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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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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
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# SPDX-License-Identifier: GPL-2.0
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# Copyright(c) 2020 Intel Corporation, Weqaar Janjua <weqaar.a.janjua@intel.com>
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# AF_XDP selftests based on veth
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#
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# End-to-end AF_XDP over Veth test
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#
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# Topology:
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# ---------
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# -----------
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# _ | Process | _
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# / ----------- \
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# / | \
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# / | \
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# ----------- | -----------
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# | Thread1 | | | Thread2 |
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# ----------- | -----------
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# | | |
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# ----------- | -----------
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# | xskX | | | xskY |
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# ----------- | -----------
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# | | |
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# ----------- | ----------
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# | vethX | --------- | vethY |
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# ----------- peer ----------
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# | | |
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# namespaceX | namespaceY
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#
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# AF_XDP is an address family optimized for high performance packet processing,
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# it is XDP’s user-space interface.
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#
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# An AF_XDP socket is linked to a single UMEM which is a region of virtual
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# contiguous memory, divided into equal-sized frames.
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#
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# Refer to AF_XDP Kernel Documentation for detailed information:
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# https://www.kernel.org/doc/html/latest/networking/af_xdp.html
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#
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# Prerequisites setup by script:
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#
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# Set up veth interfaces as per the topology shown ^^:
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# * setup two veth interfaces and one namespace
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# ** veth<xxxx> in root namespace
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# ** veth<yyyy> in af_xdp<xxxx> namespace
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# ** namespace af_xdp<xxxx>
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# * create a spec file veth.spec that includes this run-time configuration
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# *** xxxx and yyyy are randomly generated 4 digit numbers used to avoid
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# conflict with any existing interface
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# * tests the veth and xsk layers of the topology
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#
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# See the source xdpxceiver.c for information on each test
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#
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# Kernel configuration:
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# ---------------------
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# See "config" file for recommended kernel config options.
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#
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# Turn on XDP sockets and veth support when compiling i.e.
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# Networking support -->
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# Networking options -->
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# [ * ] XDP sockets
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#
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# Executing Tests:
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# ----------------
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# Must run with CAP_NET_ADMIN capability.
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#
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# Run (full color-coded output):
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# sudo ./test_xsk.sh -c
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#
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# If running from kselftests:
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# sudo make colorconsole=1 run_tests
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#
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# Run (full output without color-coding):
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# sudo ./test_xsk.sh
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. xsk_prereqs.sh
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while getopts c flag
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do
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case "${flag}" in
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c) colorconsole=1;;
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esac
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done
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TEST_NAME="PREREQUISITES"
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URANDOM=/dev/urandom
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[ ! -e "${URANDOM}" ] && { echo "${URANDOM} not found. Skipping tests."; test_exit 1 1; }
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VETH0_POSTFIX=$(cat ${URANDOM} | tr -dc '0-9' | fold -w 256 | head -n 1 | head --bytes 4)
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VETH0=ve${VETH0_POSTFIX}
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VETH1_POSTFIX=$(cat ${URANDOM} | tr -dc '0-9' | fold -w 256 | head -n 1 | head --bytes 4)
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VETH1=ve${VETH1_POSTFIX}
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NS0=root
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NS1=af_xdp${VETH1_POSTFIX}
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MTU=1500
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setup_vethPairs() {
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echo "setting up ${VETH0}: namespace: ${NS0}"
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ip netns add ${NS1}
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ip link add ${VETH0} type veth peer name ${VETH1}
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if [ -f /proc/net/if_inet6 ]; then
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echo 1 > /proc/sys/net/ipv6/conf/${VETH0}/disable_ipv6
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fi
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echo "setting up ${VETH1}: namespace: ${NS1}"
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ip link set ${VETH1} netns ${NS1}
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ip netns exec ${NS1} ip link set ${VETH1} mtu ${MTU}
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ip link set ${VETH0} mtu ${MTU}
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ip netns exec ${NS1} ip link set ${VETH1} up
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ip link set ${VETH0} up
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}
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validate_root_exec
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validate_veth_support ${VETH0}
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validate_ip_utility
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setup_vethPairs
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retval=$?
