From 3a087e951d96f509c75344ad6791591e10e4f1cd Mon Sep 17 00:00:00 2001
From: Ivan Nardi <12729895+IvanNardi@users.noreply.github.com>
Date: Tue, 11 Jan 2022 15:23:39 +0100
Subject: Add a "confidence" field about the reliability of the classification.
 (#1395)

As a general rule, the higher the confidence value, the higher the
"reliability/precision" of the classification.

In other words, this new field provides an hint about "how" the flow
classification has been obtained.
For example, the application may want to ignore classification "by-port"
(they are not real DPI classifications, after all) or give a second
glance at flows classified via LRU caches (because of false positives).

Setting only one value for the confidence field is a bit tricky: more
work is probably needed in the next future to tweak/fix/improve the logic.
---
 src/lib/protocols/sflow.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/lib/protocols/sflow.c')

diff --git a/src/lib/protocols/sflow.c b/src/lib/protocols/sflow.c
index 3a9f03bec..7151e6ad7 100644
--- a/src/lib/protocols/sflow.c
+++ b/src/lib/protocols/sflow.c
@@ -38,7 +38,7 @@ void ndpi_search_sflow(struct ndpi_detection_module_struct *ndpi_struct, struct
      && (packet->payload[0] == 0) && (packet->payload[1] == 0) && (packet->payload[2] == 0)
      && ((packet->payload[3] == 2) || (packet->payload[3] == 5))) {
     NDPI_LOG_INFO(ndpi_struct, "found sflow\n");
-    ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_SFLOW, NDPI_PROTOCOL_UNKNOWN);
+    ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_SFLOW, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI);
     return;
   }
 
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