NDP (Neighbor Discovery Protocol) by gspivey · Pull Request #59 · gspivey/dpdk-stdlib-rust

gspivey · 2026-05-20T12:46:27Z

Roadmap item

IPv6 task 6: NDP (Neighbor Discovery Protocol) — NdpHandler mirroring ArpHandler: Neighbor Solicitation and Neighbor Advertisement message types, atomic NDP cache with fast-path lookup, auto-resolution on send, gratuitous NA on bind, and seeding the cache from /proc/net/ipv6_neigh on Linux.

What's implemented

dpdk-udp/src/ndp.rs: Full NDP module (RFC 4861 §4.3, §4.4)
Parsing: parse_ndp_packet() — validates hop limit=255, ICMPv6 type 135/136, extracts link-layer address options
Building: build_neighbor_solicitation(), build_neighbor_advertisement(), build_gratuitous_na()
NdpCache: Thread-safe IPv6→MAC cache with atomic fast-path (two AtomicU64 for the 128-bit IPv6 address + one for MAC)
NdpHandler: Process incoming NS/NA, resolve addresses, generate solicitations, gratuitous NA on bind
Kernel seeding: parse_proc_ipv6_neigh() + seed_cache_from_proc() for importing from /proc/net/ipv6_neigh

Tests added

32 unit tests covering:

Build/parse roundtrips (NS, NA, gratuitous NA)
Solicited-node multicast addressing
Parse validation (short frames, wrong ethertype, wrong hop limit, wrong next header, wrong ICMPv6 type, nonzero code)
Cache operations (insert, lookup, fast-path, remove, clear, insert_if_changed)
Handler behavior (respond to NS for our IP, ignore others, learn from NS/NA, multiple IPs, resolve multicast)
/proc/net/ipv6_neigh parsing and cache seeding
Synthetic performance benchmarks (cache lookup, build NS, parse NS)

Tradeoffs

No extension header support in NDP parsing — RFC 4861 says NDP messages MUST NOT include extension headers between IPv6 and ICMPv6, so this is correct behavior
Cache uses two AtomicU64 for the fast-path IPv6 address (vs one AtomicU32 for ARP's IPv4) — necessary for 128-bit addresses
Does not integrate into UdpSocket RX path yet — that's part of IPv6 task 3 (SocketAddrV6 through UdpSocket)

Add dpdk-udp/src/ndp.rs implementing IPv6 Neighbor Discovery Protocol (RFC 4861) mirroring the existing ArpHandler pattern: - Neighbor Solicitation/Advertisement build and parse - NdpCache with atomic fast-path for single-peer steady state - NdpHandler: process NS/NA, resolve, make_solicitation, gratuitous NA - /proc/net/ipv6_neigh parsing and cache seeding - Synthetic performance tests for cache lookup, build, and parse 32 tests covering: roundtrip build/parse, validation edge cases, cache operations, handler behavior, proc parsing, and performance.

github-actions · 2026-05-20T12:48:23Z

[Perf] Stage: Deploy

Deploying PerfTestStack...
Configs: plain-rust,rust-dpdk,tokio-dpdk,native-dpdk
Packet sizes: 64,512,1400,8500

github-actions · 2026-05-20T12:58:07Z

[Perf] Stage: Instances Ready

TRex: i-07aeabd2afe73bf4d (10.0.1.36)
DUT: i-0f6fe2b7d9e77a6cf (10.0.1.246)
Instance type: unknown

github-actions · 2026-05-20T12:58:39Z

[Perf] Stage: TRex Config

Starting TRex configuration (MAC discovery + NIC binding)...

github-actions · 2026-05-20T12:59:07Z

[Perf] Stage: TRex Config OK

TX: 0000:00:06.0 MAC: 02:9f:17:e9:1c:27
RX: 0000:00:07.0 MAC: 02:10:54:77:15:03
Gateway MAC: 02:9f:1f:1e:36:93
Starting TRex server...

github-actions · 2026-05-20T13:00:02Z

[Perf] Stage: TRex Started

TRex server running. Beginning benchmarks...

github-actions · 2026-05-20T13:00:06Z

[Perf] DUT Ready

DUT instance i-0f6fe2b7d9e77a6cf SSM working, build complete.

github-actions · 2026-05-20T13:00:07Z

[Perf] Stage: Benchmark (1/4)

Running plain-rust benchmark...
Packet sizes: 64,512,1400,8500 | Duration: 30s/step | Target PPS: 70000,140000,350000,700000

github-actions · 2026-05-20T13:01:10Z

[Perf] Benchmark Diag: `plain-rust` preflight

TRex API OK: 2 ports
  Port 0: 02:9f:17:e9:1c:27
  Port 1: 02:10:54:77:15:03
PREFLIGHT_OK

github-actions · 2026-05-20T13:03:52Z

Synthetic Performance Results — Graviton (run)

Commit: ef30f48d

✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)
✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)
✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)
✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)
✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)
✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)
✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)
✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)

Synthetic UDP Performance Results

Measures framework overhead: sync dpdk_udp::UdpSocket vs async (std::sync::Mutex + try_recv_from).

Test	Payload	Sync PPS	Async PPS	Ratio (sync/async)	Async ns/op
TX send_to	64B	11.4M	11.1M	1.0x	89
RX recv_from	64B	3.6M	4.7M	0.8x	212
TX send_to	1400B	1.8M	1.8M	1.0x	558
RX recv_from	1400B	1.1M	1.2M	0.9x	831

Avg sync/async ratio: 0.9x, worst: 1.0x

Good: Async wrapper is within 1.0x of sync — minimal framework overhead.

github-actions · 2026-05-20T13:05:04Z

Synthetic Performance Results (run)

Commit: ef30f48d

✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)
✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)
✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)
✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)
✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)
✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)
✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)
✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)

Synthetic UDP Performance Results

Measures framework overhead: sync dpdk_udp::UdpSocket vs async (std::sync::Mutex + try_recv_from).

Test	Payload	Sync PPS	Async PPS	Ratio (sync/async)	Async ns/op
TX send_to	64B	14.7M	14.1M	1.0x	71
RX recv_from	64B	4.4M	5.7M	0.8x	175
TX send_to	1400B	2.1M	2.1M	1.0x	479
RX recv_from	1400B	1.3M	1.3M	0.9x	747

Avg sync/async ratio: 0.9x, worst: 1.0x

Good: Async wrapper is within 1.0x of sync — minimal framework overhead.

github-actions · 2026-05-20T13:09:49Z

[Perf] Benchmark Diag: `plain-rust` result

SSM exit: 0

Output (last 30 lines)

Duration per step: 30s
Source MAC: 02:9f:17:e9:1c:27

--- Packet size: 64B ---
  Target: 70,000 pps ... TX: 70,000 pps, RX: 69,000 pps, Drop: 1.4285%, Lat avg: 0.0 us
  Target: 140,000 pps ... TX: 140,000 pps, RX: 139,000 pps, Drop: 0.7143%, Lat avg: 0.0 us
  Target: 350,000 pps ... TX: 350,000 pps, RX: 348,979 pps, Drop: 0.2917%, Lat avg: 0.0 us
  Target: 700,000 pps ... TX: 700,000 pps, RX: 382,398 pps, Drop: 45.3717%, Lat avg: 0.0 us

--- Packet size: 512B ---
  Target: 70,000 pps ... TX: 70,000 pps, RX: 69,000 pps, Drop: 1.4286%, Lat avg: 0.0 us
  Target: 140,000 pps ... TX: 140,000 pps, RX: 139,000 pps, Drop: 0.7143%, Lat avg: 0.0 us
  Target: 350,000 pps ... TX: 350,000 pps, RX: 348,916 pps, Drop: 0.3099%, Lat avg: 0.0 us
  Target: 700,000 pps ... TX: 700,000 pps, RX: 431,308 pps, Drop: 38.3846%, Lat avg: 458.0 us

--- Packet size: 1400B ---
  Target: 70,000 pps ... TX: 70,000 pps, RX: 69,000 pps, Drop: 1.4291%, Lat avg: 0.0 us
  Target: 140,000 pps ... TX: 140,000 pps, RX: 139,000 pps, Drop: 0.7146%, Lat avg: 0.0 us
  Target: 350,000 pps ... TX: 350,000 pps, RX: 348,651 pps, Drop: 0.3854%, Lat avg: 256.0 us
  Target: 700,000 pps ... TX: 476,674 pps, RX: 437,947 pps, Drop: 8.1243%, Lat avg: 0.0 us

--- Packet size: 8500B ---
  (jumbo: capping at 418,133 pps for 30.0 Gbps limit)
  Target: 70,000 pps ... TX: 70,000 pps, RX: 36,107 pps, Drop: 48.4189%, Lat avg: 0.0 us
  Target: 140,000 pps ... TX: 78,354 pps, RX: 77,729 pps, Drop: 0.7976%, Lat avg: 0.0 us
  Target: 350,000 pps ... TX: 78,284 pps, RX: 77,893 pps, Drop: 0.4996%, Lat avg: 14320.0 us
  Target: 700,000 pps ... SKIPPED (exceeds 30.0 Gbps cap)

Results written to /tmp/perf-results/plain-rust.json
EXIT_CODE=0

github-actions · 2026-05-20T13:10:30Z

[Perf] Stage: Benchmark (2/4)

Running rust-dpdk benchmark...
Packet sizes: 64,512,1400,8500 | Duration: 30s/step | Target PPS: 70000,140000,350000,700000

github-actions · 2026-05-20T13:11:06Z

[CI] Stage: Deploy

Infrastructure ready.

Sender: i-0b6b2d1c66845223c (DPDK ENI: 10.0.1.49)
Receiver: i-0db445c86f28ae0bc (DPDK ENI: 10.0.1.201)
Both instances SSM-ready.

github-actions · 2026-05-20T13:11:41Z

[CI] Stage: Deploy

Infrastructure ready.

Sender: i-0cb78a419cd2e1fc9 (DPDK ENI: 10.0.1.74)
Receiver: i-06895a6bbea43f3c7 (DPDK ENI: 10.0.1.153)
Both instances SSM-ready.

github-actions · 2026-05-20T13:11:42Z

[Perf] Benchmark Diag: `rust-dpdk` preflight

TRex API OK: 2 ports
  Port 0: 02:9f:17:e9:1c:27
  Port 1: 02:10:54:77:15:03
PREFLIGHT_OK

github-actions · 2026-05-20T13:20:18Z

[Perf] Benchmark Diag: `rust-dpdk` result

SSM exit: 0

Output (last 30 lines)

Duration per step: 30s
Source MAC: 02:9f:17:e9:1c:27

--- Packet size: 64B ---
  Target: 70,000 pps ... TX: 70,000 pps, RX: 69,000 pps, Drop: 1.4286%, Lat avg: 0.0 us
  Target: 140,000 pps ... TX: 140,000 pps, RX: 139,000 pps, Drop: 0.7142%, Lat avg: 200.0 us
  Target: 350,000 pps ... TX: 350,000 pps, RX: 348,997 pps, Drop: 0.2866%, Lat avg: 0.0 us
  Target: 700,000 pps ... TX: 700,000 pps, RX: 697,788 pps, Drop: 0.316%, Lat avg: 381.0 us

--- Packet size: 512B ---
  Target: 70,000 pps ... TX: 70,000 pps, RX: 69,000 pps, Drop: 1.4286%, Lat avg: 0.0 us
  Target: 140,000 pps ... TX: 140,000 pps, RX: 139,000 pps, Drop: 0.7143%, Lat avg: 0.0 us
  Target: 350,000 pps ... TX: 350,000 pps, RX: 349,000 pps, Drop: 0.2857%, Lat avg: 0.0 us
  Target: 700,000 pps ... TX: 700,000 pps, RX: 696,778 pps, Drop: 0.4603%, Lat avg: 397.0 us

--- Packet size: 1400B ---
  Target: 70,000 pps ... TX: 70,000 pps, RX: 69,000 pps, Drop: 1.4286%, Lat avg: 300.0 us
  Target: 140,000 pps ... TX: 140,000 pps, RX: 139,000 pps, Drop: 0.7143%, Lat avg: 280.0 us
  Target: 350,000 pps ... TX: 350,000 pps, RX: 349,000 pps, Drop: 0.2857%, Lat avg: 0.0 us
  Target: 700,000 pps ... TX: 476,322 pps, RX: 475,607 pps, Drop: 0.15%, Lat avg: 2628.0 us

--- Packet size: 8500B ---
  (jumbo: capping at 418,133 pps for 30.0 Gbps limit)
  Target: 70,000 pps ... TX: 70,000 pps, RX: 69,000 pps, Drop: 1.4286%, Lat avg: 0.0 us
  Target: 140,000 pps ... TX: 78,289 pps, RX: 76,140 pps, Drop: 2.7456%, Lat avg: 0.0 us
  Target: 350,000 pps ... TX: 78,300 pps, RX: 77,675 pps, Drop: 0.7984%, Lat avg: 0.0 us
  Target: 700,000 pps ... SKIPPED (exceeds 30.0 Gbps cap)

Results written to /tmp/perf-results/rust-dpdk.json
EXIT_CODE=0

github-actions · 2026-05-20T13:21:07Z

[Perf] Stage: Benchmark (3/4)

Running tokio-dpdk benchmark...
Packet sizes: 64,512,1400,8500 | Duration: 30s/step | Target PPS: 70000,140000,350000,700000

github-actions · 2026-05-20T13:22:13Z

[Perf] Benchmark Diag: `tokio-dpdk` preflight

TRex API OK: 2 ports
  Port 0: 02:9f:17:e9:1c:27
  Port 1: 02:10:54:77:15:03
PREFLIGHT_OK

github-actions · 2026-05-20T13:26:55Z

[CI] Stage: Summary

All tests PASSED.

ARP seeding: kernel /proc/net/arp (automatic)

tier1-dpdk-echo: 6 tests, 0 failures
tier2-kernel-interop: 4 tests, 0 failures
tier3-iperf-interop: 1 tests, 0 failures
tier3-iperf-interop: 1 tests, 0 failures

github-actions · 2026-05-20T13:27:29Z

[CI] Stage: Summary

All tests PASSED.

ARP seeding: kernel /proc/net/arp (automatic)

tier1-dpdk-echo: 6 tests, 0 failures
tier2-kernel-interop: 4 tests, 0 failures
tier3-iperf-interop: 1 tests, 0 failures
tier3-iperf-interop: 1 tests, 0 failures

github-actions · 2026-05-20T13:29:23Z

✅ Integration Tests Passed — Graviton (run)

Branch: 59/merge | Commit: ef30f48d

Test Results

tier1-dpdk-echo.xml: 6 tests, 0 failures
tier2-kernel-interop.xml: 4 tests, 0 failures
tier3-iperf-sends.xml: 1 tests, 0 failures
tier3-our-app-sends.xml: 1 tests, 0 failures

Application Logs (last 20 lines)

receiver-echo-server.log

EAL: Detected CPU lcores: 2
EAL: Detected NUMA nodes: 1
EAL: Detected shared linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: VFIO support initialized
EAL: Using IOMMU type 8 (No-IOMMU)
EAL: Probe PCI driver: net_ena (1d0f:ec20) device: 0000:00:06.0 (socket -1)
TELEMETRY: No legacy callbacks, legacy socket not created
Warning: Some RX offloads not supported by device (flags: 0x1)
Warning: Some TX offloads not supported by device (flags: 0x1)
✅ DPDK UDP socket bound to 10.0.1.201:9000 (MAC: 02:99:da:45:c4:db)
echo listening on 10.0.1.201:9000 (MTU=9001, max_udp_payload=8973)
Shutting down gracefully...

sender-echo-server.log

EAL: Detected CPU lcores: 2
EAL: Detected NUMA nodes: 1
EAL: Detected shared linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: VFIO support initialized
EAL: Using IOMMU type 8 (No-IOMMU)
EAL: Probe PCI driver: net_ena (1d0f:ec20) device: 0000:00:06.0 (socket -1)
TELEMETRY: No legacy callbacks, legacy socket not created
Warning: Some RX offloads not supported by device (flags: 0x1)
Warning: Some TX offloads not supported by device (flags: 0x1)
✅ DPDK UDP socket bound to 10.0.1.49:9000 (MAC: 02:68:5f:79:fc:eb)
echo listening on 10.0.1.49:9000 (MTU=9001, max_udp_payload=8973)
Shutting down gracefully...

