From: Mitch Williams <mitch.a.williams@intel.com>
To: netdev@vger.kernel.org
Subject: [PATCH 2/2] HW VLAN filtering control
Date: Fri, 27 Jul 2007 13:55:29 -0700 [thread overview]
Message-ID: <1185569729.28574.13.camel@strongmad> (raw)
Add support to e1000 for enabling/disabling hardware VLAN filtering
at runtime.
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
diff -urpN -X dontdiff
linux-2.6.22.1-clean/drivers/net/e1000/e1000_main.c
linux-2.6.22.1/drivers/net/e1000/e1000_main.c
--- linux-2.6.22.1-clean/drivers/net/e1000/e1000_main.c 2007-07-10
11:56:30.000000000 -0700
+++ linux-2.6.22.1/drivers/net/e1000/e1000_main.c 2007-07-27
13:16:52.000000000 -0700
@@ -197,6 +197,9 @@ static void e1000_vlan_rx_register(struc
static void e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t
vid);
static void e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t
vid);
static void e1000_restore_vlan(struct e1000_adapter *adapter);
+#ifdef HAVE_VLAN_FLAGS
+static int e1000_vlan_set_flag(struct net_device *netdev, unsigned int
flag, int value);
+#endif
static int e1000_suspend(struct pci_dev *pdev, pm_message_t state);
#ifdef CONFIG_PM
@@ -938,6 +941,10 @@ e1000_probe(struct pci_dev *pdev,
netdev->vlan_rx_register = e1000_vlan_rx_register;
netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid;
netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid;
+#ifdef HAVE_VLAN_FLAGS
+ netdev->vlan_set_flag = e1000_vlan_set_flag;
+#endif
+
#ifdef CONFIG_NET_POLL_CONTROLLER
netdev->poll_controller = e1000_netpoll;
#endif
@@ -4973,7 +4980,42 @@ e1000_vlan_rx_register(struct net_device
e1000_irq_enable(adapter);
}
+#ifdef HAVE_VLAN_FLAGS
+static int
+e1000_vlan_set_flag(struct net_device *netdev, unsigned int flag, int
value)
+{
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+ uint32_t rctl;
+ /* The only flag we currently care about is bit 1,
+ which controls HW filtering. */
+ e1000_irq_disable(adapter);
+ if (adapter->hw.mac_type == e1000_ich8lan)
+ return -EPERM;
+
+ if (flag == VLAN_FLAG_DISABLE_FILTER) {
+ if (value) {
+ /* disable VLAN filtering */
+ rctl = E1000_READ_REG(&adapter->hw, RCTL);
+ rctl &= ~E1000_RCTL_VFE;
+ E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
+ netdev->features &= ~NETIF_F_HW_VLAN_FILTER;
+ } else {
+ /* enable VLAN receive filtering */
+ rctl = E1000_READ_REG(&adapter->hw, RCTL);
+ rctl |= E1000_RCTL_VFE;
+ rctl &= ~E1000_RCTL_CFIEN;
+ E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
+ netdev->features |= NETIF_F_HW_VLAN_FILTER;
+ e1000_restore_vlan(adapter);
+ e1000_update_mng_vlan(adapter);
+ }
+ }
+
+ e1000_irq_enable(adapter);
+ return 0;
+}
+#endif
static void
e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid)
{
reply other threads:[~2007-07-27 20:55 UTC|newest]
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