1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2014 Intel Corporation
6 #include <rte_ethdev.h>
7 #include <rte_ethdev_driver.h>
9 #include <rte_bus_pci.h>
10 #include <rte_malloc.h>
11 #include <rte_memcpy.h>
12 #include <rte_memory.h>
15 #include "virtual_pmd.h"
17 #define MAX_PKT_BURST 512
19 static const char *virtual_ethdev_driver_name = "Virtual PMD";
21 struct virtual_ethdev_private {
22 struct eth_dev_ops dev_ops;
23 struct rte_eth_stats eth_stats;
25 struct rte_ring *rx_queue;
26 struct rte_ring *tx_queue;
28 int tx_burst_fail_count;
31 struct virtual_ethdev_queue {
37 virtual_ethdev_start_success(struct rte_eth_dev *eth_dev __rte_unused)
39 eth_dev->data->dev_started = 1;
45 virtual_ethdev_start_fail(struct rte_eth_dev *eth_dev __rte_unused)
47 eth_dev->data->dev_started = 0;
51 static void virtual_ethdev_stop(struct rte_eth_dev *eth_dev __rte_unused)
54 struct virtual_ethdev_private *prv = eth_dev->data->dev_private;
56 eth_dev->data->dev_link.link_status = ETH_LINK_DOWN;
57 eth_dev->data->dev_started = 0;
58 while (rte_ring_dequeue(prv->rx_queue, &pkt) != -ENOENT)
59 rte_pktmbuf_free(pkt);
61 while (rte_ring_dequeue(prv->tx_queue, &pkt) != -ENOENT)
62 rte_pktmbuf_free(pkt);
66 virtual_ethdev_close(struct rte_eth_dev *dev __rte_unused)
70 virtual_ethdev_configure_success(struct rte_eth_dev *dev __rte_unused)
76 virtual_ethdev_configure_fail(struct rte_eth_dev *dev __rte_unused)
82 virtual_ethdev_info_get(struct rte_eth_dev *dev __rte_unused,
83 struct rte_eth_dev_info *dev_info)
85 dev_info->driver_name = virtual_ethdev_driver_name;
86 dev_info->max_mac_addrs = 1;
88 dev_info->max_rx_pktlen = (uint32_t)2048;
90 dev_info->max_rx_queues = (uint16_t)128;
91 dev_info->max_tx_queues = (uint16_t)512;
93 dev_info->min_rx_bufsize = 0;
97 virtual_ethdev_rx_queue_setup_success(struct rte_eth_dev *dev,
98 uint16_t rx_queue_id, uint16_t nb_rx_desc __rte_unused,
99 unsigned int socket_id,
100 const struct rte_eth_rxconf *rx_conf __rte_unused,
101 struct rte_mempool *mb_pool __rte_unused)
103 struct virtual_ethdev_queue *rx_q;
105 rx_q = (struct virtual_ethdev_queue *)rte_zmalloc_socket(NULL,
106 sizeof(struct virtual_ethdev_queue), 0, socket_id);
111 rx_q->port_id = dev->data->port_id;
112 rx_q->queue_id = rx_queue_id;
114 dev->data->rx_queues[rx_queue_id] = rx_q;
120 virtual_ethdev_rx_queue_setup_fail(struct rte_eth_dev *dev __rte_unused,
121 uint16_t rx_queue_id __rte_unused, uint16_t nb_rx_desc __rte_unused,
122 unsigned int socket_id __rte_unused,
123 const struct rte_eth_rxconf *rx_conf __rte_unused,
124 struct rte_mempool *mb_pool __rte_unused)
130 virtual_ethdev_tx_queue_setup_success(struct rte_eth_dev *dev,
131 uint16_t tx_queue_id, uint16_t nb_tx_desc __rte_unused,
132 unsigned int socket_id,
133 const struct rte_eth_txconf *tx_conf __rte_unused)
135 struct virtual_ethdev_queue *tx_q;
137 tx_q = (struct virtual_ethdev_queue *)rte_zmalloc_socket(NULL,
138 sizeof(struct virtual_ethdev_queue), 0, socket_id);
143 tx_q->port_id = dev->data->port_id;
144 tx_q->queue_id = tx_queue_id;
146 dev->data->tx_queues[tx_queue_id] = tx_q;
152 virtual_ethdev_tx_queue_setup_fail(struct rte_eth_dev *dev __rte_unused,
153 uint16_t tx_queue_id __rte_unused, uint16_t nb_tx_desc __rte_unused,
154 unsigned int socket_id __rte_unused,
155 const struct rte_eth_txconf *tx_conf __rte_unused)
161 virtual_ethdev_rx_queue_release(void *q __rte_unused)
166 virtual_ethdev_tx_queue_release(void *q __rte_unused)
171 virtual_ethdev_link_update_success(struct rte_eth_dev *bonded_eth_dev,
172 int wait_to_complete __rte_unused)
174 if (!bonded_eth_dev->data->dev_started)
175 bonded_eth_dev->data->dev_link.link_status = ETH_LINK_DOWN;
181 virtual_ethdev_link_update_fail(struct rte_eth_dev *bonded_eth_dev __rte_unused,
182 int wait_to_complete __rte_unused)
188 virtual_ethdev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
190 struct virtual_ethdev_private *dev_private = dev->data->dev_private;
193 rte_memcpy(stats, &dev_private->eth_stats, sizeof(*stats));
199 virtual_ethdev_stats_reset(struct rte_eth_dev *dev)
201 struct virtual_ethdev_private *dev_private = dev->data->dev_private;
204 while (rte_ring_dequeue(dev_private->tx_queue, &pkt) == -ENOBUFS)
205 rte_pktmbuf_free(pkt);
207 /* Reset internal statistics */
208 memset(&dev_private->eth_stats, 0, sizeof(dev_private->eth_stats));
212 virtual_ethdev_promiscuous_mode_enable(struct rte_eth_dev *dev __rte_unused)
216 virtual_ethdev_promiscuous_mode_disable(struct rte_eth_dev *dev __rte_unused)
220 virtual_ethdev_mac_address_set(__rte_unused struct rte_eth_dev *dev,
221 __rte_unused struct ether_addr *addr)
225 static const struct eth_dev_ops virtual_ethdev_default_dev_ops = {
226 .dev_configure = virtual_ethdev_configure_success,
227 .dev_start = virtual_ethdev_start_success,
228 .dev_stop = virtual_ethdev_stop,
229 .dev_close = virtual_ethdev_close,
230 .dev_infos_get = virtual_ethdev_info_get,
231 .rx_queue_setup = virtual_ethdev_rx_queue_setup_success,
232 .tx_queue_setup = virtual_ethdev_tx_queue_setup_success,
233 .rx_queue_release = virtual_ethdev_rx_queue_release,
234 .tx_queue_release = virtual_ethdev_tx_queue_release,
235 .link_update = virtual_ethdev_link_update_success,
236 .mac_addr_set = virtual_ethdev_mac_address_set,
237 .stats_get = virtual_ethdev_stats_get,
238 .stats_reset = virtual_ethdev_stats_reset,
239 .promiscuous_enable = virtual_ethdev_promiscuous_mode_enable,
240 .promiscuous_disable = virtual_ethdev_promiscuous_mode_disable
244 virtual_ethdev_start_fn_set_success(uint16_t port_id, uint8_t success)
246 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
247 struct virtual_ethdev_private *dev_private = dev->data->dev_private;
248 struct eth_dev_ops *dev_ops = &dev_private->dev_ops;
251 dev_ops->dev_start = virtual_ethdev_start_success;
253 dev_ops->dev_start = virtual_ethdev_start_fail;
258 virtual_ethdev_configure_fn_set_success(uint16_t port_id, uint8_t success)
260 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
261 struct virtual_ethdev_private *dev_private = dev->data->dev_private;
262 struct eth_dev_ops *dev_ops = &dev_private->dev_ops;
265 dev_ops->dev_configure = virtual_ethdev_configure_success;
267 dev_ops->dev_configure = virtual_ethdev_configure_fail;
271 virtual_ethdev_rx_queue_setup_fn_set_success(uint16_t port_id, uint8_t success)
273 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
274 struct virtual_ethdev_private *dev_private = dev->data->dev_private;
275 struct eth_dev_ops *dev_ops = &dev_private->dev_ops;
278 dev_ops->rx_queue_setup = virtual_ethdev_rx_queue_setup_success;
280 dev_ops->rx_queue_setup = virtual_ethdev_rx_queue_setup_fail;
284 virtual_ethdev_tx_queue_setup_fn_set_success(uint16_t port_id, uint8_t success)
286 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
287 struct virtual_ethdev_private *dev_private = dev->data->dev_private;
288 struct eth_dev_ops *dev_ops = &dev_private->dev_ops;
291 dev_ops->tx_queue_setup = virtual_ethdev_tx_queue_setup_success;
293 dev_ops->tx_queue_setup = virtual_ethdev_tx_queue_setup_fail;
297 virtual_ethdev_link_update_fn_set_success(uint16_t port_id, uint8_t success)
299 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
300 struct virtual_ethdev_private *dev_private = dev->data->dev_private;