sender-test-client.log

EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: VFIO support initialized
TELEMETRY: No legacy callbacks, legacy socket not created
DPDK bind failed (Port init failed: Invalid port ID: 0), falling back to tokio
Backend: tokio
Sending packets...
Sent 12 bytes: 'arp-probe #1'
Received 12 bytes from 10.0.1.201:9000: 'arp-probe #1'
Test complete
[2026-05-20T13:15:26Z] INFO: ARP resolution succeeded (got response from peer)
[2026-05-20T13:15:26Z] INFO: Test: udp_send_receive
[2026-05-20T13:15:27Z] INFO: UDP send/receive succeeded
[2026-05-20T13:15:27Z] INFO: Test: echo_roundtrip
[2026-05-20T13:15:28Z] INFO: Echo roundtrip succeeded: 5/5 responses received
[2026-05-20T13:15:28Z] INFO: Test: payload_integrity
[2026-05-20T13:15:28Z] INFO: Response received, checking payload match...
[2026-05-20T13:15:28Z] INFO: Payload integrity verified (found in response)
[2026-05-20T13:15:28Z] INFO: JUnit XML written to: /tmp/test-results/tier2-kernel-interop.xml
[2026-05-20T13:15:28Z] INFO: Tier 2 sender tests complete. Results: /tmp/test-results/tier2-kernel-interop.xml

github-actions · 2026-05-20T13:30:34Z

✅ Integration Tests Passed (Run 26163443554)

Branch: 59/merge | Commit: ef30f48d

Test Results

tier1-dpdk-echo.xml: 6 tests, 0 failures, skipped
tier2-kernel-interop.xml: 4 tests, 0 failures, skipped
tier3-iperf-sends.xml: 1 tests, 0 failures, skipped
tier3-our-app-sends.xml: 1 tests, 0 failures, skipped

Application Logs (last 20 lines)

receiver-echo-server.log

EAL: Detected CPU lcores: 2
EAL: Detected NUMA nodes: 1
EAL: Detected shared linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: VFIO support initialized
EAL: Using IOMMU type 8 (No-IOMMU)
EAL: Probe PCI driver: net_ena (1d0f:ec20) device: 0000:00:06.0 (socket -1)
TELEMETRY: No legacy callbacks, legacy socket not created
Warning: Some RX offloads not supported by device (flags: 0x1)
Warning: Some TX offloads not supported by device (flags: 0x1)
✅ DPDK UDP socket bound to 10.0.1.153:9000 (MAC: 02:40:2f:e1:99:87)
echo listening on 10.0.1.153:9000 (MTU=9001, max_udp_payload=8973)
Shutting down gracefully...

sender-echo-server.log

EAL: Detected CPU lcores: 2
EAL: Detected NUMA nodes: 1
EAL: Detected shared linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: VFIO support initialized
EAL: Using IOMMU type 8 (No-IOMMU)
EAL: Probe PCI driver: net_ena (1d0f:ec20) device: 0000:00:06.0 (socket -1)
TELEMETRY: No legacy callbacks, legacy socket not created
Warning: Some RX offloads not supported by device (flags: 0x1)
Warning: Some TX offloads not supported by device (flags: 0x1)
✅ DPDK UDP socket bound to 10.0.1.74:9000 (MAC: 02:1b:d0:42:96:8b)
echo listening on 10.0.1.74:9000 (MTU=9001, max_udp_payload=8973)
Shutting down gracefully...

sender-test-client.log

EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: VFIO support initialized
TELEMETRY: No legacy callbacks, legacy socket not created
DPDK bind failed (Port init failed: Invalid port ID: 0), falling back to tokio
Backend: tokio
Sending packets...
Sent 12 bytes: 'arp-probe #1'
Received 12 bytes from 10.0.1.153:9000: 'arp-probe #1'
Test complete
[2026-05-20T13:16:46Z] INFO: ARP resolution succeeded (got response from peer)
[2026-05-20T13:16:46Z] INFO: Test: udp_send_receive
[2026-05-20T13:16:47Z] INFO: UDP send/receive succeeded
[2026-05-20T13:16:47Z] INFO: Test: echo_roundtrip
[2026-05-20T13:16:48Z] INFO: Echo roundtrip succeeded: 5/5 responses received
[2026-05-20T13:16:48Z] INFO: Test: payload_integrity
[2026-05-20T13:16:48Z] INFO: Response received, checking payload match...
[2026-05-20T13:16:48Z] INFO: Payload integrity verified (found in response)
[2026-05-20T13:16:48Z] INFO: JUnit XML written to: /tmp/test-results/tier2-kernel-interop.xml
[2026-05-20T13:16:48Z] INFO: Tier 2 sender tests complete. Results: /tmp/test-results/tier2-kernel-interop.xml

receiver-test-client-iperf.log

[2026-05-20T13:22:16Z] INFO: iperf-sends: sent 10 packets, received 10 responses
[2026-05-20T13:22:16Z] INFO: iperf-sends: PASS (sent >= 5 packets)
[2026-05-20T13:22:16Z] INFO: JUnit XML written to: /tmp/test-results/tier3-iperf-sends.xml
[2026-05-20T13:22:16Z] INFO: iperf-sends test complete

sender-test-client-iperf.log

Received 30 bytes from 10.0.1.153:9000: 'dpdk-to-kernel-test-payload #3'
Sent 30 bytes: 'dpdk-to-kernel-test-payload #4'
Received 30 bytes from 10.0.1.153:9000: 'dpdk-to-kernel-test-payload #4'
Sent 30 bytes: 'dpdk-to-kernel-test-payload #5'
Received 30 bytes from 10.0.1.153:9000: 'dpdk-to-kernel-test-payload #5'
Sent 30 bytes: 'dpdk-to-kernel-test-payload #6'
Received 30 bytes from 10.0.1.153:9000: 'dpdk-to-kernel-test-payload #6'
Sent 30 bytes: 'dpdk-to-kernel-test-payload #7'
Received 30 bytes from 10.0.1.153:9000: 'dpdk-to-kernel-test-payload #7'
Sent 30 bytes: 'dpdk-to-kernel-test-payload #8'
Received 30 bytes from 10.0.1.153:9000: 'dpdk-to-kernel-test-payload #8'
Sent 30 bytes: 'dpdk-to-kernel-test-payload #9'
Received 30 bytes from 10.0.1.153:9000: 'dpdk-to-kernel-test-payload #9'
Sent 31 bytes: 'dpdk-to-kernel-test-payload #10'
Received 31 bytes from 10.0.1.153:9000: 'dpdk-to-kernel-test-payload #10'
Test complete
[2026-05-20T13:21:15Z] INFO: our-app-sends: sent 10 packets, received 10 responses
[2026-05-20T13:21:15Z] INFO: our-app-sends: PASS (sent >= 5 packets)
[2026-05-20T13:21:15Z] INFO: JUnit XML written to: /tmp/test-results/tier3-our-app-sends.xml
[2026-05-20T13:21:15Z] INFO: our-app-sends test complete

Full Application Logs (last 200 lines each)

receiver-echo-server.log

EAL: Detected CPU lcores: 2
EAL: Detected NUMA nodes: 1
EAL: Detected shared linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: VFIO support initialized
EAL: Using IOMMU type 8 (No-IOMMU)
EAL: Probe PCI driver: net_ena (1d0f:ec20) device: 0000:00:06.0 (socket -1)
TELEMETRY: No legacy callbacks, legacy socket not created
Warning: Some RX offloads not supported by device (flags: 0x1)
Warning: Some TX offloads not supported by device (flags: 0x1)
✅ DPDK UDP socket bound to 10.0.1.153:9000 (MAC: 02:40:2f:e1:99:87)
echo listening on 10.0.1.153:9000 (MTU=9001, max_udp_payload=8973)
Shutting down gracefully...

sender-echo-server.log

EAL: Detected CPU lcores: 2
EAL: Detected NUMA nodes: 1
EAL: Detected shared linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: VFIO support initialized
EAL: Using IOMMU type 8 (No-IOMMU)
EAL: Probe PCI driver: net_ena (1d0f:ec20) device: 0000:00:06.0 (socket -1)
TELEMETRY: No legacy callbacks, legacy socket not created
Warning: Some RX offloads not supported by device (flags: 0x1)
Warning: Some TX offloads not supported by device (flags: 0x1)
✅ DPDK UDP socket bound to 10.0.1.74:9000 (MAC: 02:1b:d0:42:96:8b)
echo listening on 10.0.1.74:9000 (MTU=9001, max_udp_payload=8973)
Shutting down gracefully...

sender-test-client.log

[2026-05-20T13:13:01Z] INFO: Test: arp_resolution
UDP Test Client
Target: 10.0.1.153:9000
Bind address: 10.0.1.74:0
Message: 'arp-probe'
Count: 1
EAL: Detected CPU lcores: 2
EAL: Detected NUMA nodes: 1
EAL: Detected shared linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: VFIO support initialized
EAL: Using IOMMU type 8 (No-IOMMU)
EAL: Probe PCI driver: net_ena (1d0f:ec20) device: 0000:00:06.0 (socket -1)
TELEMETRY: No legacy callbacks, legacy socket not created
Warning: Some RX offloads not supported by device (flags: 0x1)
Warning: Some TX offloads not supported by device (flags: 0x1)
✅ DPDK UDP socket bound to 10.0.1.74:32768 (MAC: 02:1b:d0:42:96:8b)
Backend: dpdk
Sending packets...
Sent 12 bytes: 'arp-probe #1'
Received 12 bytes from 10.0.1.153:9000: 'arp-probe #1'
Test complete
[2026-05-20T13:13:02Z] INFO: ARP resolution succeeded (got response from peer)
[2026-05-20T13:13:02Z] INFO: Test: udp_send_receive
[2026-05-20T13:13:03Z] INFO: UDP send/receive succeeded
[2026-05-20T13:13:03Z] INFO: Test: echo_roundtrip
[2026-05-20T13:13:05Z] INFO: Echo roundtrip succeeded: 5/5 responses received
[2026-05-20T13:13:05Z] INFO: Test: payload_integrity
[2026-05-20T13:13:06Z] INFO: Response received, checking payload match...
[2026-05-20T13:13:06Z] INFO: Payload integrity verified (found in response)
[2026-05-20T13:13:06Z] INFO: Test: jumbo_diagnostics
[2026-05-20T13:13:06Z] INFO: === JUMBO FRAME DIAGNOSTICS ===
[2026-05-20T13:13:06Z] INFO: Interface MTU:
  9001
  65536
[2026-05-20T13:13:06Z] INFO:   ens5: MTU=9001
[2026-05-20T13:13:06Z] INFO:   lo: MTU=65536
[2026-05-20T13:13:06Z] INFO: Routing table MTU column:
Iface	Destination	Gateway 	Flags	RefCnt	Use	Metric	Mask		MTU	Window	IRTT                                                       
ens5	00000000	0101000A	0003	0	0	512	00000000	0	0	0                                                                             
ens5	0200000A	0101000A	0007	0	0	512	FFFFFFFF	0	0	0                                                                             
ens5	0001000A	00000000	0001	0	0	512	00FFFFFF	0	0	0                                                                             
ens5	0101000A	00000000	0005	0	0	512	FFFFFFFF	0	0	0                                                                             
[2026-05-20T13:13:06Z] INFO: DPDK port config (from echo server log):
[2026-05-20T13:13:06Z] INFO:   (no MTU info in echo log)
[2026-05-20T13:13:06Z] INFO: === END JUMBO DIAGNOSTICS ===
[2026-05-20T13:13:06Z] INFO: Test: jumbo_echo_8000
[2026-05-20T13:13:07Z] INFO: Jumbo output: UDP Test Client
Target: 10.0.1.153:9000
Bind address: 10.0.1.74:0
Payload size: 8000 bytes
Count: 3
EAL: Detected CPU lcores: 2
EAL: Detected NUMA nodes: 1
EAL: Detected shared linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: VFIO support initialized
EAL: Using IOMMU type 8 (No-IOMMU)
EAL: Probe PCI driver: net_ena (1d0f:ec20) device: 0000:00:06.0 (socket -1)
TELEMETRY: No legacy callbacks, legacy socket not created
Warning: Some RX offloads not supported by device (flags: 0x1)
Warning: Some TX offloads not supported by device (flags: 0x1)
✅ DPDK UDP socket bound to 10.0.1.74:32768 (MAC: 02:1b:d0:42:96:8b)
Backend: dpdk
Sending packets...
Sent 8000 bytes (binary payload)
Received 8000 bytes from 10.0.1.153:9000 (expected 8000, OK)
Sent 8000 bytes (binary payload)
Received 8000 bytes from 10.0.1.153:9000 (expected 8000, OK)
Sent 8000 bytes (binary payload)
Received 8000 bytes from 10.0.1.153:9000 (expected 8000, OK)
Test complete
[2026-05-20T13:13:07Z] INFO: Jumbo frame echo succeeded: 3/3 responses with correct size
[2026-05-20T13:13:07Z] INFO: JUnit XML written to: /tmp/test-results/tier1-dpdk-echo.xml
[2026-05-20T13:13:07Z] INFO: Tier 1 sender tests complete. Results: /tmp/test-results/tier1-dpdk-echo.xml
[2026-05-20T13:16:46Z] INFO: Test: arp_resolution
UDP Test Client
Target: 10.0.1.153:9000
Bind address: 0.0.0.0:0
Message: 'arp-probe'
Count: 1
EAL: Detected CPU lcores: 2
EAL: Detected NUMA nodes: 1
EAL: Detected shared linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: VFIO support initialized
TELEMETRY: No legacy callbacks, legacy socket not created
DPDK bind failed (Port init failed: Invalid port ID: 0), falling back to tokio
Backend: tokio
Sending packets...
Sent 12 bytes: 'arp-probe #1'
Received 12 bytes from 10.0.1.153:9000: 'arp-probe #1'
Test complete
[2026-05-20T13:16:46Z] INFO: ARP resolution succeeded (got response from peer)
[2026-05-20T13:16:46Z] INFO: Test: udp_send_receive
[2026-05-20T13:16:47Z] INFO: UDP send/receive succeeded
[2026-05-20T13:16:47Z] INFO: Test: echo_roundtrip
[2026-05-20T13:16:48Z] INFO: Echo roundtrip succeeded: 5/5 responses received
[2026-05-20T13:16:48Z] INFO: Test: payload_integrity
[2026-05-20T13:16:48Z] INFO: Response received, checking payload match...
[2026-05-20T13:16:48Z] INFO: Payload integrity verified (found in response)
[2026-05-20T13:16:48Z] INFO: JUnit XML written to: /tmp/test-results/tier2-kernel-interop.xml
[2026-05-20T13:16:48Z] INFO: Tier 2 sender tests complete. Results: /tmp/test-results/tier2-kernel-interop.xml

receiver-test-client-iperf.log

[2026-05-20T13:22:16Z] INFO: iperf-sends: sent 10 packets, received 10 responses
[2026-05-20T13:22:16Z] INFO: iperf-sends: PASS (sent >= 5 packets)
[2026-05-20T13:22:16Z] INFO: JUnit XML written to: /tmp/test-results/tier3-iperf-sends.xml
[2026-05-20T13:22:16Z] INFO: iperf-sends test complete

