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));
216 virtual_ethdev_promiscuous_mode_enable(struct rte_eth_dev *dev __rte_unused)
222 virtual_ethdev_promiscuous_mode_disable(struct rte_eth_dev *dev __rte_unused)
228 virtual_ethdev_mac_address_set(__rte_unused struct rte_eth_dev *dev,
229 __rte_unused struct rte_ether_addr *addr)
234 static const struct eth_dev_ops virtual_ethdev_default_dev_ops = {
235 .dev_configure = virtual_ethdev_configure_success,
236 .dev_start = virtual_ethdev_start_success,
237 .dev_stop = virtual_ethdev_stop,
238 .dev_close = virtual_ethdev_close,
239 .dev_infos_get = virtual_ethdev_info_get,
240 .rx_queue_setup = virtual_ethdev_rx_queue_setup_success,
241 .tx_queue_setup = virtual_ethdev_tx_queue_setup_success,
242 .rx_queue_release = virtual_ethdev_rx_queue_release,
243 .tx_queue_release = virtual_ethdev_tx_queue_release,
244 .link_update = virtual_ethdev_link_update_success,
245 .mac_addr_set = virtual_ethdev_mac_address_set,
246 .stats_get = virtual_ethdev_stats_get,
247 .stats_reset = virtual_ethdev_stats_reset,
248 .promiscuous_enable = virtual_ethdev_promiscuous_mode_enable,
249 .promiscuous_disable = virtual_ethdev_promiscuous_mode_disable
253 virtual_ethdev_start_fn_set_success(uint16_t port_id, uint8_t success)
255 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
256 struct virtual_ethdev_private *dev_private = dev->data->dev_private;
257 struct eth_dev_ops *dev_ops = &dev_private->dev_ops;
260 dev_ops->dev_start = virtual_ethdev_start_success;
262 dev_ops->dev_start = virtual_ethdev_start_fail;
267 virtual_ethdev_configure_fn_set_success(uint16_t port_id, uint8_t success)
269 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
270 struct virtual_ethdev_private *dev_private = dev->data->dev_private;
271 struct eth_dev_ops *dev_ops = &dev_private->dev_ops;
274 dev_ops->dev_configure = virtual_ethdev_configure_success;
276 dev_ops->dev_configure = virtual_ethdev_configure_fail;
280 virtual_ethdev_rx_queue_setup_fn_set_success(uint16_t port_id, uint8_t success)
282 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
283 struct virtual_ethdev_private *dev_private = dev->data->dev_private;
284 struct eth_dev_ops *dev_ops = &dev_private->dev_ops;
287 dev_ops->rx_queue_setup = virtual_ethdev_rx_queue_setup_success;
289 dev_ops->rx_queue_setup = virtual_ethdev_rx_queue_setup_fail;
293 virtual_ethdev_tx_queue_setup_fn_set_success(uint16_t port_id, uint8_t success)
295 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
296 struct virtual_ethdev_private *dev_private = dev->data->dev_private;
297 struct eth_dev_ops *dev_ops = &dev_private->dev_ops;
300 dev_ops->tx_queue_setup = virtual_ethdev_tx_queue_setup_success;
302 dev_ops->tx_queue_setup = virtual_ethdev_tx_queue_setup_fail;
306 virtual_ethdev_link_update_fn_set_success(uint16_t port_id, uint8_t success)
308 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
309 struct virtual_ethdev_private *dev_private = dev->data->dev_private;
310 struct eth_dev_ops *dev_ops = &dev_private->dev_ops;
313 dev_ops->link_update = virtual_ethdev_link_update_success;
315 dev_ops->link_update = virtual_ethdev_link_update_fail;
320 virtual_ethdev_rx_burst_success(void *queue __rte_unused,
321 struct rte_mbuf **bufs,
324 struct rte_eth_dev *vrtl_eth_dev;
325 struct virtual_ethdev_queue *pq_map;
326 struct virtual_ethdev_private *dev_private;
330 pq_map = (struct virtual_ethdev_queue *)queue;
