2 * Copyright (c) 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.
31 #include "dpif-netdev.h"
33 #include "netdev-dpdk.h"
34 #include "netdev-provider.h"
35 #include "netdev-vport.h"
37 #include "ofp-print.h"
39 #include "ovs-thread.h"
41 #include "packet-dpif.h"
45 #include "unaligned.h"
50 VLOG_DEFINE_THIS_MODULE(dpdk);
51 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20);
53 #define DPDK_PORT_WATCHDOG_INTERVAL 5
55 #define OVS_CACHE_LINE_SIZE CACHE_LINE_SIZE
56 #define OVS_VPORT_DPDK "ovs_dpdk"
59 * need to reserve tons of extra space in the mbufs so we can align the
60 * DMA addresses to 4KB.
63 #define MTU_TO_MAX_LEN(mtu) ((mtu) + ETHER_HDR_LEN + ETHER_CRC_LEN)
64 #define MBUF_SIZE(mtu) (MTU_TO_MAX_LEN(mtu) + (512) + \
65 sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM)
67 /* XXX: mempool size should be based on system resources. */
68 #define NB_MBUF (4096 * 64)
69 #define MP_CACHE_SZ (256 * 2)
72 #define NON_PMD_THREAD_TX_QUEUE 0
74 #define NIC_PORT_RX_Q_SIZE 2048 /* Size of Physical NIC RX Queue, Max (n+32<=4096)*/
75 #define NIC_PORT_TX_Q_SIZE 2048 /* Size of Physical NIC TX Queue, Max (n+32<=4096)*/
77 /* XXX: Needs per NIC value for these constants. */
78 #define RX_PTHRESH 32 /* Default values of RX prefetch threshold reg. */
79 #define RX_HTHRESH 32 /* Default values of RX host threshold reg. */
80 #define RX_WTHRESH 16 /* Default values of RX write-back threshold reg. */
82 #define TX_PTHRESH 36 /* Default values of TX prefetch threshold reg. */
83 #define TX_HTHRESH 0 /* Default values of TX host threshold reg. */
84 #define TX_WTHRESH 0 /* Default values of TX write-back threshold reg. */
86 static const struct rte_eth_conf port_conf = {
88 .mq_mode = ETH_MQ_RX_RSS,
90 .header_split = 0, /* Header Split disabled */
91 .hw_ip_checksum = 0, /* IP checksum offload disabled */
92 .hw_vlan_filter = 0, /* VLAN filtering disabled */
93 .jumbo_frame = 0, /* Jumbo Frame Support disabled */
99 .rss_hf = ETH_RSS_IPV4_TCP | ETH_RSS_IPV4 | ETH_RSS_IPV6
100 | ETH_RSS_IPV4_UDP | ETH_RSS_IPV6_TCP | ETH_RSS_IPV6_UDP,
104 .mq_mode = ETH_MQ_TX_NONE,
108 static const struct rte_eth_rxconf rx_conf = {
110 .pthresh = RX_PTHRESH,
111 .hthresh = RX_HTHRESH,
112 .wthresh = RX_WTHRESH,
116 static const struct rte_eth_txconf tx_conf = {
118 .pthresh = TX_PTHRESH,
119 .hthresh = TX_HTHRESH,
120 .wthresh = TX_WTHRESH,
124 .txq_flags = ETH_TXQ_FLAGS_NOMULTSEGS|ETH_TXQ_FLAGS_NOOFFLOADS,
127 enum { MAX_RX_QUEUE_LEN = 192 };
128 enum { MAX_TX_QUEUE_LEN = 384 };
129 enum { DPDK_RING_SIZE = 256 };
130 BUILD_ASSERT_DECL(IS_POW2(DPDK_RING_SIZE));
131 enum { DRAIN_TSC = 200000ULL };
133 static int rte_eal_init_ret = ENODEV;
135 static struct ovs_mutex dpdk_mutex = OVS_MUTEX_INITIALIZER;
137 /* Contains all 'struct dpdk_dev's. */
138 static struct list dpdk_list OVS_GUARDED_BY(dpdk_mutex)
139 = LIST_INITIALIZER(&dpdk_list);
141 static struct list dpdk_mp_list OVS_GUARDED_BY(dpdk_mutex)
142 = LIST_INITIALIZER(&dpdk_mp_list);
144 /* This mutex must be used by non pmd threads when allocating or freeing
145 * mbufs through mempools. Since dpdk_queue_pkts() and dpdk_queue_flush() may
146 * use mempools, a non pmd thread should hold this mutex while calling them */
147 struct ovs_mutex nonpmd_mempool_mutex = OVS_MUTEX_INITIALIZER;
150 struct rte_mempool *mp;
154 struct list list_node OVS_GUARDED_BY(dpdk_mutex);
157 struct dpdk_tx_queue {
158 rte_spinlock_t tx_lock;
161 struct rte_mbuf *burst_pkts[MAX_TX_QUEUE_LEN];
164 /* dpdk has no way to remove dpdk ring ethernet devices
165 so we have to keep them around once they've been created
168 static struct list dpdk_ring_list OVS_GUARDED_BY(dpdk_mutex)
169 = LIST_INITIALIZER(&dpdk_ring_list);
172 /* For the client rings */
173 struct rte_ring *cring_tx;
174 struct rte_ring *cring_rx;
