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, 292 insertions, 0 deletions

diff --git a/tools/testing/selftests/net/fib_nexthop_multiprefix.sh b/tools/testing/selftests/net/fib_nexthop_multiprefix.sh
new file mode 100755
index 000000000..51df5e305
--- /dev/null
+++ b/tools/testing/selftests/net/fib_nexthop_multiprefix.sh
@@ -0,0 +1,292 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# Validate cached routes in fib{6}_nh that is used by multiple prefixes.
+# Validate a different # exception is generated in h0 for each remote host.
+#
+#               h1
+#            /
+#    h0 - r1 -  h2
+#            \
+#               h3
+#
+# routing in h0 to hN is done with nexthop objects.
+
+PAUSE_ON_FAIL=no
+VERBOSE=0
+
+which ping6 > /dev/null 2>&1 && ping6=$(which ping6) || ping6=$(which ping)
+
+################################################################################
+# helpers
+
+log_test()
+{
+	local rc=$1
+	local expected=$2
+	local msg="$3"
+
+	if [ ${rc} -eq ${expected} ]; then
+		printf "TEST: %-60s  [ OK ]\n" "${msg}"
+		nsuccess=$((nsuccess+1))
+	else
+		ret=1
+		nfail=$((nfail+1))
+		printf "TEST: %-60s  [FAIL]\n" "${msg}"
+		if [ "${PAUSE_ON_FAIL}" = "yes" ]; then
+			echo
+			echo "hit enter to continue, 'q' to quit"
+			read a
+			[ "$a" = "q" ] && exit 1
+		fi
+	fi
+
+	[ "$VERBOSE" = "1" ] && echo
+}
+
+run_cmd()
+{
+	local cmd="$*"
+	local out
+	local rc
+
+	if [ "$VERBOSE" = "1" ]; then
+		echo "COMMAND: $cmd"
+	fi
+
+	out=$(eval $cmd 2>&1)
+	rc=$?
+	if [ "$VERBOSE" = "1" -a -n "$out" ]; then
+		echo "$out"
+	fi
+
+	[ "$VERBOSE" = "1" ] && echo
+
+	return $rc
+}
+
+################################################################################
+# config
+
+create_ns()
+{
+	local ns=${1}
+
+	ip netns del ${ns} 2>/dev/null
+
+	ip netns add ${ns}
+	ip -netns ${ns} addr add 127.0.0.1/8 dev lo
+	ip -netns ${ns} link set lo up
+
+	ip netns exec ${ns} sysctl -q -w net.ipv6.conf.all.keep_addr_on_down=1
+	case ${ns} in
+	h*)
+		ip netns exec $ns sysctl -q -w net.ipv6.conf.all.forwarding=0
+		;;
+	r*)
+		ip netns exec $ns sysctl -q -w net.ipv4.ip_forward=1
+		ip netns exec $ns sysctl -q -w net.ipv6.conf.all.forwarding=1
+		;;
+	esac
+}
+
+setup()
+{
+	local ns
+	local i
+
+	#set -e
+
+	for ns in h0 r1 h1 h2 h3
+	do
+		create_ns ${ns}
+	done
+
+	#
+	# create interconnects
+	#
+
+	for i in 0 1 2 3
+	do
+		ip -netns h${i} li add eth0 type veth peer name r1h${i}
+		ip -netns h${i} li set eth0 up
+		ip -netns h${i} li set r1h${i} netns r1 name eth${i} up
+
+		ip -netns h${i}    addr add dev eth0 172.16.10${i}.1/24
+		ip -netns h${i} -6 addr add dev eth0 2001:db8:10${i}::1/64
+		ip -netns r1    addr add dev eth${i} 172.16.10${i}.254/24
+		ip -netns r1 -6 addr add dev eth${i} 2001:db8:10${i}::64/64
+	done
+
+	ip -netns h0 nexthop add id 4 via 172.16.100.254 dev eth0
+	ip -netns h0 nexthop add id 6 via 2001:db8:100::64 dev eth0
+
+	# routing from h0 to h1-h3 and back
+	for i in 1 2 3
+	do
+		ip -netns h0    ro add 172.16.10${i}.0/24 nhid 4
+		ip -netns h${i} ro add 172.16.100.0/24 via 172.16.10${i}.254
+
+		ip -netns h0    -6 ro add 2001:db8:10${i}::/64 nhid 6
+		ip -netns h${i} -6 ro add 2001:db8:100::/64 via 2001:db8:10${i}::64
+	done
+
+	if [ "$VERBOSE" = "1" ]; then
+		echo
+		echo "host 1 config"
+		ip -netns h0 li sh
+		ip -netns h0 ro sh
+		ip -netns h0 -6 ro sh
+	fi
+
+	#set +e
+}
+
+cleanup()
+{
+	for n in h0 r1 h1 h2 h3
+	do
+		ip netns del ${n} 2>/dev/null
+	done
+}
+
+change_mtu()
+{
+	local hostid=$1
+	local mtu=$2
+
+	run_cmd ip -netns h${hostid} li set eth0 mtu ${mtu}
+	run_cmd ip -netns r1 li set eth${hostid} mtu ${mtu}
+}
+
+################################################################################
+# validate exceptions
+
+validate_v4_exception()
+{
+	local i=$1
+	local mtu=$2
+	local ping_sz=$3
+	local dst="172.16.10${i}.1"
+	local h0=172.16.100.1
+	local r1=172.16.100.254
+	local rc
+
+	if [ ${ping_sz} != "0" ]; then
+		run_cmd ip netns exec h0 ping -s ${ping_sz} -c5 -w5 ${dst}
+	fi
+
+	if [ "$VERBOSE" = "1" ]; then
+		echo "Route get"
+		ip -netns h0 ro get ${dst}
+		echo "Searching for:"
+		echo "    cache .* mtu ${mtu}"
+		echo
+	fi
+
+	ip -netns h0 ro get ${dst} | \
+	grep -q "cache .* mtu ${mtu}"
+	rc=$?
