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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/drivers/net/mlxsw/qos_headroom.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/drivers/net/mlxsw/qos_headroom.sh')
-rwxr-xr-xtools/testing/selftests/drivers/net/mlxsw/qos_headroom.sh380
1 files changed, 380 insertions, 0 deletions
diff --git a/tools/testing/selftests/drivers/net/mlxsw/qos_headroom.sh b/tools/testing/selftests/drivers/net/mlxsw/qos_headroom.sh
new file mode 100755
index 000000000..3569ff45f
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/mlxsw/qos_headroom.sh
@@ -0,0 +1,380 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+ALL_TESTS="
+ test_defaults
+ test_dcb_ets
+ test_mtu
+ test_pfc
+ test_int_buf
+ test_tc_priomap
+ test_tc_mtu
+ test_tc_sizes
+ test_tc_int_buf
+"
+
+lib_dir=$(dirname $0)/../../../net/forwarding
+
+NUM_NETIFS=0
+source $lib_dir/lib.sh
+source $lib_dir/devlink_lib.sh
+source qos_lib.sh
+
+swp=$NETIF_NO_CABLE
+
+cleanup()
+{
+ pre_cleanup
+}
+
+get_prio_pg()
+{
+ # Produces a string of numbers "<B0> <B1> ... <B7> ", where BX is number
+ # of buffer that priority X is mapped to.
+ dcb -j buffer show dev $swp |
+ jq -r '[.prio_buffer | .[] | tostring + " "] | add'
+}
+
+get_prio_pfc()
+{
+ # Produces a string of numbers "<P0> <P1> ... <P7> ", where PX denotes
+ # whether priority X has PFC enabled (the value is 1) or disabled (0).
+ dcb -j pfc show dev $swp |
+ jq -r '[.prio_pfc | .[] | if . then "1 " else "0 " end] | add'
+}
+
+get_prio_tc()
+{
+ # Produces a string of numbers "<T0> <T1> ... <T7> ", where TC is number
+ # of TC that priority X is mapped to.
+ dcb -j ets show dev $swp |
+ jq -r '[.prio_tc | .[] | tostring + " "] | add'
+}
+
+get_buf_size()
+{
+ local idx=$1; shift
+
+ dcb -j buffer show dev $swp | jq ".buffer_size[$idx]"
+}
+
+get_tot_size()
+{
+ dcb -j buffer show dev $swp | jq '.total_size'
+}
+
+check_prio_pg()
+{
+ local expect=$1; shift
+
+ local current=$(get_prio_pg)
+ test "$current" = "$expect"
+ check_err $? "prio2buffer is '$current', expected '$expect'"
+}
+
+check_prio_pfc()
+{
+ local expect=$1; shift
+
+ local current=$(get_prio_pfc)
+ test "$current" = "$expect"
+ check_err $? "prio PFC is '$current', expected '$expect'"
+}
+
+check_prio_tc()
+{
+ local expect=$1; shift
+
+ local current=$(get_prio_tc)
+ test "$current" = "$expect"
+ check_err $? "prio_tc is '$current', expected '$expect'"
+}
+
+__check_buf_size()
+{
+ local idx=$1; shift
+ local expr=$1; shift
+ local what=$1; shift
+
+ local current=$(get_buf_size $idx)
+ ((current $expr))
+ check_err $? "${what}buffer $idx size is '$current', expected '$expr'"
+ echo $current
+}
+
+check_buf_size()
+{
+ __check_buf_size "$@" > /dev/null
+}
+
+test_defaults()
+{
+ RET=0
+
+ check_prio_pg "0 0 0 0 0 0 0 0 "
+ check_prio_tc "0 0 0 0 0 0 0 0 "
+ check_prio_pfc "0 0 0 0 0 0 0 0 "
+
+ log_test "Default headroom configuration"
+}
+
+test_dcb_ets()
+{
+ RET=0
+
+ dcb ets set dev $swp prio-tc 0:0 1:2 2:4 3:6 4:1 5:3 6:5 7:7
+
+ check_prio_pg "0 2 4 6 1 3 5 7 "
+ check_prio_tc "0 2 4 6 1 3 5 7 "
+ check_prio_pfc "0 0 0 0 0 0 0 0 "
+
+ dcb ets set dev $swp prio-tc all:0
+
+ check_prio_pg "0 0 0 0 0 0 0 0 "
+ check_prio_tc "0 0 0 0 0 0 0 0 "
+
+ dcb buffer set dev $swp prio-buffer 0:1 1:3 2:5 3:7 4:0 5:2 6:4 7:6 2>/dev/null
+ check_fail $? "prio2buffer accepted in DCB mode"
+
+ log_test "Configuring headroom through ETS"
+}
+
+test_mtu()
+{
+ local what=$1; shift
+ local buf0size_2
+ local buf0size
+
+ RET=0
+ buf0size=$(__check_buf_size 0 "> 0")
+
+ mtu_set $swp 3000
+ buf0size_2=$(__check_buf_size 0 "> $buf0size" "MTU 3000: ")
+ mtu_restore $swp
+
+ mtu_set $swp 6000
+ check_buf_size 0 "> $buf0size_2" "MTU 6000: "
+ mtu_restore $swp
+
+ check_buf_size 0 "== $buf0size"
+
+ log_test "${what}MTU impacts buffer size"
+}
+
+test_tc_mtu()
+{
+ # In TC mode, MTU still impacts the threshold below which a buffer is
+ # not permitted to go.
