From owner-freebsd-wireless@freebsd.org Wed May 20 07:40:45 2020 Return-Path: Delivered-To: freebsd-wireless@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 7DBA22C92E7 for ; Wed, 20 May 2020 07:40:45 +0000 (UTC) (envelope-from agapon@gmail.com) Received: from mailman.nyi.freebsd.org (unknown [127.0.1.3]) by mx1.freebsd.org (Postfix) with ESMTP id 49Rl6P1SlGz3ZYr for ; Wed, 20 May 2020 07:40:45 +0000 (UTC) (envelope-from agapon@gmail.com) Received: by mailman.nyi.freebsd.org (Postfix) id 3034F2C97A6; Wed, 20 May 2020 07:40:45 +0000 (UTC) Delivered-To: wireless@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 2FF722C9719 for ; Wed, 20 May 2020 07:40:45 +0000 (UTC) (envelope-from agapon@gmail.com) Received: from mail-wr1-f65.google.com (mail-wr1-f65.google.com [209.85.221.65]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 49Rl6N0D5gz3ZKf for ; Wed, 20 May 2020 07:40:43 +0000 (UTC) (envelope-from agapon@gmail.com) Received: by mail-wr1-f65.google.com with SMTP id i15so2036669wrx.10 for ; Wed, 20 May 2020 00:40:43 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:openpgp:autocrypt :message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=MFoiAr+MvDVgz2Hq/CFcrEQNSaW/nFgG0iguFQ00iw4=; b=o8uMf444FtdKGQpzzKJVkppnPKRD7hbH+xCJ5ANfOIuMuwJ3VGj1fcqUegUW3HhcxP HAJdvAYOrHtEy6NlzrCzRUAzOJIcfejuJ0kiPQRu7KXfmcGwce3uuyyaEB0eUfAEvpZK FzF1RJxaRHf9uOKK7H9cKZI+k8aiC8A1ioKaFbt522uXRg2raxhNoNJnWvZBGMcS0qeU 3qro0CgC0L1aYsOYrCkBlO+N/2rCUt4xvOm+32C5R9dVeDyeilLnNBNxSlbU6lKoGgVZ od3m//qtHXGjUFL/AQIRWhvD8VDje1cuh2cwFCW86a81ty9M3pQqLdABmBer3rV7jHWS egzw== X-Gm-Message-State: AOAM530F4ymxBDIS9HvmktSGK6XwJR3CGtAYy3g6/QgbSi+LM1BaZ9Oq 68qbtA43s96olrRkc9/NjmyG4Ibt X-Google-Smtp-Source: ABdhPJx3zXdJ2UVBEuFDAEPhdzrAv3/I/mEll3p/hHCVU48jttSaBO5jqO8pZznxKaXMLLFpZSOxjQ== X-Received: by 2002:a5d:5445:: with SMTP id w5mr2819831wrv.422.1589960442269; Wed, 20 May 2020 00:40:42 -0700 (PDT) Received: from [192.168.0.88] (east.meadow.volia.net. [93.72.151.96]) by smtp.googlemail.com with ESMTPSA id v24sm2278675wmh.45.2020.05.20.00.40.40 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 20 May 2020 00:40:41 -0700 (PDT) Subject: Re: iwm rfkill To: Adrian Chadd Cc: "freebsd-wireless@freebsd.org" References: <15021eed-2d82-5391-0edc-8d328e3ba31d@FreeBSD.org> <9d55db0d-fe7a-2695-ac3e-6668eab43622@FreeBSD.org> From: Andriy Gapon Openpgp: preference=signencrypt Autocrypt: addr=avg@FreeBSD.org; prefer-encrypt=mutual; keydata= mQINBFm4LIgBEADNB/3lT7f15UKeQ52xCFQx/GqHkSxEdVyLFZTmY3KyNPQGBtyvVyBfprJ7 mAeXZWfhat6cKNRAGZcL5EmewdQuUfQfBdYmKjbw3a9GFDsDNuhDA2QwFt8BmkiVMRYyvI7l N0eVzszWCUgdc3qqM6qqcgBaqsVmJluwpvwp4ZBXmch5BgDDDb1MPO8AZ2QZfIQmplkj8Y6Z AiNMknkmgaekIINSJX8IzRzKD5WwMsin70psE8dpL/iBsA2cpJGzWMObVTtCxeDKlBCNqM1i gTXta1ukdUT7JgLEFZk9ceYQQMJJtUwzWu1UHfZn0Fs29HTqawfWPSZVbulbrnu5q55R4PlQ /xURkWQUTyDpqUvb4JK371zhepXiXDwrrpnyyZABm3SFLkk2bHlheeKU6Yql4pcmSVym1AS4 dV8y0oHAfdlSCF6tpOPf2+K9nW1CFA8b/tw4oJBTtfZ1kxXOMdyZU5fiG7xb1qDgpQKgHUX8 