text: // SPDX-License-Identifier: GPL-2.0
  #include <linux/bpf.h>
  #include <bpf/bpf_helpers.h>
  
  struct {
  	__uint(type, BPF_MAP_TYPE_DEVMAP);
  	__uint(key_size, sizeof(__u32));
  	__uint(value_size, sizeof(struct bpf_devmap_val));
  	__uint(max_entries, 4);
  } dm_ports SEC(".maps");
  
  /* valid program on DEVMAP entry via SEC name;
   * has access to egress and ingress ifindex
   */
  SEC("xdp/devmap")
  int xdp_dummy_dm(struct xdp_md *ctx)
  {
  	return XDP_PASS;
  }
  
  SEC("xdp.frags/devmap")
  int xdp_dummy_dm_frags(struct xdp_md *ctx)
  {
  	return XDP_PASS;
  }
  
  char _license[] SEC("license") = "GPL";
  