[src/trunk]: src/sys/netipsec Use inpcb_hdr to reduce the diff between:

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

details:   https://anonhg.NetBSD.org/src/rev/4f8e928100c2
branches:  trunk
changeset: 359693:4f8e928100c2
user:      maxv <maxv%NetBSD.org@localhost>
date:      Wed Feb 21 16:38:15 2018 +0000

description:
Use inpcb_hdr to reduce the diff between:

        ipsec4_hdrsiz      and ipsec6_hdrsiz
        ipsec4_in_reject   and ipsec6_in_reject
        ipsec4_checkpolicy and ipsec4_checkpolicy

The members of these couples are now identical, and could be merged,
giving only three functions instead of six...

diffstat:

 sys/netipsec/ipsec.c |  45 +++++++++++++++++++++++++--------------------
 1 files changed, 25 insertions(+), 20 deletions(-)

diffs (151 lines):

diff -r eaf15394b91b -r 4f8e928100c2 sys/netipsec/ipsec.c
--- a/sys/netipsec/ipsec.c      Wed Feb 21 16:18:52 2018 +0000
+++ b/sys/netipsec/ipsec.c      Wed Feb 21 16:38:15 2018 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: ipsec.c,v 1.132 2018/02/21 16:18:52 maxv Exp $ */
+/* $NetBSD: ipsec.c,v 1.133 2018/02/21 16:38:15 maxv Exp $ */
 /* $FreeBSD: src/sys/netipsec/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 1.132 2018/02/21 16:18:52 maxv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ipsec.c,v 1.133 2018/02/21 16:38:15 maxv Exp $");
 
 /*
  * IPsec controller part.
@@ -584,8 +584,9 @@
        if (inp == NULL) {
                sp = ipsec_getpolicybyaddr(m, dir, flag, error);
        } else {
-               KASSERT(inp->inp_socket != NULL);
-               sp = ipsec_getpolicybysock(m, dir, (struct inpcb_hdr *)inp, error);
+               struct inpcb_hdr *inph = (struct inpcb_hdr *)inp;
+               KASSERT(inph->inph_socket != NULL);
+               sp = ipsec_getpolicybysock(m, dir, inph, error);
        }
        if (sp == NULL) {
                KASSERTMSG(*error != 0, "getpolicy failed w/o error");
@@ -813,8 +814,9 @@
        if (in6p == NULL) {
                sp = ipsec_getpolicybyaddr(m, dir, flag, error);
        } else {
-               KASSERT(in6p->in6p_socket != NULL);
-               sp = ipsec_getpolicybysock(m, dir, (struct inpcb_hdr *)in6p, error);
+               struct inpcb_hdr *inph = (struct inpcb_hdr *)in6p;
+               KASSERT(inph->inph_socket != NULL);
+               sp = ipsec_getpolicybysock(m, dir, inph, error);
        }
        if (sp == NULL) {
                KASSERTMSG(*error != 0, "getpolicy failed w/o error");
@@ -834,7 +836,7 @@
        case IPSEC_POLICY_BYPASS:
        case IPSEC_POLICY_NONE:
                KEY_SP_UNREF(&sp);
-               sp = NULL;        /* NB: force NULL result */
+               sp = NULL;              /* NB: force NULL result */
                break;
        case IPSEC_POLICY_IPSEC:
                KASSERT(sp->req != NULL);
@@ -1753,18 +1755,19 @@
 int
 ipsec4_in_reject(struct mbuf *m, struct inpcb *inp)
 {
+       struct inpcb_hdr *inph = (struct inpcb_hdr *)inp;
        struct secpolicy *sp;
        int error;
        int result;
 
        KASSERT(m != NULL);
 
-       if (inp == NULL)
+       if (inph == NULL)
                sp = ipsec_getpolicybyaddr(m, IPSEC_DIR_INBOUND,
                    IP_FORWARDING, &error);
        else
                sp = ipsec_getpolicybysock(m, IPSEC_DIR_INBOUND,
-                   (struct inpcb_hdr *)inp, &error);
+                   inph, &error);
 
        if (sp != NULL) {
                result = ipsec_sp_reject(sp, m);
@@ -1786,18 +1789,19 @@
 int
 ipsec6_in_reject(struct mbuf *m, struct in6pcb *in6p)
 {
+       struct inpcb_hdr *inph = (struct inpcb_hdr *)in6p;
        struct secpolicy *sp;
        int error;
        int result;
 
        KASSERT(m != NULL);
 
-       if (in6p == NULL)
+       if (inph == NULL)
                sp = ipsec_getpolicybyaddr(m, IPSEC_DIR_INBOUND,
                    IP_FORWARDING, &error);
        else
                sp = ipsec_getpolicybysock(m, IPSEC_DIR_INBOUND,
-                   (struct inpcb_hdr *)in6p, &error);
+                   inph, &error);
 
        if (sp != NULL) {
                result = ipsec_sp_reject(sp, m);
@@ -1890,25 +1894,26 @@
 size_t
 ipsec4_hdrsiz(struct mbuf *m, u_int dir, struct inpcb *inp)
 {
+       struct inpcb_hdr *inph = (struct inpcb_hdr *)inp;
        struct secpolicy *sp;
        int error;
        size_t size;
 
        KASSERT(m != NULL);
-       KASSERTMSG(inp == NULL || inp->inp_socket != NULL, "socket w/o inpcb");
+       KASSERTMSG(inph == NULL || inph->inph_socket != NULL,
+           "socket w/o inpcb");
 
-       if (inp == NULL)
+       if (inph == NULL)
                sp = ipsec_getpolicybyaddr(m, dir, IP_FORWARDING, &error);
        else
-               sp = ipsec_getpolicybysock(m, dir,
-                   (struct inpcb_hdr *)inp, &error);
+               sp = ipsec_getpolicybysock(m, dir, inph, &error);
 
        if (sp != NULL) {
                size = ipsec_sp_hdrsiz(sp, m);
                KEYDEBUG_PRINTF(KEYDEBUG_IPSEC_DATA, "size:%zu.\n", size);
                KEY_SP_UNREF(&sp);
        } else {
-               size = 0;       /* XXX should be panic ? */
+               size = 0;
        }
 
        return size;
@@ -1918,19 +1923,19 @@
 size_t
 ipsec6_hdrsiz(struct mbuf *m, u_int dir, struct in6pcb *in6p)
 {
+       struct inpcb_hdr *inph = (struct inpcb_hdr *)in6p;
        struct secpolicy *sp;
        int error;
        size_t size;
 
        KASSERT(m != NULL);
-       KASSERTMSG(in6p == NULL || in6p->in6p_socket != NULL,
+       KASSERTMSG(inph == NULL || inph->inph_socket != NULL,
            "socket w/o inpcb");
 
-       if (in6p == NULL)
+       if (inph == NULL)
                sp = ipsec_getpolicybyaddr(m, dir, IP_FORWARDING, &error);
        else
-               sp = ipsec_getpolicybysock(m, dir,
-                   (struct inpcb_hdr *)in6p, &error);
+               sp = ipsec_getpolicybysock(m, dir, inph, &error);
 
        if (sp != NULL) {
                size = ipsec_sp_hdrsiz(sp, m);