@@ -48,6 +48,7 @@ TEST_PROGS += l2_tos_ttl_inherit.sh
TEST_PROGS += bind_bhash.sh
TEST_PROGS += ip_local_port_range.sh
TEST_PROGS += rps_default_mask.sh
+TEST_PROGS += big_tcp.sh
TEST_PROGS_EXTENDED := in_netns.sh setup_loopback.sh setup_veth.sh
TEST_PROGS_EXTENDED += toeplitz_client.sh toeplitz.sh
TEST_GEN_FILES = socket nettest
new file mode 100755
@@ -0,0 +1,180 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# Testing For IPv4 and IPv6 BIG TCP.
+# TOPO: CLIENT_NS (link0)<--->(link1) ROUTER_NS (link2)<--->(link3) SERVER_NS
+
+CLIENT_NS=$(mktemp -u client-XXXXXXXX)
+CLIENT_IP4="198.51.100.1"
+CLIENT_IP6="2001:db8:1::1"
+
+SERVER_NS=$(mktemp -u server-XXXXXXXX)
+SERVER_IP4="203.0.113.1"
+SERVER_IP6="2001:db8:2::1"
+
+ROUTER_NS=$(mktemp -u router-XXXXXXXX)
+SERVER_GW4="203.0.113.2"
+CLIENT_GW4="198.51.100.2"
+SERVER_GW6="2001:db8:2::2"
+CLIENT_GW6="2001:db8:1::2"
+
+MAX_SIZE=128000
+CHK_SIZE=65535
+
+# Kselftest framework requirement - SKIP code is 4.
+ksft_skip=4
+
+setup() {
+ ip netns add $CLIENT_NS
+ ip netns add $SERVER_NS
+ ip netns add $ROUTER_NS
+ ip -net $ROUTER_NS link add link1 type veth peer name link0 netns $CLIENT_NS
+ ip -net $ROUTER_NS link add link2 type veth peer name link3 netns $SERVER_NS
+
+ ip -net $CLIENT_NS link set link0 up
+ ip -net $CLIENT_NS link set link0 mtu 1442
+ ip -net $CLIENT_NS addr add $CLIENT_IP4/24 dev link0
+ ip -net $CLIENT_NS addr add $CLIENT_IP6/64 dev link0 nodad
+ ip -net $CLIENT_NS route add $SERVER_IP4 dev link0 via $CLIENT_GW4
+ ip -net $CLIENT_NS route add $SERVER_IP6 dev link0 via $CLIENT_GW6
+ ip -net $CLIENT_NS link set dev link0 \
+ gro_ipv4_max_size $MAX_SIZE gso_ipv4_max_size $MAX_SIZE
+ ip -net $CLIENT_NS link set dev link0 \
+ gro_max_size $MAX_SIZE gso_max_size $MAX_SIZE
+ ip net exec $CLIENT_NS sysctl -wq net.ipv4.tcp_window_scaling=10
+
+ ip -net $ROUTER_NS link set link1 up
+ ip -net $ROUTER_NS link set link2 up
+ ip -net $ROUTER_NS addr add $CLIENT_GW4/24 dev link1
+ ip -net $ROUTER_NS addr add $CLIENT_GW6/64 dev link1 nodad
+ ip -net $ROUTER_NS addr add $SERVER_GW4/24 dev link2
+ ip -net $ROUTER_NS addr add $SERVER_GW6/64 dev link2 nodad
+ ip -net $ROUTER_NS link set dev link1 \
+ gro_ipv4_max_size $MAX_SIZE gso_ipv4_max_size $MAX_SIZE
+ ip -net $ROUTER_NS link set dev link2 \
+ gro_ipv4_max_size $MAX_SIZE gso_ipv4_max_size $MAX_SIZE
+ ip -net $ROUTER_NS link set dev link1 \
+ gro_max_size $MAX_SIZE gso_max_size $MAX_SIZE
+ ip -net $ROUTER_NS link set dev link2 \
+ gro_max_size $MAX_SIZE gso_max_size $MAX_SIZE
+ # test for nf_ct_skb_network_trim in nf_conntrack_ovs used by TC ct action.
