extended_function struct

Author: sflow

src/sflow.h

@@ -602,6 +602,14 @@ typedef struct _SFLExtended_decap {
     uint32_t innerHeaderOffset;
 } SFLExtended_decap;
 
+/* Software function */
+/* Name of software function generating this event */
+/* opaque = flow_data; enterprise = 0; format = 1038 */
+typedef struct _SFLExtended_function {
+  SFLString symbol;
+} SFLExtended_function;
+#define SFL_MAX_FUNCTION_SYMBOL_LEN 64
+
 enum SFLFlow_type_tag {
   /* enterprise = 0, format = ... */
   SFLFLOW_HEADER    = 1,      /* Packet headers are sampled */
@@ -635,6 +643,7 @@ enum SFLFlow_type_tag {
     SFLFLOW_EX_DECAP_IN        = 1028,
     SFLFLOW_EX_VNI_OUT         = 1029,
     SFLFLOW_EX_VNI_IN          = 1030,
+  SFLFLOW_EX_FUNCTION          = 1038,
   SFLFLOW_EX_SOCKET4       = 2100,
   SFLFLOW_EX_SOCKET6       = 2101,
   SFLFLOW_EX_PROXYSOCKET4  = 2102,
@@ -683,6 +692,7 @@ typedef union _SFLFlow_type {
   SFLExtended_decap tunnel_decap;
   SFLExtended_TCP_info tcp_info;
   SFLExtended_entities entities;
+  SFLExtended_function function;
 } SFLFlow_type;
 
 typedef struct _SFLFlow_sample_element {

src/sflowtool.c

@@ -3481,6 +3481,20 @@ static void readExtendedEntities(SFSample *sample)
   sf_log_next32(sample, "entities_dst_index");
 }
 
+/*_________________----------------------------__________________
+  _________________    readExtendedFunction    __________________
+  -----------------____________________________------------------
+*/
+
+static void readExtendedFunction(SFSample *sample)
+{
+  sf_logf(sample, "extendedType", "function");
+  char fnSymbol[SFL_MAX_FUNCTION_SYMBOL_LEN+1];
+  if(getString(sample, fnSymbol, SFL_MAX_FUNCTION_SYMBOL_LEN) > 0) {
+    sf_logf(sample, "symbol", fnSymbol);
+  }
+}
+
 /*_________________---------------------------__________________
   _________________    readFlowSample_v2v4    __________________
   -----------------___________________________------------------
@@ -3843,6 +3857,7 @@ static void readDiscardSample(SFSample *sample)
       // TODO: separate fn for flow-sample elements?
       switch(tag) {
       case SFLFLOW_HEADER:     readFlowSample_header(sample); break;
+      case SFLFLOW_EX_FUNCTION: readExtendedFunction(sample); break;
       default: skipTLVRecord(sample, tag, length, "discard_sample_element"); break;
       }
       lengthCheck(sample, "discard_sample_element", start, length);