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34 #include "rte_eth_ring.h"
36 #include <rte_ethdev.h>
37 #include <rte_malloc.h>
38 #include <rte_memcpy.h>
39 #include <rte_memzone.h>
40 #include <rte_string_fns.h>
42 #include <rte_kvargs.h>
43 #include <rte_errno.h>
45 #define ETH_RING_NUMA_NODE_ACTION_ARG "nodeaction"
46 #define ETH_RING_ACTION_CREATE "CREATE"
47 #define ETH_RING_ACTION_ATTACH "ATTACH"
49 static const char *valid_arguments[] = {
50 ETH_RING_NUMA_NODE_ACTION_ARG,
61 rte_atomic64_t rx_pkts;
62 rte_atomic64_t tx_pkts;
63 rte_atomic64_t err_pkts;
66 struct pmd_internals {
67 unsigned max_rx_queues;
68 unsigned max_tx_queues;
70 struct ring_queue rx_ring_queues[RTE_PMD_RING_MAX_RX_RINGS];
71 struct ring_queue tx_ring_queues[RTE_PMD_RING_MAX_TX_RINGS];
73 struct ether_addr address;
74 enum dev_action action;
78 static struct rte_eth_link pmd_link = {
79 .link_speed = ETH_SPEED_NUM_10G,
80 .link_duplex = ETH_LINK_FULL_DUPLEX,
81 .link_status = ETH_LINK_DOWN,
82 .link_autoneg = ETH_LINK_SPEED_AUTONEG
86 eth_ring_rx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs)
88 void **ptrs = (void *)&bufs[0];
89 struct ring_queue *r = q;
90 const uint16_t nb_rx = (uint16_t)rte_ring_dequeue_burst(r->rng,
92 if (r->rng->flags & RING_F_SC_DEQ)
93 r->rx_pkts.cnt += nb_rx;
95 rte_atomic64_add(&(r->rx_pkts), nb_rx);
100 eth_ring_tx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs)
102 void **ptrs = (void *)&bufs[0];
103 struct ring_queue *r = q;
104 const uint16_t nb_tx = (uint16_t)rte_ring_enqueue_burst(r->rng,
105 ptrs, nb_bufs, NULL);
106 if (r->rng->flags & RING_F_SP_ENQ) {
107 r->tx_pkts.cnt += nb_tx;
108 r->err_pkts.cnt += nb_bufs - nb_tx;
110 rte_atomic64_add(&(r->tx_pkts), nb_tx);
111 rte_atomic64_add(&(r->err_pkts), nb_bufs - nb_tx);
117 eth_dev_configure(struct rte_eth_dev *dev __rte_unused) { return 0; }
120 eth_dev_start(struct rte_eth_dev *dev)
122 dev->data->dev_link.link_status = ETH_LINK_UP;
127 eth_dev_stop(struct rte_eth_dev *dev)
129 dev->data->dev_link.link_status = ETH_LINK_DOWN;
133 eth_dev_set_link_down(struct rte_eth_dev *dev)
135 dev->data->dev_link.link_status = ETH_LINK_DOWN;
140 eth_dev_set_link_up(struct rte_eth_dev *dev)
142 dev->data->dev_link.link_status = ETH_LINK_UP;
147 eth_rx_queue_setup(struct rte_eth_dev *dev, uint16_t rx_queue_id,
148 uint16_t nb_rx_desc __rte_unused,
149 unsigned int socket_id __rte_unused,
150 const struct rte_eth_rxconf *rx_conf __rte_unused,
151 struct rte_mempool *mb_pool __rte_unused)
153 struct pmd_internals *internals = dev->data->dev_private;
154 dev->data->rx_queues[rx_queue_id] = &internals->rx_ring_queues[rx_queue_id];
159 eth_tx_queue_setup(struct rte_eth_dev *dev, uint16_t tx_queue_id,
160 uint16_t nb_tx_desc __rte_unused,
161 unsigned int socket_id __rte_unused,
162 const struct rte_eth_txconf *tx_conf __rte_unused)
164 struct pmd_internals *internals = dev->data->dev_private;
165 dev->data->tx_queues[tx_queue_id] = &internals->tx_ring_queues[tx_queue_id];
171 eth_dev_info(struct rte_eth_dev *dev,
172 struct rte_eth_dev_info *dev_info)
174 struct pmd_internals *internals = dev->data->dev_private;
175 dev_info->max_mac_addrs = 1;
