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Date: Thu, 26 Aug 2021 09:30:42 +0200
From: Paolo Abeni <pabeni@...hat.com>
To: netdev@...r.kernel.org
Cc: "David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>,
Shuah Khan <shuah@...nel.org>, Coco Li <lixiaoyan@...gle.com>,
Willem de Bruijn <willemb@...gle.com>
Subject: [PATCH v2 net-next] selftests/net: allow GRO coalesce test on veth
This change extends the existing GRO coalesce test to
allow running on top of a veth pair, so that no H/W dep
is required to run them.
By default gro.sh will use the veth backend, and will try
to use exiting H/W in loopback mode if a specific device
name is provided with the '-i' command line option.
No functional change is intended for the loopback-based
tests, just move all the relevant initialization/cleanup
code into the related script.
Introduces a new initialization helper script for the
veth backend, and plugs the correct helper script according
to the provided command line.
Additionally, enable veth-based tests by default.
v1 -> v2:
- drop unused code in setup_veth_ns() - Willem
Signed-off-by: Paolo Abeni <pabeni@...hat.com>
---
tools/testing/selftests/net/Makefile | 1 +
tools/testing/selftests/net/gro.sh | 43 +++----------------
tools/testing/selftests/net/setup_loopback.sh | 38 +++++++++++++++-
tools/testing/selftests/net/setup_veth.sh | 41 ++++++++++++++++++
4 files changed, 86 insertions(+), 37 deletions(-)
create mode 100644 tools/testing/selftests/net/setup_veth.sh
diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile
index 4f9f73e7a299..378c0aac5a1a 100644
--- a/tools/testing/selftests/net/Makefile
+++ b/tools/testing/selftests/net/Makefile
@@ -26,6 +26,7 @@ TEST_PROGS += unicast_extensions.sh
TEST_PROGS += udpgro_fwd.sh
TEST_PROGS += veth.sh
TEST_PROGS += ioam6.sh
+TEST_PROGS += gro.sh
TEST_PROGS_EXTENDED := in_netns.sh
TEST_GEN_FILES = socket nettest
TEST_GEN_FILES += psock_fanout psock_tpacket msg_zerocopy reuseport_addr_any
diff --git a/tools/testing/selftests/net/gro.sh b/tools/testing/selftests/net/gro.sh
index 794d2bf36dd7..342ad27f631b 100755
--- a/tools/testing/selftests/net/gro.sh
+++ b/tools/testing/selftests/net/gro.sh
@@ -1,45 +1,14 @@
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
-source setup_loopback.sh
readonly SERVER_MAC="aa:00:00:00:00:02"
readonly CLIENT_MAC="aa:00:00:00:00:01"
readonly TESTS=("data" "ack" "flags" "tcp" "ip" "large")
readonly PROTOS=("ipv4" "ipv6")
-dev="eth0"
+dev=""
test="all"
proto="ipv4"
-setup_interrupt() {
- # Use timer on host to trigger the network stack
- # Also disable device interrupt to not depend on NIC interrupt
- # Reduce test flakiness caused by unexpected interrupts
- echo 100000 >"${FLUSH_PATH}"
- echo 50 >"${IRQ_PATH}"
-}
-
-setup_ns() {
- # Set up server_ns namespace and client_ns namespace
- setup_macvlan_ns "${dev}" server_ns server "${SERVER_MAC}"
- setup_macvlan_ns "${dev}" client_ns client "${CLIENT_MAC}"
-}
-
-cleanup_ns() {
- cleanup_macvlan_ns server_ns server client_ns client
-}
-
-setup() {
- setup_loopback_environment "${dev}"
- setup_interrupt
-}
-
-cleanup() {
- cleanup_loopback "${dev}"
-
- echo "${FLUSH_TIMEOUT}" >"${FLUSH_PATH}"
- echo "${HARD_IRQS}" >"${IRQ_PATH}"
-}
-
run_test() {
local server_pid=0
local exit_code=0
@@ -115,10 +84,12 @@ while getopts "i:t:p:" opt; do
