Init tun interface and define some structures

1 files changed, 102 insertions, 0 deletions

diff --git a/src/fastd.h b/src/fastd.h
new file mode 100644
index 0000000..06b69b2
--- /dev/null
+++ b/src/fastd.h
@@ -0,0 +1,102 @@
+/*
+  Copyright (c) 2012, Matthias Schiffer <mschiffer@universe-factory.net>
+  Partly based on QuickTun Copyright (c) 2010, Ivo Smits <Ivo@UCIS.nl>.
+  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 COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
+*/
+
+
+#ifndef _FASTD_FASTD_H_
+#define _FASTD_FASTD_H_
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+typedef enum _fastd_loglevel {
+	LOG_FATAL = 0,
+	LOG_ERROR,
+	LOG_WARN,
+	LOG_INFO,
+	LOG_DEBUG,
+} fastd_loglevel;
+
+
+typedef enum _fastd_protocol {
+	PROTOCOL_ETHERNET,
+	PROTOCOL_IP,
+} fastd_protocol;
+
+typedef struct _fastd_peer_config {
+	struct _fastd_peer_config *next;
+} fastd_peer_config;
+
+
+typedef struct _fastd_peer_state {
+	struct _fastd_peer_state *next;
+
+	const fastd_peer_config *config;
+} fastd_peer_state;
+
+typedef struct _fastd_context fastd_context;
+
+typedef struct _fastd_method {
+	const char *name;
+	void (*method_init)(const fastd_context *ctx);
+
+	void (*method_recv)(const fastd_context *ctx, void *buffer, size_t len);
+	void (*method_send)(const fastd_context *ctx, void *buffer, size_t len);
+} fastd_method;
+
+typedef struct _fastd_config {
+	fastd_loglevel loglevel;
+
+	uint16_t mtu;
+	fastd_protocol protocol;
+
+	fastd_method *method;
+
+	unsigned n_peers;
+	fastd_peer_config *peers;
+} fastd_config;
+
+struct _fastd_context {
+	const fastd_config *conf;
+};
+
+
+#define pr_log(context, level, args...) if ((context)->conf == NULL || (level) <= (context)->conf->loglevel) do { fprintf(stderr, args); fputs("\n", stderr); } while(0)
+
+#define pr_fatal(context, args...) pr_log(context, LOG_FATAL, args)
+#define pr_error(context, args...) pr_log(context, LOG_ERROR, args)
+#define pr_warn(context, args...) pr_log(context, LOG_WARN, args)
+#define pr_info(context, args...) pr_log(context, LOG_INFO, args)
+#define pr_debug(context, args...) pr_log(context, LOG_DEBUG, args)
+
+#define exit_fatal(context, args...) do { pr_fatal(context, args); exit(1); } while(0)
+#define exit_fatal_bug(context, message) exit_fatal(context, "BUG: %s", message)
+#define exit_fatal_errno(context, message) exit_fatal(context, "%s: %s", message, strerror(errno))
+
+#endif /* _FASTD_FASTD_H_ */