Virgin import of the NgATM SAAL layer shared kernel/user part v0.9.

1 files changed, 90 insertions, 0 deletions

diff --git a/sys/contrib/ngatm/netnatm/unimsg.h b/sys/contrib/ngatm/netnatm/unimsg.h
new file mode 100644
index 0000000..d5b390c
--- /dev/null
+++ b/sys/contrib/ngatm/netnatm/unimsg.h
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 1996-2003
+ *	Fraunhofer Institute for Open Communication Systems (FhG Fokus).
+ * 	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.
+ *
+ * Author: Hartmut Brandt <harti@freebsd.org>
+ *
+ * $Begemot: libunimsg/atm/unimsg.h,v 1.3 2003/09/19 11:52:40 hbb Exp $
+ *
+ * This defines the structure of messages as handled by this library.
+ */
+#ifndef _NETNATM_UNIMSG_H_
+#define _NETNATM_UNIMSG_H_
+
+#include <sys/types.h>
+#ifdef _KERNEL
+#ifdef __FreeBSD__
+#include <sys/systm.h>
+#endif
+#else
+#include <string.h>
+#endif
+
+struct uni_msg {
+	u_char		*b_wptr;	/* tail pointer */
+	u_char		*b_rptr;	/* head pointer */
+	u_char		*b_buf;		/* data buffer */
+	u_char		*b_lim;		/* end of data buffer */
+};
+
+/* return the current length of the message */
+#define uni_msg_len(M)		((size_t)((M)->b_wptr - (M)->b_rptr))
+
+/* return the number of space behind the message */
+#define uni_msg_space(M)	((size_t)((M)->b_lim - (M)->b_wptr))
+
+/* return the amount of leading free space */
+#define uni_msg_leading(M)	((size_t)((M)->b_rptr - (M)->b_buf))
+
+/* return the maximum size of the message (length plus free space) */
+#define uni_msg_size(M)		((size_t)((M)->b_lim - (M)->b_buf));
+
+/* ensure that there is space for another S bytes. If reallocation fails
+ * free message and return -1 */
+#define uni_msg_ensure(M, S)					\
+	((uni_msg_space(M) >= (S)) ? 0 : uni_msg_extend(M, S))
+
+int uni_msg_append(struct uni_msg *, void *, size_t);
+int uni_msg_extend(struct uni_msg *, size_t);
+
+#define uni_msg_rptr(MSG, TYPE) ((TYPE)(void *)(MSG)->b_rptr)
+#define uni_msg_wptr(MSG, TYPE) ((TYPE)(void *)(MSG)->b_wptr)
+
+int uni_msg_prepend(struct uni_msg *, size_t);
+
+#ifndef _KERNEL
+
+struct uni_msg *uni_msg_alloc(size_t);
+struct uni_msg *uni_msg_build(void *, ...);
+void uni_msg_destroy(struct uni_msg *);
+u_int uni_msg_strip32(struct uni_msg *);
+u_int uni_msg_get32(struct uni_msg *);
+int uni_msg_append32(struct uni_msg *, u_int);
+int uni_msg_append8(struct uni_msg *, u_int);
+u_int uni_msg_trail32(const struct uni_msg *, int);
+struct uni_msg *uni_msg_dup(const struct uni_msg *);
+
+#endif /* _KERNEL */
+#endif