1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright 2015 6WIND S.A.
3 * Copyright 2015 Mellanox Technologies, Ltd
13 #include <rte_ethdev_driver.h>
14 #include <rte_bus_pci.h>
16 #include <rte_common.h>
17 #include <rte_interrupts.h>
18 #include <rte_malloc.h>
19 #include <rte_string_fns.h>
20 #include <rte_rwlock.h>
21 #include <rte_cycles.h>
23 #include <mlx5_malloc.h>
25 #include "mlx5_rxtx.h"
26 #include "mlx5_autoconf.h"
29 * Get the interface index from device name.
32 * Pointer to Ethernet device.
35 * Nonzero interface index on success, zero otherwise and rte_errno is set.
38 mlx5_ifindex(const struct rte_eth_dev *dev)
40 struct mlx5_priv *priv = dev->data->dev_private;
44 MLX5_ASSERT(priv->if_index);
45 ifindex = priv->bond_ifindex > 0 ? priv->bond_ifindex : priv->if_index;
52 * DPDK callback for Ethernet device configuration.
55 * Pointer to Ethernet device structure.
58 * 0 on success, a negative errno value otherwise and rte_errno is set.
61 mlx5_dev_configure(struct rte_eth_dev *dev)
63 struct mlx5_priv *priv = dev->data->dev_private;
64 unsigned int rxqs_n = dev->data->nb_rx_queues;
65 unsigned int txqs_n = dev->data->nb_tx_queues;
66 const uint8_t use_app_rss_key =
67 !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key;
70 if (use_app_rss_key &&
71 (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len !=
72 MLX5_RSS_HASH_KEY_LEN)) {
73 DRV_LOG(ERR, "port %u RSS key len must be %s Bytes long",
74 dev->data->port_id, RTE_STR(MLX5_RSS_HASH_KEY_LEN));
78 priv->rss_conf.rss_key =
79 mlx5_realloc(priv->rss_conf.rss_key, MLX5_MEM_RTE,
80 MLX5_RSS_HASH_KEY_LEN, 0, SOCKET_ID_ANY);
81 if (!priv->rss_conf.rss_key) {
82 DRV_LOG(ERR, "port %u cannot allocate RSS hash key memory (%u)",
83 dev->data->port_id, rxqs_n);
88 if ((dev->data->dev_conf.txmode.offloads &
89 DEV_TX_OFFLOAD_SEND_ON_TIMESTAMP) &&
90 rte_mbuf_dyn_tx_timestamp_register(NULL, NULL) != 0) {
91 DRV_LOG(ERR, "port %u cannot register Tx timestamp field/flag",
95 memcpy(priv->rss_conf.rss_key,
97 dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key :
99 MLX5_RSS_HASH_KEY_LEN);
100 priv->rss_conf.rss_key_len = MLX5_RSS_HASH_KEY_LEN;
101 priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf;
102 priv->rxqs = (void *)dev->data->rx_queues;
103 priv->txqs = (void *)dev->data->tx_queues;
104 if (txqs_n != priv->txqs_n) {
105 DRV_LOG(INFO, "port %u Tx queues number update: %u -> %u",
106 dev->data->port_id, priv->txqs_n, txqs_n);
107 priv->txqs_n = txqs_n;
109 if (rxqs_n > priv->config.ind_table_max_size) {
110 DRV_LOG(ERR, "port %u cannot handle this many Rx queues (%u)",
111 dev->data->port_id, rxqs_n);
115 if (rxqs_n != priv->rxqs_n) {
116 DRV_LOG(INFO, "port %u Rx queues number update: %u -> %u",
117 dev->data->port_id, priv->rxqs_n, rxqs_n);
118 priv->rxqs_n = rxqs_n;
120 priv->skip_default_rss_reta = 0;
121 ret = mlx5_proc_priv_init(dev);
128 * Configure default RSS reta.
131 * Pointer to Ethernet device structure.
134 * 0 on success, a negative errno value otherwise and rte_errno is set.
