Defined in 1 files as a macro:

• include/uapi/linux/ip.h, line 58 (as a macro)

Referenced in 4 files:

• include/uapi/linux/ip.h, line 77
• net/ipv4/ah4.c, line 87
• net/ipv4/cipso_ipv4.c, line 1507
• net/ipv4/ip_options.c
  • line 206
  • line 215
  • line 269