#include <linux/types.h> // __wsum is missing from types.h, compare: // https://github.com/torvalds/linux/blob/v5.13/include/uapi/linux/types.h // https://github.com/libbpf/libbpf/blob/v1.5.0/include/linux/types.h typedef __u32 __bitwise __wsum; #include <bpf/bpf_helpers.h> #include <linux/bpf.h> // needed for TC_ACT_* #include <linux/pkt_cls.h> #include <linux/ptrace.h> #include <sys/socket.h>