Code reorganized.

[ngadmin] / lib / src / protocol.h

diff --git a/lib/src/protocol.h b/lib/src/protocol.h
new file mode 100644 (file)
index 0000000..abc7707
--- /dev/null
+++ b/lib/src/protocol.h
@@ -0,0 +1,115 @@
+
+#ifndef DEF_PROTOCOL
+#define DEF_PROTOCOL
+
+
+#include <stdio.h>
+#include <stdbool.h>
+#include <string.h>
+#include <arpa/inet.h>
+#include <netinet/ether.h>
+
+#include <ngadmin.h>
+#include "list.h"
+#include "lib.h"
+
+
+
+
+
+struct ng_header {
+ char unk1; // always 1
+ char code;
+ char error;
+ char unk2; // always 0
+ unsigned short attr; // attribute code which caused error
+ char unk3[2]; // always 0
+ char client_mac[6];
+ char switch_mac[6];
+ unsigned int seqnum;
+ char proto_id[4]; // always "NSDP"
+ char unk4[4]; // always 0
+ char data[0];
+} __attribute__((packed)) ;
+
+struct attr_header {
+ unsigned short attr;
+ unsigned short size;
+ char data[0];
+} __attribute__((packed)) ;
+
+
+struct ng_packet {
+ union {
+  char *buffer;
+  struct ng_header *nh;
+ };
+ int maxlen;
+ struct attr_header *ah;
+};
+
+
+struct attr {
+ unsigned short attr;
+ unsigned short size;
+ void *data;
+};
+
+
+
+extern const unsigned short helloRequest[];
+
+extern const struct ether_addr nullMac;
+
+
+
+// 
+int min (int a, int b);
+
+// 
+void initNgHeader (struct ng_header *nh, char code, const struct ether_addr *client_mac, const struct ether_addr *switch_mac, unsigned int seqnum);
+
+// 
+bool validateNgHeader (const struct ng_header *nh, char code, const struct ether_addr *client_mac, const struct ether_addr *switch_mac, unsigned int seqnum);
+
+// 
+void initNgPacket (struct ng_packet *np);
+
+// 
+void addPacketAttr (struct ng_packet *np, unsigned short attr, unsigned short size, void* data);
+
+// 
+void addPacketEmptyAttr (struct ng_packet *np, unsigned short attr);
+
+// 
+void addPacketByteAttr (struct ng_packet *np, unsigned short attr, char val);
+
+// 
+void addPacketShortAttr (struct ng_packet *np, unsigned short attr, short val);
+
+// 
+int getPacketTotalSize (const struct ng_packet *np);
+
+// 
+struct attr* newEmptyAttr (unsigned short attr);
+
+// 
+struct attr* newAttr (unsigned short attr, unsigned short size, void *data);
+
+// 
+struct attr* newByteAttr (unsigned short attr, unsigned char value);
+
+// 
+void freeAttr (struct attr *at);
+
+// 
+List* extractPacketAttributes (struct ng_packet *np, char *error, unsigned short *attr_error);
+
+// 
+void extractSwitchAttributes (struct swi_attr *sa, const List *l);
+
+
+
+
+#endif
+