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i40e: use priv flags to control flow director

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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>
This commit is contained in:
Jesse Brandeburg 2015-09-03 17:18:49 -04:00 committed by Jeff Kirsher
parent d4b2f9fe60
commit ef17178cf5
2 changed files with 15 additions and 0 deletions
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1
drivers/net/ethernet/intel/i40e/i40e.h
View File

@ -102,6 +102,7 @@
/* Ethtool Private Flags */
#define I40E_PRIV_FLAGS_NPAR_FLAG BIT(0)
#define I40E_PRIV_FLAGS_LINKPOLL_FLAG BIT(1)
#define I40E_PRIV_FLAGS_FD_ATR BIT(2)
#define I40E_NVM_VERSION_LO_SHIFT 0
#define I40E_NVM_VERSION_LO_MASK (0xff << I40E_NVM_VERSION_LO_SHIFT)

14
drivers/net/ethernet/intel/i40e/i40e_ethtool.c
View File

@ -231,6 +231,7 @@ static const char i40e_gstrings_test[][ETH_GSTRING_LEN] = {
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 @@ static u32 i40e_get_priv_flags(struct net_device *dev)
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 @@ static int i40e_set_priv_flags(struct net_device *dev, u32 flags)
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;
}