137 mlx5_dev_configure_rss_reta(struct rte_eth_dev *dev)
139 struct mlx5_priv *priv = dev->data->dev_private;
140 unsigned int rxqs_n = dev->data->nb_rx_queues;
143 unsigned int reta_idx_n;
145 unsigned int *rss_queue_arr = NULL;
146 unsigned int rss_queue_n = 0;
148 if (priv->skip_default_rss_reta)
150 rss_queue_arr = mlx5_malloc(0, rxqs_n * sizeof(unsigned int), 0,
152 if (!rss_queue_arr) {
153 DRV_LOG(ERR, "port %u cannot allocate RSS queue list (%u)",
154 dev->data->port_id, rxqs_n);
158 for (i = 0, j = 0; i < rxqs_n; i++) {
159 struct mlx5_rxq_data *rxq_data;
160 struct mlx5_rxq_ctrl *rxq_ctrl;
162 rxq_data = (*priv->rxqs)[i];
163 rxq_ctrl = container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
164 if (rxq_ctrl && rxq_ctrl->type == MLX5_RXQ_TYPE_STANDARD)
165 rss_queue_arr[j++] = i;
168 if (rss_queue_n > priv->config.ind_table_max_size) {
169 DRV_LOG(ERR, "port %u cannot handle this many Rx queues (%u)",
170 dev->data->port_id, rss_queue_n);
172 mlx5_free(rss_queue_arr);
175 DRV_LOG(INFO, "port %u Rx queues number update: %u -> %u",
176 dev->data->port_id, priv->rxqs_n, rxqs_n);
177 priv->rxqs_n = rxqs_n;
179 * If the requested number of RX queues is not a power of two,
180 * use the maximum indirection table size for better balancing.
181 * The result is always rounded to the next power of two.
183 reta_idx_n = (1 << log2above((rss_queue_n & (rss_queue_n - 1)) ?
184 priv->config.ind_table_max_size :
186 ret = mlx5_rss_reta_index_resize(dev, reta_idx_n);
188 mlx5_free(rss_queue_arr);
192 * When the number of RX queues is not a power of two,
193 * the remaining table entries are padded with reused WQs
194 * and hashes are not spread uniformly.
196 for (i = 0, j = 0; (i != reta_idx_n); ++i) {
197 (*priv->reta_idx)[i] = rss_queue_arr[j];
198 if (++j == rss_queue_n)
201 mlx5_free(rss_queue_arr);
206 * Sets default tuning parameters.
209 * Pointer to Ethernet device.
211 * Info structure output buffer.
214 mlx5_set_default_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
216 struct mlx5_priv *priv = dev->data->dev_private;
218 /* Minimum CPU utilization. */
219 info->default_rxportconf.ring_size = 256;
220 info->default_txportconf.ring_size = 256;
221 info->default_rxportconf.burst_size = MLX5_RX_DEFAULT_BURST;
222 info->default_txportconf.burst_size = MLX5_TX_DEFAULT_BURST;
223 if ((priv->link_speed_capa & ETH_LINK_SPEED_200G) |
224 (priv->link_speed_capa & ETH_LINK_SPEED_100G)) {
225 info->default_rxportconf.nb_queues = 16;
226 info->default_txportconf.nb_queues = 16;
227 if (dev->data->nb_rx_queues > 2 ||
228 dev->data->nb_tx_queues > 2) {
229 /* Max Throughput. */
230 info->default_rxportconf.ring_size = 2048;
231 info->default_txportconf.ring_size = 2048;
234 info->default_rxportconf.nb_queues = 8;
235 info->default_txportconf.nb_queues = 8;
236 if (dev->data->nb_rx_queues > 2 ||
237 dev->data->nb_tx_queues > 2) {
238 /* Max Throughput. */
239 info->default_rxportconf.ring_size = 4096;
240 info->default_txportconf.ring_size = 4096;
246 * Sets tx mbuf limiting parameters.
249 * Pointer to Ethernet device.
251 * Info structure output buffer.
254 mlx5_set_txlimit_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
256 struct mlx5_priv *priv = dev->data->dev_private;
257 struct mlx5_dev_config *config = &priv->config;
261 inlen = (config->txq_inline_max == MLX5_ARG_UNSET) ?
262 MLX5_SEND_DEF_INLINE_LEN :
263 (unsigned int)config->txq_inline_max;
264 MLX5_ASSERT(config->txq_inline_min >= 0);
265 inlen = RTE_MAX(inlen, (unsigned int)config->txq_inline_min);
266 inlen = RTE_MIN(inlen, MLX5_WQE_SIZE_MAX +
267 MLX5_ESEG_MIN_INLINE_SIZE -
270 MLX5_WQE_DSEG_SIZE * 2);
271 nb_max = (MLX5_WQE_SIZE_MAX +
272 MLX5_ESEG_MIN_INLINE_SIZE -
276 inlen) / MLX5_WSEG_SIZE;
277 info->tx_desc_lim.nb_seg_max = nb_max;
278 info->tx_desc_lim.nb_mtu_seg_max = nb_max;
282 * DPDK callback to get information about the device.
