[src/trunk]: src/sys Merge ipsec4_input and ipsec6_input into ipsec_ip_input....

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

details:   https://anonhg.NetBSD.org/src/rev/9b7affeec7ac
branches:  trunk
changeset: 832495:9b7affeec7ac
user:      maxv <maxv%NetBSD.org@localhost>
date:      Mon May 14 17:34:26 2018 +0000

description:
Merge ipsec4_input and ipsec6_input into ipsec_ip_input. Make the argument
a bool for clarity. Optimize the function: if M_CANFASTFWD is not there
(because already removed by the firewall) leave now.

Makes it easier to see that M_CANFASTFWD is not removed on IPv6.

diffstat:

 sys/netinet/ip_input.c              |   8 ++++----
 sys/netinet6/ip6_input.c            |   6 +++---
 sys/netipsec/ipsec.c                |  28 +++++++---------------------
 sys/netipsec/ipsec.h                |   4 ++--
 sys/netipsec/ipsec6.h               |   3 +--
 sys/rump/librump/rumpnet/net_stub.c |   7 +++----
 6 files changed, 20 insertions(+), 36 deletions(-)

diffs (206 lines):

diff -r 2b78882cc051 -r 9b7affeec7ac sys/netinet/ip_input.c
--- a/sys/netinet/ip_input.c    Mon May 14 17:26:16 2018 +0000
+++ b/sys/netinet/ip_input.c    Mon May 14 17:34:26 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ip_input.c,v 1.382 2018/05/10 05:08:53 maxv Exp $      */
+/*     $NetBSD: ip_input.c,v 1.383 2018/05/14 17:34:26 maxv Exp $      */
 
 /*
  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
@@ -91,7 +91,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ip_input.c,v 1.382 2018/05/10 05:08:53 maxv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ip_input.c,v 1.383 2018/05/14 17:34:26 maxv Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_inet.h"
@@ -729,7 +729,7 @@
 #ifdef IPSEC
                /* Check the security policy (SP) for the packet */
                if (ipsec_used) {
-                       if (ipsec4_input(m, IP_FORWARDING) != 0) {
+                       if (ipsec_ip_input(m, true) != 0) {
                                goto out;
                        }
                }
@@ -776,7 +776,7 @@
         */
        if (ipsec_used &&
            (inetsw[ip_protox[ip->ip_p]].pr_flags & PR_LASTHDR) != 0) {
-               if (ipsec4_input(m, 0) != 0) {
+               if (ipsec_ip_input(m, false) != 0) {
                        goto out;
                }
        }
diff -r 2b78882cc051 -r 9b7affeec7ac sys/netinet6/ip6_input.c
--- a/sys/netinet6/ip6_input.c  Mon May 14 17:26:16 2018 +0000
+++ b/sys/netinet6/ip6_input.c  Mon May 14 17:34:26 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ip6_input.c,v 1.201 2018/05/01 07:21:39 maxv Exp $     */
+/*     $NetBSD: ip6_input.c,v 1.202 2018/05/14 17:34:26 maxv Exp $     */
 /*     $KAME: ip6_input.c,v 1.188 2001/03/29 05:34:31 itojun Exp $     */
 
 /*
@@ -62,7 +62,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ip6_input.c,v 1.201 2018/05/01 07:21:39 maxv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ip6_input.c,v 1.202 2018/05/14 17:34:26 maxv Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_gateway.h"
@@ -742,7 +742,7 @@
                            & PR_LASTHDR) != 0) {
                                int error;
 
-                               error = ipsec6_input(m);
+                               error = ipsec_ip_input(m, false);
                                if (error)
                                        goto bad;
                        }
diff -r 2b78882cc051 -r 9b7affeec7ac sys/netipsec/ipsec.c
--- a/sys/netipsec/ipsec.c      Mon May 14 17:26:16 2018 +0000
+++ b/sys/netipsec/ipsec.c      Mon May 14 17:34:26 2018 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: ipsec.c,v 1.163 2018/05/10 05:15:14 maxv Exp $ */
+/* $NetBSD: ipsec.c,v 1.164 2018/05/14 17:34:26 maxv Exp $ */
 /* $FreeBSD: ipsec.c,v 1.2.2.2 2003/07/01 01:38:13 sam Exp $ */
 /* $KAME: ipsec.c,v 1.103 2001/05/24 07:14:18 sakane Exp $ */
 
@@ -32,7 +32,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ipsec.c,v 1.163 2018/05/10 05:15:14 maxv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ipsec.c,v 1.164 2018/05/14 17:34:26 maxv Exp $");
 
 /*
  * IPsec controller part.
@@ -697,7 +697,7 @@
 }
 
 int
-ipsec4_input(struct mbuf *m, int flags)
+ipsec_ip_input(struct mbuf *m, bool forward)
 {
        struct secpolicy *sp;
        int error, s;
@@ -709,8 +709,7 @@
                return EINVAL;
        }
 
-       if (flags == 0) {
-               /* We are done. */
+       if (!forward || !(m->m_flags & M_CANFASTFWD)) {
                return 0;
        }
 
