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ack-tegra/tools/testing/selftests/drivers/net/bonding/bond_lacp_strict.sh
T
Louis Scalbert f17e4fcc2b selftests: bonding: add test for lacp_strict mode 
Add a test for the bonding lacp_strict mode.

Signed-off-by: Louis Scalbert <louis.scalbert@6wind.com>
Acked-by: Jay Vosburgh <jv@jvosburgh.net>
Link: https://patch.msgid.link/20260603150331.1919611-7-louis.scalbert@6wind.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-10 07:53:41 -07:00

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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# Testing if bond lacp_strict works
#
# Partner (p_ns)
# +--------------------------+
# | bond0 |
# | + |
# | eth0 | eth1 |
# | +---+---+ |
# | | | |
# +--------------------------+
# | | eth0 | eth1 |
# | | | |
# |(br_ns) | br0 | br1 |
# | | | |
# | | eth2 | eth3 |
# +--------------------------+
# | | | |
# | +---+---+ |
# | eth0 | eth1 |
# | + |
# | bond0 |
# +--------------------------+
# Dut (d_ns)
lib_dir=$(dirname "$0")
# shellcheck disable=SC1090
source "$lib_dir"/../../../net/lib.sh
COLLECTING_DISTRIBUTING_MASK=48
COLLECTING_DISTRIBUTING=48
FAILED=0
setup_links()
{
# shellcheck disable=SC2154
ip -n "${p_ns}" link add eth0 type veth peer name eth0 netns "${br_ns}"
ip -n "${p_ns}" link add eth1 type veth peer name eth1 netns "${br_ns}"
ip -n "${d_ns}" link add eth0 type veth peer name eth2 netns "${br_ns}"
ip -n "${d_ns}" link add eth1 type veth peer name eth3 netns "${br_ns}"
ip -n "${br_ns}" link add br0 type bridge
ip -n "${br_ns}" link add br1 type bridge
ip -n "${br_ns}" link set dev br0 type bridge stp_state 0
ip -n "${br_ns}" link set dev br1 type bridge stp_state 0
ip -n "${br_ns}" link set eth0 master br0
ip -n "${br_ns}" link set eth2 master br0
ip -n "${br_ns}" link set eth1 master br1
ip -n "${br_ns}" link set eth3 master br1
# Allow LACP trames forwarding on bridge ports
ip netns exec "${br_ns}" sh -c "echo 4 > /sys/class/net/br0/brif/eth0/group_fwd_mask"
ip netns exec "${br_ns}" sh -c "echo 4 > /sys/class/net/br1/brif/eth1/group_fwd_mask"
ip netns exec "${br_ns}" sh -c "echo 4 > /sys/class/net/br0/brif/eth2/group_fwd_mask"
ip netns exec "${br_ns}" sh -c "echo 4 > /sys/class/net/br1/brif/eth3/group_fwd_mask"
ip -n "${br_ns}" link set eth0 up
ip -n "${br_ns}" link set eth2 up
ip -n "${br_ns}" link set eth1 up
ip -n "${br_ns}" link set eth3 up
ip -n "${br_ns}" link set br0 up
ip -n "${br_ns}" link set br1 up
ip -n "${d_ns}" link add bond0 type bond mode 802.3ad miimon 100 \
lacp_rate fast min_links 1
ip -n "${p_ns}" link add bond0 type bond mode 802.3ad miimon 100 \
lacp_rate fast min_links 1
ip -n "${d_ns}" link set eth0 master bond0
ip -n "${d_ns}" link set eth1 master bond0
ip -n "${p_ns}" link set eth0 master bond0
ip -n "${p_ns}" link set eth1 master bond0
ip -n "${d_ns}" link set bond0 up
ip -n "${p_ns}" link set bond0 up
}
test_master_carrier() {
local expected=$1
local mode_name=$2
local carrier
carrier=$(ip netns exec "${d_ns}" cat /sys/class/net/bond0/carrier)
[ "$carrier" == "1" ] && carrier="up" || carrier="down"
[ "$carrier" == "$expected" ] && return
echo "FAIL: Expected carrier $expected in lacp_strict $mode_name mode, got $carrier"
RET=1
}
compare_state() {
local actual_state=$1
local expected_state=$2
local iface=$3
local last_attempt=$4
[ $((actual_state & COLLECTING_DISTRIBUTING_MASK)) -eq "$expected_state" ] \
&& return 0
[ "$last_attempt" -ne 1 ] && return 1
printf "FAIL: Expected LACP %s actor state to " "$iface"
if [ "$expected_state" -eq $COLLECTING_DISTRIBUTING ]; then
echo "be in Collecting/Distributing state"
else
echo "have neither Collecting nor Distributing set."
