netdev_rxq *rx) | |
3054 | OVS_REQUIRES(pmd->poll_mutex) | |
3055 | { | |
3056 | struct rxq_poll *poll = xmalloc(sizeof *poll); | |
3057 | ||
ae7ad0a1 IM |
3058 | poll->port = port; |
3059 | poll->rx = rx; | |
3060 | ||
417e7e66 | 3061 | ovs_list_push_back(&pmd->poll_list, &poll->node); |
ae7ad0a1 IM |
3062 | pmd->poll_cnt++; |
3063 | } | |
3064 | ||
cc245ce8 IM |
3065 | /* Distributes all rx queues of 'port' between all PMD threads and reloads |
3066 | * them if needed. */ | |
3067 | static void | |
3068 | dp_netdev_add_port_to_pmds(struct dp_netdev *dp, struct dp_netdev_port *port) | |
3069 | { | |
3070 | int numa_id = netdev_get_numa_id(port->netdev); | |
3071 | struct dp_netdev_pmd_thread *pmd; | |
3072 | struct hmapx to_reload; | |
3073 | struct hmapx_node *node; | |
3074 | int i; | |
3075 | ||
3076 | hmapx_init(&to_reload); | |
3077 | /* Cannot create pmd threads for invalid numa node. */ | |
3078 | ovs_assert(ovs_numa_numa_id_is_valid(numa_id)); | |
3079 | ||
490e82af | 3080 | for (i = 0; i < port->n_rxq; i++) { |
cc245ce8 IM |
3081 | pmd = dp_netdev_less_loaded_pmd_on_numa(dp, numa_id); |
3082 | if (!pmd) { | |
3083 | /* There is no pmd threads on this numa node. */ | |
3084 | dp_netdev_set_pmds_on_numa(dp, numa_id); | |
3085 | /* Assigning of rx queues done. */ | |
3086 | break; | |
3087 | } | |
3088 | ||
3089 | ovs_mutex_lock(&pmd->poll_mutex); | |
3090 | dp_netdev_add_rxq_to_pmd(pmd, port, port->rxq[i]); | |
3091 | ovs_mutex_unlock(&pmd->poll_mutex); | |
3092 | ||
3093 | hmapx_add(&to_reload, pmd); | |
3094 | } | |
3095 | ||
3096 | HMAPX_FOR_EACH (node, &to_reload) { | |
3097 | pmd = (struct dp_netdev_pmd_thread *) node->data; | |
3098 | dp_netdev_reload_pmd__(pmd); | |
3099 | } | |
3100 | ||
3101 | hmapx_destroy(&to_reload); | |
3102 | } | |
3103 | ||
65f13b50 AW |
3104 | /* Checks the numa node id of 'netdev' and starts pmd threads for |
3105 | * the numa node. */ | |
3106 | static void | |
3107 | dp_netdev_set_pmds_on_numa(struct dp_netdev *dp, int numa_id) | |
3108 | { | |
3109 | int n_pmds; | |
e4cfed38 | 3110 | |
65f13b50 AW |
3111 | if (!ovs_numa_numa_id_is_valid(numa_id)) { |
3112 | VLOG_ERR("Cannot create pmd threads due to numa id (%d)" | |
3113 | "invalid", numa_id); | |
3114 | return ; | |
3115 | } | |
3116 | ||
3117 | n_pmds = get_n_pmd_threads_on_numa(dp, numa_id); | |
3118 | ||
3119 | /* If there are already pmd threads created for the numa node | |
3120 | * in which 'netdev' is on, do nothing. Else, creates the | |
3121 | * pmd threads for the numa node. */ | |
3122 | if (!n_pmds) { | |
ae7ad0a1 | 3123 | int can_have, n_unpinned, i, index = 0; |
2aca813c | 3124 | struct dp_netdev_pmd_thread **pmds; |
ae7ad0a1 | 3125 | struct dp_netdev_port *port; |
65f13b50 AW |
3126 | |
3127 | n_unpinned = ovs_numa_get_n_unpinned_cores_on_numa(numa_id); | |
3128 | if (!n_unpinned) { | |
3129 | VLOG_ERR("Cannot create pmd threads due to out of unpinned " | |
27955e98 | 3130 | "cores on numa node %d", numa_id); |
65f13b50 AW |
3131 | return; |
3132 | } | |
6c3eee82 | 3133 | |
f2eee189 AW |
3134 | /* If cpu mask is specified, uses all unpinned cores, otherwise |
3135 | * tries creating NR_PMD_THREADS pmd threads. */ | |
3136 | can_have = dp->pmd_cmask ? n_unpinned : MIN(n_unpinned, NR_PMD_THREADS); | |
2aca813c | 3137 | pmds = xzalloc(can_have * sizeof *pmds); |
65f13b50 | 3138 | for (i = 0; i < can_have; i++) { |
bd5131ba | 3139 | unsigned core_id = ovs_numa_get_unpinned_core_on_numa(numa_id); |
2aca813c IM |
3140 | pmds[i] = xzalloc(sizeof **pmds); |
3141 | dp_netdev_configure_pmd(pmds[i], dp, i, core_id, numa_id); | |
3142 | } | |
ae7ad0a1 IM |
3143 | |
3144 | /* Distributes rx queues of this numa node between new pmd threads. */ | |
3145 | CMAP_FOR_EACH (port, node, &dp->ports) { | |
3146 | if (netdev_is_pmd(port->netdev) | |
3147 | && netdev_get_numa_id(port->netdev) == numa_id) { | |
490e82af | 3148 | for (i = 0; i < port->n_rxq; i++) { |
ae7ad0a1 IM |
3149 | /* Make thread-safety analyser happy. */ |
3150 | ovs_mutex_lock(&pmds[index]->poll_mutex); | |
3151 | dp_netdev_add_rxq_to_pmd(pmds[index], port, port->rxq[i]); | |
3152 | ovs_mutex_unlock(&pmds[index]->poll_mutex); | |
3153 | index = (index + 1) % can_have; | |
3154 | } | |
3155 | } | |
3156 | } | |
3157 | ||
3158 | /* Actual start of pmd threads. */ | |
2aca813c | 3159 | for (i = 0; i < can_have; i++) { |
2aca813c | 3160 | pmds[i]->thread = ovs_thread_create("pmd", pmd_thread_main, pmds[i]); |
65f13b50 | 3161 | } |
2aca813c | 3162 | free(pmds); |
65f13b50 | 3163 | VLOG_INFO("Created %d pmd threads on numa node %d", can_have, numa_id); |
6c3eee82 BP |
3164 | } |
3165 | } | |
e4cfed38 | 3166 | |
6c3eee82 | 3167 | \f |
f2eee189 AW |
3168 | /* Called after pmd threads config change. Restarts pmd threads with |
3169 | * new configuration. */ | |
3170 | static void | |
3171 | dp_netdev_reset_pmd_threads(struct dp_netdev *dp) | |
3172 | { | |
3173 | struct dp_netdev_port *port; | |
3174 | ||
3175 | CMAP_FOR_EACH (port, node, &dp->ports) { | |
3176 | if (netdev_is_pmd(port->netdev)) { | |
3177 | int numa_id = netdev_get_numa_id(port->netdev); | |
3178 | ||
3179 | dp_netdev_set_pmds_on_numa(dp, numa_id); | |
3180 | } | |
3181 | } | |
3182 | } | |
3183 | ||
b5cbbcf6 AZ |
3184 | static char * |
3185 | dpif_netdev_get_datapath_version(void) | |
3186 | { | |
3187 | return xstrdup("<built-in>"); | |
3188 | } | |
3189 | ||
72865317 | 3190 | static void |
1c1e46ed | 3191 | dp_netdev_flow_used(struct dp_netdev_flow *netdev_flow, int cnt, int size, |
11bfdadd | 3192 | uint16_t tcp_flags, long long now) |
72865317 | 3193 | { |
eb94da30 | 3194 | uint16_t flags; |
72865317 | 3195 | |
eb94da30 DDP |
3196 | atomic_store_relaxed(&netdev_flow->stats.used, now); |
3197 | non_atomic_ullong_add(&netdev_flow->stats.packet_count, cnt); | |
3198 | non_atomic_ullong_add(&netdev_flow->stats.byte_count, size); | |
3199 | atomic_read_relaxed(&netdev_flow->stats.tcp_flags, &flags); | |
3200 | flags |= tcp_flags; | |
3201 | atomic_store_relaxed(&netdev_flow->stats.tcp_flags, flags); | |
51852a57 BP |
3202 | } |
3203 | ||
3204 | static void | |
1c1e46ed AW |
3205 | dp_netdev_count_packet(struct dp_netdev_pmd_thread *pmd, |
