{"id":121433,"date":"2025-01-20T21:46:10","date_gmt":"2025-01-20T19:46:11","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/otkryt-instrumentarij-dlya-programmiruemyh-ethernet-kommutatorov-intel-tofino"},"modified":"2025-01-20T21:46:10","modified_gmt":"2025-01-20T19:46:11","slug":"otkryt-instrumentarij-dlya-programmiruemyh-ethernet-kommutatorov-intel-tofino","status":"publish","type":"post","link":"https:\/\/prohoster.info\/fr\/blog\/news\/otkryt-instrumentarij-dlya-programmiruemyh-ethernet-kommutatorov-intel-tofino","title":{"rendered":"Un environnement de d\u00e9veloppement pour les commutateurs Ethernet programmables Intel Tofino a \u00e9t\u00e9 ouvert.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

La soci\u00e9t\u00e9 Intel a ouvert un outil permettant de cr\u00e9er des applications personnalis\u00e9es pour le traitement des paquets dans les commutateurs Ethernet programmables de la s\u00e9rie Tofino. Sous licence Apache 2.0, le code source du backend du compilateur p4c et des composants de l'environnement de d\u00e9veloppement Intel P4 Studio, tels que les pilotes, le mod\u00e8le de simulation de commutateur, le serveur et le client pour le protocole BF Runtime, a \u00e9t\u00e9 publi\u00e9. Pour cr\u00e9er des applications, un langage de programmation orient\u00e9 domaine, P4 (Programming Protocol-independent Packet Processors), est utilis\u00e9 pour d\u00e9finir la logique de traitement des paquets dans les dispositifs r\u00e9seau tels que les cartes r\u00e9seau, les commutateurs, les routeurs et les pare-feu. <\/p>\n

Le backend publi\u00e9 permet de traduire les programmes \u00e9crits en P4 dans un format qui peut \u00eatre install\u00e9 sur les commutateurs de la s\u00e9rie Intel Tofino. Cela permet aux utilisateurs des commutateurs de cr\u00e9er des applications qui \u00e9tendent la fonctionnalit\u00e9 standard, modifient la logique op\u00e9rationnelle ou adaptent le dispositif aux sp\u00e9cificit\u00e9s de leurs r\u00e9seaux. <\/p>\n

Les programmes en P4 sont compil\u00e9s en formats adapt\u00e9s aux plateformes cibles, qui peuvent \u00eatre mat\u00e9rielles (FPGA, ASIC programmables) ou logicielles (x86, BPF). Avec le code destin\u00e9 \u00e0 \u00eatre install\u00e9 sur les syst\u00e8mes cibles, le compilateur g\u00e9n\u00e8re un runtime pour g\u00e9rer l'application en utilisant les protocoles Protobuf\/gRPC et l'API P4Runtime. <\/p>\n

La logique de fonctionnement typique des programmes consiste \u00e0 classifier les paquets selon leurs en-t\u00eates et \u00e0 ex\u00e9cuter des actions sur les paquets entrants, telles que le redirection, le rejet, la modification du TTL et le remplacement des champs. Le langage n'est pas li\u00e9 aux protocoles r\u00e9seau et, au lieu de prendre en charge par d\u00e9faut des protocoles communs comme IP, Ethernet, TCP et VxLAN, il offre aux d\u00e9veloppeurs la possibilit\u00e9 de d\u00e9finir n'importe quels protocoles en fonction des applications compil\u00e9es (le d\u00e9veloppeur attache une description des formats d'en-t\u00eate et des champs de protocole).

\"Un<\/center> <\/p>\n

En plus du backend publi\u00e9 pour les commutateurs Intel Tofino, le projet P4 propose un backend pour compiler les applications P4 en code C, qui peut ensuite \u00eatre compil\u00e9 dans un format ex\u00e9cutable au sein de une machine virtuelle<\/a> eBPF dans le noyau Linux. Le projet d\u00e9veloppe \u00e9galement un simulateur de commutateur open source qui peut \u00eatre utilis\u00e9 pour effectuer des exp\u00e9riences dans un r\u00e9seau virtuel Mininet, ainsi qu'un backend pour compiler des programmes P4 pour le simulateur.
\n
Source : opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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\u043a \u043a\u043e\u043c\u043f\u0438\u043b\u044f\u0442\u043e\u0440\u0443 p4c \u0438 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u043e\u0432 \u0441\u0440\u0435\u0434\u044b \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 Intel P4 Studio, \u0442\u0430\u043a\u0438\u0445 \u043a\u0430\u043a \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u044b, \u043c\u043e\u0434\u0435\u043b\u044c \u0441\u0438\u043c\u0443\u043b\u044f\u0446\u0438\u0438 \u043a\u043e\u043c\u043c\u0443\u0430\u0442\u043e\u0440\u0430, \u0441\u0435\u0440\u0432\u0435\u0440 \u0438 \u043a\u043b\u0438\u0435\u043d\u0442 \u0434\u043b\u044f \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 BF Runtime. \u0414\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u0442\u0441\u044f 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