igb: add support for spoofchk config

Add support for spoofchk configuration per VF via iproute2 tool.

Signed-off-by: Lior Levy <lior.levy@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

2 files changed, 35 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/igb/igb.h b/drivers/net/ethernet/intel/igb/igb.h
index cef8ec114bd8..d47ac2ae1b41 100644
--- a/drivers/net/ethernet/intel/igb/igb.h
+++ b/drivers/net/ethernet/intel/igb/igb.h
@@ -103,6 +103,7 @@ struct vf_data_storage {
         u16 pf_vlan; /* When set, guest VLAN config not allowed. */
         u16 pf_qos;
         u16 tx_rate;
+        bool spoofchk_enabled;
 };
 
 #define IGB_VF_FLAG_CTS            0x00000001 /* VF is clear to send data */
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index c54ba4224ac6..666f87c4bfa3 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -169,6 +169,8 @@ static int igb_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac);
 static int igb_ndo_set_vf_vlan(struct net_device *netdev,
                                int vf, u16 vlan, u8 qos);
 static int igb_ndo_set_vf_bw(struct net_device *netdev, int vf, int tx_rate);
+static int igb_ndo_set_vf_spoofchk(struct net_device *netdev, int vf,
+                                   bool setting);
 static int igb_ndo_get_vf_config(struct net_device *netdev, int vf,
                                  struct ifla_vf_info *ivi);
 static void igb_check_vf_rate_limit(struct igb_adapter *);
@@ -1896,6 +1898,7 @@ static const struct net_device_ops igb_netdev_ops = {
         .ndo_set_vf_mac         = igb_ndo_set_vf_mac,
         .ndo_set_vf_vlan        = igb_ndo_set_vf_vlan,
         .ndo_set_vf_tx_rate     = igb_ndo_set_vf_bw,
+        .ndo_set_vf_spoofchk    = igb_ndo_set_vf_spoofchk,
         .ndo_get_vf_config      = igb_ndo_get_vf_config,
 #ifdef CONFIG_NET_POLL_CONTROLLER
         .ndo_poll_controller    = igb_netpoll,
@@ -5230,6 +5233,9 @@ static int igb_vf_configure(struct igb_adapter *adapter, int vf)
         eth_zero_addr(mac_addr);
         igb_set_vf_mac(adapter, vf, mac_addr);
 
+        /* By default spoof check is enabled for all VFs */
+        adapter->vf_data[vf].spoofchk_enabled = true;
+
         return 0;
 }
 
@@ -7592,6 +7598,33 @@ static int igb_ndo_set_vf_bw(struct net_device *netdev, int vf, int tx_rate)
         return 0;
 }
 
+static int igb_ndo_set_vf_spoofchk(struct net_device *netdev, int vf,
+                                   bool setting)
+{
+        struct igb_adapter *adapter = netdev_priv(netdev);
+        struct e1000_hw *hw = &adapter->hw;
+        u32 reg_val, reg_offset;
+
+        if (!adapter->vfs_allocated_count)
+                return -EOPNOTSUPP;
+
+        if (vf >= adapter->vfs_allocated_count)
+                return -EINVAL;
+
+        reg_offset = (hw->mac.type == e1000_82576) ? E1000_DTXSWC : E1000_TXSWC;
+        reg_val = rd32(reg_offset);
+        if (setting)
+                reg_val |= ((1 << vf) |
+                            (1 << (vf + E1000_DTXSWC_VLAN_SPOOF_SHIFT)));
+        else
+                reg_val &= ~((1 << vf) |
+                             (1 << (vf + E1000_DTXSWC_VLAN_SPOOF_SHIFT)));
+        wr32(reg_offset, reg_val);
+
+        adapter->vf_data[vf].spoofchk_enabled = setting;
+        return E1000_SUCCESS;
+}
+
 static int igb_ndo_get_vf_config(struct net_device *netdev,
                                  int vf, struct ifla_vf_info *ivi)
 {
@@ -7603,6 +7636,7 @@ static int igb_ndo_get_vf_config(struct net_device *netdev,
         ivi->tx_rate = adapter->vf_data[vf].tx_rate;
         ivi->vlan = adapter->vf_data[vf].pf_vlan;
         ivi->qos = adapter->vf_data[vf].pf_qos;
+        ivi->spoofchk = adapter->vf_data[vf].spoofchk_enabled;
         return 0;
 }