From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6F919C43381 for ; Thu, 28 Feb 2019 08:03:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 426812171F for ; Thu, 28 Feb 2019 08:03:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731184AbfB1IDl (ORCPT ); Thu, 28 Feb 2019 03:03:41 -0500 Received: from mx1.redhat.com ([209.132.183.28]:16052 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730969AbfB1IDl (ORCPT ); Thu, 28 Feb 2019 03:03:41 -0500 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 04B59C0ADB58; Thu, 28 Feb 2019 08:03:41 +0000 (UTC) Received: from localhost (unknown [10.40.205.30]) by smtp.corp.redhat.com (Postfix) with ESMTP id 6186D57981; Thu, 28 Feb 2019 08:03:34 +0000 (UTC) From: Stanislaw Gruszka To: Felix Fietkau Cc: linux-wireless@vger.kernel.org, Lorenzo Bianconi Subject: [RFC 00/12] mt76x02: AP support for with PS Date: Thu, 28 Feb 2019 09:03:21 +0100 Message-Id: <1551341013-24519-1-git-send-email-sgruszka@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.31]); Thu, 28 Feb 2019 08:03:41 +0000 (UTC) Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org On USB we do not have available PSD queue. Using standard AC queues is unreliable for sending PS buffered frames, stations can go sleep again before frames are sent. Only reliable way I could find to sent broadcast PS buffered frames is put them into beacon data registers, then frames are sent just after proper beacon. HW do the work when we encrypt the frames in software. I tested functionality used arping to iwlwifi station that do aggressive PS, it works like this: # arping -c 1 -I wlan0 192.168.9.110 ARPING 192.168.9.110 from 192.168.9.1 wlan0 Unicast reply from 192.168.9.110 [4C:34:88:5E:76:D5] 324.885ms Sent 1 probes (1 broadcast(s)) Otherwise arping fails: # arping -c 1 -I wlan0 192.168.9.110 ARPING 192.168.9.110 from 192.168.1.148 wlan0 Sent 1 probes (1 broadcast(s)) Received 0 response(s) I'm not sure how to test mt76_release_buffered_frames functionality. Also I have not tested on MMIO hardware, but for this only code movement was done so things should not break. Stanislaw Gruszka (12): mt76x02: introduce mt76x02_beacon.c mt76x02: add hrtimer for pre TBTT for USB mt76x02: introduce beacon_ops mt76x02u: implement beacon_ops mt76x02: generalize some mmio beaconing functions mt76x02u: add sta_ps mt76x02: fix hdr pointer in write txwi for USB mt76x02: disable HW encryption for group frames mt76x02u: implement pre TBTT work for USB mt76x02u: add mt76_release_buffered_frames mt76x02: enable AP mode for USB mt76x02: remove set_tim drivers/net/wireless/mediatek/mt76/Makefile | 2 +- .../net/wireless/mediatek/mt76/mt76x0/init.c | 1 - .../net/wireless/mediatek/mt76/mt76x0/main.c | 8 +- .../net/wireless/mediatek/mt76/mt76x0/pci.c | 10 +- .../net/wireless/mediatek/mt76/mt76x0/usb.c | 9 +- drivers/net/wireless/mediatek/mt76/mt76x02.h | 22 ++ .../wireless/mediatek/mt76/mt76x02_beacon.c | 308 ++++++++++++++++++ .../net/wireless/mediatek/mt76/mt76x02_mac.c | 138 -------- .../net/wireless/mediatek/mt76/mt76x02_mmio.c | 131 +++----- .../net/wireless/mediatek/mt76/mt76x02_regs.h | 5 +- .../net/wireless/mediatek/mt76/mt76x02_usb.h | 2 + .../wireless/mediatek/mt76/mt76x02_usb_core.c | 156 ++++++++- .../net/wireless/mediatek/mt76/mt76x02_util.c | 77 +---- .../wireless/mediatek/mt76/mt76x2/pci_init.c | 2 +- .../wireless/mediatek/mt76/mt76x2/pci_main.c | 7 - .../net/wireless/mediatek/mt76/mt76x2/usb.c | 1 + .../wireless/mediatek/mt76/mt76x2/usb_init.c | 2 +- .../wireless/mediatek/mt76/mt76x2/usb_main.c | 1 + drivers/net/wireless/mediatek/mt76/usb.c | 13 +- 19 files changed, 568 insertions(+), 327 deletions(-) create mode 100644 drivers/net/wireless/mediatek/mt76/mt76x02_beacon.c -- 2.20.1