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| author | Jian Shen <shenjian15@huawei.com> | 2018-12-20 06:52:01 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-02-12 21:47:14 +0300 |
| commit | d5e2df9ff5079b52d22a98bb74b95bb0df602b65 (patch) | |
| tree | e249fb47e55b4e736946a4086b240d6660b19731 | |
| parent | 86760e0dfe367d4a64852dc9c7c34ce87df97b96 (diff) | |
| download | linux-d5e2df9ff5079b52d22a98bb74b95bb0df602b65.tar.xz | |
net: hns3: add max vector number check for pf
[ Upstream commit 75edb610860fda65ceedb017fc69afabd2806b8b ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c index d5f15d8d18a9..0ccfa6a84535 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c @@ -2691,6 +2691,8 @@ static int hns3_nic_init_vector_data(struct hns3_nic_priv *priv) 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; @@ -2703,6 +2705,8 @@ 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) |