{"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\/sq\/blog\/novosti-interneta\/arhitektura-nabora-komand-bpf-poluchila-status-predlozhennogo-standarta","title":{"rendered":"Arkitektura e grupit t\u00eb komandave BPF ka fituar statusin e standardit t\u00eb propozuar.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Komiteti IETF (Internet Engineering Task Force), q\u00eb merret me zhvillimin e protokolleve dhe arkitektur\u00ebs s\u00eb internetit, p\u00ebrfundoi formimin e RFC p\u00ebr arkitektur\u00ebn e grupit t\u00eb komandave BPF dhe publikoi especificimin e lidhur me identifikuesin RFC 9669. RFC fitoi statusin \"Standardi i Propozuar\", pas s\u00eb cil\u00ebs do t\u00eb filloj\u00eb puna p\u00ebr t'i dh\u00ebn\u00eb RFC statusin e standardit t\u00eb draftit (Draft Standard), q\u00eb n\u00eb t\u00eb v\u00ebrtet\u00eb do t\u00eb thot\u00eb stabilizimin e plot\u00eb dhe marrjen parasysh t\u00eb t\u00eb gjitha komenteve t\u00eb shprehura. <\/p>\n

Specifikimi i publikuar p\u00ebrshkruan nj\u00eb grup instruksionesh t\u00eb kodit t\u00eb bytes BPF dhe nj\u00eb makin\u00eb virtuale me nivel t\u00eb ul\u00ebt, e cila p\u00ebrdoret n\u00eb n\u00ebn-sistemin e b\u00ebrtham\u00ebs Linux eBPF p\u00ebr t\u00eb ekzekutuar p\u00ebrpunues t\u00eb jasht\u00ebm, t\u00eb aft\u00eb t\u00eb ndryshojn\u00eb n\u00eb m\u00ebnyr\u00eb dinamike sjelljen e sistemit pa nevoj\u00ebn p\u00ebr t\u00eb ndryshuar kodin e b\u00ebrtham\u00ebs. N\u00eb thelb, eBPF implementon nj\u00eb procesor virtual t\u00eb thjesht\u00eb me grupin e tij t\u00eb regjistrave, instrukcione t\u00eb ngjashme me RISC, nj\u00eb grumbull dhe nj\u00eb num\u00ebrues instruksionesh. Programet BPF zakonisht krijohen n\u00eb nj\u00eb n\u00ebnset t\u00eb gjuh\u00ebs C, pastaj p\u00ebrpunohen n\u00eb kodin e bytes, i cili \u00ebsht\u00eb i p\u00ebrshtatsh\u00ebm p\u00ebr ekzekutimin n\u00eb makin\u00ebn virtuale<\/a>. Makina virtuale mund t\u00eb ekzekutoj\u00eb programe BPF duke p\u00ebrdorur si interpretimin ashtu edhe duke aplikuar JIT-kompilimin p\u00ebr t\u00eb p\u00ebrkthyer kodin bajt n\u00eb instruksione makinerie n\u00eb koh\u00eb reale. <\/p>\n

Pranohet se standardizimi i arkitektur\u00ebs s\u00eb grupit t\u00eb komandave BPF do t\u00eb sh\u00ebrbej\u00eb si nj\u00eb nxitje p\u00ebr krijimin e implementimeve t\u00eb pal\u00ebve t\u00eb treta, t\u00eb cilat jan\u00eb t\u00eb pajtueshme me makin\u00ebn virtuale eBPF dhe q\u00eb jan\u00eb t\u00eb afta t\u00eb ekzekutojn\u00eb programet BPF t\u00eb shkruara p\u00ebr b\u00ebrtham\u00ebn Linux. Disa prodhues t\u00eb adaptuesve rrjet\u00ebrore po punojn\u00eb n\u00eb zhvillimin e mjeteve p\u00ebr p\u00ebrshpejtimin harduerik t\u00eb ekzekutimit t\u00eb p\u00ebrpunuesve BPF t\u00eb paketave rrjet\u00ebsore. makinave virtuale<\/a> Ideja \u00ebsht\u00eb t\u00eb zgjerohet funksionaliteti i n\u00ebnsistemit XDP (eXpress Data Path) p\u00ebr t\u00eb ekzekutuar programet BPF jo vet\u00ebm n\u00eb nivelin e drejtuesve t\u00eb rrjetit, por edhe n\u00eb an\u00ebn e kart\u00ebs rrjet\u00ebsore. <\/p>\n

P\u00ebr shembull, kompania Netronome ka shtuar mb\u00ebshtetje p\u00ebr BPF n\u00eb adapterin Netronome Agilio CX SmartNIC dhe ka ofruar nj\u00eb koleksion shembujsh t\u00eb programeve universale BPF, t\u00eb cilat mund t\u00eb ekzekutohen jo vet\u00ebm me CPU n\u00eb b\u00ebrtham\u00eb me \u00e7do driver t\u00eb pajtuesh\u00ebm me XDP, por edhe n\u00eb an\u00ebn e kart\u00ebs rrjet\u00eb, duke lejuar marrjen e vendimeve p\u00ebr hedhjen, modifikimin ose ridrejtimin e paketave pa shpenzuar burime CPU. Ve\u00e7mas po zhvillohet teknologjia XRP (eXpress Resubmission Path), e cila lejon p\u00ebrdorimin e BPF p\u00ebr t\u00eb nxjerr\u00eb disa operacione me disqet NVMe, t\u00eb tilla si puna me indeksat dhe agregimin e t\u00eb dh\u00ebnave, n\u00eb nivelin e driverit NVMe ose n\u00eb nj\u00eb pajisje t\u00eb jashtme. <\/p>\n

V\u00ebrehet se implementimi m\u00eb i gjer\u00eb i mund\u00ebsive t\u00eb tilla ende pengohet nga rreziqet e lidhura me shkeljen e pajtueshm\u00ebris\u00eb dhe nevoj\u00ebs p\u00ebr t\u00eb ndjekur gjendjen e eBPF n\u00eb b\u00ebrtham\u00eb. P\u00ebr shkak t\u00eb k\u00ebtyre rreziqeve, disa prodhues kan\u00eb shtyr\u00eb p\u00ebrfshirjen e mjeteve p\u00ebr p\u00ebrshpejtimin e BPF n\u00eb pajisjet e tyre deri n\u00eb krijimin e nj\u00eb standardi.
\n
Burimi: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\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. 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