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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4A25CC4332F for ; Mon, 14 Nov 2022 12:49:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237351AbiKNMtZ (ORCPT ); Mon, 14 Nov 2022 07:49:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41520 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237349AbiKNMtY (ORCPT ); Mon, 14 Nov 2022 07:49:24 -0500 Received: from sin.source.kernel.org (sin.source.kernel.org [145.40.73.55]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6E21F2C8 for ; Mon, 14 Nov 2022 04:49:23 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sin.source.kernel.org (Postfix) with ESMTPS id D97A7CE1005 for ; Mon, 14 Nov 2022 12:49:21 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A342DC433C1; Mon, 14 Nov 2022 12:49:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1668430160; bh=NR9hBtNSoSsxO+5zi/Fn6pJ6tCTcXMeaRIV18WsZrzw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XnkZPZzpusCfFKc2wsRgahq0M7IK0DwSNT+xLjcrGpuASwiXT9dZMweqfvPZtYueH I1Cc79/pBug5BkrDUfQ0gYqKnNbOKe2QGqRfYBThC6Sq7Fqmv5yHQ3/tBklkacsABF mzx4NInfPpjnPLOdsnE2/k/007MezELiHPPt7MDw= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Sabrina Dubroca , Antoine Tenart , Leon Romanovsky , "David S. Miller" , Sasha Levin Subject: [PATCH 5.10 14/95] macsec: fix secy->n_rx_sc accounting Date: Mon, 14 Nov 2022 13:45:08 +0100 Message-Id: <20221114124443.101050630@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221114124442.530286937@linuxfoundation.org> References: <20221114124442.530286937@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Sabrina Dubroca [ Upstream commit 73a4b31c9d11f98ae3bc5286d5382930adb0e9c7 ] secy->n_rx_sc is supposed to be the number of _active_ rxsc's within a secy. This is then used by macsec_send_sci to help decide if we should add the SCI to the header or not. This logic is currently broken when we create a new RXSC and turn it off at creation, as create_rx_sc always sets ->active to true (and immediately uses that to increment n_rx_sc), and only later macsec_add_rxsc sets rx_sc->active. Fixes: c09440f7dcb3 ("macsec: introduce IEEE 802.1AE driver") Signed-off-by: Sabrina Dubroca Reviewed-by: Antoine Tenart Reviewed-by: Leon Romanovsky Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/macsec.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c index 65e0af28c950..a816fbbe23a7 100644 --- a/drivers/net/macsec.c +++ b/drivers/net/macsec.c @@ -1390,7 +1390,8 @@ static struct macsec_rx_sc *del_rx_sc(struct macsec_secy *secy, sci_t sci) return NULL; } -static struct macsec_rx_sc *create_rx_sc(struct net_device *dev, sci_t sci) +static struct macsec_rx_sc *create_rx_sc(struct net_device *dev, sci_t sci, + bool active) { struct macsec_rx_sc *rx_sc; struct macsec_dev *macsec; @@ -1414,7 +1415,7 @@ static struct macsec_rx_sc *create_rx_sc(struct net_device *dev, sci_t sci) } rx_sc->sci = sci; - rx_sc->active = true; + rx_sc->active = active; refcount_set(&rx_sc->refcnt, 1); secy = &macsec_priv(dev)->secy; @@ -1867,6 +1868,7 @@ static int macsec_add_rxsc(struct sk_buff *skb, struct genl_info *info) struct macsec_rx_sc *rx_sc; struct nlattr *tb_rxsc[MACSEC_RXSC_ATTR_MAX + 1]; struct macsec_secy *secy; + bool active = true; int ret; if (!attrs[MACSEC_ATTR_IFINDEX]) @@ -1888,15 +1890,15 @@ static int macsec_add_rxsc(struct sk_buff *skb, struct genl_info *info) secy = &macsec_priv(dev)->secy; sci = nla_get_sci(tb_rxsc[MACSEC_RXSC_ATTR_SCI]); - rx_sc = create_rx_sc(dev, sci); + if (tb_rxsc[MACSEC_RXSC_ATTR_ACTIVE]) + active = nla_get_u8(tb_rxsc[MACSEC_RXSC_ATTR_ACTIVE]); + + rx_sc = create_rx_sc(dev, sci, active); if (IS_ERR(rx_sc)) { rtnl_unlock(); return PTR_ERR(rx_sc); } - if (tb_rxsc[MACSEC_RXSC_ATTR_ACTIVE]) - rx_sc->active = !!nla_get_u8(tb_rxsc[MACSEC_RXSC_ATTR_ACTIVE]); - if (macsec_is_offloaded(netdev_priv(dev))) { const struct macsec_ops *ops; struct macsec_context ctx; -- 2.35.1