lkml.org 
[lkml]   [2018]   [Mar]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH net-next 7/9] net: hns3: fix for coalesce configuration lost during reset
Date
From: Yunsheng Lin <linyunsheng@huawei.com>

Coalesce configuration will be set to default value by
hns3_nic_init_vector_data during reset, which causes the
coalesce configuration loss problem.

This patch fixes it by setting the default value in
hns3_nic_alloc_vector_data, which will not be called in the
reset process.

Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
---
drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 156 +++++++++++++++++-------
1 file changed, 114 insertions(+), 42 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index bbaa21f..07dbebb 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -211,19 +211,25 @@ static void hns3_vector_gl_rl_init(struct hns3_enet_tqp_vector *tqp_vector,
tqp_vector->tx_group.int_gl = HNS3_INT_GL_50K;
tqp_vector->rx_group.int_gl = HNS3_INT_GL_50K;

- hns3_set_vector_coalesce_tx_gl(tqp_vector,
- tqp_vector->tx_group.int_gl);
- hns3_set_vector_coalesce_rx_gl(tqp_vector,
- tqp_vector->rx_group.int_gl);
-
/* Default: disable RL */
h->kinfo.int_rl_setting = 0;
- hns3_set_vector_coalesce_rl(tqp_vector, h->kinfo.int_rl_setting);

tqp_vector->rx_group.flow_level = HNS3_FLOW_LOW;
tqp_vector->tx_group.flow_level = HNS3_FLOW_LOW;
}

+static void hns3_vector_gl_rl_init_hw(struct hns3_enet_tqp_vector *tqp_vector,
+ struct hns3_nic_priv *priv)
+{
+ struct hnae3_handle *h = priv->ae_handle;
+
+ hns3_set_vector_coalesce_tx_gl(tqp_vector,
+ tqp_vector->tx_group.int_gl);
+ hns3_set_vector_coalesce_rx_gl(tqp_vector,
+ tqp_vector->rx_group.int_gl);
+ hns3_set_vector_coalesce_rl(tqp_vector, h->kinfo.int_rl_setting);
+}
+
static int hns3_nic_set_real_num_queue(struct net_device *netdev)
{
struct hnae3_handle *h = hns3_get_handle(netdev);
@@ -2625,32 +2631,18 @@ static int hns3_nic_init_vector_data(struct hns3_nic_priv *priv)
struct hnae3_ring_chain_node vector_ring_chain;
struct hnae3_handle *h = priv->ae_handle;
struct hns3_enet_tqp_vector *tqp_vector;
- struct hnae3_vector_info *vector;
- struct pci_dev *pdev = h->pdev;
- u16 tqp_num = h->kinfo.num_tqps;
- u16 vector_num;
int ret = 0;
u16 i;

- /* RSS size, cpu online and vector_num should be the same */
- /* Should consider 2p/4p later */
- vector_num = min_t(u16, num_online_cpus(), tqp_num);
- vector = devm_kcalloc(&pdev->dev, vector_num, sizeof(*vector),
- GFP_KERNEL);
- if (!vector)
- return -ENOMEM;
-
- vector_num = h->ae_algo->ops->get_vector(h, vector_num, vector);
-
- priv->vector_num = vector_num;
- priv->tqp_vector = (struct hns3_enet_tqp_vector *)
- devm_kcalloc(&pdev->dev, vector_num, sizeof(*priv->tqp_vector),
- GFP_KERNEL);
- if (!priv->tqp_vector)
- return -ENOMEM;
+ for (i = 0; i < priv->vector_num; i++) {
+ tqp_vector = &priv->tqp_vector[i];
+ hns3_vector_gl_rl_init_hw(tqp_vector, priv);
+ tqp_vector->num_tqps = 0;
+ }

- for (i = 0; i < tqp_num; i++) {
- u16 vector_i = i % vector_num;
+ for (i = 0; i < h->kinfo.num_tqps; i++) {
+ u16 vector_i = i % priv->vector_num;
+ u16 tqp_num = h->kinfo.num_tqps;

tqp_vector = &priv->tqp_vector[vector_i];

@@ -2660,52 +2652,94 @@ static int hns3_nic_init_vector_data(struct hns3_nic_priv *priv)
hns3_add_ring_to_group(&tqp_vector->rx_group,
priv->ring_data[i + tqp_num].ring);

- tqp_vector->idx = vector_i;
- tqp_vector->mask_addr = vector[vector_i].io_addr;
- tqp_vector->vector_irq = vector[vector_i].vector;
- tqp_vector->num_tqps++;
-
priv->ring_data[i].ring->tqp_vector = tqp_vector;
priv->ring_data[i + tqp_num].ring->tqp_vector = tqp_vector;
+ tqp_vector->num_tqps++;
}

- for (i = 0; i < vector_num; i++) {
+ for (i = 0; i < priv->vector_num; i++) {
tqp_vector = &priv->tqp_vector[i];

tqp_vector->rx_group.total_bytes = 0;
tqp_vector->rx_group.total_packets = 0;
tqp_vector->tx_group.total_bytes = 0;
tqp_vector->tx_group.total_packets = 0;
- hns3_vector_gl_rl_init(tqp_vector, priv);
tqp_vector->handle = h;

ret = hns3_get_vector_ring_chain(tqp_vector,
&vector_ring_chain);
if (ret)
- goto out;
+ return ret;

ret = h->ae_algo->ops->map_ring_to_vector(h,
tqp_vector->vector_irq, &vector_ring_chain);
- if (ret)
- goto out;

hns3_free_vector_ring_chain(tqp_vector, &vector_ring_chain);

+ if (ret)
+ return ret;
+
netif_napi_add(priv->netdev, &tqp_vector->napi,
hns3_nic_common_poll, NAPI_POLL_WEIGHT);
}

