Move files to match FreeBSD layout

1 files changed, 292 insertions, 0 deletions

diff --git a/freebsd/sys/netinet/libalias/alias_mod.c b/freebsd/sys/netinet/libalias/alias_mod.c
new file mode 100644
index 00000000..fa15b2e4
--- /dev/null
+++ b/freebsd/sys/netinet/libalias/alias_mod.c
@@ -0,0 +1,292 @@
+#include <freebsd/machine/rtems-bsd-config.h>
+
+/*-
+ * Copyright (c) 2005 Paolo Pisati <piso@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+#include <freebsd/sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#ifdef _KERNEL
+#include <freebsd/sys/libkern.h>
+#include <freebsd/sys/param.h>
+#include <freebsd/sys/lock.h>
+#include <freebsd/sys/rwlock.h>
+#else
+#include <freebsd/stdio.h>
+#include <freebsd/string.h>
+#include <freebsd/sys/types.h>
+#include <freebsd/errno.h>
+#endif
+
+#include <freebsd/netinet/in_systm.h>
+#include <freebsd/netinet/in.h>
+#include <freebsd/netinet/ip.h>
+
+#ifdef _KERNEL
+#include <freebsd/netinet/libalias/alias_local.h>
+#include <freebsd/netinet/libalias/alias_mod.h>
+#else
+#include <freebsd/local/alias_local.h>
+#include <freebsd/local/alias_mod.h>
+#endif
+
+/* Protocol and userland module handlers chains. */
+LIST_HEAD(handler_chain, proto_handler) handler_chain = LIST_HEAD_INITIALIZER(handler_chain);
+#ifdef _KERNEL
+struct rwlock   handler_rw;
+#endif
+SLIST_HEAD(dll_chain, dll) dll_chain = SLIST_HEAD_INITIALIZER(dll_chain); 
+
+#ifdef _KERNEL
+
+#define	LIBALIAS_RWLOCK_INIT() \
+        rw_init(&handler_rw, "Libalias_modules_rwlock")
+#define	LIBALIAS_RWLOCK_DESTROY()	rw_destroy(&handler_rw)
+#define	LIBALIAS_WLOCK_ASSERT() \
+        rw_assert(&handler_rw, RA_WLOCKED)
+
+static __inline void
+LIBALIAS_RLOCK(void)
+{
+	rw_rlock(&handler_rw);
+}
+
+static __inline void
+LIBALIAS_RUNLOCK(void)
+{
+	rw_runlock(&handler_rw);
+}
+
+static __inline void
+LIBALIAS_WLOCK(void)
+{
+	rw_wlock(&handler_rw);
+}
+
+static __inline void
+LIBALIAS_WUNLOCK(void)
+{
+	rw_wunlock(&handler_rw);
+}
+
+static void
+_handler_chain_init(void)
+{
+
+	if (!rw_initialized(&handler_rw))
+		LIBALIAS_RWLOCK_INIT();
+}
+
+static void
+_handler_chain_destroy(void)
+{
+
+	if (rw_initialized(&handler_rw))
+		LIBALIAS_RWLOCK_DESTROY();
+}
+
+#else
+#define	LIBALIAS_RWLOCK_INIT() ;
+#define	LIBALIAS_RWLOCK_DESTROY()	;
+#define	LIBALIAS_WLOCK_ASSERT()	;
+#define	LIBALIAS_RLOCK() ;
+#define	LIBALIAS_RUNLOCK() ;
+#define	LIBALIAS_WLOCK() ;
+#define	LIBALIAS_WUNLOCK() ;
+#define _handler_chain_init() ;
+#define _handler_chain_destroy() ;
+#endif 
+
+void
+handler_chain_init(void)
+{
+	_handler_chain_init();
+}
+
+void
+handler_chain_destroy(void)
+{
+	_handler_chain_destroy();
+}
+
+static int
+_attach_handler(struct proto_handler *p)
+{
+	struct proto_handler *b;
+
+	LIBALIAS_WLOCK_ASSERT();
+	b = NULL;
+	LIST_FOREACH(b, &handler_chain, entries) {
+		if ((b->pri == p->pri) && 
+		    (b->dir == p->dir) &&
+		    (b->proto == p->proto))
+			return (EEXIST); /* Priority conflict. */
+		if (b->pri > p->pri) {
+			LIST_INSERT_BEFORE(b, p, entries);
+			return (0);
+		}
+	}
+	/* End of list or found right position, inserts here. */
+	if (b)
+		LIST_INSERT_AFTER(b, p, entries);
+	else
+		LIST_INSERT_HEAD(&handler_chain, p, entries);
+	return (0);
+}
+
+static int
+_detach_handler(struct proto_handler *p)
+{
+	struct proto_handler *b, *b_tmp;
+
+	LIBALIAS_WLOCK_ASSERT();	
+	LIST_FOREACH_SAFE(b, &handler_chain, entries, b_tmp) {
+		if (b == p) {
+			LIST_REMOVE(b, entries);
+			return (0);
+		}
+	}
+	return (ENOENT); /* Handler not found. */
+}
+
+int
+LibAliasAttachHandlers(struct proto_handler *_p)
+{
+	int i, error;
+
+	LIBALIAS_WLOCK();
+	error = -1;
+	for (i = 0; 1; i++) {
+		if (*((int *)&_p[i]) == EOH) 
+			break;
+		error = _attach_handler(&_p[i]);
+		if (error != 0) 
+			break;
+	}
+	LIBALIAS_WUNLOCK();
+	return (error);
+}
+
+int
+LibAliasDetachHandlers(struct proto_handler *_p)
+{
+	int i, error;
+
+	LIBALIAS_WLOCK();
+	error = -1;
+	for (i = 0; 1; i++) {
+		if (*((int *)&_p[i]) == EOH) 
+			break;
+		error = _detach_handler(&_p[i]);
+		if (error != 0) 
+			break;
+	}
+	LIBALIAS_WUNLOCK();
+	return (error);
+}
+
+int
+detach_handler(struct proto_handler *_p)
+{
+	int error;
+
+	LIBALIAS_WLOCK();
+	error = -1;
+	error = _detach_handler(_p);
+	LIBALIAS_WUNLOCK();
+	return (error);
+}
+
+int
+find_handler(int8_t dir, int8_t proto, struct libalias *la, __unused struct ip *pip, 
+    struct alias_data *ad)
+{
+	struct proto_handler *p;
+	int error;
+
+	LIBALIAS_RLOCK();
+	error = ENOENT;
+	LIST_FOREACH(p, &handler_chain, entries) {
+		if ((p->dir & dir) && (p->proto & proto))
+			if (p->fingerprint(la, ad) == 0) {
+				error = p->protohandler(la, pip, ad);
+				break;
+			}
+	}
+	LIBALIAS_RUNLOCK();
+	return (error);	
+}
+
+struct proto_handler *
+first_handler(void)
+{
+	
+	return (LIST_FIRST(&handler_chain));	
+}
+
+/* Dll manipulation code - this code is not thread safe... */
+
+int
+attach_dll(struct dll *p)
+{
+	struct dll *b;
+
+	SLIST_FOREACH(b, &dll_chain, next) {
+		if (!strncmp(b->name, p->name, DLL_LEN))
+			return (EEXIST); /* Dll name conflict. */
+	}
+	SLIST_INSERT_HEAD(&dll_chain, p, next);
+	return (0);
+}
+
+void *
+detach_dll(char *p)
+{
+	struct dll *b, *b_tmp;
+	void *error;
+
+	b = NULL;
+	error = NULL;
+	SLIST_FOREACH_SAFE(b, &dll_chain, next, b_tmp)
+		if (!strncmp(b->name, p, DLL_LEN)) {
+			SLIST_REMOVE(&dll_chain, b, dll, next); 
+			error = b;
+			break;
+		}
+	return (error);
+}
+
+struct dll *
+walk_dll_chain(void)
+{
+	struct dll *t;
+
+	t = SLIST_FIRST(&dll_chain);
+	if (t == NULL)
+		return (NULL);
+	SLIST_REMOVE_HEAD(&dll_chain, next);
+	return (t);
+}