commit 742d4050d3f283018975c6d0437c7b4275d277fe Author: Jiri Prochazka <jprochaz(a)redhat.com&gt; Date: Thu May 21 14:24:19 2015 +0200 Add Slave methods for NetEm value parsing from interface config This patch provides Slave methods for parsing values from NetEm tag in config dict. Signed-off-by: Jiri Prochazka <jprochaz(a)redhat.com&gt; Signed-off-by: Jan Tluka <jtluka(a)redhat.com&gt; Acked-by: Jiri Pirko <jiri(a)resnulli.us&gt; lnst/Slave/NetConfigCommon.py | 77 +++++++++++++++++++++++++++++++++++++++++ 1 files changed, 77 insertions(+), 0 deletions(-) --- diff --git a/lnst/Slave/NetConfigCommon.py b/lnst/Slave/NetConfigCommon.py index c60419b..ffcb0b4 100644 --- a/lnst/Slave/NetConfigCommon.py +++ b/lnst/Slave/NetConfigCommon.py @@ -35,3 +35,80 @@ def get_slave_option(netdev, slave_id, opt_name): if option == opt_name: return value return None + +def get_netem_option(netem_tag, netem_name, opt_name): + try: + options = netem_tag[netem_name] + except KeyError: + return None + for opt in options: + if opt["name"] == opt_name: + return opt["value"] + +def parse_delay(config): + time = get_netem_option(config, "delay", "time") + jitter= get_netem_option(config, "delay", "jitter") + correlation = get_netem_option(config, "delay", "correlation") + distribution = get_netem_option(config, "delay", "distribution") + rv = "delay %s " % time + if jitter is not None: + rv = rv + "%s " % jitter + if correlation is not None: + rv = rv + "%s " % correlation + if distribution is not None: + rv = rv + "distribution %s " % distribution + return rv + +def parse_loss(config): + percent = get_netem_option(config, "loss", "percent") + correlation = get_netem_option(config, "loss", "correlation") + rv = "loss %s " % percent + if correlation is not None: + rv = rv + "%s " % correlation + return rv + +def parse_corrupt(config): + percent = get_netem_option(config, "corrupt", "percent") + correlation = get_netem_option(config, "corrupt", "correlation") + rv = "corrupt %s " % percent + if correlation is not None: + rv = rv + "%s " % correlation + return rv + +def parse_duplication(config): + percent = get_netem_option(config, "duplication", "percent") + correlation = get_netem_option(config, "duplication", "correlation") + rv = "duplicate %s " % percent + if correlation is not None: + rv = rv + "%s " % correlation + return rv + +def parse_reordering(config): + percent = get_netem_option(config, "reordering", "percent") + correlation = get_netem_option(config, "reordering", "correlation") + gap_distance = get_netem_option(config, "reordering", "gap_distance") + rv = "reorder %s " % percent + if correlation is not None: + rv = rv + "%s " % correlation + if gap_distance is not None: + rv = rv + "gap %s " % gap_distance + return rv + +def parse_netem(config): + rv = "" + # delay parsing + if "delay" in config: + rv = rv + parse_delay(config) + # loss parsing + if "loss" in config: + rv = rv + parse_loss(config) + # corrupt + if "corrupt" in config: + rv = rv + parse_corrupt(config) + # duplication + if "duplication" in config: + rv = rv + parse_duplication(config) + # reordering + if "reordering" in config: + rv = rv + parse_reordering(config) + return rv