7Rd2T1UVLVeuhYlXNw2F+a2ucY+cMoqz3LtpksUiBppJhw099gEXehcN2JbUZ2TueJdt1FdS ztnZmsHUXLxrRBtGwqnFL7GSd6snpGIKuuL305iaOGODbb9c7ne1JqBbkw1wh8ci6vvwGlzx rexzimRaBzJxlkjNfMx8WpCvYebGMydNoeEtkWldtjTNVsUAtQARAQABtB5BbmRyaXkgR2Fw b24gPGF2Z0BGcmVlQlNELm9yZz6JAlQEEwEIAD4WIQS+LEO7ngQnXA4Bjr538m7TUc1yjwUC WbgsiAIbIwUJBaOagAULCQgHAgYVCAkKCwIEFgIDAQIeAQIXgAAKCRB38m7TUc1yj+JAEACV l9AK/nOWAt/9cufV2fRj0hdOqB1aCshtSrwHk/exXsDa4/FkmegxXQGY+3GWX3deIyesbVRL rYdtdK0dqJyT1SBqXK1h3/at9rxr9GQA6KWOxTjUFURsU7ok/6SIlm8uLRPNKO+yq0GDjgaO LzN+xykuBA0FlhQAXJnpZLcVfPJdWv7sSHGedL5ln8P8rxR+XnmsA5TUaaPcbhTB+mG+iKFj GghASDSfGqLWFPBlX/fpXikBDZ1gvOr8nyMY9nXhgfXpq3B6QCRYKPy58ChrZ5weeJZ29b7/ QdEO8NFNWHjSD9meiLdWQaqo9Y7uUxN3wySc/YUZxtS0bhAd8zJdNPsJYG8sXgKjeBQMVGuT eCAJFEYJqbwWvIXMfVWop4+O4xB+z2YE3jAbG/9tB/GSnQdVSj3G8MS80iLS58frnt+RSEw/ psahrfh0dh6SFHttE049xYiC+cM8J27Aaf0i9RflyITq57NuJm+AHJoU9SQUkIF0nc6lfA+o JRiyRlHZHKoRQkIg4aiKaZSWjQYRl5Txl0IZUP1dSWMX4s3XTMurC/pnja45dge/4ESOtJ9R 8XuIWg45Oq6MeIWdjKddGhRj3OohsltKgkEU3eLKYtB6qRTQypHHUawCXz88uYt5e3w4V16H lCpSTZV/EVHnNe45FVBlvK7k7HFfDDkryLkCDQRZuCyIARAAlq0slcsVboY/+IUJdcbEiJRW be9HKVz4SUchq0z9MZPX/0dcnvz/gkyYA+OuM78dNS7Mbby5dTvOqfpLJfCuhaNYOhlE0wY+ 1T6Tf1f4c/uA3U/YiadukQ3+6TJuYGAdRZD5EqYFIkreARTVWg87N9g0fT9BEqLw9lJtEGDY EWUE7L++B8o4uu3LQFEYxcrb4K/WKmgtmFcm77s0IKDrfcX4doV92QTIpLiRxcOmCC/OCYuO jB1oaaqXQzZrCutXRK0L5XN1Y1PYjIrEzHMIXmCDlLYnpFkK+itlXwlE2ZQxkfMruCWdQXye syl2fynAe8hvp7Mms9qU2r2K9EcJiR5N1t1C2/kTKNUhcRv7Yd/vwusK7BqJbhlng5ZgRx0m WxdntU/JLEntz3QBsBsWM9Y9wf2V4tLv6/DuDBta781RsCB/UrU2zNuOEkSixlUiHxw1dccI 6CVlaWkkJBxmHX22GdDFrcjvwMNIbbyfQLuBq6IOh8nvu9vuItup7qemDG3Ms6TVwA7BD3j+ 3fGprtyW8Fd/RR2bW2+LWkMrqHffAr6Y6V3h5kd2G9Q8ZWpEJk+LG6Mk3fhZhmCnHhDu6CwN MeUvxXDVO+fqc3JjFm5OxhmfVeJKrbCEUJyM8ESWLoNHLqjywdZga4Q7P12g8DUQ1mRxYg/L HgZY3zfKOqcAEQEAAYkCPAQYAQgAJhYhBL4sQ7ueBCdcDgGOvnfybtNRzXKPBQJZuCyIAhsM BQkFo5qAAAoJEHfybtNRzXKPBVwQAKfFy9P7N3OsLDMB56A4Kf+ZT+d5cIx0Yiaf4n6w7m3i ImHHHk9FIetI4Xe54a2IXh4Bq5UkAGY0667eIs+Z1Ea6I2i27Sdo7DxGwq09Qnm/Y65ADvXs 3aBvokCcm7FsM1wky395m8xUos1681oV5oxgqeRI8/76qy0hD9WR65UW+HQgZRIcIjSel9vR XDaD2HLGPTTGr7u4v00UeTMs6qvPsa2PJagogrKY8RXdFtXvweQFz78NbXhluwix2Tb9ETPk LIpDrtzV73CaE2aqBG/KrboXT2C67BgFtnk7T7Y7iKq4/XvEdDWscz2wws91BOXuMMd4c/c4 OmGW9m3RBLufFrOag1q5yUS9QbFfyqL6dftJP3Zq/xe+mr7sbWbhPVCQFrH3r26mpmy841ym dwQnNcsbIGiBASBSKksOvIDYKa2Wy8htPmWFTEOPRpFXdGQ27awcjjnB42nngyCK5ukZDHi6 w0qK5DNQQCkiweevCIC6wc3p67jl1EMFY5+z+zdTPb3h7LeVnGqW0qBQl99vVFgzLxchKcl0 R/paSFgwqXCZhAKMuUHncJuynDOP7z5LirUeFI8qsBAJi1rXpQoLJTVcW72swZ42IdPiboqx NbTMiNOiE36GqMcTPfKylCbF45JNX4nF9ElM0E+Y8gi4cizJYBRr2FBJgay0b9Cp Message-ID: Date: Wed, 20 May 2020 10:40:39 +0300 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:60.0) Gecko/20100101 Firefox/60.0 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 49Rl6N0D5gz3ZKf X-Spamd-Bar: / Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of agapon@gmail.com designates 209.85.221.65 as permitted