Defined in 2 files as a macro:

• drivers/staging/rtl8712/ip.h, line 64 (as a macro)
• include/linux/ip.h, line 64 (as a macro)

Referenced in 4 files:

• net/bridge/br_multicast.c, line 390
• net/ipv4/ah4.c, line 98
• net/ipv4/igmp.c
  • line 346
  • line 687
• net/ipv4/ip_options.c, line 426