175 int user_port_id; /* User given port no, parsed from port name */
176 int eth_port_id; /* ethernet device port id */
177 struct list list_node OVS_GUARDED_BY(dpdk_mutex);
185 struct dpdk_tx_queue tx_q[NR_QUEUE];
187 struct ovs_mutex mutex OVS_ACQ_AFTER(dpdk_mutex);
189 struct dpdk_mp *dpdk_mp;
193 struct netdev_stats stats_offset;
194 struct netdev_stats stats;
196 uint8_t hwaddr[ETH_ADDR_LEN];
197 enum netdev_flags flags;
199 struct rte_eth_link link;
203 struct list list_node OVS_GUARDED_BY(dpdk_mutex);
206 struct netdev_rxq_dpdk {
207 struct netdev_rxq up;
211 static bool thread_is_pmd(void);
213 static int netdev_dpdk_construct(struct netdev *);
216 is_dpdk_class(const struct netdev_class *class)
218 return class->construct == netdev_dpdk_construct;
221 /* XXX: use dpdk malloc for entire OVS. infact huge page shld be used
222 * for all other sengments data, bss and text. */
225 dpdk_rte_mzalloc(size_t sz)
229 ptr = rte_zmalloc(OVS_VPORT_DPDK, sz, OVS_CACHE_LINE_SIZE);
236 /* XXX this function should be called only by pmd threads (or by non pmd
237 * threads holding the nonpmd_mempool_mutex) */
239 free_dpdk_buf(struct dpif_packet *p)
241 struct rte_mbuf *pkt = (struct rte_mbuf *) p;
243 rte_pktmbuf_free_seg(pkt);
247 __rte_pktmbuf_init(struct rte_mempool *mp,
248 void *opaque_arg OVS_UNUSED,
250 unsigned i OVS_UNUSED)
252 struct rte_mbuf *m = _m;
253 uint32_t buf_len = mp->elt_size - sizeof(struct dpif_packet);
255 RTE_MBUF_ASSERT(mp->elt_size >= sizeof(struct dpif_packet));
257 memset(m, 0, mp->elt_size);
259 /* start of buffer is just after mbuf structure */
260 m->buf_addr = (char *)m + sizeof(struct dpif_packet);
261 m->buf_physaddr = rte_mempool_virt2phy(mp, m) +
262 sizeof(struct dpif_packet);
263 m->buf_len = (uint16_t)buf_len;
265 /* keep some headroom between start of buffer and data */
266 m->pkt.data = (char*) m->buf_addr + RTE_MIN(RTE_PKTMBUF_HEADROOM, m->buf_len);
268 /* init some constant fields */
269 m->type = RTE_MBUF_PKT;
272 m->pkt.in_port = 0xff;
276 ovs_rte_pktmbuf_init(struct rte_mempool *mp,
277 void *opaque_arg OVS_UNUSED,
279 unsigned i OVS_UNUSED)
281 struct rte_mbuf *m = _m;
283 __rte_pktmbuf_init(mp, opaque_arg, _m, i);
285 ofpbuf_init_dpdk((struct ofpbuf *) m, m->buf_len);
288 static struct dpdk_mp *
289 dpdk_mp_get(int socket_id, int mtu) OVS_REQUIRES(dpdk_mutex)
291 struct dpdk_mp *dmp = NULL;
292 char mp_name[RTE_MEMPOOL_NAMESIZE];
294 LIST_FOR_EACH (dmp, list_node, &dpdk_mp_list) {
295 if (dmp->socket_id == socket_id && dmp->mtu == mtu) {
301 dmp = dpdk_rte_mzalloc(sizeof *dmp);
302 dmp->socket_id = socket_id;
306 if (snprintf(mp_name, RTE_MEMPOOL_NAMESIZE, "ovs_mp_%d_%d", dmp->mtu,
307 dmp->socket_id) < 0) {
311 dmp->mp = rte_mempool_create(mp_name, NB_MBUF, MBUF_SIZE(mtu),
313 sizeof(struct rte_pktmbuf_pool_private),
314 rte_pktmbuf_pool_init, NULL,
315 ovs_rte_pktmbuf_init, NULL,
318 if (dmp->mp == NULL) {
322 list_push_back(&dpdk_mp_list, &dmp->list_node);
327 dpdk_mp_put(struct dpdk_mp *dmp)
335 ovs_assert(dmp->refcount >= 0);
338 /* I could not find any API to destroy mp. */
339 if (dmp->refcount == 0) {
340 list_delete(dmp->list_node);
341 /* destroy mp-pool. */
347 check_link_status(struct netdev_dpdk *dev)
349 struct rte_eth_link link;
351 rte_eth_link_get_nowait(dev->port_id, &link);
353 if (dev->link.link_status != link.link_status) {
354 netdev_change_seq_changed(&dev->up);
356 dev->link_reset_cnt++;
358 if (dev->link.link_status) {
359 VLOG_DBG_RL(&rl, "Port %d Link Up - speed %u Mbps - %s",
360 dev->port_id, (unsigned)dev->link.link_speed,
361 (dev->link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
362 ("full-duplex") : ("half-duplex"));
364 VLOG_DBG_RL(&rl, "Port %d Link Down", dev->port_id);
370 dpdk_watchdog(void *dummy OVS_UNUSED)
372 struct netdev_dpdk *dev;
