Defined in 2 files as a enumerator:

• include/uapi/linux/tcp.h, line 167 (as a enumerator)
• tools/include/uapi/linux/tcp.h, line 154 (as a enumerator)

Referenced in 3 files:

• net/ipv4/tcp.c
  • line 2689
  • line 4014
  • line 4663
• net/ipv4/tcp_output.c, line 2997
• tools/testing/selftests/net/tcp_ao/lib/repair.c
  • line 95
  • line 179
  • line 217