[src/phil-wifi]: src/sys/net Skip pfil_run_hooks if no packet filter enabled ...

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

details:   https://anonhg.NetBSD.org/src/rev/7a9a92ff2640
branches:  phil-wifi
changeset: 931350:7a9a92ff2640
user:      nat <nat%NetBSD.org@localhost>
date:      Mon Apr 27 07:27:35 2020 +0000

description:
Skip pfil_run_hooks if no packet filter enabled in the kernel.

diffstat:

 sys/net/pfil.c |  9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)

diffs (30 lines):

diff -r 775d4cee37de -r 7a9a92ff2640 sys/net/pfil.c
--- a/sys/net/pfil.c    Sat Apr 25 14:40:11 2020 +0000
+++ b/sys/net/pfil.c    Mon Apr 27 07:27:35 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pfil.c,v 1.35.14.1 2020/04/08 14:08:57 martin Exp $    */
+/*     $NetBSD: pfil.c,v 1.35.14.2 2020/04/27 07:27:35 nat Exp $       */
 
 /*
  * Copyright (c) 2013 Mindaugas Rasiukevicius <rmind at NetBSD org>
@@ -28,7 +28,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pfil.c,v 1.35.14.1 2020/04/08 14:08:57 martin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pfil.c,v 1.35.14.2 2020/04/27 07:27:35 nat Exp $");
 
 #if defined(_KERNEL_OPT)
 #include "opt_net_mpsafe.h"
@@ -398,6 +398,11 @@
        int ret = 0;
 
        KASSERT(dir == PFIL_IN || dir == PFIL_OUT);
+       
+       if (__predict_false(ph == NULL)) {
+               return ret;
+       }
+
        if (__predict_false((phlistset = pfil_hook_get(dir, ph)) == NULL)) {
                return ret;
        }