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 "dp-packet.h"
32 #include "dpif-netdev.h"
34 #include "netdev-dpdk.h"
35 #include "netdev-provider.h"
36 #include "netdev-vport.h"
38 #include "ofp-print.h"
40 #include "ovs-thread.h"
45 #include "unaligned.h"
48 #include "openvswitch/vlog.h"
50 #include "rte_config.h"
52 #include "rte_virtio_net.h"
54 VLOG_DEFINE_THIS_MODULE(dpdk
);
55 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(5, 20);
57 #define DPDK_PORT_WATCHDOG_INTERVAL 5
59 #define OVS_CACHE_LINE_SIZE CACHE_LINE_SIZE
60 #define OVS_VPORT_DPDK "ovs_dpdk"
63 * need to reserve tons of extra space in the mbufs so we can align the
64 * DMA addresses to 4KB.
67 #define MTU_TO_MAX_LEN(mtu) ((mtu) + ETHER_HDR_LEN + ETHER_CRC_LEN)
68 #define MBUF_SIZE(mtu) (MTU_TO_MAX_LEN(mtu) + (512) + \
69 sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM)
71 /* Max and min number of packets in the mempool. OVS tries to allocate a
72 * mempool with MAX_NB_MBUF: if this fails (because the system doesn't have
73 * enough hugepages) we keep halving the number until the allocation succeeds
74 * or we reach MIN_NB_MBUF */
76 #define MAX_NB_MBUF (4096 * 64)
77 #define MIN_NB_MBUF (4096 * 4)
78 #define MP_CACHE_SZ RTE_MEMPOOL_CACHE_MAX_SIZE
80 /* MAX_NB_MBUF can be divided by 2 many times, until MIN_NB_MBUF */
81 BUILD_ASSERT_DECL(MAX_NB_MBUF
% ROUND_DOWN_POW2(MAX_NB_MBUF
/MIN_NB_MBUF
) == 0);
83 /* The smallest possible NB_MBUF that we're going to try should be a multiple
84 * of MP_CACHE_SZ. This is advised by DPDK documentation. */
85 BUILD_ASSERT_DECL((MAX_NB_MBUF
/ ROUND_DOWN_POW2(MAX_NB_MBUF
/MIN_NB_MBUF
))
90 #define NIC_PORT_RX_Q_SIZE 2048 /* Size of Physical NIC RX Queue, Max (n+32<=4096)*/
91 #define NIC_PORT_TX_Q_SIZE 2048 /* Size of Physical NIC TX Queue, Max (n+32<=4096)*/
93 /* Character device cuse_dev_name. */
94 static char *cuse_dev_name
= NULL
;
97 * Maximum amount of time in micro seconds to try and enqueue to vhost.
99 #define VHOST_ENQ_RETRY_USECS 100
101 static const struct rte_eth_conf port_conf
= {
103 .mq_mode
= ETH_MQ_RX_RSS
,
105 .header_split
= 0, /* Header Split disabled */
106 .hw_ip_checksum
= 0, /* IP checksum offload disabled */
107 .hw_vlan_filter
= 0, /* VLAN filtering disabled */
108 .jumbo_frame
= 0, /* Jumbo Frame Support disabled */
114 .rss_hf
= ETH_RSS_IP
| ETH_RSS_UDP
| ETH_RSS_TCP
,
118 .mq_mode
= ETH_MQ_TX_NONE
,
122 enum { MAX_TX_QUEUE_LEN
= 384 };
123 enum { DPDK_RING_SIZE
= 256 };
124 BUILD_ASSERT_DECL(IS_POW2(DPDK_RING_SIZE
));
125 enum { DRAIN_TSC
= 200000ULL };
132 static int rte_eal_init_ret
= ENODEV
;
134 static struct ovs_mutex dpdk_mutex
= OVS_MUTEX_INITIALIZER
;
136 /* Contains all 'struct dpdk_dev's. */
137 static struct ovs_list dpdk_list
OVS_GUARDED_BY(dpdk_mutex
)
138 = OVS_LIST_INITIALIZER(&dpdk_list
);
140 static struct ovs_list dpdk_mp_list
OVS_GUARDED_BY(dpdk_mutex
)
141 = OVS_LIST_INITIALIZER(&dpdk_mp_list
);
143 /* This mutex must be used by non pmd threads when allocating or freeing
144 * mbufs through mempools. Since dpdk_queue_pkts() and dpdk_queue_flush() may
145 * use mempools, a non pmd thread should hold this mutex while calling them */
146 static struct ovs_mutex nonpmd_mempool_mutex
= OVS_MUTEX_INITIALIZER
;
149 struct rte_mempool
*mp
;
153 struct ovs_list list_node
OVS_GUARDED_BY(dpdk_mutex
);
156 /* There should be one 'struct dpdk_tx_queue' created for
158 struct dpdk_tx_queue
{
159 bool flush_tx
; /* Set to true to flush queue everytime */
160 /* pkts are queued. */
162 rte_spinlock_t tx_lock
; /* Protects the members and the NIC queue
163 * from concurrent access. It is used only
164 * if the queue is shared among different
165 * pmd threads (see 'txq_needs_locking'). */
167 struct rte_mbuf
*burst_pkts
[MAX_TX_QUEUE_LEN
];
170 /* dpdk has no way to remove dpdk ring ethernet devices
171 so we have to keep them around once they've been created
174 static struct ovs_list dpdk_ring_list
OVS_GUARDED_BY(dpdk_mutex
)
175 = OVS_LIST_INITIALIZER(&dpdk_ring_list
);
178 /* For the client rings */
179 struct rte_ring
*cring_tx
;
180 struct rte_ring
*cring_rx
;
181 int user_port_id
; /* User given port no, parsed from port name */
182 int eth_port_id
; /* ethernet device port id */
183 struct ovs_list list_node
OVS_GUARDED_BY(dpdk_mutex
);
190 enum dpdk_dev_type type
;
192 struct dpdk_tx_queue
*tx_q
;
194 struct ovs_mutex mutex
OVS_ACQ_AFTER(dpdk_mutex
);
196 struct dpdk_mp
*dpdk_mp
;
200 struct netdev_stats stats
;
202 rte_spinlock_t stats_lock
;
204 uint8_t hwaddr
[ETH_ADDR_LEN
];
205 enum netdev_flags flags
;
207 struct rte_eth_link link
;
210 /* The user might request more txqs than the NIC has. We remap those
211 * ('up.n_txq') on these ('real_n_txq').
