352 lines
10 KiB
Python
352 lines
10 KiB
Python
|
#!/usr/bin/env python3
|
||
|
|
# SPDX-License-Identifier: GPL-2.0
|
||
|
|
|
||
|
|
# Controls the openvswitch module. Part of the kselftest suite, but
|
||
|
|
# can be used for some diagnostic purpose as well.
|
||
|
|
|
||
|
|
import argparse
|
||
|
|
import errno
|
||
|
|
import sys
|
||
|
|
|
||
|
|
try:
|
||
|
|
from pyroute2 import NDB
|
||
|
|
|
||
|
|
from pyroute2.netlink import NLM_F_ACK
|
||
|
|
from pyroute2.netlink import NLM_F_REQUEST
|
||
|
|
from pyroute2.netlink import genlmsg
|
||
|
|
from pyroute2.netlink import nla
|
||
|
|
from pyroute2.netlink.exceptions import NetlinkError
|
||
|
|
from pyroute2.netlink.generic import GenericNetlinkSocket
|
||
|
|
except ModuleNotFoundError:
|
||
|
|
print("Need to install the python pyroute2 package.")
|
||
|
|
sys.exit(0)
|
||
|
|
|
||
|
|
|
||
|
|
OVS_DATAPATH_FAMILY = "ovs_datapath"
|
||
|
|
OVS_VPORT_FAMILY = "ovs_vport"
|
||
|
|
OVS_FLOW_FAMILY = "ovs_flow"
|
||
|
|
OVS_PACKET_FAMILY = "ovs_packet"
|
||
|
|
OVS_METER_FAMILY = "ovs_meter"
|
||
|
|
OVS_CT_LIMIT_FAMILY = "ovs_ct_limit"
|
||
|
|
|
||
|
|
OVS_DATAPATH_VERSION = 2
|
||
|
|
OVS_DP_CMD_NEW = 1
|
||
|
|
OVS_DP_CMD_DEL = 2
|
||
|
|
OVS_DP_CMD_GET = 3
|
||
|
|
OVS_DP_CMD_SET = 4
|
||
|
|
|
||
|
|
OVS_VPORT_CMD_NEW = 1
|
||
|
|
OVS_VPORT_CMD_DEL = 2
|
||
|
|
OVS_VPORT_CMD_GET = 3
|
||
|
|
OVS_VPORT_CMD_SET = 4
|
||
|
|
|
||
|
|
|
||
|
|
class ovs_dp_msg(genlmsg):
|
||
|
|
# include the OVS version
|
||
|
|
# We need a custom header rather than just being able to rely on
|
||
|
|
# genlmsg because fields ends up not expressing everything correctly
|
||
|
|
# if we use the canonical example of setting fields = (('customfield',),)
|
||
|
|
fields = genlmsg.fields + (("dpifindex", "I"),)
|
||
|
|
|
||
|
|
|
||
|
|
class OvsDatapath(GenericNetlinkSocket):
|
||
|
|
|
||
|
|
OVS_DP_F_VPORT_PIDS = 1 << 1
|
||
|
|
OVS_DP_F_DISPATCH_UPCALL_PER_CPU = 1 << 3
|
||
|
|
|
||
|
|
class dp_cmd_msg(ovs_dp_msg):
|
||
|
|
"""
|
||
|
|
Message class that will be used to communicate with the kernel module.
