From patchwork Thu May 12 14:33:12 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Miquel Raynal X-Patchwork-Id: 12847792 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 913CFC433F5 for ; Thu, 12 May 2022 14:33:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1355353AbiELOdy (ORCPT ); Thu, 12 May 2022 10:33:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54196 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1355352AbiELOdr (ORCPT ); Thu, 12 May 2022 10:33:47 -0400 Received: from relay9-d.mail.gandi.net (relay9-d.mail.gandi.net [IPv6:2001:4b98:dc4:8::229]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5C4B925E782; Thu, 12 May 2022 07:33:32 -0700 (PDT) Received: (Authenticated sender: miquel.raynal@bootlin.com) by mail.gandi.net (Postfix) with ESMTPSA id 68A03FF80B; Thu, 12 May 2022 14:33:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1652366011; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=e94S7M6FmCgpmql892vEUBnUE0cfzYvX74OoUdY9rRc=; b=KpfSYB6pkZYwAUS1STTllJjW34c0ENphPyEQRiyzy3mzZQwXPCE1rfu6JPkwO5vhZSUiEe fRrvramxeR0SCRJkHAcvQs4giiFZN5+TJdnhprfM/g1IqbFOB9xi+ogAZor6o4Ih7o5qNE hmO/8/hCD4Lk3gTSL0Blo7ViTgRKQX3+WUPusbnuAdMCwT0Kg+lGobGmc2lUmTrylu10wp JbETRdY+iCWVsnMObLv6rAFktcyhTPKiF1t0ZDSfE4kyDfD1johhCU6UDVXXGzr1LgtQ37 Nszbbyr29ubGkfrQLEMzvqyRRlhUy6szZpaizSLS1sLPSk3VUt/EY+nhoaLN1g== From: Miquel Raynal To: Alexander Aring , Stefan Schmidt , linux-wpan@vger.kernel.org Cc: "David S. Miller" , Jakub Kicinski , Paolo Abeni , netdev@vger.kernel.org, David Girault , Romuald Despres , Frederic Blain , Nicolas Schodet , Thomas Petazzoni , Miquel Raynal Subject: [PATCH wpan-next v2 09/11] net: mac802154: Introduce a synchronous API for MLME commands Date: Thu, 12 May 2022 16:33:12 +0200 Message-Id: <20220512143314.235604-10-miquel.raynal@bootlin.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20220512143314.235604-1-miquel.raynal@bootlin.com> References: <20220512143314.235604-1-miquel.raynal@bootlin.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wpan@vger.kernel.org This is the slow path, we need to wait for each command to be processed before continuing so let's introduce an helper which does the transmission and blocks until it gets notified of its asynchronous completion. This helper is going to be used when introducing scan support. Signed-off-by: Miquel Raynal --- net/mac802154/ieee802154_i.h | 1 + net/mac802154/tx.c | 25 +++++++++++++++++++++++++ 2 files changed, 26 insertions(+) diff --git a/net/mac802154/ieee802154_i.h b/net/mac802154/ieee802154_i.h index a057827fc48a..f8b374810a11 100644 --- a/net/mac802154/ieee802154_i.h +++ b/net/mac802154/ieee802154_i.h @@ -125,6 +125,7 @@ extern struct ieee802154_mlme_ops mac802154_mlme_wpan; void ieee802154_rx(struct ieee802154_local *local, struct sk_buff *skb); void ieee802154_xmit_sync_worker(struct work_struct *work); int ieee802154_sync_and_hold_queue(struct ieee802154_local *local); +int ieee802154_mlme_tx(struct ieee802154_local *local, 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 38f74b8b6740..ec8d872143ee 100644 --- a/net/mac802154/tx.c +++ b/net/mac802154/tx.c @@ -128,6 +128,31 @@ int ieee802154_sync_and_hold_queue(struct ieee802154_local *local) return ieee802154_sync_queue(local); } +int ieee802154_mlme_tx(struct ieee802154_local *local, struct sk_buff *skb) +{ + int ret; + + /* Avoid possible calls to ->ndo_stop() when we asynchronously perform + * MLME transmissions. + */ + rtnl_lock(); + + /* Ensure the device was not stopped, otherwise error out */ + if (!local->open_count) + return -EBUSY; + + ieee802154_sync_and_hold_queue(local); + + ieee802154_tx(local, skb); + ret = ieee802154_sync_queue(local); + + ieee802154_release_queue(local); + + rtnl_unlock(); + + return ret; +} + static netdev_tx_t ieee802154_hot_tx(struct ieee802154_local *local, struct sk_buff *skb) {