提交 80598e62 编写于 作者: L Lihong Yang 提交者: David S. Miller

i40e: Check and set the PF driver state first in i40e_ndo_set_vf_mac

The PF driver state flag __I40E_VIRTCHNL_OP_PENDING needs to be
checked and set at the beginning of i40e_ndo_set_vf_mac. Otherwise,
if there are error conditions before it, the flag will be cleared
unexpectedly by this function to cause potential race conditions.
Hence move the check to the top of this function.
Signed-off-by: NLihong Yang <lihong.yang@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 745b32c1
无相关合并请求
......@@ -3943,6 +3943,11 @@ int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
int bkt;
u8 i;
if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
return -EAGAIN;
}
/* validate the request */
ret = i40e_validate_vf(pf, vf_id);
if (ret)
......@@ -3967,11 +3972,6 @@ int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
goto error_param;
}
if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
return -EAGAIN;
}
if (is_multicast_ether_addr(mac)) {
dev_err(&pf->pdev->dev,
"Invalid Ethernet address %pM for VF %d\n", mac, vf_id);
......
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