err = ENOMEM;
goto port_error;
}
-
- /* Secondary processes have to use local storage for their
- * private data as well as a copy of eth_dev->data, but this
- * pointer must not be modified before burst functions are
- * actually called. */
- if (mlx5_is_secondary()) {
- struct mlx5_secondary_data *sd =
- &mlx5_secondary_data[eth_dev->data->port_id];
- sd->primary_priv = eth_dev->data->dev_private;
- if (sd->primary_priv == NULL) {
- ERROR("no private data for port %u",
- eth_dev->data->port_id);
- err = EINVAL;
- goto port_error;
- }
- sd->shared_dev_data = eth_dev->data;
- rte_spinlock_init(&sd->lock);
- memcpy(sd->data.name, sd->shared_dev_data->name,
- sizeof(sd->data.name));
- sd->data.dev_private = priv;
- sd->data.rx_mbuf_alloc_failed = 0;
- sd->data.mtu = ETHER_MTU;
- sd->data.port_id = sd->shared_dev_data->port_id;
- sd->data.mac_addrs = priv->mac;
- eth_dev->tx_pkt_burst = mlx5_tx_burst_secondary_setup;
- eth_dev->rx_pkt_burst = mlx5_rx_burst_secondary_setup;
- } else {
- eth_dev->data->dev_private = priv;
- eth_dev->data->mac_addrs = priv->mac;
- }
-
+ eth_dev->data->dev_private = priv;
+ eth_dev->data->mac_addrs = priv->mac;
eth_dev->device = &pci_dev->device;
rte_eth_copy_pci_info(eth_dev, pci_dev);
eth_dev->data->dev_flags |= RTE_ETH_DEV_DETACHABLE;
struct priv *
mlx5_get_priv(struct rte_eth_dev *dev)
{
- struct mlx5_secondary_data *sd;
-
- if (!mlx5_is_secondary())
- return dev->data->dev_private;
- sd = &mlx5_secondary_data[dev->data->port_id];
- return sd->data.dev_private;
+ return dev->data->dev_private;
}
/**
inline int
mlx5_is_secondary(void)
{
- return rte_eal_process_type() != RTE_PROC_PRIMARY;
+ return rte_eal_process_type() == RTE_PROC_SECONDARY;
}
/**
return err;
}
-/**
- * Configure secondary process queues from a private data pointer (primary
- * or secondary) and update burst callbacks. Can take place only once.
- *
- * All queues must have been previously created by the primary process to
- * avoid undefined behavior.
- *
- * @param priv
- * Private data pointer from either primary or secondary process.
- *
- * @return
- * Private data pointer from secondary process, NULL in case of error.
- */
-struct priv *
-mlx5_secondary_data_setup(struct priv *priv)
-{
- unsigned int port_id = 0;
- struct mlx5_secondary_data *sd;
- void **tx_queues;
- void **rx_queues;
- unsigned int nb_tx_queues;
- unsigned int nb_rx_queues;
- unsigned int i;
-
- /* priv must be valid at this point. */
- assert(priv != NULL);
- /* priv->dev must also be valid but may point to local memory from
- * another process, possibly with the same address and must not
- * be dereferenced yet. */
- assert(priv->dev != NULL);
- /* Determine port ID by finding out where priv comes from. */
- while (1) {
- sd = &mlx5_secondary_data[port_id];
- rte_spinlock_lock(&sd->lock);
- /* Primary process? */
- if (sd->primary_priv == priv)
- break;
- /* Secondary process? */
- if (sd->data.dev_private == priv)
- break;
- rte_spinlock_unlock(&sd->lock);
- if (++port_id == RTE_DIM(mlx5_secondary_data))
- port_id = 0;
- }
- /* Switch to secondary private structure. If private data has already
- * been updated by another thread, there is nothing else to do. */
- priv = sd->data.dev_private;
- if (priv->dev->data == &sd->data)
- goto end;
- /* Sanity checks. Secondary private structure is supposed to point
- * to local eth_dev, itself still pointing to the shared device data
- * structure allocated by the primary process. */
- assert(sd->shared_dev_data != &sd->data);
- assert(sd->data.nb_tx_queues == 0);
- assert(sd->data.tx_queues == NULL);
- assert(sd->data.nb_rx_queues == 0);
- assert(sd->data.rx_queues == NULL);
- assert(priv != sd->primary_priv);
- assert(priv->dev->data == sd->shared_dev_data);
- assert(priv->txqs_n == 0);
- assert(priv->txqs == NULL);
- assert(priv->rxqs_n == 0);
- assert(priv->rxqs == NULL);
- nb_tx_queues = sd->shared_dev_data->nb_tx_queues;
- nb_rx_queues = sd->shared_dev_data->nb_rx_queues;
- /* Allocate local storage for queues. */
