Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 403 insertions, 0 deletions

diff --git a/src/seastar/dpdk/drivers/net/mlx5/mlx5_trigger.c b/src/seastar/dpdk/drivers/net/mlx5/mlx5_trigger.c
new file mode 100644
index 000000000..b7fde3575
--- /dev/null
+++ b/src/seastar/dpdk/drivers/net/mlx5/mlx5_trigger.c
@@ -0,0 +1,403 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2015 6WIND S.A.
+ * Copyright 2015 Mellanox Technologies, Ltd
+ */
+
+#include <unistd.h>
+
+#include <rte_ether.h>
+#include <rte_ethdev_driver.h>
+#include <rte_interrupts.h>
+#include <rte_alarm.h>
+
+#include "mlx5.h"
+#include "mlx5_rxtx.h"
+#include "mlx5_utils.h"
+
+/**
+ * Stop traffic on Tx queues.
+ *
+ * @param dev
+ *   Pointer to Ethernet device structure.
+ */
+static void
+mlx5_txq_stop(struct rte_eth_dev *dev)
+{
+	struct mlx5_priv *priv = dev->data->dev_private;
+	unsigned int i;
+
+	for (i = 0; i != priv->txqs_n; ++i)
+		mlx5_txq_release(dev, i);
+}
+
+/**
+ * Start traffic on Tx queues.
+ *
+ * @param dev
+ *   Pointer to Ethernet device structure.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+mlx5_txq_start(struct rte_eth_dev *dev)
+{
+	struct mlx5_priv *priv = dev->data->dev_private;
+	unsigned int i;
+	int ret;
+
+	for (i = 0; i != priv->txqs_n; ++i) {
+		struct mlx5_txq_ctrl *txq_ctrl = mlx5_txq_get(dev, i);
+
+		if (!txq_ctrl)
+			continue;
+		txq_alloc_elts(txq_ctrl);
+		txq_ctrl->ibv = mlx5_txq_ibv_new(dev, i);
+		if (!txq_ctrl->ibv) {
+			rte_errno = ENOMEM;
+			goto error;
+		}
+	}
+	return 0;
+error:
+	ret = rte_errno; /* Save rte_errno before cleanup. */
+	do {
+		mlx5_txq_release(dev, i);
+	} while (i-- != 0);
+	rte_errno = ret; /* Restore rte_errno. */
+	return -rte_errno;
+}
+
+/**
+ * Stop traffic on Rx queues.
+ *
+ * @param dev
+ *   Pointer to Ethernet device structure.
+ */
+static void
+mlx5_rxq_stop(struct rte_eth_dev *dev)
+{
+	struct mlx5_priv *priv = dev->data->dev_private;
+	unsigned int i;
+
+	for (i = 0; i != priv->rxqs_n; ++i)
+		mlx5_rxq_release(dev, i);
+}
+
+/**
+ * Start traffic on Rx queues.
+ *
+ * @param dev
+ *   Pointer to Ethernet device structure.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+mlx5_rxq_start(struct rte_eth_dev *dev)
+{
+	struct mlx5_priv *priv = dev->data->dev_private;
+	unsigned int i;
+	int ret = 0;
+
+	/* Allocate/reuse/resize mempool for Multi-Packet RQ. */
+	if (mlx5_mprq_alloc_mp(dev)) {
+		/* Should not release Rx queues but return immediately. */
+		return -rte_errno;
+	}
+	for (i = 0; i != priv->rxqs_n; ++i) {
+		struct mlx5_rxq_ctrl *rxq_ctrl = mlx5_rxq_get(dev, i);
+		struct rte_mempool *mp;
+
+		if (!rxq_ctrl)
+			continue;
+		/* Pre-register Rx mempool. */
+		mp = mlx5_rxq_mprq_enabled(&rxq_ctrl->rxq) ?
+		     rxq_ctrl->rxq.mprq_mp : rxq_ctrl->rxq.mp;
+		DRV_LOG(DEBUG,
+			"port %u Rx queue %u registering"
+			" mp %s having %u chunks",
+			dev->data->port_id, rxq_ctrl->rxq.idx,
+			mp->name, mp->nb_mem_chunks);
+		mlx5_mr_update_mp(dev, &rxq_ctrl->rxq.mr_ctrl, mp);
+		ret = rxq_alloc_elts(rxq_ctrl);
+		if (ret)
+			goto error;
+		rxq_ctrl->ibv = mlx5_rxq_ibv_new(dev, i);
+		if (!rxq_ctrl->ibv)
+			goto error;
+	}
+	return 0;
+error:
+	ret = rte_errno; /* Save rte_errno before cleanup. */
+	do {
+		mlx5_rxq_release(dev, i);
+	} while (i-- != 0);
+	rte_errno = ret; /* Restore rte_errno. */
+	return -rte_errno;
+}
+
+/**
+ * DPDK callback to start the device.
