669 lines
25 KiB
Bash
Executable File
669 lines
25 KiB
Bash
Executable File
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0+
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#
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# Author: Justin Iurman <justin.iurman@uliege.be>
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#
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# This script evaluates the IOAM insertion for IPv6 by checking the IOAM data
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# consistency directly inside packets on the receiver side. Tests are divided
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# into three categories: OUTPUT (evaluates the IOAM processing by the sender),
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# INPUT (evaluates the IOAM processing by the receiver) and GLOBAL (evaluates
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# wider use cases that do not fall into the other two categories). Both OUTPUT
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# and INPUT tests only use a two-node topology (alpha and beta), while GLOBAL
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# tests use the entire three-node topology (alpha, beta, gamma). Each test is
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# documented inside its own handler in the code below.
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#
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# An IOAM domain is configured from Alpha to Gamma but not on the reverse path.
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# When either Beta or Gamma is the destination (depending on the test category),
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# Alpha adds an IOAM option (Pre-allocated Trace) inside a Hop-by-hop.
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#
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#
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# +-------------------+ +-------------------+
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# | | | |
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# | Alpha netns | | Gamma netns |
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# | | | |
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# | +-------------+ | | +-------------+ |
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# | | veth0 | | | | veth0 | |
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# | | db01::2/64 | | | | db02::2/64 | |
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# | +-------------+ | | +-------------+ |
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# | . | | . |
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# +-------------------+ +-------------------+
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# . .
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# . .
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# . .
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# +----------------------------------------------------+
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# | . . |
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# | +-------------+ +-------------+ |
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# | | veth0 | | veth1 | |
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# | | db01::1/64 | ................ | db02::1/64 | |
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# | +-------------+ +-------------+ |
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# | |
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# | Beta netns |
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# | |
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# +----------------------------------------------------+
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#
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#
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#
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# =============================================================
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# | Alpha - IOAM configuration |
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# +===========================================================+
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# | Node ID | 1 |
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# +-----------------------------------------------------------+
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# | Node Wide ID | 11111111 |
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# +-----------------------------------------------------------+
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# | Ingress ID | 0xffff (default value) |
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# +-----------------------------------------------------------+
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# | Ingress Wide ID | 0xffffffff (default value) |
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# +-----------------------------------------------------------+
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# | Egress ID | 101 |
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# +-----------------------------------------------------------+
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# | Egress Wide ID | 101101 |
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# +-----------------------------------------------------------+
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# | Namespace Data | 0xdeadbee0 |
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# +-----------------------------------------------------------+
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# | Namespace Wide Data | 0xcafec0caf00dc0de |
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# +-----------------------------------------------------------+
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# | Schema ID | 777 |
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# +-----------------------------------------------------------+
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# | Schema Data | something that will be 4n-aligned |
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# +-----------------------------------------------------------+
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#
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#
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# =============================================================
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# | Beta - IOAM configuration |
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# +===========================================================+
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# | Node ID | 2 |
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# +-----------------------------------------------------------+
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# | Node Wide ID | 22222222 |
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# +-----------------------------------------------------------+
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# | Ingress ID | 201 |
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# +-----------------------------------------------------------+
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# | Ingress Wide ID | 201201 |
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# +-----------------------------------------------------------+
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# | Egress ID | 202 |
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# +-----------------------------------------------------------+
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# | Egress Wide ID | 202202 |
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# +-----------------------------------------------------------+
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# | Namespace Data | 0xdeadbee1 |
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# +-----------------------------------------------------------+
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# | Namespace Wide Data | 0xcafec0caf11dc0de |
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# +-----------------------------------------------------------+
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# | Schema ID | 666 |
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# +-----------------------------------------------------------+
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# | Schema Data | Hello there -Obi |
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# +-----------------------------------------------------------+
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#
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#
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# =============================================================
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# | Gamma - IOAM configuration |