176 dev_info->max_rx_pktlen = (uint32_t)-1;
177 dev_info->max_rx_queues = (uint16_t)internals->max_rx_queues;
178 dev_info->max_tx_queues = (uint16_t)internals->max_tx_queues;
179 dev_info->min_rx_bufsize = 0;
183 eth_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
186 unsigned long rx_total = 0, tx_total = 0, tx_err_total = 0;
187 const struct pmd_internals *internal = dev->data->dev_private;
189 for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS &&
190 i < dev->data->nb_rx_queues; i++) {
191 stats->q_ipackets[i] = internal->rx_ring_queues[i].rx_pkts.cnt;
192 rx_total += stats->q_ipackets[i];
195 for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS &&
196 i < dev->data->nb_tx_queues; i++) {
197 stats->q_opackets[i] = internal->tx_ring_queues[i].tx_pkts.cnt;
198 stats->q_errors[i] = internal->tx_ring_queues[i].err_pkts.cnt;
199 tx_total += stats->q_opackets[i];
200 tx_err_total += stats->q_errors[i];
203 stats->ipackets = rx_total;
204 stats->opackets = tx_total;
205 stats->oerrors = tx_err_total;
209 eth_stats_reset(struct rte_eth_dev *dev)
212 struct pmd_internals *internal = dev->data->dev_private;
213 for (i = 0; i < dev->data->nb_rx_queues; i++)
214 internal->rx_ring_queues[i].rx_pkts.cnt = 0;
215 for (i = 0; i < dev->data->nb_tx_queues; i++) {
216 internal->tx_ring_queues[i].tx_pkts.cnt = 0;
217 internal->tx_ring_queues[i].err_pkts.cnt = 0;
222 eth_mac_addr_remove(struct rte_eth_dev *dev __rte_unused,
223 uint32_t index __rte_unused)
228 eth_mac_addr_add(struct rte_eth_dev *dev __rte_unused,
229 struct ether_addr *mac_addr __rte_unused,
230 uint32_t index __rte_unused,
231 uint32_t vmdq __rte_unused)
236 eth_queue_release(void *q __rte_unused) { ; }
238 eth_link_update(struct rte_eth_dev *dev __rte_unused,
239 int wait_to_complete __rte_unused) { return 0; }
241 static const struct eth_dev_ops ops = {
242 .dev_start = eth_dev_start,
243 .dev_stop = eth_dev_stop,
244 .dev_set_link_up = eth_dev_set_link_up,
245 .dev_set_link_down = eth_dev_set_link_down,
246 .dev_configure = eth_dev_configure,
247 .dev_infos_get = eth_dev_info,
248 .rx_queue_setup = eth_rx_queue_setup,
249 .tx_queue_setup = eth_tx_queue_setup,
250 .rx_queue_release = eth_queue_release,
251 .tx_queue_release = eth_queue_release,
252 .link_update = eth_link_update,
253 .stats_get = eth_stats_get,
254 .stats_reset = eth_stats_reset,
255 .mac_addr_remove = eth_mac_addr_remove,
256 .mac_addr_add = eth_mac_addr_add,
259 static struct rte_vdev_driver pmd_ring_drv;
262 do_eth_dev_ring_create(const char *name,
263 struct rte_ring * const rx_queues[], const unsigned nb_rx_queues,
264 struct rte_ring *const tx_queues[], const unsigned nb_tx_queues,
265 const unsigned numa_node, enum dev_action action)
267 struct rte_eth_dev_data *data = NULL;
268 struct pmd_internals *internals = NULL;
269 struct rte_eth_dev *eth_dev = NULL;
272 RTE_LOG(INFO, PMD, "Creating rings-backed ethdev on numa socket %u\n",
275 /* now do all data allocation - for eth_dev structure, dummy pci driver
276 * and internal (private) data
278 data = rte_zmalloc_socket(name, sizeof(*data), 0, numa_node);
284 data->rx_queues = rte_zmalloc_socket(name,
