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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" |
5cf3edb3 | 36 | #include "conntrack.h" |
7daedce4 | 37 | #include "coverage.h" |
4d4e68ed | 38 | #include "ct-dpif.h" |
72865317 | 39 | #include "csum.h" |
e14deea0 | 40 | #include "dp-packet.h" |
614c4892 | 41 | #include "dpif.h" |
72865317 | 42 | #include "dpif-provider.h" |
614c4892 | 43 | #include "dummy.h" |
afae68b1 | 44 | #include "fat-rwlock.h" |
72865317 | 45 | #include "flow.h" |
762d146a | 46 | #include "hmapx.h" |
6c3eee82 | 47 | #include "latch.h" |
72865317 | 48 | #include "netdev.h" |
8617afff | 49 | #include "netdev-dpdk.h" |
de281153 | 50 | #include "netdev-vport.h" |
cdee00fd | 51 | #include "netlink.h" |
f094af7b | 52 | #include "odp-execute.h" |
72865317 | 53 | #include "odp-util.h" |
25d436fb BW |
54 | #include "openvswitch/dynamic-string.h" |
55 | #include "openvswitch/list.h" | |
56 | #include "openvswitch/match.h" | |
57 | #include "openvswitch/ofp-print.h" | |
3eb67853 | 58 | #include "openvswitch/ofp-util.h" |
64c96779 | 59 | #include "openvswitch/ofpbuf.h" |
3eb67853 | 60 | #include "openvswitch/shash.h" |
25d436fb | 61 | #include "openvswitch/vlog.h" |
5a034064 | 62 | #include "ovs-numa.h" |
61e7deb1 | 63 | #include "ovs-rcu.h" |
72865317 BP |
64 | #include "packets.h" |
65 | #include "poll-loop.h" | |
0de8783a | 66 | #include "pvector.h" |
26c6b6cd | 67 | #include "random.h" |
d33ed218 | 68 | #include "seq.h" |
3eb67853 | 69 | #include "smap.h" |
0cbfe35d | 70 | #include "sset.h" |
72865317 | 71 | #include "timeval.h" |
53902038 | 72 | #include "tnl-neigh-cache.h" |
7f9b8504 | 73 | #include "tnl-ports.h" |
74cc3969 | 74 | #include "unixctl.h" |
72865317 | 75 | #include "util.h" |
7daedce4 | 76 | |
d98e6007 | 77 | VLOG_DEFINE_THIS_MODULE(dpif_netdev); |
72865317 | 78 | |
8bb113da | 79 | #define FLOW_DUMP_MAX_BATCH 50 |
adcf00ba AZ |
80 | /* Use per thread recirc_depth to prevent recirculation loop. */ |
81 | #define MAX_RECIRC_DEPTH 5 | |
82 | DEFINE_STATIC_PER_THREAD_DATA(uint32_t, recirc_depth, 0) | |
e4cfed38 | 83 | |
72865317 | 84 | /* Configuration parameters. */ |
72865317 BP |
85 | enum { MAX_FLOWS = 65536 }; /* Maximum number of flows in flow table. */ |
86 | ||
8a4e3a85 BP |
87 | /* Protects against changes to 'dp_netdevs'. */ |
88 | static struct ovs_mutex dp_netdev_mutex = OVS_MUTEX_INITIALIZER; | |
89 | ||
90 | /* Contains all 'struct dp_netdev's. */ | |
91 | static struct shash dp_netdevs OVS_GUARDED_BY(dp_netdev_mutex) | |
92 | = SHASH_INITIALIZER(&dp_netdevs); | |
93 | ||
623540e4 | 94 | static struct vlog_rate_limit upcall_rl = VLOG_RATE_LIMIT_INIT(600, 600); |
6b31e073 | 95 | |
5cf3edb3 DDP |
96 | #define DP_NETDEV_CS_SUPPORTED_MASK (CS_NEW | CS_ESTABLISHED | CS_RELATED \ |
97 | | CS_INVALID | CS_REPLY_DIR | CS_TRACKED) | |
98 | #define DP_NETDEV_CS_UNSUPPORTED_MASK (~(uint32_t)DP_NETDEV_CS_SUPPORTED_MASK) | |
99 | ||
2494ccd7 JS |
100 | static struct odp_support dp_netdev_support = { |
101 | .max_mpls_depth = SIZE_MAX, | |
102 | .recirc = true, | |
5cf3edb3 DDP |
103 | .ct_state = true, |
104 | .ct_zone = true, | |
105 | .ct_mark = true, | |
106 | .ct_label = true, | |
2494ccd7 JS |
107 | }; |
108 | ||
79df317f | 109 | /* Stores a miniflow with inline values */ |
9bbf1c3d | 110 | |
9bbf1c3d | 111 | struct netdev_flow_key { |
caeb4906 JR |
112 | uint32_t hash; /* Hash function differs for different users. */ |
113 | uint32_t len; /* Length of the following miniflow (incl. map). */ | |
0de8783a | 114 | struct miniflow mf; |
8fd47924 | 115 | uint64_t buf[FLOW_MAX_PACKET_U64S]; |
9bbf1c3d DDP |
116 | }; |
117 | ||
118 | /* Exact match cache for frequently used flows | |
119 | * | |
120 | * The cache uses a 32-bit hash of the packet (which can be the RSS hash) to | |
121 | * search its entries for a miniflow that matches exactly the miniflow of the | |
0de8783a | 122 | * packet. It stores the 'dpcls_rule' (rule) that matches the miniflow. |
9bbf1c3d DDP |
123 | * |
124 | * A cache entry holds a reference to its 'dp_netdev_flow'. | |
125 | * | |
126 | * A miniflow with a given hash can be in one of EM_FLOW_HASH_SEGS different | |
127 | * entries. The 32-bit hash is split into EM_FLOW_HASH_SEGS values (each of | |
128 | * them is EM_FLOW_HASH_SHIFT bits wide and the remainder is thrown away). Each | |
129 | * value is the index of a cache entry where the miniflow could be. | |
130 | * | |
131 | * | |
132 | * Thread-safety | |
133 | * ============= | |
134 | * | |
135 | * Each pmd_thread has its own private exact match cache. | |
136 | * If dp_netdev_input is not called from a pmd thread, a mutex is used. | |
137 | */ | |
138 | ||
fc82e877 | 139 | #define EM_FLOW_HASH_SHIFT 13 |
9bbf1c3d DDP |
140 | #define EM_FLOW_HASH_ENTRIES (1u << EM_FLOW_HASH_SHIFT) |
141 | #define EM_FLOW_HASH_MASK (EM_FLOW_HASH_ENTRIES - 1) | |
142 | #define EM_FLOW_HASH_SEGS 2 | |
143 | ||
144 | struct emc_entry { | |
9bbf1c3d | 145 | struct dp_netdev_flow *flow; |
0de8783a | 146 | struct netdev_flow_key key; /* key.hash used for emc hash value. */ |
9bbf1c3d DDP |
147 | }; |
148 | ||
149 | struct emc_cache { | |
150 | struct emc_entry entries[EM_FLOW_HASH_ENTRIES]; | |
67ad54cb | 151 | int sweep_idx; /* For emc_cache_slow_sweep(). */ |
9bbf1c3d DDP |
152 | }; |
153 | ||
154 | /* Iterate in the exact match cache through every entry that might contain a | |
155 | * miniflow with hash 'HASH'. */ | |
156 | #define EMC_FOR_EACH_POS_WITH_HASH(EMC, CURRENT_ENTRY, HASH) \ | |
157 | for (uint32_t i__ = 0, srch_hash__ = (HASH); \ | |
158 | (CURRENT_ENTRY) = &(EMC)->entries[srch_hash__ & EM_FLOW_HASH_MASK], \ | |
159 | i__ < EM_FLOW_HASH_SEGS; \ | |
160 | i__++, srch_hash__ >>= EM_FLOW_HASH_SHIFT) | |
0de8783a JR |
161 | \f |
162 | /* Simple non-wildcarding single-priority classifier. */ | |
163 | ||
3453b4d6 JS |
164 | /* Time in ms between successive optimizations of the dpcls subtable vector */ |
165 | #define DPCLS_OPTIMIZATION_INTERVAL 1000 | |
166 | ||
0de8783a | 167 | struct dpcls { |
3453b4d6 JS |
168 | struct cmap_node node; /* Within dp_netdev_pmd_thread.classifiers */ |
169 | odp_port_t in_port; | |
0de8783a | 170 | struct cmap subtables_map; |
da9cfca6 | 171 | struct pvector subtables; |
0de8783a | 172 | }; |
9bbf1c3d | 173 | |
0de8783a JR |
174 | /* A rule to be inserted to the classifier. */ |
175 | struct dpcls_rule { | |
176 | struct cmap_node cmap_node; /* Within struct dpcls_subtable 'rules'. */ | |
177 | struct netdev_flow_key *mask; /* Subtable's mask. */ | |
178 | struct netdev_flow_key flow; /* Matching key. */ | |
179 | /* 'flow' must be the last field, additional space is allocated here. */ | |
180 | }; | |
181 | ||
182 | static void dpcls_init(struct dpcls *); | |
183 | static void dpcls_destroy(struct dpcls *); | |
3453b4d6 | 184 | static void dpcls_sort_subtable_vector(struct dpcls *); |
0de8783a JR |
185 | static void dpcls_insert(struct dpcls *, struct dpcls_rule *, |
186 | const struct netdev_flow_key *mask); | |
187 | static void dpcls_remove(struct dpcls *, struct dpcls_rule *); | |
3453b4d6 | 188 | static bool dpcls_lookup(struct dpcls *cls, |
0de8783a | 189 | const struct netdev_flow_key keys[], |
3453b4d6 JS |
190 | struct dpcls_rule **rules, size_t cnt, |
191 | int *num_lookups_p); | |
0de8783a | 192 | \f |
8a4e3a85 BP |
193 | /* Datapath based on the network device interface from netdev.h. |
194 | * | |
195 | * | |
196 | * Thread-safety | |
197 | * ============= | |
198 | * | |
199 | * Some members, marked 'const', are immutable. Accessing other members | |
200 | * requires synchronization, as noted in more detail below. | |
201 | * | |
202 | * Acquisition order is, from outermost to innermost: | |
203 | * | |
204 | * dp_netdev_mutex (global) | |
59e6d833 | 205 | * port_mutex |
d0cca6c3 | 206 | * non_pmd_mutex |
8a4e3a85 | 207 | */ |
72865317 | 208 | struct dp_netdev { |
8a4e3a85 BP |
209 | const struct dpif_class *const class; |
210 | const char *const name; | |
6b31e073 | 211 | struct dpif *dpif; |
6a8267c5 BP |
212 | struct ovs_refcount ref_cnt; |
213 | atomic_flag destroyed; | |
72865317 | 214 | |
8a4e3a85 BP |
215 | /* Ports. |
216 | * | |
e9985d6a DDP |
217 | * Any lookup into 'ports' or any access to the dp_netdev_ports found |
218 | * through 'ports' requires taking 'port_mutex'. */ | |
59e6d833 | 219 | struct ovs_mutex port_mutex; |
e9985d6a | 220 | struct hmap ports; |
d33ed218 | 221 | struct seq *port_seq; /* Incremented whenever a port changes. */ |
6c3eee82 | 222 | |
6b31e073 RW |
223 | /* Protects access to ofproto-dpif-upcall interface during revalidator |
224 | * thread synchronization. */ | |
225 | struct fat_rwlock upcall_rwlock; | |
623540e4 EJ |
226 | upcall_callback *upcall_cb; /* Callback function for executing upcalls. */ |
227 | void *upcall_aux; | |
6b31e073 | 228 | |
e4e74c3a AW |
229 | /* Callback function for notifying the purging of dp flows (during |
230 | * reseting pmd deletion). */ | |
231 | dp_purge_callback *dp_purge_cb; | |
232 | void *dp_purge_aux; | |
233 | ||
65f13b50 AW |
234 | /* Stores all 'struct dp_netdev_pmd_thread's. */ |
235 | struct cmap poll_threads; | |
236 | ||
237 | /* Protects the access of the 'struct dp_netdev_pmd_thread' | |
238 | * instance for non-pmd thread. */ | |
239 | struct ovs_mutex non_pmd_mutex; | |
240 | ||
241 | /* Each pmd thread will store its pointer to | |
242 | * 'struct dp_netdev_pmd_thread' in 'per_pmd_key'. */ | |
243 | ovsthread_key_t per_pmd_key; | |
f2eee189 | 244 | |
a6a426d6 IM |
245 | struct seq *reconfigure_seq; |
246 | uint64_t last_reconfigure_seq; | |
247 | ||
a14b8947 | 248 | /* Cpu mask for pin of pmd threads. */ |
f2eee189 | 249 | char *pmd_cmask; |
6e3c6fa4 | 250 | |
a36de779 | 251 | uint64_t last_tnl_conf_seq; |
5cf3edb3 DDP |
252 | |
253 | struct conntrack conntrack; | |
72865317 BP |
254 | }; |
255 | ||
8a4e3a85 | 256 | static struct dp_netdev_port *dp_netdev_lookup_port(const struct dp_netdev *dp, |
e9985d6a DDP |
257 | odp_port_t) |
258 | OVS_REQUIRES(dp->port_mutex); | |
ff073a71 | 259 | |
51852a57 | 260 | enum dp_stat_type { |
abcf3ef4 DDP |
261 | DP_STAT_EXACT_HIT, /* Packets that had an exact match (emc). */ |
262 | DP_STAT_MASKED_HIT, /* Packets that matched in the flow table. */ | |
51852a57 BP |
263 | DP_STAT_MISS, /* Packets that did not match. */ |
264 | DP_STAT_LOST, /* Packets not passed up to the client. */ | |
3453b4d6 JS |
265 | DP_STAT_LOOKUP_HIT, /* Number of subtable lookups for flow table |
266 | hits */ | |
51852a57 BP |
267 | DP_N_STATS |
268 | }; | |
269 | ||
55e3ca97 DDP |
270 | enum pmd_cycles_counter_type { |
271 | PMD_CYCLES_POLLING, /* Cycles spent polling NICs. */ | |
272 | PMD_CYCLES_PROCESSING, /* Cycles spent processing packets */ | |
273 | PMD_N_CYCLES | |
274 | }; | |
275 | ||
324c8374 IM |
276 | #define XPS_TIMEOUT_MS 500LL |
277 | ||
3eb67853 IM |
278 | /* Contained by struct dp_netdev_port's 'rxqs' member. */ |
279 | struct dp_netdev_rxq { | |
280 | struct netdev_rxq *rxq; | |
281 | unsigned core_id; /* Сore to which this queue is pinned. */ | |
282 | }; | |
283 | ||
72865317 BP |
284 | /* A port in a netdev-based datapath. */ |
285 | struct dp_netdev_port { | |
35303d71 | 286 | odp_port_t port_no; |
72865317 | 287 | struct netdev *netdev; |
e9985d6a | 288 | struct hmap_node node; /* Node in dp_netdev's 'ports'. */ |
4b609110 | 289 | struct netdev_saved_flags *sf; |
490e82af | 290 | unsigned n_rxq; /* Number of elements in 'rxq' */ |
3eb67853 | 291 | struct dp_netdev_rxq *rxqs; |
324c8374 IM |
292 | bool dynamic_txqs; /* If true XPS will be used. */ |
293 | unsigned *txq_used; /* Number of threads that uses each tx queue. */ | |
294 | struct ovs_mutex txq_used_mutex; | |
0cbfe35d | 295 | char *type; /* Port type as requested by user. */ |
3eb67853 | 296 | char *rxq_affinity_list; /* Requested affinity of rx queues. */ |
72865317 BP |
297 | }; |
298 | ||
1c1e46ed AW |
299 | /* Contained by struct dp_netdev_flow's 'stats' member. */ |
300 | struct dp_netdev_flow_stats { | |
eb94da30 DDP |
301 | atomic_llong used; /* Last used time, in monotonic msecs. */ |
302 | atomic_ullong packet_count; /* Number of packets matched. */ | |
303 | atomic_ullong byte_count; /* Number of bytes matched. */ | |
304 | atomic_uint16_t tcp_flags; /* Bitwise-OR of seen tcp_flags values. */ | |
1c1e46ed AW |
305 | }; |
306 | ||
307 | /* A flow in 'dp_netdev_pmd_thread's 'flow_table'. | |
8a4e3a85 BP |
308 | * |
309 | * | |
310 | * Thread-safety | |
311 | * ============= | |
312 | * | |
313 | * Except near the beginning or ending of its lifespan, rule 'rule' belongs to | |
1c1e46ed | 314 | * its pmd thread's classifier. The text below calls this classifier 'cls'. |
8a4e3a85 BP |
315 | * |
316 | * Motivation | |
317 | * ---------- | |
318 | * | |
319 | * The thread safety rules described here for "struct dp_netdev_flow" are | |
320 | * motivated by two goals: | |
321 | * | |
322 | * - Prevent threads that read members of "struct dp_netdev_flow" from | |
323 | * reading bad data due to changes by some thread concurrently modifying | |
324 | * those members. | |
325 | * | |
326 | * - Prevent two threads making changes to members of a given "struct | |
327 | * dp_netdev_flow" from interfering with each other. | |
328 | * | |
329 | * | |
330 | * Rules | |
331 | * ----- | |
332 | * | |
ed79f89a DDP |
333 | * A flow 'flow' may be accessed without a risk of being freed during an RCU |
334 | * grace period. Code that needs to hold onto a flow for a while | |
335 | * should try incrementing 'flow->ref_cnt' with dp_netdev_flow_ref(). | |
8a4e3a85 BP |
336 | * |
337 | * 'flow->ref_cnt' protects 'flow' from being freed. It doesn't protect the | |
ed79f89a DDP |
338 | * flow from being deleted from 'cls' and it doesn't protect members of 'flow' |
339 | * from modification. | |
8a4e3a85 BP |
340 | * |
341 | * Some members, marked 'const', are immutable. Accessing other members | |
342 | * requires synchronization, as noted in more detail below. | |
343 | */ | |
72865317 | 344 | struct dp_netdev_flow { |
11e5cf1f | 345 | const struct flow flow; /* Unmasked flow that created this entry. */ |
8a4e3a85 | 346 | /* Hash table index by unmasked flow. */ |
1c1e46ed AW |
347 | const struct cmap_node node; /* In owning dp_netdev_pmd_thread's */ |
348 | /* 'flow_table'. */ | |
70e5ed6f | 349 | const ovs_u128 ufid; /* Unique flow identifier. */ |
bd5131ba | 350 | const unsigned pmd_id; /* The 'core_id' of pmd thread owning this */ |
1c1e46ed | 351 | /* flow. */ |
72865317 | 352 | |
ed79f89a DDP |
353 | /* Number of references. |
354 | * The classifier owns one reference. | |
355 | * Any thread trying to keep a rule from being freed should hold its own | |
356 | * reference. */ | |
357 | struct ovs_refcount ref_cnt; | |
358 | ||
11e5cf1f DDP |
359 | bool dead; |
360 | ||
1c1e46ed AW |
361 | /* Statistics. */ |
362 | struct dp_netdev_flow_stats stats; | |
8a4e3a85 | 363 | |
45c626a3 | 364 | /* Actions. */ |
61e7deb1 | 365 | OVSRCU_TYPE(struct dp_netdev_actions *) actions; |
0de8783a | 366 | |
11e5cf1f DDP |
367 | /* While processing a group of input packets, the datapath uses the next |
368 | * member to store a pointer to the output batch for the flow. It is | |
369 | * reset after the batch has been sent out (See dp_netdev_queue_batches(), | |
f7ce4811 PS |
370 | * packet_batch_per_flow_init() and packet_batch_per_flow_execute()). */ |
371 | struct packet_batch_per_flow *batch; | |
11e5cf1f | 372 | |
0de8783a JR |
373 | /* Packet classification. */ |
374 | struct dpcls_rule cr; /* In owning dp_netdev's 'cls'. */ | |
375 | /* 'cr' must be the last member. */ | |
72865317 BP |
376 | }; |
377 | ||
ed79f89a | 378 | static void dp_netdev_flow_unref(struct dp_netdev_flow *); |
9bbf1c3d | 379 | static bool dp_netdev_flow_ref(struct dp_netdev_flow *); |
70e5ed6f JS |
380 | static int dpif_netdev_flow_from_nlattrs(const struct nlattr *, uint32_t, |
381 | struct flow *); | |
8a4e3a85 | 382 | |
a84cb64a BP |
383 | /* A set of datapath actions within a "struct dp_netdev_flow". |
384 | * | |
385 | * | |
386 | * Thread-safety | |
387 | * ============= | |
388 | * | |
45c626a3 | 389 | * A struct dp_netdev_actions 'actions' is protected with RCU. */ |
a84cb64a | 390 | struct dp_netdev_actions { |
a84cb64a BP |
391 | /* These members are immutable: they do not change during the struct's |
392 | * lifetime. */ | |
a84cb64a | 393 | unsigned int size; /* Size of 'actions', in bytes. */ |
9ff55ae2 | 394 | struct nlattr actions[]; /* Sequence of OVS_ACTION_ATTR_* attributes. */ |
a84cb64a BP |
395 | }; |
396 | ||
397 | struct dp_netdev_actions *dp_netdev_actions_create(const struct nlattr *, | |
398 | size_t); | |
61e7deb1 BP |
399 | struct dp_netdev_actions *dp_netdev_flow_get_actions( |
400 | const struct dp_netdev_flow *); | |
401 | static void dp_netdev_actions_free(struct dp_netdev_actions *); | |
a84cb64a | 402 | |
1c1e46ed AW |
403 | /* Contained by struct dp_netdev_pmd_thread's 'stats' member. */ |
404 | struct dp_netdev_pmd_stats { | |
405 | /* Indexed by DP_STAT_*. */ | |
eb94da30 | 406 | atomic_ullong n[DP_N_STATS]; |
1c1e46ed AW |
407 | }; |
408 | ||
55e3ca97 DDP |
409 | /* Contained by struct dp_netdev_pmd_thread's 'cycle' member. */ |
410 | struct dp_netdev_pmd_cycles { | |
411 | /* Indexed by PMD_CYCLES_*. */ | |
412 | atomic_ullong n[PMD_N_CYCLES]; | |
413 | }; | |
414 | ||
ae7ad0a1 IM |
415 | /* Contained by struct dp_netdev_pmd_thread's 'poll_list' member. */ |
416 | struct rxq_poll { | |
417 | struct dp_netdev_port *port; | |
418 | struct netdev_rxq *rx; | |
419 | struct ovs_list node; | |
420 | }; | |
421 | ||
d0cca6c3 DDP |
422 | /* Contained by struct dp_netdev_pmd_thread's 'port_cache' or 'tx_ports'. */ |
423 | struct tx_port { | |
324c8374 IM |
424 | struct dp_netdev_port *port; |
425 | int qid; | |
426 | long long last_used; | |
d0cca6c3 DDP |
427 | struct hmap_node node; |
428 | }; | |
429 | ||
e4cfed38 PS |
430 | /* PMD: Poll modes drivers. PMD accesses devices via polling to eliminate |
431 | * the performance overhead of interrupt processing. Therefore netdev can | |
432 | * not implement rx-wait for these devices. dpif-netdev needs to poll | |
433 | * these device to check for recv buffer. pmd-thread does polling for | |
1c1e46ed | 434 | * devices assigned to itself. |
e4cfed38 PS |
435 | * |
436 | * DPDK used PMD for accessing NIC. | |
437 | * | |
65f13b50 AW |
438 | * Note, instance with cpu core id NON_PMD_CORE_ID will be reserved for |
439 | * I/O of all non-pmd threads. There will be no actual thread created | |
440 | * for the instance. | |
1c1e46ed AW |
441 | * |
442 | * Each struct has its own flow table and classifier. Packets received | |
443 | * from managed ports are looked up in the corresponding pmd thread's | |
444 | * flow table, and are executed with the found actions. | |
445 | * */ | |
65f13b50 | 446 | struct dp_netdev_pmd_thread { |
6c3eee82 | 447 | struct dp_netdev *dp; |
1c1e46ed | 448 | struct ovs_refcount ref_cnt; /* Every reference must be refcount'ed. */ |
65f13b50 | 449 | struct cmap_node node; /* In 'dp->poll_threads'. */ |
accf8626 AW |
450 | |
451 | pthread_cond_t cond; /* For synchronizing pmd thread reload. */ | |
452 | struct ovs_mutex cond_mutex; /* Mutex for condition variable. */ | |
453 | ||
65f13b50 AW |
454 | /* Per thread exact-match cache. Note, the instance for cpu core |
455 | * NON_PMD_CORE_ID can be accessed by multiple threads, and thusly | |
d0cca6c3 DDP |
456 | * need to be protected by 'non_pmd_mutex'. Every other instance |
457 | * will only be accessed by its own pmd thread. */ | |
9bbf1c3d | 458 | struct emc_cache flow_cache; |
1c1e46ed | 459 | |
3453b4d6 | 460 | /* Flow-Table and classifiers |
1c1e46ed AW |
461 | * |
462 | * Writers of 'flow_table' must take the 'flow_mutex'. Corresponding | |
3453b4d6 JS |
463 | * changes to 'classifiers' must be made while still holding the |
464 | * 'flow_mutex'. | |
1c1e46ed AW |
465 | */ |
466 | struct ovs_mutex flow_mutex; | |
1c1e46ed AW |
467 | struct cmap flow_table OVS_GUARDED; /* Flow table. */ |
468 | ||
3453b4d6 JS |
469 | /* One classifier per in_port polled by the pmd */ |
470 | struct cmap classifiers; | |
471 | /* Periodically sort subtable vectors according to hit frequencies */ | |
472 | long long int next_optimization; | |
473 | ||
1c1e46ed AW |
474 | /* Statistics. */ |
475 | struct dp_netdev_pmd_stats stats; | |
476 | ||
55e3ca97 DDP |
477 | /* Cycles counters */ |
478 | struct dp_netdev_pmd_cycles cycles; | |
479 | ||
480 | /* Used to count cicles. See 'cycles_counter_end()' */ | |
481 | unsigned long long last_cycles; | |
482 | ||
65f13b50 AW |
483 | struct latch exit_latch; /* For terminating the pmd thread. */ |
484 | atomic_uint change_seq; /* For reloading pmd ports. */ | |
6c3eee82 | 485 | pthread_t thread; |
bd5131ba | 486 | unsigned core_id; /* CPU core id of this pmd thread. */ |
65f13b50 | 487 | int numa_id; /* numa node id of this pmd thread. */ |
3eb67853 | 488 | bool isolated; |
81acebda | 489 | |
324c8374 IM |
490 | /* Queue id used by this pmd thread to send packets on all netdevs if |
491 | * XPS disabled for this netdev. All static_tx_qid's are unique and less | |
492 | * than 'ovs_numa_get_n_cores() + 1'. */ | |
493 | atomic_int static_tx_qid; | |
6553d06b | 494 | |
d0cca6c3 | 495 | struct ovs_mutex port_mutex; /* Mutex for 'poll_list' and 'tx_ports'. */ |
ae7ad0a1 IM |
496 | /* List of rx queues to poll. */ |
497 | struct ovs_list poll_list OVS_GUARDED; | |
d0cca6c3 DDP |
498 | /* Number of elements in 'poll_list' */ |
499 | int poll_cnt; | |
500 | /* Map of 'tx_port's used for transmission. Written by the main thread, | |
501 | * read by the pmd thread. */ | |
502 | struct hmap tx_ports OVS_GUARDED; | |
503 | ||
504 | /* Map of 'tx_port' used in the fast path. This is a thread-local copy of | |
505 | * 'tx_ports'. The instance for cpu core NON_PMD_CORE_ID can be accessed | |
506 | * by multiple threads, and thusly need to be protected by 'non_pmd_mutex'. | |
507 | * Every other instance will only be accessed by its own pmd thread. */ | |
508 | struct hmap port_cache; | |
ae7ad0a1 | 509 | |
6553d06b DDP |
510 | /* Only a pmd thread can write on its own 'cycles' and 'stats'. |
511 | * The main thread keeps 'stats_zero' and 'cycles_zero' as base | |
512 | * values and subtracts them from 'stats' and 'cycles' before | |
513 | * reporting to the user */ | |
514 | unsigned long long stats_zero[DP_N_STATS]; | |
515 | uint64_t cycles_zero[PMD_N_CYCLES]; | |
6c3eee82 BP |
516 | }; |
517 | ||
84067a4c JR |
518 | #define PMD_INITIAL_SEQ 1 |
519 | ||
72865317 BP |
520 | /* Interface to netdev-based datapath. */ |
521 | struct dpif_netdev { | |
522 | struct dpif dpif; | |
523 | struct dp_netdev *dp; | |
d33ed218 | 524 | uint64_t last_port_seq; |
72865317 BP |
525 | }; |
526 | ||
8a4e3a85 | 527 | static int get_port_by_number(struct dp_netdev *dp, odp_port_t port_no, |
e9985d6a DDP |
528 | struct dp_netdev_port **portp) |
529 | OVS_REQUIRES(dp->port_mutex); | |
8a4e3a85 | 530 | static int get_port_by_name(struct dp_netdev *dp, const char *devname, |
e9985d6a DDP |
531 | struct dp_netdev_port **portp) |
532 | OVS_REQUIRES(dp->port_mutex); | |
8a4e3a85 BP |
533 | static void dp_netdev_free(struct dp_netdev *) |
534 | OVS_REQUIRES(dp_netdev_mutex); | |
8a4e3a85 BP |
535 | static int do_add_port(struct dp_netdev *dp, const char *devname, |
536 | const char *type, odp_port_t port_no) | |
59e6d833 | 537 | OVS_REQUIRES(dp->port_mutex); |
c40b890f | 538 | static void do_del_port(struct dp_netdev *dp, struct dp_netdev_port *) |
59e6d833 | 539 | OVS_REQUIRES(dp->port_mutex); |
614c4892 BP |
540 | static int dpif_netdev_open(const struct dpif_class *, const char *name, |
541 | bool create, struct dpif **); | |
65f13b50 | 542 | static void dp_netdev_execute_actions(struct dp_netdev_pmd_thread *pmd, |
1895cc8d | 543 | struct dp_packet_batch *, |
66e4ad8a | 544 | bool may_steal, const struct flow *flow, |
4edb9ae9 | 545 | const struct nlattr *actions, |
324c8374 IM |
546 | size_t actions_len, |
547 | long long now); | |
65f13b50 | 548 | static void dp_netdev_input(struct dp_netdev_pmd_thread *, |
1895cc8d | 549 | struct dp_packet_batch *, odp_port_t port_no); |
a90ed026 | 550 | static void dp_netdev_recirculate(struct dp_netdev_pmd_thread *, |
1895cc8d | 551 | struct dp_packet_batch *); |
41ccaa24 | 552 | |
6b31e073 | 553 | static void dp_netdev_disable_upcall(struct dp_netdev *); |
ae7ad0a1 | 554 | static void dp_netdev_pmd_reload_done(struct dp_netdev_pmd_thread *pmd); |
65f13b50 | 555 | static void dp_netdev_configure_pmd(struct dp_netdev_pmd_thread *pmd, |
00873463 DDP |
556 | struct dp_netdev *dp, unsigned core_id, |
557 | int numa_id); | |
1c1e46ed | 558 | static void dp_netdev_destroy_pmd(struct dp_netdev_pmd_thread *pmd); |
e9985d6a DDP |
559 | static void dp_netdev_set_nonpmd(struct dp_netdev *dp) |
560 | OVS_REQUIRES(dp->port_mutex); | |
561 | ||
b19befae | 562 | static struct dp_netdev_pmd_thread *dp_netdev_get_pmd(struct dp_netdev *dp, |
bd5131ba | 563 | unsigned core_id); |
1c1e46ed AW |
564 | static struct dp_netdev_pmd_thread * |
565 | dp_netdev_pmd_get_next(struct dp_netdev *dp, struct cmap_position *pos); | |
65f13b50 AW |
566 | static void dp_netdev_destroy_all_pmds(struct dp_netdev *dp); |
567 | static void dp_netdev_del_pmds_on_numa(struct dp_netdev *dp, int numa_id); | |
e9985d6a DDP |
568 | static void dp_netdev_set_pmds_on_numa(struct dp_netdev *dp, int numa_id) |
569 | OVS_REQUIRES(dp->port_mutex); | |
d0cca6c3 | 570 | static void dp_netdev_pmd_clear_ports(struct dp_netdev_pmd_thread *pmd); |
cc245ce8 IM |
571 | static void dp_netdev_del_port_from_all_pmds(struct dp_netdev *dp, |
572 | struct dp_netdev_port *port); | |
d0cca6c3 DDP |
