net/mlx5: support device removal event

Extend the LSC event handling to support the device removal as well.

The mlx5 event handling has been made capable of receiving and
signaling several event types at once.

This support includes next:
1. Removal event detection according to the user configuration.
2. Calling to all registered mlx5 removal callbacks.
3. Capabilities extension to include removal interrupt handling.

Signed-off-by: Matan Azrad <matan@mellanox.com>
Acked-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>

diff --git a/doc/guides/nics/features/mlx5.ini b/doc/guides/nics/features/mlx5.ini
index 99a8d93..d506249 100644 (file)
--- a/doc/guides/nics/features/mlx5.ini
+++ b/doc/guides/nics/features/mlx5.ini
@@ -7,6 +7,7 @@
 Speed capabilities   = Y
 Link status          = Y
 Link status event    = Y
+Removal event        = Y
 Rx interrupt         = Y
 Queue start/stop     = Y
 MTU update           = Y

diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c
index 084df88..32e22df 100644 (file)
--- a/drivers/net/mlx5/mlx5.c
+++ b/drivers/net/mlx5/mlx5.c
@@ -871,7 +871,7 @@ static struct rte_pci_driver mlx5_driver = {
        },
        .id_table = mlx5_pci_id_map,
        .probe = mlx5_pci_probe,
-       .drv_flags = RTE_PCI_DRV_INTR_LSC,
+       .drv_flags = RTE_PCI_DRV_INTR_LSC | RTE_PCI_DRV_INTR_RMV,
 };
 
 /**

diff --git a/drivers/net/mlx5/mlx5_ethdev.c b/drivers/net/mlx5/mlx5_ethdev.c
index eef403f..a47fd2e 100644 (file)
--- a/drivers/net/mlx5/mlx5_ethdev.c
+++ b/drivers/net/mlx5/mlx5_ethdev.c
@@ -1173,6 +1173,9 @@ priv_dev_status_handler(struct priv *priv)
                        event.event_type == IBV_EVENT_PORT_ERR) &&
                        (priv->dev->data->dev_conf.intr_conf.lsc == 1))
                        ret |= (1 << RTE_ETH_EVENT_INTR_LSC);
+               else if (event.event_type == IBV_EVENT_DEVICE_FATAL &&
+                       priv->dev->data->dev_conf.intr_conf.rmv == 1)
+                       ret |= (1 << RTE_ETH_EVENT_INTR_RMV);
                else
                        DEBUG("event type %d on port %d not handled",
                              event.event_type, event.element.port_num);
@@ -1228,6 +1231,9 @@ mlx5_dev_interrupt_handler(void *cb_arg)
        if (events & (1 << RTE_ETH_EVENT_INTR_LSC))
                _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL,
                                              NULL);
+       if (events & (1 << RTE_ETH_EVENT_INTR_RMV))
+               _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RMV, NULL,
+                                             NULL);
 }
 
 /**
@@ -1241,7 +1247,8 @@ mlx5_dev_interrupt_handler(void *cb_arg)
 void
 priv_dev_interrupt_handler_uninstall(struct priv *priv, struct rte_eth_dev *dev)
 {
-       if (!dev->data->dev_conf.intr_conf.lsc)
+       if (!dev->data->dev_conf.intr_conf.lsc &&
+               !dev->data->dev_conf.intr_conf.rmv)
                return;
        rte_intr_callback_unregister(&priv->intr_handle,
                                     mlx5_dev_interrupt_handler,
@@ -1266,7 +1273,8 @@ priv_dev_interrupt_handler_install(struct priv *priv, struct rte_eth_dev *dev)
 {
        int rc, flags;
 
-       if (!dev->data->dev_conf.intr_conf.lsc)
+       if (!dev->data->dev_conf.intr_conf.lsc &&
+               !dev->data->dev_conf.intr_conf.rmv)
                return;
        assert(priv->ctx->async_fd > 0);
        flags = fcntl(priv->ctx->async_fd, F_GETFL);
@@ -1274,6 +1282,7 @@ priv_dev_interrupt_handler_install(struct priv *priv, struct rte_eth_dev *dev)
        if (rc < 0) {
                INFO("failed to change file descriptor async event queue");
                dev->data->dev_conf.intr_conf.lsc = 0;
+               dev->data->dev_conf.intr_conf.rmv = 0;
        } else {
                priv->intr_handle.fd = priv->ctx->async_fd;
                priv->intr_handle.type = RTE_INTR_HANDLE_EXT;