3206 | enum dp_stat_type type, int cnt) | |
51852a57 | 3207 | { |
eb94da30 | 3208 | non_atomic_ullong_add(&pmd->stats.n[type], cnt); |
51852a57 BP |
3209 | } |
3210 | ||
623540e4 | 3211 | static int |
e14deea0 | 3212 | dp_netdev_upcall(struct dp_netdev_pmd_thread *pmd, struct dp_packet *packet_, |
7af12bd7 | 3213 | struct flow *flow, struct flow_wildcards *wc, ovs_u128 *ufid, |
623540e4 EJ |
3214 | enum dpif_upcall_type type, const struct nlattr *userdata, |
3215 | struct ofpbuf *actions, struct ofpbuf *put_actions) | |
3216 | { | |
1c1e46ed | 3217 | struct dp_netdev *dp = pmd->dp; |
6728d578 JG |
3218 | struct flow_tnl orig_tunnel; |
3219 | int err; | |
623540e4 | 3220 | |
623540e4 EJ |
3221 | if (OVS_UNLIKELY(!dp->upcall_cb)) { |
3222 | return ENODEV; | |
3223 | } | |
3224 | ||
6728d578 JG |
3225 | /* Upcall processing expects the Geneve options to be in the translated |
3226 | * format but we need to retain the raw format for datapath use. */ | |
3227 | orig_tunnel.flags = flow->tunnel.flags; | |
3228 | if (flow->tunnel.flags & FLOW_TNL_F_UDPIF) { | |
3229 | orig_tunnel.metadata.present.len = flow->tunnel.metadata.present.len; | |
3230 | memcpy(orig_tunnel.metadata.opts.gnv, flow->tunnel.metadata.opts.gnv, | |
3231 | flow->tunnel.metadata.present.len); | |
3232 | err = tun_metadata_from_geneve_udpif(&orig_tunnel, &orig_tunnel, | |
3233 | &flow->tunnel); | |
3234 | if (err) { | |
3235 | return err; | |
3236 | } | |
3237 | } | |
3238 | ||
623540e4 EJ |
3239 | if (OVS_UNLIKELY(!VLOG_DROP_DBG(&upcall_rl))) { |
3240 | struct ds ds = DS_EMPTY_INITIALIZER; | |
623540e4 | 3241 | char *packet_str; |
cf62fa4c | 3242 | struct ofpbuf key; |
5262eea1 JG |
3243 | struct odp_flow_key_parms odp_parms = { |
3244 | .flow = flow, | |
3245 | .mask = &wc->masks, | |
3246 | .odp_in_port = flow->in_port.odp_port, | |
2494ccd7 | 3247 | .support = dp_netdev_support, |
5262eea1 | 3248 | }; |
623540e4 EJ |
3249 | |
3250 | ofpbuf_init(&key, 0); | |
5262eea1 | 3251 | odp_flow_key_from_flow(&odp_parms, &key); |
cf62fa4c PS |
3252 | packet_str = ofp_packet_to_string(dp_packet_data(packet_), |
3253 | dp_packet_size(packet_)); | |
623540e4 | 3254 | |
6fd6ed71 | 3255 | odp_flow_key_format(key.data, key.size, &ds); |
623540e4 EJ |
3256 | |
3257 | VLOG_DBG("%s: %s upcall:\n%s\n%s", dp->name, | |
3258 | dpif_upcall_type_to_string(type), ds_cstr(&ds), packet_str); | |
3259 | ||
3260 | ofpbuf_uninit(&key); | |
3261 | free(packet_str); | |
6fd6ed71 | 3262 | |
623540e4 EJ |
3263 | ds_destroy(&ds); |
3264 | } | |
3265 | ||
6728d578 JG |
3266 | err = dp->upcall_cb(packet_, flow, ufid, pmd->core_id, type, userdata, |
3267 | actions, wc, put_actions, dp->upcall_aux); | |
3268 | if (err && err != ENOSPC) { | |
3269 | return err; | |
3270 | } | |
3271 | ||
3272 | /* Translate tunnel metadata masks to datapath format. */ | |
3273 | if (wc) { | |
3274 | if (wc->masks.tunnel.metadata.present.map) { | |
4e548ad9 | 3275 | struct geneve_opt opts[TLV_TOT_OPT_SIZE / |
6728d578 JG |
3276 | sizeof(struct geneve_opt)]; |
3277 | ||
3f32cfeb JG |
3278 | if (orig_tunnel.flags & FLOW_TNL_F_UDPIF) { |
3279 | tun_metadata_to_geneve_udpif_mask(&flow->tunnel, | |
3280 | &wc->masks.tunnel, | |
3281 | orig_tunnel.metadata.opts.gnv, | |
3282 | orig_tunnel.metadata.present.len, | |
3283 | opts); | |
3284 | } else { | |
3285 | orig_tunnel.metadata.present.len = 0; | |
3286 | } | |
6728d578 JG |
3287 | |
3288 | memset(&wc->masks.tunnel.metadata, 0, | |
3289 | sizeof wc->masks.tunnel.metadata); | |
3290 | memcpy(&wc->masks.tunnel.metadata.opts.gnv, opts, | |
3291 | orig_tunnel.metadata.present.len); | |
3292 | } | |
3293 | wc->masks.tunnel.metadata.present.len = 0xff; | |
3294 | } | |
3295 | ||
3296 | /* Restore tunnel metadata. We need to use the saved options to ensure | |
3297 | * that any unknown options are not lost. The generated mask will have | |
3298 | * the same structure, matching on types and lengths but wildcarding | |
3299 | * option data we don't care about. */ | |
3300 | if (orig_tunnel.flags & FLOW_TNL_F_UDPIF) { | |
3301 | memcpy(&flow->tunnel.metadata.opts.gnv, orig_tunnel.metadata.opts.gnv, | |
3302 | orig_tunnel.metadata.present.len); | |
3303 | flow->tunnel.metadata.present.len = orig_tunnel.metadata.present.len; | |
3304 | flow->tunnel.flags |= FLOW_TNL_F_UDPIF; | |
3305 | } | |
3306 | ||
3307 | return err; | |
623540e4 EJ |
3308 | } |
3309 | ||
9bbf1c3d | 3310 | static inline uint32_t |
048963aa DDP |
3311 | dpif_netdev_packet_get_rss_hash(struct dp_packet *packet, |
3312 | const struct miniflow *mf) | |
9bbf1c3d | 3313 | { |
048963aa | 3314 | uint32_t hash, recirc_depth; |
9bbf1c3d | 3315 | |
f2f44f5d DDP |
3316 | if (OVS_LIKELY(dp_packet_rss_valid(packet))) { |
3317 | hash = dp_packet_get_rss_hash(packet); | |
3318 | } else { | |
9bbf1c3d | 3319 | hash = miniflow_hash_5tuple(mf, 0); |
2bc1bbd2 | 3320 | dp_packet_set_rss_hash(packet, hash); |
9bbf1c3d | 3321 | } |
048963aa DDP |
3322 | |
3323 | /* The RSS hash must account for the recirculation depth to avoid | |
3324 | * collisions in the exact match cache */ | |
3325 | recirc_depth = *recirc_depth_get_unsafe(); | |
3326 | if (OVS_UNLIKELY(recirc_depth)) { | |
3327 | hash = hash_finish(hash, recirc_depth); | |
3328 | dp_packet_set_rss_hash(packet, hash); | |
3329 | } | |
9bbf1c3d DDP |
3330 | return hash; |
3331 | } | |
3332 | ||
f7ce4811 | 3333 | struct packet_batch_per_flow { |
8cbf4f47 DDP |
3334 | unsigned int byte_count; |
3335 | uint16_t tcp_flags; | |
8cbf4f47 DDP |
3336 | struct dp_netdev_flow *flow; |
3337 | ||
1895cc8d | 3338 | struct dp_packet_batch array; |
8cbf4f47 DDP |
3339 | }; |
3340 | ||
3341 | static inline void | |
f7ce4811 PS |
3342 | packet_batch_per_flow_update(struct packet_batch_per_flow *batch, |
3343 | struct dp_packet *packet, | |
3344 | const struct miniflow *mf) | |
8cbf4f47 | 3345 | { |
cf62fa4c | 3346 | batch->byte_count += dp_packet_size(packet); |
1895cc8d PS |
3347 | batch->tcp_flags |= miniflow_get_tcp_flags(mf); |
3348 | batch->array.packets[batch->array.count++] = packet; | |
8cbf4f47 DDP |
3349 | } |
3350 | ||
3351 | static inline void | |
f7ce4811 PS |