573 | static void dp_netdev_add_port_to_pmds(struct dp_netdev *dp, |
574 | struct dp_netdev_port *port); | |
575 | static void dp_netdev_add_port_tx_to_pmd(struct dp_netdev_pmd_thread *pmd, | |
576 | struct dp_netdev_port *port); | |
577 | static void dp_netdev_add_rxq_to_pmd(struct dp_netdev_pmd_thread *pmd, | |
578 | struct dp_netdev_port *port, | |
579 | struct netdev_rxq *rx); | |
ae7ad0a1 IM |
580 | static struct dp_netdev_pmd_thread * |
581 | dp_netdev_less_loaded_pmd_on_numa(struct dp_netdev *dp, int numa_id); | |
e9985d6a DDP |
582 | static void dp_netdev_reset_pmd_threads(struct dp_netdev *dp) |
583 | OVS_REQUIRES(dp->port_mutex); | |
3eb67853 IM |
584 | static void reconfigure_pmd_threads(struct dp_netdev *dp) |
585 | OVS_REQUIRES(dp->port_mutex); | |
1c1e46ed AW |
586 | static bool dp_netdev_pmd_try_ref(struct dp_netdev_pmd_thread *pmd); |
587 | static void dp_netdev_pmd_unref(struct dp_netdev_pmd_thread *pmd); | |
588 | static void dp_netdev_pmd_flow_flush(struct dp_netdev_pmd_thread *pmd); | |
d0cca6c3 DDP |
589 | static void pmd_load_cached_ports(struct dp_netdev_pmd_thread *pmd) |
590 | OVS_REQUIRES(pmd->port_mutex); | |
3453b4d6 JS |
591 | static inline void |
592 | dp_netdev_pmd_try_optimize(struct dp_netdev_pmd_thread *pmd); | |
72865317 | 593 | |
324c8374 IM |
594 | static void |
595 | dpif_netdev_xps_revalidate_pmd(const struct dp_netdev_pmd_thread *pmd, | |
596 | long long now, bool purge); | |
597 | static int dpif_netdev_xps_get_tx_qid(const struct dp_netdev_pmd_thread *pmd, | |
598 | struct tx_port *tx, long long now); | |
599 | ||
67ad54cb | 600 | static inline bool emc_entry_alive(struct emc_entry *ce); |
9bbf1c3d DDP |
601 | static void emc_clear_entry(struct emc_entry *ce); |
602 | ||
603 | static void | |
604 | emc_cache_init(struct emc_cache *flow_cache) | |
605 | { | |
606 | int i; | |
607 | ||
67ad54cb | 608 | flow_cache->sweep_idx = 0; |
9bbf1c3d DDP |
609 | for (i = 0; i < ARRAY_SIZE(flow_cache->entries); i++) { |
610 | flow_cache->entries[i].flow = NULL; | |
0de8783a | 611 | flow_cache->entries[i].key.hash = 0; |
09b0fa9c | 612 | flow_cache->entries[i].key.len = sizeof(struct miniflow); |
5fcff47b | 613 | flowmap_init(&flow_cache->entries[i].key.mf.map); |
9bbf1c3d DDP |
614 | } |
615 | } | |
616 | ||
617 | static void | |
618 | emc_cache_uninit(struct emc_cache *flow_cache) | |
619 | { | |
620 | int i; | |
621 | ||
622 | for (i = 0; i < ARRAY_SIZE(flow_cache->entries); i++) { | |
623 | emc_clear_entry(&flow_cache->entries[i]); | |
624 | } | |
625 | } | |
626 | ||
67ad54cb AW |
627 | /* Check and clear dead flow references slowly (one entry at each |
628 | * invocation). */ | |
629 | static void | |
630 | emc_cache_slow_sweep(struct emc_cache *flow_cache) | |
631 | { | |
632 | struct emc_entry *entry = &flow_cache->entries[flow_cache->sweep_idx]; | |
633 | ||
634 | if (!emc_entry_alive(entry)) { | |
635 | emc_clear_entry(entry); | |
636 | } | |
637 | flow_cache->sweep_idx = (flow_cache->sweep_idx + 1) & EM_FLOW_HASH_MASK; | |
638 | } | |
639 | ||
c4ea7529 BP |
640 | /* Returns true if 'dpif' is a netdev or dummy dpif, false otherwise. */ |
641 | bool | |
642 | dpif_is_netdev(const struct dpif *dpif) | |
643 | { | |
644 | return dpif->dpif_class->open == dpif_netdev_open; | |
645 | } | |
646 | ||
72865317 BP |
647 | static struct dpif_netdev * |
648 | dpif_netdev_cast(const struct dpif *dpif) | |
649 | { | |
c4ea7529 | 650 | ovs_assert(dpif_is_netdev(dpif)); |
72865317 BP |
651 | return CONTAINER_OF(dpif, struct dpif_netdev, dpif); |
652 | } | |
653 | ||
654 | static struct dp_netdev * | |
655 | get_dp_netdev(const struct dpif *dpif) | |
656 | { | |
657 | return dpif_netdev_cast(dpif)->dp; | |
658 | } | |
6553d06b DDP |
659 | \f |
660 | enum pmd_info_type { | |
ce179f11 IM |
661 | PMD_INFO_SHOW_STATS, /* Show how cpu cycles are spent. */ |
662 | PMD_INFO_CLEAR_STATS, /* Set the cycles count to 0. */ | |
663 | PMD_INFO_SHOW_RXQ /* Show poll-lists of pmd threads. */ | |
6553d06b DDP |
664 | }; |
665 | ||
666 | static void | |
667 | pmd_info_show_stats(struct ds *reply, | |
668 | struct dp_netdev_pmd_thread *pmd, | |
669 | unsigned long long stats[DP_N_STATS], | |
670 | uint64_t cycles[PMD_N_CYCLES]) | |
671 | { | |
672 | unsigned long long total_packets = 0; | |
673 | uint64_t total_cycles = 0; | |
674 | int i; | |
675 | ||
676 | /* These loops subtracts reference values ('*_zero') from the counters. | |
677 | * Since loads and stores are relaxed, it might be possible for a '*_zero' | |
678 | * value to be more recent than the current value we're reading from the | |
679 | * counter. This is not a big problem, since these numbers are not | |
680 | * supposed to be too accurate, but we should at least make sure that | |
681 | * the result is not negative. */ | |
682 | for (i = 0; i < DP_N_STATS; i++) { | |
683 | if (stats[i] > pmd->stats_zero[i]) { | |
684 | stats[i] -= pmd->stats_zero[i]; | |
685 | } else { | |
686 | stats[i] = 0; | |
687 | } | |
688 | ||
689 | if (i != DP_STAT_LOST) { | |
690 | /* Lost packets are already included in DP_STAT_MISS */ | |
691 | total_packets += stats[i]; | |
692 | } | |
693 | } | |
694 | ||
695 | for (i = 0; i < PMD_N_CYCLES; i++) { | |
696 | if (cycles[i] > pmd->cycles_zero[i]) { | |
697 | cycles[i] -= pmd->cycles_zero[i]; | |
698 | } else { | |
699 | cycles[i] = 0; | |
700 | } | |
701 | ||
702 | total_cycles += cycles[i]; | |
703 | } | |
704 | ||
705 | ds_put_cstr(reply, (pmd->core_id == NON_PMD_CORE_ID) | |
706 | ? "main thread" : "pmd thread"); | |
707 | ||
708 | if (pmd->numa_id != OVS_NUMA_UNSPEC) { | |
709 | ds_put_format(reply, " numa_id %d", pmd->numa_id); | |
710 | } | |
d5c199ea | 711 | if (pmd->core_id != OVS_CORE_UNSPEC && pmd->core_id != NON_PMD_CORE_ID) { |
bd5131ba | 712 | ds_put_format(reply, " core_id %u", pmd->core_id); |
6553d06b DDP |
713 | } |
714 | ds_put_cstr(reply, ":\n"); | |
715 | ||
716 | ds_put_format(reply, | |
717 | "\temc hits:%llu\n\tmegaflow hits:%llu\n" | |
3453b4d6 | 718 | "\tavg. subtable lookups per hit:%.2f\n" |
6553d06b DDP |
719 | "\tmiss:%llu\n\tlost:%llu\n", |
720 | stats[DP_STAT_EXACT_HIT], stats[DP_STAT_MASKED_HIT], | |
3453b4d6 JS |
721 | stats[DP_STAT_MASKED_HIT] > 0 |
722 | ? (1.0*stats[DP_STAT_LOOKUP_HIT])/stats[DP_STAT_MASKED_HIT] | |
723 | : 0, | |
6553d06b DDP |
724 | stats[DP_STAT_MISS], stats[DP_STAT_LOST]); |
725 | ||
726 | if (total_cycles == 0) { | |
727 | return; | |
728 | } | |
729 | ||
730 | ds_put_format(reply, | |
731 | "\tpolling cycles:%"PRIu64" (%.02f%%)\n" | |
732 | "\tprocessing cycles:%"PRIu64" (%.02f%%)\n", | |
733 | cycles[PMD_CYCLES_POLLING], | |
734 | cycles[PMD_CYCLES_POLLING] / (double)total_cycles * 100, | |
735 | cycles[PMD_CYCLES_PROCESSING], | |
736 | cycles[PMD_CYCLES_PROCESSING] / (double)total_cycles * 100); | |
737 | ||
738 | if (total_packets == 0) { | |
739 | return; | |
740 | } | |
741 | ||
742 | ds_put_format(reply, | |
743 | "\tavg cycles per packet: %.02f (%"PRIu64"/%llu)\n", | |
744 | total_cycles / (double)total_packets, | |
745 | total_cycles, total_packets); | |
746 | ||
747 | ds_put_format(reply, | |
748 | "\tavg processing cycles per packet: " | |
749 | "%.02f (%"PRIu64"/%llu)\n", | |
750 | cycles[PMD_CYCLES_PROCESSING] / (double)total_packets, | |
751 | cycles[PMD_CYCLES_PROCESSING], total_packets); | |
752 | } | |
753 | ||
754 | static void | |
755 | pmd_info_clear_stats(struct ds *reply OVS_UNUSED, | |
756 | struct dp_netdev_pmd_thread *pmd, | |
757 | unsigned long long stats[DP_N_STATS], | |
758 | uint64_t cycles[PMD_N_CYCLES]) | |
759 | { | |
760 | int i; | |
761 | ||
762 | /* We cannot write 'stats' and 'cycles' (because they're written by other | |
763 | * threads) and we shouldn't change 'stats' (because they're used to count | |
764 | * datapath stats, which must not be cleared here). Instead, we save the | |
765 | * current values and subtract them from the values to be displayed in the | |
766 | * future */ | |
767 | for (i = 0; i < DP_N_STATS; i++) { | |
768 | pmd->stats_zero[i] = stats[i]; | |
769 | } | |
770 | for (i = 0; i < PMD_N_CYCLES; i++) { | |
771 | pmd->cycles_zero[i] = cycles[i]; | |
772 | } | |
773 | } | |
774 | ||
ce179f11 IM |
775 | static void |
776 | pmd_info_show_rxq(struct ds *reply, struct dp_netdev_pmd_thread *pmd) | |
777 | { | |
778 | if (pmd->core_id != NON_PMD_CORE_ID) { | |
779 | struct rxq_poll *poll; | |
780 | const char *prev_name = NULL; | |
781 | ||
3eb67853 IM |
782 | ds_put_format(reply, |
783 | "pmd thread numa_id %d core_id %u:\n\tisolated : %s\n", | |
784 | pmd->numa_id, pmd->core_id, (pmd->isolated) | |
785 | ? "true" : "false"); | |
ce179f11 | 786 | |
d0cca6c3 | 787 | ovs_mutex_lock(&pmd->port_mutex); |
ce179f11 IM |
788 | LIST_FOR_EACH (poll, node, &pmd->poll_list) { |
789 | const char *name = netdev_get_name(poll->port->netdev); | |
790 | ||
791 | if (!prev_name || strcmp(name, prev_name)) { | |
792 | if (prev_name) { | |
793 | ds_put_cstr(reply, "\n"); | |
794 | } | |
795 | ds_put_format(reply, "\tport: %s\tqueue-id:", | |
796 | netdev_get_name(poll->port->netdev)); | |
797 | } | |
798 | ds_put_format(reply, " %d", netdev_rxq_get_queue_id(poll->rx)); | |
799 | prev_name = name; | |
800 | } | |
d0cca6c3 | 801 | ovs_mutex_unlock(&pmd->port_mutex); |
ce179f11 IM |
802 | ds_put_cstr(reply, "\n"); |
803 | } | |
804 | } | |
805 | ||
6553d06b DDP |
806 | static void |
807 | dpif_netdev_pmd_info(struct unixctl_conn *conn, int argc, const char *argv[], | |
808 | void *aux) | |
809 | { | |
810 | struct ds reply = DS_EMPTY_INITIALIZER; | |
811 | struct dp_netdev_pmd_thread *pmd; | |
812 | struct dp_netdev *dp = NULL; | |
813 | enum pmd_info_type type = *(enum pmd_info_type *) aux; | |
814 | ||
815 | ovs_mutex_lock(&dp_netdev_mutex); | |
816 | ||
817 | if (argc == 2) { | |
818 | dp = shash_find_data(&dp_netdevs, argv[1]); | |
819 | } else if (shash_count(&dp_netdevs) == 1) { | |
820 | /* There's only one datapath */ | |
821 | dp = shash_first(&dp_netdevs)->data; | |
822 | } | |
823 | ||
824 | if (!dp) { | |
825 | ovs_mutex_unlock(&dp_netdev_mutex); | |
826 | unixctl_command_reply_error(conn, | |
827 | "please specify an existing datapath"); | |
828 | return; | |
829 | } | |
830 | ||
831 | CMAP_FOR_EACH (pmd, node, &dp->poll_threads) { | |
ce179f11 IM |
832 | if (type == PMD_INFO_SHOW_RXQ) { |
833 | pmd_info_show_rxq(&reply, pmd); | |
834 | } else { | |
835 | unsigned long long stats[DP_N_STATS]; | |
836 | uint64_t cycles[PMD_N_CYCLES]; | |
837 | int i; | |
6553d06b | 838 | |
ce179f11 IM |
839 | /* Read current stats and cycle counters */ |
840 | for (i = 0; i < ARRAY_SIZE(stats); i++) { | |
841 | atomic_read_relaxed(&pmd->stats.n[i], &stats[i]); | |
842 | } | |
843 | for (i = 0; i < ARRAY_SIZE(cycles); i++) { | |
844 | atomic_read_relaxed(&pmd->cycles.n[i], &cycles[i]); | |
845 | } | |
6553d06b | 846 | |
ce179f11 IM |
847 | if (type == PMD_INFO_CLEAR_STATS) { |
848 | pmd_info_clear_stats(&reply, pmd, stats, cycles); | |
849 | } else if (type == PMD_INFO_SHOW_STATS) { | |
850 | pmd_info_show_stats(&reply, pmd, stats, cycles); | |
851 | } | |
6553d06b DDP |
852 | } |
853 | } | |
854 | ||
855 | ovs_mutex_unlock(&dp_netdev_mutex); | |
856 | ||
857 | unixctl_command_reply(conn, ds_cstr(&reply)); | |
858 | ds_destroy(&reply); | |
859 | } | |
860 | \f | |
861 | static int | |
862 | dpif_netdev_init(void) | |
863 | { | |
864 | static enum pmd_info_type show_aux = PMD_INFO_SHOW_STATS, | |
ce179f11 IM |
865 | clear_aux = PMD_INFO_CLEAR_STATS, |
866 | poll_aux = PMD_INFO_SHOW_RXQ; | |
6553d06b DDP |
867 | |
868 | unixctl_command_register("dpif-netdev/pmd-stats-show", "[dp]", | |
869 | 0, 1, dpif_netdev_pmd_info, | |
870 | (void *)&show_aux); | |
871 | unixctl_command_register("dpif-netdev/pmd-stats-clear", "[dp]", | |
872 | 0, 1, dpif_netdev_pmd_info, | |
873 | (void *)&clear_aux); | |
ce179f11 IM |
874 | unixctl_command_register("dpif-netdev/pmd-rxq-show", "[dp]", |
875 | 0, 1, dpif_netdev_pmd_info, | |
876 | (void *)&poll_aux); | |
6553d06b DDP |
877 | return 0; |
878 | } | |
72865317 | 879 | |
2197d7ab | 880 | static int |
2240af25 DDP |
881 | dpif_netdev_enumerate(struct sset *all_dps, |
882 | const struct dpif_class *dpif_class) | |
2197d7ab GL |
883 | { |
884 | struct shash_node *node; | |
885 | ||
97be1538 | 886 | ovs_mutex_lock(&dp_netdev_mutex); |
2197d7ab | 887 | SHASH_FOR_EACH(node, &dp_netdevs) { |
2240af25 DDP |
888 | struct dp_netdev *dp = node->data; |
889 | if (dpif_class != dp->class) { | |
890 | /* 'dp_netdevs' contains both "netdev" and "dummy" dpifs. | |
891 | * If the class doesn't match, skip this dpif. */ | |
892 | continue; | |
893 | } | |
2197d7ab GL |
894 | sset_add(all_dps, node->name); |
895 | } | |
97be1538 | 896 | ovs_mutex_unlock(&dp_netdev_mutex); |
5279f8fd | 897 | |
2197d7ab GL |
898 | return 0; |
899 | } | |
900 | ||
add90f6f EJ |
901 | static bool |
902 | dpif_netdev_class_is_dummy(const struct dpif_class *class) | |
903 | { | |
904 | return class != &dpif_netdev_class; | |
905 | } | |
906 | ||
0aeaabc8 JP |
907 | static const char * |
908 | dpif_netdev_port_open_type(const struct dpif_class *class, const char *type) | |
909 | { | |
910 | return strcmp(type, "internal") ? type | |
e98d0cb3 | 911 | : dpif_netdev_class_is_dummy(class) ? "dummy-internal" |
0aeaabc8 JP |
912 | : "tap"; |
913 | } | |
914 | ||
72865317 BP |
915 | static struct dpif * |
916 | create_dpif_netdev(struct dp_netdev *dp) | |
917 | { | |
462278db | 918 | uint16_t netflow_id = hash_string(dp->name, 0); |
72865317 | 919 | struct dpif_netdev *dpif; |
72865317 | 920 | |
6a8267c5 | 921 | ovs_refcount_ref(&dp->ref_cnt); |
72865317 | 922 | |
72865317 | 923 | dpif = xmalloc(sizeof *dpif); |
614c4892 | 924 | dpif_init(&dpif->dpif, dp->class, dp->name, netflow_id >> 8, netflow_id); |
72865317 | 925 | dpif->dp = dp; |
d33ed218 | 926 | dpif->last_port_seq = seq_read(dp->port_seq); |
72865317 BP |
927 | |
928 | return &dpif->dpif; | |
929 | } | |
930 | ||
4e022ec0 AW |
931 | /* Choose an unused, non-zero port number and return it on success. |
932 | * Return ODPP_NONE on failure. */ | |
933 | static odp_port_t | |
e44768b7 | 934 | choose_port(struct dp_netdev *dp, const char *name) |
59e6d833 | 935 | OVS_REQUIRES(dp->port_mutex) |
e44768b7 | 936 | { |
4e022ec0 | 937 | uint32_t port_no; |
e44768b7 JP |
938 | |
939 | if (dp->class != &dpif_netdev_class) { | |
940 | const char *p; | |
941 | int start_no = 0; | |
942 | ||
943 | /* If the port name begins with "br", start the number search at | |
944 | * 100 to make writing tests easier. */ | |
945 | if (!strncmp(name, "br", 2)) { | |
946 | start_no = 100; | |
947 | } | |
948 | ||
949 | /* If the port name contains a number, try to assign that port number. | |
950 | * This can make writing unit tests easier because port numbers are | |
951 | * predictable. */ | |
952 | for (p = name; *p != '\0'; p++) { | |
953 | if (isdigit((unsigned char) *p)) { | |
954 | port_no = start_no + strtol(p, NULL, 10); | |
ff073a71 BP |
955 | if (port_no > 0 && port_no != odp_to_u32(ODPP_NONE) |
956 | && !dp_netdev_lookup_port(dp, u32_to_odp(port_no))) { | |
4e022ec0 | 957 | return u32_to_odp(port_no); |
e44768b7 JP |
958 | } |
959 | break; | |
960 | } | |
961 | } | |
962 | } | |
963 | ||
ff073a71 BP |
964 | for (port_no = 1; port_no <= UINT16_MAX; port_no++) { |
965 | if (!dp_netdev_lookup_port(dp, u32_to_odp(port_no))) { | |
4e022ec0 | 966 | return u32_to_odp(port_no); |
e44768b7 JP |
967 | } |
968 | } | |
969 | ||
4e022ec0 | 970 | return ODPP_NONE; |
e44768b7 JP |
971 | } |
972 | ||
72865317 | 973 | static int |
614c4892 BP |
974 | create_dp_netdev(const char *name, const struct dpif_class *class, |
975 | struct dp_netdev **dpp) | |
8a4e3a85 | 976 | OVS_REQUIRES(dp_netdev_mutex) |
72865317 BP |
977 | { |
978 | struct dp_netdev *dp; | |
979 | int error; | |
72865317 | 980 | |
462278db | 981 | dp = xzalloc(sizeof *dp); |
8a4e3a85 BP |
982 | shash_add(&dp_netdevs, name, dp); |
983 | ||
984 | *CONST_CAST(const struct dpif_class **, &dp->class) = class; | |
985 | *CONST_CAST(const char **, &dp->name) = xstrdup(name); | |
6a8267c5 | 986 | ovs_refcount_init(&dp->ref_cnt); |
1a65ba85 | 987 | atomic_flag_clear(&dp->destroyed); |
8a4e3a85 | 988 | |
59e6d833 | 989 | ovs_mutex_init(&dp->port_mutex); |
e9985d6a | 990 | hmap_init(&dp->ports); |
d33ed218 | 991 | dp->port_seq = seq_create(); |
6b31e073 RW |
992 | fat_rwlock_init(&dp->upcall_rwlock); |
993 | ||
a6a426d6 IM |
994 | dp->reconfigure_seq = seq_create(); |
995 | dp->last_reconfigure_seq = seq_read(dp->reconfigure_seq); | |
996 | ||
6b31e073 RW |
997 | /* Disable upcalls by default. */ |
998 | dp_netdev_disable_upcall(dp); | |
623540e4 | 999 | dp->upcall_aux = NULL; |
6b31e073 | 1000 | dp->upcall_cb = NULL; |
e44768b7 | 1001 | |
5cf3edb3 DDP |
1002 | conntrack_init(&dp->conntrack); |
1003 | ||
65f13b50 AW |
1004 | cmap_init(&dp->poll_threads); |
1005 | ovs_mutex_init_recursive(&dp->non_pmd_mutex); | |
1006 | ovsthread_key_create(&dp->per_pmd_key, NULL); | |
1007 | ||
e9985d6a | 1008 | ovs_mutex_lock(&dp->port_mutex); |
f2eee189 | 1009 | dp_netdev_set_nonpmd(dp); |
65f13b50 | 1010 | |
a3e8437a TLSC |
1011 | error = do_add_port(dp, name, dpif_netdev_port_open_type(dp->class, |
1012 | "internal"), | |
1013 | ODPP_LOCAL); | |
59e6d833 | 1014 | ovs_mutex_unlock(&dp->port_mutex); |
72865317 BP |
1015 | if (error) { |
1016 | dp_netdev_free(dp); | |
462278db | 1017 | return error; |
72865317 BP |
1018 | } |
1019 | ||
a36de779 | 1020 | dp->last_tnl_conf_seq = seq_read(tnl_conf_seq); |
462278db | 1021 | *dpp = dp; |
72865317 BP |
1022 | return 0; |
1023 | } | |
1024 | ||
a6a426d6 IM |
1025 | static void |
1026 | dp_netdev_request_reconfigure(struct dp_netdev *dp) | |
1027 | { | |
1028 | seq_change(dp->reconfigure_seq); | |
1029 | } | |
1030 | ||
1031 | static bool | |
1032 | dp_netdev_is_reconf_required(struct dp_netdev *dp) | |
1033 | { | |
1034 | return seq_read(dp->reconfigure_seq) != dp->last_reconfigure_seq; | |
1035 | } | |
1036 | ||
72865317 | 1037 | static int |
614c4892 | 1038 | dpif_netdev_open(const struct dpif_class *class, const char *name, |
4a387741 | 1039 | bool create, struct dpif **dpifp) |
72865317 | 1040 | { |
462278db | 1041 | struct dp_netdev *dp; |
5279f8fd | 1042 | int error; |
462278db | 1043 | |
97be1538 | 1044 | ovs_mutex_lock(&dp_netdev_mutex); |
462278db BP |
1045 | dp = shash_find_data(&dp_netdevs, name); |
1046 | if (!dp) { | |
5279f8fd | 1047 | error = create ? create_dp_netdev(name, class, &dp) : ENODEV; |
72865317 | 1048 | } else { |
5279f8fd BP |
1049 | error = (dp->class != class ? EINVAL |
1050 | : create ? EEXIST | |
1051 | : 0); | |
1052 | } | |
1053 | if (!error) { | |
1054 | *dpifp = create_dpif_netdev(dp); | |
6b31e073 | 1055 | dp->dpif = *dpifp; |
72865317 | 1056 | } |
97be1538 | 1057 | ovs_mutex_unlock(&dp_netdev_mutex); |
462278db | 1058 | |
5279f8fd | 1059 | return error; |
72865317 BP |
1060 | } |
1061 | ||
88ace79b DDP |
1062 | static void |
1063 | dp_netdev_destroy_upcall_lock(struct dp_netdev *dp) | |
1064 | OVS_NO_THREAD_SAFETY_ANALYSIS | |
1065 | { | |
1066 | /* Check that upcalls are disabled, i.e. that the rwlock is taken */ | |
1067 | ovs_assert(fat_rwlock_tryrdlock(&dp->upcall_rwlock)); | |
1068 | ||
1069 | /* Before freeing a lock we should release it */ | |
1070 | fat_rwlock_unlock(&dp->upcall_rwlock); | |
1071 | fat_rwlock_destroy(&dp->upcall_rwlock); | |
1072 | } | |
1073 | ||
8a4e3a85 BP |
1074 | /* Requires dp_netdev_mutex so that we can't get a new reference to 'dp' |
1075 | * through the 'dp_netdevs' shash while freeing 'dp'. */ | |
1ba530f4 BP |
1076 | static void |
1077 | dp_netdev_free(struct dp_netdev *dp) | |
8a4e3a85 | 1078 | OVS_REQUIRES(dp_netdev_mutex) |
1ba530f4 | 1079 | { |
e9985d6a | 1080 | struct dp_netdev_port *port, *next; |
4ad28026 | 1081 | |
8a4e3a85 BP |
1082 | shash_find_and_delete(&dp_netdevs, dp->name); |
1083 | ||
65f13b50 AW |
1084 | dp_netdev_destroy_all_pmds(dp); |
1085 | ovs_mutex_destroy(&dp->non_pmd_mutex); | |
1086 | ovsthread_key_delete(dp->per_pmd_key); | |
6c3eee82 | 1087 | |
5cf3edb3 DDP |
1088 | conntrack_destroy(&dp->conntrack); |
1089 | ||
59e6d833 | 1090 | ovs_mutex_lock(&dp->port_mutex); |
e9985d6a | 1091 | HMAP_FOR_EACH_SAFE (port, next, node, &dp->ports) { |
c40b890f | 1092 | do_del_port(dp, port); |
1ba530f4 | 1093 | } |
59e6d833 | 1094 | ovs_mutex_unlock(&dp->port_mutex); |
d916785c | 1095 | cmap_destroy(&dp->poll_threads); |
51852a57 | 1096 | |
a6a426d6 IM |
1097 | seq_destroy(dp->reconfigure_seq); |
1098 | ||
d33ed218 | 1099 | seq_destroy(dp->port_seq); |
e9985d6a | 1100 | hmap_destroy(&dp->ports); |
3186ea46 | 1101 | ovs_mutex_destroy(&dp->port_mutex); |
88ace79b DDP |
1102 | |
1103 | /* Upcalls must be disabled at this point */ | |
1104 | dp_netdev_destroy_upcall_lock(dp); | |
9bbf1c3d | 1105 | |
f2eee189 | 1106 | free(dp->pmd_cmask); |
8a4e3a85 | 1107 | free(CONST_CAST(char *, dp->name)); |
72865317 BP |
1108 | free(dp); |
1109 | } | |
1110 | ||
8a4e3a85 BP |
1111 | static void |
1112 | dp_netdev_unref(struct dp_netdev *dp) | |
1113 | { | |
1114 | if (dp) { | |
1115 | /* Take dp_netdev_mutex so that, if dp->ref_cnt falls to zero, we can't | |
1116 | * get a new reference to 'dp' through the 'dp_netdevs' shash. */ | |
1117 | ovs_mutex_lock(&dp_netdev_mutex); | |
24f83812 | 1118 | if (ovs_refcount_unref_relaxed(&dp->ref_cnt) == 1) { |
8a4e3a85 BP |
1119 | dp_netdev_free(dp); |
1120 | } | |
1121 | ovs_mutex_unlock(&dp_netdev_mutex); | |
1122 | } | |
1123 | } | |
1124 | ||
72865317 BP |
1125 | static void |
1126 | dpif_netdev_close(struct dpif *dpif) | |
1127 | { | |
1128 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
5279f8fd | 1129 | |
8a4e3a85 | 1130 | dp_netdev_unref(dp); |
72865317 BP |
1131 | free(dpif); |
1132 | } | |
1133 | ||
1134 | static int | |
7dab847a | 1135 | dpif_netdev_destroy(struct dpif *dpif) |
72865317 BP |
1136 | { |
1137 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
5279f8fd | 1138 | |
6a8267c5 | 1139 | if (!atomic_flag_test_and_set(&dp->destroyed)) { |
24f83812 | 1140 | if (ovs_refcount_unref_relaxed(&dp->ref_cnt) == 1) { |
6a8267c5 BP |
1141 | /* Can't happen: 'dpif' still owns a reference to 'dp'. */ |
1142 | OVS_NOT_REACHED(); | |
1143 | } | |
1144 | } | |
5279f8fd | 1145 | |
72865317 BP |
1146 | return 0; |
1147 | } | |
1148 | ||
eb94da30 DDP |
1149 | /* Add 'n' to the atomic variable 'var' non-atomically and using relaxed |
1150 | * load/store semantics. While the increment is not atomic, the load and | |
1151 | * store operations are, making it impossible to read inconsistent values. | |
1152 | * | |
1153 | * This is used to update thread local stats counters. */ | |
1154 | static void | |
1155 | non_atomic_ullong_add(atomic_ullong *var, unsigned long long n) | |
1156 | { | |
1157 | unsigned long long tmp; | |
1158 | ||
1159 | atomic_read_relaxed(var, &tmp); | |
1160 | tmp += n; | |
1161 | atomic_store_relaxed(var, tmp); | |
1162 | } | |
1163 | ||
72865317 | 1164 | static int |
a8d9304d | 1165 | dpif_netdev_get_stats(const struct dpif *dpif, struct dpif_dp_stats *stats) |
72865317 BP |
1166 | { |
1167 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
1c1e46ed | 1168 | struct dp_netdev_pmd_thread *pmd; |
8a4e3a85 | 1169 | |
1c1e46ed AW |
1170 | stats->n_flows = stats->n_hit = stats->n_missed = stats->n_lost = 0; |
1171 | CMAP_FOR_EACH (pmd, node, &dp->poll_threads) { | |
eb94da30 | 1172 | unsigned long long n; |
1c1e46ed | 1173 | stats->n_flows += cmap_count(&pmd->flow_table); |
eb94da30 | 1174 | |
abcf3ef4 DDP |
1175 | atomic_read_relaxed(&pmd->stats.n[DP_STAT_MASKED_HIT], &n); |
1176 | stats->n_hit += n; | |
1177 | atomic_read_relaxed(&pmd->stats.n[DP_STAT_EXACT_HIT], &n); | |
eb94da30 DDP |
1178 | stats->n_hit += n; |
1179 | atomic_read_relaxed(&pmd->stats.n[DP_STAT_MISS], &n); | |
1180 | stats->n_missed += n; | |
1181 | atomic_read_relaxed(&pmd->stats.n[DP_STAT_LOST], &n); | |
1182 | stats->n_lost += n; | |
51852a57 | 1183 | } |
1ce3fa06 | 1184 | stats->n_masks = UINT32_MAX; |
847108dc | 1185 | stats->n_mask_hit = UINT64_MAX; |
5279f8fd | 1186 | |
72865317 BP |
1187 | return 0; |
1188 | } | |
1189 | ||
e4cfed38 | 1190 | static void |
65f13b50 | 1191 | dp_netdev_reload_pmd__(struct dp_netdev_pmd_thread *pmd) |
e4cfed38 | 1192 | { |
65f13b50 AW |
1193 | int old_seq; |
1194 | ||
accf8626 | 1195 | if (pmd->core_id == NON_PMD_CORE_ID) { |
d0cca6c3 DDP |
1196 | ovs_mutex_lock(&pmd->dp->non_pmd_mutex); |
1197 | ovs_mutex_lock(&pmd->port_mutex); | |
1198 | pmd_load_cached_ports(pmd); | |
1199 | ovs_mutex_unlock(&pmd->port_mutex); | |
1200 | ovs_mutex_unlock(&pmd->dp->non_pmd_mutex); | |
accf8626 AW |
1201 | return; |
1202 | } | |
1203 | ||
1204 | ovs_mutex_lock(&pmd->cond_mutex); | |
65f13b50 | 1205 | atomic_add_relaxed(&pmd->change_seq, 1, &old_seq); |
accf8626 AW |
1206 | ovs_mutex_cond_wait(&pmd->cond, &pmd->cond_mutex); |
1207 | ovs_mutex_unlock(&pmd->cond_mutex); | |
65f13b50 | 1208 | } |
e4cfed38 | 1209 | |
59e6d833 BP |
1210 | static uint32_t |
1211 | hash_port_no(odp_port_t port_no) | |
1212 | { | |
1213 | return hash_int(odp_to_u32(port_no), 0); | |
1214 | } | |
1215 | ||
72865317 | 1216 | static int |
a3e8437a | 1217 | port_create(const char *devname, const char *type, |
b8d29252 | 1218 | odp_port_t port_no, struct dp_netdev_port **portp) |
72865317 | 1219 | { |
4b609110 | 1220 | struct netdev_saved_flags *sf; |
72865317 | 1221 | struct dp_netdev_port *port; |
2499a8ce | 1222 | enum netdev_flags flags; |
b8d29252 DDP |
1223 | struct netdev *netdev; |
1224 | int n_open_rxqs = 0; | |
324c8374 | 1225 | int n_cores = 0; |
b8d29252 | 1226 | int i, error; |
324c8374 | 1227 | bool dynamic_txqs = false; |
72865317 | 1228 | |
b8d29252 | 1229 | *portp = NULL; |
72865317 BP |
1230 | |