374 pthread_detach(pthread_self());
377 ovs_mutex_lock(&dpdk_mutex);
378 LIST_FOR_EACH (dev, list_node, &dpdk_list) {
379 ovs_mutex_lock(&dev->mutex);
380 check_link_status(dev);
381 ovs_mutex_unlock(&dev->mutex);
383 ovs_mutex_unlock(&dpdk_mutex);
384 xsleep(DPDK_PORT_WATCHDOG_INTERVAL);
391 dpdk_eth_dev_init(struct netdev_dpdk *dev) OVS_REQUIRES(dpdk_mutex)
393 struct rte_pktmbuf_pool_private *mbp_priv;
394 struct ether_addr eth_addr;
398 if (dev->port_id < 0 || dev->port_id >= rte_eth_dev_count()) {
402 diag = rte_eth_dev_configure(dev->port_id, NR_QUEUE, NR_QUEUE, &port_conf);
404 VLOG_ERR("eth dev config error %d",diag);
408 for (i = 0; i < NR_QUEUE; i++) {
409 diag = rte_eth_tx_queue_setup(dev->port_id, i, NIC_PORT_TX_Q_SIZE,
410 dev->socket_id, &tx_conf);
412 VLOG_ERR("eth dev tx queue setup error %d",diag);
417 for (i = 0; i < NR_QUEUE; i++) {
418 diag = rte_eth_rx_queue_setup(dev->port_id, i, NIC_PORT_RX_Q_SIZE,
420 &rx_conf, dev->dpdk_mp->mp);
422 VLOG_ERR("eth dev rx queue setup error %d",diag);
427 diag = rte_eth_dev_start(dev->port_id);
429 VLOG_ERR("eth dev start error %d",diag);
433 rte_eth_promiscuous_enable(dev->port_id);
434 rte_eth_allmulticast_enable(dev->port_id);
436 memset(ð_addr, 0x0, sizeof(eth_addr));
437 rte_eth_macaddr_get(dev->port_id, ð_addr);
438 VLOG_INFO_RL(&rl, "Port %d: "ETH_ADDR_FMT"",
439 dev->port_id, ETH_ADDR_ARGS(eth_addr.addr_bytes));
441 memcpy(dev->hwaddr, eth_addr.addr_bytes, ETH_ADDR_LEN);
442 rte_eth_link_get_nowait(dev->port_id, &dev->link);
444 mbp_priv = rte_mempool_get_priv(dev->dpdk_mp->mp);
445 dev->buf_size = mbp_priv->mbuf_data_room_size - RTE_PKTMBUF_HEADROOM;
447 dev->flags = NETDEV_UP | NETDEV_PROMISC;
451 static struct netdev_dpdk *
452 netdev_dpdk_cast(const struct netdev *netdev)
454 return CONTAINER_OF(netdev, struct netdev_dpdk, up);
457 static struct netdev *
458 netdev_dpdk_alloc(void)
460 struct netdev_dpdk *netdev = dpdk_rte_mzalloc(sizeof *netdev);
465 netdev_dpdk_init(struct netdev *netdev_, unsigned int port_no) OVS_REQUIRES(dpdk_mutex)
467 struct netdev_dpdk *netdev = netdev_dpdk_cast(netdev_);
471 ovs_mutex_init(&netdev->mutex);
473 ovs_mutex_lock(&netdev->mutex);
475 for (i = 0; i < NR_QUEUE; i++) {
476 rte_spinlock_init(&netdev->tx_q[i].tx_lock);
479 netdev->port_id = port_no;
482 netdev->mtu = ETHER_MTU;
483 netdev->max_packet_len = MTU_TO_MAX_LEN(netdev->mtu);
485 /* XXX: need to discover device node at run time. */
486 netdev->socket_id = SOCKET0;
488 netdev->dpdk_mp = dpdk_mp_get(netdev->socket_id, netdev->mtu);
489 if (!netdev->dpdk_mp) {
494 err = dpdk_eth_dev_init(netdev);
498 netdev_->n_rxq = NR_QUEUE;
500 list_push_back(&dpdk_list, &netdev->list_node);
503 ovs_mutex_unlock(&netdev->mutex);
508 dpdk_dev_parse_name(const char dev_name[], const char prefix[],
509 unsigned int *port_no)
513 if (strncmp(dev_name, prefix, strlen(prefix))) {
517 cport = dev_name + strlen(prefix);
518 *port_no = strtol(cport, 0, 0); /* string must be null terminated */
523 netdev_dpdk_construct(struct netdev *netdev)
525 unsigned int port_no;
528 if (rte_eal_init_ret) {
529 return rte_eal_init_ret;
532 /* Names always start with "dpdk" */
533 err = dpdk_dev_parse_name(netdev->name, "dpdk", &port_no);
538 ovs_mutex_lock(&dpdk_mutex);
539 err = netdev_dpdk_init(netdev, port_no);
540 ovs_mutex_unlock(&dpdk_mutex);
545 netdev_dpdk_destruct(struct netdev *netdev_)
547 struct netdev_dpdk *dev = netdev_dpdk_cast(netdev_);
549 ovs_mutex_lock(&dev->mutex);
550 rte_eth_dev_stop(dev->port_id);
551 ovs_mutex_unlock(&dev->mutex);
553 ovs_mutex_lock(&dpdk_mutex);
554 list_remove(&dev->list_node);
555 dpdk_mp_put(dev->dpdk_mp);
556 ovs_mutex_unlock(&dpdk_mutex);
558 ovs_mutex_destroy(&dev->mutex);
562 netdev_dpdk_dealloc(struct netdev *netdev_)
564 struct netdev_dpdk *netdev = netdev_dpdk_cast(netdev_);
