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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 CD96AC636C9 for ; Sat, 17 Jul 2021 20:41:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AA00061103 for ; Sat, 17 Jul 2021 20:41:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235499AbhGQUoK (ORCPT ); Sat, 17 Jul 2021 16:44:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46072 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235304AbhGQUoK (ORCPT ); Sat, 17 Jul 2021 16:44:10 -0400 Received: from mail-wm1-x332.google.com (mail-wm1-x332.google.com [IPv6:2a00:1450:4864:20::332]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F2803C061764; Sat, 17 Jul 2021 13:41:12 -0700 (PDT) Received: by mail-wm1-x332.google.com with SMTP id m11-20020a05600c3b0bb0290228f19cb433so10284515wms.0; Sat, 17 Jul 2021 13:41:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ub1HsGiuNnybNJs5WdbxXtwzsH2TKD1etrBmG16trf8=; b=CiZLuaEdJVvFa3WM66L6CR/35+LZUZSrfCevHyRoEkFnH4KdzSFrXdeZME8n1yc+hV RWZOVc4gC05SyYNN2QbkyjWayfDHAs5wSEeoiq+GFrXEz/RvNyTqtSoLC92y5m77nmcA 7nxU2jrSov5688YJpZN82LlneC+NJZT59kD5dQs5mHMeV2abb2WGsPEm1cCAdhUzKqKA Tee1TBflos3ZLu5nZ4NBrYLHkxyAWtVUfJgqTSNmD3/EeDB3o6pCQoPaYs21udFGpqYF vshwB300xpelsyW+Cd3Ovusvt7YsE51YJd3HC71a8L1IaqncV/X0PUNr/nH3rxYBaiY/ U43w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ub1HsGiuNnybNJs5WdbxXtwzsH2TKD1etrBmG16trf8=; b=cSlShcee4xS7M/O7m/thg9WyfjOPsuogCfaMxxGpuRKhssBibNBBojoIQN7tUGoz0D s05POUaBmmYWqJzLiw3AMIn1P5Aq/FP6kpdmRfKQkZ9K2aFn3G7G+rlhM+A3lBgplTNt QCubH8HfOFWLFQu9GO0t9wgfmWWc3OUfGDhEtG3OWrKXaHGxZi1lbdWtByVCnGyptF4H QyZ3vRACAO9L6LRxV4nO8s12EKaxR7Ru2jJOZdvu9DrIRM1a5lOKNsUxHMqbzsrK6SrH vs36gQG7N+5XZSK7fztLtK4MCtgmrlq7RWjQvFYZCDcBq9iv5tGN+7jxFwZIZsqMNFV3 tDCA== X-Gm-Message-State: AOAM532Y33T4Ly657F2/hxSC5Emm1WxjbB//HbN+CKdz9n7d9r7J3lY2 kZTFKRAZcUrPmX4MuGNPhon/LheKydw= X-Google-Smtp-Source: ABdhPJwuLk7/VOAal/tp1Jo2xRjrL13P75si/BZkcu4Ws2qee0BmuGxZO349GBQxWxVvwWo1HMC66A== X-Received: by 2002:a05:600c:246:: with SMTP id 6mr21335374wmj.143.1626554471334; Sat, 17 Jul 2021 13:41:11 -0700 (PDT) Received: from localhost.localdomain (dynamic-2a01-0c22-7602-4e00-f22f-74ff-fe21-0725.c22.pool.telefonica.de. [2a01:c22:7602:4e00:f22f:74ff:fe21:725]) by smtp.googlemail.com with ESMTPSA id n7sm14078357wmq.37.2021.07.17.13.41.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 17 Jul 2021 13:41:10 -0700 (PDT) From: Martin Blumenstingl To: linux-wireless@vger.kernel.org Cc: tony0620emma@gmail.com, kvalo@codeaurora.org, johannes@sipsolutions.net, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Neo Jou , Jernej Skrabec , Martin Blumenstingl Subject: [PATCH RFC v1 1/7] mac80211: Add stations iterator where the iterator function may sleep Date: Sat, 17 Jul 2021 22:40:51 +0200 Message-Id: <20210717204057.67495-2-martin.blumenstingl@googlemail.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210717204057.67495-1-martin.blumenstingl@googlemail.com> References: <20210717204057.67495-1-martin.blumenstingl@googlemail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org ieee80211_iterate_active_interfaces() and ieee80211_iterate_active_interfaces_atomic() already exist, where the former allows the iterator function to sleep. Add ieee80211_iterate_stations() which is similar to ieee80211_iterate_stations_atomic() but allows the iterator to sleep. This is needed for adding SDIO support to the rtw88 driver. Some interators there are reading or writing registers. With the SDIO ops (sdio_readb, sdio_writeb and friends) this means that the iterator function may sleep. Signed-off-by: Martin Blumenstingl --- include/net/mac80211.h | 18 ++++++++++++++++++ net/mac80211/util.c | 13 +++++++++++++ 2 files changed, 31 insertions(+) diff --git a/include/net/mac80211.h b/include/net/mac80211.h index d8a1d09a2141..77de89690008 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -5575,6 +5575,24 @@ void ieee80211_iterate_active_interfaces_mtx(struct ieee80211_hw *hw, struct ieee80211_vif *vif), void *data); +/** + * ieee80211_iterate_stations_atomic - iterate stations + * + * This function iterates over all stations associated with a given + * hardware that are currently uploaded to the driver and calls the callback + * function for them. + * This function allows the iterator function to sleep, when the iterator + * function is atomic @ieee80211_iterate_stations_atomic can be used. + * + * @hw: the hardware struct of which the interfaces should be iterated over + * @iterator: the iterator function to call, cannot sleep + * @data: first argument of the iterator function + */ +void ieee80211_iterate_stations(struct ieee80211_hw *hw, + void (*iterator)(void *data, + struct ieee80211_sta *sta), + void *data); + /** * ieee80211_iterate_stations_atomic - iterate stations * diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 05e96212b104..c6984d0464f2 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -862,6 +862,19 @@ static void __iterate_stations(struct ieee80211_local *local, } } +void ieee80211_iterate_stations(struct ieee80211_hw *hw, + void (*iterator)(void *data, + struct ieee80211_sta *sta), + void *data) +{ + struct ieee80211_local *local = hw_to_local(hw); + + mutex_lock(&local->sta_mtx); + __iterate_stations(local, iterator, data); + mutex_unlock(&local->sta_mtx); +} +EXPORT_SYMBOL_GPL(ieee80211_iterate_stations); + void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw, void (*iterator)(void *data, struct ieee80211_sta *sta), -- 2.32.0