| #!/bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # |
| # Test that enough headroom is reserved for the first packet passing through an |
| # IPv6 GRE-like netdevice. |
| |
| setup_prepare() |
| { |
| ip link add h1 type veth peer name swp1 |
| ip link add h3 type veth peer name swp3 |
| |
| ip link set dev h1 up |
| ip address add 192.0.2.1/28 dev h1 |
| |
| ip link add dev vh3 type vrf table 20 |
| ip link set dev h3 master vh3 |
| ip link set dev vh3 up |
| ip link set dev h3 up |
| |
| ip link set dev swp3 up |
| ip address add dev swp3 2001:db8:2::1/64 |
| ip address add dev swp3 2001:db8:2::3/64 |
| |
| ip link set dev swp1 up |
| tc qdisc add dev swp1 clsact |
| |
| ip link add name er6 type ip6erspan \ |
| local 2001:db8:2::1 remote 2001:db8:2::2 oseq okey 123 |
| ip link set dev er6 up |
| |
| ip link add name gt6 type ip6gretap \ |
| local 2001:db8:2::3 remote 2001:db8:2::4 |
| ip link set dev gt6 up |
| |
| sleep 1 |
| } |
| |
| cleanup() |
| { |
| ip link del dev gt6 |
| ip link del dev er6 |
| ip link del dev swp1 |
| ip link del dev swp3 |
| ip link del dev vh3 |
| } |
| |
| test_headroom() |
| { |
| local type=$1; shift |
| local tundev=$1; shift |
| |
| tc filter add dev swp1 ingress pref 1000 matchall skip_hw \ |
| action mirred egress mirror dev $tundev |
| ping -I h1 192.0.2.2 -c 1 -w 2 &> /dev/null |
| tc filter del dev swp1 ingress pref 1000 |
| |
| # If it doesn't panic, it passes. |
| printf "TEST: %-60s [PASS]\n" "$type headroom" |
| } |
| |
| trap cleanup EXIT |
| |
| setup_prepare |
| test_headroom ip6gretap gt6 |
| test_headroom ip6erspan er6 |
