January 2025 - Linux-kselftest-mirror

[PATCH net v2] bonding: Correctly support GSO ESP offload

by Cosmin Ratiu

V2: Removed unnecessary Change-Id Changed "bond->features" to "bond_dev->features" in commit message.

8 months, 3 weeks

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[PATCH net] bonding: Correctly support GSO ESP offload

by Cosmin Ratiu

The referenced fix is incomplete. It correctly computes bond_dev->gso_partial_features across slaves, but unfortunately netdev_fix_features discards gso_partial_features from the feature set if NETIF_F_GSO_PARTIAL isn't set in bond->features. This is visible with ethtool -k bond0 | grep esp: tx-esp-segmentation: off [requested on] esp-hw-offload: on esp-tx-csum-hw-offload: on This patch reworks the bonding GSO offload support by: - making aggregating gso_partial_features across slaves similar to the other feature sets (this part is a no-op). - adding NETIF_F_GSO_PARTIAL to hw_enc_features filtered across slaves. - adding NETIF_F_GSO_PARTIAL to features in bond_setup() With all of these, 'ethtool -k bond0 | grep esp' now reports: tx-esp-segmentation: on esp-hw-offload: on esp-tx-csum-hw-offload: on Fixes: 4861333b4217 ("bonding: add ESP offload features when slaves support") Signed-off-by: Cosmin Ratiu <cratiu(a)nvidia.com> Change-Id: Iebd2a9d903d3e056e7717e8ca2527a9adf21b2e1 --- drivers/net/bonding/bond_main.c | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-) diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 7b78c2bada81..de105868c009 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -1538,17 +1538,20 @@ static netdev_features_t bond_fix_features(struct net_device *dev, NETIF_F_HIGHDMA | NETIF_F_LRO) #define BOND_ENC_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG | \ - NETIF_F_RXCSUM | NETIF_F_GSO_SOFTWARE) + NETIF_F_RXCSUM | NETIF_F_GSO_SOFTWARE | \ + NETIF_F_GSO_PARTIAL) #define BOND_MPLS_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG | \ NETIF_F_GSO_SOFTWARE) +#define BOND_GSO_PARTIAL_FEATURES (NETIF_F_GSO_ESP) + static void bond_compute_features(struct bonding *bond) { + netdev_features_t gso_partial_features = BOND_GSO_PARTIAL_FEATURES; unsigned int dst_release_flag = IFF_XMIT_DST_RELEASE | IFF_XMIT_DST_RELEASE_PERM; - netdev_features_t gso_partial_features = NETIF_F_GSO_ESP; netdev_features_t vlan_features = BOND_VLAN_FEATURES; netdev_features_t enc_features = BOND_ENC_FEATURES; #ifdef CONFIG_XFRM_OFFLOAD @@ -1582,8 +1585,9 @@ static void bond_compute_features(struct bonding *bond) BOND_XFRM_FEATURES); #endif /* CONFIG_XFRM_OFFLOAD */ - if (slave->dev->hw_enc_features & NETIF_F_GSO_PARTIAL) - gso_partial_features &= slave->dev->gso_partial_features; + gso_partial_features = netdev_increment_features(gso_partial_features, + slave->dev->gso_partial_features, + BOND_GSO_PARTIAL_FEATURES); mpls_features = netdev_increment_features(mpls_features, slave->dev->mpls_features, @@ -1598,10 +1602,7 @@ static void bond_compute_features(struct bonding *bond) } bond_dev->hard_header_len = max_hard_header_len; - if (gso_partial_features & NETIF_F_GSO_ESP) - bond_dev->gso_partial_features |= NETIF_F_GSO_ESP; - else - bond_dev->gso_partial_features &= ~NETIF_F_GSO_ESP; + bond_dev->gso_partial_features = gso_partial_features; done: bond_dev->vlan_features = vlan_features; @@ -6046,6 +6047,7 @@ void bond_setup(struct net_device *bond_dev) bond_dev->hw_features |= NETIF_F_GSO_ENCAP_ALL; bond_dev->features |= bond_dev->hw_features; bond_dev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX; + bond_dev->features |= NETIF_F_GSO_PARTIAL; #ifdef CONFIG_XFRM_OFFLOAD bond_dev->hw_features |= BOND_XFRM_FEATURES; /* Only enable XFRM features if this is an active-backup config */ -- 2.45.0

