Re: [dpdk-dev] [PATCH] net/nfb: remove resources when dev is closed

[Ye Xiaolong <xiaolong.ye@intel.com>]

On 08/09, Rastislav Cernay wrote:
>From: Rastislav Cernay <cernay@netcope.com>
>
>The rte_eth_dev_close() function now handles freeing resources for
>devices (e.g., mac_addrs).  To conform with the new close() behaviour we
>are asserting the RTE_ETH_DEV_CLOSE_REMOVE flag so that
>rte_eth_dev_close() releases all device level dynamic memory.
>
>Signed-off-by: Rastislav Cernay <cernay@netcope.com>
>---
> drivers/net/nfb/nfb_ethdev.c | 18 ++++++++++++------
> 1 file changed, 12 insertions(+), 6 deletions(-)
>
>diff --git a/drivers/net/nfb/nfb_ethdev.c b/drivers/net/nfb/nfb_ethdev.c
>index c3119a0..4a19979 100644
>--- a/drivers/net/nfb/nfb_ethdev.c
>+++ b/drivers/net/nfb/nfb_ethdev.c
>@@ -210,12 +210,17 @@
> static void
> nfb_eth_dev_close(struct rte_eth_dev *dev)
> {
>+	struct pmd_internals *internals = (struct pmd_internals *)
>+		dev->data->dev_private;

The device private pointer (dev_private) is of type void *, therefore this
cast is unnecessary.

> 	uint16_t i;
> 	uint16_t nb_rx = dev->data->nb_rx_queues;
> 	uint16_t nb_tx = dev->data->nb_tx_queues;
> 
> 	nfb_eth_dev_stop(dev);
> 
>+	nfb_nc_rxmac_deinit(internals->rxmac, internals->max_rxmac);
>+	nfb_nc_txmac_deinit(internals->txmac, internals->max_txmac);
>+
> 	for (i = 0; i < nb_rx; i++) {
> 		nfb_eth_rx_queue_release(dev->data->rx_queues[i]);
> 		dev->data->rx_queues[i] = NULL;
>@@ -226,6 +231,9 @@
> 		dev->data->tx_queues[i] = NULL;
> 	}
> 	dev->data->nb_tx_queues = 0;
>+
>+	rte_free(dev->data->mac_addrs);
>+	dev->data->mac_addrs = NULL;
> }
> 
> /**
>@@ -446,6 +454,9 @@
> 		rte_kvargs_free(kvlist);
> 	}
> 
>+	/* Let rte_eth_dev_close() release the port resources */
>+	dev->data->dev_flags |= RTE_ETH_DEV_CLOSE_REMOVE;
>+
> 	/*
> 	 * Get number of available DMA RX and TX queues, which is maximum
> 	 * number of queues that can be created and store it in private device
>@@ -520,15 +531,10 @@
> static int
> nfb_eth_dev_uninit(struct rte_eth_dev *dev)
> {
>-	struct rte_eth_dev_data *data = dev->data;
>-	struct pmd_internals *internals = (struct pmd_internals *)
>-		data->dev_private;
>-
> 	struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
> 	struct rte_pci_addr *pci_addr = &pci_dev->addr;
> 
>-	nfb_nc_rxmac_deinit(internals->rxmac, internals->max_rxmac);
>-	nfb_nc_txmac_deinit(internals->txmac, internals->max_txmac);
>+	nfb_eth_dev_close(dev);
> 
> 	RTE_LOG(INFO, PMD, "NFB device ("
> 		PCI_PRI_FMT ") successfully uninitialized\n",
>-- 
>1.8.3.1
>

For the rest,

Reviewed-by: Xiaolong Ye <xiaolong.ye@intel.com>