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fix tc commands cleaning

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This commit is contained in:
Quentin De Coninck 2020-07-01 16:24:37 +02:00
parent 345e7a0c57
commit 8058dfd961
1 changed files with 30 additions and 14 deletions
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42
core/topo.py
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@ -73,37 +73,41 @@ class LinkCharacteristics(object):
else:
logging.error("{}: not taken into account because not specified in order in the topo param file".format(n))
def build_bandwidth_cmd(self, ifname):
return "tc qdisc del {} root ; tc qdisc add dev {} root handle 5:0 tbf rate {}mbit burst 15000 limit {}".format(
ifname, ifname, self.bandwidth, self.buffer_size())
def build_delete_tc_cmd(self, ifname):
return "tc qdisc del dev {} root; tc qdisc del dev {} ingress ".format(ifname, ifname)
def build_bandwidth_cmd(self, ifname, change=False):
return "tc qdisc {} dev {} root handle 5:0 tbf rate {}mbit burst 15000 limit {}".format(
"change" if change else "add", ifname, self.bandwidth, self.buffer_size())
def build_changing_bandwidth_cmd(self, ifname):
return "&&".join(
["sleep {} && {} ".format(
n.delta, self.build_bandwidth_cmd(ifname)) for n in self.netem_at]
n.delta, self.build_bandwidth_cmd(ifname, change=True)) for n in self.netem_at]
+ ["true &"]
)
def build_netem_cmd(self, ifname, cmd):
return "tc qdisc del dev {} root ; tc qdisc add dev {} root handle 10: netem {} delay {}ms limit 50000".format(
ifname, ifname, cmd, self.delay)
def build_netem_cmd(self, ifname, cmd, change=False):
return "tc qdisc {} dev {} root handle 10: netem {} delay {}ms limit 50000".format(
"change" if change else "add", ifname, cmd, self.delay)
def build_changing_netem_cmd(self, ifname):
return "&&".join(
["sleep {} && {} ".format(
n.delta, self.build_netem_cmd(ifname, n.cmd)) for n in self.netem_at]
n.delta, self.build_netem_cmd(ifname, n.cmd, change=True)) for n in self.netem_at]
+ ["true &"]
)
def build_policing_cmd(self, ifname):
return "tc qdisc del dev {} ingress ; tc qdisc add dev {} handle ffff: ingress ; \
tc filter add dev {} parent ffff: u32 match u32 0 0 police rate {}mbit burst {} drop".format(
ifname, ifname, ifname, self.bandwidth, int(self.buffer_size()) * 1.2)
def build_policing_cmd(self, ifname, change=False):
return "tc qdisc {} dev {} handle ffff: ingress ; \
tc filter {} dev {} parent ffff: u32 match u32 0 0 police rate {}mbit burst {} drop".format(
"change" if change else "add", ifname, "change" if change else "add", ifname,
self.bandwidth, int(self.buffer_size()) * 1.2)
def build_changing_policing_cmd(self, ifname):
return "&&".join(
["sleep {} && {} ".format(
n.delta, self.build_policing_cmd(ifname)) for n in self.netem_at]
n.delta, self.build_policing_cmd(ifname, change=True)) for n in self.netem_at]
+ ["true &"]
)
@ -254,6 +258,18 @@ class BottleneckLink(object):
def configure_bottleneck(self):
bs1_interface_names = self.topo.get_interface_names(self.bs1)
bs2_interface_names = self.topo.get_interface_names(self.bs2)
# Cleanup tc commands
for bs1_ifname in bs1_interface_names:
clean_cmd = self.link_characteristics.build_delete_tc_cmd(bs1_ifname)
logging.info(clean_cmd)
self.topo.command_top(self.bs1, clean_cmd)
for bs2_ifname in bs2_interface_names:
clean_cmd = self.link_characteristics.build_delete_tc_cmd(bs2_ifname)
logging.info(clean_cmd)
self.topo.command_top(self.bs2, clean_cmd)
# Flow bs0 -> bs3
policing_cmd = self.link_characteristics.build_policing_cmd(bs1_interface_names[0])
logging.info(policing_cmd)