Hanoch's review comments #1 : fixed performancei issue

with the stateless node

3 files changed, 109 insertions, 48 deletions

diff --git a/src/stateless/dp/trex_stateless_dp_core.cpp b/src/stateless/dp/trex_stateless_dp_core.cpp
index 73387f0e..9c10504e 100644
--- a/src/stateless/dp/trex_stateless_dp_core.cpp
+++ b/src/stateless/dp/trex_stateless_dp_core.cpp
@@ -21,20 +21,10 @@ limitations under the License.
 #include <trex_stateless_dp_core.h>
 #include <trex_stateless_messaging.h>
 #include <trex_streams_compiler.h>
+#include <trex_stream_node.h>
 
 #include <bp_sim.h>
 
-/**
- * extended info for the stateless node 
- * TODO: 
- * static_assert(sizeof(dp_node_extended_info_st) <= sizeof(CGenNodeStateless::m_pad_end), "hello"); 
- */
-typedef struct dp_node_extended_info_ {
-    double   next_time_offset;
-    uint8_t  is_stream_active;
-
-} dp_node_extended_info_st;
-
 TrexStatelessDpCore::TrexStatelessDpCore(uint8_t thread_id, CFlowGenListPerThread *core) {
     m_thread_id = thread_id;
     m_core = core;
@@ -62,29 +52,6 @@ TrexStatelessDpCore::start() {
 }
 
 void
-TrexStatelessDpCore::handle_pkt_event(CGenNode *node) {
-
-    //TODO: optimize the fast path here...
-
-    CGenNodeStateless *node_sl = (CGenNodeStateless *)node;
-    dp_node_extended_info_st *opaque = (dp_node_extended_info_st *)node_sl->get_opaque_storage();
-
-    /* is this stream active ? */
-    if (!opaque->is_stream_active) {
-        m_core->free_node(node);
-        return;
-    }
-
-    m_core->m_node_gen.m_v_if->send_node(node);
-
-    /* in case of continues */
-    node->m_time += opaque->next_time_offset;
-
-    /* insert a new event */
-    m_core->m_node_gen.m_p_queue.push(node);
-}
-
-void
 TrexStatelessDpCore::add_cont_stream(double pps, const uint8_t *pkt, uint16_t pkt_len) {
     CGenNodeStateless *node = m_core->create_node_sl();
 
@@ -100,9 +67,8 @@ TrexStatelessDpCore::add_cont_stream(double pps, const uint8_t *pkt, uint16_t pk
     uint16_t pkt_size = pkt_len;
     const uint8_t *stream_pkt = pkt;
 
-    dp_node_extended_info_st *opaque = (dp_node_extended_info_st *)node->get_opaque_storage();
-    opaque->next_time_offset = 1.0 / pps;
-    opaque->is_stream_active = 1;
+    node->m_next_time_offset = 1.0 / pps;
+    node->m_is_stream_active = 1;
 
     /* allocate const mbuf */
     rte_mbuf_t *m = CGlobalInfo::pktmbuf_alloc(node->get_socket_id(), pkt_size);
@@ -145,8 +111,7 @@ TrexStatelessDpCore::stop_traffic() {
        for every active node - make sure next time
        the scheduler invokes it, it will be free */
     for (auto node : m_active_nodes) {
-        dp_node_extended_info_st *opaque = (dp_node_extended_info_st *)node->get_opaque_storage();
-        opaque->is_stream_active = 0;
+        node->m_is_stream_active = 0;
     }
     m_active_nodes.clear();
 
diff --git a/src/stateless/dp/trex_stateless_dp_core.h b/src/stateless/dp/trex_stateless_dp_core.h
index d95f7eeb..fa3c5b22 100644
--- a/src/stateless/dp/trex_stateless_dp_core.h
+++ b/src/stateless/dp/trex_stateless_dp_core.h
@@ -29,9 +29,8 @@ limitations under the License.
 class TrexStatelessCpToDpMsgBase;
 class TrexStatelessDpStart;
 class CFlowGenListPerThread;
-class CGenNode;
-class TrexStreamsCompiledObj;
 class CGenNodeStateless;
+class TrexStreamsCompiledObj;
 
 class TrexStatelessDpCore {
 
@@ -52,13 +51,6 @@ public:
     void start();
 
     /**
-     * handle pkt event
-     * 
-     * @author imarom (27-Oct-15)
-     */
-    void handle_pkt_event(CGenNode *node);
-
-    /**
      * dummy traffic creator
      * 
      * @author imarom (27-Oct-15)
diff --git a/src/stateless/dp/trex_stream_node.h b/src/stateless/dp/trex_stream_node.h
new file mode 100644
index 00000000..49481a5c
--- /dev/null
+++ b/src/stateless/dp/trex_stream_node.h
@@ -0,0 +1,104 @@
+/*
+ Itay Marom
+ Cisco Systems, Inc.
+*/
+
+/*
+Copyright (c) 2015-2015 Cisco Systems, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+#ifndef __TREX_STREAM_NODE_H__
+#define __TREX_STREAM_NODE_H__
+
+#include <bp_sim.h>
+
+class TrexStatelessDpCore;
+
+/* this is a event for stateless */
+struct CGenNodeStateless : public CGenNodeBase  {
+friend class TrexStatelessDpCore;
+
+private:
+    void *              m_cache_mbuf;
+
+    double              m_next_time_offset;
+    uint8_t             m_is_stream_active;
+
+    /* pad to match the size of CGenNode */
+    uint8_t             m_pad_end[39];
+
+
+public:
+
+    inline bool is_active() {
+        return m_is_stream_active;
+    }
+
+        
+    /**
+     * main function to handle an event of a packet tx
+     * 
+     */
+    inline void handle(CFlowGenListPerThread *thread) {
+
+        thread->m_node_gen.m_v_if->send_node( (CGenNode *)this);
+
+        /* in case of continues */
+        m_time += m_next_time_offset;
+
+        /* insert a new event */
+        thread->m_node_gen.m_p_queue.push( (CGenNode *)this);
+    }
+
+    void set_socket_id(socket_id_t socket){
+        m_socket_id=socket;
+    }
+
+    socket_id_t get_socket_id(){
+        return ( m_socket_id );
+    }
+
+    inline void set_mbuf_cache_dir(pkt_dir_t  dir){
+        if (dir) {
+            m_flags |=NODE_FLAGS_DIR;
+        }else{
+            m_flags &=~NODE_FLAGS_DIR;
+        }
+    }
+
+    inline pkt_dir_t get_mbuf_cache_dir(){
+        return ((pkt_dir_t)( m_flags &1));
+    }
+
+
+
+    inline void set_cache_mbuf(rte_mbuf_t * m){
+        m_cache_mbuf=(void *)m;
+        m_flags |= NODE_FLAGS_MBUF_CACHE;
+    }
+
+    inline rte_mbuf_t * get_cache_mbuf(){
+        if ( m_flags &NODE_FLAGS_MBUF_CACHE ) {
+            return ((rte_mbuf_t *)m_cache_mbuf);
+        }else{
+            return ((rte_mbuf_t *)0);
+        }
+    }
+
+
+} __rte_cache_aligned; ;
+
+static_assert(sizeof(CGenNodeStateless) == sizeof(CGenNode), "sizeof(CGenNodeStateless) != sizeof(CGenNode)");
+
+#endif /* __TREX_STREAM_NODE_H__ */