mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-12 13:34:10 +08:00
selftests/bpf: Xsk selftests framework
This patch adds AF_XDP selftests framework under selftests/bpf.
Topology:
---------
----------- -----------
| xskX | --------- | xskY |
----------- | -----------
| | |
----------- | ----------
| vethX | --------- | vethY |
----------- peer ----------
| | |
namespaceX | namespaceY
Prerequisites setup by script test_xsk.sh:
Set up veth interfaces as per the topology shown ^^:
* setup two veth interfaces and one namespace
** veth<xxxx> in root namespace
** veth<yyyy> in af_xdp<xxxx> namespace
** namespace af_xdp<xxxx>
* create a spec file veth.spec that includes this run-time configuration
*** xxxx and yyyy are randomly generated 4 digit numbers used to avoid
conflict with any existing interface
* tests the veth and xsk layers of the topology
Signed-off-by: Weqaar Janjua <weqaar.a.janjua@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Yonghong Song <yhs@fb.com>
Acked-by: Björn Töpel <bjorn.topel@intel.com>
Link: https://lore.kernel.org/bpf/20201207215333.11586-2-weqaar.a.janjua@intel.com
This commit is contained in:
Weqaar Janjua
Daniel Borkmann
parent
b60da4955f
commit
a89052572e
@ -46,7 +46,8 @@ endif
|
||||
|
||||
TEST_GEN_FILES =
|
||||
TEST_FILES = test_lwt_ip_encap.o \
|
||||
test_tc_edt.o
|
||||
test_tc_edt.o \
|
||||
xsk_prereqs.sh
|
||||
|
||||
# Order correspond to 'make run_tests' order
|
||||
TEST_PROGS := test_kmod.sh \
|
||||
@ -70,6 +71,7 @@ TEST_PROGS := test_kmod.sh \
|
||||
test_bpftool_build.sh \
|
||||
test_bpftool.sh \
|
||||
test_bpftool_metadata.sh \
|
||||
test_xsk.sh
|
||||
|
||||
TEST_PROGS_EXTENDED := with_addr.sh \
|
||||
with_tunnels.sh \
|
||||
|
||||
152
tools/testing/selftests/bpf/test_xsk.sh
Executable file
152
tools/testing/selftests/bpf/test_xsk.sh
Executable file
@ -0,0 +1,152 @@
|
||||
#!/bin/bash
|
||||
# SPDX-License-Identifier: GPL-2.0
|
||||
# Copyright(c) 2020 Intel Corporation, Weqaar Janjua <weqaar.a.janjua@intel.com>
|
||||
|
||||
# AF_XDP selftests based on veth
|
||||
#
|
||||
# End-to-end AF_XDP over Veth test
|
||||
#
|
||||
# Topology:
|
||||
# ---------
|
||||
# ----------- -----------
|
||||
# | xskX | --------- | xskY |
|
||||
# ----------- | -----------
|
||||
# | | |
|
||||
# ----------- | ----------
|
||||
# | vethX | --------- | vethY |
|
||||
# ----------- peer ----------
|
||||
# | | |
|
||||
# namespaceX | namespaceY
|
||||
#
|
||||
# AF_XDP is an address family optimized for high performance packet processing,
|
||||
# it is XDP’s user-space interface.
|
||||
#
|
||||
# An AF_XDP socket is linked to a single UMEM which is a region of virtual
|
||||
# contiguous memory, divided into equal-sized frames.
|
||||
#
|
||||
# Refer to AF_XDP Kernel Documentation for detailed information:
|
||||
# https://www.kernel.org/doc/html/latest/networking/af_xdp.html
|
||||
#
|
||||
# Prerequisites setup by script:
|
||||
#
|
||||
# Set up veth interfaces as per the topology shown ^^:
|
||||
# * setup two veth interfaces and one namespace
|
||||
# ** veth<xxxx> in root namespace
|
||||
# ** veth<yyyy> in af_xdp<xxxx> namespace
|
||||
# ** namespace af_xdp<xxxx>
|
||||
# * create a spec file veth.spec that includes this run-time configuration
|
||||
# *** xxxx and yyyy are randomly generated 4 digit numbers used to avoid
|
||||
# conflict with any existing interface
|
||||
# * tests the veth and xsk layers of the topology
|
||||
#
|
||||
# Kernel configuration:
|
||||
# ---------------------
|
||||
# See "config" file for recommended kernel config options.
|
||||
#
|
||||
# Turn on XDP sockets and veth support when compiling i.e.
|
||||
# Networking support -->
|
||||
# Networking options -->
|
||||
# [ * ] XDP sockets
|
||||
#
|
||||
# Executing Tests:
|
||||
# ----------------
|
||||
# Must run with CAP_NET_ADMIN capability.
|
||||
#
|
||||
# Run (full color-coded output):
|
||||
# sudo ./test_xsk.sh -c
|
||||
#
|
||||
# If running from kselftests:
|
||||
# sudo make colorconsole=1 run_tests
|
||||
#
|
||||
# Run (full output without color-coding):
|
||||
# sudo ./test_xsk.sh
|
||||
|
||||
. xsk_prereqs.sh
|
||||
|
||||
while getopts c flag
|
||||
do
|
||||
case "${flag}" in
|
||||
c) colorconsole=1;;
|
||||
esac
|
||||
done
|
||||
|
||||
TEST_NAME="PREREQUISITES"
|
||||
|
||||
URANDOM=/dev/urandom
|
||||
[ ! -e "${URANDOM}" ] && { echo "${URANDOM} not found. Skipping tests."; test_exit 1 1; }
|
||||
|
||||
VETH0_POSTFIX=$(cat ${URANDOM} | tr -dc '0-9' | fold -w 256 | head -n 1 | head --bytes 4)
|
||||
VETH0=ve${VETH0_POSTFIX}
|
||||
VETH1_POSTFIX=$(cat ${URANDOM} | tr -dc '0-9' | fold -w 256 | head -n 1 | head --bytes 4)
|
||||
VETH1=ve${VETH1_POSTFIX}
|
||||
NS0=root
|
||||
NS1=af_xdp${VETH1_POSTFIX}
|
||||
MTU=1500
|
||||
|
||||
setup_vethPairs() {
|
||||
echo "setting up ${VETH0}: namespace: ${NS0}"
|
||||
ip netns add ${NS1}
|
||||
ip link add ${VETH0} type veth peer name ${VETH1}
|
||||
if [ -f /proc/net/if_inet6 ]; then
|
||||
echo 1 > /proc/sys/net/ipv6/conf/${VETH0}/disable_ipv6
|
||||
fi
|
||||
echo "setting up ${VETH1}: namespace: ${NS1}"
|
||||
ip link set ${VETH1} netns ${NS1}
|
||||
ip netns exec ${NS1} ip link set ${VETH1} mtu ${MTU}
|
||||
ip link set ${VETH0} mtu ${MTU}
|
||||
ip netns exec ${NS1} ip link set ${VETH1} up
|
||||
ip link set ${VETH0} up
|
||||
}
|
||||
|
||||
validate_root_exec
|
||||
validate_veth_support ${VETH0}
|
||||
validate_ip_utility
|
||||
setup_vethPairs
|
||||
|
||||
retval=$?
|
||||
if [ $retval -ne 0 ]; then
|
||||
test_status $retval "${TEST_NAME}"
|
||||
cleanup_exit ${VETH0} ${VETH1} ${NS1}
|
||||
exit $retval
|
||||
fi
|
||||
|
||||
echo "${VETH0}:${VETH1},${NS1}" > ${SPECFILE}
|
||||
|
||||
validate_veth_spec_file
|
||||
|
||||
echo "Spec file created: ${SPECFILE}"
|
||||
|
||||
test_status $retval "${TEST_NAME}"
|
||||
|
||||
## START TESTS
|
||||
|
||||
statusList=()
|
||||
|
||||
### TEST 1
|
||||
TEST_NAME="XSK KSELFTEST FRAMEWORK"
|
||||
|
||||
echo "Switching interfaces [${VETH0}, ${VETH1}] to XDP Generic mode"
|
||||
vethXDPgeneric ${VETH0} ${VETH1} ${NS1}
|
||||
|
||||
retval=$?
|
||||
if [ $retval -eq 0 ]; then
|
||||
echo "Switching interfaces [${VETH0}, ${VETH1}] to XDP Native mode"
|
||||
vethXDPnative ${VETH0} ${VETH1} ${NS1}
|
||||
fi
|
||||
|
||||
retval=$?
|
||||
test_status $retval "${TEST_NAME}"
|
||||
statusList+=($retval)
|
||||
|
||||
## END TESTS
|
||||
|
||||
cleanup_exit ${VETH0} ${VETH1} ${NS1}
|
||||
|
||||
for _status in "${statusList[@]}"
|
||||
do
|
||||
if [ $_status -ne 0 ]; then
|
||||
test_exit $ksft_fail 0
|
||||
fi
|
||||
done
|
||||
|
||||
test_exit $ksft_pass 0
|
||||
119
tools/testing/selftests/bpf/xsk_prereqs.sh
Executable file
119
tools/testing/selftests/bpf/xsk_prereqs.sh
Executable file
@ -0,0 +1,119 @@
|
||||
#!/bin/bash
|
||||
# SPDX-License-Identifier: GPL-2.0
|
||||
# Copyright(c) 2020 Intel Corporation.
|
||||
|
||||
ksft_pass=0
|
||||
ksft_fail=1
|
||||
ksft_xfail=2
|
||||
ksft_xpass=3
|
||||
ksft_skip=4
|
||||
|
||||
GREEN='\033[0;92m'
|
||||
YELLOW='\033[0;93m'
|
||||
RED='\033[0;31m'
|
||||
NC='\033[0m'
|
||||
STACK_LIM=131072
|
||||
SPECFILE=veth.spec
|
||||
|
||||
validate_root_exec()
|
||||
{
|
||||
msg="skip all tests:"
|
||||
if [ $UID != 0 ]; then
|
||||
echo $msg must be run as root >&2
|
||||
test_exit $ksft_fail 2
|
||||
else
|
||||
return $ksft_pass
|
||||
fi
|
||||
}
|
||||
|
||||
validate_veth_support()
|
||||
{
|
||||
msg="skip all tests:"
|
||||
if [ $(ip link add $1 type veth 2>/dev/null; echo $?;) != 0 ]; then
|
||||
echo $msg veth kernel support not available >&2
|
||||
test_exit $ksft_skip 1
|
||||
else
|
||||
ip link del $1
|
||||
return $ksft_pass
|
||||
fi
|
||||
}
|
||||
|
||||
validate_veth_spec_file()
|
||||
{
|
||||
if [ ! -f ${SPECFILE} ]; then
|
||||
test_exit $ksft_skip 1
|
||||
fi
|
||||
}
|
||||
|
||||
test_status()
|
||||
{
|
||||
statusval=$1
|
||||
if [ -n "${colorconsole+set}" ]; then
|
||||
if [ $statusval -eq 2 ]; then
|
||||
echo -e "${YELLOW}$2${NC}: [ ${RED}FAIL${NC} ]"
|
||||
elif [ $statusval -eq 1 ]; then
|
||||
echo -e "${YELLOW}$2${NC}: [ ${RED}SKIPPED${NC} ]"
|
||||
elif [ $statusval -eq 0 ]; then
|
||||
echo -e "${YELLOW}$2${NC}: [ ${GREEN}PASS${NC} ]"
|
||||
fi
|
||||
else
|
||||
if [ $statusval -eq 2 ]; then
|
||||
echo -e "$2: [ FAIL ]"
|
||||
elif [ $statusval -eq 1 ]; then
|
||||
echo -e "$2: [ SKIPPED ]"
|
||||
elif [ $statusval -eq 0 ]; then
|
||||
echo -e "$2: [ PASS ]"
|
||||
fi
|
||||
fi
|
||||
}
|
||||
|
||||
test_exit()
|
||||
{
|
||||
retval=$1
|
||||
if [ $2 -ne 0 ]; then
|
||||
test_status $2 $(basename $0)
|
||||
fi
|
||||
exit $retval
|
||||
}
|
||||
|
||||
clear_configs()
|
||||
{
|
||||
if [ $(ip netns show | grep $3 &>/dev/null; echo $?;) == 0 ]; then
|
||||
[ $(ip netns exec $3 ip link show $2 &>/dev/null; echo $?;) == 0 ] &&
|
||||
{ echo "removing link $1:$2"; ip netns exec $3 ip link del $2; }
|
||||
echo "removing ns $3"
|
||||
ip netns del $3
|
||||
fi
|
||||
#Once we delete a veth pair node, the entire veth pair is removed,
|
||||
#this is just to be cautious just incase the NS does not exist then
|
||||
#veth node inside NS won't get removed so we explicitly remove it
|
||||
[ $(ip link show $1 &>/dev/null; echo $?;) == 0 ] &&
|
||||
{ echo "removing link $1"; ip link del $1; }
|
||||
if [ -f ${SPECFILE} ]; then
|
||||
echo "removing spec file:" ${SPECFILE}
|
||||
rm -f ${SPECFILE}
|
||||
fi
|
||||
}
|
||||
|
||||
cleanup_exit()
|
||||
{
|
||||
echo "cleaning up..."
|
||||
clear_configs $1 $2 $3
|
||||
}
|
||||
|
||||
validate_ip_utility()
|
||||
{
|
||||
[ ! $(type -P ip) ] && { echo "'ip' not found. Skipping tests."; test_exit $ksft_skip 1; }
|
||||
}
|
||||
|
||||
vethXDPgeneric()
|
||||
{
|
||||
ip link set dev $1 xdpdrv off
|
||||
ip netns exec $3 ip link set dev $2 xdpdrv off
|
||||
}
|
||||
|
||||
vethXDPnative()
|
||||
{
|
||||
ip link set dev $1 xdpgeneric off
|
||||
ip netns exec $3 ip link set dev $2 xdpgeneric off
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user