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->sh->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",
198 dev->tx_pkt_burst = mlx5_select_tx_function(dev);
199 dev->rx_pkt_burst = mlx5_select_rx_function(dev);
200 /* Enable datapath on secondary process. */
201 mlx5_mp_req_start_rxtx(dev);
202 mlx5_dev_interrupt_handler_install(dev);
205 ret = rte_errno; /* Save rte_errno before cleanup. */
207 dev->data->dev_started = 0;
208 mlx5_flow_stop(dev, &priv->flows);
209 mlx5_traffic_disable(dev);
212 rte_errno = ret; /* Restore rte_errno. */
217 * DPDK callback to stop the device.
219 * Simulate device stop by detaching all configured flows.
222 * Pointer to Ethernet device structure.
225 mlx5_dev_stop(struct rte_eth_dev *dev)
227 struct mlx5_priv *priv = dev->data->dev_private;
229 dev->data->dev_started = 0;
230 /* Prevent crashes when queues are still in use. */
231 dev->rx_pkt_burst = removed_rx_burst;
232 dev->tx_pkt_burst = removed_tx_burst;
234 /* Disable datapath on secondary process. */
235 mlx5_mp_req_stop_rxtx(dev);
236 usleep(1000 * priv->rxqs_n);
237 DRV_LOG(DEBUG, "port %u stopping device", dev->data->port_id);
238 mlx5_flow_stop(dev, &priv->flows);
239 mlx5_traffic_disable(dev);
240 mlx5_rx_intr_vec_disable(dev);
241 mlx5_dev_interrupt_handler_uninstall(dev);
247 * Enable traffic flows configured by control plane
250 * Pointer to Ethernet device private data.
252 * Pointer to Ethernet device structure.
255 * 0 on success, a negative errno value otherwise and rte_errno is set.
258 mlx5_traffic_enable(struct rte_eth_dev *dev)
260 struct mlx5_priv *priv = dev->data->dev_private;
261 struct rte_flow_item_eth bcast = {
262 .dst.addr_bytes = "\xff\xff\xff\xff\xff\xff",
264 struct rte_flow_item_eth ipv6_multi_spec = {
265 .dst.addr_bytes = "\x33\x33\x00\x00\x00\x00",
267 struct rte_flow_item_eth ipv6_multi_mask = {
268 .dst.addr_bytes = "\xff\xff\x00\x00\x00\x00",
270 struct rte_flow_item_eth unicast = {
271 .src.addr_bytes = "\x00\x00\x00\x00\x00\x00",
273 struct rte_flow_item_eth unicast_mask = {
274 .dst.addr_bytes = "\xff\xff\xff\xff\xff\xff",
276 const unsigned int vlan_filter_n = priv->vlan_filter_n;
277 const struct ether_addr cmp = {
278 .addr_bytes = "\x00\x00\x00\x00\x00\x00",
286 if (dev->data->promiscuous) {
287 struct rte_flow_item_eth promisc = {
288 .dst.addr_bytes = "\x00\x00\x00\x00\x00\x00",
289 .src.addr_bytes = "\x00\x00\x00\x00\x00\x00",
293 ret = mlx5_ctrl_flow(dev, &promisc, &promisc);
297 if (dev->data->all_multicast) {
298 struct rte_flow_item_eth multicast = {
299 .dst.addr_bytes = "\x01\x00\x00\x00\x00\x00",
300 .src.addr_bytes = "\x00\x00\x00\x00\x00\x00",
304 ret = mlx5_ctrl_flow(dev, &multicast, &multicast);
308 /* Add broadcast/multicast flows. */
309 for (i = 0; i != vlan_filter_n; ++i) {
310 uint16_t vlan = priv->vlan_filter[i];
312 struct rte_flow_item_vlan vlan_spec = {
313 .tci = rte_cpu_to_be_16(vlan),
315 struct rte_flow_item_vlan vlan_mask =
316 rte_flow_item_vlan_mask;
318 ret = mlx5_ctrl_flow_vlan(dev, &bcast, &bcast,
319 &vlan_spec, &vlan_mask);
322 ret = mlx5_ctrl_flow_vlan(dev, &ipv6_multi_spec,
324 &vlan_spec, &vlan_mask);
328 if (!vlan_filter_n) {
329 ret = mlx5_ctrl_flow(dev, &bcast, &bcast);
332 ret = mlx5_ctrl_flow(dev, &ipv6_multi_spec,
338 /* Add MAC address flows. */
339 for (i = 0; i != MLX5_MAX_MAC_ADDRESSES; ++i) {
340 struct ether_addr *mac = &dev->data->mac_addrs[i];
342 if (!memcmp(mac, &cmp, sizeof(*mac)))
344 memcpy(&unicast.dst.addr_bytes,
347 for (j = 0; j != vlan_filter_n; ++j) {
348 uint16_t vlan = priv->vlan_filter[j];
350 struct rte_flow_item_vlan vlan_spec = {
351 .tci = rte_cpu_to_be_16(vlan),
353 struct rte_flow_item_vlan vlan_mask =
354 rte_flow_item_vlan_mask;
356 ret = mlx5_ctrl_flow_vlan(dev, &unicast,
363 if (!vlan_filter_n) {
364 ret = mlx5_ctrl_flow(dev, &unicast, &unicast_mask);
371 ret = rte_errno; /* Save rte_errno before cleanup. */
372 mlx5_flow_list_flush(dev, &priv->ctrl_flows);
373 rte_errno = ret; /* Restore rte_errno. */
379 * Disable traffic flows configured by control plane
382 * Pointer to Ethernet device private data.
385 mlx5_traffic_disable(struct rte_eth_dev *dev)
387 struct mlx5_priv *priv = dev->data->dev_private;
389 mlx5_flow_list_flush(dev, &priv->ctrl_flows);
393 * Restart traffic flows configured by control plane
396 * Pointer to Ethernet device private data.
399 * 0 on success, a negative errno value otherwise and rte_errno is set.
402 mlx5_traffic_restart(struct rte_eth_dev *dev)
404 if (dev->data->dev_started) {
405 mlx5_traffic_disable(dev);
406 return mlx5_traffic_enable(dev);