net/mlx5: update GENEVE TLV option matching

The GENEVE TLV option matching is done using a flex parser.

Recent update in firmware, requires that in order to match on the
GENEVE TLV option the "geneve_tlv_option_0_exist" bit should be set.

Add the new "geneve_tlv_option_0_exist" setting when translating the
GENEVE TLV option item.

Signed-off-by: Shiri Kuzin <shirik@nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>

drivers/common/mlx5/mlx5_prm.h

@@ -853,7 +853,8 @@ struct mlx5_ifc_fte_match_set_misc_bits {
 	u8 vxlan_vni[0x18];
 	u8 reserved_at_b8[0x8];
 	u8 geneve_vni[0x18];
-	u8 reserved_at_e4[0x7];
+	u8 reserved_at_e4[0x6];
+	u8 geneve_tlv_option_0_exist[0x1];
 	u8 geneve_oam[0x1];
 	u8 reserved_at_e0[0xc];
 	u8 outer_ipv6_flow_label[0x14];

drivers/net/mlx5/mlx5_flow_dv.c

@@ -9267,6 +9267,8 @@ flow_dv_translate_item_geneve_opt(struct rte_eth_dev *dev, void *matcher,
 		MLX5_SET(fte_match_set_misc, misc_v, geneve_opt_len,
 			 geneve_opt_v->option_len + 1);
 	}
+	MLX5_SET(fte_match_set_misc, misc_m, geneve_tlv_option_0_exist, 1);
+	MLX5_SET(fte_match_set_misc, misc_v, geneve_tlv_option_0_exist, 1);
 	/* Set the data. */
 	if (geneve_opt_v->data) {
 		memcpy(&opt_data_key, geneve_opt_v->data,