[src/trunk]: src/sys/netipsec Simplify; omit unnecessary saidx passing

[ozaki-r <ozaki-r%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/d05aab58dcd8
branches:  trunk
changeset: 355099:d05aab58dcd8
user:      ozaki-r <ozaki-r%NetBSD.org@localhost>
date:      Thu Jul 13 01:22:44 2017 +0000

description:
Simplify; omit unnecessary saidx passing

- ipsec_nextisr returns a saidx but no caller uses it
- key_checkrequest is passed a saidx but it can be gotton by
  another argument (isr)

diffstat:

 sys/netipsec/ipsec_output.c |  16 +++++++---------
 sys/netipsec/key.c          |   8 ++++----
 sys/netipsec/key.h          |   4 ++--
 3 files changed, 13 insertions(+), 15 deletions(-)

diffs (139 lines):

diff -r 8c9d26f5170c -r d05aab58dcd8 sys/netipsec/ipsec_output.c
--- a/sys/netipsec/ipsec_output.c       Thu Jul 13 01:17:58 2017 +0000
+++ b/sys/netipsec/ipsec_output.c       Thu Jul 13 01:22:44 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ipsec_output.c,v 1.51 2017/07/12 07:00:40 ozaki-r Exp $        */
+/*     $NetBSD: ipsec_output.c,v 1.52 2017/07/13 01:22:44 ozaki-r Exp $        */
 
 /*-
  * Copyright (c) 2002, 2003 Sam Leffler, Errno Consulting
@@ -29,7 +29,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ipsec_output.c,v 1.51 2017/07/12 07:00:40 ozaki-r Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ipsec_output.c,v 1.52 2017/07/13 01:22:44 ozaki-r Exp $");
 
 /*
  * IPsec output processing.
@@ -293,7 +293,6 @@
        struct mbuf *m,
        struct ipsecrequest *isr,
        int af,
-       struct secasindex *saidx,
        int *error
 )
 {
@@ -313,6 +312,7 @@
 } while (/*CONSTCOND*/0)
 
        struct secasvar *sav;
+       struct secasindex *saidx;
 
        IPSEC_SPLASSERT_SOFTNET("ipsec_nextisr");
        KASSERTMSG(af == AF_INET || af == AF_INET6,
@@ -323,7 +323,7 @@
         * we only fillin unspecified SA peers for transport
         * mode; for tunnel mode they must already be filled in.
         */
-       *saidx = isr->saidx;
+       saidx = &isr->saidx;
        if (isr->saidx.mode == IPSEC_MODE_TRANSPORT) {
                /* Fillin unspecified SA peers only for transport mode */
                if (af == AF_INET) {
@@ -380,7 +380,7 @@
        /*
         * Lookup SA and validate it.
         */
-       *error = key_checkrequest(isr, saidx);
+       *error = key_checkrequest(isr);
        if (*error != 0) {
                /*
                 * IPsec processing is required, but no SA found.
@@ -442,7 +442,6 @@
 int
 ipsec4_process_packet(struct mbuf *m, struct ipsecrequest *isr)
 {
-       struct secasindex saidx;
        struct secasvar *sav;
        struct ip *ip;
        int s, error, i, off;
@@ -454,7 +453,7 @@
 
        s = splsoftnet();                       /* insure SA contents don't change */
 
-       isr = ipsec_nextisr(m, isr, AF_INET, &saidx, &error);
+       isr = ipsec_nextisr(m, isr, AF_INET, &error);
        if (isr == NULL) {
                if (error != 0) {
                        goto bad;
@@ -674,7 +673,6 @@
        struct ipsecrequest *isr
     )
 {
-       struct secasindex saidx;
        struct secasvar *sav;
        struct ip6_hdr *ip6;
        int s, error, i, off;
@@ -685,7 +683,7 @@
 
        s = splsoftnet();   /* insure SA contents don't change */
 
-       isr = ipsec_nextisr(m, isr, AF_INET6, &saidx, &error);
+       isr = ipsec_nextisr(m, isr, AF_INET6, &error);
        if (isr == NULL) {
                if (error != 0) {
                        /* XXX Should we send a notification ? */
diff -r 8c9d26f5170c -r d05aab58dcd8 sys/netipsec/key.c
--- a/sys/netipsec/key.c        Thu Jul 13 01:17:58 2017 +0000
+++ b/sys/netipsec/key.c        Thu Jul 13 01:22:44 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: key.c,v 1.180 2017/07/12 07:33:37 ozaki-r Exp $        */
+/*     $NetBSD: key.c,v 1.181 2017/07/13 01:22:44 ozaki-r Exp $        */
 /*     $FreeBSD: src/sys/netipsec/key.c,v 1.3.2.3 2004/02/14 22:23:23 bms Exp $        */
 /*     $KAME: key.c,v 1.191 2001/06/27 10:46:49 sakane Exp $   */
 
@@ -32,7 +32,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: key.c,v 1.180 2017/07/12 07:33:37 ozaki-r Exp $");
+__KERNEL_RCSID(0, "$NetBSD: key.c,v 1.181 2017/07/13 01:22:44 ozaki-r Exp $");
 
 /*
  * This code is referd to RFC 2367
@@ -838,14 +838,14 @@
  *     ENOENT: policy may be valid, but SA with REQUIRE is on acquiring.
  */
 int
-key_checkrequest(struct ipsecrequest *isr, const struct secasindex *saidx)
+key_checkrequest(struct ipsecrequest *isr)
 {
        u_int level;
        int error;
        struct secasvar *oldsav = NULL;
+       const struct secasindex *saidx = &isr->saidx;
 
        KASSERT(isr != NULL);
-       KASSERT(saidx != NULL);
        KASSERTMSG(saidx->mode == IPSEC_MODE_TRANSPORT ||
            saidx->mode == IPSEC_MODE_TUNNEL,
            "unexpected policy %u", saidx->mode);
diff -r 8c9d26f5170c -r d05aab58dcd8 sys/netipsec/key.h
--- a/sys/netipsec/key.h        Thu Jul 13 01:17:58 2017 +0000
+++ b/sys/netipsec/key.h        Thu Jul 13 01:22:44 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: key.h,v 1.20 2017/07/07 01:37:34 ozaki-r Exp $ */
+/*     $NetBSD: key.h,v 1.21 2017/07/13 01:22:44 ozaki-r Exp $ */
 /*     $FreeBSD: src/sys/netipsec/key.h,v 1.1.4.1 2003/01/24 05:11:36 sam Exp $        */
 /*     $KAME: key.h,v 1.21 2001/07/27 03:51:30 itojun Exp $    */
 
@@ -90,7 +90,7 @@
        key_freesav(psav, __func__, __LINE__)
 
 int key_checktunnelsanity (struct secasvar *, u_int, void *, void *);
-int key_checkrequest (struct ipsecrequest *isr, const struct secasindex *);
+int key_checkrequest(struct ipsecrequest *);
 
 struct secpolicy *key_msg2sp (const struct sadb_x_policy *, size_t, int *);
 struct mbuf *key_sp2msg (const struct secpolicy *);