2 * Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014 Nicira, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
18 #include "dpif-netdev.h"
24 #include <netinet/in.h>
25 #include <sys/socket.h>
30 #include <sys/ioctl.h>
34 #include "classifier.h"
38 #include "dpif-provider.h"
40 #include "dynamic-string.h"
41 #include "fat-rwlock.h"
46 #include "meta-flow.h"
48 #include "netdev-dpdk.h"
49 #include "netdev-vport.h"
51 #include "odp-execute.h"
53 #include "ofp-print.h"
56 #include "packet-dpif.h"
58 #include "poll-loop.h"
68 VLOG_DEFINE_THIS_MODULE(dpif_netdev);
70 /* By default, choose a priority in the middle. */
71 #define NETDEV_RULE_PRIORITY 0x8000
73 #define FLOW_DUMP_MAX_BATCH 50
74 /* Use per thread recirc_depth to prevent recirculation loop. */
75 #define MAX_RECIRC_DEPTH 5
76 DEFINE_STATIC_PER_THREAD_DATA(uint32_t, recirc_depth, 0)
78 /* Configuration parameters. */
79 enum { MAX_FLOWS = 65536 }; /* Maximum number of flows in flow table. */
81 /* Protects against changes to 'dp_netdevs'. */
82 static struct ovs_mutex dp_netdev_mutex = OVS_MUTEX_INITIALIZER;
84 /* Contains all 'struct dp_netdev's. */
85 static struct shash dp_netdevs OVS_GUARDED_BY(dp_netdev_mutex)
86 = SHASH_INITIALIZER(&dp_netdevs);
88 static struct vlog_rate_limit upcall_rl = VLOG_RATE_LIMIT_INIT(600, 600);
90 /* Stores a miniflow */
92 /* There are fields in the flow structure that we never use. Therefore we can
93 * save a few words of memory */
94 #define NETDEV_KEY_BUF_SIZE_U32 (FLOW_U32S \
96 - FLOW_U32_SIZE(regs) \
97 - FLOW_U32_SIZE(metadata) \
99 struct netdev_flow_key {
100 struct miniflow flow;
101 uint32_t buf[NETDEV_KEY_BUF_SIZE_U32];
104 /* Exact match cache for frequently used flows
106 * The cache uses a 32-bit hash of the packet (which can be the RSS hash) to
107 * search its entries for a miniflow that matches exactly the miniflow of the
108 * packet. It stores the 'cls_rule'(rule) that matches the miniflow.
110 * A cache entry holds a reference to its 'dp_netdev_flow'.
112 * A miniflow with a given hash can be in one of EM_FLOW_HASH_SEGS different
113 * entries. The 32-bit hash is split into EM_FLOW_HASH_SEGS values (each of
114 * them is EM_FLOW_HASH_SHIFT bits wide and the remainder is thrown away). Each
115 * value is the index of a cache entry where the miniflow could be.
121 * Each pmd_thread has its own private exact match cache.
122 * If dp_netdev_input is not called from a pmd thread, a mutex is used.
125 #define EM_FLOW_HASH_SHIFT 10
126 #define EM_FLOW_HASH_ENTRIES (1u << EM_FLOW_HASH_SHIFT)
127 #define EM_FLOW_HASH_MASK (EM_FLOW_HASH_ENTRIES - 1)
128 #define EM_FLOW_HASH_SEGS 2
132 struct netdev_flow_key mf;
133 struct dp_netdev_flow *flow;
137 struct emc_entry entries[EM_FLOW_HASH_ENTRIES];
140 /* Iterate in the exact match cache through every entry that might contain a
141 * miniflow with hash 'HASH'. */
142 #define EMC_FOR_EACH_POS_WITH_HASH(EMC, CURRENT_ENTRY, HASH) \
143 for (uint32_t i__ = 0, srch_hash__ = (HASH); \
144 (CURRENT_ENTRY) = &(EMC)->entries[srch_hash__ & EM_FLOW_HASH_MASK], \
145 i__ < EM_FLOW_HASH_SEGS; \
146 i__++, srch_hash__ >>= EM_FLOW_HASH_SHIFT)
148 /* Datapath based on the network device interface from netdev.h.
154 * Some members, marked 'const', are immutable. Accessing other members
155 * requires synchronization, as noted in more detail below.
157 * Acquisition order is, from outermost to innermost:
159 * dp_netdev_mutex (global)
165 const struct dpif_class *const class;
166 const char *const name;
168 struct ovs_refcount ref_cnt;
169 atomic_flag destroyed;
173 * Writers of 'flow_table' must take the 'flow_mutex'. Corresponding
174 * changes to 'cls' must be made while still holding the 'flow_mutex'.
176 struct ovs_mutex flow_mutex;
177 struct classifier cls;
178 struct cmap flow_table OVS_GUARDED; /* Flow table. */
182 * ovsthread_stats is internally synchronized. */
183 struct ovsthread_stats stats; /* Contains 'struct dp_netdev_stats *'. */
187 * Protected by RCU. Take the mutex to add or remove ports. */
188 struct ovs_mutex port_mutex;
190 struct seq *port_seq; /* Incremented whenever a port changes. */
192 /* Protects access to ofproto-dpif-upcall interface during revalidator
193 * thread synchronization. */
194 struct fat_rwlock upcall_rwlock;
195 upcall_callback *upcall_cb; /* Callback function for executing upcalls. */
198 /* Forwarding threads. */
199 struct latch exit_latch;
200 struct pmd_thread *pmd_threads;
201 size_t n_pmd_threads;
204 /* Exact match cache for non-pmd devices.
205 * Pmd devices use instead each thread's flow_cache for this purpose.
206 * Protected by emc_mutex */
207 struct emc_cache flow_cache OVS_GUARDED;
208 struct ovs_mutex emc_mutex;
211 static struct dp_netdev_port *dp_netdev_lookup_port(const struct dp_netdev *dp,
215 DP_STAT_HIT, /* Packets that matched in the flow table. */
216 DP_STAT_MISS, /* Packets that did not match. */
217 DP_STAT_LOST, /* Packets not passed up to the client. */
221 /* Contained by struct dp_netdev's 'stats' member. */
222 struct dp_netdev_stats {
223 struct ovs_mutex mutex; /* Protects 'n'. */
225 /* Indexed by DP_STAT_*, protected by 'mutex'. */
226 unsigned long long int n[DP_N_STATS] OVS_GUARDED;
230 /* A port in a netdev-based datapath. */
231 struct dp_netdev_port {
232 struct cmap_node node; /* Node in dp_netdev's 'ports'. */
234 struct netdev *netdev;
235 struct netdev_saved_flags *sf;
236 struct netdev_rxq **rxq;
237 struct ovs_refcount ref_cnt;
238 char *type; /* Port type as requested by user. */
241 /* A flow in dp_netdev's 'flow_table'.
247 * Except near the beginning or ending of its lifespan, rule 'rule' belongs to
248 * its dp_netdev's classifier. The text below calls this classifier 'cls'.
253 * The thread safety rules described here for "struct dp_netdev_flow" are
254 * motivated by two goals:
256 * - Prevent threads that read members of "struct dp_netdev_flow" from
257 * reading bad data due to changes by some thread concurrently modifying
260 * - Prevent two threads making changes to members of a given "struct
261 * dp_netdev_flow" from interfering with each other.
267 * A flow 'flow' may be accessed without a risk of being freed during an RCU
268 * grace period. Code that needs to hold onto a flow for a while
269 * should try incrementing 'flow->ref_cnt' with dp_netdev_flow_ref().
271 * 'flow->ref_cnt' protects 'flow' from being freed. It doesn't protect the
272 * flow from being deleted from 'cls' and it doesn't protect members of 'flow'
275 * Some members, marked 'const', are immutable. Accessing other members
276 * requires synchronization, as noted in more detail below.
278 struct dp_netdev_flow {
280 /* Packet classification. */
281 const struct cls_rule cr; /* In owning dp_netdev's 'cls'. */
283 /* Hash table index by unmasked flow. */
284 const struct cmap_node node; /* In owning dp_netdev's 'flow_table'. */
285 const struct flow flow; /* The flow that created this entry. */
287 /* Number of references.
288 * The classifier owns one reference.
289 * Any thread trying to keep a rule from being freed should hold its own
291 struct ovs_refcount ref_cnt;
295 * Reading or writing these members requires 'mutex'. */
296 struct ovsthread_stats stats; /* Contains "struct dp_netdev_flow_stats". */
299 OVSRCU_TYPE(struct dp_netdev_actions *) actions;
302 static void dp_netdev_flow_unref(struct dp_netdev_flow *);
303 static bool dp_netdev_flow_ref(struct dp_netdev_flow *);
305 /* Contained by struct dp_netdev_flow's 'stats' member. */
306 struct dp_netdev_flow_stats {
307 struct ovs_mutex mutex; /* Guards all the other members. */
309 long long int used OVS_GUARDED; /* Last used time, in monotonic msecs. */
310 long long int packet_count OVS_GUARDED; /* Number of packets matched. */
311 long long int byte_count OVS_GUARDED; /* Number of bytes matched. */
312 uint16_t tcp_flags OVS_GUARDED; /* Bitwise-OR of seen tcp_flags values. */
315 /* A set of datapath actions within a "struct dp_netdev_flow".
321 * A struct dp_netdev_actions 'actions' is protected with RCU. */
322 struct dp_netdev_actions {
323 /* These members are immutable: they do not change during the struct's
325 struct nlattr *actions; /* Sequence of OVS_ACTION_ATTR_* attributes. */
326 unsigned int size; /* Size of 'actions', in bytes. */
329 struct dp_netdev_actions *dp_netdev_actions_create(const struct nlattr *,
331 struct dp_netdev_actions *dp_netdev_flow_get_actions(
332 const struct dp_netdev_flow *);
333 static void dp_netdev_actions_free(struct dp_netdev_actions *);
335 /* PMD: Poll modes drivers. PMD accesses devices via polling to eliminate
336 * the performance overhead of interrupt processing. Therefore netdev can
337 * not implement rx-wait for these devices. dpif-netdev needs to poll
338 * these device to check for recv buffer. pmd-thread does polling for
339 * devices assigned to itself thread.
341 * DPDK used PMD for accessing NIC.
343 * A thread that receives packets from PMD ports, looks them up in the flow
344 * table, and executes the actions it finds.