8 months, 3 weeks

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[PATCH 0/3] tools/nolibc: compatibility with -Wmissing-prototypes

by Thomas Weißschuh

Make nolibc compatible with -Wmissing-prototypes Signed-off-by: Thomas Weißschuh <linux(a)weissschuh.net> --- Thomas Weißschuh (3): tools/nolibc: add prototypes for non-static functions selftests/nolibc: ignore -Wmissing-prototypes selftests/nolibc: enable -Wmissing-prototypes tools/include/nolibc/arch-mips.h | 1 + tools/include/nolibc/crt.h | 2 ++ tools/include/nolibc/signal.h | 1 + tools/include/nolibc/stackprotector.h | 2 ++ tools/include/nolibc/stdlib.h | 1 + tools/include/nolibc/string.h | 4 ++++ tools/testing/selftests/nolibc/Makefile | 2 +- tools/testing/selftests/nolibc/nolibc-test.c | 2 ++ 8 files changed, 14 insertions(+), 1 deletion(-) --- base-commit: d0d106a2bd21499901299160744e5fe9f4c83ddb change-id: 20250123-nolibc-prototype-0477bb05c808 Best regards, -- Thomas Weißschuh <linux(a)weissschuh.net>

8 months, 3 weeks

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[PATCH v6 0/3] Enable Zicbom in usermode

by Yunhui Cui

v1/v2: There is only the first patch: RISC-V: Enable cbo.clean/flush in usermode, which mainly removes the enabling of cbo.inval in user mode. v3: Add the functionality of Expose Zicbom and selftests for Zicbom. v4: Modify the order of macros, The test_no_cbo_inval function is added separately. v5: 1. Modify the order of RISCV_HWPROBE_KEY_ZICBOM_BLOCK_SIZE in hwprobe.rst 2. "TEST_NO_ZICBOINVAL" -> "TEST_NO_CBO_INVAL" v6: Change hwprobe_ext0_has's second param to u64. Yunhui Cui (3): RISC-V: Enable cbo.clean/flush in usermode RISC-V: hwprobe: Expose Zicbom extension and its block size RISC-V: selftests: Add TEST_ZICBOM into CBO tests Documentation/arch/riscv/hwprobe.rst | 6 ++ arch/riscv/include/asm/hwprobe.h | 2 +- arch/riscv/include/uapi/asm/hwprobe.h | 2 + arch/riscv/kernel/cpufeature.c | 8 +++ arch/riscv/kernel/sys_hwprobe.c | 8 ++- tools/testing/selftests/riscv/hwprobe/cbo.c | 66 +++++++++++++++++---- 6 files changed, 79 insertions(+), 13 deletions(-) -- 2.39.2

8 months, 3 weeks

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[PATCH RFC 5/5] rcutorture: kvm: Invoke stress-ng building it if necessary

by Joel Fernandes (Google)

