1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright 2015 6WIND S.A.
3 * Copyright 2015 Mellanox Technologies, Ltd
9 #include <rte_ethdev_driver.h>
10 #include <rte_interrupts.h>
11 #include <rte_alarm.h>
14 #include "mlx5_rxtx.h"
15 #include "mlx5_utils.h"
18 * Stop traffic on Tx queues.
21 * Pointer to Ethernet device structure.
24 mlx5_txq_stop(struct rte_eth_dev *dev)
26 struct mlx5_priv *priv = dev->data->dev_private;
29 for (i = 0; i != priv->txqs_n; ++i)
30 mlx5_txq_release(dev, i);
34 * Start traffic on Tx queues.
37 * Pointer to Ethernet device structure.
40 * 0 on success, a negative errno value otherwise and rte_errno is set.
43 mlx5_txq_start(struct rte_eth_dev *dev)
45 struct mlx5_priv *priv = dev->data->dev_private;
49 for (i = 0; i != priv->txqs_n; ++i) {
50 struct mlx5_txq_ctrl *txq_ctrl = mlx5_txq_get(dev, i);
54 txq_alloc_elts(txq_ctrl);
55 txq_ctrl->ibv = mlx5_txq_ibv_new(dev, i);
61 ret = mlx5_tx_uar_remap(dev, priv->ctx->cmd_fd);
63 /* Adjust index for rollback. */
69 ret = rte_errno; /* Save rte_errno before cleanup. */
71 mlx5_txq_release(dev, i);
73 rte_errno = ret; /* Restore rte_errno. */
78 * Stop traffic on Rx queues.
81 * Pointer to Ethernet device structure.
84 mlx5_rxq_stop(struct rte_eth_dev *dev)
86 struct mlx5_priv *priv = dev->data->dev_private;
89 for (i = 0; i != priv->rxqs_n; ++i)
90 mlx5_rxq_release(dev, i);
94 * Start traffic on Rx queues.
97 * Pointer to Ethernet device structure.
100 * 0 on success, a negative errno value otherwise and rte_errno is set.
103 mlx5_rxq_start(struct rte_eth_dev *dev)
105 struct mlx5_priv *priv = dev->data->dev_private;
109 /* Allocate/reuse/resize mempool for Multi-Packet RQ. */
110 if (mlx5_mprq_alloc_mp(dev)) {
111 /* Should not release Rx queues but return immediately. */
114 for (i = 0; i != priv->rxqs_n; ++i) {
115 struct mlx5_rxq_ctrl *rxq_ctrl = mlx5_rxq_get(dev, i);
116 struct rte_mempool *mp;
120 /* Pre-register Rx mempool. */
121 mp = mlx5_rxq_mprq_enabled(&rxq_ctrl->rxq) ?
122 rxq_ctrl->rxq.mprq_mp : rxq_ctrl->rxq.mp;
124 "port %u Rx queue %u registering"
125 " mp %s having %u chunks",
126 dev->data->port_id, rxq_ctrl->idx,
127 mp->name, mp->nb_mem_chunks);
128 mlx5_mr_update_mp(dev, &rxq_ctrl->rxq.mr_ctrl, mp);
129 ret = rxq_alloc_elts(rxq_ctrl);
132 rxq_ctrl->ibv = mlx5_rxq_ibv_new(dev, i);
138 ret = rte_errno; /* Save rte_errno before cleanup. */
140 mlx5_rxq_release(dev, i);
142 rte_errno = ret; /* Restore rte_errno. */
147 * DPDK callback to start the device.
149 * Simulate device start by attaching all configured flows.
152 * Pointer to Ethernet device structure.
155 * 0 on success, a negative errno value otherwise and rte_errno is set.
158 mlx5_dev_start(struct rte_eth_dev *dev)
160 struct mlx5_priv *priv = dev->data->dev_private;
163 DRV_LOG(DEBUG, "port %u starting device", dev->data->port_id);
164 ret = mlx5_txq_start(dev);
166 DRV_LOG(ERR, "port %u Tx queue allocation failed: %s",
167 dev->data->port_id, strerror(rte_errno));
170 ret = mlx5_rxq_start(dev);
172 DRV_LOG(ERR, "port %u Rx queue allocation failed: %s",
173 dev->data->port_id, strerror(rte_errno));
177 dev->data->dev_started = 1;
178 ret = mlx5_rx_intr_vec_enable(dev);
180 DRV_LOG(ERR, "port %u Rx interrupt vector creation failed",
184 mlx5_stats_init(dev);
185 ret = mlx5_traffic_enable(dev);
187 DRV_LOG(DEBUG, "port %u failed to set defaults flows",
191 ret = mlx5_flow_start(dev, &priv->flows);
193 DRV_LOG(DEBUG, "port %u failed to set flows",
197 dev->tx_pkt_burst = mlx5_select_tx_function(dev);
198 dev->rx_pkt_burst = mlx5_select_rx_function(dev);
199 mlx5_dev_interrupt_handler_install(dev);
202 ret = rte_errno; /* Save rte_errno before cleanup. */
204 dev->data->dev_started = 0;
205 mlx5_flow_stop(dev, &priv->flows);
206 mlx5_traffic_disable(dev);
209 rte_errno = ret; /* Restore rte_errno. */
214 * DPDK callback to stop the device.
216 * Simulate device stop by detaching all configured flows.
