Defined in 2 files as a macro:

• bsd/netinet/ip.h, line 87 (as a macro)
• osfmk/kdp/kdp_udp.h, line 93 (as a macro)

Referenced in 6 files:

• bsd/netinet/ip_compat.h, line 528
• bsd/netinet/ip_icmp.c, line 170
• bsd/netinet/ip_output.c
  • line 268
  • line 886
• bsd/netinet/tcp_output.c, line 873
• bsd/netinet6/ipsec.c
  • line 2020
  • line 2023
• bsd/netinet6/natpt_dispatch.c, line 568