570 netdev_dpdk_get_config(const struct netdev *netdev_, struct smap *args)
572 struct netdev_dpdk *dev = netdev_dpdk_cast(netdev_);
574 ovs_mutex_lock(&dev->mutex);
576 /* XXX: Allow to configure number of queues. */
577 smap_add_format(args, "configured_rx_queues", "%u", netdev_->n_rxq);
578 smap_add_format(args, "configured_tx_queues", "%u", netdev_->n_rxq);
579 ovs_mutex_unlock(&dev->mutex);
584 static struct netdev_rxq *
585 netdev_dpdk_rxq_alloc(void)
587 struct netdev_rxq_dpdk *rx = dpdk_rte_mzalloc(sizeof *rx);
592 static struct netdev_rxq_dpdk *
593 netdev_rxq_dpdk_cast(const struct netdev_rxq *rx)
595 return CONTAINER_OF(rx, struct netdev_rxq_dpdk, up);
599 netdev_dpdk_rxq_construct(struct netdev_rxq *rxq_)
601 struct netdev_rxq_dpdk *rx = netdev_rxq_dpdk_cast(rxq_);
602 struct netdev_dpdk *netdev = netdev_dpdk_cast(rx->up.netdev);
604 ovs_mutex_lock(&netdev->mutex);
605 rx->port_id = netdev->port_id;
606 ovs_mutex_unlock(&netdev->mutex);
612 netdev_dpdk_rxq_destruct(struct netdev_rxq *rxq_ OVS_UNUSED)
617 netdev_dpdk_rxq_dealloc(struct netdev_rxq *rxq_)
619 struct netdev_rxq_dpdk *rx = netdev_rxq_dpdk_cast(rxq_);
625 dpdk_queue_flush__(struct netdev_dpdk *dev, int qid)
627 struct dpdk_tx_queue *txq = &dev->tx_q[qid];
630 while (nb_tx != txq->count) {
633 ret = rte_eth_tx_burst(dev->port_id, qid, txq->burst_pkts + nb_tx,
642 if (OVS_UNLIKELY(nb_tx != txq->count)) {
643 /* free buffers, which we couldn't transmit, one at a time (each
644 * packet could come from a different mempool) */
647 for (i = nb_tx; i < txq->count; i++) {
648 rte_pktmbuf_free_seg(txq->burst_pkts[i]);
650 ovs_mutex_lock(&dev->mutex);
651 dev->stats.tx_dropped += txq->count-nb_tx;
652 ovs_mutex_unlock(&dev->mutex);
656 txq->tsc = rte_get_timer_cycles();
660 dpdk_queue_flush(struct netdev_dpdk *dev, int qid)
662 struct dpdk_tx_queue *txq = &dev->tx_q[qid];
664 if (txq->count == 0) {
667 rte_spinlock_lock(&txq->tx_lock);
668 dpdk_queue_flush__(dev, qid);
669 rte_spinlock_unlock(&txq->tx_lock);
673 netdev_dpdk_rxq_recv(struct netdev_rxq *rxq_, struct dpif_packet **packets,
676 struct netdev_rxq_dpdk *rx = netdev_rxq_dpdk_cast(rxq_);
677 struct netdev *netdev = rx->up.netdev;
678 struct netdev_dpdk *dev = netdev_dpdk_cast(netdev);
681 dpdk_queue_flush(dev, rxq_->queue_id);
683 nb_rx = rte_eth_rx_burst(rx->port_id, rxq_->queue_id,
684 (struct rte_mbuf **) packets,
685 MIN((int)NETDEV_MAX_RX_BATCH,
686 (int)MAX_RX_QUEUE_LEN));
697 dpdk_queue_pkts(struct netdev_dpdk *dev, int qid,
698 struct rte_mbuf **pkts, int cnt)
700 struct dpdk_tx_queue *txq = &dev->tx_q[qid];
705 rte_spinlock_lock(&txq->tx_lock);
707 int freeslots = MAX_TX_QUEUE_LEN - txq->count;
708 int tocopy = MIN(freeslots, cnt-i);
710 memcpy(&txq->burst_pkts[txq->count], &pkts[i],
711 tocopy * sizeof (struct rte_mbuf *));
713 txq->count += tocopy;
716 if (txq->count == MAX_TX_QUEUE_LEN) {
717 dpdk_queue_flush__(dev, qid);
719 diff_tsc = rte_get_timer_cycles() - txq->tsc;
720 if (diff_tsc >= DRAIN_TSC) {
721 dpdk_queue_flush__(dev, qid);
724 rte_spinlock_unlock(&txq->tx_lock);
727 /* Tx function. Transmit packets indefinitely */
729 dpdk_do_tx_copy(struct netdev *netdev, struct dpif_packet ** pkts, int cnt)
730 OVS_NO_THREAD_SAFETY_ANALYSIS
732 struct netdev_dpdk *dev = netdev_dpdk_cast(netdev);
733 struct rte_mbuf *mbufs[cnt];
738 /* If we are on a non pmd thread we have to use the mempool mutex, because
739 * every non pmd thread shares the same mempool cache */
741 if (!thread_is_pmd()) {
742 ovs_mutex_lock(&nonpmd_mempool_mutex);
745 for (i = 0; i < cnt; i++) {
746 int size = ofpbuf_size(&pkts[i]->ofpbuf);
748 if (OVS_UNLIKELY(size > dev->max_packet_len)) {
749 VLOG_WARN_RL(&rl, "Too big size %d max_packet_len %d",
750 (int)size , dev->max_packet_len);