212 * If the numbers match, 'txq_needs_locking' is false, otherwise it is
213 * true and we will take a spinlock on transmission */
215 bool txq_needs_locking
;
217 /* Spinlock for vhost transmission. Other DPDK devices use spinlocks in
219 rte_spinlock_t vhost_tx_lock
;
221 /* virtio-net structure for vhost device */
222 OVSRCU_TYPE(struct virtio_net
*) virtio_dev
;
225 struct ovs_list list_node
OVS_GUARDED_BY(dpdk_mutex
);
228 struct netdev_rxq_dpdk
{
229 struct netdev_rxq up
;
233 static bool thread_is_pmd(void);
235 static int netdev_dpdk_construct(struct netdev
*);
237 struct virtio_net
* netdev_dpdk_get_virtio(const struct netdev_dpdk
*dev
);
240 is_dpdk_class(const struct netdev_class
*class)
242 return class->construct
== netdev_dpdk_construct
;
245 /* XXX: use dpdk malloc for entire OVS. in fact huge page should be used
246 * for all other segments data, bss and text. */
249 dpdk_rte_mzalloc(size_t sz
)
253 ptr
= rte_zmalloc(OVS_VPORT_DPDK
, sz
, OVS_CACHE_LINE_SIZE
);
260 /* XXX this function should be called only by pmd threads (or by non pmd
261 * threads holding the nonpmd_mempool_mutex) */
263 free_dpdk_buf(struct dp_packet
*p
)
265 struct rte_mbuf
*pkt
= (struct rte_mbuf
*) p
;
267 rte_pktmbuf_free_seg(pkt
);
271 __rte_pktmbuf_init(struct rte_mempool
*mp
,
272 void *opaque_arg OVS_UNUSED
,
274 unsigned i OVS_UNUSED
)
276 struct rte_mbuf
*m
= _m
;
277 uint32_t buf_len
= mp
->elt_size
- sizeof(struct dp_packet
);
279 RTE_MBUF_ASSERT(mp
->elt_size
>= sizeof(struct dp_packet
));
281 memset(m
, 0, mp
->elt_size
);
283 /* start of buffer is just after mbuf structure */
284 m
->buf_addr
= (char *)m
+ sizeof(struct dp_packet
);
285 m
->buf_physaddr
= rte_mempool_virt2phy(mp
, m
) +
286 sizeof(struct dp_packet
);
287 m
->buf_len
= (uint16_t)buf_len
;
289 /* keep some headroom between start of buffer and data */
290 m
->data_off
= RTE_MIN(RTE_PKTMBUF_HEADROOM
, m
->buf_len
);
292 /* init some constant fields */
299 ovs_rte_pktmbuf_init(struct rte_mempool
*mp
,
300 void *opaque_arg OVS_UNUSED
,
302 unsigned i OVS_UNUSED
)
304 struct rte_mbuf
*m
= _m
;
306 __rte_pktmbuf_init(mp
, opaque_arg
, _m
, i
);
308 dp_packet_init_dpdk((struct dp_packet
*) m
, m
->buf_len
);
311 static struct dpdk_mp
*
312 dpdk_mp_get(int socket_id
, int mtu
) OVS_REQUIRES(dpdk_mutex
)
314 struct dpdk_mp
*dmp
= NULL
;
315 char mp_name
[RTE_MEMPOOL_NAMESIZE
];
318 LIST_FOR_EACH (dmp
, list_node
, &dpdk_mp_list
) {
319 if (dmp
->socket_id
== socket_id
&& dmp
->mtu
== mtu
) {
325 dmp
= dpdk_rte_mzalloc(sizeof *dmp
);
326 dmp
->socket_id
= socket_id
;
330 mp_size
= MAX_NB_MBUF
;
332 if (snprintf(mp_name
, RTE_MEMPOOL_NAMESIZE
, "ovs_mp_%d_%d_%u",
333 dmp
->mtu
, dmp
->socket_id
, mp_size
) < 0) {
337 dmp
->mp
= rte_mempool_create(mp_name
, mp_size
, MBUF_SIZE(mtu
),
339 sizeof(struct rte_pktmbuf_pool_private
),
340 rte_pktmbuf_pool_init
, NULL
,
341 ovs_rte_pktmbuf_init
, NULL
,
343 } while (!dmp
->mp
&& rte_errno
== ENOMEM
&& (mp_size
/= 2) >= MIN_NB_MBUF
);
345 if (dmp
->mp
== NULL
) {
348 VLOG_DBG("Allocated \"%s\" mempool with %u mbufs", mp_name
, mp_size
);
351 list_push_back(&dpdk_mp_list
, &dmp
->list_node
);
356 dpdk_mp_put(struct dpdk_mp
*dmp
)
364 ovs_assert(dmp
->refcount
>= 0);
367 /* I could not find any API to destroy mp. */
368 if (dmp
->refcount
== 0) {
369 list_delete(dmp
->list_node
);
370 /* destroy mp-pool. */
376 check_link_status(struct netdev_dpdk
*dev
)
378 struct rte_eth_link link
;
380 rte_eth_link_get_nowait(dev
->port_id
, &link
);
382 if (dev
->link
.link_status
!= link
.link_status
) {
383 netdev_change_seq_changed(&dev
->up
);
385 dev
->link_reset_cnt
++;
387 if (dev
->link
.link_status
) {
388 VLOG_DBG_RL(&rl
, "Port %d Link Up - speed %u Mbps - %s",
389 dev
->port_id
, (unsigned)dev
->link
.link_speed
,
390 (dev
->link
.link_duplex
== ETH_LINK_FULL_DUPLEX
) ?
391 ("full-duplex") : ("half-duplex"));
393 VLOG_DBG_RL(&rl
, "Port %d Link Down", dev
->port_id
);
399 dpdk_watchdog(void *dummy OVS_UNUSED
)
401 struct netdev_dpdk
*dev
;
403 pthread_detach(pthread_self());
406 ovs_mutex_lock(&dpdk_mutex
);
407 LIST_FOR_EACH (dev
, list_node
, &dpdk_list
) {
408 ovs_mutex_lock(&dev
->mutex
);
409 check_link_status(dev
);
410 ovs_mutex_unlock(&dev
->mutex
);
412 ovs_mutex_unlock(&dpdk_mutex
);
413 xsleep(DPDK_PORT_WATCHDOG_INTERVAL
);
420 dpdk_eth_dev_init(struct netdev_dpdk
*dev
) OVS_REQUIRES(dpdk_mutex
)
422 struct rte_pktmbuf_pool_private
*mbp_priv
;
423 struct rte_eth_dev_info info
;
424 struct ether_addr eth_addr
;
428 if (dev
->port_id
< 0 || dev
->port_id
>= rte_eth_dev_count()) {
432 rte_eth_dev_info_get(dev
->port_id
, &info
);
433 dev
->up
.n_rxq
= MIN(info
.max_rx_queues
, dev
->up
.n_rxq
);
434 dev
->real_n_txq
= MIN(info
.max_tx_queues
, dev
->up
.n_txq
);
436 diag
= rte_eth_dev_configure(dev
->port_id
, dev
->up
.n_rxq
, dev
->real_n_txq
,
439 VLOG_ERR("eth dev config error %d. rxq:%d txq:%d", diag
, dev
->up
.n_rxq
,
444 for (i
= 0; i
< dev
->real_n_txq
; i
++) {
445 diag
= rte_eth_tx_queue_setup(dev
->port_id
, i
, NIC_PORT_TX_Q_SIZE
,
446 dev
->socket_id
, NULL
);
448 VLOG_ERR("eth dev tx queue setup error %d",diag
);
453 for (i
= 0; i
< dev
->up
.n_rxq
; i
++) {
454 diag
= rte_eth_rx_queue_setup(dev
->port_id
, i
, NIC_PORT_RX_Q_SIZE
,
456 NULL
, dev
->dpdk_mp
->mp
);
458 VLOG_ERR("eth dev rx queue setup error %d",diag
);
463 diag
= rte_eth_dev_start(dev
->port_id
);
465 VLOG_ERR("eth dev start error %d",diag
);
469 rte_eth_promiscuous_enable(dev
->port_id
);
470 rte_eth_allmulticast_enable(dev
->port_id
);
472 memset(ð_addr
, 0x0, sizeof(eth_addr
));
473 rte_eth_macaddr_get(dev
->port_id
, ð_addr
);
474 VLOG_INFO_RL(&rl
, "Port %d: "ETH_ADDR_FMT
"",
475 dev
->port_id
, ETH_ADDR_ARGS(eth_addr
.addr_bytes
));
477 memcpy(dev
->hwaddr
, eth_addr
.addr_bytes
, ETH_ADDR_LEN
);
478 rte_eth_link_get_nowait(dev
->port_id
, &dev
->link
);
480 mbp_priv
= rte_mempool_get_priv(dev
->dpdk_mp
->mp
);
481 dev
->buf_size
= mbp_priv
->mbuf_data_room_size
- RTE_PKTMBUF_HEADROOM
;
483 dev
->flags
= NETDEV_UP
| NETDEV_PROMISC
;
487 static struct netdev_dpdk
*
488 netdev_dpdk_cast(const struct netdev
*netdev
)
490 return CONTAINER_OF(netdev
, struct netdev_dpdk
, up
);
493 static struct netdev
*
494 netdev_dpdk_alloc(void)
496 struct netdev_dpdk
*netdev
= dpdk_rte_mzalloc(sizeof *netdev
);
501 netdev_dpdk_alloc_txq(struct netdev_dpdk
*netdev
, unsigned int n_txqs
)
505 netdev
->tx_q
= dpdk_rte_mzalloc(n_txqs
* sizeof *netdev
->tx_q
);
506 for (i
= 0; i
< n_txqs
; i
++) {
507 int numa_id
= ovs_numa_get_numa_id(i
);
509 if (!netdev
->txq_needs_locking
) {
510 /* Each index is considered as a cpu core id, since there should
511 * be one tx queue for each cpu core. If the corresponding core
512 * is not on the same numa node as 'netdev', flags the
514 netdev
->tx_q
[i
].flush_tx
= netdev
->socket_id
== numa_id
;
516 /* Queues are shared among CPUs. Always flush */
