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

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Message-Id: <20170621011802.81768-10-jeffrey.t.kirsher@intel.com>
Date:   Tue, 20 Jun 2017 18:17:56 -0700
From:   Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:     davem@...emloft.net
Cc:     Carolyn Wyborny <carolyn.wyborny@...el.com>,
        netdev@...r.kernel.org, nhorman@...hat.com, sassmann@...hat.com,
        jogreene@...hat.com, Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next 09/15] i40e: Add message for unsupported MFP mode

From: Carolyn Wyborny <carolyn.wyborny@...el.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.wyborny@...el.com>
Tested-by: Andrew Bowers <andrewx.bowers@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.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