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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: 1b8b062a99dc ("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 12dc89ccaf
commit 81ffe207ae
1 changed files with 14 additions and 14 deletions
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28
drivers/net/ethernet/intel/igb/igb_main.c
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@ -7641,6 +7641,20 @@ static int igb_set_vf_mac_filter(struct igb_adapter *adapter, const int vf,
struct vf_mac_filter *entry = NULL;
int ret = 0;
if ((vf_data->flags & IGB_VF_FLAG_PF_SET_MAC) &&
!vf_data->trusted) {
dev_warn(&pdev->dev,
"VF %d requested MAC filter but is administratively denied\n",
vf);
return -EINVAL;
}
if (!is_valid_ether_addr(addr)) {
dev_warn(&pdev->dev,
"VF %d attempted to set invalid MAC filter\n",
vf);
return -EINVAL;
}
switch (info) {
case E1000_VF_MAC_FILTER_CLR:
/* remove all unicast MAC filters related to the current VF */
@ -7654,20 +7668,6 @@ static int igb_set_vf_mac_filter(struct igb_adapter *adapter, const int 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,
"VF %d requested MAC filter but is administratively denied\n",
vf);
return -EINVAL;
}
if (!is_valid_ether_addr(addr)) {
dev_warn(&pdev->dev,
"VF %d attempted to set invalid MAC filter\n",
vf);
return -EINVAL;
}
/* 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);