[PATCH 07/08] NTB: ntb_test: Update ntb_tool MW tests

Serge Semin
2017-11-30T21:44:07Z

There are devices (like IDT PCIe switches), which outbound MWs xlat address
is setup on peer side. In this case local side is supposed to allocate
a memory buffer and somehow deliver the xlat DMA address to peer so one
could set the outbound MW up. The MW test is altered so to support both
previous Intel/AMD and new IDT-like devices.

Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
---
tools/testing/selftests/ntb/ntb_test.sh | 89 +++++++++++++++++++++++++--------
1 file changed, 68 insertions(+), 21 deletions(-)

diff --git a/tools/testing/selftests/ntb/ntb_test.sh b/tools/testing/selftests/ntb/ntb_test.sh
index 36f6a444c0d9..88c8ceb20607 100755
--- a/tools/testing/selftests/ntb/ntb_test.sh
+++ b/tools/testing/selftests/ntb/ntb_test.sh
@@ -43,7 +43,9 @@ function show_help()
echo " -h show this help message"
echo " -l list available local and remote PCI ids"
echo " -r REMOTE_HOST specify the remote's hostname to connect"
- echo " to for the test (using ssh)"
+ echo " to for the test (using ssh)"
+ echo " -m MW_SIZE memory window size for ntb_tool"
+ echo " (default: $MW_SIZE)"
echo " -p NUM ntb_perf run order (default: $PERF_RUN_ORDER)"
echo " -w max_mw_size maxmium memory window size"
echo
@@ -316,6 +318,32 @@ function message_test()
echo " Passed"
}

+function get_number()
+{
+ KEY=$1
+
+ sed -n "s/^\(${KEY}\)[ \t]*\(0x[0-9a-fA-F]*\)\(\[p\]\)\?$/\2/p"
+}
+
+function mw_alloc()
+{
+ IDX=$1
+ LOC=$2
+ REM=$3
+
+ write_file $MW_SIZE "$LOC/mw_trans$IDX"
+
+ INB_MW=$(read_file "$LOC/mw_trans$IDX")
+ MW_ALIGNED_SIZE=$(echo "$INB_MW" | get_number "Window Size")
+ MW_DMA_ADDR=$(echo "$INB_MW" | get_number "DMA Address")
+
+ write_file "$MW_DMA_ADDR:$(($MW_ALIGNED_SIZE))" "$REM/peer_mw_trans$IDX"
+
+ if [[ $MW_SIZE -ne $MW_ALIGNED_SIZE ]]; then
+ echo "MW $IDX size aligned to $MW_ALIGNED_SIZE"
+ fi
+}
+
function write_mw()
{
split_remote $2
@@ -328,17 +356,15 @@ function write_mw()
fi
}

-function mw_test()
+function mw_check()
{
IDX=$1
LOC=$2
REM=$3

- echo "Running $IDX tests on: $(basename $LOC) / $(basename $REM)"
-
- write_mw "$LOC/$IDX"
+ write_mw "$LOC/mw$IDX"

- split_remote "$LOC/$IDX"
+ split_remote "$LOC/mw$IDX"
if [[ "$REMOTE" == "" ]]; then
A=$VPATH
else
@@ -346,7 +372,7 @@ function mw_test()
ssh "$REMOTE" cat "$VPATH" > "$A"
fi

- split_remote "$REM/peer_$IDX"
+ split_remote "$REM/peer_mw$IDX"
if [[ "$REMOTE" == "" ]]; then
B=$VPATH
else
@@ -354,7 +380,7 @@ function mw_test()
ssh "$REMOTE" cat "$VPATH" > "$B"
fi

- cmp -n $MW_SIZE "$A" "$B"
+ cmp -n $MW_ALIGNED_SIZE "$A" "$B"
if [[ $? != 0 ]]; then
echo "Memory window $MW did not match!" >&2
fi
@@ -366,8 +392,39 @@ function mw_test()
if [[ "$B" == "/tmp/*" ]]; then
rm "$B"
fi
+}
+
+function mw_free()
+{
+ IDX=$1
+ LOC=$2
+ REM=$3
+
+ write_file "$MW_DMA_ADDR:0" "$REM/peer_mw_trans$IDX"
+
+ write_file 0 "$LOC/mw_trans$IDX"
+}
+
+function mw_test()
+{
+ LOC=$1
+ REM=$2
+
+ CNT=$(get_files_count "mw_trans" "$LOC")
+
+ for ((i = 0; i < $CNT; i++)); do
+ echo "Running mw$i tests on: $(subdirname $LOC) / " \
+ "$(subdirname $REM)"
+
+ mw_alloc $i $LOC $REM
+
+ mw_check $i $LOC $REM
+
+ mw_free $i $LOC $REM
+
+ echo " Passed"
+ done

- echo " Passed"
}

function pingpong_test()
@@ -451,18 +508,8 @@ function ntb_tool_tests()
message_test "$LOCAL_PEER_TOOL" "$REMOTE_PEER_TOOL"
message_test "$REMOTE_PEER_TOOL" "$LOCAL_PEER_TOOL"

- for PEER_TRANS in $(ls "$LOCAL_TOOL"/peer_trans*); do
- PT=$(basename $PEER_TRANS)
- write_file $MW_SIZE "$LOCAL_TOOL/$PT"
- write_file $MW_SIZE "$REMOTE_TOOL/$PT"
- done
-
- for MW in $(ls "$LOCAL_TOOL"/mw*); do
- MW=$(basename $MW)
-
- mw_test $MW "$LOCAL_TOOL" "$REMOTE_TOOL"
- mw_test $MW "$REMOTE_TOOL" "$LOCAL_TOOL"
- done
+ mw_test "$LOCAL_PEER_TOOL" "$REMOTE_PEER_TOOL"
+ mw_test "$REMOTE_PEER_TOOL" "$LOCAL_PEER_TOOL"

_modprobe -r ntb_tool
}
--
2.12.0