Defined in 2 files as a macro:

• bsd/netinet/ip.h, line 89 (as a macro)
• osfmk/kdp/kdp_udp.h, line 101 (as a macro)

Referenced in 5 files:

• bsd/netinet/ip_compat.h, line 529
• bsd/netinet/ip_icmp.c, line 175
• bsd/netinet/ip_output.c
  • line 256
  • line 911
• bsd/netinet/tcp_output.c, line 981
• bsd/netinet6/ipsec.c
  • line 2109
  • line 2112