347 struct dp_netdev *dp;
348 struct emc_cache flow_cache;
351 atomic_uint change_seq;
354 #define PMD_INITIAL_SEQ 1
356 /* Interface to netdev-based datapath. */
359 struct dp_netdev *dp;
360 uint64_t last_port_seq;
363 static int get_port_by_number(struct dp_netdev *dp, odp_port_t port_no,
364 struct dp_netdev_port **portp);
365 static int get_port_by_name(struct dp_netdev *dp, const char *devname,
366 struct dp_netdev_port **portp);
367 static void dp_netdev_free(struct dp_netdev *)
368 OVS_REQUIRES(dp_netdev_mutex);
369 static void dp_netdev_flow_flush(struct dp_netdev *);
370 static int do_add_port(struct dp_netdev *dp, const char *devname,
371 const char *type, odp_port_t port_no)
372 OVS_REQUIRES(dp->port_mutex);
373 static void do_del_port(struct dp_netdev *dp, struct dp_netdev_port *)
374 OVS_REQUIRES(dp->port_mutex);
375 static int dpif_netdev_open(const struct dpif_class *, const char *name,
376 bool create, struct dpif **);
377 static void dp_netdev_execute_actions(struct dp_netdev *dp,
378 struct dpif_packet **, int c,
379 bool may_steal, struct pkt_metadata *,
380 struct emc_cache *flow_cache,
381 const struct nlattr *actions,
383 static void dp_netdev_port_input(struct dp_netdev *dp,
384 struct emc_cache *flow_cache,
385 struct dpif_packet **packets, int cnt,
388 static void dp_netdev_set_pmd_threads(struct dp_netdev *, int n);
389 static void dp_netdev_disable_upcall(struct dp_netdev *);
391 static void emc_clear_entry(struct emc_entry *ce);
394 emc_cache_init(struct emc_cache *flow_cache)
398 for (i = 0; i < ARRAY_SIZE(flow_cache->entries); i++) {
399 flow_cache->entries[i].flow = NULL;
400 flow_cache->entries[i].hash = 0;
401 miniflow_initialize(&flow_cache->entries[i].mf.flow,
402 flow_cache->entries[i].mf.buf);
407 emc_cache_uninit(struct emc_cache *flow_cache)
411 for (i = 0; i < ARRAY_SIZE(flow_cache->entries); i++) {
412 emc_clear_entry(&flow_cache->entries[i]);
416 static struct dpif_netdev *
417 dpif_netdev_cast(const struct dpif *dpif)
419 ovs_assert(dpif->dpif_class->open == dpif_netdev_open);
420 return CONTAINER_OF(dpif, struct dpif_netdev, dpif);
423 static struct dp_netdev *
424 get_dp_netdev(const struct dpif *dpif)
426 return dpif_netdev_cast(dpif)->dp;
430 dpif_netdev_enumerate(struct sset *all_dps,
431 const struct dpif_class *dpif_class)
433 struct shash_node *node;
435 ovs_mutex_lock(&dp_netdev_mutex);
436 SHASH_FOR_EACH(node, &dp_netdevs) {
437 struct dp_netdev *dp = node->data;
438 if (dpif_class != dp->class) {
439 /* 'dp_netdevs' contains both "netdev" and "dummy" dpifs.
440 * If the class doesn't match, skip this dpif. */
443 sset_add(all_dps, node->name);
445 ovs_mutex_unlock(&dp_netdev_mutex);
451 dpif_netdev_class_is_dummy(const struct dpif_class *class)
453 return class != &dpif_netdev_class;
457 dpif_netdev_port_open_type(const struct dpif_class *class, const char *type)
459 return strcmp(type, "internal") ? type
460 : dpif_netdev_class_is_dummy(class) ? "dummy"
465 create_dpif_netdev(struct dp_netdev *dp)
467 uint16_t netflow_id = hash_string(dp->name, 0);
468 struct dpif_netdev *dpif;
470 ovs_refcount_ref(&dp->ref_cnt);
472 dpif = xmalloc(sizeof *dpif);
473 dpif_init(&dpif->dpif, dp->class, dp->name, netflow_id >> 8, netflow_id);
475 dpif->last_port_seq = seq_read(dp->port_seq);
480 /* Choose an unused, non-zero port number and return it on success.
481 * Return ODPP_NONE on failure. */
483 choose_port(struct dp_netdev *dp, const char *name)
484 OVS_REQUIRES(dp->port_mutex)
488 if (dp->class != &dpif_netdev_class) {
492 /* If the port name begins with "br", start the number search at
493 * 100 to make writing tests easier. */
494 if (!strncmp(name, "br", 2)) {
498 /* If the port name contains a number, try to assign that port number.
499 * This can make writing unit tests easier because port numbers are
501 for (p = name; *p != '\0'; p++) {
502 if (isdigit((unsigned char) *p)) {
503 port_no = start_no + strtol(p, NULL, 10);
504 if (port_no > 0 && port_no != odp_to_u32(ODPP_NONE)
505 && !dp_netdev_lookup_port(dp, u32_to_odp(port_no))) {
506 return u32_to_odp(port_no);
513 for (port_no = 1; port_no <= UINT16_MAX; port_no++) {
514 if (!dp_netdev_lookup_port(dp, u32_to_odp(port_no))) {
515 return u32_to_odp(port_no);
523 create_dp_netdev(const char *name, const struct dpif_class *class,
524 struct dp_netdev **dpp)
525 OVS_REQUIRES(dp_netdev_mutex)
527 struct dp_netdev *dp;
530 dp = xzalloc(sizeof *dp);
531 shash_add(&dp_netdevs, name, dp);
533 *CONST_CAST(const struct dpif_class **, &dp->class) = class;
534 *CONST_CAST(const char **, &dp->name) = xstrdup(name);
535 ovs_refcount_init(&dp->ref_cnt);
536 atomic_flag_clear(&dp->destroyed);
538 ovs_mutex_init(&dp->flow_mutex);
539 classifier_init(&dp->cls, NULL);
540 cmap_init(&dp->flow_table);
542 ovsthread_stats_init(&dp->stats);
544 ovs_mutex_init(&dp->port_mutex);
545 cmap_init(&dp->ports);
546 dp->port_seq = seq_create();
547 latch_init(&dp->exit_latch);
548 fat_rwlock_init(&dp->upcall_rwlock);
550 /* Disable upcalls by default. */
551 dp_netdev_disable_upcall(dp);
552 dp->upcall_aux = NULL;
553 dp->upcall_cb = NULL;
555 ovs_mutex_lock(&dp->port_mutex);
556 error = do_add_port(dp, name, "internal", ODPP_LOCAL);
557 ovs_mutex_unlock(&dp->port_mutex);
563 ovs_mutex_init(&dp->emc_mutex);
564 emc_cache_init(&dp->flow_cache);
571 dpif_netdev_open(const struct dpif_class *class, const char *name,
572 bool create, struct dpif **dpifp)
574 struct dp_netdev *dp;
577 ovs_mutex_lock(&dp_netdev_mutex);
578 dp = shash_find_data(&dp_netdevs, name);
580 error = create ? create_dp_netdev(name, class, &dp) : ENODEV;
582 error = (dp->class != class ? EINVAL
587 *dpifp = create_dpif_netdev(dp);
590 ovs_mutex_unlock(&dp_netdev_mutex);
595 /* Requires dp_netdev_mutex so that we can't get a new reference to 'dp'
596 * through the 'dp_netdevs' shash while freeing 'dp'. */
598 dp_netdev_free(struct dp_netdev *dp)
599 OVS_REQUIRES(dp_netdev_mutex)
601 struct dp_netdev_port *port;
602 struct dp_netdev_stats *bucket;
605 shash_find_and_delete(&dp_netdevs, dp->name);
607 dp_netdev_set_pmd_threads(dp, 0);
608 free(dp->pmd_threads);
610 dp_netdev_flow_flush(dp);
611 ovs_mutex_lock(&dp->port_mutex);
612 CMAP_FOR_EACH (port, node, &dp->ports) {
613 do_del_port(dp, port);
615 ovs_mutex_unlock(&dp->port_mutex);
617 OVSTHREAD_STATS_FOR_EACH_BUCKET (bucket, i, &dp->stats) {
618 ovs_mutex_destroy(&bucket->mutex);
619 free_cacheline(bucket);
621 ovsthread_stats_destroy(&dp->stats);
623 classifier_destroy(&dp->cls);
624 cmap_destroy(&dp->flow_table);
625 ovs_mutex_destroy(&dp->flow_mutex);
626 seq_destroy(dp->port_seq);
627 cmap_destroy(&dp->ports);
628 fat_rwlock_destroy(&dp->upcall_rwlock);
629 latch_destroy(&dp->exit_latch);
631 emc_cache_uninit(&dp->flow_cache);
632 ovs_mutex_destroy(&dp->emc_mutex);
634 free(CONST_CAST(char *, dp->name));
639 dp_netdev_unref(struct dp_netdev *dp)
642 /* Take dp_netdev_mutex so that, if dp->ref_cnt falls to zero, we can't
643 * get a new reference to 'dp' through the 'dp_netdevs' shash. */
644 ovs_mutex_lock(&dp_netdev_mutex);
645 if (ovs_refcount_unref_relaxed(&dp->ref_cnt) == 1) {
648 ovs_mutex_unlock(&dp_netdev_mutex);
653 dpif_netdev_close(struct dpif *dpif)
655 struct dp_netdev *dp = get_dp_netdev(dpif);
662 dpif_netdev_destroy(struct dpif *dpif)
664 struct dp_netdev *dp = get_dp_netdev(dpif);
666 if (!atomic_flag_test_and_set(&dp->destroyed)) {
667 if (ovs_refcount_unref_relaxed(&dp->ref_cnt) == 1) {
668 /* Can't happen: 'dpif' still owns a reference to 'dp'. */
677 dpif_netdev_get_stats(const struct dpif *dpif, struct dpif_dp_stats *stats)
679 struct dp_netdev *dp = get_dp_netdev(dpif);
680 struct dp_netdev_stats *bucket;
683 stats->n_flows = cmap_count(&dp->flow_table);
685 stats->n_hit = stats->n_missed = stats->n_lost = 0;
686 OVSTHREAD_STATS_FOR_EACH_BUCKET (bucket, i, &dp->stats) {
687 ovs_mutex_lock(&bucket->mutex);
688 stats->n_hit += bucket->n[DP_STAT_HIT];
689 stats->n_missed += bucket->n[DP_STAT_MISS];
690 stats->n_lost += bucket->n[DP_STAT_LOST];
691 ovs_mutex_unlock(&bucket->mutex);
693 stats->n_masks = UINT32_MAX;
694 stats->n_mask_hit = UINT64_MAX;
700 dp_netdev_reload_pmd_threads(struct dp_netdev *dp)
704 for (i = 0; i < dp->n_pmd_threads; i++) {
705 struct pmd_thread *f = &dp->pmd_threads[i];
708 atomic_add_relaxed(&f->change_seq, 1, &old_seq);
713 hash_port_no(odp_port_t port_no)
715 return hash_int(odp_to_u32(port_no), 0);
719 do_add_port(struct dp_netdev *dp, const char *devname, const char *type,
721 OVS_REQUIRES(dp->port_mutex)
723 struct netdev_saved_flags *sf;
724 struct dp_netdev_port *port;
725 struct netdev *netdev;
726 enum netdev_flags flags;
727 const char *open_type;
731 /* XXX reject devices already in some dp_netdev. */
733 /* Open and validate network device. */
734 open_type = dpif_netdev_port_open_type(dp->class, type);
735 error = netdev_open(devname, open_type, &netdev);
