#include "netdevsim.h"
-static int nsim_get_port_parent_id(struct net_device *dev,
- struct netdev_phys_item_id *ppid)
-{
- struct netdevsim *ns = netdev_priv(dev);
-
- memcpy(ppid, &ns->nsim_dev->switch_id, sizeof(*ppid));
- return 0;
-}
-
-static int nsim_init(struct net_device *dev)
-{
- struct netdevsim *ns = netdev_priv(dev);
- char dev_link_name[32];
- int err;
-
- ns->ddir = debugfs_create_dir("0", ns->nsim_dev->ports_ddir);
- if (IS_ERR_OR_NULL(ns->ddir))
- return -ENOMEM;
-
- sprintf(dev_link_name, "../../../" DRV_NAME "%u",
- ns->nsim_dev->nsim_bus_dev->dev.id);
- debugfs_create_symlink("dev", ns->ddir, dev_link_name);
-
- err = nsim_bpf_init(ns);
- if (err)
- goto err_debugfs_destroy;
-
- nsim_ipsec_init(ns);
-
- return 0;
-
-err_debugfs_destroy:
- debugfs_remove_recursive(ns->ddir);
- return err;
-}
-
-static void nsim_uninit(struct net_device *dev)
-{
- struct netdevsim *ns = netdev_priv(dev);
-
- nsim_ipsec_teardown(ns);
- debugfs_remove_recursive(ns->ddir);
- nsim_bpf_uninit(ns);
-}
-
-static void nsim_free(struct net_device *dev)
-{
- struct netdevsim *ns = netdev_priv(dev);
-
- nsim_bus_dev_del(ns->nsim_bus_dev);
- /* netdev and vf state will be freed out of device_release() */
-}
-
static netdev_tx_t nsim_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct netdevsim *ns = netdev_priv(dev);
}
static const struct net_device_ops nsim_netdev_ops = {
- .ndo_init = nsim_init,
- .ndo_uninit = nsim_uninit,
.ndo_start_xmit = nsim_start_xmit,
.ndo_set_rx_mode = nsim_set_rx_mode,
.ndo_set_mac_address = eth_mac_addr,
.ndo_setup_tc = nsim_setup_tc,
.ndo_set_features = nsim_set_features,
.ndo_bpf = nsim_bpf,
- .ndo_get_port_parent_id = nsim_get_port_parent_id,
};
static void nsim_setup(struct net_device *dev)
ether_setup(dev);
eth_hw_addr_random(dev);
- dev->netdev_ops = &nsim_netdev_ops;
- dev->needs_free_netdev = true;
- dev->priv_destructor = nsim_free;
-
dev->tx_queue_len = 0;
dev->flags |= IFF_NOARP;
dev->flags &= ~IFF_MULTICAST;
dev->max_mtu = ETH_MAX_MTU;
}
-static int nsim_validate(struct nlattr *tb[], struct nlattr *data[],
- struct netlink_ext_ack *extack)
-{
- if (tb[IFLA_ADDRESS]) {
- if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
- return -EINVAL;
- if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
- return -EADDRNOTAVAIL;
- }
- return 0;
-}
-
-static int nsim_newlink(struct net *src_net, struct net_device *dev,
- struct nlattr *tb[], struct nlattr *data[],
- struct netlink_ext_ack *extack)
+struct netdevsim *
+nsim_create(struct nsim_dev *nsim_dev, struct nsim_dev_port *nsim_dev_port)
{
- struct netdevsim *ns = netdev_priv(dev);
+ struct net_device *dev;
+ struct netdevsim *ns;
int err;
- ns->netdev = dev;
- ns->nsim_bus_dev = nsim_bus_dev_new_with_ns(ns);
- if (IS_ERR(ns->nsim_bus_dev))
- return PTR_ERR(ns->nsim_bus_dev);
+ dev = alloc_netdev(sizeof(*ns), "eth%d", NET_NAME_UNKNOWN, nsim_setup);
+ if (!dev)
+ return ERR_PTR(-ENOMEM);
+ ns = netdev_priv(dev);
+ ns->netdev = dev;
+ ns->nsim_dev = nsim_dev;
+ ns->nsim_dev_port = nsim_dev_port;
+ ns->nsim_bus_dev = nsim_dev->nsim_bus_dev;
SET_NETDEV_DEV(dev, &ns->nsim_bus_dev->dev);
+ dev->netdev_ops = &nsim_netdev_ops;
- ns->nsim_dev = dev_get_drvdata(&ns->nsim_bus_dev->dev);
+ rtnl_lock();
+ err = nsim_bpf_init(ns);
+ if (err)
+ goto err_free_netdev;
+
+ nsim_ipsec_init(ns);
err = register_netdevice(dev);
if (err)
- goto err_dev_del;
- return 0;
+ goto err_ipsec_teardown;
+ rtnl_unlock();
-err_dev_del:
- nsim_bus_dev_del(ns->nsim_bus_dev);
- return err;
+ return ns;
+
+err_ipsec_teardown:
+ nsim_ipsec_teardown(ns);
+ nsim_bpf_uninit(ns);
+ rtnl_unlock();
+err_free_netdev:
+ free_netdev(dev);
+ return ERR_PTR(err);
+}
+
