[src/trunk]: src/sys/net Fix net.*.rps_hash=toeplitz-othercpus on one CPU sys...

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

details:   https://anonhg.NetBSD.org/src/rev/5d3070b888a0
branches:  trunk
changeset: 1029076:5d3070b888a0
user:      knakahara <knakahara%NetBSD.org@localhost>
date:      Tue Dec 21 04:09:32 2021 +0000

description:
Fix net.*.rps_hash=toeplitz-othercpus on one CPU systems.

diffstat:

 sys/net/pktqueue.c |  7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diffs (28 lines):

diff -r 572a31a35b24 -r 5d3070b888a0 sys/net/pktqueue.c
--- a/sys/net/pktqueue.c        Mon Dec 20 23:05:55 2021 +0000
+++ b/sys/net/pktqueue.c        Tue Dec 21 04:09:32 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pktqueue.c,v 1.15 2021/12/15 07:47:22 knakahara Exp $  */
+/*     $NetBSD: pktqueue.c,v 1.16 2021/12/21 04:09:32 knakahara Exp $  */
 
 /*-
  * Copyright (c) 2014 The NetBSD Foundation, Inc.
@@ -36,7 +36,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pktqueue.c,v 1.15 2021/12/15 07:47:22 knakahara Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pktqueue.c,v 1.16 2021/12/21 04:09:32 knakahara Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_net_mpsafe.h"
@@ -284,6 +284,9 @@
 {
        uint32_t hash;
 
+       if (ncpu == 1)
+               return 0;
+
        hash = pktq_rps_hash_toeplitz(m);
        hash %= ncpu - 1;
        if (hash >= cpu_index(curcpu()))