3352 | packet_batch_per_flow_init(struct packet_batch_per_flow *batch, |
3353 | struct dp_netdev_flow *flow) | |
8cbf4f47 | 3354 | { |
11e5cf1f | 3355 | flow->batch = batch; |
8cbf4f47 | 3356 | |
11e5cf1f | 3357 | batch->flow = flow; |
1895cc8d | 3358 | dp_packet_batch_init(&batch->array); |
8cbf4f47 DDP |
3359 | batch->byte_count = 0; |
3360 | batch->tcp_flags = 0; | |
8cbf4f47 DDP |
3361 | } |
3362 | ||
3363 | static inline void | |
f7ce4811 PS |
3364 | packet_batch_per_flow_execute(struct packet_batch_per_flow *batch, |
3365 | struct dp_netdev_pmd_thread *pmd, | |
3366 | long long now) | |
8cbf4f47 DDP |
3367 | { |
3368 | struct dp_netdev_actions *actions; | |
3369 | struct dp_netdev_flow *flow = batch->flow; | |
3370 | ||
1895cc8d | 3371 | dp_netdev_flow_used(flow, batch->array.count, batch->byte_count, |
11bfdadd | 3372 | batch->tcp_flags, now); |
8cbf4f47 DDP |
3373 | |
3374 | actions = dp_netdev_flow_get_actions(flow); | |
3375 | ||
1895cc8d | 3376 | dp_netdev_execute_actions(pmd, &batch->array, true, |
41ccaa24 | 3377 | actions->actions, actions->size); |
8cbf4f47 DDP |
3378 | } |
3379 | ||
8aaa125d | 3380 | static inline void |
e14deea0 | 3381 | dp_netdev_queue_batches(struct dp_packet *pkt, |
9bbf1c3d | 3382 | struct dp_netdev_flow *flow, const struct miniflow *mf, |
f7ce4811 | 3383 | struct packet_batch_per_flow *batches, size_t *n_batches) |
9bbf1c3d | 3384 | { |
f7ce4811 | 3385 | struct packet_batch_per_flow *batch = flow->batch; |
11e5cf1f | 3386 | |
f9fe365b AZ |
3387 | if (OVS_UNLIKELY(!batch)) { |
3388 | batch = &batches[(*n_batches)++]; | |
f7ce4811 | 3389 | packet_batch_per_flow_init(batch, flow); |
9bbf1c3d DDP |
3390 | } |
3391 | ||
f7ce4811 | 3392 | packet_batch_per_flow_update(batch, pkt, mf); |
9bbf1c3d DDP |
3393 | } |
3394 | ||
9bbf1c3d | 3395 | /* Try to process all ('cnt') the 'packets' using only the exact match cache |
a90ed026 | 3396 | * 'pmd->flow_cache'. If a flow is not found for a packet 'packets[i]', the |
8aaa125d DDP |
3397 | * miniflow is copied into 'keys' and the packet pointer is moved at the |
3398 | * beginning of the 'packets' array. | |
9bbf1c3d DDP |
3399 | * |
3400 | * The function returns the number of packets that needs to be processed in the | |
3401 | * 'packets' array (they have been moved to the beginning of the vector). | |
a90ed026 DDP |
3402 | * |
3403 | * If 'md_is_valid' is false, the metadata in 'packets' is not valid and must be | |
3404 | * initialized by this function using 'port_no'. | |
9bbf1c3d DDP |
3405 | */ |
3406 | static inline size_t | |
1895cc8d PS |
3407 | emc_processing(struct dp_netdev_pmd_thread *pmd, struct dp_packet_batch *packets_, |
3408 | struct netdev_flow_key *keys, | |
f7ce4811 | 3409 | struct packet_batch_per_flow batches[], size_t *n_batches, |
a90ed026 | 3410 | bool md_is_valid, odp_port_t port_no) |
72865317 | 3411 | { |
65f13b50 | 3412 | struct emc_cache *flow_cache = &pmd->flow_cache; |
b89c678b | 3413 | struct netdev_flow_key *key = &keys[0]; |
3d88a620 | 3414 | size_t i, n_missed = 0, n_dropped = 0; |
1895cc8d PS |
3415 | struct dp_packet **packets = packets_->packets; |
3416 | int cnt = packets_->count; | |
8cbf4f47 | 3417 | |
84d6d5eb | 3418 | for (i = 0; i < cnt; i++) { |
9bbf1c3d | 3419 | struct dp_netdev_flow *flow; |
5a2fed48 | 3420 | struct dp_packet *packet = packets[i]; |
9bbf1c3d | 3421 | |
5a2fed48 AZ |
3422 | if (OVS_UNLIKELY(dp_packet_size(packet) < ETH_HEADER_LEN)) { |
3423 | dp_packet_delete(packet); | |
3d88a620 | 3424 | n_dropped++; |
84d6d5eb EJ |
3425 | continue; |
3426 | } | |
8cbf4f47 | 3427 | |
72a5e2b8 | 3428 | if (i != cnt - 1) { |
a90ed026 | 3429 | /* Prefetch next packet data and metadata. */ |
72a5e2b8 | 3430 | OVS_PREFETCH(dp_packet_data(packets[i+1])); |
a90ed026 | 3431 | pkt_metadata_prefetch_init(&packets[i+1]->md); |
72a5e2b8 DDP |
3432 | } |
3433 | ||
a90ed026 DDP |
3434 | if (!md_is_valid) { |
3435 | pkt_metadata_init(&packet->md, port_no); | |
3436 | } | |
5a2fed48 | 3437 | miniflow_extract(packet, &key->mf); |
d262ac2c | 3438 | key->len = 0; /* Not computed yet. */ |
5a2fed48 | 3439 | key->hash = dpif_netdev_packet_get_rss_hash(packet, &key->mf); |
9bbf1c3d | 3440 | |
d262ac2c | 3441 | flow = emc_lookup(flow_cache, key); |
8aaa125d | 3442 | if (OVS_LIKELY(flow)) { |
5a2fed48 | 3443 | dp_netdev_queue_batches(packet, flow, &key->mf, batches, |
8aaa125d DDP |
3444 | n_batches); |
3445 | } else { | |
d1aa0b94 AZ |
3446 | /* Exact match cache missed. Group missed packets together at |
3447 | * the beginning of the 'packets' array. */ | |
b89c678b | 3448 | packets[n_missed] = packet; |
400486f7 DDP |
3449 | /* 'key[n_missed]' contains the key of the current packet and it |
3450 | * must be returned to the caller. The next key should be extracted | |
3451 | * to 'keys[n_missed + 1]'. */ | |
3452 | key = &keys[++n_missed]; | |
9bbf1c3d DDP |
3453 | } |
3454 | } | |
3455 | ||
3d88a620 | 3456 | dp_netdev_count_packet(pmd, DP_STAT_EXACT_HIT, cnt - n_dropped - n_missed); |
4f150744 | 3457 | |
3d88a620 | 3458 | return n_missed; |
9bbf1c3d DDP |
3459 | } |
3460 | ||
3461 | static inline void | |
65f13b50 | 3462 | fast_path_processing(struct dp_netdev_pmd_thread *pmd, |
1895cc8d | 3463 | struct dp_packet_batch *packets_, |
8aaa125d | 3464 | struct netdev_flow_key *keys, |
f7ce4811 | 3465 | struct packet_batch_per_flow batches[], size_t *n_batches) |
9bbf1c3d | 3466 | { |
1895cc8d | 3467 | int cnt = packets_->count; |
1a0d5831 | 3468 | #if !defined(__CHECKER__) && !defined(_WIN32) |
9bbf1c3d DDP |
3469 | const size_t PKT_ARRAY_SIZE = cnt; |
3470 | #else | |
1a0d5831 | 3471 | /* Sparse or MSVC doesn't like variable length array. */ |
cd159f1a | 3472 | enum { PKT_ARRAY_SIZE = NETDEV_MAX_BURST }; |
9bbf1c3d | 3473 | #endif |
1895cc8d | 3474 | struct dp_packet **packets = packets_->packets; |
0de8783a | 3475 | struct dpcls_rule *rules[PKT_ARRAY_SIZE]; |
65f13b50 AW |
3476 | struct dp_netdev *dp = pmd->dp; |
3477 | struct emc_cache *flow_cache = &pmd->flow_cache; | |
1895cc8d | 3478 | struct dp_packet_batch b; |
8aaa125d | 3479 | int miss_cnt = 0, lost_cnt = 0; |
9bbf1c3d | 3480 | bool any_miss; |
8aaa125d | 3481 | size_t i; |
9bbf1c3d DDP |
3482 | |
