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;
99 virtual_ethdev_rx_queue_setup_success(struct rte_eth_dev *dev,
100 uint16_t rx_queue_id, uint16_t nb_rx_desc __rte_unused,
101 unsigned int socket_id,
102 const struct rte_eth_rxconf *rx_conf __rte_unused,
103 struct rte_mempool *mb_pool __rte_unused)
105 struct virtual_ethdev_queue *rx_q;
107 rx_q = (struct virtual_ethdev_queue *)rte_zmalloc_socket(NULL,
108 sizeof(struct virtual_ethdev_queue), 0, socket_id);
113 rx_q->port_id = dev->data->port_id;
114 rx_q->queue_id = rx_queue_id;
116 dev->data->rx_queues[rx_queue_id] = rx_q;
122 virtual_ethdev_rx_queue_setup_fail(struct rte_eth_dev *dev __rte_unused,
123 uint16_t rx_queue_id __rte_unused, uint16_t nb_rx_desc __rte_unused,
124 unsigned int socket_id __rte_unused,
125 const struct rte_eth_rxconf *rx_conf __rte_unused,
126 struct rte_mempool *mb_pool __rte_unused)
132 virtual_ethdev_tx_queue_setup_success(struct rte_eth_dev *dev,
133 uint16_t tx_queue_id, uint16_t nb_tx_desc __rte_unused,
134 unsigned int socket_id,
135 const struct rte_eth_txconf *tx_conf __rte_unused)
137 struct virtual_ethdev_queue *tx_q;
139 tx_q = (struct virtual_ethdev_queue *)rte_zmalloc_socket(NULL,
140 sizeof(struct virtual_ethdev_queue), 0, socket_id);
145 tx_q->port_id = dev->data->port_id;
146 tx_q->queue_id = tx_queue_id;
148 dev->data->tx_queues[tx_queue_id] = tx_q;
154 virtual_ethdev_tx_queue_setup_fail(struct rte_eth_dev *dev __rte_unused,
155 uint16_t tx_queue_id __rte_unused, uint16_t nb_tx_desc __rte_unused,
156 unsigned int socket_id __rte_unused,
157 const struct rte_eth_txconf *tx_conf __rte_unused)
163 virtual_ethdev_rx_queue_release(void *q __rte_unused)
168 virtual_ethdev_tx_queue_release(void *q __rte_unused)
173 virtual_ethdev_link_update_success(struct rte_eth_dev *bonded_eth_dev,
174 int wait_to_complete __rte_unused)
176 if (!bonded_eth_dev->data->dev_started)
177 bonded_eth_dev->data->dev_link.link_status = ETH_LINK_DOWN;
183 virtual_ethdev_link_update_fail(struct rte_eth_dev *bonded_eth_dev __rte_unused,
184 int wait_to_complete __rte_unused)
190 virtual_ethdev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
192 struct virtual_ethdev_private *dev_private = dev->data->dev_private;
195 rte_memcpy(stats, &dev_private->eth_stats, sizeof(*stats));
201 virtual_ethdev_stats_reset(struct rte_eth_dev *dev)
203 struct virtual_ethdev_private *dev_private = dev->data->dev_private;
206 while (rte_ring_dequeue(dev_private->tx_queue, &pkt) == -ENOBUFS)
207 rte_pktmbuf_free(pkt);
209 /* Reset internal statistics */
210 memset(&dev_private->eth_stats, 0, sizeof(dev_private->eth_stats));
214 virtual_ethdev_promiscuous_mode_enable(struct rte_eth_dev *dev __rte_unused)
218 virtual_ethdev_promiscuous_mode_disable(struct rte_eth_dev *dev __rte_unused)
222 virtual_ethdev_mac_address_set(__rte_unused struct rte_eth_dev *dev,
223 __rte_unused struct rte_ether_addr *addr)
228 static const struct eth_dev_ops virtual_ethdev_default_dev_ops = {
229 .dev_configure = virtual_ethdev_configure_success,
230 .dev_start = virtual_ethdev_start_success,
231 .dev_stop = virtual_ethdev_stop,
232 .dev_close = virtual_ethdev_close,
233 .dev_infos_get = virtual_ethdev_info_get,
