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Directory : /lib/modules/5.15.0-1028-aws/build/tools/testing/selftests/bpf/

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Current File : /lib/modules/5.15.0-1028-aws/build/tools/testing/selftests/bpf/test_xdp_veth.sh

#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
#
# Create 3 namespaces with 3 veth peers, and
# forward packets in-between using native XDP
#
#                      XDP_TX
# NS1(veth11)        NS2(veth22)        NS3(veth33)
#      |                  |                  |
#      |                  |                  |
#   (veth1,            (veth2,            (veth3,
#   id:111)            id:122)            id:133)
#     ^ |                ^ |                ^ |
#     | |  XDP_REDIRECT  | |  XDP_REDIRECT  | |
#     | ------------------ ------------------ |
#     -----------------------------------------
#                    XDP_REDIRECT

# Kselftest framework requirement - SKIP code is 4.
ksft_skip=4

TESTNAME=xdp_veth
BPF_FS=$(awk '$3 == "bpf" {print $2; exit}' /proc/mounts)
BPF_DIR=$BPF_FS/test_$TESTNAME

_cleanup()
{
	set +e
	ip link del veth1 2> /dev/null
	ip link del veth2 2> /dev/null
	ip link del veth3 2> /dev/null
	ip netns del ns1 2> /dev/null
	ip netns del ns2 2> /dev/null
	ip netns del ns3 2> /dev/null
	rm -rf $BPF_DIR 2> /dev/null
}

cleanup_skip()
{
	echo "selftests: $TESTNAME [SKIP]"
	_cleanup

	exit $ksft_skip
}

cleanup()
{
	if [ "$?" = 0 ]; then
		echo "selftests: $TESTNAME [PASS]"
	else
		echo "selftests: $TESTNAME [FAILED]"
	fi
	_cleanup
}

if [ $(id -u) -ne 0 ]; then
	echo "selftests: $TESTNAME [SKIP] Need root privileges"
	exit $ksft_skip
fi

if ! ip link set dev lo xdp off > /dev/null 2>&1; then
	echo "selftests: $TESTNAME [SKIP] Could not run test without the ip xdp support"
	exit $ksft_skip
fi

if [ -z "$BPF_FS" ]; then
	echo "selftests: $TESTNAME [SKIP] Could not run test without bpffs mounted"
	exit $ksft_skip
fi

if ! bpftool version > /dev/null 2>&1; then
	echo "selftests: $TESTNAME [SKIP] Could not run test without bpftool"
	exit $ksft_skip
fi

set -e

trap cleanup_skip EXIT

ip netns add ns1
ip netns add ns2
ip netns add ns3

ip link add veth1 index 111 type veth peer name veth11 netns ns1
ip link add veth2 index 122 type veth peer name veth22 netns ns2
ip link add veth3 index 133 type veth peer name veth33 netns ns3

ip link set veth1 up
ip link set veth2 up
ip link set veth3 up

ip -n ns1 addr add 10.1.1.11/24 dev veth11
ip -n ns3 addr add 10.1.1.33/24 dev veth33

ip -n ns1 link set dev veth11 up
ip -n ns2 link set dev veth22 up
ip -n ns3 link set dev veth33 up

mkdir $BPF_DIR
bpftool prog loadall \
	xdp_redirect_map.o $BPF_DIR/progs type xdp \
	pinmaps $BPF_DIR/maps
bpftool map update pinned $BPF_DIR/maps/tx_port key 0 0 0 0 value 122 0 0 0
bpftool map update pinned $BPF_DIR/maps/tx_port key 1 0 0 0 value 133 0 0 0
bpftool map update pinned $BPF_DIR/maps/tx_port key 2 0 0 0 value 111 0 0 0
ip link set dev veth1 xdp pinned $BPF_DIR/progs/redirect_map_0
ip link set dev veth2 xdp pinned $BPF_DIR/progs/redirect_map_1
ip link set dev veth3 xdp pinned $BPF_DIR/progs/redirect_map_2

ip -n ns1 link set dev veth11 xdp obj xdp_dummy.o sec xdp
ip -n ns2 link set dev veth22 xdp obj xdp_tx.o sec xdp
ip -n ns3 link set dev veth33 xdp obj xdp_dummy.o sec xdp

trap cleanup EXIT

ip netns exec ns1 ping -c 1 -W 1 10.1.1.33

exit 0

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