3483 | for (i = 0; i < cnt; i++) { | |
0de8783a | 3484 | /* Key length is needed in all the cases, hash computed on demand. */ |
361d808d | 3485 | keys[i].len = netdev_flow_key_size(miniflow_n_values(&keys[i].mf)); |
9bbf1c3d | 3486 | } |
1c1e46ed | 3487 | any_miss = !dpcls_lookup(&pmd->cls, keys, rules, cnt); |
623540e4 EJ |
3488 | if (OVS_UNLIKELY(any_miss) && !fat_rwlock_tryrdlock(&dp->upcall_rwlock)) { |
3489 | uint64_t actions_stub[512 / 8], slow_stub[512 / 8]; | |
3490 | struct ofpbuf actions, put_actions; | |
7af12bd7 | 3491 | ovs_u128 ufid; |
623540e4 EJ |
3492 | |
3493 | ofpbuf_use_stub(&actions, actions_stub, sizeof actions_stub); | |
3494 | ofpbuf_use_stub(&put_actions, slow_stub, sizeof slow_stub); | |
3495 | ||
3496 | for (i = 0; i < cnt; i++) { | |
0de8783a | 3497 | struct dp_netdev_flow *netdev_flow; |
623540e4 | 3498 | struct ofpbuf *add_actions; |
0de8783a | 3499 | struct match match; |
623540e4 EJ |
3500 | int error; |
3501 | ||
0de8783a | 3502 | if (OVS_LIKELY(rules[i])) { |
623540e4 EJ |
3503 | continue; |
3504 | } | |
3505 | ||
3506 | /* It's possible that an earlier slow path execution installed | |
0de8783a | 3507 | * a rule covering this flow. In this case, it's a lot cheaper |
623540e4 | 3508 | * to catch it here than execute a miss. */ |
1c1e46ed | 3509 | netdev_flow = dp_netdev_pmd_lookup_flow(pmd, &keys[i]); |
623540e4 | 3510 | if (netdev_flow) { |
0de8783a | 3511 | rules[i] = &netdev_flow->cr; |
623540e4 EJ |
3512 | continue; |
3513 | } | |
3514 | ||
60fc3b7b DDP |
3515 | miss_cnt++; |
3516 | ||
4d8f90b1 | 3517 | match.tun_md.valid = false; |
0de8783a | 3518 | miniflow_expand(&keys[i].mf, &match.flow); |
623540e4 EJ |
3519 | |
3520 | ofpbuf_clear(&actions); | |
3521 | ofpbuf_clear(&put_actions); | |
3522 | ||
7af12bd7 | 3523 | dpif_flow_hash(dp->dpif, &match.flow, sizeof match.flow, &ufid); |
1c1e46ed | 3524 | error = dp_netdev_upcall(pmd, packets[i], &match.flow, &match.wc, |
7af12bd7 | 3525 | &ufid, DPIF_UC_MISS, NULL, &actions, |
0de8783a | 3526 | &put_actions); |
623540e4 | 3527 | if (OVS_UNLIKELY(error && error != ENOSPC)) { |
7ad20cbd | 3528 | dp_packet_delete(packets[i]); |
60fc3b7b | 3529 | lost_cnt++; |
623540e4 EJ |
3530 | continue; |
3531 | } | |
3532 | ||
449b8131 JR |
3533 | /* The Netlink encoding of datapath flow keys cannot express |
3534 | * wildcarding the presence of a VLAN tag. Instead, a missing VLAN | |
3535 | * tag is interpreted as exact match on the fact that there is no | |
3536 | * VLAN. Unless we refactor a lot of code that translates between | |
3537 | * Netlink and struct flow representations, we have to do the same | |
3538 | * here. */ | |
3539 | if (!match.wc.masks.vlan_tci) { | |
3540 | match.wc.masks.vlan_tci = htons(0xffff); | |
3541 | } | |
3542 | ||
623540e4 EJ |
3543 | /* We can't allow the packet batching in the next loop to execute |
3544 | * the actions. Otherwise, if there are any slow path actions, | |
3545 | * we'll send the packet up twice. */ | |
1895cc8d PS |
3546 | packet_batch_init_packet(&b, packets[i]); |
3547 | dp_netdev_execute_actions(pmd, &b, true, | |
6fd6ed71 | 3548 | actions.data, actions.size); |
623540e4 | 3549 | |
6fd6ed71 | 3550 | add_actions = put_actions.size ? &put_actions : &actions; |
0de8783a JR |
3551 | if (OVS_LIKELY(error != ENOSPC)) { |
3552 | /* XXX: There's a race window where a flow covering this packet | |
3553 | * could have already been installed since we last did the flow | |
3554 | * lookup before upcall. This could be solved by moving the | |
3555 | * mutex lock outside the loop, but that's an awful long time | |
3556 | * to be locking everyone out of making flow installs. If we | |
3557 | * move to a per-core classifier, it would be reasonable. */ | |
1c1e46ed AW |
3558 | ovs_mutex_lock(&pmd->flow_mutex); |
3559 | netdev_flow = dp_netdev_pmd_lookup_flow(pmd, &keys[i]); | |
0de8783a | 3560 | if (OVS_LIKELY(!netdev_flow)) { |
1c1e46ed | 3561 | netdev_flow = dp_netdev_flow_add(pmd, &match, &ufid, |
6fd6ed71 PS |
3562 | add_actions->data, |
3563 | add_actions->size); | |
0de8783a | 3564 | } |
1c1e46ed | 3565 | ovs_mutex_unlock(&pmd->flow_mutex); |
0de8783a | 3566 | |
0de8783a | 3567 | emc_insert(flow_cache, &keys[i], netdev_flow); |
623540e4 | 3568 | } |
623540e4 EJ |
3569 | } |
3570 | ||
3571 | ofpbuf_uninit(&actions); | |
3572 | ofpbuf_uninit(&put_actions); | |
3573 | fat_rwlock_unlock(&dp->upcall_rwlock); | |
60fc3b7b | 3574 | dp_netdev_count_packet(pmd, DP_STAT_LOST, lost_cnt); |
ac8c2081 | 3575 | } else if (OVS_UNLIKELY(any_miss)) { |
ac8c2081 | 3576 | for (i = 0; i < cnt; i++) { |
0de8783a | 3577 | if (OVS_UNLIKELY(!rules[i])) { |
e14deea0 | 3578 | dp_packet_delete(packets[i]); |
8aaa125d DDP |
3579 | lost_cnt++; |
3580 | miss_cnt++; | |
ac8c2081 DDP |
3581 | } |
3582 | } | |
623540e4 | 3583 | } |
84d6d5eb | 3584 | |
8cbf4f47 | 3585 | for (i = 0; i < cnt; i++) { |
e14deea0 | 3586 | struct dp_packet *packet = packets[i]; |
84d6d5eb | 3587 | struct dp_netdev_flow *flow; |
8cbf4f47 | 3588 | |
0de8783a | 3589 | if (OVS_UNLIKELY(!rules[i])) { |
84d6d5eb EJ |
3590 | continue; |
3591 | } | |
3592 | ||
84d6d5eb | 3593 | flow = dp_netdev_flow_cast(rules[i]); |
0de8783a | 3594 | |
0de8783a | 3595 | emc_insert(flow_cache, &keys[i], flow); |
8aaa125d | 3596 | dp_netdev_queue_batches(packet, flow, &keys[i].mf, batches, n_batches); |
8cbf4f47 DDP |
3597 | } |
3598 | ||
8aaa125d DDP |
3599 | dp_netdev_count_packet(pmd, DP_STAT_MASKED_HIT, cnt - miss_cnt); |
3600 | dp_netdev_count_packet(pmd, DP_STAT_MISS, miss_cnt); | |
3601 | dp_netdev_count_packet(pmd, DP_STAT_LOST, lost_cnt); | |
72865317 BP |
3602 | } |
3603 | ||
a90ed026 DDP |
3604 | /* Packets enter the datapath from a port (or from recirculation) here. |
3605 | * | |
3606 | * For performance reasons a caller may choose not to initialize the metadata | |
3607 | * in 'packets': in this case 'mdinit' is false and this function needs to | |
3608 | * initialize it using 'port_no'. If the metadata in 'packets' is already | |
3609 | * valid, 'md_is_valid' must be true and 'port_no' will be ignored. */ | |
adcf00ba | 3610 | static void |
a90ed026 | 3611 | dp_netdev_input__(struct dp_netdev_pmd_thread *pmd, |
