[src/trunk]: src/sys/netipsec Separate sending message routine (NFC)

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

details:   https://anonhg.NetBSD.org/src/rev/430a38fca0c1
branches:  trunk
changeset: 825356:430a38fca0c1
user:      ozaki-r <ozaki-r%NetBSD.org@localhost>
date:      Tue Jul 11 10:06:07 2017 +0000

description:
Separate sending message routine (NFC)

diffstat:

 sys/netipsec/key.c |  116 ++++++++++++++++++++++++++--------------------------
 1 files changed, 57 insertions(+), 59 deletions(-)

diffs (146 lines):

diff -r a75e1a93e630 -r 430a38fca0c1 sys/netipsec/key.c
--- a/sys/netipsec/key.c        Tue Jul 11 09:49:15 2017 +0000
+++ b/sys/netipsec/key.c        Tue Jul 11 10:06:07 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: key.c,v 1.175 2017/07/11 09:49:15 ozaki-r Exp $        */
+/*     $NetBSD: key.c,v 1.176 2017/07/11 10:06:07 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 1.175 2017/07/11 09:49:15 ozaki-r Exp $");
+__KERNEL_RCSID(0, "$NetBSD: key.c,v 1.176 2017/07/11 10:06:07 ozaki-r Exp $");
 
 /*
  * This code is referd to RFC 2367
@@ -972,6 +972,60 @@
        return NULL;
 }
 
+static void
+key_sendup_message_delete(struct secasvar *sav)
+{
+       struct mbuf *m, *result = 0;
+       uint8_t satype;
+
+       satype = key_proto2satype(sav->sah->saidx.proto);
+       if (satype == 0)
+               goto msgfail;
+
+       m = key_setsadbmsg(SADB_DELETE, 0, satype, 0, 0, sav->refcnt - 1);
+       if (m == NULL)
+               goto msgfail;
+       result = m;
+
+       /* set sadb_address for saidx's. */
+       m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC, &sav->sah->saidx.src.sa,
+           sav->sah->saidx.src.sa.sa_len << 3, IPSEC_ULPROTO_ANY);
+       if (m == NULL)
+               goto msgfail;
+       m_cat(result, m);
+
+       /* set sadb_address for saidx's. */
+       m = key_setsadbaddr(SADB_EXT_ADDRESS_DST, &sav->sah->saidx.src.sa,
+           sav->sah->saidx.src.sa.sa_len << 3, IPSEC_ULPROTO_ANY);
+       if (m == NULL)
+               goto msgfail;
+       m_cat(result, m);
+
+       /* create SA extension */
+       m = key_setsadbsa(sav);
+       if (m == NULL)
+               goto msgfail;
+       m_cat(result, m);
+
+       if (result->m_len < sizeof(struct sadb_msg)) {
+               result = m_pullup(result, sizeof(struct sadb_msg));
+               if (result == NULL)
+                       goto msgfail;
+       }
+
+       result->m_pkthdr.len = 0;
+       for (m = result; m; m = m->m_next)
+               result->m_pkthdr.len += m->m_len;
+       mtod(result, struct sadb_msg *)->sadb_msg_len =
+           PFKEY_UNIT64(result->m_pkthdr.len);
+
+       key_sendup_mbuf(NULL, result, KEY_SENDUP_REGISTERED);
+       result = NULL;
+msgfail:
+       if (result)
+               m_freem(result);
+}
+
 /*
  * searching SAD with direction, protocol, mode and state.
  * called by key_allocsa_policy().
@@ -1027,65 +1081,9 @@
                 * permanent.
                 */
                if (d->lft_c->sadb_lifetime_addtime != 0) {
-                       struct mbuf *m, *result = 0;
-                       uint8_t satype;
-
                        key_sa_chgstate(d, SADB_SASTATE_DEAD);
-
                        KASSERT(d->refcnt > 0);
-
-                       satype = key_proto2satype(d->sah->saidx.proto);
-                       if (satype == 0)
-                               goto msgfail;
-
-                       m = key_setsadbmsg(SADB_DELETE, 0,
-                           satype, 0, 0, d->refcnt - 1);
-                       if (!m)
-                               goto msgfail;
-                       result = m;
-
-                       /* set sadb_address for saidx's. */
-                       m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
-                           &d->sah->saidx.src.sa,
-                           d->sah->saidx.src.sa.sa_len << 3,
-                           IPSEC_ULPROTO_ANY);
-                       if (!m)
-                               goto msgfail;
-                       m_cat(result, m);
-
-                       /* set sadb_address for saidx's. */
-                       m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
-                           &d->sah->saidx.src.sa,
-                           d->sah->saidx.src.sa.sa_len << 3,
-                           IPSEC_ULPROTO_ANY);
-                       if (!m)
-                               goto msgfail;
-                       m_cat(result, m);
-
-                       /* create SA extension */
-                       m = key_setsadbsa(d);
-                       if (!m)
-                               goto msgfail;
-                       m_cat(result, m);
-
-                       if (result->m_len < sizeof(struct sadb_msg)) {
-                               result = m_pullup(result,
-                                   sizeof(struct sadb_msg));
-                               if (result == NULL)
-                                       goto msgfail;
-                       }
-
-                       result->m_pkthdr.len = 0;
-                       for (m = result; m; m = m->m_next)
-                               result->m_pkthdr.len += m->m_len;
-                       mtod(result, struct sadb_msg *)->sadb_msg_len =
-                           PFKEY_UNIT64(result->m_pkthdr.len);
-
-                       key_sendup_mbuf(NULL, result, KEY_SENDUP_REGISTERED);
-                       result = 0;
-                msgfail:
-                       if (result)
-                               m_freem(result);
+                       key_sendup_message_delete(d);
                        KEY_FREESAV(&d);
                }
        }