Defined in 1 files as a macro:

• include/uapi/linux/in.h, line 117 (as a macro)

Referenced in 3 files:

• net/ipv4/ip_sockglue.c
  • line 1343
  • line 1422
• net/xfrm/xfrm_user.c, line 4266
• tools/testing/selftests/net/nettest.c, line 1456