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/*
* This file is a part of plotnetcfg, a tool to visualize network config.
* Copyright (C) 2014 Red Hat, Inc. -- Jiri Benc <jbenc@redhat.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef _HANDLER_H
#define _HANDLER_H
#include <stdio.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <linux/rtnetlink.h>
#include "if.h"
#include "netns.h"
/* Only one handler for each driver allowed.
* Generic handlers called for every interface are supported and are created
* by setting driver to NULL. Generic handlers are not allowed to use
* handler_private field in struct if_entry.
*
* The scan callback is called during interface scanning. Only actions
* related to the passed single interface may be performed.
* The post callback is called after all interfaces are scanned.
* Inter-interface analysis is possible at this step.
*/
struct handler {
struct handler *next;
const char *driver;
int (*netlink)(struct if_entry *entry, struct rtattr **tb);
int (*scan)(struct if_entry *entry);
int (*post)(struct if_entry *entry, struct netns_entry *root);
void (*cleanup)(struct if_entry *entry);
};
void handler_register(struct handler *h);
int handler_netlink(struct if_entry *entry, struct rtattr **tb);
int handler_scan(struct if_entry *entry);
int handler_post(struct netns_entry *root);
void handler_cleanup(struct if_entry *entry);
/* For use as a callback. It calls free() on handler_private. */
void handler_generic_cleanup(struct if_entry *entry);
struct global_handler {
struct global_handler *next;
void (*init)(void);
int (*post)(struct netns_entry *root);
void (*cleanup)(struct netns_entry *root);
};
void global_handler_register(struct global_handler *h);
void global_handler_init(void);
int global_handler_post(struct netns_entry *root);
void global_handler_cleanup(struct netns_entry *root);
#endif
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