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, 343 insertions, 0 deletions

diff --git a/net/ipv6/Kconfig b/net/ipv6/Kconfig
new file mode 100644
index 000000000..658bfed1d
--- /dev/null
+++ b/net/ipv6/Kconfig
@@ -0,0 +1,343 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# IPv6 configuration
+#
+
+#   IPv6 as module will cause a CRASH if you try to unload it
+menuconfig IPV6
+	tristate "The IPv6 protocol"
+	default y
+	select CRYPTO_LIB_SHA1
+	help
+	  Support for IP version 6 (IPv6).
+
+	  For general information about IPv6, see
+	  <https://en.wikipedia.org/wiki/IPv6>.
+	  For specific information about IPv6 under Linux, see
+	  Documentation/networking/ipv6.rst and read the HOWTO at
+	  <https://www.tldp.org/HOWTO/Linux+IPv6-HOWTO/>
+
+	  To compile this protocol support as a module, choose M here: the
+	  module will be called ipv6.
+
+if IPV6
+
+config IPV6_ROUTER_PREF
+	bool "IPv6: Router Preference (RFC 4191) support"
+	help
+	  Router Preference is an optional extension to the Router
+	  Advertisement message which improves the ability of hosts
+	  to pick an appropriate router, especially when the hosts
+	  are placed in a multi-homed network.
+
+	  If unsure, say N.
+
+config IPV6_ROUTE_INFO
+	bool "IPv6: Route Information (RFC 4191) support"
+	depends on IPV6_ROUTER_PREF
+	help
+	  Support of Route Information.
+
+	  If unsure, say N.
+
+config IPV6_OPTIMISTIC_DAD
+	bool "IPv6: Enable RFC 4429 Optimistic DAD"
+	help
+	  Support for optimistic Duplicate Address Detection. It allows for
+	  autoconfigured addresses to be used more quickly.
+
+	  If unsure, say N.
+
+config INET6_AH
+	tristate "IPv6: AH transformation"
+	select XFRM_AH
+	help
+	  Support for IPsec AH (Authentication Header).
+
+	  AH can be used with various authentication algorithms.  Besides
+	  enabling AH support itself, this option enables the generic
+	  implementations of the algorithms that RFC 8221 lists as MUST be
+	  implemented.  If you need any other algorithms, you'll need to enable
+	  them in the crypto API.  You should also enable accelerated
+	  implementations of any needed algorithms when available.
+
+	  If unsure, say Y.
+
+config INET6_ESP
+	tristate "IPv6: ESP transformation"
+	select XFRM_ESP
+	help
+	  Support for IPsec ESP (Encapsulating Security Payload).
+
+	  ESP can be used with various encryption and authentication algorithms.
+	  Besides enabling ESP support itself, this option enables the generic
+	  implementations of the algorithms that RFC 8221 lists as MUST be
+	  implemented.  If you need any other algorithms, you'll need to enable
+	  them in the crypto API.  You should also enable accelerated
+	  implementations of any needed algorithms when available.
+
+	  If unsure, say Y.
+
+config INET6_ESP_OFFLOAD
+	tristate "IPv6: ESP transformation offload"
+	depends on INET6_ESP
+	select XFRM_OFFLOAD
+	default n
+	help
+	  Support for ESP transformation offload. This makes sense
+	  only if this system really does IPsec and want to do it
+	  with high throughput. A typical desktop system does not
+	  need it, even if it does IPsec.
+
+	  If unsure, say N.
+
+config INET6_ESPINTCP
+	bool "IPv6: ESP in TCP encapsulation (RFC 8229)"
+	depends on XFRM && INET6_ESP
+	select STREAM_PARSER
+	select NET_SOCK_MSG
+	select XFRM_ESPINTCP
+	help
+	  Support for RFC 8229 encapsulation of ESP and IKE over
+	  TCP/IPv6 sockets.
+
+	  If unsure, say N.
+
+config INET6_IPCOMP
+	tristate "IPv6: IPComp transformation"
+	select INET6_XFRM_TUNNEL
+	select XFRM_IPCOMP
+	help
+	  Support for IP Payload Compression Protocol (IPComp) (RFC3173),
+	  typically needed for IPsec.
+
+	  If unsure, say Y.
+
+config IPV6_MIP6
+	tristate "IPv6: Mobility"
+	select XFRM
+	help
+	  Support for IPv6 Mobility described in RFC 3775.
+
+	  If unsure, say N.
+
+config IPV6_ILA
+	tristate "IPv6: Identifier Locator Addressing (ILA)"
+	depends on NETFILTER
+	select DST_CACHE
+	select LWTUNNEL
+	help
+	  Support for IPv6 Identifier Locator Addressing (ILA).
+
+	  ILA is a mechanism to do network virtualization without
+	  encapsulation. The basic concept of ILA is that we split an
+	  IPv6 address into a 64 bit locator and 64 bit identifier. The
+	  identifier is the identity of an entity in communication
+	  ("who") and the locator expresses the location of the
+	  entity ("where").
+
+	  ILA can be configured using the "encap ila" option with
+	  "ip -6 route" command. ILA is described in
+	  https://tools.ietf.org/html/draft-herbert-nvo3-ila-00.
+
+	  If unsure, say N.
+
+config INET6_XFRM_TUNNEL
+	tristate
+	select INET6_TUNNEL
+	default n
+
+config INET6_TUNNEL
+	tristate
+	default n
+
+config IPV6_VTI
+tristate "Virtual (secure) IPv6: tunneling"
+	select IPV6_TUNNEL
+	select NET_IP_TUNNEL
+	select XFRM
+	help
+	Tunneling means encapsulating data of one protocol type within
+	another protocol and sending it over a channel that understands the
+	encapsulating protocol. This can be used with xfrm mode tunnel to give
+	the notion of a secure tunnel for IPSEC and then use routing protocol
+	on top.
+
+config IPV6_SIT
+	tristate "IPv6: IPv6-in-IPv4 tunnel (SIT driver)"
+	select INET_TUNNEL
+	select NET_IP_TUNNEL
+	select IPV6_NDISC_NODETYPE
+	default y
+	help
+	  Tunneling means encapsulating data of one protocol type within
+	  another protocol and sending it over a channel that understands the
+	  encapsulating protocol. This driver implements encapsulation of IPv6
+	  into IPv4 packets. This is useful if you want to connect two IPv6
+	  networks over an IPv4-only path.
+
+	  Saying M here will produce a module called sit. If unsure, say Y.
+
+config IPV6_SIT_6RD
+	bool "IPv6: IPv6 Rapid Deployment (6RD)"
+	depends on IPV6_SIT
+	default n
+	help
+	  IPv6 Rapid Deployment (6rd; draft-ietf-softwire-ipv6-6rd) builds upon
+	  mechanisms of 6to4 (RFC3056) to enable a service provider to rapidly
+	  deploy IPv6 unicast service to IPv4 sites to which it provides
+	  customer premise equipment.  Like 6to4, it utilizes stateless IPv6 in
+	  IPv4 encapsulation in order to transit IPv4-only network
+	  infrastructure.  Unlike 6to4, a 6rd service provider uses an IPv6
+	  prefix of its own in place of the fixed 6to4 prefix.
+
+	  With this option enabled, the SIT driver offers 6rd functionality by
+	  providing additional ioctl API to configure the IPv6 Prefix for in
+	  stead of static 2002::/16 for 6to4.
+
+	  If unsure, say N.
+
+config IPV6_NDISC_NODETYPE
+	bool
+
+config IPV6_TUNNEL
+	tristate "IPv6: IP-in-IPv6 tunnel (RFC2473)"
+	select INET6_TUNNEL
+	select DST_CACHE
+	select GRO_CELLS
+	help
+	  Support for IPv6-in-IPv6 and IPv4-in-IPv6 tunnels described in
+	  RFC 2473.
+
+	  If unsure, say N.
+
+config IPV6_GRE
+	tristate "IPv6: GRE tunnel"
+	select IPV6_TUNNEL
+	select NET_IP_TUNNEL
+	depends on NET_IPGRE_DEMUX
+	help
+	  Tunneling means encapsulating data of one protocol type within
+	  another protocol and sending it over a channel that understands the
+	  encapsulating protocol. This particular tunneling driver implements
+	  GRE (Generic Routing Encapsulation) and at this time allows
+	  encapsulating of IPv4 or IPv6 over existing IPv6 infrastructure.
