2 * Copyright (c) 2014, 2015, 2016 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.
30 #include <sys/types.h>
34 #include "dp-packet.h"
35 #include "dpif-netdev.h"
37 #include "netdev-dpdk.h"
38 #include "netdev-provider.h"
39 #include "netdev-vport.h"
41 #include "ofp-print.h"
43 #include "ovs-thread.h"
48 #include "unaligned.h"
51 #include "openvswitch/vlog.h"
53 #include "rte_config.h"
55 #include "rte_virtio_net.h"
57 VLOG_DEFINE_THIS_MODULE(dpdk
);
58 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(5, 20);
60 #define DPDK_PORT_WATCHDOG_INTERVAL 5
62 #define OVS_CACHE_LINE_SIZE CACHE_LINE_SIZE
63 #define OVS_VPORT_DPDK "ovs_dpdk"
66 * need to reserve tons of extra space in the mbufs so we can align the
67 * DMA addresses to 4KB.
68 * The minimum mbuf size is limited to avoid scatter behaviour and drop in
69 * performance for standard Ethernet MTU.
71 #define MTU_TO_MAX_LEN(mtu) ((mtu) + ETHER_HDR_LEN + ETHER_CRC_LEN)
72 #define MBUF_SIZE_MTU(mtu) (MTU_TO_MAX_LEN(mtu) \
73 + sizeof(struct dp_packet) \
74 + RTE_PKTMBUF_HEADROOM)
75 #define MBUF_SIZE_DRIVER (2048 \
76 + sizeof (struct rte_mbuf) \
77 + RTE_PKTMBUF_HEADROOM)
78 #define MBUF_SIZE(mtu) MAX(MBUF_SIZE_MTU(mtu), MBUF_SIZE_DRIVER)
80 /* Max and min number of packets in the mempool. OVS tries to allocate a
81 * mempool with MAX_NB_MBUF: if this fails (because the system doesn't have
82 * enough hugepages) we keep halving the number until the allocation succeeds
83 * or we reach MIN_NB_MBUF */
85 #define MAX_NB_MBUF (4096 * 64)
86 #define MIN_NB_MBUF (4096 * 4)
87 #define MP_CACHE_SZ RTE_MEMPOOL_CACHE_MAX_SIZE
89 /* MAX_NB_MBUF can be divided by 2 many times, until MIN_NB_MBUF */
90 BUILD_ASSERT_DECL(MAX_NB_MBUF
% ROUND_DOWN_POW2(MAX_NB_MBUF
/MIN_NB_MBUF
) == 0);
92 /* The smallest possible NB_MBUF that we're going to try should be a multiple
93 * of MP_CACHE_SZ. This is advised by DPDK documentation. */
94 BUILD_ASSERT_DECL((MAX_NB_MBUF
/ ROUND_DOWN_POW2(MAX_NB_MBUF
/MIN_NB_MBUF
))
99 #define NIC_PORT_RX_Q_SIZE 2048 /* Size of Physical NIC RX Queue, Max (n+32<=4096)*/
100 #define NIC_PORT_TX_Q_SIZE 2048 /* Size of Physical NIC TX Queue, Max (n+32<=4096)*/
102 static char *cuse_dev_name
= NULL
; /* Character device cuse_dev_name. */
103 static char *vhost_sock_dir
= NULL
; /* Location of vhost-user sockets */
106 * Maximum amount of time in micro seconds to try and enqueue to vhost.
108 #define VHOST_ENQ_RETRY_USECS 100
110 static const struct rte_eth_conf port_conf
= {
112 .mq_mode
= ETH_MQ_RX_RSS
,
114 .header_split
= 0, /* Header Split disabled */
115 .hw_ip_checksum
= 0, /* IP checksum offload disabled */
116 .hw_vlan_filter
= 0, /* VLAN filtering disabled */
117 .jumbo_frame
= 0, /* Jumbo Frame Support disabled */
123 .rss_hf
= ETH_RSS_IP
| ETH_RSS_UDP
| ETH_RSS_TCP
,
127 .mq_mode
= ETH_MQ_TX_NONE
,
131 enum { MAX_TX_QUEUE_LEN
= 384 };
132 enum { DPDK_RING_SIZE
= 256 };
133 BUILD_ASSERT_DECL(IS_POW2(DPDK_RING_SIZE
));
134 enum { DRAIN_TSC
= 200000ULL };
141 static int rte_eal_init_ret
= ENODEV
;
143 static struct ovs_mutex dpdk_mutex
= OVS_MUTEX_INITIALIZER
;
145 /* Contains all 'struct dpdk_dev's. */
146 static struct ovs_list dpdk_list
OVS_GUARDED_BY(dpdk_mutex
)
147 = OVS_LIST_INITIALIZER(&dpdk_list
);
149 static struct ovs_list dpdk_mp_list
OVS_GUARDED_BY(dpdk_mutex
)
150 = OVS_LIST_INITIALIZER(&dpdk_mp_list
);
152 /* This mutex must be used by non pmd threads when allocating or freeing
153 * mbufs through mempools. Since dpdk_queue_pkts() and dpdk_queue_flush() may
154 * use mempools, a non pmd thread should hold this mutex while calling them */
155 static struct ovs_mutex nonpmd_mempool_mutex
= OVS_MUTEX_INITIALIZER
;
158 struct rte_mempool
*mp
;
162 struct ovs_list list_node
OVS_GUARDED_BY(dpdk_mutex
);
165 /* There should be one 'struct dpdk_tx_queue' created for
167 struct dpdk_tx_queue
{
168 bool flush_tx
; /* Set to true to flush queue everytime */
169 /* pkts are queued. */
171 rte_spinlock_t tx_lock
; /* Protects the members and the NIC queue
172 * from concurrent access. It is used only
173 * if the queue is shared among different
174 * pmd threads (see 'txq_needs_locking'). */
176 struct rte_mbuf
*burst_pkts
[MAX_TX_QUEUE_LEN
];
179 /* dpdk has no way to remove dpdk ring ethernet devices
180 so we have to keep them around once they've been created
183 static struct ovs_list dpdk_ring_list
OVS_GUARDED_BY(dpdk_mutex
)
184 = OVS_LIST_INITIALIZER(&dpdk_ring_list
);
187 /* For the client rings */
188 struct rte_ring
*cring_tx
;
189 struct rte_ring
*cring_rx
;
190 int user_port_id
; /* User given port no, parsed from port name */
191 int eth_port_id
; /* ethernet device port id */
192 struct ovs_list list_node
OVS_GUARDED_BY(dpdk_mutex
);
199 enum dpdk_dev_type type
;
201 struct dpdk_tx_queue
*tx_q
;
203 struct ovs_mutex mutex
OVS_ACQ_AFTER(dpdk_mutex
);
205 struct dpdk_mp
*dpdk_mp
;
209 struct netdev_stats stats
;
211 rte_spinlock_t stats_lock
;
213 struct eth_addr hwaddr
;
214 enum netdev_flags flags
;
216 struct rte_eth_link link
;
219 /* The user might request more txqs than the NIC has. We remap those
220 * ('up.n_txq') on these ('real_n_txq').
