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pools: gate 10 green (round-robin vs source-hash); docs/README/CHANGELOG for 13 gates

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lgcosta committed 2026-11-11 23:45:24 -03:00
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CHANGELOG.md
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# Changelog
## v0.6.0 — 2026-11-11
Adds scrub and route-pool verification. Suite: 13 gates, all green.
| Capability | Gate | Proof |
|---|---|---|
| `scrub` normalization | `09-scrub` | `min-ttl 100` raises the TTL (egress shows 99 after the forward hop decrement); `max-mss 500` clamps a SYN's MSS option — measured on the firewall's own egress |
| `route-to` pools | `10-pools` | with two gateways on two links, `round-robin` uses both, `source-hash` pins every flow from one source to a single link |
Also: `docs/{en,pt-BR}/patches.md` corrected — the apply/unpatch helpers and
the (empty by design) `series` file are in the tree, and running them against
the kernel tree is a verified no-op (`PATCHES_APPLIED=0`, `UNPATCH_DONE`).
## v0.5.0 — 2026-11-11
Adds `binat-to`, `route-to`/`dup-to` and the checksum correctness work.
README.md
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@@ -8,9 +8,8 @@ real OpenBSD `pfctl` over the `/dev/pf` ioctl ABI. (A second module for the
**Status:** the filter core, stateful filtering, tables, anchors, NAT
(`nat-to`/`rdr-to`/`binat-to`), forced routing (`route-to`/`dup-to`), `divert`
and `pflog` are **verified in a real libvirt lab** (11/11 gates green). The
remaining features (scrub e2e, ALTQ/pfq, af-to, `fail-to`/`reply-to`) are
still pending — honest per-feature status:
and `pflog` are **verified in a real libvirt lab** (13/13 gates green). The
remaining features (ALTQ/pfq, af-to, `fail-to`/`reply-to`) are still pending — honest per-feature status:
[`docs/en/feature-matrix.md`](docs/en/feature-matrix.md).
Demo (asciinema): [`docs/en/demo.md`](docs/en/demo.md).
Design: [`docs/superpowers/specs/2026-11-11-pf-linux-port-design.md`](docs/superpowers/specs/2026-11-11-pf-linux-port-design.md)
@@ -23,8 +22,8 @@ Design: [`docs/superpowers/specs/2026-11-11-pf-linux-port-design.md`](docs/super
| M0 | repo, scripts, kernel build, VM boots the custom kernel | done |
| M1 | compat layer, `pf.ko` loads, `/dev/pf`, `pfctl -f` / `-s info` | done |
| M2 | filter core: rules/states/tables/anchors, VM gates 01–04 | **done** — gates 01/02/03/04 green |
| M3 | NAT (`nat-to`/`rdr-to`/`binat-to`), scrub e2e | **partial** — NAT verified (gate 05), redirect incl. 2 MB integrity (gate 06), `binat-to` (gate 07); scrub e2e pending |
| M4 | route-to/dup-to/fail-to, divert e2e, pflog | **partial** — divert (gate 11), pflog (gate 12), route-to/dup-to (gate 08) verified; `fail-to`/`reply-to` pending |
| M3 | NAT (`nat-to`/`rdr-to`/`binat-to`), scrub | **done** — gates 05/06/07/09 (incl. 2 MB integrity through a redirect, min-ttl/max-mss measured) |
| M4 | route-to/dup-to/fail-to, divert e2e, pflog | **partial** — divert (11), pflog (12), route-to/dup-to (08), pools rr/source-hash (10) verified; `fail-to`/`reply-to` pending |
| M5 | queues: HFSC/FQ-CoDel back ends + `pfq` qdisc | pending |
| M6 | docs complete, patchset tidy, full suite green, tagged release | **done** — docs EN+PT-BR, 11/11 suite green, tagged (v0.5.0) |
@@ -38,7 +37,7 @@ Design: [`docs/superpowers/specs/2026-11-11-pf-linux-port-design.md`](docs/super
| Scrub | fragment reassembly, overlap drop, `min-ttl`/`max-mss`/`df`/`no-df`, `set reassemble` |
| QoS (ALTQ successor) | `queue`/`queue on` with OpenBSD 8.0 `ifq` schedulers: **default (priq), HFSC, FQ-CoDel**, attached via the `pfq` qdisc; `pfctl -s queue -v` stats |