219 * Pointer to Ethernet device structure.
222 mlx5_dev_stop(struct rte_eth_dev *dev)
224 struct mlx5_priv *priv = dev->data->dev_private;
226 dev->data->dev_started = 0;
227 /* Prevent crashes when queues are still in use. */
228 dev->rx_pkt_burst = removed_rx_burst;
229 dev->tx_pkt_burst = removed_tx_burst;
231 usleep(1000 * priv->rxqs_n);
232 DRV_LOG(DEBUG, "port %u stopping device", dev->data->port_id);
233 mlx5_flow_stop(dev, &priv->flows);
234 mlx5_traffic_disable(dev);
235 mlx5_rx_intr_vec_disable(dev);
236 mlx5_dev_interrupt_handler_uninstall(dev);
242 * Enable traffic flows configured by control plane
245 * Pointer to Ethernet device private data.
247 * Pointer to Ethernet device structure.
250 * 0 on success, a negative errno value otherwise and rte_errno is set.
253 mlx5_traffic_enable(struct rte_eth_dev *dev)
255 struct mlx5_priv *priv = dev->data->dev_private;
256 struct rte_flow_item_eth bcast = {
257 .dst.addr_bytes = "\xff\xff\xff\xff\xff\xff",
259 struct rte_flow_item_eth ipv6_multi_spec = {
260 .dst.addr_bytes = "\x33\x33\x00\x00\x00\x00",
262 struct rte_flow_item_eth ipv6_multi_mask = {
263 .dst.addr_bytes = "\xff\xff\x00\x00\x00\x00",
265 struct rte_flow_item_eth unicast = {
266 .src.addr_bytes = "\x00\x00\x00\x00\x00\x00",
268 struct rte_flow_item_eth unicast_mask = {
269 .dst.addr_bytes = "\xff\xff\xff\xff\xff\xff",
271 const unsigned int vlan_filter_n = priv->vlan_filter_n;
272 const struct ether_addr cmp = {
273 .addr_bytes = "\x00\x00\x00\x00\x00\x00",
281 if (dev->data->promiscuous) {
282 struct rte_flow_item_eth promisc = {
283 .dst.addr_bytes = "\x00\x00\x00\x00\x00\x00",
284 .src.addr_bytes = "\x00\x00\x00\x00\x00\x00",
288 ret = mlx5_ctrl_flow(dev, &promisc, &promisc);
292 if (dev->data->all_multicast) {
293 struct rte_flow_item_eth multicast = {
294 .dst.addr_bytes = "\x01\x00\x00\x00\x00\x00",
295 .src.addr_bytes = "\x00\x00\x00\x00\x00\x00",
299 ret = mlx5_ctrl_flow(dev, &multicast, &multicast);
303 /* Add broadcast/multicast flows. */
304 for (i = 0; i != vlan_filter_n; ++i) {
305 uint16_t vlan = priv->vlan_filter[i];
307 struct rte_flow_item_vlan vlan_spec = {
308 .tci = rte_cpu_to_be_16(vlan),
310 struct rte_flow_item_vlan vlan_mask =
311 rte_flow_item_vlan_mask;
313 ret = mlx5_ctrl_flow_vlan(dev, &bcast, &bcast,
314 &vlan_spec, &vlan_mask);
317 ret = mlx5_ctrl_flow_vlan(dev, &ipv6_multi_spec,
319 &vlan_spec, &vlan_mask);
323 if (!vlan_filter_n) {
324 ret = mlx5_ctrl_flow(dev, &bcast, &bcast);
327 ret = mlx5_ctrl_flow(dev, &ipv6_multi_spec,
333 /* Add MAC address flows. */
334 for (i = 0; i != MLX5_MAX_MAC_ADDRESSES; ++i) {
335 struct ether_addr *mac = &dev->data->mac_addrs[i];
337 if (!memcmp(mac, &cmp, sizeof(*mac)))
339 memcpy(&unicast.dst.addr_bytes,
342 for (j = 0; j != vlan_filter_n; ++j) {
343 uint16_t vlan = priv->vlan_filter[j];
345 struct rte_flow_item_vlan vlan_spec = {
346 .tci = rte_cpu_to_be_16(vlan),
348 struct rte_flow_item_vlan vlan_mask =
349 rte_flow_item_vlan_mask;
351 ret = mlx5_ctrl_flow_vlan(dev, &unicast,
358 if (!vlan_filter_n) {
359 ret = mlx5_ctrl_flow(dev, &unicast, &unicast_mask);
366 ret = rte_errno; /* Save rte_errno before cleanup. */
367 mlx5_flow_list_flush(dev, &priv->ctrl_flows);
368 rte_errno = ret; /* Restore rte_errno. */
374 * Disable traffic flows configured by control plane
377 * Pointer to Ethernet device private data.
380 mlx5_traffic_disable(struct rte_eth_dev *dev)
382 struct mlx5_priv *priv = dev->data->dev_private;
384 mlx5_flow_list_flush(dev, &priv->ctrl_flows);
388 * Restart traffic flows configured by control plane
391 * Pointer to Ethernet device private data.
394 * 0 on success, a negative errno value otherwise and rte_errno is set.
397 mlx5_traffic_restart(struct rte_eth_dev *dev)
399 if (dev->data->dev_started) {
400 mlx5_traffic_disable(dev);
401 return mlx5_traffic_enable(dev);