756 mbufs[newcnt] = rte_pktmbuf_alloc(dev->dpdk_mp->mp);
758 if (!mbufs[newcnt]) {
763 /* We have to do a copy for now */
764 memcpy(mbufs[newcnt]->pkt.data, ofpbuf_data(&pkts[i]->ofpbuf), size);
766 rte_pktmbuf_data_len(mbufs[newcnt]) = size;
767 rte_pktmbuf_pkt_len(mbufs[newcnt]) = size;
772 if (OVS_UNLIKELY(dropped)) {
773 ovs_mutex_lock(&dev->mutex);
774 dev->stats.tx_dropped += dropped;
775 ovs_mutex_unlock(&dev->mutex);
778 dpdk_queue_pkts(dev, NON_PMD_THREAD_TX_QUEUE, mbufs, newcnt);
779 dpdk_queue_flush(dev, NON_PMD_THREAD_TX_QUEUE);
781 if (!thread_is_pmd()) {
782 ovs_mutex_unlock(&nonpmd_mempool_mutex);
787 netdev_dpdk_send(struct netdev *netdev, struct dpif_packet **pkts, int cnt,
790 struct netdev_dpdk *dev = netdev_dpdk_cast(netdev);
794 if (!may_steal || pkts[0]->ofpbuf.source != OFPBUF_DPDK) {
795 dpdk_do_tx_copy(netdev, pkts, cnt);
798 for (i = 0; i < cnt; i++) {
799 dpif_packet_delete(pkts[i]);
807 qid = rte_lcore_id() % NR_QUEUE;
809 for (i = 0; i < cnt; i++) {
810 int size = ofpbuf_size(&pkts[i]->ofpbuf);
811 if (OVS_UNLIKELY(size > dev->max_packet_len)) {
812 if (next_tx_idx != i) {
813 dpdk_queue_pkts(dev, qid,
814 (struct rte_mbuf **)&pkts[next_tx_idx],
818 VLOG_WARN_RL(&rl, "Too big size %d max_packet_len %d",
819 (int)size , dev->max_packet_len);
821 dpif_packet_delete(pkts[i]);
826 if (next_tx_idx != cnt) {
827 dpdk_queue_pkts(dev, qid,
828 (struct rte_mbuf **)&pkts[next_tx_idx],
832 if (OVS_UNLIKELY(dropped)) {
833 ovs_mutex_lock(&dev->mutex);
834 dev->stats.tx_dropped += dropped;
835 ovs_mutex_unlock(&dev->mutex);
844 netdev_dpdk_set_etheraddr(struct netdev *netdev,
845 const uint8_t mac[ETH_ADDR_LEN])
847 struct netdev_dpdk *dev = netdev_dpdk_cast(netdev);
849 ovs_mutex_lock(&dev->mutex);
850 if (!eth_addr_equals(dev->hwaddr, mac)) {
851 memcpy(dev->hwaddr, mac, ETH_ADDR_LEN);
852 netdev_change_seq_changed(netdev);
854 ovs_mutex_unlock(&dev->mutex);
860 netdev_dpdk_get_etheraddr(const struct netdev *netdev,
861 uint8_t mac[ETH_ADDR_LEN])
863 struct netdev_dpdk *dev = netdev_dpdk_cast(netdev);
865 ovs_mutex_lock(&dev->mutex);
866 memcpy(mac, dev->hwaddr, ETH_ADDR_LEN);
867 ovs_mutex_unlock(&dev->mutex);
873 netdev_dpdk_get_mtu(const struct netdev *netdev, int *mtup)
875 struct netdev_dpdk *dev = netdev_dpdk_cast(netdev);
877 ovs_mutex_lock(&dev->mutex);
879 ovs_mutex_unlock(&dev->mutex);
885 netdev_dpdk_set_mtu(const struct netdev *netdev, int mtu)
887 struct netdev_dpdk *dev = netdev_dpdk_cast(netdev);
889 struct dpdk_mp *old_mp;
892 ovs_mutex_lock(&dpdk_mutex);
893 ovs_mutex_lock(&dev->mutex);
894 if (dev->mtu == mtu) {
899 mp = dpdk_mp_get(dev->socket_id, dev->mtu);
905 rte_eth_dev_stop(dev->port_id);
908 old_mp = dev->dpdk_mp;
911 dev->max_packet_len = MTU_TO_MAX_LEN(dev->mtu);
913 err = dpdk_eth_dev_init(dev);
917 dev->dpdk_mp = old_mp;
918 dev->max_packet_len = MTU_TO_MAX_LEN(dev->mtu);
919 dpdk_eth_dev_init(dev);
924 netdev_change_seq_changed(netdev);
926 ovs_mutex_unlock(&dev->mutex);
927 ovs_mutex_unlock(&dpdk_mutex);
932 netdev_dpdk_get_carrier(const struct netdev *netdev_, bool *carrier);
935 netdev_dpdk_get_stats(const struct netdev *netdev, struct netdev_stats *stats)
937 struct netdev_dpdk *dev = netdev_dpdk_cast(netdev);
938 struct rte_eth_stats rte_stats;
941 netdev_dpdk_get_carrier(netdev, &gg);
942 ovs_mutex_lock(&dev->mutex);
943 rte_eth_stats_get(dev->port_id, &rte_stats);
945 *stats = dev->stats_offset;
947 stats->rx_packets += rte_stats.ipackets;
948 stats->tx_packets += rte_stats.opackets;
949 stats->rx_bytes += rte_stats.ibytes;
950 stats->tx_bytes += rte_stats.obytes;
951 stats->rx_errors += rte_stats.ierrors;
952 stats->tx_errors += rte_stats.oerrors;
953 stats->multicast += rte_stats.imcasts;
955 stats->tx_dropped += dev->stats.tx_dropped;
956 ovs_mutex_unlock(&dev->mutex);
