iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

net: hns3: add max vector number check for pf

Browse Source 
Each pf supports max 64 vectors and 128 tqps. For 2p/4p core scenario,
there may be more than 64 cpus online. So the result of min_t(u16,
num_Online_cpus(), tqp_num) may be more than 64. This patch adds check
for the vector number.

Fixes: dd38c72604dc ("net: hns3: fix for coalesce configuration lost during reset")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jian Shen 2018-12-20 11:52:01 +08:00 committed by David S. Miller
parent 1b7d7b0581
commit 75edb61086
1 changed files with 4 additions and 0 deletions

4
drivers/net/ethernet/hisilicon/hns3/hns3_enet.c

@ -3118,6 +3118,8 @@ map_ring_fail:
static int hns3_nic_alloc_vector_data(struct hns3_nic_priv *priv)
{
#define HNS3_VECTOR_PF_MAX_NUM 64
struct hnae3_handle *h = priv->ae_handle;
struct hns3_enet_tqp_vector *tqp_vector;
struct hnae3_vector_info *vector;
@ -3130,6 +3132,8 @@ static int hns3_nic_alloc_vector_data(struct hns3_nic_priv *priv)
/* 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_num = min_t(u16, vector_num, HNS3_VECTOR_PF_MAX_NUM);
vector = devm_kcalloc(&pdev->dev, vector_num, sizeof(*vector),
GFP_KERNEL);
if (!vector)