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Wed, 6 Sep 2017 11:09:20 +0000 From: Matan Azrad To: Jingjing Wu CC: "dev@dpdk.org" , Ori Kam , "Thomas Monjalon" , =?iso-8859-1?Q?Ga=EBtan_Rivet?= Thread-Topic: [dpdk-stable] [PATCH] app/testpmd: fix forward port ids setting Thread-Index: AQHTJVo2lKO7rAT05UWFWNtTAIOC7qKkcdPggAAKhgCAAyyzAIAAC5YQ Date: Wed, 6 Sep 2017 11:09:20 +0000 Message-ID: References: <1504444747-56298-1-git-send-email-matan@mellanox.com> <20170904095231.GD21444@bidouze.vm.6wind.com> <1766803.K7SpHi0fzz@xps> In-Reply-To: <1766803.K7SpHi0fzz@xps> Accept-Language: en-US, he-IL Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=matan@mellanox.com; x-originating-ip: [193.47.165.251] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1; DB6PR0502MB2968; 6:ttj05H4ZgKNgtw0QmpzdEE0dkOQswzw9qp9yAo6jEqBaFKl/AAb8qkvtDUcODWJBUAugLfJG5Oifk5kc9Rhu8iR9MK8pcHD1IcZl0RJ23i2ldyt5QBPYt2MXOCyZXGRQKl02N8Vt/nSHJ4Ydqy/x2t/k8ZmHdiWI2s8W6SB5QTijAy//KhxLDTJ1d3B7XIbwIDkQ+AmcGyuFvvGmaENvOf3Zxs8Cqzkhusv2uXE3gVEaEaHfCHAow/jR/02MK806+LvrA93ZrNM4v7nuEqYZA68u0EEm4CUtS/jOJkK7GZgXfcQzwgdPWMP8TSMuv3KcA8rhopz8M/tBxR4SOe6t6g==; 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SFS:(10009020)(6009001)(39860400002)(377454003)(76104003)(51444003)(13464003)(53754006)(199003)(24454002)(189002)(5890100001)(101416001)(86362001)(2950100002)(6916009)(2900100001)(50986999)(5660300001)(189998001)(7696004)(229853002)(54356999)(76176999)(74316002)(66066001)(54906002)(14454004)(110136004)(966005)(55016002)(53546010)(99286003)(6436002)(6246003)(53936002)(33656002)(9686003)(3846002)(97736004)(93886005)(81166006)(6306002)(81156014)(8676002)(68736007)(102836003)(305945005)(5250100002)(25786009)(6116002)(106356001)(8936002)(45080400002)(105586002)(6506006)(3280700002)(4326008)(2906002)(478600001)(3660700001)(7736002); DIR:OUT; SFP:1101; SCL:1; SRVR:DB6PR0502MB2968; H:DB6PR0502MB3048.eurprd05.prod.outlook.com; FPR:; SPF:None; PTR:InfoNoRecords; A:1; MX:1; LANG:en; received-spf: None (protection.outlook.com: mellanox.com does not designate permitted sender hosts) spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: Mellanox.com X-MS-Exchange-CrossTenant-originalarrivaltime: 06 Sep 2017 11:09:20.8360 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: a652971c-7d2e-4d9b-a6a4-d149256f461b X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB6PR0502MB2968 Subject: Re: [dpdk-dev] [dpdk-stable] [PATCH] app/testpmd: fix forward port ids setting X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Sep 2017 11:09:22 -0000 Hi Jinging, > -----Original Message----- > From: Thomas Monjalon [mailto:thomas@monjalon.net] > Sent: Wednesday, September 6, 2017 1:21 PM > To: Ga=EBtan Rivet ; Matan Azrad > > Cc: Jingjing Wu ; dev@dpdk.org; Ori Kam > > Subject: Re: [dpdk-stable] [PATCH] app/testpmd: fix forward port ids sett= ing >=20 > 04/09/2017 11:52, Ga=EBtan Rivet: > > On Mon, Sep 04, 2017 at 09:25:04AM +0000, Matan Azrad wrote: > > > From: Ga=EBtan Rivet [mailto:gaetan.rivet@6wind.com] > > > > On Sun, Sep 03, 2017 at 04:19:07PM +0300, Matan Azrad wrote: > > > > > Hi All > > > > > I would like to bring up a discussion to complete this bug fix. > > > > > > > > > > When user wants to set the list of forwarding ports by "set portl= ist" > > > > > (testpmd command line), the testpmd application checks