Merge ipv4 checksum issue

7 files changed, 281 insertions, 79 deletions

diff --git a/src/stateless/cp/trex_stateless_port.cpp b/src/stateless/cp/trex_stateless_port.cpp
index 8ee46d29..99b6565c 100644
--- a/src/stateless/cp/trex_stateless_port.cpp
+++ b/src/stateless/cp/trex_stateless_port.cpp
@@ -631,7 +631,10 @@ TrexStatelessPort::validate(void) {
 
 
 void
-TrexStatelessPort::get_port_effective_rate(uint64_t &bps, uint64_t &pps) {
+TrexStatelessPort::get_port_effective_rate(double &pps,
+                                           double &bps_L1,
+                                           double &bps_L2,
+                                           double &percentage) {
 
     if (get_stream_count() == 0) {
         return;
@@ -641,8 +644,11 @@ TrexStatelessPort::get_port_effective_rate(uint64_t &bps, uint64_t &pps) {
         generate_streams_graph();
     }
 
-    bps = m_graph_obj->get_max_bps_l2() * m_factor;
-    pps = m_graph_obj->get_max_pps() * m_factor;
+    pps        = m_graph_obj->get_max_pps()    * m_factor;
+    bps_L1     = m_graph_obj->get_max_bps_l1() * m_factor;
+    bps_L2     = m_graph_obj->get_max_bps_l2() * m_factor;
+    percentage = (bps_L1 / get_port_speed_bps()) * 100.0;
+    
 }
 
 /************* Trex Port Owner **************/
@@ -651,7 +657,7 @@ TrexPortOwner::TrexPortOwner() {
     m_is_free = true;
 
     /* for handlers random generation */
-    srand(time(NULL));
+    m_seed = time(NULL);
 }
 
 /**
@@ -669,7 +675,7 @@ TrexPortOwner::generate_handler() {
 
     /* generate 8 bytes of random handler */
     for (int i = 0; i < 8; ++i) {
-        ss << alphanum[rand() % (sizeof(alphanum) - 1)];
+        ss << alphanum[rand_r(&m_seed) % (sizeof(alphanum) - 1)];
     }
 
     return (ss.str());
diff --git a/src/stateless/cp/trex_stateless_port.h b/src/stateless/cp/trex_stateless_port.h
index b0b0ddf3..49e69757 100644
--- a/src/stateless/cp/trex_stateless_port.h
+++ b/src/stateless/cp/trex_stateless_port.h
@@ -93,6 +93,8 @@ private:
     /* handler genereated internally */
     std::string  m_handler;
     
+    /* seed for generating random values */
+    unsigned int m_seed;
 
     /* just references defaults... */
     static const std::string g_unowned_name;
@@ -316,10 +318,11 @@ public:
      * 
      * @author imarom (07-Jan-16)
      * 
-     * @param bps 
-     * @param pps 
      */
-    void get_port_effective_rate(uint64_t &bps, uint64_t &pps);
+    void get_port_effective_rate(double &pps,
+                                 double &bps_L1,
+                                 double &bps_L2,
+                                 double &percentage);
 
 private:
 
@@ -441,9 +444,9 @@ public:
     static const std::initializer_list<std::string> g_types;
     static const std::initializer_list<std::string> g_ops;
 
-    mul_type_e  m_type;
-    mul_op_e    m_op;
-    double      m_value;
+    mul_type_e   m_type;
+    mul_op_e     m_op;
+    double       m_value;
 };
 
 #endif /* __TREX_STATELESS_PORT_H__ */
diff --git a/src/stateless/cp/trex_stream.cpp b/src/stateless/cp/trex_stream.cpp
index 05c14cba..f1c93a11 100644
--- a/src/stateless/cp/trex_stream.cpp
+++ b/src/stateless/cp/trex_stream.cpp
@@ -22,6 +22,7 @@ limitations under the License.
 #include <cstddef>
 #include <string.h>
 #include <assert.h>
+#include <trex_stateless.h>
 