234 .rx_queue_setup = virtual_ethdev_rx_queue_setup_success,
235 .tx_queue_setup = virtual_ethdev_tx_queue_setup_success,
236 .rx_queue_release = virtual_ethdev_rx_queue_release,
237 .tx_queue_release = virtual_ethdev_tx_queue_release,
238 .link_update = virtual_ethdev_link_update_success,
239 .mac_addr_set = virtual_ethdev_mac_address_set,
240 .stats_get = virtual_ethdev_stats_get,
241 .stats_reset = virtual_ethdev_stats_reset,
242 .promiscuous_enable = virtual_ethdev_promiscuous_mode_enable,
243 .promiscuous_disable = virtual_ethdev_promiscuous_mode_disable
247 virtual_ethdev_start_fn_set_success(uint16_t port_id, uint8_t success)
249 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
250 struct virtual_ethdev_private *dev_private = dev->data->dev_private;
251 struct eth_dev_ops *dev_ops = &dev_private->dev_ops;
254 dev_ops->dev_start = virtual_ethdev_start_success;
256 dev_ops->dev_start = virtual_ethdev_start_fail;
261 virtual_ethdev_configure_fn_set_success(uint16_t port_id, uint8_t success)
263 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
264 struct virtual_ethdev_private *dev_private = dev->data->dev_private;
265 struct eth_dev_ops *dev_ops = &dev_private->dev_ops;
268 dev_ops->dev_configure = virtual_ethdev_configure_success;
270 dev_ops->dev_configure = virtual_ethdev_configure_fail;
274 virtual_ethdev_rx_queue_setup_fn_set_success(uint16_t port_id, uint8_t success)
276 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
277 struct virtual_ethdev_private *dev_private = dev->data->dev_private;
278 struct eth_dev_ops *dev_ops = &dev_private->dev_ops;
281 dev_ops->rx_queue_setup = virtual_ethdev_rx_queue_setup_success;
283 dev_ops->rx_queue_setup = virtual_ethdev_rx_queue_setup_fail;
287 virtual_ethdev_tx_queue_setup_fn_set_success(uint16_t port_id, uint8_t success)
289 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
290 struct virtual_ethdev_private *dev_private = dev->data->dev_private;
291 struct eth_dev_ops *dev_ops = &dev_private->dev_ops;
294 dev_ops->tx_queue_setup = virtual_ethdev_tx_queue_setup_success;
296 dev_ops->tx_queue_setup = virtual_ethdev_tx_queue_setup_fail;
300 virtual_ethdev_link_update_fn_set_success(uint16_t port_id, uint8_t success)
302 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
303 struct virtual_ethdev_private *dev_private = dev->data->dev_private;
304 struct eth_dev_ops *dev_ops = &dev_private->dev_ops;
307 dev_ops->link_update = virtual_ethdev_link_update_success;
309 dev_ops->link_update = virtual_ethdev_link_update_fail;
314 virtual_ethdev_rx_burst_success(void *queue __rte_unused,
315 struct rte_mbuf **bufs,
318 struct rte_eth_dev *vrtl_eth_dev;
319 struct virtual_ethdev_queue *pq_map;
320 struct virtual_ethdev_private *dev_private;
324 pq_map = (struct virtual_ethdev_queue *)queue;
325 vrtl_eth_dev = &rte_eth_devices[pq_map->port_id];
326 dev_private = vrtl_eth_dev->data->dev_private;
328 rx_count = rte_ring_dequeue_burst(dev_private->rx_queue, (void **) bufs,
331 /* increments ipackets count */
332 dev_private->eth_stats.ipackets += rx_count;
334 /* increments ibytes count */
335 for (i = 0; i < rx_count; i++)
336 dev_private->eth_stats.ibytes += rte_pktmbuf_pkt_len(bufs[i]);