285 sizeof(void *) * nb_rx_queues, 0, numa_node);
286 if (data->rx_queues == NULL) {
291 data->tx_queues = rte_zmalloc_socket(name,
292 sizeof(void *) * nb_tx_queues, 0, numa_node);
293 if (data->tx_queues == NULL) {
298 internals = rte_zmalloc_socket(name, sizeof(*internals), 0, numa_node);
299 if (internals == NULL) {
304 /* reserve an ethdev entry */
305 eth_dev = rte_eth_dev_allocate(name);
306 if (eth_dev == NULL) {
311 /* now put it all together
312 * - store queue data in internals,
313 * - store numa_node info in eth_dev_data
314 * - point eth_dev_data to internals
315 * - and point eth_dev structure to new eth_dev_data structure
317 /* NOTE: we'll replace the data element, of originally allocated eth_dev
318 * so the rings are local per-process */
320 internals->action = action;
321 internals->max_rx_queues = nb_rx_queues;
322 internals->max_tx_queues = nb_tx_queues;
323 for (i = 0; i < nb_rx_queues; i++) {
324 internals->rx_ring_queues[i].rng = rx_queues[i];
325 data->rx_queues[i] = &internals->rx_ring_queues[i];
327 for (i = 0; i < nb_tx_queues; i++) {
328 internals->tx_ring_queues[i].rng = tx_queues[i];
329 data->tx_queues[i] = &internals->tx_ring_queues[i];
332 data->dev_private = internals;
333 data->port_id = eth_dev->data->port_id;
334 memmove(data->name, eth_dev->data->name, sizeof(data->name));
335 data->nb_rx_queues = (uint16_t)nb_rx_queues;
336 data->nb_tx_queues = (uint16_t)nb_tx_queues;
337 data->dev_link = pmd_link;
338 data->mac_addrs = &internals->address;
340 eth_dev->data = data;
341 eth_dev->dev_ops = &ops;
342 data->dev_flags = RTE_ETH_DEV_DETACHABLE;
343 data->kdrv = RTE_KDRV_NONE;
344 data->drv_name = pmd_ring_drv.driver.name;
345 data->numa_node = numa_node;
347 /* finally assign rx and tx ops */
348 eth_dev->rx_pkt_burst = eth_ring_rx;
349 eth_dev->tx_pkt_burst = eth_ring_tx;
351 return data->port_id;
355 rte_free(data->rx_queues);
356 rte_free(data->tx_queues);
365 rte_eth_from_rings(const char *name, struct rte_ring *const rx_queues[],
366 const unsigned nb_rx_queues,
367 struct rte_ring *const tx_queues[],
368 const unsigned nb_tx_queues,
369 const unsigned numa_node)
371 /* do some parameter checking */
372 if (rx_queues == NULL && nb_rx_queues > 0) {
376 if (tx_queues == NULL && nb_tx_queues > 0) {
380 if (nb_rx_queues > RTE_PMD_RING_MAX_RX_RINGS) {
385 return do_eth_dev_ring_create(name, rx_queues, nb_rx_queues,
386 tx_queues, nb_tx_queues, numa_node, DEV_ATTACH);
390 rte_eth_from_ring(struct rte_ring *r)
392 return rte_eth_from_rings(r->name, &r, 1, &r, 1,
393 r->memzone ? r->memzone->socket_id : SOCKET_ID_ANY);
397 eth_dev_ring_create(const char *name, const unsigned numa_node,
398 enum dev_action action)
400 /* rx and tx are so-called from point of view of first port.
401 * They are inverted from the point of view of second port
403 struct rte_ring *rxtx[RTE_PMD_RING_MAX_RX_RINGS];
405 char rng_name[RTE_RING_NAMESIZE];
406 unsigned num_rings = RTE_MIN(RTE_PMD_RING_MAX_RX_RINGS,
407 RTE_PMD_RING_MAX_TX_RINGS);
409 for (i = 0; i < num_rings; i++) {
410 snprintf(rng_name, sizeof(rng_name), "ETH_RXTX%u_%s", i, name);
411 rxtx[i] = (action == DEV_CREATE) ?
