From: hecke <hecke@erblast>
Date: Fri, 23 Jun 2017 06:55:01 +0000 (+0200)
Subject: add note that explains relaxed bytes-left check #6150
X-Git-Tag: v234~106^2
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F6151%2Fhead;p=thirdparty%2Fsystemd.git

add note that explains relaxed bytes-left check #6150
---

diff --git a/src/libsystemd-network/lldp-neighbor.c b/src/libsystemd-network/lldp-neighbor.c
index 03f6628ab08..f1fecba6fa4 100644
--- a/src/libsystemd-network/lldp-neighbor.c
+++ b/src/libsystemd-network/lldp-neighbor.c
@@ -250,6 +250,9 @@ int lldp_neighbor_parse(sd_lldp_neighbor *n) {
                                 return -EBADMSG;
                         }
 
+                        /* Note that after processing the SD_LLDP_TYPE_END left could still be > 0
+                         * as the message may contain padding (see IEEE 802.1AB-2016, sec. 8.5.12) */
+
                         goto end_marker;
 
                 case SD_LLDP_TYPE_CHASSIS_ID: