[PATCH 3/3] ixgbe: ping to reset on changing trust status

[Hiroshi Shimamoto]

From: Hiroshi Shimamoto <h-shimam...@ct.jp.nec.com>

Send a ping to reset VF on changing the status of trusting.
VF driver will reconfigure its features on reset.

Signed-off-by: Hiroshi Shimamoto <h-shimam...@ct.jp.nec.com>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c | 25 +++++++++++++++++--------
 1 file changed, 17 insertions(+), 8 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c 
b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
index 5eb3108..7bb9926 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
@@ -1212,18 +1212,23 @@ void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter)
        IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0);
 }
 
-void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter)
+static void ixgbe_ping_vf(struct ixgbe_adapter *adapter, int vf)
 {
        struct ixgbe_hw *hw = &adapter->hw;
        u32 ping;
+
+       ping = IXGBE_PF_CONTROL_MSG;
+       if (adapter->vfinfo[vf].clear_to_send)
+               ping |= IXGBE_VT_MSGTYPE_CTS;
+       ixgbe_write_mbx(hw, &ping, 1, vf);
+}
+
+void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter)
+{
        int i;
 
-       for (i = 0 ; i < adapter->num_vfs; i++) {
-               ping = IXGBE_PF_CONTROL_MSG;
-               if (adapter->vfinfo[i].clear_to_send)
-                       ping |= IXGBE_VT_MSGTYPE_CTS;
-               ixgbe_write_mbx(hw, &ping, 1, i);
-       }
+       for (i = 0 ; i < adapter->num_vfs; i++)
+               ixgbe_ping_vf(adapter, i);
 }
 
 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
@@ -1517,7 +1522,11 @@ int ixgbe_ndo_set_vf_trust(struct net_device *netdev, 
int vf, bool setting)
 
        adapter->vfinfo[vf].trusted = setting;
 
-       /* TODO: reset to reconfigure features */
+       /* reset VF to reconfigure features */
+       adapter->vfinfo[vf].clear_to_send = false;
+       ixgbe_ping_vf(adapter, vf);
+
+       e_info(drv, "VF %u is %strusted\n", vf, setting ? "" : "not ");
 
        return 0;
 }
-- 
1.8.3.1

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