+ ip net exec $ROUTER_NS tc qdisc add dev link1 ingress
+ ip net exec $ROUTER_NS tc filter add dev link1 ingress \
+ proto ip flower ip_proto tcp action ct
+ ip net exec $ROUTER_NS tc filter add dev link1 ingress \
+ proto ipv6 flower ip_proto tcp action ct
+ ip net exec $ROUTER_NS sysctl -wq net.ipv4.ip_forward=1
+ ip net exec $ROUTER_NS sysctl -wq net.ipv6.conf.all.forwarding=1
+
+ ip -net $SERVER_NS link set link3 up
+ ip -net $SERVER_NS addr add $SERVER_IP4/24 dev link3
+ ip -net $SERVER_NS addr add $SERVER_IP6/64 dev link3 nodad
+ ip -net $SERVER_NS route add $CLIENT_IP4 dev link3 via $SERVER_GW4
+ ip -net $SERVER_NS route add $CLIENT_IP6 dev link3 via $SERVER_GW6
+ ip -net $SERVER_NS link set dev link3 \
+ gro_ipv4_max_size $MAX_SIZE gso_ipv4_max_size $MAX_SIZE
+ ip -net $SERVER_NS link set dev link3 \
+ gro_max_size $MAX_SIZE gso_max_size $MAX_SIZE
+ ip net exec $SERVER_NS sysctl -wq net.ipv4.tcp_window_scaling=10
+ ip net exec $SERVER_NS netserver 2>&1 >/dev/null
+}
+
+cleanup() {
+ ip net exec $SERVER_NS pkill netserver
+ ip -net $ROUTER_NS link del link1
+ ip -net $ROUTER_NS link del link2
+ ip netns del "$CLIENT_NS"
+ ip netns del "$SERVER_NS"
+ ip netns del "$ROUTER_NS"
+}
+
+start_counter() {
+ local ipt="iptables"
+ local iface=$1
+ local netns=$2
+
+ [ "$NF" = "6" ] && ipt="ip6tables"
+ ip net exec $netns $ipt -t raw -A PREROUTING -i $iface \
+ -m length ! --length 0:$CHK_SIZE -j ACCEPT
+}
+
+check_counter() {
+ local ipt="iptables"
+ local iface=$1
+ local netns=$2
+
+ [ "$NF" = "6" ] && ipt="ip6tables"
+ test `ip net exec $netns $ipt -t raw -L -v |grep $iface | awk '{print $1}'` != "0"
+}
+
+stop_counter() {
+ local ipt="iptables"
+ local iface=$1
+ local netns=$2
+
+ [ "$NF" = "6" ] && ipt="ip6tables"
+ ip net exec $netns $ipt -t raw -D PREROUTING -i $iface \
+ -m length ! --length 0:$CHK_SIZE -j ACCEPT
+}
+
+do_netperf() {
+ local serip=$SERVER_IP4
+ local netns=$1
+
+ [ "$NF" = "6" ] && serip=$SERVER_IP6
+ ip net exec $netns netperf -$NF -t TCP_STREAM -H $serip 2>&1 >/dev/null
+}
+
+do_test() {
+ local cli_tso=$1
+ local gw_gro=$2
+ local gw_tso=$3
+ local ser_gro=$4
+ local ret="PASS"
+
+ ip net exec $CLIENT_NS ethtool -K link0 tso $cli_tso
+ ip net exec $ROUTER_NS ethtool -K link1 gro $gw_gro
+ ip net exec $ROUTER_NS ethtool -K link2 tso $gw_tso
+ ip net exec $SERVER_NS ethtool -K link3 gro $ser_gro
+
+ start_counter link1 $ROUTER_NS
+ start_counter link3 $SERVER_NS
+ do_netperf $CLIENT_NS
+
+ if check_counter link1 $ROUTER_NS; then
+ check_counter link3 $SERVER_NS || ret="FAIL_on_link3"
+ else
+ ret="FAIL_on_link1"
+ fi
+
+ stop_counter link1 $ROUTER_NS
+ stop_counter link3 $SERVER_NS
+ printf "%-9s %-8s %-8s %-8s: [%s]\n" \
+ $cli_tso $gw_gro $gw_tso $ser_gro $ret
+ test $ret = "PASS"
+}
+
+testup() {
+ echo "CLI GSO | GW GRO | GW GSO | SER GRO" && \
+ do_test "on" "on" "on" "on" && \
+ do_test "on" "off" "on" "off" && \
+ do_test "off" "on" "on" "on" && \
+ do_test "on" "on" "off" "on" && \
+ do_test "off" "on" "off" "on"
+}
+
+if ! netperf -V &> /dev/null; then
+ echo "SKIP: Could not run test without netperf tool"
+ exit $ksft_skip
+fi
+
+if ! ip link help 2>&1 | grep gso_ipv4_max_size &> /dev/null; then
+ echo "SKIP: Could not run test without gso/gro_ipv4_max_size supported in ip-link"
+ exit $ksft_skip
+fi
+
+trap cleanup EXIT
+setup && echo "Testing for BIG TCP:" && \
+NF=4 testup && echo "***v4 Tests Done***" && \
+NF=6 testup && echo "***v6 Tests Done***"
+exit $?