+
+ tc qdisc replace dev $swp root handle 1: bfifo limit 1.5M
+ test_mtu "TC: "
+ tc qdisc delete dev $swp root
+}
+
+test_pfc()
+{
+ RET=0
+
+ dcb ets set dev $swp prio-tc all:0 5:1 6:2 7:3
+
+ local buf0size=$(get_buf_size 0)
+ local buf1size=$(get_buf_size 1)
+ local buf2size=$(get_buf_size 2)
+ local buf3size=$(get_buf_size 3)
+ check_buf_size 0 "> 0"
+ check_buf_size 1 "> 0"
+ check_buf_size 2 "> 0"
+ check_buf_size 3 "> 0"
+ check_buf_size 4 "== 0"
+ check_buf_size 5 "== 0"
+ check_buf_size 6 "== 0"
+ check_buf_size 7 "== 0"
+
+ log_test "Buffer size sans PFC"
+
+ RET=0
+
+ dcb pfc set dev $swp prio-pfc all:off 5:on 6:on 7:on delay 0
+
+ check_prio_pg "0 0 0 0 0 1 2 3 "
+ check_prio_pfc "0 0 0 0 0 1 1 1 "
+ check_buf_size 0 "== $buf0size"
+ check_buf_size 1 "> $buf1size"
+ check_buf_size 2 "> $buf2size"
+ check_buf_size 3 "> $buf3size"
+
+ local buf1size=$(get_buf_size 1)
+ check_buf_size 2 "== $buf1size"
+ check_buf_size 3 "== $buf1size"
+
+ log_test "PFC: Cable length 0"
+
+ RET=0
+
+ dcb pfc set dev $swp delay 1000
+
+ check_buf_size 0 "== $buf0size"
+ check_buf_size 1 "> $buf1size"
+ check_buf_size 2 "> $buf1size"
+ check_buf_size 3 "> $buf1size"
+
+ log_test "PFC: Cable length 1000"
+
+ RET=0
+
+ dcb pfc set dev $swp prio-pfc all:off delay 0
+ dcb ets set dev $swp prio-tc all:0
+
+ check_prio_pg "0 0 0 0 0 0 0 0 "
+ check_prio_tc "0 0 0 0 0 0 0 0 "
+ check_buf_size 0 "> 0"
+ check_buf_size 1 "== 0"
+ check_buf_size 2 "== 0"
+ check_buf_size 3 "== 0"
+ check_buf_size 4 "== 0"
+ check_buf_size 5 "== 0"
+ check_buf_size 6 "== 0"
+ check_buf_size 7 "== 0"
+
+ log_test "PFC: Restore defaults"
+}
+
+test_tc_priomap()
+{
+ RET=0
+
+ dcb ets set dev $swp prio-tc 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7
+ check_prio_pg "0 1 2 3 4 5 6 7 "
+
+ tc qdisc replace dev $swp root handle 1: bfifo limit 1.5M
+ check_prio_pg "0 0 0 0 0 0 0 0 "
+
+ dcb buffer set dev $swp prio-buffer 0:1 1:3 2:5 3:7 4:0 5:2 6:4 7:6
+ check_prio_pg "1 3 5 7 0 2 4 6 "
+
+ tc qdisc delete dev $swp root
+ check_prio_pg "0 1 2 3 4 5 6 7 "
+
+ # Clean up.