517 netdev
->tx_q
[i
].flush_tx
= true;
519 rte_spinlock_init(&netdev
->tx_q
[i
].tx_lock
);
524 netdev_dpdk_init(struct netdev
*netdev_
, unsigned int port_no
,
525 enum dpdk_dev_type type
)
526 OVS_REQUIRES(dpdk_mutex
)
528 struct netdev_dpdk
*netdev
= netdev_dpdk_cast(netdev_
);
532 ovs_mutex_init(&netdev
->mutex
);
533 ovs_mutex_lock(&netdev
->mutex
);
535 rte_spinlock_init(&netdev
->stats_lock
);
537 /* If the 'sid' is negative, it means that the kernel fails
538 * to obtain the pci numa info. In that situation, always
540 if (type
== DPDK_DEV_ETH
) {
541 sid
= rte_eth_dev_socket_id(port_no
);
543 sid
= rte_lcore_to_socket_id(rte_get_master_lcore());
546 netdev
->socket_id
= sid
< 0 ? SOCKET0
: sid
;
547 netdev
->port_id
= port_no
;
550 netdev
->mtu
= ETHER_MTU
;
551 netdev
->max_packet_len
= MTU_TO_MAX_LEN(netdev
->mtu
);
553 netdev
->dpdk_mp
= dpdk_mp_get(netdev
->socket_id
, netdev
->mtu
);
554 if (!netdev
->dpdk_mp
) {
559 netdev_
->n_txq
= NR_QUEUE
;
560 netdev_
->n_rxq
= NR_QUEUE
;
561 netdev
->real_n_txq
= NR_QUEUE
;
563 if (type
== DPDK_DEV_ETH
) {
564 netdev_dpdk_alloc_txq(netdev
, NR_QUEUE
);
565 err
= dpdk_eth_dev_init(netdev
);
571 list_push_back(&dpdk_list
, &netdev
->list_node
);
575 rte_free(netdev
->tx_q
);
577 ovs_mutex_unlock(&netdev
->mutex
);
582 dpdk_dev_parse_name(const char dev_name
[], const char prefix
[],
583 unsigned int *port_no
)
587 if (strncmp(dev_name
, prefix
, strlen(prefix
))) {
591 cport
= dev_name
+ strlen(prefix
);
592 *port_no
= strtol(cport
, NULL
, 0); /* string must be null terminated */
597 netdev_dpdk_vhost_construct(struct netdev
*netdev_
)
599 struct netdev_dpdk
*netdev
= netdev_dpdk_cast(netdev_
);
602 if (rte_eal_init_ret
) {
603 return rte_eal_init_ret
;
606 ovs_mutex_lock(&dpdk_mutex
);
607 err
= netdev_dpdk_init(netdev_
, -1, DPDK_DEV_VHOST
);
608 ovs_mutex_unlock(&dpdk_mutex
);
610 rte_spinlock_init(&netdev
->vhost_tx_lock
);
616 netdev_dpdk_construct(struct netdev
*netdev
)
618 unsigned int port_no
;
621 if (rte_eal_init_ret
) {
622 return rte_eal_init_ret
;
625 /* Names always start with "dpdk" */
626 err
= dpdk_dev_parse_name(netdev
->name
, "dpdk", &port_no
);
631 ovs_mutex_lock(&dpdk_mutex
);
632 err
= netdev_dpdk_init(netdev
, port_no
, DPDK_DEV_ETH
);
633 ovs_mutex_unlock(&dpdk_mutex
);
638 netdev_dpdk_destruct(struct netdev
*netdev_
)
640 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev_
);
642 ovs_mutex_lock(&dev
->mutex
);
643 rte_eth_dev_stop(dev
->port_id
);
644 ovs_mutex_unlock(&dev
->mutex
);
646 ovs_mutex_lock(&dpdk_mutex
);
648 list_remove(&dev
->list_node
);
649 dpdk_mp_put(dev
->dpdk_mp
);
650 ovs_mutex_unlock(&dpdk_mutex
);
654 netdev_dpdk_vhost_destruct(struct netdev
*netdev_
)
656 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev_
);
658 /* Can't remove a port while a guest is attached to it. */
659 if (netdev_dpdk_get_virtio(dev
) != NULL
) {
660 VLOG_ERR("Can not remove port, vhost device still attached");
664 ovs_mutex_lock(&dpdk_mutex
);
665 list_remove(&dev
->list_node
);
666 dpdk_mp_put(dev
->dpdk_mp
);
667 ovs_mutex_unlock(&dpdk_mutex
);
671 netdev_dpdk_dealloc(struct netdev
*netdev_
)
673 struct netdev_dpdk
*netdev
= netdev_dpdk_cast(netdev_
);
679 netdev_dpdk_get_config(const struct netdev
*netdev_
, struct smap
*args
)
681 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev_
);
683 ovs_mutex_lock(&dev
->mutex
);
685 smap_add_format(args
, "configured_rx_queues", "%d", netdev_
->n_rxq
);
686 smap_add_format(args
, "requested_tx_queues", "%d", netdev_
->n_txq
);
687 smap_add_format(args
, "configured_tx_queues", "%d", dev
->real_n_txq
);
688 ovs_mutex_unlock(&dev
->mutex
);
694 netdev_dpdk_get_numa_id(const struct netdev
*netdev_
)
696 struct netdev_dpdk
*netdev
= netdev_dpdk_cast(netdev_
);
698 return netdev
->socket_id
;
701 /* Sets the number of tx queues and rx queues for the dpdk interface.
702 * If the configuration fails, do not try restoring its old configuration
703 * and just returns the error. */
705 netdev_dpdk_set_multiq(struct netdev
*netdev_
, unsigned int n_txq
,
708 struct netdev_dpdk
*netdev
= netdev_dpdk_cast(netdev_
);
711 if (netdev
->up
.n_txq
== n_txq
&& netdev
->up
.n_rxq
== n_rxq
) {
715 ovs_mutex_lock(&dpdk_mutex
);
716 ovs_mutex_lock(&netdev
->mutex
);
718 rte_eth_dev_stop(netdev
->port_id
);
720 netdev
->up
.n_txq
= n_txq
;
721 netdev
->up
.n_rxq
= n_rxq
;
723 rte_free(netdev
->tx_q
);
724 err
= dpdk_eth_dev_init(netdev
);
725 netdev_dpdk_alloc_txq(netdev
, netdev
->real_n_txq
);
727 netdev
->txq_needs_locking
= netdev
->real_n_txq
!= netdev
->up
.n_txq
;
729 ovs_mutex_unlock(&netdev
->mutex
);
730 ovs_mutex_unlock(&dpdk_mutex
);
736 netdev_dpdk_vhost_set_multiq(struct netdev
*netdev_
, unsigned int n_txq
,
739 struct netdev_dpdk
*netdev
= netdev_dpdk_cast(netdev_
);
742 if (netdev
->up
.n_txq
== n_txq
&& netdev
->up
.n_rxq
== n_rxq
) {
746 ovs_mutex_lock(&dpdk_mutex
);
747 ovs_mutex_lock(&netdev
->mutex
);
749 netdev
->up
.n_txq
= n_txq
;
750 netdev
->real_n_txq
= 1;
751 netdev
->up
.n_rxq
= 1;
753 ovs_mutex_unlock(&netdev
->mutex
);
754 ovs_mutex_unlock(&dpdk_mutex
);
759 static struct netdev_rxq
*
760 netdev_dpdk_rxq_alloc(void)
762 struct netdev_rxq_dpdk
*rx
= dpdk_rte_mzalloc(sizeof *rx
);
767 static struct netdev_rxq_dpdk
*
768 netdev_rxq_dpdk_cast(const struct netdev_rxq
*rx
)
770 return CONTAINER_OF(rx
, struct netdev_rxq_dpdk
, up
);
774 netdev_dpdk_rxq_construct(struct netdev_rxq
*rxq_
)
776 struct netdev_rxq_dpdk
*rx
= netdev_rxq_dpdk_cast(rxq_
);
777 struct netdev_dpdk
*netdev
= netdev_dpdk_cast(rx
->up
.netdev
);
779 ovs_mutex_lock(&netdev
->mutex
);
780 rx
->port_id
= netdev
->port_id
;
781 ovs_mutex_unlock(&netdev
->mutex
);
787 netdev_dpdk_rxq_destruct(struct netdev_rxq
*rxq_ OVS_UNUSED
)
792 netdev_dpdk_rxq_dealloc(struct netdev_rxq
*rxq_
)
794 struct netdev_rxq_dpdk
*rx
= netdev_rxq_dpdk_cast(rxq_
);
800 dpdk_queue_flush__(struct netdev_dpdk
*dev
, int qid
)
802 struct dpdk_tx_queue
*txq
= &dev
->tx_q
[qid
];
805 while (nb_tx
!= txq
->count
) {
808 ret
= rte_eth_tx_burst(dev
->port_id
, qid
, txq
->burst_pkts
+ nb_tx
,
817 if (OVS_UNLIKELY(nb_tx
!= txq
->count
)) {
818 /* free buffers, which we couldn't transmit, one at a time (each
819 * packet could come from a different mempool) */
822 for (i
= nb_tx
; i
< txq
->count
; i
++) {
823 rte_pktmbuf_free_seg(txq
->burst_pkts
[i
]);
825 rte_spinlock_lock(&dev
->stats_lock
);
826 dev
->stats
.tx_dropped
+= txq
->count
-nb_tx
;
827 rte_spinlock_unlock(&dev
->stats_lock
);
831 txq
->tsc
= rte_get_timer_cycles();
835 dpdk_queue_flush(struct netdev_dpdk
*dev
, int qid
)
837 struct dpdk_tx_queue
*txq
= &dev
->tx_q
[qid
];
839 if (txq
->count
== 0) {
842 dpdk_queue_flush__(dev
, qid
);
846 is_vhost_running(struct virtio_net
*dev
)
848 return (dev
!= NULL
&& (dev
->flags
& VIRTIO_DEV_RUNNING
));
852 * The receive path for the vhost port is the TX path out from guest.