+ *
+ * Simulate device start by attaching all configured flows.
+ *
+ * @param dev
+ *   Pointer to Ethernet device structure.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+int
+mlx5_dev_start(struct rte_eth_dev *dev)
+{
+	struct mlx5_priv *priv = dev->data->dev_private;
+	int ret;
+
+	DRV_LOG(DEBUG, "port %u starting device", dev->data->port_id);
+	ret = mlx5_txq_start(dev);
+	if (ret) {
+		DRV_LOG(ERR, "port %u Tx queue allocation failed: %s",
+			dev->data->port_id, strerror(rte_errno));
+		return -rte_errno;
+	}
+	ret = mlx5_rxq_start(dev);
+	if (ret) {
+		DRV_LOG(ERR, "port %u Rx queue allocation failed: %s",
+			dev->data->port_id, strerror(rte_errno));
+		mlx5_txq_stop(dev);
+		return -rte_errno;
+	}
+	dev->data->dev_started = 1;
+	ret = mlx5_rx_intr_vec_enable(dev);
+	if (ret) {
+		DRV_LOG(ERR, "port %u Rx interrupt vector creation failed",
+			dev->data->port_id);
+		goto error;
+	}
+	mlx5_stats_init(dev);
+	ret = mlx5_traffic_enable(dev);
+	if (ret) {
+		DRV_LOG(DEBUG, "port %u failed to set defaults flows",
+			dev->data->port_id);
+		goto error;
+	}
+	ret = mlx5_flow_start(dev, &priv->flows);
+	if (ret) {
+		DRV_LOG(DEBUG, "port %u failed to set flows",
+			dev->data->port_id);
+		goto error;
+	}
+	rte_wmb();
+	dev->tx_pkt_burst = mlx5_select_tx_function(dev);
+	dev->rx_pkt_burst = mlx5_select_rx_function(dev);
+	/* Enable datapath on secondary process. */
+	mlx5_mp_req_start_rxtx(dev);
+	mlx5_dev_interrupt_handler_install(dev);
+	return 0;
+error:
+	ret = rte_errno; /* Save rte_errno before cleanup. */
+	/* Rollback. */
+	dev->data->dev_started = 0;
+	mlx5_flow_stop(dev, &priv->flows);
+	mlx5_traffic_disable(dev);
+	mlx5_txq_stop(dev);
+	mlx5_rxq_stop(dev);
+	rte_errno = ret; /* Restore rte_errno. */
+	return -rte_errno;
+}
+
+/**
+ * DPDK callback to stop the device.
+ *
+ * Simulate device stop by detaching all configured flows.
+ *
+ * @param dev
+ *   Pointer to Ethernet device structure.
+ */
+void
+mlx5_dev_stop(struct rte_eth_dev *dev)
+{
+	struct mlx5_priv *priv = dev->data->dev_private;
+
+	dev->data->dev_started = 0;
+	/* Prevent crashes when queues are still in use. */
+	dev->rx_pkt_burst = removed_rx_burst;
+	dev->tx_pkt_burst = removed_tx_burst;
+	rte_wmb();
+	/* Disable datapath on secondary process. */
+	mlx5_mp_req_stop_rxtx(dev);
+	usleep(1000 * priv->rxqs_n);
+	DRV_LOG(DEBUG, "port %u stopping device", dev->data->port_id);
+	mlx5_flow_stop(dev, &priv->flows);
+	mlx5_traffic_disable(dev);
+	mlx5_rx_intr_vec_disable(dev);
+	mlx5_dev_interrupt_handler_uninstall(dev);
+	mlx5_txq_stop(dev);
+	mlx5_rxq_stop(dev);
+}
+
+/**
+ * Enable traffic flows configured by control plane
+ *
+ * @param dev
+ *   Pointer to Ethernet device private data.
