From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id B0CAFA0353; Tue, 5 Nov 2019 13:13:24 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 163B82BDB; Tue, 5 Nov 2019 13:13:24 +0100 (CET) Received: from dispatch1-us1.ppe-hosted.com (dispatch1-us1.ppe-hosted.com [67.231.154.164]) by dpdk.org (Postfix) with ESMTP id 93E4C2BAC for ; Tue, 5 Nov 2019 13:13:22 +0100 (CET) X-Virus-Scanned: Proofpoint Essentials engine Received: from webmail.solarflare.com (uk.solarflare.com [193.34.186.16]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by mx1-us4.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTPS id 724B714005A; Tue, 5 Nov 2019 12:13:02 +0000 (UTC) Received: from [192.168.38.17] (91.220.146.112) by ukex01.SolarFlarecom.com (10.17.10.4) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Tue, 5 Nov 2019 12:12:55 +0000 To: Ferruh Yigit , Ori Kam , "John McNamara" , Marko Kovacevic , Thomas Monjalon CC: "dev@dpdk.org" , "jingjing.wu@intel.com" , "stephen@networkplumber.org" , Jerin Jacob References: <1569479349-36962-1-git-send-email-orika@mellanox.com> <1572479604-178752-1-git-send-email-orika@mellanox.com> <1572479604-178752-3-git-send-email-orika@mellanox.com> <10616bdb-4314-833e-d05e-ab5674763ae1@intel.com> <676258d8-83e6-754c-681e-1e60099f4b31@solarflare.com> <4ec1b7f2-9896-b1e5-8a11-177b7b14eaac@intel.com> From: Andrew Rybchenko Openpgp: preference=signencrypt Autocrypt: addr=arybchenko@solarflare.com; keydata= mQINBF2681gBEACbdTxu8eLL3UX2oAelsnK9GkeaJeUYSOHPJQpV7RL/iaIskqTwBRnhjXt7 j9UEwGA+omnOmqQMpeQTb/F9Ma2dYE+Hw4/t/1KVjxr3ehFaASvwR4fWJfO4e2l/Rk4rG6Yi 5r6CWU2y8su2654Fr8KFc+cMGOAgKoZTZHZsRy5lHpMlemeF+VZkv8L5sYJWPnsypgqlCG3h v6lbtfZs+QqYbFH6bqoZwBAl5irmxywGR7ZJr1GLUZZ1lfdazSY8r6Vz0/Ip/KVxGu2uxo81 QCsAj0ZsQtwji9Sds/prTiPrIjx8Fc/tfbnAuVuPcnPbczwCJACzQr4q26XATL3kVuZhSBWh 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SwOskMKmWsUyHIRMG1p8RpkBQTqY2rGSeUqPSvaqjT0nq+SUEM6qxEXD/2Wqri/X6bamuPDb S0PkBvFD2+0zr5Bc2YkMGPBYPNGZiTp3UjmZlLfn3TiBKIC92jherY563CULjSsiBEJCOSvv 4VPLn5aAcfbCXJnE3IGCp/hPl50iQqu7BPOYBbWXeb9ptDjGCAThNxSz0WAXkmcjAFE8gdE6 Znk9 Message-ID: <38e339da-9900-0e7e-2686-385d77023575@solarflare.com> Date: Tue, 5 Nov 2019 15:12:51 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: <4ec1b7f2-9896-b1e5-8a11-177b7b14eaac@intel.com> Content-Type: text/plain; charset="utf-8" Content-Language: en-GB Content-Transfer-Encoding: 7bit X-Originating-IP: [91.220.146.112] X-ClientProxiedBy: ocex03.SolarFlarecom.com (10.20.40.36) To ukex01.SolarFlarecom.com (10.17.10.4) X-TM-AS-Product-Ver: SMEX-12.5.0.1300-8.5.1010-25022.003 X-TM-AS-Result: No-17.374700-8.000000-10 X-TMASE-MatchedRID: Rp71wniPtoPmLzc6AOD8DfHkpkyUphL9Ud7Bjfo+5jRG7aLtT3oj+3Rt l8qZJtWDtqy4fGtVdQqTH1CW/Tkdqh8owvkAm18tMiMrbc70PfdKgIbix5+XxHy/Hx1AgJrrNrO 5iotCPoZh3GzIVInWKBk2nfcAgjJAlWwztvtayXUtuNep3N20JVQQ0EgzIoPR33Nl3elSfspBSv 