mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
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Steffen Vogel
0524afa630
iproute2 is now not required anymore. everything is handled by nettling sockets
89 lines
3.2 KiB
C
89 lines
3.2 KiB
C
/** Setup interface queuing desciplines for network emulation
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*
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* We use the firewall mark to apply individual netem qdiscs
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* per node. Every node uses an own BSD socket.
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* By using so SO_MARK socket option (see socket(7))
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* we can classify traffic originating from a node seperately.
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*
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* @file
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* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
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* @copyright 2014-2015, Institute for Automation of Complex Power Systems, EONERC
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* This file is part of S2SS. All Rights Reserved. Proprietary and confidential.
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* Unauthorized copying of this file, via any medium is strictly prohibited.
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*********************************************************************************/
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#ifndef _TC_H_
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#define _TC_H_
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#include <stdint.h>
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#include <netlink/route/qdisc.h>
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#include <netlink/route/classifier.h>
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#include <libconfig.h>
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typedef uint32_t tc_hdl_t;
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struct interface;
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/** Parse network emulator (netem) settings.
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*
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* @param cfg A libconfig object containing the settings.
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* @param ne A pointer to a libnl3 qdisc object where setting will be written to.
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* @retval 0 Success. Everything went well.
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* @retval <0 Error. Something went wrong.
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*/
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int tc_parse(config_setting_t *cfg, struct rtnl_qdisc *ne);
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/** Print network emulator (netem) setting into buffer.
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*
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* @param buf A character buffer to write to.
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* @param len The length of the supplied buffer.
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* @param tc A pointer to the libnl3 qdisc object where settings will be read from.
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* @retval 0 Success. Everything went well.
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* @retval <0 Error. Something went wrong.
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*/
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int tc_print(char *buf, size_t len, struct rtnl_qdisc *ne);
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/** Remove all queuing disciplines and filters.
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*
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* @param i The interface
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* @retval 0 Success. Everything went well.
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* @retval <0 Error. Something went wrong.
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*/
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int tc_reset(struct interface *i);
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/** Create a priority (prio) queueing discipline.
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*
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* @param i[in] The interface
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* @param qd[in,out] The libnl3 object of the new prio qdisc.
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* @param handle[in] The handle for the new qdisc
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* @param bands[in] The number of classes for this new qdisc
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* @retval 0 Success. Everything went well.
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* @retval <0 Error. Something went wrong.
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*/
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int tc_prio(struct interface *i, struct rtnl_qdisc **qd, tc_hdl_t handle, int bands);
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/** Add a new network emulator (netem) discipline.
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*
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* @param i[in] The interface to which this qdisc will be added.
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* @param qd[in,out] The libnl3 object of the new prio qdisc.
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* @param handle[in] The handle of the new qdisc.
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* @param parent[in] Make this qdisc a child of this class
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* @retval 0 Success. Everything went well.
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* @retval <0 Error. Something went wrong.
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*/
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int tc_netem(struct interface *i, struct rtnl_qdisc **qd, tc_hdl_t handle, tc_hdl_t parent);
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/** Add a new filter based on the netfilter mark.
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*
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* @param i The interface to which this classifier is applied to.
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* @param cls[in,out] The libnl3 object of the new prio qdisc.
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* @param flowid The destination class for matched traffic
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* @param mark The netfilter firewall mark (sometime called 'fwmark')
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* @retval 0 Success. Everything went well.
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* @retval <0 Error. Something went wrong.
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*/
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int tc_mark(struct interface *i, struct rtnl_cls **cls, tc_hdl_t flowid, uint32_t mark);
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#endif /* _TC_H_ */
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