855 netdev_dpdk_vhost_rxq_recv(struct netdev_rxq
*rxq_
,
856 struct dp_packet
**packets
, int *c
)
858 struct netdev_rxq_dpdk
*rx
= netdev_rxq_dpdk_cast(rxq_
);
859 struct netdev
*netdev
= rx
->up
.netdev
;
860 struct netdev_dpdk
*vhost_dev
= netdev_dpdk_cast(netdev
);
861 struct virtio_net
*virtio_dev
= netdev_dpdk_get_virtio(vhost_dev
);
865 if (OVS_UNLIKELY(!is_vhost_running(virtio_dev
))) {
869 nb_rx
= rte_vhost_dequeue_burst(virtio_dev
, qid
,
870 vhost_dev
->dpdk_mp
->mp
,
871 (struct rte_mbuf
**)packets
,
877 rte_spinlock_lock(&vhost_dev
->stats_lock
);
878 vhost_dev
->stats
.rx_packets
+= (uint64_t)nb_rx
;
879 rte_spinlock_unlock(&vhost_dev
->stats_lock
);
886 netdev_dpdk_rxq_recv(struct netdev_rxq
*rxq_
, struct dp_packet
**packets
,
889 struct netdev_rxq_dpdk
*rx
= netdev_rxq_dpdk_cast(rxq_
);
890 struct netdev
*netdev
= rx
->up
.netdev
;
891 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev
);
894 /* There is only one tx queue for this core. Do not flush other
896 if (rxq_
->queue_id
== rte_lcore_id()) {
897 dpdk_queue_flush(dev
, rxq_
->queue_id
);
900 nb_rx
= rte_eth_rx_burst(rx
->port_id
, rxq_
->queue_id
,
901 (struct rte_mbuf
**) packets
,
913 __netdev_dpdk_vhost_send(struct netdev
*netdev
, struct dp_packet
**pkts
,
914 int cnt
, bool may_steal
)
916 struct netdev_dpdk
*vhost_dev
= netdev_dpdk_cast(netdev
);
917 struct virtio_net
*virtio_dev
= netdev_dpdk_get_virtio(vhost_dev
);
918 struct rte_mbuf
**cur_pkts
= (struct rte_mbuf
**) pkts
;
919 unsigned int total_pkts
= cnt
;
922 if (OVS_UNLIKELY(!is_vhost_running(virtio_dev
))) {
923 rte_spinlock_lock(&vhost_dev
->stats_lock
);
924 vhost_dev
->stats
.tx_dropped
+= cnt
;
925 rte_spinlock_unlock(&vhost_dev
->stats_lock
);
929 /* There is vHost TX single queue, So we need to lock it for TX. */
930 rte_spinlock_lock(&vhost_dev
->vhost_tx_lock
);
933 unsigned int tx_pkts
;
935 tx_pkts
= rte_vhost_enqueue_burst(virtio_dev
, VIRTIO_RXQ
,
937 if (OVS_LIKELY(tx_pkts
)) {
938 /* Packets have been sent.*/
940 /* Prepare for possible next iteration.*/
941 cur_pkts
= &cur_pkts
[tx_pkts
];
943 uint64_t timeout
= VHOST_ENQ_RETRY_USECS
* rte_get_timer_hz() / 1E6
;
944 unsigned int expired
= 0;
947 start
= rte_get_timer_cycles();
951 * Unable to enqueue packets to vhost interface.
952 * Check available entries before retrying.
954 while (!rte_vring_available_entries(virtio_dev
, VIRTIO_RXQ
)) {
955 if (OVS_UNLIKELY((rte_get_timer_cycles() - start
) > timeout
)) {
961 /* break out of main loop. */
966 rte_spinlock_unlock(&vhost_dev
->vhost_tx_lock
);
968 rte_spinlock_lock(&vhost_dev
->stats_lock
);
969 vhost_dev
->stats
.tx_packets
+= (total_pkts
- cnt
);
970 vhost_dev
->stats
.tx_dropped
+= cnt
;
971 rte_spinlock_unlock(&vhost_dev
->stats_lock
);
977 for (i
= 0; i
< total_pkts
; i
++) {
978 dp_packet_delete(pkts
[i
]);
984 dpdk_queue_pkts(struct netdev_dpdk
*dev
, int qid
,
985 struct rte_mbuf
**pkts
, int cnt
)
987 struct dpdk_tx_queue
*txq
= &dev
->tx_q
[qid
];
993 int freeslots
= MAX_TX_QUEUE_LEN
- txq
->count
;
994 int tocopy
= MIN(freeslots
, cnt
-i
);
996 memcpy(&txq
->burst_pkts
[txq
->count
], &pkts
[i
],
997 tocopy
* sizeof (struct rte_mbuf
*));
999 txq
->count
+= tocopy
;
1002 if (txq
->count
== MAX_TX_QUEUE_LEN
|| txq
->flush_tx
) {
1003 dpdk_queue_flush__(dev
, qid
);
1005 diff_tsc
= rte_get_timer_cycles() - txq
->tsc
;
1006 if (diff_tsc
>= DRAIN_TSC
) {
1007 dpdk_queue_flush__(dev
, qid
);
1012 /* Tx function. Transmit packets indefinitely */
1014 dpdk_do_tx_copy(struct netdev
*netdev
, int qid
, struct dp_packet
**pkts
,
1016 OVS_NO_THREAD_SAFETY_ANALYSIS
1018 #if !defined(__CHECKER__) && !defined(_WIN32)
1019 const size_t PKT_ARRAY_SIZE
= cnt
;
1021 /* Sparse or MSVC doesn't like variable length array. */
1022 enum { PKT_ARRAY_SIZE
= NETDEV_MAX_BURST
};
1024 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev
);
1025 struct rte_mbuf
*mbufs
[PKT_ARRAY_SIZE
];
1030 /* If we are on a non pmd thread we have to use the mempool mutex, because
1031 * every non pmd thread shares the same mempool cache */
1033 if (!thread_is_pmd()) {
1034 ovs_mutex_lock(&nonpmd_mempool_mutex
);
1037 for (i
= 0; i
< cnt
; i
++) {
1038 int size
= dp_packet_size(pkts
[i
]);
1040 if (OVS_UNLIKELY(size
> dev
->max_packet_len
)) {
1041 VLOG_WARN_RL(&rl
, "Too big size %d max_packet_len %d",
1042 (int)size
, dev
->max_packet_len
);
1048 mbufs
[newcnt
] = rte_pktmbuf_alloc(dev
->dpdk_mp
->mp
);
1050 if (!mbufs
[newcnt
]) {
1055 /* We have to do a copy for now */
1056 memcpy(rte_pktmbuf_mtod(mbufs
[newcnt
], void *), dp_packet_data(pkts
[i
]), size
);
1058 rte_pktmbuf_data_len(mbufs
[newcnt
]) = size
;
1059 rte_pktmbuf_pkt_len(mbufs
[newcnt
]) = size
;
1064 if (OVS_UNLIKELY(dropped
)) {
1065 rte_spinlock_lock(&dev
->stats_lock
);
1066 dev
->stats
.tx_dropped
+= dropped
;
1067 rte_spinlock_unlock(&dev
->stats_lock
);
1070 if (dev
->type
== DPDK_DEV_VHOST
) {
1071 __netdev_dpdk_vhost_send(netdev
, (struct dp_packet
**) mbufs
, newcnt
, true);
1073 dpdk_queue_pkts(dev
, qid
, mbufs
, newcnt
);
1074 dpdk_queue_flush(dev
, qid
);
1077 if (!thread_is_pmd()) {
1078 ovs_mutex_unlock(&nonpmd_mempool_mutex
);
1083 netdev_dpdk_vhost_send(struct netdev
*netdev
, int qid OVS_UNUSED
, struct dp_packet
**pkts
,
1084 int cnt
, bool may_steal
)
1086 if (OVS_UNLIKELY(pkts
[0]->source
!= DPBUF_DPDK
)) {
1089 dpdk_do_tx_copy(netdev
, qid
, pkts
, cnt
);
1091 for (i
= 0; i
< cnt
; i
++) {
1092 dp_packet_delete(pkts
[i
]);
1096 __netdev_dpdk_vhost_send(netdev
, pkts
, cnt
, may_steal
);
1102 netdev_dpdk_send__(struct netdev_dpdk
*dev
, int qid
,
1103 struct dp_packet
**pkts
, int cnt
, bool may_steal
)
1107 if (OVS_UNLIKELY(dev
->txq_needs_locking
)) {
1108 qid
= qid
% dev
->real_n_txq
;
1109 rte_spinlock_lock(&dev
->tx_q
[qid
].tx_lock
);
1112 if (OVS_UNLIKELY(!may_steal