+ return 0;
+}
+
+static int hns3_nic_alloc_vector_data(struct hns3_nic_priv *priv)
+{
+ struct hnae3_handle *h = priv->ae_handle;
+ struct hns3_enet_tqp_vector *tqp_vector;
+ struct hnae3_vector_info *vector;
+ struct pci_dev *pdev = h->pdev;
+ u16 tqp_num = h->kinfo.num_tqps;
+ u16 vector_num;
+ int ret = 0;
+ u16 i;
+
+ /* RSS size, cpu online and vector_num should be the same */
+ /* Should consider 2p/4p later */
+ vector_num = min_t(u16, num_online_cpus(), tqp_num);
+ vector = devm_kcalloc(&pdev->dev, vector_num, sizeof(*vector),
+ GFP_KERNEL);
+ if (!vector)
+ return -ENOMEM;
+
+ vector_num = h->ae_algo->ops->get_vector(h, vector_num, vector);
+
+ priv->vector_num = vector_num;
+ priv->tqp_vector = (struct hns3_enet_tqp_vector *)
+ devm_kcalloc(&pdev->dev, vector_num, sizeof(*priv->tqp_vector),
+ GFP_KERNEL);
+ if (!priv->tqp_vector) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ for (i = 0; i < priv->vector_num; i++) {
+ tqp_vector = &priv->tqp_vector[i];
+ tqp_vector->idx = i;
+ tqp_vector->mask_addr = vector[i].io_addr;
+ tqp_vector->vector_irq = vector[i].vector;
+ hns3_vector_gl_rl_init(tqp_vector, priv);
+ }
+
out:
devm_kfree(&pdev->dev, vector);
return ret;
}

+static void hns3_clear_ring_group(struct hns3_enet_ring_group *group)
+{
+ group->ring = NULL;
+ group->count = 0;
+}
+
static int hns3_nic_uninit_vector_data(struct hns3_nic_priv *priv)
{
struct hnae3_ring_chain_node vector_ring_chain;
struct hnae3_handle *h = priv->ae_handle;
struct hns3_enet_tqp_vector *tqp_vector;
- struct pci_dev *pdev = h->pdev;
int i, ret;

for (i = 0; i < priv->vector_num; i++) {
@@ -2736,12 +2770,30 @@ static int hns3_nic_uninit_vector_data(struct hns3_nic_priv *priv)
}

priv->ring_data[i].ring->irq_init_flag = HNS3_VECTOR_NOT_INITED;
-
+ hns3_clear_ring_group(&tqp_vector->rx_group);
+ hns3_clear_ring_group(&tqp_vector->tx_group);
netif_napi_del(&priv->tqp_vector[i].napi);
}

- devm_kfree(&pdev->dev, priv->tqp_vector);
+ return 0;
+}
+
+static int hns3_nic_dealloc_vector_data(struct hns3_nic_priv *priv)
+{
+ struct hnae3_handle *h = priv->ae_handle;
+ struct pci_dev *pdev = h->pdev;
+ int i, ret;
+
+ for (i = 0; i < priv->vector_num; i++) {
+ struct hns3_enet_tqp_vector *tqp_vector;
+
+ tqp_vector = &priv->tqp_vector[i];
+ ret = h->ae_algo->ops->put_vector(h, tqp_vector->vector_irq);
+ if (ret)
+ return ret;
+ }

+ devm_kfree(&pdev->dev, priv->tqp_vector);
return 0;
}

@@ -3057,6 +3109,12 @@ static int hns3_client_init(struct hnae3_handle *handle)
goto out_get_ring_cfg;
}

+ ret = hns3_nic_alloc_vector_data(priv);
+ if (ret) {
+ ret = -ENOMEM;
+ goto out_alloc_vector_data;
+ }
+
ret = hns3_nic_init_vector_data(priv);
if (ret) {
ret = -ENOMEM;
@@ -3085,8 +3143,10 @@ static int hns3_client_init(struct hnae3_handle *handle)
out_reg_netdev_fail:
out_init_ring_data:
(void)hns3_nic_uninit_vector_data(priv);
- priv->ring_data = NULL;
out_init_vector_data:
+ hns3_nic_dealloc_vector_data(priv);
+out_alloc_vector_data:
+ priv->ring_data = NULL;
out_get_ring_cfg:
priv->ae_handle = NULL;
free_netdev(netdev);
@@ -3106,6 +3166,10 @@ static void hns3_client_uninit(struct hnae3_handle *handle, bool reset)
if (ret)
netdev_err(netdev, "uninit vector error\n");

+ 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");
@@ -3363,6 +3427,10 @@ static int hns3_modify_tqp_num(struct net_device *netdev, u16 new_tqp_num)
if (ret)
return ret;

+ ret = hns3_nic_alloc_vector_data(priv);
+ if (ret)
+ goto err_alloc_vector;
+
ret = hns3_nic_init_vector_data(priv);
if (ret)
goto err_uninit_vector;
@@ -3377,6 +3445,8 @@ static int hns3_modify_tqp_num(struct net_device *netdev, u16 new_tqp_num)
hns3_put_ring_config(priv);
err_uninit_vector:
hns3_nic_uninit_vector_data(priv);
+err_alloc_vector:
+ hns3_nic_dealloc_vector_data(priv);
return ret;
}

@@ -3424,6 +3494,8 @@ int hns3_set_channels(struct net_device *netdev,
goto open_netdev;
}

+ hns3_nic_dealloc_vector_data(priv);
+
hns3_uninit_all_ring(priv);
hns3_put_ring_config(priv);

--
2.9.3
\
 
 \ /
  Last update: 2018-03-09 03:06    [W:0.062 / U:11.500 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site