+
+	log_test $rc 0 "IPv4: host 0 to host ${i}, mtu ${mtu}"
+}
+
+validate_v6_exception()
+{
+	local i=$1
+	local mtu=$2
+	local ping_sz=$3
+	local dst="2001:db8:10${i}::1"
+	local h0=2001:db8:100::1
+	local r1=2001:db8:100::64
+	local rc
+
+	if [ ${ping_sz} != "0" ]; then
+		run_cmd ip netns exec h0 ${ping6} -s ${ping_sz} -c5 -w5 ${dst}
+	fi
+
+	if [ "$VERBOSE" = "1" ]; then
+		echo "Route get"
+		ip -netns h0 -6 ro get ${dst}
+		echo "Searching for:"
+		echo "    ${dst} from :: via ${r1} dev eth0 src ${h0} .* mtu ${mtu}"
+		echo
+	fi
+
+	ip -netns h0 -6 ro get ${dst} | \
+	grep -q "${dst} from :: via ${r1} dev eth0 src ${h0} .* mtu ${mtu}"
+	rc=$?
+
+	log_test $rc 0 "IPv6: host 0 to host ${i}, mtu ${mtu}"
+}
+
+################################################################################
+# main
+
+while getopts :pv o
+do
+	case $o in
+		p) PAUSE_ON_FAIL=yes;;
+		v) VERBOSE=1;;
+	esac
+done
+
+cleanup
+setup
+sleep 2
+
+cpus=$(cat  /sys/devices/system/cpu/online)
+cpus="$(seq ${cpus/-/ })"
+ret=0
+for i in 1 2 3
+do
+	# generate a cached route per-cpu
+	for c in ${cpus}; do
+		run_cmd taskset -c ${c} ip netns exec h0 ping -c1 -w1 172.16.10${i}.1
+		[ $? -ne 0 ] && printf "\nERROR: ping to h${i} failed\n" && ret=1
+
+		run_cmd taskset -c ${c} ip netns exec h0 ${ping6} -c1 -w1 2001:db8:10${i}::1
+		[ $? -ne 0 ] && printf "\nERROR: ping6 to h${i} failed\n" && ret=1
+
+		[ $ret -ne 0 ] && break
+	done
+	[ $ret -ne 0 ] && break
+done
+
+if [ $ret -eq 0 ]; then
+	# generate different exceptions in h0 for h1, h2 and h3
+	change_mtu 1 1300
+	validate_v4_exception 1 1300 1350
+	validate_v6_exception 1 1300 1350
+	echo
+
+	change_mtu 2 1350
+	validate_v4_exception 2 1350 1400
+	validate_v6_exception 2 1350 1400
+	echo
+
+	change_mtu 3 1400
+	validate_v4_exception 3 1400 1450
+	validate_v6_exception 3 1400 1450
+	echo
+
+	validate_v4_exception 1 1300 0
+	validate_v6_exception 1 1300 0
+	echo
+
+	validate_v4_exception 2 1350 0
+	validate_v6_exception 2 1350 0
+	echo
+
+	validate_v4_exception 3 1400 0
+	validate_v6_exception 3 1400 0
+
+	# targeted deletes to trigger cleanup paths in kernel
+	ip -netns h0 ro del 172.16.102.0/24 nhid 4
+	ip -netns h0 -6 ro del 2001:db8:102::/64 nhid 6
+
+	ip -netns h0 nexthop del id 4
+	ip -netns h0 nexthop del id 6
+fi
+
+cleanup