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, 351 insertions, 0 deletions

diff --git a/net/netfilter/ipvs/Kconfig b/net/netfilter/ipvs/Kconfig
new file mode 100644
index 000000000..271da8447
--- /dev/null
+++ b/net/netfilter/ipvs/Kconfig
@@ -0,0 +1,351 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# IP Virtual Server configuration
+#
+menuconfig IP_VS
+	tristate "IP virtual server support"
+	depends on INET && NETFILTER
+	depends on (NF_CONNTRACK || NF_CONNTRACK=n)
+	help
+	  IP Virtual Server support will let you build a high-performance
+	  virtual server based on cluster of two or more real servers. This
+	  option must be enabled for at least one of the clustered computers
+	  that will take care of intercepting incoming connections to a
+	  single IP address and scheduling them to real servers.
+
+	  Three request dispatching techniques are implemented, they are
+	  virtual server via NAT, virtual server via tunneling and virtual
+	  server via direct routing. The several scheduling algorithms can
+	  be used to choose which server the connection is directed to,
+	  thus load balancing can be achieved among the servers.  For more
+	  information and its administration program, please visit the
+	  following URL: <http://www.linuxvirtualserver.org/>.
+
+	  If you want to compile it in kernel, say Y. To compile it as a
+	  module, choose M here. If unsure, say N.
+
+if IP_VS
+
+config	IP_VS_IPV6
+	bool "IPv6 support for IPVS"
+	depends on IPV6 = y || IP_VS = IPV6
+	select NF_DEFRAG_IPV6
+	help
+	  Add IPv6 support to IPVS.
+
+	  Say Y if unsure.
+
+config	IP_VS_DEBUG
+	bool "IP virtual server debugging"
+	help
+	  Say Y here if you want to get additional messages useful in
+	  debugging the IP virtual server code. You can change the debug
+	  level in /proc/sys/net/ipv4/vs/debug_level
+
+config	IP_VS_TAB_BITS
+	int "IPVS connection table size (the Nth power of 2)"
+	range 8 20
+	default 12
+	help
+	  The IPVS connection hash table uses the chaining scheme to handle
+	  hash collisions. Using a big IPVS connection hash table will greatly
+	  reduce conflicts when there are hundreds of thousands of connections
+	  in the hash table.
+
+	  Note the table size must be power of 2. The table size will be the
+	  value of 2 to the your input number power. The number to choose is
+	  from 8 to 20, the default number is 12, which means the table size
+	  is 4096. Don't input the number too small, otherwise you will lose
+	  performance on it. You can adapt the table size yourself, according
+	  to your virtual server application. It is good to set the table size
+	  not far less than the number of connections per second multiplying
+	  average lasting time of connection in the table.  For example, your
+	  virtual server gets 200 connections per second, the connection lasts
+	  for 200 seconds in average in the connection table, the table size
+	  should be not far less than 200x200, it is good to set the table
+	  size 32768 (2**15).
+
+	  Another note that each connection occupies 128 bytes effectively and
+	  each hash entry uses 8 bytes, so you can estimate how much memory is
+	  needed for your box.
+
+	  You can overwrite this number setting conn_tab_bits module parameter
+	  or by appending ip_vs.conn_tab_bits=? to the kernel command line
+	  if IP VS was compiled built-in.
+
+comment "IPVS transport protocol load balancing support"
+
+config	IP_VS_PROTO_TCP
+	bool "TCP load balancing support"
+	help
+	  This option enables support for load balancing TCP transport
+	  protocol. Say Y if unsure.
+
+config	IP_VS_PROTO_UDP
+	bool "UDP load balancing support"
+	help
+	  This option enables support for load balancing UDP transport
+	  protocol. Say Y if unsure.
+
+config	IP_VS_PROTO_AH_ESP
+	def_bool IP_VS_PROTO_ESP || IP_VS_PROTO_AH
+
+config	IP_VS_PROTO_ESP
+	bool "ESP load balancing support"
+	help
+	  This option enables support for load balancing ESP (Encapsulation
+	  Security Payload) transport protocol. Say Y if unsure.
+
+config	IP_VS_PROTO_AH
+	bool "AH load balancing support"
+	help
+	  This option enables support for load balancing AH (Authentication
+	  Header) transport protocol. Say Y if unsure.
+
+config  IP_VS_PROTO_SCTP
+	bool "SCTP load balancing support"
+	select LIBCRC32C
+	help
+	  This option enables support for load balancing SCTP transport
+	  protocol. Say Y if unsure.