Invoke stress-ng from init using new --stress-ng and optional --stress-ng-args. Default --stress-ng-args are used if none are provided. Not passing --stress-ng does not change the behavior of kvm.sh from before. Signed-off-by: Joel Fernandes (Google) <joel(a)joelfernandes.org> --- tools/testing/selftests/rcutorture/bin/kvm.sh | 38 +++++++++++++++++-- 1 file changed, 34 insertions(+), 4 deletions(-) diff --git a/tools/testing/selftests/rcutorture/bin/kvm.sh b/tools/testing/selftests/rcutorture/bin/kvm.sh index 4766c3023fed..d35496247ee6 100755 --- a/tools/testing/selftests/rcutorture/bin/kvm.sh +++ b/tools/testing/selftests/rcutorture/bin/kvm.sh @@ -42,13 +42,15 @@ TORTURE_JITTER_STOP="" TORTURE_KCONFIG_KASAN_ARG="" TORTURE_KCONFIG_KCSAN_ARG="" TORTURE_KMAKE_ARG="" +TORTURE_MOD=rcutorture TORTURE_NO_AFFINITY="" TORTURE_QEMU_MEM=512 torture_qemu_mem_default=1 TORTURE_REMOTE= TORTURE_SHUTDOWN_GRACE=180 +TORTURE_STRESS_NG= +TORTURE_STRESS_NG_DEFAULT_ARGS="--cpu 1 --cpu-method matrixprod --cpu-ops 1000000 --perf -t 5" TORTURE_SUITE=rcu -TORTURE_MOD=rcutorture TORTURE_TRUST_MAKE="" debuginfo="CONFIG_DEBUG_INFO_NONE=n CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y" resdir="" @@ -90,6 +92,8 @@ usage () { echo " --remote" echo " --results absolute-pathname" echo " --shutdown-grace seconds" + echo " --stress-ng" + echo " --stress-ng-args \"stress-ng arguments\"" echo " --torture lock|rcu|rcuscale|refscale|scf|X*" echo " --trust-make" exit 1 @@ -251,6 +255,14 @@ do TORTURE_SHUTDOWN_GRACE=$2 shift ;; + --stress-ng) + TORTURE_STRESS_NG=1 + ;; + --stress-ng-args) + checkarg --stress-ng-args "(stress-ng arguments)" "$#" "$2" '.*' '^error' + TORTURE_STRESS_NG_DEFAULT_ARGS="$2" + shift + ;; --torture) checkarg --torture "(suite name)" "$#" "$2" '^$lock\|rcu\|rcuscale\|refscale\|scf\|X.*$$' '^--' TORTURE_SUITE=$2 @@ -275,9 +287,27 @@ do shift done -if test -z "$dryrun" && test -n "$TORTURE_INITRD" && !tools/testing/selftests/rcutorture/bin/mkinitrd.sh - echo No initrd and unable to create one, aborting test >&2 - exit 1 +if test -n "$TORTURE_STRESS_NG" +then + if ! "$RCUTORTURE/bin/mkstress-ng.sh" + then + echo "Failed to build stress-ng, aborting test" >&2 + exit 1 + fi +fi + +if test -z "$dryrun" && test -n "$TORTURE_INITRD" +then + stress_args="" + if test -n "$TORTURE_STRESS_NG" + then + stress_args="stress-ng $TORTURE_STRESS_NG_DEFAULT_ARGS" + fi + if ! "$RCUTORTURE/bin/mkinitrd.sh" $stress_args + then + echo "No initrd and unable to create one, aborting test" >&2 + exit 1 + fi fi CONFIGFRAG=${RCUTORTURE}/configs/${TORTURE_SUITE}; export CONFIGFRAG -- 2.34.1

8 months, 3 weeks

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[PATCH RFC 4/5] rcutorture: mkinitrd: Use previous init.c to check if rebuild needed

by Joel Fernandes (Google)

