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(). ... --- tools/testing/selftests/gpio/gpio-sim.sh | 396 +++++++++++++++++++++++++++++++ 1 file changed, 396 insertions(+) create mode 100755 tools/testing/selftests/gpio/gpio-sim.sh (limited to 'tools/testing/selftests/gpio/gpio-sim.sh') diff --git a/tools/testing/selftests/gpio/gpio-sim.sh b/tools/testing/selftests/gpio/gpio-sim.sh new file mode 100755 index 000000000..9f539d454 --- /dev/null +++ b/tools/testing/selftests/gpio/gpio-sim.sh @@ -0,0 +1,396 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# Copyright (C) 2021 Bartosz Golaszewski + +BASE_DIR=`dirname $0` +CONFIGFS_DIR="/sys/kernel/config/gpio-sim" +MODULE="gpio-sim" + +fail() { + echo "$*" >&2 + echo "GPIO $MODULE test FAIL" + exit 1 +} + +skip() { + echo "$*" >&2 + echo "GPIO $MODULE test SKIP" + exit 4 +} + +remove_chip() { + local CHIP=$1 + + for FILE in $CONFIGFS_DIR/$CHIP/*; do + BANK=`basename $FILE` + if [ "$BANK" = "live" -o "$BANK" = "dev_name" ]; then + continue + fi + + LINES=`ls $CONFIGFS_DIR/$CHIP/$BANK/ | grep -E ^line` + if [ "$?" = 0 ]; then + for LINE in $LINES; do + if [ -e $CONFIGFS_DIR/$CHIP/$BANK/$LINE/hog ]; then + rmdir $CONFIGFS_DIR/$CHIP/$BANK/$LINE/hog || \ + fail "Unable to remove the hog" + fi + + rmdir $CONFIGFS_DIR/$CHIP/$BANK/$LINE || \ + fail "Unable to remove the line" + done + fi + + rmdir $CONFIGFS_DIR/$CHIP/$BANK + done + + rmdir $CONFIGFS_DIR/$CHIP || fail "Unable to remove the chip" +} + +configfs_cleanup() { + for CHIP in `ls $CONFIGFS_DIR/`; do + remove_chip $CHIP + done +} + +create_chip() { + local CHIP=$1 + + mkdir $CONFIGFS_DIR/$CHIP +} + +create_bank() { + local CHIP=$1 + local BANK=$2 + + mkdir $CONFIGFS_DIR/$CHIP/$BANK +} + +set_label() { + local CHIP=$1 + local BANK=$2 + local LABEL=$3 + + echo $LABEL > $CONFIGFS_DIR/$CHIP/$BANK/label || fail "Unable to set the chip label" +} + +set_num_lines() { + local CHIP=$1 + local BANK=$2 + local NUM_LINES=$3 + + echo $NUM_LINES > $CONFIGFS_DIR/$CHIP/$BANK/num_lines || \ + fail "Unable to set the number of lines" +} + +set_line_name() { + local CHIP=$1 + local BANK=$2 + local OFFSET=$3 + local NAME=$4 + local LINE_DIR=$CONFIGFS_DIR/$CHIP/$BANK/line$OFFSET + + test -d $LINE_DIR || mkdir $LINE_DIR + echo $NAME > $LINE_DIR/name || fail "Unable to set the line name" +} + +enable_chip() { + local CHIP=$1 + + echo 1 > $CONFIGFS_DIR/$CHIP/live || fail "Unable to enable the chip" +} + +disable_chip() { + local CHIP=$1 + + echo 0 > $CONFIGFS_DIR/$CHIP/live || fail "Unable to disable the chip" +} + +configfs_chip_name() { + local CHIP=$1 + local BANK=$2 + + cat $CONFIGFS_DIR/$CHIP/$BANK/chip_name 2> /dev/null || \ + fail "unable to read the chip name from configfs" +} + +configfs_dev_name() { + local CHIP=$1 + + cat $CONFIGFS_DIR/$CHIP/dev_name 2> /dev/null || \ + fail "unable to read the device name from configfs" +} + +get_chip_num_lines() { + local CHIP=$1 + local BANK=$2 + + $BASE_DIR/gpio-chip-info /dev/`configfs_chip_name $CHIP $BANK` num-lines || \ + fail "unable to read the number of lines from the character device" +} + +get_chip_label() { + local CHIP=$1 + local BANK=$2 + + $BASE_DIR/gpio-chip-info /dev/`configfs_chip_name $CHIP $BANK` label || \ + fail "unable to read the chip label from the character device" +} + +get_line_name() { + local CHIP=$1 + local BANK=$2 + local OFFSET=$3 + + $BASE_DIR/gpio-line-name /dev/`configfs_chip_name $CHIP $BANK` $OFFSET || \ + fail "unable to read the line name from the character device" +} + +sysfs_set_pull() { + local DEV=$1 + local BANK=$2 + local OFFSET=$3 + local PULL=$4 + local DEVNAME=`configfs_dev_name $DEV` + local CHIPNAME=`configfs_chip_name $DEV $BANK` + local SYSFSPATH="/sys/devices/platform/$DEVNAME/$CHIPNAME/sim_gpio$OFFSET/pull" + + echo $PULL > $SYSFSPATH || fail "Unable to set line pull in sysfs" +} + +# Load the