1231 | /* Open and validate network device. */ | |
a3e8437a | 1232 | error = netdev_open(devname, type, &netdev); |
72865317 | 1233 | if (error) { |
b8d29252 | 1234 | return error; |
72865317 | 1235 | } |
72865317 BP |
1236 | /* XXX reject non-Ethernet devices */ |
1237 | ||
2499a8ce AC |
1238 | netdev_get_flags(netdev, &flags); |
1239 | if (flags & NETDEV_LOOPBACK) { | |
1240 | VLOG_ERR("%s: cannot add a loopback device", devname); | |
d17f4f08 | 1241 | error = EINVAL; |
b8d29252 | 1242 | goto out; |
2499a8ce AC |
1243 | } |
1244 | ||
5a034064 | 1245 | if (netdev_is_pmd(netdev)) { |
324c8374 | 1246 | n_cores = ovs_numa_get_n_cores(); |
5a034064 AW |
1247 | |
1248 | if (n_cores == OVS_CORE_UNSPEC) { | |
1249 | VLOG_ERR("%s, cannot get cpu core info", devname); | |
d17f4f08 | 1250 | error = ENOENT; |
b8d29252 | 1251 | goto out; |
5a034064 AW |
1252 | } |
1253 | /* There can only be ovs_numa_get_n_cores() pmd threads, | |
3bcc10c0 DDP |
1254 | * so creates a txq for each, and one extra for the non |
1255 | * pmd threads. */ | |
050c60bf | 1256 | error = netdev_set_tx_multiq(netdev, n_cores + 1); |
7251515e | 1257 | if (error && (error != EOPNOTSUPP)) { |
5a034064 | 1258 | VLOG_ERR("%s, cannot set multiq", devname); |
b8d29252 | 1259 | goto out; |
5a034064 AW |
1260 | } |
1261 | } | |
050c60bf DDP |
1262 | |
1263 | if (netdev_is_reconf_required(netdev)) { | |
1264 | error = netdev_reconfigure(netdev); | |
1265 | if (error) { | |
1266 | goto out; | |
1267 | } | |
1268 | } | |
1269 | ||
324c8374 IM |
1270 | if (netdev_is_pmd(netdev)) { |
1271 | if (netdev_n_txq(netdev) < n_cores + 1) { | |
1272 | dynamic_txqs = true; | |
1273 | } | |
1274 | } | |
1275 | ||
e4cfed38 | 1276 | port = xzalloc(sizeof *port); |
35303d71 | 1277 | port->port_no = port_no; |
e4cfed38 | 1278 | port->netdev = netdev; |
490e82af | 1279 | port->n_rxq = netdev_n_rxq(netdev); |
3eb67853 | 1280 | port->rxqs = xcalloc(port->n_rxq, sizeof *port->rxqs); |
324c8374 | 1281 | port->txq_used = xcalloc(netdev_n_txq(netdev), sizeof *port->txq_used); |
e4cfed38 | 1282 | port->type = xstrdup(type); |
324c8374 IM |
1283 | ovs_mutex_init(&port->txq_used_mutex); |
1284 | port->dynamic_txqs = dynamic_txqs; | |
d17f4f08 | 1285 | |
490e82af | 1286 | for (i = 0; i < port->n_rxq; i++) { |
3eb67853 | 1287 | error = netdev_rxq_open(netdev, &port->rxqs[i].rxq, i); |
d17f4f08 | 1288 | if (error) { |
55c955bd PS |
1289 | VLOG_ERR("%s: cannot receive packets on this network device (%s)", |
1290 | devname, ovs_strerror(errno)); | |
d17f4f08 | 1291 | goto out_rxq_close; |
55c955bd | 1292 | } |
3eb67853 | 1293 | port->rxqs[i].core_id = -1; |
d17f4f08 | 1294 | n_open_rxqs++; |
7b6b0ef4 BP |
1295 | } |
1296 | ||
4b609110 | 1297 | error = netdev_turn_flags_on(netdev, NETDEV_PROMISC, &sf); |
72865317 | 1298 | if (error) { |
d17f4f08 | 1299 | goto out_rxq_close; |
72865317 | 1300 | } |
4b609110 | 1301 | port->sf = sf; |
e4cfed38 | 1302 | |
b8d29252 | 1303 | *portp = port; |
72865317 BP |
1304 | |
1305 | return 0; | |
d17f4f08 DDP |
1306 | |
1307 | out_rxq_close: | |
1308 | for (i = 0; i < n_open_rxqs; i++) { | |
3eb67853 | 1309 | netdev_rxq_close(port->rxqs[i].rxq); |
d17f4f08 | 1310 | } |
324c8374 | 1311 | ovs_mutex_destroy(&port->txq_used_mutex); |
d17f4f08 | 1312 | free(port->type); |
324c8374 | 1313 | free(port->txq_used); |
3eb67853 | 1314 | free(port->rxqs); |
d17f4f08 | 1315 | free(port); |
b8d29252 | 1316 | |
d17f4f08 | 1317 | out: |
b8d29252 | 1318 | netdev_close(netdev); |
d17f4f08 | 1319 | return error; |
72865317 BP |
1320 | } |
1321 | ||
b8d29252 DDP |
1322 | static int |
1323 | do_add_port(struct dp_netdev *dp, const char *devname, const char *type, | |
1324 | odp_port_t port_no) | |
1325 | OVS_REQUIRES(dp->port_mutex) | |
1326 | { | |
1327 | struct dp_netdev_port *port; | |
1328 | int error; | |
1329 | ||
1330 | /* Reject devices already in 'dp'. */ | |
1331 | if (!get_port_by_name(dp, devname, &port)) { | |
1332 | return EEXIST; | |
1333 | } | |
1334 | ||
a3e8437a | 1335 | error = port_create(devname, type, port_no, &port); |
b8d29252 DDP |
1336 | if (error) { |
1337 | return error; | |
1338 | } | |
1339 | ||
b8d29252 | 1340 | if (netdev_is_pmd(port->netdev)) { |
d0cca6c3 DDP |
1341 | int numa_id = netdev_get_numa_id(port->netdev); |
1342 | ||
1343 | ovs_assert(ovs_numa_numa_id_is_valid(numa_id)); | |
1344 | dp_netdev_set_pmds_on_numa(dp, numa_id); | |
b8d29252 | 1345 | } |
d0cca6c3 DDP |
1346 | |
1347 | dp_netdev_add_port_to_pmds(dp, port); | |
1348 | ||
e9985d6a | 1349 | hmap_insert(&dp->ports, &port->node, hash_port_no(port_no)); |
b8d29252 DDP |
1350 | seq_change(dp->port_seq); |
1351 | ||
1352 | return 0; | |
1353 | } | |
1354 | ||
247527db BP |
1355 | static int |
1356 | dpif_netdev_port_add(struct dpif *dpif, struct netdev *netdev, | |
4e022ec0 | 1357 | odp_port_t *port_nop) |
247527db BP |
1358 | { |
1359 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
3aa30359 BP |
1360 | char namebuf[NETDEV_VPORT_NAME_BUFSIZE]; |
1361 | const char *dpif_port; | |
4e022ec0 | 1362 | odp_port_t port_no; |
5279f8fd | 1363 | int error; |
247527db | 1364 | |
59e6d833 | 1365 | ovs_mutex_lock(&dp->port_mutex); |
3aa30359 | 1366 | dpif_port = netdev_vport_get_dpif_port(netdev, namebuf, sizeof namebuf); |
4e022ec0 | 1367 | if (*port_nop != ODPP_NONE) { |
ff073a71 BP |
1368 | port_no = *port_nop; |
1369 | error = dp_netdev_lookup_port(dp, *port_nop) ? EBUSY : 0; | |
232dfa4a | 1370 | } else { |
3aa30359 | 1371 | port_no = choose_port(dp, dpif_port); |
5279f8fd | 1372 | error = port_no == ODPP_NONE ? EFBIG : 0; |
232dfa4a | 1373 | } |
5279f8fd | 1374 | if (!error) { |
247527db | 1375 | *port_nop = port_no; |
5279f8fd | 1376 | error = do_add_port(dp, dpif_port, netdev_get_type(netdev), port_no); |
247527db | 1377 | } |
59e6d833 | 1378 | ovs_mutex_unlock(&dp->port_mutex); |
5279f8fd BP |
1379 | |
1380 | return error; | |
72865317 BP |
1381 | } |
1382 | ||
1383 | static int | |
4e022ec0 | 1384 | dpif_netdev_port_del(struct dpif *dpif, odp_port_t port_no) |
72865317 BP |
1385 | { |
1386 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
5279f8fd BP |
1387 | int error; |
1388 | ||
59e6d833 | 1389 | ovs_mutex_lock(&dp->port_mutex); |
c40b890f BP |
1390 | if (port_no == ODPP_LOCAL) { |
1391 | error = EINVAL; | |
1392 | } else { | |
1393 | struct dp_netdev_port *port; | |
1394 | ||
1395 | error = get_port_by_number(dp, port_no, &port); | |
1396 | if (!error) { | |
1397 | do_del_port(dp, port); | |
1398 | } | |
1399 | } | |
59e6d833 | 1400 | ovs_mutex_unlock(&dp->port_mutex); |
5279f8fd BP |
1401 | |
1402 | return error; | |
72865317 BP |
1403 | } |
1404 | ||
1405 | static bool | |
4e022ec0 | 1406 | is_valid_port_number(odp_port_t port_no) |
72865317 | 1407 | { |
ff073a71 BP |
1408 | return port_no != ODPP_NONE; |
1409 | } | |
1410 | ||
1411 | static struct dp_netdev_port * | |
1412 | dp_netdev_lookup_port(const struct dp_netdev *dp, odp_port_t port_no) | |
e9985d6a | 1413 | OVS_REQUIRES(dp->port_mutex) |
ff073a71 BP |
1414 | { |
1415 | struct dp_netdev_port *port; | |
1416 | ||
e9985d6a | 1417 | HMAP_FOR_EACH_WITH_HASH (port, node, hash_port_no(port_no), &dp->ports) { |
35303d71 | 1418 | if (port->port_no == port_no) { |
ff073a71 BP |
1419 | return port; |
1420 | } | |
1421 | } | |
1422 | return NULL; | |
72865317 BP |
1423 | } |
1424 | ||
1425 | static int | |
1426 | get_port_by_number(struct dp_netdev *dp, | |
4e022ec0 | 1427 | odp_port_t port_no, struct dp_netdev_port **portp) |
e9985d6a | 1428 | OVS_REQUIRES(dp->port_mutex) |
72865317 BP |
1429 | { |
1430 | if (!is_valid_port_number(port_no)) { | |
1431 | *portp = NULL; | |
1432 | return EINVAL; | |
1433 | } else { | |
ff073a71 | 1434 | *portp = dp_netdev_lookup_port(dp, port_no); |
72865317 BP |
1435 | return *portp ? 0 : ENOENT; |
1436 | } | |
1437 | } | |
1438 | ||
b284085e | 1439 | static void |
62453dad | 1440 | port_destroy(struct dp_netdev_port *port) |
b284085e | 1441 | { |
62453dad DDP |
1442 | if (!port) { |
1443 | return; | |
b284085e | 1444 | } |
b284085e | 1445 | |
62453dad DDP |
1446 | netdev_close(port->netdev); |
1447 | netdev_restore_flags(port->sf); | |
accf8626 | 1448 | |
62453dad | 1449 | for (unsigned i = 0; i < port->n_rxq; i++) { |
3eb67853 | 1450 | netdev_rxq_close(port->rxqs[i].rxq); |
b284085e | 1451 | } |
324c8374 | 1452 | ovs_mutex_destroy(&port->txq_used_mutex); |
3eb67853 | 1453 | free(port->rxq_affinity_list); |
324c8374 | 1454 | free(port->txq_used); |
3eb67853 | 1455 | free(port->rxqs); |
62453dad DDP |
1456 | free(port->type); |
1457 | free(port); | |
b284085e PS |
1458 | } |
1459 | ||
72865317 BP |
1460 | static int |
1461 | get_port_by_name(struct dp_netdev *dp, | |
1462 | const char *devname, struct dp_netdev_port **portp) | |
59e6d833 | 1463 | OVS_REQUIRES(dp->port_mutex) |
72865317 BP |
1464 | { |
1465 | struct dp_netdev_port *port; | |
1466 | ||
e9985d6a | 1467 | HMAP_FOR_EACH (port, node, &dp->ports) { |
3efb6063 | 1468 | if (!strcmp(netdev_get_name(port->netdev), devname)) { |
72865317 BP |
1469 | *portp = port; |
1470 | return 0; | |
1471 | } | |
1472 | } | |
1473 | return ENOENT; | |
1474 | } | |
1475 | ||
347ba9bb IM |
1476 | static int |
1477 | get_n_pmd_threads(struct dp_netdev *dp) | |
1478 | { | |
1479 | /* There is one non pmd thread in dp->poll_threads */ | |
1480 | return cmap_count(&dp->poll_threads) - 1; | |
1481 | } | |
1482 | ||
65f13b50 AW |
1483 | static int |
1484 | get_n_pmd_threads_on_numa(struct dp_netdev *dp, int numa_id) | |
1485 | { | |
1486 | struct dp_netdev_pmd_thread *pmd; | |
1487 | int n_pmds = 0; | |
1488 | ||
1489 | CMAP_FOR_EACH (pmd, node, &dp->poll_threads) { | |
1490 | if (pmd->numa_id == numa_id) { | |
1491 | n_pmds++; | |
1492 | } | |
1493 | } | |
1494 | ||
1495 | return n_pmds; | |
1496 | } | |
1497 | ||
1498 | /* Returns 'true' if there is a port with pmd netdev and the netdev | |
1499 | * is on numa node 'numa_id'. */ | |
1500 | static bool | |
1501 | has_pmd_port_for_numa(struct dp_netdev *dp, int numa_id) | |
e9985d6a | 1502 | OVS_REQUIRES(dp->port_mutex) |
65f13b50 AW |
1503 | { |
1504 | struct dp_netdev_port *port; | |
1505 | ||
e9985d6a | 1506 | HMAP_FOR_EACH (port, node, &dp->ports) { |
65f13b50 AW |
1507 | if (netdev_is_pmd(port->netdev) |
1508 | && netdev_get_numa_id(port->netdev) == numa_id) { | |
1509 | return true; | |
1510 | } | |
1511 | } | |
1512 | ||
1513 | return false; | |
1514 | } | |
1515 | ||
1516 | ||
c40b890f BP |
1517 | static void |
1518 | do_del_port(struct dp_netdev *dp, struct dp_netdev_port *port) | |
59e6d833 | 1519 | OVS_REQUIRES(dp->port_mutex) |
72865317 | 1520 | { |
e9985d6a | 1521 | hmap_remove(&dp->ports, &port->node); |
d33ed218 | 1522 | seq_change(dp->port_seq); |
d0cca6c3 DDP |
1523 | |
1524 | dp_netdev_del_port_from_all_pmds(dp, port); | |
1525 | ||
e4cfed38 | 1526 | if (netdev_is_pmd(port->netdev)) { |
65f13b50 AW |
1527 | int numa_id = netdev_get_numa_id(port->netdev); |
1528 | ||
ae7ad0a1 IM |
1529 | /* PMD threads can not be on invalid numa node. */ |
1530 | ovs_assert(ovs_numa_numa_id_is_valid(numa_id)); | |
65f13b50 | 1531 | /* If there is no netdev on the numa node, deletes the pmd threads |
d0cca6c3 | 1532 | * for that numa. */ |
65f13b50 AW |
1533 | if (!has_pmd_port_for_numa(dp, numa_id)) { |
1534 | dp_netdev_del_pmds_on_numa(dp, numa_id); | |
1535 | } | |
e4cfed38 | 1536 | } |
72865317 | 1537 | |
62453dad | 1538 | port_destroy(port); |
72865317 BP |
1539 | } |
1540 | ||
1541 | static void | |
4c738a8d BP |
1542 | answer_port_query(const struct dp_netdev_port *port, |
1543 | struct dpif_port *dpif_port) | |
72865317 | 1544 | { |
3efb6063 | 1545 | dpif_port->name = xstrdup(netdev_get_name(port->netdev)); |
0cbfe35d | 1546 | dpif_port->type = xstrdup(port->type); |
35303d71 | 1547 | dpif_port->port_no = port->port_no; |
72865317 BP |
1548 | } |
1549 | ||
1550 | static int | |
4e022ec0 | 1551 | dpif_netdev_port_query_by_number(const struct dpif *dpif, odp_port_t port_no, |
4c738a8d | 1552 | struct dpif_port *dpif_port) |
72865317 BP |
1553 | { |
1554 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
1555 | struct dp_netdev_port *port; | |
1556 | int error; | |
1557 | ||
e9985d6a | 1558 | ovs_mutex_lock(&dp->port_mutex); |
72865317 | 1559 | error = get_port_by_number(dp, port_no, &port); |
4afba28d | 1560 | if (!error && dpif_port) { |
4c738a8d | 1561 | answer_port_query(port, dpif_port); |
72865317 | 1562 | } |
e9985d6a | 1563 | ovs_mutex_unlock(&dp->port_mutex); |
5279f8fd | 1564 | |
72865317 BP |
1565 | return error; |
1566 | } | |
1567 | ||
1568 | static int | |
1569 | dpif_netdev_port_query_by_name(const struct dpif *dpif, const char *devname, | |
4c738a8d | 1570 | struct dpif_port *dpif_port) |
72865317 BP |
1571 | { |
1572 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
1573 | struct dp_netdev_port *port; | |
1574 | int error; | |
1575 | ||
59e6d833 | 1576 | ovs_mutex_lock(&dp->port_mutex); |
72865317 | 1577 | error = get_port_by_name(dp, devname, &port); |
4afba28d | 1578 | if (!error && dpif_port) { |
4c738a8d | 1579 | answer_port_query(port, dpif_port); |
72865317 | 1580 | } |
59e6d833 | 1581 | ovs_mutex_unlock(&dp->port_mutex); |
5279f8fd | 1582 | |
72865317 BP |
1583 | return error; |
1584 | } | |
1585 | ||
61e7deb1 BP |
1586 | static void |
1587 | dp_netdev_flow_free(struct dp_netdev_flow *flow) | |
1588 | { | |
61e7deb1 | 1589 | dp_netdev_actions_free(dp_netdev_flow_get_actions(flow)); |
61e7deb1 BP |
1590 | free(flow); |
1591 | } | |
1592 | ||
ed79f89a DDP |
1593 | static void dp_netdev_flow_unref(struct dp_netdev_flow *flow) |
1594 | { | |
1595 | if (ovs_refcount_unref_relaxed(&flow->ref_cnt) == 1) { | |
1596 | ovsrcu_postpone(dp_netdev_flow_free, flow); | |
1597 | } | |
1598 | } | |
1599 | ||
70e5ed6f JS |
1600 | static uint32_t |
1601 | dp_netdev_flow_hash(const ovs_u128 *ufid) | |
1602 | { | |
1603 | return ufid->u32[0]; | |
1604 | } | |
1605 | ||
3453b4d6 JS |
1606 | static inline struct dpcls * |
1607 | dp_netdev_pmd_lookup_dpcls(struct dp_netdev_pmd_thread *pmd, | |
1608 | odp_port_t in_port) | |
1609 | { | |
1610 | struct dpcls *cls; | |
1611 | uint32_t hash = hash_port_no(in_port); | |
1612 | CMAP_FOR_EACH_WITH_HASH (cls, node, hash, &pmd->classifiers) { | |
1613 | if (cls->in_port == in_port) { | |
1614 | /* Port classifier exists already */ | |
1615 | return cls; | |
1616 | } | |
1617 | } | |
1618 | return NULL; | |
1619 | } | |
1620 | ||
1621 | static inline struct dpcls * | |
1622 | dp_netdev_pmd_find_dpcls(struct dp_netdev_pmd_thread *pmd, | |
1623 | odp_port_t in_port) | |
1624 | OVS_REQUIRES(pmd->flow_mutex) | |
1625 | { | |
1626 | struct dpcls *cls = dp_netdev_pmd_lookup_dpcls(pmd, in_port); | |
1627 | uint32_t hash = hash_port_no(in_port); | |
1628 | ||
1629 | if (!cls) { | |
1630 | /* Create new classifier for in_port */ | |
1631 | cls = xmalloc(sizeof(*cls)); | |
1632 | dpcls_init(cls); | |
1633 | cls->in_port = in_port; | |
1634 | cmap_insert(&pmd->classifiers, &cls->node, hash); | |
1635 | VLOG_DBG("Creating dpcls %p for in_port %d", cls, in_port); | |
1636 | } | |
1637 | return cls; | |
1638 | } | |
1639 | ||
72865317 | 1640 | static void |
1c1e46ed AW |
1641 | dp_netdev_pmd_remove_flow(struct dp_netdev_pmd_thread *pmd, |
1642 | struct dp_netdev_flow *flow) | |
1643 | OVS_REQUIRES(pmd->flow_mutex) | |
72865317 | 1644 | { |
9f361d6b | 1645 | struct cmap_node *node = CONST_CAST(struct cmap_node *, &flow->node); |
3453b4d6 JS |
1646 | struct dpcls *cls; |
1647 | odp_port_t in_port = flow->flow.in_port.odp_port; | |
2c0ea78f | 1648 | |
3453b4d6 JS |
1649 | cls = dp_netdev_pmd_lookup_dpcls(pmd, in_port); |
1650 | ovs_assert(cls != NULL); | |
1651 | dpcls_remove(cls, &flow->cr); | |
1c1e46ed | 1652 | cmap_remove(&pmd->flow_table, node, dp_netdev_flow_hash(&flow->ufid)); |
9bbf1c3d | 1653 | flow->dead = true; |
ed79f89a DDP |
1654 | |
1655 | dp_netdev_flow_unref(flow); | |
72865317 BP |
1656 | } |
1657 | ||
1658 | static void | |
1c1e46ed | 1659 | dp_netdev_pmd_flow_flush(struct dp_netdev_pmd_thread *pmd) |
72865317 | 1660 | { |
78c8df12 | 1661 | struct dp_netdev_flow *netdev_flow; |
72865317 | 1662 | |
1c1e46ed AW |
1663 | ovs_mutex_lock(&pmd->flow_mutex); |
1664 | CMAP_FOR_EACH (netdev_flow, node, &pmd->flow_table) { | |
1665 | dp_netdev_pmd_remove_flow(pmd, netdev_flow); | |
72865317 | 1666 | } |
1c1e46ed | 1667 | ovs_mutex_unlock(&pmd->flow_mutex); |
72865317 BP |
1668 | } |
1669 | ||
1670 | static int | |
1671 | dpif_netdev_flow_flush(struct dpif *dpif) | |
1672 | { | |
1673 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
1c1e46ed AW |
1674 | struct dp_netdev_pmd_thread *pmd; |
1675 | ||
1676 | CMAP_FOR_EACH (pmd, node, &dp->poll_threads) { | |
1677 | dp_netdev_pmd_flow_flush(pmd); | |
1678 | } | |
5279f8fd | 1679 | |
72865317 BP |
1680 | return 0; |
1681 | } | |
1682 | ||
b0ec0f27 | 1683 | struct dp_netdev_port_state { |
e9985d6a | 1684 | struct hmap_position position; |
4c738a8d | 1685 | char *name; |
b0ec0f27 BP |
1686 | }; |
1687 | ||
1688 | static int | |
1689 | dpif_netdev_port_dump_start(const struct dpif *dpif OVS_UNUSED, void **statep) | |
1690 | { | |
1691 | *statep = xzalloc(sizeof(struct dp_netdev_port_state)); | |
1692 | return 0; | |
1693 | } | |
1694 | ||
72865317 | 1695 | static int |
b0ec0f27 | 1696 | dpif_netdev_port_dump_next(const struct dpif *dpif, void *state_, |
4c738a8d | 1697 | struct dpif_port *dpif_port) |
72865317 | 1698 | { |
b0ec0f27 | 1699 | struct dp_netdev_port_state *state = state_; |
72865317 | 1700 | struct dp_netdev *dp = get_dp_netdev(dpif); |
e9985d6a | 1701 | struct hmap_node *node; |
ff073a71 | 1702 | int retval; |
72865317 | 1703 | |
e9985d6a DDP |
1704 | ovs_mutex_lock(&dp->port_mutex); |
1705 | node = hmap_at_position(&dp->ports, &state->position); | |
ff073a71 BP |
1706 | if (node) { |
1707 | struct dp_netdev_port *port; | |
5279f8fd | 1708 | |
ff073a71 BP |
1709 | port = CONTAINER_OF(node, struct dp_netdev_port, node); |
1710 | ||
1711 | free(state->name); | |
1712 | state->name = xstrdup(netdev_get_name(port->netdev)); | |
1713 | dpif_port->name = state->name; | |
1714 | dpif_port->type = port->type; | |
35303d71 | 1715 | dpif_port->port_no = port->port_no; |
ff073a71 BP |
1716 | |
1717 | retval = 0; | |
1718 | } else { | |
1719 | retval = EOF; | |
72865317 | 1720 | } |
e9985d6a | 1721 | ovs_mutex_unlock(&dp->port_mutex); |
5279f8fd | 1722 | |
ff073a71 | 1723 | return retval; |
b0ec0f27 BP |
1724 | } |
1725 | ||
1726 | static int | |
4c738a8d | 1727 | dpif_netdev_port_dump_done(const struct dpif *dpif OVS_UNUSED, void *state_) |
b0ec0f27 | 1728 | { |
4c738a8d BP |
1729 | struct dp_netdev_port_state *state = state_; |
1730 | free(state->name); | |
b0ec0f27 BP |
1731 | free(state); |
1732 | return 0; | |
72865317 BP |
1733 | } |
1734 | ||
1735 | static int | |
67a4917b | 1736 | dpif_netdev_port_poll(const struct dpif *dpif_, char **devnamep OVS_UNUSED) |
72865317 BP |
1737 | { |
1738 | struct dpif_netdev *dpif = dpif_netdev_cast(dpif_); | |
d33ed218 | 1739 | uint64_t new_port_seq; |
5279f8fd BP |
1740 | int error; |
1741 | ||
d33ed218 BP |
1742 | new_port_seq = seq_read(dpif->dp->port_seq); |
1743 | if (dpif->last_port_seq != new_port_seq) { | |
1744 | dpif->last_port_seq = new_port_seq; | |
5279f8fd | 1745 | error = ENOBUFS; |
72865317 | 1746 | } else { |
5279f8fd | 1747 | error = EAGAIN; |
72865317 | 1748 | } |
5279f8fd BP |
1749 | |
1750 | return error; | |
72865317 BP |
1751 | } |
1752 | ||
1753 | static void | |
1754 | dpif_netdev_port_poll_wait(const struct dpif *dpif_) | |
1755 | { | |
1756 | struct dpif_netdev *dpif = dpif_netdev_cast(dpif_); | |
5279f8fd | 1757 | |
d33ed218 | 1758 | seq_wait(dpif->dp->port_seq, dpif->last_port_seq); |
8a4e3a85 BP |
1759 | } |
1760 | ||
1761 | static struct dp_netdev_flow * | |
0de8783a | 1762 | dp_netdev_flow_cast(const struct dpcls_rule *cr) |
8a4e3a85 BP |
1763 | { |
1764 | return cr ? CONTAINER_OF(cr, struct dp_netdev_flow, cr) : NULL; | |
72865317 BP |
1765 | } |
1766 | ||
9bbf1c3d DDP |
1767 | static bool dp_netdev_flow_ref(struct dp_netdev_flow *flow) |
1768 | { | |
1769 | return ovs_refcount_try_ref_rcu(&flow->ref_cnt); | |
1770 | } | |
1771 | ||
79df317f DDP |
1772 | /* netdev_flow_key utilities. |
1773 | * | |
1774 | * netdev_flow_key is basically a miniflow. We use these functions | |
1775 | * (netdev_flow_key_clone, netdev_flow_key_equal, ...) instead of the miniflow | |
1776 | * functions (miniflow_clone_inline, miniflow_equal, ...), because: | |
1777 | * | |
1778 | * - Since we are dealing exclusively with miniflows created by | |
1779 | * miniflow_extract(), if the map is different the miniflow is different. | |
1780 | * Therefore we can be faster by comparing the map and the miniflow in a | |
1781 | * single memcmp(). | |
5fcff47b | 1782 | * - These functions can be inlined by the compiler. */ |
79df317f | 1783 | |
361d808d | 1784 | /* Given the number of bits set in miniflow's maps, returns the size of the |
caeb4906 | 1785 | * 'netdev_flow_key.mf' */ |
361d808d JR |
1786 | static inline size_t |
1787 | netdev_flow_key_size(size_t flow_u64s) | |
79df317f | 1788 | { |
361d808d | 1789 | return sizeof(struct miniflow) + MINIFLOW_VALUES_SIZE(flow_u64s); |
79df317f DDP |
1790 | } |
1791 | ||
79df317f DDP |
1792 | static inline bool |
1793 | netdev_flow_key_equal(const struct netdev_flow_key *a, | |
0de8783a JR |
1794 | const struct netdev_flow_key *b) |
1795 | { | |
caeb4906 JR |
1796 | /* 'b->len' may be not set yet. */ |
1797 | return a->hash == b->hash && !memcmp(&a->mf, &b->mf, a->len); | |
0de8783a JR |
1798 | } |
1799 | ||
1800 | /* Used to compare 'netdev_flow_key' in the exact match cache to a miniflow. | |
d79a39fe | 1801 | * The maps are compared bitwise, so both 'key->mf' and 'mf' must have been |
0de8783a JR |
1802 | * generated by miniflow_extract. */ |
1803 | static inline bool | |
1804 | netdev_flow_key_equal_mf(const struct netdev_flow_key *key, | |
1805 | const struct miniflow *mf) | |
79df317f | 1806 | { |
caeb4906 | 1807 | return !memcmp(&key->mf, mf, key->len); |
79df317f DDP |
1808 | } |
1809 | ||
1810 | static inline void | |
1811 | netdev_flow_key_clone(struct netdev_flow_key *dst, | |
0de8783a JR |
1812 | const struct netdev_flow_key *src) |
1813 | { | |
caeb4906 JR |
1814 | memcpy(dst, src, |
1815 | offsetof(struct netdev_flow_key, mf) + src->len); | |
0de8783a JR |
1816 | } |
1817 | ||
1818 | /* Slow. */ | |
1819 | static void | |
1820 | netdev_flow_key_from_flow(struct netdev_flow_key *dst, | |
1821 | const struct flow *src) | |
1822 | { | |
cf62fa4c | 1823 | struct dp_packet packet; |
0de8783a | 1824 | uint64_t buf_stub[512 / 8]; |
0de8783a | 1825 | |
cf62fa4c PS |
1826 | dp_packet_use_stub(&packet, buf_stub, sizeof buf_stub); |
1827 | pkt_metadata_from_flow(&packet.md, src); | |
0de8783a | 1828 | flow_compose(&packet, src); |
cf62fa4c PS |
1829 | miniflow_extract(&packet, &dst->mf); |
1830 | dp_packet_uninit(&packet); | |
0de8783a | 1831 | |
361d808d | 1832 | dst->len = netdev_flow_key_size(miniflow_n_values(&dst->mf)); |
0de8783a JR |
1833 | dst->hash = 0; /* Not computed yet. */ |
1834 | } | |
1835 | ||
1836 | /* Initialize a netdev_flow_key 'mask' from 'match'. */ | |
1837 | static inline void | |
1838 | netdev_flow_mask_init(struct netdev_flow_key *mask, | |
1839 | const struct match *match) | |
1840 | { | |
09b0fa9c | 1841 | uint64_t *dst = miniflow_values(&mask->mf); |
5fcff47b | 1842 | struct flowmap fmap; |
0de8783a | 1843 | uint32_t hash = 0; |
5fcff47b | 1844 | size_t idx; |
0de8783a JR |
1845 | |
1846 | /* Only check masks that make sense for the flow. */ | |
5fcff47b JR |
1847 | flow_wc_map(&match->flow, &fmap); |
1848 | flowmap_init(&mask->mf.map); | |
0de8783a | 1849 | |
5fcff47b JR |
1850 | FLOWMAP_FOR_EACH_INDEX(idx, fmap) { |
1851 | uint64_t mask_u64 = flow_u64_value(&match->wc.masks, idx); | |
0de8783a | 1852 | |
5fcff47b JR |
1853 | if (mask_u64) { |
1854 | flowmap_set(&mask->mf.map, idx, 1); | |
1855 | *dst++ = mask_u64; | |
1856 | hash = hash_add64(hash, mask_u64); | |
0de8783a | 1857 | } |
0de8783a JR |
1858 | } |
1859 | ||
5fcff47b | 1860 | map_t map; |
0de8783a | 1861 | |
5fcff47b JR |
1862 | FLOWMAP_FOR_EACH_MAP (map, mask->mf.map) { |
1863 | hash = hash_add64(hash, map); | |
1864 | } | |
0de8783a | 1865 | |
5fcff47b | 1866 | size_t n = dst - miniflow_get_values(&mask->mf); |
0de8783a | 1867 | |
d70e8c28 | 1868 | mask->hash = hash_finish(hash, n * 8); |
0de8783a JR |
1869 | mask->len = netdev_flow_key_size(n); |
1870 | } | |
1871 | ||
361d808d | 1872 | /* Initializes 'dst' as a copy of 'flow' masked with 'mask'. */ |
0de8783a JR |
1873 | static inline void |
1874 | netdev_flow_key_init_masked(struct netdev_flow_key *dst, | |
1875 | const struct flow *flow, | |
1876 | const struct netdev_flow_key *mask) | |
79df317f | 1877 | { |
09b0fa9c JR |
1878 | uint64_t *dst_u64 = miniflow_values(&dst->mf); |
1879 | const uint64_t *mask_u64 = miniflow_get_values(&mask->mf); | |
0de8783a | 1880 | uint32_t hash = 0; |
d70e8c28 | 1881 | uint64_t value; |
0de8783a JR |
1882 | |
1883 | dst->len = mask->len; | |
361d808d | 1884 | dst->mf = mask->mf; /* Copy maps. */ |
0de8783a | 1885 | |
5fcff47b | 1886 | FLOW_FOR_EACH_IN_MAPS(value, flow, mask->mf.map) { |
d70e8c28 JR |
1887 | *dst_u64 = value & *mask_u64++; |
1888 | hash = hash_add64(hash, *dst_u64++); | |
0de8783a | 1889 | } |
09b0fa9c JR |
1890 | dst->hash = hash_finish(hash, |
1891 | (dst_u64 - miniflow_get_values(&dst->mf)) * 8); | |
0de8783a JR |
1892 | } |
1893 | ||
5fcff47b JR |
1894 | /* Iterate through netdev_flow_key TNL u64 values specified by 'FLOWMAP'. */ |
1895 | #define NETDEV_FLOW_KEY_FOR_EACH_IN_FLOWMAP(VALUE, KEY, FLOWMAP) \ | |
1896 | MINIFLOW_FOR_EACH_IN_FLOWMAP(VALUE, &(KEY)->mf, FLOWMAP) | |
0de8783a JR |
1897 | |