Create the init.c as a temporary init-tmp.c file, even if init already exists. Ensure the existing init.c matches this. If init.c doesn't exist in initrd/ then skip the check and assume init-tmp.c as the new init.c. After that, check if init binary already exists as we did before and skip the build if it does. This does mean we keep a copy of init.c around in the initrd but this is a small file and it is useful to see for debugging anyway. Signed-off-by: Joel Fernandes (Google) <joel(a)joelfernandes.org> --- .../selftests/rcutorture/bin/mkinitrd.sh | 34 +++++++++++++------ 1 file changed, 24 insertions(+), 10 deletions(-) diff --git a/tools/testing/selftests/rcutorture/bin/mkinitrd.sh b/tools/testing/selftests/rcutorture/bin/mkinitrd.sh index 4ba5e962e3cf..d9fbfa205384 100755 --- a/tools/testing/selftests/rcutorture/bin/mkinitrd.sh +++ b/tools/testing/selftests/rcutorture/bin/mkinitrd.sh @@ -17,10 +17,6 @@ if [ ! -d "$D" ]; then echo >&2 "$D does not exist: Malformed kernel source tree?" exit 1 fi -if [ -s "$D/initrd/init" ]; then - echo "$D/initrd/init already exists, no need to create it" - exit 0 -fi # Create a C-language initrd/init infinite-loop program and statically # link it. This results in a very small initrd. @@ -29,8 +25,10 @@ cd $D mkdir -p initrd cd initrd -# Generate the init.c with optional command -cat > init.c << 'EOF_HEAD' +# Generate an init-tmp.c with optional command. This will then be compared +# with any existing init.c. The reason for this is, we want to force a +# rebuild if the optional command or command line arguments have changed. +cat > init-tmp.c << 'EOF_HEAD' #ifndef NOLIBC #include <unistd.h> #include <sys/time.h> @@ -45,7 +43,7 @@ if [ $# -gt 0 ]; then # If command provided, generate run_optional_command() with the specified command. # We use printf to generate the command and args. # Example: echo $(printf '"%s", ' cmd a1 a2) gives: "cmd", "a1", "a2", - cat >> init.c << EOF + cat >> init-tmp.c << EOF pid_t pid = fork(); if (pid == 0) { char *args[] = {$(printf '"%s", ' "$@")NULL}; @@ -54,11 +52,11 @@ if [ $# -gt 0 ]; then EOF else # If no command provided, function will be empty - echo " /* No command specified */" >> init.c + echo " /* No command specified */" >> init-tmp.c fi # Add the rest of the program -cat >> init.c << 'EOF_TAIL' +cat >> init-tmp.c << 'EOF_TAIL' } int main(int argc, char *argv[]) @@ -95,6 +93,23 @@ int main(int argc, char *argv[]) } EOF_TAIL +# Check if init.c exists and compare with init-tmp.c +if [ -f "init.c" ]; then + if ! cmp -s "init.c" "init-tmp.c"; then + mv "init-tmp.c" "init.c" + else + rm "init-tmp.c" + fi +else + mv "init-tmp.c" "init.c" +fi + +# Now check if init binary exists and is up to date +if [ -s "init" ] && [ "init" -nt "init.c" ]; then + echo "$D/initrd/init already exists and is up to date" + exit 0 +fi + # build using nolibc on supported archs (smaller executable) and fall # back to regular glibc on other ones. if echo -e "#if __x86_64__||__i386__||__i486__||__i586__||__i686__" \ @@ -120,7 +135,6 @@ then exit "$ret" fi -rm init.c echo "Done creating a statically linked C-language initrd" exit 0 -- 2.34.1

8 months, 3 weeks

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[PATCH RFC 3/5] rcutorture: mkinitrd: Allow to run optional commands passed to it

by Joel Fernandes (Google)

Embed commands to invoke into init.c via mkinitrd.sh args. This allows init to spawn a child process running the command with the required arguments. Signed-off-by: Joel Fernandes (Google) <joel(a)joelfernandes.org> --- .../selftests/rcutorture/bin/mkinitrd.sh | 35 +++++++++++++++++-- 1 file changed, 33 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/rcutorture/bin/mkinitrd.sh b/tools/testing/selftests/rcutorture/bin/mkinitrd.sh index f3f867129560..4ba5e962e3cf 100755 --- a/tools/testing/selftests/rcutorture/bin/mkinitrd.sh +++ b/tools/testing/selftests/rcutorture/bin/mkinitrd.sh @@ -2,6 +2,9 @@ # SPDX-License-Identifier: GPL-2.0+ # # Create an initrd directory if one does not already exist. +# Usage: mkinitrd.sh [command [args...]] +# Example: mkinitrd.sh stress-ng --cpu 1 --cpu-method matrixprod --cpu-ops 1000000 --perf -t 5 +# Note that command/args are optional. # # Copyright (C) IBM Corporation, 2013 # @@ -25,7 +28,9 @@ echo "Creating a statically linked C-language initrd" cd $D mkdir -p initrd cd initrd -cat > init.c << '___EOF___' + +# Generate the init.c with optional command +cat > init.c << 'EOF_HEAD' #ifndef NOLIBC #include <unistd.h> #include <sys/time.h> @@ -33,6 +38,29 @@ cat > init.c << '___EOF___' volatile unsigned long delaycount; +void run_optional_command() { +EOF_HEAD + +if [ $# -gt 0 ]; then + # If command provided, generate run_optional_command() with the specified command. + # We use printf to generate the command and args. + # Example: echo $(printf '"%s", ' cmd a1 a2) gives: "cmd", "a1", "a2", + cat >> init.c << EOF + pid_t pid = fork(); + if (pid == 0) { + char *args[] = {$(printf '"%s", ' "$@")NULL}; + execve(args[0], args, NULL); + } +EOF +else + # If no command provided, function will be empty + echo " /* No command specified */" >> init.c +fi + +# Add the rest of the program +cat >> init.c << 'EOF_TAIL' +} + int main(int argc, char *argv[]) { int i; @@ -43,6 +71,9 @@ int main(int argc, char *argv[]) for (i = 0; i < argc; i++) printf(" %s", argv[i]); printf("\n"); + + run_optional_command(); + for (;;) { sleep(1); /* Need some userspace time. */ @@ -62,7 +93,7 @@ int main(int argc, char *argv[]) } return 0; } -___EOF___ +EOF_TAIL # build using nolibc on supported archs (smaller executable) and fall # back to regular glibc on other ones. -- 2.34.1