@@ -719,12 +718,14 @@
         * it is a Fast Forward candidate.
         */
        s = splsoftnet();
-       sp = ipsec_checkpolicy(m, IPSEC_DIR_OUTBOUND, flags, &error, NULL);
+       sp = ipsec_checkpolicy(m, IPSEC_DIR_OUTBOUND, IP_FORWARDING,
+           &error, NULL);
        if (sp != NULL) {
                m->m_flags &= ~M_CANFASTFWD;
                KEY_SP_UNREF(&sp);
        }
        splx(s);
+
        return 0;
 }
 
@@ -1828,21 +1829,6 @@
        *needipsecp = needipsec;
        return sp;
 }
-
-int
-ipsec6_input(struct mbuf *m)
-{
-       int s, error;
-
-       s = splsoftnet();
-       error = ipsec_in_reject(m, NULL);
-       splx(s);
-       if (error) {
-               return EINVAL;
-       }
-
-       return 0;
-}
 #endif /* INET6 */
 
 /*
diff -r 2b78882cc051 -r 9b7affeec7ac sys/netipsec/ipsec.h
--- a/sys/netipsec/ipsec.h      Mon May 14 17:26:16 2018 +0000
+++ b/sys/netipsec/ipsec.h      Mon May 14 17:34:26 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ipsec.h,v 1.81 2018/05/10 05:08:53 maxv Exp $  */
+/*     $NetBSD: ipsec.h,v 1.82 2018/05/14 17:34:26 maxv Exp $  */
 /*     $FreeBSD: ipsec.h,v 1.2.4.2 2004/02/14 22:23:23 bms Exp $       */
 /*     $KAME: ipsec.h,v 1.53 2001/11/20 08:32:38 itojun Exp $  */
 
@@ -256,8 +256,8 @@
 
 struct inpcb;
 int ipsec4_output(struct mbuf *, struct inpcb *, int, u_long *, bool *, bool *);
-int ipsec4_input(struct mbuf *, int);
 
+int ipsec_ip_input(struct mbuf *, bool);
 void ipsec_mtu(struct mbuf *, int *);
 
 struct inpcb;
diff -r 2b78882cc051 -r 9b7affeec7ac sys/netipsec/ipsec6.h
--- a/sys/netipsec/ipsec6.h     Mon May 14 17:26:16 2018 +0000
+++ b/sys/netipsec/ipsec6.h     Mon May 14 17:34:26 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ipsec6.h,v 1.28 2018/04/28 14:25:56 maxv Exp $ */
+/*     $NetBSD: ipsec6.h,v 1.29 2018/05/14 17:34:26 maxv Exp $ */
 /*     $FreeBSD: ipsec6.h,v 1.1.4.1 2003/01/24 05:11:35 sam Exp $      */
 /*     $KAME: ipsec.h,v 1.44 2001/03/23 08:08:47 itojun Exp $  */
 
@@ -60,7 +60,6 @@
 int ipsec6_common_input(struct mbuf **, int *, int);
 int ipsec6_common_input_cb(struct mbuf *, struct secasvar *, int, int);
 int ipsec6_process_packet(struct mbuf *, const struct ipsecrequest *);
-int ipsec6_input(struct mbuf *);
 #endif /*_KERNEL*/
 
 #endif /* !_NETIPSEC_IPSEC6_H_ */
diff -r 2b78882cc051 -r 9b7affeec7ac sys/rump/librump/rumpnet/net_stub.c
--- a/sys/rump/librump/rumpnet/net_stub.c       Mon May 14 17:26:16 2018 +0000
+++ b/sys/rump/librump/rumpnet/net_stub.c       Mon May 14 17:34:26 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: net_stub.c,v 1.35 2018/05/10 05:08:53 maxv Exp $       */
+/*     $NetBSD: net_stub.c,v 1.36 2018/05/14 17:34:26 maxv Exp $       */
 
 /*
  * Copyright (c) 2008 Antti Kantee.  All Rights Reserved.
@@ -26,7 +26,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: net_stub.c,v 1.35 2018/05/10 05:08:53 maxv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: net_stub.c,v 1.36 2018/05/14 17:34:26 maxv Exp $");
 
 #include <sys/mutex.h>
 #include <sys/param.h>
@@ -97,12 +97,11 @@
 __weak_alias(esp6_ctlinput,rumpnet_stub);
 __weak_alias(ipsec4_output,rumpnet_stub);
 __weak_alias(ipsec4_common_input,rumpnet_stub);
-__weak_alias(ipsec4_input,rumpnet_stub);
 __weak_alias(ipsec6_common_input,rumpnet_stub);
-__weak_alias(ipsec6_input,rumpnet_stub);
 __weak_alias(ipsec6_check_policy,rumpnet_stub);
 __weak_alias(ipsec6_process_packet,rumpnet_stub);
 __weak_alias(ipsec_mtu,rumpnet_stub);
+__weak_alias(ipsec_ip_input,rumpnet_stub);
 __weak_alias(ipsec_set_policy,rumpnet_stub);
 __weak_alias(ipsec_get_policy,rumpnet_stub);
 __weak_alias(ipsec_delete_pcbpolicy,rumpnet_stub);