From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 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(). ... --- .../net/forwarding/ip6gre_custom_multipath_hash.sh | 466 +++++++++++++++++++++ 1 file changed, 466 insertions(+) create mode 100755 tools/testing/selftests/net/forwarding/ip6gre_custom_multipath_hash.sh (limited to 'tools/testing/selftests/net/forwarding/ip6gre_custom_multipath_hash.sh') diff --git a/tools/testing/selftests/net/forwarding/ip6gre_custom_multipath_hash.sh b/tools/testing/selftests/net/forwarding/ip6gre_custom_multipath_hash.sh new file mode 100755 index 000000000..d40183b4e --- /dev/null +++ b/tools/testing/selftests/net/forwarding/ip6gre_custom_multipath_hash.sh @@ -0,0 +1,466 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 +# +# Test traffic distribution when there are multiple paths between an IPv6 GRE +# tunnel. The tunnel carries IPv4 and IPv6 traffic between multiple hosts. +# Multiple routes are in the underlay network. With the default multipath +# policy, SW2 will only look at the outer IP addresses, hence only a single +# route would be used. +# +# +--------------------------------+ +# | H1 | +# | $h1 + | +# | 198.51.100.{2-253}/24 | | +# | 2001:db8:1::{2-fd}/64 | | +# +-------------------------|------+ +# | +# +-------------------------|-------------------+ +# | SW1 | | +# | $ol1 + | +# | 198.51.100.1/24 | +# | 2001:db8:1::1/64 | +# | | +# |+ g1 (ip6gre) | +# | loc=2001:db8:3::1 | +# | rem=2001:db8:3::2 -. | +# | tos=inherit | | +# | v | +# | + $ul1 | +# | | 2001:db8:10::1/64 | +# +---------------------|-----------------------+ +# | +# +---------------------|-----------------------+ +# | SW2 | | +# | $ul21 + | +# | 2001:db8:10::2/64 | | +# | | | +# ! __________________+___ | +# | / \ | +# | | | | +# | + $ul22.111 (vlan) + $ul22.222 (vlan) | +# | | 2001:db8:11::1/64 | 2001:db8:12::1/64 | +# | | | | +# +--|----------------------|-------------------+ +# | | +# +--|----------------------|-------------------+ +# | | | | +# | + $ul32.111 (vlan) + $ul32.222 (vlan) | +# | | 2001:db8:11::2/64 | 2001:db8:12::2/64 | +# | | | | +# | \__________________+___/ | +# | | | +# | | | +# | $ul31 + | +# | 2001:db8:13::1/64 | SW3 | +# +---------------------|-----------------------+ +# | +# +---------------------|-----------------------+ +# | + $ul4 | +# | ^ 2001:db8:13::2/64 | +# | | | +# |+ g2 (ip6gre) | | +# | loc=2001:db8:3::2 | | +# | rem=2001:db8:3::1 -' | +# | tos=inherit | +# | | +# | $ol4 + | +# | 203.0.113.1/24 | | +# | 2001:db8:2::1/64 | SW4 | +# +-------------------------|-------------------+ +# | +# +-------------------------|------+ +# | | | +# | $h2 + | +# | 203.0.113.{2-253}/24 | +# | 2001:db8:2::{2-fd}/64 H2 | +# +--------------------------------+ + +ALL_TESTS=" + ping_ipv4 + ping_ipv6 + custom_hash +" + +NUM_NETIFS=10 +source lib.sh + +h1_create() +{ + simple_if_init $h1 198.51.100.2/24 2001:db8:1::2/64 + ip route add vrf v$h1 default via 198.51.100.1 dev $h1 + ip -6 route add vrf v$h1 default via 2001:db8:1::1 dev $h1 +} + +h1_destroy() +{ + ip -6 route del vrf v$h1 default + ip route del vrf v$h1 default + simple_if_fini $h1 198.51.100.2/24 2001:db8:1::2/64 +} + +sw1_create() +{ + simple_if_init $ol1 198.51.100.1/24 2001:db8:1::1/64 + __simple_if_init $ul1 v$ol1 2001:db8:10::1/64 + + tunnel_create g1 ip6gre 2001:db8:3::1 2001:db8:3::2 tos inherit \ + dev v$ol1 + __simple_if_init g1 v$ol1 2001:db8:3::1/128 + ip route add vrf v$ol1 2001:db8:3::2/128 via 2001:db8:10::2 + + ip route add vrf v$ol1 203.0.113.0/24 dev g1 + ip -6 route add vrf v$ol1 2001:db8:2::/64 dev g1 +} + +sw1_destroy() +{ + ip -6 route del vrf v$ol1 2001:db8:2::/64 + ip route del vrf v$ol1 203.0.113.0/24 + + ip route del vrf v$ol1 2001:db8:3::2/128 + __simple_if_fini g1 2001:db8:3::1/128 + tunnel_destroy g1 + + __simple_if_fini $ul1 2001:db8:10::1/64 + simple_if_fini $ol1 198.51.100.1/24 2001:db8:1::1/64 +} + +sw2_create() +{ + simple_if_init $ul21 2001:db8:10::2/64 + __simple_if_init $ul22 v$ul21 + vlan_create $ul22 111 v$ul21 2001:db8:11::1/64 + vlan_create $ul22 222 v$ul21 2001:db8:12::1/64 + + ip -6 route add vrf v$ul21 2001:db8:3::1/128 via 2001:db8:10::1 + ip -6 route add vrf v$ul21 2001:db8:3::2/128 \ + nexthop via 2001:db8:11::2 \ + nexthop via 2001:db8:12::2 +} + +sw2_destroy() +{ + ip -6 route del vrf v$ul21 2001:db8:3::2/128 + ip -6 route del vrf v$ul21 2001:db8:3::1/128 + + vlan_destroy $ul22 222 + vlan_destroy $ul22 111 + __simple_if_fini $ul22 + simple_if_fini $ul21 2001:db8:10::2/64 +} + +sw3_create() +{ + simple_if_init $ul31 2001:db8:13::1/64 + __simple_if_init $ul32 v$ul31 + vlan_create $ul32 111 v$ul31 2001:db8:11::2/64 + vlan_create $ul32 222 v$ul31 2001:db8:12::2/64 + + ip -6 route add vrf v$ul31 2001:db8:3::2/128 via 2001:db8:13::2 + ip -6 route add vrf v$ul31 2001:db8:3::1/128 \ + nexthop via 2001:db8:11::1 \ + nexthop via 2001:db8:12::1 + + tc qdisc add dev $ul32 clsact + tc filter add dev $ul32 ingress pref 111 prot 802.1Q \ + flower vlan_id 111 action pass + tc filter add dev $ul32 ingress pref 222 prot 802.1Q \ + flower vlan_id 222 action pass +} + +sw3_destroy() +{ + tc qdisc del dev $ul32 clsact + + ip -6 route del vrf v$ul31 2001:db8:3::1/128 + ip -6 route del vrf v$ul31 2001:db8:3::2/128 + + vlan_destroy $ul32 222 + vlan_destroy $ul32 111 + __simple_if_fini $ul32 + simple_if_fini $ul31 2001:db8:13::1/64 +} + +sw4_create() +{ + simple_if_init $ol4 203.0.113.1/24 2001:db8:2::1/64 + __simple_if_init $ul4 v$ol4 2001:db8:13::2/64 + + tunnel_create g2 ip6gre 2001:db8:3::2 2001:db8:3::1 tos inherit \ + dev v$ol4 + __simple_if_init g2 v$ol4 2001:db8:3::2/128 + ip -6 route add vrf v$ol4 2001:db8:3::1/128 via 2001:db8:13::1 + + ip route add vrf v$ol4 198.51.100.0/24 dev g2 + ip -6 route add vrf v$ol4 2001:db8:1::/64 dev g2 +} + +sw4_destroy() +{ + ip -6 route del vrf v$ol4 2001:db8:1::/64 + ip route del vrf v$ol4 198.51.100.0/24 + + ip -6 route del vrf v$ol4 2001:db8:3::1/128 + __simple_if_fini g2 2001:db8:3::2/128 + tunnel_destroy g2 + + __simple_if_fini $ul4 2001:db8:13::2/64 + simple_if_fini $ol4 203.0.113.1/24 2001:db8:2::1/64 +} + +h2_create() +{ + simple_if_init $h2 203.0.113.2/24 2001:db8:2::2/64 + ip route add vrf v$h2 default via 203.0.113.1 dev $h2 + ip -6 route add vrf v$h2 default via 2001:db8:2::1 dev $h2 +} + +h2_destroy() +{ + ip -6 route del vrf v$h2 default + ip route