1895cc8d | 3612 | struct dp_packet_batch *packets, |
a90ed026 | 3613 | bool md_is_valid, odp_port_t port_no) |
9bbf1c3d | 3614 | { |
1895cc8d | 3615 | int cnt = packets->count; |
1a0d5831 | 3616 | #if !defined(__CHECKER__) && !defined(_WIN32) |
9bbf1c3d DDP |
3617 | const size_t PKT_ARRAY_SIZE = cnt; |
3618 | #else | |
1a0d5831 | 3619 | /* Sparse or MSVC doesn't like variable length array. */ |
cd159f1a | 3620 | enum { PKT_ARRAY_SIZE = NETDEV_MAX_BURST }; |
9bbf1c3d DDP |
3621 | #endif |
3622 | struct netdev_flow_key keys[PKT_ARRAY_SIZE]; | |
f7ce4811 | 3623 | struct packet_batch_per_flow batches[PKT_ARRAY_SIZE]; |
11bfdadd | 3624 | long long now = time_msec(); |
8aaa125d | 3625 | size_t newcnt, n_batches, i; |
9bbf1c3d | 3626 | |
8aaa125d | 3627 | n_batches = 0; |
1895cc8d | 3628 | newcnt = emc_processing(pmd, packets, keys, batches, &n_batches, |
a90ed026 | 3629 | md_is_valid, port_no); |
9bbf1c3d | 3630 | if (OVS_UNLIKELY(newcnt)) { |
1895cc8d PS |
3631 | packets->count = newcnt; |
3632 | fast_path_processing(pmd, packets, keys, batches, &n_batches); | |
8aaa125d DDP |
3633 | } |
3634 | ||
603f2ce0 EJ |
3635 | for (i = 0; i < n_batches; i++) { |
3636 | batches[i].flow->batch = NULL; | |
3637 | } | |
3638 | ||
8aaa125d | 3639 | for (i = 0; i < n_batches; i++) { |
f7ce4811 | 3640 | packet_batch_per_flow_execute(&batches[i], pmd, now); |
9bbf1c3d DDP |
3641 | } |
3642 | } | |
3643 | ||
a90ed026 DDP |
3644 | static void |
3645 | dp_netdev_input(struct dp_netdev_pmd_thread *pmd, | |
1895cc8d | 3646 | struct dp_packet_batch *packets, |
a90ed026 DDP |
3647 | odp_port_t port_no) |
3648 | { | |
1895cc8d | 3649 | dp_netdev_input__(pmd, packets, false, port_no); |
a90ed026 DDP |
3650 | } |
3651 | ||
3652 | static void | |
3653 | dp_netdev_recirculate(struct dp_netdev_pmd_thread *pmd, | |
1895cc8d | 3654 | struct dp_packet_batch *packets) |
a90ed026 | 3655 | { |
1895cc8d | 3656 | dp_netdev_input__(pmd, packets, true, 0); |
a90ed026 DDP |
3657 | } |
3658 | ||
9080a111 | 3659 | struct dp_netdev_execute_aux { |
65f13b50 | 3660 | struct dp_netdev_pmd_thread *pmd; |
9080a111 JR |
3661 | }; |
3662 | ||
e4e74c3a AW |
3663 | static void |
3664 | dpif_netdev_register_dp_purge_cb(struct dpif *dpif, dp_purge_callback *cb, | |
3665 | void *aux) | |
3666 | { | |
3667 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
3668 | dp->dp_purge_aux = aux; | |
3669 | dp->dp_purge_cb = cb; | |
3670 | } | |
3671 | ||
6b31e073 | 3672 | static void |
623540e4 EJ |
3673 | dpif_netdev_register_upcall_cb(struct dpif *dpif, upcall_callback *cb, |
3674 | void *aux) | |
6b31e073 RW |
3675 | { |
3676 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
623540e4 | 3677 | dp->upcall_aux = aux; |
6b31e073 RW |
3678 | dp->upcall_cb = cb; |
3679 | } | |
3680 | ||
a36de779 PS |
3681 | static int |
3682 | push_tnl_action(const struct dp_netdev *dp, | |
1895cc8d PS |
3683 | const struct nlattr *attr, |
3684 | struct dp_packet_batch *batch) | |
a36de779 PS |
3685 | { |
3686 | struct dp_netdev_port *tun_port; | |
3687 | const struct ovs_action_push_tnl *data; | |
4c742796 | 3688 | int err; |
a36de779 PS |
3689 | |
3690 | data = nl_attr_get(attr); | |
3691 | ||
3692 | tun_port = dp_netdev_lookup_port(dp, u32_to_odp(data->tnl_port)); | |
3693 | if (!tun_port) { | |
4c742796 PS |
3694 | err = -EINVAL; |
3695 | goto error; | |
a36de779 | 3696 | } |
4c742796 PS |
3697 | err = netdev_push_header(tun_port->netdev, batch, data); |
3698 | if (!err) { | |
3699 | return 0; | |
3700 | } | |
3701 | error: | |
3702 | dp_packet_delete_batch(batch, true); | |
3703 | return err; | |
a36de779 PS |
3704 | } |
3705 | ||
3706 | static void | |
1895cc8d | 3707 | dp_execute_cb(void *aux_, struct dp_packet_batch *packets_, |
09f9da0b | 3708 | const struct nlattr *a, bool may_steal) |
8a4e3a85 | 3709 | OVS_NO_THREAD_SAFETY_ANALYSIS |
9080a111 JR |
3710 | { |
3711 | struct dp_netdev_execute_aux *aux = aux_; | |
623540e4 | 3712 | uint32_t *depth = recirc_depth_get(); |
28e2fa02 DDP |
3713 | struct dp_netdev_pmd_thread *pmd = aux->pmd; |
3714 | struct dp_netdev *dp = pmd->dp; | |
09f9da0b | 3715 | int type = nl_attr_type(a); |
8a4e3a85 | 3716 | struct dp_netdev_port *p; |
9080a111 | 3717 | |
09f9da0b JR |
3718 | switch ((enum ovs_action_attr)type) { |
3719 | case OVS_ACTION_ATTR_OUTPUT: | |
623540e4 | 3720 | p = dp_netdev_lookup_port(dp, u32_to_odp(nl_attr_get_u32(a))); |
26a5075b | 3721 | if (OVS_LIKELY(p)) { |
347ba9bb IM |
3722 | int tx_qid; |
3723 | ||
3724 | atomic_read_relaxed(&pmd->tx_qid, &tx_qid); | |
3725 | ||
1895cc8d | 3726 | netdev_send(p->netdev, tx_qid, packets_, may_steal); |
ac8c2081 | 3727 | return; |
8a4e3a85 | 3728 | } |
09f9da0b JR |
3729 | break; |
3730 | ||
a36de779 PS |
3731 | case OVS_ACTION_ATTR_TUNNEL_PUSH: |
3732 | if (*depth < MAX_RECIRC_DEPTH) { | |
1895cc8d | 3733 | struct dp_packet_batch tnl_pkt; |
a36de779 PS |
3734 | int err; |
3735 | ||
3736 | if (!may_steal) { | |
1895cc8d PS |
3737 | dp_packet_batch_clone(&tnl_pkt, packets_); |
3738 | packets_ = &tnl_pkt; | |
a36de779 PS |
3739 | } |
3740 | ||
1895cc8d | 3741 | err = push_tnl_action(dp, a, packets_); |
a36de779 PS |
3742 | if (!err) { |
3743 | (*depth)++; | |
1895cc8d | 3744 | dp_netdev_recirculate(pmd, packets_); |
a36de779 | 3745 | (*depth)--; |
a36de779 PS |
3746 | } |
3747 | return; | |
3748 | } | |
3749 | break; | |
3750 | ||
3751 | case OVS_ACTION_ATTR_TUNNEL_POP: | |
3752 | if (*depth < MAX_RECIRC_DEPTH) { | |
3753 | odp_port_t portno = u32_to_odp(nl_attr_get_u32(a)); | |
3754 | ||
3755 | p = dp_netdev_lookup_port(dp, portno); | |
3756 | if (p) { | |
1895cc8d | 3757 | struct dp_packet_batch tnl_pkt; |
9235b479 | 3758 | int i; |
a36de779 PS |
3759 | |
3760 | if (!may_steal) { | |
1895cc8d PS |
3761 | dp_packet_batch_clone(&tnl_pkt, packets_); |
3762 | packets_ = &tnl_pkt; | |
a36de779 PS |
3763 | } |
3764 | ||
9235b479 | 3765 | netdev_pop_header(p->netdev, packets_); |
1895cc8d | 3766 | if (!packets_->count) { |
1c8f98d9 PS |
3767 | return; |
3768 | } | |
9235b479 PS |
3769 | |
3770 | for (i = 0; i < packets_->count; i++) { | |
3771 | packets_->packets[i]->md.in_port.odp_port = portno; | |
a36de779 | 3772 | } |
