Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 254 insertions, 0 deletions

diff --git a/tools/verification/dot2/dot2c.py b/tools/verification/dot2/dot2c.py
new file mode 100644
index 000000000..87d8a1e14
--- /dev/null
+++ b/tools/verification/dot2/dot2c.py
@@ -0,0 +1,254 @@
+#!/usr/bin/env python3
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Copyright (C) 2019-2022 Red Hat, Inc. Daniel Bristot de Oliveira <bristot@kernel.org>
+#
+# dot2c: parse an automata in dot file digraph format into a C
+#
+# This program was written in the development of this paper:
+#  de Oliveira, D. B. and Cucinotta, T. and de Oliveira, R. S.
+#  "Efficient Formal Verification for the Linux Kernel." International
+#  Conference on Software Engineering and Formal Methods. Springer, Cham, 2019.
+#
+# For further information, see:
+#   Documentation/trace/rv/deterministic_automata.rst
+
+from dot2.automata import Automata
+
+class Dot2c(Automata):
+    enum_suffix = ""
+    enum_states_def = "states"
+    enum_events_def = "events"
+    struct_automaton_def = "automaton"
+    var_automaton_def = "aut"
+
+    def __init__(self, file_path):
+        super().__init__(file_path)
+        self.line_length = 100
+
+    def __buff_to_string(self, buff):
+        string = ""
+
+        for line in buff:
+            string = string + line + "\n"
+
+        # cut off the last \n
+        return string[:-1]
+
+    def __get_enum_states_content(self):
+        buff = []
+        buff.append("\t%s%s = 0," % (self.initial_state, self.enum_suffix))
+        for state in self.states:
+            if state != self.initial_state:
+                buff.append("\t%s%s," % (state, self.enum_suffix))
+        buff.append("\tstate_max%s" % (self.enum_suffix))
+
+        return buff
+
+    def get_enum_states_string(self):
+        buff = self.__get_enum_states_content()
+        return self.__buff_to_string(buff)
+
+    def format_states_enum(self):
+        buff = []
+        buff.append("enum %s {" % self.enum_states_def)
+        buff.append(self.get_enum_states_string())
+        buff.append("};\n")
+
+        return buff
+
+    def __get_enum_events_content(self):
+        buff = []
+        first = True
+        for event in self.events:
+            if first:
+                buff.append("\t%s%s = 0," % (event, self.enum_suffix))
+                first = False
+            else:
+                buff.append("\t%s%s," % (event, self.enum_suffix))
+
+        buff.append("\tevent_max%s" % self.enum_suffix)
+
+        return buff
+
+    def get_enum_events_string(self):
+        buff = self.__get_enum_events_content()
+        return self.__buff_to_string(buff)
+
+    def format_events_enum(self):
+        buff = []
+        buff.append("enum %s {" % self.enum_events_def)
+        buff.append(self.get_enum_events_string())
+        buff.append("};\n")
+
+        return buff
+
+    def get_minimun_type(self):
+        min_type = "unsigned char"
+
+        if self.states.__len__() > 255:
+            min_type = "unsigned short"
+
+        if self.states.__len__() > 65535:
+            min_type = "unsigned int"
+
+        if self.states.__len__() > 1000000:
+            raise Exception("Too many states: %d" % self.states.__len__())
+
+        return min_type
+
+    def format_automaton_definition(self):
+        min_type = self.get_minimun_type()
+        buff = []
+        buff.append("struct %s {" % self.struct_automaton_def)
+        buff.append("\tchar *state_names[state_max%s];" % (self.enum_suffix))
+        buff.append("\tchar *event_names[event_max%s];" % (self.enum_suffix))
+        buff.append("\t%s function[state_max%s][event_max%s];" % (min_type, self.enum_suffix, self.enum_suffix))
+        buff.append("\t%s initial_state;" % min_type)
+        buff.append("\tbool final_states[state_max%s];" % (self.enum_suffix))
+        buff.append("};\n")
+        return buff
+
+    def format_aut_init_header(self):
+        buff = []
+        buff.append("static const struct %s %s = {" % (self.struct_automaton_def, self.var_automaton_def))
+        return buff
+
+    def __get_string_vector_per_line_content(self, buff):
+        first = True
+        string = ""
+        for entry in buff:
+            if first:
