Defined in 1 files as a macro:

• include/uapi/linux/ip.h, line 76 (as a macro)

Referenced in 3 files:

• net/ipv4/cipso_ipv4.c
  • line 2018
  • line 2203
• net/ipv4/ip_options.c
  • line 70
  • line 75
• net/xfrm/xfrm_output.c
  • line 175
  • line 301