fi
return 1
}
_test_lacp_port_state() {
local interface=$1
local expected=$2
local last_attempt=$3
local eth0_actor_state eth1_actor_state
local ret=0
# shellcheck disable=SC2016
while IFS='=' read -r k v; do
printf -v "$k" '%s' "$v"
done < <(
ip netns exec "${d_ns}" awk '
/^Slave Interface: / { iface=$3 }
/details actor lacp pdu:/ { ctx="actor" }
/details partner lacp pdu:/ { ctx="partner" }
/^[[:space:]]+port state: / {
if (ctx == "actor") {
gsub(":", "", iface)
printf "%s_%s_state=%s\n", iface, ctx, $3
}
}
' /proc/net/bonding/bond0
)
if [ "$interface" == "eth0" ] || [ "$interface" == "both" ]; then
compare_state "$eth0_actor_state" "$expected" eth0 "$last_attempt" || ret=1
fi
if [ "$interface" == "eth1" ] || [ "$interface" == "both" ]; then
compare_state "$eth1_actor_state" "$expected" eth1 "$last_attempt" || ret=1
fi
return $ret
}
test_lacp_port_state() {
local interface=$1
local expected=$2
local retry=$3
local last_attempt=0
local attempt=1
local ret=1
while [ $attempt -le $((retry + 1)) ]; do
[ $attempt -eq $((retry + 1)) ] && last_attempt=1
_test_lacp_port_state "$interface" "$expected" "$last_attempt" && return
((attempt++))
sleep 1
done
RET=1
}
trap cleanup_all_ns EXIT
setup_ns d_ns p_ns br_ns
setup_links
# Initial state
RET=0
mode=off
test_lacp_port_state both $COLLECTING_DISTRIBUTING 3
test_master_carrier up $mode
log_test "bond LACP" "lacp_strict $mode - eth0 and eth1 up"
# partner eth0 down, eth1 up
# (replicate eth0 state to dut eth0 by shutting a bridge port)
RET=0
ip -n "${p_ns}" link set eth0 down
ip -n "${br_ns}" link set eth2 down
test_lacp_port_state eth0 $FAILED 5
test_lacp_port_state eth1 $COLLECTING_DISTRIBUTING 1
test_master_carrier up $mode
log_test "bond LACP" "lacp_strict $mode - eth0 down"
# partner eth0 and eth1 down
RET=0
ip -n "${p_ns}" link set eth1 down
ip -n "${br_ns}" link set eth3 down
test_lacp_port_state both $FAILED 5
test_master_carrier down $mode # down because of min_links
log_test "bond LACP" "lacp_strict $mode - eth0 and eth1 down"
# partner eth0 up, eth1 down
RET=0
ip -n "${p_ns}" link set eth0 up
ip -n "${br_ns}" link set eth2 up
test_lacp_port_state eth0 $COLLECTING_DISTRIBUTING 60
test_lacp_port_state eth1 $FAILED 1
test_master_carrier up $mode
log_test "bond LACP" "lacp_strict $mode - eth0 up, eth1 down"
# partner eth0 and eth1 up
RET=0
ip -n "${p_ns}" link set eth1 up
ip -n "${br_ns}" link set eth3 up
test_lacp_port_state both $COLLECTING_DISTRIBUTING 60
test_master_carrier up $mode
log_test "bond LACP" "lacp_strict $mode - eth0 and eth1 up"
# partner eth0 stops LACP and eth1 up
RET=0
ip netns exec "${br_ns}" sh -c "echo 0 > /sys/class/net/br0/brif/eth0/group_fwd_mask"
ip netns exec "${br_ns}" sh -c "echo 0 > /sys/class/net/br0/brif/eth2/group_fwd_mask"
test_lacp_port_state eth0 $FAILED 5
test_lacp_port_state eth1 $COLLECTING_DISTRIBUTING 1
test_master_carrier up $mode
log_test "bond LACP" "lacp_strict $mode - eth0 stopped sending LACP"
# partner eth0 and eth1 stop LACP
RET=0
ip netns exec "${br_ns}" sh -c "echo 0 > /sys/class/net/br1/brif/eth1/group_fwd_mask"
ip netns exec "${br_ns}" sh -c "echo 0 > /sys/class/net/br1/brif/eth3/group_fwd_mask"
test_lacp_port_state both $FAILED 5
test_master_carrier up $mode
log_test "bond LACP" "lacp_strict $mode - eth0 and eth1 stopped sending LACP"
# switch to lacp_strict on
RET=0
mode=on
ip -n "${d_ns}" link set dev bond0 type bond lacp_strict $mode
test_lacp_port_state both $FAILED 1
test_master_carrier down $mode
log_test "bond LACP" "lacp_strict $mode - eth0 and eth1 stopped sending LACP"
# switch back to lacp_strict off mode
RET=0
mode=off
ip -n "${d_ns}" link set dev bond0 type bond lacp_strict $mode
test_lacp_port_state both $FAILED 1
test_master_carrier up $mode
