FM / net

/usr/src/linux-headers-5.15.0-181/tools/testing/selftests/net/

/usr/src/linux-headers-5.15.0-181/tools/testing/selftests/net

Name	Size	Mode	Actions
af_unix/	-	0755	rm
forwarding/	-	0755	rm
mptcp/	-	0755	rm
altnames.sh	1817	0755	edit dl rm
bareudp.sh	21290	0755	edit dl rm
drop_monitor_tests.sh	4439	0755	edit dl rm
fcnal-test.sh	103221	0755	edit dl rm
fib-onlink-tests.sh	12409	0755	edit dl rm
fib_nexthops.sh	68003	0755	edit dl rm
fib_nexthop_multiprefix.sh	5870	0755	edit dl rm
fib_nexthop_nongw.sh	2327	0755	edit dl rm
fib_rule_tests.sh	5981	0755	edit dl rm
fib_tests.sh	57224	0755	edit dl rm
fin_ack_lat.sh	507	0755	edit dl rm
gre_gso.sh	4237	0755	edit dl rm
gro.sh	2132	0755	edit dl rm
icmp.sh	2618	0755	edit dl rm
icmp_redirect.sh	12820	0755	edit dl rm
in_netns.sh	323	0755	edit dl rm
ioam6.sh	25962	0755	edit dl rm
ip6_gre_headroom.sh	1400	0755	edit dl rm
ipv6_flowlabel.sh	502	0755	edit dl rm
ip_defrag.sh	2087	0755	edit dl rm
l2tp.sh	9909	0755	edit dl rm
lib.sh	597	0644	edit dl rm
Makefile	2499	0644	edit dl rm
msg_zerocopy.sh	3012	0755	edit dl rm
netdevice.sh	4521	0755	edit dl rm
net_helper.sh	514	0644	edit dl rm
pmtu.sh	74711	0755	edit dl rm
psock_snd.sh	2252	0755	edit dl rm
reuseaddr_ports_exhausted.sh	635	0755	edit dl rm
reuseport_addr_any.sh	81	0755	edit dl rm
route_localnet.sh	1871	0755	edit dl rm
rtnetlink.sh	29476	0755	edit dl rm
rxtimestamp.sh	79	0755	edit dl rm
setup_loopback.sh	2654	0644	edit dl rm
setup_veth.sh	929	0644	edit dl rm
so_txtime.sh	2434	0755	edit dl rm
srv6_end_dt4_l3vpn_test.sh	17454	0755	edit dl rm
srv6_end_dt6_l3vpn_test.sh	17615	0755	edit dl rm
srv6_end_dt46_l3vpn_test.sh	21121	0755	edit dl rm
tcp_fastopen_backup_key.sh	1086	0755	edit dl rm
test_blackhole_dev.sh	280	0755	edit dl rm
test_bpf.sh	225	0755	edit dl rm
test_vxlan_fdb_changelink.sh	678	0755	edit dl rm
test_vxlan_under_vrf.sh	5607	0755	edit dl rm
toeplitz.sh	4983	0755	edit dl rm
toeplitz_client.sh	667	0755	edit dl rm
traceroute.sh	7131	0755	edit dl rm
txtimestamp.sh	1702	0755	edit dl rm
udpgro.sh	5988	0755	edit dl rm
udpgro_bench.sh	2126	0755	edit dl rm
udpgro_fwd.sh	7145	0755	edit dl rm
udpgso.sh	545	0755	edit dl rm
udpgso_bench.sh	2852	0755	edit dl rm
unicast_extensions.sh	8263	0755	edit dl rm
veth.sh	10441	0755	edit dl rm
vrf-xfrm-tests.sh	10970	0755	edit dl rm
vrf_route_leaking.sh	14946	0755	edit dl rm
vrf_strict_mode_test.sh	7688	0755	edit dl rm
xfrm_policy.sh	14759	0755	edit dl rm

Edit: /usr/src/linux-headers-5.15.0-181/tools/testing/selftests/net/msg_zerocopy.sh (3012B)