sender-test-client-iperf.log

[2026-05-20T13:21:13Z] INFO: Pre-flight: checking DPDK state and ARP cache...
[2026-05-20T13:21:13Z] INFO: Local IP: 10.0.1.74, Peer IP: 10.0.1.153, Port: 9000
[2026-05-20T13:21:13Z] INFO: /proc/net/arp contents:
IP address       HW type     Flags       HW address            Mask     Device
10.0.1.15        0x1         0x2         02:f0:ba:af:ba:8d     *        ens5
10.0.1.207       0x1         0x2         02:c1:39:54:01:51     *        ens5
10.0.1.1         0x1         0x2         02:82:fd:37:5b:1d     *        ens5
10.0.1.153       0x1         0x2         02:40:2f:e1:99:87     *        ens5
10.0.1.74        0x1         0x2         02:1b:d0:42:96:8b     *        ens5
[2026-05-20T13:21:13Z] INFO: DPDK runtime state:
No /var/run/dpdk/ directory
[2026-05-20T13:21:13Z] INFO: vfio-pci bindings:
0000:00:06.0
bind
module
new_id
remove_id
uevent
unbind
[2026-05-20T13:21:13Z] INFO: Test binary: /opt/dpdk-stdlib/target/release/test-client
-rwxr-xr-x. 2 root root 1905056 May 20 13:11 /opt/dpdk-stdlib/target/release/test-client
[2026-05-20T13:21:13Z] INFO: Launching test-client: /opt/dpdk-stdlib/target/release/test-client --target 10.0.1.153 --port 9000 --bind-ip 10.0.1.74 --count 10 --delay 200
[2026-05-20T13:21:15Z] INFO: Test client output: UDP Test Client
Target: 10.0.1.153:9000
Bind address: 10.0.1.74:0
Message: 'dpdk-to-kernel-test-payload'
Count: 10
EAL: Detected CPU lcores: 2
EAL: Detected NUMA nodes: 1
EAL: Detected shared linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: VFIO support initialized
EAL: Using IOMMU type 8 (No-IOMMU)
EAL: Probe PCI driver: net_ena (1d0f:ec20) device: 0000:00:06.0 (socket -1)
TELEMETRY: No legacy callbacks, legacy socket not created
Warning: Some RX offloads not supported by device (flags: 0x1)
Warning: Some TX offloads not supported by device (flags: 0x1)
✅ DPDK UDP socket bound to 10.0.1.74:32768 (MAC: 02:1b:d0:42:96:8b)
Backend: dpdk
Sending packets...
Sent 30 bytes: 'dpdk-to-kernel-test-payload #1'
Received 30 bytes from 10.0.1.153:9000: 'dpdk-to-kernel-test-payload #1'
Sent 30 bytes: 'dpdk-to-kernel-test-payload #2'
Received 30 bytes from 10.0.1.153:9000: 'dpdk-to-kernel-test-payload #2'
Sent 30 bytes: 'dpdk-to-kernel-test-payload #3'
Received 30 bytes from 10.0.1.153:9000: 'dpdk-to-kernel-test-payload #3'
Sent 30 bytes: 'dpdk-to-kernel-test-payload #4'
Received 30 bytes from 10.0.1.153:9000: 'dpdk-to-kernel-test-payload #4'
Sent 30 bytes: 'dpdk-to-kernel-test-payload #5'
Received 30 bytes from 10.0.1.153:9000: 'dpdk-to-kernel-test-payload #5'
Sent 30 bytes: 'dpdk-to-kernel-test-payload #6'
Received 30 bytes from 10.0.1.153:9000: 'dpdk-to-kernel-test-payload #6'
Sent 30 bytes: 'dpdk-to-kernel-test-payload #7'
Received 30 bytes from 10.0.1.153:9000: 'dpdk-to-kernel-test-payload #7'
Sent 30 bytes: 'dpdk-to-kernel-test-payload #8'
Received 30 bytes from 10.0.1.153:9000: 'dpdk-to-kernel-test-payload #8'
Sent 30 bytes: 'dpdk-to-kernel-test-payload #9'
Received 30 bytes from 10.0.1.153:9000: 'dpdk-to-kernel-test-payload #9'
Sent 31 bytes: 'dpdk-to-kernel-test-payload #10'
Received 31 bytes from 10.0.1.153:9000: 'dpdk-to-kernel-test-payload #10'
Test complete
[2026-05-20T13:21:15Z] INFO: our-app-sends: sent 10 packets, received 10 responses
[2026-05-20T13:21:15Z] INFO: our-app-sends: PASS (sent >= 5 packets)
[2026-05-20T13:21:15Z] INFO: JUnit XML written to: /tmp/test-results/tier3-our-app-sends.xml
[2026-05-20T13:21:15Z] INFO: our-app-sends test complete

⚠️ SSM Command Failures (receiver-ssm-failure.log)

=== Polling timeout after 30s ===
Status: InProgress
Instance: i-06895a6bbea43f3c7 (receiver)
Command ID: 4f06c077-3e73-4db1-a734-fe7df593ca71

=== STDOUT ===


=== STDERR ===


=== Polling timeout after 30s ===
Status: InProgress
Instance: i-06895a6bbea43f3c7 (receiver)
Command ID: 03f33552-d05c-4622-a7af-1ab9ee936717

=== STDOUT ===


=== STDERR ===


=== Polling timeout after 30s ===
Status: InProgress
Instance: i-06895a6bbea43f3c7 (receiver)
Command ID: 2e7d365f-626a-4586-8b72-bf12ac755499

=== STDOUT ===


=== STDERR ===


=== Polling timeout after 30s ===
Status: InProgress
Instance: i-06895a6bbea43f3c7 (receiver)
Command ID: 5c59e4e6-66cb-4d16-8385-c8ea4dd8d880

=== STDOUT ===


=== STDERR ===

⚠️ SSM Command Failures (sender-ssm-failure.log)

=== Polling timeout after 30s ===
Status: InProgress
Instance: i-0cb78a419cd2e1fc9 (sender)
Command ID: 313f18cc-eb1d-4943-a3ec-eeff202751ca

=== STDOUT ===


=== STDERR ===

Network & PCI State

receiver-network-interfaces.log

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host noprefixroute 
       valid_lft forever preferred_lft forever
2: ens5: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9001 qdisc mq state UP group default qlen 1000
    link/ether 02:50:92:40:d3:23 brd ff:ff:ff:ff:ff:ff
    altname enp0s5
    altname eni-032bb9de9b8f2dbb5
    altname device-number-0.0
    inet 10.0.1.75/24 metric 512 brd 10.0.1.255 scope global dynamic ens5
       valid_lft 2483sec preferred_lft 2483sec
    inet6 fe80::50:92ff:fe40:d323/64 scope link proto kernel_ll 
       valid_lft forever preferred_lft forever

sender-network-interfaces.log

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host noprefixroute 
       valid_lft forever preferred_lft forever
2: ens5: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9001 qdisc mq state UP group default qlen 1000
    link/ether 02:46:a8:8f:2b:c5 brd ff:ff:ff:ff:ff:ff
    altname enp0s5
    altname eni-0b3ee0d4411e4b06c
    altname device-number-0.0
    inet 10.0.1.54/24 metric 512 brd 10.0.1.255 scope global dynamic ens5
       valid_lft 2507sec preferred_lft 2507sec
    inet6 fe80::46:a8ff:fe8f:2bc5/64 scope link proto kernel_ll 
       valid_lft forever preferred_lft forever

receiver-networking-diag-baseline.txt

=== NETWORKING DIAGNOSTICS ===
timestamp: 2026-05-20T13:12:21Z
hostname: ip-10-0-1-75.ec2.internal
kernel: 6.18.25-57.109.amzn2023.x86_64

=== DPDK PORT STATUS ===

Network devices using DPDK-compatible driver
============================================
0000:00:06.0 'Elastic Network Adapter (ENA) ec20' drv=vfio-pci unused=ena

Network devices using kernel driver
===================================
0000:00:05.0 'Elastic Network Adapter (ENA) ec20' if=ens5 drv=ena unused=vfio-pci *Active*

No 'Baseband' devices detected
==============================

No 'Crypto' devices detected
============================

No 'DMA' devices detected
=========================

No 'Eventdev' devices detected
==============================

No 'Mempool' devices detected
=============================

No 'Compress' devices detected
==============================

No 'Misc (rawdev)' devices detected
===================================

No 'Regex' devices detected
===========================

=== IP ADDRESSES ===
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host noprefixroute 
       valid_lft forever preferred_lft forever
2: ens5: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9001 qdisc mq state UP group default qlen 1000
    link/ether 02:50:92:40:d3:23 brd ff:ff:ff:ff:ff:ff
    altname enp0s5
    altname eni-032bb9de9b8f2dbb5
    altname device-number-0.0
    inet 10.0.1.75/24 metric 512 brd 10.0.1.255 scope global dynamic ens5
       valid_lft 3381sec preferred_lft 3381sec
    inet6 fe80::50:92ff:fe40:d323/64 scope link proto kernel_ll 
       valid_lft forever preferred_lft forever

=== ARP TABLE ===
10.0.1.15 dev ens5 lladdr 02:f0:ba:af:ba:8d REACHABLE 
10.0.1.186 dev ens5 lladdr 02:2c:46:43:35:4f STALE 
10.0.1.1 dev ens5 lladdr 02:82:fd:37:5b:1d REACHABLE 
10.0.1.207 dev ens5 lladdr 02:c1:39:54:01:51 REACHABLE 

=== ROUTE TABLE ===
default via 10.0.1.1 dev ens5 proto dhcp src 10.0.1.75 metric 512 
10.0.0.2 via 10.0.1.1 dev ens5 proto dhcp src 10.0.1.75 metric 512 
10.0.1.0/24 dev ens5 proto kernel scope link src 10.0.1.75 metric 512 
10.0.1.1 dev ens5 proto dhcp scope link src 10.0.1.75 metric 512 

=== IMDS: ENI INFORMATION ===
ENI MACs found: 02:40:2f:e1:99:87/ 02:50:92:40:d3:23/ 

--- ENI: 02:40:2f:e1:99:87/ ---
  device-number: 1
  local-ipv4s: 10.0.1.153
  subnet-id: subnet-088fbea06e7afc393
  subnet-cidr: 10.0.1.0/24

--- ENI: 02:50:92:40:d3:23/ ---
  device-number: 0
  local-ipv4s: 10.0.1.75
  subnet-id: subnet-088fbea06e7afc393
  subnet-cidr: 10.0.1.0/24


=== GATEWAY ARP TEST ===
Gateway IP: 10.0.1.1
Gateway ARP entry:
10.0.1.1 dev ens5 lladdr 02:82:fd:37:5b:1d REACHABLE 

arping result:
ARPING 10.0.1.1 from 10.0.1.75 ens5
Unicast reply from 10.0.1.1 [02:82:FD:37:5B:1D]  0.536ms
Sent 1 probes (1 broadcast(s))
Received 1 response(s)

=== HUGEPAGE STATUS ===
AnonHugePages:         0 kB
ShmemHugePages:        0 kB
FileHugePages:     18432 kB
HugePages_Total:    1024
HugePages_Free:     1024
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
Hugetlb:         2097152 kB

=== VFIO STATUS ===
total 0
drwxr-xr-x.  2 root root       80 May 20 13:12 .
drwxr-xr-x. 14 root root     3100 May 20 13:11 ..
crw-------.  1 root root 243,   0 May 20 13:12 noiommu-0
crw-rw-rw-.  1 root root  10, 196 May 20 13:08 vfio

noiommu mode:
Y

=== DPDK SHARED MEMORY ===
no /var/run/dpdk/ directory (clean state)

=== DPDK-RELATED DMESG (last 30 lines) ===
[    0.053756] printk: legacy console [ttyS0] enabled
[    0.054898] x2apic enabled
[    0.059581] mitigations: Enabled attack vectors: user_kernel, user_user, guest_host, guest_guest, SMT mitigations: auto
[    0.059695] x86/fpu: Enabled xstate features 0x2ff, context size is 2568 bytes, using 'compacted' format.
[    0.069287] audit: type=2000 audit(1779282517.592:1): state=initialized audit_enabled=0 res=1
[    0.079851] kprobes: kprobe jump-optimization is enabled. All kprobes are optimized if possible.
[    0.131050] ACPI: Interpreter enabled
[    0.131050] ACPI: Enabled 2 GPEs in block 00 to 0F
[    0.145429] pci 0000:00:05.0: enabling Extended Tags
[    0.214336] SGI XFS with ACLs, security attributes, quota, no debug enabled
[    0.229709] ACPI: \_SB_.LNKD: Enabled at IRQ 11
[    0.233081] IPI shorthand broadcast: enabled
[    2.696891] systemd[1]: Mounting dev-hugepages.mount - Huge Pages File System...
[    2.742857] systemd[1]: Mounted dev-hugepages.mount - Huge Pages File System.
[    2.785233] VFIO - User Level meta-driver version: 0.3
[    3.220864] ena 0000:00:05.0: Elastic Network Adapter (ENA) v2.16.1g
[    3.232103] ena 0000:00:05.0: ENA device version: 0.10
[    3.232879] ena 0000:00:05.0: ENA controller version: 0.0.1 implementation version 1
[    3.335058] ena 0000:00:05.0: ENA Large LLQ is disabled
[    3.347256] ena 0000:00:05.0: Elastic Network Adapter (ENA) found at mem c0500000, mac addr 02:50:92:40:d3:23
[    3.387451] ena 0000:00:05.0 ens5: renamed from eth0
[  169.841640] pci 0000:00:06.0: enabling Extended Tags
[  169.845856] ena 0000:00:06.0: enabling device (0000 -> 0002)
[  169.858755] ena 0000:00:06.0: ENA device version: 0.10
[  169.859538] ena 0000:00:06.0: ENA controller version: 0.0.1 implementation version 1
[  169.960744] ena 0000:00:06.0: ENA Large LLQ is disabled
[  169.973743] ena 0000:00:06.0: Elastic Network Adapter (ENA) found at mem c0508000, mac addr 02:40:2f:e1:99:87
[  169.981139] ena 0000:00:06.0 ens6: renamed from eth0
[  210.017128] vfio-pci 0000:00:06.0: Adding to iommu group 0
[  210.018609] vfio-pci 0000:00:06.0: Adding kernel taint for vfio-noiommu group on device

=== DPDK-RELATED PROCESSES ===
no DPDK processes running

=== END DIAGNOSTICS ===

sender-networking-diag-baseline.txt

=== NETWORKING DIAGNOSTICS ===
timestamp: 2026-05-20T13:12:13Z
hostname: ip-10-0-1-54.ec2.internal
kernel: 6.18.25-57.109.amzn2023.x86_64

=== DPDK PORT STATUS ===

Network devices using DPDK-compatible driver
============================================
0000:00:06.0 'Elastic Network Adapter (ENA) ec20' drv=vfio-pci unused=ena

Network devices using kernel driver
===================================
0000:00:05.0 'Elastic Network Adapter (ENA) ec20' if=ens5 drv=ena unused=vfio-pci *Active*

No 'Baseband' devices detected
==============================

No 'Crypto' devices detected
============================

No 'DMA' devices detected
=========================

No 'Eventdev' devices detected
==============================

No 'Mempool' devices detected
=============================

No 'Compress' devices detected
==============================

No 'Misc (rawdev)' devices detected
===================================

No 'Regex' devices detected
===========================

=== IP ADDRESSES ===
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host noprefixroute 
       valid_lft forever preferred_lft forever
2: ens5: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9001 qdisc mq state UP group default qlen 1000
    link/ether 02:46:a8:8f:2b:c5 brd ff:ff:ff:ff:ff:ff
    altname enp0s5
    altname eni-0b3ee0d4411e4b06c
    altname device-number-0.0
    inet 10.0.1.54/24 metric 512 brd 10.0.1.255 scope global dynamic ens5
       valid_lft 3389sec preferred_lft 3389sec
    inet6 fe80::46:a8ff:fe8f:2bc5/64 scope link proto kernel_ll 
       valid_lft forever preferred_lft forever

=== ARP TABLE ===
10.0.1.15 dev ens5 lladdr 02:f0:ba:af:ba:8d REACHABLE 
10.0.1.207 dev ens5 lladdr 02:c1:39:54:01:51 STALE 
10.0.1.1 dev ens5 lladdr 02:82:fd:37:5b:1d REACHABLE 
10.0.1.186 dev ens5 lladdr 02:2c:46:43:35:4f STALE 

=== ROUTE TABLE ===
default via 10.0.1.1 dev ens5 proto dhcp src 10.0.1.54 metric 512 
10.0.0.2 via 10.0.1.1 dev ens5 proto dhcp src 10.0.1.54 metric 512 
10.0.1.0/24 dev ens5 proto kernel scope link src 10.0.1.54 metric 512 
10.0.1.1 dev ens5 proto dhcp scope link src 10.0.1.54 metric 512 

=== IMDS: ENI INFORMATION ===
ENI MACs found: 02:1b:d0:42:96:8b/ 02:46:a8:8f:2b:c5/ 

--- ENI: 02:1b:d0:42:96:8b/ ---
  device-number: 1
  local-ipv4s: 10.0.1.74
  subnet-id: subnet-088fbea06e7afc393
  subnet-cidr: 10.0.1.0/24

--- ENI: 02:46:a8:8f:2b:c5/ ---
  device-number: 0
  local-ipv4s: 10.0.1.54
  subnet-id: subnet-088fbea06e7afc393
  subnet-cidr: 10.0.1.0/24


=== GATEWAY ARP TEST ===
Gateway IP: 10.0.1.1
Gateway ARP entry:
10.0.1.1 dev ens5 lladdr 02:82:fd:37:5b:1d REACHABLE 

arping result:
ARPING 10.0.1.1 from 10.0.1.54 ens5
Unicast reply from 10.0.1.1 [02:82:FD:37:5B:1D]  0.532ms
Sent 1 probes (1 broadcast(s))
Received 1 response(s)

=== HUGEPAGE STATUS ===
AnonHugePages:         0 kB
ShmemHugePages:        0 kB
FileHugePages:     18432 kB
HugePages_Total:    1024
HugePages_Free:     1024
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
Hugetlb:         2097152 kB

=== VFIO STATUS ===
total 0
drwxr-xr-x.  2 root root       80 May 20 13:12 .
drwxr-xr-x. 14 root root     3100 May 20 13:11 ..
crw-------.  1 root root 243,   0 May 20 13:12 noiommu-0
crw-rw-rw-.  1 root root  10, 196 May 20 13:08 vfio

noiommu mode:
Y

=== DPDK SHARED MEMORY ===
no /var/run/dpdk/ directory (clean state)