285 * Pointer to Ethernet device structure.
287 * Info structure output buffer.
290 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
292 struct mlx5_priv *priv = dev->data->dev_private;
293 struct mlx5_dev_config *config = &priv->config;
296 /* FIXME: we should ask the device for these values. */
297 info->min_rx_bufsize = 32;
298 info->max_rx_pktlen = 65536;
299 info->max_lro_pkt_size = MLX5_MAX_LRO_SIZE;
301 * Since we need one CQ per QP, the limit is the minimum number
302 * between the two values.
304 max = RTE_MIN(priv->sh->device_attr.max_cq,
305 priv->sh->device_attr.max_qp);
306 /* max_rx_queues is uint16_t. */
307 max = RTE_MIN(max, (unsigned int)UINT16_MAX);
308 info->max_rx_queues = max;
309 info->max_tx_queues = max;
310 info->max_mac_addrs = MLX5_MAX_UC_MAC_ADDRESSES;
311 info->rx_queue_offload_capa = mlx5_get_rx_queue_offloads(dev);
312 info->rx_seg_capa.max_nseg = MLX5_MAX_RXQ_NSEG;
313 info->rx_seg_capa.multi_pools = 1;
314 info->rx_seg_capa.offset_allowed = 1;
315 info->rx_seg_capa.offset_align_log2 = 0;
316 info->rx_offload_capa = (mlx5_get_rx_port_offloads() |
317 info->rx_queue_offload_capa);
318 info->tx_offload_capa = mlx5_get_tx_port_offloads(dev);
319 info->if_index = mlx5_ifindex(dev);
320 info->reta_size = priv->reta_idx_n ?
321 priv->reta_idx_n : config->ind_table_max_size;
322 info->hash_key_size = MLX5_RSS_HASH_KEY_LEN;
323 info->speed_capa = priv->link_speed_capa;
324 info->flow_type_rss_offloads = ~MLX5_RSS_HF_MASK;
325 mlx5_set_default_params(dev, info);
326 mlx5_set_txlimit_params(dev, info);
327 info->switch_info.name = dev->data->name;
328 info->switch_info.domain_id = priv->domain_id;
329 info->switch_info.port_id = priv->representor_id;
330 if (priv->representor) {
333 if (priv->pf_bond >= 0) {
335 * Switch port ID is opaque value with driver defined
336 * format. Push the PF index in bonding configurations
337 * in upper four bits of port ID. If we get too many
338 * representors (more than 4K) or PFs (more than 15)
339 * this approach must be reconsidered.
341 if ((info->switch_info.port_id >>
342 MLX5_PORT_ID_BONDING_PF_SHIFT) ||
343 priv->pf_bond > MLX5_PORT_ID_BONDING_PF_MASK) {
344 DRV_LOG(ERR, "can't update switch port ID"
345 " for bonding device");
349 info->switch_info.port_id |=
350 priv->pf_bond << MLX5_PORT_ID_BONDING_PF_SHIFT;
352 MLX5_ETH_FOREACH_DEV(port_id, priv->pci_dev) {
353 struct mlx5_priv *opriv =
354 rte_eth_devices[port_id].data->dev_private;
357 opriv->representor ||
358 opriv->sh != priv->sh ||
359 opriv->domain_id != priv->domain_id)
362 * Override switch name with that of the master
365 info->switch_info.name = opriv->dev_data->name;
373 * Get firmware version of a device.
376 * Ethernet device port.
378 * String output allocated by caller.
380 * Size of the output string, including terminating null byte.
383 * 0 on success, or the size of the non truncated string if too big.
386 mlx5_fw_version_get(struct rte_eth_dev *dev, char *fw_ver, size_t fw_size)
388 struct mlx5_priv *priv = dev->data->dev_private;
389 struct mlx5_dev_attr *attr = &priv->sh->device_attr;
390 size_t size = strnlen(attr->fw_ver, sizeof(attr->fw_ver)) + 1;
395 strlcpy(fw_ver, attr->fw_ver, fw_size);
400 * Get supported packet types.
403 * Pointer to Ethernet device structure.
406 * A pointer to the supported Packet types array.
