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=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,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 45F36C2B9F8 for ; Tue, 25 May 2021 15:38:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 176CD613D6 for ; Tue, 25 May 2021 15:38:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234222AbhEYPjb (ORCPT ); Tue, 25 May 2021 11:39:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34882 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234191AbhEYPja (ORCPT ); Tue, 25 May 2021 11:39:30 -0400 Received: from mail-pl1-x631.google.com (mail-pl1-x631.google.com [IPv6:2607:f8b0:4864:20::631]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 38C4DC061574 for ; Tue, 25 May 2021 08:38:01 -0700 (PDT) Received: by mail-pl1-x631.google.com with SMTP id v13so16530592ple.9 for ; Tue, 25 May 2021 08:38:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version; bh=iyubgVIgN9mWbrfZmCC6Zed9u6EAzHTKdSZRiTzxPbo=; b=JDbgGHMaR9As27G2QvnjBTOqKaxUWxn/zRncvZ89Cd6W09eE3Sr79a/QRuKuln/cF1 CnLYW04DdCm7gEEiFP5w9nXfKU8oHT1paycq3P8ivyTxg0p2lr90FUBYrzMYTntGdsnS 8r0JRkXwXJ4vkHsc7cEJLQwWCnQP1j+eBA3QY= 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; bh=iyubgVIgN9mWbrfZmCC6Zed9u6EAzHTKdSZRiTzxPbo=; b=hUDeTZu+q6ov5QEXzZxdzNu4FKK0kZ52rBebesCCN4oOuIHDdWyt1Zu9pu9OtDBVjA yxsb1UrkiL93kpC8PEDmgMoZ2Cpja+fFFghzT+3QjjkEVmsxdTYBQ5dDnH2N04HqwQo5 KBl3dKhC+UJoRPxbOCUOx3AodA4XXMztSbRWKE0yiIaAFfmhntZdTuKyUaaHsWwKPhNU JwgODtB6oeLgJ+S9BPgpsbJKHicn3PgP6HgL8rUZKWJ0+ywVJYd3rd4t6rD6TZ3Y4QYt lQk4Ab+ZcufUyXSoU3Pj2n33YM8y2QhZjYwUiFST7MH64adrJjC3NYqu9zXLSEEe5krG qWtw== X-Gm-Message-State: AOAM533C0KvShrVcpI4ydYmSWOjDosdhMoVyqtCk06PU05Og8bcXUx6b X0MGdu+CWA4+Kq+TpzDoGzuMP5Lj4UQvphGG/Cj6F0qbm/pgJApuVB5Wm5MP33mjA9EHE/W8239 yWoTHADboGqDCymC7qiPRLZQYMeV8BN/0XD7NuvdUq7dZyGxmiREGkashjmlW0lMieGUU2bEmuW dHcyB1R/Q= X-Google-Smtp-Source: ABdhPJxh2cJm3QoDtEpNRfxf6s1wi6sPm4crKmAlQAZw4IoSVMUJ3dm6ZVKJ0gp4rtqlaK7FzK/NrA== X-Received: by 2002:a17:903:1c3:b029:f1:ecf4:f971 with SMTP id e3-20020a17090301c3b02900f1ecf4f971mr31180578plh.6.1621957080062; Tue, 25 May 2021 08:38:00 -0700 (PDT) Received: from localhost.localdomain ([192.19.250.250]) by smtp.gmail.com with ESMTPSA id f14sm13388369pjq.50.2021.05.25.08.37.