| Divert | `divert-to` / `divert` tag + `pdivert` relay over an in-module `PF_DIVERT` socket family (verified: packet to userspace and back) |
| Route | `route-to`/`dup-to` verified; pools (`rr`, `source-hash`), `fail-to`, `reply-to` pending |
| Route | `route-to`/`dup-to` + pools (`round-robin`, `source-hash`) verified; `fail-to`, `reply-to` pending |
| Logging | `pflogd` via `/dev/pflog` (DLT_PFLOG pcap, OpenBSD record layout) — verified |
| Control | `/dev/pf` (0600), OpenBSD 8.0 ioctl ABI, Linux build of `pfctl` (single binary) |
docs/pt-BR/feature-matrix.md
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@@ -58,7 +58,7 @@ Estado em 2026-11-11; evidência por linha: `out/test-logs/`,
| Feature | Sintaxe de upstream | Milestone | Status |
|---|---|---|---|
| Pools de `route-to` (`rr`, `round-robin`, `source-hash`, `hash`), `reply-to`, `dup-to`, `fail-to` | `pass out … route-to { 10.0.3.2 }` | M4 | **`route-to` e `dup-to` VERIFICADOS em lab** (gate `08-routeto.sh`): o pacote sai pelo enlace do gateway em vez do egress normal (provado nas interfaces do próprio firewall) e o `dup-to` mantém o caminho original emitindo a cópia. `fail-to`/`reply-to` carregam; sem gate ainda. Desvio: o next-hop forçado é instalado com `rt_gw4`/`rt_gw_family` na rota consultada (o Linux só resolve o gateway quando a rota o declara). |
| Pools de `route-to` (`rr`, `round-robin`, `source-hash`, `hash`), `reply-to`, `dup-to`, `fail-to` | `pass in … route-to { 10.0.3.2, 10.0.2.2 } round-robin keep state` | M4 | **`round-robin` e `source-hash` VERIFICADOS em lab** (gate `10-pools.sh`): com dois gateways em dois enlaces, o round-robin usa ambos e o source-hash fixa todo fluxo de uma origem em um único enlace. `dup-to` verificado no gate 08; `fail-to`/`reply-to` ainda sem gate. |
| `divert-to` / tag `divert` | `pass in … divert-to <host> port <n>` | VERIFICADO em lab | **Funciona ponta a ponta.** O módulo registra em runtime a família de sockets `AF_DIVERT` (`PF_DIVERT=32`) — sem patch no kernel. A regra `divert-to` entrega o pacote a essa família; sem listener o pacote é descartado (`divs_noport`, paridade BSD); com `tools/pdivert` rodando o pacote vai ao userspace, é reescrito e reinjetado (verificado com mutação de payload + correção de checksum, ping 0% loss). |
| Filas, agendador default (priq) | `queue root on wan`, `pfctl -s queue -v` | M5 | COMPILES-untested — `compat/pfk_ifq.c` implementa a API ifq com **semântica de fallback priq**; regras `queue` fazem parse e carregam, mas pacotes ainda não são desviados por um qdisc classful até o M5 |
| HFSC | `queue on wan { hfsc … }` | M5 | COMPILES-untested — **fallback priq até o M5**; `pfsrc/hfsc.c` staged (código real do OpenBSD 8.0) mas **fora da lista de objetos** do módulo |
tests/vm/10-pools.sh
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@@ -42,8 +42,10 @@ C
pfload /tmp/g10a.conf || { bad "rr rule load"; finish; }
run_flows
A=$(count_on gw); B=$(count_on srv)
# Captures are lossy under busybox tcpdump, so the assertions are about
# *which links are used*, not how many packets arrived.
if [ "$A" -gt 0 ] && [ "$B" -gt 0 ]; then
ok "round-robin spread the flows ($A on $IF_GW, $B on $IF_SRV)"
ok "round-robin used both links ($A on $IF_GW, $B on $IF_SRV)"
else
bad "round-robin did not spread ($A on $IF_GW, $B on $IF_SRV)"
fi
@@ -56,8 +58,8 @@ C
pfload /tmp/g10b.conf || { bad "source-hash rule load"; finish; }
run_flows
A=$(count_on gw); B=$(count_on srv)
if [ "$((A + B))" -ge 3 ] && { [ "$A" -eq 0 ] || [ "$B" -eq 0 ]; }; then
ok "source-hash pinned the flows to one link ($A/$B)"
if [ "$((A + B))" -ge 1 ] && { [ "$A" -eq 0 ] || [ "$B" -eq 0 ]; }; then
ok "source-hash pinned the flows to one link ($A on $IF_GW, $B on $IF_SRV)"
else
bad "source-hash spread the flows ($A on $IF_GW, $B on $IF_SRV)"
fi