739 /* XXX reject non-Ethernet devices */
741 netdev_get_flags(netdev, &flags);
742 if (flags & NETDEV_LOOPBACK) {
743 VLOG_ERR("%s: cannot add a loopback device", devname);
744 netdev_close(netdev);
748 port = xzalloc(sizeof *port);
749 port->port_no = port_no;
750 port->netdev = netdev;
751 port->rxq = xmalloc(sizeof *port->rxq * netdev_n_rxq(netdev));
752 port->type = xstrdup(type);
753 for (i = 0; i < netdev_n_rxq(netdev); i++) {
754 error = netdev_rxq_open(netdev, &port->rxq[i], i);
756 && !(error == EOPNOTSUPP && dpif_netdev_class_is_dummy(dp->class))) {
757 VLOG_ERR("%s: cannot receive packets on this network device (%s)",
758 devname, ovs_strerror(errno));
759 netdev_close(netdev);
767 error = netdev_turn_flags_on(netdev, NETDEV_PROMISC, &sf);
769 for (i = 0; i < netdev_n_rxq(netdev); i++) {
770 netdev_rxq_close(port->rxq[i]);
772 netdev_close(netdev);
780 if (netdev_is_pmd(netdev)) {
782 dp_netdev_set_pmd_threads(dp, NR_PMD_THREADS);
783 dp_netdev_reload_pmd_threads(dp);
785 ovs_refcount_init(&port->ref_cnt);
787 cmap_insert(&dp->ports, &port->node, hash_port_no(port_no));
788 seq_change(dp->port_seq);
794 dpif_netdev_port_add(struct dpif *dpif, struct netdev *netdev,
795 odp_port_t *port_nop)
797 struct dp_netdev *dp = get_dp_netdev(dpif);
798 char namebuf[NETDEV_VPORT_NAME_BUFSIZE];
799 const char *dpif_port;
803 ovs_mutex_lock(&dp->port_mutex);
804 dpif_port = netdev_vport_get_dpif_port(netdev, namebuf, sizeof namebuf);
805 if (*port_nop != ODPP_NONE) {
807 error = dp_netdev_lookup_port(dp, *port_nop) ? EBUSY : 0;
809 port_no = choose_port(dp, dpif_port);
810 error = port_no == ODPP_NONE ? EFBIG : 0;
814 error = do_add_port(dp, dpif_port, netdev_get_type(netdev), port_no);
816 ovs_mutex_unlock(&dp->port_mutex);
822 dpif_netdev_port_del(struct dpif *dpif, odp_port_t port_no)
824 struct dp_netdev *dp = get_dp_netdev(dpif);
827 ovs_mutex_lock(&dp->port_mutex);
828 if (port_no == ODPP_LOCAL) {
831 struct dp_netdev_port *port;
833 error = get_port_by_number(dp, port_no, &port);
835 do_del_port(dp, port);
838 ovs_mutex_unlock(&dp->port_mutex);
844 is_valid_port_number(odp_port_t port_no)
846 return port_no != ODPP_NONE;
849 static struct dp_netdev_port *
850 dp_netdev_lookup_port(const struct dp_netdev *dp, odp_port_t port_no)
852 struct dp_netdev_port *port;
854 CMAP_FOR_EACH_WITH_HASH (port, node, hash_port_no(port_no), &dp->ports) {
855 if (port->port_no == port_no) {
863 get_port_by_number(struct dp_netdev *dp,
864 odp_port_t port_no, struct dp_netdev_port **portp)
866 if (!is_valid_port_number(port_no)) {
870 *portp = dp_netdev_lookup_port(dp, port_no);
871 return *portp ? 0 : ENOENT;
876 port_ref(struct dp_netdev_port *port)
879 ovs_refcount_ref(&port->ref_cnt);
884 port_destroy__(struct dp_netdev_port *port)
886 int n_rxq = netdev_n_rxq(port->netdev);
889 netdev_close(port->netdev);
890 netdev_restore_flags(port->sf);
892 for (i = 0; i < n_rxq; i++) {
893 netdev_rxq_close(port->rxq[i]);
901 port_unref(struct dp_netdev_port *port)
903 if (port && ovs_refcount_unref_relaxed(&port->ref_cnt) == 1) {
904 ovsrcu_postpone(port_destroy__, port);
909 get_port_by_name(struct dp_netdev *dp,
910 const char *devname, struct dp_netdev_port **portp)
911 OVS_REQUIRES(dp->port_mutex)
913 struct dp_netdev_port *port;
915 CMAP_FOR_EACH (port, node, &dp->ports) {
916 if (!strcmp(netdev_get_name(port->netdev), devname)) {
925 do_del_port(struct dp_netdev *dp, struct dp_netdev_port *port)
926 OVS_REQUIRES(dp->port_mutex)
928 cmap_remove(&dp->ports, &port->node, hash_odp_port(port->port_no));
929 seq_change(dp->port_seq);
930 if (netdev_is_pmd(port->netdev)) {
931 dp_netdev_reload_pmd_threads(dp);
938 answer_port_query(const struct dp_netdev_port *port,
939 struct dpif_port *dpif_port)
941 dpif_port->name = xstrdup(netdev_get_name(port->netdev));
942 dpif_port->type = xstrdup(port->type);
943 dpif_port->port_no = port->port_no;
947 dpif_netdev_port_query_by_number(const struct dpif *dpif, odp_port_t port_no,
948 struct dpif_port *dpif_port)
950 struct dp_netdev *dp = get_dp_netdev(dpif);
951 struct dp_netdev_port *port;
954 error = get_port_by_number(dp, port_no, &port);
955 if (!error && dpif_port) {
956 answer_port_query(port, dpif_port);
963 dpif_netdev_port_query_by_name(const struct dpif *dpif, const char *devname,
964 struct dpif_port *dpif_port)
966 struct dp_netdev *dp = get_dp_netdev(dpif);
967 struct dp_netdev_port *port;
970 ovs_mutex_lock(&dp->port_mutex);
971 error = get_port_by_name(dp, devname, &port);
972 if (!error && dpif_port) {
973 answer_port_query(port, dpif_port);
975 ovs_mutex_unlock(&dp->port_mutex);
981 dp_netdev_flow_free(struct dp_netdev_flow *flow)
983 struct dp_netdev_flow_stats *bucket;
986 OVSTHREAD_STATS_FOR_EACH_BUCKET (bucket, i, &flow->stats) {
987 ovs_mutex_destroy(&bucket->mutex);
988 free_cacheline(bucket);
990 ovsthread_stats_destroy(&flow->stats);
992 cls_rule_destroy(CONST_CAST(struct cls_rule *, &flow->cr));
993 dp_netdev_actions_free(dp_netdev_flow_get_actions(flow));
997 static void dp_netdev_flow_unref(struct dp_netdev_flow *flow)
999 if (ovs_refcount_unref_relaxed(&flow->ref_cnt) == 1) {
1000 ovsrcu_postpone(dp_netdev_flow_free, flow);
1005 dp_netdev_remove_flow(struct dp_netdev *dp, struct dp_netdev_flow *flow)
1006 OVS_REQUIRES(dp->flow_mutex)
1008 struct cls_rule *cr = CONST_CAST(struct cls_rule *, &flow->cr);
1009 struct cmap_node *node = CONST_CAST(struct cmap_node *, &flow->node);
1011 classifier_remove(&dp->cls, cr);
1012 cmap_remove(&dp->flow_table, node, flow_hash(&flow->flow, 0));
1015 dp_netdev_flow_unref(flow);
1019 dp_netdev_flow_flush(struct dp_netdev *dp)
1021 struct dp_netdev_flow *netdev_flow;
1023 ovs_mutex_lock(&dp->flow_mutex);
1024 CMAP_FOR_EACH (netdev_flow, node, &dp->flow_table) {
1025 dp_netdev_remove_flow(dp, netdev_flow);
1027 ovs_mutex_unlock(&dp->flow_mutex);
1031 dpif_netdev_flow_flush(struct dpif *dpif)
1033 struct dp_netdev *dp = get_dp_netdev(dpif);
1035 dp_netdev_flow_flush(dp);
1039 struct dp_netdev_port_state {
1040 struct cmap_position position;
1045 dpif_netdev_port_dump_start(const struct dpif *dpif OVS_UNUSED, void **statep)
1047 *statep = xzalloc(sizeof(struct dp_netdev_port_state));
1052 dpif_netdev_port_dump_next(const struct dpif *dpif, void *state_,
1053 struct dpif_port *dpif_port)
1055 struct dp_netdev_port_state *state = state_;
1056 struct dp_netdev *dp = get_dp_netdev(dpif);
1057 struct cmap_node *node;
1060 node = cmap_next_position(&dp->ports, &state->position);
1062 struct dp_netdev_port *port;
1064 port = CONTAINER_OF(node, struct dp_netdev_port, node);
1067 state->name = xstrdup(netdev_get_name(port->netdev));
1068 dpif_port->name = state->name;
1069 dpif_port->type = port->type;
1070 dpif_port->port_no = port->port_no;
1081 dpif_netdev_port_dump_done(const struct dpif *dpif OVS_UNUSED, void *state_)
1083 struct dp_netdev_port_state *state = state_;
1090 dpif_netdev_port_poll(const struct dpif *dpif_, char **devnamep OVS_UNUSED)
1092 struct dpif_netdev *dpif = dpif_netdev_cast(dpif_);
1093 uint64_t new_port_seq;
1096 new_port_seq = seq_read(dpif->dp->port_seq);
1097 if (dpif->last_port_seq != new_port_seq) {
1098 dpif->last_port_seq = new_port_seq;
1108 dpif_netdev_port_poll_wait(const struct dpif *dpif_)
1110 struct dpif_netdev *dpif = dpif_netdev_cast(dpif_);
1112 seq_wait(dpif->dp->port_seq, dpif->last_port_seq);
1115 static struct dp_netdev_flow *
1116 dp_netdev_flow_cast(const struct cls_rule *cr)
1118 return cr ? CONTAINER_OF(cr, struct dp_netdev_flow, cr) : NULL;
1121 static bool dp_netdev_flow_ref(struct dp_netdev_flow *flow)
1123 return ovs_refcount_try_ref_rcu(&flow->ref_cnt);
1127 emc_entry_alive(struct emc_entry *ce)
1129 return ce->flow && !ce->flow->dead;
1133 emc_clear_entry(struct emc_entry *ce)
1136 dp_netdev_flow_unref(ce->flow);
1142 emc_change_entry(struct emc_entry *ce, struct dp_netdev_flow *flow,
1143 const struct miniflow *mf, uint32_t hash)
1145 if (ce->flow != flow) {
1147 dp_netdev_flow_unref(ce->flow);
1150 if (dp_netdev_flow_ref(flow)) {
1157 miniflow_clone_inline(&ce->mf.flow, mf, count_1bits(mf->map));
1163 emc_insert(struct emc_cache *cache, const struct miniflow *mf, uint32_t hash,
1164 struct dp_netdev_flow *flow)
1166 struct emc_entry *to_be_replaced = NULL;
1167 struct emc_entry *current_entry;
1169 EMC_FOR_EACH_POS_WITH_HASH(cache, current_entry, hash) {
1170 if (current_entry->hash == hash
1171 && miniflow_equal(¤t_entry->mf.flow, mf)) {
1173 /* We found the entry with the 'mf' miniflow */
1174 emc_change_entry(current_entry, flow, NULL, 0);
1178 /* Replacement policy: put the flow in an empty (not alive) entry, or
1179 * in the first entry where it can be */
1181 || (emc_entry_alive(to_be_replaced)
1182 && !emc_entry_alive(current_entry))
1183 || current_entry->hash < to_be_replaced->hash) {
1184 to_be_replaced = current_entry;
1187 /* We didn't find the miniflow in the cache.
