[net-next 09/15] i40e: Add message for unsupported MFP mode

[Jeff Kirsher]

From: Carolyn Wyborny <carolyn.wybo...@intel.com>

This patch adds a check and message if the device is in
MFP mode as changing RSS input set is not supported in
MFP mode.

Signed-off-by: Carolyn Wyborny <carolyn.wybo...@intel.com>
Tested-by: Andrew Bowers <andrewx.bow...@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirs...@intel.com>
---
 drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c 
b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
index 9d3233c2c9cd..9692a5294fa3 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
@@ -2711,6 +2711,12 @@ static int i40e_set_rss_hash_opt(struct i40e_pf *pf, 
struct ethtool_rxnfc *nfc)
        u8 flow_pctype = 0;
        u64 i_set, i_setc;
 
+       if (pf->flags & I40E_FLAG_MFP_ENABLED) {
+               dev_err(&pf->pdev->dev,
+                       "Change of RSS hash input set is not supported when MFP 
mode is enabled\n");
+               return -EOPNOTSUPP;
+       }
+
        /* RSS does not support anything other than hashing
         * to queues on src and dst IPs and ports
         */
-- 
2.12.2