|
||
|
|
"""
|
||
|
|
|
||
|
|
nla_map = (
|
||
|
|
("OVS_DP_ATTR_UNSPEC", "none"),
|
||
|
|
("OVS_DP_ATTR_NAME", "asciiz"),
|
||
|
|
("OVS_DP_ATTR_UPCALL_PID", "array(uint32)"),
|
||
|
|
("OVS_DP_ATTR_STATS", "dpstats"),
|
||
|
|
("OVS_DP_ATTR_MEGAFLOW_STATS", "megaflowstats"),
|
||
|
|
("OVS_DP_ATTR_USER_FEATURES", "uint32"),
|
||
|
|
("OVS_DP_ATTR_PAD", "none"),
|
||
|
|
("OVS_DP_ATTR_MASKS_CACHE_SIZE", "uint32"),
|
||
|
|
("OVS_DP_ATTR_PER_CPU_PIDS", "array(uint32)"),
|
||
|
|
)
|
||
|
|
|
||
|
|
class dpstats(nla):
|
||
|
|
fields = (
|
||
|
|
("hit", "=Q"),
|
||
|
|
("missed", "=Q"),
|
||
|
|
("lost", "=Q"),
|
||
|
|
("flows", "=Q"),
|
||
|
|
)
|
||
|
|
|
||
|
|
class megaflowstats(nla):
|
||
|
|
fields = (
|
||
|
|
("mask_hit", "=Q"),
|
||
|
|
("masks", "=I"),
|
||
|
|
("padding", "=I"),
|
||
|
|
("cache_hits", "=Q"),
|
||
|
|
("pad1", "=Q"),
|
||
|
|
)
|
||
|
|
|
||
|
|
def __init__(self):
|
||
|
|
GenericNetlinkSocket.__init__(self)
|
||
|
|
self.bind(OVS_DATAPATH_FAMILY, OvsDatapath.dp_cmd_msg)
|
||
|
|
|
||
|
|
def info(self, dpname, ifindex=0):
|
||
|
|
msg = OvsDatapath.dp_cmd_msg()
|
||
|
|
msg["cmd"] = OVS_DP_CMD_GET
|
||
|
|
msg["version"] = OVS_DATAPATH_VERSION
|
||
|
|
msg["reserved"] = 0
|
||
|
|
msg["dpifindex"] = ifindex
|
||
|
|
msg["attrs"].append(["OVS_DP_ATTR_NAME", dpname])
|
||
|
|
|
||
|
|
try:
|
||
|
|
reply = self.nlm_request(
|
||
|
|
msg, msg_type=self.prid, msg_flags=NLM_F_REQUEST
|
||
|
|
)
|
||
|
|
reply = reply[0]
|
||
|
|
except NetlinkError as ne:
|
||
|
|
if ne.code == errno.ENODEV:
|
||
|
|
reply = None
|
||
|
|
else:
|
||
|
|
raise ne
|
||
|
|
|
||
|
|
return reply
|
||
|
|
|
||
|
|
def create(self, dpname, shouldUpcall=False, versionStr=None):
|
||
|
|
msg = OvsDatapath.dp_cmd_msg()
|
||
|
|
msg["cmd"] = OVS_DP_CMD_NEW
|
||
|
|
if versionStr is None:
|
||
|
|
msg["version"] = OVS_DATAPATH_VERSION
|
||
|
|
else:
|
||
|
|
msg["version"] = int(versionStr.split(":")[0], 0)
|
||
|
|
msg["reserved"] = 0
|
||
|
|
msg["dpifindex"] = 0
|
||
|
|
msg["attrs"].append(["OVS_DP_ATTR_NAME", dpname])
|
||
|
|
|
||
|
|
dpfeatures = 0
|
||
|
|
if versionStr is not None and versionStr.find(":") != -1:
|
||
|
|
dpfeatures = int(versionStr.split(":")[1], 0)
|
||
|
|
else:
|
||
|
|
dpfeatures = OvsDatapath.OVS_DP_F_VPORT_PIDS
|
||
|
|
|
||
|
|
msg["attrs"].append(["OVS_DP_ATTR_USER_FEATURES", dpfeatures])
|
||
|
|
if not shouldUpcall:
|
||
|
|
msg["attrs"].append(["OVS_DP_ATTR_UPCALL_PID", 0])
|
||
|
|
|
||
|
|
try:
|
||
|
|
reply = self.nlm_request(
|
||
|
|
msg, msg_type=self.prid, msg_flags=NLM_F_REQUEST | NLM_F_ACK
|
||
|
|
)
|
||
|
|
reply = reply[0]
|
||
|
|
except NetlinkError as ne:
|
||
|
|
if ne.code == errno.EEXIST:
|
||
|
|
reply = None
|
||
|
|
else:
|
||
|
|
raise ne
|
||
|
|
|
||
|
|
return reply
|
||
|
|
|
||
|
|
def destroy(self, dpname):
|
||
|
|
msg = OvsDatapath.dp_cmd_msg()
|
||
|
|
msg["cmd"] = OVS_DP_CMD_DEL
|
||
|
|
msg["version"] = OVS_DATAPATH_VERSION
|
||
|
|
msg["reserved"] = 0
|
||
|
|
msg["dpifindex"] = 0
|
||
|
|
msg["attrs"].append(["OVS_DP_ATTR_NAME", dpname])
|
||
|
|
|
||
|
|
try:
|
||
|
