From patchwork Fri Oct 28 13:13:59 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Machon X-Patchwork-Id: 13023590 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 41E48ECAAA1 for ; Fri, 28 Oct 2022 13:05:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=S3Tpz2O342YRx+1+atLt/9D8ftWZu8eJOFq6RQ05OlA=; b=NEMCkPdJ76rts2 AG8yi+g/ZUJnBAES4PkuVZUwsikfjMKi34BNfdWmTN+H3llc+CqQ1r5H6B0U5rG6ZxHPQA+zQ/P7L ivPbUbLmOC+P/wP5hlvZnkol7q6I5SiJGrGtiy/V95vQOUt5+etxP2wbWJO7vCbh8Kj61Mf8W09HS 0mLE1SxZj7Llu1Vwl92g6kI0z7Q6zUYZcDsVuR+85ecMs9Nvf5w42GR4kAOxx70f2ZygS66IZhZ2u i6mTIQr3KeoGrfdkfJkAy2aMCb5EKl0xzDsC7sHBKO3JlrmygthLR8RX0WeOXdrnhb5H/20PhVzHY WZYlcKYE5r/2wkAzfs2g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1ooP2V-00HDIx-Ko; Fri, 28 Oct 2022 13:04:47 +0000 Received: from esa.microchip.iphmx.com ([68.232.153.233]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1ooP2Q-00HDH4-9M for linux-arm-kernel@lists.infradead.org; Fri, 28 Oct 2022 13:04:43 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1666962283; x=1698498283; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=yuaZtzldNYKAWOQfEZAb5+0OMaFaC28v7Or0OmMKOsY=; b=hm2jqdBrMY7UZACOw+NRBYjFpJ/+Bx04lyk5gbPaapNR3XlMsw5kYDLG qNCfPEB/0qEzs+8aDKAdjx5q46MMwzKoXCmLPJeDcarBbYSSPj9HKp67A tLWBLBNc57In965v4zw673UQYq4WLpT2LSLEBnYvbGNBDWlb0y0aV5N95 Kl1bYSoChXyiqTxBlwlrkVyhcbDh6Mz+1By+yyfvUnjcXHh3Vdj/v0qmS aKIJHneyGV0fqaCCwWE9ZbOtUco1JPAlaj9zj5W5euxBChJeEoPDV1dx9 H7ggU+FD9UefSfb/C/q3nenCo84KlWXe5Ig9tvoyjrWPXs57IYqVI/ZJL w==; X-IronPort-AV: E=Sophos;i="5.95,221,1661842800"; d="scan'208";a="186698439" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa5.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 28 Oct 2022 06:04:40 -0700 Received: from chn-vm-ex02.mchp-main.com (10.10.85.144) by chn-vm-ex01.mchp-main.com (10.10.85.143) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.12; Fri, 28 Oct 2022 06:04:39 -0700 Received: from DEN-LT-70577.microchip.com (10.10.115.15) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server id 15.1.2507.12 via Frontend Transport; Fri, 28 Oct 2022 06:04:36 -0700 From: Daniel Machon To: CC: , , , , , , , , , , , , , , , , , Subject: [PATCH net-next v5 2/6] net: dcb: add new apptrust attribute Date: Fri, 28 Oct 2022 15:13:59 +0200 Message-ID: <20221028131403.1055694-3-daniel.machon@microchip.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221028131403.1055694-1-daniel.machon@microchip.com> References: <20221028131403.1055694-1-daniel.machon@microchip.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221028_060442_356639_2AC6AAD8 X-CRM114-Status: GOOD ( 18.96 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add new apptrust extension attributes to the 8021Qaz APP managed object. Two new attributes, DCB_ATTR_DCB_APP_TRUST_TABLE and DCB_ATTR_DCB_APP_TRUST, has been added. Trusted selectors are passed in the nested attribute DCB_ATTR_DCB_APP_TRUST, in order of precedence. The new attributes are meant to allow drivers, whose hw supports the notion of trust, to be able to set whether a particular app selector is trusted - and in which order. Signed-off-by: Daniel Machon --- include/net/dcbnl.h | 4 ++ include/uapi/linux/dcbnl.h | 10 +++++ net/dcb/dcbnl.c | 78 +++++++++++++++++++++++++++++++++++++- 3 files changed, 90 insertions(+), 2 deletions(-) diff --git a/include/net/dcbnl.h b/include/net/dcbnl.h index 2b2d86fb3131..8841ab6c2de7 100644 --- a/include/net/dcbnl.h +++ b/include/net/dcbnl.h @@ -109,6 +109,10 @@ struct dcbnl_rtnl_ops { /* buffer settings */ int (*dcbnl_getbuffer)(struct net_device *, struct dcbnl_buffer *); int (*dcbnl_setbuffer)(struct net_device *, struct dcbnl_buffer *); + + /* apptrust */ + int (*dcbnl_setapptrust)(struct net_device *, u8 *, int); + int (*dcbnl_getapptrust)(struct net_device *, u8 *, int *); }; #endif /* __NET_DCBNL_H__ */ diff --git a/include/uapi/linux/dcbnl.h b/include/uapi/linux/dcbnl.h index dc7ef96207ca..9344e3ba5768 100644 --- a/include/uapi/linux/dcbnl.h +++ b/include/uapi/linux/dcbnl.h @@ -410,6 +410,7 @@ enum dcbnl_attrs { * @DCB_ATTR_IEEE_PEER_ETS: peer ETS configuration - get only * @DCB_ATTR_IEEE_PEER_PFC: peer PFC configuration - get only * @DCB_ATTR_IEEE_PEER_APP: peer APP tlv - get only + * @DCB_ATTR_DCB_APP_TRUST_TABLE: selector trust table */ enum ieee_attrs { DCB_ATTR_IEEE_UNSPEC, @@ -423,6 +424,7 @@ enum ieee_attrs { DCB_ATTR_IEEE_QCN, DCB_ATTR_IEEE_QCN_STATS, DCB_ATTR_DCB_BUFFER, + DCB_ATTR_DCB_APP_TRUST_TABLE, __DCB_ATTR_IEEE_MAX }; #define DCB_ATTR_IEEE_MAX (__DCB_ATTR_IEEE_MAX - 1) @@ -435,6 +437,14 @@ enum ieee_attrs_app { }; #define DCB_ATTR_IEEE_APP_MAX (__DCB_ATTR_IEEE_APP_MAX - 1) +enum dcbnl_attrs_apptrust { + DCB_ATTR_DCB_APP_TRUST_UNSPEC, + DCB_ATTR_DCB_APP_TRUST, + __DCB_ATTR_DCB_APP_TRUST_MAX +}; + +#define DCB_ATTR_DCB_APP_TRUST_MAX (__DCB_ATTR_DCB_APP_TRUST_MAX - 1) + /** * enum cee_attrs - CEE DCBX get attributes. * diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c index 68e033a459af..a56f401aeec4 100644 --- a/net/dcb/dcbnl.c +++ b/net/dcb/dcbnl.c @@ -166,6 +166,7 @@ static const struct nla_policy dcbnl_ieee_policy[DCB_ATTR_IEEE_MAX + 1] = { [DCB_ATTR_IEEE_QCN] = {.len = sizeof(struct ieee_qcn)}, [DCB_ATTR_IEEE_QCN_STATS] = {.len = sizeof(struct ieee_qcn_stats)}, [DCB_ATTR_DCB_BUFFER] = {.len = sizeof(struct dcbnl_buffer)}, + [DCB_ATTR_DCB_APP_TRUST_TABLE] = {.type = NLA_NESTED}, }; /* DCB number of traffic classes nested attributes. */ @@ -1081,9 +1082,9 @@ static int dcbnl_build_peer_app(struct net_device *netdev, struct sk_buff* skb, /* Handle IEEE 802.1Qaz/802.1Qau/802.1Qbb GET commands. */ static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev) { - struct nlattr *ieee, *app; - struct dcb_app_type *itr; const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; + struct nlattr *ieee, *app, *apptrust; + struct dcb_app_type *itr; int dcbx; int err; @@ -1185,6 +1186,29 @@ static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev) spin_unlock_bh(&dcb_lock); nla_nest_end(skb, app); + if (ops->dcbnl_getapptrust) { + u8 selectors[IEEE_8021QAZ_APP_SEL_MAX + 1] = {0}; + int nselectors, i; + + apptrust = nla_nest_start(skb, DCB_ATTR_DCB_APP_TRUST_TABLE); + if (!app) + return -EMSGSIZE; + + err = ops->dcbnl_getapptrust(netdev, selectors, &nselectors); + if (!err) { + for (i = 0; i < nselectors; i++) { + err = nla_put_u8(skb, DCB_ATTR_DCB_APP_TRUST, + selectors[i]); + if (err) { + nla_nest_cancel(skb, apptrust); + return err; + } + } + } + + nla_nest_end(skb, apptrust); + } + /* get peer info if available */ if (ops->ieee_peer_getets) { struct ieee_ets ets; @@ -1571,6 +1595,56 @@ static int dcbnl_ieee_set(struct net_device *netdev, struct nlmsghdr *nlh, } } + if (ieee[DCB_ATTR_DCB_APP_TRUST_TABLE]) { + u8 selectors[IEEE_8021QAZ_APP_SEL_MAX + 1] = {0}; + struct nlattr *attr; + int nselectors = 0; + u8 selector; + int rem, i; + + if (!ops->dcbnl_setapptrust) { + err = -EOPNOTSUPP; + goto err; + } + + nla_for_each_nested(attr, ieee[DCB_ATTR_DCB_APP_TRUST_TABLE], + rem) { + if (nla_type(attr) != DCB_ATTR_DCB_APP_TRUST || + nla_len(attr) != 1 || + nselectors >= sizeof(selectors)) { + err = -EINVAL; + goto err; + } + + selector = nla_get_u8(attr); + switch (selector) { + case IEEE_8021QAZ_APP_SEL_ETHERTYPE: + case IEEE_8021QAZ_APP_SEL_STREAM: + case IEEE_8021QAZ_APP_SEL_DGRAM: + case IEEE_8021QAZ_APP_SEL_ANY: + case IEEE_8021QAZ_APP_SEL_DSCP: + case DCB_APP_SEL_PCP: + break; + default: + err = -EINVAL; + goto err; + } + /* Duplicate selector ? */ + for (i = 0; i < nselectors; i++) { + if (selectors[i] == selector) { + err = -EINVAL; + goto err; + } + } + + selectors[nselectors++] = selector; + } + + err = ops->dcbnl_setapptrust(netdev, selectors, nselectors); + if (err) + goto err; + } + err: err = nla_put_u8(skb, DCB_ATTR_IEEE, err); dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_SET, seq, 0);