9235b479 PS |
3773 | |
3774 | (*depth)++; | |
3775 | dp_netdev_recirculate(pmd, packets_); | |
3776 | (*depth)--; | |
a36de779 PS |
3777 | return; |
3778 | } | |
3779 | } | |
3780 | break; | |
3781 | ||
623540e4 EJ |
3782 | case OVS_ACTION_ATTR_USERSPACE: |
3783 | if (!fat_rwlock_tryrdlock(&dp->upcall_rwlock)) { | |
1895cc8d | 3784 | struct dp_packet **packets = packets_->packets; |
623540e4 EJ |
3785 | const struct nlattr *userdata; |
3786 | struct ofpbuf actions; | |
3787 | struct flow flow; | |
7af12bd7 | 3788 | ovs_u128 ufid; |
1c8f98d9 | 3789 | int i; |
4fc65926 | 3790 | |
623540e4 EJ |
3791 | userdata = nl_attr_find_nested(a, OVS_USERSPACE_ATTR_USERDATA); |
3792 | ofpbuf_init(&actions, 0); | |
8cbf4f47 | 3793 | |
1895cc8d | 3794 | for (i = 0; i < packets_->count; i++) { |
623540e4 | 3795 | int error; |
1895cc8d | 3796 | struct dp_packet_batch b; |
623540e4 EJ |
3797 | |
3798 | ofpbuf_clear(&actions); | |
3799 | ||
cf62fa4c | 3800 | flow_extract(packets[i], &flow); |
7af12bd7 | 3801 | dpif_flow_hash(dp->dpif, &flow, sizeof flow, &ufid); |
1c1e46ed | 3802 | error = dp_netdev_upcall(pmd, packets[i], &flow, NULL, &ufid, |
7af12bd7 | 3803 | DPIF_UC_ACTION, userdata,&actions, |
623540e4 EJ |
3804 | NULL); |
3805 | if (!error || error == ENOSPC) { | |
1895cc8d PS |
3806 | packet_batch_init_packet(&b, packets[i]); |
3807 | dp_netdev_execute_actions(pmd, &b, may_steal, | |
6fd6ed71 | 3808 | actions.data, actions.size); |
ac8c2081 | 3809 | } else if (may_steal) { |
e14deea0 | 3810 | dp_packet_delete(packets[i]); |
623540e4 | 3811 | } |
db73f716 | 3812 | } |
623540e4 EJ |
3813 | ofpbuf_uninit(&actions); |
3814 | fat_rwlock_unlock(&dp->upcall_rwlock); | |
6b31e073 | 3815 | |
ac8c2081 DDP |
3816 | return; |
3817 | } | |
09f9da0b | 3818 | break; |
572f732a | 3819 | |
adcf00ba AZ |
3820 | case OVS_ACTION_ATTR_RECIRC: |
3821 | if (*depth < MAX_RECIRC_DEPTH) { | |
1895cc8d | 3822 | struct dp_packet_batch recirc_pkts; |
1c8f98d9 | 3823 | int i; |
572f732a | 3824 | |
28e2fa02 | 3825 | if (!may_steal) { |
1895cc8d PS |
3826 | dp_packet_batch_clone(&recirc_pkts, packets_); |
3827 | packets_ = &recirc_pkts; | |
28e2fa02 | 3828 | } |
8cbf4f47 | 3829 | |
1895cc8d PS |
3830 | for (i = 0; i < packets_->count; i++) { |
3831 | packets_->packets[i]->md.recirc_id = nl_attr_get_u32(a); | |
8cbf4f47 | 3832 | } |
28e2fa02 DDP |
3833 | |
3834 | (*depth)++; | |
1895cc8d | 3835 | dp_netdev_recirculate(pmd, packets_); |
adcf00ba AZ |
3836 | (*depth)--; |
3837 | ||
ac8c2081 | 3838 | return; |
adcf00ba | 3839 | } |
ac8c2081 DDP |
3840 | |
3841 | VLOG_WARN("Packet dropped. Max recirculation depth exceeded."); | |
572f732a | 3842 | break; |
572f732a | 3843 | |
07659514 JS |
3844 | case OVS_ACTION_ATTR_CT: |
3845 | /* If a flow with this action is slow-pathed, datapath assistance is | |
3846 | * required to implement it. However, we don't support this action | |
3847 | * in the userspace datapath. */ | |
3848 | VLOG_WARN("Cannot execute conntrack action in userspace."); | |
3849 | break; | |
3850 | ||
09f9da0b JR |
3851 | case OVS_ACTION_ATTR_PUSH_VLAN: |
3852 | case OVS_ACTION_ATTR_POP_VLAN: | |
3853 | case OVS_ACTION_ATTR_PUSH_MPLS: | |
3854 | case OVS_ACTION_ATTR_POP_MPLS: | |
3855 | case OVS_ACTION_ATTR_SET: | |
6d670e7f | 3856 | case OVS_ACTION_ATTR_SET_MASKED: |
09f9da0b | 3857 | case OVS_ACTION_ATTR_SAMPLE: |
53e1d6f1 | 3858 | case OVS_ACTION_ATTR_HASH: |
09f9da0b JR |
3859 | case OVS_ACTION_ATTR_UNSPEC: |
3860 | case __OVS_ACTION_ATTR_MAX: | |
3861 | OVS_NOT_REACHED(); | |
da546e07 | 3862 | } |
ac8c2081 | 3863 | |
1895cc8d | 3864 | dp_packet_delete_batch(packets_, may_steal); |
98403001 BP |
3865 | } |
3866 | ||
4edb9ae9 | 3867 | static void |
65f13b50 | 3868 | dp_netdev_execute_actions(struct dp_netdev_pmd_thread *pmd, |
1895cc8d | 3869 | struct dp_packet_batch *packets, |
41ccaa24 | 3870 | bool may_steal, |
9080a111 | 3871 | const struct nlattr *actions, size_t actions_len) |
72865317 | 3872 | { |
41ccaa24 | 3873 | struct dp_netdev_execute_aux aux = { pmd }; |
9080a111 | 3874 | |
1895cc8d | 3875 | odp_execute_actions(&aux, packets, may_steal, actions, |
8cbf4f47 | 3876 | actions_len, dp_execute_cb); |
72865317 BP |
3877 | } |
3878 | ||
3879 | const struct dpif_class dpif_netdev_class = { | |
72865317 | 3880 | "netdev", |
6553d06b | 3881 | dpif_netdev_init, |
2197d7ab | 3882 | dpif_netdev_enumerate, |
0aeaabc8 | 3883 | dpif_netdev_port_open_type, |
72865317 BP |
3884 | dpif_netdev_open, |
3885 | dpif_netdev_close, | |
7dab847a | 3886 | dpif_netdev_destroy, |
e4cfed38 PS |
3887 | dpif_netdev_run, |
3888 | dpif_netdev_wait, | |
72865317 | 3889 | dpif_netdev_get_stats, |
72865317 BP |
3890 | dpif_netdev_port_add, |
3891 | dpif_netdev_port_del, | |
3892 | dpif_netdev_port_query_by_number, | |
3893 | dpif_netdev_port_query_by_name, | |
98403001 | 3894 | NULL, /* port_get_pid */ |
b0ec0f27 BP |
3895 | dpif_netdev_port_dump_start, |
3896 | dpif_netdev_port_dump_next, | |
3897 | dpif_netdev_port_dump_done, | |
72865317 BP |
3898 | dpif_netdev_port_poll, |
3899 | dpif_netdev_port_poll_wait, | |
72865317 | 3900 | dpif_netdev_flow_flush, |
ac64794a BP |
3901 | dpif_netdev_flow_dump_create, |
3902 | dpif_netdev_flow_dump_destroy, | |
3903 | dpif_netdev_flow_dump_thread_create, | |
3904 | dpif_netdev_flow_dump_thread_destroy, | |
704a1e09 | 3905 | dpif_netdev_flow_dump_next, |
1a0c894a | 3906 | dpif_netdev_operate, |
6b31e073 RW |
3907 | NULL, /* recv_set */ |
3908 | NULL, /* handlers_set */ | |
f2eee189 | 3909 | dpif_netdev_pmd_set, |
5bf93d67 | 3910 | dpif_netdev_queue_to_priority, |
6b31e073 RW |
3911 | NULL, /* recv */ |
3912 | NULL, /* recv_wait */ | |
3913 | NULL, /* recv_purge */ | |
e4e74c3a | 3914 | dpif_netdev_register_dp_purge_cb, |
6b31e073 RW |
3915 | dpif_netdev_register_upcall_cb, |
3916 | dpif_netdev_enable_upcall, | |
3917 | dpif_netdev_disable_upcall, | |
b5cbbcf6 | 3918 | dpif_netdev_get_datapath_version, |
b77d9629 DDP |
3919 | NULL, /* ct_dump_start */ |
3920 | NULL, /* ct_dump_next */ | |
3921 | NULL, /* ct_dump_done */ | |
a0f7b6d5 | 3922 | NULL, /* ct_flush */ |
72865317 | 3923 | }; |
614c4892 | 3924 | |
74cc3969 BP |
3925 | static void |