 /**************************************
  * stream
@@ -93,25 +94,30 @@ void TrexStream::Dump(FILE *fd){
     fprintf(fd," type    : %s \n",get_stream_type_str(m_type).c_str());
 
     if ( m_type == TrexStream::stCONTINUOUS ) {
-        fprintf(fd," pps        : %f \n",m_pps);
     }
     if (m_type == TrexStream::stSINGLE_BURST) {
-        fprintf(fd," pps        : %f \n",m_pps);
         fprintf(fd," burst      : %lu \n",(ulong)m_burst_total_pkts);
     }
     if (m_type == TrexStream::stMULTI_BURST) {
-        fprintf(fd," pps        : %f \n",m_pps);
         fprintf(fd," burst      : %lu \n",(ulong)m_burst_total_pkts);
         fprintf(fd," mburst     : %lu \n",(ulong)m_num_bursts);
         if (m_ibg_usec>0.0) {
             fprintf(fd," m_ibg_usec : %f \n",m_ibg_usec);
         }
     }
+
+    fprintf(fd," rate    :\n\n");
+
+    fprintf(fd," pps         : %f\n", m_rate.get_pps());
+    fprintf(fd," bps L1      : %f\n", m_rate.get_bps_L1());
+    fprintf(fd," bps L2      : %f\n", m_rate.get_bps_L2());
+    fprintf(fd," percentage  : %f\n", m_rate.get_percentage());
+
 }
 
  
 TrexStream::TrexStream(uint8_t type,
-                       uint8_t port_id, uint32_t stream_id) : m_port_id(port_id), m_stream_id(stream_id) {
+                       uint8_t port_id, uint32_t stream_id) : m_port_id(port_id), m_stream_id(stream_id) , m_rate(*this) {
 
     /* default values */
     m_type            = type;
@@ -127,7 +133,6 @@ TrexStream::TrexStream(uint8_t type,
     m_rx_check.m_enable = false;
 
 
-    m_pps=-1.0;
     m_burst_total_pkts=0; 
     m_num_bursts=1; 
     m_ibg_usec=0.0;  
@@ -238,3 +243,16 @@ int TrexStreamTable::size() {
 }
 
 
+/**************************************
+ * TrexStreamRate
+ *************************************/
+uint64_t
+TrexStreamRate::get_line_speed_bps() {
+    TrexStatelessPort *port = get_stateless_obj()->get_port_by_id(m_stream.m_port_id);
+    return port->get_port_speed_bps();
+}
+
+double
+TrexStreamRate::get_pkt_size() {
+    return m_stream.get_pkt_size();
+}
diff --git a/src/stateless/cp/trex_stream.h b/src/stateless/cp/trex_stream.h
index 5240e96d..cc05c198 100644
--- a/src/stateless/cp/trex_stream.h
+++ b/src/stateless/cp/trex_stream.h
@@ -107,12 +107,184 @@ public:
         }
 }; 
 
+class TrexStream;
+
+/**
+ * describes a stream rate
+ * 
+ * @author imarom (18-Feb-16)
+ */
+class TrexStreamRate {
+
+
+public:
+
+    enum rate_type_e {
+        RATE_INVALID,
+        RATE_PPS,
+        RATE_BPS_L1,
+        RATE_BPS_L2,
+        RATE_PERCENTAGE
+    };
+
+    TrexStreamRate(TrexStream &stream) : m_stream(stream) {
+        m_pps        = 0;
+        m_bps_L1     = 0;
+        m_bps_L2     = 0;
+        m_percentage = 0;
+    }
+
+
+    TrexStreamRate& operator=(const TrexStreamRate& other) {
+        m_pps        = other.m_pps;
+        m_bps_L1     = other.m_bps_L1;
+        m_bps_L2     = other.m_bps_L2;
+        m_percentage = other.m_percentage;
+
+        return (*this);
+    }
+
+    /**
+     * set the base rate 
+     * other values will be dervied from this value 
+     * 
+     */
+    void set_base_rate(rate_type_e type, double value) {
+        m_pps        = 0;
+        m_bps_L1     = 0;
+        m_bps_L2     = 0;
+        m_percentage = 0;
+
+        assert(value > 0);
+
+        switch (type) {
+        case RATE_PPS:
+            m_pps = value;
+            break;
+        case RATE_BPS_L1:
+            m_bps_L1 = value;
+            break;
+        case RATE_BPS_L2:
+            m_bps_L2 = value;
+            break;
+        case RATE_PERCENTAGE:
+            m_percentage = value;
+            break;
+
+        default:
+            assert(0);
+        
+        }
+    }
+
+    double get_pps() {
+        if (m_pps == 0) {
+            calculate();
+        }
+        return (m_pps);
+    }
+    
+    double get_bps_L1() {
+        if (m_bps_L1 == 0) {
+            calculate();
+        }
+        return (m_bps_L1);
+    }
+
+    double get_bps_L2() {
+        if (m_bps_L2 == 0) {
+            calculate();
+        }
+        return m_bps_L2;
+    }
+
+    double get_percentage() {
+        if (m_percentage == 0) {
+            calculate();
+        }
+        return m_percentage;
+    }
+
+  
+
+    /* update the rate by a factor */
+    void update_factor(double factor) {
+        /* if all are non zero - it works, if only one (base) is also works */
+        m_pps        *= factor;
+        m_bps_L1     *= factor;
+        m_bps_L2     *= factor;
+        m_percentage *= factor;
+    }
+
+   
+
+private:
+
+    /**
+     * calculates all the rates from the base rate
+     * 
+     */
+    void calculate() {
+
+        if (m_pps != 0) {
+            calculate_from_pps();
+        } else if (m_bps_L1 != 0) {
+            calculate_from_bps_L1();
+        } else if (m_bps_L2 != 0) {
+            calculate_from_bps_L2();
+        } else if (m_percentage != 0) {
+            calculate_from_percentage();
+        } else {
+            assert(0);
+        }
+    }
+
+
+    uint64_t get_line_speed_bps();
+    double get_pkt_size();
+
+    void calculate_from_pps() {
+        m_bps_L1     = m_pps * (get_pkt_size() + 24) * 8;
+        m_bps_L2     = m_pps * (get_pkt_size() + 4) * 8;
+        m_percentage = (m_bps_L1 / get_line_speed_bps()) * 100.0;
+    }
+
+
+    void calculate_from_bps_L1() {
+        m_bps_L2     = m_bps_L1 * ( (get_pkt_size() + 4.0) / (get_pkt_size() + 24.0) );
+        m_pps        = m_bps_L2 / (8 * (get_pkt_size() + 4));
+        m_percentage = (m_bps_L1 / get_line_speed_bps()) * 100.0;
+    }
+
+
+    void calculate_from_bps_L2() {
+        m_bps_L1     = m_bps_L2 * ( (get_pkt_size() + 24.0) / (get_pkt_size() + 4.0));
+        m_pps        = m_bps_L2 / (8 * (get_pkt_size() + 4));
+        m_percentage = (m_bps_L1 / get_line_speed_bps()) * 100.0;
+    }
+
+    void calculate_from_percentage() {
+        m_bps_L1     = (m_percentage / 100.0) * get_line_speed_bps();
+        m_bps_L2     = m_bps_L1 * ( (get_pkt_size() + 4.0) / (get_pkt_size() + 24.0) );
+        m_pps        = m_bps_L2 / (8 * (get_pkt_size() + 4));
+
+    }
+
+    double       m_pps;
+    double       m_bps_L1;
+    double       m_bps_L2;
+    double       m_percentage;
+
+    /* reference to the owner class */
+    TrexStream  &m_stream;
+};
 
 /**
  * Stateless Stream
  * 
  */
 class TrexStream {
+friend class TrexStreamRate;
 
 public:
     enum STREAM_TYPE {
@@ -155,12 +327,29 @@ public:
         m_next_stream_id = next_stream_id;
     }
 
