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selftests: netfilter: conntrack_sctp_collision.sh: move to lib.sh infra

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While at it, address warnings generated by shellcheck and fix following
minor issues:

 - some distros place netem in 'extra' modules package, so add a skip check for netem-attach
   failure.
 - tc prints a warning for the 100mbit class:
   "Warning: sch_htb: quantum of class 10001 is big. Consider r2q change."
   Silence this by increasing the divisor.

Signed-off-by: Florian Westphal <fw@strlen.de>
Link: https://lore.kernel.org/r/20240411233624.8129-7-fw@strlen.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Florian Westphal 2024-04-12 01:36:11 +02:00 committed by Jakub Kicinski
parent 6f864d391b
commit 9785517a22
1 changed files with 32 additions and 34 deletions
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66
tools/testing/selftests/net/netfilter/conntrack_sctp_collision.sh
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@ -12,69 +12,67 @@
#
# TOPO: SERVER_NS (link0)<--->(link1) ROUTER_NS (link2)<--->(link3) CLIENT_NS
CLIENT_NS=$(mktemp -u client-XXXXXXXX)
source lib.sh
CLIENT_IP="198.51.200.1"
CLIENT_PORT=1234
SERVER_NS=$(mktemp -u server-XXXXXXXX)
SERVER_IP="198.51.100.1"
SERVER_PORT=1234
ROUTER_NS=$(mktemp -u router-XXXXXXXX)
CLIENT_GW="198.51.200.2"
SERVER_GW="198.51.100.2"
# setup the topo
setup() {
ip net add $CLIENT_NS
ip net add $SERVER_NS
ip net add $ROUTER_NS
ip -n $SERVER_NS link add link0 type veth peer name link1 netns $ROUTER_NS
ip -n $CLIENT_NS link add link3 type veth peer name link2 netns $ROUTER_NS
setup_ns CLIENT_NS SERVER_NS ROUTER_NS
ip -n "$SERVER_NS" link add link0 type veth peer name link1 netns "$ROUTER_NS"
ip -n "$CLIENT_NS" link add link3 type veth peer name link2 netns "$ROUTER_NS"
ip -n $SERVER_NS link set link0 up
ip -n $SERVER_NS addr add $SERVER_IP/24 dev link0
ip -n $SERVER_NS route add $CLIENT_IP dev link0 via $SERVER_GW
ip -n "$SERVER_NS" link set link0 up
ip -n "$SERVER_NS" addr add $SERVER_IP/24 dev link0
ip -n "$SERVER_NS" route add $CLIENT_IP dev link0 via $SERVER_GW
ip -n $ROUTER_NS link set link1 up
ip -n $ROUTER_NS link set link2 up
ip -n $ROUTER_NS addr add $SERVER_GW/24 dev link1
ip -n $ROUTER_NS addr add $CLIENT_GW/24 dev link2
ip net exec $ROUTER_NS sysctl -wq net.ipv4.ip_forward=1
ip -n "$ROUTER_NS" link set link1 up
ip -n "$ROUTER_NS" link set link2 up
ip -n "$ROUTER_NS" addr add $SERVER_GW/24 dev link1
ip -n "$ROUTER_NS" addr add $CLIENT_GW/24 dev link2
ip net exec "$ROUTER_NS" sysctl -wq net.ipv4.ip_forward=1
ip -n $CLIENT_NS link set link3 up
ip -n $CLIENT_NS addr add $CLIENT_IP/24 dev link3
ip -n $CLIENT_NS route add $SERVER_IP dev link3 via $CLIENT_GW
ip -n "$CLIENT_NS" link set link3 up
ip -n "$CLIENT_NS" addr add $CLIENT_IP/24 dev link3
ip -n "$CLIENT_NS" route add $SERVER_IP dev link3 via $CLIENT_GW
# simulate the delay on OVS upcall by setting up a delay for INIT_ACK with
# tc on $SERVER_NS side
tc -n $SERVER_NS qdisc add dev link0 root handle 1: htb
tc -n $SERVER_NS class add dev link0 parent 1: classid 1:1 htb rate 100mbit
tc -n $SERVER_NS filter add dev link0 parent 1: protocol ip u32 match ip protocol 132 \
tc -n "$SERVER_NS" qdisc add dev link0 root handle 1: htb r2q 64
tc -n "$SERVER_NS" class add dev link0 parent 1: classid 1:1 htb rate 100mbit
tc -n "$SERVER_NS" filter add dev link0 parent 1: protocol ip u32 match ip protocol 132 \
0xff match u8 2 0xff at 32 flowid 1:1
tc -n $SERVER_NS qdisc add dev link0 parent 1:1 handle 10: netem delay 1200ms
if ! tc -n "$SERVER_NS" qdisc add dev link0 parent 1:1 handle 10: netem delay 1200ms; then
echo "SKIP: Cannot add netem qdisc"
exit $ksft_skip
fi
# simulate the ctstate check on OVS nf_conntrack
ip net exec $ROUTER_NS iptables -A FORWARD -m state --state INVALID,UNTRACKED -j DROP
ip net exec $ROUTER_NS iptables -A INPUT -p sctp -j DROP
ip net exec "$ROUTER_NS" iptables -A FORWARD -m state --state INVALID,UNTRACKED -j DROP
ip net exec "$ROUTER_NS" iptables -A INPUT -p sctp -j DROP
# use a smaller number for assoc's max_retrans to reproduce the issue
modprobe sctp
ip net exec $CLIENT_NS sysctl -wq net.sctp.association_max_retrans=3
modprobe -q sctp
ip net exec "$CLIENT_NS" sysctl -wq net.sctp.association_max_retrans=3
}
cleanup() {
ip net exec $CLIENT_NS pkill sctp_collision 2>&1 >/dev/null
ip net exec $SERVER_NS pkill sctp_collision 2>&1 >/dev/null
ip net del "$CLIENT_NS"
ip net del "$SERVER_NS"
ip net del "$ROUTER_NS"
ip net exec "$CLIENT_NS" pkill sctp_collision >/dev/null 2>&1
ip net exec "$SERVER_NS" pkill sctp_collision >/dev/null 2>&1
cleanup_all_ns
}
do_test() {
ip net exec $SERVER_NS ./sctp_collision server \
ip net exec "$SERVER_NS" ./sctp_collision server \
$SERVER_IP $SERVER_PORT $CLIENT_IP $CLIENT_PORT &
ip net exec $CLIENT_NS ./sctp_collision client \
ip net exec "$CLIENT_NS" ./sctp_collision client \
$CLIENT_IP $CLIENT_PORT $SERVER_IP $SERVER_PORT
}