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iavf: Fix change VF's mac address

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Previously changing mac address gives false negative because
ip link set <interface> address <MAC> return with
RTNLINK: Permission denied.
In iavf_set_mac was check if PF handled our mac set request,
even before filter was added to list.
Because this check returns always true and it never waits for
PF's response.

Move iavf_is_mac_handled to wait_event_interruptible_timeout
instead of false. Now it will wait for PF's response and then
check if address was added or rejected.

Fixes: 35a2443d09 ("iavf: Add waiting for response from PF in set mac")
Signed-off-by: Sylwester Dziedziuch <sylwesterx.dziedziuch@intel.com>
Co-developed-by: Norbert Zulinski <norbertx.zulinski@intel.com>
Signed-off-by: Norbert Zulinski <norbertx.zulinski@intel.com>
Signed-off-by: Mateusz Palczewski <mateusz.palczewski@intel.com>
Tested-by: Konrad Jankowski <konrad0.jankowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
This commit is contained in:
Sylwester Dziedziuch
2022-09-01 16:32:06 +02:00
committed by Tony Nguyen
parent a509702cac
commit f66b98c868
1 changed files with 3 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/net/ethernet/intel/iavf/iavf_main.c
View File

@@ -1077,7 +1077,6 @@ static int iavf_set_mac(struct net_device *netdev, void *p)
{
struct iavf_adapter *adapter = netdev_priv(netdev);
struct sockaddr *addr = p;
bool handle_mac = iavf_is_mac_set_handled(netdev, addr->sa_data);
int ret;
if (!is_valid_ether_addr(addr->sa_data))
@@ -1094,10 +1093,9 @@ static int iavf_set_mac(struct net_device *netdev, void *p)
return 0;
}
if (handle_mac)
goto done;
ret = wait_event_interruptible_timeout(adapter->vc_waitqueue, false, msecs_to_jiffies(2500));
ret = wait_event_interruptible_timeout(adapter->vc_waitqueue,
iavf_is_mac_set_handled(netdev, addr->sa_data),
msecs_to_jiffies(2500));
/* If ret < 0 then it means wait was interrupted.
* If ret == 0 then it means we got a timeout.
@@ -1111,7 +1109,6 @@ static int iavf_set_mac(struct net_device *netdev, void *p)
if (!ret)
return -EAGAIN;
done:
if (!ether_addr_equal(netdev->dev_addr, addr->sa_data))
return -EACCES;