Defined in 3 files as a macro:

• include/uapi/linux/tcp.h, line 111 (as a macro)
• tools/include/uapi/linux/tcp.h, line 108 (as a macro)
• tools/testing/selftests/bpf/progs/bpf_tracing_net.h, line 55 (as a macro)

Referenced in 5 files:

• net/core/filter.c, line 5584
• net/ipv4/tcp.c
  • line 3919
  • line 4671
• net/mptcp/sockopt.c, line 571
• tools/testing/selftests/bpf/progs/connect4_prog.c, line 122
• tools/testing/selftests/bpf/progs/setget_sockopt.c, line 60