mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-31 16:38:12 +00:00
7d20441eb0
Adds following tests:
1. AF_XDP SKB mode
d. Bi-directional Sockets
Configure sockets as bi-directional tx/rx sockets, sets up fill
and completion rings on each socket, tx/rx in both directions.
Only nopoll mode is used
2. AF_XDP DRV/Native mode
d. Bi-directional Sockets
* Only copy mode is supported because veth does not currently support
zero-copy mode
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/20201207215333.11586-6-weqaar.a.janjua@intel.com
259 lines
5.7 KiB
Bash
Executable file
259 lines
5.7 KiB
Bash
Executable file
#!/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:
|
||
# ---------
|
||
# -----------
|
||
# _ | Process | _
|
||
# / ----------- \
|
||
# / | \
|
||
# / | \
|
||
# ----------- | -----------
|
||
# | Thread1 | | | Thread2 |
|
||
# ----------- | -----------
|
||
# | | |
|
||
# ----------- | -----------
|
||
# | 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
|
||
#
|
||
# See the source xdpxceiver.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 (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)
|
||
|
||
### TEST 2
|
||
TEST_NAME="SKB NOPOLL"
|
||
|
||
vethXDPgeneric ${VETH0} ${VETH1} ${NS1}
|
||
|
||
params=("-S")
|
||
execxdpxceiver params
|
||
|
||
retval=$?
|
||
test_status $retval "${TEST_NAME}"
|
||
statusList+=($retval)
|
||
|
||
### TEST 3
|
||
TEST_NAME="SKB POLL"
|
||
|
||
vethXDPgeneric ${VETH0} ${VETH1} ${NS1}
|
||
|
||
params=("-S" "-p")
|
||
execxdpxceiver params
|
||
|
||
retval=$?
|
||
test_status $retval "${TEST_NAME}"
|
||
statusList+=($retval)
|
||
|
||
### TEST 4
|
||
TEST_NAME="DRV NOPOLL"
|
||
|
||
vethXDPnative ${VETH0} ${VETH1} ${NS1}
|
||
|
||
params=("-N")
|
||
execxdpxceiver params
|
||
|
||
retval=$?
|
||
test_status $retval "${TEST_NAME}"
|
||
statusList+=($retval)
|
||
|
||
### TEST 5
|
||
TEST_NAME="DRV POLL"
|
||
|
||
vethXDPnative ${VETH0} ${VETH1} ${NS1}
|
||
|
||
params=("-N" "-p")
|
||
execxdpxceiver params
|
||
|
||
retval=$?
|
||
test_status $retval "${TEST_NAME}"
|
||
statusList+=($retval)
|
||
|
||
### TEST 6
|
||
TEST_NAME="SKB SOCKET TEARDOWN"
|
||
|
||
vethXDPgeneric ${VETH0} ${VETH1} ${NS1}
|
||
|
||
params=("-S" "-T")
|
||
execxdpxceiver params
|
||
|
||
retval=$?
|
||
test_status $retval "${TEST_NAME}"
|
||
statusList+=($retval)
|
||
|
||
### TEST 7
|
||
TEST_NAME="DRV SOCKET TEARDOWN"
|
||
|
||
vethXDPnative ${VETH0} ${VETH1} ${NS1}
|
||
|
||
params=("-N" "-T")
|
||
execxdpxceiver params
|
||
|
||
retval=$?
|
||
test_status $retval "${TEST_NAME}"
|
||
statusList+=($retval)
|
||
|
||
### TEST 8
|
||
TEST_NAME="SKB BIDIRECTIONAL SOCKETS"
|
||
|
||
vethXDPgeneric ${VETH0} ${VETH1} ${NS1}
|
||
|
||
params=("-S" "-B")
|
||
execxdpxceiver params
|
||
|
||
retval=$?
|
||
test_status $retval "${TEST_NAME}"
|
||
statusList+=($retval)
|
||
|
||
### TEST 9
|
||
TEST_NAME="DRV BIDIRECTIONAL SOCKETS"
|
||
|
||
vethXDPnative ${VETH0} ${VETH1} ${NS1}
|
||
|
||
params=("-N" "-B")
|
||
execxdpxceiver params
|
||
|
||
retval=$?
|
||
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
|