Diff: libs/Network/net_util.h

Revision:

2:1df0b61d3b5a

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libs/Network/net_util.h	Fri Feb 28 18:52:52 2014 -0800
@@ -0,0 +1,99 @@
+#ifndef _NET_UTIL_H
+#define _NET_UTIL_H
+
+#include <cstdint>
+#include <cstdlib>
+#include <cstdio>
+#include <cstring>
+
+#define HARDWARE_TYPE_ETHERNET 1
+
+#define SIZEOF_MAC 6
+#define SIZEOF_IP  4
+
+#define MAC_STR_LEN     18
+#define IP_STR_LEN      16
+
+// uint16_t htons(uint16_t v);
+#define htons(a) ((((a) >> 8) & 0xFF) | (((a) << 8) & 0xFF00))
+#define ntohs(a) htons(a)
+
+// uint32_t htonl(uint32_t v);
+#define htonl(a) ((((a) >> 24) & 0x000000FF) | (((a) >> 8) & 0x0000FF00) | (((a) << 8) & 0x00FF0000) | (((a) << 24) & 0xFF000000))
+#define ntohl(a) htonl(a)
+
+#define compare_ip(ip1, ip2, mask) (((ip1) & (mask)) == ((ip2) & (mask)))
+
+#define IPA(a, b, c, d) (((a) << 24) | ((b) << 16) | ((c) << 8) | (d))
+
+typedef uint32_t  IP_ADDR;
+typedef uint32_t* NET_PACKET;
+typedef uint8_t*  NET_PAYLOAD;
+
+// class netcore;
+class Encapsulated;
+class Encapsulator;
+class NetworkInterface;
+
+class Encapsulated
+{
+public:
+    virtual int   receive(NetworkInterface*, NET_PACKET, int) = 0;
+    virtual int   construct(NetworkInterface*, NET_PACKET, int) = 0;
+};
+
+class Encapsulator : public Encapsulated
+{
+public:
+    virtual NET_PACKET  get_new_packet_buffer(NetworkInterface*)    = 0;
+    virtual NET_PAYLOAD get_payload_buffer(NET_PACKET)      = 0;
+    virtual void        set_payload_length(NET_PACKET, int) = 0;
+};
+
+class Period_receiver
+{
+public:
+    virtual int periodical(int, NetworkInterface*, NET_PACKET, int) = 0;
+};
+
+class NetworkInterface : public Encapsulator {
+public:
+    virtual const uint8_t* get_name(void) { return interface_name; };
+//     virtual void provide_net(netcore* n){ net = n; }
+
+//     virtual bool if_up(void) = 0;
+
+    virtual bool can_read_packet(void) = 0;
+    virtual int read_packet(uint8_t**) = 0;
+    void release_read_packet(uint8_t*);
+
+    virtual bool can_write_packet(void) = 0;
+    virtual int write_packet(uint8_t *, int) = 0;
+
+    virtual void* request_packet_buffer(void) = 0;
+
+    virtual void set_ip(uint32_t new_ip)     { ip_address = new_ip; };
+    virtual void set_mac(uint8_t new_mac[6]) { memcpy(mac_address, new_mac, 6); };
+
+    bool isUp() { return up; }
+
+//     netcore* net;
+    uint8_t* interface_name;
+
+    IP_ADDR ip_address;
+    IP_ADDR ip_mask;
+
+    uint8_t mac_address[6];
+
+    bool up;
+};
+
+extern const uint8_t broadcast[6];
+
+bool compare_mac(const uint8_t*, const uint8_t*, const uint8_t*);
+int format_mac(uint8_t*, uint8_t*);
+int format_ip(uint32_t, uint8_t*);
+int checksum16(uint8_t*, int, int);
+uint32_t crc32(uint8_t* buf, int length);
+
+#endif /* _NET_UTIL_H */