Defined in 2 files as a macro:

• include/uapi/linux/if_link.h, line 1003 (as a macro)
• tools/include/uapi/linux/if_link.h, line 971 (as a macro)

Referenced in 2 files:

• net/core/rtnetlink.c, line 2901
• tools/lib/bpf/netlink.c, line 294