#!/bin/bash
#
# Send data between two processes across namespaces
# Run twice: once without and once with zerocopy

set -e

readonly DEV="veth0"
readonly DEV_MTU=65535
readonly BIN="./msg_zerocopy"

readonly RAND="$(mktemp -u XXXXXX)"
readonly NSPREFIX="ns-${RAND}"
readonly NS1="${NSPREFIX}1"
readonly NS2="${NSPREFIX}2"

readonly SADDR4='192.168.1.1'
readonly DADDR4='192.168.1.2'
readonly SADDR6='fd::1'
readonly DADDR6='fd::2'

readonly path_sysctl_mem="net.core.optmem_max"

# No arguments: automated test
if [[ "$#" -eq "0" ]]; then
	$0 4 tcp -t 1
	$0 6 tcp -t 1
	$0 4 udp -t 1
	$0 6 udp -t 1
	echo "OK. All tests passed"
	exit 0
fi

# Argument parsing
if [[ "$#" -lt "2" ]]; then
	echo "Usage: $0 [4|6] [tcp|udp|raw|raw_hdrincl|packet|packet_dgram] <args>"
	exit 1
fi

readonly IP="$1"
shift
readonly TXMODE="$1"
shift
readonly EXTRA_ARGS="$@"

# Argument parsing: configure addresses
if [[ "${IP}" == "4" ]]; then
	readonly SADDR="${SADDR4}"
	readonly DADDR="${DADDR4}"
elif [[ "${IP}" == "6" ]]; then
	readonly SADDR="${SADDR6}"
	readonly DADDR="${DADDR6}"
else
	echo "Invalid IP version ${IP}"
	exit 1
fi

# Argument parsing: select receive mode
#
# This differs from send mode for
# - packet:	use raw recv, because packet receives skb clones
# - raw_hdrinc: use raw recv, because hdrincl is a tx-only option
case "${TXMODE}" in
'packet' | 'packet_dgram' | 'raw_hdrincl')
	RXMODE='raw'
	;;
*)
	RXMODE="${TXMODE}"
	;;
esac

# Start of state changes: install cleanup handler
save_sysctl_mem="$(sysctl -n ${path_sysctl_mem})"

cleanup() {
	ip netns del "${NS2}"
	ip netns del "${NS1}"
	sysctl -w -q "${path_sysctl_mem}=${save_sysctl_mem}"
}

trap cleanup EXIT

# Configure system settings
sysctl -w -q "${path_sysctl_mem}=1000000"

# Create virtual ethernet pair between network namespaces
ip netns add "${NS1}"
ip netns add "${NS2}"

ip link add "${DEV}" mtu "${DEV_MTU}" netns "${NS1}" type veth \
  peer name "${DEV}" mtu "${DEV_MTU}" netns "${NS2}"

# Bring the devices up
ip -netns "${NS1}" link set "${DEV}" up
ip -netns "${NS2}" link set "${DEV}" up

# Set fixed MAC addresses on the devices
ip -netns "${NS1}" link set dev "${DEV}" address 02:02:02:02:02:02
ip -netns "${NS2}" link set dev "${DEV}" address 06:06:06:06:06:06

# Add fixed IP addresses to the devices
ip -netns "${NS1}" addr add 192.168.1.1/24 dev "${DEV}"
ip -netns "${NS2}" addr add 192.168.1.2/24 dev "${DEV}"
ip -netns "${NS1}" addr add       fd::1/64 dev "${DEV}" nodad
ip -netns "${NS2}" addr add       fd::2/64 dev "${DEV}" nodad

# Optionally disable sg or csum offload to test edge cases
# ip netns exec "${NS1}" ethtool -K "${DEV}" sg off

do_test() {
	local readonly ARGS="$1"

echo "ipv${IP} ${TXMODE} ${ARGS}"
	ip netns exec "${NS2}" "${BIN}" "-${IP}" -i "${DEV}" -t 2 -C 2 -S "${SADDR}" -D "${DADDR}" ${ARGS} -r "${RXMODE}" &
	sleep 0.2
	ip netns exec "${NS1}" "${BIN}" "-${IP}" -i "${DEV}" -t 1 -C 3 -S "${SADDR}" -D "${DADDR}" ${ARGS} "${TXMODE}"
	wait
}

do_test "${EXTRA_ARGS}"
do_test "-z ${EXTRA_ARGS}"
echo ok

cmd: