Date: Wed, 1 May 2013 09:18:10 -0700 From: Adrian Chadd <adrian@freebsd.org> To: lev@freebsd.org Cc: freebsd-wireless@freebsd.org Subject: Re: New hardware, old problem: stuck beacon when here is WiFi traffic Message-ID: <CAJ-Vmo=fFEkRr4-R3g1%2B%2BMq7QoTGD_OFWpHc5jpgbwEcgrOJYQ@mail.gmail.com> In-Reply-To: <CAJ-VmonvS_=_vgJufRc-5d4NGfkKtpsUEZh%2BTaE_Th-dEj2W9A@mail.gmail.com> References: <2810538978.20130423164137@serebryakov.spb.ru> <CAJ-Vmom4UDoz7EgdnVeQ%2BALuFFXkH9t_Uj7=FwL77S5rKfUD1g@mail.gmail.com> <1813905823.20130423184528@serebryakov.spb.ru> <CAJ-VmomhRaKODxis09MjAhUbAUOw%2B6jWBY48JpZR_JgfZZLKcQ@mail.gmail.com> <184105677.20130424002002@serebryakov.spb.ru> <CAJ-VmokVmHDXwE7S5koSqtFjPXQ_VUPhj8gfMruDM2k-DyUMPw@mail.gmail.com> <1936997795.20130424003555@serebryakov.spb.ru> <CAJ-Vmokx2QhcjcsgA-_kqjX63Vu4CLk7HkuyALautbnzp61ywQ@mail.gmail.com> <886711115.20130424004702@serebryakov.spb.ru> <CAJ-VmoksSTBC7jmC-_hvBeJFSD0k28HoZodaWdHm0AF0d1yZJg@mail.gmail.com> <6010292503.20130426001447@serebryakov.spb.ru> <CAJ-VmomUsPgHTVGaKHZ_YE%2Bu1ZOjGqrVfh2uYmvOs6gKmhnxOw@mail.gmail.com> <CAJ-VmokZBbmHbruKJV-8kvTyOTsiq5_XHnfqUYo3vO68872Q=w@mail.gmail.com> <99510815.20130426122508@serebryakov.spb.ru> <CAJ-VmoktRPbnDRbRuwA4i8w50kExs2pwD4yBawL6iOz7F4Bknw@mail.gmail.com> <CAJ-VmonCao99MOrm97tQS_f1xS9tieQfg-nQUB4APWVmdJJUBg@mail.gmail.com> <CAJ-Vmokz=0rZM-nHtt9S%2Ba-SxRLuyP%2ByDhSAbLpr0xFS%2BpO3vA@mail.gmail.com> <187241224.20130429113623@serebryakov.spb.ru> <CAJ-Vmo=MzeJsKHfVoipPQqCRmkOHWk6p-iZNaXDwye6oG%2B76xg@mail.gmail.com> <CAJ-Vmo=b-kBDWKz=Y709kYEsYQt3ZRczCN0wG9zDRk=sR60%2Btg@mail.gmail.com> <124956607.20130430122459@serebryakov.spb.ru> <CAJ-VmonQXyB_Aik-ApSmgRqT3yhD5Bqrx3zj%2BKM%2BitVmZhY0TQ@mail.gmail.com> <146903383.20130501000714@serebryakov.spb.ru> <CAJ-Vmo=n27vAzsEPDwaO%2BjxS-n42WBbiNyfpvmnO931q1CKcDA@mail.gmail.com> <94204652.20130501133220@serebryakov.spb.ru> <CAJ-VmonvS_=_vgJufRc-5d4NGfkKtpsUEZh%2BTaE_Th-dEj2W9A@mail.gmail.com>
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I'm trying to plan out how to potentially address this. I don't know whether it'll be enough to just set TXE to 1 for that queue and restart TX that way. I was hoping you'd post some more results with aggregate frames, but it doesn't seem to be happening. I'm hoping I don't have to stop the DMA for that queue and re-start it again. That's going to be relatively error-prone. ath9k and the reference driver have a bunch of workarounds to notice a stalled TX queue and restart things. I'm not really happy doing that; I'd rather try and fix the problem(s) before 10.0. Adrian
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