del vrf v$h2 default + simple_if_fini $h2 203.0.113.2/24 2001:db8:2::2/64 +} + +setup_prepare() +{ + h1=${NETIFS[p1]} + + ol1=${NETIFS[p2]} + ul1=${NETIFS[p3]} + + ul21=${NETIFS[p4]} + ul22=${NETIFS[p5]} + + ul32=${NETIFS[p6]} + ul31=${NETIFS[p7]} + + ul4=${NETIFS[p8]} + ol4=${NETIFS[p9]} + + h2=${NETIFS[p10]} + + vrf_prepare + h1_create + sw1_create + sw2_create + sw3_create + sw4_create + h2_create + + forwarding_enable +} + +cleanup() +{ + pre_cleanup + + forwarding_restore + + h2_destroy + sw4_destroy + sw3_destroy + sw2_destroy + sw1_destroy + h1_destroy + vrf_cleanup +} + +ping_ipv4() +{ + ping_test $h1 203.0.113.2 +} + +ping_ipv6() +{ + ping6_test $h1 2001:db8:2::2 +} + +send_src_ipv4() +{ + ip vrf exec v$h1 $MZ $h1 -q -p 64 \ + -A "198.51.100.2-198.51.100.253" -B 203.0.113.2 \ + -d 1msec -c 50 -t udp "sp=20000,dp=30000" +} + +send_dst_ipv4() +{ + ip vrf exec v$h1 $MZ $h1 -q -p 64 \ + -A 198.51.100.2 -B "203.0.113.2-203.0.113.253" \ + -d 1msec -c 50 -t udp "sp=20000,dp=30000" +} + +send_src_udp4() +{ + ip vrf exec v$h1 $MZ $h1 -q -p 64 \ + -A 198.51.100.2 -B 203.0.113.2 \ + -d 1msec -t udp "sp=0-32768,dp=30000" +} + +send_dst_udp4() +{ + ip vrf exec v$h1 $MZ $h1 -q -p 64 \ + -A 198.51.100.2 -B 203.0.113.2 \ + -d 1msec -t udp "sp=20000,dp=0-32768" +} + +send_src_ipv6() +{ + ip vrf exec v$h1 $MZ -6 $h1 -q -p 64 \ + -A "2001:db8:1::2-2001:db8:1::fd" -B 2001:db8:2::2 \ + -d 1msec -c 50 -t udp "sp=20000,dp=30000" +} + +send_dst_ipv6() +{ + ip vrf exec v$h1 $MZ -6 $h1 -q -p 64 \ + -A 2001:db8:1::2 -B "2001:db8:2::2-2001:db8:2::fd" \ + -d 1msec -c 50 -t udp "sp=20000,dp=30000" +} + +send_flowlabel() +{ + # Generate 16384 echo requests, each with a random flow label. + for _ in $(seq 1 16384); do + ip vrf exec v$h1 \ + $PING6 2001:db8:2::2 -F 0 -c 1 -q >/dev/null 2>&1 + done +} + +send_src_udp6() +{ + ip vrf exec v$h1 $MZ -6 $h1 -q -p 64 \ + -A 2001:db8:1::2 -B 2001:db8:2::2 \ + -d 1msec -t udp "sp=0-32768,dp=30000" +} + +send_dst_udp6() +{ + ip vrf exec v$h1 $MZ -6 $h1 -q -p 64 \ + -A 2001:db8:1::2 -B 2001:db8:2::2 \ + -d 1msec -t udp "sp=20000,dp=0-32768" +} + +custom_hash_test() +{ + local field="$1"; shift + local balanced="$1"; shift + local send_flows="$@" + + RET=0 + + local t0_111=$(tc_rule_stats_get $ul32 111 ingress) + local t0_222=$(tc_rule_stats_get $ul32 222 ingress) + + $send_flows + + local t1_111=$(tc_rule_stats_get $ul32 111 ingress) + local t1_222=$(tc_rule_stats_get $ul32 222 ingress) + + local d111=$((t1_111 - t0_111)) + local d222=$((t1_222 - t0_222)) + + local diff=$((d222 - d111)) + local sum=$((d111 + d222)) + + local pct=$(echo "$diff / $sum * 100" | bc -l) + local is_balanced=$(echo "-20 <= $pct && $pct <= 20" | bc) + + [[ ( $is_balanced -eq 1 && $balanced == "balanced" ) || + ( $is_balanced -eq 0 && $balanced == "unbalanced" ) ]] + check_err $? "Expected traffic to be $balanced, but it is not" + + log_test "Multipath hash field: $field ($balanced)" + log_info "Packets sent on path1 / path2: $d111 / $d222" +} + +custom_hash_v4() +{ + log_info "Running IPv4 overlay custom multipath hash tests" + + # Prevent the neighbour table from overflowing, as different neighbour + # entries will be