1898 | /* Returns a hash value for the bits of 'key' where there are 1-bits in | |
1899 | * 'mask'. */ | |
1900 | static inline uint32_t | |
1901 | netdev_flow_key_hash_in_mask(const struct netdev_flow_key *key, | |
1902 | const struct netdev_flow_key *mask) | |
1903 | { | |
09b0fa9c | 1904 | const uint64_t *p = miniflow_get_values(&mask->mf); |
0de8783a | 1905 | uint32_t hash = 0; |
5fcff47b | 1906 | uint64_t value; |
0de8783a | 1907 | |
5fcff47b JR |
1908 | NETDEV_FLOW_KEY_FOR_EACH_IN_FLOWMAP(value, key, mask->mf.map) { |
1909 | hash = hash_add64(hash, value & *p++); | |
0de8783a JR |
1910 | } |
1911 | ||
09b0fa9c | 1912 | return hash_finish(hash, (p - miniflow_get_values(&mask->mf)) * 8); |
79df317f DDP |
1913 | } |
1914 | ||
9bbf1c3d DDP |
1915 | static inline bool |
1916 | emc_entry_alive(struct emc_entry *ce) | |
1917 | { | |
1918 | return ce->flow && !ce->flow->dead; | |
1919 | } | |
1920 | ||
1921 | static void | |
1922 | emc_clear_entry(struct emc_entry *ce) | |
1923 | { | |
1924 | if (ce->flow) { | |
1925 | dp_netdev_flow_unref(ce->flow); | |
1926 | ce->flow = NULL; | |
1927 | } | |
1928 | } | |
1929 | ||
1930 | static inline void | |
1931 | emc_change_entry(struct emc_entry *ce, struct dp_netdev_flow *flow, | |
0de8783a | 1932 | const struct netdev_flow_key *key) |
9bbf1c3d DDP |
1933 | { |
1934 | if (ce->flow != flow) { | |
1935 | if (ce->flow) { | |
1936 | dp_netdev_flow_unref(ce->flow); | |
1937 | } | |
1938 | ||
1939 | if (dp_netdev_flow_ref(flow)) { | |
1940 | ce->flow = flow; | |
1941 | } else { | |
1942 | ce->flow = NULL; | |
1943 | } | |
1944 | } | |
0de8783a JR |
1945 | if (key) { |
1946 | netdev_flow_key_clone(&ce->key, key); | |
9bbf1c3d DDP |
1947 | } |
1948 | } | |
1949 | ||
1950 | static inline void | |
0de8783a | 1951 | emc_insert(struct emc_cache *cache, const struct netdev_flow_key *key, |
9bbf1c3d DDP |
1952 | struct dp_netdev_flow *flow) |
1953 | { | |
1954 | struct emc_entry *to_be_replaced = NULL; | |
1955 | struct emc_entry *current_entry; | |
1956 | ||
0de8783a JR |
1957 | EMC_FOR_EACH_POS_WITH_HASH(cache, current_entry, key->hash) { |
1958 | if (netdev_flow_key_equal(¤t_entry->key, key)) { | |
9bbf1c3d | 1959 | /* We found the entry with the 'mf' miniflow */ |
0de8783a | 1960 | emc_change_entry(current_entry, flow, NULL); |
9bbf1c3d DDP |
1961 | return; |
1962 | } | |
1963 | ||
1964 | /* Replacement policy: put the flow in an empty (not alive) entry, or | |
1965 | * in the first entry where it can be */ | |
1966 | if (!to_be_replaced | |
1967 | || (emc_entry_alive(to_be_replaced) | |
1968 | && !emc_entry_alive(current_entry)) | |
0de8783a | 1969 | || current_entry->key.hash < to_be_replaced->key.hash) { |
9bbf1c3d DDP |
1970 | to_be_replaced = current_entry; |
1971 | } | |
1972 | } | |
1973 | /* We didn't find the miniflow in the cache. | |
1974 | * The 'to_be_replaced' entry is where the new flow will be stored */ | |
1975 | ||
0de8783a | 1976 | emc_change_entry(to_be_replaced, flow, key); |
9bbf1c3d DDP |
1977 | } |
1978 | ||
1979 | static inline struct dp_netdev_flow * | |
0de8783a | 1980 | emc_lookup(struct emc_cache *cache, const struct netdev_flow_key *key) |
9bbf1c3d DDP |
1981 | { |
1982 | struct emc_entry *current_entry; | |
1983 | ||
0de8783a JR |
1984 | EMC_FOR_EACH_POS_WITH_HASH(cache, current_entry, key->hash) { |
1985 | if (current_entry->key.hash == key->hash | |
1986 | && emc_entry_alive(current_entry) | |
1987 | && netdev_flow_key_equal_mf(¤t_entry->key, &key->mf)) { | |
9bbf1c3d | 1988 | |
0de8783a | 1989 | /* We found the entry with the 'key->mf' miniflow */ |
9bbf1c3d DDP |
1990 | return current_entry->flow; |
1991 | } | |
1992 | } | |
1993 | ||
1994 | return NULL; | |
1995 | } | |
1996 | ||
72865317 | 1997 | static struct dp_netdev_flow * |
3453b4d6 JS |
1998 | dp_netdev_pmd_lookup_flow(struct dp_netdev_pmd_thread *pmd, |
1999 | const struct netdev_flow_key *key, | |
2000 | int *lookup_num_p) | |
2c0ea78f | 2001 | { |
3453b4d6 | 2002 | struct dpcls *cls; |
0de8783a | 2003 | struct dpcls_rule *rule; |
3453b4d6 JS |
2004 | odp_port_t in_port = u32_to_odp(MINIFLOW_GET_U32(&key->mf, in_port)); |
2005 | struct dp_netdev_flow *netdev_flow = NULL; | |
2c0ea78f | 2006 | |
3453b4d6 JS |
2007 | cls = dp_netdev_pmd_lookup_dpcls(pmd, in_port); |
2008 | if (OVS_LIKELY(cls)) { | |
2009 | dpcls_lookup(cls, key, &rule, 1, lookup_num_p); | |
2010 | netdev_flow = dp_netdev_flow_cast(rule); | |
2011 | } | |
8a4e3a85 | 2012 | return netdev_flow; |
2c0ea78f GS |
2013 | } |
2014 | ||
2015 | static struct dp_netdev_flow * | |
1c1e46ed AW |
2016 | dp_netdev_pmd_find_flow(const struct dp_netdev_pmd_thread *pmd, |
2017 | const ovs_u128 *ufidp, const struct nlattr *key, | |
2018 | size_t key_len) | |
72865317 | 2019 | { |
1763b4b8 | 2020 | struct dp_netdev_flow *netdev_flow; |
70e5ed6f JS |
2021 | struct flow flow; |
2022 | ovs_u128 ufid; | |
2023 | ||
2024 | /* If a UFID is not provided, determine one based on the key. */ | |
2025 | if (!ufidp && key && key_len | |
2026 | && !dpif_netdev_flow_from_nlattrs(key, key_len, &flow)) { | |
1c1e46ed | 2027 | dpif_flow_hash(pmd->dp->dpif, &flow, sizeof flow, &ufid); |
70e5ed6f JS |
2028 | ufidp = &ufid; |
2029 | } | |
72865317 | 2030 | |
70e5ed6f JS |
2031 | if (ufidp) { |
2032 | CMAP_FOR_EACH_WITH_HASH (netdev_flow, node, dp_netdev_flow_hash(ufidp), | |
1c1e46ed | 2033 | &pmd->flow_table) { |
2ff8484b | 2034 | if (ovs_u128_equals(netdev_flow->ufid, *ufidp)) { |
70e5ed6f JS |
2035 | return netdev_flow; |
2036 | } | |
72865317 BP |
2037 | } |
2038 | } | |
8a4e3a85 | 2039 | |
72865317 BP |
2040 | return NULL; |
2041 | } | |
2042 | ||
2043 | static void | |
eb94da30 | 2044 | get_dpif_flow_stats(const struct dp_netdev_flow *netdev_flow_, |
1763b4b8 | 2045 | struct dpif_flow_stats *stats) |
feebdea2 | 2046 | { |
eb94da30 DDP |
2047 | struct dp_netdev_flow *netdev_flow; |
2048 | unsigned long long n; | |
2049 | long long used; | |
2050 | uint16_t flags; | |
2051 | ||
2052 | netdev_flow = CONST_CAST(struct dp_netdev_flow *, netdev_flow_); | |
2053 | ||
2054 | atomic_read_relaxed(&netdev_flow->stats.packet_count, &n); | |
2055 | stats->n_packets = n; | |
2056 | atomic_read_relaxed(&netdev_flow->stats.byte_count, &n); | |
2057 | stats->n_bytes = n; | |
2058 | atomic_read_relaxed(&netdev_flow->stats.used, &used); | |
2059 | stats->used = used; | |
2060 | atomic_read_relaxed(&netdev_flow->stats.tcp_flags, &flags); | |
2061 | stats->tcp_flags = flags; | |
72865317 BP |
2062 | } |
2063 | ||
7af12bd7 JS |
2064 | /* Converts to the dpif_flow format, using 'key_buf' and 'mask_buf' for |
2065 | * storing the netlink-formatted key/mask. 'key_buf' may be the same as | |
2066 | * 'mask_buf'. Actions will be returned without copying, by relying on RCU to | |
2067 | * protect them. */ | |
6fe09f8c | 2068 | static void |
70e5ed6f | 2069 | dp_netdev_flow_to_dpif_flow(const struct dp_netdev_flow *netdev_flow, |
7af12bd7 | 2070 | struct ofpbuf *key_buf, struct ofpbuf *mask_buf, |
64bb477f | 2071 | struct dpif_flow *flow, bool terse) |
6fe09f8c | 2072 | { |
64bb477f JS |
2073 | if (terse) { |
2074 | memset(flow, 0, sizeof *flow); | |
2075 | } else { | |
2076 | struct flow_wildcards wc; | |
2077 | struct dp_netdev_actions *actions; | |
2078 | size_t offset; | |
5262eea1 JG |
2079 | struct odp_flow_key_parms odp_parms = { |
2080 | .flow = &netdev_flow->flow, | |
2081 | .mask = &wc.masks, | |
2494ccd7 | 2082 | .support = dp_netdev_support, |
5262eea1 | 2083 | }; |
64bb477f JS |
2084 | |
2085 | miniflow_expand(&netdev_flow->cr.mask->mf, &wc.masks); | |
2086 | ||
2087 | /* Key */ | |
6fd6ed71 | 2088 | offset = key_buf->size; |
64bb477f | 2089 | flow->key = ofpbuf_tail(key_buf); |
5262eea1 | 2090 | odp_flow_key_from_flow(&odp_parms, key_buf); |
6fd6ed71 | 2091 | flow->key_len = key_buf->size - offset; |
64bb477f JS |
2092 | |
2093 | /* Mask */ | |
6fd6ed71 | 2094 | offset = mask_buf->size; |
64bb477f | 2095 | flow->mask = ofpbuf_tail(mask_buf); |
ec1f6f32 | 2096 | odp_parms.key_buf = key_buf; |
5262eea1 | 2097 | odp_flow_key_from_mask(&odp_parms, mask_buf); |
6fd6ed71 | 2098 | flow->mask_len = mask_buf->size - offset; |
64bb477f JS |
2099 | |
2100 | /* Actions */ | |
2101 | actions = dp_netdev_flow_get_actions(netdev_flow); | |
2102 | flow->actions = actions->actions; | |
2103 | flow->actions_len = actions->size; | |
2104 | } | |
6fe09f8c | 2105 | |
70e5ed6f JS |
2106 | flow->ufid = netdev_flow->ufid; |
2107 | flow->ufid_present = true; | |
1c1e46ed | 2108 | flow->pmd_id = netdev_flow->pmd_id; |
6fe09f8c JS |
2109 | get_dpif_flow_stats(netdev_flow, &flow->stats); |
2110 | } | |
2111 | ||
36956a7d | 2112 | static int |
8c301900 JR |
2113 | dpif_netdev_mask_from_nlattrs(const struct nlattr *key, uint32_t key_len, |
2114 | const struct nlattr *mask_key, | |
2115 | uint32_t mask_key_len, const struct flow *flow, | |
9f861c91 | 2116 | struct flow_wildcards *wc) |
8c301900 | 2117 | { |
ca8d3442 DDP |
2118 | enum odp_key_fitness fitness; |
2119 | ||
8d8ab6c2 | 2120 | fitness = odp_flow_key_to_mask(mask_key, mask_key_len, wc, flow); |
ca8d3442 DDP |
2121 | if (fitness) { |
2122 | /* This should not happen: it indicates that | |
2123 | * odp_flow_key_from_mask() and odp_flow_key_to_mask() | |
2124 | * disagree on the acceptable form of a mask. Log the problem | |
2125 | * as an error, with enough details to enable debugging. */ | |
2126 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
2127 | ||
2128 | if (!VLOG_DROP_ERR(&rl)) { | |
2129 | struct ds s; | |
8c301900 | 2130 | |
ca8d3442 DDP |
2131 | ds_init(&s); |
2132 | odp_flow_format(key, key_len, mask_key, mask_key_len, NULL, &s, | |
2133 | true); | |
2134 | VLOG_ERR("internal error parsing flow mask %s (%s)", | |
2135 | ds_cstr(&s), odp_key_fitness_to_string(fitness)); | |
2136 | ds_destroy(&s); | |
8c301900 | 2137 | } |
ca8d3442 DDP |
2138 | |
2139 | return EINVAL; | |
8c301900 JR |
2140 | } |
2141 | ||
2142 | return 0; | |
2143 | } | |
2144 | ||
2145 | static int | |
2146 | dpif_netdev_flow_from_nlattrs(const struct nlattr *key, uint32_t key_len, | |
2147 | struct flow *flow) | |
36956a7d | 2148 | { |
586ddea5 BP |
2149 | odp_port_t in_port; |
2150 | ||
8d8ab6c2 | 2151 | if (odp_flow_key_to_flow(key, key_len, flow)) { |
36956a7d | 2152 | /* This should not happen: it indicates that odp_flow_key_from_flow() |
8c301900 JR |
2153 | * and odp_flow_key_to_flow() disagree on the acceptable form of a |
2154 | * flow. Log the problem as an error, with enough details to enable | |
2155 | * debugging. */ | |
36956a7d BP |
2156 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
2157 | ||
2158 | if (!VLOG_DROP_ERR(&rl)) { | |
2159 | struct ds s; | |
2160 | ||
2161 | ds_init(&s); | |
8c301900 | 2162 | odp_flow_format(key, key_len, NULL, 0, NULL, &s, true); |
36956a7d BP |
2163 | VLOG_ERR("internal error parsing flow key %s", ds_cstr(&s)); |
2164 | ds_destroy(&s); | |
2165 | } | |
2166 | ||
2167 | return EINVAL; | |
2168 | } | |
2169 | ||
586ddea5 BP |
2170 | in_port = flow->in_port.odp_port; |
2171 | if (!is_valid_port_number(in_port) && in_port != ODPP_NONE) { | |
18886b60 BP |
2172 | return EINVAL; |
2173 | } | |
2174 | ||
5cf3edb3 | 2175 | if (flow->ct_state & DP_NETDEV_CS_UNSUPPORTED_MASK) { |
07659514 JS |
2176 | return EINVAL; |
2177 | } | |
2178 | ||
36956a7d BP |
2179 | return 0; |
2180 | } | |
2181 | ||
72865317 | 2182 | static int |
6fe09f8c | 2183 | dpif_netdev_flow_get(const struct dpif *dpif, const struct dpif_flow_get *get) |
72865317 BP |
2184 | { |
2185 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
1763b4b8 | 2186 | struct dp_netdev_flow *netdev_flow; |
1c1e46ed | 2187 | struct dp_netdev_pmd_thread *pmd; |
c673049c IM |
2188 | struct hmapx to_find = HMAPX_INITIALIZER(&to_find); |
2189 | struct hmapx_node *node; | |
2190 | int error = EINVAL; | |
2191 | ||
2192 | if (get->pmd_id == PMD_ID_NULL) { | |
2193 | CMAP_FOR_EACH (pmd, node, &dp->poll_threads) { | |
2194 | if (dp_netdev_pmd_try_ref(pmd) && !hmapx_add(&to_find, pmd)) { | |
2195 | dp_netdev_pmd_unref(pmd); | |
2196 | } | |
2197 | } | |
2198 | } else { | |
2199 | pmd = dp_netdev_get_pmd(dp, get->pmd_id); | |
2200 | if (!pmd) { | |
2201 | goto out; | |
2202 | } | |
2203 | hmapx_add(&to_find, pmd); | |
1c1e46ed AW |
2204 | } |
2205 | ||
c673049c IM |
2206 | if (!hmapx_count(&to_find)) { |
2207 | goto out; | |
72865317 | 2208 | } |
1c1e46ed | 2209 | |
c673049c IM |
2210 | HMAPX_FOR_EACH (node, &to_find) { |
2211 | pmd = (struct dp_netdev_pmd_thread *) node->data; | |
2212 | netdev_flow = dp_netdev_pmd_find_flow(pmd, get->ufid, get->key, | |
2213 | get->key_len); | |
2214 | if (netdev_flow) { | |
2215 | dp_netdev_flow_to_dpif_flow(netdev_flow, get->buffer, get->buffer, | |
2216 | get->flow, false); | |
2217 | error = 0; | |
2218 | break; | |
2219 | } else { | |
2220 | error = ENOENT; | |
2221 | } | |
2222 | } | |
bc4a05c6 | 2223 | |
c673049c IM |
2224 | HMAPX_FOR_EACH (node, &to_find) { |
2225 | pmd = (struct dp_netdev_pmd_thread *) node->data; | |
2226 | dp_netdev_pmd_unref(pmd); | |
2227 | } | |
2228 | out: | |
2229 | hmapx_destroy(&to_find); | |
5279f8fd | 2230 | return error; |
72865317 BP |
2231 | } |
2232 | ||
0de8783a | 2233 | static struct dp_netdev_flow * |
1c1e46ed AW |
2234 | dp_netdev_flow_add(struct dp_netdev_pmd_thread *pmd, |
2235 | struct match *match, const ovs_u128 *ufid, | |
ae2ceebd | 2236 | const struct nlattr *actions, size_t actions_len) |
1c1e46ed | 2237 | OVS_REQUIRES(pmd->flow_mutex) |
72865317 | 2238 | { |
0de8783a JR |
2239 | struct dp_netdev_flow *flow; |
2240 | struct netdev_flow_key mask; | |
3453b4d6 JS |
2241 | struct dpcls *cls; |
2242 | odp_port_t in_port = match->flow.in_port.odp_port; | |
ed79f89a | 2243 | |
0de8783a JR |
2244 | netdev_flow_mask_init(&mask, match); |
2245 | /* Make sure wc does not have metadata. */ | |
5fcff47b JR |
2246 | ovs_assert(!FLOWMAP_HAS_FIELD(&mask.mf.map, metadata) |
2247 | && !FLOWMAP_HAS_FIELD(&mask.mf.map, regs)); | |
679ba04c | 2248 | |
0de8783a | 2249 | /* Do not allocate extra space. */ |
caeb4906 | 2250 | flow = xmalloc(sizeof *flow - sizeof flow->cr.flow.mf + mask.len); |
1c1e46ed | 2251 | memset(&flow->stats, 0, sizeof flow->stats); |
0de8783a | 2252 | flow->dead = false; |
11e5cf1f | 2253 | flow->batch = NULL; |
bd5131ba | 2254 | *CONST_CAST(unsigned *, &flow->pmd_id) = pmd->core_id; |
0de8783a | 2255 | *CONST_CAST(struct flow *, &flow->flow) = match->flow; |
70e5ed6f | 2256 | *CONST_CAST(ovs_u128 *, &flow->ufid) = *ufid; |
0de8783a | 2257 | ovs_refcount_init(&flow->ref_cnt); |
0de8783a | 2258 | ovsrcu_set(&flow->actions, dp_netdev_actions_create(actions, actions_len)); |
2c0ea78f | 2259 | |
0de8783a | 2260 | netdev_flow_key_init_masked(&flow->cr.flow, &match->flow, &mask); |
3453b4d6 JS |
2261 | |
2262 | /* Select dpcls for in_port. Relies on in_port to be exact match */ | |
2263 | ovs_assert(match->wc.masks.in_port.odp_port == ODP_PORT_C(UINT32_MAX)); | |
2264 | cls = dp_netdev_pmd_find_dpcls(pmd, in_port); | |
2265 | dpcls_insert(cls, &flow->cr, &mask); | |
72865317 | 2266 | |
4c75aaab EJ |
2267 | cmap_insert(&pmd->flow_table, CONST_CAST(struct cmap_node *, &flow->node), |
2268 | dp_netdev_flow_hash(&flow->ufid)); | |
2269 | ||
623540e4 EJ |
2270 | if (OVS_UNLIKELY(VLOG_IS_DBG_ENABLED())) { |
2271 | struct ds ds = DS_EMPTY_INITIALIZER; | |
9044f2c1 JG |
2272 | struct ofpbuf key_buf, mask_buf; |
2273 | struct odp_flow_key_parms odp_parms = { | |
2274 | .flow = &match->flow, | |
2275 | .mask = &match->wc.masks, | |
2276 | .support = dp_netdev_support, | |
2277 | }; | |
2278 | ||
2279 | ofpbuf_init(&key_buf, 0); | |
2280 | ofpbuf_init(&mask_buf, 0); | |
623540e4 | 2281 | |
9044f2c1 JG |
2282 | odp_flow_key_from_flow(&odp_parms, &key_buf); |
2283 | odp_parms.key_buf = &key_buf; | |
2284 | odp_flow_key_from_mask(&odp_parms, &mask_buf); | |
0de8783a | 2285 | |
623540e4 | 2286 | ds_put_cstr(&ds, "flow_add: "); |
70e5ed6f JS |
2287 | odp_format_ufid(ufid, &ds); |
2288 | ds_put_cstr(&ds, " "); | |
9044f2c1 JG |
2289 | odp_flow_format(key_buf.data, key_buf.size, |
2290 | mask_buf.data, mask_buf.size, | |
2291 | NULL, &ds, false); | |
623540e4 EJ |
2292 | ds_put_cstr(&ds, ", actions:"); |
2293 | format_odp_actions(&ds, actions, actions_len); | |
2294 | ||
2295 | VLOG_DBG_RL(&upcall_rl, "%s", ds_cstr(&ds)); | |
2296 | ||
9044f2c1 JG |
2297 | ofpbuf_uninit(&key_buf); |
2298 | ofpbuf_uninit(&mask_buf); | |
623540e4 EJ |
2299 | ds_destroy(&ds); |
2300 | } | |
2301 | ||
0de8783a | 2302 | return flow; |
72865317 BP |
2303 | } |
2304 | ||
72865317 | 2305 | static int |
89625d1e | 2306 | dpif_netdev_flow_put(struct dpif *dpif, const struct dpif_flow_put *put) |
72865317 BP |
2307 | { |
2308 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
1763b4b8 | 2309 | struct dp_netdev_flow *netdev_flow; |
0de8783a | 2310 | struct netdev_flow_key key; |
1c1e46ed | 2311 | struct dp_netdev_pmd_thread *pmd; |
ae2ceebd | 2312 | struct match match; |
70e5ed6f | 2313 | ovs_u128 ufid; |
bd5131ba DDP |
2314 | unsigned pmd_id = put->pmd_id == PMD_ID_NULL |
2315 | ? NON_PMD_CORE_ID : put->pmd_id; | |
36956a7d BP |
2316 | int error; |
2317 | ||
ae2ceebd | 2318 | error = dpif_netdev_flow_from_nlattrs(put->key, put->key_len, &match.flow); |
8c301900 JR |
2319 | if (error) { |
2320 | return error; | |
2321 | } | |
2322 | error = dpif_netdev_mask_from_nlattrs(put->key, put->key_len, | |
2323 | put->mask, put->mask_len, | |
9f861c91 | 2324 | &match.flow, &match.wc); |
36956a7d BP |
2325 | if (error) { |
2326 | return error; | |
2327 | } | |
0de8783a | 2328 | |
1c1e46ed AW |
2329 | pmd = dp_netdev_get_pmd(dp, pmd_id); |
2330 | if (!pmd) { | |
2331 | return EINVAL; | |
2332 | } | |
2333 | ||
0de8783a JR |
2334 | /* Must produce a netdev_flow_key for lookup. |
2335 | * This interface is no longer performance critical, since it is not used | |
2336 | * for upcall processing any more. */ | |
2337 | netdev_flow_key_from_flow(&key, &match.flow); | |
72865317 | 2338 | |
70e5ed6f JS |
2339 | if (put->ufid) { |
2340 | ufid = *put->ufid; | |
2341 | } else { | |
2342 | dpif_flow_hash(dpif, &match.flow, sizeof match.flow, &ufid); | |
2343 | } | |
2344 | ||
1c1e46ed | 2345 | ovs_mutex_lock(&pmd->flow_mutex); |
3453b4d6 | 2346 | netdev_flow = dp_netdev_pmd_lookup_flow(pmd, &key, NULL); |
1763b4b8 | 2347 | if (!netdev_flow) { |
89625d1e | 2348 | if (put->flags & DPIF_FP_CREATE) { |
1c1e46ed | 2349 | if (cmap_count(&pmd->flow_table) < MAX_FLOWS) { |
89625d1e BP |
2350 | if (put->stats) { |
2351 | memset(put->stats, 0, sizeof *put->stats); | |
feebdea2 | 2352 | } |
1c1e46ed | 2353 | dp_netdev_flow_add(pmd, &match, &ufid, put->actions, |
70e5ed6f | 2354 | put->actions_len); |
0de8783a | 2355 | error = 0; |
72865317 | 2356 | } else { |
5279f8fd | 2357 | error = EFBIG; |
72865317 BP |
2358 | } |
2359 | } else { | |
5279f8fd | 2360 | error = ENOENT; |
72865317 BP |
2361 | } |
2362 | } else { | |
2c0ea78f | 2363 | if (put->flags & DPIF_FP_MODIFY |
ae2ceebd | 2364 | && flow_equal(&match.flow, &netdev_flow->flow)) { |
8a4e3a85 BP |
2365 | struct dp_netdev_actions *new_actions; |
2366 | struct dp_netdev_actions *old_actions; | |
2367 | ||
2368 | new_actions = dp_netdev_actions_create(put->actions, | |
2369 | put->actions_len); | |
2370 | ||
61e7deb1 BP |
2371 | old_actions = dp_netdev_flow_get_actions(netdev_flow); |
2372 | ovsrcu_set(&netdev_flow->actions, new_actions); | |
679ba04c | 2373 | |
a84cb64a BP |
2374 | if (put->stats) { |
2375 | get_dpif_flow_stats(netdev_flow, put->stats); | |
2376 | } | |
2377 | if (put->flags & DPIF_FP_ZERO_STATS) { | |
97447f55 DDP |
2378 | /* XXX: The userspace datapath uses thread local statistics |
2379 | * (for flows), which should be updated only by the owning | |
2380 | * thread. Since we cannot write on stats memory here, | |
2381 | * we choose not to support this flag. Please note: | |
2382 | * - This feature is currently used only by dpctl commands with | |
2383 | * option --clear. | |
2384 | * - Should the need arise, this operation can be implemented | |
2385 | * by keeping a base value (to be update here) for each | |
2386 | * counter, and subtracting it before outputting the stats */ | |
2387 | error = EOPNOTSUPP; | |
72865317 | 2388 | } |
8a4e3a85 | 2389 | |
61e7deb1 | 2390 | ovsrcu_postpone(dp_netdev_actions_free, old_actions); |
2c0ea78f | 2391 | } else if (put->flags & DPIF_FP_CREATE) { |
5279f8fd | 2392 | error = EEXIST; |
2c0ea78f GS |
2393 | } else { |
2394 | /* Overlapping flow. */ | |
2395 | error = EINVAL; | |
72865317 BP |
2396 | } |
2397 | } | |
1c1e46ed AW |
2398 | ovs_mutex_unlock(&pmd->flow_mutex); |
2399 | dp_netdev_pmd_unref(pmd); | |
5279f8fd BP |
2400 | |
2401 | return error; | |
72865317 BP |
2402 | } |
2403 | ||
72865317 | 2404 | static int |
b99d3cee | 2405 | dpif_netdev_flow_del(struct dpif *dpif, const struct dpif_flow_del *del) |
72865317 BP |
2406 | { |
2407 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
1763b4b8 | 2408 | struct dp_netdev_flow *netdev_flow; |
1c1e46ed | 2409 | struct dp_netdev_pmd_thread *pmd; |
bd5131ba DDP |
2410 | unsigned pmd_id = del->pmd_id == PMD_ID_NULL |
2411 | ? NON_PMD_CORE_ID : del->pmd_id; | |
70e5ed6f | 2412 | int error = 0; |
72865317 | 2413 | |
1c1e46ed AW |
2414 | pmd = dp_netdev_get_pmd(dp, pmd_id); |
2415 | if (!pmd) { | |
2416 | return EINVAL; | |
2417 | } | |
2418 | ||
2419 | ovs_mutex_lock(&pmd->flow_mutex); | |
2420 | netdev_flow = dp_netdev_pmd_find_flow(pmd, del->ufid, del->key, | |
2421 | del->key_len); | |
1763b4b8 | 2422 | if (netdev_flow) { |
b99d3cee | 2423 | if (del->stats) { |
1763b4b8 | 2424 | get_dpif_flow_stats(netdev_flow, del->stats); |
feebdea2 | 2425 | } |
1c1e46ed | 2426 | dp_netdev_pmd_remove_flow(pmd, netdev_flow); |
72865317 | 2427 | } else { |
5279f8fd | 2428 | error = ENOENT; |
72865317 | 2429 | } |
1c1e46ed AW |
2430 | ovs_mutex_unlock(&pmd->flow_mutex); |
2431 | dp_netdev_pmd_unref(pmd); | |
5279f8fd BP |
2432 | |
2433 | return error; | |
72865317 BP |
2434 | } |
2435 | ||
ac64794a BP |
2436 | struct dpif_netdev_flow_dump { |
2437 | struct dpif_flow_dump up; | |
1c1e46ed AW |
2438 | struct cmap_position poll_thread_pos; |
2439 | struct cmap_position flow_pos; | |
2440 | struct dp_netdev_pmd_thread *cur_pmd; | |
d2ad7ef1 JS |
2441 | int status; |
2442 | struct ovs_mutex mutex; | |
e723fd32 JS |
2443 | }; |
2444 | ||
ac64794a BP |
2445 | static struct dpif_netdev_flow_dump * |
2446 | dpif_netdev_flow_dump_cast(struct dpif_flow_dump *dump) | |
72865317 | 2447 | { |
ac64794a | 2448 | return CONTAINER_OF(dump, struct dpif_netdev_flow_dump, up); |
e723fd32 JS |
2449 | } |
2450 | ||
ac64794a | 2451 | static struct dpif_flow_dump * |
64bb477f | 2452 | dpif_netdev_flow_dump_create(const struct dpif *dpif_, bool terse) |
e723fd32 | 2453 | { |
ac64794a | 2454 | struct dpif_netdev_flow_dump *dump; |
e723fd32 | 2455 | |
1c1e46ed | 2456 | dump = xzalloc(sizeof *dump); |
ac64794a | 2457 | dpif_flow_dump_init(&dump->up, dpif_); |
64bb477f | 2458 | dump->up.terse = terse; |
ac64794a BP |
2459 | ovs_mutex_init(&dump->mutex); |
2460 | ||
2461 | return &dump->up; | |
e723fd32 JS |
2462 | } |
2463 | ||
2464 | static int | |
ac64794a | 2465 | dpif_netdev_flow_dump_destroy(struct dpif_flow_dump *dump_) |
e723fd32 | 2466 | { |
ac64794a | 2467 | struct dpif_netdev_flow_dump *dump = dpif_netdev_flow_dump_cast(dump_); |
e723fd32 | 2468 | |
ac64794a BP |
2469 | ovs_mutex_destroy(&dump->mutex); |
2470 | free(dump); | |
704a1e09 BP |
2471 | return 0; |
2472 | } | |
2473 | ||
ac64794a BP |
2474 | struct dpif_netdev_flow_dump_thread { |
2475 | struct dpif_flow_dump_thread up; | |
2476 | struct dpif_netdev_flow_dump *dump; | |
8bb113da RW |
2477 | struct odputil_keybuf keybuf[FLOW_DUMP_MAX_BATCH]; |
2478 | struct odputil_keybuf maskbuf[FLOW_DUMP_MAX_BATCH]; | |
ac64794a BP |
2479 | }; |
2480 | ||
2481 | static struct dpif_netdev_flow_dump_thread * | |
2482 | dpif_netdev_flow_dump_thread_cast(struct dpif_flow_dump_thread *thread) | |
2483 | { | |
2484 | return CONTAINER_OF(thread, struct dpif_netdev_flow_dump_thread, up); | |
2485 | } | |
2486 | ||
2487 | static struct dpif_flow_dump_thread * | |
2488 | dpif_netdev_flow_dump_thread_create(struct dpif_flow_dump *dump_) | |
2489 | { | |
2490 | struct dpif_netdev_flow_dump *dump = dpif_netdev_flow_dump_cast(dump_); | |
2491 | struct dpif_netdev_flow_dump_thread *thread; | |
2492 | ||
2493 | thread = xmalloc(sizeof *thread); | |
2494 | dpif_flow_dump_thread_init(&thread->up, &dump->up); | |
2495 | thread->dump = dump; | |
2496 | return &thread->up; | |
2497 | } | |
2498 | ||
2499 | static void | |
2500 | dpif_netdev_flow_dump_thread_destroy(struct dpif_flow_dump_thread *thread_) | |
2501 | { | |
2502 | struct dpif_netdev_flow_dump_thread *thread | |
2503 | = dpif_netdev_flow_dump_thread_cast(thread_); | |
2504 | ||
2505 | free(thread); | |
2506 | } | |
2507 | ||
704a1e09 | 2508 | static int |
ac64794a | 2509 | dpif_netdev_flow_dump_next(struct dpif_flow_dump_thread *thread_, |
8bb113da | 2510 | struct dpif_flow *flows, int max_flows) |
ac64794a BP |
2511 | { |
2512 | struct dpif_netdev_flow_dump_thread *thread | |
2513 | = dpif_netdev_flow_dump_thread_cast(thread_); | |
2514 | struct dpif_netdev_flow_dump *dump = thread->dump; | |
8bb113da | 2515 | struct dp_netdev_flow *netdev_flows[FLOW_DUMP_MAX_BATCH]; |
8bb113da RW |
2516 | int n_flows = 0; |
2517 | int i; | |
14608a15 | 2518 | |
ac64794a | 2519 | ovs_mutex_lock(&dump->mutex); |
8bb113da | 2520 | if (!dump->status) { |
1c1e46ed AW |
2521 | struct dpif_netdev *dpif = dpif_netdev_cast(thread->up.dpif); |
2522 | struct dp_netdev *dp = get_dp_netdev(&dpif->dpif); | |
2523 | struct dp_netdev_pmd_thread *pmd = dump->cur_pmd; | |
2524 | int flow_limit = MIN(max_flows, FLOW_DUMP_MAX_BATCH); | |
2525 | ||
2526 | /* First call to dump_next(), extracts the first pmd thread. | |
