1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2017 Intel Corporation
9 #include <rte_string_fns.h>
10 #include <rte_ethdev_driver.h>
11 #include <rte_ethdev_vdev.h>
13 #include <rte_kvargs.h>
14 #include <rte_malloc.h>
15 #include <rte_bus_vdev.h>
17 /* Only single queue supported */
18 #define KNI_MAX_QUEUE_PER_PORT 1
20 #define MAX_KNI_PORTS 8
22 #define KNI_ETHER_MTU(mbuf_size) \
23 ((mbuf_size) - RTE_ETHER_HDR_LEN) /**< Ethernet MTU. */
25 #define ETH_KNI_NO_REQUEST_THREAD_ARG "no_request_thread"
26 static const char * const valid_arguments[] = {
27 ETH_KNI_NO_REQUEST_THREAD_ARG,
32 int no_request_thread;
35 struct pmd_queue_stats {
41 struct pmd_internals *internals;
42 struct rte_mempool *mb_pool;
44 struct pmd_queue_stats rx;
45 struct pmd_queue_stats tx;
48 struct pmd_internals {
54 int no_request_thread;
56 struct rte_ether_addr eth_addr;
58 struct pmd_queue rx_queues[KNI_MAX_QUEUE_PER_PORT];
59 struct pmd_queue tx_queues[KNI_MAX_QUEUE_PER_PORT];
62 static const struct rte_eth_link pmd_link = {
63 .link_speed = ETH_SPEED_NUM_10G,
64 .link_duplex = ETH_LINK_FULL_DUPLEX,
65 .link_status = ETH_LINK_DOWN,
66 .link_autoneg = ETH_LINK_FIXED,
68 static int is_kni_initialized;
70 static int eth_kni_logtype;
72 #define PMD_LOG(level, fmt, args...) \
73 rte_log(RTE_LOG_ ## level, eth_kni_logtype, \
74 "%s(): " fmt "\n", __func__, ##args)
76 eth_kni_rx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs)
78 struct pmd_queue *kni_q = q;
79 struct rte_kni *kni = kni_q->internals->kni;
82 nb_pkts = rte_kni_rx_burst(kni, bufs, nb_bufs);
84 kni_q->rx.pkts += nb_pkts;
90 eth_kni_tx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs)
92 struct pmd_queue *kni_q = q;
93 struct rte_kni *kni = kni_q->internals->kni;
96 nb_pkts = rte_kni_tx_burst(kni, bufs, nb_bufs);
98 kni_q->tx.pkts += nb_pkts;
104 kni_handle_request(void *param)
106 struct pmd_internals *internals = param;
109 while (!internals->stop_thread) {
110 rte_kni_handle_request(internals->kni);
118 eth_kni_start(struct rte_eth_dev *dev)
120 struct pmd_internals *internals = dev->data->dev_private;
121 uint16_t port_id = dev->data->port_id;
122 struct rte_mempool *mb_pool;
123 struct rte_kni_conf conf;
124 const char *name = dev->device->name + 4; /* remove net_ */
126 mb_pool = internals->rx_queues[0].mb_pool;
127 strlcpy(conf.name, name, RTE_KNI_NAMESIZE);
129 conf.group_id = port_id;
131 rte_pktmbuf_data_room_size(mb_pool) - RTE_PKTMBUF_HEADROOM;
132 conf.mtu = KNI_ETHER_MTU(conf.mbuf_size);
134 internals->kni = rte_kni_alloc(mb_pool, &conf, NULL);
135 if (internals->kni == NULL) {
137 "Fail to create kni interface for port: %d",
146 eth_kni_dev_start(struct rte_eth_dev *dev)
148 struct pmd_internals *internals = dev->data->dev_private;
151 if (internals->is_kni_started == 0) {
152 ret = eth_kni_start(dev);
155 internals->is_kni_started = 1;
158 if (internals->no_request_thread == 0) {
159 ret = rte_ctrl_thread_create(&internals->thread,
160 "kni_handle_req", NULL,
161 kni_handle_request, internals);
164 "Fail to create kni request thread");
169 dev->data->dev_link.link_status = 1;
175 eth_kni_dev_stop(struct rte_eth_dev *dev)
177 struct pmd_internals *internals = dev->data->dev_private;
180 if (internals->no_request_thread == 0) {
181 internals->stop_thread = 1;