||
1113 pkts
[0]->source
!= DPBUF_DPDK
)) {
1114 struct netdev
*netdev
= &dev
->up
;
1116 dpdk_do_tx_copy(netdev
, qid
, pkts
, cnt
);
1119 for (i
= 0; i
< cnt
; i
++) {
1120 dp_packet_delete(pkts
[i
]);
1124 int next_tx_idx
= 0;
1127 for (i
= 0; i
< cnt
; i
++) {
1128 int size
= dp_packet_size(pkts
[i
]);
1130 if (OVS_UNLIKELY(size
> dev
->max_packet_len
)) {
1131 if (next_tx_idx
!= i
) {
1132 dpdk_queue_pkts(dev
, qid
,
1133 (struct rte_mbuf
**)&pkts
[next_tx_idx
],
1137 VLOG_WARN_RL(&rl
, "Too big size %d max_packet_len %d",
1138 (int)size
, dev
->max_packet_len
);
1140 dp_packet_delete(pkts
[i
]);
1142 next_tx_idx
= i
+ 1;
1145 if (next_tx_idx
!= cnt
) {
1146 dpdk_queue_pkts(dev
, qid
,
1147 (struct rte_mbuf
**)&pkts
[next_tx_idx
],
1151 if (OVS_UNLIKELY(dropped
)) {
1152 rte_spinlock_lock(&dev
->stats_lock
);
1153 dev
->stats
.tx_dropped
+= dropped
;
1154 rte_spinlock_unlock(&dev
->stats_lock
);
1158 if (OVS_UNLIKELY(dev
->txq_needs_locking
)) {
1159 rte_spinlock_unlock(&dev
->tx_q
[qid
].tx_lock
);
1164 netdev_dpdk_eth_send(struct netdev
*netdev
, int qid
,
1165 struct dp_packet
**pkts
, int cnt
, bool may_steal
)
1167 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev
);
1169 netdev_dpdk_send__(dev
, qid
, pkts
, cnt
, may_steal
);
1174 netdev_dpdk_set_etheraddr(struct netdev
*netdev
,
1175 const uint8_t mac
[ETH_ADDR_LEN
])
1177 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev
);
1179 ovs_mutex_lock(&dev
->mutex
);
1180 if (!eth_addr_equals(dev
->hwaddr
, mac
)) {
1181 memcpy(dev
->hwaddr
, mac
, ETH_ADDR_LEN
);
1182 netdev_change_seq_changed(netdev
);
1184 ovs_mutex_unlock(&dev
->mutex
);
1190 netdev_dpdk_get_etheraddr(const struct netdev
*netdev
,
1191 uint8_t mac
[ETH_ADDR_LEN
])
1193 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev
);
1195 ovs_mutex_lock(&dev
->mutex
);
1196 memcpy(mac
, dev
->hwaddr
, ETH_ADDR_LEN
);
1197 ovs_mutex_unlock(&dev
->mutex
);
1203 netdev_dpdk_get_mtu(const struct netdev
*netdev
, int *mtup
)
1205 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev
);
1207 ovs_mutex_lock(&dev
->mutex
);
1209 ovs_mutex_unlock(&dev
->mutex
);
1215 netdev_dpdk_set_mtu(const struct netdev
*netdev
, int mtu
)
1217 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev
);
1219 struct dpdk_mp
*old_mp
;
1222 ovs_mutex_lock(&dpdk_mutex
);
1223 ovs_mutex_lock(&dev
->mutex
);
1224 if (dev
->mtu
== mtu
) {
1229 mp
= dpdk_mp_get(dev
->socket_id
, dev
->mtu
);
1235 rte_eth_dev_stop(dev
->port_id
);
1238 old_mp
= dev
->dpdk_mp
;
1241 dev
->max_packet_len
= MTU_TO_MAX_LEN(dev
->mtu
);
1243 err
= dpdk_eth_dev_init(dev
);
1247 dev
->dpdk_mp
= old_mp
;
1248 dev
->max_packet_len
= MTU_TO_MAX_LEN(dev
->mtu
);
1249 dpdk_eth_dev_init(dev
);
1253 dpdk_mp_put(old_mp
);
1254 netdev_change_seq_changed(netdev
);
1256 ovs_mutex_unlock(&dev
->mutex
);
1257 ovs_mutex_unlock(&dpdk_mutex
);
1262 netdev_dpdk_get_carrier(const struct netdev
*netdev_
, bool *carrier
);
1265 netdev_dpdk_vhost_get_stats(const struct netdev
*netdev
,
1266 struct netdev_stats
*stats
)
1268 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev
);
1270 ovs_mutex_lock(&dev
->mutex
);
1271 memset(stats
, 0, sizeof(*stats
));
1272 /* Unsupported Stats */
1273 stats
->rx_errors
= UINT64_MAX
;
1274 stats
->tx_errors
= UINT64_MAX
;
1275 stats
->multicast
= UINT64_MAX
;
1276 stats
->collisions
= UINT64_MAX
;
1277 stats
->rx_crc_errors
= UINT64_MAX
;
1278 stats
->rx_fifo_errors
= UINT64_MAX
;
1279 stats
->rx_frame_errors
= UINT64_MAX
;
1280 stats
->rx_length_errors
= UINT64_MAX
;
1281 stats
->rx_missed_errors
= UINT64_MAX
;
1282 stats
->rx_over_errors
= UINT64_MAX
;
1283 stats
->tx_aborted_errors
= UINT64_MAX
;
1284 stats
->tx_carrier_errors
= UINT64_MAX
;
1285 stats
->tx_errors
= UINT64_MAX
;
1286 stats
->tx_fifo_errors
= UINT64_MAX
;
1287 stats
->tx_heartbeat_errors
= UINT64_MAX
;
1288 stats
->tx_window_errors
= UINT64_MAX
;
1289 stats
->rx_bytes
+= UINT64_MAX
;
1290 stats
->rx_dropped
+= UINT64_MAX
;
1291 stats
->tx_bytes
+= UINT64_MAX
;
1293 rte_spinlock_lock(&dev
->stats_lock
);
1294 /* Supported Stats */
1295 stats
->rx_packets
+= dev
->stats
.rx_packets
;
1296 stats
->tx_packets
+= dev
->stats
.tx_packets
;
1297 stats
->tx_dropped
+= dev
->stats
.tx_dropped
;
1298 rte_spinlock_unlock(&dev
->stats_lock
);
1299 ovs_mutex_unlock(&dev
->mutex
);
1305 netdev_dpdk_get_stats(const struct netdev
*netdev
, struct netdev_stats
*stats
)
1307 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev
);
1308 struct rte_eth_stats rte_stats
;
1311 netdev_dpdk_get_carrier(netdev
, &gg
);
1312 ovs_mutex_lock(&dev
->mutex
);
1313 rte_eth_stats_get(dev
->port_id
, &rte_stats
);
1315 memset(stats
, 0, sizeof(*stats
));
1317 stats
->rx_packets
= rte_stats
.ipackets
;
1318 stats
->tx_packets
= rte_stats
.opackets
;
1319 stats
->rx_bytes
= rte_stats
.ibytes
;
1320 stats
->tx_bytes
= rte_stats
.obytes
;
1321 stats
->rx_errors
= rte_stats
.ierrors
;
1322 stats
->tx_errors
= rte_stats
.oerrors
;
1323 stats
->multicast
= rte_stats
.imcasts
;
1325 rte_spinlock_lock(&dev
->stats_lock
);
1326 stats
->tx_dropped
= dev
->stats
.tx_dropped
;
1327 rte_spinlock_unlock(&dev
->stats_lock
);
1328 ovs_mutex_unlock(&dev
->mutex
);
1334 netdev_dpdk_get_features(const struct netdev
*netdev_
,
1335 enum netdev_features
*current
,
1336 enum netdev_features
*advertised OVS_UNUSED
,
1337 enum netdev_features
*supported OVS_UNUSED
,
1338 enum netdev_features
*peer OVS_UNUSED
)
1340 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev_
);
1341 struct rte_eth_link link
;
1343 ovs_mutex_lock(&dev
->mutex
);
1345 ovs_mutex_unlock(&dev
->mutex
);
1347 if (link
.link_duplex
== ETH_LINK_AUTONEG_DUPLEX
) {
1348 if (link
.link_speed
== ETH_LINK_SPEED_AUTONEG
) {
1349 *current
= NETDEV_F_AUTONEG
;
1351 } else if (link
.link_duplex
== ETH_LINK_HALF_DUPLEX
) {
1352 if (link
.link_speed
== ETH_LINK_SPEED_10
) {
1353 *current
= NETDEV_F_10MB_HD
;
1355 if (link
.link_speed
== ETH_LINK_SPEED_100
) {
1356 *current
= NETDEV_F_100MB_HD
;
1358 if (link
.link_speed
== ETH_LINK_SPEED_1000
) {
1359 *current
= NETDEV_F_1GB_HD
;
1361 } else if (link
.link_duplex
== ETH_LINK_FULL_DUPLEX
) {
1362 if (link
.link_speed
== ETH_LINK_SPEED_10
) {
1363 *current
= NETDEV_F_10MB_FD
;
1365 if (link
.link_speed
== ETH_LINK_SPEED_100
) {
1366 *current
= NETDEV_F_100MB_FD
;
1368 if (link
.link_speed
== ETH_LINK_SPEED_1000
) {
1369 *current
= NETDEV_F_1GB_FD
;
1371 if (link
.link_speed
== ETH_LINK_SPEED_10000
) {
1372 *current
= NETDEV_F_10GB_FD
;
1380 netdev_dpdk_get_ifindex(const struct netdev
*netdev
)
1382 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev
);
1385 ovs_mutex_lock(&dev
->mutex
);
1386 ifindex
= dev
->port_id
;
1387 ovs_mutex_unlock(&dev
->mutex
);
1393 netdev_dpdk_get_carrier(const struct netdev
*netdev_
, bool *carrier
)
1395 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev_
);
1397 ovs_mutex_lock(&dev
->mutex
);
1398 check_link_status(dev
);
1399 *carrier
= dev
->link
.link_status
;
1401 ovs_mutex_unlock(&dev
->mutex
);
1407 netdev_dpdk_vhost_get_carrier(const struct netdev
*netdev_
, bool *carrier
)
1409 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev_
);
1410 struct virtio_net
*virtio_dev
= netdev_dpdk_get_virtio(dev
);
1412 ovs_mutex_lock(&dev
->mutex
);
1414 if (is_vhost_running(virtio_dev
)) {
1420 ovs_mutex_unlock(&dev
->mutex
);
1425 static long long int
1426 netdev_dpdk_get_carrier_resets(const struct netdev
*netdev_
)
1428 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev_
);
1429 long long int carrier_resets
;
1431 ovs_mutex_lock(&dev
->mutex
);
1432 carrier_resets
= dev
->link_reset_cnt
;
1433 ovs_mutex_unlock(&dev
->mutex
);
1435 return carrier_resets
;
1439 netdev_dpdk_set_miimon(struct netdev
*netdev_ OVS_UNUSED
,
1440 long long int interval OVS_UNUSED
)
1446 netdev_dpdk_update_flags__(struct netdev_dpdk
*dev
,
1447 enum netdev_flags off
, enum netdev_flags on
,
1448 enum netdev_flags
*old_flagsp
) OVS_REQUIRES(dev
->mutex
)
1452 if ((off
| on
) & ~(NETDEV_UP
| NETDEV_PROMISC
)) {
1456 *old_flagsp
= dev
->flags
;
1460 if (dev
->flags
== *old_flagsp
) {
1464 if (dev
->type
== DPDK_DEV_ETH
) {
1465 if (dev
->flags
& NETDEV_UP
) {
1466 err
= rte_eth_dev_start(dev
->port_id
);
1471 if (dev
->flags
& NETDEV_PROMISC
) {
1472 rte_eth_promiscuous_enable(dev
->port_id
);
1475 if (!(dev
->flags
& NETDEV_UP
)) {
1476 rte_eth_dev_stop(dev
->port_id
);
1484 netdev_dpdk_update_flags(struct netdev
*netdev_
,
1485 enum netdev_flags off
, enum netdev_flags on
,
1486 enum netdev_flags
*old_flagsp
)
1488 struct netdev_dpdk
*netdev
= netdev_dpdk_cast(netdev_
);
1491 ovs_mutex_lock(&netdev
->mutex
);
1492 error
= netdev_dpdk_update_flags__(netdev
, off
, on
, old_flagsp
);
1493 ovs_mutex_unlock(&netdev
->mutex
);
1499 netdev_dpdk_get_status(const struct netdev
*netdev_
, struct smap
*args
)
1501 struct netdev_dpdk
*dev
= netdev_dpdk_cast(netdev_
);
1502 struct rte_eth_dev_info dev_info
;
1504 if (dev
->port_id
< 0)
1507 ovs_mutex_lock(&dev
->mutex
);
1508 rte_eth_dev_info_get(dev
->port_id
, &dev_info
);
1509 ovs_mutex_unlock(&dev
->mutex
);
1511 smap_add_format(args
, "driver_name", "%s", dev_info
.driver_name
);
1513 smap_add_format(args
, "port_no", "%d", dev
->port_id
);
1514 smap_add_format(args
, "numa_id", "%d", rte_eth_dev_socket_id(dev
->port_id
));
1515 smap_add_format(args
, "driver_name", "%s", dev_info
.driver_name
);
1516 smap_add_format(args
, "min_rx_bufsize", "%u", dev_info
.min_rx_bufsize
);
1517 smap_add_format(args
, "max_rx_pktlen", "%u", dev_info
.max_rx_pktlen
);
1518 smap_add_format(args
, "max_rx_queues", "%u", dev_info
.max_rx_queues
);
1519 smap_add_format(args
, "max_tx_queues", "%u", dev_info
.max_tx_queues
);
1520 smap_add_format(args
, "max_mac_addrs", "%u", dev_info
.max_mac_addrs
);
1521 smap_add_format(args
, "max_hash_mac_addrs", "%u", dev_info
.max_hash_mac_addrs
);
1522 smap_add_format(args
, "max_vfs", "%u", dev_info
.max_vfs
);
1523 smap_add_format(args
, "max_vmdq_pools", "%u", dev_info
.max_vmdq_pools
);
1525 smap_add_format(args
, "pci-vendor_id", "0x%u", dev_info
.pci_dev
->id
.vendor_id
);
1526 smap_add_format(args
, "pci-device_id", "0x%x", dev_info
.pci_dev
->id
.device_id
);
1532 netdev_dpdk_set_admin_state__(struct netdev_dpdk
*dev
, bool admin_state
)
1533 OVS_REQUIRES(dev
->mutex
)
1535 enum netdev_flags old_flags
;
1538 netdev_dpdk_update_flags__(dev
, 0, NETDEV_UP
, &old_flags
);
1540 netdev_dpdk_update_flags__(dev
, NETDEV_UP
, 0, &old_flags
);
1545 netdev_dpdk_set_admin_state(struct unixctl_conn
*conn
, int argc
,
1546 const char *argv
[], void *aux OVS_UNUSED
)
1550 if (!strcasecmp(argv
[argc
- 1], "up")) {
1552 } else if ( !strcasecmp(argv
[argc
- 1], "down")) {
1555 unixctl_command_reply_error(conn
, "Invalid Admin State");
1560 struct netdev
*netdev
= netdev_from_name(argv
[1]);
1561 if (netdev
&& is_dpdk_class(netdev
->netdev_class
)) {
1562 struct netdev_dpdk
*dpdk_dev
= netdev_dpdk_cast(netdev
);
1564 ovs_mutex_lock(&dpdk_dev
->mutex
);
1565 netdev_dpdk_set_admin_state__(dpdk_dev
, up
);
1566 ovs_mutex_unlock(&dpdk_dev
->mutex
);
1568 netdev_close(netdev
);
1570 unixctl_command_reply_error(conn
, "Not a DPDK Interface");
1571 netdev_close(netdev
);
1575 struct netdev_dpdk
*netdev
;
1577 ovs_mutex_lock(&dpdk_mutex
);
1578 LIST_FOR_EACH (netdev
, list_node
, &dpdk_list
) {
1579 ovs_mutex_lock(&netdev
->mutex
);
1580 netdev_dpdk_set_admin_state__(netdev
, up
);
1581 ovs_mutex_unlock(&netdev
->mutex
);
1583 ovs_mutex_unlock(&dpdk_mutex
);
1585 unixctl_command_reply(conn
, "OK");
1589 * Set virtqueue flags so that we do not receive interrupts.