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 25 May 2021 08:37:59 -0700 (PDT) From: Boris Sukholitko To: netdev@vger.kernel.org, Jamal Hadi Salim , Jiri Pirko , Cong Wang Cc: Ilya Lifshits , Shmulik Ladkani , Jakub Kicinski , Davide Caratti , Boris Sukholitko Subject: [PATCH net-next v2 1/3] net/sched: act_vlan: Fix modify to allow 0 Date: Tue, 25 May 2021 18:35:59 +0300 Message-Id: <20210525153601.6705-2-boris.sukholitko@broadcom.com> X-Mailer: git-send-email 2.29.3 In-Reply-To: <20210525153601.6705-1-boris.sukholitko@broadcom.com> References: <20210525153601.6705-1-boris.sukholitko@broadcom.com> MIME-Version: 1.0 Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="000000000000a22fa505c3294f95" Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org --000000000000a22fa505c3294f95 Content-Transfer-Encoding: 8bit Currently vlan modification action checks existence of vlan priority by comparing it to 0. Therefore it is impossible to modify existing vlan tag to have priority 0. For example, the following tc command will change the vlan id but will not affect vlan priority: tc filter add dev eth1 ingress matchall action vlan modify id 300 \ priority 0 pipe mirred egress redirect dev eth2 The incoming packet on eth1: ethertype 802.1Q (0x8100), vlan 200, p 4, ethertype IPv4 will be changed to: ethertype 802.1Q (0x8100), vlan 300, p 4, ethertype IPv4 although the user has intended to have p == 0. The fix is to add tcfv_push_prio_exists flag to struct tcf_vlan_params and rely on it when deciding to set the priority. Fixes: 45a497f2d149a4a8061c (net/sched: act_vlan: Introduce TCA_VLAN_ACT_MODIFY vlan action) Signed-off-by: Boris Sukholitko --- include/net/tc_act/tc_vlan.h | 1 + net/sched/act_vlan.c | 7 +++++-- 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/include/net/tc_act/tc_vlan.h b/include/net/tc_act/tc_vlan.h index f051046ba034..f94b8bc26f9e 100644 --- a/include/net/tc_act/tc_vlan.h +++ b/include/net/tc_act/tc_vlan.h @@ -16,6 +16,7 @@ struct tcf_vlan_params { u16 tcfv_push_vid; __be16 tcfv_push_proto; u8 tcfv_push_prio; + bool tcfv_push_prio_exists; struct rcu_head rcu; }; diff --git a/net/sched/act_vlan.c b/net/sched/act_vlan.c index 1cac3c6fbb49..cca10b5e99c9 100644 --- a/net/sched/act_vlan.c +++ b/net/sched/act_vlan.c @@ -70,7 +70,7 @@ static int tcf_vlan_act(struct sk_buff *skb, const struct tc_action *a, /* replace the vid */ tci = (tci & ~VLAN_VID_MASK) | p->tcfv_push_vid; /* replace prio bits, if tcfv_push_prio specified */ - if (p->tcfv_push_prio) { + if (p->tcfv_push_prio_exists) { tci &= ~VLAN_PRIO_MASK; tci |= p->tcfv_push_prio << VLAN_PRIO_SHIFT; } @@ -121,6 +121,7 @@ static int tcf_vlan_init(struct net *net, struct nlattr *nla, struct tc_action_net *tn = net_generic(net, vlan_net_id); struct nlattr *tb[TCA_VLAN_MAX + 1]; struct tcf_chain *goto_ch = NULL; + bool push_prio_exists = false; struct tcf_vlan_params *p; struct tc_vlan *parm; struct tcf_vlan *v; @@ -189,7 +190,8 @@ static int tcf_vlan_init(struct net *net, struct nlattr *nla, push_proto = htons(ETH_P_8021Q); } - if (tb[TCA_VLAN_PUSH_VLAN_PRIORITY]) + push_prio_exists = !!tb[TCA_VLAN_PUSH_VLAN_PRIORITY]; + if (push_prio_exists) push_prio = nla_get_u8(tb[TCA_VLAN_PUSH_VLAN_PRIORITY]); break; case TCA_VLAN_ACT_POP_ETH: @@ -241,6 +243,7 @@ static int tcf_vlan_init(struct net *net, struct nlattr *nla, p->tcfv_action = action; p->tcfv_push_vid = push_vid; p->tcfv_push_prio = push_prio; + p->tcfv_push_prio_exists = push_prio_exists; p->tcfv_push_proto = push_proto; if (action == TCA_VLAN_ACT_PUSH_ETH) { -- 2.29.3 --000000000000a22fa505c3294f95 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIIQeQYJKoZIhvcNAQcCoIIQajCCEGYCAQExDzANBglghkgBZQMEAgEFADALBgkqhkiG9w0BBwGg gg3QMIIFDTCCA/WgAwIBAgIQeEqpED+lv77edQixNJMdADANBgkqhkiG9w0BAQsFADBMMSAwHgYD VQQLExdHbG9iYWxTaWduIFJvb3QgQ0EgLSBSMzETMBEGA1UEChMKR2xvYmFsU2lnbjETMBEGA1UE AxMKR2xvYmFsU2lnbjAeFw0yMDA5MTYwMDAwMDBaFw0yODA5MTYwMDAwMDBaMFsxCzAJBgNVBAYT AkJFMRkwFwYDVQQKExBHbG9iYWxTaWduIG52LXNhMTEwLwYDVQQDEyhHbG9iYWxTaWduIEdDQyBS MyBQZXJzb25hbFNpZ24gMiBDQSAyMDIwMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA vbCmXCcsbZ/a0fRIQMBxp4gJnnyeneFYpEtNydrZZ+GeKSMdHiDgXD1UnRSIudKo+moQ6YlCOu4t rVWO/EiXfYnK7zeop26ry1RpKtogB7/O115zultAz64ydQYLe+a1e/czkALg3sgTcOOcFZTXk38e aqsXsipoX1vsNurqPtnC27TWsA7pk4uKXscFjkeUE8JZu9BDKaswZygxBOPBQBwrA5+20Wxlk6k1 e6EKaaNaNZUy30q3ArEf30ZDpXyfCtiXnupjSK8WU2cK4qsEtj09JS4+mhi0CTCrCnXAzum3tgcH cHRg0prcSzzEUDQWoFxyuqwiwhHu3sPQNmFOMwIDAQABo4IB2jCCAdYwDgYDVR0PAQH/BAQDAgGG MGAGA1UdJQRZMFcGCCsGAQUFBwMCBggrBgEFBQcDBAYKKwYBBAGCNxQCAgYKKwYBBAGCNwoDBAYJ KwYBBAGCNxUGBgorBgEEAYI3CgMMBggrBgEFBQcDBwYIKwYBBQUHAxEwEgYDVR0TAQH/BAgwBgEB /wIBADAdBgNVHQ4EFgQUljPR5lgXWzR1ioFWZNW+SN6hj88wHwYDVR0jBBgwFoAUj/BLf6guRSSu