2527 | * If there is no pmd thread, returns immediately. */ | |
2528 | if (!pmd) { | |
2529 | pmd = dp_netdev_pmd_get_next(dp, &dump->poll_thread_pos); | |
2530 | if (!pmd) { | |
2531 | ovs_mutex_unlock(&dump->mutex); | |
2532 | return n_flows; | |
8bb113da | 2533 | |
8bb113da | 2534 | } |
d2ad7ef1 | 2535 | } |
1c1e46ed AW |
2536 | |
2537 | do { | |
2538 | for (n_flows = 0; n_flows < flow_limit; n_flows++) { | |
2539 | struct cmap_node *node; | |
2540 | ||
2541 | node = cmap_next_position(&pmd->flow_table, &dump->flow_pos); | |
2542 | if (!node) { | |
2543 | break; | |
2544 | } | |
2545 | netdev_flows[n_flows] = CONTAINER_OF(node, | |
2546 | struct dp_netdev_flow, | |
2547 | node); | |
2548 | } | |
2549 | /* When finishing dumping the current pmd thread, moves to | |
2550 | * the next. */ | |
2551 | if (n_flows < flow_limit) { | |
2552 | memset(&dump->flow_pos, 0, sizeof dump->flow_pos); | |
2553 | dp_netdev_pmd_unref(pmd); | |
2554 | pmd = dp_netdev_pmd_get_next(dp, &dump->poll_thread_pos); | |
2555 | if (!pmd) { | |
2556 | dump->status = EOF; | |
2557 | break; | |
2558 | } | |
2559 | } | |
2560 | /* Keeps the reference to next caller. */ | |
2561 | dump->cur_pmd = pmd; | |
2562 | ||
2563 | /* If the current dump is empty, do not exit the loop, since the | |
2564 | * remaining pmds could have flows to be dumped. Just dumps again | |
2565 | * on the new 'pmd'. */ | |
2566 | } while (!n_flows); | |
8a4e3a85 | 2567 | } |
ac64794a | 2568 | ovs_mutex_unlock(&dump->mutex); |
ac64794a | 2569 | |
8bb113da RW |
2570 | for (i = 0; i < n_flows; i++) { |
2571 | struct odputil_keybuf *maskbuf = &thread->maskbuf[i]; | |
2572 | struct odputil_keybuf *keybuf = &thread->keybuf[i]; | |
2573 | struct dp_netdev_flow *netdev_flow = netdev_flows[i]; | |
2574 | struct dpif_flow *f = &flows[i]; | |
7af12bd7 | 2575 | struct ofpbuf key, mask; |
8bb113da | 2576 | |
7af12bd7 JS |
2577 | ofpbuf_use_stack(&key, keybuf, sizeof *keybuf); |
2578 | ofpbuf_use_stack(&mask, maskbuf, sizeof *maskbuf); | |
64bb477f JS |
2579 | dp_netdev_flow_to_dpif_flow(netdev_flow, &key, &mask, f, |
2580 | dump->up.terse); | |
8bb113da | 2581 | } |
feebdea2 | 2582 | |
8bb113da | 2583 | return n_flows; |
72865317 BP |
2584 | } |
2585 | ||
2586 | static int | |
758c456d | 2587 | dpif_netdev_execute(struct dpif *dpif, struct dpif_execute *execute) |
65f13b50 | 2588 | OVS_NO_THREAD_SAFETY_ANALYSIS |
72865317 BP |
2589 | { |
2590 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
65f13b50 | 2591 | struct dp_netdev_pmd_thread *pmd; |
1895cc8d | 2592 | struct dp_packet_batch pp; |
72865317 | 2593 | |
cf62fa4c PS |
2594 | if (dp_packet_size(execute->packet) < ETH_HEADER_LEN || |
2595 | dp_packet_size(execute->packet) > UINT16_MAX) { | |
72865317 BP |
2596 | return EINVAL; |
2597 | } | |
2598 | ||
65f13b50 AW |
2599 | /* Tries finding the 'pmd'. If NULL is returned, that means |
2600 | * the current thread is a non-pmd thread and should use | |
b19befae | 2601 | * dp_netdev_get_pmd(dp, NON_PMD_CORE_ID). */ |
65f13b50 AW |
2602 | pmd = ovsthread_getspecific(dp->per_pmd_key); |
2603 | if (!pmd) { | |
b19befae | 2604 | pmd = dp_netdev_get_pmd(dp, NON_PMD_CORE_ID); |
546e57d4 DDP |
2605 | if (!pmd) { |
2606 | return EBUSY; | |
2607 | } | |
65f13b50 AW |
2608 | } |
2609 | ||
2610 | /* If the current thread is non-pmd thread, acquires | |
2611 | * the 'non_pmd_mutex'. */ | |
2612 | if (pmd->core_id == NON_PMD_CORE_ID) { | |
2613 | ovs_mutex_lock(&dp->non_pmd_mutex); | |
2614 | } | |
1c1e46ed | 2615 | |
36d8de17 DDP |
2616 | /* The action processing expects the RSS hash to be valid, because |
2617 | * it's always initialized at the beginning of datapath processing. | |
2618 | * In this case, though, 'execute->packet' may not have gone through | |
2619 | * the datapath at all, it may have been generated by the upper layer | |
2620 | * (OpenFlow packet-out, BFD frame, ...). */ | |
2621 | if (!dp_packet_rss_valid(execute->packet)) { | |
2622 | dp_packet_set_rss_hash(execute->packet, | |
2623 | flow_hash_5tuple(execute->flow, 0)); | |
2624 | } | |
2625 | ||
1895cc8d | 2626 | packet_batch_init_packet(&pp, execute->packet); |
66e4ad8a DDP |
2627 | dp_netdev_execute_actions(pmd, &pp, false, execute->flow, |
2628 | execute->actions, execute->actions_len, | |
2629 | time_msec()); | |
36d8de17 | 2630 | |
65f13b50 AW |
2631 | if (pmd->core_id == NON_PMD_CORE_ID) { |
2632 | ovs_mutex_unlock(&dp->non_pmd_mutex); | |
e9985d6a | 2633 | dp_netdev_pmd_unref(pmd); |
65f13b50 | 2634 | } |
8a4e3a85 | 2635 | |
758c456d | 2636 | return 0; |
72865317 BP |
2637 | } |
2638 | ||
1a0c894a BP |
2639 | static void |
2640 | dpif_netdev_operate(struct dpif *dpif, struct dpif_op **ops, size_t n_ops) | |
2641 | { | |
2642 | size_t i; | |
2643 | ||
2644 | for (i = 0; i < n_ops; i++) { | |
2645 | struct dpif_op *op = ops[i]; | |
2646 | ||
2647 | switch (op->type) { | |
2648 | case DPIF_OP_FLOW_PUT: | |
2649 | op->error = dpif_netdev_flow_put(dpif, &op->u.flow_put); | |
2650 | break; | |
2651 | ||
2652 | case DPIF_OP_FLOW_DEL: | |
2653 | op->error = dpif_netdev_flow_del(dpif, &op->u.flow_del); | |
2654 | break; | |
2655 | ||
2656 | case DPIF_OP_EXECUTE: | |
2657 | op->error = dpif_netdev_execute(dpif, &op->u.execute); | |
2658 | break; | |
6fe09f8c JS |
2659 | |
2660 | case DPIF_OP_FLOW_GET: | |
2661 | op->error = dpif_netdev_flow_get(dpif, &op->u.flow_get); | |
2662 | break; | |
1a0c894a BP |
2663 | } |
2664 | } | |
2665 | } | |
2666 | ||
6e3c6fa4 DDP |
2667 | /* Changes the number or the affinity of pmd threads. The changes are actually |
2668 | * applied in dpif_netdev_run(). */ | |
f2eee189 | 2669 | static int |
a14b8947 | 2670 | dpif_netdev_pmd_set(struct dpif *dpif, const char *cmask) |
f2eee189 AW |
2671 | { |
2672 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
2673 | ||
a6a426d6 IM |
2674 | if (!nullable_string_is_equal(dp->pmd_cmask, cmask)) { |
2675 | free(dp->pmd_cmask); | |
2676 | dp->pmd_cmask = nullable_xstrdup(cmask); | |
2677 | dp_netdev_request_reconfigure(dp); | |
f2eee189 AW |
2678 | } |
2679 | ||
2680 | return 0; | |
2681 | } | |
2682 | ||
3eb67853 IM |
2683 | /* Parses affinity list and returns result in 'core_ids'. */ |
2684 | static int | |
2685 | parse_affinity_list(const char *affinity_list, unsigned *core_ids, int n_rxq) | |
2686 | { | |
2687 | unsigned i; | |
2688 | char *list, *copy, *key, *value; | |
2689 | int error = 0; | |
2690 | ||
2691 | for (i = 0; i < n_rxq; i++) { | |
2692 | core_ids[i] = -1; | |
2693 | } | |
2694 | ||
2695 | if (!affinity_list) { | |
2696 | return 0; | |
2697 | } | |
2698 | ||
2699 | list = copy = xstrdup(affinity_list); | |
2700 | ||
2701 | while (ofputil_parse_key_value(&list, &key, &value)) { | |
2702 | int rxq_id, core_id; | |
2703 | ||
2704 | if (!str_to_int(key, 0, &rxq_id) || rxq_id < 0 | |
2705 | || !str_to_int(value, 0, &core_id) || core_id < 0) { | |
2706 | error = EINVAL; | |
2707 | break; | |
2708 | } | |
2709 | ||
2710 | if (rxq_id < n_rxq) { | |
2711 | core_ids[rxq_id] = core_id; | |
2712 | } | |
2713 | } | |
2714 | ||
2715 | free(copy); | |
2716 | return error; | |
2717 | } | |
2718 | ||
2719 | /* Parses 'affinity_list' and applies configuration if it is valid. */ | |
2720 | static int | |
2721 | dpif_netdev_port_set_rxq_affinity(struct dp_netdev_port *port, | |
2722 | const char *affinity_list) | |
2723 | { | |
2724 | unsigned *core_ids, i; | |
2725 | int error = 0; | |
2726 | ||
2727 | core_ids = xmalloc(port->n_rxq * sizeof *core_ids); | |
2728 | if (parse_affinity_list(affinity_list, core_ids, port->n_rxq)) { | |
2729 | error = EINVAL; | |
2730 | goto exit; | |
2731 | } | |
2732 | ||
2733 | for (i = 0; i < port->n_rxq; i++) { | |
2734 | port->rxqs[i].core_id = core_ids[i]; | |
2735 | } | |
2736 | ||
2737 | exit: | |
2738 | free(core_ids); | |
2739 | return error; | |
2740 | } | |
2741 | ||
2742 | /* Changes the affinity of port's rx queues. The changes are actually applied | |
2743 | * in dpif_netdev_run(). */ | |
2744 | static int | |
2745 | dpif_netdev_port_set_config(struct dpif *dpif, odp_port_t port_no, | |
2746 | const struct smap *cfg) | |
2747 | { | |
2748 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
2749 | struct dp_netdev_port *port; | |
2750 | int error = 0; | |
2751 | const char *affinity_list = smap_get(cfg, "pmd-rxq-affinity"); | |
2752 | ||
2753 | ovs_mutex_lock(&dp->port_mutex); | |
2754 | error = get_port_by_number(dp, port_no, &port); | |
2755 | if (error || !netdev_is_pmd(port->netdev) | |
2756 | || nullable_string_is_equal(affinity_list, port->rxq_affinity_list)) { | |
2757 | goto unlock; | |
2758 | } | |
2759 | ||
2760 | error = dpif_netdev_port_set_rxq_affinity(port, affinity_list); | |
2761 | if (error) { | |
2762 | goto unlock; | |
2763 | } | |
2764 | free(port->rxq_affinity_list); | |
2765 | port->rxq_affinity_list = nullable_xstrdup(affinity_list); | |
2766 | ||
2767 | dp_netdev_request_reconfigure(dp); | |
2768 | unlock: | |
2769 | ovs_mutex_unlock(&dp->port_mutex); | |
2770 | return error; | |
2771 | } | |
2772 | ||
5bf93d67 EJ |
2773 | static int |
2774 | dpif_netdev_queue_to_priority(const struct dpif *dpif OVS_UNUSED, | |
2775 | uint32_t queue_id, uint32_t *priority) | |
2776 | { | |
2777 | *priority = queue_id; | |
2778 | return 0; | |
2779 | } | |
2780 | ||
72865317 | 2781 | \f |
9ff55ae2 DDP |
2782 | /* Creates and returns a new 'struct dp_netdev_actions', whose actions are |
2783 | * a copy of the 'ofpacts_len' bytes of 'ofpacts'. */ | |
a84cb64a BP |
2784 | struct dp_netdev_actions * |
2785 | dp_netdev_actions_create(const struct nlattr *actions, size_t size) | |
2786 | { | |
2787 | struct dp_netdev_actions *netdev_actions; | |
2788 | ||
9ff55ae2 DDP |
2789 | netdev_actions = xmalloc(sizeof *netdev_actions + size); |
2790 | memcpy(netdev_actions->actions, actions, size); | |
a84cb64a BP |
2791 | netdev_actions->size = size; |
2792 | ||
2793 | return netdev_actions; | |
2794 | } | |
2795 | ||
a84cb64a | 2796 | struct dp_netdev_actions * |
61e7deb1 | 2797 | dp_netdev_flow_get_actions(const struct dp_netdev_flow *flow) |
a84cb64a | 2798 | { |
61e7deb1 | 2799 | return ovsrcu_get(struct dp_netdev_actions *, &flow->actions); |
a84cb64a BP |
2800 | } |
2801 | ||
61e7deb1 BP |
2802 | static void |
2803 | dp_netdev_actions_free(struct dp_netdev_actions *actions) | |
a84cb64a | 2804 | { |
61e7deb1 | 2805 | free(actions); |
a84cb64a BP |
2806 | } |
2807 | \f | |
55e3ca97 DDP |
2808 | static inline unsigned long long |
2809 | cycles_counter(void) | |
2810 | { | |
2811 | #ifdef DPDK_NETDEV | |
2812 | return rte_get_tsc_cycles(); | |
2813 | #else | |
2814 | return 0; | |
2815 | #endif | |
2816 | } | |
2817 | ||
2818 | /* Fake mutex to make sure that the calls to cycles_count_* are balanced */ | |
2819 | extern struct ovs_mutex cycles_counter_fake_mutex; | |
2820 | ||
2821 | /* Start counting cycles. Must be followed by 'cycles_count_end()' */ | |
2822 | static inline void | |
2823 | cycles_count_start(struct dp_netdev_pmd_thread *pmd) | |
2824 | OVS_ACQUIRES(&cycles_counter_fake_mutex) | |
2825 | OVS_NO_THREAD_SAFETY_ANALYSIS | |
2826 | { | |
2827 | pmd->last_cycles = cycles_counter(); | |
2828 | } | |
2829 | ||
2830 | /* Stop counting cycles and add them to the counter 'type' */ | |
2831 | static inline void | |
2832 | cycles_count_end(struct dp_netdev_pmd_thread *pmd, | |
2833 | enum pmd_cycles_counter_type type) | |
2834 | OVS_RELEASES(&cycles_counter_fake_mutex) | |
2835 | OVS_NO_THREAD_SAFETY_ANALYSIS | |
2836 | { | |
2837 | unsigned long long interval = cycles_counter() - pmd->last_cycles; | |
2838 | ||
2839 | non_atomic_ullong_add(&pmd->cycles.n[type], interval); | |
2840 | } | |
e4cfed38 | 2841 | |
5794e276 | 2842 | static void |
65f13b50 | 2843 | dp_netdev_process_rxq_port(struct dp_netdev_pmd_thread *pmd, |
9bbf1c3d DDP |
2844 | struct dp_netdev_port *port, |
2845 | struct netdev_rxq *rxq) | |
e4cfed38 | 2846 | { |
1895cc8d PS |
2847 | struct dp_packet_batch batch; |
2848 | int error; | |
e4cfed38 | 2849 | |
1895cc8d | 2850 | dp_packet_batch_init(&batch); |
55e3ca97 | 2851 | cycles_count_start(pmd); |
1895cc8d | 2852 | error = netdev_rxq_recv(rxq, &batch); |
55e3ca97 | 2853 | cycles_count_end(pmd, PMD_CYCLES_POLLING); |
e4cfed38 | 2854 | if (!error) { |
3c33f0ff | 2855 | *recirc_depth_get() = 0; |
41ccaa24 | 2856 | |
55e3ca97 | 2857 | cycles_count_start(pmd); |
1895cc8d | 2858 | dp_netdev_input(pmd, &batch, port->port_no); |
55e3ca97 | 2859 | cycles_count_end(pmd, PMD_CYCLES_PROCESSING); |
e4cfed38 | 2860 | } else if (error != EAGAIN && error != EOPNOTSUPP) { |
3c33f0ff | 2861 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
e4cfed38 PS |
2862 | |
2863 | VLOG_ERR_RL(&rl, "error receiving data from %s: %s", | |
3c33f0ff | 2864 | netdev_get_name(port->netdev), ovs_strerror(error)); |
e4cfed38 PS |
2865 | } |
2866 | } | |
2867 | ||
dc36593c DDP |
2868 | static int |
2869 | port_reconfigure(struct dp_netdev_port *port) | |
2870 | { | |
2871 | struct netdev *netdev = port->netdev; | |
dc36593c DDP |
2872 | int i, err; |
2873 | ||
050c60bf | 2874 | if (!netdev_is_reconf_required(netdev)) { |
dc36593c DDP |
2875 | return 0; |
2876 | } | |
2877 | ||
2878 | /* Closes the existing 'rxq's. */ | |
2879 | for (i = 0; i < port->n_rxq; i++) { | |
3eb67853 IM |
2880 | netdev_rxq_close(port->rxqs[i].rxq); |
2881 | port->rxqs[i].rxq = NULL; | |
dc36593c DDP |
2882 | } |
2883 | port->n_rxq = 0; | |
2884 | ||
050c60bf DDP |
2885 | /* Allows 'netdev' to apply the pending configuration changes. */ |
2886 | err = netdev_reconfigure(netdev); | |
dc36593c | 2887 | if (err && (err != EOPNOTSUPP)) { |
050c60bf DDP |
2888 | VLOG_ERR("Failed to set interface %s new configuration", |
2889 | netdev_get_name(netdev)); | |
dc36593c DDP |
2890 | return err; |
2891 | } | |
050c60bf | 2892 | /* If the netdev_reconfigure() above succeeds, reopens the 'rxq's. */ |
3eb67853 IM |
2893 | port->rxqs = xrealloc(port->rxqs, |
2894 | sizeof *port->rxqs * netdev_n_rxq(netdev)); | |
324c8374 IM |
2895 | /* Realloc 'used' counters for tx queues. */ |
2896 | free(port->txq_used); | |
2897 | port->txq_used = xcalloc(netdev_n_txq(netdev), sizeof *port->txq_used); | |
2898 | ||
dc36593c | 2899 | for (i = 0; i < netdev_n_rxq(netdev); i++) { |
3eb67853 | 2900 | err = netdev_rxq_open(netdev, &port->rxqs[i].rxq, i); |
dc36593c DDP |
2901 | if (err) { |
2902 | return err; | |
2903 | } | |
2904 | port->n_rxq++; | |
2905 | } | |
2906 | ||
3eb67853 IM |
2907 | /* Parse affinity list to apply configuration for new queues. */ |
2908 | dpif_netdev_port_set_rxq_affinity(port, port->rxq_affinity_list); | |
2909 | ||
dc36593c DDP |
2910 | return 0; |
2911 | } | |
2912 | ||
6e3c6fa4 DDP |
2913 | static void |
2914 | reconfigure_pmd_threads(struct dp_netdev *dp) | |
2915 | OVS_REQUIRES(dp->port_mutex) | |
2916 | { | |
dc36593c | 2917 | struct dp_netdev_port *port, *next; |
324c8374 | 2918 | int n_cores; |
6e3c6fa4 | 2919 | |
a6a426d6 IM |
2920 | dp->last_reconfigure_seq = seq_read(dp->reconfigure_seq); |
2921 | ||
6e3c6fa4 DDP |
2922 | dp_netdev_destroy_all_pmds(dp); |
2923 | ||
324c8374 | 2924 | /* Reconfigures the cpu mask. */ |
a6a426d6 | 2925 | ovs_numa_set_cpu_mask(dp->pmd_cmask); |
324c8374 IM |
2926 | |
2927 | n_cores = ovs_numa_get_n_cores(); | |
2928 | if (n_cores == OVS_CORE_UNSPEC) { | |
2929 | VLOG_ERR("Cannot get cpu core info"); | |
2930 | return; | |
2931 | } | |
2932 | ||
dc36593c DDP |
2933 | HMAP_FOR_EACH_SAFE (port, next, node, &dp->ports) { |
2934 | int err; | |
6e3c6fa4 | 2935 | |
dc36593c DDP |
2936 | err = port_reconfigure(port); |
2937 | if (err) { | |
2938 | hmap_remove(&dp->ports, &port->node); | |
2939 | seq_change(dp->port_seq); | |
2940 | port_destroy(port); | |
324c8374 IM |
2941 | } else { |
2942 | port->dynamic_txqs = netdev_n_txq(port->netdev) < n_cores + 1; | |
6e3c6fa4 DDP |
2943 | } |
2944 | } | |
6e3c6fa4 DDP |
2945 | /* Restores the non-pmd. */ |
2946 | dp_netdev_set_nonpmd(dp); | |
2947 | /* Restores all pmd threads. */ | |
2948 | dp_netdev_reset_pmd_threads(dp); | |
2949 | } | |
2950 | ||
050c60bf DDP |
2951 | /* Returns true if one of the netdevs in 'dp' requires a reconfiguration */ |
2952 | static bool | |
2953 | ports_require_restart(const struct dp_netdev *dp) | |
2954 | OVS_REQUIRES(dp->port_mutex) | |
2955 | { | |
2956 | struct dp_netdev_port *port; | |
2957 | ||
2958 | HMAP_FOR_EACH (port, node, &dp->ports) { | |
2959 | if (netdev_is_reconf_required(port->netdev)) { | |
2960 | return true; | |
2961 | } | |
2962 | } | |
2963 | ||
2964 | return false; | |
2965 | } | |
2966 | ||
a36de779 PS |
2967 | /* Return true if needs to revalidate datapath flows. */ |
2968 | static bool | |
e4cfed38 PS |
2969 | dpif_netdev_run(struct dpif *dpif) |
2970 | { | |
2971 | struct dp_netdev_port *port; | |
2972 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
546e57d4 | 2973 | struct dp_netdev_pmd_thread *non_pmd; |
a36de779 | 2974 | uint64_t new_tnl_seq; |
e4cfed38 | 2975 | |
e9985d6a | 2976 | ovs_mutex_lock(&dp->port_mutex); |
546e57d4 DDP |
2977 | non_pmd = dp_netdev_get_pmd(dp, NON_PMD_CORE_ID); |
2978 | if (non_pmd) { | |
2979 | ovs_mutex_lock(&dp->non_pmd_mutex); | |
2980 | HMAP_FOR_EACH (port, node, &dp->ports) { | |
2981 | if (!netdev_is_pmd(port->netdev)) { | |
2982 | int i; | |
55c955bd | 2983 | |
546e57d4 DDP |
2984 | for (i = 0; i < port->n_rxq; i++) { |
2985 | dp_netdev_process_rxq_port(non_pmd, port, | |
2986 | port->rxqs[i].rxq); | |
2987 | } | |
55c955bd | 2988 | } |
e4cfed38 | 2989 | } |
546e57d4 DDP |
2990 | dpif_netdev_xps_revalidate_pmd(non_pmd, time_msec(), false); |
2991 | ovs_mutex_unlock(&dp->non_pmd_mutex); | |
6e3c6fa4 | 2992 | |
546e57d4 DDP |
2993 | dp_netdev_pmd_unref(non_pmd); |
2994 | } | |
1c1e46ed | 2995 | |
a6a426d6 | 2996 | if (dp_netdev_is_reconf_required(dp) || ports_require_restart(dp)) { |
6e3c6fa4 DDP |
2997 | reconfigure_pmd_threads(dp); |
2998 | } | |
2999 | ovs_mutex_unlock(&dp->port_mutex); | |
3000 | ||
53902038 | 3001 | tnl_neigh_cache_run(); |
7f9b8504 | 3002 | tnl_port_map_run(); |
a36de779 PS |
3003 | new_tnl_seq = seq_read(tnl_conf_seq); |
3004 | ||
3005 | if (dp->last_tnl_conf_seq != new_tnl_seq) { | |
3006 | dp->last_tnl_conf_seq = new_tnl_seq; | |
3007 | return true; | |
3008 | } | |
3009 | return false; | |
e4cfed38 PS |
3010 | } |
3011 | ||
3012 | static void | |
3013 | dpif_netdev_wait(struct dpif *dpif) | |
3014 | { | |
3015 | struct dp_netdev_port *port; | |
3016 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
3017 | ||
59e6d833 | 3018 | ovs_mutex_lock(&dp_netdev_mutex); |
e9985d6a DDP |
3019 | ovs_mutex_lock(&dp->port_mutex); |
3020 | HMAP_FOR_EACH (port, node, &dp->ports) { | |
050c60bf | 3021 | netdev_wait_reconf_required(port->netdev); |
55c955bd PS |
3022 | if (!netdev_is_pmd(port->netdev)) { |
3023 | int i; | |
3024 | ||
490e82af | 3025 | for (i = 0; i < port->n_rxq; i++) { |
3eb67853 | 3026 | netdev_rxq_wait(port->rxqs[i].rxq); |
55c955bd | 3027 | } |
e4cfed38 PS |
3028 | } |
3029 | } | |
e9985d6a | 3030 | ovs_mutex_unlock(&dp->port_mutex); |
59e6d833 | 3031 | ovs_mutex_unlock(&dp_netdev_mutex); |
a36de779 | 3032 | seq_wait(tnl_conf_seq, dp->last_tnl_conf_seq); |
e4cfed38 PS |
3033 | } |
3034 | ||
d0cca6c3 DDP |
3035 | static void |
3036 | pmd_free_cached_ports(struct dp_netdev_pmd_thread *pmd) | |
3037 | { | |
3038 | struct tx_port *tx_port_cached; | |
3039 | ||
324c8374 IM |
3040 | /* Free all used tx queue ids. */ |
3041 | dpif_netdev_xps_revalidate_pmd(pmd, 0, true); | |
3042 | ||
d0cca6c3 DDP |
3043 | HMAP_FOR_EACH_POP (tx_port_cached, node, &pmd->port_cache) { |
3044 | free(tx_port_cached); | |
3045 | } | |
3046 | } | |
3047 | ||
3048 | /* Copies ports from 'pmd->tx_ports' (shared with the main thread) to | |
3049 | * 'pmd->port_cache' (thread local) */ | |
3050 | static void | |
3051 | pmd_load_cached_ports(struct dp_netdev_pmd_thread *pmd) | |
3052 | OVS_REQUIRES(pmd->port_mutex) | |
3053 | { | |
3054 | struct tx_port *tx_port, *tx_port_cached; | |
3055 | ||
3056 | pmd_free_cached_ports(pmd); | |
3057 | hmap_shrink(&pmd->port_cache); | |
3058 | ||
3059 | HMAP_FOR_EACH (tx_port, node, &pmd->tx_ports) { | |
3060 | tx_port_cached = xmemdup(tx_port, sizeof *tx_port_cached); | |
3061 | hmap_insert(&pmd->port_cache, &tx_port_cached->node, | |
324c8374 | 3062 | hash_port_no(tx_port_cached->port->port_no)); |
d0cca6c3 DDP |
3063 | } |
3064 | } | |
3065 | ||
e4cfed38 | 3066 | static int |
d0cca6c3 DDP |
3067 | pmd_load_queues_and_ports(struct dp_netdev_pmd_thread *pmd, |
3068 | struct rxq_poll **ppoll_list) | |
e4cfed38 | 3069 | { |
f7791740 | 3070 | struct rxq_poll *poll_list = *ppoll_list; |
ae7ad0a1 IM |
3071 | struct rxq_poll *poll; |
3072 | int i; | |
e4cfed38 | 3073 | |
d0cca6c3 | 3074 | ovs_mutex_lock(&pmd->port_mutex); |
ae7ad0a1 | 3075 | poll_list = xrealloc(poll_list, pmd->poll_cnt * sizeof *poll_list); |
a1fdee13 | 3076 | |
ae7ad0a1 IM |
3077 | i = 0; |
3078 | LIST_FOR_EACH (poll, node, &pmd->poll_list) { | |
ae7ad0a1 | 3079 | poll_list[i++] = *poll; |
e4cfed38 | 3080 | } |
d0cca6c3 DDP |
3081 | |
3082 | pmd_load_cached_ports(pmd); | |
3083 | ||
3084 | ovs_mutex_unlock(&pmd->port_mutex); | |
e4cfed38 | 3085 | |
e4cfed38 | 3086 | *ppoll_list = poll_list; |
d42f9307 | 3087 | return i; |
e4cfed38 PS |
3088 | } |
3089 | ||
6c3eee82 | 3090 | static void * |
e4cfed38 | 3091 | pmd_thread_main(void *f_) |
6c3eee82 | 3092 | { |
65f13b50 | 3093 | struct dp_netdev_pmd_thread *pmd = f_; |
e4cfed38 | 3094 | unsigned int lc = 0; |
f7791740 | 3095 | struct rxq_poll *poll_list; |
84067a4c | 3096 | unsigned int port_seq = PMD_INITIAL_SEQ; |
d42f9307 | 3097 | bool exiting; |
e4cfed38 PS |
3098 | int poll_cnt; |
3099 | int i; | |
6c3eee82 | 3100 | |
e4cfed38 PS |
3101 | poll_list = NULL; |
3102 | ||
65f13b50 AW |
3103 | /* Stores the pmd thread's 'pmd' to 'per_pmd_key'. */ |
3104 | ovsthread_setspecific(pmd->dp->per_pmd_key, pmd); | |
6930c7e0 DDP |
3105 | ovs_numa_thread_setaffinity_core(pmd->core_id); |
3106 | dpdk_set_lcore_id(pmd->core_id); | |
d0cca6c3 | 3107 | poll_cnt = pmd_load_queues_and_ports(pmd, &poll_list); |
e4cfed38 | 3108 | reload: |
65f13b50 | 3109 | emc_cache_init(&pmd->flow_cache); |
ae7ad0a1 | 3110 | |
7dd671f0 MK |
3111 | /* List port/core affinity */ |
3112 | for (i = 0; i < poll_cnt; i++) { | |
ce179f11 IM |
3113 | VLOG_DBG("Core %d processing port \'%s\' with queue-id %d\n", |
3114 | pmd->core_id, netdev_get_name(poll_list[i].port->netdev), | |
3115 | netdev_rxq_get_queue_id(poll_list[i].rx)); | |
7dd671f0 MK |
3116 | } |
3117 | ||
e4cfed38 | 3118 | for (;;) { |
e4cfed38 | 3119 | for (i = 0; i < poll_cnt; i++) { |
65f13b50 | 3120 | dp_netdev_process_rxq_port(pmd, poll_list[i].port, poll_list[i].rx); |
e4cfed38 PS |
3121 | } |
3122 | ||
3123 | if (lc++ > 1024) { | |
84067a4c | 3124 | unsigned int seq; |
6c3eee82 | 3125 | |
e4cfed38 | 3126 | lc = 0; |
84067a4c | 3127 | |
fbe0962b | 3128 | coverage_try_clear(); |
3453b4d6 | 3129 | dp_netdev_pmd_try_optimize(pmd); |
9dede5cf FL |
3130 | if (!ovsrcu_try_quiesce()) { |
3131 | emc_cache_slow_sweep(&pmd->flow_cache); | |
3132 | } | |
84067a4c | 3133 | |
65f13b50 | 3134 | atomic_read_relaxed(&pmd->change_seq, &seq); |
84067a4c JR |
3135 | if (seq != port_seq) { |
3136 | port_seq = seq; | |
6c3eee82 BP |
3137 | break; |
3138 | } | |
3139 | } | |
e4cfed38 | 3140 | } |
6c3eee82 | 3141 | |
d0cca6c3 | 3142 | poll_cnt = pmd_load_queues_and_ports(pmd, &poll_list); |
d42f9307 DDP |
3143 | exiting = latch_is_set(&pmd->exit_latch); |
3144 | /* Signal here to make sure the pmd finishes | |
3145 | * reloading the updated configuration. */ | |
3146 | dp_netdev_pmd_reload_done(pmd); | |
3147 | ||
65f13b50 | 3148 | emc_cache_uninit(&pmd->flow_cache); |
9bbf1c3d | 3149 | |
d42f9307 | 3150 | if (!exiting) { |
e4cfed38 PS |
3151 | goto reload; |
3152 | } | |
6c3eee82 | 3153 | |
e4cfed38 | 3154 | free(poll_list); |
d0cca6c3 | 3155 | pmd_free_cached_ports(pmd); |
6c3eee82 BP |
3156 | return NULL; |
3157 | } | |
3158 | ||
6b31e073 RW |
3159 | static void |
3160 | dp_netdev_disable_upcall(struct dp_netdev *dp) | |
3161 | OVS_ACQUIRES(dp->upcall_rwlock) | |
3162 | { | |
3163 | fat_rwlock_wrlock(&dp->upcall_rwlock); | |
3164 | } | |
3165 | ||
3166 | static void | |
3167 | dpif_netdev_disable_upcall(struct dpif *dpif) | |
3168 | OVS_NO_THREAD_SAFETY_ANALYSIS | |
3169 | { | |
3170 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
3171 | dp_netdev_disable_upcall(dp); | |
3172 | } | |
3173 | ||
3174 | static void | |
3175 | dp_netdev_enable_upcall(struct dp_netdev *dp) | |
3176 | OVS_RELEASES(dp->upcall_rwlock) | |
3177 | { | |
3178 | fat_rwlock_unlock(&dp->upcall_rwlock); | |
3179 | } | |
3180 | ||
3181 | static void | |
3182 | dpif_netdev_enable_upcall(struct dpif *dpif) | |
3183 | OVS_NO_THREAD_SAFETY_ANALYSIS | |
3184 | { | |
3185 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
3186 | dp_netdev_enable_upcall(dp); | |
3187 | } | |
3188 | ||
ae7ad0a1 | 3189 | static void |
accf8626 AW |
3190 | dp_netdev_pmd_reload_done(struct dp_netdev_pmd_thread *pmd) |
3191 | { | |
3192 | ovs_mutex_lock(&pmd->cond_mutex); | |
3193 | xpthread_cond_signal(&pmd->cond); | |
3194 | ovs_mutex_unlock(&pmd->cond_mutex); | |
3195 | } | |
3196 | ||
1c1e46ed | 3197 | /* Finds and refs the dp_netdev_pmd_thread on core 'core_id'. Returns |
546e57d4 DDP |
3198 | * the pointer if succeeds, otherwise, NULL (it can return NULL even if |
3199 | * 'core_id' is NON_PMD_CORE_ID). | |
1c1e46ed AW |
3200 | * |
3201 | * Caller must unrefs the returned reference. */ | |
65f13b50 | 3202 | static struct dp_netdev_pmd_thread * |
bd5131ba | 3203 | dp_netdev_get_pmd(struct dp_netdev *dp, unsigned core_id) |
65f13b50 AW |
3204 | { |
3205 | struct dp_netdev_pmd_thread *pmd; | |
55847abe | 3206 | const struct cmap_node *pnode; |