-    double get_pps() const {
-        return m_pps;
+
+    double get_pps() {
+        return m_rate.get_pps();
+    }
+
+    double get_bps_L1() {
+        return m_rate.get_bps_L1();
     }
 
-    void set_pps(double pps){
-        m_pps = pps;
+    double get_bps_L2() {
+        return m_rate.get_bps_L2();
+    }
+
+    double get_bw_percentage() {
+        return m_rate.get_percentage();
+    }
+
+    void set_rate(TrexStreamRate::rate_type_e type, double value) {
+        m_rate.set_base_rate(type, value);
+    }
+
+    void update_rate_factor(double factor) {
+        m_rate.update_factor(factor);
     }
 
     void set_type(uint8_t type){
@@ -227,13 +416,14 @@ public:
 
         dp->m_expected_pkt_len      =   m_expected_pkt_len;
         dp->m_rx_check              =   m_rx_check;
-        dp->m_pps                   =   m_pps;
         dp->m_burst_total_pkts      =   m_burst_total_pkts;
         dp->m_num_bursts            =   m_num_bursts;
         dp->m_ibg_usec              =   m_ibg_usec;
         dp->m_flags                 =   m_flags;
         dp->m_action_count          =   m_action_count;
 
+        dp->m_rate                  =   m_rate;
+
         return(dp);
     }
 
@@ -245,19 +435,11 @@ public:
         }
     }
 
-    double get_burst_length_usec() const {
-        return ( (m_burst_total_pkts / m_pps) * 1000 * 1000);
+    double get_burst_length_usec()  {
+        return ( (m_burst_total_pkts / get_pps()) * 1000 * 1000);
     }
 
-    double get_bps_l2() {
-        return get_bps(false);
-    }
-
-    double get_bps_l1() {
-        return get_bps(true);
-    }
-
- 
+   
     void Dump(FILE *fd);
 
     StreamVmDp * getDpVm(){
@@ -325,8 +507,6 @@ public:
 
     } m_rx_check;
 
-    double m_pps;
-
     uint32_t   m_burst_total_pkts; /* valid in case of burst stSINGLE_BURST,stMULTI_BURST*/
 
     uint32_t   m_num_bursts; /* valid in case of stMULTI_BURST */
@@ -338,8 +518,7 @@ public:
 
 private:
 
-    double get_bps(bool layer1) {
-
+    double get_pkt_size() {
         /* lazy calculate the expected packet length */
         if (m_expected_pkt_len == 0) {
             /* if we have a VM - it might have changed the packet (even random) */
@@ -349,17 +528,13 @@ private:
                 m_expected_pkt_len = m_vm.calc_expected_pkt_size(m_pkt.len);
             }
         }
-        
-
-        /* packet length + 4 CRC bytes to bits and multiplied by PPS */
 
-        if (layer1) {
-            /* layer one includes preamble, frame delimiter and interpacket gap */
-            return (m_pps * (m_expected_pkt_len + 4 + 8 + 12) * 8);
-        } else {
-            return (m_pps * (m_expected_pkt_len + 4) * 8);
-        }
+        return m_expected_pkt_len;
     }
+
+  
+    /* no access to this without a lazy build method */
+    TrexStreamRate m_rate;
 };
 
 
diff --git a/src/stateless/cp/trex_stream_vm.h b/src/stateless/cp/trex_stream_vm.h
index c16545d9..0bd00711 100644
--- a/src/stateless/cp/trex_stream_vm.h
+++ b/src/stateless/cp/trex_stream_vm.h
@@ -227,7 +227,7 @@ public:
 
     inline void run_inc(uint8_t * flow_var) {
         uint8_t *p = (flow_var + m_flow_offset);
-        if (*p >= (m_max_val-m_step)) {
+        if (*p > (m_max_val-m_step)) {
             *p = m_min_val;
         } else {
             *p = *p + m_step;
@@ -236,7 +236,7 @@ public:
 
     inline void run_dec(uint8_t * flow_var) {
         uint8_t *p = (flow_var + m_flow_offset);
-        if (*p <= (m_min_val+m_step)) {
+        if (*p < (m_min_val+m_step)) {
             *p = m_max_val;
         } else {
             *p = *p - m_step;
@@ -257,7 +257,7 @@ public:
 