183 ret = pthread_cancel(internals->thread);
185 PMD_LOG(ERR, "Can't cancel the thread");
187 ret = pthread_join(internals->thread, NULL);
189 PMD_LOG(ERR, "Can't join the thread");
191 internals->stop_thread = 0;
194 dev->data->dev_link.link_status = 0;
198 eth_kni_dev_configure(struct rte_eth_dev *dev __rte_unused)
204 eth_kni_dev_info(struct rte_eth_dev *dev __rte_unused,
205 struct rte_eth_dev_info *dev_info)
207 dev_info->max_mac_addrs = 1;
208 dev_info->max_rx_pktlen = UINT32_MAX;
209 dev_info->max_rx_queues = KNI_MAX_QUEUE_PER_PORT;
210 dev_info->max_tx_queues = KNI_MAX_QUEUE_PER_PORT;
211 dev_info->min_rx_bufsize = 0;
215 eth_kni_rx_queue_setup(struct rte_eth_dev *dev,
216 uint16_t rx_queue_id,
217 uint16_t nb_rx_desc __rte_unused,
218 unsigned int socket_id __rte_unused,
219 const struct rte_eth_rxconf *rx_conf __rte_unused,
220 struct rte_mempool *mb_pool)
222 struct pmd_internals *internals = dev->data->dev_private;
225 q = &internals->rx_queues[rx_queue_id];
226 q->internals = internals;
227 q->mb_pool = mb_pool;
229 dev->data->rx_queues[rx_queue_id] = q;
235 eth_kni_tx_queue_setup(struct rte_eth_dev *dev,
236 uint16_t tx_queue_id,
237 uint16_t nb_tx_desc __rte_unused,
238 unsigned int socket_id __rte_unused,
239 const struct rte_eth_txconf *tx_conf __rte_unused)
241 struct pmd_internals *internals = dev->data->dev_private;
244 q = &internals->tx_queues[tx_queue_id];
245 q->internals = internals;
247 dev->data->tx_queues[tx_queue_id] = q;
253 eth_kni_queue_release(void *q __rte_unused)
258 eth_kni_link_update(struct rte_eth_dev *dev __rte_unused,
259 int wait_to_complete __rte_unused)
265 eth_kni_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
267 unsigned long rx_packets_total = 0, rx_bytes_total = 0;
268 unsigned long tx_packets_total = 0, tx_bytes_total = 0;
269 struct rte_eth_dev_data *data = dev->data;
270 unsigned int i, num_stats;
273 num_stats = RTE_MIN((unsigned int)RTE_ETHDEV_QUEUE_STAT_CNTRS,
275 for (i = 0; i < num_stats; i++) {
276 q = data->rx_queues[i];
277 stats->q_ipackets[i] = q->rx.pkts;
278 stats->q_ibytes[i] = q->rx.bytes;
279 rx_packets_total += stats->q_ipackets[i];
280 rx_bytes_total += stats->q_ibytes[i];
283 num_stats = RTE_MIN((unsigned int)RTE_ETHDEV_QUEUE_STAT_CNTRS,
285 for (i = 0; i < num_stats; i++) {
286 q = data->tx_queues[i];
287 stats->q_opackets[i] = q->tx.pkts;
288 stats->q_obytes[i] = q->tx.bytes;
289 tx_packets_total += stats->q_opackets[i];
290 tx_bytes_total += stats->q_obytes[i];
293 stats->ipackets = rx_packets_total;
294 stats->ibytes = rx_bytes_total;
295 stats->opackets = tx_packets_total;
296 stats->obytes = tx_bytes_total;
302 eth_kni_stats_reset(struct rte_eth_dev *dev)
304 struct rte_eth_dev_data *data = dev->data;
308 for (i = 0; i < data->nb_rx_queues; i++) {
309 q = data->rx_queues[i];
313 for (i = 0; i < data->nb_tx_queues; i++) {
314 q = data->tx_queues[i];
320 static const struct eth_dev_ops eth_kni_ops = {
321 .dev_start = eth_kni_dev_start,
322 .dev_stop = eth_kni_dev_stop,
323 .dev_configure = eth_kni_dev_configure,
324 .dev_infos_get = eth_kni_dev_info,
325 .rx_queue_setup = eth_kni_rx_queue_setup,
326 .tx_queue_setup = eth_kni_tx_queue_setup,
327 .rx_queue_release = eth_kni_queue_release,
328 .tx_queue_release = eth_kni_queue_release,
329 .link_update = eth_kni_link_update,