created on $ol4 when using different destination IPs. + sysctl_set net.ipv4.neigh.default.gc_thresh1 1024 + sysctl_set net.ipv4.neigh.default.gc_thresh2 1024 + sysctl_set net.ipv4.neigh.default.gc_thresh3 1024 + + sysctl_set net.ipv6.fib_multipath_hash_fields 0x0040 + custom_hash_test "Inner source IP" "balanced" send_src_ipv4 + custom_hash_test "Inner source IP" "unbalanced" send_dst_ipv4 + + sysctl_set net.ipv6.fib_multipath_hash_fields 0x0080 + custom_hash_test "Inner destination IP" "balanced" send_dst_ipv4 + custom_hash_test "Inner destination IP" "unbalanced" send_src_ipv4 + + sysctl_set net.ipv6.fib_multipath_hash_fields 0x0400 + custom_hash_test "Inner source port" "balanced" send_src_udp4 + custom_hash_test "Inner source port" "unbalanced" send_dst_udp4 + + sysctl_set net.ipv6.fib_multipath_hash_fields 0x0800 + custom_hash_test "Inner destination port" "balanced" send_dst_udp4 + custom_hash_test "Inner destination port" "unbalanced" send_src_udp4 + + sysctl_restore net.ipv4.neigh.default.gc_thresh3 + sysctl_restore net.ipv4.neigh.default.gc_thresh2 + sysctl_restore net.ipv4.neigh.default.gc_thresh1 +} + +custom_hash_v6() +{ + log_info "Running IPv6 overlay custom multipath hash tests" + + # Prevent the neighbour table from overflowing, as different neighbour + # entries will be created on $ol4 when using different destination IPs. + sysctl_set net.ipv6.neigh.default.gc_thresh1 1024 + sysctl_set net.ipv6.neigh.default.gc_thresh2 1024 + sysctl_set net.ipv6.neigh.default.gc_thresh3 1024 + + sysctl_set net.ipv6.fib_multipath_hash_fields 0x0040 + custom_hash_test "Inner source IP" "balanced" send_src_ipv6 + custom_hash_test "Inner source IP" "unbalanced" send_dst_ipv6 + + sysctl_set net.ipv6.fib_multipath_hash_fields 0x0080 + custom_hash_test "Inner destination IP" "balanced" send_dst_ipv6 + custom_hash_test "Inner destination IP" "unbalanced" send_src_ipv6 + + sysctl_set net.ipv6.fib_multipath_hash_fields 0x0200 + custom_hash_test "Inner flowlabel" "balanced" send_flowlabel + custom_hash_test "Inner flowlabel" "unbalanced" send_src_ipv6 + + sysctl_set net.ipv6.fib_multipath_hash_fields 0x0400 + custom_hash_test "Inner source port" "balanced" send_src_udp6 + custom_hash_test "Inner source port" "unbalanced" send_dst_udp6 + + sysctl_set net.ipv6.fib_multipath_hash_fields 0x0800 + custom_hash_test "Inner destination port" "balanced" send_dst_udp6 + custom_hash_test "Inner destination port" "unbalanced" send_src_udp6 + + sysctl_restore net.ipv6.neigh.default.gc_thresh3 + sysctl_restore net.ipv6.neigh.default.gc_thresh2 + sysctl_restore net.ipv6.neigh.default.gc_thresh1 +} + +custom_hash() +{ + # Test that when the hash policy is set to custom, traffic is + # distributed only according to the fields set in the + # fib_multipath_hash_fields sysctl. + # + # Each time set a different field and make sure traffic is only + # distributed when the field is changed in the packet stream. + + sysctl_set net.ipv6.fib_multipath_hash_policy 3 + + custom_hash_v4 + custom_hash_v6 + + sysctl_restore net.ipv6.fib_multipath_hash_policy +} + +trap cleanup EXIT + +setup_prepare +setup_wait +tests_run + +exit $EXIT_STATUS -- cgit v1.2.3