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authorLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
committerLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
commit5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch)
treecc5c2d0a898769fd59549594fedb3ee6f84e59a0 /tools/testing/selftests/net/arp_ndisc_untracked_subnets.sh
downloadlinux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz
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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(). ...
Diffstat (limited to 'tools/testing/selftests/net/arp_ndisc_untracked_subnets.sh')
-rwxr-xr-xtools/testing/selftests/net/arp_ndisc_untracked_subnets.sh308
1 files changed, 308 insertions, 0 deletions
diff --git a/tools/testing/selftests/net/arp_ndisc_untracked_subnets.sh b/tools/testing/selftests/net/arp_ndisc_untracked_subnets.sh
new file mode 100755
index 000000000..c899b446a
--- /dev/null
+++ b/tools/testing/selftests/net/arp_ndisc_untracked_subnets.sh
@@ -0,0 +1,308 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# 2 namespaces: one host and one router. Use arping from the host to send a
+# garp to the router. Router accepts or ignores based on its arp_accept
+# or accept_untracked_na configuration.
+
+TESTS="arp ndisc"
+
+ROUTER_NS="ns-router"
+ROUTER_NS_V6="ns-router-v6"
+ROUTER_INTF="veth-router"
+ROUTER_ADDR="10.0.10.1"
+ROUTER_ADDR_V6="2001:db8:abcd:0012::1"
+
+HOST_NS="ns-host"
+HOST_NS_V6="ns-host-v6"
+HOST_INTF="veth-host"
+HOST_ADDR="10.0.10.2"
+HOST_ADDR_V6="2001:db8:abcd:0012::2"
+
+SUBNET_WIDTH=24
+PREFIX_WIDTH_V6=64
+
+cleanup() {
+ ip netns del ${HOST_NS}
+ ip netns del ${ROUTER_NS}
+}
+
+cleanup_v6() {
+ ip netns del ${HOST_NS_V6}
+ ip netns del ${ROUTER_NS_V6}
+}
+
+setup() {
+ set -e
+ local arp_accept=$1
+
+ # Set up two namespaces
+ ip netns add ${ROUTER_NS}
+ ip netns add ${HOST_NS}
+
+ # Set up interfaces veth0 and veth1, which are pairs in separate
+ # namespaces. veth0 is veth-router, veth1 is veth-host.
+ # first, set up the inteface's link to the namespace
+ # then, set the interface "up"
+ ip netns exec ${ROUTER_NS} ip link add name ${ROUTER_INTF} \
+ type veth peer name ${HOST_INTF}
+
+ ip netns exec ${ROUTER_NS} ip link set dev ${ROUTER_INTF} up
+ ip netns exec ${ROUTER_NS} ip link set dev ${HOST_INTF} netns ${HOST_NS}
+
+ ip netns exec ${HOST_NS} ip link set dev ${HOST_INTF} up
+ ip netns exec ${ROUTER_NS} ip addr add ${ROUTER_ADDR}/${SUBNET_WIDTH} \
+ dev ${ROUTER_INTF}
+
+ ip netns exec ${HOST_NS} ip addr add ${HOST_ADDR}/${SUBNET_WIDTH} \
+ dev ${HOST_INTF}
+ ip netns exec ${HOST_NS} ip route add default via ${HOST_ADDR} \
+ dev ${HOST_INTF}
+ ip netns exec ${ROUTER_NS} ip route add default via ${ROUTER_ADDR} \
+ dev ${ROUTER_INTF}
+
+ ROUTER_CONF=net.ipv4.conf.${ROUTER_INTF}
+ ip netns exec ${ROUTER_NS} sysctl -w \
+ ${ROUTER_CONF}.arp_accept=${arp_accept} >/dev/null 2>&1
+ set +e
+}
+
+setup_v6() {
+ set -e
+ local accept_untracked_na=$1
+
+ # Set up two namespaces
+ ip netns add ${ROUTER_NS_V6}
+ ip netns add ${HOST_NS_V6}
+
+ # Set up interfaces veth0 and veth1, which are pairs in separate
+ # namespaces. veth0 is veth-router, veth1 is veth-host.