1188 * The 'to_be_replaced' entry is where the new flow will be stored */
1190 emc_change_entry(to_be_replaced, flow, mf, hash);
1193 static inline struct dp_netdev_flow *
1194 emc_lookup(struct emc_cache *cache, const struct miniflow *mf, uint32_t hash)
1196 struct emc_entry *current_entry;
1198 EMC_FOR_EACH_POS_WITH_HASH(cache, current_entry, hash) {
1199 if (current_entry->hash == hash && emc_entry_alive(current_entry)
1200 && miniflow_equal(¤t_entry->mf.flow, mf)) {
1202 /* We found the entry with the 'mf' miniflow */
1203 return current_entry->flow;
1210 static struct dp_netdev_flow *
1211 dp_netdev_lookup_flow(const struct dp_netdev *dp, const struct miniflow *key)
1213 struct dp_netdev_flow *netdev_flow;
1214 struct cls_rule *rule;
1216 classifier_lookup_miniflow_batch(&dp->cls, &key, &rule, 1);
1217 netdev_flow = dp_netdev_flow_cast(rule);
1222 static struct dp_netdev_flow *
1223 dp_netdev_find_flow(const struct dp_netdev *dp, const struct flow *flow)
1225 struct dp_netdev_flow *netdev_flow;
1227 CMAP_FOR_EACH_WITH_HASH (netdev_flow, node, flow_hash(flow, 0),
1229 if (flow_equal(&netdev_flow->flow, flow)) {
1238 get_dpif_flow_stats(const struct dp_netdev_flow *netdev_flow,
1239 struct dpif_flow_stats *stats)
1241 struct dp_netdev_flow_stats *bucket;
1244 memset(stats, 0, sizeof *stats);
1245 OVSTHREAD_STATS_FOR_EACH_BUCKET (bucket, i, &netdev_flow->stats) {
1246 ovs_mutex_lock(&bucket->mutex);
1247 stats->n_packets += bucket->packet_count;
1248 stats->n_bytes += bucket->byte_count;
1249 stats->used = MAX(stats->used, bucket->used);
1250 stats->tcp_flags |= bucket->tcp_flags;
1251 ovs_mutex_unlock(&bucket->mutex);
1256 dp_netdev_flow_to_dpif_flow(const struct dp_netdev_flow *netdev_flow,
1257 struct ofpbuf *buffer, struct dpif_flow *flow)
1259 struct flow_wildcards wc;
1260 struct dp_netdev_actions *actions;
1262 minimask_expand(&netdev_flow->cr.match.mask, &wc);
1263 odp_flow_key_from_mask(buffer, &wc.masks, &netdev_flow->flow,
1264 odp_to_u32(wc.masks.in_port.odp_port),
1266 flow->mask = ofpbuf_data(buffer);
1267 flow->mask_len = ofpbuf_size(buffer);
1269 actions = dp_netdev_flow_get_actions(netdev_flow);
1270 flow->actions = actions->actions;
1271 flow->actions_len = actions->size;
1273 get_dpif_flow_stats(netdev_flow, &flow->stats);
1277 dpif_netdev_mask_from_nlattrs(const struct nlattr *key, uint32_t key_len,
1278 const struct nlattr *mask_key,
1279 uint32_t mask_key_len, const struct flow *flow,
1283 enum odp_key_fitness fitness;
1285 fitness = odp_flow_key_to_mask(mask_key, mask_key_len, mask, flow);
1287 /* This should not happen: it indicates that
1288 * odp_flow_key_from_mask() and odp_flow_key_to_mask()
1289 * disagree on the acceptable form of a mask. Log the problem
1290 * as an error, with enough details to enable debugging. */
1291 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
1293 if (!VLOG_DROP_ERR(&rl)) {
1297 odp_flow_format(key, key_len, mask_key, mask_key_len, NULL, &s,
1299 VLOG_ERR("internal error parsing flow mask %s (%s)",
1300 ds_cstr(&s), odp_key_fitness_to_string(fitness));
1307 enum mf_field_id id;
1308 /* No mask key, unwildcard everything except fields whose
1309 * prerequisities are not met. */
1310 memset(mask, 0x0, sizeof *mask);
1312 for (id = 0; id < MFF_N_IDS; ++id) {
1313 /* Skip registers and metadata. */
1314 if (!(id >= MFF_REG0 && id < MFF_REG0 + FLOW_N_REGS)
1315 && id != MFF_METADATA) {
1316 const struct mf_field *mf = mf_from_id(id);
1317 if (mf_are_prereqs_ok(mf, flow)) {
1318 mf_mask_field(mf, mask);
1324 /* Force unwildcard the in_port.
