i40e: use priv flags to control flow director
Some customers wish to be able to control our hardware specific
feature called flow director, at runtime. This patch enables
ethtool priv flags to control this driver/hardware specific feature.
ethtool --set-priv-flags ethX flow-director-atr off
NOTE: the ethtool ntuple interface controls the flow-director
sideband rules.
Change-ID: Iba156350b07fa2ce66f53ded51739f9a3781fe0e
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
index 831f971..185ac91 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
@@ -231,6 +231,7 @@
static const char i40e_priv_flags_strings[][ETH_GSTRING_LEN] = {
"NPAR",
"LinkPolling",
+ "flow-director-atr",
};
#define I40E_PRIV_FLAGS_STR_LEN ARRAY_SIZE(i40e_priv_flags_strings)
@@ -2666,6 +2667,8 @@
I40E_PRIV_FLAGS_NPAR_FLAG : 0;
ret_flags |= pf->flags & I40E_FLAG_LINK_POLLING_ENABLED ?
I40E_PRIV_FLAGS_LINKPOLL_FLAG : 0;
+ ret_flags |= pf->flags & I40E_FLAG_FD_ATR_ENABLED ?
+ I40E_PRIV_FLAGS_FD_ATR : 0;
return ret_flags;
}
@@ -2686,6 +2689,17 @@
else
pf->flags &= ~I40E_FLAG_LINK_POLLING_ENABLED;
+ /* allow the user to control the state of the Flow
+ * Director ATR (Application Targeted Routing) feature
+ * of the driver
+ */
+ if (flags & I40E_PRIV_FLAGS_FD_ATR) {
+ pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
+ } else {
+ pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
+ pf->auto_disable_flags |= I40E_FLAG_FD_ATR_ENABLED;
+ }
+
return 0;
}