{"id":120511,"date":"2024-11-06T19:09:06","date_gmt":"2024-11-06T17:09:06","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/arhitektura-nabora-komand-bpf-poluchila-status-predlozhennogo-standarta"},"modified":"2024-11-06T19:09:06","modified_gmt":"2024-11-06T17:09:06","slug":"arhitektura-nabora-komand-bpf-poluchila-status-predlozhennogo-standarta","status":"publish","type":"post","link":"https:\/\/prohoster.info\/fr\/blog\/news\/arhitektura-nabora-komand-bpf-poluchila-status-predlozhennogo-standarta","title":{"rendered":"L'architecture du jeu d'instructions BPF a obtenu le statut de norme propos\u00e9e","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Le comit\u00e9 IETF (Internet Engineering Task Force), charg\u00e9 du d\u00e9veloppement des protocoles et de l'architecture de l'internet, a finalis\u00e9 la RFC pour l'architecture de l'ensemble des commandes BPF et a publi\u00e9 la sp\u00e9cification associ\u00e9e sous l'identifiant RFC 9669. La RFC a obtenu le statut de \u00ab Norme propos\u00e9e \u00bb, apr\u00e8s quoi le travail commencera pour conf\u00e9rer \u00e0 la RFC le statut de norme de brouillon (Draft Standard), ce qui signifie en fait une stabilisation compl\u00e8te et une prise en compte de tous les commentaires exprim\u00e9s.       <\/p>\n<p>La sp\u00e9cification publi\u00e9e d\u00e9crit un ensemble d'instructions de bytecode BPF et une machine virtuelle de bas niveau utilis\u00e9e dans la sous-syst\u00e8me du noyau Linux eBPF pour ex\u00e9cuter des gestionnaires externes capables de modifier \u00e0 la vol\u00e9e le comportement du syst\u00e8me sans avoir \u00e0 modifier le code du noyau. En effet, eBPF mise en \u0153uvre un processeur virtuel simple avec son propre ensemble de registres, des instructions de type RISC, une pile et un compteur d'instructions. Les programmes BPF sont g\u00e9n\u00e9ralement cr\u00e9\u00e9s sur un sous-ensemble du langage C, puis compil\u00e9s en bytecode, adapt\u00e9 \u00e0 l'ex\u00e9cution dans <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/fr\/vps\/abuzoustojchivye-vps\/\"   title=\"une machine virtuelle\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"4346\">une machine virtuelle<\/a>. La machine virtuelle peut ex\u00e9cuter des programmes BPF \u00e0 la fois en utilisant l'interpr\u00e9tation et en appliquant la compilation JIT pour traduire le bytecode \u00e0 la vol\u00e9e en instructions machine.     <\/p>\n<p>Il est pr\u00e9vu que la normalisation de l'architecture de l'ensemble d'instructions BPF devienne un stimulant pour la cr\u00e9ation de r\u00e9alisations tiers, compatibles avec la machine virtuelle eBPF et capables d'ex\u00e9cuter des programmes BPF \u00e9crits pour le noyau Linux. Certains fabricants d'adaptateurs r\u00e9seau travaillent \u00e0 la cr\u00e9ation de <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/fr\/vps\/\"   title=\"machines virtuelles\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2184\">machines virtuelles<\/a> moyens pour l'acc\u00e9l\u00e9ration mat\u00e9rielle de l'ex\u00e9cution des gestionnaires BPF pour les paquets r\u00e9seau. L'id\u00e9e est d'\u00e9largir les capacit\u00e9s de la sous-syst\u00e8me XDP (eXpress Data Path) pour ex\u00e9cuter des programmes BPF non seulement au niveau du pilote r\u00e9seau, mais aussi du c\u00f4t\u00e9 de la carte r\u00e9seau.       <\/p>\n<p>Par exemple, la soci\u00e9t\u00e9 Netronome a ajout\u00e9 le support de BPF dans l'adaptateur Netronome Agilio CX SmartNIC et a fourni une collection d'exemples de programmes BPF universels, qui peuvent \u00eatre ex\u00e9cut\u00e9s non seulement via le CPU dans le noyau avec n'importe quel pilote compatible XDP, mais aussi du c\u00f4t\u00e9 de la carte r\u00e9seau, ce qui permet de prendre des d\u00e9cisions sur le rejet, la modification ou la redirection des paquets sans utiliser les ressources du CPU. Une technologie distincte, XRP (eXpress Resubmission Path), est \u00e9galement en d\u00e9veloppement, permettant d'utiliser BPF pour transf\u00e9rer certaines op\u00e9rations avec des disques NVMe, telles que le travail avec des index et l'agr\u00e9gation de donn\u00e9es, au niveau du pilote NVMe ou \u00e0 un dispositif externe.    <\/p>\n<p>Il est not\u00e9 que l'adoption plus large de telles capacit\u00e9s a \u00e9t\u00e9 entrav\u00e9e par des risques li\u00e9s \u00e0 la compatibilit\u00e9 et \u00e0 la n\u00e9cessit\u00e9 de suivre l'\u00e9tat de eBPF dans le noyau. En raison de ces risques, certains fabricants ont report\u00e9 l'int\u00e9gration des moyens d'acc\u00e9l\u00e9ration mat\u00e9rielle BPF dans leurs dispositifs jusqu'\u00e0 ce qu'un standard soit \u00e9tabli.<br \/>\n<br \/>Source : <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=62187\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u043e\u043c\u0438\u0442\u0435\u0442 IETF (Internet Engineering Task Force), \u0437\u0430\u043d\u0438\u043c\u0430\u044e\u0449\u0438\u0439\u0441\u044f \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u0435\u043c \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u043e\u0432 \u0438 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b \u0438\u043d\u0442\u0435\u0440\u043d\u0435\u0442\u0430, \u0437\u0430\u0432\u0435\u0440\u0448\u0438\u043b \u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 RFC \u0434\u043b\u044f \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b \u043d\u0430\u0431\u043e\u0440\u0430 \u043a\u043e\u043c\u0430\u043d\u0434 BPF \u0438 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u0443\u044e \u0441 \u043d\u0438\u043c \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044e \u043f\u043e\u0434 \u0438\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u043e\u043c RFC 9669. RFC \u043f\u043e\u043b\u0443\u0447\u0438\u043b \u0441\u0442\u0430\u0442\u0443\u0441 &#171;\u041f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043d\u043e\u0433\u043e \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0430&#187;, \u043f\u043e\u0441\u043b\u0435 \u0447\u0435\u0433\u043e \u043d\u0430\u0447\u043d\u0451\u0442\u0441\u044f \u0440\u0430\u0431\u043e\u0442\u0430 \u043f\u043e \u043f\u0440\u0438\u0434\u0430\u043d\u0438\u044e RFC \u0441\u0442\u0430\u0442\u0443\u0441\u0430 \u0447\u0435\u0440\u043d\u043e\u0432\u043e\u0433\u043e \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0430 (Draft Standard), \u0444\u0430\u043a\u0442\u0438\u0447\u0435\u0441\u043a\u0438 \u043e\u0437\u043d\u0430\u0447\u0430\u044e\u0449\u0435\u0433\u043e \u043f\u043e\u043b\u043d\u0443\u044e \u0441\u0442\u0430\u0431\u0438\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u0438 \u0443\u0447\u0451\u0442 \u0432\u0441\u0435\u0445 \u0432\u044b\u0441\u043a\u0430\u0437\u0430\u043d\u043d\u044b\u0445 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-120511","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041a\u043e\u043c\u0438\u0442\u0435\u0442 IETF (Internet Engineering Task Force), \u0437\u0430\u043d\u0438\u043c\u0430\u044e\u0449\u0438\u0439\u0441\u044f \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u0435\u043c \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u043e\u0432 \u0438 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b \u0438\u043d\u0442\u0435\u0440\u043d\u0435\u0442\u0430, \u0437\u0430\u0432\u0435\u0440\u0448\u0438\u043b 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