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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 AD984C432C3 for ; Sat, 16 Nov 2019 16:14:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8507F214DE for ; Sat, 16 Nov 2019 16:14:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573920888; bh=vS6NaVgZQJk4ZRO2M57wzdi0pOreZwpgBQncFbvkgIk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=CUCDZqRdWcVTYq31fFOwK+vZzukTtczIXQWGmy46ZpKxCgKtD6xoX1ge4iHohG8dj Kz5ZmovxVG89qzDmnPQpTDPDrjnWKP8lQmbS1Dyo9YXC0NZ0r1cemTZkZ5HEt14G9g bQl904i6sWg3EBouVEvWOH4HQJFkUlIiSyfEK3oU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731924AbfKPQOn (ORCPT ); Sat, 16 Nov 2019 11:14:43 -0500 Received: from mail.kernel.org ([198.145.29.99]:54428 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729757AbfKPPrl (ORCPT ); Sat, 16 Nov 2019 10:47:41 -0500 Received: from sasha-vm.mshome.net (unknown [50.234.116.4]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 4EAB520740; Sat, 16 Nov 2019 15:47:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573919260; bh=vS6NaVgZQJk4ZRO2M57wzdi0pOreZwpgBQncFbvkgIk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RE1JmX6+raZ1CeI1r81xFV+HEM8nrsQQT2drO1z3hNRIwWYfqQVs9LpRnaXHzfldn ameBPvlRSqYxf7To3VFjwff6bfEgK65UdmfNIjMClVWsRPlaDn6Psa7dpqCE2KPsDD F4JGpek/lLdsRhjlQZSbJ570Qf3nd9sITNkfi0hE= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Ali MJ Al-Nasrawy , Kalle Valo , Sasha Levin , linux-wireless@vger.kernel.org, brcm80211-dev-list.pdl@broadcom.com, brcm80211-dev-list@cypress.com, netdev@vger.kernel.org Subject: [PATCH AUTOSEL 4.14 010/150] brcmsmac: AP mode: update beacon when TIM changes Date: Sat, 16 Nov 2019 10:45:08 -0500 Message-Id: <20191116154729.9573-10-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191116154729.9573-1-sashal@kernel.org> References: <20191116154729.9573-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Ali MJ Al-Nasrawy [ Upstream commit 2258ee58baa554609a3cc3996276e4276f537b6d ] Beacons are not updated to reflect TIM changes. This is not compliant with power-saving client stations as the beacons do not have valid TIM and can cause the network to stall at random occasions and to have highly variable latencies. Fix it by updating beacon templates on mac80211 set_tim callback. Addresses an issue described in: https://marc.info/?i=20180911163534.21312d08%20()%20manjaro Signed-off-by: Ali MJ Al-Nasrawy Signed-off-by: Kalle Valo Signed-off-by: Sasha Levin --- .../broadcom/brcm80211/brcmsmac/mac80211_if.c | 26 +++++++++++++++++++ .../broadcom/brcm80211/brcmsmac/main.h | 1 + 2 files changed, 27 insertions(+) diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/mac80211_if.c b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/mac80211_if.c index ddfdfe177e245..257968fb3111f 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/mac80211_if.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/mac80211_if.c @@ -502,6 +502,7 @@ brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) } spin_lock_bh(&wl->lock); + wl->wlc->vif = vif; wl->mute_tx = false; brcms_c_mute(wl->wlc, false); if (vif->type == NL80211_IFTYPE_STATION) @@ -519,6 +520,11 @@ brcms_ops_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) static void brcms_ops_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) { + struct brcms_info *wl = hw->priv; + + spin_lock_bh(&wl->lock); + wl->wlc->vif = NULL; + spin_unlock_bh(&wl->lock); } static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed) @@ -937,6 +943,25 @@ static void brcms_ops_set_tsf(struct ieee80211_hw *hw, spin_unlock_bh(&wl->lock); } +static int brcms_ops_beacon_set_tim(struct ieee80211_hw *hw, + struct ieee80211_sta *sta, bool set) +{ + struct brcms_info *wl = hw->priv; + struct sk_buff *beacon = NULL; + u16 tim_offset = 0; + + spin_lock_bh(&wl->lock); + if (wl->wlc->vif) + beacon = ieee80211_beacon_get_tim(hw, wl->wlc->vif, + &tim_offset, NULL); + if (beacon) + brcms_c_set_new_beacon(wl->wlc, beacon, tim_offset, + wl->wlc->vif->bss_conf.dtim_period); + spin_unlock_bh(&wl->lock); + + return 0; +} + static const struct ieee80211_ops brcms_ops = { .tx = brcms_ops_tx, .start = brcms_ops_start, @@ -955,6 +980,7 @@ static const struct ieee80211_ops brcms_ops = { .flush = brcms_ops_flush, .get_tsf = brcms_ops_get_tsf, .set_tsf = brcms_ops_set_tsf, + .set_tim = brcms_ops_beacon_set_tim, }; void brcms_dpc(unsigned long data) diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/main.h b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/main.h index c4d135cff04ad..9f76b880814e8 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/main.h +++ b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/main.h @@ -563,6 +563,7 @@ struct brcms_c_info { struct wiphy *wiphy; struct scb pri_scb; + struct ieee80211_vif *vif; struct sk_buff *beacon; u16 beacon_tim_offset; -- 2.20.1