net: hns3: add some error checking in hclge_tm module
authorYunsheng Lin <linyunsheng@huawei.com>
Fri, 28 Jun 2019 11:50:10 +0000 (19:50 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 26 Jul 2019 07:12:46 +0000 (09:12 +0200)
commit56591adf10e9c2d121541b7ebc0452462896c812
tree6d3a0bbe2f8071edfc8ca6a979a1b3b4e3fc818c
parenta83680691e3e7c97d11cdfe342b20e227276c4ce
net: hns3: add some error checking in hclge_tm module

[ Upstream commit 04f25edb48c441fc278ecc154c270f16966cbb90 ]

When hdev->tx_sch_mode is HCLGE_FLAG_VNET_BASE_SCH_MODE, the
hclge_tm_schd_mode_vnet_base_cfg calls hclge_tm_pri_schd_mode_cfg
with vport->vport_id as pri_id, which is used as index for
hdev->tm_info.tc_info, it will cause out of bound access issue
if vport_id is equal to or larger than HNAE3_MAX_TC.

Also hardware only support maximum speed of HCLGE_ETHER_MAX_RATE.

So this patch adds two checks for above cases.

Fixes: 848440544b41 ("net: hns3: Add support of TX Scheduler & Shaper to HNS3 driver")
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c