Defined in 2 files as a macro:

• include/uapi/linux/tcp.h, line 123 (as a macro)
• tools/testing/selftests/net/tcp_fastopen_backup_key.c, line 30 (as a macro)

Referenced in 3 files:

• net/ipv4/tcp.c
  • line 2836
  • line 3513
• net/smc/af_smc.c, line 1732
• tools/testing/selftests/net/tcp_fastopen_backup_key.c
  • line 29
  • line 57
  • line 74