65f13b50 | 3207 | |
b19befae | 3208 | pnode = cmap_find(&dp->poll_threads, hash_int(core_id, 0)); |
1c1e46ed AW |
3209 | if (!pnode) { |
3210 | return NULL; | |
3211 | } | |
65f13b50 AW |
3212 | pmd = CONTAINER_OF(pnode, struct dp_netdev_pmd_thread, node); |
3213 | ||
1c1e46ed | 3214 | return dp_netdev_pmd_try_ref(pmd) ? pmd : NULL; |
65f13b50 AW |
3215 | } |
3216 | ||
f2eee189 AW |
3217 | /* Sets the 'struct dp_netdev_pmd_thread' for non-pmd threads. */ |
3218 | static void | |
3219 | dp_netdev_set_nonpmd(struct dp_netdev *dp) | |
e9985d6a | 3220 | OVS_REQUIRES(dp->port_mutex) |
f2eee189 AW |
3221 | { |
3222 | struct dp_netdev_pmd_thread *non_pmd; | |
d0cca6c3 | 3223 | struct dp_netdev_port *port; |
f2eee189 AW |
3224 | |
3225 | non_pmd = xzalloc(sizeof *non_pmd); | |
00873463 | 3226 | dp_netdev_configure_pmd(non_pmd, dp, NON_PMD_CORE_ID, OVS_NUMA_UNSPEC); |
d0cca6c3 | 3227 | |
e9985d6a | 3228 | HMAP_FOR_EACH (port, node, &dp->ports) { |
d0cca6c3 DDP |
3229 | dp_netdev_add_port_tx_to_pmd(non_pmd, port); |
3230 | } | |
3231 | ||
3232 | dp_netdev_reload_pmd__(non_pmd); | |
f2eee189 AW |
3233 | } |
3234 | ||
1c1e46ed AW |
3235 | /* Caller must have valid pointer to 'pmd'. */ |
3236 | static bool | |
3237 | dp_netdev_pmd_try_ref(struct dp_netdev_pmd_thread *pmd) | |
3238 | { | |
3239 | return ovs_refcount_try_ref_rcu(&pmd->ref_cnt); | |
3240 | } | |
3241 | ||
3242 | static void | |
3243 | dp_netdev_pmd_unref(struct dp_netdev_pmd_thread *pmd) | |
3244 | { | |
3245 | if (pmd && ovs_refcount_unref(&pmd->ref_cnt) == 1) { | |
3246 | ovsrcu_postpone(dp_netdev_destroy_pmd, pmd); | |
3247 | } | |
3248 | } | |
3249 | ||
3250 | /* Given cmap position 'pos', tries to ref the next node. If try_ref() | |
3251 | * fails, keeps checking for next node until reaching the end of cmap. | |
3252 | * | |
3253 | * Caller must unrefs the returned reference. */ | |
3254 | static struct dp_netdev_pmd_thread * | |
3255 | dp_netdev_pmd_get_next(struct dp_netdev *dp, struct cmap_position *pos) | |
3256 | { | |
3257 | struct dp_netdev_pmd_thread *next; | |
3258 | ||
3259 | do { | |
3260 | struct cmap_node *node; | |
3261 | ||
3262 | node = cmap_next_position(&dp->poll_threads, pos); | |
3263 | next = node ? CONTAINER_OF(node, struct dp_netdev_pmd_thread, node) | |
3264 | : NULL; | |
3265 | } while (next && !dp_netdev_pmd_try_ref(next)); | |
3266 | ||
3267 | return next; | |
3268 | } | |
3269 | ||
65f13b50 | 3270 | /* Configures the 'pmd' based on the input argument. */ |
6c3eee82 | 3271 | static void |
65f13b50 | 3272 | dp_netdev_configure_pmd(struct dp_netdev_pmd_thread *pmd, struct dp_netdev *dp, |
00873463 | 3273 | unsigned core_id, int numa_id) |
65f13b50 AW |
3274 | { |
3275 | pmd->dp = dp; | |
65f13b50 AW |
3276 | pmd->core_id = core_id; |
3277 | pmd->numa_id = numa_id; | |
ae7ad0a1 | 3278 | pmd->poll_cnt = 0; |
1c1e46ed | 3279 | |
324c8374 | 3280 | atomic_init(&pmd->static_tx_qid, |
347ba9bb IM |
3281 | (core_id == NON_PMD_CORE_ID) |
3282 | ? ovs_numa_get_n_cores() | |
3283 | : get_n_pmd_threads(dp)); | |
3284 | ||
1c1e46ed | 3285 | ovs_refcount_init(&pmd->ref_cnt); |
65f13b50 AW |
3286 | latch_init(&pmd->exit_latch); |
3287 | atomic_init(&pmd->change_seq, PMD_INITIAL_SEQ); | |
accf8626 AW |
3288 | xpthread_cond_init(&pmd->cond, NULL); |
3289 | ovs_mutex_init(&pmd->cond_mutex); | |
1c1e46ed | 3290 | ovs_mutex_init(&pmd->flow_mutex); |
d0cca6c3 | 3291 | ovs_mutex_init(&pmd->port_mutex); |
1c1e46ed | 3292 | cmap_init(&pmd->flow_table); |
3453b4d6 JS |
3293 | cmap_init(&pmd->classifiers); |
3294 | pmd->next_optimization = time_msec() + DPCLS_OPTIMIZATION_INTERVAL; | |
417e7e66 | 3295 | ovs_list_init(&pmd->poll_list); |
d0cca6c3 DDP |
3296 | hmap_init(&pmd->tx_ports); |
3297 | hmap_init(&pmd->port_cache); | |
65f13b50 AW |
3298 | /* init the 'flow_cache' since there is no |
3299 | * actual thread created for NON_PMD_CORE_ID. */ | |
3300 | if (core_id == NON_PMD_CORE_ID) { | |
3301 | emc_cache_init(&pmd->flow_cache); | |
3302 | } | |
3303 | cmap_insert(&dp->poll_threads, CONST_CAST(struct cmap_node *, &pmd->node), | |
3304 | hash_int(core_id, 0)); | |
3305 | } | |
3306 | ||
1c1e46ed AW |
3307 | static void |
3308 | dp_netdev_destroy_pmd(struct dp_netdev_pmd_thread *pmd) | |
3309 | { | |
3453b4d6 JS |
3310 | struct dpcls *cls; |
3311 | ||
1c1e46ed | 3312 | dp_netdev_pmd_flow_flush(pmd); |
d0cca6c3 DDP |
3313 | hmap_destroy(&pmd->port_cache); |
3314 | hmap_destroy(&pmd->tx_ports); | |
3453b4d6 JS |
3315 | /* All flows (including their dpcls_rules) have been deleted already */ |
3316 | CMAP_FOR_EACH (cls, node, &pmd->classifiers) { | |
3317 | dpcls_destroy(cls); | |
3318 | } | |
3319 | cmap_destroy(&pmd->classifiers); | |
1c1e46ed AW |
3320 | cmap_destroy(&pmd->flow_table); |
3321 | ovs_mutex_destroy(&pmd->flow_mutex); | |
3322 | latch_destroy(&pmd->exit_latch); | |
3323 | xpthread_cond_destroy(&pmd->cond); | |
3324 | ovs_mutex_destroy(&pmd->cond_mutex); | |
d0cca6c3 | 3325 | ovs_mutex_destroy(&pmd->port_mutex); |
1c1e46ed AW |
3326 | free(pmd); |
3327 | } | |
3328 | ||
3329 | /* Stops the pmd thread, removes it from the 'dp->poll_threads', | |
3330 | * and unrefs the struct. */ | |
65f13b50 | 3331 | static void |
e4e74c3a | 3332 | dp_netdev_del_pmd(struct dp_netdev *dp, struct dp_netdev_pmd_thread *pmd) |
6c3eee82 | 3333 | { |
d0cca6c3 DDP |
3334 | /* NON_PMD_CORE_ID doesn't have a thread, so we don't have to synchronize, |
3335 | * but extra cleanup is necessary */ | |
65f13b50 AW |
3336 | if (pmd->core_id == NON_PMD_CORE_ID) { |
3337 | emc_cache_uninit(&pmd->flow_cache); | |
d0cca6c3 | 3338 | pmd_free_cached_ports(pmd); |
65f13b50 AW |
3339 | } else { |
3340 | latch_set(&pmd->exit_latch); | |
3341 | dp_netdev_reload_pmd__(pmd); | |
3342 | ovs_numa_unpin_core(pmd->core_id); | |
3343 | xpthread_join(pmd->thread, NULL); | |
3344 | } | |
ae7ad0a1 | 3345 | |
d0cca6c3 | 3346 | dp_netdev_pmd_clear_ports(pmd); |
ae7ad0a1 | 3347 | |
e4e74c3a AW |
3348 | /* Purges the 'pmd''s flows after stopping the thread, but before |
3349 | * destroying the flows, so that the flow stats can be collected. */ | |
3350 | if (dp->dp_purge_cb) { | |
3351 | dp->dp_purge_cb(dp->dp_purge_aux, pmd->core_id); | |
3352 | } | |
65f13b50 | 3353 | cmap_remove(&pmd->dp->poll_threads, &pmd->node, hash_int(pmd->core_id, 0)); |
1c1e46ed | 3354 | dp_netdev_pmd_unref(pmd); |
65f13b50 | 3355 | } |
6c3eee82 | 3356 | |
65f13b50 AW |
3357 | /* Destroys all pmd threads. */ |
3358 | static void | |
3359 | dp_netdev_destroy_all_pmds(struct dp_netdev *dp) | |
3360 | { | |
3361 | struct dp_netdev_pmd_thread *pmd; | |
d916785c DDP |
3362 | struct dp_netdev_pmd_thread **pmd_list; |
3363 | size_t k = 0, n_pmds; | |
3364 | ||
3365 | n_pmds = cmap_count(&dp->poll_threads); | |
3366 | pmd_list = xcalloc(n_pmds, sizeof *pmd_list); | |
65f13b50 AW |
3367 | |
3368 | CMAP_FOR_EACH (pmd, node, &dp->poll_threads) { | |
d916785c DDP |
3369 | /* We cannot call dp_netdev_del_pmd(), since it alters |
3370 | * 'dp->poll_threads' (while we're iterating it) and it | |
3371 | * might quiesce. */ | |
3372 | ovs_assert(k < n_pmds); | |
3373 | pmd_list[k++] = pmd; | |
6c3eee82 | 3374 | } |
d916785c DDP |
3375 | |
3376 | for (size_t i = 0; i < k; i++) { | |
3377 | dp_netdev_del_pmd(dp, pmd_list[i]); | |
3378 | } | |
3379 | free(pmd_list); | |
65f13b50 | 3380 | } |
6c3eee82 | 3381 | |
347ba9bb | 3382 | /* Deletes all pmd threads on numa node 'numa_id' and |
324c8374 | 3383 | * fixes static_tx_qids of other threads to keep them sequential. */ |
65f13b50 AW |
3384 | static void |
3385 | dp_netdev_del_pmds_on_numa(struct dp_netdev *dp, int numa_id) | |
3386 | { | |
3387 | struct dp_netdev_pmd_thread *pmd; | |
347ba9bb IM |
3388 | int n_pmds_on_numa, n_pmds; |
3389 | int *free_idx, k = 0; | |
d916785c | 3390 | struct dp_netdev_pmd_thread **pmd_list; |
347ba9bb IM |
3391 | |
3392 | n_pmds_on_numa = get_n_pmd_threads_on_numa(dp, numa_id); | |
d916785c DDP |
3393 | free_idx = xcalloc(n_pmds_on_numa, sizeof *free_idx); |
3394 | pmd_list = xcalloc(n_pmds_on_numa, sizeof *pmd_list); | |
6c3eee82 | 3395 | |
65f13b50 | 3396 | CMAP_FOR_EACH (pmd, node, &dp->poll_threads) { |
d916785c DDP |
3397 | /* We cannot call dp_netdev_del_pmd(), since it alters |
3398 | * 'dp->poll_threads' (while we're iterating it) and it | |
3399 | * might quiesce. */ | |
65f13b50 | 3400 | if (pmd->numa_id == numa_id) { |
324c8374 | 3401 | atomic_read_relaxed(&pmd->static_tx_qid, &free_idx[k]); |
d916785c DDP |
3402 | pmd_list[k] = pmd; |
3403 | ovs_assert(k < n_pmds_on_numa); | |
347ba9bb | 3404 | k++; |
65f13b50 | 3405 | } |
6c3eee82 | 3406 | } |
347ba9bb | 3407 | |
d916785c DDP |
3408 | for (int i = 0; i < k; i++) { |
3409 | dp_netdev_del_pmd(dp, pmd_list[i]); | |
3410 | } | |
3411 | ||
347ba9bb IM |
3412 | n_pmds = get_n_pmd_threads(dp); |
3413 | CMAP_FOR_EACH (pmd, node, &dp->poll_threads) { | |
3414 | int old_tx_qid; | |
3415 | ||
324c8374 | 3416 | atomic_read_relaxed(&pmd->static_tx_qid, &old_tx_qid); |
347ba9bb IM |
3417 | |
3418 | if (old_tx_qid >= n_pmds) { | |
3419 | int new_tx_qid = free_idx[--k]; | |
3420 | ||
324c8374 | 3421 | atomic_store_relaxed(&pmd->static_tx_qid, new_tx_qid); |
347ba9bb IM |
3422 | } |
3423 | } | |
3424 | ||
d916785c | 3425 | free(pmd_list); |
347ba9bb | 3426 | free(free_idx); |
65f13b50 | 3427 | } |
6c3eee82 | 3428 | |
d0cca6c3 DDP |
3429 | /* Deletes all rx queues from pmd->poll_list and all the ports from |
3430 | * pmd->tx_ports. */ | |
cc245ce8 | 3431 | static void |
d0cca6c3 | 3432 | dp_netdev_pmd_clear_ports(struct dp_netdev_pmd_thread *pmd) |
cc245ce8 IM |
3433 | { |
3434 | struct rxq_poll *poll; | |
d0cca6c3 | 3435 | struct tx_port *port; |
cc245ce8 | 3436 | |
d0cca6c3 | 3437 | ovs_mutex_lock(&pmd->port_mutex); |
cc245ce8 | 3438 | LIST_FOR_EACH_POP (poll, node, &pmd->poll_list) { |
cc245ce8 IM |
3439 | free(poll); |
3440 | } | |
3441 | pmd->poll_cnt = 0; | |
d0cca6c3 DDP |
3442 | HMAP_FOR_EACH_POP (port, node, &pmd->tx_ports) { |
3443 | free(port); | |
3444 | } | |
3445 | ovs_mutex_unlock(&pmd->port_mutex); | |
cc245ce8 IM |
3446 | } |
3447 | ||
d0cca6c3 DDP |
3448 | static struct tx_port * |
3449 | tx_port_lookup(const struct hmap *hmap, odp_port_t port_no) | |
3450 | { | |
3451 | struct tx_port *tx; | |
3452 | ||
3453 | HMAP_FOR_EACH_IN_BUCKET (tx, node, hash_port_no(port_no), hmap) { | |
324c8374 | 3454 | if (tx->port->port_no == port_no) { |
d0cca6c3 DDP |
3455 | return tx; |
3456 | } | |
3457 | } | |
3458 | ||
3459 | return NULL; | |
3460 | } | |
3461 | ||
3462 | /* Deletes all rx queues of 'port' from 'poll_list', and the 'port' from | |
3463 | * 'tx_ports' of 'pmd' thread. Returns true if 'port' was found in 'pmd' | |
3464 | * (therefore a restart is required). */ | |
b68872d8 DDP |
3465 | static bool |
3466 | dp_netdev_del_port_from_pmd__(struct dp_netdev_port *port, | |
3467 | struct dp_netdev_pmd_thread *pmd) | |
cc245ce8 IM |
3468 | { |
3469 | struct rxq_poll *poll, *next; | |
d0cca6c3 | 3470 | struct tx_port *tx; |
cc245ce8 IM |
3471 | bool found = false; |
3472 | ||
d0cca6c3 | 3473 | ovs_mutex_lock(&pmd->port_mutex); |
cc245ce8 IM |
3474 | LIST_FOR_EACH_SAFE (poll, next, node, &pmd->poll_list) { |
3475 | if (poll->port == port) { | |
3476 | found = true; | |
417e7e66 | 3477 | ovs_list_remove(&poll->node); |
cc245ce8 IM |
3478 | pmd->poll_cnt--; |
3479 | free(poll); | |
3480 | } | |
3481 | } | |
d0cca6c3 DDP |
3482 | |
3483 | tx = tx_port_lookup(&pmd->tx_ports, port->port_no); | |
3484 | if (tx) { | |
3485 | hmap_remove(&pmd->tx_ports, &tx->node); | |
3486 | free(tx); | |
3487 | found = true; | |
3488 | } | |
3489 | ovs_mutex_unlock(&pmd->port_mutex); | |
b68872d8 DDP |
3490 | |
3491 | return found; | |
3492 | } | |
3493 | ||
d0cca6c3 DDP |
3494 | /* Deletes 'port' from the 'poll_list' and from the 'tx_ports' of all the pmd |
3495 | * threads. The pmd threads that need to be restarted are inserted in | |
3496 | * 'to_reload'. */ | |
b68872d8 DDP |
3497 | static void |
3498 | dp_netdev_del_port_from_all_pmds__(struct dp_netdev *dp, | |
3499 | struct dp_netdev_port *port, | |
3500 | struct hmapx *to_reload) | |
3501 | { | |
b68872d8 DDP |
3502 | struct dp_netdev_pmd_thread *pmd; |
3503 | ||
3504 | CMAP_FOR_EACH (pmd, node, &dp->poll_threads) { | |
d0cca6c3 | 3505 | bool found; |
b68872d8 | 3506 | |
d0cca6c3 | 3507 | found = dp_netdev_del_port_from_pmd__(port, pmd); |
b68872d8 | 3508 | |
d0cca6c3 DDP |
3509 | if (found) { |
3510 | hmapx_add(to_reload, pmd); | |
3511 | } | |
cc245ce8 IM |
3512 | } |
3513 | } | |
3514 | ||
d0cca6c3 DDP |
3515 | /* Deletes 'port' from the 'poll_list' and from the 'tx_ports' of all the pmd |
3516 | * threads. Reloads the threads if needed. */ | |
cc245ce8 IM |
3517 | static void |
3518 | dp_netdev_del_port_from_all_pmds(struct dp_netdev *dp, | |
3519 | struct dp_netdev_port *port) | |
3520 | { | |
cc245ce8 | 3521 | struct dp_netdev_pmd_thread *pmd; |
b68872d8 DDP |
3522 | struct hmapx to_reload = HMAPX_INITIALIZER(&to_reload); |
3523 | struct hmapx_node *node; | |
cc245ce8 | 3524 | |
b68872d8 DDP |
3525 | dp_netdev_del_port_from_all_pmds__(dp, port, &to_reload); |
3526 | ||
3527 | HMAPX_FOR_EACH (node, &to_reload) { | |
3528 | pmd = (struct dp_netdev_pmd_thread *) node->data; | |
3529 | dp_netdev_reload_pmd__(pmd); | |
cc245ce8 | 3530 | } |
b68872d8 DDP |
3531 | |
3532 | hmapx_destroy(&to_reload); | |
cc245ce8 IM |
3533 | } |
3534 | ||
b68872d8 | 3535 | |
3eb67853 IM |
3536 | /* Returns non-isolated PMD thread from this numa node with fewer |
3537 | * rx queues to poll. Returns NULL if there is no non-isolated PMD threads | |
3538 | * on this numa node. Can be called safely only by main thread. */ | |
ae7ad0a1 IM |
3539 | static struct dp_netdev_pmd_thread * |
3540 | dp_netdev_less_loaded_pmd_on_numa(struct dp_netdev *dp, int numa_id) | |
3541 | { | |
3542 | int min_cnt = -1; | |
3543 | struct dp_netdev_pmd_thread *pmd, *res = NULL; | |
3544 | ||
3545 | CMAP_FOR_EACH (pmd, node, &dp->poll_threads) { | |
3eb67853 | 3546 | if (!pmd->isolated && pmd->numa_id == numa_id |
ae7ad0a1 IM |
3547 | && (min_cnt > pmd->poll_cnt || res == NULL)) { |
3548 | min_cnt = pmd->poll_cnt; | |
3549 | res = pmd; | |
3550 | } | |
3551 | } | |
3552 | ||
3553 | return res; | |
3554 | } | |
3555 | ||
3556 | /* Adds rx queue to poll_list of PMD thread. */ | |
3557 | static void | |
3558 | dp_netdev_add_rxq_to_pmd(struct dp_netdev_pmd_thread *pmd, | |
3559 | struct dp_netdev_port *port, struct netdev_rxq *rx) | |
d0cca6c3 | 3560 | OVS_REQUIRES(pmd->port_mutex) |
ae7ad0a1 IM |
3561 | { |
3562 | struct rxq_poll *poll = xmalloc(sizeof *poll); | |
3563 | ||
ae7ad0a1 IM |
3564 | poll->port = port; |
3565 | poll->rx = rx; | |
3566 | ||
417e7e66 | 3567 | ovs_list_push_back(&pmd->poll_list, &poll->node); |
ae7ad0a1 IM |
3568 | pmd->poll_cnt++; |
3569 | } | |
3570 | ||
d0cca6c3 DDP |
3571 | /* Add 'port' to the tx port cache of 'pmd', which must be reloaded for the |
3572 | * changes to take effect. */ | |
cc245ce8 | 3573 | static void |
d0cca6c3 DDP |
3574 | dp_netdev_add_port_tx_to_pmd(struct dp_netdev_pmd_thread *pmd, |
3575 | struct dp_netdev_port *port) | |
3576 | { | |
3577 | struct tx_port *tx = xzalloc(sizeof *tx); | |
3578 | ||
324c8374 IM |
3579 | tx->port = port; |
3580 | tx->qid = -1; | |
d0cca6c3 DDP |
3581 | |
3582 | ovs_mutex_lock(&pmd->port_mutex); | |
324c8374 | 3583 | hmap_insert(&pmd->tx_ports, &tx->node, hash_port_no(tx->port->port_no)); |
d0cca6c3 DDP |
3584 | ovs_mutex_unlock(&pmd->port_mutex); |
3585 | } | |
3586 | ||
3eb67853 IM |
3587 | /* Distribute all {pinned|non-pinned} rx queues of 'port' between PMD |
3588 | * threads in 'dp'. The pmd threads that need to be restarted are inserted | |
3589 | * in 'to_reload'. PMD threads with pinned queues marked as isolated. */ | |
d0cca6c3 DDP |
3590 | static void |
3591 | dp_netdev_add_port_rx_to_pmds(struct dp_netdev *dp, | |
3592 | struct dp_netdev_port *port, | |
3eb67853 | 3593 | struct hmapx *to_reload, bool pinned) |
cc245ce8 IM |
3594 | { |
3595 | int numa_id = netdev_get_numa_id(port->netdev); | |
3eb67853 | 3596 | struct dp_netdev_pmd_thread *pmd; |
cc245ce8 IM |
3597 | int i; |
3598 | ||
d0cca6c3 DDP |
3599 | if (!netdev_is_pmd(port->netdev)) { |
3600 | return; | |
3601 | } | |
cc245ce8 | 3602 | |
490e82af | 3603 | for (i = 0; i < port->n_rxq; i++) { |
3eb67853 IM |
3604 | if (pinned) { |
3605 | if (port->rxqs[i].core_id == -1) { | |
3606 | continue; | |
3607 | } | |
3608 | pmd = dp_netdev_get_pmd(dp, port->rxqs[i].core_id); | |
3609 | if (!pmd) { | |
3610 | VLOG_WARN("There is no PMD thread on core %d. " | |
3611 | "Queue %d on port \'%s\' will not be polled.", | |
3612 | port->rxqs[i].core_id, i, | |
3613 | netdev_get_name(port->netdev)); | |
3614 | continue; | |
3615 | } | |
3616 | pmd->isolated = true; | |
3617 | dp_netdev_pmd_unref(pmd); | |
3618 | } else { | |
3619 | if (port->rxqs[i].core_id != -1) { | |
3620 | continue; | |
3621 | } | |
3622 | pmd = dp_netdev_less_loaded_pmd_on_numa(dp, numa_id); | |
3623 | if (!pmd) { | |
3624 | VLOG_WARN("There's no available pmd thread on numa node %d", | |
3625 | numa_id); | |
3626 | break; | |
3627 | } | |
cc245ce8 IM |
3628 | } |
3629 | ||
d0cca6c3 | 3630 | ovs_mutex_lock(&pmd->port_mutex); |
3eb67853 | 3631 | dp_netdev_add_rxq_to_pmd(pmd, port, port->rxqs[i].rxq); |
d0cca6c3 | 3632 | ovs_mutex_unlock(&pmd->port_mutex); |
cc245ce8 | 3633 | |
b68872d8 | 3634 | hmapx_add(to_reload, pmd); |
cc245ce8 | 3635 | } |
b68872d8 DDP |
3636 | } |
3637 | ||
3eb67853 IM |
3638 | /* Distributes all non-pinned rx queues of 'port' between all PMD threads |
3639 | * in 'dp' and inserts 'port' in the PMD threads 'tx_ports'. The pmd threads | |
3640 | * that need to be restarted are inserted in 'to_reload'. */ | |
d0cca6c3 DDP |
3641 | static void |
3642 | dp_netdev_add_port_to_pmds__(struct dp_netdev *dp, struct dp_netdev_port *port, | |
3643 | struct hmapx *to_reload) | |
3644 | { | |
3645 | struct dp_netdev_pmd_thread *pmd; | |
3646 | ||
3eb67853 | 3647 | dp_netdev_add_port_rx_to_pmds(dp, port, to_reload, false); |
d0cca6c3 DDP |
3648 | |
3649 | CMAP_FOR_EACH (pmd, node, &dp->poll_threads) { | |
3650 | dp_netdev_add_port_tx_to_pmd(pmd, port); | |
3651 | hmapx_add(to_reload, pmd); | |
3652 | } | |
3653 | } | |
3654 | ||
3eb67853 IM |
3655 | /* Distributes all non-pinned rx queues of 'port' between all PMD threads |
3656 | * in 'dp', inserts 'port' in the PMD threads 'tx_ports' and reloads them, | |
3657 | * if needed. */ | |
b68872d8 DDP |
3658 | static void |
3659 | dp_netdev_add_port_to_pmds(struct dp_netdev *dp, struct dp_netdev_port *port) | |
3660 | { | |
3661 | struct dp_netdev_pmd_thread *pmd; | |
3662 | struct hmapx to_reload = HMAPX_INITIALIZER(&to_reload); | |
3663 | struct hmapx_node *node; | |
3664 | ||
3665 | dp_netdev_add_port_to_pmds__(dp, port, &to_reload); | |
cc245ce8 IM |
3666 | |
3667 | HMAPX_FOR_EACH (node, &to_reload) { | |
3668 | pmd = (struct dp_netdev_pmd_thread *) node->data; | |
3669 | dp_netdev_reload_pmd__(pmd); | |
3670 | } | |
3671 | ||
3672 | hmapx_destroy(&to_reload); | |
3673 | } | |
3674 | ||
d0cca6c3 DDP |
3675 | /* Starts pmd threads for the numa node 'numa_id', if not already started. |
3676 | * The function takes care of filling the threads tx port cache. */ | |
65f13b50 AW |
3677 | static void |
3678 | dp_netdev_set_pmds_on_numa(struct dp_netdev *dp, int numa_id) | |
e9985d6a | 3679 | OVS_REQUIRES(dp->port_mutex) |
65f13b50 AW |
3680 | { |
3681 | int n_pmds; | |
e4cfed38 | 3682 | |
65f13b50 | 3683 | if (!ovs_numa_numa_id_is_valid(numa_id)) { |
d0cca6c3 DDP |
3684 | VLOG_WARN("Cannot create pmd threads due to numa id (%d) invalid", |
3685 | numa_id); | |
3686 | return; | |
65f13b50 AW |
3687 | } |
3688 | ||
3689 | n_pmds = get_n_pmd_threads_on_numa(dp, numa_id); | |
3690 | ||
3691 | /* If there are already pmd threads created for the numa node | |
3692 | * in which 'netdev' is on, do nothing. Else, creates the | |
3693 | * pmd threads for the numa node. */ | |
3694 | if (!n_pmds) { | |
d0cca6c3 | 3695 | int can_have, n_unpinned, i; |
65f13b50 AW |
3696 | |
3697 | n_unpinned = ovs_numa_get_n_unpinned_cores_on_numa(numa_id); | |
3698 | if (!n_unpinned) { | |
d0cca6c3 DDP |
3699 | VLOG_WARN("Cannot create pmd threads due to out of unpinned " |
3700 | "cores on numa node %d", numa_id); | |
65f13b50 AW |
3701 | return; |
3702 | } | |
6c3eee82 | 3703 | |
f2eee189 AW |
3704 | /* If cpu mask is specified, uses all unpinned cores, otherwise |
3705 | * tries creating NR_PMD_THREADS pmd threads. */ | |
3706 | can_have = dp->pmd_cmask ? n_unpinned : MIN(n_unpinned, NR_PMD_THREADS); | |
65f13b50 | 3707 | for (i = 0; i < can_have; i++) { |
bd5131ba | 3708 | unsigned core_id = ovs_numa_get_unpinned_core_on_numa(numa_id); |
d0cca6c3 DDP |
3709 | struct dp_netdev_pmd_thread *pmd = xzalloc(sizeof *pmd); |
3710 | struct dp_netdev_port *port; | |
ae7ad0a1 | 3711 | |
d0cca6c3 DDP |
3712 | dp_netdev_configure_pmd(pmd, dp, core_id, numa_id); |
3713 | ||
e9985d6a | 3714 | HMAP_FOR_EACH (port, node, &dp->ports) { |
d0cca6c3 | 3715 | dp_netdev_add_port_tx_to_pmd(pmd, port); |
ae7ad0a1 | 3716 | } |
ae7ad0a1 | 3717 | |
d0cca6c3 | 3718 | pmd->thread = ovs_thread_create("pmd", pmd_thread_main, pmd); |
65f13b50 AW |
3719 | } |
3720 | VLOG_INFO("Created %d pmd threads on numa node %d", can_have, numa_id); | |
6c3eee82 BP |
3721 | } |
3722 | } | |
e4cfed38 | 3723 | |
6c3eee82 | 3724 | \f |
f2eee189 AW |
3725 | /* Called after pmd threads config change. Restarts pmd threads with |
3726 | * new configuration. */ | |
3727 | static void | |
3728 | dp_netdev_reset_pmd_threads(struct dp_netdev *dp) | |
e9985d6a | 3729 | OVS_REQUIRES(dp->port_mutex) |
f2eee189 | 3730 | { |
d0cca6c3 DDP |
3731 | struct hmapx to_reload = HMAPX_INITIALIZER(&to_reload); |
3732 | struct dp_netdev_pmd_thread *pmd; | |
f2eee189 | 3733 | struct dp_netdev_port *port; |
d0cca6c3 | 3734 | struct hmapx_node *node; |
f2eee189 | 3735 | |
e9985d6a | 3736 | HMAP_FOR_EACH (port, node, &dp->ports) { |
f2eee189 AW |
3737 | if (netdev_is_pmd(port->netdev)) { |
3738 | int numa_id = netdev_get_numa_id(port->netdev); | |
3739 | ||
3740 | dp_netdev_set_pmds_on_numa(dp, numa_id); | |
3741 | } | |
3eb67853 IM |
3742 | /* Distribute only pinned rx queues first to mark threads as isolated */ |
3743 | dp_netdev_add_port_rx_to_pmds(dp, port, &to_reload, true); | |
3744 | } | |
3745 | ||
3746 | /* Distribute remaining non-pinned rx queues to non-isolated PMD threads. */ | |
3747 | HMAP_FOR_EACH (port, node, &dp->ports) { | |
3748 | dp_netdev_add_port_rx_to_pmds(dp, port, &to_reload, false); | |
d0cca6c3 DDP |
3749 | } |
3750 | ||
3751 | HMAPX_FOR_EACH (node, &to_reload) { | |
3752 | pmd = (struct dp_netdev_pmd_thread *) node->data; | |
3753 | dp_netdev_reload_pmd__(pmd); | |
f2eee189 | 3754 | } |
d0cca6c3 DDP |
3755 | |
3756 | hmapx_destroy(&to_reload); | |
f2eee189 AW |
3757 | } |
3758 | ||
b5cbbcf6 AZ |
3759 | static char * |
3760 | dpif_netdev_get_datapath_version(void) | |
3761 | { | |
3762 | return xstrdup("<built-in>"); | |
3763 | } | |
3764 | ||
72865317 | 3765 | static void |
1c1e46ed | 3766 | dp_netdev_flow_used(struct dp_netdev_flow *netdev_flow, int cnt, int size, |
11bfdadd | 3767 | uint16_t tcp_flags, long long now) |
72865317 | 3768 | { |
eb94da30 | 3769 | uint16_t flags; |
72865317 | 3770 | |
eb94da30 DDP |
3771 | atomic_store_relaxed(&netdev_flow->stats.used, now); |
3772 | non_atomic_ullong_add(&netdev_flow->stats.packet_count, cnt); | |
3773 | non_atomic_ullong_add(&netdev_flow->stats.byte_count, size); | |
3774 | atomic_read_relaxed(&netdev_flow->stats.tcp_flags, &flags); | |
3775 | flags |= tcp_flags; | |
3776 | atomic_store_relaxed(&netdev_flow->stats.tcp_flags, flags); | |
51852a57 BP |
3777 | } |
3778 | ||
3779 | static void | |
1c1e46ed AW |
3780 | dp_netdev_count_packet(struct dp_netdev_pmd_thread *pmd, |
3781 | enum dp_stat_type type, int cnt) | |
51852a57 | 3782 | { |
eb94da30 | 3783 | non_atomic_ullong_add(&pmd->stats.n[type], cnt); |
51852a57 BP |
3784 | } |
3785 | ||
623540e4 | 3786 | static int |
e14deea0 | 3787 | dp_netdev_upcall(struct dp_netdev_pmd_thread *pmd, struct dp_packet *packet_, |
7af12bd7 | 3788 | struct flow *flow, struct flow_wildcards *wc, ovs_u128 *ufid, |
623540e4 EJ |
3789 | enum dpif_upcall_type type, const struct nlattr *userdata, |
3790 | struct ofpbuf *actions, struct ofpbuf *put_actions) | |
3791 | { | |
1c1e46ed | 3792 | struct dp_netdev *dp = pmd->dp; |
623540e4 | 3793 | |
623540e4 EJ |
3794 | if (OVS_UNLIKELY(!dp->upcall_cb)) { |
3795 | return ENODEV; | |
3796 | } | |
3797 | ||
3798 | if (OVS_UNLIKELY(!VLOG_DROP_DBG(&upcall_rl))) { | |
3799 | struct ds ds = DS_EMPTY_INITIALIZER; | |
623540e4 | 3800 | char *packet_str; |
cf62fa4c | 3801 | struct ofpbuf key; |
5262eea1 JG |
3802 | struct odp_flow_key_parms odp_parms = { |
3803 | .flow = flow, | |
3804 | .mask = &wc->masks, | |
2494ccd7 | 3805 | .support = dp_netdev_support, |
5262eea1 | 3806 | }; |
623540e4 EJ |
3807 | |
3808 | ofpbuf_init(&key, 0); | |
5262eea1 | 3809 | odp_flow_key_from_flow(&odp_parms, &key); |
cf62fa4c PS |
3810 | packet_str = ofp_packet_to_string(dp_packet_data(packet_), |
3811 | dp_packet_size(packet_)); | |
623540e4 | 3812 | |
6fd6ed71 | 3813 | odp_flow_key_format(key.data, key.size, &ds); |
623540e4 EJ |
3814 | |
3815 | VLOG_DBG("%s: %s upcall:\n%s\n%s", dp->name, | |
3816 | dpif_upcall_type_to_string(type), ds_cstr(&ds), packet_str); | |
3817 | ||
3818 | ofpbuf_uninit(&key); | |
3819 | free(packet_str); | |
6fd6ed71 | 3820 | |
623540e4 EJ |
3821 | ds_destroy(&ds); |
3822 | } | |
3823 | ||
8d8ab6c2 JG |
3824 | return dp->upcall_cb(packet_, flow, ufid, pmd->core_id, type, userdata, |
3825 | actions, wc, put_actions, dp->upcall_aux); | |
623540e4 EJ |
3826 | } |
3827 | ||