962 netdev_dpdk_set_stats(struct netdev *netdev, const struct netdev_stats *stats)
964 struct netdev_dpdk *dev = netdev_dpdk_cast(netdev);
966 ovs_mutex_lock(&dev->mutex);
967 dev->stats_offset = *stats;
968 ovs_mutex_unlock(&dev->mutex);
974 netdev_dpdk_get_features(const struct netdev *netdev_,
975 enum netdev_features *current,
976 enum netdev_features *advertised OVS_UNUSED,
977 enum netdev_features *supported OVS_UNUSED,
978 enum netdev_features *peer OVS_UNUSED)
980 struct netdev_dpdk *dev = netdev_dpdk_cast(netdev_);
981 struct rte_eth_link link;
983 ovs_mutex_lock(&dev->mutex);
985 ovs_mutex_unlock(&dev->mutex);
987 if (link.link_duplex == ETH_LINK_AUTONEG_DUPLEX) {
988 if (link.link_speed == ETH_LINK_SPEED_AUTONEG) {
989 *current = NETDEV_F_AUTONEG;
991 } else if (link.link_duplex == ETH_LINK_HALF_DUPLEX) {
992 if (link.link_speed == ETH_LINK_SPEED_10) {
993 *current = NETDEV_F_10MB_HD;
995 if (link.link_speed == ETH_LINK_SPEED_100) {
996 *current = NETDEV_F_100MB_HD;
998 if (link.link_speed == ETH_LINK_SPEED_1000) {
999 *current = NETDEV_F_1GB_HD;
1001 } else if (link.link_duplex == ETH_LINK_FULL_DUPLEX) {
1002 if (link.link_speed == ETH_LINK_SPEED_10) {
1003 *current = NETDEV_F_10MB_FD;
1005 if (link.link_speed == ETH_LINK_SPEED_100) {
1006 *current = NETDEV_F_100MB_FD;
1008 if (link.link_speed == ETH_LINK_SPEED_1000) {
1009 *current = NETDEV_F_1GB_FD;
1011 if (link.link_speed == ETH_LINK_SPEED_10000) {
1012 *current = NETDEV_F_10GB_FD;
1020 netdev_dpdk_get_ifindex(const struct netdev *netdev)
1022 struct netdev_dpdk *dev = netdev_dpdk_cast(netdev);
1025 ovs_mutex_lock(&dev->mutex);
1026 ifindex = dev->port_id;
1027 ovs_mutex_unlock(&dev->mutex);
1033 netdev_dpdk_get_carrier(const struct netdev *netdev_, bool *carrier)
1035 struct netdev_dpdk *dev = netdev_dpdk_cast(netdev_);
1037 ovs_mutex_lock(&dev->mutex);
1038 check_link_status(dev);
1039 *carrier = dev->link.link_status;
1040 ovs_mutex_unlock(&dev->mutex);
1045 static long long int
1046 netdev_dpdk_get_carrier_resets(const struct netdev *netdev_)
1048 struct netdev_dpdk *dev = netdev_dpdk_cast(netdev_);
1049 long long int carrier_resets;
1051 ovs_mutex_lock(&dev->mutex);
1052 carrier_resets = dev->link_reset_cnt;
1053 ovs_mutex_unlock(&dev->mutex);
1055 return carrier_resets;
1059 netdev_dpdk_set_miimon(struct netdev *netdev_ OVS_UNUSED,
1060 long long int interval OVS_UNUSED)
1066 netdev_dpdk_update_flags__(struct netdev_dpdk *dev,
1067 enum netdev_flags off, enum netdev_flags on,
1068 enum netdev_flags *old_flagsp) OVS_REQUIRES(dev->mutex)
1072 if ((off | on) & ~(NETDEV_UP | NETDEV_PROMISC)) {
1076 *old_flagsp = dev->flags;
1080 if (dev->flags == *old_flagsp) {
1084 if (dev->flags & NETDEV_UP) {
1085 err = rte_eth_dev_start(dev->port_id);
1090 if (dev->flags & NETDEV_PROMISC) {
1091 rte_eth_promiscuous_enable(dev->port_id);
1094 if (!(dev->flags & NETDEV_UP)) {
1095 rte_eth_dev_stop(dev->port_id);
1102 netdev_dpdk_update_flags(struct netdev *netdev_,
1103 enum netdev_flags off, enum netdev_flags on,
1104 enum netdev_flags *old_flagsp)
1106 struct netdev_dpdk *netdev = netdev_dpdk_cast(netdev_);
1109 ovs_mutex_lock(&netdev->mutex);
1110 error = netdev_dpdk_update_flags__(netdev, off, on, old_flagsp);
1111 ovs_mutex_unlock(&netdev->mutex);
1117 netdev_dpdk_get_status(const struct netdev *netdev_, struct smap *args)
1119 struct netdev_dpdk *dev = netdev_dpdk_cast(netdev_);
1120 struct rte_eth_dev_info dev_info;
1122 if (dev->port_id <= 0)
1125 ovs_mutex_lock(&dev->mutex);
1126 rte_eth_dev_info_get(dev->port_id, &dev_info);
1127 ovs_mutex_unlock(&dev->mutex);
1129 smap_add_format(args, "driver_name", "%s", dev_info.driver_name);
1131 smap_add_format(args, "port_no", "%d", dev->port_id);
1132 smap_add_format(args, "numa_id", "%d", rte_eth_dev_socket_id(dev->port_id));
