[dpdk-dev] [PATCH v3 3/4] net/i40e: add support of reset

[Wei Dai <wei.dai@intel.com>]

Reset a NIC by calling dev_uninit() and then dev_init().
Go through the same way in NIC PCI remove without release
of ethdev resource and then NIC PCI probe function without
ethdev resource allocation.

Signed-off-by: Wei Dai <wei.dai@intel.com>
---
 drivers/net/i40e/i40e_ethdev.c    | 16 ++++++++++++++++
 drivers/net/i40e/i40e_ethdev_vf.c | 16 ++++++++++++++++
 2 files changed, 32 insertions(+)

diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index 4ee1113..7694957 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -250,6 +250,7 @@ static int i40e_dev_configure(struct rte_eth_dev *dev);
 static int i40e_dev_start(struct rte_eth_dev *dev);
 static void i40e_dev_stop(struct rte_eth_dev *dev);
 static void i40e_dev_close(struct rte_eth_dev *dev);
+static int  i40e_dev_reset(struct rte_eth_dev *dev);
 static void i40e_dev_promiscuous_enable(struct rte_eth_dev *dev);
 static void i40e_dev_promiscuous_disable(struct rte_eth_dev *dev);
 static void i40e_dev_allmulticast_enable(struct rte_eth_dev *dev);
@@ -449,6 +450,7 @@ static const struct eth_dev_ops i40e_eth_dev_ops = {
 	.dev_start                    = i40e_dev_start,
 	.dev_stop                     = i40e_dev_stop,
 	.dev_close                    = i40e_dev_close,
+	.dev_reset                    = i40e_dev_reset,
 	.promiscuous_enable           = i40e_dev_promiscuous_enable,
 	.promiscuous_disable          = i40e_dev_promiscuous_disable,
 	.allmulticast_enable          = i40e_dev_allmulticast_enable,
@@ -2135,6 +2137,20 @@ i40e_dev_close(struct rte_eth_dev *dev)
 	I40E_WRITE_FLUSH(hw);
 }
 
+static int
+i40e_dev_reset(struct rte_eth_dev *dev)
+{
+	int ret;
+
+	ret = eth_i40e_dev_uninit(dev);
+	if (ret)
+		return ret;
+
+	ret = eth_i40e_dev_init(dev);
+
+	return ret;
+}
+
 static void
 i40e_dev_promiscuous_enable(struct rte_eth_dev *dev)
 {
diff --git a/drivers/net/i40e/i40e_ethdev_vf.c b/drivers/net/i40e/i40e_ethdev_vf.c
index 2d5a9b5..bf287a0 100644
--- a/drivers/net/i40e/i40e_ethdev_vf.c
+++ b/drivers/net/i40e/i40e_ethdev_vf.c
@@ -123,6 +123,7 @@ static void i40evf_vlan_offload_set(struct rte_eth_dev *dev, int mask);
 static int i40evf_vlan_pvid_set(struct rte_eth_dev *dev, uint16_t pvid,
 				int on);
 static void i40evf_dev_close(struct rte_eth_dev *dev);
+static int  i40evf_dev_reset(struct rte_eth_dev *dev);
 static void i40evf_dev_promiscuous_enable(struct rte_eth_dev *dev);
 static void i40evf_dev_promiscuous_disable(struct rte_eth_dev *dev);
 static void i40evf_dev_allmulticast_enable(struct rte_eth_dev *dev);
@@ -204,6 +205,7 @@ static const struct eth_dev_ops i40evf_eth_dev_ops = {
 	.xstats_get_names     = i40evf_dev_xstats_get_names,
 	.xstats_reset         = i40evf_dev_xstats_reset,
 	.dev_close            = i40evf_dev_close,
+	.dev_reset            = i40evf_dev_reset,
 	.dev_infos_get        = i40evf_dev_info_get,
 	.dev_supported_ptypes_get = i40e_dev_supported_ptypes_get,
 	.vlan_filter_set      = i40evf_vlan_filter_set,
@@ -2347,6 +2349,20 @@ i40evf_dev_close(struct rte_eth_dev *dev)
 }
 
 static int
+i40evf_dev_reset(struct rte_eth_dev *dev)
+{
+	int ret;
+
+	ret = i40evf_dev_uninit(dev);
+	if (ret)
+		return ret;
+
+	ret = i40evf_dev_init(dev);
+
+	return ret;
+}
+
+static int
 i40evf_get_rss_lut(struct i40e_vsi *vsi, uint8_t *lut, uint16_t lut_size)
 {
 	struct i40e_vf *vf = I40E_VSI_TO_VF(vsi);
-- 
2.9.3