parse_tcp
static __always_inline bool parse_tcp(void *data, __u64 off, void *data_end,
static __noinline bool parse_tcp(void *data, __u64 off, void *data_end,
static __noinline bool parse_tcp(struct bpf_dynptr *skb_ptr, __u64 off,
bool parse_tcp(void *data, void *data_end,
parse_tcp(struct pkt_info *info, void *transport_hdr, void *data_end)