commit c6407659f3e66ec2aa5c25c3bfb975020e110766
author june li <junelizh@foxmail.com> Mon Nov 13 18:43:43 2017 +0800
committer Jukka Rissanen <jukka.rissanen@linux.intel.com> Wed Nov 15 12:28:18 2017 +0200
tree 797fb1ccc4d90f6a8a75234512ab7345baa6c658
parent 8dab561689e1dc322054b806184fb38a87140ffa

net: tcp: Add the frag back to caller allocated net_pkt

The original fragment chain of incoming packet will be lost and leaked
in case of early error, add frag back to packet and
let the caller do unref.

Fixes #4323

Signed-off-by: june li <junelizh@foxmail.com>

subsys/net/ip/tcp.c

diff --git a/subsys/net/ip/tcp.c b/subsys/net/ip/tcp.c
index 79ad971..21c743b 100644
--- a/subsys/net/ip/tcp.c
+++ b/subsys/net/ip/tcp.c
@@ -391,6 +391,8 @@
 
 		if (pkt_allocated) {
 			net_pkt_unref(pkt);
+		} else {
+			pkt->frags = tail;
 		}
 
 		return NULL;
@@ -400,6 +402,8 @@
 	if (!header) {
 		if (pkt_allocated) {
 			net_pkt_unref(pkt);
+		} else {
+			pkt->frags = tail;
 		}
 
 		return NULL;