+
+comment "IPVS scheduler"
+
+config	IP_VS_RR
+	tristate "round-robin scheduling"
+	help
+	  The robin-robin scheduling algorithm simply directs network
+	  connections to different real servers in a round-robin manner.
+
+	  If you want to compile it in kernel, say Y. To compile it as a
+	  module, choose M here. If unsure, say N.
+ 
+config	IP_VS_WRR
+	tristate "weighted round-robin scheduling"
+	help
+	  The weighted robin-robin scheduling algorithm directs network
+	  connections to different real servers based on server weights
+	  in a round-robin manner. Servers with higher weights receive
+	  new connections first than those with less weights, and servers
+	  with higher weights get more connections than those with less
+	  weights and servers with equal weights get equal connections.
+
+	  If you want to compile it in kernel, say Y. To compile it as a
+	  module, choose M here. If unsure, say N.
+
+config	IP_VS_LC
+	tristate "least-connection scheduling"
+	help
+	  The least-connection scheduling algorithm directs network
+	  connections to the server with the least number of active 
+	  connections.
+
+	  If you want to compile it in kernel, say Y. To compile it as a
+	  module, choose M here. If unsure, say N.
+
+config	IP_VS_WLC
+	tristate "weighted least-connection scheduling"
+	help
+	  The weighted least-connection scheduling algorithm directs network
+	  connections to the server with the least active connections
+	  normalized by the server weight.
+
+	  If you want to compile it in kernel, say Y. To compile it as a
+	  module, choose M here. If unsure, say N.
+
+config  IP_VS_FO
+		tristate "weighted failover scheduling"
+	help
+	  The weighted failover scheduling algorithm directs network
+	  connections to the server with the highest weight that is
+	  currently available.
+
+	  If you want to compile it in kernel, say Y. To compile it as a
+	  module, choose M here. If unsure, say N.
+
+config  IP_VS_OVF
+	tristate "weighted overflow scheduling"
+	help
+	  The weighted overflow scheduling algorithm directs network
+	  connections to the server with the highest weight that is
+	  currently available and overflows to the next when active
+	  connections exceed the node's weight.
+
+	  If you want to compile it in kernel, say Y. To compile it as a
+	  module, choose M here. If unsure, say N.
+
+config	IP_VS_LBLC
+	tristate "locality-based least-connection scheduling"
+	help
+	  The locality-based least-connection scheduling algorithm is for
+	  destination IP load balancing. It is usually used in cache cluster.
+	  This algorithm usually directs packet destined for an IP address to
+	  its server if the server is alive and under load. If the server is
+	  overloaded (its active connection numbers is larger than its weight)
+	  and there is a server in its half load, then allocate the weighted
+	  least-connection server to this IP address.
+
+	  If you want to compile it in kernel, say Y. To compile it as a
+	  module, choose M here. If unsure, say N.
+
+config  IP_VS_LBLCR
+	tristate "locality-based least-connection with replication scheduling"
+	help
+	  The locality-based least-connection with replication scheduling
+	  algorithm is also for destination IP load balancing. It is 
+	  usually used in cache cluster. It differs from the LBLC scheduling
+	  as follows: the load balancer maintains mappings from a target
+	  to a set of server nodes that can serve the target. Requests for
+	  a target are assigned to the least-connection node in the target's
+	  server set. If all the node in the server set are over loaded,
+	  it picks up a least-connection node in the cluster and adds it
+	  in the sever set for the target. If the server set has not been
+	  modified for the specified time, the most loaded node is removed
+	  from the server set, in order to avoid high degree of replication.
+
+	  If you want to compile it in kernel, say Y. To compile it as a
+	  module, choose M here. If unsure, say N.
+
+config	IP_VS_DH
+	tristate "destination hashing scheduling"
+	help
+	  The destination hashing scheduling algorithm assigns network
+	  connections to the servers through looking up a statically assigned
+	  hash table by their destination IP addresses.
+
+	  If you want to compile it in kernel, say Y. To compile it as a
+	  module, choose M here. If unsure, say N.
+
+config	IP_VS_SH
+	tristate "source hashing scheduling"
+	help
+	  The source hashing scheduling algorithm assigns network
+	  connections to the servers through looking up a statically assigned
+	  hash table by their source IP addresses.
+
+	  If you want to compile it in kernel, say Y. To compile it as a
+	  module, choose M here. If unsure, say N.
+
+config	IP_VS_MH
+	tristate "maglev hashing scheduling"
+	help
+	  The maglev consistent hashing scheduling algorithm provides the
+	  Google's Maglev hashing algorithm as a IPVS scheduler. It assigns
+	  network connections to the servers through looking up a statically
+	  assigned special hash table called the lookup table. Maglev hashing
+	  is to assign a preference list of all the lookup table positions
+	  to each destination.