331 vrtl_eth_dev = &rte_eth_devices[pq_map->port_id];
332 dev_private = vrtl_eth_dev->data->dev_private;
334 rx_count = rte_ring_dequeue_burst(dev_private->rx_queue, (void **) bufs,
337 /* increments ipackets count */
338 dev_private->eth_stats.ipackets += rx_count;
340 /* increments ibytes count */
341 for (i = 0; i < rx_count; i++)
342 dev_private->eth_stats.ibytes += rte_pktmbuf_pkt_len(bufs[i]);
348 virtual_ethdev_rx_burst_fail(void *queue __rte_unused,
349 struct rte_mbuf **bufs __rte_unused,
350 uint16_t nb_pkts __rte_unused)
356 virtual_ethdev_tx_burst_success(void *queue, struct rte_mbuf **bufs,
359 struct virtual_ethdev_queue *tx_q = queue;
361 struct rte_eth_dev *vrtl_eth_dev;
362 struct virtual_ethdev_private *dev_private;
366 vrtl_eth_dev = &rte_eth_devices[tx_q->port_id];
367 dev_private = vrtl_eth_dev->data->dev_private;
369 if (!vrtl_eth_dev->data->dev_link.link_status)
372 nb_pkts = rte_ring_enqueue_burst(dev_private->tx_queue, (void **)bufs,
375 /* increment opacket count */
376 dev_private->eth_stats.opackets += nb_pkts;
378 /* increment obytes count */
379 for (i = 0; i < nb_pkts; i++)
380 dev_private->eth_stats.obytes += rte_pktmbuf_pkt_len(bufs[i]);
386 virtual_ethdev_tx_burst_fail(void *queue, struct rte_mbuf **bufs,
389 struct rte_eth_dev *vrtl_eth_dev = NULL;
390 struct virtual_ethdev_queue *tx_q = NULL;
391 struct virtual_ethdev_private *dev_private = NULL;
396 vrtl_eth_dev = &rte_eth_devices[tx_q->port_id];
397 dev_private = vrtl_eth_dev->data->dev_private;
399 if (dev_private->tx_burst_fail_count < nb_pkts) {
400 int successfully_txd = nb_pkts - dev_private->tx_burst_fail_count;
402 /* increment opacket count */
403 dev_private->eth_stats.opackets += successfully_txd;
405 /* free packets in burst */
406 for (i = 0; i < successfully_txd; i++) {
407 /* free packets in burst */
409 rte_pktmbuf_free(bufs[i]);
414 return successfully_txd;
422 virtual_ethdev_rx_burst_fn_set_success(uint16_t port_id, uint8_t success)
424 struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
427 vrtl_eth_dev->rx_pkt_burst = virtual_ethdev_rx_burst_success;
429 vrtl_eth_dev->rx_pkt_burst = virtual_ethdev_rx_burst_fail;
434 virtual_ethdev_tx_burst_fn_set_success(uint16_t port_id, uint8_t success)
436 struct virtual_ethdev_private *dev_private = NULL;
437 struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
439 dev_private = vrtl_eth_dev->data->dev_private;
442 vrtl_eth_dev->tx_pkt_burst = virtual_ethdev_tx_burst_success;
444 vrtl_eth_dev->tx_pkt_burst = virtual_ethdev_tx_burst_fail;
446 dev_private->tx_burst_fail_count = 0;
450 virtual_ethdev_tx_burst_fn_set_tx_pkt_fail_count(uint16_t port_id,
451 uint8_t packet_fail_count)
453 struct virtual_ethdev_private *dev_private = NULL;
454 struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
457 dev_private = vrtl_eth_dev->data->dev_private;
458 dev_private->tx_burst_fail_count = packet_fail_count;
462 virtual_ethdev_set_link_status(uint16_t port_id, uint8_t link_status)
464 struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
466 vrtl_eth_dev->data->dev_link.link_status = link_status;
470 virtual_ethdev_simulate_link_status_interrupt(uint16_t port_id,
473 struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
475 vrtl_eth_dev->data->dev_link.link_status = link_status;
477 _rte_eth_dev_callback_process(vrtl_eth_dev, RTE_ETH_EVENT_INTR_LSC,
482 virtual_ethdev_add_mbufs_to_rx_queue(uint16_t port_id,
