Defined in 1 files as a macro:

• bsd/netinet/in.h, line 337 (as a macro)

Referenced in 2 files:

• bsd/netinet/ip_input.c, line 1812
• bsd/netinet/ip_output.c
  • line 1087
  • line 1111
  • line 1219
  • line 1237