mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
synced 2025-03-23 00:00:01 +01:00
Steffen Vogel
a628d8bc5c
git-svn-id: https://zerberus.eonerc.rwth-aachen.de:8443/svn/s2ss/trunk@165 8ec27952-4edc-4aab-86aa-e87bb2611832
89 lines
1.9 KiB
C
89 lines
1.9 KiB
C
/** Nodes
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*
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* The S2SS server connects multiple nodes.
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* There are multiple types of nodes:
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* - simulators
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* - servers
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* - workstations
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*
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* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
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* @copyright 2014, Institute for Automation of Complex Power Systems, EONERC
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* @file
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*/
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#ifndef _NODE_H_
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#define _NODE_H_
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <libconfig.h>
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#include "msg.h"
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#include "tc.h"
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/** Static node initialization */
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#define NODE_INIT(n) { \
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.sd = -1, \
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.name = n \
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}
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/** The datastructure for a node.
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*
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* Every entity which exchanges messages is represented by a node.
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*/
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struct node
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{
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/** The socket descriptor */
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int sd;
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/** A short identifier of the node, only used for configuration and logging */
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const char *name;
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/** Local address of the socket */
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struct sockaddr_in local;
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/** Remote address of the socket */
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struct sockaddr_in remote;
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/** The egress interface */
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struct interface *interface;
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/** Network emulator settings */
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struct netem *netem;
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/** Socket mark for netem, routing and filtering */
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int mark;
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/** A pointer to the libconfig object which instantiated this node */
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config_setting_t *cfg;
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/** Linked list pointer */
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struct node *next;
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};
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/** Connect and bind the UDP socket of this node.
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*
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* @param n A pointer to the node structure
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* @return
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* - 0 on success
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* - otherwise on error occured
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*/
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int node_connect(struct node *n);
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/** Disconnect the UDP socket of this node.
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*
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* @param n A pointer to the node structure
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* @return
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* - 0 on success
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* - otherwise on error occured
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*/
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int node_disconnect(struct node *n);
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/** Search list of nodes for a name.
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*
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* @param str The name of the wanted node
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* @param nodes A linked list of all nodes
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* @return A pointer to the node or NULL if not found
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*/
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struct node* node_lookup_name(const char *str, struct node *nodes);
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#endif /* _NODE_H_ */
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