TVD6Y5qL3uLdG7wwegYIKwYBBQUHAQEEbjBsMC0GCCsGAQUFBzABhiFodHRwOi8vb2NzcC5nbG9i YWxzaWduLmNvbS9yb290cjMwOwYIKwYBBQUHMAKGL2h0dHA6Ly9zZWN1cmUuZ2xvYmFsc2lnbi5j b20vY2FjZXJ0L3Jvb3QtcjMuY3J0MDYGA1UdHwQvMC0wK6ApoCeGJWh0dHA6Ly9jcmwuZ2xvYmFs c2lnbi5jb20vcm9vdC1yMy5jcmwwWgYDVR0gBFMwUTALBgkrBgEEAaAyASgwQgYKKwYBBAGgMgEo CjA0MDIGCCsGAQUFBwIBFiZodHRwczovL3d3dy5nbG9iYWxzaWduLmNvbS9yZXBvc2l0b3J5LzAN BgkqhkiG9w0BAQsFAAOCAQEAdAXk/XCnDeAOd9nNEUvWPxblOQ/5o/q6OIeTYvoEvUUi2qHUOtbf jBGdTptFsXXe4RgjVF9b6DuizgYfy+cILmvi5hfk3Iq8MAZsgtW+A/otQsJvK2wRatLE61RbzkX8 9/OXEZ1zT7t/q2RiJqzpvV8NChxIj+P7WTtepPm9AIj0Keue+gS2qvzAZAY34ZZeRHgA7g5O4TPJ /oTd+4rgiU++wLDlcZYd/slFkaT3xg4qWDepEMjT4T1qFOQIL+ijUArYS4owpPg9NISTKa1qqKWJ jFoyms0d0GwOniIIbBvhI2MJ7BSY9MYtWVT5jJO3tsVHwj4cp92CSFuGwunFMzCCA18wggJHoAMC AQICCwQAAAAAASFYUwiiMA0GCSqGSIb3DQEBCwUAMEwxIDAeBgNVBAsTF0dsb2JhbFNpZ24gUm9v dCBDQSAtIFIzMRMwEQYDVQQKEwpHbG9iYWxTaWduMRMwEQYDVQQDEwpHbG9iYWxTaWduMB4XDTA5 MDMxODEwMDAwMFoXDTI5MDMxODEwMDAwMFowTDEgMB4GA1UECxMXR2xvYmFsU2lnbiBSb290IENB IC0gUjMxEzARBgNVBAoTCkdsb2JhbFNpZ24xEzARBgNVBAMTCkdsb2JhbFNpZ24wggEiMA0GCSqG SIb3DQEBAQUAA4IBDwAwggEKAoIBAQDMJXaQeQZ4Ihb1wIO2hMoonv0FdhHFrYhy/EYCQ8eyip0E XyTLLkvhYIJG4VKrDIFHcGzdZNHr9SyjD4I9DCuul9e2FIYQebs7E4B3jAjhSdJqYi8fXvqWaN+J J5U4nwbXPsnLJlkNc96wyOkmDoMVxu9bi9IEYMpJpij2aTv2y8gokeWdimFXN6x0FNx04Druci8u nPvQu7/1PQDhBjPogiuuU6Y6FnOM3UEOIDrAtKeh6bJPkC4yYOlXy7kEkmho5TgmYHWyn3f/kRTv riBJ/K1AFUjRAjFhGV64l++td7dkmnq/X8ET75ti+w1s4FRpFqkD2m7pg5NxdsZphYIXAgMBAAGj QjBAMA4GA1UdDwEB/wQEAwIBBjAPBgNVHRMBAf8EBTADAQH/MB0GA1UdDgQWBBSP8Et/qC5FJK5N UPpjmove4t0bvDANBgkqhkiG9w0BAQsFAAOCAQEAS0DbwFCq/sgM7/eWVEVJu5YACUGssxOGhigH M8pr5nS5ugAtrqQK0/Xx8Q+Kv3NnSoPHRHt44K9ubG8DKY4zOUXDjuS5V2yq/BKW7FPGLeQkbLmU Y/vcU2hnVj6DuM81IcPJaP7O2sJTqsyQiunwXUaMld16WCgaLx3ezQA3QY/tRG3XUyiXfvNnBB4V 14qWtNPeTCekTBtzc3b0F5nCH3oO4y0IrQocLP88q1UOD5F+NuvDV0m+4S4tfGCLw0FREyOdzvcy a5QBqJnnLDMfOjsl0oZAzjsshnjJYS8Uuu7bVW/fhO4FCU29KNhyztNiUGUe65KXgzHZs7XKR1g/ XzCCBVgwggRAoAMCAQICDDSzinKpvcPTN4ZIJTANBgkqhkiG9w0BAQsFADBbMQswCQYDVQQGEwJC RTEZMBcGA1UEChMQR2xvYmFsU2lnbiBudi1zYTExMC8GA1UEAxMoR2xvYmFsU2lnbiBHQ0MgUjMg UGVyc29uYWxTaWduIDIgQ0EgMjAyMDAeFw0yMTAyMjIwNzMwMDRaFw0yMjA5MDUwNzM3NTVaMIGW MQswCQYDVQQGEwJJTjESMBAGA1UECBMJS2FybmF0YWthMRIwEAYDVQQHEwlCYW5nYWxvcmUxFjAU BgNVBAoTDUJyb2FkY29tIEluYy4xGTAXBgNVBAMTEEJvcmlzIFN1a2hvbGl0a28xLDAqBgkqhkiG 