sender) smtp.mailfrom=agapon@gmail.com X-Spamd-Result: default: False [-0.34 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; R_SPF_ALLOW(-0.20)[+ip4:209.85.128.0/17:c]; RCVD_COUNT_THREE(0.00)[3]; TO_DN_ALL(0.00)[]; NEURAL_HAM_SHORT(-0.21)[-0.213]; RCPT_COUNT_TWO(0.00)[2]; FREEMAIL_TO(0.00)[gmail.com]; FORGED_SENDER(0.30)[avg@FreeBSD.org,agapon@gmail.com]; RECEIVED_SPAMHAUS_PBL(0.00)[93.72.151.96:received]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:209.85.128.0/17, country:US]; MID_RHS_MATCH_FROM(0.00)[]; FROM_NEQ_ENVFROM(0.00)[avg@FreeBSD.org,agapon@gmail.com]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.12)[-0.123]; FROM_HAS_DN(0.00)[]; TAGGED_RCPT(0.00)[]; R_DKIM_NA(0.00)[]; PREVIOUSLY_DELIVERED(0.00)[wireless@freebsd.org]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[FreeBSD.org]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[209.85.221.65:from]; RWL_MAILSPIKE_POSSIBLE(0.00)[209.85.221.65:from]; RCVD_TLS_ALL(0.00)[] X-BeenThere: freebsd-wireless@freebsd.org X-Mailman-Version: 2.1.33 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: Wed, 20 May 2020 07:40:45 -0000 On 20/05/2020 02:11, Adrian Chadd wrote: > On Tue, 19 May 2020 at 16:07, Andriy Gapon wrote: > > >>> >>> Adrian, thank you very much for your suggestion. >>> Being a complete noob in this area, this is my stab at it: >>> https://reviews.freebsd.org/D24923 >> >> Also, I see that there is some friction between how rfkill is handled at the >> driver / kernel level and how it gets (or doesn't get) known to userland. >> First, at least Intel wireless drivers use ieee80211_suspend_all / >> ieee80211_resume_all KPI when handling rfkill. Those calls end up clearing or >> setting IFF_DRV_RUNNING while userland mostly checks for IFF_UP. But that's not >> an issue actually -- I think that it's userland code that needs fixing. The >> issue is that the IFF_DRV_RUNNING changes become known to userland only by >> accident if at all. > > Ha! Ok. > >> >> Specifically, if we consider wpa_supplicant, it listens for notifications coming >> via PF_ROUTE socket such as RTM_IFINFO. So, wpa_supplicant depends on (a) a >> notification getting generated in the first place; (b) the notification >> conveying correct information about an interface's state. >> As far as I can tell, net80211 layer does not try to do either of the above. >> E.g., in the case of ieee80211_stop_locked there is an RTM_IFINFO notification >> because of a link status change, but that notification by the state change >> that's performed before IFF_DRV_RUNNING is cleared. >> In the case of ieee80211_start_locked the situation is even worse. >> >> I wonder if ieee80211 should explicitly use rt_ifmsg() to post right >> notifications at right times. >> FWIW, I already have a patch for that and it seems to work. > > Yes. :-) Let's get that in too. Thank you for the very quick feedback! https://reviews.freebsd.org/D24925 -- Andriy Gapon