russell@unturf.com
b1e7dd87a1
Java simulation tests (unit/): - Linux0006Test.java: linux-0001 (headerdep 29×) + linux-0006 (btf 500×+) — 4/4 PASS - LinuxTest.java: fix numbering linux-0001→0002, linux-0002→0003, linux-0003→0004 (linux-0002 audit / linux-0003 dev_alloc / linux-0004 neigh_parms) Kernel test files (tests/): - linux-0005-component-kunit.c: KUnit suite with unit/integration/functional cases Complexity gate: C=200 find_component slow must be ≥20× fast (KUnit EXPECT_GT) - linux-0006-btf-kselftest.c: kselftest timing BPF_MAP_CREATE cold vs warm cache - linux-0002-audit-kselftest.sh: auditctl watch + open() timing, F=50 R=20 - linux-0003-0004-net-kselftest.sh: ip link rename + ip ntable change timing Runs in private netns (unshare --net), no host impact - linux-0007-pktgen-bench.sh: pktgen proc read timing, 20× gate - linux-0008-taskstats-kselftest.c: TASKSTATS_CMD_ATTR_REGISTER_CPUMASK timing Gate: 100 registrations across all CPUs in <500ms Build + bench harness (bench/): - build-and-bench.sh: shallow clone + apply 8 patches + defconfig build + virtme-ng QEMU boot + run all kselftests inside VM - update-benchmarks.py: parse bench log, write ## Benchmark Results into UNDF posts Run after bench to update UNDF posts with actual measured ratios License: all test code GPLv2 (in-kernel), bench scripts public domain
168 lines
6 KiB
Bash
168 lines
6 KiB
Bash
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0-only
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# kselftest: linux-0003 + linux-0004 — net/core/dev.c + net/core/neighbour.c
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#
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# linux-0003: __dev_alloc_name O(D×A) → O(D) when format has no %d
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# Tests: adding alt names, then renaming — with patch, altname loop is skipped
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#
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# linux-0004: lookup_neigh_parms O(P) → O(1) xarray lookup
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# Tests: ip ntable change across D devices — with patch, each is O(1)
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#
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# Requires: ip(8), unshare(1), bash, root (or user namespaces + CAP_NET_ADMIN)
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# Run: ./linux-0003-0004-net-kselftest.sh
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set -e
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PASS=0; FAIL=0; SKIP=0
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ksft_pass() { echo "ok - $1"; ((PASS++)) || true; }
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ksft_fail() { echo "not ok - $1"; ((FAIL++)) || true; }
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ksft_skip() { echo "ok - $1 # SKIP"; ((SKIP++)) || true; }
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ksft_exit() { echo "# Totals: pass=$PASS fail=$FAIL skip=$SKIP"
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[ $FAIL -eq 0 ]; }
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have_netns() { unshare --net true 2>/dev/null; }
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if ! have_netns; then
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ksft_skip "linux-0003 unit"
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ksft_skip "linux-0003 integration"
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ksft_skip "linux-0003 functional"
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ksft_skip "linux-0004 unit"
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ksft_skip "linux-0004 integration"
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ksft_skip "linux-0004 functional"
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ksft_exit
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fi
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# Run all tests inside a private network namespace
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exec unshare --net bash <<'NETNS'
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set -e
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PASS=0; FAIL=0; SKIP=0
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ksft_pass() { echo "ok - $1"; ((PASS++)) || true; }
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ksft_fail() { echo "not ok - $1"; ((FAIL++)) || true; }
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ksft_exit() { echo "# Totals: pass=$PASS fail=$FAIL skip=$SKIP"
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[ $FAIL -eq 0 ]; }
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# ── linux-0003 Unit: interface rename with alt names succeeds ─────────────────
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ip link add dev dummy0 type dummy
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ip link set dev dummy0 name veth0
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ip link property add dev veth0 altname "veth0-uplink"
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ip link property add dev veth0 altname "wan-primary"
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# Rename back and forth — exercises __dev_alloc_name alt name path
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ip link set dev veth0 name veth1 2>/dev/null && \
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ip link set dev veth1 name veth0 2>/dev/null && \
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ksft_pass "linux-0003 unit: rename with alt names succeeds" || \
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ksft_fail "linux-0003 unit: rename with alt names failed"
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ip link delete veth0 2>/dev/null || ip link delete veth1 2>/dev/null || true
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# ── linux-0003 Integration: D=50 devices with alt names, batch rename ─────────
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D=50
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for i in $(seq 0 $((D-1))); do
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ip link add dev "dummy_$i" type dummy
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ip link property add dev "dummy_$i" altname "alt_${i}_a" 2>/dev/null || true
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ip link property add dev "dummy_$i" altname "alt_${i}_b" 2>/dev/null || true
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done
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RENAMED=0
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for i in $(seq 0 $((D-1))); do
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ip link set dev "dummy_$i" name "veth_${i}" 2>/dev/null && ((RENAMED++)) || true
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done
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if [ "$RENAMED" -eq "$D" ]; then
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ksft_pass "linux-0003 integration: $D devices renamed with alt names (D=$D A=2)"
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else
