[src/trunk]: src/sys/net Fix overflow case detected by clang. Pointed out by...

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

details:   https://anonhg.NetBSD.org/src/rev/8cf49316530d
branches:  trunk
changeset: 371756:8cf49316530d
user:      knakahara <knakahara%NetBSD.org@localhost>
date:      Thu Oct 06 06:59:24 2022 +0000

description:
Fix overflow case detected by clang.  Pointed out by wsh@IIJ, thanks.

diffstat:

 sys/net/if_ipsec.c |  8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diffs (33 lines):

diff -r 3f2b2f0d57d0 -r 8cf49316530d sys/net/if_ipsec.c
--- a/sys/net/if_ipsec.c        Thu Oct 06 06:51:36 2022 +0000
+++ b/sys/net/if_ipsec.c        Thu Oct 06 06:59:24 2022 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_ipsec.c,v 1.32 2022/09/30 07:36:36 knakahara Exp $  */
+/*     $NetBSD: if_ipsec.c,v 1.33 2022/10/06 06:59:24 knakahara Exp $  */
 
 /*
  * Copyright (c) 2017 Internet Initiative Japan Inc.
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_ipsec.c,v 1.32 2022/09/30 07:36:36 knakahara Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_ipsec.c,v 1.33 2022/10/06 06:59:24 knakahara Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_inet.h"
@@ -1798,12 +1798,12 @@
 
        mutex_enter(&ipsec_softcs.lock);
        if (ipsec_softcs.use_fixed_reqid) {
-               u_int16_t reqid_base;
+               uint32_t reqid_base;
 
                reqid_base = ipsec_softcs.reqid_base + ifp->if_index * 2;
                if (reqid_base + 1 > ipsec_softcs.reqid_last) {
                        log(LOG_ERR,
-                           "%s: invalid fixed reqid(%"PRIu16"), "
+                           "%s: invalid fixed reqid(%"PRIu32"), "
                            "current range %"PRIu16" <= reqid <= %"PRIu16"\n",
                            ifp->if_xname, reqid_base + 1,
                            ipsec_softcs.reqid_base, ipsec_softcs.reqid_last);