     inline void run_inc(uint8_t * flow_var) {
         uint16_t *p = (uint16_t *)(flow_var + m_flow_offset);
-        if (*p >= (m_max_val-m_step)) {
+        if (*p > (m_max_val-m_step)) {
             *p = m_min_val;
         } else {
             *p = *p + m_step;
@@ -266,7 +266,7 @@ public:
 
     inline void run_dec(uint8_t * flow_var) {
         uint16_t *p = (uint16_t *)(flow_var + m_flow_offset);
-        if (*p <= (m_min_val+m_step)) {
+        if (*p < (m_min_val+m_step)) {
             *p = m_max_val;
         } else {
             *p = *p - m_step;
@@ -286,7 +286,7 @@ public:
 
     inline void run_inc(uint8_t * flow_var) {
         uint32_t *p = (uint32_t *)(flow_var + m_flow_offset);
-        if (*p >= (m_max_val-m_step)) {
+        if (*p > (m_max_val-m_step)) {
             *p = m_min_val;
         } else {
             *p = *p + m_step;
@@ -295,7 +295,7 @@ public:
 
     inline void run_dec(uint8_t * flow_var) {
         uint32_t *p = (uint32_t *)(flow_var + m_flow_offset);
-        if (*p <= (m_min_val+m_step)) {
+        if (*p < (m_min_val+m_step)) {
             *p = m_max_val;
         } else {
             *p = *p - m_step;
@@ -315,7 +315,7 @@ public:
 
     inline void run_inc(uint8_t * flow_var) {
         uint64_t *p = (uint64_t *)(flow_var + m_flow_offset);
-        if (*p >= (m_max_val-m_step) ) {
+        if (*p > (m_max_val-m_step) ) {
             *p = m_min_val;
         } else {
             *p = *p + m_step;
@@ -324,7 +324,7 @@ public:
 
     inline void run_dec(uint8_t * flow_var) {
         uint64_t *p = (uint64_t *)(flow_var + m_flow_offset);
-        if (*p <= m_min_val+m_step) {
+        if (*p < m_min_val+m_step) {
             *p = m_max_val;
         } else {
             *p = *p - m_step;
diff --git a/src/stateless/cp/trex_streams_compiler.cpp b/src/stateless/cp/trex_streams_compiler.cpp
index 9d048dbd..aca74498 100644
--- a/src/stateless/cp/trex_streams_compiler.cpp
+++ b/src/stateless/cp/trex_streams_compiler.cpp
@@ -459,7 +459,7 @@ TrexStreamsCompiler::compile_internal(uint8_t                                por
  * 
  */
 void
-TrexStreamsCompiler::compile_stream(const TrexStream *stream,
+TrexStreamsCompiler::compile_stream(TrexStream *stream,
                                     double factor,
                                     uint8_t dp_core_count,
                                     std::vector<TrexStreamsCompiledObj *> &objs,
@@ -500,7 +500,7 @@ TrexStreamsCompiler::compile_stream(const TrexStream *stream,
  * 
  */
 void
-TrexStreamsCompiler::compile_stream_on_all_cores(const TrexStream *stream,
+TrexStreamsCompiler::compile_stream_on_all_cores(TrexStream *stream,
                                                  double factor,
                                                  uint8_t dp_core_count,
                                                  std::vector<TrexStreamsCompiledObj *> &objs,
@@ -509,7 +509,7 @@ TrexStreamsCompiler::compile_stream_on_all_cores(const TrexStream *stream,
 
     std::vector<TrexStream *> core_streams(dp_core_count);
 
-    double per_core_rate          = (stream->m_pps * (factor / dp_core_count));
+    double per_core_factor        = (factor / dp_core_count);
     int per_core_burst_total_pkts = (stream->m_burst_total_pkts / dp_core_count);
 
