net/mlx5e: Offload TC matching on packets being IP fragments

Enable offloading of matching on packets being fragments.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reviewed-by: Paul Blakey <paulb@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
index f07ef8c..f8829b5 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
@@ -31,6 +31,7 @@
  */
 
 #include <net/flow_dissector.h>
+#include <net/sch_generic.h>
 #include <net/pkt_cls.h>
 #include <net/tc_act/tc_gact.h>
 #include <net/tc_act/tc_skbedit.h>
@@ -363,7 +364,18 @@ static int __parse_cls_flower(struct mlx5e_priv *priv,
                        skb_flow_dissector_target(f->dissector,
                                                  FLOW_DISSECTOR_KEY_CONTROL,
                                                  f->key);
+
+               struct flow_dissector_key_control *mask =
+                       skb_flow_dissector_target(f->dissector,
+                                                 FLOW_DISSECTOR_KEY_CONTROL,
+                                                 f->mask);
                addr_type = key->addr_type;
+
+               if (mask->flags & FLOW_DIS_IS_FRAGMENT) {
+                       MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
+                       MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag,
+                                key->flags & FLOW_DIS_IS_FRAGMENT);
+               }
        }
 
        if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_BASIC)) {