From owner-freebsd-current@FreeBSD.ORG Fri Nov 1 16:30:59 2013 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id 8B0C5120 for ; Fri, 1 Nov 2013 16:30:59 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: from mail-qc0-x233.google.com (mail-qc0-x233.google.com [IPv6:2607:f8b0:400d:c01::233]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 4DABA2889 for ; Fri, 1 Nov 2013 16:30:59 +0000 (UTC) Received: by mail-qc0-f179.google.com with SMTP id k18so2586281qcv.38 for ; Fri, 01 Nov 2013 09:30:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=bE5B5AV/enkPE10LbDEF8rK1JuiIgSJz+tvgLOAHrqk=; b=r8wCK374InS/Mf88W9owxNyL+sbFLv91qr8QRd5MWOCilMZcEo+Nh580lDGa96x/OD aeWAYLK0VDTUh3VqQJrc/8DAqRWDKCw9Hil9SAPufF0dgcRbDB21ty+83+neMaiJiJgE 71zEcrQu4r4v5bcPjdAi7vnUKd9TTYCGOuw8W3jjvY6UfgFxgPll8zleRxdmqjHpJBhi ZFey2DrGOxLEP6l9OdCe/y23Hc4GCU3/OaS8U8Tsjmmf0UN6f5IUapVBd+9SFo8LoE54 UZPp/idJNK7FDZpIEWgkW7QDsQ9eY6ntyJ86IXPrLhp4tMXw3+2u+f1cBT2RT2Nlwdnl n5Lg== MIME-Version: 1.0 X-Received: by 10.224.51.131 with SMTP id d3mr5251645qag.0.1383323458408; Fri, 01 Nov 2013 09:30:58 -0700 (PDT) Sender: adrian.chadd@gmail.com Received: by 10.224.207.66 with HTTP; Fri, 1 Nov 2013 09:30:58 -0700 (PDT) In-Reply-To: References: <20131101153236.GA2721@La-Habana> Date: Fri, 1 Nov 2013 09:30:58 -0700 X-Google-Sender-Auth: 0lUrrp_r5P5u2JSA_YvZNO0sl9Y Message-ID: Subject: Re: dhclient: send_packet: No buffer space available From: Adrian Chadd To: hiren panchasara Content-Type: text/plain; charset=ISO-8859-1 Cc: Matthias Apitz , freebsd-current X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 Nov 2013 16:30:59 -0000 On 1 November 2013 08:45, hiren panchasara wrote: > On Fri, Nov 1, 2013 at 8:32 AM, Matthias Apitz wrote: >> >> >> Hello, >> >> Since I have updated my netbook to r255948 I see from time to time in >> the console the message: >> >> Nov 1 16:20:28 tiny-r255948 dhclient[696]: send_packet: No buffer space available > > Yes, this is a knownish issue which doesn't _seem_ to cause any other > side-effects but its getting annoying now. I also see a lot of them > lately. > > I do not think this has been tracked down yet. Well, the first thing to establish is whether it's occuring in net80211 or the driver. I _think_ it's a net80211 problem, where dhclient is sending a frame to an interface that isn't yet ready. It's yet another race condition that I must've uncovered when I made the switch to if_transmit() in net80211. Yes, I'd love it if someone looked into it for me. :) -adrian