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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: Daniel T. Lee <danieltimlee@gmail.com>
Link: https://lore.kernel.org/r/20230115071613.125791-2-danieltimlee@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Daniel T. Lee 2023-01-15 16:16:04 +09:00 committed by Alexei Starovoitov
parent 81bbbb6974
commit d982a2e306
3 changed files with 8 additions and 1 deletions
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3
samples/bpf/tc_l2_redirect.sh
View File

@ -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

4
samples/bpf/test_cgrp2_sock2.sh
View File

@ -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 {

2
samples/bpf/test_cgrp2_tc.sh
View File

@ -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 $?