Defined in 1 files as a macro:

• include/uapi/linux/in.h, line 145 (as a macro)

Referenced in 3 files:

• arch/um/drivers/umcast_user.c, line 105
• net/ipv4/ip_sockglue.c
  • line 918
  • line 1097
  • line 1640
• tools/testing/selftests/net/timestamping.c, line 431