[dpdk-dev] [PATCH v3 1/1] vmxnet3: add PCI Port Hotplug support

Bernard Iremonger bernard.iremonger at intel.com
Tue Oct 27 18:12:26 CET 2015


Signed-off-by: Bernard Iremonger <bernard.iremonger at intel.com>
---
 doc/guides/rel_notes/release_2_2.rst |  2 ++
 drivers/net/vmxnet3/vmxnet3_ethdev.c | 33 +++++++++++++++++++++++++++++----
 2 files changed, 31 insertions(+), 4 deletions(-)

diff --git a/doc/guides/rel_notes/release_2_2.rst b/doc/guides/rel_notes/release_2_2.rst
index 455b5a2..a26c5b8 100644
--- a/doc/guides/rel_notes/release_2_2.rst
+++ b/doc/guides/rel_notes/release_2_2.rst
@@ -13,6 +13,8 @@ New Features
 
   * This change required modifications to librte_ether and all vdev and pdev PMD's.
 
+* **Added port hotplug support to the vmxnet3 PMD.**
+
 Resolved Issues
 ---------------
 
diff --git a/drivers/net/vmxnet3/vmxnet3_ethdev.c b/drivers/net/vmxnet3/vmxnet3_ethdev.c
index 2beee3e..5cd708e 100644
--- a/drivers/net/vmxnet3/vmxnet3_ethdev.c
+++ b/drivers/net/vmxnet3/vmxnet3_ethdev.c
@@ -70,6 +70,7 @@
 #define PROCESS_SYS_EVENTS 0
 
 static int eth_vmxnet3_dev_init(struct rte_eth_dev *eth_dev);
+static int eth_vmxnet3_dev_uninit(struct rte_eth_dev *eth_dev);
 static int vmxnet3_dev_configure(struct rte_eth_dev *dev);
 static int vmxnet3_dev_start(struct rte_eth_dev *dev);
 static void vmxnet3_dev_stop(struct rte_eth_dev *dev);
@@ -296,13 +297,37 @@ eth_vmxnet3_dev_init(struct rte_eth_dev *eth_dev)
 	return 0;
 }
 
+static int
+eth_vmxnet3_dev_uninit(struct rte_eth_dev *eth_dev)
+{
+	struct vmxnet3_hw *hw = eth_dev->data->dev_private;
+
+	PMD_INIT_FUNC_TRACE();
+
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+		return 0;
+
+	if (hw->adapter_stopped == 0)
+		vmxnet3_dev_close(eth_dev);
+
+	eth_dev->dev_ops = NULL;
+	eth_dev->rx_pkt_burst = NULL;
+	eth_dev->tx_pkt_burst = NULL;
+
+	rte_free(eth_dev->data->mac_addrs);
+	eth_dev->data->mac_addrs = NULL;
+
+	return 0;
+}
+
 static struct eth_driver rte_vmxnet3_pmd = {
 	.pci_drv = {
 		.name = "rte_vmxnet3_pmd",
 		.id_table = pci_id_vmxnet3_map,
-		.drv_flags = RTE_PCI_DRV_NEED_MAPPING,
+		.drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_DETACHABLE,
 	},
 	.eth_dev_init = eth_vmxnet3_dev_init,
+	.eth_dev_uninit = eth_vmxnet3_dev_uninit,
 	.dev_private_size = sizeof(struct vmxnet3_hw),
 };
 
@@ -581,7 +606,7 @@ vmxnet3_dev_stop(struct rte_eth_dev *dev)
 
 	PMD_INIT_FUNC_TRACE();
 
-	if (hw->adapter_stopped == TRUE) {
+	if (hw->adapter_stopped == 1) {
 		PMD_INIT_LOG(DEBUG, "Device already closed.");
 		return;
 	}
@@ -597,7 +622,7 @@ vmxnet3_dev_stop(struct rte_eth_dev *dev)
 	/* reset the device */
 	VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_RESET_DEV);
 	PMD_INIT_LOG(DEBUG, "Device reset.");
-	hw->adapter_stopped = FALSE;
+	hw->adapter_stopped = 0;
 
 	vmxnet3_dev_clear_queues(dev);
 
@@ -617,7 +642,7 @@ vmxnet3_dev_close(struct rte_eth_dev *dev)
 	PMD_INIT_FUNC_TRACE();
 
 	vmxnet3_dev_stop(dev);
-	hw->adapter_stopped = TRUE;
+	hw->adapter_stopped = 1;
 }
 
 static void
-- 
1.9.1



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