=== DPDK-RELATED DMESG (last 30 lines) ===
[    0.051733] printk: legacy console [ttyS0] enabled
[    0.052831] x2apic enabled
[    0.057664] mitigations: Enabled attack vectors: user_kernel, user_user, guest_host, guest_guest, SMT mitigations: auto
[    0.057782] x86/fpu: Enabled xstate features 0x2ff, context size is 2568 bytes, using 'compacted' format.
[    0.067185] audit: type=2000 audit(1779282517.576:1): state=initialized audit_enabled=0 res=1
[    0.077496] kprobes: kprobe jump-optimization is enabled. All kprobes are optimized if possible.
[    0.128232] ACPI: Interpreter enabled
[    0.128232] ACPI: Enabled 2 GPEs in block 00 to 0F
[    0.142683] pci 0000:00:05.0: enabling Extended Tags
[    0.215545] SGI XFS with ACLs, security attributes, quota, no debug enabled
[    0.227369] ACPI: \_SB_.LNKD: Enabled at IRQ 11
[    0.235439] IPI shorthand broadcast: enabled
[    3.075882] systemd[1]: Mounting dev-hugepages.mount - Huge Pages File System...
[    3.112419] systemd[1]: Mounted dev-hugepages.mount - Huge Pages File System.
[    3.180844] VFIO - User Level meta-driver version: 0.3
[    3.709360] ena 0000:00:05.0: Elastic Network Adapter (ENA) v2.16.1g
[    3.721219] ena 0000:00:05.0: ENA device version: 0.10
[    3.721982] ena 0000:00:05.0: ENA controller version: 0.0.1 implementation version 1
[    3.825010] ena 0000:00:05.0: ENA Large LLQ is disabled
[    3.837140] ena 0000:00:05.0: Elastic Network Adapter (ENA) found at mem c0500000, mac addr 02:46:a8:8f:2b:c5
[    3.873868] ena 0000:00:05.0 ens5: renamed from eth0
[  170.252916] pci 0000:00:06.0: enabling Extended Tags
[  170.257113] ena 0000:00:06.0: enabling device (0000 -> 0002)
[  170.269948] ena 0000:00:06.0: ENA device version: 0.10
[  170.270696] ena 0000:00:06.0: ENA controller version: 0.0.1 implementation version 1
[  170.371852] ena 0000:00:06.0: ENA Large LLQ is disabled
[  170.384784] ena 0000:00:06.0: Elastic Network Adapter (ENA) found at mem c0508000, mac addr 02:1b:d0:42:96:8b
[  170.392216] ena 0000:00:06.0 ens6: renamed from eth0
[  202.949179] vfio-pci 0000:00:06.0: Adding to iommu group 0
[  202.950616] vfio-pci 0000:00:06.0: Adding kernel taint for vfio-noiommu group on device

=== DPDK-RELATED PROCESSES ===
no DPDK processes running

=== END DIAGNOSTICS ===

⚠️ Crash Diagnostics

receiver-dmesg-crashes.log

[    0.068638] pid_max: default: 32768 minimum: 301
[    0.149412] iommu: Default domain type: Translated
[    0.149438] NetLabel:  unlabeled traffic allowed by default
[    0.188481] PCI: CLS 0 bytes, default 64
[    0.245961] nvme nvme0: 2/0/0 default/read/poll queues
[    0.425124] systemd[1]: systemd 252.23-11.amzn2023 running in system mode (+PAM +AUDIT +SELINUX -APPARMOR +IMA +SMACK +SECCOMP -GCRYPT -GNUTLS +OPENSSL +ACL +BLKID +CURL +ELFUTILS +FIDO2 +IDN2 -IDN -IPTC +KMOD +LIBCRYPTSETUP +LIBFDISK +PCRE2 +PWQUALITY +P11KIT +QRENCODE +TPM2 -BZIP2 -LZ4 +XZ +ZLIB -ZSTD +BPF_FRAMEWORK +XKBCOMMON +UTMP +SYSVINIT default-hierarchy=unified)
[    0.425216] systemd[1]: No hostname configured, using default hostname.
[    0.479368] systemd[1]: Queued start job for default target initrd.target.
[    1.969611] systemd[1]: systemd 252.23-11.amzn2023 running in system mode (+PAM +AUDIT +SELINUX -APPARMOR +IMA +SMACK +SECCOMP -GCRYPT -GNUTLS +OPENSSL +ACL +BLKID +CURL +ELFUTILS +FIDO2 +IDN2 -IDN -IPTC +KMOD +LIBCRYPTSETUP +LIBFDISK +PCRE2 +PWQUALITY +P11KIT +QRENCODE +TPM2 -BZIP2 -LZ4 +XZ +ZLIB -ZSTD +BPF_FRAMEWORK +XKBCOMMON +UTMP +SYSVINIT default-hierarchy=unified)
[  248.185845] vfio-pci 0000:00:06.0: vfio-noiommu device opened by user (echo:4319)
[  473.483341] vfio-pci 0000:00:06.0: vfio-noiommu device opened by user (echo:4755)
[  978.497853] vfio-pci 0000:00:06.0: vfio-noiommu device opened by user (echo:5840)

sender-dmesg-crashes.log

[    0.066574] pid_max: default: 32768 minimum: 301
[    0.146621] iommu: Default domain type: Translated
[    0.147282] NetLabel:  unlabeled traffic allowed by default
[    0.195815] PCI: CLS 0 bytes, default 64
[    0.249948] nvme nvme0: 2/0/0 default/read/poll queues
[    0.410551] systemd[1]: systemd 252.23-11.amzn2023 running in system mode (+PAM +AUDIT +SELINUX -APPARMOR +IMA +SMACK +SECCOMP -GCRYPT -GNUTLS +OPENSSL +ACL +BLKID +CURL +ELFUTILS +FIDO2 +IDN2 -IDN -IPTC +KMOD +LIBCRYPTSETUP +LIBFDISK +PCRE2 +PWQUALITY +P11KIT +QRENCODE +TPM2 -BZIP2 -LZ4 +XZ +ZLIB -ZSTD +BPF_FRAMEWORK +XKBCOMMON +UTMP +SYSVINIT default-hierarchy=unified)
[    0.410672] systemd[1]: No hostname configured, using default hostname.
[    0.466704] systemd[1]: Queued start job for default target initrd.target.
[    2.226309] systemd[1]: systemd 252.23-11.amzn2023 running in system mode (+PAM +AUDIT +SELINUX -APPARMOR +IMA +SMACK +SECCOMP -GCRYPT -GNUTLS +OPENSSL +ACL +BLKID +CURL +ELFUTILS +FIDO2 +IDN2 -IDN -IPTC +KMOD +LIBCRYPTSETUP +LIBFDISK +PCRE2 +PWQUALITY +P11KIT +QRENCODE +TPM2 -BZIP2 -LZ4 +XZ +ZLIB -ZSTD +BPF_FRAMEWORK +XKBCOMMON +UTMP +SYSVINIT default-hierarchy=unified)
[  801.401000] vfio-pci 0000:00:06.0: vfio-noiommu device opened by user (echo:5584)

Kernel Console (dmesg)

receiver-console-output.log (PCI/driver events only)

[  248.184210] vfio-pci 0000:00:06.0: reset done
[  248.185845] vfio-pci 0000:00:06.0: vfio-noiommu device opened by user (echo:4319)
[  248.187344] vfio-pci 0000:00:06.0: resetting
[  248.404077] vfio-pci 0000:00:06.0: reset done
[  330.592509] vfio-pci 0000:00:06.0: Removing from iommu group 0
[  331.601540] ena 0000:00:06.0: ENA device version: 0.10
[  331.602314] ena 0000:00:06.0: ENA controller version: 0.0.1 implementation version 1
[  331.701521] ena 0000:00:06.0: ENA Large LLQ is disabled
[  331.713655] ena 0000:00:06.0: Elastic Network Adapter (ENA) found at mem c0508000, mac addr 02:40:2f:e1:99:87
[  331.724115] ena 0000:00:06.0 ens6: renamed from eth0 (while UP)
[  351.605041] vfio-pci 0000:00:06.0: Adding to iommu group 0
[  351.606533] vfio-pci 0000:00:06.0: Adding kernel taint for vfio-noiommu group on device
[  473.257360] vfio-pci 0000:00:06.0: resetting
[  473.481704] vfio-pci 0000:00:06.0: reset done
[  473.483341] vfio-pci 0000:00:06.0: vfio-noiommu device opened by user (echo:4755)
[  473.484819] vfio-pci 0000:00:06.0: resetting
[  473.701570] vfio-pci 0000:00:06.0: reset done
[  549.976763] vfio-pci 0000:00:06.0: Removing from iommu group 0
[  550.989141] ena 0000:00:06.0: ENA device version: 0.10
[  550.989916] ena 0000:00:06.0: ENA controller version: 0.0.1 implementation version 1
[  551.089122] ena 0000:00:06.0: ENA Large LLQ is disabled
[  551.101368] ena 0000:00:06.0: Elastic Network Adapter (ENA) found at mem c0508000, mac addr 02:40:2f:e1:99:87
[  551.109408] ena 0000:00:06.0 ens6: renamed from eth0
[  902.691259] vfio-pci 0000:00:06.0: Adding to iommu group 0
[  902.692749] vfio-pci 0000:00:06.0: Adding kernel taint for vfio-noiommu group on device
[  978.280638] vfio-pci 0000:00:06.0: resetting
[  978.496203] vfio-pci 0000:00:06.0: reset done
[  978.497853] vfio-pci 0000:00:06.0: vfio-noiommu device opened by user (echo:5840)
[  978.499346] vfio-pci 0000:00:06.0: resetting
[  978.716019] vfio-pci 0000:00:06.0: reset done

sender-console-output.log (PCI/driver events only)

[  801.402459] vfio-pci 0000:00:06.0: resetting
[  801.629248] vfio-pci 0000:00:06.0: reset done
[  864.693839] vfio-pci 0000:00:06.0: Removing from iommu group 0
[  865.706672] ena 0000:00:06.0: ENA device version: 0.10
[  865.707436] ena 0000:00:06.0: ENA controller version: 0.0.1 implementation version 1
[  865.807095] ena 0000:00:06.0: ENA Large LLQ is disabled
[  865.819131] ena 0000:00:06.0: Elastic Network Adapter (ENA) found at mem c0508000, mac addr 02:1b:d0:42:96:8b
[  865.827241] ena 0000:00:06.0 ens6: renamed from eth0
[  895.640225] vfio-pci 0000:00:06.0: Adding to iommu group 0
[  895.641674] vfio-pci 0000:00:06.0: Adding kernel taint for vfio-noiommu group on device
[  994.396490] vfio-pci 0000:00:06.0: resetting
[  994.627589] vfio-pci 0000:00:06.0: reset done
[  994.629184] vfio-pci 0000:00:06.0: vfio-noiommu device opened by user (tokio-rt-worker:6028)
[  994.630788] vfio-pci 0000:00:06.0: resetting
[  994.847335] vfio-pci 0000:00:06.0: reset done
[  995.144799] vfio-pci 0000:00:06.0: resetting
[  995.367490] vfio-pci 0000:00:06.0: reset done
[  995.369081] vfio-pci 0000:00:06.0: vfio-noiommu device opened by user (tokio-rt-worker:6048)
[  995.370709] vfio-pci 0000:00:06.0: resetting
[  995.587355] vfio-pci 0000:00:06.0: reset done
[  996.867179] vfio-pci 0000:00:06.0: resetting
[  997.097552] vfio-pci 0000:00:06.0: reset done
[  997.099136] vfio-pci 0000:00:06.0: vfio-noiommu device opened by user (tokio-rt-worker:6071)
[  997.100749] vfio-pci 0000:00:06.0: resetting
[  997.317432] vfio-pci 0000:00:06.0: reset done
[  998.606971] vfio-pci 0000:00:06.0: resetting
[  998.837495] vfio-pci 0000:00:06.0: reset done
[  998.839087] vfio-pci 0000:00:06.0: vfio-noiommu device opened by user (tokio-rt-worker:6095)
[  998.840713] vfio-pci 0000:00:06.0: resetting
[  999.057379] vfio-pci 0000:00:06.0: reset done

github-actions · 2026-05-20T13:30:48Z

[Perf] Benchmark Diag: `tokio-dpdk` result

SSM exit: 0

Output (last 30 lines)

Duration per step: 30s
Source MAC: 02:9f:17:e9:1c:27

--- Packet size: 64B ---
  Target: 70,000 pps ... TX: 70,000 pps, RX: 69,000 pps, Drop: 1.4286%, Lat avg: 0.0 us
  Target: 140,000 pps ... TX: 140,000 pps, RX: 139,000 pps, Drop: 0.7143%, Lat avg: 0.0 us
  Target: 350,000 pps ... TX: 350,000 pps, RX: 306,839 pps, Drop: 12.3318%, Lat avg: 0.0 us
  Target: 700,000 pps ... TX: 700,000 pps, RX: 307,556 pps, Drop: 56.0634%, Lat avg: 0.0 us

--- Packet size: 512B ---
  Target: 70,000 pps ... TX: 70,000 pps, RX: 69,000 pps, Drop: 1.4285%, Lat avg: 0.0 us
  Target: 140,000 pps ... TX: 140,000 pps, RX: 139,000 pps, Drop: 0.7143%, Lat avg: 0.0 us
  Target: 350,000 pps ... TX: 350,000 pps, RX: 226,904 pps, Drop: 35.1702%, Lat avg: 0.0 us
  Target: 700,000 pps ... TX: 700,000 pps, RX: 226,559 pps, Drop: 67.6344%, Lat avg: 0.0 us

--- Packet size: 1400B ---
  Target: 70,000 pps ... TX: 70,000 pps, RX: 69,000 pps, Drop: 1.4286%, Lat avg: 0.0 us
  Target: 140,000 pps ... TX: 140,000 pps, RX: 139,000 pps, Drop: 0.7143%, Lat avg: 0.0 us
  Target: 350,000 pps ... TX: 350,000 pps, RX: 147,114 pps, Drop: 57.9673%, Lat avg: 0.0 us
  Target: 700,000 pps ... TX: 476,681 pps, RX: 156,216 pps, Drop: 67.2284%, Lat avg: 0.0 us

--- Packet size: 8500B ---
  (jumbo: capping at 418,133 pps for 30.0 Gbps limit)
  Target: 70,000 pps ... TX: 70,000 pps, RX: 54,702 pps, Drop: 21.8546%, Lat avg: 0.0 us
  Target: 140,000 pps ... TX: 78,341 pps, RX: 57,890 pps, Drop: 26.1047%, Lat avg: 0.0 us
  Target: 350,000 pps ... TX: 78,290 pps, RX: 57,722 pps, Drop: 26.2716%, Lat avg: 0.0 us
  Target: 700,000 pps ... SKIPPED (exceeds 30.0 Gbps cap)

Results written to /tmp/perf-results/tokio-dpdk.json
EXIT_CODE=0

github-actions · 2026-05-20T13:31:37Z

[Perf] Stage: Benchmark (4/4)

Running native-dpdk benchmark...
Packet sizes: 64,512,1400,8500 | Duration: 30s/step | Target PPS: 70000,140000,350000,700000

github-actions · 2026-05-20T13:32:44Z

[Perf] Benchmark Diag: `native-dpdk` preflight

TRex API OK: 2 ports
  Port 0: 02:9f:17:e9:1c:27
  Port 1: 02:10:54:77:15:03
PREFLIGHT_OK

github-actions · 2026-05-20T13:41:24Z

[Perf] Benchmark Diag: `native-dpdk` result

SSM exit: 0

Output (last 30 lines)

Duration per step: 30s
Source MAC: 02:9f:17:e9:1c:27

--- Packet size: 64B ---
  Target: 70,000 pps ... TX: 70,000 pps, RX: 70,000 pps, Drop: 0.0%, Lat avg: 132.0 us
  Target: 140,000 pps ... TX: 140,000 pps, RX: 140,000 pps, Drop: 0.0%, Lat avg: 147.0 us
  Target: 350,000 pps ... TX: 350,000 pps, RX: 350,000 pps, Drop: 0.0%, Lat avg: 165.0 us
  Target: 700,000 pps ... TX: 700,000 pps, RX: 699,686 pps, Drop: 0.0448%, Lat avg: 219.0 us

--- Packet size: 512B ---
  Target: 70,000 pps ... TX: 70,000 pps, RX: 70,000 pps, Drop: 0.0%, Lat avg: 135.0 us
  Target: 140,000 pps ... TX: 140,000 pps, RX: 140,000 pps, Drop: 0.0%, Lat avg: 155.0 us
  Target: 350,000 pps ... TX: 350,000 pps, RX: 350,000 pps, Drop: 0.0%, Lat avg: 171.0 us
  Target: 700,000 pps ... TX: 700,000 pps, RX: 694,499 pps, Drop: 0.7859%, Lat avg: 670.0 us

--- Packet size: 1400B ---
  Target: 70,000 pps ... TX: 70,000 pps, RX: 70,000 pps, Drop: 0.0%, Lat avg: 134.0 us
  Target: 140,000 pps ... TX: 140,000 pps, RX: 140,000 pps, Drop: 0.0%, Lat avg: 161.0 us
  Target: 350,000 pps ... TX: 350,000 pps, RX: 350,000 pps, Drop: 0.0%, Lat avg: 173.0 us
  Target: 700,000 pps ... TX: 476,661 pps, RX: 457,658 pps, Drop: 3.9867%, Lat avg: 4507.0 us

--- Packet size: 8500B ---
  (jumbo: capping at 418,133 pps for 30.0 Gbps limit)
  Target: 70,000 pps ... TX: 70,000 pps, RX: 70,000 pps, Drop: 0.0%, Lat avg: 156.0 us
  Target: 140,000 pps ... TX: 78,336 pps, RX: 76,031 pps, Drop: 2.9425%, Lat avg: 14304.0 us
  Target: 350,000 pps ... TX: 78,301 pps, RX: 77,976 pps, Drop: 0.4153%, Lat avg: 14667.0 us
  Target: 700,000 pps ... SKIPPED (exceeds 30.0 Gbps cap)

Results written to /tmp/perf-results/native-dpdk.json
EXIT_CODE=0

github-actions · 2026-05-20T13:42:10Z

[Perf] Diag: testpmd log

testpmd output (last 30 lines)

=== testpmd stats (last 30 lines) ===
  ############################################################################
Telling cores to stop...
Waiting for lcores to finish...

