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Force the last loop to always walk all the data in the mbuf chain.

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It appears that randomness was against me when I updated the arm version
as it crashes when used for real.  By forcing one full walk of the mbuf
chain the regression tool crashes, hinting that something is wrong.
This commit is contained in:
chris 2008-01-27 16:49:13 +00:00
parent 29ef53c683
commit e083edeb16
1 changed files with 9 additions and 3 deletions
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12
regress/sys/net/in_cksum/in_cksum.c
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@ -1,4 +1,4 @@
/* $NetBSD: in_cksum.c,v 1.1 2008/01/24 18:12:29 joerg Exp $ */ /* $NetBSD: in_cksum.c,v 1.2 2008/01/27 16:49:13 chris Exp $ */
/*- /*-
* Copyright (c) 2008 Joerg Sonnenberger <joerg@NetBSD.org>. * Copyright (c) 2008 Joerg Sonnenberger <joerg@NetBSD.org>.
* All rights reserved. * All rights reserved.
@ -29,7 +29,7 @@
*/ */
#include <sys/cdefs.h> #include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: in_cksum.c,v 1.1 2008/01/24 18:12:29 joerg Exp $"); __KERNEL_RCSID(0, "$NetBSD: in_cksum.c,v 1.2 2008/01/27 16:49:13 chris Exp $");
#include <sys/param.h> #include <sys/param.h>
#include <sys/mbuf.h> #include <sys/mbuf.h>
@ -133,7 +133,13 @@ main(int argc, char **argv)
randomise_mbuf_chain(m); randomise_mbuf_chain(m);
init_sum = rand(); init_sum = rand();
len = mbuf_len(m); len = mbuf_len(m);
off = len ? rand() % len : 0;
/* force one loop over all data */
if (loops == 1)
off = 0;
else
off = len ? rand() % len : 0;
len -= off; len -= off;
old_sum = portable_cpu_in_cksum(m, len, off, init_sum); old_sum = portable_cpu_in_cksum(m, len, off, init_sum);
new_sum = cpu_in_cksum(m, len, off, init_sum); new_sum = cpu_in_cksum(m, len, off, init_sum);