Defined in 1 files as a macro:

• include/uapi/linux/if_tunnel.h, line 33 (as a macro)

Referenced in 7 files:

• include/net/gre.h
  • line 81
  • line 104
• net/ipv4/gre_demux.c, line 71
• net/netfilter/nf_conntrack_proto_gre.c, line 175
• net/netfilter/nf_nat_proto.c, line 289
• samples/bpf/sockex2_kern.c, line 138
• samples/bpf/sockex3_kern.c, line 156
• tools/testing/selftests/bpf/progs/bpf_flow.c, line 184