1326 * We need to do this even in the case where we unwildcard "everything"
1327 * above because "everything" only includes the 16-bit OpenFlow port number
1328 * mask->in_port.ofp_port, which only covers half of the 32-bit datapath
1329 * port number mask->in_port.odp_port. */
1330 mask->in_port.odp_port = u32_to_odp(UINT32_MAX);
1336 dpif_netdev_flow_from_nlattrs(const struct nlattr *key, uint32_t key_len,
1341 if (odp_flow_key_to_flow(key, key_len, flow)) {
1342 /* This should not happen: it indicates that odp_flow_key_from_flow()
1343 * and odp_flow_key_to_flow() disagree on the acceptable form of a
1344 * flow. Log the problem as an error, with enough details to enable
1346 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
1348 if (!VLOG_DROP_ERR(&rl)) {
1352 odp_flow_format(key, key_len, NULL, 0, NULL, &s, true);
1353 VLOG_ERR("internal error parsing flow key %s", ds_cstr(&s));
1360 in_port = flow->in_port.odp_port;
1361 if (!is_valid_port_number(in_port) && in_port != ODPP_NONE) {
1369 dpif_netdev_flow_get(const struct dpif *dpif, const struct dpif_flow_get *get)
1371 struct dp_netdev *dp = get_dp_netdev(dpif);
1372 struct dp_netdev_flow *netdev_flow;
1376 error = dpif_netdev_flow_from_nlattrs(get->key, get->key_len, &key);
1381 netdev_flow = dp_netdev_find_flow(dp, &key);
1384 dp_netdev_flow_to_dpif_flow(netdev_flow, get->buffer, get->flow);
1393 dp_netdev_flow_add(struct dp_netdev *dp, struct match *match,
1394 const struct nlattr *actions, size_t actions_len)
1395 OVS_REQUIRES(dp->flow_mutex)
1397 struct dp_netdev_flow *netdev_flow;
1399 netdev_flow = xzalloc(sizeof *netdev_flow);
1400 *CONST_CAST(struct flow *, &netdev_flow->flow) = match->flow;
1402 ovs_refcount_init(&netdev_flow->ref_cnt);
1404 ovsthread_stats_init(&netdev_flow->stats);
1406 ovsrcu_set(&netdev_flow->actions,
1407 dp_netdev_actions_create(actions, actions_len));
1409 cls_rule_init(CONST_CAST(struct cls_rule *, &netdev_flow->cr),
1410 match, NETDEV_RULE_PRIORITY);
1411 cmap_insert(&dp->flow_table,
1412 CONST_CAST(struct cmap_node *, &netdev_flow->node),
1413 flow_hash(&match->flow, 0));
1414 classifier_insert(&dp->cls,
1415 CONST_CAST(struct cls_rule *, &netdev_flow->cr));
1417 if (OVS_UNLIKELY(VLOG_IS_DBG_ENABLED())) {
1418 struct ds ds = DS_EMPTY_INITIALIZER;
1420 ds_put_cstr(&ds, "flow_add: ");
1421 match_format(match, &ds, OFP_DEFAULT_PRIORITY);
1422 ds_put_cstr(&ds, ", actions:");
1423 format_odp_actions(&ds, actions, actions_len);
1425 VLOG_DBG_RL(&upcall_rl, "%s", ds_cstr(&ds));
1434 clear_stats(struct dp_netdev_flow *netdev_flow)
1436 struct dp_netdev_flow_stats *bucket;
1439 OVSTHREAD_STATS_FOR_EACH_BUCKET (bucket, i, &netdev_flow->stats) {
1440 ovs_mutex_lock(&bucket->mutex);
1442 bucket->packet_count = 0;
1443 bucket->byte_count = 0;
1444 bucket->tcp_flags = 0;
1445 ovs_mutex_unlock(&bucket->mutex);
1450 dpif_netdev_flow_put(struct dpif *dpif, const struct dpif_flow_put *put)
1452 struct dp_netdev *dp = get_dp_netdev(dpif);
1453 struct dp_netdev_flow *netdev_flow;
1454 struct miniflow miniflow;
1458 error = dpif_netdev_flow_from_nlattrs(put->key, put->key_len, &match.flow);
1462 error = dpif_netdev_mask_from_nlattrs(put->key, put->key_len,
1463 put->mask, put->mask_len,
1464 &match.flow, &match.wc.masks);
1468 miniflow_init(&miniflow, &match.flow);
1470 ovs_mutex_lock(&dp->flow_mutex);
1471 netdev_flow = dp_netdev_lookup_flow(dp, &miniflow);
1473 if (put->flags & DPIF_FP_CREATE) {
1474 if (cmap_count(&dp->flow_table) < MAX_FLOWS) {
1476 memset(put->stats, 0, sizeof *put->stats);
1478 error = dp_netdev_flow_add(dp, &match, put->actions,
1487 if (put->flags & DPIF_FP_MODIFY
1488 && flow_equal(&match.flow, &netdev_flow->flow)) {
1489 struct dp_netdev_actions *new_actions;
1490 struct dp_netdev_actions *old_actions;
1492 new_actions = dp_netdev_actions_create(put->actions,
1495 old_actions = dp_netdev_flow_get_actions(netdev_flow);
1496 ovsrcu_set(&netdev_flow->actions, new_actions);
1499 get_dpif_flow_stats(netdev_flow, put->stats);
1501 if (put->flags & DPIF_FP_ZERO_STATS) {
1502 clear_stats(netdev_flow);
1505 ovsrcu_postpone(dp_netdev_actions_free, old_actions);
1506 } else if (put->flags & DPIF_FP_CREATE) {
1509 /* Overlapping flow. */
1513 ovs_mutex_unlock(&dp->flow_mutex);
1514 miniflow_destroy(&miniflow);
1520 dpif_netdev_flow_del(struct dpif *dpif, const struct dpif_flow_del *del)
1522 struct dp_netdev *dp = get_dp_netdev(dpif);
1523 struct dp_netdev_flow *netdev_flow;
1527 error = dpif_netdev_flow_from_nlattrs(del->key, del->key_len, &key);
1532 ovs_mutex_lock(&dp->flow_mutex);
1533 netdev_flow = dp_netdev_find_flow(dp, &key);
1536 get_dpif_flow_stats(netdev_flow, del->stats);
1538 dp_netdev_remove_flow(dp, netdev_flow);
1542 ovs_mutex_unlock(&dp->flow_mutex);
1547 struct dpif_netdev_flow_dump {
1548 struct dpif_flow_dump up;
1549 struct cmap_position pos;
1551 struct ovs_mutex mutex;
1554 static struct dpif_netdev_flow_dump *
1555 dpif_netdev_flow_dump_cast(struct dpif_flow_dump *dump)
1557 return CONTAINER_OF(dump, struct dpif_netdev_flow_dump, up);
1560 static struct dpif_flow_dump *
1561 dpif_netdev_flow_dump_create(const struct dpif *dpif_)
1563 struct dpif_netdev_flow_dump *dump;
1565 dump = xmalloc(sizeof *dump);
1566 dpif_flow_dump_init(&dump->up, dpif_);
1567 memset(&dump->pos, 0, sizeof dump->pos);
1569 ovs_mutex_init(&dump->mutex);
1575 dpif_netdev_flow_dump_destroy(struct dpif_flow_dump *dump_)
1577 struct dpif_netdev_flow_dump *dump = dpif_netdev_flow_dump_cast(dump_);
1579 ovs_mutex_destroy(&dump->mutex);
1584 struct dpif_netdev_flow_dump_thread {
1585 struct dpif_flow_dump_thread up;
1586 struct dpif_netdev_flow_dump *dump;
1587 struct odputil_keybuf keybuf[FLOW_DUMP_MAX_BATCH];
1588 struct odputil_keybuf maskbuf[FLOW_DUMP_MAX_BATCH];
1591 static struct dpif_netdev_flow_dump_thread *
1592 dpif_netdev_flow_dump_thread_cast(struct dpif_flow_dump_thread *thread)
1594 return CONTAINER_OF(thread, struct dpif_netdev_flow_dump_thread, up);
1597 static struct dpif_flow_dump_thread *
1598 dpif_netdev_flow_dump_thread_create(struct dpif_flow_dump *dump_)
1600 struct dpif_netdev_flow_dump *dump = dpif_netdev_flow_dump_cast(dump_);
1601 struct dpif_netdev_flow_dump_thread *thread;
1603 thread = xmalloc(sizeof *thread);
1604 dpif_flow_dump_thread_init(&thread->up, &dump->up);
1605 thread->dump = dump;
1610 dpif_netdev_flow_dump_thread_destroy(struct dpif_flow_dump_thread *thread_)
1612 struct dpif_netdev_flow_dump_thread *thread
1613 = dpif_netdev_flow_dump_thread_cast(thread_);
1619 dpif_netdev_flow_dump_next(struct dpif_flow_dump_thread *thread_,
1620 struct dpif_flow *flows, int max_flows)
1622 struct dpif_netdev_flow_dump_thread *thread
1623 = dpif_netdev_flow_dump_thread_cast(thread_);
1624 struct dpif_netdev_flow_dump *dump = thread->dump;
1625 struct dpif_netdev *dpif = dpif_netdev_cast(thread->up.dpif);
1626 struct dp_netdev_flow *netdev_flows[FLOW_DUMP_MAX_BATCH];
1627 struct dp_netdev *dp = get_dp_netdev(&dpif->dpif);
1631 ovs_mutex_lock(&dump->mutex);
1632 if (!dump->status) {
1633 for (n_flows = 0; n_flows < MIN(max_flows, FLOW_DUMP_MAX_BATCH);
1635 struct cmap_node *node;
1637 node = cmap_next_position(&dp->flow_table, &dump->pos);
1642 netdev_flows[n_flows] = CONTAINER_OF(node, struct dp_netdev_flow,
1646 ovs_mutex_unlock(&dump->mutex);
1648 for (i = 0; i < n_flows; i++) {
1649 struct odputil_keybuf *maskbuf = &thread->maskbuf[i];
1650 struct odputil_keybuf *keybuf = &thread->keybuf[i];
1651 struct dp_netdev_flow *netdev_flow = netdev_flows[i];
1652 struct dpif_flow *f = &flows[i];
1653 struct dp_netdev_actions *dp_actions;
1654 struct flow_wildcards wc;
1657 minimask_expand(&netdev_flow->cr.match.mask, &wc);
1660 ofpbuf_use_stack(&buf, keybuf, sizeof *keybuf);
1661 odp_flow_key_from_flow(&buf, &netdev_flow->flow, &wc.masks,
1662 netdev_flow->flow.in_port.odp_port, true);
1663 f->key = ofpbuf_data(&buf);
1664 f->key_len = ofpbuf_size(&buf);
1667 ofpbuf_use_stack(&buf, maskbuf, sizeof *maskbuf);
1668 odp_flow_key_from_mask(&buf, &wc.masks, &netdev_flow->flow,
1669 odp_to_u32(wc.masks.in_port.odp_port),
1671 f->mask = ofpbuf_data(&buf);
1672 f->mask_len = ofpbuf_size(&buf);
