From owner-freebsd-wireless@freebsd.org Sat Aug 19 23:48:27 2017 Return-Path: Delivered-To: freebsd-wireless@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id D0430DC8B71 for ; Sat, 19 Aug 2017 23:48:27 +0000 (UTC) (envelope-from khanzf@gmail.com) Received: from mail-pg0-x231.google.com (mail-pg0-x231.google.com [IPv6:2607:f8b0:400e:c05::231]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id A3F8F6A30A for ; Sat, 19 Aug 2017 23:48:27 +0000 (UTC) (envelope-from khanzf@gmail.com) Received: by mail-pg0-x231.google.com with SMTP id u191so6827074pgc.2 for ; Sat, 19 Aug 2017 16:48:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=5i6P2vAJtAyBJRDo/GO7AKjNi6D0ufxBBthWKV+7fSs=; b=pLtep+uoEogxoN+UvNJqGQv9mxaai3wjRXeYvTtIH78rBqWaSkPyyNn884jY4+Rktt 7hHI1LQLvmVK+48Dg3+aoUhHmBmjb72Z8PZYOUAikamaKA/dTR3CadrtfcCDK2Hh4SYC 1pjBW1j/UtdNqIvtmoEPiddCC6PXCBVQKj1aLvtP98q0Kn54IgjlAtWAilO2eAw8J37v eV/hNxq6gd/iBQKqGq/VbMnvYJE1tTUW0eISr+xlcwnUFUtlqac/SJbo8l26TFhReq67 Q3dK2zu5xd+KL7vjdC0mpFqbckgLMhIuhglm4BKpGv385SOFwpPunCweI4Y523/gaOH1 DFsg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=5i6P2vAJtAyBJRDo/GO7AKjNi6D0ufxBBthWKV+7fSs=; b=mPlptoE5bfg5QRSjg3grCHHo2Ufy5hbUI7RxEWlZ4jHL72DFVFHgu5lenLlptIr5TO iUB2zy/Yr2AKpvTtvrSI05qJEiKofbZCB23Xh5JvFyDjLlf5I2RU828Zlq+YzToaAOgX 2PheDdQ+PcFptGsF1Xjy3oDzG+8gX+BlwAWBc8c6JdmpFbCGUpl4ACvkBACFMCQ/qQHY Q0qG8vTwFbbxxYoPD4VunpGeGcQQxF+bAI1VaUA9GJTiL+WGHxyEl3kvHZr4pb3EBONm 5JwcyQoxfSMsYbCaREG7+3kn7iHkBs+FBgyoCtzGq84ncspDkgbOKLh04Pt7z75tSXNq MgzA== X-Gm-Message-State: AHYfb5ho5Xe10+pgpCaJMMvcdHR+NMXIF7rNRsxyy5cM4g2+shar0NPe F7XDa0uMv0ri8Gv6vjW3quKeCNXatmpQ650= X-Received: by 10.84.128.69 with SMTP id 63mr14206229pla.54.1503186507055; Sat, 19 Aug 2017 16:48:27 -0700 (PDT) MIME-Version: 1.0 Received: by 10.100.183.208 with HTTP; Sat, 19 Aug 2017 16:48:06 -0700 (PDT) From: Farhan Khan Date: Sat, 19 Aug 2017 19:48:06 -0400 Message-ID: Subject: ieee80211_waitfor_parent hangs forever To: freebsd-wireless@freebsd.org Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.23 X-BeenThere: freebsd-wireless@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Discussions of 802.11 stack, tools device driver development." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 19 Aug 2017 23:48:27 -0000 Hi all, I traced back where my driver-in-development hangs when I issue "ifconfig wlan0 up", and it hangs on ieee80211_waitfor_parent(), specifically: ieee80211_draintask(ic, &ic->ic_parent_task); Reference: http://src.illumos.org/source/xref/freebsd-head/sys/net80211/ieee80211_proto.c#1406 I am not familiar with the source just yet, What does this function do? And, what is ic_parent_task? It appears that Andriy reported this same issue here: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=208860 but I did not see a resolution. Thanks! -- Farhan Khan PGP Fingerprint: 782F 342B 5B08 0D2F F4E8 82C3 FFA1 CAE1 6536 51CA