Verify when a bond is configured with {up,down}delay and the link state
of slave members flaps if there are no remaining members up the bond
should immediately select a member to bring up. (from bonding.txt
section 13.1 paragraph 4)
Suggested-by: Liang Li <liali@xxxxxxxxxx>
Signed-off-by: Jonathan Toppins <jtoppins@xxxxxxxxxx>
---
Notes:
Bug: Currently the bond never comes back up.
.../selftests/drivers/net/bonding/Makefile | 3 +-
.../net/bonding/slave-link-flapping.sh | 85 +++++++++++++++++++
2 files changed, 87 insertions(+), 1 deletion(-)
create mode 100755 tools/testing/selftests/drivers/net/bonding/slave-link-flapping.sh
diff --git a/tools/testing/selftests/drivers/net/bonding/Makefile b/tools/testing/selftests/drivers/net/bonding/Makefile
index e9dab5f9d773..cb40ef91c152 100644
--- a/tools/testing/selftests/drivers/net/bonding/Makefile
+++ b/tools/testing/selftests/drivers/net/bonding/Makefile
@@ -5,7 +5,8 @@ TEST_PROGS := \
bond-arp-interval-causes-panic.sh \
bond-break-lacpdu-tx.sh \
bond-lladdr-target.sh \
- dev_addr_lists.sh
+ dev_addr_lists.sh \
+ slave-link-flapping.sh
TEST_FILES := lag_lib.sh
diff --git a/tools/testing/selftests/drivers/net/bonding/slave-link-flapping.sh b/tools/testing/selftests/drivers/net/bonding/slave-link-flapping.sh
new file mode 100755
index 000000000000..a1499933fd39
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/bonding/slave-link-flapping.sh
@@ -0,0 +1,85 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+
+# Regression Test:
+# When the bond is configured with down/updelay and the link state of
+# slave members flaps if there are no remaining members up the bond
+# should immediately select a member to bring up. (from bonding.txt
+# section 13.1 paragraph 4)
+#
+# +-------------+ +-----------+
+# | client | | switch |
+# | | | |
+# | +--------| link1 |-----+ |
+# | | +-------+ | |
+# | | | | | |
+# | | +-------+ | |
+# | | bond | link2 | Br0 | |
+# +-------------+ +-----------+
+# 172.20.2.1 172.20.2.2
+
+set -e
+
+BOND="bond0"
+LINK1="veth1"
+LINK2="veth2"
+CLIENTIP="172.20.2.1"
+SWITCHIP="172.20.2.2"
+NAMESPACES="switch client"
+
+cleanup()
+{
+ for n in ${NAMESPACES}; do
+ ip netns delete ${n} >/dev/null 2>&1 || true
+ done
+ modprobe -r bonding
+}
+
+setup_network()
+{
+ # create namespaces
+ for n in ${NAMESPACES}; do
+ ip netns add ${n}
+ done
+
+ # create veths
+ ip link add name ${LINK1}-bond type veth peer name ${LINK1}-end
+ ip link add name ${LINK2}-bond type veth peer name ${LINK2}-end
+
+ # create switch
+ ip netns exec switch ip link add br0 up type bridge
+ ip link set ${LINK1}-end netns switch up
+ ip link set ${LINK2}-end netns switch up
+ ip netns exec switch ip link set ${LINK1}-end master br0
+ ip netns exec switch ip link set ${LINK2}-end master br0
+ ip netns exec switch ip addr add ${SWITCHIP}/24 dev br0
+
+ # create client
+ ip link set ${LINK1}-bond netns client
+ ip link set ${LINK2}-bond netns client
+ ip netns exec client ip link add ${BOND} type bond \
+ mode 2 miimon 100 updelay 10000
+ ip netns exec client ip link set ${LINK1}-bond master ${BOND}
+ ip netns exec client ip link set ${LINK2}-bond master ${BOND}
+ ip netns exec client ip link set ${BOND} up
+ ip netns exec client ip addr add ${CLIENTIP}/24 dev ${BOND}
+}
+
+trap cleanup 0 1 2
+cleanup
+sleep 1
+
+dmesg --clear
+setup_network
+
+# verify connectivity
+ip netns exec client ping ${SWITCHIP} -c 5 >/dev/null 2>&1
+
+# force the links of the bond down
+ip netns exec switch ip link set ${LINK1}-end down
+sleep 2
+ip netns exec switch ip link set ${LINK1}-end up
+ip netns exec switch ip link set ${LINK2}-end down
+
+# re-verify connectivity
+ip netns exec client ping ${SWITCHIP} -c 5 >/dev/null 2>&1
--
2.31.1