esac
done
-readonly FLUSH_PATH="/sys/class/net/${dev}/gro_flush_timeout"
-readonly IRQ_PATH="/sys/class/net/${dev}/napi_defer_hard_irqs"
-readonly FLUSH_TIMEOUT="$(< ${FLUSH_PATH})"
-readonly HARD_IRQS="$(< ${IRQ_PATH})"
+if [ -n "$dev" ]; then
+ source setup_loopback.sh
+else
+ source setup_veth.sh
+fi
+
setup
trap cleanup EXIT
if [[ "${test}" == "all" ]]; then
diff --git a/tools/testing/selftests/net/setup_loopback.sh b/tools/testing/selftests/net/setup_loopback.sh
index 0a8ad97b07ea..e57bbfbc5208 100755
--- a/tools/testing/selftests/net/setup_loopback.sh
+++ b/tools/testing/selftests/net/setup_loopback.sh
@@ -1,5 +1,11 @@
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
+
+readonly FLUSH_PATH="/sys/class/net/${dev}/gro_flush_timeout"
+readonly IRQ_PATH="/sys/class/net/${dev}/napi_defer_hard_irqs"
+readonly FLUSH_TIMEOUT="$(< ${FLUSH_PATH})"
+readonly HARD_IRQS="$(< ${IRQ_PATH})"
+
netdev_check_for_carrier() {
local -r dev="$1"
@@ -18,7 +24,7 @@ netdev_check_for_carrier() {
# Assumes that there is no existing ipvlan device on the physical device
setup_loopback_environment() {
- local dev="$1"
+ local dev="$1"
# Fail hard if cannot turn on loopback mode for current NIC
ethtool -K "${dev}" loopback on || exit 1
@@ -80,3 +86,33 @@ cleanup_loopback(){
exit 1
fi
}
+
+setup_interrupt() {
+ # Use timer on host to trigger the network stack
+ # Also disable device interrupt to not depend on NIC interrupt
+ # Reduce test flakiness caused by unexpected interrupts
+ echo 100000 >"${FLUSH_PATH}"
+ echo 50 >"${IRQ_PATH}"
+}
+
+setup_ns() {
+ # Set up server_ns namespace and client_ns namespace
+ setup_macvlan_ns "${dev}" server_ns server "${SERVER_MAC}"
+ setup_macvlan_ns "${dev}" client_ns client "${CLIENT_MAC}"
+}
+
+cleanup_ns() {
+ cleanup_macvlan_ns server_ns server client_ns client
+}
+
+setup() {
+ setup_loopback_environment "${dev}"
+ setup_interrupt
+}
+
+cleanup() {
+ cleanup_loopback "${dev}"
+
+ echo "${FLUSH_TIMEOUT}" >"${FLUSH_PATH}"
+ echo "${HARD_IRQS}" >"${IRQ_PATH}"
+}
diff --git a/tools/testing/selftests/net/setup_veth.sh b/tools/testing/selftests/net/setup_veth.sh
new file mode 100644
index 000000000000..1003ddf7b3b2
--- /dev/null
+++ b/tools/testing/selftests/net/setup_veth.sh
@@ -0,0 +1,41 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+setup_veth_ns() {
+ local -r link_dev="$1"
+ local -r ns_name="$2"
+ local -r ns_dev="$3"
+ local -r ns_mac="$4"
+
+ [[ -e /var/run/netns/"${ns_name}" ]] || ip netns add "${ns_name}"
+ echo 100000 > "/sys/class/net/${ns_dev}/gro_flush_timeout"
+ ip link set dev "${ns_dev}" netns "${ns_name}" mtu 65535
+ ip -netns "${ns_name}" link set dev "${ns_dev}" up
+
+ ip netns exec "${ns_name}" ethtool -K "${ns_dev}" gro on tso off
+}
+
+setup_ns() {
+ # Set up server_ns namespace and client_ns namespace
+ ip link add name server type veth peer name client
+
+ setup_veth_ns "${dev}" server_ns server "${SERVER_MAC}"
+ setup_veth_ns "${dev}" client_ns client "${CLIENT_MAC}"
+}
+
+cleanup_ns() {
+ local ns_name
+
+ for ns_name in client_ns server_ns; do
+ [[ -e /var/run/netns/"${ns_name}" ]] && ip netns del "${ns_name}"
+ done
+}
+
+setup() {
+ # no global init setup step needed
+ :
+}
+
+cleanup() {
+ cleanup_ns
+}
--
2.26.3
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