342 virtual_ethdev_rx_burst_fail(void *queue __rte_unused,
343 struct rte_mbuf **bufs __rte_unused,
344 uint16_t nb_pkts __rte_unused)
350 virtual_ethdev_tx_burst_success(void *queue, struct rte_mbuf **bufs,
353 struct virtual_ethdev_queue *tx_q = queue;
355 struct rte_eth_dev *vrtl_eth_dev;
356 struct virtual_ethdev_private *dev_private;
360 vrtl_eth_dev = &rte_eth_devices[tx_q->port_id];
361 dev_private = vrtl_eth_dev->data->dev_private;
363 if (!vrtl_eth_dev->data->dev_link.link_status)
366 nb_pkts = rte_ring_enqueue_burst(dev_private->tx_queue, (void **)bufs,
369 /* increment opacket count */
370 dev_private->eth_stats.opackets += nb_pkts;
372 /* increment obytes count */
373 for (i = 0; i < nb_pkts; i++)
374 dev_private->eth_stats.obytes += rte_pktmbuf_pkt_len(bufs[i]);
380 virtual_ethdev_tx_burst_fail(void *queue, struct rte_mbuf **bufs,
383 struct rte_eth_dev *vrtl_eth_dev = NULL;
384 struct virtual_ethdev_queue *tx_q = NULL;
385 struct virtual_ethdev_private *dev_private = NULL;
390 vrtl_eth_dev = &rte_eth_devices[tx_q->port_id];
391 dev_private = vrtl_eth_dev->data->dev_private;
393 if (dev_private->tx_burst_fail_count < nb_pkts) {
394 int successfully_txd = nb_pkts - dev_private->tx_burst_fail_count;
396 /* increment opacket count */
397 dev_private->eth_stats.opackets += successfully_txd;
399 /* free packets in burst */
400 for (i = 0; i < successfully_txd; i++) {
401 /* free packets in burst */
403 rte_pktmbuf_free(bufs[i]);
408 return successfully_txd;
416 virtual_ethdev_rx_burst_fn_set_success(uint16_t port_id, uint8_t success)
418 struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
421 vrtl_eth_dev->rx_pkt_burst = virtual_ethdev_rx_burst_success;
423 vrtl_eth_dev->rx_pkt_burst = virtual_ethdev_rx_burst_fail;
428 virtual_ethdev_tx_burst_fn_set_success(uint16_t port_id, uint8_t success)
430 struct virtual_ethdev_private *dev_private = NULL;
431 struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
433 dev_private = vrtl_eth_dev->data->dev_private;
436 vrtl_eth_dev->tx_pkt_burst = virtual_ethdev_tx_burst_success;
438 vrtl_eth_dev->tx_pkt_burst = virtual_ethdev_tx_burst_fail;
440 dev_private->tx_burst_fail_count = 0;
444 virtual_ethdev_tx_burst_fn_set_tx_pkt_fail_count(uint16_t port_id,
445 uint8_t packet_fail_count)
447 struct virtual_ethdev_private *dev_private = NULL;
448 struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
451 dev_private = vrtl_eth_dev->data->dev_private;
452 dev_private->tx_burst_fail_count = packet_fail_count;
456 virtual_ethdev_set_link_status(uint16_t port_id, uint8_t link_status)
458 struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
460 vrtl_eth_dev->data->dev_link.link_status = link_status;
464 virtual_ethdev_simulate_link_status_interrupt(uint16_t port_id,
467 struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
469 vrtl_eth_dev->data->dev_link.link_status = link_status;
471 _rte_eth_dev_callback_process(vrtl_eth_dev, RTE_ETH_EVENT_INTR_LSC,
476 virtual_ethdev_add_mbufs_to_rx_queue(uint16_t port_id,
477 struct rte_mbuf **pkt_burst, int burst_length)
479 struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
480 struct virtual_ethdev_private *dev_private =
481 vrtl_eth_dev->data->dev_private;
