diff options
| author | Jian Shen <shenjian15@huawei.com> | 2018-03-10 11:29:32 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-03-11 22:53:32 -0400 |
| commit | d07b6bb4350040e10be8483640ae1b2bf37a3e5e (patch) | |
| tree | 3e76c94e0ea9a5b0bcf9eb2ccb9a471adad09a33 /drivers | |
| parent | eefd00a5d70378feae66c073105c548075609482 (diff) | |
net: hns3: add existence checking before adding unicast mac address
It's not allowed to add two same unicast mac address entries to the
mac_vlan table. When modify the uc mac address of a VF device to the
same value with the PF device's, the PF device will lose its entry of
the mac_vlan table.
Lookup the mac address in the mac_vlan table, and add it if the entry
is inexistent.
Fixes: 46a3df9f9718 ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support")
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c index 47dcc9856d4c..d70619b5ff15 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c @@ -4107,6 +4107,7 @@ int hclge_add_uc_addr_common(struct hclge_vport *vport, { struct hclge_dev *hdev = vport->back; struct hclge_mac_vlan_tbl_entry_cmd req; + struct hclge_desc desc; u16 egress_port = 0; int ret; @@ -4140,7 +4141,21 @@ int hclge_add_uc_addr_common(struct hclge_vport *vport, hclge_prepare_mac_addr(&req, addr); - ret = hclge_add_mac_vlan_tbl(vport, &req, NULL); + /* Lookup the mac address in the mac_vlan table, and add + * it if the entry is inexistent. Repeated unicast entry + * is not allowed in the mac vlan table. + */ + ret = hclge_lookup_mac_vlan_tbl(vport, &req, &desc, false); + if (ret == -ENOENT) + return hclge_add_mac_vlan_tbl(vport, &req, NULL); + + /* check if we just hit the duplicate */ + if (!ret) + ret = -EINVAL; + + dev_err(&hdev->pdev->dev, + "PF failed to add unicast entry(%pM) in the MAC table\n", + addr); return ret; } |