[src/trunk]: src/sys/net - Fix bridge_enqueue() which was broken by last comm...

[msaitoh <msaitoh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/53338e37c1be
branches:  trunk
changeset: 835954:53338e37c1be
user:      msaitoh <msaitoh%NetBSD.org@localhost>
date:      Tue Sep 18 09:27:35 2018 +0000

description:
- Fix bridge_enqueue() which was broken by last commit. Use correct mbuf
  pointer.
- Modify comment.

diffstat:

 sys/net/if_bridge.c |  15 +++++++++------
 1 files changed, 9 insertions(+), 6 deletions(-)

diffs (45 lines):

diff -r 1ab1b31c2d4f -r 53338e37c1be sys/net/if_bridge.c
--- a/sys/net/if_bridge.c       Tue Sep 18 09:09:26 2018 +0000
+++ b/sys/net/if_bridge.c       Tue Sep 18 09:27:35 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_bridge.c,v 1.157 2018/09/14 11:05:09 msaitoh Exp $  */
+/*     $NetBSD: if_bridge.c,v 1.158 2018/09/18 09:27:35 msaitoh Exp $  */
 
 /*
  * Copyright 2001 Wasabi Systems, Inc.
@@ -80,7 +80,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_bridge.c,v 1.157 2018/09/14 11:05:09 msaitoh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_bridge.c,v 1.158 2018/09/18 09:27:35 msaitoh Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_bridge_ipf.h"
@@ -1764,7 +1764,9 @@
        bridge_release_member(sc, bif, &psref);
 
        /*
-        * Clear any in-bound checksum flags for this packet.
+        * Before enqueueing this packet to the destination interface,
+        * clear any in-bound checksum flags to prevent them from being
+        * misused as out-bound flags.
         */
        m->m_pkthdr.csum_flags = 0;
 
@@ -1978,11 +1980,12 @@
                                sc->sc_if.if_oerrors++;
                                goto next;
                        }
-
                        /*
-                        * Clear any in-bound checksum flags for this packet.
+                        * Before enqueueing this packet to the destination
+                        * interface, clear any in-bound checksum flags to
+                        * prevent them from being misused as out-bound flags.
                         */
-                       m->m_pkthdr.csum_flags = 0;
+                       mc->m_pkthdr.csum_flags = 0;
 
                        ACQUIRE_GLOBAL_LOCKS();
                        bridge_enqueue(sc, dst_if, mc, 1);