1592 set_irq_status(struct virtio_net
*dev
)
1594 dev
->virtqueue
[VIRTIO_RXQ
]->used
->flags
= VRING_USED_F_NO_NOTIFY
;
1595 dev
->virtqueue
[VIRTIO_TXQ
]->used
->flags
= VRING_USED_F_NO_NOTIFY
;
1599 * A new virtio-net device is added to a vhost port.
1602 new_device(struct virtio_net
*dev
)
1604 struct netdev_dpdk
*netdev
;
1605 bool exists
= false;
1607 ovs_mutex_lock(&dpdk_mutex
);
1608 /* Add device to the vhost port with the same name as that passed down. */
1609 LIST_FOR_EACH(netdev
, list_node
, &dpdk_list
) {
1610 if (strncmp(dev
->ifname
, netdev
->up
.name
, IFNAMSIZ
) == 0) {
1611 ovs_mutex_lock(&netdev
->mutex
);
1612 ovsrcu_set(&netdev
->virtio_dev
, dev
);
1613 ovs_mutex_unlock(&netdev
->mutex
);
1615 dev
->flags
|= VIRTIO_DEV_RUNNING
;
1616 /* Disable notifications. */
1617 set_irq_status(dev
);
1621 ovs_mutex_unlock(&dpdk_mutex
);
1624 VLOG_INFO("vHost Device '%s' (%ld) can't be added - name not found",
1625 dev
->ifname
, dev
->device_fh
);
1630 VLOG_INFO("vHost Device '%s' (%ld) has been added",
1631 dev
->ifname
, dev
->device_fh
);
1636 * Remove a virtio-net device from the specific vhost port. Use dev->remove
1637 * flag to stop any more packets from being sent or received to/from a VM and
1638 * ensure all currently queued packets have been sent/received before removing
1642 destroy_device(volatile struct virtio_net
*dev
)
1644 struct netdev_dpdk
*vhost_dev
;
1646 ovs_mutex_lock(&dpdk_mutex
);
1647 LIST_FOR_EACH (vhost_dev
, list_node
, &dpdk_list
) {
1648 if (netdev_dpdk_get_virtio(vhost_dev
) == dev
) {
1650 ovs_mutex_lock(&vhost_dev
->mutex
);
1651 dev
->flags
&= ~VIRTIO_DEV_RUNNING
;
1652 ovsrcu_set(&vhost_dev
->virtio_dev
, NULL
);
1653 ovs_mutex_unlock(&vhost_dev
->mutex
);
1656 * Wait for other threads to quiesce before
1657 * setting the virtio_dev to NULL.
1659 ovsrcu_synchronize();
1661 * As call to ovsrcu_synchronize() will end the quiescent state,
1662 * put thread back into quiescent state before returning.
1664 ovsrcu_quiesce_start();
1667 ovs_mutex_unlock(&dpdk_mutex
);
1669 VLOG_INFO("vHost Device '%s' (%ld) has been removed",
1670 dev
->ifname
, dev
->device_fh
);
1674 netdev_dpdk_get_virtio(const struct netdev_dpdk
*dev
)
1676 return ovsrcu_get(struct virtio_net
*, &dev
->virtio_dev
);
1680 * These callbacks allow virtio-net devices to be added to vhost ports when
1681 * configuration has been fully complete.
1683 static const struct virtio_net_device_ops virtio_net_device_ops
=
1685 .new_device
= new_device
,
1686 .destroy_device
= destroy_device
,
1690 start_cuse_session_loop(void *dummy OVS_UNUSED
)
1692 pthread_detach(pthread_self());
1693 /* Put the cuse thread into quiescent state. */
1694 ovsrcu_quiesce_start();
1695 rte_vhost_driver_session_start();
1700 dpdk_vhost_class_init(void)
1704 rte_vhost_driver_callback_register(&virtio_net_device_ops
);
1706 /* Register CUSE device to handle IOCTLs.
1707 * Unless otherwise specified on the vswitchd command line, cuse_dev_name
1708 * is set to vhost-net.
1710 err
= rte_vhost_driver_register(cuse_dev_name
);
1713 VLOG_ERR("CUSE device setup failure.");
1717 ovs_thread_create("cuse_thread", start_cuse_session_loop
, NULL
);
1722 dpdk_common_init(void)
1724 unixctl_command_register("netdev-dpdk/set-admin-state",
1725 "[netdev] up|down", 1, 2,
1726 netdev_dpdk_set_admin_state
, NULL
);
1728 ovs_thread_create("dpdk_watchdog", dpdk_watchdog
, NULL
);
1734 dpdk_ring_create(const char dev_name
[], unsigned int port_no
,
1735 unsigned int *eth_port_id
)
1737 struct dpdk_ring
*ivshmem
;
1741 ivshmem
= dpdk_rte_mzalloc(sizeof *ivshmem
);
1742 if (ivshmem
== NULL
) {
1746 /* XXX: Add support for multiquque ring. */
1747 err
= snprintf(ring_name
, 10, "%s_tx", dev_name
);
1752 /* Create single consumer/producer rings, netdev does explicit locking. */
1753 ivshmem
->cring_tx
= rte_ring_create(ring_name
, DPDK_RING_SIZE
, SOCKET0
,
1754 RING_F_SP_ENQ
| RING_F_SC_DEQ
);
1755 if (ivshmem
->cring_tx
== NULL
) {
1760 err
= snprintf(ring_name
, 10, "%s_rx", dev_name
);
1765 /* Create single consumer/producer rings, netdev does explicit locking. */
1766 ivshmem
->cring_rx
= rte_ring_create(ring_name
, DPDK_RING_SIZE
, SOCKET0
,
1767 RING_F_SP_ENQ
| RING_F_SC_DEQ
);
1768 if (ivshmem
->cring_rx
== NULL
) {
1773 err
= rte_eth_from_rings(dev_name
, &ivshmem
->cring_rx
, 1,
1774 &ivshmem
->cring_tx
, 1, SOCKET0
);
1781 ivshmem
->user_port_id
= port_no
;
1782 ivshmem
->eth_port_id
= rte_eth_dev_count() - 1;
1783 list_push_back(&dpdk_ring_list
, &ivshmem
->list_node
);
1785 *eth_port_id
= ivshmem
->eth_port_id
;
1790 dpdk_ring_open(const char dev_name
[], unsigned int *eth_port_id
) OVS_REQUIRES(dpdk_mutex
)
1792 struct dpdk_ring
*ivshmem
;
1793 unsigned int port_no
;
1796 /* Names always start with "dpdkr" */
1797 err
= dpdk_dev_parse_name(dev_name
, "dpdkr", &port_no
);
1802 /* look through our list to find the device */
1803 LIST_FOR_EACH (ivshmem
, list_node
, &dpdk_ring_list
) {
1804 if (ivshmem
->user_port_id
== port_no
) {
1805 VLOG_INFO("Found dpdk ring device %s:", dev_name
);
1806 *eth_port_id
= ivshmem
->eth_port_id
; /* really all that is needed */
1810 /* Need to create the device rings */
1811 return dpdk_ring_create(dev_name
, port_no
, eth_port_id
);
1815 netdev_dpdk_ring_send(struct netdev
*netdev_
, int qid
,
1816 struct dp_packet
**pkts
, int cnt
, bool may_steal
)
1818 struct netdev_dpdk
*netdev
= netdev_dpdk_cast(netdev_
);
1821 /* When using 'dpdkr' and sending to a DPDK ring, we want to ensure that the
