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bpf: fix XDP vlan selftests test_xdp_vlan.sh 

Change BPF selftest test_xdp_vlan.sh to (default) use generic XDP.

This selftest was created together with a fix for generic XDP, in commit
2972495699 ("net: fix generic XDP to handle if eth header was
mangled"). And was suppose to catch if generic XDP was broken again.

The tests are using veth and assumed that veth driver didn't support
native driver XDP, thus it used the (ip link set) 'xdp' attach that fell
back to generic-XDP. But veth gained native-XDP support in 948d4f214f
("veth: Add driver XDP"), which caused this test script to use
native-XDP.

Fixes: 948d4f214f ("veth: Add driver XDP")
Fixes: 97396ff0bc ("selftests/bpf: add XDP selftests for modifying and popping VLAN headers")
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jesper Dangaard Brouer 2019-08-01 20:00:16 +02:00 committed by David S. Miller
parent 60d60c8fbd
commit 4de9c89a49
1 changed files with 36 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
tools/testing/selftests/bpf/test_xdp_vlan.sh
View File

@ -1,7 +1,12 @@
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# Author: Jesper Dangaard Brouer <hawk@kernel.org>
TESTNAME=xdp_vlan
# Default XDP mode
XDP_MODE=xdpgeneric
usage() {
echo "Testing XDP + TC eBPF VLAN manipulations: $TESTNAME"
echo ""
@ -9,9 +14,23 @@ usage() {
echo " -v | --verbose : Verbose"
echo " --flush : Flush before starting (e.g. after --interactive)"
echo " --interactive : Keep netns setup running after test-run"
echo " --mode=XXX : Choose XDP mode (xdp | xdpgeneric | xdpdrv)"
echo ""
}
valid_xdp_mode()
{
local mode=$1
case "$mode" in
xdpgeneric | xdpdrv | xdp)
return 0
;;
*)
return 1
esac
}
cleanup()
{
local status=$?
@ -37,7 +56,7 @@ cleanup()
# Using external program "getopt" to get --long-options
OPTIONS=$(getopt -o hvfi: \
--long verbose,flush,help,interactive,debug -- "$@")
--long verbose,flush,help,interactive,debug,mode: -- "$@")
if (( $? != 0 )); then
usage
echo "selftests: $TESTNAME [FAILED] Error calling getopt, unknown option?"
@ -60,6 +79,11 @@ while true; do
cleanup
shift
;;
--mode )
shift
XDP_MODE=$1
shift
;;
-- )
shift
break
@ -81,8 +105,14 @@ if [ "$EUID" -ne 0 ]; then
exit 1
fi
ip link set dev lo xdp off 2>/dev/null > /dev/null
if [ $? -ne 0 ];then
valid_xdp_mode $XDP_MODE
if [ $? -ne 0 ]; then
echo "selftests: $TESTNAME [FAILED] unknown XDP mode ($XDP_MODE)"
exit 1
fi
ip link set dev lo xdpgeneric off 2>/dev/null > /dev/null
if [ $? -ne 0 ]; then
echo "selftests: $TESTNAME [SKIP] need ip xdp support"
exit 0
fi
@ -166,7 +196,7 @@ export FILE=test_xdp_vlan.o
# First test: Remove VLAN by setting VLAN ID 0, using "xdp_vlan_change"
export XDP_PROG=xdp_vlan_change
ip netns exec ns1 ip link set $DEVNS1 xdp object $FILE section $XDP_PROG
ip netns exec ns1 ip link set $DEVNS1 $XDP_MODE object $FILE section $XDP_PROG
# In ns1: egress use TC to add back VLAN tag 4011
# (del cmd)
@ -187,8 +217,8 @@ ip netns exec ns1 ping -W 2 -c 3 $IPADDR2
# ETH_P_8021Q indication, and this cause overwriting of our changes.
#
export XDP_PROG=xdp_vlan_remove_outer2
ip netns exec ns1 ip link set $DEVNS1 xdp off
ip netns exec ns1 ip link set $DEVNS1 xdp object $FILE section $XDP_PROG
ip netns exec ns1 ip link set $DEVNS1 $XDP_MODE off
ip netns exec ns1 ip link set $DEVNS1 $XDP_MODE object $FILE section $XDP_PROG
# Now the namespaces should still be able reach each-other, test with ping:
ip netns exec ns2 ping -W 2 -c 3 $IPADDR1