2 files changed, 175 insertions, 17 deletions

diff --git a/src/stateless/dp/trex_stateless_dp_core.cpp b/src/stateless/dp/trex_stateless_dp_core.cpp
index 22ca922d..585ff2c7 100644
--- a/src/stateless/dp/trex_stateless_dp_core.cpp
+++ b/src/stateless/dp/trex_stateless_dp_core.cpp
@@ -106,12 +106,56 @@ std::string CGenNodeStateless::get_stream_state_str(stream_state_t stream_state)
 }
 
 
+rte_mbuf_t   * CGenNodeStateless::alloc_node_with_vm(){
+
+    rte_mbuf_t        * m;
+    /* alloc small packet buffer*/
+    uint16_t prefix_size = prefix_header_size();
+    m = CGlobalInfo::pktmbuf_alloc( get_socket_id(), prefix_size );
+    if (m==0) {
+        return (m);
+    }
+    /* TBD remove this, should handle cases of error */
+    assert(m);
+    char *p=rte_pktmbuf_append(m, prefix_size);
+    memcpy( p ,m_original_packet_data_prefix, prefix_size); 
+
+
+    /* run the VM program */
+    StreamDPVmInstructionsRunner runner;
+
+    runner.run( m_vm_program_size, 
+                m_vm_program,
+                m_vm_flow_var,
+                (uint8_t*)p);
+
+
+    rte_mbuf_t * m_const = get_const_mbuf();
+    if (  m_const != NULL) {
+        utl_rte_pktmbuf_add_after(m,m_const);
+    }
+    return (m);
+}
+
+
 void CGenNodeStateless::free_stl_node(){
     /* if we have cache mbuf free it */
     rte_mbuf_t * m=get_cache_mbuf();
     if (m) {
         rte_pktmbuf_free(m);
         m_cache_mbuf=0;
+    }else{
+        /* non cache - must have an header */
+         m=get_const_mbuf();
+         if (m) {
+             rte_pktmbuf_free(m); /* reduce the ref counter */
+         }
+         free_prefix_header();
+    }
+    if (m_vm_flow_var) {
+        /* free flow var */
+        free(m_vm_flow_var);
+        m_vm_flow_var=0;
     }
 }
 
@@ -423,6 +467,7 @@ TrexStatelessDpCore::add_stream(TrexStatelessDpPerPort * lp_port,
     CGenNodeStateless *node = m_core->create_node_sl();
 
     /* add periodic */
+    node->m_cache_mbuf=0;
     node->m_type = CGenNode::STATELESS_PKT;
 
     node->m_ref_stream_info  =   stream->clone_as_dp();
@@ -442,6 +487,10 @@ TrexStatelessDpCore::add_stream(TrexStatelessDpPerPort * lp_port,
 
     pkt_dir_t dir = m_core->m_node_gen.m_v_if->port_id_to_dir(stream->m_port_id);
     node->m_flags = 0; 
+    node->m_src_port =0;
+    node->m_original_packet_data_prefix = 0;
+
+
 
     /* set socket id */
     node->set_socket_id(m_core->m_node_gen.m_socket_id);
@@ -486,23 +535,77 @@ TrexStatelessDpCore::add_stream(TrexStatelessDpPerPort * lp_port,
 
     node->m_port_id = stream->m_port_id;
 
-    /* allocate const mbuf */
-    rte_mbuf_t *m = CGlobalInfo::pktmbuf_alloc(node->get_socket_id(), pkt_size);
-    assert(m);
-
-    char *p = rte_pktmbuf_append(m, pkt_size);
-    assert(p);
-    /* copy the packet */
-    memcpy(p,stream_pkt,pkt_size);
-
     /* set dir 0 or 1 client or server */
     node->set_mbuf_cache_dir(dir);
 
-    /* TBD repace the mac if req we should add flag  */
-    m_core->m_node_gen.m_v_if->update_mac_addr_from_global_cfg(dir, m);
 
