mirror of
https://github.com/edk2-porting/linux-next.git
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0eb4634536
After the link tests, there is a race on one side of the test for
the link coming up. It's possible, in some cases, for the test script
to write to the 'peer_trans' files before the link has come up.
To fix this, we simply use the link event file to ensure both sides
see the link as up before continuning.
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Acked-by: Allen Hubbe <Allen.Hubbe@dell.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Fixes: a9c59ef774 ("ntb_test: Add a selftest script for the NTB subsystem")
434 lines
8.3 KiB
Bash
Executable File
434 lines
8.3 KiB
Bash
Executable File
#!/bin/bash
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# Copyright (c) 2016 Microsemi. All Rights Reserved.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation; either version 2 of
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# the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it would be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# Author: Logan Gunthorpe <logang@deltatee.com>
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REMOTE_HOST=
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LIST_DEVS=FALSE
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DEBUGFS=${DEBUGFS-/sys/kernel/debug}
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DB_BITMASK=0x7FFF
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PERF_RUN_ORDER=32
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MAX_MW_SIZE=0
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RUN_DMA_TESTS=
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DONT_CLEANUP=
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MW_SIZE=65536
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function show_help()
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{
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echo "Usage: $0 [OPTIONS] LOCAL_DEV REMOTE_DEV"
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echo "Run tests on a pair of NTB endpoints."
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echo
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echo "If the NTB device loops back to the same host then,"
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echo "just specifying the two PCI ids on the command line is"
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echo "sufficient. Otherwise, if the NTB link spans two hosts"
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echo "use the -r option to specify the hostname for the remote"
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echo "device. SSH will then be used to test the remote side."
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echo "An SSH key between the root users of the host would then"
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echo "be highly recommended."
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echo
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echo "Options:"
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echo " -b BITMASK doorbell clear bitmask for ntb_tool"
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echo " -C don't cleanup ntb modules on exit"
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echo " -d run dma tests"
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echo " -h show this help message"
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echo " -l list available local and remote PCI ids"
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echo " -r REMOTE_HOST specify the remote's hostname to connect"
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echo " to for the test (using ssh)"
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echo " -p NUM ntb_perf run order (default: $PERF_RUN_ORDER)"
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echo " -w max_mw_size maxmium memory window size"
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echo
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}
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function parse_args()
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{
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OPTIND=0
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while getopts "b:Cdhlm:r:p:w:" opt; do
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case "$opt" in
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b) DB_BITMASK=${OPTARG} ;;
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C) DONT_CLEANUP=1 ;;
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d) RUN_DMA_TESTS=1 ;;
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h) show_help; exit 0 ;;
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l) LIST_DEVS=TRUE ;;
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m) MW_SIZE=${OPTARG} ;;
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r) REMOTE_HOST=${OPTARG} ;;
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p) PERF_RUN_ORDER=${OPTARG} ;;
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w) MAX_MW_SIZE=${OPTARG} ;;
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\?)
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echo "Invalid option: -$OPTARG" >&2
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exit 1
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;;
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esac
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done
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}
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parse_args "$@"
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shift $((OPTIND-1))
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LOCAL_DEV=$1
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shift
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parse_args "$@"
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shift $((OPTIND-1))
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REMOTE_DEV=$1
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shift
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parse_args "$@"
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set -e
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function _modprobe()
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{
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modprobe "$@"
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if [[ "$REMOTE_HOST" != "" ]]; then
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ssh "$REMOTE_HOST" modprobe "$@"
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fi
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}
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function split_remote()
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{
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VPATH=$1
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REMOTE=
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if [[ "$VPATH" == *":/"* ]]; then
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REMOTE=${VPATH%%:*}
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VPATH=${VPATH#*:}
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fi
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}
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function read_file()
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{
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split_remote $1
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if [[ "$REMOTE" != "" ]]; then
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ssh "$REMOTE" cat "$VPATH"
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else
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cat "$VPATH"
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fi
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}
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function write_file()
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{
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split_remote $2
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VALUE=$1
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if [[ "$REMOTE" != "" ]]; then
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ssh "$REMOTE" "echo \"$VALUE\" > \"$VPATH\""
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else
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echo "$VALUE" > "$VPATH"
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fi
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}
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function link_test()
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{
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LOC=$1
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REM=$2
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EXP=0
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echo "Running link tests on: $(basename $LOC) / $(basename $REM)"
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if ! write_file "N" "$LOC/link" 2> /dev/null; then
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echo " Unsupported"
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return
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fi
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write_file "N" "$LOC/link_event"
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if [[ $(read_file "$REM/link") != "N" ]]; then
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echo "Expected remote link to be down in $REM/link" >&2
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exit -1
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fi
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write_file "Y" "$LOC/link"
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write_file "Y" "$LOC/link_event"
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echo " Passed"
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}
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function doorbell_test()
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{
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LOC=$1
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REM=$2
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EXP=0
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echo "Running db tests on: $(basename $LOC) / $(basename $REM)"
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write_file "c $DB_BITMASK" "$REM/db"
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for ((i=1; i <= 8; i++)); do
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let DB=$(read_file "$REM/db") || true
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if [[ "$DB" != "$EXP" ]]; then
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echo "Doorbell doesn't match expected value $EXP " \
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"in $REM/db" >&2
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exit -1
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fi
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let "MASK=1 << ($i-1)" || true
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let "EXP=$EXP | $MASK" || true
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write_file "s $MASK" "$LOC/peer_db"
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done
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echo " Passed"
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}
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function read_spad()
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{
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VPATH=$1
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IDX=$2
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ROW=($(read_file "$VPATH" | grep -e "^$IDX"))
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let VAL=${ROW[1]} || true
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echo $VAL
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}
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function scratchpad_test()
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{
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LOC=$1
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REM=$2
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CNT=$(read_file "$LOC/spad" | wc -l)
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echo "Running spad tests on: $(basename $LOC) / $(basename $REM)"
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for ((i = 0; i < $CNT; i++)); do
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VAL=$RANDOM
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write_file "$i $VAL" "$LOC/peer_spad"
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RVAL=$(read_spad "$REM/spad" $i)
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if [[ "$VAL" != "$RVAL" ]]; then
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echo "Scratchpad doesn't match expected value $VAL " \
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"in $REM/spad, got $RVAL" >&2
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exit -1
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fi
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done
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echo " Passed"
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}
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function write_mw()
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{
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split_remote $2
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if [[ "$REMOTE" != "" ]]; then
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ssh "$REMOTE" \
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dd if=/dev/urandom "of=$VPATH" 2> /dev/null || true
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else
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dd if=/dev/urandom "of=$VPATH" 2> /dev/null || true
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fi
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}
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function mw_test()
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{
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IDX=$1
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LOC=$2
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REM=$3
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echo "Running $IDX tests on: $(basename $LOC) / $(basename $REM)"
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write_mw "$LOC/$IDX"
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split_remote "$LOC/$IDX"
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if [[ "$REMOTE" == "" ]]; then
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A=$VPATH
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else
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A=/tmp/ntb_test.$$.A
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ssh "$REMOTE" cat "$VPATH" > "$A"
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fi
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split_remote "$REM/peer_$IDX"
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if [[ "$REMOTE" == "" ]]; then
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B=$VPATH
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else
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B=/tmp/ntb_test.$$.B
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ssh "$REMOTE" cat "$VPATH" > "$B"
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fi
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cmp -n $MW_SIZE "$A" "$B"
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if [[ $? != 0 ]]; then
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echo "Memory window $MW did not match!" >&2
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fi
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if [[ "$A" == "/tmp/*" ]]; then
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rm "$A"
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fi
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if [[ "$B" == "/tmp/*" ]]; then
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rm "$B"
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fi
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echo " Passed"
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}
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function pingpong_test()
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{
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LOC=$1
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REM=$2
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echo "Running ping pong tests on: $(basename $LOC) / $(basename $REM)"
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LOC_START=$(read_file $LOC/count)
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REM_START=$(read_file $REM/count)
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sleep 7
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LOC_END=$(read_file $LOC/count)
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REM_END=$(read_file $REM/count)
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if [[ $LOC_START == $LOC_END ]] || [[ $REM_START == $REM_END ]]; then
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echo "Ping pong counter not incrementing!" >&2
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exit 1
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fi
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echo " Passed"
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}
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function perf_test()
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{
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USE_DMA=$1
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if [[ $USE_DMA == "1" ]]; then
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WITH="with"
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else
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WITH="without"
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fi
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_modprobe ntb_perf run_order=$PERF_RUN_ORDER \
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max_mw_size=$MAX_MW_SIZE use_dma=$USE_DMA
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echo "Running local perf test $WITH DMA"
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write_file "" $LOCAL_PERF/run
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echo -n " "
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read_file $LOCAL_PERF/run
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echo " Passed"
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echo "Running remote perf test $WITH DMA"
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write_file "" $REMOTE_PERF/run
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echo -n " "
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read_file $REMOTE_PERF/run
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echo " Passed"
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_modprobe -r ntb_perf
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}
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function ntb_tool_tests()
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{
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LOCAL_TOOL=$DEBUGFS/ntb_tool/$LOCAL_DEV
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REMOTE_TOOL=$REMOTE_HOST:$DEBUGFS/ntb_tool/$REMOTE_DEV
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echo "Starting ntb_tool tests..."
