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i40e: Do not accept tagged packets by default

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Remove the filter created by the firmware with the default MAC address it
reads out of the NVM storage and a promiscuous VLAN tag and replace it
with a filter that will not accept tagged packets by default.  The system
must request a VLAN tag packet filter to get packets with that tag.

Change-ID: I119e6c3603a039bd68282ba31bf26f33a575490a
Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Greg Rose 2014-05-22 06:31:56 +00:00 committed by Jeff Kirsher
parent 4d9b604353
commit 8c27d42ec6
1 changed files with 32 additions and 0 deletions
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32
drivers/net/ethernet/intel/i40e/i40e_main.c
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@ -1153,6 +1153,30 @@ struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
struct i40e_mac_filter, list);
}
/**
* i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
* @vsi: the PF Main VSI - inappropriate for any other VSI
* @macaddr: the MAC address
**/
static void i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
{
struct i40e_aqc_remove_macvlan_element_data element;
struct i40e_pf *pf = vsi->back;
i40e_status aq_ret;
/* Only appropriate for the PF main VSI */
if (vsi->type != I40E_VSI_MAIN)
return;
ether_addr_copy(element.mac_addr, macaddr);
element.vlan_tag = 0;
element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
if (aq_ret)
dev_err(&pf->pdev->dev, "Could not remove default MAC-VLAN\n");
}
/**
* i40e_add_filter - Add a mac/vlan filter to the VSI
* @vsi: the VSI to be searched
@ -6980,6 +7004,14 @@ static int i40e_config_netdev(struct i40e_vsi *vsi)
if (vsi->type == I40E_VSI_MAIN) {
SET_NETDEV_DEV(netdev, &pf->pdev->dev);
memcpy(mac_addr, hw->mac.perm_addr, ETH_ALEN);
/* The following two steps are necessary to prevent reception
* of tagged packets - by default the NVM loads a MAC-VLAN
* filter that will accept any tagged packet. This is to
* prevent that during normal operations until a specific
* VLAN tag filter has been set.
*/
i40e_rm_default_mac_filter(vsi, mac_addr);
i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, true);
} else {
/* relate the VSI_VMDQ name to the VSI_MAIN name */
snprintf(netdev->name, IFNAMSIZ, "%sv%%d",