- tx_queues = rte_zmalloc("secondary ethdev->tx_queues",
- sizeof(sd->data.tx_queues[0]) * nb_tx_queues,
- RTE_CACHE_LINE_SIZE);
- rx_queues = rte_zmalloc("secondary ethdev->rx_queues",
- sizeof(sd->data.rx_queues[0]) * nb_rx_queues,
- RTE_CACHE_LINE_SIZE);
- if (tx_queues == NULL || rx_queues == NULL)
- goto error;
- /* Lock to prevent control operations during setup. */
- priv_lock(priv);
- /* TX queues. */
- for (i = 0; i != nb_tx_queues; ++i) {
- struct txq *primary_txq = (*sd->primary_priv->txqs)[i];
- struct txq_ctrl *primary_txq_ctrl;
- struct txq_ctrl *txq_ctrl;
-
- if (primary_txq == NULL)
- continue;
- primary_txq_ctrl = container_of(primary_txq,
- struct txq_ctrl, txq);
- txq_ctrl = rte_calloc_socket("TXQ", 1, sizeof(*txq_ctrl) +
- (1 << primary_txq->elts_n) *
- sizeof(struct rte_mbuf *), 0,
- primary_txq_ctrl->socket);
- if (txq_ctrl != NULL) {
- if (txq_ctrl_setup(priv->dev,
- txq_ctrl,
- 1 << primary_txq->elts_n,
- primary_txq_ctrl->socket,
- NULL) == 0) {
- txq_ctrl->txq.stats.idx =
- primary_txq->stats.idx;
- tx_queues[i] = &txq_ctrl->txq;
- continue;
- }
- rte_free(txq_ctrl);
- }
- while (i) {
- txq_ctrl = tx_queues[--i];
- txq_cleanup(txq_ctrl);
- rte_free(txq_ctrl);
- }
- goto error;
- }
- /* RX queues. */
- for (i = 0; i != nb_rx_queues; ++i) {
- struct rxq_ctrl *primary_rxq =
- container_of((*sd->primary_priv->rxqs)[i],
- struct rxq_ctrl, rxq);
-
- if (primary_rxq == NULL)
- continue;
- /* Not supported yet. */
- rx_queues[i] = NULL;
- }
- /* Update everything. */
- priv->txqs = (void *)tx_queues;
- priv->txqs_n = nb_tx_queues;
- priv->rxqs = (void *)rx_queues;
- priv->rxqs_n = nb_rx_queues;
- sd->data.rx_queues = rx_queues;
- sd->data.tx_queues = tx_queues;
- sd->data.nb_rx_queues = nb_rx_queues;
- sd->data.nb_tx_queues = nb_tx_queues;
- sd->data.dev_link = sd->shared_dev_data->dev_link;
- sd->data.mtu = sd->shared_dev_data->mtu;
- memcpy(sd->data.rx_queue_state, sd->shared_dev_data->rx_queue_state,
- sizeof(sd->data.rx_queue_state));
- memcpy(sd->data.tx_queue_state, sd->shared_dev_data->tx_queue_state,
- sizeof(sd->data.tx_queue_state));
- sd->data.dev_flags = sd->shared_dev_data->dev_flags;
- /* Use local data from now on. */
- rte_mb();
- priv->dev->data = &sd->data;
- rte_mb();
- priv_select_tx_function(priv);
- priv_select_rx_function(priv);
- priv_unlock(priv);
-end:
- /* More sanity checks. */
- assert(priv->dev->data == &sd->data);
- rte_spinlock_unlock(&sd->lock);
- return priv;
-error:
- priv_unlock(priv);
- rte_free(tx_queues);
- rte_free(rx_queues);
- rte_spinlock_unlock(&sd->lock);
- return NULL;
-}
-
/**
* Configure the TX function to use.
*
priv_unlock(priv);
}
-/**
- * DPDK callback for RX in secondary processes.
- *
- * This function configures all queues from primary process information
- * if necessary before reverting to the normal RX burst callback.
- *
- * @param dpdk_rxq
- * Generic pointer to RX queue structure.
- * @param[out] pkts
- * Array to store received packets.
- * @param pkts_n
- * Maximum number of packets in array.
- *
- * @return
- * Number of packets successfully received (<= pkts_n).
- */
-uint16_t
-mlx5_rx_burst_secondary_setup(void *dpdk_rxq, struct rte_mbuf **pkts,
- uint16_t pkts_n)
-{
- struct rxq *rxq = dpdk_rxq;
- struct rxq_ctrl *rxq_ctrl = container_of(rxq, struct rxq_ctrl, rxq);
- struct priv *priv = mlx5_secondary_data_setup(rxq_ctrl->priv);
- struct priv *primary_priv;
- unsigned int index;
-
- if (priv == NULL)
- return 0;
- primary_priv =
- mlx5_secondary_data[priv->dev->data->port_id].primary_priv;
- /* Look for queue index in both private structures. */
- for (index = 0; index != priv->rxqs_n; ++index)
- if (((*primary_priv->rxqs)[index] == rxq) ||
- ((*priv->rxqs)[index] == rxq))
- break;
- if (index == priv->rxqs_n)
- return 0;
- rxq = (*priv->rxqs)[index];
- return priv->dev->rx_pkt_burst(rxq, pkts, pkts_n);
-}
-
/**
* Allocate queue vector and fill epoll fd list for Rx interrupts.
*
git.droids-corp.org / dpdk.git / commitdiff