  ---------------------- Forward statistics for port 0  ----------------------
  RX-packets: 113328185      RX-dropped: 0             RX-total: 113328185
  RX-error: 403354
  RX-nombufs: 0             
  TX-packets: 112825149      TX-dropped: 503036        TX-total: 113328185
  ----------------------------------------------------------------------------

  +++++++++++++++ Accumulated forward statistics for all ports+++++++++++++++
  RX-packets: 113328185      RX-dropped: 0             RX-total: 113328185
  TX-packets: 112825149      TX-dropped: 503036        TX-total: 113328185
  ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Done.

Stopping port 0...
Stopping ports...
Done

Shutting down port 0...
ena_rx_queue_release(): Rx queue 0:0 released
ena_tx_queue_release(): Tx queue 0:0 released
Closing ports...
Port 0 is closed
Done

Bye...
=== ENA port stats ===
N/A (vfio-pci)

github-actions · 2026-05-20T13:42:48Z

[Perf] Stage: Results

[13:42:46] INFO Generating markdown summary...

Performance Test Results — unknown

Commit: 1dd5643b
Timestamp: 2026-05-20T13:42:46.960134+00:00

64B packets

Config	Target PPS	TX pps	RX pps	Drop %	NIC imissed	NIC ierrors	NIC nombuf	App Drops	Lat Avg (us)	Lat Max (us)	TX Mbps	RX Mbps
native-dpdk	70,000	70,000	70,000	0.00%	—	—	—	—	132.0	184.0	35.8	35.8
native-dpdk	140,000	140,000	140,000	0.00%	—	—	—	—	147.0	339.0	71.7	71.7
native-dpdk	350,000	350,000	350,000	0.00%	—	—	—	—	165.0	370.0	179.2	179.2
native-dpdk	700,000	700,000	699,686	0.04%	—	—	—	—	219.0	1810.0	358.4	358.2
rust-dpdk	70,000	70,000	69,000	1.43%	0	30,515	0	0	0.0	0.0	35.8	35.3
rust-dpdk	140,000	140,000	139,000	0.71%	0	41,899	0	0	200.0	0.0	71.7	71.2
rust-dpdk	350,000	350,000	348,997	0.29%	0	32,414	0	0	0.0	0.0	179.2	178.7
rust-dpdk	700,000	700,000	697,788	0.32%	0	41,855	0	0	381.0	0.0	358.4	357.3
tokio-dpdk	70,000	70,000	69,000	1.43%	0	30,935	0	0	0.0	0.0	35.8	38.6
tokio-dpdk	140,000	140,000	139,000	0.71%	0	38,732	0	0	0.0	0.0	71.7	77.8
tokio-dpdk	350,000	350,000	306,839	12.33%	0	18,096	0	0	0.0	0.0	179.2	171.8
tokio-dpdk	700,000	700,000	307,556	56.06%	0	22,833	0	0	0.0	0.0	358.4	172.2
plain-rust	70,000	70,000	69,000	1.43%	—	—	—	—	0.0	0.0	35.8	35.3
plain-rust	140,000	140,000	139,000	0.71%	—	—	—	—	0.0	0.0	71.7	71.2
plain-rust	350,000	350,000	348,979	0.29%	—	—	—	—	0.0	0.0	179.2	178.7
plain-rust	700,000	700,000	382,398	45.37%	—	—	—	—	0.0	0.0	358.4	195.8

512B packets

Config	Target PPS	TX pps	RX pps	Drop %	NIC imissed	NIC ierrors	NIC nombuf	App Drops	Lat Avg (us)	Lat Max (us)	TX Mbps	RX Mbps
native-dpdk	70,000	70,000	70,000	0.00%	—	—	—	—	135.0	356.0	286.7	286.7
native-dpdk	140,000	140,000	140,000	0.00%	—	—	—	—	155.0	385.0	573.4	573.4
native-dpdk	350,000	350,000	350,000	0.00%	—	—	—	—	171.0	821.0	1433.6	1433.6
native-dpdk	700,000	700,000	694,499	0.79%	—	—	—	—	670.0	2467.0	2867.2	2844.7
rust-dpdk	70,000	70,000	69,000	1.43%	0	34,323	0	0	0.0	0.0	286.7	282.6
rust-dpdk	140,000	140,000	139,000	0.71%	0	31,881	0	0	0.0	0.0	573.4	569.3
rust-dpdk	350,000	350,000	349,000	0.29%	0	41,870	0	0	0.0	0.0	1433.6	1429.5
rust-dpdk	700,000	700,000	696,778	0.46%	0	32,069	0	0	397.0	0.0	2867.2	2854.0
tokio-dpdk	70,000	70,000	69,000	1.43%	0	34,755	0	0	0.0	0.0	286.7	285.9
tokio-dpdk	140,000	140,000	139,000	0.71%	0	31,489	0	0	0.0	0.0	573.4	576.0
tokio-dpdk	350,000	350,000	226,904	35.17%	0	18,055	0	0	0.0	0.0	1433.6	940.3
tokio-dpdk	700,000	700,000	226,559	67.63%	0	11,527	0	0	0.0	0.0	2867.2	938.9
plain-rust	70,000	70,000	69,000	1.43%	—	—	—	—	0.0	0.0	286.7	282.6
plain-rust	140,000	140,000	139,000	0.71%	—	—	—	—	0.0	0.0	573.4	569.3
plain-rust	350,000	350,000	348,916	0.31%	—	—	—	—	0.0	0.0	1433.6	1429.2
plain-rust	700,000	700,000	431,308	38.38%	—	—	—	—	458.0	0.0	2867.2	1766.6

1400B packets

Config	Target PPS	TX pps	RX pps	Drop %	NIC imissed	NIC ierrors	NIC nombuf	App Drops	Lat Avg (us)	Lat Max (us)	TX Mbps	RX Mbps
native-dpdk	70,000	70,000	70,000	0.00%	—	—	—	—	134.0	258.0	784.0	784.0
native-dpdk	140,000	140,000	140,000	0.00%	—	—	—	—	161.0	224.0	1568.0	1568.0
native-dpdk	350,000	350,000	350,000	0.00%	—	—	—	—	173.0	521.0	3920.0	3920.0
native-dpdk	700,000	476,661	457,658	3.99%	—	—	—	—	4507.0	6316.0	5338.6	5125.8
rust-dpdk	70,000	70,000	69,000	1.43%	0	41,920	0	0	300.0	0.0	784.0	772.8
rust-dpdk	140,000	140,000	139,000	0.71%	0	34,113	0	0	280.0	0.0	1568.0	1556.8
rust-dpdk	350,000	350,000	349,000	0.29%	0	31,906	0	0	0.0	0.0	3920.0	3908.8
rust-dpdk	700,000	476,322	475,607	0.15%	0	32,207	0	0	2628.0	0.0	5334.8	5326.8
tokio-dpdk	70,000	70,000	69,000	1.43%	0	39,568	0	0	0.0	0.0	784.0	776.1
tokio-dpdk	140,000	140,000	139,000	0.71%	0	31,054	0	0	0.0	0.0	1568.0	1563.5
tokio-dpdk	350,000	350,000	147,114	57.97%	0	8,500	0	0	0.0	0.0	3920.0	1654.7
tokio-dpdk	700,000	476,681	156,216	67.23%	0	8,680	0	0	0.0	0.0	5338.8	1757.1
plain-rust	70,000	70,000	69,000	1.43%	—	—	—	—	0.0	0.0	784.0	772.8
plain-rust	140,000	140,000	139,000	0.71%	—	—	—	—	0.0	0.0	1568.0	1556.8
plain-rust	350,000	350,000	348,651	0.39%	—	—	—	—	256.0	0.0	3920.0	3904.9
plain-rust	700,000	476,674	437,947	8.12%	—	—	—	—	0.0	0.0	5338.7	4905.0

8500B packets

Config	Target PPS	TX pps	RX pps	Drop %	NIC imissed	NIC ierrors	NIC nombuf	App Drops	Lat Avg (us)	Lat Max (us)	TX Mbps	RX Mbps
native-dpdk	70,000	70,000	70,000	0.00%	—	—	—	—	156.0	228.0	4760.0	4760.0
native-dpdk	140,000	78,336	76,031	2.94%	—	—	—	—	14304.0	15059.0	5326.9	5170.1
native-dpdk	350,000	78,301	77,976	0.42%	—	—	—	—	14667.0	15401.0	5324.5	5302.4
rust-dpdk	70,000	70,000	69,000	1.43%	0	32,155	0	0	0.0	0.0	4760.0	4692.0
rust-dpdk	140,000	78,289	76,140	2.75%	0	22,268	0	0	0.0	0.0	5323.7	5177.5
rust-dpdk	350,000	78,300	77,675	0.80%	0	6,681	0	0	0.0	0.0	5324.4	5281.9
tokio-dpdk	70,000	70,000	54,702	21.85%	0	3,769	0	0	0.0	0.0	4760.0	3722.3
tokio-dpdk	140,000	78,341	57,890	26.10%	0	13,816	0	0	0.0	0.0	5327.2	3939.3
tokio-dpdk	350,000	78,290	57,722	26.27%	0	4,864	0	0	0.0	0.0	5323.7	3927.8
plain-rust	70,000	70,000	36,107	48.42%	—	—	—	—	0.0	0.0	4760.0	2455.3
plain-rust	140,000	78,354	77,729	0.80%	—	—	—	—	0.0	0.0	5328.0	5285.5
plain-rust	350,000	78,284	77,893	0.50%	—	—	—	—	14320.0	0.0	5323.3	5296.7

NIC Drops Instrumentation Self-Check

Compares (NIC-FINAL − NIC-BASELINE) one-shot snapshots against the sum of per-tick [PERF] deltas over the reporter's lifetime. These MUST match exactly — a mismatch means per-tick delta bookkeeping is losing data.

Config	Status	imissed (expected / actual / Δ)	ierrors (expected / actual / Δ)	rx_nombuf (expected / actual / Δ)
native-dpdk	no instrumentation	—	—	—
rust-dpdk	OK	0 / 0 / 0	403,473 / 403,473 / 0	0 / 0 / 0
tokio-dpdk	OK	0 / 0 / 0	262,347 / 262,347 / 0	0 / 0 / 0
plain-rust	no instrumentation	—	—	—

expected = FINAL − BASELINE (raw NIC counter delta across reporter lifetime). actual = sum of per-tick [PERF] delta fields. Any Δ ≠ 0 is a bug in the tick loop's bookkeeping.

plain-rust Kernel NIC Drops (ethtool -S delta)

ethtool snapshots not available — baseline or final file missing in $LOGS_DIR/dut-plain-rust-ethtool-*.txt.

Full results artifact

Performance test results from GH Actions run 26163492881 show no regression — NDP is a new standalone module with zero changes to the existing RX/TX hot path. Mark IPv6 task 6 (NDP) as complete in the README roadmap.

IPv6 task 6: NdpHandler mirroring ArpHandler with Neighbor Solicitation and Neighbor Advertisement (RFC 4861), atomic NDP cache with fast-path lookup, auto-resolution, gratuitous NA on bind, and /proc/net/ipv6_neigh cache seeding. - 32 unit tests (roundtrip, validation, cache, handler, proc parsing, perf) - Performance: no regression (Run #18 in docs/perf-test-log.md) - Integration tests: all passed on Graviton hardware

github-actions · 2026-05-20T13:44:34Z

Synthetic Performance Results — Graviton (run)

Commit: eef88e18

✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)
✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)
✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)
✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)
✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)
✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)
✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)
✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)

Synthetic UDP Performance Results

Measures framework overhead: sync dpdk_udp::UdpSocket vs async (std::sync::Mutex + try_recv_from).

Test	Payload	Sync PPS	Async PPS	Ratio (sync/async)	Async ns/op
TX send_to	64B	11.6M	11.0M	1.0x	90
RX recv_from	64B	3.4M	4.4M	0.8x	226
TX send_to	1400B	1.6M	1.6M	1.0x	617
RX recv_from	1400B	982.8K	1.0M	0.9x	957

Avg sync/async ratio: 0.9x, worst: 1.0x

Good: Async wrapper is within 1.0x of sync — minimal framework overhead.

github-actions · 2026-05-20T13:44:44Z

Synthetic Performance Results (run)

Commit: eef88e18

✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)
✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)
✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)
✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)
✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)
✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)
✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)
✅ synthetic UDP socket bound to 10.0.0.1:9000 (MAC: 02:00:00:00:00:01)

Synthetic UDP Performance Results

Measures framework overhead: sync dpdk_udp::UdpSocket vs async (std::sync::Mutex + try_recv_from).

Test	Payload	Sync PPS	Async PPS	Ratio (sync/async)	Async ns/op
TX send_to	64B	11.5M	11.0M	1.0x	90
RX recv_from	64B	3.5M	4.5M	0.8x	220
TX send_to	1400B	1.6M	1.6M	1.0x	612
RX recv_from	1400B	1.1M	1.2M	0.9x	866

Avg sync/async ratio: 0.9x, worst: 1.0x

Good: Async wrapper is within 1.0x of sync — minimal framework overhead.

github-actions · 2026-05-20T13:52:52Z

[CI] Stage: Deploy

Infrastructure ready.

Sender: i-009204367b54d6594 (DPDK ENI: 10.0.1.198)
Receiver: i-0a43cdaa86fc642b9 (DPDK ENI: 10.0.1.16)
Both instances SSM-ready.

github-actions · 2026-05-20T13:53:27Z

[CI] Stage: Deploy

Infrastructure ready.

Sender: i-04a0b679e9271bae8 (DPDK ENI: 10.0.1.148)
Receiver: i-0f8ca8eb4f7771ff4 (DPDK ENI: 10.0.1.78)
Both instances SSM-ready.

github-actions · 2026-05-20T14:09:32Z

[CI] Stage: Summary

All tests PASSED.

ARP seeding: kernel /proc/net/arp (automatic)

tier1-dpdk-echo: 6 tests, 0 failures
tier2-kernel-interop: 4 tests, 0 failures
tier3-iperf-interop: 1 tests, 0 failures
tier3-iperf-interop: 1 tests, 0 failures

github-actions · 2026-05-20T14:11:31Z

[CI] Stage: Summary

All tests PASSED.

