#!/bin/bash MY_DIR=$(dirname $0) # Details on the bpf prog BPF_CGRP2_ARRAY_NAME='test_cgrp2_array_pin' BPF_PROG="$MY_DIR/test_cgrp2_tc_kern.o" BPF_SECTION='filter' [ -z "$TC" ] && TC='tc' [ -z "$IP" ] && IP='ip' # Names of the veth interface, net namespace...etc. HOST_IFC='ve' NS_IFC='vens' NS='ns' find_mnt() { cat /proc/mounts | \ awk '{ if ($3 == "'$1'" && mnt == "") { mnt = $2 }} END { print mnt }' } # Init cgroup2 vars init_cgrp2_vars() { CGRP2_ROOT=$(find_mnt cgroup2) if [ -z "$CGRP2_ROOT" ] then CGRP2_ROOT='/mnt/cgroup2' MOUNT_CGRP2="yes" fi CGRP2_TC="$CGRP2_ROOT/tc" CGRP2_TC_LEAF="$CGRP2_TC/leaf" } # Init bpf fs vars init_bpf_fs_vars() { local bpf_fs_root=$(find_mnt bpf) [ -n "$bpf_fs_root" ] || return -1 BPF_FS_TC_SHARE="$bpf_fs_root/tc/globals" } setup_cgrp2() { case $1 in start) if [ "$MOUNT_CGRP2" == 'yes' ] then [ -d $CGRP2_ROOT ] || mkdir -p $CGRP2_ROOT mount -t cgroup2 none $CGRP2_ROOT || return $? fi mkdir -p $CGRP2_TC_LEAF ;; *) rmdir $CGRP2_TC_LEAF && rmdir $CGRP2_TC [ "$MOUNT_CGRP2" == 'yes' ] && umount $CGRP2_ROOT ;; esac } setup_bpf_cgrp2_array() { local bpf_cgrp2_array="$BPF_FS_TC_SHARE/$BPF_CGRP2_ARRAY_NAME" case $1 in start) $MY_DIR/test_cgrp2_array_pin -U $bpf_cgrp2_array -v $CGRP2_TC ;; *) [ -d "$BPF_FS_TC_SHARE" ] && rm -f $bpf_cgrp2_array ;; esac } setup_net() { case $1 in start) $IP link add $HOST_IFC type veth peer name $NS_IFC || return $? $IP link set dev $HOST_IFC up || return $? sysctl -q net.ipv6.conf.$HOST_IFC.accept_dad=0 $IP netns add ns || return $? $IP link set dev $NS_IFC netns ns || return $? $IP -n $NS link set dev $NS_IFC up || return $? $IP netns exec $NS sysctl -q net.ipv6.conf.$NS_IFC.accept_dad=0 $TC qdisc add dev $HOST_IFC clsact || return $? $TC filter add dev $HOST_IFC egress bpf da obj $BPF_PROG sec $BPF_SECTION || return $? ;; *) $IP netns del $NS $IP link del $HOST_IFC ;; esac } run_in_cgrp() { # Fork another bash and move it under the specified cgroup. # It makes the cgroup cleanup easier at the end of the test. cmd='echo $$ > ' cmd="$cmd $1/cgroup.procs; exec $2" bash -c "$cmd" } do_test() { run_in_cgrp $CGRP2_TC_LEAF "ping -6 -c3 ff02::1%$HOST_IFC >& /dev/null" local dropped=$($TC -s qdisc show dev $HOST_IFC | tail -3 | \ awk '/drop/{print substr($7, 0, index($7, ",")-1)}') if [[ $dropped -eq 0 ]] then echo "FAIL" return 1 else echo "Successfully filtered $dropped packets" return 0 fi } do_exit() { if [ "$DEBUG" == "yes" ] && [ "$MODE" != 'cleanuponly' ] then echo "------ DEBUG ------" echo "mount: "; mount | egrep '(cgroup2|bpf)'; echo echo "$CGRP2_TC_LEAF: "; ls -l $CGRP2_TC_LEAF; echo if [ -d "$BPF_FS_TC_SHARE" ] then echo "$BPF_FS_TC_SHARE: "; ls -l $BPF_FS_TC_SHARE; echo fi echo "Host net:" $IP netns $IP link show dev $HOST_IFC $IP -6 a show dev $HOST_IFC $TC -s qdisc show dev $HOST_IFC echo echo "$NS net:" $IP -n $NS link show dev $NS_IFC $IP -n $NS -6 link show dev $NS_IFC echo "------ DEBUG ------" echo fi if [ "$MODE" != 'nocleanup' ] then setup_net stop setup_bpf_cgrp2_array stop setup_cgrp2 stop fi } init_cgrp2_vars init_bpf_fs_vars while [[ $# -ge 1 ]] do a="$1" case $a in debug) DEBUG='yes' shift 1 ;; cleanup-only) MODE='cleanuponly' shift 1 ;; no-cleanup) MODE='nocleanup' shift 1 ;; *) echo "test_cgrp2_tc [debug] [cleanup-only | no-cleanup]" echo " debug: Print cgrp and network setup details at the end of the test" echo " cleanup-only: Try to cleanup things from last test. No test will be run" echo " no-cleanup: Run the test but don't do cleanup at the end" echo "[Note: If no arg is given, it will run the test and do cleanup at the end]" echo exit -1 ;; esac done trap do_exit 0 [ "$MODE" == 'cleanuponly' ] && exit setup_cgrp2 start || exit $? setup_net start || exit $? init_bpf_fs_vars || exit $? setup_bpf_cgrp2_array start || exit $? do_test echo e='this.form.submit();'>
authorLinus Torvalds <torvalds@linux-foundation.org>2016-12-25 14:30:04 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-12-25 14:30:04 -0800
commit3ddc76dfc786cc6f87852693227fb0b1f124f807 (patch)
tree8192b4721e05cf6823087f9696db8c0c8f144b02 /sound/soc/mediatek
parentb272f732f888d4cf43c943a40c9aaa836f9b7431 (diff)
parent1f3a8e49d8f28f498b8694464623ac20aebfe62a (diff)
Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer type cleanups from Thomas Gleixner: "This series does a tree wide cleanup of types related to timers/timekeeping. - Get rid of cycles_t and use a plain u64. The type is not really helpful and caused more confusion than clarity - Get rid of the ktime union. The union has become useless as we use the scalar nanoseconds storage unconditionally now. The 32bit timespec alike storage got removed due to the Y2038 limitations some time ago. That leaves the odd union access around for no reason. Clean it up. Both changes have been done with coccinelle and a small amount of manual mopping up" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: ktime: Get rid of ktime_equal() ktime: Cleanup ktime_set() usage ktime: Get rid of the union clocksource: Use a plain u64 instead of cycle_t
Diffstat (limited to 'sound/soc/mediatek')