221 * If the numbers match, 'txq_needs_locking' is false, otherwise it is
222 * true and we will take a spinlock on transmission */
225 bool txq_needs_locking
;
227 /* virtio-net structure for vhost device */
228 OVSRCU_TYPE(struct virtio_net
*) virtio_dev
;
230 /* Identifier used to distinguish vhost devices from each other */
231 char vhost_id
[PATH_MAX
];
234 struct ovs_list list_node
OVS_GUARDED_BY(dpdk_mutex
);
237 struct netdev_rxq_dpdk
{
238 struct netdev_rxq up
;
242 static bool dpdk_thread_is_pmd(void);
244 static int netdev_dpdk_construct(struct netdev
*);
246 struct virtio_net
* netdev_dpdk_get_virtio(const struct netdev_dpdk
*dev
);
249 is_dpdk_class(const struct netdev_class
*class)
251 return class->construct
== netdev_dpdk_construct
;
254 /* XXX: use dpdk malloc for entire OVS. in fact huge page should be used
255 * for all other segments data, bss and text. */
258 dpdk_rte_mzalloc(size_t sz
)
262 ptr
= rte_zmalloc(OVS_VPORT_DPDK
, sz
, OVS_CACHE_LINE_SIZE
);
269 /* XXX this function should be called only by pmd threads (or by non pmd
270 * threads holding the nonpmd_mempool_mutex) */
272 free_dpdk_buf(struct dp_packet
*p
)
274 struct rte_mbuf
*pkt
= (struct rte_mbuf
*) p
;
276 rte_pktmbuf_free_seg(pkt
);
280 __rte_pktmbuf_init(struct rte_mempool
*mp
,
281 void *opaque_arg OVS_UNUSED
,
283 unsigned i OVS_UNUSED
)
285 struct rte_mbuf
*m
= _m
;
286 uint32_t buf_len
= mp
->elt_size
- sizeof(struct dp_packet
);
288 RTE_MBUF_ASSERT(mp
->elt_size
>= sizeof(struct dp_packet
));
290 memset(m
, 0, mp
->elt_size
);
292 /* start of buffer is just after mbuf structure */
293 m
->buf_addr
= (char *)m
+ sizeof(struct dp_packet
);
294 m
->buf_physaddr
= rte_mempool_virt2phy(mp
, m
) +
295 sizeof(struct dp_packet
);
296 m
->buf_len
= (uint16_t)buf_len
;
298 /* keep some headroom between start of buffer and data */
299 m
->data_off
= RTE_MIN(RTE_PKTMBUF_HEADROOM
, m
->buf_len
);
301 /* init some constant fields */
308 ovs_rte_pktmbuf_init(struct rte_mempool
*mp
,
309 void *opaque_arg OVS_UNUSED
,
311 unsigned i OVS_UNUSED
)
313 struct rte_mbuf
*m
= _m
;
315 __rte_pktmbuf_init(mp
, opaque_arg
, _m
, i
);
317 dp_packet_init_dpdk((struct dp_packet
*) m
, m
->buf_len
);
320 static struct dpdk_mp
*
321 dpdk_mp_get(int socket_id
, int mtu
) OVS_REQUIRES(dpdk_mutex
)
323 struct dpdk_mp
*dmp
= NULL
;
324 char mp_name
[RTE_MEMPOOL_NAMESIZE
];
327 LIST_FOR_EACH (dmp
, list_node
, &dpdk_mp_list
) {
328 if (dmp
->socket_id
== socket_id
&& dmp
->mtu
== mtu
) {
334 dmp
= dpdk_rte_mzalloc(sizeof *dmp
);
335 dmp
->socket_id
= socket_id
;
339 mp_size
= MAX_NB_MBUF
;
341 if (snprintf(mp_name
, RTE_MEMPOOL_NAMESIZE
, "ovs_mp_%d_%d_%u",
342 dmp
->mtu
, dmp
->socket_id
, mp_size
) < 0) {
346 dmp
->mp
= rte_mempool_create(mp_name
, mp_size
, MBUF_SIZE(mtu
),
348 sizeof(struct rte_pktmbuf_pool_private
),
349 rte_pktmbuf_pool_init
, NULL
,
350 ovs_rte_pktmbuf_init
, NULL
,
352 } while (!dmp
->mp
&& rte_errno
== ENOMEM
&& (mp_size
/= 2) >= MIN_NB_MBUF
);
354 if (dmp
->mp
== NULL
) {
357 VLOG_DBG("Allocated \"%s\" mempool with %u mbufs", mp_name
, mp_size
);
360 list_push_back(&dpdk_mp_list
, &dmp
->list_node
);
365 dpdk_mp_put(struct dpdk_mp
*dmp
)
373 ovs_assert(dmp
->refcount
>= 0);
376 /* I could not find any API to destroy mp. */
377 if (dmp
->refcount
== 0) {
378 list_delete(dmp
->list_node
);
379 /* destroy mp-pool. */
385 check_link_status(struct netdev_dpdk
*dev
)
387 struct rte_eth_link link
;
389 rte_eth_link_get_nowait(dev
->port_id
, &link
);
391 if (dev
->link
.link_status
!= link
.link_status
) {
392 netdev_change_seq_changed(&dev
->up
);
394 dev
->link_reset_cnt
++;
396 if (dev
->link
.link_status
) {
397 VLOG_DBG_RL(&rl
, "Port %d Link Up - speed %u Mbps - %s",
398 dev
->port_id
, (unsigned)dev
->link
.link_speed
,
399 (dev
->link
.link_duplex
== ETH_LINK_FULL_DUPLEX
) ?
400 ("full-duplex") : ("half-duplex"));
402 VLOG_DBG_RL(&rl
, "Port %d Link Down", dev
->port_id
);
408 dpdk_watchdog(void *dummy OVS_UNUSED
)
410 struct netdev_dpdk
*dev
;
412 pthread_detach(pthread_self());
415 ovs_mutex_lock(&dpdk_mutex
);
416 LIST_FOR_EACH (dev
, list_node
, &dpdk_list
) {
417 ovs_mutex_lock(&dev
->mutex
);
418 check_link_status(dev
);
419 ovs_mutex_unlock(&dev
->mutex
);
421 ovs_mutex_unlock(&dpdk_mutex
);
422 xsleep(DPDK_PORT_WATCHDOG_INTERVAL
);
429 dpdk_eth_dev_queue_setup(struct netdev_dpdk
*dev
, int n_rxq
, int n_txq
)
434 /* A device may report more queues than it makes available (this has
435 * been observed for Intel xl710, which reserves some of them for
436 * SRIOV): rte_eth_*_queue_setup will fail if a queue is not
437 * available. When this happens we can retry the configuration
438 * and request less queues */
439 while (n_rxq
&& n_txq
) {
441 VLOG_INFO("Retrying setup with (rxq:%d txq:%d)", n_rxq
, n_txq
);
444 diag
= rte_eth_dev_configure(dev
->port_id
, n_rxq
, n_txq
, &port_conf
);
449 for (i
= 0; i
< n_txq
; i
++) {
450 diag
= rte_eth_tx_queue_setup(dev
->port_id
, i
, NIC_PORT_TX_Q_SIZE
,
451 dev
->socket_id
, NULL
);
453 VLOG_INFO("Interface %s txq(%d) setup error: %s",
454 dev
->up
.name
, i
, rte_strerror(-diag
));
460 /* Retry with less tx queues */
465 for (i
= 0; i
< n_rxq
; i
++) {
466 diag
= rte_eth_rx_queue_setup(dev
->port_id
, i
, NIC_PORT_RX_Q_SIZE
,
467 dev
->socket_id
, NULL
,
470 VLOG_INFO("Interface %s rxq(%d) setup error: %s",
471 dev
->up
.name
, i
, rte_strerror(-diag
));
477 /* Retry with less rx queues */
482 dev
->up
.n_rxq
= n_rxq
;
483 dev
->real_n_txq
= n_txq
;
493 dpdk_eth_dev_init(struct netdev_dpdk
*dev
) OVS_REQUIRES(dpdk_mutex
)
495 struct rte_pktmbuf_pool_private
*mbp_priv
;
496 struct rte_eth_dev_info info
;
497 struct ether_addr eth_addr
;
501 if (dev
->port_id
< 0 || dev
->port_id
>= rte_eth_dev_count()) {
505 rte_eth_dev_info_get(dev
->port_id
, &info
);
507 n_rxq
= MIN(info
.max_rx_queues
, dev
->up
.n_rxq
);
508 n_txq
= MIN(info
.max_tx_queues
, dev
->up
.n_txq
);
510 diag
= dpdk_eth_dev_queue_setup(dev
, n_rxq
, n_txq
);
512 VLOG_ERR("Interface %s(rxq:%d txq:%d) configure error: %s",
513 dev
->up
.name
, n_rxq
, n_txq
, rte_strerror(-diag
));
517 diag
= rte_eth_dev_start(dev
->port_id
);
519 VLOG_ERR("Interface %s start error: %s", dev
->up
.name
,
520 rte_strerror(-diag
));
524 rte_eth_promiscuous_enable(dev
->port_id
);
525 rte_eth_allmulticast_enable(dev
->port_id
);
527 memset(ð_addr
, 0x0, sizeof(eth_addr
));
528 rte_eth_macaddr_get(dev
->port_id
, ð_addr
);
529 VLOG_INFO_RL(&rl
, "Port %d: "ETH_ADDR_FMT
"",
530 dev
->port_id
, ETH_ADDR_BYTES_ARGS(eth_addr
.addr_bytes
));
532 memcpy(dev
->hwaddr
.ea
, eth_addr
.addr_bytes
, ETH_ADDR_LEN
);
533 rte_eth_link_get_nowait(dev
->port_id
, &dev
->link
);
535 mbp_priv
= rte_mempool_get_priv(dev
->dpdk_mp
->mp
);
536 dev
->buf_size
= mbp_priv
->mbuf_data_room_size
- RTE_PKTMBUF_HEADROOM
;
538 dev
->flags
= NETDEV_UP
| NETDEV_PROMISC
;
542 static struct netdev_dpdk
*
543 netdev_dpdk_cast(const struct netdev
*netdev
)
545 return CONTAINER_OF(netdev
, struct netdev_dpdk
, up
);
548 static struct netdev
*
549 netdev_dpdk_alloc(void)
551 struct netdev_dpdk
*netdev
= dpdk_rte_mzalloc(sizeof *netdev
);
556 netdev_dpdk_alloc_txq(struct netdev_dpdk
*netdev
, unsigned int n_txqs
)
560 netdev
->tx_q
= dpdk_rte_mzalloc(n_txqs
* sizeof *netdev
->tx_q
);
561 for (i
= 0; i
< n_txqs
; i
++) {
562 int numa_id
= ovs_numa_get_numa_id(i
);
564 if (!netdev
->txq_needs_locking
) {
565 /* Each index is considered as a cpu core id, since there should
566 * be one tx queue for each cpu core. If the corresponding core
567 * is not on the same numa node as 'netdev', flags the
569 netdev
->tx_q
[i
].flush_tx
= netdev
->socket_id
== numa_id
;
571 /* Queues are shared among CPUs. Always flush */
572 netdev
->tx_q
[i
].flush_tx
= true;
574 rte_spinlock_init(&netdev
->tx_q
[i
].tx_lock
);
579 netdev_dpdk_init(struct netdev
*netdev_
, unsigned int port_no
,
580 enum dpdk_dev_type type
)
581 OVS_REQUIRES(dpdk_mutex
)
583 struct netdev_dpdk
*netdev
= netdev_dpdk_cast(netdev_
);
587 ovs_mutex_init(&netdev
->mutex
);
588 ovs_mutex_lock(&netdev
->mutex
);
590 rte_spinlock_init(&netdev
->stats_lock
);
592 /* If the 'sid' is negative, it means that the kernel fails
593 * to obtain the pci numa info. In that situation, always
595 if (type
== DPDK_DEV_ETH
) {
596 sid
= rte_eth_dev_socket_id(port_no
);
598 sid
= rte_lcore_to_socket_id(rte_get_master_lcore());
601 netdev
->socket_id
= sid
< 0 ? SOCKET0
: sid
;
602 netdev
->port_id
= port_no
;
605 netdev
->mtu
= ETHER_MTU
;
606 netdev
->max_packet_len
= MTU_TO_MAX_LEN(netdev
->mtu
);
608 netdev
->dpdk_mp
= dpdk_mp_get(netdev
->socket_id
, netdev
->mtu
);
609 if (!netdev
->dpdk_mp
) {
614 netdev_
->n_txq
= NR_QUEUE
;
615 netdev_
->n_rxq
= NR_QUEUE
;
616 netdev
->real_n_txq
= NR_QUEUE
;
618 if (type
== DPDK_DEV_ETH
) {
619 netdev_dpdk_alloc_txq(netdev
, NR_QUEUE
);
620 err
= dpdk_eth_dev_init(netdev
);
626 list_push_back(&dpdk_list
, &netdev
->list_node
);
630 rte_free(netdev
->tx_q
);
632 ovs_mutex_unlock(&netdev
->mutex
);
637 dpdk_dev_parse_name(const char dev_name
[], const char prefix
[],
638 unsigned int *port_no
)
642 if (strncmp(dev_name
, prefix
, strlen(prefix
))) {
646 cport
= dev_name
+ strlen(prefix
);
647 *port_no
= strtol(cport
, NULL
, 0); /* string must be null terminated */
652 vhost_construct_helper(struct netdev
*netdev_
) OVS_REQUIRES(dpdk_mutex
)
654 if (rte_eal_init_ret
) {
655 return rte_eal_init_ret
;
658 return netdev_dpdk_init(netdev_
, -1, DPDK_DEV_VHOST
);
662 netdev_dpdk_vhost_cuse_construct(struct netdev
*netdev_
)
664 struct netdev_dpdk
*netdev
= netdev_dpdk_cast(netdev_
);
667 ovs_mutex_lock(&dpdk_mutex
);
668 strncpy(netdev
->vhost_id
, netdev
->up
.name
, sizeof(netdev
->vhost_id
));
669 err
= vhost_construct_helper(netdev_
);
670 ovs_mutex_unlock(&dpdk_mutex
);
675 netdev_dpdk_vhost_user_construct(struct netdev
*netdev_
)
677 struct netdev_dpdk
*netdev
= netdev_dpdk_cast(netdev_
);
680 ovs_mutex_lock(&dpdk_mutex
);
681 /* Take the name of the vhost-user port and append it to the location where
682 * the socket is to be created, then register the socket.