+void nsim_destroy(struct netdevsim *ns)
+{
+ struct net_device *dev = ns->netdev;
+
+ rtnl_lock();
+ unregister_netdevice(dev);
+ nsim_ipsec_teardown(ns);
+ nsim_bpf_uninit(ns);
+ rtnl_unlock();
+ free_netdev(dev);
+}
+
+static int nsim_validate(struct nlattr *tb[], struct nlattr *data[],
+ struct netlink_ext_ack *extack)
+{
+ NL_SET_ERR_MSG_MOD(extack, "Please use: echo \"[ID] [PORT_COUNT]\" > /sys/bus/netdevsim/new_device");
+ return -EOPNOTSUPP;
}
static struct rtnl_link_ops nsim_link_ops __read_mostly = {
.kind = DRV_NAME,
- .priv_size = sizeof(struct netdevsim),
- .setup = nsim_setup,
.validate = nsim_validate,
- .newlink = nsim_newlink,
};
static int __init nsim_module_init(void)
#!/usr/bin/python3
# Copyright (C) 2017 Netronome Systems, Inc.
+# Copyright (c) 2019 Mellanox Technologies. All rights reserved
#
# This software is licensed under the GNU General License Version 2,
# June 1991 as shown in the file COPYING in the top-level directory of this
from datetime import datetime
import argparse
+import errno
import json
import os
import pprint
import random
+import re
import string
import struct
import subprocess
return dfs
-class NetdevSim:
+class NetdevSimDev:
"""
- Class for netdevsim netdevice and its attributes.
+ Class for netdevsim bus device and its attributes.
"""
- def __init__(self, link=None):
- self.link = link
+ def __init__(self, port_count=1):
+ addr = 0
+ while True:
+ try:
+ with open("/sys/bus/netdevsim/new_device", "w") as f:
+ f.write("%u %u" % (addr, port_count))
+ except OSError as e:
+ if e.errno == errno.ENOSPC:
+ addr += 1
+ continue
+ raise e
+ break
+ self.addr = addr
+
+ # As probe of netdevsim device might happen from a workqueue,
+ # so wait here until all netdevs appear.
+ self.wait_for_netdevs(port_count)
+
+ ret, out = cmd("udevadm settle", fail=False)
+ if ret:
+ raise Exception("udevadm settle failed")
+ ifnames = self.get_ifnames()
- self.dev = self._netdevsim_create()
devs.append(self)
+ self.dfs_dir = "/sys/kernel/debug/netdevsim/netdevsim%u/" % addr
+
+ self.nsims = []
+ for port_index in range(port_count):
+ self.nsims.append(NetdevSim(self, port_index, ifnames[port_index]))
+
+ def get_ifnames(self):
+ ifnames = []
+ listdir = os.listdir("/sys/bus/netdevsim/devices/netdevsim%u/net/" % self.addr)
+ for ifname in listdir:
+ ifnames.append(ifname)
+ ifnames.sort()
+ return ifnames
+
+ def wait_for_netdevs(self, port_count):
+ timeout = 5
+ timeout_start = time.time()
+
+ while True:
+ try:
+ ifnames = self.get_ifnames()
+ except FileNotFoundError as e:
+ ifnames = []
+ if len(ifnames) == port_count:
+ break
+ if time.time() < timeout_start + timeout:
+ continue
+ raise Exception("netdevices did not appear within timeout")
- self.ns = ""
+ def dfs_num_bound_progs(self):
+ path = os.path.join(self.dfs_dir, "bpf_bound_progs")
+ _, progs = cmd('ls %s' % (path))
+ return len(progs.split())
- self.dfs_dir = '/sys/kernel/debug/netdevsim/netdevsim0/ports/0/'
- self.dev_dir = self.dfs_dir + '/dev/'
- self.dfs_refresh()
+ def dfs_get_bound_progs(self, expected):
+ progs = DebugfsDir(os.path.join(self.dfs_dir, "bpf_bound_progs"))
+ if expected is not None:
+ if len(progs) != expected:
+ fail(True, "%d BPF programs bound, expected %d" %
+ (len(progs), expected))
+ return progs
- def __getitem__(self, key):
- return self.dev[key]
+ def remove(self):
+ with open("/sys/bus/netdevsim/del_device", "w") as f:
+ f.write("%u" % self.addr)
+ devs.remove(self)
+
+ def remove_nsim(self, nsim):
+ self.nsims.remove(nsim)
+ with open("/sys/bus/netdevsim/devices/netdevsim%u/del_port" % self.addr ,"w") as f:
+ f.write("%u" % nsim.port_index)
+
+class NetdevSim:
+ """
+ Class for netdevsim netdevice and its attributes.
