Restructure project and organize code.

src/xdp/utils/helpers.h

@@ -0,0 +1,33 @@
+#pragma once
+
+#include <common/all.h>
+
+#include <linux/bpf.h>
+#include <linux/bpf_common.h>
+
+#include <bpf_helpers.h>
+#include <xdp/xdp_helpers.h>
+#include <xdp/prog_dispatcher.h>
+
+#define likely(x) __builtin_expect(!!(x), 1)
+#define unlikely(x) __builtin_expect(!!(x), 0)
+
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+#define htons(x) ((__be16)___constant_swab16((x)))
+#define ntohs(x) ((__be16)___constant_swab16((x)))
+#define htonl(x) ((__be32)___constant_swab32((x)))
+#define ntohl(x) ((__be32)___constant_swab32((x)))
+#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+#define htons(x) (x)
+#define ntohs(X) (x)
+#define htonl(x) (x)
+#define ntohl(x) (x)
+#endif
+
+#ifndef memcpy
+#define memcpy(dest, src, n) __builtin_memcpy((dest), (src), (n))
+#endif
+
+static __always_inline u8 IsIpInRange(u32 src_ip, u32 net_ip, u8 cidr);
+
+#include "helpers.c"