684 snprintf(netdev
->vhost_id
, sizeof(netdev
->vhost_id
), "%s/%s",
685 vhost_sock_dir
, netdev_
->name
);
686 err
= rte_vhost_driver_register(netdev
->vhost_id
);
688 VLOG_ERR("vhost-user socket device setup failure for socket %s\n",
691 VLOG_INFO("Socket %s created for vhost-user port %s\n", netdev
->vhost_id
, netdev_
->name
);
692 err
= vhost_construct_helper(netdev_
);
693 ovs_mutex_unlock(&dpdk_mutex
);
698 netdev_dpdk_construct(struct netdev
*netdev
)
700 unsigned int port_no
;
703 if (rte_eal_init_ret
) {
704 return rte_eal_init_ret
;
707 /* Names always start with "dpdk" */
708 err
= dpdk_dev_parse_name(netdev
->name
, "dpdk", &port_no
);
713 ovs_mutex_lock(&dpdk_mutex
);
714 err
= netdev_dpdk_init(netdev
, port_no
, DPDK_DEV_ETH
);
715 ovs_mutex_unlock(&dpdk_mutex
);
720 netdev_dpdk_destruct(struct netdev
*netdev_
)
722 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev_
);
724 ovs_mutex_lock(&dev
->mutex
);
725 rte_eth_dev_stop(dev
->port_id
);
726 ovs_mutex_unlock(&dev
->mutex
);
728 ovs_mutex_lock(&dpdk_mutex
);
730 list_remove(&dev
->list_node
);
731 dpdk_mp_put(dev
->dpdk_mp
);
732 ovs_mutex_unlock(&dpdk_mutex
);
736 netdev_dpdk_vhost_destruct(struct netdev
*netdev_
)
738 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev_
);
740 /* Can't remove a port while a guest is attached to it. */
741 if (netdev_dpdk_get_virtio(dev
) != NULL
) {
742 VLOG_ERR("Can not remove port, vhost device still attached");
746 if (rte_vhost_driver_unregister(dev
->vhost_id
)) {
747 VLOG_ERR("Unable to remove vhost-user socket %s", dev
->vhost_id
);
750 ovs_mutex_lock(&dpdk_mutex
);
751 list_remove(&dev
->list_node
);
752 dpdk_mp_put(dev
->dpdk_mp
);
753 ovs_mutex_unlock(&dpdk_mutex
);
757 netdev_dpdk_dealloc(struct netdev
*netdev_
)
759 struct netdev_dpdk
*netdev
= netdev_dpdk_cast(netdev_
);
765 netdev_dpdk_get_config(const struct netdev
*netdev_
, struct smap
*args
)
767 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev_
);
769 ovs_mutex_lock(&dev
->mutex
);
771 smap_add_format(args
, "configured_rx_queues", "%d", netdev_
->n_rxq
);
772 smap_add_format(args
, "requested_tx_queues", "%d", netdev_
->n_txq
);
773 smap_add_format(args
, "configured_tx_queues", "%d", dev
->real_n_txq
);
774 ovs_mutex_unlock(&dev
->mutex
);
780 netdev_dpdk_get_numa_id(const struct netdev
*netdev_
)
782 struct netdev_dpdk
*netdev
= netdev_dpdk_cast(netdev_
);
784 return netdev
->socket_id
;
787 /* Sets the number of tx queues and rx queues for the dpdk interface.
788 * If the configuration fails, do not try restoring its old configuration
789 * and just returns the error. */
791 netdev_dpdk_set_multiq(struct netdev
*netdev_
, unsigned int n_txq
,
794 struct netdev_dpdk
*netdev
= netdev_dpdk_cast(netdev_
);
796 int old_rxq
, old_txq
;
798 if (netdev
->up
.n_txq
== n_txq
&& netdev
->up
.n_rxq
== n_rxq
) {
802 ovs_mutex_lock(&dpdk_mutex
);
803 ovs_mutex_lock(&netdev
->mutex
);
805 rte_eth_dev_stop(netdev
->port_id
);
807 old_txq
= netdev
->up
.n_txq
;
808 old_rxq
= netdev
->up
.n_rxq
;
809 netdev
->up
.n_txq
= n_txq
;
810 netdev
->up
.n_rxq
= n_rxq
;
812 rte_free(netdev
->tx_q
);
813 err
= dpdk_eth_dev_init(netdev
);
814 netdev_dpdk_alloc_txq(netdev
, netdev
->real_n_txq
);
816 /* If there has been an error, it means that the requested queues
817 * have not been created. Restore the old numbers. */
818 netdev
->up
.n_txq
= old_txq
;
819 netdev
->up
.n_rxq
= old_rxq
;
822 netdev
->txq_needs_locking
= netdev
->real_n_txq
!= netdev
->up
.n_txq
;
824 ovs_mutex_unlock(&netdev
->mutex
);
825 ovs_mutex_unlock(&dpdk_mutex
);
831 netdev_dpdk_vhost_cuse_set_multiq(struct netdev
*netdev_
, unsigned int n_txq
,
834 struct netdev_dpdk
*netdev
= netdev_dpdk_cast(netdev_
);
837 if (netdev
->up
.n_txq
== n_txq
&& netdev
->up
.n_rxq
== n_rxq
) {
841 ovs_mutex_lock(&dpdk_mutex
);
842 ovs_mutex_lock(&netdev
->mutex
);
844 netdev
->up
.n_txq
= n_txq
;
845 netdev
->real_n_txq
= 1;
846 netdev
->up
.n_rxq
= 1;
847 netdev
->txq_needs_locking
= netdev
->real_n_txq
!= netdev
->up
.n_txq
;
849 ovs_mutex_unlock(&netdev
->mutex
);
850 ovs_mutex_unlock(&dpdk_mutex
);
856 netdev_dpdk_vhost_set_multiq(struct netdev
*netdev_
, unsigned int n_txq
,
859 struct netdev_dpdk
*netdev
= netdev_dpdk_cast(netdev_
);
862 if (netdev
->up
.n_txq
== n_txq
&& netdev
->up
.n_rxq
== n_rxq
) {
866 ovs_mutex_lock(&dpdk_mutex
);
867 ovs_mutex_lock(&netdev
->mutex
);
869 rte_free(netdev
->tx_q
);
870 netdev
->up
.n_txq
= n_txq
;
871 netdev
->up
.n_rxq
= n_rxq
;
872 netdev_dpdk_alloc_txq(netdev
, netdev
->up
.n_txq
);
874 ovs_mutex_unlock(&netdev
->mutex
);
875 ovs_mutex_unlock(&dpdk_mutex
);
880 static struct netdev_rxq
*
881 netdev_dpdk_rxq_alloc(void)
883 struct netdev_rxq_dpdk
*rx
= dpdk_rte_mzalloc(sizeof *rx
);
888 static struct netdev_rxq_dpdk
*
889 netdev_rxq_dpdk_cast(const struct netdev_rxq
*rx
)
891 return CONTAINER_OF(rx
, struct netdev_rxq_dpdk
, up
);
895 netdev_dpdk_rxq_construct(struct netdev_rxq
*rxq_
)
897 struct netdev_rxq_dpdk
*rx
= netdev_rxq_dpdk_cast(rxq_
);
898 struct netdev_dpdk
*netdev
= netdev_dpdk_cast(rx
->up
.netdev
);
900 ovs_mutex_lock(&netdev
->mutex
);
901 rx
->port_id
= netdev
->port_id
;
902 ovs_mutex_unlock(&netdev
->mutex
);
908 netdev_dpdk_rxq_destruct(struct netdev_rxq
*rxq_ OVS_UNUSED
)
913 netdev_dpdk_rxq_dealloc(struct netdev_rxq
*rxq_
)
915 struct netdev_rxq_dpdk
*rx
= netdev_rxq_dpdk_cast(rxq_
);
921 dpdk_queue_flush__(struct netdev_dpdk
*dev
, int qid
)
923 struct dpdk_tx_queue
*txq
= &dev
->tx_q
[qid
];
926 while (nb_tx
!= txq
->count
) {
929 ret
= rte_eth_tx_burst(dev
->port_id
, qid
, txq
->burst_pkts
+ nb_tx
,
938 if (OVS_UNLIKELY(nb_tx
!= txq
->count
)) {
939 /* free buffers, which we couldn't transmit, one at a time (each
940 * packet could come from a different mempool) */
943 for (i
= nb_tx
; i
< txq
->count
; i
++) {
944 rte_pktmbuf_free_seg(txq
->burst_pkts
[i
]);
946 rte_spinlock_lock(&dev
->stats_lock
);
947 dev
->stats
.tx_dropped
+= txq
->count
-nb_tx
;
948 rte_spinlock_unlock(&dev
->stats_lock
);
952 txq
->tsc
= rte_get_timer_cycles();
956 dpdk_queue_flush(struct netdev_dpdk
*dev
, int qid
)
958 struct dpdk_tx_queue
*txq
= &dev
->tx_q
[qid
];
960 if (txq
->count
== 0) {
963 dpdk_queue_flush__(dev
, qid
);
967 is_vhost_running(struct virtio_net
*dev
)
969 return (dev
!= NULL
&& (dev
->flags
& VIRTIO_DEV_RUNNING
));
973 netdev_dpdk_vhost_update_rx_counters(struct netdev_stats
*stats
,
974 struct dp_packet
**packets
, int count
)
977 struct dp_packet
*packet
;
979 stats
->rx_packets
+= count
;
980 for (i
= 0; i
< count
; i
++) {
983 if (OVS_UNLIKELY(dp_packet_size(packet
) < ETH_HEADER_LEN
)) {
984 /* This only protects the following multicast counting from
985 * too short packets, but it does not stop the packet from
986 * further processing. */
988 stats
->rx_length_errors
++;
992 struct eth_header
*eh
= (struct eth_header
*) dp_packet_data(packet
);
993 if (OVS_UNLIKELY(eth_addr_is_multicast(eh
->eth_dst
))) {
997 stats
->rx_bytes
+= dp_packet_size(packet
);
1002 * The receive path for the vhost port is the TX path out from guest.
