Defined in 2 files as a macro:

• sys/external/bsd/ipf/netinet/ip_compat.h, line 924 (as a macro)
• sys/netinet/tcp.h, line 85 (as a macro)

Referenced in 9 files:

• external/bsd/ipf/dist/lib/tcpoptnames.c, line 17
• sys/dist/pf/net/pf.c, line 2889
• sys/dist/pf/net/pf_osfp.c, line 219
• sys/external/bsd/ipf/netinet/ip_compat.h, line 923
• sys/external/bsd/ipf/netinet/ip_state.c, line 1913
• sys/kern/uipc_mbufdebug.c, line 883
• sys/net/npf/npf_inet.c, line 328
• sys/netinet/tcp_input.c
  • line 3167
  • line 4434
• sys/netinet/tcp_output.c, line 1132