+ """
- def _netdevsim_create(self):
- link = "" if self.link is None else "link " + self.link.dev['ifname']
- _, old = ip("link show")
- ip("link add sim%d {link} type netdevsim".format(link=link))
- _, new = ip("link show")
+ def __init__(self, nsimdev, port_index, ifname):
+ # In case udev renamed the netdev to according to new schema,
+ # check if the name matches the port_index.
+ nsimnamere = re.compile("eni\d+np(\d+)")
+ match = nsimnamere.match(ifname)
+ if match and int(match.groups()[0]) != port_index + 1:
+ raise Exception("netdevice name mismatches the expected one")
- for dev in new:
- f = filter(lambda x: x["ifname"] == dev["ifname"], old)
- if len(list(f)) == 0:
- return dev
+ self.nsimdev = nsimdev
+ self.port_index = port_index
+ self.ns = ""
+ self.dfs_dir = "%s/ports/%u/" % (nsimdev.dfs_dir, port_index)
+ self.dfs_refresh()
+ _, [self.dev] = ip("link show dev %s" % ifname)
- raise Exception("failed to create netdevsim device")
+ def __getitem__(self, key):
+ return self.dev[key]
def remove(self):
- devs.remove(self)
- ip("link del dev %s" % (self.dev["ifname"]), ns=self.ns)
+ self.nsimdev.remove_nsim(self)
def dfs_refresh(self):
self.dfs = DebugfsDir(self.dfs_dir)
_, data = cmd('cat %s' % (path))
return data.strip()
- def dfs_num_bound_progs(self):
- path = os.path.join(self.dev_dir, "bpf_bound_progs")
- _, progs = cmd('ls %s' % (path))
- return len(progs.split())
-
- def dfs_get_bound_progs(self, expected):
- progs = DebugfsDir(os.path.join(self.dev_dir, "bpf_bound_progs"))
- if expected is not None:
- if len(progs) != expected:
- fail(True, "%d BPF programs bound, expected %d" %
- (len(progs), expected))
- return progs
-
def wait_for_flush(self, bound=0, total=0, n_retry=20):
for i in range(n_retry):
- nbound = self.dfs_num_bound_progs()
+ nbound = self.nsimdev.dfs_num_bound_progs()
nprogs = len(bpftool_prog_list())
if nbound == bound and nprogs == total:
return
include_stderr=True)
check_no_extack(res, needle)
-def test_multi_prog(sim, obj, modename, modeid):
+def test_multi_prog(simdev, sim, obj, modename, modeid):
start_test("Test multi-attachment XDP - %s + offload..." %
(modename or "default", ))
sim.set_xdp(obj, "offload")
check_multi_basic(two_xdps)
start_test("Test multi-attachment XDP - device remove...")
- sim.remove()
+ simdev.remove()
- sim = NetdevSim()
+ simdev = NetdevSimDev()
+ sim, = simdev.nsims
sim.set_ethtool_tc_offloads(True)
- return sim
+ return [simdev, sim]
# Parse command line
parser = argparse.ArgumentParser()
bytecode = bpf_bytecode("1,6 0 0 4294967295,")
start_test("Test destruction of generic XDP...")
- sim = NetdevSim()
+ simdev = NetdevSimDev()
+ sim, = simdev.nsims
sim.set_xdp(obj, "generic")
- sim.remove()
+ simdev.remove()
bpftool_prog_list_wait(expected=0)
- sim = NetdevSim()
+ simdev = NetdevSimDev()
+ sim, = simdev.nsims
sim.tc_add_ingress()
start_test("Test TC non-offloaded...")
start_test("Test TC non-offloaded isn't getting bound...")
ret, _ = sim.cls_bpf_add_filter(obj, fail=False)
fail(ret != 0, "Software TC filter did not load")
- sim.dfs_get_bound_progs(expected=0)
+ simdev.dfs_get_bound_progs(expected=0)
sim.tc_flush_filters()
start_test("Test TC offload by default...")
ret, _ = sim.cls_bpf_add_filter(obj, fail=False)
fail(ret != 0, "Software TC filter did not load")
- sim.dfs_get_bound_progs(expected=0)
+ simdev.dfs_get_bound_progs(expected=0)
ingress = sim.tc_show_ingress(expected=1)
fltr = ingress[0]
fail(not fltr["in_hw"], "Filter not offloaded by default")
start_test("Test TC cBPF bytcode tries offload by default...")
ret, _ = sim.cls_bpf_add_filter(bytecode, fail=False)
fail(ret != 0, "Software TC filter did not load")
- sim.dfs_get_bound_progs(expected=0)
+ simdev.dfs_get_bound_progs(expected=0)
ingress = sim.tc_show_ingress(expected=1)
fltr = ingress[0]
fail(not fltr["in_hw"], "Bytecode not offloaded by default")
check_verifier_log(err, "[netdevsim] Hello from netdevsim!")
start_test("Test TC offload basics...")
- dfs = sim.dfs_get_bound_progs(expected=1)
+ dfs = simdev.dfs_get_bound_progs(expected=1)
progs = bpftool_prog_list(expected=1)
ingress = sim.tc_show_ingress(expected=1)
start_test("Test destroying device gets rid of TC filters...")
sim.cls_bpf_add_filter(obj, skip_sw=True)
- sim.remove()
+ simdev.remove()
bpftool_prog_list_wait(expected=0)
- sim = NetdevSim()
+ simdev = NetdevSimDev()
+ sim, = simdev.nsims
sim.set_ethtool_tc_offloads(True)
start_test("Test destroying device gets rid of XDP...")
sim.set_xdp(obj, "offload")
- sim.remove()
+ simdev.remove()
bpftool_prog_list_wait(expected=0)
- sim = NetdevSim()
+ simdev = NetdevSimDev()
+ sim, = simdev.nsims
sim.set_ethtool_tc_offloads(True)
start_test("Test XDP prog reporting...")
check_verifier_log(err, "[netdevsim] Hello from netdevsim!")
start_test("Test XDP offload is device bound...")
- dfs = sim.dfs_get_bound_progs(expected=1)
+ dfs = simdev.dfs_get_bound_progs(expected=1)
dprog = dfs[0]
fail(prog["id"] != link_xdp["id"], "Program IDs don't match")
bpftool_prog_list_wait(expected=0)
start_test("Test attempt to use a program for a wrong device...")
- sim2 = NetdevSim()
+ simdev2 = NetdevSimDev()
+ sim2, = simdev2.nsims
sim2.set_xdp(obj, "offload")
pin_file, pinned = pin_prog("/sys/fs/bpf/tmp")
fail=False, include_stderr=True)
fail(ret == 0, "Pinned program loaded for a different device accepted")
check_extack_nsim(err, "program bound to different dev.", args)
- sim2.remove()
+ simdev2.remove()
ret, _, err = sim.set_xdp(pinned, "offload",
fail=False, include_stderr=True)
fail(ret == 0, "Pinned program loaded for a removed device accepted")
rm(pin_file)
bpftool_prog_list_wait(expected=0)
- sim = test_multi_prog(sim, obj, "", 1)
- sim = test_multi_prog(sim, obj, "drv", 1)
- sim = test_multi_prog(sim, obj, "generic", 2)
+ simdev, sim = test_multi_prog(simdev, sim, obj, "", 1)
+ simdev, sim = test_multi_prog(simdev, sim, obj, "drv", 1)
+ simdev, sim = test_multi_prog(simdev, sim, obj, "generic", 2)
start_test("Test mixing of TC and XDP...")