+ tc qdisc replace dev $swp root handle 1: bfifo limit 1.5M
+ dcb buffer set dev $swp prio-buffer all:0
+ tc qdisc delete dev $swp root
+ dcb ets set dev $swp prio-tc all:0
+
+ log_test "TC: priomap"
+}
+
+test_tc_sizes()
+{
+ local cell_size=$(devlink_cell_size_get)
+ local size=$((cell_size * 1000))
+
+ RET=0
+
+ dcb buffer set dev $swp buffer-size all:0 0:$size 2>/dev/null
+ check_fail $? "buffer_size should fail before qdisc is added"
+
+ tc qdisc replace dev $swp root handle 1: bfifo limit 1.5M
+
+ dcb buffer set dev $swp buffer-size all:0 0:$size
+ check_err $? "buffer_size should pass after qdisc is added"
+ check_buf_size 0 "== $size" "set size: "
+
+ mtu_set $swp 6000
+ check_buf_size 0 "== $size" "set MTU: "
+ mtu_restore $swp
+
+ dcb buffer set dev $swp buffer-size all:0
+
+ # After replacing the qdisc for the same kind, buffer_size still has to
+ # work.
+ tc qdisc replace dev $swp root handle 1: bfifo limit 1M
+
+ dcb buffer set dev $swp buffer-size all:0 0:$size
+ check_buf_size 0 "== $size" "post replace, set size: "
+
+ dcb buffer set dev $swp buffer-size all:0
+
+ # Likewise after replacing for a different kind.
+ tc qdisc replace dev $swp root handle 2: prio bands 8
+
+ dcb buffer set dev $swp buffer-size all:0 0:$size
+ check_buf_size 0 "== $size" "post replace different kind, set size: "
+
+ tc qdisc delete dev $swp root
+
+ dcb buffer set dev $swp buffer-size all:0 0:$size 2>/dev/null
+ check_fail $? "buffer_size should fail after qdisc is deleted"
+
+ log_test "TC: buffer size"
+}
+
+test_int_buf()
+{
+ local what=$1; shift
+
+ RET=0
+
+ local buf0size=$(get_buf_size 0)
+ local tot_size=$(get_tot_size)
+
+ # Size of internal buffer and buffer 9.
+ local dsize=$((tot_size - buf0size))
+
+ tc qdisc add dev $swp clsact
+ tc filter add dev $swp egress matchall skip_sw action mirred egress mirror dev $swp
+
+ local buf0size_2=$(get_buf_size 0)
+ local tot_size_2=$(get_tot_size)
+ local dsize_2=$((tot_size_2 - buf0size_2))
+
+ # Egress SPAN should have added to the "invisible" buffer configuration.
+ ((dsize_2 > dsize))
+ check_err $? "Invisible buffers account for '$dsize_2', expected '> $dsize'"
+
+ mtu_set $swp 3000
+
+ local buf0size_3=$(get_buf_size 0)
+ local tot_size_3=$(get_tot_size)
+ local dsize_3=$((tot_size_3 - buf0size_3))
+
+ # MTU change might change buffer 0, which will show at total, but the
+ # hidden buffers should stay the same size.
+ ((dsize_3 == dsize_2))
+ check_err $? "MTU change: Invisible buffers account for '$dsize_3', expected '== $dsize_2'"
+
+ mtu_restore $swp
+ tc qdisc del dev $swp clsact
+
+ # After SPAN removal, hidden buffers should be back to the original sizes.
+ local buf0size_4=$(get_buf_size 0)
+ local tot_size_4=$(get_tot_size)
+ local dsize_4=$((tot_size_4 - buf0size_4))
+ ((dsize_4 == dsize))
+ check_err $? "SPAN removed: Invisible buffers account for '$dsize_4', expected '== $dsize'"
+
+ log_test "${what}internal buffer size"
+}
+
+test_tc_int_buf()
+{
+ local cell_size=$(devlink_cell_size_get)
+ local size=$((cell_size * 1000))
+
+ tc qdisc replace dev $swp root handle 1: bfifo limit 1.5M
+ test_int_buf "TC: "
+
+ dcb buffer set dev $swp buffer-size all:0 0:$size
+ test_int_buf "TC+buffsize: "
+
+ dcb buffer set dev $swp buffer-size all:0
+ tc qdisc delete dev $swp root
+}
+
+bail_on_lldpad
+
+trap cleanup EXIT
+setup_wait
+tests_run
+
+exit $EXIT_STATUS