+	  This driver is useful if the other endpoint is a Cisco router: Cisco
+	  likes GRE much better than the other Linux tunneling driver ("IP
+	  tunneling" above). In addition, GRE allows multicast redistribution
+	  through the tunnel.
+
+	  Saying M here will produce a module called ip6_gre. If unsure, say N.
+
+config IPV6_FOU
+	tristate
+	default NET_FOU && IPV6
+
+config IPV6_FOU_TUNNEL
+	tristate
+	default NET_FOU_IP_TUNNELS && IPV6_FOU
+	select IPV6_TUNNEL
+
+config IPV6_MULTIPLE_TABLES
+	bool "IPv6: Multiple Routing Tables"
+	select FIB_RULES
+	help
+	  Support multiple routing tables.
+
+config IPV6_SUBTREES
+	bool "IPv6: source address based routing"
+	depends on IPV6_MULTIPLE_TABLES
+	help
+	  Enable routing by source address or prefix.
+
+	  The destination address is still the primary routing key, so mixing
+	  normal and source prefix specific routes in the same routing table
+	  may sometimes lead to unintended routing behavior.  This can be
+	  avoided by defining different routing tables for the normal and
+	  source prefix specific routes.
+
+	  If unsure, say N.
+
+config IPV6_MROUTE
+	bool "IPv6: multicast routing"
+	depends on IPV6
+	select IP_MROUTE_COMMON
+	help
+	  Support for IPv6 multicast forwarding.
+	  If unsure, say N.
+
+config IPV6_MROUTE_MULTIPLE_TABLES
+	bool "IPv6: multicast policy routing"
+	depends on IPV6_MROUTE
+	select FIB_RULES
+	help
+	  Normally, a multicast router runs a userspace daemon and decides
+	  what to do with a multicast packet based on the source and
+	  destination addresses. If you say Y here, the multicast router
+	  will also be able to take interfaces and packet marks into
+	  account and run multiple instances of userspace daemons
+	  simultaneously, each one handling a single table.
+
+	  If unsure, say N.
+
+config IPV6_PIMSM_V2
+	bool "IPv6: PIM-SM version 2 support"
+	depends on IPV6_MROUTE
+	help
+	  Support for IPv6 PIM multicast routing protocol PIM-SMv2.
+	  If unsure, say N.
+
+config IPV6_SEG6_LWTUNNEL
+	bool "IPv6: Segment Routing Header encapsulation support"
+	depends on IPV6
+	select LWTUNNEL
+	select DST_CACHE
+	select IPV6_MULTIPLE_TABLES
+	help
+	  Support for encapsulation of packets within an outer IPv6
+	  header and a Segment Routing Header using the lightweight
+	  tunnels mechanism. Also enable support for advanced local
+	  processing of SRv6 packets based on their active segment.
+
+	  If unsure, say N.
+
+config IPV6_SEG6_HMAC
+	bool "IPv6: Segment Routing HMAC support"
+	depends on IPV6
+	select CRYPTO
+	select CRYPTO_HMAC
+	select CRYPTO_SHA1
+	select CRYPTO_SHA256
+	help
+	  Support for HMAC signature generation and verification
+	  of SR-enabled packets.
+
+	  If unsure, say N.
+
+config IPV6_SEG6_BPF
+	def_bool y
+	depends on IPV6_SEG6_LWTUNNEL
+	depends on IPV6 = y
+
+config IPV6_RPL_LWTUNNEL
+	bool "IPv6: RPL Source Routing Header support"
+	depends on IPV6
+	select LWTUNNEL
+	help
+	  Support for RFC6554 RPL Source Routing Header using the lightweight
+	  tunnels mechanism.
+
+	  If unsure, say N.
+
+config IPV6_IOAM6_LWTUNNEL
+	bool "IPv6: IOAM Pre-allocated Trace insertion support"
+	depends on IPV6
+	select LWTUNNEL
+	select DST_CACHE
+	help
+	  Support for the insertion of IOAM Pre-allocated Trace
+	  Header using the lightweight tunnels mechanism.
+
+	  If unsure, say N.
+
+endif # IPV6