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# +===========================================================+
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# | Node ID | 3 |
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# +-----------------------------------------------------------+
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# | Node Wide ID | 33333333 |
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# +-----------------------------------------------------------+
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# | Ingress ID | 301 |
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# +-----------------------------------------------------------+
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# | Ingress Wide ID | 301301 |
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# +-----------------------------------------------------------+
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# | Egress ID | 0xffff (default value) |
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# +-----------------------------------------------------------+
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# | Egress Wide ID | 0xffffffff (default value) |
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# +-----------------------------------------------------------+
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# | Namespace Data | 0xdeadbee2 |
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# +-----------------------------------------------------------+
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# | Namespace Wide Data | 0xcafec0caf22dc0de |
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# +-----------------------------------------------------------+
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# | Schema ID | 0xffffff (= None) |
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# +-----------------------------------------------------------+
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# | Schema Data | |
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# +-----------------------------------------------------------+
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################################################################################
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# #
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# WARNING: Be careful if you modify the block below - it MUST be kept #
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# synchronized with configurations inside ioam6_parser.c and always #
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# reflect the same. #
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# #
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################################################################################
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ALPHA=(
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1 # ID
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11111111 # Wide ID
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0xffff # Ingress ID
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0xffffffff # Ingress Wide ID
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101 # Egress ID
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101101 # Egress Wide ID
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0xdeadbee0 # Namespace Data
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0xcafec0caf00dc0de # Namespace Wide Data
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777 # Schema ID (0xffffff = None)
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"something that will be 4n-aligned" # Schema Data
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)
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BETA=(
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2
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22222222
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201
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201201
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202
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202202
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0xdeadbee1
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0xcafec0caf11dc0de
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666
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"Hello there -Obi"
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)
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GAMMA=(
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3
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33333333
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301
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301301
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0xffff
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0xffffffff
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0xdeadbee2
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0xcafec0caf22dc0de
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0xffffff
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""
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)
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TESTS_OUTPUT="
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out_undef_ns
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out_no_room
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out_bits
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out_full_supp_trace
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"
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TESTS_INPUT="
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in_undef_ns
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in_no_room
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in_oflag
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in_bits
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in_full_supp_trace
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"
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TESTS_GLOBAL="
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fwd_full_supp_trace
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"
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################################################################################
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# #
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# LIBRARY #
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# #
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################################################################################
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check_kernel_compatibility()
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{
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ip netns add ioam-tmp-node
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ip link add name veth0 netns ioam-tmp-node type veth \
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peer name veth1 netns ioam-tmp-node
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ip -netns ioam-tmp-node link set veth0 up
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ip -netns ioam-tmp-node link set veth1 up
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ip -netns ioam-tmp-node ioam namespace add 0 &>/dev/null
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ns_ad=$?
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ip -netns ioam-tmp-node ioam namespace show | grep -q "namespace 0"
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ns_sh=$?
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if [[ $ns_ad != 0 || $ns_sh != 0 ]]
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then
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echo "SKIP: kernel version probably too old, missing ioam support"
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ip link del veth0 2>/dev/null || true
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ip netns del ioam-tmp-node || true
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exit 1
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fi
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ip -netns ioam-tmp-node route add db02::/64 encap ioam6 trace prealloc \
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type 0x800000 ns 0 size 4 dev veth0 &>/dev/null
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tr_ad=$?
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ip -netns ioam-tmp-node -6 route | grep -q "encap ioam6 trace"
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tr_sh=$?
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if [[ $tr_ad != 0 || $tr_sh != 0 ]]
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then
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echo "SKIP: cannot attach an ioam trace to a route, did you compile" \
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"without CONFIG_IPV6_IOAM6_LWTUNNEL?"