9bbf1c3d | 3828 | static inline uint32_t |
048963aa DDP |
3829 | dpif_netdev_packet_get_rss_hash(struct dp_packet *packet, |
3830 | const struct miniflow *mf) | |
9bbf1c3d | 3831 | { |
048963aa | 3832 | uint32_t hash, recirc_depth; |
9bbf1c3d | 3833 | |
f2f44f5d DDP |
3834 | if (OVS_LIKELY(dp_packet_rss_valid(packet))) { |
3835 | hash = dp_packet_get_rss_hash(packet); | |
3836 | } else { | |
9bbf1c3d | 3837 | hash = miniflow_hash_5tuple(mf, 0); |
2bc1bbd2 | 3838 | dp_packet_set_rss_hash(packet, hash); |
9bbf1c3d | 3839 | } |
048963aa DDP |
3840 | |
3841 | /* The RSS hash must account for the recirculation depth to avoid | |
3842 | * collisions in the exact match cache */ | |
3843 | recirc_depth = *recirc_depth_get_unsafe(); | |
3844 | if (OVS_UNLIKELY(recirc_depth)) { | |
3845 | hash = hash_finish(hash, recirc_depth); | |
3846 | dp_packet_set_rss_hash(packet, hash); | |
3847 | } | |
9bbf1c3d DDP |
3848 | return hash; |
3849 | } | |
3850 | ||
f7ce4811 | 3851 | struct packet_batch_per_flow { |
8cbf4f47 DDP |
3852 | unsigned int byte_count; |
3853 | uint16_t tcp_flags; | |
8cbf4f47 DDP |
3854 | struct dp_netdev_flow *flow; |
3855 | ||
1895cc8d | 3856 | struct dp_packet_batch array; |
8cbf4f47 DDP |
3857 | }; |
3858 | ||
3859 | static inline void | |
f7ce4811 PS |
3860 | packet_batch_per_flow_update(struct packet_batch_per_flow *batch, |
3861 | struct dp_packet *packet, | |
3862 | const struct miniflow *mf) | |
8cbf4f47 | 3863 | { |
cf62fa4c | 3864 | batch->byte_count += dp_packet_size(packet); |
1895cc8d PS |
3865 | batch->tcp_flags |= miniflow_get_tcp_flags(mf); |
3866 | batch->array.packets[batch->array.count++] = packet; | |
8cbf4f47 DDP |
3867 | } |
3868 | ||
3869 | static inline void | |
f7ce4811 PS |
3870 | packet_batch_per_flow_init(struct packet_batch_per_flow *batch, |
3871 | struct dp_netdev_flow *flow) | |
8cbf4f47 | 3872 | { |
11e5cf1f | 3873 | flow->batch = batch; |
8cbf4f47 | 3874 | |
11e5cf1f | 3875 | batch->flow = flow; |
1895cc8d | 3876 | dp_packet_batch_init(&batch->array); |
8cbf4f47 DDP |
3877 | batch->byte_count = 0; |
3878 | batch->tcp_flags = 0; | |
8cbf4f47 DDP |
3879 | } |
3880 | ||
3881 | static inline void | |
f7ce4811 PS |
3882 | packet_batch_per_flow_execute(struct packet_batch_per_flow *batch, |
3883 | struct dp_netdev_pmd_thread *pmd, | |
3884 | long long now) | |
8cbf4f47 DDP |
3885 | { |
3886 | struct dp_netdev_actions *actions; | |
3887 | struct dp_netdev_flow *flow = batch->flow; | |
3888 | ||
1895cc8d | 3889 | dp_netdev_flow_used(flow, batch->array.count, batch->byte_count, |
11bfdadd | 3890 | batch->tcp_flags, now); |
8cbf4f47 DDP |
3891 | |
3892 | actions = dp_netdev_flow_get_actions(flow); | |
3893 | ||
66e4ad8a | 3894 | dp_netdev_execute_actions(pmd, &batch->array, true, &flow->flow, |
324c8374 | 3895 | actions->actions, actions->size, now); |
8cbf4f47 DDP |
3896 | } |
3897 | ||
8aaa125d | 3898 | static inline void |
e14deea0 | 3899 | dp_netdev_queue_batches(struct dp_packet *pkt, |
9bbf1c3d | 3900 | struct dp_netdev_flow *flow, const struct miniflow *mf, |
f7ce4811 | 3901 | struct packet_batch_per_flow *batches, size_t *n_batches) |
9bbf1c3d | 3902 | { |
f7ce4811 | 3903 | struct packet_batch_per_flow *batch = flow->batch; |
11e5cf1f | 3904 | |
f9fe365b AZ |
3905 | if (OVS_UNLIKELY(!batch)) { |
3906 | batch = &batches[(*n_batches)++]; | |
f7ce4811 | 3907 | packet_batch_per_flow_init(batch, flow); |
9bbf1c3d DDP |
3908 | } |
3909 | ||
f7ce4811 | 3910 | packet_batch_per_flow_update(batch, pkt, mf); |
9bbf1c3d DDP |
3911 | } |
3912 | ||
9bbf1c3d | 3913 | /* Try to process all ('cnt') the 'packets' using only the exact match cache |
a90ed026 | 3914 | * 'pmd->flow_cache'. If a flow is not found for a packet 'packets[i]', the |
8aaa125d DDP |
3915 | * miniflow is copied into 'keys' and the packet pointer is moved at the |
3916 | * beginning of the 'packets' array. | |
9bbf1c3d DDP |
3917 | * |
3918 | * The function returns the number of packets that needs to be processed in the | |
3919 | * 'packets' array (they have been moved to the beginning of the vector). | |
a90ed026 DDP |
3920 | * |
3921 | * If 'md_is_valid' is false, the metadata in 'packets' is not valid and must be | |
3922 | * initialized by this function using 'port_no'. | |
9bbf1c3d DDP |
3923 | */ |
3924 | static inline size_t | |
1895cc8d PS |
3925 | emc_processing(struct dp_netdev_pmd_thread *pmd, struct dp_packet_batch *packets_, |
3926 | struct netdev_flow_key *keys, | |
f7ce4811 | 3927 | struct packet_batch_per_flow batches[], size_t *n_batches, |
a90ed026 | 3928 | bool md_is_valid, odp_port_t port_no) |
72865317 | 3929 | { |
65f13b50 | 3930 | struct emc_cache *flow_cache = &pmd->flow_cache; |
b89c678b | 3931 | struct netdev_flow_key *key = &keys[0]; |
3d88a620 | 3932 | size_t i, n_missed = 0, n_dropped = 0; |
1895cc8d PS |
3933 | struct dp_packet **packets = packets_->packets; |
3934 | int cnt = packets_->count; | |
8cbf4f47 | 3935 | |
84d6d5eb | 3936 | for (i = 0; i < cnt; i++) { |
9bbf1c3d | 3937 | struct dp_netdev_flow *flow; |
5a2fed48 | 3938 | struct dp_packet *packet = packets[i]; |
9bbf1c3d | 3939 | |
5a2fed48 AZ |
3940 | if (OVS_UNLIKELY(dp_packet_size(packet) < ETH_HEADER_LEN)) { |
3941 | dp_packet_delete(packet); | |
3d88a620 | 3942 | n_dropped++; |
84d6d5eb EJ |
3943 | continue; |
3944 | } | |
8cbf4f47 | 3945 | |
72a5e2b8 | 3946 | if (i != cnt - 1) { |
a90ed026 | 3947 | /* Prefetch next packet data and metadata. */ |
72a5e2b8 | 3948 | OVS_PREFETCH(dp_packet_data(packets[i+1])); |
a90ed026 | 3949 | pkt_metadata_prefetch_init(&packets[i+1]->md); |
72a5e2b8 DDP |
3950 | } |
3951 | ||
a90ed026 DDP |
3952 | if (!md_is_valid) { |
3953 | pkt_metadata_init(&packet->md, port_no); | |
3954 | } | |
5a2fed48 | 3955 | miniflow_extract(packet, &key->mf); |
d262ac2c | 3956 | key->len = 0; /* Not computed yet. */ |
5a2fed48 | 3957 | key->hash = dpif_netdev_packet_get_rss_hash(packet, &key->mf); |
9bbf1c3d | 3958 | |
d262ac2c | 3959 | flow = emc_lookup(flow_cache, key); |
8aaa125d | 3960 | if (OVS_LIKELY(flow)) { |
5a2fed48 | 3961 | dp_netdev_queue_batches(packet, flow, &key->mf, batches, |
8aaa125d DDP |
3962 | n_batches); |
3963 | } else { | |
d1aa0b94 AZ |
3964 | /* Exact match cache missed. Group missed packets together at |
3965 | * the beginning of the 'packets' array. */ | |
b89c678b | 3966 | packets[n_missed] = packet; |
400486f7 DDP |
3967 | /* 'key[n_missed]' contains the key of the current packet and it |
3968 | * must be returned to the caller. The next key should be extracted | |
3969 | * to 'keys[n_missed + 1]'. */ | |
3970 | key = &keys[++n_missed]; | |
9bbf1c3d DDP |
3971 | } |
3972 | } | |
3973 | ||
3d88a620 | 3974 | dp_netdev_count_packet(pmd, DP_STAT_EXACT_HIT, cnt - n_dropped - n_missed); |
4f150744 | 3975 | |
3d88a620 | 3976 | return n_missed; |
9bbf1c3d DDP |
3977 | } |
3978 | ||
a260d966 PS |
3979 | static inline void |
3980 | handle_packet_upcall(struct dp_netdev_pmd_thread *pmd, struct dp_packet *packet, | |
3981 | const struct netdev_flow_key *key, | |
3982 | struct ofpbuf *actions, struct ofpbuf *put_actions, | |
324c8374 | 3983 | int *lost_cnt, long long now) |
a260d966 PS |
3984 | { |
3985 | struct ofpbuf *add_actions; | |
3986 | struct dp_packet_batch b; | |
3987 | struct match match; | |
3988 | ovs_u128 ufid; | |
3989 | int error; | |
3990 | ||
3991 | match.tun_md.valid = false; | |
3992 | miniflow_expand(&key->mf, &match.flow); | |
3993 | ||
3994 | ofpbuf_clear(actions); | |
3995 | ofpbuf_clear(put_actions); | |
3996 | ||
3997 | dpif_flow_hash(pmd->dp->dpif, &match.flow, sizeof match.flow, &ufid); | |
3998 | error = dp_netdev_upcall(pmd, packet, &match.flow, &match.wc, | |
3999 | &ufid, DPIF_UC_MISS, NULL, actions, | |
4000 | put_actions); | |
4001 | if (OVS_UNLIKELY(error && error != ENOSPC)) { | |
4002 | dp_packet_delete(packet); | |
4003 | (*lost_cnt)++; | |
4004 | return; | |
4005 | } | |
4006 | ||
4007 | /* The Netlink encoding of datapath flow keys cannot express | |
4008 | * wildcarding the presence of a VLAN tag. Instead, a missing VLAN | |
4009 | * tag is interpreted as exact match on the fact that there is no | |
4010 | * VLAN. Unless we refactor a lot of code that translates between | |
4011 | * Netlink and struct flow representations, we have to do the same | |
4012 | * here. */ | |
4013 | if (!match.wc.masks.vlan_tci) { | |
4014 | match.wc.masks.vlan_tci = htons(0xffff); | |
4015 | } | |
4016 | ||
4017 | /* We can't allow the packet batching in the next loop to execute | |
4018 | * the actions. Otherwise, if there are any slow path actions, | |
4019 | * we'll send the packet up twice. */ | |
4020 | packet_batch_init_packet(&b, packet); | |
66e4ad8a | 4021 | dp_netdev_execute_actions(pmd, &b, true, &match.flow, |
324c8374 | 4022 | actions->data, actions->size, now); |
a260d966 PS |
4023 | |
4024 | add_actions = put_actions->size ? put_actions : actions; | |
4025 | if (OVS_LIKELY(error != ENOSPC)) { | |
4026 | struct dp_netdev_flow *netdev_flow; | |
4027 | ||
4028 | /* XXX: There's a race window where a flow covering this packet | |
4029 | * could have already been installed since we last did the flow | |
4030 | * lookup before upcall. This could be solved by moving the | |
4031 | * mutex lock outside the loop, but that's an awful long time | |
4032 | * to be locking everyone out of making flow installs. If we | |
4033 | * move to a per-core classifier, it would be reasonable. */ | |
4034 | ovs_mutex_lock(&pmd->flow_mutex); | |
3453b4d6 | 4035 | netdev_flow = dp_netdev_pmd_lookup_flow(pmd, key, NULL); |
a260d966 PS |
4036 | if (OVS_LIKELY(!netdev_flow)) { |
4037 | netdev_flow = dp_netdev_flow_add(pmd, &match, &ufid, | |
4038 | add_actions->data, | |
4039 | add_actions->size); | |
4040 | } | |
4041 | ovs_mutex_unlock(&pmd->flow_mutex); | |
4042 | ||
4043 | emc_insert(&pmd->flow_cache, key, netdev_flow); | |
4044 | } | |
4045 | } | |
4046 | ||
9bbf1c3d | 4047 | static inline void |
65f13b50 | 4048 | fast_path_processing(struct dp_netdev_pmd_thread *pmd, |
1895cc8d | 4049 | struct dp_packet_batch *packets_, |
8aaa125d | 4050 | struct netdev_flow_key *keys, |
324c8374 | 4051 | struct packet_batch_per_flow batches[], size_t *n_batches, |
3453b4d6 | 4052 | odp_port_t in_port, |
324c8374 | 4053 | long long now) |
9bbf1c3d | 4054 | { |
1895cc8d | 4055 | int cnt = packets_->count; |
1a0d5831 | 4056 | #if !defined(__CHECKER__) && !defined(_WIN32) |
9bbf1c3d DDP |
4057 | const size_t PKT_ARRAY_SIZE = cnt; |
4058 | #else | |
1a0d5831 | 4059 | /* Sparse or MSVC doesn't like variable length array. */ |
cd159f1a | 4060 | enum { PKT_ARRAY_SIZE = NETDEV_MAX_BURST }; |
9bbf1c3d | 4061 | #endif |
1895cc8d | 4062 | struct dp_packet **packets = packets_->packets; |
3453b4d6 | 4063 | struct dpcls *cls; |
0de8783a | 4064 | struct dpcls_rule *rules[PKT_ARRAY_SIZE]; |
65f13b50 AW |
4065 | struct dp_netdev *dp = pmd->dp; |
4066 | struct emc_cache *flow_cache = &pmd->flow_cache; | |
8aaa125d | 4067 | int miss_cnt = 0, lost_cnt = 0; |
3453b4d6 | 4068 | int lookup_cnt = 0, add_lookup_cnt; |
9bbf1c3d | 4069 | bool any_miss; |
8aaa125d | 4070 | size_t i; |
9bbf1c3d DDP |
4071 | |
4072 | for (i = 0; i < cnt; i++) { | |
0de8783a | 4073 | /* Key length is needed in all the cases, hash computed on demand. */ |
361d808d | 4074 | keys[i].len = netdev_flow_key_size(miniflow_n_values(&keys[i].mf)); |
9bbf1c3d | 4075 | } |
3453b4d6 JS |
4076 | /* Get the classifier for the in_port */ |
4077 | cls = dp_netdev_pmd_lookup_dpcls(pmd, in_port); | |
4078 | if (OVS_LIKELY(cls)) { | |
4079 | any_miss = !dpcls_lookup(cls, keys, rules, cnt, &lookup_cnt); | |
4080 | } else { | |
4081 | any_miss = true; | |
4082 | memset(rules, 0, sizeof(rules)); | |
4083 | } | |
623540e4 EJ |
4084 | if (OVS_UNLIKELY(any_miss) && !fat_rwlock_tryrdlock(&dp->upcall_rwlock)) { |
4085 | uint64_t actions_stub[512 / 8], slow_stub[512 / 8]; | |
4086 | struct ofpbuf actions, put_actions; | |
623540e4 EJ |
4087 | |
4088 | ofpbuf_use_stub(&actions, actions_stub, sizeof actions_stub); | |
4089 | ofpbuf_use_stub(&put_actions, slow_stub, sizeof slow_stub); | |
4090 | ||
4091 | for (i = 0; i < cnt; i++) { | |
0de8783a | 4092 | struct dp_netdev_flow *netdev_flow; |
623540e4 | 4093 | |
0de8783a | 4094 | if (OVS_LIKELY(rules[i])) { |
623540e4 EJ |
4095 | continue; |
4096 | } | |
4097 | ||
4098 | /* It's possible that an earlier slow path execution installed | |
0de8783a | 4099 | * a rule covering this flow. In this case, it's a lot cheaper |
623540e4 | 4100 | * to catch it here than execute a miss. */ |
3453b4d6 JS |
4101 | netdev_flow = dp_netdev_pmd_lookup_flow(pmd, &keys[i], |
4102 | &add_lookup_cnt); | |
623540e4 | 4103 | if (netdev_flow) { |
3453b4d6 | 4104 | lookup_cnt += add_lookup_cnt; |
0de8783a | 4105 | rules[i] = &netdev_flow->cr; |
623540e4 EJ |
4106 | continue; |
4107 | } | |
4108 | ||
60fc3b7b | 4109 | miss_cnt++; |
324c8374 IM |
4110 | handle_packet_upcall(pmd, packets[i], &keys[i], &actions, |
4111 | &put_actions, &lost_cnt, now); | |
623540e4 EJ |
4112 | } |
4113 | ||
4114 | ofpbuf_uninit(&actions); | |
4115 | ofpbuf_uninit(&put_actions); | |
4116 | fat_rwlock_unlock(&dp->upcall_rwlock); | |
60fc3b7b | 4117 | dp_netdev_count_packet(pmd, DP_STAT_LOST, lost_cnt); |
ac8c2081 | 4118 | } else if (OVS_UNLIKELY(any_miss)) { |
ac8c2081 | 4119 | for (i = 0; i < cnt; i++) { |
0de8783a | 4120 | if (OVS_UNLIKELY(!rules[i])) { |
e14deea0 | 4121 | dp_packet_delete(packets[i]); |
8aaa125d DDP |
4122 | lost_cnt++; |
4123 | miss_cnt++; | |
ac8c2081 DDP |
4124 | } |
4125 | } | |
623540e4 | 4126 | } |
84d6d5eb | 4127 | |
8cbf4f47 | 4128 | for (i = 0; i < cnt; i++) { |
e14deea0 | 4129 | struct dp_packet *packet = packets[i]; |
84d6d5eb | 4130 | struct dp_netdev_flow *flow; |
8cbf4f47 | 4131 | |
0de8783a | 4132 | if (OVS_UNLIKELY(!rules[i])) { |
84d6d5eb EJ |
4133 | continue; |
4134 | } | |
4135 | ||
84d6d5eb | 4136 | flow = dp_netdev_flow_cast(rules[i]); |
0de8783a | 4137 | |
0de8783a | 4138 | emc_insert(flow_cache, &keys[i], flow); |
8aaa125d | 4139 | dp_netdev_queue_batches(packet, flow, &keys[i].mf, batches, n_batches); |
8cbf4f47 DDP |
4140 | } |
4141 | ||
8aaa125d | 4142 | dp_netdev_count_packet(pmd, DP_STAT_MASKED_HIT, cnt - miss_cnt); |
3453b4d6 | 4143 | dp_netdev_count_packet(pmd, DP_STAT_LOOKUP_HIT, lookup_cnt); |
8aaa125d DDP |
4144 | dp_netdev_count_packet(pmd, DP_STAT_MISS, miss_cnt); |
4145 | dp_netdev_count_packet(pmd, DP_STAT_LOST, lost_cnt); | |
72865317 BP |
4146 | } |
4147 | ||
a90ed026 DDP |
4148 | /* Packets enter the datapath from a port (or from recirculation) here. |
4149 | * | |
4150 | * For performance reasons a caller may choose not to initialize the metadata | |
4151 | * in 'packets': in this case 'mdinit' is false and this function needs to | |
4152 | * initialize it using 'port_no'. If the metadata in 'packets' is already | |
4153 | * valid, 'md_is_valid' must be true and 'port_no' will be ignored. */ | |
adcf00ba | 4154 | static void |
a90ed026 | 4155 | dp_netdev_input__(struct dp_netdev_pmd_thread *pmd, |
1895cc8d | 4156 | struct dp_packet_batch *packets, |
a90ed026 | 4157 | bool md_is_valid, odp_port_t port_no) |
9bbf1c3d | 4158 | { |
1895cc8d | 4159 | int cnt = packets->count; |
1a0d5831 | 4160 | #if !defined(__CHECKER__) && !defined(_WIN32) |
9bbf1c3d DDP |
4161 | const size_t PKT_ARRAY_SIZE = cnt; |
4162 | #else | |
1a0d5831 | 4163 | /* Sparse or MSVC doesn't like variable length array. */ |
cd159f1a | 4164 | enum { PKT_ARRAY_SIZE = NETDEV_MAX_BURST }; |
9bbf1c3d DDP |
4165 | #endif |
4166 | struct netdev_flow_key keys[PKT_ARRAY_SIZE]; | |
f7ce4811 | 4167 | struct packet_batch_per_flow batches[PKT_ARRAY_SIZE]; |
11bfdadd | 4168 | long long now = time_msec(); |
8aaa125d | 4169 | size_t newcnt, n_batches, i; |
3453b4d6 | 4170 | odp_port_t in_port; |
9bbf1c3d | 4171 | |
8aaa125d | 4172 | n_batches = 0; |
1895cc8d | 4173 | newcnt = emc_processing(pmd, packets, keys, batches, &n_batches, |
a90ed026 | 4174 | md_is_valid, port_no); |
9bbf1c3d | 4175 | if (OVS_UNLIKELY(newcnt)) { |
1895cc8d | 4176 | packets->count = newcnt; |
3453b4d6 JS |
4177 | /* Get ingress port from first packet's metadata. */ |
4178 | in_port = packets->packets[0]->md.in_port.odp_port; | |
4179 | fast_path_processing(pmd, packets, keys, batches, &n_batches, in_port, now); | |
8aaa125d DDP |
4180 | } |
4181 | ||
603f2ce0 EJ |
4182 | for (i = 0; i < n_batches; i++) { |
4183 | batches[i].flow->batch = NULL; | |
4184 | } | |
4185 | ||
8aaa125d | 4186 | for (i = 0; i < n_batches; i++) { |
f7ce4811 | 4187 | packet_batch_per_flow_execute(&batches[i], pmd, now); |
9bbf1c3d DDP |
4188 | } |
4189 | } | |
4190 | ||
a90ed026 DDP |
4191 | static void |
4192 | dp_netdev_input(struct dp_netdev_pmd_thread *pmd, | |
1895cc8d | 4193 | struct dp_packet_batch *packets, |
a90ed026 DDP |
4194 | odp_port_t port_no) |
4195 | { | |
3453b4d6 | 4196 | dp_netdev_input__(pmd, packets, false, port_no); |
a90ed026 DDP |
4197 | } |
4198 | ||
4199 | static void | |
4200 | dp_netdev_recirculate(struct dp_netdev_pmd_thread *pmd, | |
1895cc8d | 4201 | struct dp_packet_batch *packets) |
a90ed026 | 4202 | { |
3453b4d6 | 4203 | dp_netdev_input__(pmd, packets, true, 0); |
a90ed026 DDP |
4204 | } |
4205 | ||
9080a111 | 4206 | struct dp_netdev_execute_aux { |
65f13b50 | 4207 | struct dp_netdev_pmd_thread *pmd; |
324c8374 | 4208 | long long now; |
66e4ad8a | 4209 | const struct flow *flow; |
9080a111 JR |
4210 | }; |
4211 | ||
e4e74c3a AW |
4212 | static void |
4213 | dpif_netdev_register_dp_purge_cb(struct dpif *dpif, dp_purge_callback *cb, | |
4214 | void *aux) | |
4215 | { | |
4216 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
4217 | dp->dp_purge_aux = aux; | |
4218 | dp->dp_purge_cb = cb; | |
4219 | } | |
4220 | ||
6b31e073 | 4221 | static void |
623540e4 EJ |
4222 | dpif_netdev_register_upcall_cb(struct dpif *dpif, upcall_callback *cb, |
4223 | void *aux) | |
6b31e073 RW |
4224 | { |
4225 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
623540e4 | 4226 | dp->upcall_aux = aux; |
6b31e073 RW |
4227 | dp->upcall_cb = cb; |
4228 | } | |
4229 | ||
324c8374 IM |
4230 | static void |
4231 | dpif_netdev_xps_revalidate_pmd(const struct dp_netdev_pmd_thread *pmd, | |
4232 | long long now, bool purge) | |
4233 | { | |
4234 | struct tx_port *tx; | |
4235 | struct dp_netdev_port *port; | |
4236 | long long interval; | |
4237 | ||
4238 | HMAP_FOR_EACH (tx, node, &pmd->port_cache) { | |
9f7a3035 | 4239 | if (!tx->port->dynamic_txqs) { |
324c8374 IM |
4240 | continue; |
4241 | } | |
4242 | interval = now - tx->last_used; | |
4243 | if (tx->qid >= 0 && (purge || interval >= XPS_TIMEOUT_MS)) { | |
4244 | port = tx->port; | |
4245 | ovs_mutex_lock(&port->txq_used_mutex); | |
4246 | port->txq_used[tx->qid]--; | |
4247 | ovs_mutex_unlock(&port->txq_used_mutex); | |
4248 | tx->qid = -1; | |
4249 | } | |
4250 | } | |
4251 | } | |
4252 | ||
4253 | static int | |
4254 | dpif_netdev_xps_get_tx_qid(const struct dp_netdev_pmd_thread *pmd, | |
4255 | struct tx_port *tx, long long now) | |
4256 | { | |
4257 | struct dp_netdev_port *port; | |
4258 | long long interval; | |
4259 | int i, min_cnt, min_qid; | |
4260 | ||
4261 | if (OVS_UNLIKELY(!now)) { | |
4262 | now = time_msec(); | |
4263 | } | |
4264 | ||
4265 | interval = now - tx->last_used; | |
4266 | tx->last_used = now; | |
4267 | ||
4268 | if (OVS_LIKELY(tx->qid >= 0 && interval < XPS_TIMEOUT_MS)) { | |
4269 | return tx->qid; | |
4270 | } | |
4271 | ||
4272 | port = tx->port; | |
4273 | ||
4274 | ovs_mutex_lock(&port->txq_used_mutex); | |
4275 | if (tx->qid >= 0) { | |
4276 | port->txq_used[tx->qid]--; | |
4277 | tx->qid = -1; | |
4278 | } | |
4279 | ||
4280 | min_cnt = -1; | |
4281 | min_qid = 0; | |
4282 | for (i = 0; i < netdev_n_txq(port->netdev); i++) { | |
4283 | if (port->txq_used[i] < min_cnt || min_cnt == -1) { | |
4284 | min_cnt = port->txq_used[i]; | |
4285 | min_qid = i; | |
4286 | } | |
4287 | } | |
4288 | ||
4289 | port->txq_used[min_qid]++; | |
4290 | tx->qid = min_qid; | |
4291 | ||
4292 | ovs_mutex_unlock(&port->txq_used_mutex); | |
4293 | ||
4294 | dpif_netdev_xps_revalidate_pmd(pmd, now, false); | |
4295 | ||
4296 | VLOG_DBG("Core %d: New TX queue ID %d for port \'%s\'.", | |
4297 | pmd->core_id, tx->qid, netdev_get_name(tx->port->netdev)); | |
4298 | return min_qid; | |
4299 | } | |
4300 | ||
d0cca6c3 DDP |
4301 | static struct tx_port * |
4302 | pmd_tx_port_cache_lookup(const struct dp_netdev_pmd_thread *pmd, | |
4303 | odp_port_t port_no) | |
4304 | { | |
4305 | return tx_port_lookup(&pmd->port_cache, port_no); | |
4306 | } | |
4307 | ||
a36de779 | 4308 | static int |
d0cca6c3 | 4309 | push_tnl_action(const struct dp_netdev_pmd_thread *pmd, |
1895cc8d PS |
4310 | const struct nlattr *attr, |
4311 | struct dp_packet_batch *batch) | |
a36de779 | 4312 | { |
d0cca6c3 | 4313 | struct tx_port *tun_port; |
a36de779 | 4314 | const struct ovs_action_push_tnl *data; |
4c742796 | 4315 | int err; |
a36de779 PS |
4316 | |
4317 | data = nl_attr_get(attr); | |
4318 | ||
d0cca6c3 | 4319 | tun_port = pmd_tx_port_cache_lookup(pmd, u32_to_odp(data->tnl_port)); |
a36de779 | 4320 | if (!tun_port) { |
4c742796 PS |
4321 | err = -EINVAL; |
4322 | goto error; | |
a36de779 | 4323 | } |
324c8374 | 4324 | err = netdev_push_header(tun_port->port->netdev, batch, data); |
4c742796 PS |
4325 | if (!err) { |
4326 | return 0; | |
4327 | } | |
4328 | error: | |
4329 | dp_packet_delete_batch(batch, true); | |
4330 | return err; | |
a36de779 PS |
4331 | } |
4332 | ||
66525ef3 PS |
4333 | static void |
4334 | dp_execute_userspace_action(struct dp_netdev_pmd_thread *pmd, | |
4335 | struct dp_packet *packet, bool may_steal, | |
4336 | struct flow *flow, ovs_u128 *ufid, | |
4337 | struct ofpbuf *actions, | |
324c8374 | 4338 | const struct nlattr *userdata, long long now) |
66525ef3 PS |
4339 | { |
4340 | struct dp_packet_batch b; | |
4341 | int error; | |
4342 | ||
4343 | ofpbuf_clear(actions); | |
4344 | ||
4345 | error = dp_netdev_upcall(pmd, packet, flow, NULL, ufid, | |
4346 | DPIF_UC_ACTION, userdata, actions, | |
4347 | NULL); | |
4348 | if (!error || error == ENOSPC) { | |
4349 | packet_batch_init_packet(&b, packet); | |
66e4ad8a | 4350 | dp_netdev_execute_actions(pmd, &b, may_steal, flow, |
324c8374 | 4351 | actions->data, actions->size, now); |
66525ef3 PS |
4352 | } else if (may_steal) { |
4353 | dp_packet_delete(packet); | |
4354 | } | |
4355 | } | |
4356 | ||
a36de779 | 4357 | static void |
1895cc8d | 4358 | dp_execute_cb(void *aux_, struct dp_packet_batch *packets_, |
09f9da0b | 4359 | const struct nlattr *a, bool may_steal) |
9080a111 JR |
4360 | { |
4361 | struct dp_netdev_execute_aux *aux = aux_; | |
623540e4 | 4362 | uint32_t *depth = recirc_depth_get(); |
28e2fa02 DDP |
4363 | struct dp_netdev_pmd_thread *pmd = aux->pmd; |
4364 | struct dp_netdev *dp = pmd->dp; | |
09f9da0b | 4365 | int type = nl_attr_type(a); |
324c8374 | 4366 | long long now = aux->now; |
d0cca6c3 | 4367 | struct tx_port *p; |
9080a111 | 4368 | |
09f9da0b JR |
4369 | switch ((enum ovs_action_attr)type) { |
4370 | case OVS_ACTION_ATTR_OUTPUT: | |
d0cca6c3 | 4371 | p = pmd_tx_port_cache_lookup(pmd, u32_to_odp(nl_attr_get_u32(a))); |
26a5075b | 4372 | if (OVS_LIKELY(p)) { |
347ba9bb | 4373 | int tx_qid; |
324c8374 | 4374 | bool dynamic_txqs; |
347ba9bb | 4375 | |
324c8374 IM |
4376 | dynamic_txqs = p->port->dynamic_txqs; |
4377 | if (dynamic_txqs) { | |
4378 | tx_qid = dpif_netdev_xps_get_tx_qid(pmd, p, now); | |
4379 | } else { | |
4380 | atomic_read_relaxed(&pmd->static_tx_qid, &tx_qid); | |
4381 | } | |
347ba9bb | 4382 | |
324c8374 IM |
4383 | netdev_send(p->port->netdev, tx_qid, packets_, may_steal, |
4384 | dynamic_txqs); | |
ac8c2081 | 4385 | return; |
8a4e3a85 | 4386 | } |
09f9da0b JR |
4387 | break; |
4388 | ||
a36de779 PS |
4389 | case OVS_ACTION_ATTR_TUNNEL_PUSH: |
4390 | if (*depth < MAX_RECIRC_DEPTH) { | |
1895cc8d | 4391 | struct dp_packet_batch tnl_pkt; |
aaca4fe0 | 4392 | struct dp_packet_batch *orig_packets_ = packets_; |
a36de779 PS |
4393 | int err; |
4394 | ||
4395 | if (!may_steal) { | |
1895cc8d PS |
4396 | dp_packet_batch_clone(&tnl_pkt, packets_); |
4397 | packets_ = &tnl_pkt; | |
aaca4fe0 | 4398 | dp_packet_batch_reset_cutlen(orig_packets_); |
a36de779 PS |
4399 | } |
4400 | ||
aaca4fe0 WT |
4401 | dp_packet_batch_apply_cutlen(packets_); |
4402 | ||
d0cca6c3 | 4403 | err = push_tnl_action(pmd, a, packets_); |
a36de779 PS |
4404 | if (!err) { |
4405 | (*depth)++; | |
1895cc8d | 4406 | dp_netdev_recirculate(pmd, packets_); |
a36de779 | 4407 | (*depth)--; |
a36de779 PS |
4408 | } |
4409 | return; | |
4410 | } | |
4411 | break; | |
4412 | ||
4413 | case OVS_ACTION_ATTR_TUNNEL_POP: | |
4414 | if (*depth < MAX_RECIRC_DEPTH) { | |
aaca4fe0 | 4415 | struct dp_packet_batch *orig_packets_ = packets_; |
a36de779 PS |
4416 | odp_port_t portno = u32_to_odp(nl_attr_get_u32(a)); |
4417 | ||
d0cca6c3 | 4418 | p = pmd_tx_port_cache_lookup(pmd, portno); |
a36de779 | 4419 | if (p) { |
1895cc8d | 4420 | struct dp_packet_batch tnl_pkt; |
9235b479 | 4421 | int i; |
a36de779 PS |
4422 | |
4423 | if (!may_steal) { | |
aaca4fe0 WT |
4424 | dp_packet_batch_clone(&tnl_pkt, packets_); |
4425 | packets_ = &tnl_pkt; | |
4426 | dp_packet_batch_reset_cutlen(orig_packets_); | |
a36de779 PS |
4427 | } |
4428 | ||
aaca4fe0 WT |
4429 | dp_packet_batch_apply_cutlen(packets_); |
4430 | ||
324c8374 | 4431 | netdev_pop_header(p->port->netdev, packets_); |
1895cc8d | 4432 | if (!packets_->count) { |
1c8f98d9 PS |
4433 | return; |
4434 | } | |
9235b479 PS |
4435 | |
4436 | for (i = 0; i < packets_->count; i++) { | |
4437 | packets_->packets[i]->md.in_port.odp_port = portno; | |
a36de779 | 4438 | } |
9235b479 PS |
4439 | |
4440 | (*depth)++; | |
4441 | dp_netdev_recirculate(pmd, packets_); | |
