119 lines
3.6 KiB
C
119 lines
3.6 KiB
C
/*
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* Copyright 2003,2005,2006 Bernhard Walle <bernhard@bwalle.de>
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* Copyright 2010 Florian Rivoal <frivoal@gmail.com>
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* -------------------------------------------------------------------------------------------------
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 675 Mass
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* Ave, Cambridge, MA 02139, USA.
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*
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* -------------------------------------------------------------------------------------------------
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*/
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#ifndef NET_H
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#define NET_H
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#include "os.h"
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#include "slurm.h"
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#define MSGSIZE 1024
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#define UP_UPDATE_INTERVAL 20
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#define IP_UPDATE_INTERVAL 20
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#define IP_ADDRESS_LENGTH 64
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#define INTERFACE_NAME_LENGTH 33
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#ifndef gettext_noop
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#define gettext_noop(String) String
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#endif
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/** errorcodes */
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typedef enum
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{
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UNKNOWN_ERROR,
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PROC_DEVICE_NOT_FOUND,
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INTERFACE_NOT_FOUND
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} errorcode_t;
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/**
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* We need this because we cannot use static variables. Using of static variables allows
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* us not to use several instances of the plugin.
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* I know that this change makes it a bit incompatible with wormulon, but that's the
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* price to pay ...
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*/
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typedef struct
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{
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char old_interface[INTERFACE_NAME_LENGTH];
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double backup_in;
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errorcode_t errorcode;
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double backup_out;
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double cur_in;
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double cur_out;
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struct timeval prev_time;
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int correct_interface; /* treated as boolean */
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IfData ifdata;
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char ip_address[IP_ADDRESS_LENGTH];
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int ip_update_count;
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DataStats stats;
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int up;
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int up_update_count;
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FILE* proc_net_dev;
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} netdata;
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/**
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* Initializes the netload plugin. Used to set up inital values. This function must
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* be called after each change of the network interface.
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* @param device The network device, e.g. <code>ippp0</code> for ISDN on Linux.
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* @return <code>true</code> if no error occurs, <code>false</code> otherwise. If there's
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* an error, the error message may be set
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*/
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int init_netload(netdata* data, const char* device);
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/**
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* Gets the current netload. You must call init_netload() once before you use this function!
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* @param in Input load in byte/s.
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* @param out Output load in byte/s.
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* @param tot Total load in byte/s.
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*/
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void get_current_speed(netdata* data, unsigned long *in, unsigned long *out, unsigned long *tot);
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/**
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* Returns the name of the network interface.
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* @param data object
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* @return The name. String resides in data and you don't have to free the string.
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* On error, returns NULL.
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*/
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char* get_name(netdata* data);
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/**
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* Check to see if an interface is up.
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* @param data object
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* @return <code>true</code> if interface is up, <code>false</code> otherwise.
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*/
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int get_interface_up(netdata* data);
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/**
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* Returns the IP address of the network interface
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* @param data object
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* @return the IP address as string, NULL on error.
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*/
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char* get_ip_address(netdata* data);
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/**
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* Should be called to do cleanup work.
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*/
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void close_netload(netdata* data);
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#endif /* NET_H */
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