Defined in 1 files as a macro:

• include/uapi/linux/ip.h, line 65 (as a macro)

Referenced in 3 files:

• net/ipv4/ah4.c, line 106
• net/ipv4/ip_options.c
  • line 284
  • line 308
• net/netfilter/nft_exthdr.c
  • line 106
  • line 110
  • line 549