Hi,

the diff below adds tdb_delete_locked() for use in pfkeyv2_sa_flush().
This way we won't have to worry about keeping the inline code and
tdb_delete() in sync.

ok?

Index: net/pfkeyv2.c
===================================================================
RCS file: /cvs/src/sys/net/pfkeyv2.c,v
retrieving revision 1.225
diff -u -p -r1.225 pfkeyv2.c
--- net/pfkeyv2.c       1 Dec 2021 22:34:31 -0000       1.225
+++ net/pfkeyv2.c       3 Dec 2021 17:19:57 -0000
@@ -1042,18 +1042,8 @@ int
 pfkeyv2_sa_flush(struct tdb *tdb, void *satype_vp, int last)
 {
        if (!(*((u_int8_t *) satype_vp)) ||
-           tdb->tdb_satype == *((u_int8_t *) satype_vp)) {
-               /* keep in sync with tdb_delete() */
-               NET_ASSERT_LOCKED();
-
-               if (tdb->tdb_flags & TDBF_DELETED)
-                       return (0);
-               tdb->tdb_flags |= TDBF_DELETED;
-               tdb_unlink_locked(tdb);
-               tdb_unbundle(tdb);
-               tdb_deltimeouts(tdb);
-               tdb_unref(tdb);
-       }
+           tdb->tdb_satype == *((u_int8_t *) satype_vp))
+               tdb_delete_locked(tdb);
        return (0);
 }
 
Index: netinet/ip_ipsp.c
===================================================================
RCS file: /cvs/src/sys/netinet/ip_ipsp.c,v
retrieving revision 1.260
diff -u -p -r1.260 ip_ipsp.c
--- netinet/ip_ipsp.c   2 Dec 2021 12:39:15 -0000       1.260
+++ netinet/ip_ipsp.c   3 Dec 2021 17:19:57 -0000
@@ -90,6 +90,7 @@ void          tdb_firstuse(void *);
 void           tdb_soft_timeout(void *);
 void           tdb_soft_firstuse(void *);
 int            tdb_hash(u_int32_t, union sockaddr_union *, u_int8_t);
+void           tdb_dodelete(struct tdb *, int locked);
 
 int ipsec_in_use = 0;
 u_int64_t ipsec_last_added = 0;
@@ -977,13 +978,29 @@ tdb_unref(struct tdb *tdb)
 void
 tdb_delete(struct tdb *tdbp)
 {
-       /* keep in sync with pfkeyv2_sa_flush() */
+       tdb_dodelete(tdbp, 0);
+}
+
+void
+tdb_delete_locked(struct tdb *tdbp)
+{
+       MUTEX_ASSERT_LOCKED(&tdb_sadb_mtx);
+       tdb_dodelete(tdbp, 1);
+}
+
+void
+tdb_dodelete(struct tdb *tdbp, int locked)
+{
        NET_ASSERT_LOCKED();
 
        if (tdbp->tdb_flags & TDBF_DELETED)
                return;
        tdbp->tdb_flags |= TDBF_DELETED;
-       tdb_unlink(tdbp);
+       if (locked)
+               tdb_unlink_locked(tdbp);
+       else
+               tdb_unlink(tdbp);
+
        /* release tdb_onext/tdb_inext references */
        tdb_unbundle(tdbp);
        /* delete timeouts and release references */
Index: netinet/ip_ipsp.h
===================================================================
RCS file: /cvs/src/sys/netinet/ip_ipsp.h,v
retrieving revision 1.226
diff -u -p -r1.226 ip_ipsp.h
--- netinet/ip_ipsp.h   1 Dec 2021 22:34:31 -0000       1.226
+++ netinet/ip_ipsp.h   3 Dec 2021 17:19:57 -0000
@@ -569,6 +569,7 @@ struct      tdb *gettdbbysrcdst_dir(u_int, u_
 void   puttdb(struct tdb *);
 void   puttdb_locked(struct tdb *);
 void   tdb_delete(struct tdb *);
+void   tdb_delete_locked(struct tdb *);
 struct tdb *tdb_alloc(u_int);
 struct tdb *tdb_ref(struct tdb *);
 void   tdb_unref(struct tdb *);

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