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Message-ID: <1541772476-41478-11-git-send-email-tanhuazhong@huawei.com>
Date: Fri, 9 Nov 2018 22:07:55 +0800
From: Huazhong Tan <tanhuazhong@...wei.com>
To: <davem@...emloft.net>
CC: <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<salil.mehta@...wei.com>, <yisen.zhuang@...wei.com>,
<linuxarm@...wei.com>
Subject: [Patch net-next 10/11] net: hns3: do VF's pci re-initialization while PF doing FLR
While doing PF FLR, VF's PCIe configuration space will be cleared, so
the pci and vector of VF should be re-initialized in the VF's reset
process while PF doing FLR.
Also, this patch fixes some memory not freed problem when pci
re-initialization is done during reset process.
Signed-off-by: Huazhong Tan <tanhuazhong@...wei.com>
---
drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 24 +++++++--
.../ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c | 57 ++++++++++++++++++++--
.../ethernet/hisilicon/hns3/hns3vf/hclgevf_main.h | 1 +
3 files changed, 74 insertions(+), 8 deletions(-)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index e527898..8d07ec6 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -3849,21 +3849,31 @@ static int hns3_reset_notify_init_enet(struct hnae3_handle *handle)
/* Carrier off reporting is important to ethtool even BEFORE open */
netif_carrier_off(netdev);
+ ret = hns3_nic_alloc_vector_data(priv);
+ if (ret)
+ return ret;
+
hns3_restore_coal(priv);
ret = hns3_nic_init_vector_data(priv);
if (ret)
- return ret;
+ goto err_dealloc_vector;
ret = hns3_init_all_ring(priv);
- if (ret) {
- hns3_nic_uninit_vector_data(priv);
- priv->ring_data = NULL;
- }
+ if (ret)
+ goto err_uninit_vector;
set_bit(HNS3_NIC_STATE_INITED, &priv->state);
return ret;
+
+err_uninit_vector:
+ hns3_nic_uninit_vector_data(priv);
+ priv->ring_data = NULL;
+err_dealloc_vector:
+ hns3_nic_dealloc_vector_data(priv);
+
+ return ret;
}
static int hns3_reset_notify_uninit_enet(struct hnae3_handle *handle)
@@ -3887,6 +3897,10 @@ static int hns3_reset_notify_uninit_enet(struct hnae3_handle *handle)
hns3_store_coal(priv);
+ ret = hns3_nic_dealloc_vector_data(priv);
+ if (ret)
+ netdev_err(netdev, "dealloc vector error\n");
+
ret = hns3_uninit_all_ring(priv);
if (ret)
netdev_err(netdev, "uninit ring error\n");
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
index 4dfac6c..8f1c681 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
@@ -1766,6 +1766,7 @@ static int hclgevf_init_msi(struct hclgevf_dev *hdev)
hdev->vector_irq = devm_kcalloc(&pdev->dev, hdev->num_msi,
sizeof(int), GFP_KERNEL);
if (!hdev->vector_irq) {
+ devm_kfree(&pdev->dev, hdev->vector_status);
pci_free_irq_vectors(pdev);
return -ENOMEM;
}
@@ -1777,6 +1778,8 @@ static void hclgevf_uninit_msi(struct hclgevf_dev *hdev)
{
struct pci_dev *pdev = hdev->pdev;
+ devm_kfree(&pdev->dev, hdev->vector_status);
+ devm_kfree(&pdev->dev, hdev->vector_irq);
pci_free_irq_vectors(pdev);
}
@@ -2001,11 +2004,52 @@ static int hclgevf_query_vf_resource(struct hclgevf_dev *hdev)
return 0;
}
+static int hclgevf_pci_reset(struct hclgevf_dev *hdev)
+{
+ struct pci_dev *pdev = hdev->pdev;
+ int ret = 0;
+
+ if (hdev->reset_type == HNAE3_VF_FULL_RESET &&
+ test_bit(HCLGEVF_STATE_IRQ_INITED, &hdev->state)) {
+ hclgevf_misc_irq_uninit(hdev);
+ hclgevf_uninit_msi(hdev);
+ clear_bit(HCLGEVF_STATE_IRQ_INITED, &hdev->state);
+ }
+
+ if (!test_bit(HCLGEVF_STATE_IRQ_INITED, &hdev->state)) {
+ pci_set_master(pdev);
+ ret = hclgevf_init_msi(hdev);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "failed(%d) to init MSI/MSI-X\n", ret);
+ return ret;
+ }
+
+ ret = hclgevf_misc_irq_init(hdev);
+ if (ret) {
+ hclgevf_uninit_msi(hdev);
+ dev_err(&pdev->dev, "failed(%d) to init Misc IRQ(vector0)\n",
+ ret);
+ return ret;
+ }
+
+ set_bit(HCLGEVF_STATE_IRQ_INITED, &hdev->state);
+ }
+
+ return ret;
+}
+
static int hclgevf_reset_hdev(struct hclgevf_dev *hdev)
{
struct pci_dev *pdev = hdev->pdev;
int ret;
+ ret = hclgevf_pci_reset(hdev);
+ if (ret) {
+ dev_err(&pdev->dev, "pci reset failed %d\n", ret);
+ return ret;
+ }
+
ret = hclgevf_cmd_init(hdev);
if (ret) {
dev_err(&pdev->dev, "cmd failed %d\n", ret);
@@ -2076,6 +2120,8 @@ static int hclgevf_init_hdev(struct hclgevf_dev *hdev)
goto err_misc_irq_init;
}
+ set_bit(HCLGEVF_STATE_IRQ_INITED, &hdev->state);
+
ret = hclgevf_configure(hdev);
if (ret) {
dev_err(&pdev->dev, "failed(%d) to fetch configuration\n", ret);
@@ -2123,16 +2169,21 @@ static int hclgevf_init_hdev(struct hclgevf_dev *hdev)
hclgevf_cmd_uninit(hdev);
err_cmd_queue_init:
hclgevf_pci_uninit(hdev);
+ clear_bit(HCLGEVF_STATE_IRQ_INITED, &hdev->state);
return ret;
}
static void hclgevf_uninit_hdev(struct hclgevf_dev *hdev)
{
hclgevf_state_uninit(hdev);
- hclgevf_misc_irq_uninit(hdev);
+
+ if (test_bit(HCLGEVF_STATE_IRQ_INITED, &hdev->state)) {
+ hclgevf_misc_irq_uninit(hdev);
+ hclgevf_uninit_msi(hdev);
+ hclgevf_pci_uninit(hdev);
+ }
+
hclgevf_cmd_uninit(hdev);
- hclgevf_uninit_msi(hdev);
- hclgevf_pci_uninit(hdev);
}
static int hclgevf_init_ae_dev(struct hnae3_ae_dev *ae_dev)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.h b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.h
index ffe3d49..028c52e 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.h
@@ -73,6 +73,7 @@ enum hclgevf_states {
/* device states */
HCLGEVF_STATE_DOWN,
HCLGEVF_STATE_DISABLED,
+ HCLGEVF_STATE_IRQ_INITED,
/* task states */
HCLGEVF_STATE_SERVICE_SCHED,
HCLGEVF_STATE_RST_SERVICE_SCHED,
--
2.7.4
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