From 45fd47b6ec7cc8067df0112068b5d39577b63ad7 Mon Sep 17 00:00:00 2001
From: Anton Ottosson <antonott@kth.se>
Date: Tue, 13 Jul 2021 02:58:23 +0200
Subject: [PATCH] Small fix to last commit

If we cannot determine the length of the mac frame body, we should probably not attempt to parse it.
---
 lib/parse_mac.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/parse_mac.cc b/lib/parse_mac.cc
index 707cf8d..b6c49ea 100644
--- a/lib/parse_mac.cc
+++ b/lib/parse_mac.cc
@@ -101,13 +101,13 @@ void parse(pmt::pmt_t pdu) {
 
 	char *frame = (char*)pmt::blob_data(d_msg);
 
-	int body_start;
+	int body_start = frame_len;
 
 	if((((h->frame_control) >> 2) & 63) == 2) {
 		body_start = 24; // DATA
 	} else if((((h->frame_control) >> 2) & 63) == 34) {
 		body_start = 26; // QoS Data
-	} else return;
+	}
 
 	int body_len = frame_len - body_start;