Defined in 3 files as a struct:

• contrib/ipfilter/ipsd/Celler/ip_compat.h, line 124 (as a struct)
• contrib/ipfilter/ipsend/.OLD/ip_compat.h, line 126 (as a struct)
• sys/netinet/ip_var.h, line 44 (as a struct)

Referenced in 8 files:

• contrib/traceroute/traceroute.c, line 1734
• sys/netinet/tcp_input.c
  • line 695
  • line 695
• sys/netinet/tcp_output.c
  • line 198
  • line 1084
• sys/netinet/tcp_stacks/rack.c
  • line 6872
  • line 8086
• sys/netinet/tcpip.h, line 42
• sys/netinet/udp_usrreq.c
  • line 503
  • line 504
  • line 505
  • line 508
• sys/netinet/udp_var.h, line 43
• sys/netpfil/pf/in4_cksum.c
  • line 88
  • line 102