+                string = string + "\t\t\"" + entry
+                first = False;
+            else:
+                string = string + "\",\n\t\t\"" + entry
+        string = string + "\""
+
+        return string
+
+    def get_aut_init_events_string(self):
+        return self.__get_string_vector_per_line_content(self.events)
+
+    def get_aut_init_states_string(self):
+        return self.__get_string_vector_per_line_content(self.states)
+
+    def format_aut_init_events_string(self):
+        buff = []
+        buff.append("\t.event_names = {")
+        buff.append(self.get_aut_init_events_string())
+        buff.append("\t},")
+        return buff
+
+    def format_aut_init_states_string(self):
+        buff = []
+        buff.append("\t.state_names = {")
+        buff.append(self.get_aut_init_states_string())
+        buff.append("\t},")
+
+        return buff
+
+    def __get_max_strlen_of_states(self):
+        max_state_name = max(self.states, key = len).__len__()
+        return max(max_state_name, self.invalid_state_str.__len__())
+
+    def __get_state_string_length(self):
+        maxlen = self.__get_max_strlen_of_states() + self.enum_suffix.__len__()
+        return "%" + str(maxlen) + "s"
+
+    def get_aut_init_function(self):
+        nr_states = self.states.__len__()
+        nr_events = self.events.__len__()
+        buff = []
+
+        strformat = self.__get_state_string_length()
+
+        for x in range(nr_states):
+            line = "\t\t{ "
+            for y in range(nr_events):
+                next_state = self.function[x][y]
+                if next_state != self.invalid_state_str:
+                    next_state = self.function[x][y] + self.enum_suffix
+
+                if y != nr_events-1:
+                    line = line + strformat % next_state + ", "
+                else:
+                    line = line + strformat % next_state + " },"
+            buff.append(line)
+
+        return self.__buff_to_string(buff)
+
+    def format_aut_init_function(self):
+        buff = []
+        buff.append("\t.function = {")
+        buff.append(self.get_aut_init_function())
+        buff.append("\t},")
+
+        return buff
+
+    def get_aut_init_initial_state(self):
+        return self.initial_state
+
+    def format_aut_init_initial_state(self):
+        buff = []
+        initial_state = self.get_aut_init_initial_state()
+        buff.append("\t.initial_state = " + initial_state + self.enum_suffix + ",")
+
+        return buff
+
+    def get_aut_init_final_states(self):
+        line = ""
+        first = True
+        for state in self.states:
+            if first == False:
+                line = line + ', '
+            else:
+                first = False
+
+            if self.final_states.__contains__(state):
+                line = line + '1'
+            else:
+                line = line + '0'
+        return line
+
+    def format_aut_init_final_states(self):
+       buff = []
+       buff.append("\t.final_states = { %s }," % self.get_aut_init_final_states())
+
+       return buff
+
+    def __get_automaton_initialization_footer_string(self):
+        footer = "};\n"
+        return footer
+
+    def format_aut_init_footer(self):
+        buff = []
+        buff.append(self.__get_automaton_initialization_footer_string())
+
+        return buff
+
+    def format_invalid_state(self):
+        buff = []
+        buff.append("#define %s state_max%s\n" % (self.invalid_state_str, self.enum_suffix))
+
+        return buff
+
+    def format_model(self):
+        buff = []
+        buff += self.format_states_enum()
+        buff += self.format_invalid_state()
+        buff += self.format_events_enum()
+        buff += self.format_automaton_definition()
+        buff += self.format_aut_init_header()
+        buff += self.format_aut_init_states_string()
+        buff += self.format_aut_init_events_string()
+        buff += self.format_aut_init_function()
+        buff += self.format_aut_init_initial_state()
+        buff += self.format_aut_init_final_states()
+        buff += self.format_aut_init_footer()
+
+        return buff
+
+    def print_model_classic(self):
+        buff = self.format_model()
+        print(self.__buff_to_string(buff))