sim.tc_add_ingress()
(sim['ifname'], obj)
tc_proc = cmd(cmd_line, background=True, fail=False)
# Wait for the verifier to start
- while sim.dfs_num_bound_progs() <= 2:
+ while simdev.dfs_num_bound_progs() <= 2:
pass
- sim.remove()
+ simdev.remove()
end = time.time()
ret, _ = cmd_result(tc_proc, fail=False)
time_diff = end - start
clean_up()
bpftool_prog_list_wait(expected=0)
- sim = NetdevSim()
+ simdev = NetdevSimDev()
+ sim, = simdev.nsims
map_obj = bpf_obj("sample_map_ret0.o")
start_test("Test loading program with maps...")
sim.set_xdp(map_obj, "offload", JSON=False) # map fixup msg breaks JSON
prog_file, _ = pin_prog("/sys/fs/bpf/tmp_prog")
map_file, _ = pin_map("/sys/fs/bpf/tmp_map", idx=1, expected=2)
- sim.remove()
+ simdev.remove()
start_test("Test bpftool bound info reporting (removed dev)...")
check_dev_info_removed(prog_file=prog_file, map_file=map_file)
clean_up()
bpftool_prog_list_wait(expected=0)
- sim = NetdevSim()
+ simdev = NetdevSimDev()
+ sim, = simdev.nsims
start_test("Test map update (no flags)...")
sim.set_xdp(map_obj, "offload", JSON=False) # map fixup msg breaks JSON
start_test("Test map remove...")
sim.unset_xdp("offload")
bpftool_map_list_wait(expected=0)
- sim.remove()
+ simdev.remove()
- sim = NetdevSim()
+ simdev = NetdevSimDev()
+ sim, = simdev.nsims
sim.set_xdp(map_obj, "offload", JSON=False) # map fixup msg breaks JSON
- sim.remove()
+ simdev.remove()
bpftool_map_list_wait(expected=0)
start_test("Test map creation fail path...")
- sim = NetdevSim()
+ simdev = NetdevSimDev()
+ sim, = simdev.nsims
sim.dfs["bpf_map_accept"] = "N"
ret, _ = sim.set_xdp(map_obj, "offload", JSON=False, fail=False)
fail(ret == 0,
"netdevsim didn't refuse to create a map with offload disabled")
- sim.remove()
+ simdev.remove()
start_test("Test multi-dev ASIC program reuse...")
- simA = NetdevSim()
- simB1 = NetdevSim()
- simB2 = NetdevSim(link=simB1)
- simB3 = NetdevSim(link=simB1)
+ simdevA = NetdevSimDev()
+ simA, = simdevA.nsims
+ simdevB = NetdevSimDev(3)
+ simB1, simB2, simB3 = simdevB.nsims
sims = (simA, simB1, simB2, simB3)
simB = (simB1, simB2, simB3)
progB = bpf_pinned("/sys/fs/bpf/nsimB")
simA.set_xdp(progA, "offload", JSON=False)
- for d in simB:
+ for d in simdevB.nsims:
d.set_xdp(progB, "offload", JSON=False)
start_test("Test multi-dev ASIC cross-dev replace...")
ret, _ = simA.set_xdp(progB, "offload", force=True, JSON=False, fail=False)
fail(ret == 0, "cross-ASIC program allowed")
- for d in simB:
+ for d in simdevB.nsims:
ret, _ = d.set_xdp(progA, "offload", force=True, JSON=False, fail=False)
fail(ret == 0, "cross-ASIC program allowed")
fail=False, include_stderr=True)
fail(ret == 0, "cross-ASIC program allowed")
check_extack_nsim(err, "program bound to different dev.", args)
- for d in simB:
+ for d in simdevB.nsims:
ret, _, err = d.set_xdp(progA, "offload", force=True, JSON=False,
fail=False, include_stderr=True)
fail(ret == 0, "cross-ASIC program allowed")
start_test("Test multi-dev ASIC cross-dev destruction...")
bpftool_prog_list_wait(expected=2)
- simA.remove()
+ simdevA.remove()
bpftool_prog_list_wait(expected=1)
ifnameB = bpftool("prog show %s" % (progB))[1]["dev"]["ifname"]
fail(ifnameB != simB3['ifname'], "program not bound to remaining device")
simB3.remove()
+ simdevB.remove()
bpftool_prog_list_wait(expected=0)
start_test("Test multi-dev ASIC cross-dev destruction - orphaned...")
projects / openwrt / staging / blogic.git / commitdiff