+ * @param dev
+ *   Pointer to Ethernet device structure.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+int
+mlx5_traffic_enable(struct rte_eth_dev *dev)
+{
+	struct mlx5_priv *priv = dev->data->dev_private;
+	struct rte_flow_item_eth bcast = {
+		.dst.addr_bytes = "\xff\xff\xff\xff\xff\xff",
+	};
+	struct rte_flow_item_eth ipv6_multi_spec = {
+		.dst.addr_bytes = "\x33\x33\x00\x00\x00\x00",
+	};
+	struct rte_flow_item_eth ipv6_multi_mask = {
+		.dst.addr_bytes = "\xff\xff\x00\x00\x00\x00",
+	};
+	struct rte_flow_item_eth unicast = {
+		.src.addr_bytes = "\x00\x00\x00\x00\x00\x00",
+	};
+	struct rte_flow_item_eth unicast_mask = {
+		.dst.addr_bytes = "\xff\xff\xff\xff\xff\xff",
+	};
+	const unsigned int vlan_filter_n = priv->vlan_filter_n;
+	const struct ether_addr cmp = {
+		.addr_bytes = "\x00\x00\x00\x00\x00\x00",
+	};
+	unsigned int i;
+	unsigned int j;
+	int ret;
+
+	if (priv->isolated)
+		return 0;
+	if (dev->data->promiscuous) {
+		struct rte_flow_item_eth promisc = {
+			.dst.addr_bytes = "\x00\x00\x00\x00\x00\x00",
+			.src.addr_bytes = "\x00\x00\x00\x00\x00\x00",
+			.type = 0,
+		};
+
+		ret = mlx5_ctrl_flow(dev, &promisc, &promisc);
+		if (ret)
+			goto error;
+	}
+	if (dev->data->all_multicast) {
+		struct rte_flow_item_eth multicast = {
+			.dst.addr_bytes = "\x01\x00\x00\x00\x00\x00",
+			.src.addr_bytes = "\x00\x00\x00\x00\x00\x00",
+			.type = 0,
+		};
+
+		ret = mlx5_ctrl_flow(dev, &multicast, &multicast);
+		if (ret)
+			goto error;
+	} else {
+		/* Add broadcast/multicast flows. */
+		for (i = 0; i != vlan_filter_n; ++i) {
+			uint16_t vlan = priv->vlan_filter[i];
+
+			struct rte_flow_item_vlan vlan_spec = {
+				.tci = rte_cpu_to_be_16(vlan),
+			};
+			struct rte_flow_item_vlan vlan_mask =
+				rte_flow_item_vlan_mask;
+
+			ret = mlx5_ctrl_flow_vlan(dev, &bcast, &bcast,
+						  &vlan_spec, &vlan_mask);
+			if (ret)
+				goto error;
+			ret = mlx5_ctrl_flow_vlan(dev, &ipv6_multi_spec,
+						  &ipv6_multi_mask,
+						  &vlan_spec, &vlan_mask);
+			if (ret)
+				goto error;
+		}
+		if (!vlan_filter_n) {
+			ret = mlx5_ctrl_flow(dev, &bcast, &bcast);
+			if (ret)
+				goto error;
+			ret = mlx5_ctrl_flow(dev, &ipv6_multi_spec,
+					     &ipv6_multi_mask);
+			if (ret)
+				goto error;
+		}
+	}
+	/* Add MAC address flows. */
+	for (i = 0; i != MLX5_MAX_MAC_ADDRESSES; ++i) {
+		struct ether_addr *mac = &dev->data->mac_addrs[i];
+
+		if (!memcmp(mac, &cmp, sizeof(*mac)))
+			continue;
+		memcpy(&unicast.dst.addr_bytes,
+		       mac->addr_bytes,
+		       ETHER_ADDR_LEN);
+		for (j = 0; j != vlan_filter_n; ++j) {
+			uint16_t vlan = priv->vlan_filter[j];
+
+			struct rte_flow_item_vlan vlan_spec = {
+				.tci = rte_cpu_to_be_16(vlan),
+			};
+			struct rte_flow_item_vlan vlan_mask =
+				rte_flow_item_vlan_mask;
+
+			ret = mlx5_ctrl_flow_vlan(dev, &unicast,
+						  &unicast_mask,
+						  &vlan_spec,
+						  &vlan_mask);
+			if (ret)
+				goto error;
+		}
+		if (!vlan_filter_n) {
+			ret = mlx5_ctrl_flow(dev, &unicast, &unicast_mask);
+			if (ret)
+				goto error;
+		}
+	}
+	return 0;
+error:
+	ret = rte_errno; /* Save rte_errno before cleanup. */
+	mlx5_flow_list_flush(dev, &priv->ctrl_flows);
+	rte_errno = ret; /* Restore rte_errno. */
+	return -rte_errno;
+}
+
+
+/**
+ * Disable traffic flows configured by control plane
+ *
+ * @param dev
+ *   Pointer to Ethernet device private data.
+ */
+void
+mlx5_traffic_disable(struct rte_eth_dev *dev)
+{
+	struct mlx5_priv *priv = dev->data->dev_private;
+
+	mlx5_flow_list_flush(dev, &priv->ctrl_flows);
+}
+
+/**
+ * Restart traffic flows configured by control plane
+ *
+ * @param dev
+ *   Pointer to Ethernet device private data.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+int
+mlx5_traffic_restart(struct rte_eth_dev *dev)
+{
+	if (dev->data->dev_started) {
+		mlx5_traffic_disable(dev);
+		return mlx5_traffic_enable(dev);
+	}
+	return 0;
+}