+ # first, set up the inteface's link to the namespace
+ # then, set the interface "up"
+ ip -6 -netns ${ROUTER_NS_V6} link add name ${ROUTER_INTF} \
+ type veth peer name ${HOST_INTF}
+
+ ip -6 -netns ${ROUTER_NS_V6} link set dev ${ROUTER_INTF} up
+ ip -6 -netns ${ROUTER_NS_V6} link set dev ${HOST_INTF} netns \
+ ${HOST_NS_V6}
+
+ ip -6 -netns ${HOST_NS_V6} link set dev ${HOST_INTF} up
+ ip -6 -netns ${ROUTER_NS_V6} addr add \
+ ${ROUTER_ADDR_V6}/${PREFIX_WIDTH_V6} dev ${ROUTER_INTF} nodad
+
+ HOST_CONF=net.ipv6.conf.${HOST_INTF}
+ ip netns exec ${HOST_NS_V6} sysctl -qw ${HOST_CONF}.ndisc_notify=1
+ ip netns exec ${HOST_NS_V6} sysctl -qw ${HOST_CONF}.disable_ipv6=0
+ ip -6 -netns ${HOST_NS_V6} addr add ${HOST_ADDR_V6}/${PREFIX_WIDTH_V6} \
+ dev ${HOST_INTF}
+
+ ROUTER_CONF=net.ipv6.conf.${ROUTER_INTF}
+
+ ip netns exec ${ROUTER_NS_V6} sysctl -w \
+ ${ROUTER_CONF}.forwarding=1 >/dev/null 2>&1
+ ip netns exec ${ROUTER_NS_V6} sysctl -w \
+ ${ROUTER_CONF}.drop_unsolicited_na=0 >/dev/null 2>&1
+ ip netns exec ${ROUTER_NS_V6} sysctl -w \
+ ${ROUTER_CONF}.accept_untracked_na=${accept_untracked_na} \
+ >/dev/null 2>&1
+ set +e
+}
+
+verify_arp() {
+ local arp_accept=$1
+ local same_subnet=$2
+
+ neigh_show_output=$(ip netns exec ${ROUTER_NS} ip neigh get \
+ ${HOST_ADDR} dev ${ROUTER_INTF} 2>/dev/null)
+
+ if [ ${arp_accept} -eq 1 ]; then
+ # Neighbor entries expected
+ [[ ${neigh_show_output} ]]
+ elif [ ${arp_accept} -eq 2 ]; then
+ if [ ${same_subnet} -eq 1 ]; then
+ # Neighbor entries expected
+ [[ ${neigh_show_output} ]]
+ else
+ [[ -z "${neigh_show_output}" ]]
+ fi
+ else
+ [[ -z "${neigh_show_output}" ]]
+ fi
+ }
+
+arp_test_gratuitous() {
+ set -e
+ local arp_accept=$1
+ local same_subnet=$2
+
+ if [ ${arp_accept} -eq 2 ]; then
+ test_msg=("test_arp: "
+ "accept_arp=$1 "
+ "same_subnet=$2")
+ if [ ${same_subnet} -eq 0 ]; then
+ HOST_ADDR=10.0.11.3
+ else
+ HOST_ADDR=10.0.10.3
+ fi
+ else
+ test_msg=("test_arp: "
+ "accept_arp=$1")
+ fi
+ # Supply arp_accept option to set up which sets it in sysctl
+ setup ${arp_accept}
+ ip netns exec ${HOST_NS} arping -A -U ${HOST_ADDR} -c1 2>&1 >/dev/null
+
+ if verify_arp $1 $2; then
+ printf " TEST: %-60s [ OK ]\n" "${test_msg[*]}"
+ else
+ printf " TEST: %-60s [FAIL]\n" "${test_msg[*]}"
+ fi
+ cleanup
+ set +e
+}
+
+arp_test_gratuitous_combinations() {
+ arp_test_gratuitous 0
+ arp_test_gratuitous 1
+ arp_test_gratuitous 2 0 # Second entry indicates subnet or not
+ arp_test_gratuitous 2 1
+}
+
+cleanup_tcpdump() {
+ set -e
+ [[ ! -z ${tcpdump_stdout} ]] && rm -f ${tcpdump_stdout}
+ [[ ! -z ${tcpdump_stderr} ]] && rm -f ${tcpdump_stderr}
+ tcpdump_stdout=
+ tcpdump_stderr=
+ set +e
+}
+
+start_tcpdump() {
+ set -e
+ tcpdump_stdout=`mktemp`
+ tcpdump_stderr=`mktemp`
+ ip netns exec ${ROUTER_NS_V6} timeout 15s \
+ tcpdump --immediate-mode -tpni ${ROUTER_INTF} -c 1 \
+ "icmp6 && icmp6[0] == 136 && src ${HOST_ADDR_V6}" \
+ > ${tcpdump_stdout} 2> /dev/null
+ set +e
+}
+
+verify_ndisc() {
+ local accept_untracked_na=$1
+ local same_subnet=$2
+
+ neigh_show_output=$(ip -6 -netns ${ROUTER_NS_V6} neigh show \
+ to ${HOST_ADDR_V6} dev ${ROUTER_INTF} nud stale)
+
+ if [ ${accept_untracked_na} -eq 1 ]; then
+ # Neighbour entry expected to be present
+ [[ ${neigh_show_output} ]]
+ elif [ ${accept_untracked_na} -eq 2 ]; then
+ if [ ${same_subnet} -eq 1 ]; then
+ [[ ${neigh_show_output} ]]
+ else
+ [[ -z "${neigh_show_output}" ]]
+ fi
+ else
+ # Neighbour entry expected to be absent for all other cases
+ [[ -z "${neigh_show_output}" ]]
+ fi
+}
+
+ndisc_test_untracked_advertisements() {
+ set -e
+ test_msg=("test_ndisc: "
+ "accept_untracked_na=$1")
+
+ local accept_untracked_na=$1
+ local same_subnet=$2
+ if [ ${accept_untracked_na} -eq 2 ]; then
+ test_msg=("test_ndisc: "
+ "accept_untracked_na=$1 "
+ "same_subnet=$2")
+ if [ ${same_subnet} -eq 0 ]; then
+ # Not same subnet
+ HOST_ADDR_V6=2000:db8:abcd:0013::4
+ else
+ HOST_ADDR_V6=2001:db8:abcd:0012::3
+ fi
+ fi
+ setup_v6 $1 $2
+ start_tcpdump
+
+ if verify_ndisc $1 $2; then
+ printf " TEST: %-60s [ OK ]\n" "${test_msg[*]}"
+ else
+ printf " TEST: %-60s [FAIL]\n" "${test_msg[*]}"
+ fi
+
+ cleanup_tcpdump
+ cleanup_v6
+ set +e
+}
+
+ndisc_test_untracked_combinations() {
+ ndisc_test_untracked_advertisements 0
+ ndisc_test_untracked_advertisements 1
+ ndisc_test_untracked_advertisements 2 0
+ ndisc_test_untracked_advertisements 2 1
+}
+
+################################################################################
+# usage
+
+usage()
+{
+ cat <<EOF
+usage: ${0##*/} OPTS
+
+ -t <test> Test(s) to run (default: all)
+ (options: $TESTS)
+EOF
+}
+
+################################################################################
+# main
+
+while getopts ":t:h" opt; do
+ case $opt in
+ t) TESTS=$OPTARG;;
+ h) usage; exit 0;;
+ *) usage; exit 1;;
+ esac
+done
+
+if [ "$(id -u)" -ne 0 ];then
+ echo "SKIP: Need root privileges"
+ exit $ksft_skip;
+fi
+
+if [ ! -x "$(command -v ip)" ]; then
+ echo "SKIP: Could not run test without ip tool"
+ exit $ksft_skip
+fi
+
+if [ ! -x "$(command -v tcpdump)" ]; then
+ echo "SKIP: Could not run test without tcpdump tool"
+ exit $ksft_skip
+fi
+
+if [ ! -x "$(command -v arping)" ]; then
+ echo "SKIP: Could not run test without arping tool"
+ exit $ksft_skip
+fi
+
+# start clean
+cleanup &> /dev/null
+cleanup_v6 &> /dev/null
+
+for t in $TESTS
+do
+ case $t in
+ arp_test_gratuitous_combinations|arp) arp_test_gratuitous_combinations;;
+ ndisc_test_untracked_combinations|ndisc) \
+ ndisc_test_untracked_combinations;;
+ help) echo "Test names: $TESTS"; exit 0;;
+esac
+done