Defined in 3 files as a macro:

• include/uapi/linux/tcp.h, line 123 (as a macro)
• tools/include/uapi/linux/tcp.h, line 120 (as a macro)
• tools/testing/selftests/bpf/prog_tests/migrate_reuseport.c, line 39 (as a macro)

Referenced in 4 files:

• net/ipv4/tcp.c
  • line 4108
  • line 4679
• net/mptcp/sockopt.c
  • line 577
  • line 849
  • line 1423
• net/smc/af_smc.c, line 3127
• tools/testing/selftests/bpf/prog_tests/migrate_reuseport.c
  • line 38
  • line 305