-    /* set the packet as a readonly */
-    node->set_cache_mbuf(m);
+    if (stream->is_vm()  == false ) {
+        /* no VM */
+
+        node->m_vm_flow_var =  NULL;
+        node->m_vm_program  =  NULL;
+        node->m_vm_program_size =0;
+
+                /* allocate const mbuf */
+        rte_mbuf_t *m = CGlobalInfo::pktmbuf_alloc(node->get_socket_id(), pkt_size);
+        assert(m);
+    
+        char *p = rte_pktmbuf_append(m, pkt_size);
+        assert(p);
+        /* copy the packet */
+        memcpy(p,stream_pkt,pkt_size);
+    
+        /* TBD repace the mac if req we should add flag  */
+        m_core->m_node_gen.m_v_if->update_mac_addr_from_global_cfg(dir,(uint8_t*) p);
+    
+        /* set the packet as a readonly */
+        node->set_cache_mbuf(m);
+
+        node->m_original_packet_data_prefix =0;
+    }else{
+
+        /* set the program */
+        TrexStream * local_mem_stream = node->m_ref_stream_info;
+
+        StreamVmDp  * lpDpVm = local_mem_stream->getDpVm();
+
+        node->m_vm_flow_var =  lpDpVm->clone_bss(); /* clone the flow var */
+        node->m_vm_program  =  lpDpVm->get_program(); /* same ref to the program */
+        node->m_vm_program_size =lpDpVm->get_program_size();
+
+
+        /* we need to copy the object */
+        if ( pkt_size > stream->m_vm_prefix_size  ) {
+            /* we need const packet */
+            uint16_t const_pkt_size  = pkt_size - stream->m_vm_prefix_size ;
+            rte_mbuf_t *m = CGlobalInfo::pktmbuf_alloc(node->get_socket_id(), const_pkt_size );
+            assert(m);
+
+            char *p = rte_pktmbuf_append(m, const_pkt_size);
+            assert(p);
+
+            /* copy packet data */
+            memcpy(p,(stream_pkt+ stream->m_vm_prefix_size),const_pkt_size);
+
+            node->set_const_mbuf(m);
+        }
+
+
+        if (stream->m_vm_prefix_size > pkt_size ) {
+            stream->m_vm_prefix_size = pkt_size;
+        }
+        /* copy the headr */
+        uint16_t header_size = stream->m_vm_prefix_size;
+        assert(header_size);
+        node->alloc_prefix_header(header_size);
+        uint8_t *p=node->m_original_packet_data_prefix;
+        assert(p);
+
+        memcpy(p,stream_pkt , header_size);
+        /* TBD repace the mac if req we should add flag  */
+        m_core->m_node_gen.m_v_if->update_mac_addr_from_global_cfg(dir, p);
+    }
+
 
     CDpOneStream one_stream;
 
diff --git a/src/stateless/dp/trex_stream_node.h b/src/stateless/dp/trex_stream_node.h
index 111af845..d33785fe 100644
--- a/src/stateless/dp/trex_stream_node.h
+++ b/src/stateless/dp/trex_stream_node.h
@@ -54,6 +54,16 @@ struct CGenNodeStateless : public CGenNodeBase  {
 friend class TrexStatelessDpCore;
 
 public:
+
+    /* flags MASKS*/
+    enum {
+        SL_NODE_FLAGS_DIR                  =1, //USED by master
+        SL_NODE_FLAGS_MBUF_CACHE           =2, //USED by master
+
+        SL_NODE_CONST_MBUF                =4
+
+    };
+
     enum {                                          
             ss_FREE_RESUSE =1, /* should be free by scheduler */
             ss_INACTIVE    =2, /* will be active by other stream or stopped */
@@ -83,13 +93,20 @@ private:
     uint32_t            m_multi_bursts; /* in case of multi_burst how many bursts */
 
     /* cache line 1 */
-    TrexStream *        m_ref_stream_info; /* the stream info */
+    TrexStream *         m_ref_stream_info; /* the stream info */
     CGenNodeStateless  * m_next_stream;
 
-    /* pad to match the size of CGenNode */
-    uint8_t             m_pad_end[56];
+    uint8_t *            m_original_packet_data_prefix; /* pointer to the original first pointer 64/128/512 */
+
+    /* Fast Field VM section */
+    uint8_t *            m_vm_flow_var; /* pointer to the vm flow var */
+    uint8_t *            m_vm_program;  /* pointer to the program */
+    uint16_t             m_vm_program_size; /* up to 64K op codes */
 
+    /* End Fast Field VM Section */
 
+    /* pad to match the size of CGenNode */
+    uint8_t             m_pad_end[30];
 
 
 public:
@@ -256,13 +273,51 @@ public:
     }
 
     inline rte_mbuf_t * get_cache_mbuf(){
-        if ( m_flags &NODE_FLAGS_MBUF_CACHE ) {
+        if ( m_flags & NODE_FLAGS_MBUF_CACHE ) {
+            return ((rte_mbuf_t *)m_cache_mbuf);
+        }else{
+            return ((rte_mbuf_t *)0);
+        }
+    }
+
+    inline void set_const_mbuf(rte_mbuf_t * m){
+        m_cache_mbuf=(void *)m;
+        m_flags |= SL_NODE_CONST_MBUF;
+    }
+
+    inline rte_mbuf_t * get_const_mbuf(){
+        if ( m_flags &SL_NODE_CONST_MBUF ) {
             return ((rte_mbuf_t *)m_cache_mbuf);
         }else{
             return ((rte_mbuf_t *)0);
         }
     }
 
+    /* prefix header exits only in non cache mode size is 64/128/512  other are not possible right now */
+    inline void alloc_prefix_header(uint16_t size){
+         set_prefix_header_size(size);
+         m_original_packet_data_prefix = (uint8_t *)malloc(size);
+         assert(m_original_packet_data_prefix);
+    }
+
+    inline void free_prefix_header(){
+         if (m_original_packet_data_prefix) {
+             free(m_original_packet_data_prefix);
+         }
+    }
+
+    /* prefix headr could be 64/128/512 */
+    inline void set_prefix_header_size(uint16_t size){
+        m_src_port=size;
+    }
+
+    inline uint16_t prefix_header_size(){
+        return (m_src_port);
+    }
+
+
+    rte_mbuf_t   * alloc_node_with_vm();
+
     void free_stl_node();
 
 public: