Merge tag 'net-next-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core & protocols:

   - Support usec resolution of TCP timestamps, enabled selectively by a
     route attribute.

   - Defer regular TCP ACK while processing socket backlog, try to send
     a cumulative ACK at the end. Increase single TCP flow performance
     on a 200Gbit NIC by 20% (100Gbit -> 120Gbit).

   - The Fair Queuing (FQ) packet scheduler:
       - add built-in 3 band prio / WRR scheduling
       - support bypass if the qdisc is mostly idle (5% speed up for TCP RR)
       - improve inactive flow reporting
       - optimize the layout of structures for better cache locality

   - Support TCP Authentication Option (RFC 5925, TCP-AO), a more modern
     replacement for the old MD5 option.

   - Add more retransmission timeout (RTO) related statistics to
     TCP_INFO.

   - Support sending fragmented skbs over vsock sockets.

   - Make sure we send SIGPIPE for vsock sockets if socket was
     shutdown().

   - Add sysctl for ignoring lower limit on lifetime in Router
     Advertisement PIO, based on an in-progress IETF draft.

   - Add sysctl to control activation of TCP ping-pong mode.

   - Add sysctl to make connection timeout in MPTCP configurable.

   - Support rcvlowat and notsent_lowat on MPTCP sockets, to help apps
     limit the number of wakeups.

   - Support netlink GET for MDB (multicast forwarding), allowing user
     space to request a single MDB entry instead of dumping the entire
     table.

   - Support selective FDB flushing in the VXLAN tunnel driver.

   - Allow limiting learned FDB entries in bridges, prevent OOM attacks.

   - Allow controlling via configfs netconsole targets which were
     created via the kernel cmdline at boot, rather than via configfs at
     runtime.

   - Support multiple PTP timestamp event queue readers with different
     filters.

   - MCTP over I3C.

  BPF:

   - Add new veth-like netdevice where BPF program defines the logic of
     the xmit routine. It can operate in L3 and L2 mode.

   - Support exceptions - allow asserting conditions which should never
     be true but are hard for the verifier to infer. With some extra
     flexibility around handling of the exit / failure:

          https://lwn.net/Articles/938435/

   - Add support for local per-cpu kptr, allow allocating and storing
     per-cpu objects in maps. Access to those objects operates on the
     value for the current CPU.

     This allows to deprecate local one-off implementations of per-CPU
     storage like BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE maps.

   - Extend cgroup BPF sockaddr hooks for UNIX sockets. The use case is
     for systemd to re-implement the LogNamespace feature which allows
     running multiple instances of systemd-journald to process the logs
     of different services.

   - Enable open-coded task_vma iteration, after maple tree conversion
     made it hard to directly walk VMAs in tracing programs.

   - Add open-coded task, css_task and css iterator support. One of the
     use cases is customizable OOM victim selection via BPF.

   - Allow source address selection with bpf_*_fib_lookup().

   - Add ability to pin BPF timer to the current CPU.

   - Prevent creation of infinite loops by combining tail calls and
     fentry/fexit programs.

   - Add missed stats for kprobes to retrieve the number of missed
     kprobe executions and subsequent executions of BPF programs.

   - Inherit system settings for CPU security mitigations.

   - Add BPF v4 CPU instruction support for arm32 and s390x.

  Changes to common code:

   - overflow: add DEFINE_FLEX() for on-stack definition of structs with
     flexible array members.

   - Process doc update with more guidance for reviewers.

  Driver API:

   - Simplify locking in WiFi (cfg80211 and mac80211 layers), use wiphy
     mutex in most places and remove a lot of smaller locks.

   - Create a common DPLL configuration API. Allow configuring and
     querying state of PLL circuits used for clock syntonization, in
     network time distribution.

   - Unify fragmented and full page allocation APIs in page pool code.
     Let drivers be ignorant of PAGE_SIZE.

   - Rework PHY state machine to avoid races with calls to phy_stop().

   - Notify DSA drivers of MAC address changes on user ports, improve
     correctness of offloads which depend on matching port MAC
     addresses.

   - Allow antenna control on injected WiFi frames.

   - Reduce the number of variants of napi_schedule().

   - Simplify error handling when composing devlink health messages.

  Misc:

   - A lot of KCSAN data race "fixes", from Eric.

   - A lot of __counted_by() annotations, from Kees.

   - A lot of strncpy -> strscpy and printf format fixes.

   - Replace master/slave terminology with conduit/user in DSA drivers.

   - Handful of KUnit tests for netdev and WiFi core.

  Removed:

   - AppleTalk COPS.

   - AppleTalk ipddp.

   - TI AR7 CPMAC Ethernet driver.

  Drivers:

   - Ethernet high-speed NICs:
      - Intel (100G, ice, idpf):
         - add a driver for the Intel E2000 IPUs
         - make CRC/FCS stripping configurable
         - cross-timestamping for E823 devices
         - basic support for E830 devices
         - use aux-bus for managing client drivers
         - i40e: report firmware versions via devlink
      - nVidia/Mellanox:
         - support 4-port NICs
         - increase max number of channels to 256
         - optimize / parallelize SF creation flow
      - Broadcom (bnxt):
         - enhance NIC temperature reporting
         - support PAM4 speeds and lane configuration
      - Marvell OcteonTX2:
         - PTP pulse-per-second output support
         - enable hardware timestamping for VFs
      - Solarflare/AMD:
         - conntrack NAT offload and offload for tunnels
      - Wangxun (ngbe/txgbe):
         - expose HW statistics
      - Pensando/AMD:
         - support PCI level reset
         - narrow down the condition under which skbs are linearized
      - Netronome/Corigine (nfp):
         - support CHACHA20-POLY1305 crypto in IPsec offload

   - Ethernet NICs embedded, slower, virtual:
      - Synopsys (stmmac):
         - add Loongson-1 SoC support
         - enable use of HW queues with no offload capabilities
         - enable PPS input support on all 5 channels
         - increase TX coalesce timer to 5ms
      - RealTek USB (r8152): improve efficiency of Rx by using GRO frags
      - xen: support SW packet timestamping
      - add drivers for implementations based on TI's PRUSS (AM64x EVM)

   - nVidia/Mellanox Ethernet datacenter switches:
      - avoid poor HW resource use on Spectrum-4 by better block
        selection for IPv6 multicast forwarding and ordering of blocks
        in ACL region

   - Ethernet embedded switches:
      - Microchip:
         - support configuring the drive strength for EMI compliance
         - ksz9477: partial ACL support
         - ksz9477: HSR offload
         - ksz9477: Wake on LAN
      - Realtek:
         - rtl8366rb: respect device tree config of the CPU port

   - Ethernet PHYs:
      - support Broadcom BCM5221 PHYs
      - TI dp83867: support hardware LED blinking

   - CAN:
      - add support for Linux-PHY based CAN transceivers
      - at91_can: clean up and use rx-offload helpers

   - WiFi:
      - MediaTek (mt76):
         - new sub-driver for mt7925 USB/PCIe devices
         - HW wireless <> Ethernet bridging in MT7988 chips
         - mt7603/mt7628 stability improvements
      - Qualcomm (ath12k):
         - WCN7850:
            - enable 320 MHz channels in 6 GHz band
            - hardware rfkill support
            - enable IEEE80211_HW_SINGLE_SCAN_ON_ALL_BANDS to
              make scan faster
            - read board data variant name from SMBIOS
        - QCN9274: mesh support
      - RealTek (rtw89):
         - TDMA-based multi-channel concurrency (MCC)
      - Silicon Labs (wfx):
         - Remain-On-Channel (ROC) support

   - Bluetooth:
      - ISO: many improvements for broadcast support
      - mark BCM4378/BCM4387 as BROKEN_LE_CODED
      - add support for QCA2066
      - btmtksdio: enable Bluetooth wakeup from suspend"

* tag 'net-next-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1816 commits)
  net: pcs: xpcs: Add 2500BASE-X case in get state for XPCS drivers
  net: bpf: Use sockopt_lock_sock() in ip_sock_set_tos()
  net: mana: Use xdp_set_features_flag instead of direct assignment
  vxlan: Cleanup IFLA_VXLAN_PORT_RANGE entry in vxlan_get_size()
  iavf: delete the iavf client interface
  iavf: add a common function for undoing the interrupt scheme
  iavf: use unregister_netdev
  iavf: rely on netdev's own registered state
  iavf: fix the waiting time for initial reset
  iavf: in iavf_down, don't queue watchdog_task if comms failed
  iavf: simplify mutex_trylock+sleep loops
  iavf: fix comments about old bit locks
  doc/netlink: Update schema to support cmd-cnt-name and cmd-max-name
  tools: ynl: introduce option to process unknown attributes or types
  ipvlan: properly track tx_errors
  netdevsim: Block until all devices are released
  nfp: using napi_build_skb() to replace build_skb()
  net: dsa: microchip: ksz9477: Fix spelling mistake "Enery" -> "Energy"
  net: dsa: microchip: Ensure Stable PME Pin State for Wake-on-LAN
  net: dsa: microchip: Refactor switch shutdown routine for WoL preparation
  ...

1 files changed, 143 insertions, 51 deletions

diff --git a/tools/testing/selftests/tc-testing/plugin-lib/nsPlugin.py b/tools/testing/selftests/tc-testing/plugin-lib/nsPlugin.py
index 9539cffa9e5e..b62429b0fcdb 100644
--- a/tools/testing/selftests/tc-testing/plugin-lib/nsPlugin.py
+++ b/tools/testing/selftests/tc-testing/plugin-lib/nsPlugin.py
@@ -3,35 +3,96 @@ import signal
 from string import Template
 import subprocess
 import time
+from multiprocessing import Pool
+from functools import cached_property
 from TdcPlugin import TdcPlugin
 
 from tdc_config import *
 
+def prepare_suite(obj, test):
+    original = obj.args.NAMES
+
+    if 'skip' in test and test['skip'] == 'yes':
+        return
+
+    if 'nsPlugin' not in test['plugins']:
+        return
+
+    shadow = {}
+    shadow['IP'] = original['IP']
+    shadow['TC'] = original['TC']
+    shadow['NS'] = '{}-{}'.format(original['NS'], test['random'])
+    shadow['DEV0'] = '{}id{}'.format(original['DEV0'], test['id'])
+    shadow['DEV1'] = '{}id{}'.format(original['DEV1'], test['id'])
+    shadow['DUMMY'] = '{}id{}'.format(original['DUMMY'], test['id'])
+    shadow['DEV2'] = original['DEV2']
+    obj.args.NAMES = shadow
+
+    if obj.args.namespace:
+        obj._ns_create()
+    else:
+        obj._ports_create()
+
+    # Make sure the netns is visible in the fs
+    while True:
+        obj._proc_check()
+        try:
+            ns = obj.args.NAMES['NS']
+            f = open('/run/netns/{}'.format(ns))
+            f.close()
+            break
+        except:
+            time.sleep(0.1)
+            continue
+
+    obj.args.NAMES = original
+
 class SubPlugin(TdcPlugin):
     def __init__(self):
         self.sub_class = 'ns/SubPlugin'
         super().__init__()
 
-    def pre_suite(self, testcount, testidlist):
-        '''run commands before test_runner goes into a test loop'''
-        super().pre_suite(testcount, testidlist)
+    def pre_suite(self, testcount, testlist):
+        from itertools import cycle
 
-        if self.args.namespace:
-            self._ns_create()
-        else:
-            self._ports_create()
+        super().pre_suite(testcount, testlist)
 
-    def post_suite(self, index):
-        '''run commands after test_runner goes into a test loop'''
-        super().post_suite(index)
+        print("Setting up namespaces and devices...")
+
+        with Pool(self.args.mp) as p:
+            it = zip(cycle([self]), testlist)
+            p.starmap(prepare_suite, it)
+
+    def pre_case(self, caseinfo, test_skip):
         if self.args.verbose:
-            print('{}.post_suite'.format(self.sub_class))
+            print('{}.pre_case'.format(self.sub_class))
+
+        if test_skip:
+            return
+
+
+    def post_case(self):
+        if self.args.verbose:
+            print('{}.post_case'.format(self.sub_class))
 
         if self.args.namespace:
             self._ns_destroy()
         else:
             self._ports_destroy()
 
+    def post_suite(self, index):
+        if self.args.verbose:
+            print('{}.post_suite'.format(self.sub_class))
+
+        # Make sure we don't leak resources
+        for f in os.listdir('/run/netns/'):
+            cmd = self._replace_keywords("$IP netns del {}".format(f))
+
+            if self.args.verbose > 3:
+                print('_exec_cmd:  command "{}"'.format(cmd))
+
+            subprocess.run(cmd, shell=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
+
     def add_args(self, parser):
         super().add_args(parser)
         self.argparser_group = self.argparser.add_argument_group(
@@ -77,18 +138,43 @@ class SubPlugin(TdcPlugin):
             print('adjust_command:  return command [{}]'.format(command))
         return command
 
-    def _ports_create(self):
-        cmd = '$IP link add $DEV0 type veth peer name $DEV1'
-        self._exec_cmd('pre', cmd)
-        cmd = '$IP link set $DEV0 up'
-        self._exec_cmd('pre', cmd)
+    def _ports_create_cmds(self):
+        cmds = []
+
+        cmds.append(self._replace_keywords('link add $DEV0 type veth peer name $DEV1'))
+        cmds.append(self._replace_keywords('link set $DEV0 up'))
+        cmds.append(self._replace_keywords('link add $DUMMY type dummy'))
         if not self.args.namespace:
-            cmd = '$IP link set $DEV1 up'
-            self._exec_cmd('pre', cmd)
+            cmds.append(self._replace_keywords('link set $DEV1 up'))
+
+        return cmds
+
+    def _ports_create(self):
+        self._exec_cmd_batched('pre', self._ports_create_cmds())
+
+    def _ports_destroy_cmd(self):
+        return self._replace_keywords('link del $DEV0')
 
