i40e: add support for SCTPv4 FDir filters

Enable FDir filters for SCTPv4 packets using the ethtool ntuple
interface to enable filters. The ethtool API does not allow masking on
the verification tag.

Change-Id: I093e88a8143994c7e6f4b7b17a0bd5cf861d18e4
Signed-off-by: Jacob Keller <jacob.e.keller@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.h b/drivers/net/ethernet/intel/i40e/i40e.h
index 72c4a74..3133a1a 100644
--- a/drivers/net/ethernet/intel/i40e/i40e.h
+++ b/drivers/net/ethernet/intel/i40e/i40e.h
@@ -377,6 +377,7 @@ struct i40e_pf {
 	 */
 	u16 fd_tcp4_filter_cnt;
 	u16 fd_udp4_filter_cnt;
+	u16 fd_sctp4_filter_cnt;
 	u16 fd_ip4_filter_cnt;
 
 	/* Flexible filter table values that need to be programmed into