3926 | dpif_dummy_change_port_number(struct unixctl_conn *conn, int argc OVS_UNUSED, | |
3927 | const char *argv[], void *aux OVS_UNUSED) | |
3928 | { | |
59e6d833 BP |
3929 | struct dp_netdev_port *old_port; |
3930 | struct dp_netdev_port *new_port; | |
74cc3969 | 3931 | struct dp_netdev *dp; |
ff073a71 | 3932 | odp_port_t port_no; |
74cc3969 | 3933 | |
8a4e3a85 | 3934 | ovs_mutex_lock(&dp_netdev_mutex); |
74cc3969 BP |
3935 | dp = shash_find_data(&dp_netdevs, argv[1]); |
3936 | if (!dp || !dpif_netdev_class_is_dummy(dp->class)) { | |
8a4e3a85 | 3937 | ovs_mutex_unlock(&dp_netdev_mutex); |
74cc3969 BP |
3938 | unixctl_command_reply_error(conn, "unknown datapath or not a dummy"); |
3939 | return; | |
3940 | } | |
8a4e3a85 BP |
3941 | ovs_refcount_ref(&dp->ref_cnt); |
3942 | ovs_mutex_unlock(&dp_netdev_mutex); | |
74cc3969 | 3943 | |
59e6d833 BP |
3944 | ovs_mutex_lock(&dp->port_mutex); |
3945 | if (get_port_by_name(dp, argv[2], &old_port)) { | |
74cc3969 | 3946 | unixctl_command_reply_error(conn, "unknown port"); |
8a4e3a85 | 3947 | goto exit; |
74cc3969 BP |
3948 | } |
3949 | ||
ff073a71 BP |
3950 | port_no = u32_to_odp(atoi(argv[3])); |
3951 | if (!port_no || port_no == ODPP_NONE) { | |
74cc3969 | 3952 | unixctl_command_reply_error(conn, "bad port number"); |
8a4e3a85 | 3953 | goto exit; |
74cc3969 | 3954 | } |
ff073a71 | 3955 | if (dp_netdev_lookup_port(dp, port_no)) { |
74cc3969 | 3956 | unixctl_command_reply_error(conn, "port number already in use"); |
8a4e3a85 | 3957 | goto exit; |
74cc3969 | 3958 | } |
59e6d833 BP |
3959 | |
3960 | /* Remove old port. */ | |
35303d71 | 3961 | cmap_remove(&dp->ports, &old_port->node, hash_port_no(old_port->port_no)); |
59e6d833 BP |
3962 | ovsrcu_postpone(free, old_port); |
3963 | ||
3964 | /* Insert new port (cmap semantics mean we cannot re-insert 'old_port'). */ | |
3965 | new_port = xmemdup(old_port, sizeof *old_port); | |
35303d71 | 3966 | new_port->port_no = port_no; |
59e6d833 BP |
3967 | cmap_insert(&dp->ports, &new_port->node, hash_port_no(port_no)); |
3968 | ||
d33ed218 | 3969 | seq_change(dp->port_seq); |
74cc3969 | 3970 | unixctl_command_reply(conn, NULL); |
8a4e3a85 BP |
3971 | |
3972 | exit: | |
59e6d833 | 3973 | ovs_mutex_unlock(&dp->port_mutex); |
8a4e3a85 | 3974 | dp_netdev_unref(dp); |
74cc3969 BP |
3975 | } |
3976 | ||
0cbfe35d BP |
3977 | static void |
3978 | dpif_dummy_register__(const char *type) | |
3979 | { | |
3980 | struct dpif_class *class; | |
3981 | ||
3982 | class = xmalloc(sizeof *class); | |
3983 | *class = dpif_netdev_class; | |
3984 | class->type = xstrdup(type); | |
3985 | dp_register_provider(class); | |
3986 | } | |
3987 | ||
8420c7ad BP |
3988 | static void |
3989 | dpif_dummy_override(const char *type) | |
3990 | { | |
65d43fdc YT |
3991 | int error; |
3992 | ||
3993 | /* | |
3994 | * Ignore EAFNOSUPPORT to allow --enable-dummy=system with | |
3995 | * a userland-only build. It's useful for testsuite. | |
3996 | */ | |
3997 | error = dp_unregister_provider(type); | |
3998 | if (error == 0 || error == EAFNOSUPPORT) { | |
8420c7ad BP |
3999 | dpif_dummy_register__(type); |
4000 | } | |
4001 | } | |
4002 | ||
614c4892 | 4003 | void |
8420c7ad | 4004 | dpif_dummy_register(enum dummy_level level) |
614c4892 | 4005 | { |
8420c7ad | 4006 | if (level == DUMMY_OVERRIDE_ALL) { |
0cbfe35d BP |
4007 | struct sset types; |
4008 | const char *type; | |
4009 | ||
4010 | sset_init(&types); | |
4011 | dp_enumerate_types(&types); | |
4012 | SSET_FOR_EACH (type, &types) { | |
8420c7ad | 4013 | dpif_dummy_override(type); |
0cbfe35d BP |
4014 | } |
4015 | sset_destroy(&types); | |
8420c7ad BP |
4016 | } else if (level == DUMMY_OVERRIDE_SYSTEM) { |
4017 | dpif_dummy_override("system"); | |
614c4892 | 4018 | } |
0cbfe35d BP |
4019 | |
4020 | dpif_dummy_register__("dummy"); | |
74cc3969 BP |
4021 | |
4022 | unixctl_command_register("dpif-dummy/change-port-number", | |
74467d5c | 4023 | "dp port new-number", |
74cc3969 | 4024 | 3, 3, dpif_dummy_change_port_number, NULL); |
614c4892 | 4025 | } |
0de8783a JR |
4026 | \f |
4027 | /* Datapath Classifier. */ | |
4028 | ||
4029 | /* A set of rules that all have the same fields wildcarded. */ | |
4030 | struct dpcls_subtable { | |
4031 | /* The fields are only used by writers. */ | |
4032 | struct cmap_node cmap_node OVS_GUARDED; /* Within dpcls 'subtables_map'. */ | |
4033 | ||
4034 | /* These fields are accessed by readers. */ | |
4035 | struct cmap rules; /* Contains "struct dpcls_rule"s. */ | |
4036 | struct netdev_flow_key mask; /* Wildcards for fields (const). */ | |
4037 | /* 'mask' must be the last field, additional space is allocated here. */ | |
4038 | }; | |
4039 | ||
4040 | /* Initializes 'cls' as a classifier that initially contains no classification | |
4041 | * rules. */ | |
4042 | static void | |
4043 | dpcls_init(struct dpcls *cls) | |
4044 | { | |
4045 | cmap_init(&cls->subtables_map); | |
4046 | pvector_init(&cls->subtables); | |
4047 | } | |
4048 | ||
4049 | static void | |
4050 | dpcls_destroy_subtable(struct dpcls *cls, struct dpcls_subtable *subtable) | |
4051 | { | |
4052 | pvector_remove(&cls->subtables, subtable); | |
4053 | cmap_remove(&cls->subtables_map, &subtable->cmap_node, | |
4054 | subtable->mask.hash); | |
4055 | cmap_destroy(&subtable->rules); | |
4056 | ovsrcu_postpone(free, subtable); | |
4057 | } | |
4058 | ||
4059 | /* Destroys 'cls'. Rules within 'cls', if any, are not freed; this is the | |
4060 | * caller's responsibility. | |
4061 | * May only be called after all the readers have been terminated. */ | |
4062 | static void | |
4063 | dpcls_destroy(struct dpcls *cls) | |
4064 | { | |
4065 | if (cls) { | |
4066 | struct dpcls_subtable *subtable; | |
4067 | ||
4068 | CMAP_FOR_EACH (subtable, cmap_node, &cls->subtables_map) { | |
361d808d | 4069 | ovs_assert(cmap_count(&subtable->rules) == 0); |
0de8783a JR |
4070 | dpcls_destroy_subtable(cls, subtable); |
4071 | } | |
4072 | cmap_destroy(&cls->subtables_map); | |
4073 | pvector_destroy(&cls->subtables); | |
4074 | } | |
4075 | } | |
4076 | ||
4077 | static struct dpcls_subtable * | |
4078 | dpcls_create_subtable(struct dpcls *cls, const struct netdev_flow_key *mask) | |
