Added TestCID

TestCID.cc

+/* 
+ * File:   TestCID.cc
+ * Author: Jiachen CHen
+ * 
+ * Created on April 30, 2019, 1:48 AM
+ */
+
+#include "TestCID.hh"
+#include <assert.h>
+#include <inttypes.h>
+
+CLICK_DECLS
+
+TestCID::TestCID() = default;
+
+TestCID::~TestCID() = default;
+
+static void print_buf(void *content, size_t size) {
+    size_t i;
+    uint8_t *ptr = (uint8_t *) content;
+    for (i = 0; i < size; i++) {
+        printf("%02" PRIx8 " " , ptr[i]);
+    }
+    printf("\n");
+}
+
+static uint16_t get_cid_host(uint16_t cid) {
+    return (cid >> 12) & 0xF;
+}
+
+static uint16_t get_cid_content(uint16_t cid) {
+    return cid & 0xFFF;
+}
+
+static uint16_t get_cid(uint16_t host, uint16_t content) {
+    assert(host <= 0xF && content <= 0xFFF);
+    return (host << 12) | content;
+}
+
+int TestCID::initialize(ErrorHandler* errh __attribute ((__unused__))) {
+    uint16_t cid = 0xabcd;
+
+    printf("cid=0x%" PRIx16 ", host=0x%" PRIx16 ", content=0x%" PRIx16 "\n",
+            cid, get_cid_host(cid), get_cid_content(cid));
+    printf("buf=");
+    print_buf(&cid, sizeof (cid));
+
+    uint16_t cid2 = get_cid(0xb, 0xeef);
+    printf("cid2=0x%" PRIx16 ", host=0x%" PRIx16 ", content=0x%" PRIx16 "\n",
+            cid2, get_cid_host(cid2), get_cid_content(cid2));
+    printf("buf=");
+    print_buf(&cid2, sizeof (cid2));
+
+    return 0;
+}
+
+CLICK_ENDDECLS
+
+EXPORT_ELEMENT(TestCID)

TestCID.click

+require(package "click_for_comnet");
+
+test :: TestCID;
+
+DriverManager(stop);

TestCID.hh

+/* 
+ * File:   TestCID.hh
+ * Author: Jiachen Chen
+ *
+ * Created on April 30, 2019, 1:48 AM
+ */
+
+#ifndef TESTCID_HH
+#define TESTCID_HH
+
+#include <click/config.h>
+#include <click/element.hh>
+#include <click/error.hh>
+
+CLICK_DECLS
+
+class TestCID : public Element {
+public:
+    TestCID();
+    ~TestCID();
+    
+    const char *class_name() const { return "TestCID"; }
+    int initialize(ErrorHandler *errh);
+
+    
+private:
+
+};
+
+CLICK_ENDDECLS
+
+#endif /* TESTCID_HH */
+

TestLittleEndian.cc

@@ -8,6 +8,7 @@
 #include "TestLittleEndian.hh"
 #include <endian.h>
 #include <inttypes.h>
+CLICK_DECLS
 
 TestLittleEndian::TestLittleEndian() = default;
 
@@ -17,21 +18,32 @@ static void print_buf(void *content, size_t size) {
     size_t i;
     uint8_t *ptr = (uint8_t *)content;
     for (i = 0; i < size; i++) {
-        printf("%02" PRIx8, ptr[i]);
+        printf("%02" PRIx8 " ", ptr[i]);
     }
     printf("\n");
 }
 
 int TestLittleEndian::initialize(ErrorHandler* errh __attribute ((__unused__))) {
-    uint32_t i;
+    uint32_t i, net, host;
     
-    i = 0x12345678;
+    i = 0xdeadbeef;
+    printf("i=0x%" PRIx32 "\n", i);
+    printf("in memory: ");
     print_buf(&i, sizeof(i));
     
-    i = htobe32(0x12345678);
-    print_buf(&i, sizeof(i));
+    net = htobe32(i);
+    printf("net=0x%" PRIx32 "\n", net);
+    printf("in memory: ");
+    print_buf(&net, sizeof(net));
+    
+    host = be32toh(net);
+    printf("host=0x%" PRIx32 "\n", host);
+    printf("in memory: ");
+    print_buf(&host, sizeof(host));
+    
 
     return 0;
 }
+CLICK_ENDDECLS
 
 EXPORT_ELEMENT(TestLittleEndian)
\ No newline at end of file

TestLittleEndian.hh

@@ -4,13 +4,15 @@
  *
  * Created on April 30, 2019, 12:20 AM
  */
+
+#ifndef TESTLITTLEENDIAN_HH
+#define TESTLITTLEENDIAN_HH
+
 #include <click/config.h>
 #include <click/element.hh>
 #include <click/error.hh>
 
-
-#ifndef TESTLITTLEENDIAN_HH
-#define TESTLITTLEENDIAN_HH
+CLICK_DECLS
 
 class TestLittleEndian : public Element {
 public:
@@ -24,5 +26,7 @@ private:
 
 };
 
+CLICK_ENDDECLS
+
 #endif /* TESTLITTLEENDIAN_HH */