1005 netdev_dpdk_vhost_rxq_recv(struct netdev_rxq
*rxq_
,
1006 struct dp_packet
**packets
, int *c
)
1008 struct netdev_rxq_dpdk
*rx
= netdev_rxq_dpdk_cast(rxq_
);
1009 struct netdev
*netdev
= rx
->up
.netdev
;
1010 struct netdev_dpdk
*vhost_dev
= netdev_dpdk_cast(netdev
);
1011 struct virtio_net
*virtio_dev
= netdev_dpdk_get_virtio(vhost_dev
);
1012 int qid
= rxq_
->queue_id
;
1015 if (OVS_UNLIKELY(!is_vhost_running(virtio_dev
))) {
1019 if (rxq_
->queue_id
>= vhost_dev
->real_n_rxq
) {
1023 nb_rx
= rte_vhost_dequeue_burst(virtio_dev
, qid
* VIRTIO_QNUM
+ VIRTIO_TXQ
,
1024 vhost_dev
->dpdk_mp
->mp
,
1025 (struct rte_mbuf
**)packets
,
1031 rte_spinlock_lock(&vhost_dev
->stats_lock
);
1032 netdev_dpdk_vhost_update_rx_counters(&vhost_dev
->stats
, packets
, nb_rx
);
1033 rte_spinlock_unlock(&vhost_dev
->stats_lock
);
1040 netdev_dpdk_rxq_recv(struct netdev_rxq
*rxq_
, struct dp_packet
**packets
,
1043 struct netdev_rxq_dpdk
*rx
= netdev_rxq_dpdk_cast(rxq_
);
1044 struct netdev
*netdev
= rx
->up
.netdev
;
1045 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev
);
1048 /* There is only one tx queue for this core. Do not flush other
1050 * Do not flush tx queue which is shared among CPUs
1051 * since it is always flushed */
1052 if (rxq_
->queue_id
== rte_lcore_id() &&
1053 OVS_LIKELY(!dev
->txq_needs_locking
)) {
1054 dpdk_queue_flush(dev
, rxq_
->queue_id
);
1057 nb_rx
= rte_eth_rx_burst(rx
->port_id
, rxq_
->queue_id
,
1058 (struct rte_mbuf
**) packets
,
1070 netdev_dpdk_vhost_update_tx_counters(struct netdev_stats
*stats
,
1071 struct dp_packet
**packets
,
1076 int sent
= attempted
- dropped
;
1078 stats
->tx_packets
+= sent
;
1079 stats
->tx_dropped
+= dropped
;
1081 for (i
= 0; i
< sent
; i
++) {
1082 stats
->tx_bytes
+= dp_packet_size(packets
[i
]);
1087 __netdev_dpdk_vhost_send(struct netdev
*netdev
, int qid
,
1088 struct dp_packet
**pkts
, int cnt
,
1091 struct netdev_dpdk
*vhost_dev
= netdev_dpdk_cast(netdev
);
1092 struct virtio_net
*virtio_dev
= netdev_dpdk_get_virtio(vhost_dev
);
1093 struct rte_mbuf
**cur_pkts
= (struct rte_mbuf
**) pkts
;
1094 unsigned int total_pkts
= cnt
;
1097 if (OVS_UNLIKELY(!is_vhost_running(virtio_dev
))) {
1098 rte_spinlock_lock(&vhost_dev
->stats_lock
);
1099 vhost_dev
->stats
.tx_dropped
+= cnt
;
1100 rte_spinlock_unlock(&vhost_dev
->stats_lock
);
1104 if (vhost_dev
->txq_needs_locking
) {
1105 qid
= qid
% vhost_dev
->real_n_txq
;
1106 rte_spinlock_lock(&vhost_dev
->tx_q
[qid
].tx_lock
);
1110 int vhost_qid
= qid
* VIRTIO_QNUM
+ VIRTIO_RXQ
;
1111 unsigned int tx_pkts
;
1113 tx_pkts
= rte_vhost_enqueue_burst(virtio_dev
, vhost_qid
,
1115 if (OVS_LIKELY(tx_pkts
)) {
1116 /* Packets have been sent.*/
1118 /* Prepare for possible next iteration.*/
1119 cur_pkts
= &cur_pkts
[tx_pkts
];
1121 uint64_t timeout
= VHOST_ENQ_RETRY_USECS
* rte_get_timer_hz() / 1E6
;
1122 unsigned int expired
= 0;
1125 start
= rte_get_timer_cycles();
1129 * Unable to enqueue packets to vhost interface.
1130 * Check available entries before retrying.
