vm mode works - first test

4 files changed, 145 insertions, 15 deletions

diff --git a/src/stateless/cp/trex_stream.cpp b/src/stateless/cp/trex_stream.cpp
index cad603e2..8ea0c011 100644
--- a/src/stateless/cp/trex_stream.cpp
+++ b/src/stateless/cp/trex_stream.cpp
@@ -103,6 +103,8 @@ TrexStream::TrexStream(uint8_t type,
 
     m_pkt.binary = NULL;
     m_pkt.len    = 0;
+    m_has_vm = false;
+    m_vm_prefix_size = 0;
 
     m_rx_check.m_enable = false;
 
diff --git a/src/stateless/cp/trex_stream.h b/src/stateless/cp/trex_stream.h
index 3e48d7e4..c42d0985 100644
--- a/src/stateless/cp/trex_stream.h
+++ b/src/stateless/cp/trex_stream.h
@@ -133,6 +133,9 @@ public:
             TrexStream * dp=new TrexStream(m_type,m_port_id,m_stream_id);
         
 
+            dp->m_has_vm = m_has_vm;
+            dp->m_vm_prefix_size = m_vm_prefix_size;
+
             dp->m_isg_usec      = m_isg_usec;
             dp->m_next_stream_id = m_next_stream_id;
 
@@ -165,6 +168,7 @@ public:
     /* basic */
     uint8_t       m_type;
     uint8_t       m_port_id;
+    uint16_t      m_vm_prefix_size;
     uint32_t      m_stream_id;              /* id from RPC can be anything */
     
 
@@ -175,6 +179,8 @@ public:
     /* indicators */
     bool          m_enabled;
     bool          m_self_start;
+    bool          m_has_vm; /* do we have instructions to run */
+
 
     CStreamPktData   m_pkt;
     /* pkt */
diff --git a/src/stateless/dp/trex_stateless_dp_core.cpp b/src/stateless/dp/trex_stateless_dp_core.cpp
index 9b62fabd..c7bb7636 100644
--- a/src/stateless/dp/trex_stateless_dp_core.cpp
+++ b/src/stateless/dp/trex_stateless_dp_core.cpp
@@ -106,13 +106,45 @@ 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); 
+
+    /* TBD run VM on the pointer 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();
     }
+
 }
 
 
@@ -442,6 +474,10 @@ 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 +522,59 @@ 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->m_has_vm  == false ) {
+                /* 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);
+    }else{
+        /* 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..1ae8cbbc 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 */
@@ -86,8 +96,10 @@ private:
     TrexStream *        m_ref_stream_info; /* the stream info */
     CGenNodeStateless  * m_next_stream;
 
+    uint8_t *            m_original_packet_data_prefix; /* pointer to the original first pointer 64/128/512 */
+
     /* pad to match the size of CGenNode */
-    uint8_t             m_pad_end[56];
+    uint8_t             m_pad_end[48];
 
 
 
@@ -256,13 +268,51 @@ 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(uint8_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: