Defined in 2 files as a macro:

• bsd/netinet/ip.h, line 99 (as a macro)
• osfmk/kdp/kdp_udp.h, line 107 (as a macro)

Referenced in 5 files:

• bsd/netinet/ip_compat.h, line 530
• bsd/netinet/ip_icmp.c, line 209
• bsd/netinet/ip_output.c
  • line 372
  • line 1355
• bsd/netinet/tcp_output.c, line 1483
• bsd/netinet6/ipsec.c
  • line 2231
  • line 2234