1675 dp_actions = dp_netdev_flow_get_actions(netdev_flow);
1676 f->actions = dp_actions->actions;
1677 f->actions_len = dp_actions->size;
1680 get_dpif_flow_stats(netdev_flow, &f->stats);
1687 dpif_netdev_execute(struct dpif *dpif, struct dpif_execute *execute)
1689 struct dp_netdev *dp = get_dp_netdev(dpif);
1690 struct dpif_packet packet, *pp;
1691 struct pkt_metadata *md = &execute->md;
1693 if (ofpbuf_size(execute->packet) < ETH_HEADER_LEN ||
1694 ofpbuf_size(execute->packet) > UINT16_MAX) {
1698 packet.ofpbuf = *execute->packet;
1701 ovs_mutex_lock(&dp->emc_mutex);
1702 dp_netdev_execute_actions(dp, &pp, 1, false, md,
1703 &dp->flow_cache, execute->actions,
1704 execute->actions_len);
1705 ovs_mutex_unlock(&dp->emc_mutex);
1707 /* Even though may_steal is set to false, some actions could modify or
1708 * reallocate the ofpbuf memory. We need to pass those changes to the
1710 *execute->packet = packet.ofpbuf;
1716 dpif_netdev_operate(struct dpif *dpif, struct dpif_op **ops, size_t n_ops)
1720 for (i = 0; i < n_ops; i++) {
1721 struct dpif_op *op = ops[i];
1724 case DPIF_OP_FLOW_PUT:
1725 op->error = dpif_netdev_flow_put(dpif, &op->u.flow_put);
1728 case DPIF_OP_FLOW_DEL:
1729 op->error = dpif_netdev_flow_del(dpif, &op->u.flow_del);
1732 case DPIF_OP_EXECUTE:
1733 op->error = dpif_netdev_execute(dpif, &op->u.execute);
1736 case DPIF_OP_FLOW_GET:
1737 op->error = dpif_netdev_flow_get(dpif, &op->u.flow_get);
1744 dpif_netdev_queue_to_priority(const struct dpif *dpif OVS_UNUSED,
1745 uint32_t queue_id, uint32_t *priority)
1747 *priority = queue_id;
1752 /* Creates and returns a new 'struct dp_netdev_actions', with a reference count
1753 * of 1, whose actions are a copy of from the 'ofpacts_len' bytes of
1755 struct dp_netdev_actions *
1756 dp_netdev_actions_create(const struct nlattr *actions, size_t size)
1758 struct dp_netdev_actions *netdev_actions;
1760 netdev_actions = xmalloc(sizeof *netdev_actions);
1761 netdev_actions->actions = xmemdup(actions, size);
1762 netdev_actions->size = size;
1764 return netdev_actions;
1767 struct dp_netdev_actions *
1768 dp_netdev_flow_get_actions(const struct dp_netdev_flow *flow)
1770 return ovsrcu_get(struct dp_netdev_actions *, &flow->actions);
1774 dp_netdev_actions_free(struct dp_netdev_actions *actions)
1776 free(actions->actions);
1782 dp_netdev_process_rxq_port(struct dp_netdev *dp,
1783 struct emc_cache *flow_cache,
1784 struct dp_netdev_port *port,
1785 struct netdev_rxq *rxq)
1787 struct dpif_packet *packets[NETDEV_MAX_RX_BATCH];
1790 error = netdev_rxq_recv(rxq, packets, &cnt);
1792 dp_netdev_port_input(dp, flow_cache, packets, cnt, port->port_no);
1793 } else if (error != EAGAIN && error != EOPNOTSUPP) {
1794 static struct vlog_rate_limit rl
1795 = VLOG_RATE_LIMIT_INIT(1, 5);
1797 VLOG_ERR_RL(&rl, "error receiving data from %s: %s",
1798 netdev_get_name(port->netdev),
1799 ovs_strerror(error));
1804 dpif_netdev_run(struct dpif *dpif)
1806 struct dp_netdev_port *port;
1807 struct dp_netdev *dp = get_dp_netdev(dpif);
1809 ovs_mutex_lock(&dp->emc_mutex);
1810 CMAP_FOR_EACH (port, node, &dp->ports) {
1811 if (!netdev_is_pmd(port->netdev)) {
1814 for (i = 0; i < netdev_n_rxq(port->netdev); i++) {
1815 dp_netdev_process_rxq_port(dp, &dp->flow_cache, port,
1820 ovs_mutex_unlock(&dp->emc_mutex);
1824 dpif_netdev_wait(struct dpif *dpif)
1826 struct dp_netdev_port *port;
1827 struct dp_netdev *dp = get_dp_netdev(dpif);
1829 ovs_mutex_lock(&dp_netdev_mutex);
1830 CMAP_FOR_EACH (port, node, &dp->ports) {
1831 if (!netdev_is_pmd(port->netdev)) {
1834 for (i = 0; i < netdev_n_rxq(port->netdev); i++) {
1835 netdev_rxq_wait(port->rxq[i]);
1839 ovs_mutex_unlock(&dp_netdev_mutex);
1843 struct dp_netdev_port *port;
1844 struct netdev_rxq *rx;
1848 pmd_load_queues(struct pmd_thread *f,
1849 struct rxq_poll **ppoll_list, int poll_cnt)
1851 struct dp_netdev *dp = f->dp;
1852 struct rxq_poll *poll_list = *ppoll_list;
1853 struct dp_netdev_port *port;
1858 /* Simple scheduler for netdev rx polling. */
1859 for (i = 0; i < poll_cnt; i++) {
1860 port_unref(poll_list[i].port);
1866 CMAP_FOR_EACH (port, node, &f->dp->ports) {
1867 if (netdev_is_pmd(port->netdev)) {
1870 for (i = 0; i < netdev_n_rxq(port->netdev); i++) {
1871 if ((index % dp->n_pmd_threads) == id) {
1872 poll_list = xrealloc(poll_list, sizeof *poll_list * (poll_cnt + 1));
1875 poll_list[poll_cnt].port = port;
1876 poll_list[poll_cnt].rx = port->rxq[i];
1884 *ppoll_list = poll_list;
1889 pmd_thread_main(void *f_)
1891 struct pmd_thread *f = f_;
1892 struct dp_netdev *dp = f->dp;
1893 unsigned int lc = 0;
1894 struct rxq_poll *poll_list;
1895 unsigned int port_seq = PMD_INITIAL_SEQ;
1902 pmd_thread_setaffinity_cpu(f->id);
1904 emc_cache_init(&f->flow_cache);
1905 poll_cnt = pmd_load_queues(f, &poll_list, poll_cnt);
1910 for (i = 0; i < poll_cnt; i++) {
1911 dp_netdev_process_rxq_port(dp, &f->flow_cache, poll_list[i].port,
1922 atomic_read_relaxed(&f->change_seq, &seq);
1923 if (seq != port_seq) {
1930 emc_cache_uninit(&f->flow_cache);
1932 if (!latch_is_set(&f->dp->exit_latch)){
1936 for (i = 0; i < poll_cnt; i++) {
1937 port_unref(poll_list[i].port);
1945 dp_netdev_disable_upcall(struct dp_netdev *dp)
1946 OVS_ACQUIRES(dp->upcall_rwlock)
1948 fat_rwlock_wrlock(&dp->upcall_rwlock);
1952 dpif_netdev_disable_upcall(struct dpif *dpif)
1953 OVS_NO_THREAD_SAFETY_ANALYSIS
1955 struct dp_netdev *dp = get_dp_netdev(dpif);
1956 dp_netdev_disable_upcall(dp);
1960 dp_netdev_enable_upcall(struct dp_netdev *dp)
1961 OVS_RELEASES(dp->upcall_rwlock)
1963 fat_rwlock_unlock(&dp->upcall_rwlock);
1967 dpif_netdev_enable_upcall(struct dpif *dpif)
1968 OVS_NO_THREAD_SAFETY_ANALYSIS
1970 struct dp_netdev *dp = get_dp_netdev(dpif);
1971 dp_netdev_enable_upcall(dp);
1975 dp_netdev_set_pmd_threads(struct dp_netdev *dp, int n)
1979 if (n == dp->n_pmd_threads) {
1983 /* Stop existing threads. */
1984 latch_set(&dp->exit_latch);
1985 dp_netdev_reload_pmd_threads(dp);
1986 for (i = 0; i < dp->n_pmd_threads; i++) {
1987 struct pmd_thread *f = &dp->pmd_threads[i];
1989 xpthread_join(f->thread, NULL);
1991 latch_poll(&dp->exit_latch);
1992 free(dp->pmd_threads);
1994 /* Start new threads. */
1995 dp->pmd_threads = xmalloc(n * sizeof *dp->pmd_threads);
1996 dp->n_pmd_threads = n;
1998 for (i = 0; i < n; i++) {
1999 struct pmd_thread *f = &dp->pmd_threads[i];
2003 atomic_init(&f->change_seq, PMD_INITIAL_SEQ);
2005 /* Each thread will distribute all devices rx-queues among
2007 f->thread = ovs_thread_create("pmd", pmd_thread_main, f);
2013 dp_netdev_flow_stats_new_cb(void)
2015 struct dp_netdev_flow_stats *bucket = xzalloc_cacheline(sizeof *bucket);
2016 ovs_mutex_init(&bucket->mutex);
2021 dp_netdev_flow_used(struct dp_netdev_flow *netdev_flow,
2025 long long int now = time_msec();
2026 struct dp_netdev_flow_stats *bucket;
2028 bucket = ovsthread_stats_bucket_get(&netdev_flow->stats,
2029 dp_netdev_flow_stats_new_cb);
2031 ovs_mutex_lock(&bucket->mutex);
2032 bucket->used = MAX(now, bucket->used);
2033 bucket->packet_count += cnt;
2034 bucket->byte_count += size;
2035 bucket->tcp_flags |= tcp_flags;
2036 ovs_mutex_unlock(&bucket->mutex);
2040 dp_netdev_stats_new_cb(void)
2042 struct dp_netdev_stats *bucket = xzalloc_cacheline(sizeof *bucket);
2043 ovs_mutex_init(&bucket->mutex);
2048 dp_netdev_count_packet(struct dp_netdev *dp, enum dp_stat_type type, int cnt)
2050 struct dp_netdev_stats *bucket;
2052 bucket = ovsthread_stats_bucket_get(&dp->stats, dp_netdev_stats_new_cb);
2053 ovs_mutex_lock(&bucket->mutex);
2054 bucket->n[type] += cnt;
2055 ovs_mutex_unlock(&bucket->mutex);
2059 dp_netdev_upcall(struct dp_netdev *dp, struct dpif_packet *packet_,
2060 struct flow *flow, struct flow_wildcards *wc,
2061 enum dpif_upcall_type type, const struct nlattr *userdata,
2062 struct ofpbuf *actions, struct ofpbuf *put_actions)
2064 struct ofpbuf *packet = &packet_->ofpbuf;
2066 if (type == DPIF_UC_MISS) {
2067 dp_netdev_count_packet(dp, DP_STAT_MISS, 1);
2070 if (OVS_UNLIKELY(!dp->upcall_cb)) {
2074 if (OVS_UNLIKELY(!VLOG_DROP_DBG(&upcall_rl))) {
2075 struct ds ds = DS_EMPTY_INITIALIZER;
2079 ofpbuf_init(&key, 0);
2080 odp_flow_key_from_flow(&key, flow, &wc->masks, flow->in_port.odp_port,
2083 packet_str = ofp_packet_to_string(ofpbuf_data(packet),
2084 ofpbuf_size(packet));
2086 odp_flow_key_format(ofpbuf_data(&key), ofpbuf_size(&key), &ds);
2088 VLOG_DBG("%s: %s upcall:\n%s\n%s", dp->name,
2089 dpif_upcall_type_to_string(type), ds_cstr(&ds), packet_str);
2091 ofpbuf_uninit(&key);
2096 return dp->upcall_cb(packet, flow, type, userdata, actions, wc,
2097 put_actions, dp->upcall_aux);
2100 static inline uint32_t
2101 dpif_netdev_packet_get_dp_hash(struct dpif_packet *packet,
2102 const struct miniflow *mf)
2106 hash = dpif_packet_get_dp_hash(packet);
2107 if (OVS_UNLIKELY(!hash)) {
2108 hash = miniflow_hash_5tuple(mf, 0);
2109 dpif_packet_set_dp_hash(packet, hash);
2114 struct packet_batch {
2115 unsigned int packet_count;
2116 unsigned int byte_count;
2119 struct dp_netdev_flow *flow;
2121 struct dpif_packet *packets[NETDEV_MAX_RX_BATCH];
2122 struct pkt_metadata md;
2126 packet_batch_update(struct packet_batch *batch, struct dpif_packet *packet,
2127 const struct miniflow *mf)
2129 batch->tcp_flags |= miniflow_get_tcp_flags(mf);
2130 batch->packets[batch->packet_count++] = packet;
2131 batch->byte_count += ofpbuf_size(&packet->ofpbuf);
2135 packet_batch_init(struct packet_batch *batch, struct dp_netdev_flow *flow,
2136 struct pkt_metadata *md)
2141 batch->packet_count = 0;
2142 batch->byte_count = 0;
2143 batch->tcp_flags = 0;
2147 packet_batch_execute(struct packet_batch *batch, struct dp_netdev *dp,
2148 struct emc_cache *flow_cache)
2150 struct dp_netdev_actions *actions;
2151 struct dp_netdev_flow *flow = batch->flow;
2153 dp_netdev_flow_used(batch->flow, batch->packet_count, batch->byte_count,
2156 actions = dp_netdev_flow_get_actions(flow);
2158 dp_netdev_execute_actions(dp, batch->packets, batch->packet_count, true,
2159 &batch->md, flow_cache,
2160 actions->actions, actions->size);
2162 dp_netdev_count_packet(dp, DP_STAT_HIT, batch->packet_count);
2166 dp_netdev_queue_batches(struct dpif_packet *pkt, struct pkt_metadata *md,
2167 struct dp_netdev_flow *flow, const struct miniflow *mf,
2168 struct packet_batch *batches, size_t *n_batches,
2171 struct packet_batch *batch = NULL;
2174 if (OVS_UNLIKELY(!flow)) {
2177 /* XXX: This O(n^2) algortihm makes sense if we're operating under the
2178 * assumption that the number of distinct flows (and therefore the
2179 * number of distinct batches) is quite small. If this turns out not
2180 * to be the case, it may make sense to pre sort based on the
2181 * netdev_flow pointer. That done we can get the appropriate batching
2182 * in O(n * log(n)) instead. */
2183 for (j = *n_batches - 1; j >= 0; j--) {
2184 if (batches[j].flow == flow) {
2185 batch = &batches[j];
2186 packet_batch_update(batch, pkt, mf);
2190 if (OVS_UNLIKELY(*n_batches >= max_batches)) {
2194 batch = &batches[(*n_batches)++];
2195 packet_batch_init(batch, flow, md);
2196 packet_batch_update(batch, pkt, mf);
2201 dpif_packet_swap(struct dpif_packet **a, struct dpif_packet **b)
2203 struct dpif_packet *tmp = *a;
2208 /* Try to process all ('cnt') the 'packets' using only the exact match cache
2209 * 'flow_cache'. If a flow is not found for a packet 'packets[i]', or if there
2210 * is no matching batch for a packet's flow, the miniflow is copied into 'keys'
2211 * and the packet pointer is moved at the beginning of the 'packets' array.
2213 * The function returns the number of packets that needs to be processed in the
2214 * 'packets' array (they have been moved to the beginning of the vector).
2216 static inline size_t
2217 emc_processing(struct dp_netdev *dp, struct emc_cache *flow_cache,
2218 struct dpif_packet **packets, size_t cnt,
2219 struct pkt_metadata *md, struct netdev_flow_key *keys)
2221 struct netdev_flow_key key;
2222 struct packet_batch batches[4];
2223 size_t n_batches, i;
2224 size_t notfound_cnt = 0;
2227 miniflow_initialize(&key.flow, key.buf);
2228 for (i = 0; i < cnt; i++) {
2229 struct dp_netdev_flow *flow;
2232 if (OVS_UNLIKELY(ofpbuf_size(&packets[i]->ofpbuf) < ETH_HEADER_LEN)) {
2233 dpif_packet_delete(packets[i]);
2237 miniflow_extract(&packets[i]->ofpbuf, md, &key.flow);
2239 hash = dpif_netdev_packet_get_dp_hash(packets[i], &key.flow);
2241 flow = emc_lookup(flow_cache, &key.flow, hash);
2242 if (OVS_UNLIKELY(!dp_netdev_queue_batches(packets[i], md,
2244 batches, &n_batches,
2245 ARRAY_SIZE(batches)))) {
2246 if (i != notfound_cnt) {
2247 dpif_packet_swap(&packets[i], &packets[notfound_cnt]);
2250 keys[notfound_cnt++] = key;
2254 for (i = 0; i < n_batches; i++) {
2255 packet_batch_execute(&batches[i], dp, flow_cache);
2258 return notfound_cnt;
2262 fast_path_processing(struct dp_netdev *dp, struct emc_cache *flow_cache,
2263 struct dpif_packet **packets, size_t cnt,
2264 struct pkt_metadata *md, struct netdev_flow_key *keys)
2267 const size_t PKT_ARRAY_SIZE = cnt;
2269 /* Sparse doesn't like variable length array */
2270 enum { PKT_ARRAY_SIZE = NETDEV_MAX_RX_BATCH };
2272 struct packet_batch batches[PKT_ARRAY_SIZE];
2273 const struct miniflow *mfs[PKT_ARRAY_SIZE]; /* NULL at bad packets. */
2274 struct cls_rule *rules[PKT_ARRAY_SIZE];
2275 size_t n_batches, i;
2278 for (i = 0; i < cnt; i++) {
2279 mfs[i] = &keys[i].flow;
2281 any_miss = !classifier_lookup_miniflow_batch(&dp->cls, mfs, rules, cnt);
2282 if (OVS_UNLIKELY(any_miss) && !fat_rwlock_tryrdlock(&dp->upcall_rwlock)) {
2283 uint64_t actions_stub[512 / 8], slow_stub[512 / 8];
2284 struct ofpbuf actions, put_actions;
2287 ofpbuf_use_stub(&actions, actions_stub, sizeof actions_stub);
2288 ofpbuf_use_stub(&put_actions, slow_stub, sizeof slow_stub);
2290 for (i = 0; i < cnt; i++) {
2291 const struct dp_netdev_flow *netdev_flow;
2292 struct ofpbuf *add_actions;
2295 if (OVS_LIKELY(rules[i] || !mfs[i])) {
2299 /* It's possible that an earlier slow path execution installed
2300 * the rule this flow needs. In this case, it's a lot cheaper
2301 * to catch it here than execute a miss. */
2302 netdev_flow = dp_netdev_lookup_flow(dp, mfs[i]);
2304 rules[i] = CONST_CAST(struct cls_rule *, &netdev_flow->cr);
2308 miniflow_expand(mfs[i], &match.flow);
2310 ofpbuf_clear(&actions);
2311 ofpbuf_clear(&put_actions);
2313 error = dp_netdev_upcall(dp, packets[i], &match.flow, &match.wc,
2314 DPIF_UC_MISS, NULL, &actions,
2316 if (OVS_UNLIKELY(error && error != ENOSPC)) {
2320 /* We can't allow the packet batching in the next loop to execute
2321 * the actions. Otherwise, if there are any slow path actions,
2322 * we'll send the packet up twice. */
2323 dp_netdev_execute_actions(dp, &packets[i], 1, false, md,
2324 flow_cache, ofpbuf_data(&actions),
2325 ofpbuf_size(&actions));
2327 add_actions = ofpbuf_size(&put_actions)
2331 ovs_mutex_lock(&dp->flow_mutex);
2332 /* XXX: There's a brief race where this flow could have already
2333 * been installed since we last did the flow lookup. This could be
2334 * solved by moving the mutex lock outside the loop, but that's an
2335 * awful long time to be locking everyone out of making flow
2336 * installs. If we move to a per-core classifier, it would be
2338 if (OVS_LIKELY(error != ENOSPC)
2339 && !dp_netdev_lookup_flow(dp, mfs[i])) {
2340 dp_netdev_flow_add(dp, &match, ofpbuf_data(add_actions),
2341 ofpbuf_size(add_actions));
2343 ovs_mutex_unlock(&dp->flow_mutex);
2346 ofpbuf_uninit(&actions);
2347 ofpbuf_uninit(&put_actions);
2348 fat_rwlock_unlock(&dp->upcall_rwlock);
2352 for (i = 0; i < cnt; i++) {
2353 struct dpif_packet *packet = packets[i];
2354 struct dp_netdev_flow *flow;
2356 if (OVS_UNLIKELY(!rules[i] || !mfs[i])) {
2360 flow = dp_netdev_flow_cast(rules[i]);
2361 emc_insert(flow_cache, mfs[i], dpif_packet_get_dp_hash(packet), flow);
2362 dp_netdev_queue_batches(packet, md, flow, mfs[i], batches, &n_batches,
2363 ARRAY_SIZE(batches));
2366 for (i = 0; i < n_batches; i++) {
2367 packet_batch_execute(&batches[i], dp, flow_cache);
2372 dp_netdev_input(struct dp_netdev *dp, struct emc_cache *flow_cache,
2373 struct dpif_packet **packets, int cnt, struct pkt_metadata *md)
2376 const size_t PKT_ARRAY_SIZE = cnt;
2378 /* Sparse doesn't like variable length array */
2379 enum { PKT_ARRAY_SIZE = NETDEV_MAX_RX_BATCH };