gpio-sim module. This will pull in configfs if needed too. +modprobe gpio-sim || skip "unable to load the gpio-sim module" +# Make sure configfs is mounted at /sys/kernel/config. Wait a bit if needed. +for IDX in `seq 5`; do + if [ "$IDX" -eq "5" ]; then + skip "configfs not mounted at /sys/kernel/config" + fi + + mountpoint -q /sys/kernel/config && break + sleep 0.1 +done +# If the module was already loaded: remove all previous chips +configfs_cleanup + +trap "exit 1" SIGTERM SIGINT +trap configfs_cleanup EXIT + +echo "1. chip_name and dev_name attributes" + +echo "1.1. Chip name is communicated to user" +create_chip chip +create_bank chip bank +enable_chip chip +test -n `cat $CONFIGFS_DIR/chip/bank/chip_name` || fail "chip_name doesn't work" +remove_chip chip + +echo "1.2. chip_name returns 'none' if the chip is still pending" +create_chip chip +create_bank chip bank +test "`cat $CONFIGFS_DIR/chip/bank/chip_name`" = "none" || \ + fail "chip_name doesn't return 'none' for a pending chip" +remove_chip chip + +echo "1.3. Device name is communicated to user" +create_chip chip +create_bank chip bank +enable_chip chip +test -n `cat $CONFIGFS_DIR/chip/dev_name` || fail "dev_name doesn't work" +remove_chip chip + +echo "2. Creating and configuring simulated chips" + +echo "2.1. Default number of lines is 1" +create_chip chip +create_bank chip bank +enable_chip chip +test "`get_chip_num_lines chip bank`" = "1" || fail "default number of lines is not 1" +remove_chip chip + +echo "2.2. Number of lines can be specified" +create_chip chip +create_bank chip bank +set_num_lines chip bank 16 +enable_chip chip +test "`get_chip_num_lines chip bank`" = "16" || fail "number of lines is not 16" +remove_chip chip + +echo "2.3. Label can be set" +create_chip chip +create_bank chip bank +set_label chip bank foobar +enable_chip chip +test "`get_chip_label chip bank`" = "foobar" || fail "label is incorrect" +remove_chip chip + +echo "2.4. Label can be left empty" +create_chip chip +create_bank chip bank +enable_chip chip +test -z "`cat $CONFIGFS_DIR/chip/bank/label`" || fail "label is not empty" +remove_chip chip + +echo "2.5. Line names can be configured" +create_chip chip +create_bank chip bank +set_num_lines chip bank 16 +set_line_name chip bank 0 foo +set_line_name chip bank 2 bar +enable_chip chip +test "`get_line_name chip bank 0`" = "foo" || fail "line name is incorrect" +test "`get_line_name chip bank 2`" = "bar" || fail "line name is incorrect" +remove_chip chip + +echo "2.6. Line config can remain unused if offset is greater than number of lines" +create_chip chip +create_bank chip bank +set_num_lines chip bank 2 +set_line_name chip bank 5 foobar +enable_chip chip +test "`get_line_name chip bank 0`" = "" || fail "line name is incorrect" +test "`get_line_name chip bank 1`" = "" || fail "line name is incorrect" +remove_chip chip + +echo "2.7. Line configfs directory names are sanitized" +create_chip chip +create_bank chip bank +mkdir $CONFIGFS_DIR/chip/bank/line12foobar 2> /dev/null && \ + fail "invalid configfs line name accepted" +mkdir $CONFIGFS_DIR/chip/bank/line_no_offset 2> /dev/null && \ + fail "invalid configfs line name accepted" +remove_chip chip + +echo "2.8. Multiple chips can be created" +CHIPS="chip0 chip1 chip2" +for CHIP in $CHIPS; do + create_chip $CHIP + create_bank $CHIP bank + enable_chip $CHIP +done +for CHIP in $CHIPS; do + remove_chip $CHIP +done + +echo "2.9. Can't modify settings when chip is live" +create_chip chip +create_bank chip bank +enable_chip chip +echo foobar > $CONFIGFS_DIR/chip/bank/label 2> /dev/null && \ + fail "Setting label of a live chip should fail" +echo 8 > $CONFIGFS_DIR/chip/bank/num_lines 2> /dev/null && \ + fail "Setting number of lines of a live chip should fail" +remove_chip chip + +echo "2.10. Can't create line items when chip is