483 struct rte_mbuf **pkt_burst, int burst_length)
485 struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
486 struct virtual_ethdev_private *dev_private =
487 vrtl_eth_dev->data->dev_private;
489 return rte_ring_enqueue_burst(dev_private->rx_queue, (void **)pkt_burst,
494 virtual_ethdev_get_mbufs_from_tx_queue(uint16_t port_id,
495 struct rte_mbuf **pkt_burst, int burst_length)
497 struct virtual_ethdev_private *dev_private;
498 struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
500 dev_private = vrtl_eth_dev->data->dev_private;
501 return rte_ring_dequeue_burst(dev_private->tx_queue, (void **)pkt_burst,
507 virtual_ethdev_create(const char *name, struct rte_ether_addr *mac_addr,
508 uint8_t socket_id, uint8_t isr_support)
510 struct rte_pci_device *pci_dev = NULL;
511 struct rte_eth_dev *eth_dev = NULL;
512 struct rte_pci_driver *pci_drv = NULL;
513 struct rte_pci_id *id_table = NULL;
514 struct virtual_ethdev_private *dev_private = NULL;
515 char name_buf[RTE_RING_NAMESIZE];
518 /* now do all data allocation - for eth_dev structure, dummy pci driver
519 * and internal (dev_private) data
522 pci_dev = rte_zmalloc_socket(name, sizeof(*pci_dev), 0, socket_id);
526 pci_drv = rte_zmalloc_socket(name, sizeof(*pci_drv), 0, socket_id);
530 id_table = rte_zmalloc_socket(name, sizeof(*id_table), 0, socket_id);
531 if (id_table == NULL)
533 id_table->device_id = 0xBEEF;
535 dev_private = rte_zmalloc_socket(name, sizeof(*dev_private), 0, socket_id);
536 if (dev_private == NULL)
539 snprintf(name_buf, sizeof(name_buf), "%s_rxQ", name);
540 dev_private->rx_queue = rte_ring_create(name_buf, MAX_PKT_BURST, socket_id,
542 if (dev_private->rx_queue == NULL)
545 snprintf(name_buf, sizeof(name_buf), "%s_txQ", name);
546 dev_private->tx_queue = rte_ring_create(name_buf, MAX_PKT_BURST, socket_id,
548 if (dev_private->tx_queue == NULL)
551 /* reserve an ethdev entry */
552 eth_dev = rte_eth_dev_allocate(name);
556 pci_dev->device.numa_node = socket_id;
557 pci_dev->device.name = eth_dev->data->name;
558 pci_drv->driver.name = virtual_ethdev_driver_name;
559 pci_drv->id_table = id_table;
562 pci_drv->drv_flags |= RTE_PCI_DRV_INTR_LSC;
564 pci_drv->drv_flags &= ~RTE_PCI_DRV_INTR_LSC;
567 eth_dev->device = &pci_dev->device;
568 eth_dev->device->driver = &pci_drv->driver;
570 eth_dev->data->nb_rx_queues = (uint16_t)1;
571 eth_dev->data->nb_tx_queues = (uint16_t)1;
573 eth_dev->data->dev_link.link_status = ETH_LINK_DOWN;
574 eth_dev->data->dev_link.link_speed = ETH_SPEED_NUM_10G;
575 eth_dev->data->dev_link.link_duplex = ETH_LINK_FULL_DUPLEX;
577 eth_dev->data->mac_addrs = rte_zmalloc(name, RTE_ETHER_ADDR_LEN, 0);
578 if (eth_dev->data->mac_addrs == NULL)
581 memcpy(eth_dev->data->mac_addrs, mac_addr,
582 sizeof(*eth_dev->data->mac_addrs));
584 eth_dev->data->dev_started = 0;
585 eth_dev->data->promiscuous = 0;
586 eth_dev->data->scattered_rx = 0;
587 eth_dev->data->all_multicast = 0;
589 eth_dev->data->dev_private = dev_private;
591 /* Copy default device operation functions */
592 dev_private->dev_ops = virtual_ethdev_default_dev_ops;
593 eth_dev->dev_ops = &dev_private->dev_ops;
595 pci_dev->device.driver = &pci_drv->driver;
596 eth_dev->device = &pci_dev->device;
598 eth_dev->rx_pkt_burst = virtual_ethdev_rx_burst_success;
599 eth_dev->tx_pkt_burst = virtual_ethdev_tx_burst_success;
601 rte_eth_dev_probing_finish(eth_dev);
603 return eth_dev->data->port_id;
609 rte_free(dev_private);