1132 while (!rte_vring_available_entries(virtio_dev
, vhost_qid
)) {
1133 if (OVS_UNLIKELY((rte_get_timer_cycles() - start
) > timeout
)) {
1139 /* break out of main loop. */
1145 if (vhost_dev
->txq_needs_locking
) {
1146 rte_spinlock_unlock(&vhost_dev
->tx_q
[qid
].tx_lock
);
1149 rte_spinlock_lock(&vhost_dev
->stats_lock
);
1150 netdev_dpdk_vhost_update_tx_counters(&vhost_dev
->stats
, pkts
, total_pkts
,
1152 rte_spinlock_unlock(&vhost_dev
->stats_lock
);
1158 for (i
= 0; i
< total_pkts
; i
++) {
1159 dp_packet_delete(pkts
[i
]);
1165 dpdk_queue_pkts(struct netdev_dpdk
*dev
, int qid
,
1166 struct rte_mbuf
**pkts
, int cnt
)
1168 struct dpdk_tx_queue
*txq
= &dev
->tx_q
[qid
];
1174 int freeslots
= MAX_TX_QUEUE_LEN
- txq
->count
;
1175 int tocopy
= MIN(freeslots
, cnt
-i
);
1177 memcpy(&txq
->burst_pkts
[txq
->count
], &pkts
[i
],
1178 tocopy
* sizeof (struct rte_mbuf
*));
1180 txq
->count
+= tocopy
;
1183 if (txq
->count
== MAX_TX_QUEUE_LEN
|| txq
->flush_tx
) {
1184 dpdk_queue_flush__(dev
, qid
);
1186 diff_tsc
= rte_get_timer_cycles() - txq
->tsc
;
1187 if (diff_tsc
>= DRAIN_TSC
) {
1188 dpdk_queue_flush__(dev
, qid
);
1193 /* Tx function. Transmit packets indefinitely */
1195 dpdk_do_tx_copy(struct netdev
*netdev
, int qid
, struct dp_packet
**pkts
,
1197 OVS_NO_THREAD_SAFETY_ANALYSIS
1199 #if !defined(__CHECKER__) && !defined(_WIN32)
1200 const size_t PKT_ARRAY_SIZE
= cnt
;
1202 /* Sparse or MSVC doesn't like variable length array. */
1203 enum { PKT_ARRAY_SIZE
= NETDEV_MAX_BURST
};
1205 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev
);
1206 struct rte_mbuf
*mbufs
[PKT_ARRAY_SIZE
];
1211 /* If we are on a non pmd thread we have to use the mempool mutex, because
1212 * every non pmd thread shares the same mempool cache */
1214 if (!dpdk_thread_is_pmd()) {
1215 ovs_mutex_lock(&nonpmd_mempool_mutex
);
1218 for (i
= 0; i
< cnt
; i
++) {
1219 int size
= dp_packet_size(pkts
[i
]);
1221 if (OVS_UNLIKELY(size
> dev
->max_packet_len
)) {
1222 VLOG_WARN_RL(&rl
, "Too big size %d max_packet_len %d",
1223 (int)size
, dev
->max_packet_len
);
1229 mbufs
[newcnt
] = rte_pktmbuf_alloc(dev
->dpdk_mp
->mp
);
1231 if (!mbufs
[newcnt
]) {
1236 /* We have to do a copy for now */
1237 memcpy(rte_pktmbuf_mtod(mbufs
[newcnt
], void *), dp_packet_data(pkts
[i
]), size
);
1239 rte_pktmbuf_data_len(mbufs
[newcnt
]) = size
;
1240 rte_pktmbuf_pkt_len(mbufs
[newcnt
]) = size
;
1245 if (OVS_UNLIKELY(dropped
)) {
1246 rte_spinlock_lock(&dev
->stats_lock
);
1247 dev
->stats
.tx_dropped
+= dropped
;
1248 rte_spinlock_unlock(&dev
->stats_lock
);
1251 if (dev
->type
== DPDK_DEV_VHOST
) {
1252 __netdev_dpdk_vhost_send(netdev
, qid
, (struct dp_packet
**) mbufs
, newcnt
, true);
1254 dpdk_queue_pkts(dev
, qid
, mbufs
, newcnt
);
1255 dpdk_queue_flush(dev
, qid
);
1258 if (!dpdk_thread_is_pmd()) {
1259 ovs_mutex_unlock(&nonpmd_mempool_mutex
);
1264 netdev_dpdk_vhost_send(struct netdev
*netdev
, int qid
, struct dp_packet
**pkts
,
1265 int cnt
, bool may_steal
)
1267 if (OVS_UNLIKELY(pkts
[0]->source
!= DPBUF_DPDK
)) {
1270 dpdk_do_tx_copy(netdev
, qid
, pkts
, cnt
);
1272 for (i
= 0; i
< cnt
; i
++) {
1273 dp_packet_delete(pkts
[i
]);
1277 __netdev_dpdk_vhost_send(netdev
, qid
, pkts
, cnt
, may_steal
);
1283 netdev_dpdk_send__(struct netdev_dpdk
*dev
, int qid
,
1284 struct dp_packet
**pkts
, int cnt
, bool may_steal
)
1288 if (OVS_UNLIKELY(dev
->txq_needs_locking
)) {
1289 qid
= qid
% dev
->real_n_txq
;
1290 rte_spinlock_lock(&dev
->tx_q
[qid
].tx_lock
);
1293 if (OVS_UNLIKELY(!may_steal
||
1294 pkts
[0]->source
!= DPBUF_DPDK
)) {
1295 struct netdev
*netdev
= &dev
->up
;
1297 dpdk_do_tx_copy(netdev
, qid
, pkts
, cnt
);
1300 for (i
= 0; i
< cnt
; i
++) {
1301 dp_packet_delete(pkts
[i
]);
1305 int next_tx_idx
= 0;
1308 for (i
= 0; i
< cnt
; i
++) {
1309 int size
= dp_packet_size(pkts
[i
]);
1311 if (OVS_UNLIKELY(size
> dev
->max_packet_len
)) {
1312 if (next_tx_idx
!= i
) {
1313 dpdk_queue_pkts(dev
, qid
,
1314 (struct rte_mbuf
**)&pkts
[next_tx_idx
],
1318 VLOG_WARN_RL(&rl
, "Too big size %d max_packet_len %d",
1319 (int)size
, dev
->max_packet_len
);
1321 dp_packet_delete(pkts
[i
]);
1323 next_tx_idx
= i
+ 1;
1326 if (next_tx_idx
!= cnt
) {
1327 dpdk_queue_pkts(dev
, qid
,
1328 (struct rte_mbuf
**)&pkts
[next_tx_idx
],
1332 if (OVS_UNLIKELY(dropped
)) {
1333 rte_spinlock_lock(&dev
->stats_lock
);
1334 dev
->stats
.tx_dropped
+= dropped
;
1335 rte_spinlock_unlock(&dev
->stats_lock
);
1339 if (OVS_UNLIKELY(dev
->txq_needs_locking
)) {
1340 rte_spinlock_unlock(&dev
->tx_q
[qid
].tx_lock
);
1345 netdev_dpdk_eth_send(struct netdev
*netdev
, int qid
,
1346 struct dp_packet
**pkts
, int cnt
, bool may_steal
)
1348 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev
);
1350 netdev_dpdk_send__(dev
, qid
, pkts
, cnt
, may_steal
);
1355 netdev_dpdk_set_etheraddr(struct netdev
*netdev
, const struct eth_addr mac
)
1357 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev
);
1359 ovs_mutex_lock(&dev
->mutex
);
1360 if (!eth_addr_equals(dev
->hwaddr
, mac
)) {
1362 netdev_change_seq_changed(netdev
);
1364 ovs_mutex_unlock(&dev
->mutex
);
1370 netdev_dpdk_get_etheraddr(const struct netdev
*netdev
, struct eth_addr
*mac
)
1372 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev
);
1374 ovs_mutex_lock(&dev
->mutex
);
1376 ovs_mutex_unlock(&dev
->mutex
);
1382 netdev_dpdk_get_mtu(const struct netdev
*netdev
, int *mtup
)
1384 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev
);
1386 ovs_mutex_lock(&dev
->mutex
);
1388 ovs_mutex_unlock(&dev
->mutex
);
1394 netdev_dpdk_set_mtu(const struct netdev
*netdev
, int mtu
)
1396 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev
);
1398 struct dpdk_mp
*old_mp
;
1401 ovs_mutex_lock(&dpdk_mutex
);
1402 ovs_mutex_lock(&dev
->mutex
);
1403 if (dev
->mtu
== mtu
) {
1408 mp
= dpdk_mp_get(dev
->socket_id
, dev
->mtu
);
1414 rte_eth_dev_stop(dev
->port_id
);
1417 old_mp
= dev
->dpdk_mp
;
1420 dev
->max_packet_len
= MTU_TO_MAX_LEN(dev
->mtu
);
1422 err
= dpdk_eth_dev_init(dev
);
1426 dev
->dpdk_mp
= old_mp
;
1427 dev
->max_packet_len
= MTU_TO_MAX_LEN(dev
->mtu
);
1428 dpdk_eth_dev_init(dev
);
1432 dpdk_mp_put(old_mp
);
1433 netdev_change_seq_changed(netdev
);
1435 ovs_mutex_unlock(&dev
->mutex
);
1436 ovs_mutex_unlock(&dpdk_mutex
);
1441 netdev_dpdk_get_carrier(const struct netdev
*netdev_
, bool *carrier
);
1444 netdev_dpdk_vhost_get_stats(const struct netdev
*netdev
,
1445 struct netdev_stats
*stats
)
1447 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev
);
1449 ovs_mutex_lock(&dev
->mutex
);
1450 memset(stats
, 0, sizeof(*stats
));
1451 /* Unsupported Stats */
1452 stats
->collisions
= UINT64_MAX
;
1453 stats
->rx_crc_errors
= UINT64_MAX
;
1454 stats
->rx_fifo_errors
= UINT64_MAX
;
1455 stats
->rx_frame_errors
= UINT64_MAX
;
1456 stats
->rx_missed_errors
= UINT64_MAX
;
1457 stats
->rx_over_errors
= UINT64_MAX
;
1458 stats
->tx_aborted_errors
= UINT64_MAX
;
1459 stats
->tx_carrier_errors
= UINT64_MAX
;
1460 stats
->tx_errors
= UINT64_MAX
;
1461 stats
->tx_fifo_errors
= UINT64_MAX
;
1462 stats
->tx_heartbeat_errors
= UINT64_MAX
;
1463 stats
->tx_window_errors
= UINT64_MAX
;
1464 stats
->rx_dropped
+= UINT64_MAX
;
1466 rte_spinlock_lock(&dev
->stats_lock
);
1467 /* Supported Stats */
1468 stats
->rx_packets
+= dev
->stats
.rx_packets
;
1469 stats
->tx_packets
+= dev
->stats
.tx_packets
;
1470 stats
->tx_dropped
+= dev
->stats
.tx_dropped
;
1471 stats
->multicast
= dev
->stats
.multicast
;
1472 stats
->rx_bytes
= dev
->stats
.rx_bytes
;
1473 stats
->tx_bytes
= dev
->stats
.tx_bytes
;
1474 stats
->rx_errors
= dev
->stats
.rx_errors
;
1475 stats
->rx_length_errors
= dev
->stats
.rx_length_errors
;
1476 rte_spinlock_unlock(&dev
->stats_lock
);
1478 ovs_mutex_unlock(&dev
->mutex
);
1484 netdev_dpdk_get_stats(const struct netdev
*netdev
, struct netdev_stats
*stats
)
1486 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev
);
1487 struct rte_eth_stats rte_stats
;