409 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev)
411 static const uint32_t ptypes[] = {
412 /* refers to rxq_cq_to_pkt_type() */
414 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
415 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
416 RTE_PTYPE_L4_NONFRAG,
420 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
421 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
422 RTE_PTYPE_INNER_L4_NONFRAG,
423 RTE_PTYPE_INNER_L4_FRAG,
424 RTE_PTYPE_INNER_L4_TCP,
425 RTE_PTYPE_INNER_L4_UDP,
429 if (dev->rx_pkt_burst == mlx5_rx_burst ||
430 dev->rx_pkt_burst == mlx5_rx_burst_mprq ||
431 dev->rx_pkt_burst == mlx5_rx_burst_vec ||
432 dev->rx_pkt_burst == mlx5_rx_burst_mprq_vec)
438 * DPDK callback to change the MTU.
441 * Pointer to Ethernet device structure.
446 * 0 on success, a negative errno value otherwise and rte_errno is set.
449 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
451 struct mlx5_priv *priv = dev->data->dev_private;
452 uint16_t kern_mtu = 0;
455 ret = mlx5_get_mtu(dev, &kern_mtu);
458 /* Set kernel interface MTU first. */
459 ret = mlx5_set_mtu(dev, mtu);
462 ret = mlx5_get_mtu(dev, &kern_mtu);
465 if (kern_mtu == mtu) {
467 DRV_LOG(DEBUG, "port %u adapter MTU set to %u",
468 dev->data->port_id, mtu);
476 * Configure the RX function to use.
479 * Pointer to private data structure.
482 * Pointer to selected Rx burst function.
485 mlx5_select_rx_function(struct rte_eth_dev *dev)
487 eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst;
489 MLX5_ASSERT(dev != NULL);
490 if (mlx5_check_vec_rx_support(dev) > 0) {
491 if (mlx5_mprq_enabled(dev)) {
492 rx_pkt_burst = mlx5_rx_burst_mprq_vec;
493 DRV_LOG(DEBUG, "port %u selected vectorized"
494 " MPRQ Rx function", dev->data->port_id);
496 rx_pkt_burst = mlx5_rx_burst_vec;
497 DRV_LOG(DEBUG, "port %u selected vectorized"
498 " SPRQ Rx function", dev->data->port_id);
500 } else if (mlx5_mprq_enabled(dev)) {
501 rx_pkt_burst = mlx5_rx_burst_mprq;
502 DRV_LOG(DEBUG, "port %u selected MPRQ Rx function",
505 DRV_LOG(DEBUG, "port %u selected SPRQ Rx function",
512 * Get the E-Switch parameters by port id.
517 * Device port id is valid, skip check. This flag is useful
518 * when trials are performed from probing and device is not
519 * flagged as valid yet (in attaching process).
520 * @param[out] es_domain_id
521 * E-Switch domain id.
522 * @param[out] es_port_id
523 * The port id of the port in the E-Switch.
526 * pointer to device private data structure containing data needed
527 * on success, NULL otherwise and rte_errno is set.
530 mlx5_port_to_eswitch_info(uint16_t port, bool valid)
532 struct rte_eth_dev *dev;
533 struct mlx5_priv *priv;
535 if (port >= RTE_MAX_ETHPORTS) {
539 if (!valid && !rte_eth_dev_is_valid_port(port)) {
543 dev = &rte_eth_devices[port];
544 priv = dev->data->dev_private;
545 if (!(priv->representor || priv->master)) {
553 * Get the E-Switch parameters by device instance.
557 * @param[out] es_domain_id
558 * E-Switch domain id.
559 * @param[out] es_port_id
560 * The port id of the port in the E-Switch.
563 * pointer to device private data structure containing data needed
564 * on success, NULL otherwise and rte_errno is set.
567 mlx5_dev_to_eswitch_info(struct rte_eth_dev *dev)
569 struct mlx5_priv *priv;
571 priv = dev->data->dev_private;
572 if (!(priv->representor || priv->master)) {
580 * DPDK callback to retrieve hairpin capabilities.
583 * Pointer to Ethernet device structure.
585 * Storage for hairpin capability data.
588 * 0 on success, a negative errno value otherwise and rte_errno is set.
591 mlx5_hairpin_cap_get(struct rte_eth_dev *dev, struct rte_eth_hairpin_cap *cap)
593 struct mlx5_priv *priv = dev->data->dev_private;
594 struct mlx5_dev_config *config = &priv->config;
596 if (!priv->sh->devx || !config->dest_tir || !config->dv_flow_en) {
600 cap->max_nb_queues = UINT16_MAX;
601 cap->max_rx_2_tx = 1;
602 cap->max_tx_2_rx = 1;
603 cap->max_nb_desc = 8192;