330 .stats_get = eth_kni_stats_get,
331 .stats_reset = eth_kni_stats_reset,
334 static struct rte_eth_dev *
335 eth_kni_create(struct rte_vdev_device *vdev,
336 struct eth_kni_args *args,
337 unsigned int numa_node)
339 struct pmd_internals *internals;
340 struct rte_eth_dev_data *data;
341 struct rte_eth_dev *eth_dev;
343 PMD_LOG(INFO, "Creating kni ethdev on numa socket %u",
346 /* reserve an ethdev entry */
347 eth_dev = rte_eth_vdev_allocate(vdev, sizeof(*internals));
351 internals = eth_dev->data->dev_private;
352 data = eth_dev->data;
353 data->nb_rx_queues = 1;
354 data->nb_tx_queues = 1;
355 data->dev_link = pmd_link;
356 data->mac_addrs = &internals->eth_addr;
358 rte_eth_random_addr(internals->eth_addr.addr_bytes);
360 eth_dev->dev_ops = ð_kni_ops;
362 internals->no_request_thread = args->no_request_thread;
370 if (is_kni_initialized == 0)
371 rte_kni_init(MAX_KNI_PORTS);
373 is_kni_initialized++;
379 eth_kni_kvargs_process(struct eth_kni_args *args, const char *params)
381 struct rte_kvargs *kvlist;
383 kvlist = rte_kvargs_parse(params, valid_arguments);
387 memset(args, 0, sizeof(struct eth_kni_args));
389 if (rte_kvargs_count(kvlist, ETH_KNI_NO_REQUEST_THREAD_ARG) == 1)
390 args->no_request_thread = 1;
392 rte_kvargs_free(kvlist);
398 eth_kni_probe(struct rte_vdev_device *vdev)
400 struct rte_eth_dev *eth_dev;
401 struct eth_kni_args args;
406 name = rte_vdev_device_name(vdev);
407 params = rte_vdev_device_args(vdev);
408 PMD_LOG(INFO, "Initializing eth_kni for %s", name);
410 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
411 eth_dev = rte_eth_dev_attach_secondary(name);
413 PMD_LOG(ERR, "Failed to probe %s", name);
416 /* TODO: request info from primary to set up Rx and Tx */
417 eth_dev->dev_ops = ð_kni_ops;
418 eth_dev->device = &vdev->device;
419 rte_eth_dev_probing_finish(eth_dev);
423 ret = eth_kni_kvargs_process(&args, params);
431 eth_dev = eth_kni_create(vdev, &args, rte_socket_id());
435 eth_dev->rx_pkt_burst = eth_kni_rx;
436 eth_dev->tx_pkt_burst = eth_kni_tx;
438 rte_eth_dev_probing_finish(eth_dev);
442 is_kni_initialized--;
443 if (is_kni_initialized == 0)
449 eth_kni_remove(struct rte_vdev_device *vdev)
451 struct rte_eth_dev *eth_dev;
452 struct pmd_internals *internals;
456 name = rte_vdev_device_name(vdev);
457 PMD_LOG(INFO, "Un-Initializing eth_kni for %s", name);
459 /* find the ethdev entry */
460 eth_dev = rte_eth_dev_allocated(name);
464 /* mac_addrs must not be freed alone because part of dev_private */
465 eth_dev->data->mac_addrs = NULL;
467 if (rte_eal_process_type() != RTE_PROC_PRIMARY)
468 return rte_eth_dev_release_port(eth_dev);
470 eth_kni_dev_stop(eth_dev);
472 internals = eth_dev->data->dev_private;
473 ret = rte_kni_release(internals->kni);
475 PMD_LOG(WARNING, "Not able to release kni for %s", name);
477 rte_eth_dev_release_port(eth_dev);
479 is_kni_initialized--;
480 if (is_kni_initialized == 0)
486 static struct rte_vdev_driver eth_kni_drv = {
487 .probe = eth_kni_probe,
488 .remove = eth_kni_remove,
491 RTE_PMD_REGISTER_VDEV(net_kni, eth_kni_drv);
492 RTE_PMD_REGISTER_PARAM_STRING(net_kni, ETH_KNI_NO_REQUEST_THREAD_ARG "=<int>");
494 RTE_INIT(eth_kni_init_log)
496 eth_kni_logtype = rte_log_register("pmd.net.kni");
497 if (eth_kni_logtype >= 0)
498 rte_log_set_level(eth_kni_logtype, RTE_LOG_NOTICE);