1822 * rss hash field is clear. This is because the same mbuf may be modified by
1823 * the consumer of the ring and return into the datapath without recalculating
1825 for (i
= 0; i
< cnt
; i
++) {
1826 dp_packet_set_rss_hash(pkts
[i
], 0);
1829 netdev_dpdk_send__(netdev
, qid
, pkts
, cnt
, may_steal
);
1834 netdev_dpdk_ring_construct(struct netdev
*netdev
)
1836 unsigned int port_no
= 0;
1839 if (rte_eal_init_ret
) {
1840 return rte_eal_init_ret
;
1843 ovs_mutex_lock(&dpdk_mutex
);
1845 err
= dpdk_ring_open(netdev
->name
, &port_no
);
1850 err
= netdev_dpdk_init(netdev
, port_no
, DPDK_DEV_ETH
);
1853 ovs_mutex_unlock(&dpdk_mutex
);
1857 #define NETDEV_DPDK_CLASS(NAME, INIT, CONSTRUCT, DESTRUCT, MULTIQ, SEND, \
1858 GET_CARRIER, GET_STATS, GET_FEATURES, GET_STATUS, RXQ_RECV) \
1862 NULL, /* netdev_dpdk_run */ \
1863 NULL, /* netdev_dpdk_wait */ \
1865 netdev_dpdk_alloc, \
1868 netdev_dpdk_dealloc, \
1869 netdev_dpdk_get_config, \
1870 NULL, /* netdev_dpdk_set_config */ \
1871 NULL, /* get_tunnel_config */ \
1872 NULL, /* build header */ \
1873 NULL, /* push header */ \
1874 NULL, /* pop header */ \
1875 netdev_dpdk_get_numa_id, /* get_numa_id */ \
1876 MULTIQ, /* set_multiq */ \
1879 NULL, /* send_wait */ \
1881 netdev_dpdk_set_etheraddr, \
1882 netdev_dpdk_get_etheraddr, \
1883 netdev_dpdk_get_mtu, \
1884 netdev_dpdk_set_mtu, \
1885 netdev_dpdk_get_ifindex, \
1887 netdev_dpdk_get_carrier_resets, \
1888 netdev_dpdk_set_miimon, \
1891 NULL, /* set_advertisements */ \
1893 NULL, /* set_policing */ \
1894 NULL, /* get_qos_types */ \
1895 NULL, /* get_qos_capabilities */ \
1896 NULL, /* get_qos */ \
1897 NULL, /* set_qos */ \
1898 NULL, /* get_queue */ \
1899 NULL, /* set_queue */ \
1900 NULL, /* delete_queue */ \
1901 NULL, /* get_queue_stats */ \
1902 NULL, /* queue_dump_start */ \
1903 NULL, /* queue_dump_next */ \
1904 NULL, /* queue_dump_done */ \
1905 NULL, /* dump_queue_stats */ \
1907 NULL, /* get_in4 */ \
1908 NULL, /* set_in4 */ \
1909 NULL, /* get_in6 */ \
1910 NULL, /* add_router */ \
1911 NULL, /* get_next_hop */ \
1913 NULL, /* arp_lookup */ \
1915 netdev_dpdk_update_flags, \
1917 netdev_dpdk_rxq_alloc, \
1918 netdev_dpdk_rxq_construct, \
1919 netdev_dpdk_rxq_destruct, \
1920 netdev_dpdk_rxq_dealloc, \
1922 NULL, /* rx_wait */ \
1923 NULL, /* rxq_drain */ \
1927 dpdk_init(int argc
, char **argv
)
1931 char *pragram_name
= argv
[0];
1933 if (argc
< 2 || strcmp(argv
[1], "--dpdk"))
1936 /* Remove the --dpdk argument from arg list.*/
1940 /* If the cuse_dev_name parameter has been provided, set 'cuse_dev_name' to
1941 * this string if it meets the correct criteria. Otherwise, set it to the
1942 * default (vhost-net).
1944 if (!strcmp(argv
[1], "--cuse_dev_name") &&
1945 (strlen(argv
[2]) <= NAME_MAX
)) {
1947 cuse_dev_name
= strdup(argv
[2]);
1949 /* Remove the cuse_dev_name configuration parameters from the argument
1950 * list, so that the correct elements are passed to the DPDK
1951 * initialization function
1954 argv
+= 2; /* Increment by two to bypass the cuse_dev_name arguments */
1957 VLOG_ERR("User-provided cuse_dev_name in use: /dev/%s", cuse_dev_name
);
1959 cuse_dev_name
= "vhost-net";
1960 VLOG_INFO("No cuse_dev_name provided - defaulting to /dev/vhost-net");
1963 /* Keep the program name argument as this is needed for call to
1966 argv
[0] = pragram_name
;
1968 /* Make sure things are initialized ... */
1969 result
= rte_eal_init(argc
, argv
);
1971 ovs_abort(result
, "Cannot init EAL");
1974 rte_memzone_dump(stdout
);
1975 rte_eal_init_ret
= 0;
1977 if (argc
> result
) {
1978 argv
[result
] = argv
[0];
1981 /* We are called from the main thread here */
1982 RTE_PER_LCORE(_lcore_id
) = NON_PMD_CORE_ID
;
1984 return result
+ 1 + base
;
1987 static const struct netdev_class dpdk_class
=
1991 netdev_dpdk_construct
,
1992 netdev_dpdk_destruct
,
1993 netdev_dpdk_set_multiq
,
1994 netdev_dpdk_eth_send
,
1995 netdev_dpdk_get_carrier
,
1996 netdev_dpdk_get_stats
,
1997 netdev_dpdk_get_features
,
1998 netdev_dpdk_get_status
,
1999 netdev_dpdk_rxq_recv
);
2001 static const struct netdev_class dpdk_ring_class
=
2005 netdev_dpdk_ring_construct
,
2006 netdev_dpdk_destruct
,
2007 netdev_dpdk_set_multiq
,
2008 netdev_dpdk_ring_send
,
2009 netdev_dpdk_get_carrier
,
2010 netdev_dpdk_get_stats
,
2011 netdev_dpdk_get_features
,
2012 netdev_dpdk_get_status
,
2013 netdev_dpdk_rxq_recv
);
2015 static const struct netdev_class dpdk_vhost_class
=
2018 dpdk_vhost_class_init
,
2019 netdev_dpdk_vhost_construct
,
2020 netdev_dpdk_vhost_destruct
,
2021 netdev_dpdk_vhost_set_multiq
,
2022 netdev_dpdk_vhost_send
,
2023 netdev_dpdk_vhost_get_carrier
,
2024 netdev_dpdk_vhost_get_stats
,
2027 netdev_dpdk_vhost_rxq_recv
);
2030 netdev_dpdk_register(void)
2032 static struct ovsthread_once once
= OVSTHREAD_ONCE_INITIALIZER
;
2034 if (rte_eal_init_ret
) {
2038 if (ovsthread_once_start(&once
)) {
2040 netdev_register_provider(&dpdk_class
);
2041 netdev_register_provider(&dpdk_ring_class
);
2042 netdev_register_provider(&dpdk_vhost_class
);
2043 ovsthread_once_done(&once
);
2048 pmd_thread_setaffinity_cpu(unsigned cpu
)
2054 CPU_SET(cpu
, &cpuset
);
2055 err
= pthread_setaffinity_np(pthread_self(), sizeof(cpu_set_t
), &cpuset
);
2057 VLOG_ERR("Thread affinity error %d",err
);
2060 /* NON_PMD_CORE_ID is reserved for use by non pmd threads. */
2061 ovs_assert(cpu
!= NON_PMD_CORE_ID
);
2062 RTE_PER_LCORE(_lcore_id
) = cpu
;
2070 return rte_lcore_id() != NON_PMD_CORE_ID
;