|
reply = self.nlm_request(
|
||
|
|
msg, msg_type=self.prid, msg_flags=NLM_F_REQUEST | NLM_F_ACK
|
||
|
|
)
|
||
|
|
reply = reply[0]
|
||
|
|
except NetlinkError as ne:
|
||
|
|
if ne.code == errno.ENODEV:
|
||
|
|
reply = None
|
||
|
|
else:
|
||
|
|
raise ne
|
||
|
|
|
||
|
|
return reply
|
||
|
|
|
||
|
|
|
||
|
|
class OvsVport(GenericNetlinkSocket):
|
||
|
|
class ovs_vport_msg(ovs_dp_msg):
|
||
|
|
nla_map = (
|
||
|
|
("OVS_VPORT_ATTR_UNSPEC", "none"),
|
||
|
|
("OVS_VPORT_ATTR_PORT_NO", "uint32"),
|
||
|
|
("OVS_VPORT_ATTR_TYPE", "uint32"),
|
||
|
|
("OVS_VPORT_ATTR_NAME", "asciiz"),
|
||
|
|
("OVS_VPORT_ATTR_OPTIONS", "none"),
|
||
|
|
("OVS_VPORT_ATTR_UPCALL_PID", "array(uint32)"),
|
||
|
|
("OVS_VPORT_ATTR_STATS", "vportstats"),
|
||
|
|
("OVS_VPORT_ATTR_PAD", "none"),
|
||
|
|
("OVS_VPORT_ATTR_IFINDEX", "uint32"),
|
||
|
|
("OVS_VPORT_ATTR_NETNSID", "uint32"),
|
||
|
|
)
|
||
|
|
|
||
|
|
class vportstats(nla):
|
||
|
|
fields = (
|
||
|
|
("rx_packets", "=Q"),
|
||
|
|
("tx_packets", "=Q"),
|
||
|
|
("rx_bytes", "=Q"),
|
||
|
|
("tx_bytes", "=Q"),
|
||
|
|
("rx_errors", "=Q"),
|
||
|
|
("tx_errors", "=Q"),
|
||
|
|
("rx_dropped", "=Q"),
|
||
|
|
("tx_dropped", "=Q"),
|
||
|
|
)
|
||
|
|
|
||
|
|
def type_to_str(vport_type):
|
||
|
|
if vport_type == 1:
|
||
|
|
return "netdev"
|
||
|
|
elif vport_type == 2:
|
||
|
|
return "internal"
|
||
|
|
elif vport_type == 3:
|
||
|
|
return "gre"
|
||
|
|
elif vport_type == 4:
|
||
|
|
return "vxlan"
|
||
|
|
elif vport_type == 5:
|
||
|
|
return "geneve"
|
||
|
|
return "unknown:%d" % vport_type
|
||
|
|
|
||
|
|
def __init__(self):
|
||
|
|
GenericNetlinkSocket.__init__(self)
|
||
|
|
self.bind(OVS_VPORT_FAMILY, OvsVport.ovs_vport_msg)
|
||
|
|
|
||
|
|
def info(self, vport_name, dpifindex=0, portno=None):
|
||
|
|
msg = OvsVport.ovs_vport_msg()
|
||
|
|
|
||
|
|
msg["cmd"] = OVS_VPORT_CMD_GET
|
||
|
|
msg["version"] = OVS_DATAPATH_VERSION
|
||
|
|
msg["reserved"] = 0
|
||
|
|
msg["dpifindex"] = dpifindex
|
||
|
|
|
||
|
|
if portno is None:
|
||
|
|
msg["attrs"].append(["OVS_VPORT_ATTR_NAME", vport_name])
|
||
|
|
else:
|
||
|
|
msg["attrs"].append(["OVS_VPORT_ATTR_PORT_NO", portno])
|
||
|
|
|
||
|
|
try:
|
||
|
|
reply = self.nlm_request(
|
||
|
|
msg, msg_type=self.prid, msg_flags=NLM_F_REQUEST
|
||
|
|
)
|
||
|
|
reply = reply[0]
|
||
|
|
except NetlinkError as ne:
|
||
|
|
if ne.code == errno.ENODEV:
|
||
|
|
reply = None
|
||
|
|
else:
|
||
|
|
raise ne
|
||
|
|
return reply
|
||
|
|
|
||
|
|
|
||
|
|
def print_ovsdp_full(dp_lookup_rep, ifindex, ndb=NDB()):
|
||
|
|
dp_name = dp_lookup_rep.get_attr("OVS_DP_ATTR_NAME")
|
||
|
|
base_stats = dp_lookup_rep.get_attr("OVS_DP_ATTR_STATS")
|
||
|
|
megaflow_stats = dp_lookup_rep.get_attr("OVS_DP_ATTR_MEGAFLOW_STATS")
|
||
|
|
user_features = dp_lookup_rep.get_attr("OVS_DP_ATTR_USER_FEATURES")
|
||
|
|
masks_cache_size = dp_lookup_rep.get_attr("OVS_DP_ATTR_MASKS_CACHE_SIZE")
|
||
|
|
|
||
|
|
print("%s:" % dp_name)
|
||
|
|
print(
|
||
|
|
" lookups: hit:%d missed:%d lost:%d"
|
||
|
|
% (base_stats["hit"], base_stats["missed"], base_stats["lost"])
