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igb: Fix removal of unicast MAC filters of VFs

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[ Upstream commit 584af82154f56e6b2740160fcc84a2966d969e15 ]

Move checking condition of VF MAC filter before clearing
or adding MAC filter to VF to prevent potential blackout caused
by removal of necessary and working VF's MAC filter.

Fixes: 1b8b062a99 ("igb: add VF trust infrastructure")
Signed-off-by: Karen Sornek <karen.sornek@intel.com>
Tested-by: Konrad Jankowski <konrad0.jankowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Karen Sornek
2021-08-31 13:16:35 +02:00
committed by Greg Kroah-Hartman
parent 12c1938870
commit ddac50d04f
1 changed files with 14 additions and 14 deletions
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26
drivers/net/ethernet/intel/igb/igb_main.c
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@@ -7654,19 +7654,6 @@ static int igb_set_vf_mac_filter(struct igb_adapter *adapter, const int vf,
struct vf_mac_filter *entry = NULL;
int ret = 0;
switch (info) {
case E1000_VF_MAC_FILTER_CLR:
/* remove all unicast MAC filters related to the current VF */
list_for_each(pos, &adapter->vf_macs.l) {
entry = list_entry(pos, struct vf_mac_filter, l);
if (entry->vf == vf) {
entry->vf = -1;
entry->free = true;
igb_del_mac_filter(adapter, entry->vf_mac, vf);
}
}
break;
case E1000_VF_MAC_FILTER_ADD:
if ((vf_data->flags & IGB_VF_FLAG_PF_SET_MAC) &&
!vf_data->trusted) {
dev_warn(&pdev->dev,
@@ -7681,6 +7668,19 @@ static int igb_set_vf_mac_filter(struct igb_adapter *adapter, const int vf,
return -EINVAL;
}
switch (info) {
case E1000_VF_MAC_FILTER_CLR:
/* remove all unicast MAC filters related to the current VF */
list_for_each(pos, &adapter->vf_macs.l) {
entry = list_entry(pos, struct vf_mac_filter, l);
if (entry->vf == vf) {
entry->vf = -1;
entry->free = true;
igb_del_mac_filter(adapter, entry->vf_mac, vf);
}
}
break;
case E1000_VF_MAC_FILTER_ADD:
/* try to find empty slot in the list */
list_for_each(pos, &adapter->vf_macs.l) {
entry = list_entry(pos, struct vf_mac_filter, l);