1133 smap_add_format(args, "driver_name", "%s", dev_info.driver_name);
1134 smap_add_format(args, "min_rx_bufsize", "%u", dev_info.min_rx_bufsize);
1135 smap_add_format(args, "max_rx_pktlen", "%u", dev_info.max_rx_pktlen);
1136 smap_add_format(args, "max_rx_queues", "%u", dev_info.max_rx_queues);
1137 smap_add_format(args, "max_tx_queues", "%u", dev_info.max_tx_queues);
1138 smap_add_format(args, "max_mac_addrs", "%u", dev_info.max_mac_addrs);
1139 smap_add_format(args, "max_hash_mac_addrs", "%u", dev_info.max_hash_mac_addrs);
1140 smap_add_format(args, "max_vfs", "%u", dev_info.max_vfs);
1141 smap_add_format(args, "max_vmdq_pools", "%u", dev_info.max_vmdq_pools);
1143 smap_add_format(args, "pci-vendor_id", "0x%u", dev_info.pci_dev->id.vendor_id);
1144 smap_add_format(args, "pci-device_id", "0x%x", dev_info.pci_dev->id.device_id);
1150 netdev_dpdk_set_admin_state__(struct netdev_dpdk *dev, bool admin_state)
1151 OVS_REQUIRES(dev->mutex)
1153 enum netdev_flags old_flags;
1156 netdev_dpdk_update_flags__(dev, 0, NETDEV_UP, &old_flags);
1158 netdev_dpdk_update_flags__(dev, NETDEV_UP, 0, &old_flags);
1163 netdev_dpdk_set_admin_state(struct unixctl_conn *conn, int argc,
1164 const char *argv[], void *aux OVS_UNUSED)
1168 if (!strcasecmp(argv[argc - 1], "up")) {
1170 } else if ( !strcasecmp(argv[argc - 1], "down")) {
1173 unixctl_command_reply_error(conn, "Invalid Admin State");
1178 struct netdev *netdev = netdev_from_name(argv[1]);
1179 if (netdev && is_dpdk_class(netdev->netdev_class)) {
1180 struct netdev_dpdk *dpdk_dev = netdev_dpdk_cast(netdev);
1182 ovs_mutex_lock(&dpdk_dev->mutex);
1183 netdev_dpdk_set_admin_state__(dpdk_dev, up);
1184 ovs_mutex_unlock(&dpdk_dev->mutex);
1186 netdev_close(netdev);
1188 unixctl_command_reply_error(conn, "Not a DPDK Interface");
1189 netdev_close(netdev);
1193 struct netdev_dpdk *netdev;
1195 ovs_mutex_lock(&dpdk_mutex);
1196 LIST_FOR_EACH (netdev, list_node, &dpdk_list) {
1197 ovs_mutex_lock(&netdev->mutex);
1198 netdev_dpdk_set_admin_state__(netdev, up);
1199 ovs_mutex_unlock(&netdev->mutex);
1201 ovs_mutex_unlock(&dpdk_mutex);
1203 unixctl_command_reply(conn, "OK");
1207 dpdk_common_init(void)
1209 unixctl_command_register("netdev-dpdk/set-admin-state",
1210 "[netdev] up|down", 1, 2,
1211 netdev_dpdk_set_admin_state, NULL);
1213 ovs_thread_create("dpdk_watchdog", dpdk_watchdog, NULL);
1217 dpdk_class_init(void)
1221 result = rte_eal_pci_probe();
1223 VLOG_ERR("Cannot probe PCI");
1227 VLOG_INFO("Ethernet Device Count: %d", (int)rte_eth_dev_count());
1235 dpdk_ring_create(const char dev_name[], unsigned int port_no,
1236 unsigned int *eth_port_id)
1238 struct dpdk_ring *ivshmem;
1242 ivshmem = dpdk_rte_mzalloc(sizeof *ivshmem);
1243 if (ivshmem == NULL) {
1247 err = snprintf(ring_name, 10, "%s_tx", dev_name);
1252 ivshmem->cring_tx = rte_ring_create(ring_name, DPDK_RING_SIZE, SOCKET0, 0);
1253 if (ivshmem->cring_tx == NULL) {
1258 err = snprintf(ring_name, 10, "%s_rx", dev_name);
1263 ivshmem->cring_rx = rte_ring_create(ring_name, DPDK_RING_SIZE, SOCKET0, 0);
1264 if (ivshmem->cring_rx == NULL) {
1269 err = rte_eth_from_rings(dev_name, &ivshmem->cring_rx, 1,
1270 &ivshmem->cring_tx, 1, SOCKET0);
1277 ivshmem->user_port_id = port_no;
1278 ivshmem->eth_port_id = rte_eth_dev_count() - 1;
1279 list_push_back(&dpdk_ring_list, &ivshmem->list_node);
1281 *eth_port_id = ivshmem->eth_port_id;
1286 dpdk_ring_open(const char dev_name[], unsigned int *eth_port_id) OVS_REQUIRES(dpdk_mutex)
1288 struct dpdk_ring *ivshmem;
1289 unsigned int port_no;
1292 /* Names always start with "dpdkr" */
1293 err = dpdk_dev_parse_name(dev_name, "dpdkr", &port_no);
1298 /* look through our list to find the device */
1299 LIST_FOR_EACH (ivshmem, list_node, &dpdk_ring_list) {
1300 if (ivshmem->user_port_id == port_no) {