live" +create_chip chip +create_bank chip bank +enable_chip chip +mkdir $CONFIGFS_DIR/chip/bank/line0 2> /dev/null && fail "Creating line item should fail" +remove_chip chip + +echo "2.11. Probe errors are propagated to user-space" +create_chip chip +create_bank chip bank +set_num_lines chip bank 99999 +echo 1 > $CONFIGFS_DIR/chip/live 2> /dev/null && fail "Probe error was not propagated" +remove_chip chip + +echo "2.12. Cannot enable a chip without any GPIO banks" +create_chip chip +echo 1 > $CONFIGFS_DIR/chip/live 2> /dev/null && fail "Chip enabled without any GPIO banks" +remove_chip chip + +echo "2.13. Duplicate chip labels are not allowed" +create_chip chip +create_bank chip bank0 +set_label chip bank0 foobar +create_bank chip bank1 +set_label chip bank1 foobar +echo 1 > $CONFIGFS_DIR/chip/live 2> /dev/null && fail "Duplicate chip labels were not rejected" +remove_chip chip + +echo "2.14. Lines can be hogged" +create_chip chip +create_bank chip bank +set_num_lines chip bank 8 +mkdir -p $CONFIGFS_DIR/chip/bank/line4/hog +enable_chip chip +$BASE_DIR/gpio-mockup-cdev -s 1 /dev/`configfs_chip_name chip bank` 4 2> /dev/null && \ + fail "Setting the value of a hogged line shouldn't succeed" +remove_chip chip + +echo "3. Controlling simulated chips" + +echo "3.1. Pull can be set over sysfs" +create_chip chip +create_bank chip bank +set_num_lines chip bank 8 +enable_chip chip +sysfs_set_pull chip bank 0 pull-up +$BASE_DIR/gpio-mockup-cdev /dev/`configfs_chip_name chip bank` 0 +test "$?" = "1" || fail "pull set incorrectly" +sysfs_set_pull chip bank 0 pull-down +$BASE_DIR/gpio-mockup-cdev /dev/`configfs_chip_name chip bank` 1 +test "$?" = "0" || fail "pull set incorrectly" +remove_chip chip + +echo "3.2. Pull can be read from sysfs" +create_chip chip +create_bank chip bank +set_num_lines chip bank 8 +enable_chip chip +DEVNAME=`configfs_dev_name chip` +CHIPNAME=`configfs_chip_name chip bank` +SYSFS_PATH=/sys/devices/platform/$DEVNAME/$CHIPNAME/sim_gpio0/pull +test `cat $SYSFS_PATH` = "pull-down" || fail "reading the pull failed" +sysfs_set_pull chip bank 0 pull-up +test `cat $SYSFS_PATH` = "pull-up" || fail "reading the pull failed" +remove_chip chip + +echo "3.3. Incorrect input in sysfs is rejected" +create_chip chip +create_bank chip bank +set_num_lines chip bank 8 +enable_chip chip +DEVNAME=`configfs_dev_name chip` +CHIPNAME=`configfs_chip_name chip bank` +SYSFS_PATH="/sys/devices/platform/$DEVNAME/$CHIPNAME/sim_gpio0/pull" +echo foobar > $SYSFS_PATH 2> /dev/null && fail "invalid input not detected" +remove_chip chip + +echo "3.4. Can't write to value" +create_chip chip +create_bank chip bank +enable_chip chip +DEVNAME=`configfs_dev_name chip` +CHIPNAME=`configfs_chip_name chip bank` +SYSFS_PATH="/sys/devices/platform/$DEVNAME/$CHIPNAME/sim_gpio0/value" +echo 1 > $SYSFS_PATH 2> /dev/null && fail "writing to 'value' succeeded unexpectedly" +remove_chip chip + +echo "4. Simulated GPIO chips are functional" + +echo "4.1. Values can be read from sysfs" +create_chip chip +create_bank chip bank +set_num_lines chip bank 8 +enable_chip chip +DEVNAME=`configfs_dev_name chip` +CHIPNAME=`configfs_chip_name chip bank` +SYSFS_PATH="/sys/devices/platform/$DEVNAME/$CHIPNAME/sim_gpio0/value" +test `cat $SYSFS_PATH` = "0" || fail "incorrect value read from sysfs" +$BASE_DIR/gpio-mockup-cdev -s 1 /dev/`configfs_chip_name chip bank` 0 & +sleep 0.1 # FIXME Any better way? +test `cat $SYSFS_PATH` = "1" || fail "incorrect value read from sysfs" +kill $! +remove_chip chip + +echo "4.2. Bias settings work correctly" +create_chip chip +create_bank chip bank +set_num_lines chip bank 8 +enable_chip chip +$BASE_DIR/gpio-mockup-cdev -b pull-up /dev/`configfs_chip_name chip bank` 0 +test `cat $SYSFS_PATH` = "1" || fail "bias setting does not work" +remove_chip chip + +echo "GPIO $MODULE test PASS" -- cgit v1.2.3