/**
* 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, negative errno value on failure.
*/
int
mlx5_dev_start(struct rte_eth_dev *dev)
{
struct priv *priv = dev->data->dev_private;
int err;
if (mlx5_is_secondary())
return -E_RTE_SECONDARY;
priv_lock(priv);
if (priv->started) {
priv_unlock(priv);
return 0;
}
DEBUG("%p: allocating and configuring hash RX queues", (void *)dev);
err = priv_create_hash_rxqs(priv);
if (!err)
err = priv_rehash_flows(priv);
if (!err)
priv->started = 1;
else {
ERROR("%p: an error occurred while configuring hash RX queues:"
" %s",
(void *)priv, strerror(err));
/* Rollback. */
priv_special_flow_disable_all(priv);
priv_mac_addrs_disable(priv);
priv_destroy_hash_rxqs(priv);
}
if (dev->data->dev_conf.fdir_conf.mode != RTE_FDIR_MODE_NONE)
priv_fdir_enable(priv);
priv_dev_interrupt_handler_install(priv, dev);
priv_unlock(priv);
return -err;
}
/**
* DPDK callback to close the device.
*
* Destroy all queues and objects, free memory.
*
* @param dev
* Pointer to Ethernet device structure.
*/
static void
mlx5_dev_close(struct rte_eth_dev *dev)
{
struct priv *priv = mlx5_get_priv(dev);
unsigned int i;
priv_lock(priv);
DEBUG("%p: closing device \"%s\"",
(void *)dev,
((priv->ctx != NULL) ? priv->ctx->device->name : ""));
/* In case mlx5_dev_stop() has not been called. */
priv_dev_interrupt_handler_uninstall(priv, dev);
priv_special_flow_disable_all(priv);
priv_mac_addrs_disable(priv);
priv_destroy_hash_rxqs(priv);
/* Remove flow director elements. */
priv_fdir_disable(priv);
priv_fdir_delete_filters_list(priv);
/* Prevent crashes when queues are still in use. */
dev->rx_pkt_burst = removed_rx_burst;
dev->tx_pkt_burst = removed_tx_burst;
if (priv->rxqs != NULL) {
/* XXX race condition if mlx5_rx_burst() is still running. */
usleep(1000);
for (i = 0; (i != priv->rxqs_n); ++i) {
struct rxq *rxq = (*priv->rxqs)[i];
struct rxq_ctrl *rxq_ctrl;
if (rxq == NULL)
continue;
rxq_ctrl = container_of(rxq, struct rxq_ctrl, rxq);
(*priv->rxqs)[i] = NULL;
rxq_cleanup(rxq_ctrl);
rte_free(rxq_ctrl);
}
priv->rxqs_n = 0;
priv->rxqs = NULL;
}
/**
* 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;
if (mlx5_is_secondary())
return;
priv_lock(priv);
if (!priv->started) {
priv_unlock(priv);
return;
}
DEBUG("%p: cleaning up and destroying hash RX queues", (void *)dev);
priv_special_flow_disable_all(priv);
priv_mac_addrs_disable(priv);
priv_destroy_hash_rxqs(priv);
priv_fdir_disable(priv);
priv_dev_interrupt_handler_uninstall(priv, dev);
priv->started = 0;
priv_unlock(priv);
}
/**
* DPDK callback to close the device.
*
* Destroy all queues and objects, free memory.
*
* @param dev
* Pointer to Ethernet device structure.
*/
static void
mlx5_dev_close(struct rte_eth_dev *dev)
{
struct priv *priv = dev->data->dev_private;
void *tmp;
unsigned int i;
priv_lock(priv);
DEBUG("%p: closing device \"%s\"",
(void *)dev,
((priv->ctx != NULL) ? priv->ctx->device->name : ""));
/* In case mlx5_dev_stop() has not been called. */
priv_dev_interrupt_handler_uninstall(priv, dev);
priv_allmulticast_disable(priv);
priv_promiscuous_disable(priv);
priv_mac_addrs_disable(priv);
priv_destroy_hash_rxqs(priv);
/* Prevent crashes when queues are still in use. */
dev->rx_pkt_burst = removed_rx_burst;
dev->tx_pkt_burst = removed_tx_burst;
if (priv->rxqs != NULL) {
/* XXX race condition if mlx5_rx_burst() is still running. */
usleep(1000);
for (i = 0; (i != priv->rxqs_n); ++i) {
tmp = (*priv->rxqs)[i];
if (tmp == NULL)
continue;
(*priv->rxqs)[i] = NULL;
rxq_cleanup(tmp);
rte_free(tmp);
}
priv->rxqs_n = 0;
priv->rxqs = NULL;
}
if (priv->txqs != NULL) {
/* XXX race condition if mlx5_tx_burst() is still running. */
usleep(1000);
for (i = 0; (i != priv->txqs_n); ++i) {
tmp = (*priv->txqs)[i];
if (tmp == NULL)
continue;
(*priv->txqs)[i] = NULL;
txq_cleanup(tmp);
rte_free(tmp);
}
priv->txqs_n = 0;
priv->txqs = NULL;
}
if (priv->pd != NULL) {
assert(priv->ctx != NULL);
claim_zero(ibv_dealloc_pd(priv->pd));
claim_zero(ibv_close_device(priv->ctx));
} else
assert(priv->ctx == NULL);
if (priv->rss_conf != NULL) {
for (i = 0; (i != hash_rxq_init_n); ++i)
rte_free((*priv->rss_conf)[i]);
rte_free(priv->rss_conf);
}
priv_unlock(priv);
memset(priv, 0, sizeof(*priv));
}