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numam-dpdk/drivers/net/mlx5/mlx5_trigger.c
Xueming Li b43802b4bd net/mlx5: support 16 hardware priorities 
This patch supports new 16 Verbs flow priorities by trying to create a
simple flow of priority 15. If 16 priorities not available, fallback to
traditional 8 priorities.

Verb priority mapping:
			8 priorities	>=16 priorities
Control flow:		4-7		8-15
User normal flow:	1-3		4-7
User tunnel flow:	0-2		0-3

Signed-off-by: Xueming Li <xuemingl@mellanox.com>
Acked-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
2018-04-27 18:00:56 +01:00

401 lines
9.1 KiB
C
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/* 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 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 priv *priv = dev->data->dev_private;
unsigned int i;
int ret;
/* Add memory regions to Tx queues. */
for (i = 0; i != priv->txqs_n; ++i) {
unsigned int idx = 0;
struct mlx5_mr *mr;
struct mlx5_txq_ctrl *txq_ctrl = mlx5_txq_get(dev, i);
if (!txq_ctrl)
continue;
LIST_FOREACH(mr, &priv->mr, next) {
mlx5_txq_mp2mr_reg(&txq_ctrl->txq, mr->mp, idx++);
if (idx == MLX5_PMD_TX_MP_CACHE)
break;
}
txq_alloc_elts(txq_ctrl);
txq_ctrl->ibv = mlx5_txq_ibv_new(dev, i);
if (!txq_ctrl->ibv) {
rte_errno = ENOMEM;
goto error;
}
}
ret = mlx5_tx_uar_remap(dev, priv->ctx->cmd_fd);
if (ret)
goto error;
return 0;
error:
ret = rte_errno; /* Save rte_errno before cleanup. */
mlx5_txq_stop(dev);
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 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 priv *priv = dev->data->dev_private;
unsigned int i;
int ret = 0;
for (i = 0; i != priv->rxqs_n; ++i) {
struct mlx5_rxq_ctrl *rxq_ctrl = mlx5_rxq_get(dev, i);
if (!rxq_ctrl)
continue;
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. */
mlx5_rxq_stop(dev);
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 priv *priv = dev->data->dev_private;
struct mlx5_mr *mr = NULL;
int ret;
dev->data->dev_started = 1;
DRV_LOG(DEBUG, "port %u allocating and configuring hash Rx queues",
dev->data->port_id);
rte_mempool_walk(mlx5_mp2mr_iter, priv);
ret = mlx5_txq_start(dev);
if (ret) {
DRV_LOG(ERR, "port %u Tx queue allocation failed: %s",
dev->data->port_id, strerror(rte_errno));
goto error;
}
ret = mlx5_rxq_start(dev);
if (ret) {
DRV_LOG(ERR, "port %u Rx queue allocation failed: %s",
dev->data->port_id, strerror(rte_errno));
goto error;
}
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_xstats_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;
}
dev->tx_pkt_burst = mlx5_select_tx_function(dev);
dev->rx_pkt_burst = mlx5_select_rx_function(dev);
mlx5_dev_interrupt_handler_install(dev);
return 0;
error:
ret = rte_errno; /* Save rte_errno before cleanup. */
/* Rollback. */
dev->data->dev_started = 0;
for (mr = LIST_FIRST(&priv->mr); mr; mr = LIST_FIRST(&priv->mr))
mlx5_mr_release(mr);
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 priv *priv = dev->data->dev_private;
struct mlx5_mr *mr;
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();
usleep(1000 * priv->rxqs_n);
DRV_LOG(DEBUG, "port %u cleaning up and destroying hash Rx queues",
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);
for (mr = LIST_FIRST(&priv->mr); mr; mr = LIST_FIRST(&priv->mr))
mlx5_mr_release(mr);
}
/**
* 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 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 = {
.tci = 0xffff,
};
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 = {
.tci = 0xffff,
};
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 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;
}
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