|
||
|
|
)
|
||
|
|
print(" flows:%d" % base_stats["flows"])
|
||
|
|
pkts = base_stats["hit"] + base_stats["missed"]
|
||
|
|
avg = (megaflow_stats["mask_hit"] / pkts) if pkts != 0 else 0.0
|
||
|
|
print(
|
||
|
|
" masks: hit:%d total:%d hit/pkt:%f"
|
||
|
|
% (megaflow_stats["mask_hit"], megaflow_stats["masks"], avg)
|
||
|
|
)
|
||
|
|
print(" caches:")
|
||
|
|
print(" masks-cache: size:%d" % masks_cache_size)
|
||
|
|
|
||
|
|
if user_features is not None:
|
||
|
|
print(" features: 0x%X" % user_features)
|
||
|
|
|
||
|
|
# port print out
|
||
|
|
vpl = OvsVport()
|
||
|
|
for iface in ndb.interfaces:
|
||
|
|
rep = vpl.info(iface.ifname, ifindex)
|
||
|
|
if rep is not None:
|
||
|
|
print(
|
||
|
|
" port %d: %s (%s)"
|
||
|
|
% (
|
||
|
|
rep.get_attr("OVS_VPORT_ATTR_PORT_NO"),
|
||
|
|
rep.get_attr("OVS_VPORT_ATTR_NAME"),
|
||
|
|
OvsVport.type_to_str(rep.get_attr("OVS_VPORT_ATTR_TYPE")),
|
||
|
|
)
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
def main(argv):
|
||
|
|
parser = argparse.ArgumentParser()
|
||
|
|
parser.add_argument(
|
||
|
|
"-v",
|
||
|
|
"--verbose",
|
||
|
|
action="count",
|
||
|
|
help="Increment 'verbose' output counter.",
|
||
|
|
)
|
||
|
|
subparsers = parser.add_subparsers()
|
||
|
|
|
||
|
|
showdpcmd = subparsers.add_parser("show")
|
||
|
|
showdpcmd.add_argument(
|
||
|
|
"showdp", metavar="N", type=str, nargs="?", help="Datapath Name"
|
||
|
|
)
|
||
|
|
|
||
|
|
adddpcmd = subparsers.add_parser("add-dp")
|
||
|
|
adddpcmd.add_argument("adddp", help="Datapath Name")
|
||
|
|
adddpcmd.add_argument(
|
||
|
|
"-u",
|
||
|
|
"--upcall",
|
||
|
|
action="store_true",
|
||
|
|
help="Leave open a reader for upcalls",
|
||
|
|
)
|
||
|
|
adddpcmd.add_argument(
|
||
|
|
"-V",
|
||
|
|
"--versioning",
|
||
|
|
required=False,
|
||
|
|
help="Specify a custom version / feature string",
|
||
|
|
)
|
||
|
|
|
||
|
|
deldpcmd = subparsers.add_parser("del-dp")
|
||
|
|
deldpcmd.add_argument("deldp", help="Datapath Name")
|
||
|
|
|
||
|
|
args = parser.parse_args()
|
||
|
|
|
||
|
|
ovsdp = OvsDatapath()
|
||
|
|
ndb = NDB()
|
||
|
|
|
||
|
|
if hasattr(args, "showdp"):
|
||
|
|
found = False
|
||
|
|
for iface in ndb.interfaces:
|
||
|
|
rep = None
|
||
|
|
if args.showdp is None:
|
||
|
|
rep = ovsdp.info(iface.ifname, 0)
|
||
|
|
elif args.showdp == iface.ifname:
|
||
|
|
rep = ovsdp.info(iface.ifname, 0)
|
||
|
|
|
||
|
|
if rep is not None:
|
||
|
|
found = True
|
||
|
|
print_ovsdp_full(rep, iface.index, ndb)
|
||
|
|
|
||
|
|
if not found:
|
||
|
|
msg = "No DP found"
|
||
|
|
if args.showdp is not None:
|
||
|
|
msg += ":'%s'" % args.showdp
|
||
|
|
print(msg)
|
||
|
|
elif hasattr(args, "adddp"):
|
||
|
|
rep = ovsdp.create(args.adddp, args.upcall, args.versioning)
|
||
|
|
if rep is None:
|
||
|
|
print("DP '%s' already exists" % args.adddp)
|
||
|
|
else:
|
||
|
|
print("DP '%s' added" % args.adddp)
|
||
|
|
elif hasattr(args, "deldp"):
|
||
|
|
ovsdp.destroy(args.deldp)
|
||
|
|
|
||
|
|
return 0
|
||
|
|
|
||
|
|
|
||
|
|
if __name__ == "__main__":
|
||
|
|
sys.exit(main(sys.argv))
|