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ip link del veth0 2>/dev/null || true
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ip netns del ioam-tmp-node || true
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exit 1
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fi
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ip link del veth0 2>/dev/null || true
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ip netns del ioam-tmp-node || true
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}
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cleanup()
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{
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ip link del ioam-veth-alpha 2>/dev/null || true
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ip link del ioam-veth-gamma 2>/dev/null || true
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ip netns del ioam-node-alpha || true
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ip netns del ioam-node-beta || true
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ip netns del ioam-node-gamma || true
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}
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setup()
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{
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ip netns add ioam-node-alpha
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ip netns add ioam-node-beta
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ip netns add ioam-node-gamma
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ip link add name ioam-veth-alpha netns ioam-node-alpha type veth \
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peer name ioam-veth-betaL netns ioam-node-beta
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ip link add name ioam-veth-betaR netns ioam-node-beta type veth \
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peer name ioam-veth-gamma netns ioam-node-gamma
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ip -netns ioam-node-alpha link set ioam-veth-alpha name veth0
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ip -netns ioam-node-beta link set ioam-veth-betaL name veth0
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ip -netns ioam-node-beta link set ioam-veth-betaR name veth1
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ip -netns ioam-node-gamma link set ioam-veth-gamma name veth0
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ip -netns ioam-node-alpha addr add db01::2/64 dev veth0
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ip -netns ioam-node-alpha link set veth0 up
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ip -netns ioam-node-alpha link set lo up
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ip -netns ioam-node-alpha route add db02::/64 via db01::1 dev veth0
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ip -netns ioam-node-alpha route del db01::/64
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ip -netns ioam-node-alpha route add db01::/64 dev veth0
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ip -netns ioam-node-beta addr add db01::1/64 dev veth0
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ip -netns ioam-node-beta addr add db02::1/64 dev veth1
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ip -netns ioam-node-beta link set veth0 up
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ip -netns ioam-node-beta link set veth1 up
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ip -netns ioam-node-beta link set lo up
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ip -netns ioam-node-gamma addr add db02::2/64 dev veth0
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ip -netns ioam-node-gamma link set veth0 up
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ip -netns ioam-node-gamma link set lo up
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ip -netns ioam-node-gamma route add db01::/64 via db02::1 dev veth0
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# - IOAM config -
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ip netns exec ioam-node-alpha sysctl -wq net.ipv6.ioam6_id=${ALPHA[0]}
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ip netns exec ioam-node-alpha sysctl -wq net.ipv6.ioam6_id_wide=${ALPHA[1]}
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ip netns exec ioam-node-alpha sysctl -wq net.ipv6.conf.veth0.ioam6_id=${ALPHA[4]}
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ip netns exec ioam-node-alpha sysctl -wq net.ipv6.conf.veth0.ioam6_id_wide=${ALPHA[5]}
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ip -netns ioam-node-alpha ioam namespace add 123 data ${ALPHA[6]} wide ${ALPHA[7]}
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ip -netns ioam-node-alpha ioam schema add ${ALPHA[8]} "${ALPHA[9]}"
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ip -netns ioam-node-alpha ioam namespace set 123 schema ${ALPHA[8]}
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ip netns exec ioam-node-beta sysctl -wq net.ipv6.conf.all.forwarding=1
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ip netns exec ioam-node-beta sysctl -wq net.ipv6.ioam6_id=${BETA[0]}
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ip netns exec ioam-node-beta sysctl -wq net.ipv6.ioam6_id_wide=${BETA[1]}
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ip netns exec ioam-node-beta sysctl -wq net.ipv6.conf.veth0.ioam6_enabled=1
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ip netns exec ioam-node-beta sysctl -wq net.ipv6.conf.veth0.ioam6_id=${BETA[2]}
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ip netns exec ioam-node-beta sysctl -wq net.ipv6.conf.veth0.ioam6_id_wide=${BETA[3]}
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ip netns exec ioam-node-beta sysctl -wq net.ipv6.conf.veth1.ioam6_id=${BETA[4]}
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ip netns exec ioam-node-beta sysctl -wq net.ipv6.conf.veth1.ioam6_id_wide=${BETA[5]}
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ip -netns ioam-node-beta ioam namespace add 123 data ${BETA[6]} wide ${BETA[7]}
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ip -netns ioam-node-beta ioam schema add ${BETA[8]} "${BETA[9]}"
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ip -netns ioam-node-beta ioam namespace set 123 schema ${BETA[8]}
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ip netns exec ioam-node-gamma sysctl -wq net.ipv6.ioam6_id=${GAMMA[0]}
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ip netns exec ioam-node-gamma sysctl -wq net.ipv6.ioam6_id_wide=${GAMMA[1]}
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ip netns exec ioam-node-gamma sysctl -wq net.ipv6.conf.veth0.ioam6_enabled=1
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ip netns exec ioam-node-gamma sysctl -wq net.ipv6.conf.veth0.ioam6_id=${GAMMA[2]}
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ip netns exec ioam-node-gamma sysctl -wq net.ipv6.conf.veth0.ioam6_id_wide=${GAMMA[3]}
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ip -netns ioam-node-gamma ioam namespace add 123 data ${GAMMA[6]} wide ${GAMMA[7]}
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sleep 1
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ip netns exec ioam-node-alpha ping6 -c 5 -W 1 db02::2 &>/dev/null
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if [ $? != 0 ]
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then
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echo "Setup FAILED"
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cleanup &>/dev/null
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exit 0
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fi
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}
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log_test_passed()
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{
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local desc=$1
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printf "TEST: %-60s [ OK ]\n" "${desc}"
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}
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log_test_failed()
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{
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local desc=$1
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printf "TEST: %-60s [FAIL]\n" "${desc}"
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}
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run_test()
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{
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local name=$1
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local desc=$2
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local node_src=$3
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local node_dst=$4
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local ip6_src=$5
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local ip6_dst=$6
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local if_dst=$7
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local trace_type=$8
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local ioam_ns=$9
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ip netns exec $node_dst ./ioam6_parser $if_dst $name $ip6_src $ip6_dst \
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$trace_type $ioam_ns &
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local spid=$!