4079 | { | |
4080 | struct dpcls_subtable *subtable; | |
4081 | ||
4082 | /* Need to add one. */ | |
caeb4906 JR |
4083 | subtable = xmalloc(sizeof *subtable |
4084 | - sizeof subtable->mask.mf + mask->len); | |
0de8783a JR |
4085 | cmap_init(&subtable->rules); |
4086 | netdev_flow_key_clone(&subtable->mask, mask); | |
4087 | cmap_insert(&cls->subtables_map, &subtable->cmap_node, mask->hash); | |
4088 | pvector_insert(&cls->subtables, subtable, 0); | |
802f84ff | 4089 | pvector_publish(&cls->subtables); |
0de8783a JR |
4090 | |
4091 | return subtable; | |
4092 | } | |
4093 | ||
4094 | static inline struct dpcls_subtable * | |
4095 | dpcls_find_subtable(struct dpcls *cls, const struct netdev_flow_key *mask) | |
4096 | { | |
4097 | struct dpcls_subtable *subtable; | |
4098 | ||
4099 | CMAP_FOR_EACH_WITH_HASH (subtable, cmap_node, mask->hash, | |
4100 | &cls->subtables_map) { | |
4101 | if (netdev_flow_key_equal(&subtable->mask, mask)) { | |
4102 | return subtable; | |
4103 | } | |
4104 | } | |
4105 | return dpcls_create_subtable(cls, mask); | |
4106 | } | |
4107 | ||
4108 | /* Insert 'rule' into 'cls'. */ | |
4109 | static void | |
4110 | dpcls_insert(struct dpcls *cls, struct dpcls_rule *rule, | |
4111 | const struct netdev_flow_key *mask) | |
4112 | { | |
4113 | struct dpcls_subtable *subtable = dpcls_find_subtable(cls, mask); | |
4114 | ||
4115 | rule->mask = &subtable->mask; | |
4116 | cmap_insert(&subtable->rules, &rule->cmap_node, rule->flow.hash); | |
4117 | } | |
4118 | ||
4119 | /* Removes 'rule' from 'cls', also destructing the 'rule'. */ | |
4120 | static void | |
4121 | dpcls_remove(struct dpcls *cls, struct dpcls_rule *rule) | |
4122 | { | |
4123 | struct dpcls_subtable *subtable; | |
4124 | ||
4125 | ovs_assert(rule->mask); | |
4126 | ||
4127 | INIT_CONTAINER(subtable, rule->mask, mask); | |
4128 | ||
4129 | if (cmap_remove(&subtable->rules, &rule->cmap_node, rule->flow.hash) | |
4130 | == 0) { | |
4131 | dpcls_destroy_subtable(cls, subtable); | |
802f84ff | 4132 | pvector_publish(&cls->subtables); |
0de8783a JR |
4133 | } |
4134 | } | |
4135 | ||
361d808d JR |
4136 | /* Returns true if 'target' satisfies 'key' in 'mask', that is, if each 1-bit |
4137 | * in 'mask' the values in 'key' and 'target' are the same. */ | |
0de8783a JR |
4138 | static inline bool |
4139 | dpcls_rule_matches_key(const struct dpcls_rule *rule, | |
4140 | const struct netdev_flow_key *target) | |
4141 | { | |
09b0fa9c JR |
4142 | const uint64_t *keyp = miniflow_get_values(&rule->flow.mf); |
4143 | const uint64_t *maskp = miniflow_get_values(&rule->mask->mf); | |
5fcff47b | 4144 | uint64_t value; |
0de8783a | 4145 | |
5fcff47b JR |
4146 | NETDEV_FLOW_KEY_FOR_EACH_IN_FLOWMAP(value, target, rule->flow.mf.map) { |
4147 | if (OVS_UNLIKELY((value & *maskp++) != *keyp++)) { | |
0de8783a JR |
4148 | return false; |
4149 | } | |
4150 | } | |
4151 | return true; | |
4152 | } | |
4153 | ||
4154 | /* For each miniflow in 'flows' performs a classifier lookup writing the result | |
4155 | * into the corresponding slot in 'rules'. If a particular entry in 'flows' is | |
4156 | * NULL it is skipped. | |
4157 | * | |
4158 | * This function is optimized for use in the userspace datapath and therefore | |
4159 | * does not implement a lot of features available in the standard | |
4160 | * classifier_lookup() function. Specifically, it does not implement | |
4161 | * priorities, instead returning any rule which matches the flow. | |
4162 | * | |
4163 | * Returns true if all flows found a corresponding rule. */ | |
4164 | static bool | |
4165 | dpcls_lookup(const struct dpcls *cls, const struct netdev_flow_key keys[], | |
4166 | struct dpcls_rule **rules, const size_t cnt) | |
4167 | { | |
4168 | /* The batch size 16 was experimentally found faster than 8 or 32. */ | |
4169 | typedef uint16_t map_type; | |
4170 | #define MAP_BITS (sizeof(map_type) * CHAR_BIT) | |
4171 | ||
4172 | #if !defined(__CHECKER__) && !defined(_WIN32) | |
4173 | const int N_MAPS = DIV_ROUND_UP(cnt, MAP_BITS); | |
4174 | #else | |
cd159f1a | 4175 | enum { N_MAPS = DIV_ROUND_UP(NETDEV_MAX_BURST, MAP_BITS) }; |
0de8783a JR |
4176 | #endif |
4177 | map_type maps[N_MAPS]; | |
4178 | struct dpcls_subtable *subtable; | |
4179 | ||
4180 | memset(maps, 0xff, sizeof maps); | |
4181 | if (cnt % MAP_BITS) { | |
4182 | maps[N_MAPS - 1] >>= MAP_BITS - cnt % MAP_BITS; /* Clear extra bits. */ | |
4183 | } | |
4184 | memset(rules, 0, cnt * sizeof *rules); | |
4185 | ||
4186 | PVECTOR_FOR_EACH (subtable, &cls->subtables) { | |
4187 | const struct netdev_flow_key *mkeys = keys; | |
4188 | struct dpcls_rule **mrules = rules; | |
4189 | map_type remains = 0; | |
4190 | int m; | |
4191 | ||
4192 | BUILD_ASSERT_DECL(sizeof remains == sizeof *maps); | |
4193 | ||
4194 | for (m = 0; m < N_MAPS; m++, mkeys += MAP_BITS, mrules += MAP_BITS) { | |
4195 | uint32_t hashes[MAP_BITS]; | |
4196 | const struct cmap_node *nodes[MAP_BITS]; | |
4197 | unsigned long map = maps[m]; | |
4198 | int i; | |
4199 | ||
4200 | if (!map) { | |
4201 | continue; /* Skip empty maps. */ | |
4202 | } | |
4203 | ||
4204 | /* Compute hashes for the remaining keys. */ | |
3ee6026a | 4205 | ULLONG_FOR_EACH_1(i, map) { |
0de8783a JR |
4206 | hashes[i] = netdev_flow_key_hash_in_mask(&mkeys[i], |
4207 | &subtable->mask); | |
4208 | } | |
4209 | /* Lookup. */ | |
4210 | map = cmap_find_batch(&subtable->rules, map, hashes, nodes); | |
4211 | /* Check results. */ | |
3ee6026a | 4212 | ULLONG_FOR_EACH_1(i, map) { |
0de8783a JR |
4213 | struct dpcls_rule *rule; |
4214 | ||
4215 | CMAP_NODE_FOR_EACH (rule, cmap_node, nodes[i]) { | |
4216 | if (OVS_LIKELY(dpcls_rule_matches_key(rule, &mkeys[i]))) { | |
4217 | mrules[i] = rule; | |
4218 | goto next; | |
4219 | } | |
4220 | } | |
3ee6026a | 4221 | ULLONG_SET0(map, i); /* Did not match. */ |
0de8783a JR |
4222 | next: |
4223 | ; /* Keep Sparse happy. */ | |
4224 | } | |
4225 | maps[m] &= ~map; /* Clear the found rules. */ | |
4226 | remains |= maps[m]; | |
4227 | } | |
4228 | if (!remains) { | |
4229 | return true; /* All found. */ | |
4230 | } | |
4231 | } | |
4232 | return false; /* Some misses. */ | |
4233 | } |