1*4882a593Smuzhiyun#!/bin/bash 2*4882a593Smuzhiyun# SPDX-License-Identifier: GPL-2.0 3*4882a593Smuzhiyun# 4*4882a593Smuzhiyun# Test that enough headroom is reserved for the first packet passing through an 5*4882a593Smuzhiyun# IPv6 GRE-like netdevice. 6*4882a593Smuzhiyun 7*4882a593Smuzhiyunsetup_prepare() 8*4882a593Smuzhiyun{ 9*4882a593Smuzhiyun ip link add h1 type veth peer name swp1 10*4882a593Smuzhiyun ip link add h3 type veth peer name swp3 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun ip link set dev h1 up 13*4882a593Smuzhiyun ip address add 192.0.2.1/28 dev h1 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun ip link add dev vh3 type vrf table 20 16*4882a593Smuzhiyun ip link set dev h3 master vh3 17*4882a593Smuzhiyun ip link set dev vh3 up 18*4882a593Smuzhiyun ip link set dev h3 up 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun ip link set dev swp3 up 21*4882a593Smuzhiyun ip address add dev swp3 2001:db8:2::1/64 22*4882a593Smuzhiyun ip address add dev swp3 2001:db8:2::3/64 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun ip link set dev swp1 up 25*4882a593Smuzhiyun tc qdisc add dev swp1 clsact 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun ip link add name er6 type ip6erspan \ 28*4882a593Smuzhiyun local 2001:db8:2::1 remote 2001:db8:2::2 oseq okey 123 29*4882a593Smuzhiyun ip link set dev er6 up 30*4882a593Smuzhiyun 31*4882a593Smuzhiyun ip link add name gt6 type ip6gretap \ 32*4882a593Smuzhiyun local 2001:db8:2::3 remote 2001:db8:2::4 33*4882a593Smuzhiyun ip link set dev gt6 up 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun sleep 1 36*4882a593Smuzhiyun} 37*4882a593Smuzhiyun 38*4882a593Smuzhiyuncleanup() 39*4882a593Smuzhiyun{ 40*4882a593Smuzhiyun ip link del dev gt6 41*4882a593Smuzhiyun ip link del dev er6 42*4882a593Smuzhiyun ip link del dev swp1 43*4882a593Smuzhiyun ip link del dev swp3 44*4882a593Smuzhiyun ip link del dev vh3 45*4882a593Smuzhiyun} 46*4882a593Smuzhiyun 47*4882a593Smuzhiyuntest_headroom() 48*4882a593Smuzhiyun{ 49*4882a593Smuzhiyun local type=$1; shift 50*4882a593Smuzhiyun local tundev=$1; shift 51*4882a593Smuzhiyun 52*4882a593Smuzhiyun tc filter add dev swp1 ingress pref 1000 matchall skip_hw \ 53*4882a593Smuzhiyun action mirred egress mirror dev $tundev 54*4882a593Smuzhiyun ping -I h1 192.0.2.2 -c 1 -w 2 &> /dev/null 55*4882a593Smuzhiyun tc filter del dev swp1 ingress pref 1000 56*4882a593Smuzhiyun 57*4882a593Smuzhiyun # If it doesn't panic, it passes. 58*4882a593Smuzhiyun printf "TEST: %-60s [PASS]\n" "$type headroom" 59*4882a593Smuzhiyun} 60*4882a593Smuzhiyun 61*4882a593Smuzhiyuntrap cleanup EXIT 62*4882a593Smuzhiyun 63*4882a593Smuzhiyunsetup_prepare 64*4882a593Smuzhiyuntest_headroom ip6gretap gt6 65*4882a593Smuzhiyuntest_headroom ip6erspan er6 66