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sleep 0.1
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ip netns exec $node_src ping6 -t 64 -c 1 -W 1 $ip6_dst &>/dev/null
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if [ $? != 0 ]
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then
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log_test_failed "${desc}"
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kill -2 $spid &>/dev/null
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else
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wait $spid
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[ $? = 0 ] && log_test_passed "${desc}" || log_test_failed "${desc}"
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fi
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}
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run()
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{
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echo
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echo "OUTPUT tests"
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printf "%0.s-" {1..74}
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echo
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# set OUTPUT settings
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ip netns exec ioam-node-beta sysctl -wq net.ipv6.conf.veth0.ioam6_enabled=0
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for t in $TESTS_OUTPUT
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do
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$t
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done
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# clean OUTPUT settings
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ip netns exec ioam-node-beta sysctl -wq net.ipv6.conf.veth0.ioam6_enabled=1
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ip -netns ioam-node-alpha route change db01::/64 dev veth0
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echo
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echo "INPUT tests"
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printf "%0.s-" {1..74}
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echo
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# set INPUT settings
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ip -netns ioam-node-alpha ioam namespace del 123
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for t in $TESTS_INPUT
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do
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$t
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done
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# clean INPUT settings
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ip -netns ioam-node-alpha ioam namespace add 123 \
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data ${ALPHA[6]} wide ${ALPHA[7]}
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ip -netns ioam-node-alpha ioam namespace set 123 schema ${ALPHA[8]}
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ip -netns ioam-node-alpha route change db01::/64 dev veth0
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echo
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echo "GLOBAL tests"
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printf "%0.s-" {1..74}
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echo
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for t in $TESTS_GLOBAL
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do
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$t
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done
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}
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bit2type=(
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0x800000 0x400000 0x200000 0x100000 0x080000 0x040000 0x020000 0x010000
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0x008000 0x004000 0x002000 0x001000 0x000800 0x000400 0x000200 0x000100
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0x000080 0x000040 0x000020 0x000010 0x000008 0x000004 0x000002
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)
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bit2size=( 4 4 4 4 4 4 4 4 8 8 8 4 4 4 4 4 4 4 4 4 4 4 4 )
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################################################################################
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# #
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# OUTPUT tests #
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# #
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# Two nodes (sender/receiver), IOAM disabled on ingress for the receiver. #
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################################################################################
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out_undef_ns()
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{
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##############################################################################
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# Make sure that the encap node won't fill the trace if the chosen IOAM #
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# namespace is not configured locally. #
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##############################################################################
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local desc="Unknown IOAM namespace"
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ip -netns ioam-node-alpha route change db01::/64 encap ioam6 trace prealloc \
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type 0x800000 ns 0 size 4 dev veth0
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run_test ${FUNCNAME[0]} "${desc}" ioam-node-alpha ioam-node-beta db01::2 \
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db01::1 veth0 0x800000 0
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}
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out_no_room()
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{
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##############################################################################
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# Make sure that the encap node won't fill the trace and will set the #
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# Overflow flag since there is no room enough for its data. #
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##############################################################################
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local desc="Missing trace room"
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ip -netns ioam-node-alpha route change db01::/64 encap ioam6 trace prealloc \
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type 0xc00000 ns 123 size 4 dev veth0
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run_test ${FUNCNAME[0]} "${desc}" ioam-node-alpha ioam-node-beta db01::2 \
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db01::1 veth0 0xc00000 123
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}
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out_bits()
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{
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##############################################################################
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# Make sure that, for each trace type bit, the encap node will either: #
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# (i) fill the trace with its data when it is a supported bit #
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# (ii) not fill the trace with its data when it is an unsupported bit #
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##############################################################################
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local desc="Trace type with bit <n> only"
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local tmp=${bit2size[22]}
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bit2size[22]=$(( $tmp + ${#ALPHA[9]} + ((4 - (${#ALPHA[9]} % 4)) % 4) ))
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for i in {0..22}
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do
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ip -netns ioam-node-alpha route change db01::/64 encap ioam6 trace \
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prealloc type ${bit2type[$i]} ns 123 size ${bit2size[$i]} \
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dev veth0 &>/dev/null
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local cmd_res=$?
