Defined in 2 files as a macro:

• include/uapi/linux/if_tun.h, line 75 (as a macro)
• tools/include/uapi/linux/if_tun.h, line 73 (as a macro)

Referenced in 4 files:

• arch/um/drivers/vector_user.c
  • line 143
  • line 512
• drivers/net/tap.c
  • line 28
  • line 342
  • line 540
  • line 651
  • line 796
  • line 1177
• drivers/net/tun.c
  • line 99
  • line 1768
  • line 2058
  • line 2094
  • line 2375
• tools/testing/selftests/net/tap.c, line 215