sergio
42fee6fcbc
Tres mensajes y un EtherType propio bastan para extender el grafo de
objetos —direccionado por contenido, ya BLAKE3— a otras maquinas
renaser que escuchen en la misma red de capa-2. Sin TCP, sin IP,
sin DNS.
Crate nueva 'akasha/' (no_std compartido, gemela de 'formato',
excluida del workspace):
- MensajeAkasha enum con SolicitarObjeto(id), ProveedorObjeto(id,
payload), AnunciarRaiz(id).
- Codec: postcard (mismo que ya usa el grafo en disco).
- EtherType: 0x88B5. MAX_PAYLOAD_AKASHA = 1486 (MTU sin fragmentar).
- Helpers componer_frame(src, dst, msg) y analizar_frame(bytes) que
distinguen EtherType ajeno, frame truncado y payload basura.
- 6 pruebas unitarias en verde.
Modulo nuevo 'kernel/src/akasha.rs' con tres oficios:
1. Demuxer (drenar_y_demultiplexar): drena la cola RX del dispositivo
virtio-net y demultiplexa: frames AoE con payload valido los
procesa el respondedor; el resto va a una cola del userspace que
'sys_net_recibir' ahora lee. Frames 0x88B5 con payload
no-postcard (saludo de pregon) se cuentan y tambien viajan al
userspace.
2. Atencion de mensajes (procesar):
- SolicitarObjeto(id): consulta almacen::recuperar; si tenemos el
objeto, respondemos ProveedorObjeto unicast con objeto.serializar()
y re-hashing de defensa en profundidad.
- ProveedorObjeto(id, payload): verifica blake3(payload)==id antes
de absorber con almacen::almacenar.
- AnunciarRaiz(id): si ignoramos el nodo, le solicitamos al emisor.
3. Faro periodico (difundir_raiz cada 5 s): broadcast del hash del
manifiesto actual. Cadencia medida contra reloj::milisegundos(),
no contra los awaits — el interprete wasmi de los apps degrada
la cadencia de EsperaFrame::await a varios cientos de ms, asi
que se mide contra el reloj monotono y los oficios per-fotograma
se enganchan al tic del compositor (cuyo latido es fiable).
Contadores ResumenAkasha (rx/tx por variante, descartados, cola del
usuario) listos para un futuro indicador AoE en la barra de tareas.
Cambios complementarios:
- sys_net_recibir lee de akasha::pop_usuario, no de
drivers::red::recibir_en (que queda #[allow(dead_code)] como
primitiva del driver para diagnostico).
- tarea_red queda corta: envia un ARP al gateway y termina. El
demuxer y el faro viven en el tic del compositor.
Verificacion:
- 'cargo test -p akasha' → 6 pruebas en verde.
- QEMU headless 60 s con -object filter-dump → 14 frames: 11
AnunciarRaiz (Δ promedio 5.86 s sobre 5.00 s de target), 2 ARP
y el pregon hello. Cada AnunciarRaiz lleva el hash del manifiesto
'2f3deadfcc7dae25..' en 33 bytes postcard sobre 47 bytes de frame.
- COM1 vuelca 'akasha :: ANUNCIO emitido :: raiz=2f3deadfcc7dae25..'
en cada disparo.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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