VLAN and multicast hardware filters are limited and can get
exhausted in adapters with many PCI functions. If setting
a VLAN or multicast filter fails due to lack of sufficient
hardware resources, these packets get dropped. Fix this by
switching to VLAN or multicast promiscous mode so that these
packets are not dropped.
Signed-off-by: Padmanabh Ratnakar <padmanabh.ratnakar@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
if (adapter->promiscuous)
return 0;
if (adapter->promiscuous)
return 0;
- if (adapter->vlans_added <= adapter->max_vlans) {
- /* Construct VLAN Table to give to HW */
- for (i = 0; i < VLAN_N_VID; i++) {
- if (adapter->vlan_tag[i]) {
- vtag[ntags] = cpu_to_le16(i);
- ntags++;
- }
- }
- status = be_cmd_vlan_config(adapter, adapter->if_handle,
- vtag, ntags, 1, 0);
- } else {
- status = be_cmd_vlan_config(adapter, adapter->if_handle,
- NULL, 0, 1, 1);
+ if (adapter->vlans_added > adapter->max_vlans)
+ goto set_vlan_promisc;
+
+ /* Construct VLAN Table to give to HW */
+ for (i = 0; i < VLAN_N_VID; i++)
+ if (adapter->vlan_tag[i])
+ vtag[ntags++] = cpu_to_le16(i);
+
+ status = be_cmd_vlan_config(adapter, adapter->if_handle,
+ vtag, ntags, 1, 0);
+
+ /* Set to VLAN promisc mode as setting VLAN filter failed */
+ if (status) {
+ dev_info(&adapter->pdev->dev, "Exhausted VLAN HW filters.\n");
+ dev_info(&adapter->pdev->dev, "Disabling HW VLAN filtering.\n");
+ goto set_vlan_promisc;
+
+set_vlan_promisc:
+ status = be_cmd_vlan_config(adapter, adapter->if_handle,
+ NULL, 0, 1, 1);
+ return status;
}
static int be_vlan_add_vid(struct net_device *netdev, u16 vid)
}
static int be_vlan_add_vid(struct net_device *netdev, u16 vid)
static void be_set_rx_mode(struct net_device *netdev)
{
struct be_adapter *adapter = netdev_priv(netdev);
static void be_set_rx_mode(struct net_device *netdev)
{
struct be_adapter *adapter = netdev_priv(netdev);
if (netdev->flags & IFF_PROMISC) {
be_cmd_rx_filter(adapter, IFF_PROMISC, ON);
if (netdev->flags & IFF_PROMISC) {
be_cmd_rx_filter(adapter, IFF_PROMISC, ON);
- be_cmd_rx_filter(adapter, IFF_MULTICAST, ON);
+ status = be_cmd_rx_filter(adapter, IFF_MULTICAST, ON);
+
+ /* Set to MCAST promisc mode if setting MULTICAST address fails */
+ if (status) {
+ dev_info(&adapter->pdev->dev, "Exhausted multicast HW filters.\n");
+ dev_info(&adapter->pdev->dev, "Disabling HW multicast filtering.\n");
+ be_cmd_rx_filter(adapter, IFF_ALLMULTI, ON);
+ }