the > > > > > availability of the ports by rte_eth_dev_is_valid_port API. > > > > > By this way, it gets the DEFERRED port as valid port and will > > > > > try to recieve\send packets via this port. > > > > > > > > > > This scenario will cause the same error as this patch fixes. > > > > > > > > > > Should testpmd allow user to run traffic by DEFERRED port directl= y? > > > > > > > > > > If any application wants to check a port availability for device > > > > > usage (conf\rxtx), Which API should be used? > > > > > > > > > > According to the patch cb894d99eceb ("ethdev: add deferred > > > > > intermediate device state"), DEFERRED ports should be invisible > > > > > to application, So maybe the rte_eth_dev_is_valid_port API > > > > > should be internal and a new ethdev API should be created for > applications. > > > > > > > > > > What do you think? > > > > > > > > > > > > > I think that regardless of the semantic of the DEFERRED state or > > > > any other port handling, the correct assumption is to consider any > > > > port iterated over by RTE_ETH_FOREACH_DEV to be the exact set of > > > > devices that are supposed to be usable. In the event of an API > > > > evolution regarding port states, this macro should remain correct. > > > > > > > > So I think your fix is correct, and that the implication of > > > > RTE_ETH_FOREACH_DEV avoiding DEFERRED devices is correct. > > > > > > > > > > This patch fixes the default forward ports setting (actually when > > > user don't use --portmask param or "set portlist"), But it don't fix = the port > validation which PMD does for "set portlist" command. > > > So, the discussion is how to fix this port validation. > > > > You could make a static rte_eth_dev_is_valid_port with a different > > name, declare both RTE_ETH_VALID_PORT* macros within rte_ethdev.c > and > > introduce a new rte_eth_dev_is_valid_port which would restrict devices > > to those ATTACHED. > > > > I'm not sure this would be interesting for applications. Currently > > this check is performed internally by the ether layer, I guess most > > applications rely on it. Making the "extended" version (ATTACHED + > > DEFERRED) private with the strict one public would probably not change > > behaviors, thus it would probably have little to no effect. > > > > So my opinion is "why not, but the risk is adding dead code for no > > real benefit". > > > > > In current code, testpmd uses rte_eth_dev_is_valid_port which return > the DEFERRED device too for forwarding. > > > Should it use the RTE_ETH_FOREACH_DEV iterator for one port > validation? > > > Don't you think we need new API for one port? >=20 > Please, let's continue this ethdev discussion in a separate thread. > I've started a new one: > https://emea01.safelinks.protection.outlook.com/?url=3Dhttp%3A%2F > %2Fdpdk.org%2Fml%2Farchives%2Fdev%2F2017- > September%2F074656.html&data=3D02%7C01%7Corika%40mellanox.com%7C5 > 9017f577e004c8be80c08d4f51104ec%7Ca652971c7d2e4d9ba6a4d149256f461b > %7C0%7C0%7C636402900840946032&sdata=3DlPFh1ro1cJTyiYYC7KQtRm7CQ8M > rkct7i6%2BUBW1HEsM%3D&reserved=3D0 I think you can acknowledge this fix for the default forward port IDs setti= ng (this patch fixes it). I will send fix in a separated patch to the "set portlist" port validation= after ethdev discussion will be done. Regards, Matan Azrad