ARP seeding: kernel /proc/net/arp (automatic)

tier1-dpdk-echo: 6 tests, 0 failures
tier2-kernel-interop: 4 tests, 0 failures
tier3-iperf-interop: 1 tests, 0 failures
tier3-iperf-interop: 1 tests, 0 failures

github-actions · 2026-05-20T14:12:35Z

✅ Integration Tests Passed — Graviton (run)

Branch: 59/merge | Commit: eef88e18

Test Results

tier1-dpdk-echo.xml: 6 tests, 0 failures
tier2-kernel-interop.xml: 4 tests, 0 failures
tier3-iperf-sends.xml: 1 tests, 0 failures
tier3-our-app-sends.xml: 1 tests, 0 failures

Application Logs (last 20 lines)

receiver-echo-server.log

EAL: Detected CPU lcores: 2
EAL: Detected NUMA nodes: 1
EAL: Detected shared linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: VFIO support initialized
EAL: Using IOMMU type 8 (No-IOMMU)
EAL: Probe PCI driver: net_ena (1d0f:ec20) device: 0000:00:06.0 (socket -1)
TELEMETRY: No legacy callbacks, legacy socket not created
Warning: Some RX offloads not supported by device (flags: 0x1)
Warning: Some TX offloads not supported by device (flags: 0x1)
✅ DPDK UDP socket bound to 10.0.1.16:9000 (MAC: 02:c9:8d:e9:8e:89)
echo listening on 10.0.1.16:9000 (MTU=9001, max_udp_payload=8973)
Shutting down gracefully...

sender-echo-server.log

EAL: Detected CPU lcores: 2
EAL: Detected NUMA nodes: 1
EAL: Detected shared linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: VFIO support initialized
EAL: Using IOMMU type 8 (No-IOMMU)
EAL: Probe PCI driver: net_ena (1d0f:ec20) device: 0000:00:06.0 (socket -1)
TELEMETRY: No legacy callbacks, legacy socket not created
Warning: Some RX offloads not supported by device (flags: 0x1)
Warning: Some TX offloads not supported by device (flags: 0x1)
✅ DPDK UDP socket bound to 10.0.1.198:9000 (MAC: 02:4f:59:e9:34:83)
echo listening on 10.0.1.198:9000 (MTU=9001, max_udp_payload=8973)
Shutting down gracefully...

sender-test-client.log

EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: VFIO support initialized
TELEMETRY: No legacy callbacks, legacy socket not created
DPDK bind failed (Port init failed: Invalid port ID: 0), falling back to tokio
Backend: tokio
Sending packets...
Sent 12 bytes: 'arp-probe #1'
Received 12 bytes from 10.0.1.16:9000: 'arp-probe #1'
Test complete
[2026-05-20T13:57:14Z] INFO: ARP resolution succeeded (got response from peer)
[2026-05-20T13:57:14Z] INFO: Test: udp_send_receive
[2026-05-20T13:57:15Z] INFO: UDP send/receive succeeded
[2026-05-20T13:57:15Z] INFO: Test: echo_roundtrip
[2026-05-20T13:57:16Z] INFO: Echo roundtrip succeeded: 5/5 responses received
[2026-05-20T13:57:16Z] INFO: Test: payload_integrity
[2026-05-20T13:57:16Z] INFO: Response received, checking payload match...
[2026-05-20T13:57:16Z] INFO: Payload integrity verified (found in response)
[2026-05-20T13:57:16Z] INFO: JUnit XML written to: /tmp/test-results/tier2-kernel-interop.xml
[2026-05-20T13:57:16Z] INFO: Tier 2 sender tests complete. Results: /tmp/test-results/tier2-kernel-interop.xml

github-actions · 2026-05-20T14:13:57Z

✅ Integration Tests Passed (Run 26166574238)

Branch: 59/merge | Commit: eef88e18

Test Results

tier1-dpdk-echo.xml: 6 tests, 0 failures, skipped
tier2-kernel-interop.xml: 4 tests, 0 failures, skipped
tier3-iperf-sends.xml: 1 tests, 0 failures, skipped
tier3-our-app-sends.xml: 1 tests, 0 failures, skipped

Application Logs (last 20 lines)

receiver-echo-server.log

EAL: Detected CPU lcores: 2
EAL: Detected NUMA nodes: 1
EAL: Detected shared linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: VFIO support initialized
EAL: Using IOMMU type 8 (No-IOMMU)
EAL: Probe PCI driver: net_ena (1d0f:ec20) device: 0000:00:06.0 (socket -1)
TELEMETRY: No legacy callbacks, legacy socket not created
Warning: Some RX offloads not supported by device (flags: 0x1)
Warning: Some TX offloads not supported by device (flags: 0x1)
✅ DPDK UDP socket bound to 10.0.1.78:9000 (MAC: 02:43:5a:a9:8c:b9)
echo listening on 10.0.1.78:9000 (MTU=9001, max_udp_payload=8973)
Shutting down gracefully...

sender-echo-server.log

EAL: Detected CPU lcores: 2
EAL: Detected NUMA nodes: 1
EAL: Detected shared linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: VFIO support initialized
EAL: Using IOMMU type 8 (No-IOMMU)
EAL: Probe PCI driver: net_ena (1d0f:ec20) device: 0000:00:06.0 (socket -1)
TELEMETRY: No legacy callbacks, legacy socket not created
Warning: Some RX offloads not supported by device (flags: 0x1)
Warning: Some TX offloads not supported by device (flags: 0x1)
✅ DPDK UDP socket bound to 10.0.1.148:9000 (MAC: 02:85:97:a0:04:dd)
echo listening on 10.0.1.148:9000 (MTU=9001, max_udp_payload=8973)
Shutting down gracefully...

sender-test-client.log

EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: VFIO support initialized
TELEMETRY: No legacy callbacks, legacy socket not created
DPDK bind failed (Port init failed: Invalid port ID: 0), falling back to tokio
Backend: tokio
Sending packets...
Sent 12 bytes: 'arp-probe #1'
Received 12 bytes from 10.0.1.78:9000: 'arp-probe #1'
Test complete
[2026-05-20T13:59:16Z] INFO: ARP resolution succeeded (got response from peer)
[2026-05-20T13:59:16Z] INFO: Test: udp_send_receive
[2026-05-20T13:59:17Z] INFO: UDP send/receive succeeded
[2026-05-20T13:59:17Z] INFO: Test: echo_roundtrip
[2026-05-20T13:59:18Z] INFO: Echo roundtrip succeeded: 5/5 responses received
[2026-05-20T13:59:18Z] INFO: Test: payload_integrity
[2026-05-20T13:59:18Z] INFO: Response received, checking payload match...
[2026-05-20T13:59:18Z] INFO: Payload integrity verified (found in response)
[2026-05-20T13:59:18Z] INFO: JUnit XML written to: /tmp/test-results/tier2-kernel-interop.xml
[2026-05-20T13:59:18Z] INFO: Tier 2 sender tests complete. Results: /tmp/test-results/tier2-kernel-interop.xml

receiver-test-client-iperf.log

[2026-05-20T14:06:21Z] INFO: iperf-sends: sent 10 packets, received 10 responses
[2026-05-20T14:06:21Z] INFO: iperf-sends: PASS (sent >= 5 packets)
[2026-05-20T14:06:21Z] INFO: JUnit XML written to: /tmp/test-results/tier3-iperf-sends.xml
[2026-05-20T14:06:21Z] INFO: iperf-sends test complete

sender-test-client-iperf.log

Received 30 bytes from 10.0.1.78:9000: 'dpdk-to-kernel-test-payload #3'
Sent 30 bytes: 'dpdk-to-kernel-test-payload #4'
Received 30 bytes from 10.0.1.78:9000: 'dpdk-to-kernel-test-payload #4'
Sent 30 bytes: 'dpdk-to-kernel-test-payload #5'
Received 30 bytes from 10.0.1.78:9000: 'dpdk-to-kernel-test-payload #5'
Sent 30 bytes: 'dpdk-to-kernel-test-payload #6'
Received 30 bytes from 10.0.1.78:9000: 'dpdk-to-kernel-test-payload #6'
Sent 30 bytes: 'dpdk-to-kernel-test-payload #7'
Received 30 bytes from 10.0.1.78:9000: 'dpdk-to-kernel-test-payload #7'
Sent 30 bytes: 'dpdk-to-kernel-test-payload #8'
Received 30 bytes from 10.0.1.78:9000: 'dpdk-to-kernel-test-payload #8'
Sent 30 bytes: 'dpdk-to-kernel-test-payload #9'
Received 30 bytes from 10.0.1.78:9000: 'dpdk-to-kernel-test-payload #9'
Sent 31 bytes: 'dpdk-to-kernel-test-payload #10'
Received 31 bytes from 10.0.1.78:9000: 'dpdk-to-kernel-test-payload #10'
Test complete
[2026-05-20T14:05:22Z] INFO: our-app-sends: sent 10 packets, received 10 responses
[2026-05-20T14:05:22Z] INFO: our-app-sends: PASS (sent >= 5 packets)
[2026-05-20T14:05:22Z] INFO: JUnit XML written to: /tmp/test-results/tier3-our-app-sends.xml
[2026-05-20T14:05:22Z] INFO: our-app-sends test complete

Full Application Logs (last 200 lines each)

receiver-echo-server.log

EAL: Detected CPU lcores: 2
EAL: Detected NUMA nodes: 1
EAL: Detected shared linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: VFIO support initialized
EAL: Using IOMMU type 8 (No-IOMMU)
EAL: Probe PCI driver: net_ena (1d0f:ec20) device: 0000:00:06.0 (socket -1)
TELEMETRY: No legacy callbacks, legacy socket not created
Warning: Some RX offloads not supported by device (flags: 0x1)
Warning: Some TX offloads not supported by device (flags: 0x1)
✅ DPDK UDP socket bound to 10.0.1.78:9000 (MAC: 02:43:5a:a9:8c:b9)
echo listening on 10.0.1.78:9000 (MTU=9001, max_udp_payload=8973)
Shutting down gracefully...

sender-echo-server.log

EAL: Detected CPU lcores: 2
EAL: Detected NUMA nodes: 1
EAL: Detected shared linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: VFIO support initialized
EAL: Using IOMMU type 8 (No-IOMMU)
EAL: Probe PCI driver: net_ena (1d0f:ec20) device: 0000:00:06.0 (socket -1)
TELEMETRY: No legacy callbacks, legacy socket not created
Warning: Some RX offloads not supported by device (flags: 0x1)
Warning: Some TX offloads not supported by device (flags: 0x1)
✅ DPDK UDP socket bound to 10.0.1.148:9000 (MAC: 02:85:97:a0:04:dd)
echo listening on 10.0.1.148:9000 (MTU=9001, max_udp_payload=8973)
Shutting down gracefully...

sender-test-client.log

[2026-05-20T13:54:42Z] INFO: Test: arp_resolution
UDP Test Client
Target: 10.0.1.78:9000
Bind address: 10.0.1.148:0
Message: 'arp-probe'
Count: 1
EAL: Detected CPU lcores: 2
EAL: Detected NUMA nodes: 1
EAL: Detected shared linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: VFIO support initialized
EAL: Using IOMMU type 8 (No-IOMMU)
EAL: Probe PCI driver: net_ena (1d0f:ec20) device: 0000:00:06.0 (socket -1)
TELEMETRY: No legacy callbacks, legacy socket not created
Warning: Some RX offloads not supported by device (flags: 0x1)
Warning: Some TX offloads not supported by device (flags: 0x1)
✅ DPDK UDP socket bound to 10.0.1.148:32768 (MAC: 02:85:97:a0:04:dd)
Backend: dpdk
Sending packets...
Sent 12 bytes: 'arp-probe #1'
Received 12 bytes from 10.0.1.78:9000: 'arp-probe #1'
Test complete
[2026-05-20T13:54:44Z] INFO: ARP resolution succeeded (got response from peer)
[2026-05-20T13:54:44Z] INFO: Test: udp_send_receive
[2026-05-20T13:54:45Z] INFO: UDP send/receive succeeded
[2026-05-20T13:54:45Z] INFO: Test: echo_roundtrip
[2026-05-20T13:54:47Z] INFO: Echo roundtrip succeeded: 5/5 responses received
[2026-05-20T13:54:47Z] INFO: Test: payload_integrity
[2026-05-20T13:54:48Z] INFO: Response received, checking payload match...
[2026-05-20T13:54:48Z] INFO: Payload integrity verified (found in response)
[2026-05-20T13:54:48Z] INFO: Test: jumbo_diagnostics
[2026-05-20T13:54:48Z] INFO: === JUMBO FRAME DIAGNOSTICS ===
[2026-05-20T13:54:48Z] INFO: Interface MTU:
  9001
  65536
[2026-05-20T13:54:48Z] INFO:   ens5: MTU=9001
[2026-05-20T13:54:48Z] INFO:   lo: MTU=65536
[2026-05-20T13:54:48Z] INFO: Routing table MTU column:
Iface	Destination	Gateway 	Flags	RefCnt	Use	Metric	Mask		MTU	Window	IRTT                                                       
ens5	00000000	0101000A	0003	0	0	512	00000000	0	0	0                                                                             
ens5	0200000A	0101000A	0007	0	0	512	FFFFFFFF	0	0	0                                                                             
ens5	0001000A	00000000	0001	0	0	512	00FFFFFF	0	0	0                                                                             
ens5	0101000A	00000000	0005	0	0	512	FFFFFFFF	0	0	0                                                                             
[2026-05-20T13:54:48Z] INFO: DPDK port config (from echo server log):
[2026-05-20T13:54:48Z] INFO:   (no MTU info in echo log)
[2026-05-20T13:54:48Z] INFO: === END JUMBO DIAGNOSTICS ===
[2026-05-20T13:54:48Z] INFO: Test: jumbo_echo_8000
[2026-05-20T13:54:49Z] INFO: Jumbo output: UDP Test Client
Target: 10.0.1.78:9000
Bind address: 10.0.1.148:0
Payload size: 8000 bytes
Count: 3
EAL: Detected CPU lcores: 2
EAL: Detected NUMA nodes: 1
EAL: Detected shared linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: VFIO support initialized
EAL: Using IOMMU type 8 (No-IOMMU)
EAL: Probe PCI driver: net_ena (1d0f:ec20) device: 0000:00:06.0 (socket -1)
TELEMETRY: No legacy callbacks, legacy socket not created
Warning: Some RX offloads not supported by device (flags: 0x1)
Warning: Some TX offloads not supported by device (flags: 0x1)
✅ DPDK UDP socket bound to 10.0.1.148:32768 (MAC: 02:85:97:a0:04:dd)
Backend: dpdk
Sending packets...
Sent 8000 bytes (binary payload)
Received 8000 bytes from 10.0.1.78:9000 (expected 8000, OK)
Sent 8000 bytes (binary payload)
Received 8000 bytes from 10.0.1.78:9000 (expected 8000, OK)
Sent 8000 bytes (binary payload)
Received 8000 bytes from 10.0.1.78:9000 (expected 8000, OK)
Test complete
[2026-05-20T13:54:49Z] INFO: Jumbo frame echo succeeded: 3/3 responses with correct size
[2026-05-20T13:54:49Z] INFO: JUnit XML written to: /tmp/test-results/tier1-dpdk-echo.xml
[2026-05-20T13:54:49Z] INFO: Tier 1 sender tests complete. Results: /tmp/test-results/tier1-dpdk-echo.xml
[2026-05-20T13:59:16Z] INFO: Test: arp_resolution
UDP Test Client
Target: 10.0.1.78:9000
Bind address: 0.0.0.0:0
Message: 'arp-probe'
Count: 1
EAL: Detected CPU lcores: 2
EAL: Detected NUMA nodes: 1
EAL: Detected shared linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: VFIO support initialized
TELEMETRY: No legacy callbacks, legacy socket not created
DPDK bind failed (Port init failed: Invalid port ID: 0), falling back to tokio
Backend: tokio
Sending packets...
Sent 12 bytes: 'arp-probe #1'
Received 12 bytes from 10.0.1.78:9000: 'arp-probe #1'
Test complete
[2026-05-20T13:59:16Z] INFO: ARP resolution succeeded (got response from peer)
[2026-05-20T13:59:16Z] INFO: Test: udp_send_receive
[2026-05-20T13:59:17Z] INFO: UDP send/receive succeeded
[2026-05-20T13:59:17Z] INFO: Test: echo_roundtrip
[2026-05-20T13:59:18Z] INFO: Echo roundtrip succeeded: 5/5 responses received
[2026-05-20T13:59:18Z] INFO: Test: payload_integrity
[2026-05-20T13:59:18Z] INFO: Response received, checking payload match...
[2026-05-20T13:59:18Z] INFO: Payload integrity verified (found in response)
[2026-05-20T13:59:18Z] INFO: JUnit XML written to: /tmp/test-results/tier2-kernel-interop.xml
[2026-05-20T13:59:18Z] INFO: Tier 2 sender tests complete. Results: /tmp/test-results/tier2-kernel-interop.xml

receiver-test-client-iperf.log

[2026-05-20T14:06:21Z] INFO: iperf-sends: sent 10 packets, received 10 responses
[2026-05-20T14:06:21Z] INFO: iperf-sends: PASS (sent >= 5 packets)
[2026-05-20T14:06:21Z] INFO: JUnit XML written to: /tmp/test-results/tier3-iperf-sends.xml
[2026-05-20T14:06:21Z] INFO: iperf-sends test complete

