Commit d982a2e3 authored by Daniel T. Lee's avatar Daniel T. Lee Committed by Alexei Starovoitov
Browse files

samples/bpf: ensure ipv6 is enabled before running tests 



Currently, a few of BPF tests use ipv6 functionality. The problem here
is that if ipv6 is disabled, these tests will fail, and even if the
test fails, it will not tell you why it failed.

    $ sudo ./test_cgrp2_sock2.sh
    RTNETLINK answers: Permission denied

In order to fix this, this commit ensures ipv6 is enabled prior to
running tests.

Signed-off-by: default avatarDaniel T. Lee <danieltimlee@gmail.com>
Link: https://lore.kernel.org/r/20230115071613.125791-2-danieltimlee@gmail.com


Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent 81bbbb69

samples/bpf/tc_l2_redirect.sh

+3 −0
Original line number Diff line number Diff line
@@ -8,6 +8,7 @@ REDIRECT_USER='./tc_l2_redirect' 
REDIRECT_BPF='./tc_l2_redirect_kern.o'



RP_FILTER=$(< /proc/sys/net/ipv4/conf/all/rp_filter)

IPV6_DISABLED=$(< /proc/sys/net/ipv6/conf/all/disable_ipv6)

IPV6_FORWARDING=$(< /proc/sys/net/ipv6/conf/all/forwarding)



function config_common {
@@ -64,6 +65,7 @@ function config_common { 


	sysctl -q -w net.ipv4.conf.all.rp_filter=0

	sysctl -q -w net.ipv6.conf.all.forwarding=1

	sysctl -q -w net.ipv6.conf.all.disable_ipv6=0

}



function cleanup {
@@ -77,6 +79,7 @@ function cleanup { 
	$IP link del ip6t >& /dev/null

	sysctl -q -w net.ipv4.conf.all.rp_filter=$RP_FILTER

	sysctl -q -w net.ipv6.conf.all.forwarding=$IPV6_FORWARDING

	sysctl -q -w net.ipv6.conf.all.disable_ipv6=$IPV6_DISABLED

	rm -f /sys/fs/bpf/tc/globals/tun_iface

	[[ -z $DEBUG ]] || set -x

	set -e

samples/bpf/test_cgrp2_sock2.sh

+3 −1
Original line number Diff line number Diff line
@@ -7,13 +7,15 @@ LINK_PIN=$BPFFS/test_cgrp2_sock2 
function config_device {

	ip netns add at_ns0

	ip link add veth0 type veth peer name veth0b

	ip link set veth0b up

	ip link set veth0 netns at_ns0

	ip netns exec at_ns0 sysctl -q net.ipv6.conf.veth0.disable_ipv6=0

	ip netns exec at_ns0 ip addr add 172.16.1.100/24 dev veth0

	ip netns exec at_ns0 ip addr add 2401:db00::1/64 dev veth0 nodad

	ip netns exec at_ns0 ip link set dev veth0 up

	sysctl -q net.ipv6.conf.veth0b.disable_ipv6=0

	ip addr add 172.16.1.101/24 dev veth0b

	ip addr add 2401:db00::2/64 dev veth0b nodad

	ip link set veth0b up

}



function config_cgroup {

samples/bpf/test_cgrp2_tc.sh

+2 −0
Original line number Diff line number Diff line
@@ -73,11 +73,13 @@ setup_net() { 
	start)

	    $IP link add $HOST_IFC type veth peer name $NS_IFC || return $?

	    $IP link set dev $HOST_IFC up || return $?

	    sysctl -q net.ipv6.conf.$HOST_IFC.disable_ipv6=0

	    sysctl -q net.ipv6.conf.$HOST_IFC.accept_dad=0



	    $IP netns add ns || return $?

	    $IP link set dev $NS_IFC netns ns || return $?

	    $IP -n $NS link set dev $NS_IFC up || return $?

	    $IP netns exec $NS sysctl -q net.ipv6.conf.$NS_IFC.disable_ipv6=0

	    $IP netns exec $NS sysctl -q net.ipv6.conf.$NS_IFC.accept_dad=0

	    $TC qdisc add dev $HOST_IFC clsact || return $?

	    $TC filter add dev $HOST_IFC egress bpf da obj $BPF_PROG sec $BPF_SECTION || return $?