483 return rte_ring_enqueue_burst(dev_private->rx_queue, (void **)pkt_burst,
488 virtual_ethdev_get_mbufs_from_tx_queue(uint16_t port_id,
489 struct rte_mbuf **pkt_burst, int burst_length)
491 struct virtual_ethdev_private *dev_private;
492 struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
494 dev_private = vrtl_eth_dev->data->dev_private;
495 return rte_ring_dequeue_burst(dev_private->tx_queue, (void **)pkt_burst,
501 virtual_ethdev_create(const char *name, struct rte_ether_addr *mac_addr,
502 uint8_t socket_id, uint8_t isr_support)
504 struct rte_pci_device *pci_dev = NULL;
505 struct rte_eth_dev *eth_dev = NULL;
506 struct rte_pci_driver *pci_drv = NULL;
507 struct rte_pci_id *id_table = NULL;
508 struct virtual_ethdev_private *dev_private = NULL;
509 char name_buf[RTE_RING_NAMESIZE];
512 /* now do all data allocation - for eth_dev structure, dummy pci driver
513 * and internal (dev_private) data
516 pci_dev = rte_zmalloc_socket(name, sizeof(*pci_dev), 0, socket_id);
520 pci_drv = rte_zmalloc_socket(name, sizeof(*pci_drv), 0, socket_id);
524 id_table = rte_zmalloc_socket(name, sizeof(*id_table), 0, socket_id);
525 if (id_table == NULL)
527 id_table->device_id = 0xBEEF;
529 dev_private = rte_zmalloc_socket(name, sizeof(*dev_private), 0, socket_id);
530 if (dev_private == NULL)
533 snprintf(name_buf, sizeof(name_buf), "%s_rxQ", name);
534 dev_private->rx_queue = rte_ring_create(name_buf, MAX_PKT_BURST, socket_id,
536 if (dev_private->rx_queue == NULL)
539 snprintf(name_buf, sizeof(name_buf), "%s_txQ", name);
540 dev_private->tx_queue = rte_ring_create(name_buf, MAX_PKT_BURST, socket_id,
542 if (dev_private->tx_queue == NULL)
545 /* reserve an ethdev entry */
546 eth_dev = rte_eth_dev_allocate(name);
550 pci_dev->device.numa_node = socket_id;
551 pci_dev->device.name = eth_dev->data->name;
552 pci_drv->driver.name = virtual_ethdev_driver_name;
553 pci_drv->id_table = id_table;
556 pci_drv->drv_flags |= RTE_PCI_DRV_INTR_LSC;
558 pci_drv->drv_flags &= ~RTE_PCI_DRV_INTR_LSC;
561 eth_dev->device = &pci_dev->device;
562 eth_dev->device->driver = &pci_drv->driver;
564 eth_dev->data->nb_rx_queues = (uint16_t)1;
565 eth_dev->data->nb_tx_queues = (uint16_t)1;
567 eth_dev->data->dev_link.link_status = ETH_LINK_DOWN;
568 eth_dev->data->dev_link.link_speed = ETH_SPEED_NUM_10G;
569 eth_dev->data->dev_link.link_duplex = ETH_LINK_FULL_DUPLEX;
571 eth_dev->data->mac_addrs = rte_zmalloc(name, RTE_ETHER_ADDR_LEN, 0);
572 if (eth_dev->data->mac_addrs == NULL)
575 memcpy(eth_dev->data->mac_addrs, mac_addr,
576 sizeof(*eth_dev->data->mac_addrs));
578 eth_dev->data->dev_started = 0;
579 eth_dev->data->promiscuous = 0;
580 eth_dev->data->scattered_rx = 0;
581 eth_dev->data->all_multicast = 0;
583 eth_dev->data->dev_private = dev_private;
585 /* Copy default device operation functions */
586 dev_private->dev_ops = virtual_ethdev_default_dev_ops;
587 eth_dev->dev_ops = &dev_private->dev_ops;
589 pci_dev->device.driver = &pci_drv->driver;
590 eth_dev->device = &pci_dev->device;
592 eth_dev->rx_pkt_burst = virtual_ethdev_rx_burst_success;
593 eth_dev->tx_pkt_burst = virtual_ethdev_tx_burst_success;
595 rte_eth_dev_probing_finish(eth_dev);
597 return eth_dev->data->port_id;
603 rte_free(dev_private);