From 468389997e6277f1defeef53a4bf56b741a79eff Mon Sep 17 00:00:00 2001
From: Francisco Paisana <francisco.paisana@softwareradiosystems.com>
Date: Wed, 17 Jun 2020 12:41:35 +0100
Subject: [PATCH] fix header sn check

---
 lib/src/upper/rlc_um_nr.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/src/upper/rlc_um_nr.cc b/lib/src/upper/rlc_um_nr.cc
index b1d12fe14..99ca4b6f6 100644
--- a/lib/src/upper/rlc_um_nr.cc
+++ b/lib/src/upper/rlc_um_nr.cc
@@ -582,7 +582,7 @@ uint32_t rlc_um_nr_read_data_pdu_header(const uint8_t*            payload,
     header->si = (rlc_nr_si_field_t)((*ptr >> 6) & 0x03); // 2 bits SI
     header->sn = *ptr & 0x3F;                             // 6 bits SN
     // sanity check
-    if (header->si == rlc_nr_si_field_t::full_sdu and not header->sn == 0) {
+    if (header->si == rlc_nr_si_field_t::full_sdu and header->sn != 0) {
       fprintf(stderr, "Malformed PDU, reserved bits are set.\n");
       return 0;
     }