log_test "bond LACP" "lacp_strict $mode - eth0 and eth1 stopped sending LACP"
# eth0 recovers LACP
RET=0
ip netns exec "${br_ns}" sh -c "echo 4 > /sys/class/net/br0/brif/eth0/group_fwd_mask"
ip netns exec "${br_ns}" sh -c "echo 4 > /sys/class/net/br0/brif/eth2/group_fwd_mask"
test_lacp_port_state eth0 $COLLECTING_DISTRIBUTING 60
test_lacp_port_state eth1 $FAILED 1
test_master_carrier up $mode
log_test "bond LACP" "lacp_strict $mode - eth0 recovered and eth1 stopped sending LACP"
# eth1 recovers LACP
RET=0
ip netns exec "${br_ns}" sh -c "echo 4 > /sys/class/net/br1/brif/eth1/group_fwd_mask"
ip netns exec "${br_ns}" sh -c "echo 4 > /sys/class/net/br1/brif/eth3/group_fwd_mask"
test_lacp_port_state both $COLLECTING_DISTRIBUTING 60
test_master_carrier up $mode
log_test "bond LACP" "lacp_strict $mode - eth0 and eth1 recovered LACP"
# switch to lacp_strict on
RET=0
mode=on
ip -n "${d_ns}" link set dev bond0 type bond lacp_strict $mode
test_lacp_port_state both $COLLECTING_DISTRIBUTING 1
test_master_carrier up $mode
log_test "bond LACP" "lacp_strict $mode - eth0 and eth1 up"
# partner eth0 down, eth1 up
RET=0
ip -n "${p_ns}" link set eth0 down
ip -n "${br_ns}" link set eth2 down
test_lacp_port_state eth0 $FAILED 5
test_lacp_port_state eth1 $COLLECTING_DISTRIBUTING 1
test_master_carrier up $mode
log_test "bond LACP" "lacp_strict $mode - eth0 down"
# partner eth0 and eth1 down
RET=0
ip -n "${p_ns}" link set eth1 down
ip -n "${br_ns}" link set eth3 down
test_lacp_port_state both $FAILED 5
test_master_carrier down $mode # down because of min_links
log_test "bond LACP" "lacp_strict $mode - eth0 and eth1 down"
# partner eth0 up, eth1 down
RET=0
ip -n "${p_ns}" link set eth0 up
ip -n "${br_ns}" link set eth2 up
test_lacp_port_state eth0 $COLLECTING_DISTRIBUTING 60
test_lacp_port_state eth1 $FAILED 1
test_master_carrier up $mode
log_test "bond LACP" "lacp_strict $mode - eth0 up, eth1 down"
# partner eth0 and eth1 up
RET=0
ip -n "${p_ns}" link set eth1 up
ip -n "${br_ns}" link set eth3 up
test_lacp_port_state both $COLLECTING_DISTRIBUTING 60
test_master_carrier up $mode
log_test "bond LACP" "lacp_strict $mode - eth0 and eth1 up"
# partner eth0 stops LACP and eth1 up
RET=0
ip netns exec "${br_ns}" sh -c "echo 0 > /sys/class/net/br0/brif/eth0/group_fwd_mask"
ip netns exec "${br_ns}" sh -c "echo 0 > /sys/class/net/br0/brif/eth2/group_fwd_mask"
test_lacp_port_state eth0 $FAILED 5
test_lacp_port_state eth1 $COLLECTING_DISTRIBUTING 1
test_master_carrier up $mode
log_test "bond LACP" "lacp_strict $mode - eth0 stopped sending LACP"
# partner eth0 and eth1 stop LACP
RET=0
ip netns exec "${br_ns}" sh -c "echo 0 > /sys/class/net/br1/brif/eth1/group_fwd_mask"
ip netns exec "${br_ns}" sh -c "echo 0 > /sys/class/net/br1/brif/eth3/group_fwd_mask"
test_lacp_port_state both $FAILED 5
test_master_carrier down $mode
log_test "bond LACP" "lacp_strict $mode - eth0 and eth1 stopped sending LACP"
# eth0 recovers LACP
RET=0
ip netns exec "${br_ns}" sh -c "echo 4 > /sys/class/net/br0/brif/eth0/group_fwd_mask"
ip netns exec "${br_ns}" sh -c "echo 4 > /sys/class/net/br0/brif/eth2/group_fwd_mask"
test_lacp_port_state eth0 $COLLECTING_DISTRIBUTING 60
test_lacp_port_state eth1 $FAILED 1
test_master_carrier up $mode
log_test "bond LACP" "lacp_strict $mode - eth0 recovered and eth1 stopped sending LACP"
# eth1 recovers LACP
# shellcheck disable=SC2034
RET=0
ip netns exec "${br_ns}" sh -c "echo 4 > /sys/class/net/br1/brif/eth1/group_fwd_mask"
ip netns exec "${br_ns}" sh -c "echo 4 > /sys/class/net/br1/brif/eth3/group_fwd_mask"
test_lacp_port_state both $COLLECTING_DISTRIBUTING 60
test_master_carrier up $mode
log_test "bond LACP" "lacp_strict $mode - eth0 and eth1 recovered LACP"
exit "${EXIT_STATUS}"
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