# AF_XDP selftests based on veth # # End-to-end AF_XDP over Veth test # # Topology: # --------- # ----------- # _ | Process | _ # / ----------- \ # / | \ # / | \ # ----------- | ----------- # | Thread1 | | | Thread2 | # ----------- | ----------- # | | | # ----------- | ----------- # | xskX | | | xskY | # ----------- | ----------- # | | | # ----------- | ---------- # | vethX | --------- | vethY | # ----------- peer ---------- # # 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 # ** veth<xxxx> # ** veth<yyyy> # *** 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 # # See the source xskxceiver.c for information on each test # # 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: # sudo ./test_xsk.sh # # If running from kselftests: # sudo make run_tests # # Run with verbose output: # sudo ./test_xsk.sh -v # # Set up veth interfaces and leave them up so xskxceiver can be launched in a debugger: # sudo ./test_xsk.sh -d # # Run test suite for physical device in loopback mode # sudo ./test_xsk.sh -i IFACE # # Run test suite in a specific mode only [skb,drv,zc] # sudo ./test_xsk.sh -m MODE # # List available tests # ./test_xsk.sh -l # # Run a specific test from the test suite # sudo ./test_xsk.sh -t TEST_NAME # # Display the available command line options # ./test_xsk.sh -h
. xsk_prereqs.sh
ETH=""
while getopts "vi:dm:lt:h" flag do
case "${flag}" in
v) verbose=1;;
d) debug=1;;
i) ETH=${OPTARG};;
m) MODE=${OPTARG};;
l) list=1;;
t) TEST=${OPTARG};;
h) help=1;;
esac done
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}
MTU=1500
trap ctrl_c INT
function ctrl_c() {
cleanup_exit ${VETH0} ${VETH1}
exit 1
}
setup_vethPairs() { if [[ $verbose -eq 1 ]]; then echo"setting up ${VETH0}" fi
ip link add ${VETH0} numtxqueues 4 numrxqueues 4 type veth peer name ${VETH1} numtxqueues 4 numrxqueues 4 if [ -f /proc/net/if_inet6 ]; then echo 1 > /proc/sys/net/ipv6/conf/${VETH0}/disable_ipv6 echo 1 > /proc/sys/net/ipv6/conf/${VETH1}/disable_ipv6 fi if [[ $verbose -eq 1 ]]; then echo"setting up ${VETH1}" fi
if [[ $busy_poll -eq 1 ]]; then echo 2 > /sys/class/net/${VETH0}/napi_defer_hard_irqs echo 200000 > /sys/class/net/${VETH0}/gro_flush_timeout echo 2 > /sys/class/net/${VETH1}/napi_defer_hard_irqs echo 200000 > /sys/class/net/${VETH1}/gro_flush_timeout fi
ip link set ${VETH1} mtu ${MTU}
ip link set ${VETH0} mtu ${MTU}
ip link set ${VETH1} up
ip link set ${VETH0} up
}
if [[ $list -eq 1 ]]; then
./${XSKOBJ} -l
exit fi
if [[ $help -eq 1 ]]; then
./${XSKOBJ}
exit fi
if [ ! -z $ETH ]; then
VETH0=${ETH}
VETH1=${ETH} else
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}
exit $retval fi fi
if [[ $verbose -eq 1 ]]; then
ARGS+="-v " fi
if [ -n "$MODE" ]; then
ARGS+="-m ${MODE} " fi
if [ -n "$TEST" ]; then
ARGS+="-t ${TEST} " fi
retval=$?
test_status $retval "${TEST_NAME}"
## START TESTS
statusList=()
TEST_NAME="XSK_SELFTESTS_${VETH0}_SOFTIRQ"
if [[ $debug -eq 1 ]]; then echo"-i" ${VETH0} "-i" ${VETH1}
exit fi
exec_xskxceiver
if [ -z $ETH ]; then
cleanup_exit ${VETH0} ${VETH1} else
cleanup_iface ${ETH} ${MTU} fi
if [ -z $ETH ]; then
setup_vethPairs fi
exec_xskxceiver
## END TESTS
if [ -z $ETH ]; then
cleanup_exit ${VETH0} ${VETH1} else
cleanup_iface ${ETH} ${MTU} fi
failures=0 echo -e "\nSummary:" for i in "${!statusList[@]}" do if [ ${statusList[$i]} -ne 0 ]; then
test_status ${statusList[$i]} ${nameList[$i]}
failures=1 fi done
if [ $failures -eq 0 ]; then echo"All tests successful!" else
exit 1 fi
Messung V0.5
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet)
¤
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.