1490 netdev_dpdk_get_carrier(netdev
, &gg
);
1491 ovs_mutex_lock(&dev
->mutex
);
1492 rte_eth_stats_get(dev
->port_id
, &rte_stats
);
1494 memset(stats
, 0, sizeof(*stats
));
1496 stats
->rx_packets
= rte_stats
.ipackets
;
1497 stats
->tx_packets
= rte_stats
.opackets
;
1498 stats
->rx_bytes
= rte_stats
.ibytes
;
1499 stats
->tx_bytes
= rte_stats
.obytes
;
1500 /* DPDK counts imissed as errors, but count them here as dropped instead */
1501 stats
->rx_errors
= rte_stats
.ierrors
- rte_stats
.imissed
;
1502 stats
->tx_errors
= rte_stats
.oerrors
;
1503 stats
->multicast
= rte_stats
.imcasts
;
1505 rte_spinlock_lock(&dev
->stats_lock
);
1506 stats
->tx_dropped
= dev
->stats
.tx_dropped
;
1507 rte_spinlock_unlock(&dev
->stats_lock
);
1509 /* These are the available DPDK counters for packets not received due to
1510 * local resource constraints in DPDK and NIC respectively. */
1511 stats
->rx_dropped
= rte_stats
.rx_nombuf
+ rte_stats
.imissed
;
1512 stats
->collisions
= UINT64_MAX
;
1514 stats
->rx_length_errors
= UINT64_MAX
;
1515 stats
->rx_over_errors
= UINT64_MAX
;
1516 stats
->rx_crc_errors
= UINT64_MAX
;
1517 stats
->rx_frame_errors
= UINT64_MAX
;
1518 stats
->rx_fifo_errors
= UINT64_MAX
;
1519 stats
->rx_missed_errors
= rte_stats
.imissed
;
1521 stats
->tx_aborted_errors
= UINT64_MAX
;
1522 stats
->tx_carrier_errors
= UINT64_MAX
;
1523 stats
->tx_fifo_errors
= UINT64_MAX
;
1524 stats
->tx_heartbeat_errors
= UINT64_MAX
;
1525 stats
->tx_window_errors
= UINT64_MAX
;
1527 ovs_mutex_unlock(&dev
->mutex
);
1533 netdev_dpdk_get_features(const struct netdev
*netdev_
,
1534 enum netdev_features
*current
,
1535 enum netdev_features
*advertised OVS_UNUSED
,
1536 enum netdev_features
*supported OVS_UNUSED
,
1537 enum netdev_features
*peer OVS_UNUSED
)
1539 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev_
);
1540 struct rte_eth_link link
;
1542 ovs_mutex_lock(&dev
->mutex
);
1544 ovs_mutex_unlock(&dev
->mutex
);
1546 if (link
.link_duplex
== ETH_LINK_AUTONEG_DUPLEX
) {
1547 if (link
.link_speed
== ETH_LINK_SPEED_AUTONEG
) {
1548 *current
= NETDEV_F_AUTONEG
;
1550 } else if (link
.link_duplex
== ETH_LINK_HALF_DUPLEX
) {
1551 if (link
.link_speed
== ETH_LINK_SPEED_10
) {
1552 *current
= NETDEV_F_10MB_HD
;
1554 if (link
.link_speed
== ETH_LINK_SPEED_100
) {
1555 *current
= NETDEV_F_100MB_HD
;
1557 if (link
.link_speed
== ETH_LINK_SPEED_1000
) {
1558 *current
= NETDEV_F_1GB_HD
;
1560 } else if (link
.link_duplex
== ETH_LINK_FULL_DUPLEX
) {
1561 if (link
.link_speed
== ETH_LINK_SPEED_10
) {
1562 *current
= NETDEV_F_10MB_FD
;
1564 if (link
.link_speed
== ETH_LINK_SPEED_100
) {
1565 *current
= NETDEV_F_100MB_FD
;
1567 if (link
.link_speed
== ETH_LINK_SPEED_1000
) {
1568 *current
= NETDEV_F_1GB_FD
;
1570 if (link
.link_speed
== ETH_LINK_SPEED_10000
) {
1571 *current
= NETDEV_F_10GB_FD
;
1579 netdev_dpdk_get_ifindex(const struct netdev
*netdev
)
1581 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev
);
1584 ovs_mutex_lock(&dev
->mutex
);
1585 ifindex
= dev
->port_id
;
1586 ovs_mutex_unlock(&dev
->mutex
);
1592 netdev_dpdk_get_carrier(const struct netdev
*netdev_
, bool *carrier
)
1594 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev_
);
1596 ovs_mutex_lock(&dev
->mutex
);
1597 check_link_status(dev
);
1598 *carrier
= dev
->link
.link_status
;
1600 ovs_mutex_unlock(&dev
->mutex
);
1606 netdev_dpdk_vhost_get_carrier(const struct netdev
*netdev_
, bool *carrier
)
1608 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev_
);
1609 struct virtio_net
*virtio_dev
= netdev_dpdk_get_virtio(dev
);
1611 ovs_mutex_lock(&dev
->mutex
);
1613 if (is_vhost_running(virtio_dev
)) {
1619 ovs_mutex_unlock(&dev
->mutex
);
1624 static long long int
1625 netdev_dpdk_get_carrier_resets(const struct netdev
*netdev_
)
1627 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev_
);
1628 long long int carrier_resets
;
1630 ovs_mutex_lock(&dev
->mutex
);
1631 carrier_resets
= dev
->link_reset_cnt
;
1632 ovs_mutex_unlock(&dev
->mutex
);
1634 return carrier_resets
;
1638 netdev_dpdk_set_miimon(struct netdev
*netdev_ OVS_UNUSED
,
1639 long long int interval OVS_UNUSED
)
1645 netdev_dpdk_update_flags__(struct netdev_dpdk
*dev
,
1646 enum netdev_flags off
, enum netdev_flags on
,
1647 enum netdev_flags
*old_flagsp
) OVS_REQUIRES(dev
->mutex
)
1651 if ((off
| on
) & ~(NETDEV_UP
| NETDEV_PROMISC
)) {
1655 *old_flagsp
= dev
->flags
;
1659 if (dev
->flags
== *old_flagsp
) {
1663 if (dev
->type
== DPDK_DEV_ETH
) {
1664 if (dev
->flags
& NETDEV_UP
) {
1665 err
= rte_eth_dev_start(dev
->port_id
);
1670 if (dev
->flags
& NETDEV_PROMISC
) {
1671 rte_eth_promiscuous_enable(dev
->port_id
);
1674 if (!(dev
->flags
& NETDEV_UP
)) {
1675 rte_eth_dev_stop(dev
->port_id
);
1683 netdev_dpdk_update_flags(struct netdev
*netdev_
,
1684 enum netdev_flags off
, enum netdev_flags on
,
1685 enum netdev_flags
*old_flagsp
)
1687 struct netdev_dpdk
*netdev
= netdev_dpdk_cast(netdev_
);
1690 ovs_mutex_lock(&netdev
->mutex
);
1691 error
= netdev_dpdk_update_flags__(netdev
, off
, on
, old_flagsp
);
1692 ovs_mutex_unlock(&netdev
->mutex
);
1698 netdev_dpdk_get_status(const struct netdev
*netdev_
, struct smap
*args
)
1700 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev_
);
1701 struct rte_eth_dev_info dev_info
;
1703 if (dev
->port_id
< 0)
1706 ovs_mutex_lock(&dev
->mutex
);
1707 rte_eth_dev_info_get(dev
->port_id
, &dev_info
);
1708 ovs_mutex_unlock(&dev
->mutex
);
1710 smap_add_format(args
, "driver_name", "%s", dev_info
.driver_name
);
1712 smap_add_format(args
, "port_no", "%d", dev
->port_id
);
1713 smap_add_format(args
, "numa_id", "%d", rte_eth_dev_socket_id(dev
->port_id
));
1714 smap_add_format(args
, "driver_name", "%s", dev_info
.driver_name
);
1715 smap_add_format(args
, "min_rx_bufsize", "%u", dev_info
.min_rx_bufsize
);
1716 smap_add_format(args
, "max_rx_pktlen", "%u", dev_info
.max_rx_pktlen
);
1717 smap_add_format(args
, "max_rx_queues", "%u", dev_info
.max_rx_queues
);
1718 smap_add_format(args
, "max_tx_queues", "%u", dev_info
.max_tx_queues
);
1719 smap_add_format(args
, "max_mac_addrs", "%u", dev_info
.max_mac_addrs
);
1720 smap_add_format(args
, "max_hash_mac_addrs", "%u", dev_info
.max_hash_mac_addrs
);
1721 smap_add_format(args
, "max_vfs", "%u", dev_info
.max_vfs
);
1722 smap_add_format(args
, "max_vmdq_pools", "%u", dev_info
.max_vmdq_pools
);
1724 if (dev_info
.pci_dev
) {
1725 smap_add_format(args
, "pci-vendor_id", "0x%u",
1726 dev_info
.pci_dev
->id
.vendor_id
);
1727 smap_add_format(args
, "pci-device_id", "0x%x",
1728 dev_info
.pci_dev
->id
.device_id
);
1735 netdev_dpdk_set_admin_state__(struct netdev_dpdk
*dev
, bool admin_state
)
1736 OVS_REQUIRES(dev
->mutex
)
1738 enum netdev_flags old_flags
;
1741 netdev_dpdk_update_flags__(dev
, 0, NETDEV_UP
, &old_flags
);
1743 netdev_dpdk_update_flags__(dev
, NETDEV_UP
, 0, &old_flags
);
1748 netdev_dpdk_set_admin_state(struct unixctl_conn
*conn
, int argc
,
1749 const char *argv
[], void *aux OVS_UNUSED
)
1753 if (!strcasecmp(argv
[argc
- 1], "up")) {
1755 } else if ( !strcasecmp(argv
[argc
- 1], "down")) {
1758 unixctl_command_reply_error(conn
, "Invalid Admin State");
1763 struct netdev
*netdev
= netdev_from_name(argv
[1]);
1764 if (netdev
&& is_dpdk_class(netdev
->netdev_class
)) {
1765 struct netdev_dpdk
*dpdk_dev
= netdev_dpdk_cast(netdev
);
1767 ovs_mutex_lock(&dpdk_dev
->mutex
);
1768 netdev_dpdk_set_admin_state__(dpdk_dev
, up
);
1769 ovs_mutex_unlock(&dpdk_dev
->mutex
);
1771 netdev_close(netdev
);
1773 unixctl_command_reply_error(conn
, "Not a DPDK Interface");
1774 netdev_close(netdev
);
1778 struct netdev_dpdk
*netdev
;
1780 ovs_mutex_lock(&dpdk_mutex
);
1781 LIST_FOR_EACH (netdev
, list_node
, &dpdk_list
) {
1782 ovs_mutex_lock(&netdev
->mutex
);
1783 netdev_dpdk_set_admin_state__(netdev
, up
);
1784 ovs_mutex_unlock(&netdev
->mutex
);
1786 ovs_mutex_unlock(&dpdk_mutex
);
1788 unixctl_command_reply(conn
, "OK");
1792 * Set virtqueue flags so that we do not receive interrupts.
