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Implement protocol module loading

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This commit is contained in:
Matthias Schiffer 2013-03-18 03:06:20 +01:00
parent 8a8800c818
commit cdf537c71c
5 changed files with 108 additions and 10 deletions
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5
include/gmrf/gmrf.h
View file

@ -58,6 +58,11 @@ size_t gmrf_iface_get_mtu(gmrf_context_t *ctx, gmrf_iface_t *iface);
bool gmrf_iface_send(gmrf_context_t *ctx, gmrf_iface_t *iface, const void *data, size_t len, const gmrf_addr_t *dest);
bool gmrf_iface_send_bc(gmrf_context_t *ctx, gmrf_iface_t *iface, const void *data, size_t len);
typedef void (*gmrf_handle_packet_func)(gmrf_context_t *ctx, gmrf_iface_t *iface, const gmrf_addr_t *source, const void *data, size_t len);
typedef struct gmrf_protocol {
gmrf_handle_packet_func handle_packet;
} gmrf_protocol_t;
#endif /* _GMRF_GMRF_H_ */

40
include/mmss/protocol.h Normal file
View file

@ -0,0 +1,40 @@
/*
Copyright (c) 2013, Matthias Schiffer <mschiffer@universe-factory.net>
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 _GMRF_MMSS_PROTOCOL_H_
#define _GMRF_MMSS_PROTOCOL_H_
#include <gmrf/gmrf.h>
typedef struct mmss_protocol {
const char *name;
const char *version;
gmrf_protocol_t* (*init)(gmrf_context_t *ctx);
} mmss_protocol_t;
#endif /* _GMRF_MMSS_PROTOCOL_H_ */

3
mmss/CMakeLists.txt
View file

@ -3,6 +3,7 @@ include_directories(${GMRF_SOURCE_DIR}/include)
add_executable(mmss
iface.c
mmss.c
protocol.c
queue.c
)
target_link_libraries(mmss rt)
target_link_libraries(mmss dl)

21
mmss/mmss.h
View file

@ -28,6 +28,7 @@
#define _GMRF_MMSS_MMSS_H_
#include <gmrf/gmrf.h>
#include <mmss/protocol.h>
#include "queue.h"
@ -37,15 +38,6 @@ struct mmss_context {
mmss_queue_t packet_queue;
};
struct gmrf_context {
gmrf_context_t *next;
mmss_context_t *mmss;
gmrf_iface_t *interfaces;
gmrf_handle_packet_func handle_packet;
};
struct mmss_network {
mmss_network_t *next;
@ -65,6 +57,15 @@ struct mmss_packet {
};
struct gmrf_context {
gmrf_context_t *next;
mmss_context_t *mmss;
gmrf_iface_t *interfaces;
gmrf_handle_packet_func handle_packet;
};
struct gmrf_iface {
gmrf_iface_t *node_next;
gmrf_iface_t *network_next;
@ -76,4 +77,6 @@ struct gmrf_iface {
};
const mmss_protocol_t* mmss_load_protocol(const char *module);
#endif /* _GMRF_MMSS_MMSS_H_ */

49
mmss/protocol.c Normal file
View file

@ -0,0 +1,49 @@
/*
Copyright (c) 2013, Matthias Schiffer <mschiffer@universe-factory.net>
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.
*/
#include "mmss.h"
#include <dlfcn.h>
#include <stdio.h>
const mmss_protocol_t* mmss_load_protocol(const char *module) {
void *handle = dlopen(module, RTLD_NOW);
if (!handle) {
fprintf(stderr, "unable to load protocol from `%s': %s\n", module, dlerror());
return NULL;
}
dlerror();
const mmss_protocol_t *proto = dlsym(handle, "mmss_protocol_info");
if (!proto) {
fprintf(stderr, "unable to load protocol from `%s': %s\n", module, dlerror());
dlclose(handle);
return NULL;
}
return proto;
}