Defined in 1 files as a macro:

• bsd/net/if_types.h, line 91 (as a macro)

Referenced in 4 files:

• bsd/net/dlil.c, line 603
• bsd/net/if_disc.c, line 101
• bsd/net/if_loop.c, line 660
• bsd/netinet6/ip6_input.c, line 620