i40e: Fix a bug in ethtool for FD drop packet filter action

A drop action comes down as a ring_cookie value, so allow it as
a special value that can be used to configure destination control.

Also fix the output to filter read command accordingly.

Change-ID: I9956723cee42f3194885403317dd21ed4a151144
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 7 insertions, 2 deletions

diff --git a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
index e33016620e28..4a488ffcd6b0 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
@@ -1259,7 +1259,11 @@ static int i40e_get_ethtool_fdir_entry(struct i40e_pf *pf,
         fsp->h_u.tcp_ip4_spec.pdst = rule->src_port;
         fsp->h_u.tcp_ip4_spec.ip4src = rule->dst_ip[0];
         fsp->h_u.tcp_ip4_spec.ip4dst = rule->src_ip[0];
-        fsp->ring_cookie = rule->q_index;
+
+        if (rule->dest_ctl == I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET)
+                fsp->ring_cookie = RX_CLS_FLOW_DISC;
+        else
+                fsp->ring_cookie = rule->q_index;
 
         return 0;
 }
@@ -1563,7 +1567,8 @@ static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi,
                 return -EINVAL;
         }
 
-        if (fsp->ring_cookie >= vsi->num_queue_pairs)
+        if ((fsp->ring_cookie != RX_CLS_FLOW_DISC) &&
+            (fsp->ring_cookie >= vsi->num_queue_pairs))
                 return -EINVAL;
 
         input = kzalloc(sizeof(*input), GFP_KERNEL);