Re: [dpdk-dev] [PATCH v4 1/5] net/e1000: release port upon close

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

On 09/19, Di ChenxuX wrote:
>Set RTE_ETH_DEV_CLOSE_REMOVE upon probe so all the private resources
> for the port can be freed by rte_eth_dev_close().
>
>Signed-off-by: Di ChenxuX <chenxux.di@intel.com>
>---
> doc/guides/rel_notes/release_19_11.rst |   5 +
> drivers/net/e1000/igb_ethdev.c         | 144 ++++++++++++-------------

As I commented before, you also need to do the migration for the em_ethdev.c.

> 2 files changed, 77 insertions(+), 72 deletions(-)
>
>diff --git a/doc/guides/rel_notes/release_19_11.rst b/doc/guides/rel_notes/release_19_11.rst
>index 27cfbd9e3..334756906 100644
>--- a/doc/guides/rel_notes/release_19_11.rst
>+++ b/doc/guides/rel_notes/release_19_11.rst
>@@ -56,6 +56,11 @@ New Features
>      Also, make sure to start the actual text at the margin.
>      =========================================================
> 
>+* **Updated the Intel drivers.**
>+
>+  * Added support for the ``RTE_ETH_DEV_CLOSE_REMOVE`` flag for
>+    e1000, fm10k, i40e, ice, ixgbe.
>+

I think it makes more scene to separate release notes in respective patches,
as this patch just update e1000 pmd.

> 
> Removed Items
> -------------
>diff --git a/drivers/net/e1000/igb_ethdev.c b/drivers/net/e1000/igb_ethdev.c
>index fec2b4289..c610042c3 100644
>--- a/drivers/net/e1000/igb_ethdev.c
>+++ b/drivers/net/e1000/igb_ethdev.c
>@@ -843,6 +843,11 @@ eth_igb_dev_init(struct rte_eth_dev *eth_dev)
> 	rte_ether_addr_copy((struct rte_ether_addr *)hw->mac.addr,
> 			&eth_dev->data->mac_addrs[0]);
> 

[snip]

> static int
>@@ -1579,14 +1532,13 @@ static void
> eth_igb_close(struct rte_eth_dev *dev)
> {
> 	struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
>-	struct e1000_adapter *adapter =
>-		E1000_DEV_PRIVATE(dev->data->dev_private);
> 	struct rte_eth_link link;
> 	struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
> 	struct rte_intr_handle *intr_handle = &pci_dev->intr_handle;
>+	struct e1000_filter_info *filter_info =
>+		E1000_DEV_PRIVATE_TO_FILTER_INFO(dev->data->dev_private);
> 
> 	eth_igb_stop(dev);
>-	adapter->stopped = 1;
> 
> 	e1000_phy_hw_reset(hw);
> 	igb_release_manageability(hw);
>@@ -1610,6 +1562,40 @@ eth_igb_close(struct rte_eth_dev *dev)
> 
> 	memset(&link, 0, sizeof(link));
> 	rte_eth_linkstatus_set(dev, &link);
>+
>+	dev->dev_ops = NULL;
>+	dev->rx_pkt_burst = NULL;
>+	dev->tx_pkt_burst = NULL;
>+
>+	/* Reset any pending lock */
>+	igb_reset_swfw_lock(hw);
>+
>+	/* uninitialize PF if max_vfs not zero */
>+	igb_pf_host_uninit(dev);
>+
>+	rte_intr_callback_unregister(intr_handle,
>+				     eth_igb_interrupt_handler, dev);

why rte_intr_disable(intr_handle) is missing here?

>+
>+	/* clear the SYN filter info */
>+	filter_info->syn_info = 0;
>+
>+	/* clear the ethertype filters info */
>+	filter_info->ethertype_mask = 0;
>+	memset(filter_info->ethertype_filters, 0,
>+		E1000_MAX_ETQF_FILTERS * sizeof(struct igb_ethertype_filter));
>+
>+	/* clear the rss filter info */
>+	memset(&filter_info->rss_info, 0,
>+		sizeof(struct igb_rte_flow_rss_conf));
>+
>+	/* remove all ntuple filters of the device */
>+	igb_ntuple_filter_uninit(dev);
>+
>+	/* remove all flex filters of the device */
>+	igb_flex_filter_uninit(dev);
>+
>+	/* clear all the filters list */
>+	igb_filterlist_flush(dev);
> }
> 
> /*
>@@ -3331,6 +3317,11 @@ igbvf_dev_stop(struct rte_eth_dev *dev)
> {
> 	struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
> 	struct rte_intr_handle *intr_handle = &pci_dev->intr_handle;
>+	struct e1000_adapter *adapter =
>+		E1000_DEV_PRIVATE(dev->data->dev_private);
>+
>+	if (adapter->stopped)
>+		return;
> 
> 	PMD_INIT_FUNC_TRACE();
> 
>@@ -3353,22 +3344,23 @@ igbvf_dev_stop(struct rte_eth_dev *dev)
> 		rte_free(intr_handle->intr_vec);
> 		intr_handle->intr_vec = NULL;
> 	}
>+
>+	adapter->stopped = true;
> }
> 
> static void
> igbvf_dev_close(struct rte_eth_dev *dev)
> {
> 	struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
>-	struct e1000_adapter *adapter =
>-		E1000_DEV_PRIVATE(dev->data->dev_private);
> 	struct rte_ether_addr addr;
>+	struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
> 
> 	PMD_INIT_FUNC_TRACE();
> 
> 	e1000_reset_hw(hw);
> 
> 	igbvf_dev_stop(dev);
>-	adapter->stopped = 1;
>+
> 	igb_dev_free_queues(dev);
> 
> 	/**
>@@ -3379,6 +3371,14 @@ igbvf_dev_close(struct rte_eth_dev *dev)
> 
> 	memset(&addr, 0, sizeof(addr));
> 	igbvf_default_mac_addr_set(dev, &addr);
>+
>+	dev->dev_ops = NULL;
>+	dev->rx_pkt_burst = NULL;
>+	dev->tx_pkt_burst = NULL;
>+
>+	rte_intr_callback_unregister(&pci_dev->intr_handle,
>+				     eth_igbvf_interrupt_handler,
>+				     (void *)dev);

Ditto.

Thanks,
Xiaolong

> }
> 
> static void
>-- 
>2.17.1
>