From patchwork Tue Jan 3 16:56:43 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Miquel Raynal X-Patchwork-Id: 13087721 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BC326C3DA7D for ; Tue, 3 Jan 2023 16:57:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238289AbjACQ5c (ORCPT ); Tue, 3 Jan 2023 11:57:32 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39354 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238261AbjACQ5V (ORCPT ); Tue, 3 Jan 2023 11:57:21 -0500 Received: from relay1-d.mail.gandi.net (relay1-d.mail.gandi.net [217.70.183.193]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 22EDC12D03; Tue, 3 Jan 2023 08:57:10 -0800 (PST) Received: (Authenticated sender: miquel.raynal@bootlin.com) by mail.gandi.net (Postfix) with ESMTPSA id BCECC24000A; Tue, 3 Jan 2023 16:57:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1672765028; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=NzhYgVQZvSMHh7m8wUzHuREsO0SDTX7umYVrAfbAhf8=; b=HyOXK2G76Cis/FVSkEAL7DV0v0TradRuffO52BeRx/9/siZwhhlNiy5sT847UfrJ59S940 Qn0lozn4WF1Td9pTGkkNnxl/t4/YrjlalupPok5lfmAMBz6ByK6/JFmIsZ2JIo3/jNCSpX dS4YXqXYDMt+gtxos7CawtU0O5EABAci3JuwTBEeBcE5vakBlixuo8PE34pLpjW8l0UI4e IMf73CVoFoxnEjK/Uq42O7d2yn6M8ISyDN7UN9FKA2tM69Y/nBPn1u8B4zQhxWnDdriFdk /AygIRyWUIqc5ONujd+xLCjWcMcaxlpLBEjrwf9+7Ta04e9bDLDaVPUJlMxUZA== From: Miquel Raynal To: Alexander Aring , Stefan Schmidt , linux-wpan@vger.kernel.org Cc: "David S. Miller" , Jakub Kicinski , Paolo Abeni , Eric Dumazet , netdev@vger.kernel.org, David Girault , Romuald Despres , Frederic Blain , Nicolas Schodet , Guilhem Imberton , Thomas Petazzoni , Miquel Raynal , Alexander Aring Subject: [PATCH wpan-next v3 5/6] mac802154: Add MLME Tx locked helpers Date: Tue, 3 Jan 2023 17:56:43 +0100 Message-Id: <20230103165644.432209-6-miquel.raynal@bootlin.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230103165644.432209-1-miquel.raynal@bootlin.com> References: <20230103165644.432209-1-miquel.raynal@bootlin.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wpan@vger.kernel.org These have the exact same behavior as before, except they expect the rtnl to be already taken (and will complain otherwise). This allows performing MLME transmissions from different contexts. Signed-off-by: Miquel Raynal Acked-by: Alexander Aring --- net/mac802154/ieee802154_i.h | 6 ++++++ net/mac802154/tx.c | 42 +++++++++++++++++++++++++----------- 2 files changed, 35 insertions(+), 13 deletions(-) diff --git a/net/mac802154/ieee802154_i.h b/net/mac802154/ieee802154_i.h index 509e0172fe82..aeadee543a9c 100644 --- a/net/mac802154/ieee802154_i.h +++ b/net/mac802154/ieee802154_i.h @@ -141,10 +141,16 @@ int ieee802154_mlme_op_pre(struct ieee802154_local *local); int ieee802154_mlme_tx(struct ieee802154_local *local, struct ieee802154_sub_if_data *sdata, struct sk_buff *skb); +int ieee802154_mlme_tx_locked(struct ieee802154_local *local, + struct ieee802154_sub_if_data *sdata, + struct sk_buff *skb); void ieee802154_mlme_op_post(struct ieee802154_local *local); int ieee802154_mlme_tx_one(struct ieee802154_local *local, struct ieee802154_sub_if_data *sdata, struct sk_buff *skb); +int ieee802154_mlme_tx_one_locked(struct ieee802154_local *local, + struct ieee802154_sub_if_data *sdata, + struct sk_buff *skb); netdev_tx_t ieee802154_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev); netdev_tx_t diff --git a/net/mac802154/tx.c b/net/mac802154/tx.c index 9d8d43cf1e64..2a6f1ed763c9 100644 --- a/net/mac802154/tx.c +++ b/net/mac802154/tx.c @@ -137,34 +137,37 @@ int ieee802154_mlme_op_pre(struct ieee802154_local *local) return ieee802154_sync_and_hold_queue(local); } -int ieee802154_mlme_tx(struct ieee802154_local *local, - struct ieee802154_sub_if_data *sdata, - struct sk_buff *skb) +int ieee802154_mlme_tx_locked(struct ieee802154_local *local, + struct ieee802154_sub_if_data *sdata, + struct sk_buff *skb) { - int ret; - /* Avoid possible calls to ->ndo_stop() when we asynchronously perform * MLME transmissions. */ - rtnl_lock(); + ASSERT_RTNL(); /* Ensure the device was not stopped, otherwise error out */ - if (!local->open_count) { - rtnl_unlock(); + if (!local->open_count) return -ENETDOWN; - } /* Warn if the ieee802154 core thinks MLME frames can be sent while the * net interface expects this cannot happen. */ - if (WARN_ON_ONCE(!netif_running(sdata->dev))) { - rtnl_unlock(); + if (WARN_ON_ONCE(!netif_running(sdata->dev))) return -ENETDOWN; - } ieee802154_tx(local, skb); - ret = ieee802154_sync_queue(local); + return ieee802154_sync_queue(local); +} +int ieee802154_mlme_tx(struct ieee802154_local *local, + struct ieee802154_sub_if_data *sdata, + struct sk_buff *skb) +{ + int ret; + + rtnl_lock(); + ret = ieee802154_mlme_tx_locked(local, sdata, skb); rtnl_unlock(); return ret; @@ -188,6 +191,19 @@ int ieee802154_mlme_tx_one(struct ieee802154_local *local, return ret; } +int ieee802154_mlme_tx_one_locked(struct ieee802154_local *local, + struct ieee802154_sub_if_data *sdata, + struct sk_buff *skb) +{ + int ret; + + ieee802154_mlme_op_pre(local); + ret = ieee802154_mlme_tx_locked(local, sdata, skb); + ieee802154_mlme_op_post(local); + + return ret; +} + static bool ieee802154_queue_is_stopped(struct ieee802154_local *local) { return test_bit(WPAN_PHY_FLAG_STATE_QUEUE_STOPPED, &local->phy->flags);