8 months, 3 weeks

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[PATCH RFC 2/5] rcutorture: Add a stress-ng build script

by Joel Fernandes (Google)

This script automates the building of stress-ng and can be run from any directory. It also support cross-compilation. The output is placed into the initrd directory. Signed-off-by: Joel Fernandes (Google) <joel(a)joelfernandes.org> --- .../selftests/rcutorture/bin/mkstress-ng.sh | 86 +++++++++++++++++++ 1 file changed, 86 insertions(+) create mode 100755 tools/testing/selftests/rcutorture/bin/mkstress-ng.sh diff --git a/tools/testing/selftests/rcutorture/bin/mkstress-ng.sh b/tools/testing/selftests/rcutorture/bin/mkstress-ng.sh new file mode 100755 index 000000000000..e5a19cca6923 --- /dev/null +++ b/tools/testing/selftests/rcutorture/bin/mkstress-ng.sh @@ -0,0 +1,86 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0+ +# +# Clone and build the stress-ng tool, placing the binary in the +# initrd directory. Ensure binary is up-to-date. +# +# Usage: ./bin/mkstress-ng.sh (run from any where). +# +# Copyright (C) Google LLC, 2024 +# Author: Joel Fernandes (Google) <joel(a)joelfernandes.org> + +# Get the directory where the script is located +SCRIPT_DIR="$(dirname "$(readlink -f "$0")")" + +REPO_URL="https://github.com/ColinIanKing/stress-ng.git" +SRC_DIR="${SCRIPT_DIR}/../res/stress-ng" +INITRD_DIR="${SCRIPT_DIR}/../initrd" +BIN_NAME="stress-ng" +export COMPILER="${CROSS_COMPILE}gcc" + +is_statically_linked() { + if file "$1" | grep -q "statically linked"; then + return 0 + else + return 1 + fi +} + +needs_build() { + if [ ! -f "$INITRD_DIR/$BIN_NAME" ]; then + return 0 + fi + if [ "$(find "$SRC_DIR" -newer "$INITRD_DIR/$BIN_NAME")" ]; then + return 0 + fi + if ! is_statically_linked "$INITRD_DIR/$BIN_NAME"; then + return 0 + fi + return 1 +} + +if [ ! -d "$INITRD_DIR" ]; then + echo "Error: INITRD_DIR ($INITRD_DIR) does not exist" + exit 1 +fi + +if ! which "$COMPILER" &> /dev/null; then + echo "Error: Compiler $COMPILER not found." + exit 1 +fi + +if [ ! -d "$SRC_DIR" ]; then + echo "Cloning stress-ng repository..." + if ! git clone "$REPO_URL" "$SRC_DIR"; then + echo "Failed to clone stress-ng repository." + rm -rf "$SRC_DIR" + exit 1 + fi +else + echo "Updating stress-ng repository..." + cd "$SRC_DIR" || exit 1 + git pull || { echo "Failed to update stress-ng repository"; exit 1; } + cd - > /dev/null || exit 1 +fi + +# Build stress-ng binary if needed +if needs_build; then + echo "Building stress-ng binary..." + cd "$SRC_DIR" || exit 1 + STATIC=1 make -j 8 || { echo "stress-ng build failed"; exit 1; } + cd - > /dev/null || exit 1 + + # Verify the stress-ng binary is static + if ! is_statically_linked "$SRC_DIR/$BIN_NAME"; then + echo "Error: The stress-ng binary is not statically linked." + exit 1 + fi + + echo "Copying stress-ng binary to initrd directory..." + cp "$SRC_DIR/$BIN_NAME" "$INITRD_DIR" || { echo "Failed to copy stress-ng binary"; exit 1; } +else + echo "stress-ng binary is up-to-date, no build needed." +fi + +echo "stress-ng build process completed successfully." +exit 0 \ No newline at end of file -- 2.34.1