412 rte_ring_create(rng_name, 1024, numa_node,
413 RING_F_SP_ENQ|RING_F_SC_DEQ) :
414 rte_ring_lookup(rng_name);
419 if (do_eth_dev_ring_create(name, rxtx, num_rings, rxtx, num_rings,
420 numa_node, action) < 0)
426 struct node_action_pair {
429 enum dev_action action;
432 struct node_action_list {
435 struct node_action_pair *list;
438 static int parse_kvlist (const char *key __rte_unused, const char *value, void *data)
440 struct node_action_list *info = data;
447 name = strdup(value);
452 RTE_LOG(WARNING, PMD, "command line paramter is empty for ring pmd!\n");
456 node = strchr(name, ':');
458 RTE_LOG(WARNING, PMD, "could not parse node value from %s", name);
465 action = strchr(node, ':');
467 RTE_LOG(WARNING, PMD, "could not action value from %s", node);
475 * Need to do some sanity checking here
478 if (strcmp(action, ETH_RING_ACTION_ATTACH) == 0)
479 info->list[info->count].action = DEV_ATTACH;
480 else if (strcmp(action, ETH_RING_ACTION_CREATE) == 0)
481 info->list[info->count].action = DEV_CREATE;
486 info->list[info->count].node = strtol(node, &end, 10);
488 if ((errno != 0) || (*end != '\0')) {
489 RTE_LOG(WARNING, PMD, "node value %s is unparseable as a number\n", node);
493 snprintf(info->list[info->count].name, sizeof(info->list[info->count].name), "%s", name);
504 rte_pmd_ring_probe(struct rte_vdev_device *dev)
506 const char *name, *params;
507 struct rte_kvargs *kvlist = NULL;
509 struct node_action_list *info = NULL;
511 name = rte_vdev_device_name(dev);
512 params = rte_vdev_device_args(dev);
514 RTE_LOG(INFO, PMD, "Initializing pmd_ring for %s\n", name);
516 if (params == NULL || params[0] == '\0') {
517 ret = eth_dev_ring_create(name, rte_socket_id(), DEV_CREATE);
520 "Attach to pmd_ring for %s\n", name);
521 ret = eth_dev_ring_create(name, rte_socket_id(),
526 kvlist = rte_kvargs_parse(params, valid_arguments);
529 RTE_LOG(INFO, PMD, "Ignoring unsupported parameters when creating"
530 " rings-backed ethernet device\n");
531 ret = eth_dev_ring_create(name, rte_socket_id(),
535 "Attach to pmd_ring for %s\n",
537 ret = eth_dev_ring_create(name, rte_socket_id(),
542 ret = rte_kvargs_count(kvlist, ETH_RING_NUMA_NODE_ACTION_ARG);
543 info = rte_zmalloc("struct node_action_list",
544 sizeof(struct node_action_list) +
545 (sizeof(struct node_action_pair) * ret),
551 info->list = (struct node_action_pair*)(info + 1);
553 ret = rte_kvargs_process(kvlist, ETH_RING_NUMA_NODE_ACTION_ARG,
559 for (info->count = 0; info->count < info->total; info->count++) {
560 ret = eth_dev_ring_create(info->list[info->count].name,
561 info->list[info->count].node,
562 info->list[info->count].action);
564 (info->list[info->count].action == DEV_CREATE)) {
566 "Attach to pmd_ring for %s\n",
568 ret = eth_dev_ring_create(name,
569 info->list[info->count].node,
577 rte_kvargs_free(kvlist);
583 rte_pmd_ring_remove(struct rte_vdev_device *dev)
585 const char *name = rte_vdev_device_name(dev);
586 struct rte_eth_dev *eth_dev = NULL;
587 struct pmd_internals *internals = NULL;
588 struct ring_queue *r = NULL;
591 RTE_LOG(INFO, PMD, "Un-Initializing pmd_ring for %s\n", name);
596 /* find an ethdev entry */
597 eth_dev = rte_eth_dev_allocated(name);
601 eth_dev_stop(eth_dev);
603 internals = eth_dev->data->dev_private;
604 if (internals->action == DEV_CREATE) {
606 * it is only necessary to delete the rings in rx_queues because
607 * they are the same used in tx_queues
609 for (i = 0; i < eth_dev->data->nb_rx_queues; i++) {
610 r = eth_dev->data->rx_queues[i];
611 rte_ring_free(r->rng);
615 rte_free(eth_dev->data->rx_queues);
616 rte_free(eth_dev->data->tx_queues);
617 rte_free(eth_dev->data->dev_private);
619 rte_free(eth_dev->data);
621 rte_eth_dev_release_port(eth_dev);
625 static struct rte_vdev_driver pmd_ring_drv = {
626 .probe = rte_pmd_ring_probe,
627 .remove = rte_pmd_ring_remove,
630 RTE_PMD_REGISTER_VDEV(net_ring, pmd_ring_drv);
631 RTE_PMD_REGISTER_ALIAS(net_ring, eth_ring);
632 RTE_PMD_REGISTER_PARAM_STRING(net_ring,
633 ETH_RING_NUMA_NODE_ACTION_ARG "=name:node:action(ATTACH|CREATE)");