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_modprobe ntb_tool
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write_file Y $LOCAL_TOOL/link_event
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write_file Y $REMOTE_TOOL/link_event
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link_test $LOCAL_TOOL $REMOTE_TOOL
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link_test $REMOTE_TOOL $LOCAL_TOOL
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#Ensure the link is up on both sides before continuing
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write_file Y $LOCAL_TOOL/link_event
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write_file Y $REMOTE_TOOL/link_event
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for PEER_TRANS in $(ls $LOCAL_TOOL/peer_trans*); do
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PT=$(basename $PEER_TRANS)
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write_file $MW_SIZE $LOCAL_TOOL/$PT
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write_file $MW_SIZE $REMOTE_TOOL/$PT
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done
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doorbell_test $LOCAL_TOOL $REMOTE_TOOL
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doorbell_test $REMOTE_TOOL $LOCAL_TOOL
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scratchpad_test $LOCAL_TOOL $REMOTE_TOOL
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scratchpad_test $REMOTE_TOOL $LOCAL_TOOL
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for MW in $(ls $LOCAL_TOOL/mw*); do
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MW=$(basename $MW)
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mw_test $MW $LOCAL_TOOL $REMOTE_TOOL
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mw_test $MW $REMOTE_TOOL $LOCAL_TOOL
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done
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_modprobe -r ntb_tool
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}
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function ntb_pingpong_tests()
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{
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LOCAL_PP=$DEBUGFS/ntb_pingpong/$LOCAL_DEV
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REMOTE_PP=$REMOTE_HOST:$DEBUGFS/ntb_pingpong/$REMOTE_DEV
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echo "Starting ntb_pingpong tests..."
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_modprobe ntb_pingpong
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pingpong_test $LOCAL_PP $REMOTE_PP
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_modprobe -r ntb_pingpong
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}
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function ntb_perf_tests()
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{
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LOCAL_PERF=$DEBUGFS/ntb_perf/$LOCAL_DEV
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REMOTE_PERF=$REMOTE_HOST:$DEBUGFS/ntb_perf/$REMOTE_DEV
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echo "Starting ntb_perf tests..."
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perf_test 0
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if [[ $RUN_DMA_TESTS ]]; then
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perf_test 1
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fi
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}
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function cleanup()
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{
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set +e
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_modprobe -r ntb_tool 2> /dev/null
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_modprobe -r ntb_perf 2> /dev/null
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_modprobe -r ntb_pingpong 2> /dev/null
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_modprobe -r ntb_transport 2> /dev/null
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set -e
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}
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cleanup
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if ! [[ $$DONT_CLEANUP ]]; then
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trap cleanup EXIT
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fi
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if [ "$(id -u)" != "0" ]; then
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echo "This script must be run as root" 1>&2
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exit 1
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fi
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if [[ "$LIST_DEVS" == TRUE ]]; then
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echo "Local Devices:"
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ls -1 /sys/bus/ntb/devices
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echo
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if [[ "$REMOTE_HOST" != "" ]]; then
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echo "Remote Devices:"
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ssh $REMOTE_HOST ls -1 /sys/bus/ntb/devices
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fi
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exit 0
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fi
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if [[ "$LOCAL_DEV" == $"" ]] || [[ "$REMOTE_DEV" == $"" ]]; then
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show_help
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exit 1
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fi
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ntb_tool_tests
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echo
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ntb_pingpong_tests
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echo
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ntb_perf_tests
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echo
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