1795 set_irq_status(struct virtio_net
*dev
)
1800 for (i
= 0; i
< dev
->virt_qp_nb
; i
++) {
1801 idx
= i
* VIRTIO_QNUM
;
1802 rte_vhost_enable_guest_notification(dev
, idx
+ VIRTIO_RXQ
, 0);
1803 rte_vhost_enable_guest_notification(dev
, idx
+ VIRTIO_TXQ
, 0);
1809 netdev_dpdk_vhost_set_queues(struct netdev_dpdk
*netdev
, struct virtio_net
*dev
)
1813 qp_num
= dev
->virt_qp_nb
;
1814 if (qp_num
> netdev
->up
.n_rxq
) {
1815 VLOG_ERR("vHost Device '%s' %"PRIu64
" can't be added - "
1816 "too many queues %d > %d", dev
->ifname
, dev
->device_fh
,
1817 qp_num
, netdev
->up
.n_rxq
);
1821 netdev
->real_n_rxq
= qp_num
;
1822 netdev
->real_n_txq
= qp_num
;
1823 if (netdev
->up
.n_txq
> netdev
->real_n_txq
) {
1824 netdev
->txq_needs_locking
= true;
1826 netdev
->txq_needs_locking
= false;
1833 * A new virtio-net device is added to a vhost port.
1836 new_device(struct virtio_net
*dev
)
1838 struct netdev_dpdk
*netdev
;
1839 bool exists
= false;
1841 ovs_mutex_lock(&dpdk_mutex
);
1842 /* Add device to the vhost port with the same name as that passed down. */
1843 LIST_FOR_EACH(netdev
, list_node
, &dpdk_list
) {
1844 if (strncmp(dev
->ifname
, netdev
->vhost_id
, IF_NAME_SZ
) == 0) {
1845 ovs_mutex_lock(&netdev
->mutex
);
1846 if (netdev_dpdk_vhost_set_queues(netdev
, dev
)) {
1847 ovs_mutex_unlock(&netdev
->mutex
);
1848 ovs_mutex_unlock(&dpdk_mutex
);
1851 ovsrcu_set(&netdev
->virtio_dev
, dev
);
1853 dev
->flags
|= VIRTIO_DEV_RUNNING
;
1854 /* Disable notifications. */
1855 set_irq_status(dev
);
1856 ovs_mutex_unlock(&netdev
->mutex
);
1860 ovs_mutex_unlock(&dpdk_mutex
);
1863 VLOG_INFO("vHost Device '%s' %"PRIu64
" can't be added - name not "
1864 "found", dev
->ifname
, dev
->device_fh
);
1869 VLOG_INFO("vHost Device '%s' %"PRIu64
" has been added", dev
->ifname
,
1875 * Remove a virtio-net device from the specific vhost port. Use dev->remove
1876 * flag to stop any more packets from being sent or received to/from a VM and
1877 * ensure all currently queued packets have been sent/received before removing
1881 destroy_device(volatile struct virtio_net
*dev
)
1883 struct netdev_dpdk
*vhost_dev
;
1885 ovs_mutex_lock(&dpdk_mutex
);
1886 LIST_FOR_EACH (vhost_dev
, list_node
, &dpdk_list
) {
1887 if (netdev_dpdk_get_virtio(vhost_dev
) == dev
) {
1889 ovs_mutex_lock(&vhost_dev
->mutex
);
1890 dev
->flags
&= ~VIRTIO_DEV_RUNNING
;
1891 ovsrcu_set(&vhost_dev
->virtio_dev
, NULL
);
1892 ovs_mutex_unlock(&vhost_dev
->mutex
);
1895 * Wait for other threads to quiesce before
1896 * setting the virtio_dev to NULL.
1898 ovsrcu_synchronize();
1900 * As call to ovsrcu_synchronize() will end the quiescent state,
1901 * put thread back into quiescent state before returning.
1903 ovsrcu_quiesce_start();
1906 ovs_mutex_unlock(&dpdk_mutex
);
1908 VLOG_INFO("vHost Device '%s' %"PRIu64
" has been removed", dev
->ifname
,
1913 netdev_dpdk_get_virtio(const struct netdev_dpdk
*dev
)
1915 return ovsrcu_get(struct virtio_net
*, &dev
->virtio_dev
);
1919 * These callbacks allow virtio-net devices to be added to vhost ports when
1920 * configuration has been fully complete.
1922 static const struct virtio_net_device_ops virtio_net_device_ops
=
1924 .new_device
= new_device
,
1925 .destroy_device
= destroy_device
,
1929 start_vhost_loop(void *dummy OVS_UNUSED
)
1931 pthread_detach(pthread_self());
1932 /* Put the cuse thread into quiescent state. */
1933 ovsrcu_quiesce_start();
1934 rte_vhost_driver_session_start();
1939 dpdk_vhost_class_init(void)
1941 rte_vhost_driver_callback_register(&virtio_net_device_ops
);
1942 ovs_thread_create("vhost_thread", start_vhost_loop
, NULL
);
1947 dpdk_vhost_cuse_class_init(void)
1952 /* Register CUSE device to handle IOCTLs.
1953 * Unless otherwise specified on the vswitchd command line, cuse_dev_name
1954 * is set to vhost-net.
1956 err
= rte_vhost_driver_register(cuse_dev_name
);
1959 VLOG_ERR("CUSE device setup failure.");
1963 dpdk_vhost_class_init();
1968 dpdk_vhost_user_class_init(void)
1970 dpdk_vhost_class_init();
1975 dpdk_common_init(void)
1977 unixctl_command_register("netdev-dpdk/set-admin-state",
1978 "[netdev] up|down", 1, 2,
1979 netdev_dpdk_set_admin_state
, NULL
);
1981 ovs_thread_create("dpdk_watchdog", dpdk_watchdog
, NULL
);
1987 dpdk_ring_create(const char dev_name
[], unsigned int port_no
,
1988 unsigned int *eth_port_id
)
1990 struct dpdk_ring
*ivshmem
;
1994 ivshmem
= dpdk_rte_mzalloc(sizeof *ivshmem
);
1995 if (ivshmem
== NULL
) {
1999 /* XXX: Add support for multiquque ring. */
2000 err
= snprintf(ring_name
, 10, "%s_tx", dev_name
);
2005 /* Create single producer tx ring, netdev does explicit locking. */
2006 ivshmem
->cring_tx
= rte_ring_create(ring_name
, DPDK_RING_SIZE
, SOCKET0
,
2008 if (ivshmem
->cring_tx
== NULL
) {
2013 err
= snprintf(ring_name
, 10, "%s_rx", dev_name
);
2018 /* Create single consumer rx ring, netdev does explicit locking. */
2019 ivshmem
->cring_rx
= rte_ring_create(ring_name
, DPDK_RING_SIZE
, SOCKET0
,
2021 if (ivshmem
->cring_rx
== NULL
) {
2026 err
= rte_eth_from_rings(dev_name
, &ivshmem
->cring_rx
, 1,
2027 &ivshmem
->cring_tx
, 1, SOCKET0
);
2034 ivshmem
->user_port_id
= port_no
;
2035 ivshmem
->eth_port_id
= rte_eth_dev_count() - 1;
2036 list_push_back(&dpdk_ring_list
, &ivshmem
->list_node
);
2038 *eth_port_id
= ivshmem
->eth_port_id
;
2043 dpdk_ring_open(const char dev_name
[], unsigned int *eth_port_id
) OVS_REQUIRES(dpdk_mutex
)
2045 struct dpdk_ring
*ivshmem
;
2046 unsigned int port_no
;
2049 /* Names always start with "dpdkr" */
2050 err
= dpdk_dev_parse_name(dev_name
, "dpdkr", &port_no
);
2055 /* look through our list to find the device */
2056 LIST_FOR_EACH (ivshmem
, list_node
, &dpdk_ring_list
) {
2057 if (ivshmem
->user_port_id
== port_no
) {
2058 VLOG_INFO("Found dpdk ring device %s:", dev_name
);
2059 *eth_port_id
= ivshmem
->eth_port_id
; /* really all that is needed */
2063 /* Need to create the device rings */
2064 return dpdk_ring_create(dev_name
, port_no
, eth_port_id
);
2068 netdev_dpdk_ring_send(struct netdev
*netdev_
, int qid
,
2069 struct dp_packet
**pkts
, int cnt
, bool may_steal
)
2071 struct netdev_dpdk
*netdev
= netdev_dpdk_cast(netdev_
);
2074 /* When using 'dpdkr' and sending to a DPDK ring, we want to ensure that the
2075 * rss hash field is clear. This is because the same mbuf may be modified by
2076 * the consumer of the ring and return into the datapath without recalculating
2078 for (i
= 0; i
< cnt
; i
++) {
2079 dp_packet_rss_invalidate(pkts
