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authorMatthias Schiffer <mschiffer@universe-factory.net>2012-02-25 22:53:33 +0100
committerMatthias Schiffer <mschiffer@universe-factory.net>2012-02-25 22:53:33 +0100
commit57a63fc9304e71ddd2cf434cc4c8789a1a3a3c88 (patch)
tree081b9dc0d024f7b57dde74c6858274c3d62df9aa /src/fastd.h
parentd86a948a67c44ca1c484cfbe30261f1bf61c59ab (diff)
downloadfastd-57a63fc9304e71ddd2cf434cc4c8789a1a3a3c88.tar
fastd-57a63fc9304e71ddd2cf434cc4c8789a1a3a3c88.zip
Init tun interface and define some structures
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+/*
+ 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_ */