4442 | (*depth)--; | |
a36de779 PS |
4443 | return; |
4444 | } | |
4445 | } | |
4446 | break; | |
4447 | ||
623540e4 EJ |
4448 | case OVS_ACTION_ATTR_USERSPACE: |
4449 | if (!fat_rwlock_tryrdlock(&dp->upcall_rwlock)) { | |
aaca4fe0 | 4450 | struct dp_packet_batch *orig_packets_ = packets_; |
1895cc8d | 4451 | struct dp_packet **packets = packets_->packets; |
623540e4 | 4452 | const struct nlattr *userdata; |
aaca4fe0 | 4453 | struct dp_packet_batch usr_pkt; |
623540e4 EJ |
4454 | struct ofpbuf actions; |
4455 | struct flow flow; | |
7af12bd7 | 4456 | ovs_u128 ufid; |
aaca4fe0 | 4457 | bool clone = false; |
1c8f98d9 | 4458 | int i; |
4fc65926 | 4459 | |
623540e4 EJ |
4460 | userdata = nl_attr_find_nested(a, OVS_USERSPACE_ATTR_USERDATA); |
4461 | ofpbuf_init(&actions, 0); | |
8cbf4f47 | 4462 | |
aaca4fe0 WT |
4463 | if (packets_->trunc) { |
4464 | if (!may_steal) { | |
4465 | dp_packet_batch_clone(&usr_pkt, packets_); | |
4466 | packets_ = &usr_pkt; | |
4467 | packets = packets_->packets; | |
4468 | clone = true; | |
4469 | dp_packet_batch_reset_cutlen(orig_packets_); | |
4470 | } | |
4471 | ||
4472 | dp_packet_batch_apply_cutlen(packets_); | |
4473 | } | |
4474 | ||
1895cc8d | 4475 | for (i = 0; i < packets_->count; i++) { |
cf62fa4c | 4476 | flow_extract(packets[i], &flow); |
7af12bd7 | 4477 | dpif_flow_hash(dp->dpif, &flow, sizeof flow, &ufid); |
66525ef3 | 4478 | dp_execute_userspace_action(pmd, packets[i], may_steal, &flow, |
324c8374 | 4479 | &ufid, &actions, userdata, now); |
db73f716 | 4480 | } |
aaca4fe0 WT |
4481 | |
4482 | if (clone) { | |
4483 | dp_packet_delete_batch(packets_, true); | |
4484 | } | |
4485 | ||
623540e4 EJ |
4486 | ofpbuf_uninit(&actions); |
4487 | fat_rwlock_unlock(&dp->upcall_rwlock); | |
6b31e073 | 4488 | |
ac8c2081 DDP |
4489 | return; |
4490 | } | |
09f9da0b | 4491 | break; |
572f732a | 4492 | |
adcf00ba AZ |
4493 | case OVS_ACTION_ATTR_RECIRC: |
4494 | if (*depth < MAX_RECIRC_DEPTH) { | |
1895cc8d | 4495 | struct dp_packet_batch recirc_pkts; |
1c8f98d9 | 4496 | int i; |
572f732a | 4497 | |
28e2fa02 | 4498 | if (!may_steal) { |
1895cc8d PS |
4499 | dp_packet_batch_clone(&recirc_pkts, packets_); |
4500 | packets_ = &recirc_pkts; | |
28e2fa02 | 4501 | } |
8cbf4f47 | 4502 | |
1895cc8d PS |
4503 | for (i = 0; i < packets_->count; i++) { |
4504 | packets_->packets[i]->md.recirc_id = nl_attr_get_u32(a); | |
8cbf4f47 | 4505 | } |
28e2fa02 DDP |
4506 | |
4507 | (*depth)++; | |
1895cc8d | 4508 | dp_netdev_recirculate(pmd, packets_); |
adcf00ba AZ |
4509 | (*depth)--; |
4510 | ||
ac8c2081 | 4511 | return; |
adcf00ba | 4512 | } |
ac8c2081 DDP |
4513 | |
4514 | VLOG_WARN("Packet dropped. Max recirculation depth exceeded."); | |
572f732a | 4515 | break; |
572f732a | 4516 | |
5cf3edb3 DDP |
4517 | case OVS_ACTION_ATTR_CT: { |
4518 | const struct nlattr *b; | |
4519 | bool commit = false; | |
4520 | unsigned int left; | |
4521 | uint16_t zone = 0; | |
4522 | const char *helper = NULL; | |
4523 | const uint32_t *setmark = NULL; | |
4524 | const struct ovs_key_ct_labels *setlabel = NULL; | |
4525 | ||
4526 | NL_ATTR_FOR_EACH_UNSAFE (b, left, nl_attr_get(a), | |
4527 | nl_attr_get_size(a)) { | |
4528 | enum ovs_ct_attr sub_type = nl_attr_type(b); | |
4529 | ||
4530 | switch(sub_type) { | |
4531 | case OVS_CT_ATTR_COMMIT: | |
4532 | commit = true; | |
4533 | break; | |
4534 | case OVS_CT_ATTR_ZONE: | |
4535 | zone = nl_attr_get_u16(b); | |
4536 | break; | |
4537 | case OVS_CT_ATTR_HELPER: | |
4538 | helper = nl_attr_get_string(b); | |
4539 | break; | |
4540 | case OVS_CT_ATTR_MARK: | |
4541 | setmark = nl_attr_get(b); | |
4542 | break; | |
4543 | case OVS_CT_ATTR_LABELS: | |
4544 | setlabel = nl_attr_get(b); | |
4545 | break; | |
4546 | case OVS_CT_ATTR_NAT: | |
4547 | case OVS_CT_ATTR_UNSPEC: | |
4548 | case __OVS_CT_ATTR_MAX: | |
4549 | OVS_NOT_REACHED(); | |
4550 | } | |
4551 | } | |
4552 | ||
66e4ad8a DDP |
4553 | conntrack_execute(&dp->conntrack, packets_, aux->flow->dl_type, commit, |
4554 | zone, setmark, setlabel, helper); | |
07659514 | 4555 | break; |
5cf3edb3 | 4556 | } |
07659514 | 4557 | |
09f9da0b JR |
4558 | case OVS_ACTION_ATTR_PUSH_VLAN: |
4559 | case OVS_ACTION_ATTR_POP_VLAN: | |
4560 | case OVS_ACTION_ATTR_PUSH_MPLS: | |
4561 | case OVS_ACTION_ATTR_POP_MPLS: | |
4562 | case OVS_ACTION_ATTR_SET: | |
6d670e7f | 4563 | case OVS_ACTION_ATTR_SET_MASKED: |
09f9da0b | 4564 | case OVS_ACTION_ATTR_SAMPLE: |
53e1d6f1 | 4565 | case OVS_ACTION_ATTR_HASH: |
09f9da0b | 4566 | case OVS_ACTION_ATTR_UNSPEC: |
aaca4fe0 | 4567 | case OVS_ACTION_ATTR_TRUNC: |
09f9da0b JR |
4568 | case __OVS_ACTION_ATTR_MAX: |
4569 | OVS_NOT_REACHED(); | |
da546e07 | 4570 | } |
ac8c2081 | 4571 | |
1895cc8d | 4572 | dp_packet_delete_batch(packets_, may_steal); |
98403001 BP |
4573 | } |
4574 | ||
4edb9ae9 | 4575 | static void |
65f13b50 | 4576 | dp_netdev_execute_actions(struct dp_netdev_pmd_thread *pmd, |
1895cc8d | 4577 | struct dp_packet_batch *packets, |
66e4ad8a | 4578 | bool may_steal, const struct flow *flow, |
324c8374 IM |
4579 | const struct nlattr *actions, size_t actions_len, |
4580 | long long now) | |
72865317 | 4581 | { |
66e4ad8a | 4582 | struct dp_netdev_execute_aux aux = { pmd, now, flow }; |
9080a111 | 4583 | |
1895cc8d | 4584 | odp_execute_actions(&aux, packets, may_steal, actions, |
8cbf4f47 | 4585 | actions_len, dp_execute_cb); |
72865317 BP |
4586 | } |
4587 | ||
4d4e68ed DDP |
4588 | struct dp_netdev_ct_dump { |
4589 | struct ct_dpif_dump_state up; | |
4590 | struct conntrack_dump dump; | |
4591 | struct conntrack *ct; | |
4592 | struct dp_netdev *dp; | |
4593 | }; | |
4594 | ||
4595 | static int | |
4596 | dpif_netdev_ct_dump_start(struct dpif *dpif, struct ct_dpif_dump_state **dump_, | |
4597 | const uint16_t *pzone) | |
4598 | { | |
4599 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
4600 | struct dp_netdev_ct_dump *dump; | |
4601 | ||
4602 | dump = xzalloc(sizeof *dump); | |
4603 | dump->dp = dp; | |
4604 | dump->ct = &dp->conntrack; | |
4605 | ||
4606 | conntrack_dump_start(&dp->conntrack, &dump->dump, pzone); | |
4607 | ||
4608 | *dump_ = &dump->up; | |
4609 | ||
4610 | return 0; | |
4611 | } | |
4612 | ||
4613 | static int | |
4614 | dpif_netdev_ct_dump_next(struct dpif *dpif OVS_UNUSED, | |
4615 | struct ct_dpif_dump_state *dump_, | |
4616 | struct ct_dpif_entry *entry) | |
4617 | { | |
4618 | struct dp_netdev_ct_dump *dump; | |
4619 | ||
4620 | INIT_CONTAINER(dump, dump_, up); | |
4621 | ||
4622 | return conntrack_dump_next(&dump->dump, entry); | |
4623 | } | |
4624 | ||
4625 | static int | |
4626 | dpif_netdev_ct_dump_done(struct dpif *dpif OVS_UNUSED, | |
4627 | struct ct_dpif_dump_state *dump_) | |
4628 | { | |
4629 | struct dp_netdev_ct_dump *dump; | |
4630 | int err; | |
4631 | ||
4632 | INIT_CONTAINER(dump, dump_, up); | |
4633 | ||
4634 | err = conntrack_dump_done(&dump->dump); | |
4635 | ||
4636 | free(dump); | |
4637 | ||
4638 | return err; | |
4639 | } | |
4640 | ||
5d9cbb4c DDP |
4641 | static int |
4642 | dpif_netdev_ct_flush(struct dpif *dpif, const uint16_t *zone) | |
4643 | { | |
4644 | struct dp_netdev *dp = get_dp_netdev(dpif); | |
4645 | ||
4646 | return conntrack_flush(&dp->conntrack, zone); | |
4647 | } | |
4648 | ||
72865317 | 4649 | const struct dpif_class dpif_netdev_class = { |
72865317 | 4650 | "netdev", |
6553d06b | 4651 | dpif_netdev_init, |
2197d7ab | 4652 | dpif_netdev_enumerate, |
0aeaabc8 | 4653 | dpif_netdev_port_open_type, |
72865317 BP |
4654 | dpif_netdev_open, |
4655 | dpif_netdev_close, | |
7dab847a | 4656 | dpif_netdev_destroy, |
e4cfed38 PS |
4657 | dpif_netdev_run, |
4658 | dpif_netdev_wait, | |
72865317 | 4659 | dpif_netdev_get_stats, |
72865317 BP |
4660 | dpif_netdev_port_add, |
4661 | dpif_netdev_port_del, | |
3eb67853 | 4662 | dpif_netdev_port_set_config, |
72865317 BP |
4663 | dpif_netdev_port_query_by_number, |
4664 | dpif_netdev_port_query_by_name, | |
98403001 | 4665 | NULL, /* port_get_pid */ |
b0ec0f27 BP |
4666 | dpif_netdev_port_dump_start, |
4667 | dpif_netdev_port_dump_next, | |
4668 | dpif_netdev_port_dump_done, | |
72865317 BP |
4669 | dpif_netdev_port_poll, |
4670 | dpif_netdev_port_poll_wait, | |
72865317 | 4671 | dpif_netdev_flow_flush, |
ac64794a BP |
4672 | dpif_netdev_flow_dump_create, |
4673 | dpif_netdev_flow_dump_destroy, | |
4674 | dpif_netdev_flow_dump_thread_create, | |
4675 | dpif_netdev_flow_dump_thread_destroy, | |
704a1e09 | 4676 | dpif_netdev_flow_dump_next, |
1a0c894a | 4677 | dpif_netdev_operate, |
6b31e073 RW |
4678 | NULL, /* recv_set */ |
4679 | NULL, /* handlers_set */ | |
f2eee189 | 4680 | dpif_netdev_pmd_set, |
5bf93d67 | 4681 | dpif_netdev_queue_to_priority, |
6b31e073 RW |
4682 | NULL, /* recv */ |
4683 | NULL, /* recv_wait */ | |
4684 | NULL, /* recv_purge */ | |
e4e74c3a | 4685 | dpif_netdev_register_dp_purge_cb, |
6b31e073 RW |
4686 | dpif_netdev_register_upcall_cb, |
4687 | dpif_netdev_enable_upcall, | |
4688 | dpif_netdev_disable_upcall, | |
b5cbbcf6 | 4689 | dpif_netdev_get_datapath_version, |
4d4e68ed DDP |
4690 | dpif_netdev_ct_dump_start, |
4691 | dpif_netdev_ct_dump_next, | |
4692 | dpif_netdev_ct_dump_done, | |
5d9cbb4c | 4693 | dpif_netdev_ct_flush, |
72865317 | 4694 | }; |
614c4892 | 4695 | |
74cc3969 BP |
4696 | static void |
4697 | dpif_dummy_change_port_number(struct unixctl_conn *conn, int argc OVS_UNUSED, | |
4698 | const char *argv[], void *aux OVS_UNUSED) | |
4699 | { | |
e9985d6a | 4700 | struct dp_netdev_port *port; |
74cc3969 | 4701 | struct dp_netdev *dp; |
ff073a71 | 4702 | odp_port_t port_no; |
74cc3969 | 4703 | |
8a4e3a85 | 4704 | ovs_mutex_lock(&dp_netdev_mutex); |
74cc3969 BP |
4705 | dp = shash_find_data(&dp_netdevs, argv[1]); |
4706 | if (!dp || !dpif_netdev_class_is_dummy(dp->class)) { | |
8a4e3a85 | 4707 | ovs_mutex_unlock(&dp_netdev_mutex); |
74cc3969 BP |
4708 | unixctl_command_reply_error(conn, "unknown datapath or not a dummy"); |
4709 | return; | |
4710 | } | |
8a4e3a85 BP |
4711 | ovs_refcount_ref(&dp->ref_cnt); |
4712 | ovs_mutex_unlock(&dp_netdev_mutex); | |
74cc3969 | 4713 | |
59e6d833 | 4714 | ovs_mutex_lock(&dp->port_mutex); |
e9985d6a | 4715 | if (get_port_by_name(dp, argv[2], &port)) { |
74cc3969 | 4716 | unixctl_command_reply_error(conn, "unknown port"); |
8a4e3a85 | 4717 | goto exit; |
74cc3969 BP |
4718 | } |
4719 | ||
ff073a71 BP |
4720 | port_no = u32_to_odp(atoi(argv[3])); |
4721 | if (!port_no || port_no == ODPP_NONE) { | |
74cc3969 | 4722 | unixctl_command_reply_error(conn, "bad port number"); |
8a4e3a85 | 4723 | goto exit; |
74cc3969 | 4724 | } |
ff073a71 | 4725 | if (dp_netdev_lookup_port(dp, port_no)) { |
74cc3969 | 4726 | unixctl_command_reply_error(conn, "port number already in use"); |
8a4e3a85 | 4727 | goto exit; |
74cc3969 | 4728 | } |
59e6d833 | 4729 | |
e9985d6a DDP |
4730 | /* Remove port. */ |
4731 | hmap_remove(&dp->ports, &port->node); | |
4732 | dp_netdev_del_port_from_all_pmds(dp, port); | |
59e6d833 | 4733 | |
e9985d6a DDP |
4734 | /* Reinsert with new port number. */ |
4735 | port->port_no = port_no; | |
4736 | hmap_insert(&dp->ports, &port->node, hash_port_no(port_no)); | |
4737 | dp_netdev_add_port_to_pmds(dp, port); | |
59e6d833 | 4738 | |
d33ed218 | 4739 | seq_change(dp->port_seq); |
74cc3969 | 4740 | unixctl_command_reply(conn, NULL); |
8a4e3a85 BP |
4741 | |
4742 | exit: | |
59e6d833 | 4743 | ovs_mutex_unlock(&dp->port_mutex); |
8a4e3a85 | 4744 | dp_netdev_unref(dp); |
74cc3969 BP |
4745 | } |
4746 | ||
0cbfe35d BP |
4747 | static void |
4748 | dpif_dummy_register__(const char *type) | |
4749 | { | |
4750 | struct dpif_class *class; | |
4751 | ||
4752 | class = xmalloc(sizeof *class); | |
4753 | *class = dpif_netdev_class; | |
4754 | class->type = xstrdup(type); | |
4755 | dp_register_provider(class); | |
4756 | } | |
4757 | ||
8420c7ad BP |
4758 | static void |
4759 | dpif_dummy_override(const char *type) | |
4760 | { | |
65d43fdc YT |
4761 | int error; |
4762 | ||
4763 | /* | |
4764 | * Ignore EAFNOSUPPORT to allow --enable-dummy=system with | |
4765 | * a userland-only build. It's useful for testsuite. | |
4766 | */ | |
4767 | error = dp_unregister_provider(type); | |
4768 | if (error == 0 || error == EAFNOSUPPORT) { | |
8420c7ad BP |
4769 | dpif_dummy_register__(type); |
4770 | } | |
4771 | } | |
4772 | ||
614c4892 | 4773 | void |
8420c7ad | 4774 | dpif_dummy_register(enum dummy_level level) |
614c4892 | 4775 | { |
8420c7ad | 4776 | if (level == DUMMY_OVERRIDE_ALL) { |
0cbfe35d BP |
4777 | struct sset types; |
4778 | const char *type; | |
4779 | ||
4780 | sset_init(&types); | |
4781 | dp_enumerate_types(&types); | |
4782 | SSET_FOR_EACH (type, &types) { | |
8420c7ad | 4783 | dpif_dummy_override(type); |
0cbfe35d BP |
4784 | } |
4785 | sset_destroy(&types); | |
8420c7ad BP |
4786 | } else if (level == DUMMY_OVERRIDE_SYSTEM) { |
4787 | dpif_dummy_override("system"); | |
614c4892 | 4788 | } |
0cbfe35d BP |
4789 | |
4790 | dpif_dummy_register__("dummy"); | |
74cc3969 BP |
4791 | |
4792 | unixctl_command_register("dpif-dummy/change-port-number", | |
74467d5c | 4793 | "dp port new-number", |
74cc3969 | 4794 | 3, 3, dpif_dummy_change_port_number, NULL); |
614c4892 | 4795 | } |
0de8783a JR |
4796 | \f |
4797 | /* Datapath Classifier. */ | |
4798 | ||
4799 | /* A set of rules that all have the same fields wildcarded. */ | |
4800 | struct dpcls_subtable { | |
4801 | /* The fields are only used by writers. */ | |
4802 | struct cmap_node cmap_node OVS_GUARDED; /* Within dpcls 'subtables_map'. */ | |
4803 | ||
4804 | /* These fields are accessed by readers. */ | |
4805 | struct cmap rules; /* Contains "struct dpcls_rule"s. */ | |
3453b4d6 JS |
4806 | uint32_t hit_cnt; /* Number of match hits in subtable in current |
4807 | optimization interval. */ | |
0de8783a JR |
4808 | struct netdev_flow_key mask; /* Wildcards for fields (const). */ |
4809 | /* 'mask' must be the last field, additional space is allocated here. */ | |
4810 | }; | |
4811 | ||
4812 | /* Initializes 'cls' as a classifier that initially contains no classification | |
4813 | * rules. */ | |
4814 | static void | |
4815 | dpcls_init(struct dpcls *cls) | |
4816 | { | |
4817 | cmap_init(&cls->subtables_map); | |
da9cfca6 | 4818 | pvector_init(&cls->subtables); |
0de8783a JR |
4819 | } |
4820 | ||
4821 | static void | |
4822 | dpcls_destroy_subtable(struct dpcls *cls, struct dpcls_subtable *subtable) | |
4823 | { | |
3453b4d6 | 4824 | VLOG_DBG("Destroying subtable %p for in_port %d", subtable, cls->in_port); |
da9cfca6 | 4825 | pvector_remove(&cls->subtables, subtable); |
0de8783a JR |
4826 | cmap_remove(&cls->subtables_map, &subtable->cmap_node, |
4827 | subtable->mask.hash); | |
4828 | cmap_destroy(&subtable->rules); | |
4829 | ovsrcu_postpone(free, subtable); | |
4830 | } | |
4831 | ||
4832 | /* Destroys 'cls'. Rules within 'cls', if any, are not freed; this is the | |
4833 | * caller's responsibility. | |
4834 | * May only be called after all the readers have been terminated. */ | |
4835 | static void | |
4836 | dpcls_destroy(struct dpcls *cls) | |
4837 | { | |
4838 | if (cls) { | |
4839 | struct dpcls_subtable *subtable; | |
4840 | ||
4841 | CMAP_FOR_EACH (subtable, cmap_node, &cls->subtables_map) { | |
361d808d | 4842 | ovs_assert(cmap_count(&subtable->rules) == 0); |
0de8783a JR |
4843 | dpcls_destroy_subtable(cls, subtable); |
4844 | } | |
4845 | cmap_destroy(&cls->subtables_map); | |
da9cfca6 | 4846 | pvector_destroy(&cls->subtables); |
0de8783a JR |
4847 | } |
4848 | } | |
4849 | ||
4850 | static struct dpcls_subtable * | |
4851 | dpcls_create_subtable(struct dpcls *cls, const struct netdev_flow_key *mask) | |
4852 | { | |
4853 | struct dpcls_subtable *subtable; | |
4854 | ||
4855 | /* Need to add one. */ | |
caeb4906 JR |
4856 | subtable = xmalloc(sizeof *subtable |
4857 | - sizeof subtable->mask.mf + mask->len); | |
0de8783a | 4858 | cmap_init(&subtable->rules); |
3453b4d6 | 4859 | subtable->hit_cnt = 0; |
0de8783a JR |
4860 | netdev_flow_key_clone(&subtable->mask, mask); |
4861 | cmap_insert(&cls->subtables_map, &subtable->cmap_node, mask->hash); | |
3453b4d6 | 4862 | /* Add the new subtable at the end of the pvector (with no hits yet) */ |
da9cfca6 | 4863 | pvector_insert(&cls->subtables, subtable, 0); |
84dbfb2b | 4864 | VLOG_DBG("Creating %"PRIuSIZE". subtable %p for in_port %d", |
3453b4d6 | 4865 | cmap_count(&cls->subtables_map), subtable, cls->in_port); |
da9cfca6 | 4866 | pvector_publish(&cls->subtables); |
0de8783a JR |
4867 | |
4868 | return subtable; | |
4869 | } | |
4870 | ||
4871 | static inline struct dpcls_subtable * | |
4872 | dpcls_find_subtable(struct dpcls *cls, const struct netdev_flow_key *mask) | |
4873 | { | |
4874 | struct dpcls_subtable *subtable; | |
4875 | ||
4876 | CMAP_FOR_EACH_WITH_HASH (subtable, cmap_node, mask->hash, | |
4877 | &cls->subtables_map) { | |
4878 | if (netdev_flow_key_equal(&subtable->mask, mask)) { | |
4879 | return subtable; | |
4880 | } | |
4881 | } | |
4882 | return dpcls_create_subtable(cls, mask); | |
4883 | } | |
4884 | ||
3453b4d6 JS |
4885 | |
4886 | /* Periodically sort the dpcls subtable vectors according to hit counts */ | |
4887 | static void | |
4888 | dpcls_sort_subtable_vector(struct dpcls *cls) | |
4889 | { | |
4890 | struct pvector *pvec = &cls->subtables; | |
4891 | struct dpcls_subtable *subtable; | |
4892 | ||
4893 | PVECTOR_FOR_EACH (subtable, pvec) { | |
4894 | pvector_change_priority(pvec, subtable, subtable->hit_cnt); | |
4895 | subtable->hit_cnt = 0; | |
4896 | } | |
4897 | pvector_publish(pvec); | |
4898 | } | |
4899 | ||
4900 | static inline void | |
4901 | dp_netdev_pmd_try_optimize(struct dp_netdev_pmd_thread *pmd) | |
4902 | { | |
4903 | struct dpcls *cls; | |
4904 | long long int now = time_msec(); | |
4905 | ||
4906 | if (now > pmd->next_optimization) { | |
4907 | /* Try to obtain the flow lock to block out revalidator threads. | |
4908 | * If not possible, just try next time. */ | |
4909 | if (!ovs_mutex_trylock(&pmd->flow_mutex)) { | |
4910 | /* Optimize each classifier */ | |
4911 | CMAP_FOR_EACH (cls, node, &pmd->classifiers) { | |
4912 | dpcls_sort_subtable_vector(cls); | |
4913 | } | |
4914 | ovs_mutex_unlock(&pmd->flow_mutex); | |
4915 | /* Start new measuring interval */ | |
4916 | pmd->next_optimization = now + DPCLS_OPTIMIZATION_INTERVAL; | |
4917 | } | |
4918 | } | |
4919 | } | |
4920 | ||
0de8783a JR |
4921 | /* Insert 'rule' into 'cls'. */ |
4922 | static void | |
4923 | dpcls_insert(struct dpcls *cls, struct dpcls_rule *rule, | |
4924 | const struct netdev_flow_key *mask) | |
4925 | { | |
4926 | struct dpcls_subtable *subtable = dpcls_find_subtable(cls, mask); | |
4927 | ||
3453b4d6 | 4928 | /* Refer to subtable's mask, also for later removal. */ |
0de8783a JR |
4929 | rule->mask = &subtable->mask; |
4930 | cmap_insert(&subtable->rules, &rule->cmap_node, rule->flow.hash); | |
4931 | } | |
4932 | ||
4933 | /* Removes 'rule' from 'cls', also destructing the 'rule'. */ | |
4934 | static void | |
4935 | dpcls_remove(struct dpcls *cls, struct dpcls_rule *rule) | |
4936 | { | |
4937 | struct dpcls_subtable *subtable; | |
4938 | ||
4939 | ovs_assert(rule->mask); | |
4940 | ||
3453b4d6 | 4941 | /* Get subtable from reference in rule->mask. */ |
0de8783a | 4942 | INIT_CONTAINER(subtable, rule->mask, mask); |
0de8783a JR |
4943 | if (cmap_remove(&subtable->rules, &rule->cmap_node, rule->flow.hash) |
4944 | == 0) { | |
3453b4d6 | 4945 | /* Delete empty subtable. */ |
0de8783a | 4946 | dpcls_destroy_subtable(cls, subtable); |
da9cfca6 | 4947 | pvector_publish(&cls->subtables); |
0de8783a JR |
4948 | } |
4949 | } | |
4950 | ||
361d808d JR |
4951 | /* Returns true if 'target' satisfies 'key' in 'mask', that is, if each 1-bit |
4952 | * in 'mask' the values in 'key' and 'target' are the same. */ | |
0de8783a JR |
4953 | static inline bool |
4954 | dpcls_rule_matches_key(const struct dpcls_rule *rule, | |
4955 | const struct netdev_flow_key *target) | |
4956 | { | |
09b0fa9c JR |
4957 | const uint64_t *keyp = miniflow_get_values(&rule->flow.mf); |
4958 | const uint64_t *maskp = miniflow_get_values(&rule->mask->mf); | |
5fcff47b | 4959 | uint64_t value; |
0de8783a | 4960 | |
5fcff47b JR |
4961 | NETDEV_FLOW_KEY_FOR_EACH_IN_FLOWMAP(value, target, rule->flow.mf.map) { |
4962 | if (OVS_UNLIKELY((value & *maskp++) != *keyp++)) { | |
0de8783a JR |
4963 | return false; |
4964 | } | |
4965 | } | |
4966 | return true; | |
4967 | } | |
4968 | ||
5b1c9c78 FA |
4969 | /* For each miniflow in 'keys' performs a classifier lookup writing the result |
4970 | * into the corresponding slot in 'rules'. If a particular entry in 'keys' is | |
0de8783a JR |
4971 | * NULL it is skipped. |
4972 | * | |
4973 | * This function is optimized for use in the userspace datapath and therefore | |
4974 | * does not implement a lot of features available in the standard | |
4975 | * classifier_lookup() function. Specifically, it does not implement | |
4976 | * priorities, instead returning any rule which matches the flow. | |
4977 | * | |
5b1c9c78 | 4978 | * Returns true if all miniflows found a corresponding rule. */ |
0de8783a | 4979 | static bool |
3453b4d6 JS |
4980 | dpcls_lookup(struct dpcls *cls, const struct netdev_flow_key keys[], |
4981 | struct dpcls_rule **rules, const size_t cnt, | |
4982 | int *num_lookups_p) | |
0de8783a | 4983 | { |
5b1c9c78 FA |
4984 | /* The received 'cnt' miniflows are the search-keys that will be processed |
4985 | * in batches of 16 elements. N_MAPS will contain the number of these | |
4986 | * 16-elements batches. i.e. for 'cnt' = 32, N_MAPS will be 2. The batch | |
4987 | * size 16 was experimentally found faster than 8 or 32. */ | |
0de8783a JR |
4988 | typedef uint16_t map_type; |
4989 | #define MAP_BITS (sizeof(map_type) * CHAR_BIT) | |
4990 | ||
4991 | #if !defined(__CHECKER__) && !defined(_WIN32) | |
4992 | const int N_MAPS = DIV_ROUND_UP(cnt, MAP_BITS); | |
4993 | #else | |
cd159f1a | 4994 | enum { N_MAPS = DIV_ROUND_UP(NETDEV_MAX_BURST, MAP_BITS) }; |
0de8783a JR |
4995 | #endif |
4996 | map_type maps[N_MAPS]; | |
4997 | struct dpcls_subtable *subtable; | |
4998 | ||
4999 | memset(maps, 0xff, sizeof maps); | |
5000 | if (cnt % MAP_BITS) { | |
5001 | maps[N_MAPS - 1] >>= MAP_BITS - cnt % MAP_BITS; /* Clear extra bits. */ | |
5002 | } | |
5003 | memset(rules, 0, cnt * sizeof *rules); | |
5004 | ||
3453b4d6 JS |
5005 | int lookups_match = 0, subtable_pos = 1; |
5006 | ||
5b1c9c78 FA |
5007 | /* The Datapath classifier - aka dpcls - is composed of subtables. |
5008 | * Subtables are dynamically created as needed when new rules are inserted. | |
5009 | * Each subtable collects rules with matches on a specific subset of packet | |
5010 | * fields as defined by the subtable's mask. We proceed to process every | |
5011 | * search-key against each subtable, but when a match is found for a | |
5012 | * search-key, the search for that key can stop because the rules are | |
5013 | * non-overlapping. */ | |
da9cfca6 | 5014 | PVECTOR_FOR_EACH (subtable, &cls->subtables) { |
0de8783a JR |
5015 | const struct netdev_flow_key *mkeys = keys; |
5016 | struct dpcls_rule **mrules = rules; | |
5017 | map_type remains = 0; | |
5018 | int m; | |
5019 | ||
5020 | BUILD_ASSERT_DECL(sizeof remains == sizeof *maps); | |
5021 | ||
5b1c9c78 | 5022 | /* Loops on each batch of 16 search-keys. */ |
0de8783a JR |
5023 | for (m = 0; m < N_MAPS; m++, mkeys += MAP_BITS, mrules += MAP_BITS) { |
5024 | uint32_t hashes[MAP_BITS]; | |
5025 | const struct cmap_node *nodes[MAP_BITS]; | |
5026 | unsigned long map = maps[m]; | |
5027 | int i; | |
5028 | ||
5029 | if (!map) { | |
5030 | continue; /* Skip empty maps. */ | |
5031 | } | |
5032 | ||
5b1c9c78 FA |
5033 | /* Compute hashes for the remaining keys. Each search-key is |
5034 | * masked with the subtable's mask to avoid hashing the wildcarded | |
5035 | * bits. */ | |
3ee6026a | 5036 | ULLONG_FOR_EACH_1(i, map) { |
0de8783a JR |
5037 | hashes[i] = netdev_flow_key_hash_in_mask(&mkeys[i], |
5038 | &subtable->mask); | |
5039 | } | |
5040 | /* Lookup. */ | |
5041 | map = cmap_find_batch(&subtable->rules, map, hashes, nodes); | |
5b1c9c78 FA |
5042 | /* Check results. When the i-th bit of map is set, it means that a |
5043 | * set of nodes with a matching hash value was found for the i-th | |
5044 | * search-key. Due to possible hash collisions we need to check | |
5045 | * which of the found rules, if any, really matches our masked | |
5046 | * search-key. */ | |
3ee6026a | 5047 | ULLONG_FOR_EACH_1(i, map) { |
0de8783a JR |
5048 | struct dpcls_rule *rule; |
5049 | ||
5050 | CMAP_NODE_FOR_EACH (rule, cmap_node, nodes[i]) { | |
5051 | if (OVS_LIKELY(dpcls_rule_matches_key(rule, &mkeys[i]))) { | |
5052 | mrules[i] = rule; | |
3453b4d6 JS |
5053 | /* Even at 20 Mpps the 32-bit hit_cnt cannot wrap |
5054 | * within one second optimization interval */ | |
5055 | subtable->hit_cnt++; | |
5056 | lookups_match += subtable_pos; | |
0de8783a JR |
5057 | goto next; |
5058 | } | |
5059 | } | |
5b1c9c78 FA |
5060 | /* None of the found rules was a match. Reset the i-th bit to |
5061 | * keep searching in the next subtable. */ | |
3ee6026a | 5062 | ULLONG_SET0(map, i); /* Did not match. */ |
0de8783a JR |
5063 | next: |
5064 | ; /* Keep Sparse happy. */ | |
5065 | } | |
5066 | maps[m] &= ~map; /* Clear the found rules. */ | |
5067 | remains |= maps[m]; | |
5068 | } | |
5069 | if (!remains) { | |
3453b4d6 JS |
5070 | if (num_lookups_p) { |
5071 | *num_lookups_p = lookups_match; | |
5072 | } | |
0de8783a JR |
5073 | return true; /* All found. */ |
5074 | } | |
3453b4d6 JS |
5075 | subtable_pos++; |
5076 | } | |
5077 | if (num_lookups_p) { | |
5078 | *num_lookups_p = lookups_match; | |
0de8783a JR |
5079 | } |
5080 | return false; /* Some misses. */ | |
5081 | } |