     /* for each core - creates its own version of the stream */
@@ -521,7 +521,7 @@ TrexStreamsCompiler::compile_stream_on_all_cores(const TrexStream *stream,
 
 
         /* adjust rate and packets count */
-        dp_stream->m_pps               = per_core_rate;
+        dp_stream->update_rate_factor(per_core_factor);
         dp_stream->m_burst_total_pkts  = per_core_burst_total_pkts;
 
         core_streams[i] = dp_stream;
@@ -547,7 +547,7 @@ TrexStreamsCompiler::compile_stream_on_all_cores(const TrexStream *stream,
  * 
  */
 void
-TrexStreamsCompiler::compile_stream_on_single_core(const TrexStream *stream,
+TrexStreamsCompiler::compile_stream_on_single_core(TrexStream *stream,
                                                    double factor,
                                                    TrexStreamsCompiledObj *obj,
                                                    int new_id,
@@ -560,7 +560,7 @@ TrexStreamsCompiler::compile_stream_on_single_core(const TrexStream *stream,
 
     /* compile the VM if exists */
     if (!stream->m_vm.is_vm_empty()) {
-        ((TrexStream *)stream)->vm_compile();
+        stream->vm_compile();
         dp_stream->m_vm_dp = stream->m_vm_dp->clone();
     }
 
@@ -581,7 +581,7 @@ TrexStreamsCompiler::compile_stream_on_single_core(const TrexStream *stream,
  * @param stream 
  */
 void
-TrexStreamsGraph::add_rate_events_for_stream(double &offset_usec, const TrexStream *stream) {
+TrexStreamsGraph::add_rate_events_for_stream(double &offset_usec, TrexStream *stream) {
 
     switch (stream->get_type()) {
    
@@ -604,7 +604,7 @@ TrexStreamsGraph::add_rate_events_for_stream(double &offset_usec, const TrexStre
  * 
  */
 void
-TrexStreamsGraph::add_rate_events_for_stream_cont(double &offset_usec, const TrexStream *stream) {
+TrexStreamsGraph::add_rate_events_for_stream_cont(double &offset_usec, TrexStream *stream) {
 
     TrexStreamsGraphObj::rate_event_st start_event;
 
@@ -613,8 +613,8 @@ TrexStreamsGraph::add_rate_events_for_stream_cont(double &offset_usec, const Tre
 
     start_event.time = offset_usec + stream->m_isg_usec;
     start_event.diff_pps    = stream->get_pps();
-    start_event.diff_bps_l2 = ((TrexStream *)stream)->get_bps_l2();
-    start_event.diff_bps_l1 = ((TrexStream *)stream)->get_bps_l1();
+    start_event.diff_bps_l2 = stream->get_bps_L2();
+    start_event.diff_bps_l1 = stream->get_bps_L1();
     m_graph_obj->add_rate_event(start_event);
 
     /* no more events after this stream */
@@ -629,7 +629,7 @@ TrexStreamsGraph::add_rate_events_for_stream_cont(double &offset_usec, const Tre
  * 
  */
 void
-TrexStreamsGraph::add_rate_events_for_stream_single_burst(double &offset_usec, const TrexStream *stream) {
+TrexStreamsGraph::add_rate_events_for_stream_single_burst(double &offset_usec, TrexStream *stream) {
     TrexStreamsGraphObj::rate_event_st start_event;
     TrexStreamsGraphObj::rate_event_st stop_event;
 
@@ -640,9 +640,9 @@ TrexStreamsGraph::add_rate_events_for_stream_single_burst(double &offset_usec, c
 
      /* start event */
     start_event.time = offset_usec + stream->m_isg_usec;
-    start_event.diff_pps = stream->get_pps();
-    start_event.diff_bps_l2 = ((TrexStream *)stream)->get_bps_l2();
-    start_event.diff_bps_l1 = ((TrexStream *)stream)->get_bps_l1();
+    start_event.diff_pps    = stream->get_pps();
+    start_event.diff_bps_l2 = stream->get_bps_L2();
+    start_event.diff_bps_l1 = stream->get_bps_L1();
     m_graph_obj->add_rate_event(start_event);
 
     /* stop event */
@@ -662,7 +662,7 @@ TrexStreamsGraph::add_rate_events_for_stream_single_burst(double &offset_usec, c
  * 
  */
 void
-TrexStreamsGraph::add_rate_events_for_stream_multi_burst(double &offset_usec, const TrexStream *stream) {
+TrexStreamsGraph::add_rate_events_for_stream_multi_burst(double &offset_usec, TrexStream *stream) {
     TrexStreamsGraphObj::rate_event_st start_event;
     TrexStreamsGraphObj::rate_event_st stop_event;
 
@@ -672,8 +672,8 @@ TrexStreamsGraph::add_rate_events_for_stream_multi_burst(double &offset_usec, co
     /* for debug purposes */
     
     start_event.diff_pps     = stream->get_pps();
-    start_event.diff_bps_l2  = ((TrexStream *)stream)->get_bps_l2();
-    start_event.diff_bps_l1  = ((TrexStream *)stream)->get_bps_l1();
+    start_event.diff_bps_l2  = stream->get_bps_L2();
+    start_event.diff_bps_l1  = stream->get_bps_L1();
     start_event.stream_id    = stream->m_stream_id;
 
     stop_event.diff_pps      = -(start_event.diff_pps);
@@ -714,7 +714,7 @@ TrexStreamsGraph::generate_graph_for_one_root(uint32_t root_stream_id) {
     double offset = 0;
 
     while (true) {
-        const TrexStream *stream;
+        TrexStream *stream;
         
         /* fetch the stream from the hash - if it is not present, report an error */
         try {
diff --git a/src/stateless/cp/trex_streams_compiler.h b/src/stateless/cp/trex_streams_compiler.h
index a3a1f8f7..b8b0be37 100644
--- a/src/stateless/cp/trex_streams_compiler.h
+++ b/src/stateless/cp/trex_streams_compiler.h
@@ -123,19 +123,19 @@ private:
     void add_warning(const std::string &warning);
     void err(const std::string &err);
 
-    void compile_stream(const TrexStream *stream,
+    void compile_stream(TrexStream *stream,
                         double factor,
                         uint8_t dp_core_count,
                         std::vector<TrexStreamsCompiledObj *> &objs,
                         GraphNodeMap &nodes);
 
-    void compile_stream_on_single_core(const TrexStream *stream,
+    void compile_stream_on_single_core(TrexStream *stream,
                                        double factor,
                                        TrexStreamsCompiledObj *obj,
                                        int new_id,
                                        int new_next_id);
 
-    void compile_stream_on_all_cores(const TrexStream *stream,
+    void compile_stream_on_all_cores(TrexStream *stream,
                                      double factor,
                                      uint8_t dp_core_count,
                                      std::vector<TrexStreamsCompiledObj *> &objs,
@@ -245,13 +245,13 @@ private:
 
     void generate_graph_for_one_root(uint32_t root_stream_id);
 
-    void add_rate_events_for_stream(double &offset, const TrexStream *stream);
-    void add_rate_events_for_stream_cont(double &offset_usec, const TrexStream *stream);
-    void add_rate_events_for_stream_single_burst(double &offset_usec, const TrexStream *stream);
-    void add_rate_events_for_stream_multi_burst(double &offset_usec, const TrexStream *stream);
+    void add_rate_events_for_stream(double &offset, TrexStream *stream);
+    void add_rate_events_for_stream_cont(double &offset_usec, TrexStream *stream);
+    void add_rate_events_for_stream_single_burst(double &offset_usec, TrexStream *stream);
+    void add_rate_events_for_stream_multi_burst(double &offset_usec, TrexStream *stream);
 
     /* for fast processing of streams */
-    std::unordered_map<uint32_t, const TrexStream *> m_streams_hash;
+    std::unordered_map<uint32_t, TrexStream *> m_streams_hash;
 
     /* main object to hold the graph - returned to the user */
     TrexStreamsGraphObj *m_graph_obj;