1301 VLOG_INFO("Found dpdk ring device %s:\n", dev_name);
1302 *eth_port_id = ivshmem->eth_port_id; /* really all that is needed */
1306 /* Need to create the device rings */
1307 return dpdk_ring_create(dev_name, port_no, eth_port_id);
1311 netdev_dpdk_ring_construct(struct netdev *netdev)
1313 unsigned int port_no = 0;
1316 if (rte_eal_init_ret) {
1317 return rte_eal_init_ret;
1320 ovs_mutex_lock(&dpdk_mutex);
1322 err = dpdk_ring_open(netdev->name, &port_no);
1327 err = netdev_dpdk_init(netdev, port_no);
1330 ovs_mutex_unlock(&dpdk_mutex);
1334 #define NETDEV_DPDK_CLASS(NAME, INIT, CONSTRUCT) \
1338 NULL, /* netdev_dpdk_run */ \
1339 NULL, /* netdev_dpdk_wait */ \
1341 netdev_dpdk_alloc, \
1343 netdev_dpdk_destruct, \
1344 netdev_dpdk_dealloc, \
1345 netdev_dpdk_get_config, \
1346 NULL, /* netdev_dpdk_set_config */ \
1347 NULL, /* get_tunnel_config */ \
1349 netdev_dpdk_send, /* send */ \
1350 NULL, /* send_wait */ \
1352 netdev_dpdk_set_etheraddr, \
1353 netdev_dpdk_get_etheraddr, \
1354 netdev_dpdk_get_mtu, \
1355 netdev_dpdk_set_mtu, \
1356 netdev_dpdk_get_ifindex, \
1357 netdev_dpdk_get_carrier, \
1358 netdev_dpdk_get_carrier_resets, \
1359 netdev_dpdk_set_miimon, \
1360 netdev_dpdk_get_stats, \
1361 netdev_dpdk_set_stats, \
1362 netdev_dpdk_get_features, \
1363 NULL, /* set_advertisements */ \
1365 NULL, /* set_policing */ \
1366 NULL, /* get_qos_types */ \
1367 NULL, /* get_qos_capabilities */ \
1368 NULL, /* get_qos */ \
1369 NULL, /* set_qos */ \
1370 NULL, /* get_queue */ \
1371 NULL, /* set_queue */ \
1372 NULL, /* delete_queue */ \
1373 NULL, /* get_queue_stats */ \
1374 NULL, /* queue_dump_start */ \
1375 NULL, /* queue_dump_next */ \
1376 NULL, /* queue_dump_done */ \
1377 NULL, /* dump_queue_stats */ \
1379 NULL, /* get_in4 */ \
1380 NULL, /* set_in4 */ \
1381 NULL, /* get_in6 */ \
1382 NULL, /* add_router */ \
1383 NULL, /* get_next_hop */ \
1384 netdev_dpdk_get_status, \
1385 NULL, /* arp_lookup */ \
1387 netdev_dpdk_update_flags, \
1389 netdev_dpdk_rxq_alloc, \
1390 netdev_dpdk_rxq_construct, \
1391 netdev_dpdk_rxq_destruct, \
1392 netdev_dpdk_rxq_dealloc, \
1393 netdev_dpdk_rxq_recv, \
1394 NULL, /* rx_wait */ \
1395 NULL, /* rxq_drain */ \
1399 dpdk_init(int argc, char **argv)
1403 if (argc < 2 || strcmp(argv[1], "--dpdk"))
1406 /* Make sure program name passed to rte_eal_init() is vswitchd. */
1412 /* Make sure things are initialized ... */
1413 result = rte_eal_init(argc, argv);
1415 ovs_abort(result, "Cannot init EAL\n");
1418 rte_memzone_dump(stdout);
1419 rte_eal_init_ret = 0;
1421 if (argc > result) {
1422 argv[result] = argv[0];
1425 /* We are called from the main thread here */
1426 thread_set_nonpmd();
1431 const struct netdev_class dpdk_class =
1435 netdev_dpdk_construct);
1437 const struct netdev_class dpdk_ring_class =
1441 netdev_dpdk_ring_construct);
1444 netdev_dpdk_register(void)
1446 static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER;
1448 if (rte_eal_init_ret) {
1452 if (ovsthread_once_start(&once)) {
1454 netdev_register_provider(&dpdk_class);
1455 netdev_register_provider(&dpdk_ring_class);
1456 ovsthread_once_done(&once);
1461 pmd_thread_setaffinity_cpu(int cpu)
1467 CPU_SET(cpu, &cpuset);
1468 err = pthread_setaffinity_np(pthread_self(), sizeof(cpu_set_t), &cpuset);
1470 VLOG_ERR("Thread affinity error %d",err);
1473 /* lcore_id 0 is reseved for use by non pmd threads. */
1474 RTE_PER_LCORE(_lcore_id) = cpu + 1;
1480 thread_set_nonpmd(void)
1482 /* We cannot have RTE_MAX_LCORE pmd threads, because lcore_id 0 is reserved
1483 * for non pmd threads */
1484 BUILD_ASSERT(NR_PMD_THREADS < RTE_MAX_LCORE);
1485 /* We have to use 0 to allow non pmd threads to perform certain DPDK
1486 * operations, like rte_eth_dev_configure(). */
1487 RTE_PER_LCORE(_lcore_id) = 0;
1493 return rte_lcore_id() != 0;