[i
]);
2082 netdev_dpdk_send__(netdev
, qid
, pkts
, cnt
, may_steal
);
2087 netdev_dpdk_ring_construct(struct netdev
*netdev
)
2089 unsigned int port_no
= 0;
2092 if (rte_eal_init_ret
) {
2093 return rte_eal_init_ret
;
2096 ovs_mutex_lock(&dpdk_mutex
);
2098 err
= dpdk_ring_open(netdev
->name
, &port_no
);
2103 err
= netdev_dpdk_init(netdev
, port_no
, DPDK_DEV_ETH
);
2106 ovs_mutex_unlock(&dpdk_mutex
);
2110 #define NETDEV_DPDK_CLASS(NAME, INIT, CONSTRUCT, DESTRUCT, MULTIQ, SEND, \
2111 GET_CARRIER, GET_STATS, GET_FEATURES, GET_STATUS, RXQ_RECV) \
2115 NULL, /* netdev_dpdk_run */ \
2116 NULL, /* netdev_dpdk_wait */ \
2118 netdev_dpdk_alloc, \
2121 netdev_dpdk_dealloc, \
2122 netdev_dpdk_get_config, \
2123 NULL, /* netdev_dpdk_set_config */ \
2124 NULL, /* get_tunnel_config */ \
2125 NULL, /* build header */ \
2126 NULL, /* push header */ \
2127 NULL, /* pop header */ \
2128 netdev_dpdk_get_numa_id, /* get_numa_id */ \
2129 MULTIQ, /* set_multiq */ \
2132 NULL, /* send_wait */ \
2134 netdev_dpdk_set_etheraddr, \
2135 netdev_dpdk_get_etheraddr, \
2136 netdev_dpdk_get_mtu, \
2137 netdev_dpdk_set_mtu, \
2138 netdev_dpdk_get_ifindex, \
2140 netdev_dpdk_get_carrier_resets, \
2141 netdev_dpdk_set_miimon, \
2144 NULL, /* set_advertisements */ \
2146 NULL, /* set_policing */ \
2147 NULL, /* get_qos_types */ \
2148 NULL, /* get_qos_capabilities */ \
2149 NULL, /* get_qos */ \
2150 NULL, /* set_qos */ \
2151 NULL, /* get_queue */ \
2152 NULL, /* set_queue */ \
2153 NULL, /* delete_queue */ \
2154 NULL, /* get_queue_stats */ \
2155 NULL, /* queue_dump_start */ \
2156 NULL, /* queue_dump_next */ \
2157 NULL, /* queue_dump_done */ \
2158 NULL, /* dump_queue_stats */ \
2160 NULL, /* get_in4 */ \
2161 NULL, /* set_in4 */ \
2162 NULL, /* get_in6 */ \
2163 NULL, /* add_router */ \
2164 NULL, /* get_next_hop */ \
2166 NULL, /* arp_lookup */ \
2168 netdev_dpdk_update_flags, \
2170 netdev_dpdk_rxq_alloc, \
2171 netdev_dpdk_rxq_construct, \
2172 netdev_dpdk_rxq_destruct, \
2173 netdev_dpdk_rxq_dealloc, \
2175 NULL, /* rx_wait */ \
2176 NULL, /* rxq_drain */ \
2180 process_vhost_flags(char *flag
, char *default_val
, int size
,
2181 char **argv
, char **new_val
)
2185 /* Depending on which version of vhost is in use, process the vhost-specific
2186 * flag if it is provided on the vswitchd command line, otherwise resort to
2189 * For vhost-user: Process "-vhost_sock_dir" to set the custom location of
2190 * the vhost-user socket(s).
2191 * For vhost-cuse: Process "-cuse_dev_name" to set the custom name of the
2192 * vhost-cuse character device.
2194 if (!strcmp(argv
[1], flag
) && (strlen(argv
[2]) <= size
)) {
2196 *new_val
= xstrdup(argv
[2]);
2197 VLOG_INFO("User-provided %s in use: %s", flag
, *new_val
);
2199 VLOG_INFO("No %s provided - defaulting to %s", flag
, default_val
);
2200 *new_val
= default_val
;
2207 dpdk_init(int argc
, char **argv
)
2211 char *pragram_name
= argv
[0];
2213 if (argc
< 2 || strcmp(argv
[1], "--dpdk"))
2216 /* Remove the --dpdk argument from arg list.*/
2220 /* Reject --user option */
2222 for (i
= 0; i
< argc
; i
++) {
2223 if (!strcmp(argv
[i
], "--user")) {
2224 VLOG_ERR("Can not mix --dpdk and --user options, aborting.");
2229 if (process_vhost_flags("-cuse_dev_name", xstrdup("vhost-net"),
2230 PATH_MAX
, argv
, &cuse_dev_name
)) {
2232 if (process_vhost_flags("-vhost_sock_dir", xstrdup(ovs_rundir()),
2233 NAME_MAX
, argv
, &vhost_sock_dir
)) {
2237 err
= stat(vhost_sock_dir
, &s
);
2239 VLOG_ERR("vHostUser socket DIR '%s' does not exist.",
2244 /* Remove the vhost flag configuration parameters from the argument
2245 * list, so that the correct elements are passed to the DPDK
2246 * initialization function
2249 argv
+= 2; /* Increment by two to bypass the vhost flag arguments */
2253 /* Keep the program name argument as this is needed for call to
2256 argv
[0] = pragram_name
;
2258 /* Make sure things are initialized ... */
2259 result
= rte_eal_init(argc
, argv
);
2261 ovs_abort(result
, "Cannot init EAL");
2264 rte_memzone_dump(stdout
);
2265 rte_eal_init_ret
= 0;
2267 if (argc
> result
) {
2268 argv
[result
] = argv
[0];
2271 /* We are called from the main thread here */
2272 RTE_PER_LCORE(_lcore_id
) = NON_PMD_CORE_ID
;
2274 return result
+ 1 + base
;
2277 static const struct netdev_class dpdk_class
=
2281 netdev_dpdk_construct
,
2282 netdev_dpdk_destruct
,
2283 netdev_dpdk_set_multiq
,
2284 netdev_dpdk_eth_send
,
2285 netdev_dpdk_get_carrier
,
2286 netdev_dpdk_get_stats
,
2287 netdev_dpdk_get_features
,
2288 netdev_dpdk_get_status
,
2289 netdev_dpdk_rxq_recv
);
2291 static const struct netdev_class dpdk_ring_class
=
2295 netdev_dpdk_ring_construct
,
2296 netdev_dpdk_destruct
,
2297 netdev_dpdk_set_multiq
,
2298 netdev_dpdk_ring_send
,
2299 netdev_dpdk_get_carrier
,
2300 netdev_dpdk_get_stats
,
2301 netdev_dpdk_get_features
,
2302 netdev_dpdk_get_status
,
2303 netdev_dpdk_rxq_recv
);
2305 static const struct netdev_class OVS_UNUSED dpdk_vhost_cuse_class
=
2308 dpdk_vhost_cuse_class_init
,
2309 netdev_dpdk_vhost_cuse_construct
,
2310 netdev_dpdk_vhost_destruct
,
2311 netdev_dpdk_vhost_cuse_set_multiq
,
2312 netdev_dpdk_vhost_send
,
2313 netdev_dpdk_vhost_get_carrier
,
2314 netdev_dpdk_vhost_get_stats
,
2317 netdev_dpdk_vhost_rxq_recv
);
2319 static const struct netdev_class OVS_UNUSED dpdk_vhost_user_class
=
2322 dpdk_vhost_user_class_init
,
2323 netdev_dpdk_vhost_user_construct
,
2324 netdev_dpdk_vhost_destruct
,
2325 netdev_dpdk_vhost_set_multiq
,
2326 netdev_dpdk_vhost_send
,
2327 netdev_dpdk_vhost_get_carrier
,
2328 netdev_dpdk_vhost_get_stats
,
2331 netdev_dpdk_vhost_rxq_recv
);
2334 netdev_dpdk_register(void)
2336 static struct ovsthread_once once
= OVSTHREAD_ONCE_INITIALIZER
;
2338 if (rte_eal_init_ret
) {
2342 if (ovsthread_once_start(&once
)) {
2344 netdev_register_provider(&dpdk_class
);
2345 netdev_register_provider(&dpdk_ring_class
);
2347 netdev_register_provider(&dpdk_vhost_cuse_class
);
2349 netdev_register_provider(&dpdk_vhost_user_class
);
2351 ovsthread_once_done(&once
);
2356 pmd_thread_setaffinity_cpu(unsigned cpu
)
2362 CPU_SET(cpu
, &cpuset
);
2363 err
= pthread_setaffinity_np(pthread_self(), sizeof(cpu_set_t
), &cpuset
);
2365 VLOG_ERR("Thread affinity error %d",err
);
2368 /* NON_PMD_CORE_ID is reserved for use by non pmd threads. */
2369 ovs_assert(cpu
!= NON_PMD_CORE_ID
);
2370 RTE_PER_LCORE(_lcore_id
) = cpu
;
2376 dpdk_thread_is_pmd(void)
2378 return rte_lcore_id() != NON_PMD_CORE_ID
;