[dpdk-stable] [PATCH] net/iavf: enable port reset

[dapengx.yu@intel.com]

From: YU DAPENG <dapengx.yu@intel.com>

This patch is intended to add iavf_dev_reset ops, enable iavf to
support "port reset". And also make iavf_dev_close be called to
clean port resources.

Signed-off-by: YU DAPENG <dapengx.yu@intel.com>
---
 drivers/net/iavf/iavf_ethdev.c | 21 ++++++++++++++++++---
 1 file changed, 18 insertions(+), 3 deletions(-)

diff --git a/drivers/net/iavf/iavf_ethdev.c b/drivers/net/iavf/iavf_ethdev.c
index 3291d18a2d..042dd93641 100644
--- a/drivers/net/iavf/iavf_ethdev.c
+++ b/drivers/net/iavf/iavf_ethdev.c
@@ -37,6 +37,7 @@ static int iavf_dev_configure(struct rte_eth_dev *dev);
 static int iavf_dev_start(struct rte_eth_dev *dev);
 static void iavf_dev_stop(struct rte_eth_dev *dev);
 static void iavf_dev_close(struct rte_eth_dev *dev);
+static int iavf_dev_reset(struct rte_eth_dev *dev);
 static int iavf_dev_info_get(struct rte_eth_dev *dev,
 			     struct rte_eth_dev_info *dev_info);
 static const uint32_t *iavf_dev_supported_ptypes_get(struct rte_eth_dev *dev);
@@ -99,6 +100,7 @@ static const struct eth_dev_ops iavf_eth_dev_ops = {
 	.dev_start                  = iavf_dev_start,
 	.dev_stop                   = iavf_dev_stop,
 	.dev_close                  = iavf_dev_close,
+	.dev_reset                  = iavf_dev_reset,
 	.dev_infos_get              = iavf_dev_info_get,
 	.dev_supported_ptypes_get   = iavf_dev_supported_ptypes_get,
 	.link_update                = iavf_dev_link_update,
@@ -1438,7 +1440,6 @@ static int
 iavf_dev_uninit(struct rte_eth_dev *dev)
 {
 	struct iavf_info *vf = IAVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
-	struct iavf_hw *hw = IAVF_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 
 	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 		return -EPERM;
@@ -1446,8 +1447,7 @@ iavf_dev_uninit(struct rte_eth_dev *dev)
 	dev->dev_ops = NULL;
 	dev->rx_pkt_burst = NULL;
 	dev->tx_pkt_burst = NULL;
-	if (hw->adapter_stopped == 0)
-		iavf_dev_close(dev);
+	iavf_dev_close(dev);
 
 	rte_free(vf->vf_res);
 	vf->vsi_res = NULL;
@@ -1470,6 +1470,21 @@ iavf_dev_uninit(struct rte_eth_dev *dev)
 	return 0;
 }
 
+/*
+ * Reset VF device only to re-initialize resources in PMD layer
+ */
+static int
+iavf_dev_reset(struct rte_eth_dev *dev)
+{
+	int ret;
+
+	ret = iavf_dev_uninit(dev);
+	if (ret)
+		return ret;
+
+	return iavf_dev_init(dev);
+}
+
 static int eth_iavf_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
 			     struct rte_pci_device *pci_dev)
 {
-- 
2.25.1