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if [ $retval -ne 0 ]; then
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test_status $retval "${TEST_NAME}"
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cleanup_exit ${VETH0} ${VETH1} ${NS1}
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exit $retval
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fi
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echo "${VETH0}:${VETH1},${NS1}" > ${SPECFILE}
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validate_veth_spec_file
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echo "Spec file created: ${SPECFILE}"
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test_status $retval "${TEST_NAME}"
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## START TESTS
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statusList=()
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### TEST 1
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TEST_NAME="XSK KSELFTEST FRAMEWORK"
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echo "Switching interfaces [${VETH0}, ${VETH1}] to XDP Generic mode"
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vethXDPgeneric ${VETH0} ${VETH1} ${NS1}
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retval=$?
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if [ $retval -eq 0 ]; then
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echo "Switching interfaces [${VETH0}, ${VETH1}] to XDP Native mode"
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vethXDPnative ${VETH0} ${VETH1} ${NS1}
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fi
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retval=$?
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test_status $retval "${TEST_NAME}"
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statusList+=($retval)
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### TEST 2
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TEST_NAME="SKB NOPOLL"
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vethXDPgeneric ${VETH0} ${VETH1} ${NS1}
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params=("-S")
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execxdpxceiver params
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retval=$?
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test_status $retval "${TEST_NAME}"
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statusList+=($retval)
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### TEST 3
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TEST_NAME="SKB POLL"
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vethXDPgeneric ${VETH0} ${VETH1} ${NS1}
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params=("-S" "-p")
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execxdpxceiver params
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retval=$?
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test_status $retval "${TEST_NAME}"
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statusList+=($retval)
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### TEST 4
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TEST_NAME="DRV NOPOLL"
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vethXDPnative ${VETH0} ${VETH1} ${NS1}
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params=("-N")
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execxdpxceiver params
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retval=$?
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test_status $retval "${TEST_NAME}"
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statusList+=($retval)
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### TEST 5
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TEST_NAME="DRV POLL"
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vethXDPnative ${VETH0} ${VETH1} ${NS1}
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params=("-N" "-p")
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execxdpxceiver params
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retval=$?
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test_status $retval "${TEST_NAME}"
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statusList+=($retval)
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### TEST 6
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TEST_NAME="SKB SOCKET TEARDOWN"
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vethXDPgeneric ${VETH0} ${VETH1} ${NS1}
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params=("-S" "-T")
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execxdpxceiver params
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retval=$?
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test_status $retval "${TEST_NAME}"
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statusList+=($retval)
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### TEST 7
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TEST_NAME="DRV SOCKET TEARDOWN"
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vethXDPnative ${VETH0} ${VETH1} ${NS1}
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params=("-N" "-T")
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execxdpxceiver params
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retval=$?
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test_status $retval "${TEST_NAME}"
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statusList+=($retval)
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### TEST 8
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TEST_NAME="SKB BIDIRECTIONAL SOCKETS"
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vethXDPgeneric ${VETH0} ${VETH1} ${NS1}
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params=("-S" "-B")
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execxdpxceiver params
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retval=$?
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test_status $retval "${TEST_NAME}"
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statusList+=($retval)
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### TEST 9
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TEST_NAME="DRV BIDIRECTIONAL SOCKETS"
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vethXDPnative ${VETH0} ${VETH1} ${NS1}
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params=("-N" "-B")
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execxdpxceiver params
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retval=$?
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test_status $retval "${TEST_NAME}"
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statusList+=($retval)
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## END TESTS
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cleanup_exit ${VETH0} ${VETH1} ${NS1}
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for _status in "${statusList[@]}"
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do
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if [ $_status -ne 0 ]; then
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test_exit $ksft_fail 0
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fi
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done
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test_exit $ksft_pass 0
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