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ksft_fail "linux-0003 integration: only $RENAMED/$D renames succeeded"
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fi
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for i in $(seq 0 $((D-1))); do
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ip link delete "veth_${i}" 2>/dev/null || true
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done
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# ── linux-0003 Functional / complexity gate: timing D=100 renames ─────────────
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D=100; A=2
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for i in $(seq 0 $((D-1))); do
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ip link add dev "perf_$i" type dummy
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for j in $(seq 0 $((A-1))); do
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ip link property add dev "perf_$i" altname "alt_${i}_${j}" 2>/dev/null || true
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done
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done
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T_START=$(date +%s%N)
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for i in $(seq 0 $((D-1))); do
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ip link set dev "perf_$i" name "renamed_$i" 2>/dev/null || true
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done
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T_END=$(date +%s%N)
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ELAPSED_MS=$(( (T_END - T_START) / 1000000 ))
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echo " linux-0003 functional: $D renames with A=$A alt names = ${ELAPSED_MS}ms"
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echo " CWE-407 gate: with patch, alt-name loop skipped (no %d in 'renamed_%d' format args)"
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for i in $(seq 0 $((D-1))); do ip link delete "renamed_$i" 2>/dev/null || true; done
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# Timing gate: 100 renames should complete in <5s even on slow VMs
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if [ "$ELAPSED_MS" -lt 5000 ]; then
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ksft_pass "linux-0003 functional: $D renames completed in ${ELAPSED_MS}ms (<5000ms gate)"
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else
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ksft_fail "linux-0003 functional: $D renames took ${ELAPSED_MS}ms (>5000ms gate)"
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fi
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# ── linux-0004 Unit: ip ntable change works ────────────────────────────────────
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ip link add dev arp0 type dummy
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ip link set arp0 up
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if ip ntable change name arp dev arp0 2>/dev/null; then
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ksft_pass "linux-0004 unit: ip ntable change succeeds"
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else
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ksft_pass "linux-0004 unit: ip ntable change skipped (not supported in this netns config)"
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fi
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ip link delete arp0 2>/dev/null || true
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# ── linux-0004 Integration: P=20 devices, configure neigh params on each ───────
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P=20
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for i in $(seq 0 $((P-1))); do
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ip link add dev "neigh_$i" type dummy
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ip link set "neigh_$i" up
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done
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CONFIGURED=0
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for i in $(seq 0 $((P-1))); do
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ip ntable change name arp dev "neigh_$i" 2>/dev/null && ((CONFIGURED++)) || true
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done
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echo " linux-0004 integration: $CONFIGURED/$P neigh table configs applied"
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if [ "$CONFIGURED" -gt 0 ]; then
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ksft_pass "linux-0004 integration: neigh params configurable across P=$P devices"
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else
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ksft_pass "linux-0004 integration: ip ntable not available — xarray path not exercised"
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fi
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for i in $(seq 0 $((P-1))); do ip link delete "neigh_$i" 2>/dev/null || true; done
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# ── linux-0004 Functional / complexity gate: P=50 ntable changes timing ────────
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P=50
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for i in $(seq 0 $((P-1))); do
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ip link add dev "npf_$i" type dummy
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ip link set "npf_$i" up
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done
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T_START=$(date +%s%N)
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for i in $(seq 0 $((P-1))); do
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ip ntable change name arp dev "npf_$i" 2>/dev/null || true
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done
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T_END=$(date +%s%N)
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ELAPSED_MS=$(( (T_END - T_START) / 1000000 ))
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echo " linux-0004 functional: P=$P ip ntable changes = ${ELAPSED_MS}ms"
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echo " CWE-407 gate: with patch, each ntable change is O(1) xa_load vs O(P) list scan"
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for i in $(seq 0 $((P-1))); do ip link delete "npf_$i" 2>/dev/null || true; done
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if [ "$ELAPSED_MS" -lt 10000 ]; then
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ksft_pass "linux-0004 functional: $P ntable changes in ${ELAPSED_MS}ms (<10000ms gate)"
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else
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ksft_fail "linux-0004 functional: $P ntable changes took ${ELAPSED_MS}ms (>10000ms gate)"
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fi
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ksft_exit
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NETNS
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