sender-test-client-iperf.log

[2026-05-20T14:05:19Z] INFO: Pre-flight: checking DPDK state and ARP cache...
[2026-05-20T14:05:19Z] INFO: Local IP: 10.0.1.148, Peer IP: 10.0.1.78, Port: 9000
[2026-05-20T14:05:19Z] INFO: /proc/net/arp contents:
IP address       HW type     Flags       HW address            Mask     Device
10.0.1.1         0x1         0x2         02:50:14:ee:4c:ed     *        ens5
10.0.1.178       0x1         0x2         02:99:af:0d:0c:d5     *        ens5
10.0.1.148       0x1         0x2         02:85:97:a0:04:dd     *        ens5
10.0.1.78        0x1         0x2         02:43:5a:a9:8c:b9     *        ens5
[2026-05-20T14:05:19Z] INFO: DPDK runtime state:
No /var/run/dpdk/ directory
[2026-05-20T14:05:19Z] INFO: vfio-pci bindings:
0000:00:06.0
bind
module
new_id
remove_id
uevent
unbind
[2026-05-20T14:05:19Z] INFO: Test binary: /opt/dpdk-stdlib/target/release/test-client
-rwxr-xr-x. 2 root root 1905056 May 20 13:52 /opt/dpdk-stdlib/target/release/test-client
[2026-05-20T14:05:19Z] INFO: Launching test-client: /opt/dpdk-stdlib/target/release/test-client --target 10.0.1.78 --port 9000 --bind-ip 10.0.1.148 --count 10 --delay 200
[2026-05-20T14:05:22Z] INFO: Test client output: UDP Test Client
Target: 10.0.1.78:9000
Bind address: 10.0.1.148:0
Message: 'dpdk-to-kernel-test-payload'
Count: 10
EAL: Detected CPU lcores: 2
EAL: Detected NUMA nodes: 1
EAL: Detected shared linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: VFIO support initialized
EAL: Using IOMMU type 8 (No-IOMMU)
EAL: Probe PCI driver: net_ena (1d0f:ec20) device: 0000:00:06.0 (socket -1)
TELEMETRY: No legacy callbacks, legacy socket not created
Warning: Some RX offloads not supported by device (flags: 0x1)
Warning: Some TX offloads not supported by device (flags: 0x1)
✅ DPDK UDP socket bound to 10.0.1.148:32768 (MAC: 02:85:97:a0:04:dd)
Backend: dpdk
Sending packets...
Sent 30 bytes: 'dpdk-to-kernel-test-payload #1'
Received 30 bytes from 10.0.1.78:9000: 'dpdk-to-kernel-test-payload #1'
Sent 30 bytes: 'dpdk-to-kernel-test-payload #2'
Received 30 bytes from 10.0.1.78:9000: 'dpdk-to-kernel-test-payload #2'
Sent 30 bytes: 'dpdk-to-kernel-test-payload #3'
Received 30 bytes from 10.0.1.78:9000: 'dpdk-to-kernel-test-payload #3'
Sent 30 bytes: 'dpdk-to-kernel-test-payload #4'
Received 30 bytes from 10.0.1.78:9000: 'dpdk-to-kernel-test-payload #4'
Sent 30 bytes: 'dpdk-to-kernel-test-payload #5'
Received 30 bytes from 10.0.1.78:9000: 'dpdk-to-kernel-test-payload #5'
Sent 30 bytes: 'dpdk-to-kernel-test-payload #6'
Received 30 bytes from 10.0.1.78:9000: 'dpdk-to-kernel-test-payload #6'
Sent 30 bytes: 'dpdk-to-kernel-test-payload #7'
Received 30 bytes from 10.0.1.78:9000: 'dpdk-to-kernel-test-payload #7'
Sent 30 bytes: 'dpdk-to-kernel-test-payload #8'
Received 30 bytes from 10.0.1.78:9000: 'dpdk-to-kernel-test-payload #8'
Sent 30 bytes: 'dpdk-to-kernel-test-payload #9'
Received 30 bytes from 10.0.1.78:9000: 'dpdk-to-kernel-test-payload #9'
Sent 31 bytes: 'dpdk-to-kernel-test-payload #10'
Received 31 bytes from 10.0.1.78:9000: 'dpdk-to-kernel-test-payload #10'
Test complete
[2026-05-20T14:05:22Z] INFO: our-app-sends: sent 10 packets, received 10 responses
[2026-05-20T14:05:22Z] INFO: our-app-sends: PASS (sent >= 5 packets)
[2026-05-20T14:05:22Z] INFO: JUnit XML written to: /tmp/test-results/tier3-our-app-sends.xml
[2026-05-20T14:05:22Z] INFO: our-app-sends test complete

⚠️ SSM Command Failures (receiver-ssm-failure.log)

=== Polling timeout after 30s ===
Status: InProgress
Instance: i-0f8ca8eb4f7771ff4 (receiver)
Command ID: 99becb81-ca43-4f17-aa18-7b9bdfdd2d59

=== STDOUT ===


=== STDERR ===


=== Polling timeout after 30s ===
Status: InProgress
Instance: i-0f8ca8eb4f7771ff4 (receiver)
Command ID: 07f1f8e6-a5ca-40f9-a9f4-be39e7670d80

=== STDOUT ===


=== STDERR ===


=== Polling timeout after 30s ===
Status: InProgress
Instance: i-0f8ca8eb4f7771ff4 (receiver)
Command ID: 8cebe4ea-6d13-4dda-96e9-218b3dca7afc

=== STDOUT ===


=== STDERR ===


=== Polling timeout after 30s ===
Status: InProgress
Instance: i-0f8ca8eb4f7771ff4 (receiver)
Command ID: fdbf5b7b-0a65-4fbd-adff-906137e15fbb

=== STDOUT ===


=== STDERR ===

⚠️ SSM Command Failures (sender-ssm-failure.log)

=== Polling timeout 120s (SSM timeout: 90s, command: cd /opt/dpdk-stdlib && bash scripts/integration-tests/configure-eni.sh --action unbind && bash scripts/integration-tests/configure-eni.sh --action assign-ip --ip 10.0.1.148) ===
Status: InProgress
Instance: i-04a0b679e9271bae8 (sender)
Command ID: b0e22db4-45d2-4407-939c-47ad2fe5678b

=== STDOUT ===


=== STDERR ===


=== Polling timeout after 30s ===
Status: InProgress
Instance: i-04a0b679e9271bae8 (sender)
Command ID: 61d536e5-a1c0-49b8-be42-9aedab06dd37

=== STDOUT ===


=== STDERR ===

Network & PCI State

receiver-network-interfaces.log

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host noprefixroute 
       valid_lft forever preferred_lft forever
2: ens5: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9001 qdisc mq state UP group default qlen 1000
    link/ether 02:88:f8:c6:22:07 brd ff:ff:ff:ff:ff:ff
    altname enp0s5
    altname eni-0fb763e39e814dcee
    altname device-number-0.0
    inet 10.0.1.84/24 metric 512 brd 10.0.1.255 scope global dynamic ens5
       valid_lft 2206sec preferred_lft 2206sec
    inet6 fe80::88:f8ff:fec6:2207/64 scope link proto kernel_ll 
       valid_lft forever preferred_lft forever

sender-network-interfaces.log

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host noprefixroute 
       valid_lft forever preferred_lft forever
2: ens5: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9001 qdisc mq state UP group default qlen 1000
    link/ether 02:c7:87:42:62:93 brd ff:ff:ff:ff:ff:ff
    altname enp0s5
    altname eni-0e29f7c47914d9315
    altname device-number-0.0
    inet 10.0.1.191/24 metric 512 brd 10.0.1.255 scope global dynamic ens5
       valid_lft 2231sec preferred_lft 2231sec
    inet6 fe80::c7:87ff:fe42:6293/64 scope link proto kernel_ll 
       valid_lft forever preferred_lft forever

receiver-networking-diag-baseline.txt

=== NETWORKING DIAGNOSTICS ===
timestamp: 2026-05-20T13:54:04Z
hostname: ip-10-0-1-84.ec2.internal
kernel: 6.18.25-57.109.amzn2023.x86_64

=== DPDK PORT STATUS ===

Network devices using DPDK-compatible driver
============================================
0000:00:06.0 'Elastic Network Adapter (ENA) ec20' drv=vfio-pci unused=ena

Network devices using kernel driver
===================================
0000:00:05.0 'Elastic Network Adapter (ENA) ec20' if=ens5 drv=ena unused=vfio-pci *Active*

No 'Baseband' devices detected
==============================

No 'Crypto' devices detected
============================

No 'DMA' devices detected
=========================

No 'Eventdev' devices detected
==============================

No 'Mempool' devices detected
=============================

No 'Compress' devices detected
==============================

No 'Misc (rawdev)' devices detected
===================================

No 'Regex' devices detected
===========================

=== IP ADDRESSES ===
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host noprefixroute 
       valid_lft forever preferred_lft forever
2: ens5: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9001 qdisc mq state UP group default qlen 1000
    link/ether 02:88:f8:c6:22:07 brd ff:ff:ff:ff:ff:ff
    altname enp0s5
    altname eni-0fb763e39e814dcee
    altname device-number-0.0
    inet 10.0.1.84/24 metric 512 brd 10.0.1.255 scope global dynamic ens5
       valid_lft 3242sec preferred_lft 3242sec
    inet6 fe80::88:f8ff:fec6:2207/64 scope link proto kernel_ll 
       valid_lft forever preferred_lft forever

=== ARP TABLE ===
10.0.1.1 dev ens5 lladdr 02:50:14:ee:4c:ed REACHABLE 
10.0.1.178 dev ens5 lladdr 02:99:af:0d:0c:d5 REACHABLE 

=== ROUTE TABLE ===
default via 10.0.1.1 dev ens5 proto dhcp src 10.0.1.84 metric 512 
10.0.0.2 via 10.0.1.1 dev ens5 proto dhcp src 10.0.1.84 metric 512 
10.0.1.0/24 dev ens5 proto kernel scope link src 10.0.1.84 metric 512 
10.0.1.1 dev ens5 proto dhcp scope link src 10.0.1.84 metric 512 

=== IMDS: ENI INFORMATION ===
ENI MACs found: 02:43:5a:a9:8c:b9/ 02:88:f8:c6:22:07/ 

--- ENI: 02:43:5a:a9:8c:b9/ ---
  device-number: 1
  local-ipv4s: 10.0.1.78
  subnet-id: subnet-081a5413ebc7bbe01
  subnet-cidr: 10.0.1.0/24

--- ENI: 02:88:f8:c6:22:07/ ---
  device-number: 0
  local-ipv4s: 10.0.1.84
  subnet-id: subnet-081a5413ebc7bbe01
  subnet-cidr: 10.0.1.0/24


=== GATEWAY ARP TEST ===
Gateway IP: 10.0.1.1
Gateway ARP entry:
10.0.1.1 dev ens5 lladdr 02:50:14:ee:4c:ed REACHABLE 

arping result:
ARPING 10.0.1.1 from 10.0.1.84 ens5
Unicast reply from 10.0.1.1 [02:50:14:EE:4C:ED]  0.539ms
Sent 1 probes (1 broadcast(s))
Received 1 response(s)

=== HUGEPAGE STATUS ===
AnonHugePages:         0 kB
ShmemHugePages:        0 kB
FileHugePages:     18432 kB
HugePages_Total:    1024
HugePages_Free:     1024
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
Hugetlb:         2097152 kB

=== VFIO STATUS ===
total 0
drwxr-xr-x.  2 root root       80 May 20 13:53 .
drwxr-xr-x. 14 root root     3100 May 20 13:53 ..
crw-------.  1 root root 243,   0 May 20 13:53 noiommu-0
crw-rw-rw-.  1 root root  10, 196 May 20 13:48 vfio

noiommu mode:
Y

=== DPDK SHARED MEMORY ===
no /var/run/dpdk/ directory (clean state)

=== DPDK-RELATED DMESG (last 30 lines) ===
[    0.054593] printk: legacy console [ttyS0] enabled
[    0.055720] x2apic enabled
[    0.060439] mitigations: Enabled attack vectors: user_kernel, user_user, guest_host, guest_guest, SMT mitigations: auto
[    0.060554] x86/fpu: Enabled xstate features 0x2ff, context size is 2568 bytes, using 'compacted' format.
[    0.070134] audit: type=2000 audit(1779284882.006:1): state=initialized audit_enabled=0 res=1
[    0.080739] kprobes: kprobe jump-optimization is enabled. All kprobes are optimized if possible.
[    0.139757] ACPI: Interpreter enabled
[    0.139908] ACPI: Enabled 2 GPEs in block 00 to 0F
[    0.147911] pci 0000:00:05.0: enabling Extended Tags
[    0.212117] SGI XFS with ACLs, security attributes, quota, no debug enabled
[    0.217667] ACPI: \_SB_.LNKD: Enabled at IRQ 11
[    0.221146] IPI shorthand broadcast: enabled
[    2.816508] systemd[1]: Mounting dev-hugepages.mount - Huge Pages File System...
[    2.858477] systemd[1]: Mounted dev-hugepages.mount - Huge Pages File System.
[    2.937750] VFIO - User Level meta-driver version: 0.3
[    3.390837] ena 0000:00:05.0: Elastic Network Adapter (ENA) v2.16.1g
[    3.403250] ena 0000:00:05.0: ENA device version: 0.10
[    3.404015] ena 0000:00:05.0: ENA controller version: 0.0.1 implementation version 1
[    3.505054] ena 0000:00:05.0: ENA Large LLQ is disabled
[    3.517153] ena 0000:00:05.0: Elastic Network Adapter (ENA) found at mem c0500000, mac addr 02:88:f8:c6:22:07
[    3.558946] ena 0000:00:05.0 ens5: renamed from eth0
[  311.207070] pci 0000:00:06.0: enabling Extended Tags
[  311.211418] ena 0000:00:06.0: enabling device (0000 -> 0002)
[  311.224616] ena 0000:00:06.0: ENA device version: 0.10
[  311.225380] ena 0000:00:06.0: ENA controller version: 0.0.1 implementation version 1
[  311.326557] ena 0000:00:06.0: ENA Large LLQ is disabled
[  311.339505] ena 0000:00:06.0: Elastic Network Adapter (ENA) found at mem c0508000, mac addr 02:43:5a:a9:8c:b9
[  311.346870] ena 0000:00:06.0 ens6: renamed from eth0
[  349.471186] vfio-pci 0000:00:06.0: Adding to iommu group 0
[  349.472670] vfio-pci 0000:00:06.0: Adding kernel taint for vfio-noiommu group on device

=== DPDK-RELATED PROCESSES ===
no DPDK processes running

=== END DIAGNOSTICS ===

sender-networking-diag-baseline.txt

=== NETWORKING DIAGNOSTICS ===
timestamp: 2026-05-20T13:53:56Z
hostname: ip-10-0-1-191.ec2.internal
kernel: 6.18.25-57.109.amzn2023.x86_64

=== DPDK PORT STATUS ===

Network devices using DPDK-compatible driver
============================================
0000:00:06.0 'Elastic Network Adapter (ENA) ec20' drv=vfio-pci unused=ena

Network devices using kernel driver
===================================
0000:00:05.0 'Elastic Network Adapter (ENA) ec20' if=ens5 drv=ena unused=vfio-pci *Active*

No 'Baseband' devices detected
==============================

No 'Crypto' devices detected
============================

No 'DMA' devices detected
=========================

No 'Eventdev' devices detected
==============================

No 'Mempool' devices detected
=============================

No 'Compress' devices detected
==============================

No 'Misc (rawdev)' devices detected
===================================

No 'Regex' devices detected
===========================

=== IP ADDRESSES ===
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host noprefixroute 
       valid_lft forever preferred_lft forever
2: ens5: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9001 qdisc mq state UP group default qlen 1000
    link/ether 02:c7:87:42:62:93 brd ff:ff:ff:ff:ff:ff
    altname enp0s5
    altname eni-0e29f7c47914d9315
    altname device-number-0.0
    inet 10.0.1.191/24 metric 512 brd 10.0.1.255 scope global dynamic ens5
       valid_lft 3253sec preferred_lft 3253sec
    inet6 fe80::c7:87ff:fe42:6293/64 scope link proto kernel_ll 
       valid_lft forever preferred_lft forever

=== ARP TABLE ===
10.0.1.1 dev ens5 lladdr 02:50:14:ee:4c:ed REACHABLE 
10.0.1.178 dev ens5 lladdr 02:99:af:0d:0c:d5 REACHABLE 
10.0.1.81 dev ens5 lladdr 02:d4:d3:a2:9f:e1 REACHABLE 

=== ROUTE TABLE ===
default via 10.0.1.1 dev ens5 proto dhcp src 10.0.1.191 metric 512 
10.0.0.2 via 10.0.1.1 dev ens5 proto dhcp src 10.0.1.191 metric 512 
10.0.1.0/24 dev ens5 proto kernel scope link src 10.0.1.191 metric 512 
10.0.1.1 dev ens5 proto dhcp scope link src 10.0.1.191 metric 512 

=== IMDS: ENI INFORMATION ===
ENI MACs found: 02:85:97:a0:04:dd/ 02:c7:87:42:62:93/ 

--- ENI: 02:85:97:a0:04:dd/ ---
  device-number: 1
  local-ipv4s: 10.0.1.148
  subnet-id: subnet-081a5413ebc7bbe01
  subnet-cidr: 10.0.1.0/24

--- ENI: 02:c7:87:42:62:93/ ---
  device-number: 0
  local-ipv4s: 10.0.1.191
  subnet-id: subnet-081a5413ebc7bbe01
  subnet-cidr: 10.0.1.0/24


=== GATEWAY ARP TEST ===
Gateway IP: 10.0.1.1
Gateway ARP entry:
10.0.1.1 dev ens5 lladdr 02:50:14:ee:4c:ed REACHABLE 

arping result:
ARPING 10.0.1.1 from 10.0.1.191 ens5
Unicast reply from 10.0.1.1 [02:50:14:EE:4C:ED]  0.537ms
Sent 1 probes (1 broadcast(s))
Received 1 response(s)

=== HUGEPAGE STATUS ===
AnonHugePages:         0 kB
ShmemHugePages:        0 kB
FileHugePages:     18432 kB
HugePages_Total:    1024
HugePages_Free:     1024
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
Hugetlb:         2097152 kB

=== VFIO STATUS ===
total 0
drwxr-xr-x.  2 root root       80 May 20 13:53 .
drwxr-xr-x. 14 root root     3100 May 20 13:53 ..
crw-------.  1 root root 243,   0 May 20 13:53 noiommu-0
crw-rw-rw-.  1 root root  10, 196 May 20 13:48 vfio

noiommu mode:
Y

=== DPDK SHARED MEMORY ===
no /var/run/dpdk/ directory (clean state)

=== DPDK-RELATED DMESG (last 30 lines) ===
[    0.054168] printk: legacy console [ttyS0] enabled
[    0.055272] x2apic enabled
[    0.059957] mitigations: Enabled attack vectors: user_kernel, user_user, guest_host, guest_guest, SMT mitigations: auto
[    0.060070] x86/fpu: Enabled xstate features 0x2ff, context size is 2568 bytes, using 'compacted' format.
[    0.069664] audit: type=2000 audit(1779284882.779:1): state=initialized audit_enabled=0 res=1
[    0.080279] kprobes: kprobe jump-optimization is enabled. All kprobes are optimized if possible.
[    0.131172] ACPI: Interpreter enabled
[    0.131172] ACPI: Enabled 2 GPEs in block 00 to 0F
[    0.145602] pci 0000:00:05.0: enabling Extended Tags
[    0.244094] SGI XFS with ACLs, security attributes, quota, no debug enabled
[    0.249673] ACPI: \_SB_.LNKD: Enabled at IRQ 11
[    0.253046] IPI shorthand broadcast: enabled
[    3.895482] systemd[1]: Mounting dev-hugepages.mount - Huge Pages File System...
[    3.929914] systemd[1]: Mounted dev-hugepages.mount - Huge Pages File System.
[    4.016898] VFIO - User Level meta-driver version: 0.3
[    4.428483] ena 0000:00:05.0: Elastic Network Adapter (ENA) v2.16.1g
[    4.443525] ena 0000:00:05.0: ENA device version: 0.10
[    4.444277] ena 0000:00:05.0: ENA controller version: 0.0.1 implementation version 1
[    4.555023] ena 0000:00:05.0: ENA Large LLQ is disabled
[    4.567427] ena 0000:00:05.0: Elastic Network Adapter (ENA) found at mem c0500000, mac addr 02:c7:87:42:62:93
[    4.680279] ena 0000:00:05.0 ens5: renamed from eth0
[  311.496063] pci 0000:00:06.0: enabling Extended Tags
[  311.500169] ena 0000:00:06.0: enabling device (0000 -> 0002)
[  311.510877] ena 0000:00:06.0: ENA device version: 0.10
[  311.511668] ena 0000:00:06.0: ENA controller version: 0.0.1 implementation version 1
[  311.610853] ena 0000:00:06.0: ENA Large LLQ is disabled
[  311.623029] ena 0000:00:06.0: Elastic Network Adapter (ENA) found at mem c0508000, mac addr 02:85:97:a0:04:dd
[  311.630294] ena 0000:00:06.0 ens6: renamed from eth0
[  342.074043] vfio-pci 0000:00:06.0: Adding to iommu group 0
[  342.075501] vfio-pci 0000:00:06.0: Adding kernel taint for vfio-noiommu group on device

=== DPDK-RELATED PROCESSES ===
no DPDK processes running

=== END DIAGNOSTICS ===

⚠️ Crash Diagnostics

receiver-dmesg-crashes.log

[    0.069483] pid_max: default: 32768 minimum: 301
[    0.151859] iommu: Default domain type: Translated
[    0.160209] NetLabel:  unlabeled traffic allowed by default
[    0.192469] PCI: CLS 0 bytes, default 64
[    0.235607] nvme nvme0: 2/0/0 default/read/poll queues
[    0.401203] systemd[1]: systemd 252.23-11.amzn2023 running in system mode (+PAM +AUDIT +SELINUX -APPARMOR +IMA +SMACK +SECCOMP -GCRYPT -GNUTLS +OPENSSL +ACL +BLKID +CURL +ELFUTILS +FIDO2 +IDN2 -IDN -IPTC +KMOD +LIBCRYPTSETUP +LIBFDISK +PCRE2 +PWQUALITY +P11KIT +QRENCODE +TPM2 -BZIP2 -LZ4 +XZ +ZLIB -ZSTD +BPF_FRAMEWORK +XKBCOMMON +UTMP +SYSVINIT default-hierarchy=unified)
[    0.401329] systemd[1]: No hostname configured, using default hostname.
[    0.467807] systemd[1]: Queued start job for default target initrd.target.
[    2.049812] systemd[1]: systemd 252.23-11.amzn2023 running in system mode (+PAM +AUDIT +SELINUX -APPARMOR +IMA +SMACK +SECCOMP -GCRYPT -GNUTLS +OPENSSL +ACL +BLKID +CURL +ELFUTILS +FIDO2 +IDN2 -IDN -IPTC +KMOD +LIBCRYPTSETUP +LIBFDISK +PCRE2 +PWQUALITY +P11KIT +QRENCODE +TPM2 -BZIP2 -LZ4 +XZ +ZLIB -ZSTD +BPF_FRAMEWORK +XKBCOMMON +UTMP +SYSVINIT default-hierarchy=unified)
[  385.890016] vfio-pci 0000:00:06.0: vfio-noiommu device opened by user (echo:4429)
[  658.497341] vfio-pci 0000:00:06.0: vfio-noiommu device opened by user (echo:4917)
[ 1260.831123] vfio-pci 0000:00:06.0: vfio-noiommu device opened by user (echo:6081)

sender-dmesg-crashes.log

[    0.069015] pid_max: default: 32768 minimum: 301
[    0.149596] iommu: Default domain type: Translated
[    0.149739] NetLabel:  unlabeled traffic allowed by default
[    0.199407] PCI: CLS 0 bytes, default 64
[    0.259417] nvme nvme0: 2/0/0 default/read/poll queues
[    0.411008] systemd[1]: systemd 252.23-11.amzn2023 running in system mode (+PAM +AUDIT +SELINUX -APPARMOR +IMA +SMACK +SECCOMP -GCRYPT -GNUTLS +OPENSSL +ACL +BLKID +CURL +ELFUTILS +FIDO2 +IDN2 -IDN -IPTC +KMOD +LIBCRYPTSETUP +LIBFDISK +PCRE2 +PWQUALITY +P11KIT +QRENCODE +TPM2 -BZIP2 -LZ4 +XZ +ZLIB -ZSTD +BPF_FRAMEWORK +XKBCOMMON +UTMP +SYSVINIT default-hierarchy=unified)
[    0.411132] systemd[1]: No hostname configured, using default hostname.
[    0.473943] systemd[1]: Queued start job for default target initrd.target.
[    3.001958] systemd[1]: systemd 252.23-11.amzn2023 running in system mode (+PAM +AUDIT +SELINUX -APPARMOR +IMA +SMACK +SECCOMP -GCRYPT -GNUTLS +OPENSSL +ACL +BLKID +CURL +ELFUTILS +FIDO2 +IDN2 -IDN -IPTC +KMOD +LIBCRYPTSETUP +LIBFDISK +PCRE2 +PWQUALITY +P11KIT +QRENCODE +TPM2 -BZIP2 -LZ4 +XZ +ZLIB -ZSTD +BPF_FRAMEWORK +XKBCOMMON +UTMP +SYSVINIT default-hierarchy=unified)
[ 1081.373457] vfio-pci 0000:00:06.0: vfio-noiommu device opened by user (echo:5736)

Kernel Console (dmesg)

receiver-console-output.log (PCI/driver events only)

[  385.888403] vfio-pci 0000:00:06.0: reset done
[  385.890016] vfio-pci 0000:00:06.0: vfio-noiommu device opened by user (echo:4429)
[  385.891472] vfio-pci 0000:00:06.0: resetting
[  386.108259] vfio-pci 0000:00:06.0: reset done
[  464.911226] vfio-pci 0000:00:06.0: Removing from iommu group 0
[  465.924204] ena 0000:00:06.0: ENA device version: 0.10
[  465.924960] ena 0000:00:06.0: ENA controller version: 0.0.1 implementation version 1
[  466.025846] ena 0000:00:06.0: ENA Large LLQ is disabled
[  466.037989] ena 0000:00:06.0: Elastic Network Adapter (ENA) found at mem c0508000, mac addr 02:43:5a:a9:8c:b9
[  466.046401] ena 0000:00:06.0 ens6: renamed from eth0
[  485.639824] vfio-pci 0000:00:06.0: Adding to iommu group 0
[  485.641290] vfio-pci 0000:00:06.0: Adding kernel taint for vfio-noiommu group on device
[  658.262648] vfio-pci 0000:00:06.0: resetting
[  658.495741] vfio-pci 0000:00:06.0: reset done
[  658.497341] vfio-pci 0000:00:06.0: vfio-noiommu device opened by user (echo:4917)
[  658.498817] vfio-pci 0000:00:06.0: resetting
[  658.725547] vfio-pci 0000:00:06.0: reset done
[  732.480422] vfio-pci 0000:00:06.0: Removing from iommu group 0
[  733.493184] ena 0000:00:06.0: ENA device version: 0.10
[  733.493965] ena 0000:00:06.0: ENA controller version: 0.0.1 implementation version 1
[  733.593171] ena 0000:00:06.0: ENA Large LLQ is disabled
[  733.605327] ena 0000:00:06.0: Elastic Network Adapter (ENA) found at mem c0508000, mac addr 02:43:5a:a9:8c:b9
[  733.613130] ena 0000:00:06.0 ens6: renamed from eth0
[ 1181.022353] vfio-pci 0000:00:06.0: Adding to iommu group 0
[ 1181.023824] vfio-pci 0000:00:06.0: Adding kernel taint for vfio-noiommu group on device
[ 1260.611292] vfio-pci 0000:00:06.0: resetting
[ 1260.829535] vfio-pci 0000:00:06.0: reset done
[ 1260.831123] vfio-pci 0000:00:06.0: vfio-noiommu device opened by user (echo:6081)
[ 1260.832542] vfio-pci 0000:00:06.0: resetting
[ 1261.049382] vfio-pci 0000:00:06.0: reset done

sender-console-output.log (PCI/driver events only)

[ 1081.374965] vfio-pci 0000:00:06.0: resetting
[ 1081.591692] vfio-pci 0000:00:06.0: reset done
[ 1143.009771] vfio-pci 0000:00:06.0: Removing from iommu group 0
[ 1144.019234] ena 0000:00:06.0: ENA device version: 0.10
[ 1144.020020] ena 0000:00:06.0: ENA controller version: 0.0.1 implementation version 1
[ 1144.119213] ena 0000:00:06.0: ENA Large LLQ is disabled
[ 1144.131335] ena 0000:00:06.0: Elastic Network Adapter (ENA) found at mem c0508000, mac addr 02:85:97:a0:04:dd
[ 1144.143768] ena 0000:00:06.0 ens6: renamed from eth0 (while UP)
[ 1173.382860] vfio-pci 0000:00:06.0: Adding to iommu group 0
[ 1173.384307] vfio-pci 0000:00:06.0: Adding kernel taint for vfio-noiommu group on device
[ 1275.752252] vfio-pci 0000:00:06.0: resetting
[ 1275.979072] vfio-pci 0000:00:06.0: reset done
[ 1275.980677] vfio-pci 0000:00:06.0: vfio-noiommu device opened by user (tokio-rt-worker:6176)
[ 1275.982349] vfio-pci 0000:00:06.0: resetting
[ 1276.198940] vfio-pci 0000:00:06.0: reset done
[ 1276.476800] vfio-pci 0000:00:06.0: resetting
[ 1276.698957] vfio-pci 0000:00:06.0: reset done
[ 1276.700575] vfio-pci 0000:00:06.0: vfio-noiommu device opened by user (tokio-rt-worker:6196)
[ 1276.702278] vfio-pci 0000:00:06.0: resetting
[ 1276.918908] vfio-pci 0000:00:06.0: reset done
[ 1278.218908] vfio-pci 0000:00:06.0: resetting
[ 1278.428904] vfio-pci 0000:00:06.0: reset done
[ 1278.430519] vfio-pci 0000:00:06.0: vfio-noiommu device opened by user (tokio-rt-worker:6219)
[ 1278.432175] vfio-pci 0000:00:06.0: resetting
[ 1278.648889] vfio-pci 0000:00:06.0: reset done
[ 1279.938538] vfio-pci 0000:00:06.0: resetting
[ 1280.158927] vfio-pci 0000:00:06.0: reset done
[ 1280.160519] vfio-pci 0000:00:06.0: vfio-noiommu device opened by user (tokio-rt-worker:6242)
[ 1280.162164] vfio-pci 0000:00:06.0: resetting
[ 1280.378858] vfio-pci 0000:00:06.0: reset done

docs: add Run #18 perf results and mark NDP complete in roadmap

f6d97db

Performance test results from GH Actions run 26163492881 show no regression — NDP is a new standalone module with zero changes to the existing RX/TX hot path. Mark IPv6 task 6 (NDP) as complete in the README roadmap.

gspivey merged commit dc3edc6 into development May 21, 2026
9 checks passed

gspivey deleted the agent/ndp branch May 21, 2026 00:48

Conversation

gspivey commented May 20, 2026

Roadmap item

What's implemented

Tests added

Tradeoffs

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github-actions Bot commented May 20, 2026

[Perf] Stage: Deploy

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[Perf] Stage: Instances Ready

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[Perf] Stage: TRex Config

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github-actions Bot commented May 20, 2026

[Perf] Stage: TRex Config OK

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[Perf] Stage: TRex Started

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[Perf] DUT Ready

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[Perf] Stage: Benchmark (1/4)

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[Perf] Benchmark Diag: plain-rust preflight

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Synthetic Performance Results — Graviton (run)

Synthetic UDP Performance Results

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Synthetic Performance Results (run)

Synthetic UDP Performance Results

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[Perf] Benchmark Diag: plain-rust result

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[Perf] Stage: Benchmark (2/4)

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[CI] Stage: Deploy

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[CI] Stage: Deploy

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[Perf] Benchmark Diag: rust-dpdk preflight

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[Perf] Benchmark Diag: rust-dpdk result

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[Perf] Stage: Benchmark (3/4)

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[Perf] Benchmark Diag: tokio-dpdk preflight

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[CI] Stage: Summary

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[CI] Stage: Summary

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github-actions Bot commented May 20, 2026

✅ Integration Tests Passed — Graviton (run)

Test Results

Application Logs (last 20 lines)

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github-actions Bot commented May 20, 2026

✅ Integration Tests Passed (Run 26163443554)

Test Results

Application Logs (last 20 lines)

receiver-echo-server.log

sender-echo-server.log

[Perf] Benchmark Diag: `plain-rust` preflight

[Perf] Benchmark Diag: `plain-rust` result

[Perf] Benchmark Diag: `rust-dpdk` preflight

[Perf] Benchmark Diag: `rust-dpdk` result

[Perf] Benchmark Diag: `tokio-dpdk` preflight

[Perf] Benchmark Diag: `tokio-dpdk` result

[Perf] Benchmark Diag: `native-dpdk` preflight

[Perf] Benchmark Diag: `native-dpdk` result