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local descr="${desc/<n>/$i}"
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if [[ $i -ge 12 && $i -le 21 ]]
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then
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if [ $cmd_res != 0 ]
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then
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npassed=$((npassed+1))
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log_test_passed "$descr"
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else
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nfailed=$((nfailed+1))
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log_test_failed "$descr"
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fi
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else
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run_test "out_bit$i" "$descr" ioam-node-alpha ioam-node-beta \
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db01::2 db01::1 veth0 ${bit2type[$i]} 123
|
|
fi
|
|
done
|
|
|
|
bit2size[22]=$tmp
|
|
}
|
|
|
|
out_full_supp_trace()
|
|
{
|
|
##############################################################################
|
|
# Make sure that the encap node will correctly fill a full trace. Be careful,#
|
|
# "full trace" here does NOT mean all bits (only supported ones). #
|
|
##############################################################################
|
|
local desc="Full supported trace"
|
|
|
|
ip -netns ioam-node-alpha route change db01::/64 encap ioam6 trace prealloc \
|
|
type 0xfff002 ns 123 size 100 dev veth0
|
|
|
|
run_test ${FUNCNAME[0]} "${desc}" ioam-node-alpha ioam-node-beta db01::2 \
|
|
db01::1 veth0 0xfff002 123
|
|
}
|
|
|
|
|
|
################################################################################
|
|
# #
|
|
# INPUT tests #
|
|
# #
|
|
# Two nodes (sender/receiver), the sender MUST NOT fill the trace upon #
|
|
# insertion -> the IOAM namespace configured on the sender is removed #
|
|
# and is used in the inserted trace to force the sender not to fill it. #
|
|
################################################################################
|
|
|
|
in_undef_ns()
|
|
{
|
|
##############################################################################
|
|
# Make sure that the receiving node won't fill the trace if the related IOAM #
|
|
# namespace is not configured locally. #
|
|
##############################################################################
|
|
local desc="Unknown IOAM namespace"
|
|
|
|
ip -netns ioam-node-alpha route change db01::/64 encap ioam6 trace prealloc \
|
|
type 0x800000 ns 0 size 4 dev veth0
|
|
|
|
run_test ${FUNCNAME[0]} "${desc}" ioam-node-alpha ioam-node-beta db01::2 \
|
|
db01::1 veth0 0x800000 0
|
|
}
|
|
|
|
in_no_room()
|
|
{
|
|
##############################################################################
|
|
# Make sure that the receiving node won't fill the trace and will set the #
|
|
# Overflow flag if there is no room enough for its data. #
|
|
##############################################################################
|
|
local desc="Missing trace room"
|
|
|
|
ip -netns ioam-node-alpha route change db01::/64 encap ioam6 trace prealloc \
|
|
type 0xc00000 ns 123 size 4 dev veth0
|
|
|
|
run_test ${FUNCNAME[0]} "${desc}" ioam-node-alpha ioam-node-beta db01::2 \
|
|
db01::1 veth0 0xc00000 123
|
|
}
|
|
|
|
in_bits()
|
|
{
|
|
##############################################################################
|
|
# Make sure that, for each trace type bit, the receiving node will either: #
|
|
# (i) fill the trace with its data when it is a supported bit #
|
|
# (ii) not fill the trace with its data when it is an unsupported bit #
|
|
##############################################################################
|
|
local desc="Trace type with bit <n> only"
|
|
|
|
local tmp=${bit2size[22]}
|
|
bit2size[22]=$(( $tmp + ${#BETA[9]} + ((4 - (${#BETA[9]} % 4)) % 4) ))
|
|
|
|
for i in {0..11} {22..22}
|
|
do
|
|
ip -netns ioam-node-alpha route change db01::/64 encap ioam6 trace \
|
|
prealloc type ${bit2type[$i]} ns 123 size ${bit2size[$i]} dev veth0
|
|
|
|
run_test "in_bit$i" "${desc/<n>/$i}" ioam-node-alpha ioam-node-beta \
|
|
db01::2 db01::1 veth0 ${bit2type[$i]} 123
|
|
done
|
|
|
|
bit2size[22]=$tmp
|
|
}
|
|
|
|
in_oflag()
|
|
{
|
|
##############################################################################
|
|
# Make sure that the receiving node won't fill the trace since the Overflow #
|
|
# flag is set. #
|
|
##############################################################################
|
|
local desc="Overflow flag is set"
|
|
|
|
# Exception:
|
|
# Here, we need the sender to set the Overflow flag. For that, we will add
|
|
# back the IOAM namespace that was previously configured on the sender.
|
|
ip -netns ioam-node-alpha ioam namespace add 123
|
|
|
|
ip -netns ioam-node-alpha route change db01::/64 encap ioam6 trace prealloc \
|
|
type 0xc00000 ns 123 size 4 dev veth0
|
|
|
|
run_test ${FUNCNAME[0]} "${desc}" ioam-node-alpha ioam-node-beta db01::2 \
|
|
db01::1 veth0 0xc00000 123
|
|
|
|
# And we clean the exception for this test to get things back to normal for
|
|
# other INPUT tests
|
|
ip -netns ioam-node-alpha ioam namespace del 123
|
|
}
|
|
|
|
in_full_supp_trace()
|
|
{
|
|
##############################################################################
|
|
# Make sure that the receiving node will correctly fill a full trace. Be #
|
|
# careful, "full trace" here does NOT mean all bits (only supported ones). #
|
|
##############################################################################
|
|
local desc="Full supported trace"
|
|
|
|
ip -netns ioam-node-alpha route change db01::/64 encap ioam6 trace prealloc \
|
|
type 0xfff002 ns 123 size 80 dev veth0
|
|
|
|
run_test ${FUNCNAME[0]} "${desc}" ioam-node-alpha ioam-node-beta db01::2 \
|
|
db01::1 veth0 0xfff002 123
|
|
}
|
|
|
|
|
|
################################################################################
|
|
# #
|
|
# GLOBAL tests #
|
|
# #
|
|
# Three nodes (sender/router/receiver), IOAM fully enabled on every node. #
|
|
################################################################################
|
|
|
|
fwd_full_supp_trace()
|
|
{
|
|
##############################################################################
|
|
# Make sure that all three nodes correctly filled the full supported trace #
|
|
# by checking that the trace data is consistent with the predefined config. #
|
|
##############################################################################
|
|
local desc="Forward - Full supported trace"
|
|
|
|
ip -netns ioam-node-alpha route change db02::/64 encap ioam6 trace prealloc \
|
|
type 0xfff002 ns 123 size 244 via db01::1 dev veth0
|
|
|
|
run_test ${FUNCNAME[0]} "${desc}" ioam-node-alpha ioam-node-gamma db01::2 \
|
|
db02::2 veth0 0xfff002 123
|
|
}
|
|
|
|
|
|
################################################################################
|
|
# #
|
|
# MAIN #
|
|
# #
|
|
################################################################################
|
|
|
|
if [ "$(id -u)" -ne 0 ]
|
|
then
|
|
echo "SKIP: Need root privileges"
|
|
exit 1
|
|
fi
|
|
|
|
if [ ! -x "$(command -v ip)" ]
|
|
then
|
|
echo "SKIP: Could not run test without ip tool"
|
|
exit 1
|
|
fi
|
|
|
|
ip ioam &>/dev/null
|
|
if [ $? = 1 ]
|
|
then
|
|
echo "SKIP: iproute2 too old, missing ioam command"
|
|
exit 1
|
|
fi
|
|
|
|
check_kernel_compatibility
|
|
|
|
cleanup &>/dev/null
|
|
setup
|
|
run
|
|
cleanup &>/dev/null
|