(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->dev = eth_dev;
eth_dev->dev_ops = &mlx5_dev_ops;
eth_dev->data->mac_addrs = priv->mac;
+ TAILQ_INIT(ð_dev->link_intr_cbs);
/* Bring Ethernet device up. */
DEBUG("forcing Ethernet interface up");
.name = MLX5_DRIVER_NAME,
.id_table = mlx5_pci_id_map,
.devinit = mlx5_pci_devinit,
+ .drv_flags = RTE_PCI_DRV_INTR_LSC,
},
.dev_private_size = sizeof(struct priv)
};
#include <rte_ether.h>
#include <rte_ethdev.h>
#include <rte_spinlock.h>
+#include <rte_interrupts.h>
#ifdef PEDANTIC
#pragma GCC diagnostic error "-pedantic"
#endif
unsigned int hw_csum:1; /* Checksum offload is supported. */
unsigned int hw_csum_l2tun:1; /* Same for L2 tunnels. */
unsigned int vf:1; /* This is a VF device. */
+ unsigned int pending_alarm:1; /* An alarm is pending. */
/* RX/TX queues. */
unsigned int rxqs_n; /* RX queues array size. */
unsigned int txqs_n; /* TX queues array size. */
unsigned int hash_rxqs_n; /* Hash RX QPs array size. */
/* RSS configuration array indexed by hash RX queue type. */
struct rte_eth_rss_conf *(*rss_conf)[];
+ struct rte_intr_handle intr_handle; /* Interrupt handler. */
rte_spinlock_t lock; /* Lock for control functions. */
};
int mlx5_dev_set_flow_ctrl(struct rte_eth_dev *, struct rte_eth_fc_conf *);
int mlx5_ibv_device_to_pci_addr(const struct ibv_device *,
struct rte_pci_addr *);
+void mlx5_dev_link_status_handler(void *);
+void mlx5_dev_interrupt_handler(struct rte_intr_handle *, void *);
+void priv_dev_interrupt_handler_uninstall(struct priv *, struct rte_eth_dev *);
+void priv_dev_interrupt_handler_install(struct priv *, struct rte_eth_dev *);
/* mlx5_mac.c */
#include <linux/if.h>
#include <linux/ethtool.h>
#include <linux/sockios.h>
+#include <fcntl.h>
/* DPDK headers don't like -pedantic. */
#ifdef PEDANTIC
#include <rte_ethdev.h>
#include <rte_mbuf.h>
#include <rte_common.h>
+#include <rte_interrupts.h>
+#include <rte_alarm.h>
#ifdef PEDANTIC
#pragma GCC diagnostic error "-pedantic"
#endif
fclose(file);
return 0;
}
+
+/**
+ * Link status handler.
+ *
+ * @param priv
+ * Pointer to private structure.
+ * @param dev
+ * Pointer to the rte_eth_dev structure.
+ *
+ * @return
+ * Nonzero if the callback process can be called immediately.
+ */
+static int
+priv_dev_link_status_handler(struct priv *priv, struct rte_eth_dev *dev)
+{
+ struct ibv_async_event event;
+ int port_change = 0;
+ int ret = 0;
+
+ /* Read all message and acknowledge them. */
+ for (;;) {
+ if (ibv_get_async_event(priv->ctx, &event))
+ break;
+
+ if (event.event_type == IBV_EVENT_PORT_ACTIVE ||
+ event.event_type == IBV_EVENT_PORT_ERR)
+ port_change = 1;
+ else
+ DEBUG("event type %d on port %d not handled",
+ event.event_type, event.element.port_num);
+ ibv_ack_async_event(&event);
+ }
+
+ if (port_change ^ priv->pending_alarm) {
+ struct rte_eth_link *link = &dev->data->dev_link;
+
+ priv->pending_alarm = 0;
+ mlx5_link_update_unlocked(dev, 0);
+ if (((link->link_speed == 0) && link->link_status) ||
+ ((link->link_speed != 0) && !link->link_status)) {
+ /* Inconsistent status, check again later. */
+ priv->pending_alarm = 1;
+ rte_eal_alarm_set(MLX5_ALARM_TIMEOUT_US,
+ mlx5_dev_link_status_handler,
+ dev);
+ } else
+ ret = 1;
+ }
+ return ret;
+}
+
+/**
+ * Handle delayed link status event.
+ *
+ * @param arg
+ * Registered argument.
+ */
+void
+mlx5_dev_link_status_handler(void *arg)
+{
+ struct rte_eth_dev *dev = arg;
+ struct priv *priv = dev->data->dev_private;
+ int ret;
+
+ priv_lock(priv);
+ assert(priv->pending_alarm == 1);
+ ret = priv_dev_link_status_handler(priv, dev);
+ priv_unlock(priv);
+ if (ret)
+ _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC);
+}
+
+/**
+ * Handle interrupts from the NIC.
+ *
+ * @param[in] intr_handle
+ * Interrupt handler.
+ * @param cb_arg
+ * Callback argument.
+ */
+void
+mlx5_dev_interrupt_handler(struct rte_intr_handle *intr_handle, void *cb_arg)
+{
+ struct rte_eth_dev *dev = cb_arg;
+ struct priv *priv = dev->data->dev_private;
+ int ret;
+
+ (void)intr_handle;
+ priv_lock(priv);
+ ret = priv_dev_link_status_handler(priv, dev);
+ priv_unlock(priv);
+ if (ret)
+ _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC);
+}
+
+/**
+ * Uninstall interrupt handler.
+ *
+ * @param priv
+ * Pointer to private structure.
+ * @param dev
+ * Pointer to the rte_eth_dev structure.
+ */
+void
+priv_dev_interrupt_handler_uninstall(struct priv *priv, struct rte_eth_dev *dev)
+{
+ if (!dev->data->dev_conf.intr_conf.lsc)
+ return;
+ rte_intr_callback_unregister(&priv->intr_handle,
+ mlx5_dev_interrupt_handler,
+ dev);
+ if (priv->pending_alarm)
+ rte_eal_alarm_cancel(mlx5_dev_link_status_handler, dev);
+ priv->pending_alarm = 0;
+ priv->intr_handle.fd = 0;
+ priv->intr_handle.type = 0;
+}
+
+/**
+ * Install interrupt handler.
+ *
+ * @param priv
+ * Pointer to private structure.
+ * @param dev
+ * Pointer to the rte_eth_dev structure.
+ */
+void
+priv_dev_interrupt_handler_install(struct priv *priv, struct rte_eth_dev *dev)
+{
+ int rc, flags;
+
+ if (!dev->data->dev_conf.intr_conf.lsc)
+ return;
+ assert(priv->ctx->async_fd > 0);
+ flags = fcntl(priv->ctx->async_fd, F_GETFL);
+ rc = fcntl(priv->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
+ if (rc < 0) {
+ INFO("failed to change file descriptor async event queue");
+ dev->data->dev_conf.intr_conf.lsc = 0;
+ } else {
+ priv->intr_handle.fd = priv->ctx->async_fd;
+ priv->intr_handle.type = RTE_INTR_HANDLE_EXT;
+ rte_intr_callback_register(&priv->intr_handle,
+ mlx5_dev_interrupt_handler,
+ dev);
+ }
+}
git.droids-corp.org / dpdk.git / commitdiff