+
+	  Through this operation, The maglev hashing gives an almost equal
+	  share of the lookup table to each of the destinations and provides
+	  minimal disruption by using the lookup table. When the set of
+	  destinations changes, a connection will likely be sent to the same
+	  destination as it was before.
+
+	  If you want to compile it in kernel, say Y. To compile it as a
+	  module, choose M here. If unsure, say N.
+
+config	IP_VS_SED
+	tristate "shortest expected delay scheduling"
+	help
+	  The shortest expected delay scheduling algorithm assigns network
+	  connections to the server with the shortest expected delay. The 
+	  expected delay that the job will experience is (Ci + 1) / Ui if 
+	  sent to the ith server, in which Ci is the number of connections
+	  on the ith server and Ui is the fixed service rate (weight)
+	  of the ith server.
+
+	  If you want to compile it in kernel, say Y. To compile it as a
+	  module, choose M here. If unsure, say N.
+
+config	IP_VS_NQ
+	tristate "never queue scheduling"
+	help
+	  The never queue scheduling algorithm adopts a two-speed model.
+	  When there is an idle server available, the job will be sent to
+	  the idle server, instead of waiting for a fast one. When there
+	  is no idle server available, the job will be sent to the server
+	  that minimize its expected delay (The Shortest Expected Delay
+	  scheduling algorithm).
+
+	  If you want to compile it in kernel, say Y. To compile it as a
+	  module, choose M here. If unsure, say N.
+
+config	IP_VS_TWOS
+	tristate "weighted random twos choice least-connection scheduling"
+	help
+	  The weighted random twos choice least-connection scheduling
+	  algorithm picks two random real servers and directs network
+	  connections to the server with the least active connections
+	  normalized by the server weight.
+
+	  If you want to compile it in kernel, say Y. To compile it as a
+	  module, choose M here. If unsure, say N.
+
+comment 'IPVS SH scheduler'
+
+config IP_VS_SH_TAB_BITS
+	int "IPVS source hashing table size (the Nth power of 2)"
+	range 4 20
+	default 8
+	help
+	  The source hashing scheduler maps source IPs to destinations
+	  stored in a hash table. This table is tiled by each destination
+	  until all slots in the table are filled. When using weights to
+	  allow destinations to receive more connections, the table is
+	  tiled an amount proportional to the weights specified. The table
+	  needs to be large enough to effectively fit all the destinations
+	  multiplied by their respective weights.
+
+comment 'IPVS MH scheduler'
+
+config IP_VS_MH_TAB_INDEX
+	int "IPVS maglev hashing table index of size (the prime numbers)"
+	range 8 17
+	default 12
+	help
+	  The maglev hashing scheduler maps source IPs to destinations
+	  stored in a hash table. This table is assigned by a preference
+	  list of the positions to each destination until all slots in
+	  the table are filled. The index determines the prime for size of
+	  the table as 251, 509, 1021, 2039, 4093, 8191, 16381, 32749,
+	  65521 or 131071. When using weights to allow destinations to
+	  receive more connections, the table is assigned an amount
+	  proportional to the weights specified. The table needs to be large
+	  enough to effectively fit all the destinations multiplied by their
+	  respective weights.
+
+comment 'IPVS application helper'
+
+config	IP_VS_FTP
+	tristate "FTP protocol helper"
+	depends on IP_VS_PROTO_TCP && NF_CONNTRACK && NF_NAT && \
+		NF_CONNTRACK_FTP
+	select IP_VS_NFCT
+	help
+	  FTP is a protocol that transfers IP address and/or port number in
+	  the payload. In the virtual server via Network Address Translation,
+	  the IP address and port number of real servers cannot be sent to
+	  clients in ftp connections directly, so FTP protocol helper is
+	  required for tracking the connection and mangling it back to that of
+	  virtual service.
+
+	  If you want to compile it in kernel, say Y. To compile it as a
+	  module, choose M here. If unsure, say N.
+
+config	IP_VS_NFCT
+	bool "Netfilter connection tracking"
+	depends on NF_CONNTRACK
+	help
+	  The Netfilter connection tracking support allows the IPVS
+	  connection state to be exported to the Netfilter framework
+	  for filtering purposes.
+
+config	IP_VS_PE_SIP
+	tristate "SIP persistence engine"
+	depends on IP_VS_PROTO_UDP
+	depends on NF_CONNTRACK_SIP
+	help
+	  Allow persistence based on the SIP Call-ID
+
+endif # IP_VS