     def _ports_destroy(self):
-        cmd = '$IP link del $DEV0'
-        self._exec_cmd('post', cmd)
+        self._exec_cmd('post', self._ports_destroy_cmd())
+
+    def _ns_create_cmds(self):
+        cmds = []
+
+        if self.args.namespace:
+            ns = self.args.NAMES['NS']
+
+            cmds.append(self._replace_keywords('netns add {}'.format(ns)))
+            cmds.append(self._replace_keywords('link set $DEV1 netns {}'.format(ns)))
+            cmds.append(self._replace_keywords('link set $DUMMY netns {}'.format(ns)))
+            cmds.append(self._replace_keywords('netns exec {} $IP link set $DEV1 up'.format(ns)))
+            cmds.append(self._replace_keywords('netns exec {} $IP link set $DUMMY up'.format(ns)))
+
+            if self.args.device:
+                cmds.append(self._replace_keywords('link set $DEV2 netns {}'.format(ns)))
+                cmds.append(self._replace_keywords('netns exec {} $IP link set $DEV2 up'.format(ns)))
+
+        return cmds
 
     def _ns_create(self):
         '''
@@ -96,18 +182,10 @@ class SubPlugin(TdcPlugin):
         the required network devices for it.
         '''
         self._ports_create()
-        if self.args.namespace:
-            cmd = '$IP netns add {}'.format(self.args.NAMES['NS'])
-            self._exec_cmd('pre', cmd)
-            cmd = '$IP link set $DEV1 netns {}'.format(self.args.NAMES['NS'])
-            self._exec_cmd('pre', cmd)
-            cmd = '$IP -n {} link set $DEV1 up'.format(self.args.NAMES['NS'])
-            self._exec_cmd('pre', cmd)
-            if self.args.device:
-                cmd = '$IP link set $DEV2 netns {}'.format(self.args.NAMES['NS'])
-                self._exec_cmd('pre', cmd)
-                cmd = '$IP -n {} link set $DEV2 up'.format(self.args.NAMES['NS'])
-                self._exec_cmd('pre', cmd)
+        self._exec_cmd_batched('pre', self._ns_create_cmds())
+
+    def _ns_destroy_cmd(self):
+        return self._replace_keywords('netns delete {}'.format(self.args.NAMES['NS']))
 
     def _ns_destroy(self):
         '''
@@ -115,35 +193,49 @@ class SubPlugin(TdcPlugin):
         devices as well)
         '''
         if self.args.namespace:
-            cmd = '$IP netns delete {}'.format(self.args.NAMES['NS'])
-            self._exec_cmd('post', cmd)
+            self._exec_cmd('post', self._ns_destroy_cmd())
+            self._ports_destroy()
+
+    @cached_property
+    def _proc(self):
+        ip = self._replace_keywords("$IP -b -")
+        proc = subprocess.Popen(ip,
+            shell=True,
+            stdin=subprocess.PIPE,
+            env=ENVIR)
+
+        return proc
+
+    def _proc_check(self):
+        proc = self._proc
+
+        proc.poll()
+
+        if proc.returncode is not None and proc.returncode != 0:
+            raise RuntimeError("iproute2 exited with an error code")
 
     def _exec_cmd(self, stage, command):
         '''
         Perform any required modifications on an executable command, then run
         it in a subprocess and return the results.
         '''
-        if '$' in command:
-            command = self._replace_keywords(command)
 
-        self.adjust_command(stage, command)
-        if self.args.verbose:
+        if self.args.verbose > 3:
             print('_exec_cmd:  command "{}"'.format(command))
-        proc = subprocess.Popen(command,
-            shell=True,
-            stdout=subprocess.PIPE,
-            stderr=subprocess.PIPE,
-            env=ENVIR)
-        (rawout, serr) = proc.communicate()
 
-        if proc.returncode != 0 and len(serr) > 0:
-            foutput = serr.decode("utf-8")
-        else:
-            foutput = rawout.decode("utf-8")
+        proc = self._proc
+
+        proc.stdin.write((command + '\n').encode())
+        proc.stdin.flush()
+
+        if self.args.verbose > 3:
+            print('_exec_cmd proc: {}'.format(proc))
+
+        self._proc_check()
 
-        proc.stdout.close()
-        proc.stderr.close()
-        return proc, foutput
+    def _exec_cmd_batched(self, stage, commands):
+        for cmd in commands:
+            self._exec_cmd(stage, cmd)
 
     def _replace_keywords(self, cmd):
         """