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/* SPDX-License-Identifier: Apache-2.0
* Copyright (c) 2023 Cisco Systems, Inc.
*/
#include <vnet/vnet.h>
#include <vnet/ethernet/ethernet.h>
#include <vnet/dev/dev.h>
#include <vnet/dev/counters.h>
#include <vnet/dev/log.h>
VLIB_REGISTER_LOG_CLASS (dev_log, static) = {
.class_name = "dev",
.subclass_name = "error",
};
void
vnet_dev_rx_queue_free (vlib_main_t *vm, vnet_dev_rx_queue_t *rxq)
{
vnet_dev_port_t *port = rxq->port;
vnet_dev_t *dev = port->dev;
log_debug (dev, "queue %u", rxq->queue_id);
if (port->rx_queue_ops.free)
port->rx_queue_ops.free (vm, rxq);
vnet_dev_rx_queue_free_counters (vm, rxq);
pool_put_index (port->rx_queues, rxq->index);
clib_mem_free (rxq);
}
vnet_dev_rv_t
vnet_dev_rx_queue_alloc (vlib_main_t *vm, vnet_dev_port_t *port,
u16 queue_size)
{
vnet_dev_main_t *dm = &vnet_dev_main;
vnet_dev_rx_queue_t *rxq, **qp;
vnet_dev_t *dev = port->dev;
vnet_dev_rv_t rv = VNET_DEV_OK;
u16 n_threads = vlib_get_n_threads ();
vnet_dev_port_validate (vm, port);
log_debug (dev, "port %u queue_size %u", port->port_id, queue_size);
if (pool_elts (port->rx_queues) == port->attr.max_rx_queues)
return VNET_DEV_ERR_NO_AVAIL_QUEUES;
rxq = vnet_dev_alloc_with_data (sizeof (vnet_dev_port_t),
port->rx_queue_config.data_size);
pool_get (port->rx_queues, qp);
qp[0] = rxq;
rxq->enabled = 1;
rxq->port = port;
rxq->size = queue_size;
rxq->index = qp - port->rx_queues;
/* default queue id - can be changed by driver */
rxq->queue_id = qp - port->rx_queues;
ASSERT (rxq->queue_id < port->attr.max_rx_queues);
if (n_threads > 1)
{
rxq->rx_thread_index = dm->next_rx_queue_thread++;
if (dm->next_rx_queue_thread >= n_threads)
dm->next_rx_queue_thread = 1;
}
if (port->rx_queue_ops.alloc)
rv = port->rx_queue_ops.alloc (vm, rxq);
if (rv != VNET_DEV_OK)
{
log_err (dev, "driver rejected rx queue add with rv %d", rv);
vnet_dev_rx_queue_free (vm, rxq);
}
else
log_debug (dev, "queue %u added, assigned to thread %u", rxq->queue_id,
rxq->rx_thread_index);
return rv;
}
vnet_dev_rv_t
vnet_dev_rx_queue_start (vlib_main_t *vm, vnet_dev_rx_queue_t *rxq)
{
vnet_dev_rv_t rv = VNET_DEV_OK;
if (rxq->port->rx_queue_ops.start)
rv = rxq->port->rx_queue_ops.start (vm, rxq);
if (rv == VNET_DEV_OK)
rxq->started = 1;
return rv;
}
void
vnet_dev_rx_queue_stop (vlib_main_t *vm, vnet_dev_rx_queue_t *rxq)
{
if (rxq->port->rx_queue_ops.stop)
rxq->port->rx_queue_ops.stop (vm, rxq);
vlib_node_set_state (vm, vnet_dev_get_port_rx_node_index (rxq->port),
VLIB_NODE_STATE_DISABLED);
rxq->started = 0;
}
void
vnet_dev_tx_queue_free (vlib_main_t *vm, vnet_dev_tx_queue_t *txq)
{
vnet_dev_port_t *port = txq->port;
vnet_dev_t *dev = port->dev;
vnet_dev_port_validate (vm, port);
log_debug (dev, "queue %u", txq->queue_id);
if (port->tx_queue_ops.free)
port->tx_queue_ops.free (vm, txq);
clib_bitmap_free (txq->assigned_threads);
vnet_dev_tx_queue_free_counters (vm, txq);
pool_put_index (port->tx_queues, txq->index);
clib_mem_free (txq);
}
vnet_dev_rv_t
vnet_dev_tx_queue_alloc (vlib_main_t *vm, vnet_dev_port_t *port,
u16 queue_size)
{
vnet_dev_tx_queue_t *txq, **qp;
vnet_dev_t *dev = port->dev;
vnet_dev_rv_t rv = VNET_DEV_OK;
log_debug (dev, "port %u size %u", port->port_id, queue_size);
if (pool_elts (port->tx_queues) == port->attr.max_tx_queues)
return VNET_DEV_ERR_NO_AVAIL_QUEUES;
txq = vnet_dev_alloc_with_data (sizeof (vnet_dev_port_t),
port->tx_queue_config.data_size);
pool_get (port->tx_queues, qp);
qp[0] = txq;
txq->enabled = 1;
txq->port = port;
txq->size = queue_size;
txq->index = qp - port->tx_queues;
/* default queue id - can be changed by driver */
txq->queue_id = qp - port->tx_queues;
ASSERT (txq->queue_id < port->attr.max_tx_queues);
if (port->tx_queue_ops.alloc)
rv = port->tx_queue_ops.alloc (vm, txq);
if (rv != VNET_DEV_OK)
{
log_err (dev, "driver rejected tx queue alloc with rv %d", rv);
vnet_dev_tx_queue_free (vm, txq);
}
else
log_debug (dev, "queue %u added", txq->queue_id);
return rv;
}
vnet_dev_rv_t
vnet_dev_tx_queue_start (vlib_main_t *vm, vnet_dev_tx_queue_t *txq)
{
vnet_dev_rv_t rv = VNET_DEV_OK;
if (txq->port->tx_queue_ops.start)
rv = txq->port->tx_queue_ops.start (vm, txq);
if (rv == VNET_DEV_OK)
txq->started = 1;
return rv;
}
void
vnet_dev_tx_queue_stop (vlib_main_t *vm, vnet_dev_tx_queue_t *txq)
{
if (txq->port->tx_queue_ops.stop)
txq->port->tx_queue_ops.stop (vm, txq);
txq->started = 0;
}
void
vnet_dev_rx_queue_add_counters (vlib_main_t *vm, vnet_dev_rx_queue_t *rxq,
vnet_dev_counter_t *counters, u16 n_counters)
{
rxq->counter_main = vnet_dev_counters_alloc (
vm, counters, n_counters, "%s port %u rx-queue %u counters",
rxq->port->dev->device_id, rxq->port->port_id, rxq->queue_id);
}
void
vnet_dev_rx_queue_free_counters (vlib_main_t *vm, vnet_dev_rx_queue_t *rxq)
{
if (rxq->counter_main)
vnet_dev_counters_free (vm, rxq->counter_main);
}
void
vnet_dev_tx_queue_add_counters (vlib_main_t *vm, vnet_dev_tx_queue_t *txq,
vnet_dev_counter_t *counters, u16 n_counters)
{
txq->counter_main = vnet_dev_counters_alloc (
vm, counters, n_counters, "%s port %u tx-queue %u counters",
txq->port->dev->device_id, txq->port->port_id, txq->queue_id);
}
void
vnet_dev_tx_queue_free_counters (vlib_main_t *vm, vnet_dev_tx_queue_t *txq)
{
if (!txq->counter_main)
return;
log_debug (txq->port->dev, "free");
vnet_dev_counters_free (vm, txq->counter_main);
}
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