8 months, 3 weeks

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[PATCH RFC 1/5] rcutorture: kvm: Simplify invocation of mkinitrd.sh

by Joel Fernandes (Google)

The else block is unnecessary and we can simply clarify the if condition to remove the else clause. It is more readable. Signed-off-by: Joel Fernandes (Google) <joel(a)joelfernandes.org> --- tools/testing/selftests/rcutorture/bin/kvm.sh | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/tools/testing/selftests/rcutorture/bin/kvm.sh b/tools/testing/selftests/rcutorture/bin/kvm.sh index 42e5e8597a1a..4766c3023fed 100755 --- a/tools/testing/selftests/rcutorture/bin/kvm.sh +++ b/tools/testing/selftests/rcutorture/bin/kvm.sh @@ -275,10 +275,7 @@ do shift done -if test -n "$dryrun" || test -z "$TORTURE_INITRD" || tools/testing/selftests/rcutorture/bin/mkinitrd.sh -then - : -else +if test -z "$dryrun" && test -n "$TORTURE_INITRD" && !tools/testing/selftests/rcutorture/bin/mkinitrd.sh echo No initrd and unable to create one, aborting test >&2 exit 1 fi -- 2.34.1

8 months, 3 weeks

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[PATCH net-next] selftests/net: packetdrill: more xfail changes (and a correction)

by Jakub Kicinski

Recent change to add more cases to XFAIL has a broken regex, the matching needs a real regex not a glob pattern. While at it add the cases Willem pointed out during review. Fixes: 3030e3d57ba8 ("selftests/net: packetdrill: make tcp buf limited timing tests benign") Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> --- CC: shuah(a)kernel.org CC: willemb(a)google.com CC: matttbe(a)kernel.org CC: linux-kselftest(a)vger.kernel.org --- tools/testing/selftests/net/packetdrill/ksft_runner.sh | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/net/packetdrill/ksft_runner.sh b/tools/testing/selftests/net/packetdrill/ksft_runner.sh index e15c43b7359b..ef8b25a606d8 100755 --- a/tools/testing/selftests/net/packetdrill/ksft_runner.sh +++ b/tools/testing/selftests/net/packetdrill/ksft_runner.sh @@ -39,11 +39,13 @@ if [[ -n "${KSFT_MACHINE_SLOW}" ]]; then # xfail tests that are known flaky with dbg config, not fixable. # still run them for coverage (and expect 100% pass without dbg). declare -ar xfail_list=( + "tcp_eor_no-coalesce-retrans.pkt" "tcp_fast_recovery_prr-ss.*.pkt" + "tcp_slow_start_slow-start-after-win-update.pkt" "tcp_timestamping.*.pkt" "tcp_user_timeout_user-timeout-probe.pkt" "tcp_zerocopy_epoll_.*.pkt" - "tcp_tcp_info_tcp-info-*-limited.pkt" + "tcp_tcp_info_tcp-info-.*-limited.pkt" ) readonly xfail_regex="^($(printf '%s|' "${xfail_list[@]}"))$" [[ "$script" =~ ${xfail_regex} ]] && failfunc=ktap_test_xfail -- 2.48.1

8 months, 3 weeks

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