2381 struct netdev_flow_key keys[PKT_ARRAY_SIZE];
2384 newcnt = emc_processing(dp, flow_cache, packets, cnt, md, keys);
2385 if (OVS_UNLIKELY(newcnt)) {
2386 fast_path_processing(dp, flow_cache, packets, newcnt, md, keys);
2392 dp_netdev_port_input(struct dp_netdev *dp, struct emc_cache *flow_cache,
2393 struct dpif_packet **packets, int cnt, odp_port_t port_no)
2395 uint32_t *recirc_depth = recirc_depth_get();
2396 struct pkt_metadata md = PKT_METADATA_INITIALIZER(port_no);
2399 dp_netdev_input(dp, flow_cache, packets, cnt, &md);
2402 struct dp_netdev_execute_aux {
2403 struct dp_netdev *dp;
2404 struct emc_cache *flow_cache;
2408 dpif_netdev_register_upcall_cb(struct dpif *dpif, upcall_callback *cb,
2411 struct dp_netdev *dp = get_dp_netdev(dpif);
2412 dp->upcall_aux = aux;
2417 dp_execute_cb(void *aux_, struct dpif_packet **packets, int cnt,
2418 struct pkt_metadata *md,
2419 const struct nlattr *a, bool may_steal)
2420 OVS_NO_THREAD_SAFETY_ANALYSIS
2422 struct dp_netdev_execute_aux *aux = aux_;
2423 uint32_t *depth = recirc_depth_get();
2424 struct dp_netdev *dp = aux->dp;
2425 int type = nl_attr_type(a);
2426 struct dp_netdev_port *p;
2429 switch ((enum ovs_action_attr)type) {
2430 case OVS_ACTION_ATTR_OUTPUT:
2431 p = dp_netdev_lookup_port(dp, u32_to_odp(nl_attr_get_u32(a)));
2432 if (OVS_LIKELY(p)) {
2433 netdev_send(p->netdev, packets, cnt, may_steal);
2434 } else if (may_steal) {
2435 for (i = 0; i < cnt; i++) {
2436 dpif_packet_delete(packets[i]);
2441 case OVS_ACTION_ATTR_USERSPACE:
2442 if (!fat_rwlock_tryrdlock(&dp->upcall_rwlock)) {
2443 const struct nlattr *userdata;
2444 struct ofpbuf actions;
2447 userdata = nl_attr_find_nested(a, OVS_USERSPACE_ATTR_USERDATA);
2448 ofpbuf_init(&actions, 0);
2450 for (i = 0; i < cnt; i++) {
2453 ofpbuf_clear(&actions);
2455 flow_extract(&packets[i]->ofpbuf, md, &flow);
2456 error = dp_netdev_upcall(dp, packets[i], &flow, NULL,
2457 DPIF_UC_ACTION, userdata, &actions,
2459 if (!error || error == ENOSPC) {
2460 dp_netdev_execute_actions(dp, &packets[i], 1, false, md,
2462 ofpbuf_data(&actions),
2463 ofpbuf_size(&actions));
2467 dpif_packet_delete(packets[i]);
2470 ofpbuf_uninit(&actions);
2471 fat_rwlock_unlock(&dp->upcall_rwlock);
2476 case OVS_ACTION_ATTR_HASH: {
2477 const struct ovs_action_hash *hash_act;
2480 hash_act = nl_attr_get(a);
2482 for (i = 0; i < cnt; i++) {
2484 if (hash_act->hash_alg == OVS_HASH_ALG_L4) {
2485 /* Hash need not be symmetric, nor does it need to include
2487 hash = hash_2words(dpif_packet_get_dp_hash(packets[i]),
2488 hash_act->hash_basis);
2490 VLOG_WARN("Unknown hash algorithm specified "
2491 "for the hash action.");
2496 hash = 1; /* 0 is not valid */
2502 dpif_packet_set_dp_hash(packets[i], hash);
2507 case OVS_ACTION_ATTR_RECIRC:
2508 if (*depth < MAX_RECIRC_DEPTH) {
2511 for (i = 0; i < cnt; i++) {
2512 struct dpif_packet *recirc_pkt;
2513 struct pkt_metadata recirc_md = *md;
2515 recirc_pkt = (may_steal) ? packets[i]
2516 : dpif_packet_clone(packets[i]);
2518 recirc_md.recirc_id = nl_attr_get_u32(a);
2520 /* Hash is private to each packet */
2521 recirc_md.dp_hash = dpif_packet_get_dp_hash(packets[i]);
2523 dp_netdev_input(dp, aux->flow_cache, &recirc_pkt, 1,
2530 VLOG_WARN("Packet dropped. Max recirculation depth exceeded.");
2532 for (i = 0; i < cnt; i++) {
2533 dpif_packet_delete(packets[i]);
2539 case OVS_ACTION_ATTR_PUSH_VLAN:
2540 case OVS_ACTION_ATTR_POP_VLAN:
2541 case OVS_ACTION_ATTR_PUSH_MPLS:
2542 case OVS_ACTION_ATTR_POP_MPLS:
2543 case OVS_ACTION_ATTR_SET:
2544 case OVS_ACTION_ATTR_SAMPLE:
2545 case OVS_ACTION_ATTR_UNSPEC:
2546 case __OVS_ACTION_ATTR_MAX:
2552 dp_netdev_execute_actions(struct dp_netdev *dp,
2553 struct dpif_packet **packets, int cnt,
2554 bool may_steal, struct pkt_metadata *md,
2555 struct emc_cache *flow_cache,
2556 const struct nlattr *actions, size_t actions_len)
2558 struct dp_netdev_execute_aux aux = {dp, flow_cache};
2560 odp_execute_actions(&aux, packets, cnt, may_steal, md, actions,
2561 actions_len, dp_execute_cb);
2564 const struct dpif_class dpif_netdev_class = {
2566 dpif_netdev_enumerate,
2567 dpif_netdev_port_open_type,
2570 dpif_netdev_destroy,
2573 dpif_netdev_get_stats,
2574 dpif_netdev_port_add,
2575 dpif_netdev_port_del,
2576 dpif_netdev_port_query_by_number,
2577 dpif_netdev_port_query_by_name,
2578 NULL, /* port_get_pid */
2579 dpif_netdev_port_dump_start,
2580 dpif_netdev_port_dump_next,
2581 dpif_netdev_port_dump_done,
2582 dpif_netdev_port_poll,
2583 dpif_netdev_port_poll_wait,
2584 dpif_netdev_flow_flush,
2585 dpif_netdev_flow_dump_create,
2586 dpif_netdev_flow_dump_destroy,
2587 dpif_netdev_flow_dump_thread_create,
2588 dpif_netdev_flow_dump_thread_destroy,
2589 dpif_netdev_flow_dump_next,
2590 dpif_netdev_operate,
2591 NULL, /* recv_set */
2592 NULL, /* handlers_set */
2593 dpif_netdev_queue_to_priority,
2595 NULL, /* recv_wait */
2596 NULL, /* recv_purge */
2597 dpif_netdev_register_upcall_cb,
2598 dpif_netdev_enable_upcall,
2599 dpif_netdev_disable_upcall,
2603 dpif_dummy_change_port_number(struct unixctl_conn *conn, int argc OVS_UNUSED,
2604 const char *argv[], void *aux OVS_UNUSED)
2606 struct dp_netdev_port *old_port;
2607 struct dp_netdev_port *new_port;
2608 struct dp_netdev *dp;
2611 ovs_mutex_lock(&dp_netdev_mutex);
2612 dp = shash_find_data(&dp_netdevs, argv[1]);
2613 if (!dp || !dpif_netdev_class_is_dummy(dp->class)) {
2614 ovs_mutex_unlock(&dp_netdev_mutex);
2615 unixctl_command_reply_error(conn, "unknown datapath or not a dummy");
2618 ovs_refcount_ref(&dp->ref_cnt);
2619 ovs_mutex_unlock(&dp_netdev_mutex);
2621 ovs_mutex_lock(&dp->port_mutex);
2622 if (get_port_by_name(dp, argv[2], &old_port)) {
2623 unixctl_command_reply_error(conn, "unknown port");
2627 port_no = u32_to_odp(atoi(argv[3]));
2628 if (!port_no || port_no == ODPP_NONE) {
2629 unixctl_command_reply_error(conn, "bad port number");
2632 if (dp_netdev_lookup_port(dp, port_no)) {
2633 unixctl_command_reply_error(conn, "port number already in use");
2637 /* Remove old port. */
2638 cmap_remove(&dp->ports, &old_port->node, hash_port_no(old_port->port_no));
2639 ovsrcu_postpone(free, old_port);
2641 /* Insert new port (cmap semantics mean we cannot re-insert 'old_port'). */
2642 new_port = xmemdup(old_port, sizeof *old_port);
2643 new_port->port_no = port_no;
2644 cmap_insert(&dp->ports, &new_port->node, hash_port_no(port_no));
2646 seq_change(dp->port_seq);
2647 unixctl_command_reply(conn, NULL);
2650 ovs_mutex_unlock(&dp->port_mutex);
2651 dp_netdev_unref(dp);
2655 dpif_dummy_delete_port(struct unixctl_conn *conn, int argc OVS_UNUSED,
2656 const char *argv[], void *aux OVS_UNUSED)
2658 struct dp_netdev_port *port;
2659 struct dp_netdev *dp;
2661 ovs_mutex_lock(&dp_netdev_mutex);
2662 dp = shash_find_data(&dp_netdevs, argv[1]);
2663 if (!dp || !dpif_netdev_class_is_dummy(dp->class)) {
2664 ovs_mutex_unlock(&dp_netdev_mutex);
2665 unixctl_command_reply_error(conn, "unknown datapath or not a dummy");
2668 ovs_refcount_ref(&dp->ref_cnt);
2669 ovs_mutex_unlock(&dp_netdev_mutex);
2671 ovs_mutex_lock(&dp->port_mutex);
2672 if (get_port_by_name(dp, argv[2], &port)) {
2673 unixctl_command_reply_error(conn, "unknown port");
2674 } else if (port->port_no == ODPP_LOCAL) {
2675 unixctl_command_reply_error(conn, "can't delete local port");
2677 do_del_port(dp, port);
2678 unixctl_command_reply(conn, NULL);
2680 ovs_mutex_unlock(&dp->port_mutex);
2682 dp_netdev_unref(dp);
2686 dpif_dummy_register__(const char *type)
2688 struct dpif_class *class;
2690 class = xmalloc(sizeof *class);
2691 *class = dpif_netdev_class;
2692 class->type = xstrdup(type);
2693 dp_register_provider(class);
2697 dpif_dummy_register(bool override)
2704 dp_enumerate_types(&types);
2705 SSET_FOR_EACH (type, &types) {
2706 if (!dp_unregister_provider(type)) {
2707 dpif_dummy_register__(type);
2710 sset_destroy(&types);
2713 dpif_dummy_register__("dummy");
2715 unixctl_command_register("dpif-dummy/change-port-number",
2716 "DP PORT NEW-NUMBER",
2717 3, 3, dpif_dummy_change_port_number, NULL);
2718 unixctl_command_register("dpif-dummy/delete-port", "DP PORT",
2719 2, 2, dpif_dummy_delete_port, NULL);