9w0BCQEWHWJvcmlzLnN1a2hvbGl0a29AYnJvYWRjb20uY29tMIIBIjANBgkqhkiG9w0BAQEFAAOC AQ8AMIIBCgKCAQEAy/C7bjpxs+95egWV8sWrK9KO0SQi6Nxu14tJBgP+MOK5tvokizPFHoiXTymZ 7ClfnmbcqT4PzWgI3thyfk64bgUo1nQkCTApn7ov3IRsWjmHExLSNoJ/siUHagO6BPAk4JSycrj5 9tC9sL4FnIAbAHmOSILCyGyyaBAcmiyH/3toYqXyjJkK+vbWQSTxk2NlqJLIN/ypLJ1pYffVZGUs 52g1hlQtHhgLIznB1Qx3Fop3nOUk8nNpQLON/aM8K5sl18964c7aXh7YZnalUQv3md4p2rAQQqIR rZ8HBc7YjlZynwOnZl1NrK4cP5aM9lMkbfRGIUitHTIhoDYp8IZ1dwIDAQABo4IB3jCCAdowDgYD VR0PAQH/BAQDAgWgMIGjBggrBgEFBQcBAQSBljCBkzBOBggrBgEFBQcwAoZCaHR0cDovL3NlY3Vy ZS5nbG9iYWxzaWduLmNvbS9jYWNlcnQvZ3NnY2NyM3BlcnNvbmFsc2lnbjJjYTIwMjAuY3J0MEEG CCsGAQUFBzABhjVodHRwOi8vb2NzcC5nbG9iYWxzaWduLmNvbS9nc2djY3IzcGVyc29uYWxzaWdu MmNhMjAyMDBNBgNVHSAERjBEMEIGCisGAQQBoDIBKAowNDAyBggrBgEFBQcCARYmaHR0cHM6Ly93 d3cuZ2xvYmFsc2lnbi5jb20vcmVwb3NpdG9yeS8wCQYDVR0TBAIwADBJBgNVHR8EQjBAMD6gPKA6 hjhodHRwOi8vY3JsLmdsb2JhbHNpZ24uY29tL2dzZ2NjcjNwZXJzb25hbHNpZ24yY2EyMDIwLmNy bDAoBgNVHREEITAfgR1ib3Jpcy5zdWtob2xpdGtvQGJyb2FkY29tLmNvbTATBgNVHSUEDDAKBggr BgEFBQcDBDAfBgNVHSMEGDAWgBSWM9HmWBdbNHWKgVZk1b5I3qGPzzAdBgNVHQ4EFgQUtBmGs9S4 t1FcFSfkrP2LKQQwBKMwDQYJKoZIhvcNAQELBQADggEBAJMAjVBkRmr1lvVvEjMaLfvMhwGpUfh6 CMZsKICyz/ZZmvTmIZNwy+7b9r6gjLCV4tP63tz4U72X9qJwfzldAlYLYWIq9e/DKDjwJRYlzN8H 979QJ0DHPSJ9EpvSKXob7Ci/FMkTfq1eOLjkPRF72mn8KPbHjeN3VVcn7oTe5IdIXaaZTryjM5Ud bR7s0ZZh6mOhJtqk3k1L1DbDTVB4tOZXZHRDghEGaQSnwU/qxCNlvQ52fImLFVwXKPnw6+9dUvFR ORaZ1pZbapCGbs/4QLplv8UaBmpFfK6MW/44zcsDbtCFfgIP3fEJBByIREhvRC5mtlRtdM+SSjgS ZiNfUggxggJtMIICaQIBATBrMFsxCzAJBgNVBAYTAkJFMRkwFwYDVQQKExBHbG9iYWxTaWduIG52 LXNhMTEwLwYDVQQDEyhHbG9iYWxTaWduIEdDQyBSMyBQZXJzb25hbFNpZ24gMiBDQSAyMDIwAgw0 s4pyqb3D0zeGSCUwDQYJYIZIAWUDBAIBBQCggdQwLwYJKoZIhvcNAQkEMSIEIPVbv9jN8ID/zghB qNWy74MMfs1n2IPoOGPWfd7AGuhPMBgGCSqGSIb3DQEJAzELBgkqhkiG9w0BBwEwHAYJKoZIhvcN AQkFMQ8XDTIxMDUyNTE1MzgwMFowaQYJKoZIhvcNAQkPMVwwWjALBglghkgBZQMEASowCwYJYIZI AWUDBAEWMAsGCWCGSAFlAwQBAjAKBggqhkiG9w0DBzALBgkqhkiG9w0BAQowCwYJKoZIhvcNAQEH MAsGCWCGSAFlAwQCATANBgkqhkiG9w0BAQEFAASCAQCRd3e/JrDK9QRDUhj0Hq6Hx2VT38ds8l+E cu8uc3O6Z51aCRPT6AV56B/0Sm1HujZSNvwbq/dXJepan5iSVkK1G3G1mmux6kCQImRCmEDD766M 4Y1PxvB8nzHLnGZ2umLlxhtqEauz32CoREXLLTpcwc3WQgcE1v5ZngTg6fDaH4WNosGhPs5JCtbr U34VVAB3DCDZEsqV8v/T8hObLQ5nQVWlmXtVgSVSKGiAxIz2WpXb4Ljq6LB7R+70aD7cJs/fSchl cD/3uH3xCbZcqdxRi+Y8v7/hWcxSY2S4KgQJ8ScpBgHFcKVO8OAQ9yBLkHun0R/UHmjjt+R74Cja 7PYE --000000000000a22fa505c3294f95--