Defined in 2 files as a macro:

• bsd/netinet/ip.h, line 93 (as a macro)
• osfmk/kdp/kdp_udp.h, line 101 (as a macro)

Referenced in 5 files:

• bsd/netinet/ip_compat.h, line 524
• bsd/netinet/ip_icmp.c, line 186
• bsd/netinet/ip_output.c
  • line 308
  • line 1192
• bsd/netinet/tcp_output.c, line 1104
• bsd/netinet6/ipsec.c
  • line 2213
  • line 2216