301 struct eth_dev_ops *dev_ops = &dev_private->dev_ops;
304 dev_ops->link_update = virtual_ethdev_link_update_success;
306 dev_ops->link_update = virtual_ethdev_link_update_fail;
311 virtual_ethdev_rx_burst_success(void *queue __rte_unused,
312 struct rte_mbuf **bufs,
315 struct rte_eth_dev *vrtl_eth_dev;
316 struct virtual_ethdev_queue *pq_map;
317 struct virtual_ethdev_private *dev_private;
321 pq_map = (struct virtual_ethdev_queue *)queue;
322 vrtl_eth_dev = &rte_eth_devices[pq_map->port_id];
323 dev_private = vrtl_eth_dev->data->dev_private;
325 rx_count = rte_ring_dequeue_burst(dev_private->rx_queue, (void **) bufs,
328 /* increments ipackets count */
329 dev_private->eth_stats.ipackets += rx_count;
331 /* increments ibytes count */
332 for (i = 0; i < rx_count; i++)
333 dev_private->eth_stats.ibytes += rte_pktmbuf_pkt_len(bufs[i]);
339 virtual_ethdev_rx_burst_fail(void *queue __rte_unused,
340 struct rte_mbuf **bufs __rte_unused,
341 uint16_t nb_pkts __rte_unused)
347 virtual_ethdev_tx_burst_success(void *queue, struct rte_mbuf **bufs,
350 struct virtual_ethdev_queue *tx_q = queue;
352 struct rte_eth_dev *vrtl_eth_dev;
353 struct virtual_ethdev_private *dev_private;
357 vrtl_eth_dev = &rte_eth_devices[tx_q->port_id];
358 dev_private = vrtl_eth_dev->data->dev_private;
360 if (!vrtl_eth_dev->data->dev_link.link_status)
363 nb_pkts = rte_ring_enqueue_burst(dev_private->tx_queue, (void **)bufs,
366 /* increment opacket count */
367 dev_private->eth_stats.opackets += nb_pkts;
369 /* increment obytes count */
370 for (i = 0; i < nb_pkts; i++)
371 dev_private->eth_stats.obytes += rte_pktmbuf_pkt_len(bufs[i]);
377 virtual_ethdev_tx_burst_fail(void *queue, struct rte_mbuf **bufs,
380 struct rte_eth_dev *vrtl_eth_dev = NULL;
381 struct virtual_ethdev_queue *tx_q = NULL;
382 struct virtual_ethdev_private *dev_private = NULL;
387 vrtl_eth_dev = &rte_eth_devices[tx_q->port_id];
388 dev_private = vrtl_eth_dev->data->dev_private;
390 if (dev_private->tx_burst_fail_count < nb_pkts) {
391 int successfully_txd = nb_pkts - dev_private->tx_burst_fail_count;
393 /* increment opacket count */
394 dev_private->eth_stats.opackets += successfully_txd;
396 /* free packets in burst */
397 for (i = 0; i < successfully_txd; i++) {
398 /* free packets in burst */
400 rte_pktmbuf_free(bufs[i]);
405 return successfully_txd;
413 virtual_ethdev_rx_burst_fn_set_success(uint16_t port_id, uint8_t success)
415 struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
418 vrtl_eth_dev->rx_pkt_burst = virtual_ethdev_rx_burst_success;
420 vrtl_eth_dev->rx_pkt_burst = virtual_ethdev_rx_burst_fail;
425 virtual_ethdev_tx_burst_fn_set_success(uint16_t port_id, uint8_t success)
427 struct virtual_ethdev_private *dev_private = NULL;
428 struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
430 dev_private = vrtl_eth_dev->data->dev_private;
433 vrtl_eth_dev->tx_pkt_burst = virtual_ethdev_tx_burst_success;
435 vrtl_eth_dev->tx_pkt_burst = virtual_ethdev_tx_burst_fail;
437 dev_private->tx_burst_fail_count = 0;
441 virtual_ethdev_tx_burst_fn_set_tx_pkt_fail_count(uint16_t port_id,
442 uint8_t packet_fail_count)
444 struct virtual_ethdev_private *dev_private = NULL;
445 struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
448 dev_private = vrtl_eth_dev->data->dev_private;
449 dev_private->tx_burst_fail_count = packet_fail_count;
453 virtual_ethdev_set_link_status(uint16_t port_id, uint8_t link_status)
455 struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
457 vrtl_eth_dev->data->dev_link.link_status = link_status;
461 virtual_ethdev_simulate_link_status_interrupt(uint16_t port_id,
464 struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
466 vrtl_eth_dev->data->dev_link.link_status = link_status;
468 _rte_eth_dev_callback_process(vrtl_eth_dev, RTE_ETH_EVENT_INTR_LSC,
473 virtual_ethdev_add_mbufs_to_rx_queue(uint16_t port_id,
474 struct rte_mbuf **pkt_burst, int burst_length)
476 struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
477 struct virtual_ethdev_private *dev_private =
478 vrtl_eth_dev->data->dev_private;
480 return rte_ring_enqueue_burst(dev_private->rx_queue, (void **)pkt_burst,
485 virtual_ethdev_get_mbufs_from_tx_queue(uint16_t port_id,
486 struct rte_mbuf **pkt_burst, int burst_length)
488 struct virtual_ethdev_private *dev_private;
489 struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
491 dev_private = vrtl_eth_dev->data->dev_private;
492 return rte_ring_dequeue_burst(dev_private->tx_queue, (void **)pkt_burst,
498 virtual_ethdev_create(const char *name, struct ether_addr *mac_addr,
499 uint8_t socket_id, uint8_t isr_support)
501 struct rte_pci_device *pci_dev = NULL;
502 struct rte_eth_dev *eth_dev = NULL;
503 struct rte_pci_driver *pci_drv = NULL;
504 struct rte_pci_id *id_table = NULL;
505 struct virtual_ethdev_private *dev_private = NULL;
506 char name_buf[RTE_RING_NAMESIZE];
509 /* now do all data allocation - for eth_dev structure, dummy pci driver
510 * and internal (dev_private) data
513 pci_dev = rte_zmalloc_socket(name, sizeof(*pci_dev), 0, socket_id);
517 pci_drv = rte_zmalloc_socket(name, sizeof(*pci_drv), 0, socket_id);
521 id_table = rte_zmalloc_socket(name, sizeof(*id_table), 0, socket_id);
522 if (id_table == NULL)
524 id_table->device_id = 0xBEEF;
526 dev_private = rte_zmalloc_socket(name, sizeof(*dev_private), 0, socket_id);
527 if (dev_private == NULL)
530 snprintf(name_buf, sizeof(name_buf), "%s_rxQ", name);
531 dev_private->rx_queue = rte_ring_create(name_buf, MAX_PKT_BURST, socket_id,
533 if (dev_private->rx_queue == NULL)
536 snprintf(name_buf, sizeof(name_buf), "%s_txQ", name);
537 dev_private->tx_queue = rte_ring_create(name_buf, MAX_PKT_BURST, socket_id,
539 if (dev_private->tx_queue == NULL)
542 /* reserve an ethdev entry */
543 eth_dev = rte_eth_dev_allocate(name);
547 pci_dev->device.numa_node = socket_id;
548 pci_dev->device.name = eth_dev->data->name;
549 pci_drv->driver.name = virtual_ethdev_driver_name;
550 pci_drv->id_table = id_table;
553 pci_drv->drv_flags |= RTE_PCI_DRV_INTR_LSC;
555 pci_drv->drv_flags &= ~RTE_PCI_DRV_INTR_LSC;
558 eth_dev->device = &pci_dev->device;
559 eth_dev->device->driver = &pci_drv->driver;
561 eth_dev->data->nb_rx_queues = (uint16_t)1;
562 eth_dev->data->nb_tx_queues = (uint16_t)1;
564 eth_dev->data->dev_link.link_status = ETH_LINK_DOWN;
565 eth_dev->data->dev_link.link_speed = ETH_SPEED_NUM_10G;
566 eth_dev->data->dev_link.link_duplex = ETH_LINK_FULL_DUPLEX;
568 eth_dev->data->mac_addrs = rte_zmalloc(name, ETHER_ADDR_LEN, 0);
569 if (eth_dev->data->mac_addrs == NULL)
572 memcpy(eth_dev->data->mac_addrs, mac_addr,
573 sizeof(*eth_dev->data->mac_addrs));
575 eth_dev->data->dev_started = 0;
576 eth_dev->data->promiscuous = 0;
577 eth_dev->data->scattered_rx = 0;
578 eth_dev->data->all_multicast = 0;
580 eth_dev->data->dev_private = dev_private;
582 /* Copy default device operation functions */
583 dev_private->dev_ops = virtual_ethdev_default_dev_ops;
584 eth_dev->dev_ops = &dev_private->dev_ops;
586 pci_dev->device.driver = &pci_drv->driver;
587 eth_dev->device = &pci_dev->device;
589 eth_dev->rx_pkt_burst = virtual_ethdev_rx_burst_success;
590 eth_dev->tx_pkt_burst = virtual_ethdev_tx_burst_success;
592 return eth_dev->data->port_id;
598 rte_free(dev_private);