mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
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Steffen Vogel
bd60c4424b
git-svn-id: https://zerberus.eonerc.rwth-aachen.de:8443/svn/s2ss/trunk@79 8ec27952-4edc-4aab-86aa-e87bb2611832
80 lines
1.9 KiB
C
80 lines
1.9 KiB
C
/**
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* Setup interface queuing desciplines for network emulation
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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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*/
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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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/* Some helper for TC handles */
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typedef uint32_t tc_hdl_t;
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#define TC_HDL(maj, min) ((maj & 0xFFFF) << 16 | (min & 0xFFFF))
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#define TC_HDL_MAJ(h) ((h >> 16) & 0xFFFF)
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#define TC_HDL_MIN(h) ((h >> 0) & 0xFFFF)
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#define TC_HDL_ROOT (0xFFFFFFFFU)
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/* Bitfield for valid fields in struct netem */
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#define TC_NETEM_LIMIT (1 << 0)
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#define TC_NETEM_DELAY (1 << 1)
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#define TC_NETEM_JITTER (1 << 2)
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#define TC_NETEM_DISTR (1 << 3)
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#define TC_NETEM_LOSS (1 << 4)
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#define TC_NETEM_CORRUPT (1 << 5)
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#define TC_NETEM_DUPL (1 << 6)
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struct interface;
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struct netem {
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/** Which fields of this struct contain valid data (TC_NETEM_*). */
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char valid;
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/** Delay distribution: uniform, normal, pareto, paretonormal */
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const char *distribution;
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/** Fifo limit (packets) */
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int limit;
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/** Added delay (uS) */
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int delay;
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/** Delay jitter (uS) */
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int jitter;
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/** Random loss probability (%) */
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int loss;
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/** Packet corruption probability (%) */
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int corrupt;
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/** Packet duplication probability (%) */
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int duplicate;
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};
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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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*/
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int tc_reset(struct interface *i);
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/** Create a prio queueing discipline
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*
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* @param i The interface
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* @param parent
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* @param handle
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* @param bands
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* @return
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* - 0 on success
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* - otherwise an error occured
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*/
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int tc_prio(struct interface *i, tc_hdl_t handle, int bands);
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/** Add a new network emulator discipline
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*
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* @param i The interface
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* @param parent Make this
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*/
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int tc_netem(struct interface *i, tc_hdl_t parent, struct netem *em);
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/** Add a new fwmark filter */
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int tc_mark(struct interface *i, tc_hdl_t flowid, int mark);
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#endif /* _TC_H_ */
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