66 lines · bash
1#!/bin/bash2# SPDX-License-Identifier: GPL-2.03#4# Test that enough headroom is reserved for the first packet passing through an5# IPv6 GRE-like netdevice.6 7setup_prepare()8{9 ip link add h1 type veth peer name swp110 ip link add h3 type veth peer name swp311 12 ip link set dev h1 up13 ip address add 192.0.2.1/28 dev h114 15 ip link add dev vh3 type vrf table 2016 ip link set dev h3 master vh317 ip link set dev vh3 up18 ip link set dev h3 up19 20 ip link set dev swp3 up21 ip address add dev swp3 2001:db8:2::1/6422 ip address add dev swp3 2001:db8:2::3/6423 24 ip link set dev swp1 up25 tc qdisc add dev swp1 clsact26 27 ip link add name er6 type ip6erspan \28 local 2001:db8:2::1 remote 2001:db8:2::2 oseq okey 12329 ip link set dev er6 up30 31 ip link add name gt6 type ip6gretap \32 local 2001:db8:2::3 remote 2001:db8:2::433 ip link set dev gt6 up34 35 sleep 136}37 38cleanup()39{40 ip link del dev gt641 ip link del dev er642 ip link del dev swp143 ip link del dev swp344 ip link del dev vh345}46 47test_headroom()48{49 local type=$1; shift50 local tundev=$1; shift51 52 tc filter add dev swp1 ingress pref 1000 matchall skip_hw \53 action mirred egress mirror dev $tundev54 ping -I h1 192.0.2.2 -c 1 -w 2 &> /dev/null55 tc filter del dev swp1 ingress pref 100056 57 # If it doesn't panic, it passes.58 printf "TEST: %-60s [PASS]\n" "$type headroom"59}60 61trap cleanup EXIT62 63setup_prepare64test_headroom ip6gretap gt665test_headroom ip6erspan er666