6A0J4jg84lkTED1pJUm1DLeXVPAZR2xDmfaGO0dfCoOvLLtsMhw0uUZPC9Hpq2KfJpWmHfUpc1q CkooZMTfrzE68kUPds6Ylk2SluSoMMSd2wnXUfG/NOUkr6ADzfMBINgV4CMF0hcmj54ab4UPyeU ip5R3W0U3y7pzGYFc/BkEhMPw8DLWhGKUaUS+phSFqtD2wqeMVWiBZGwRpH+mXw0RNbqkoKumRs KJTlEnZ8XNNPBC0E11q8UyPiJf74xhcKMC/TCz3YZxYoZm58FaAgj2rUsY5Wzht7teFbZntkbVx yiYfRTydMoingtLFmVpn03E8hP1oLMpz3/Z6r0UeavKZUnS5B6R4v7woaCODb9TB28Ubki+qpXk 9v8uwUkA2nvi0cGp4tNiChhfo8BnU4Y8605XzkdmrVHa4DGTJ5TXHTTf49lmyiLZetSf8nJ4y0w P1A6AKEwgORH8p/AuRuWSuAIu/jdB/CxWTRRu/558CedkGIvzP4Frv6e/e6WOaWrm3BcSr/GCGi CMxZ2wKaRUAVKbsgIGcWJrw8mIX7cGd19dSFd X-TM-AS-User-Approved-Sender: Yes X-TM-AS-User-Blocked-Sender: No X-TMASE-Result: 10--17.374700-8.000000 X-TMASE-Version: SMEX-12.5.0.1300-8.5.1010-25022.003 X-MDID: 1572956002-0Rah6Onw10lG Subject: Re: [dpdk-dev] [PATCH v7 02/14] ethdev: add support for hairpin queue 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: , Errors-To: dev-bounces@dpdk.org Sender: "dev" On 11/5/19 3:05 PM, Ferruh Yigit wrote: > On 11/5/2019 11:49 AM, Andrew Rybchenko wrote: >> On 11/5/19 2:36 PM, Ori Kam wrote: >>> >>> >>>> -----Original Message----- >>>> From: Ferruh Yigit >>>> Sent: Tuesday, November 5, 2019 1:25 PM >>>> To: Ori Kam ; John McNamara >>>> ; Marko Kovacevic >>>> ; Thomas Monjalon ; >>>> Andrew Rybchenko >>>> Cc: dev@dpdk.org; jingjing.wu@intel.com; stephen@networkplumber.org; Jerin >>>> Jacob >>>> Subject: Re: [PATCH v7 02/14] ethdev: add support for hairpin queue >>>> >>>> On 10/30/2019 11:53 PM, Ori Kam wrote: >>>>> This commit introduce hairpin queue type. >>>>> >>>>> The hairpin queue in build from Rx queue binded to Tx queue. >>>>> It is used to offload traffic coming from the wire and redirect it back >>>>> to the wire. >>>>> >>>>> There are 3 new functions: >>>>> - rte_eth_dev_hairpin_capability_get >>>>> - rte_eth_rx_hairpin_queue_setup >>>>> - rte_eth_tx_hairpin_queue_setup >>>>> >>>>> In order to use the queue, there is a need to create rte_flow >>>>> with queue / RSS action that targets one or more of the Rx queues. >>>>> >>>>> Signed-off-by: Ori Kam >>>>> Reviewed-by: Andrew Rybchenko >>>> >>>> <...> >>>> >>>>> #include >>>>> >>>>> /** >>>>> + * @internal >>>>> + * Check if the selected Rx queue is hairpin queue. >>>>> + * >>>>> + * @param dev >>>>> + * Pointer to the selected device. >>>>> + * @param queue_id >>>>> + * The selected queue. >>>>> + * >>>>> + * @return >>>>> + * - (1) if the queue is hairpin queue, 0 otherwise. >>>>> + */ >>>>> +int >>>>> +rte_eth_dev_is_rx_hairpin_queue(struct rte_eth_dev *dev, uint16_t >>>> queue_id); >>>>> + >>>>> +/** >>>>> + * @internal >>>>> + * Check if the selected Tx queue is hairpin queue. >>>>> + * >>>>> + * @param dev >>>>> + * Pointer to the selected device. >>>>> + * @param queue_id >>>>> + * The selected queue. >>>>> + * >>>>> + * @return >>>>> + * - (1) if the queue is hairpin queue, 0 otherwise. >>>>> + */ >>>>> +int >>>>> +rte_eth_dev_is_tx_hairpin_queue(struct rte_eth_dev *dev, uint16_t >>>> queue_id); >>>>> + >>>>> +/** >>>> >>>> If these functions are internal why there are in 'rte_ethdev.h' ? >>>> >>>>> * >>>>> * Retrieve a burst of input packets from a receive queue of an Ethernet >>>>> * device. The retrieved packets are stored in *rte_mbuf* structures whose >>>>> @@ -4251,6 +4400,11 @@ int rte_eth_dev_adjust_nb_rx_tx_desc(uint16_t >>>> port_id, >>>>> RTE_ETHDEV_LOG(ERR, "Invalid RX queue_id=%u\n", >>>> queue_id); >>>>> return 0; >>>>> } >>>>> + if (rte_eth_dev_is_rx_hairpin_queue(dev, queue_id)) { >>>>> + RTE_ETHDEV_LOG(ERR, "Rx burst failed, queue_id=%u is >>>> hairpin queue\n", >>>>> + queue_id); >>>>> + return 0; >>>>> + } >>>>> #endif >>>>> nb_rx = (*dev->rx_pkt_burst)(dev->data->rx_queues[queue_id], >>>>> rx_pkts, nb_pkts); >>>>> @@ -4517,6 +4671,11 @@ static inline int >>>> rte_eth_tx_descriptor_status(uint16_t port_id, >>>>> RTE_ETHDEV_LOG(ERR, "Invalid TX queue_id=%u\n", >>>> queue_id); >>>>> return 0; >>>>> } >>>>> + if (rte_eth_dev_is_tx_hairpin_queue(dev, queue_id)) { >>>>> + RTE_ETHDEV_LOG(ERR, "Tx burst failed, queue_id=%u is >>>> hairpin queue\n", >>>>> + queue_id); >>>>> + return 0; >>>>> + } >>>>> #endif >>>> >>>> Hi Ori, >>>> >>>> These are causing build error, thanks Jerin for catching, because they are >>>> internal and called by a public static inline API, so whoever calls >>>> 'rte_eth_rx/tx_burst()' APIs in the shared build, can't find >>>> 'rte_eth_dev_is_rx/tx_hairpin_queue()' functions [1], >>>> >>>> as far as I can see there are two options: >>>> 1) Remove these checks >>>> 2) Make 'rte_eth_dev_is_rx/tx_hairpin_queue()' public API instead of internal >>>> >>>> If there is a value to make 'rte_eth_dev_is_rx/tx_hairpin_queue()' public API >>>> we >>>> should go with (2) else (1). >>>> >>> >>> I think we can skip the tests, >>> But it was Andrew request so we must get is response. >>> It was also his empathies that they should be internal. >> >> It is important for me to keep rte_eth_dev_state internal and >> few patches ago rte_eth_dev_is_rx_hairpin_queue() was inline. > > Are you saying you don't want to option to make > 'rte_eth_dev_is_rx_hairpin_queue()' static inline because it will force the > 'RTE_ETH_QUEUE_STATE_xxx' being public? Yes. >> I'm OK to make the function experimental or keep it internal >> (no API/ABI stability requirements) but externally visible (in .map). > > I think we can't do this, add a function deceleration to the public header file > and add it to the .map file but keep it internal. Instead we can make it a > proper API and it should be experimental at least first release. We have discussed similar thing with Olivier recently [1]. [1] http://inbox.dpdk.org/dev/20191030142938.bpi4txlrebqfq7uw@platinum/ > The question above was do we need this API, or instead should remove the check > from rx/tx_burst APIs? I think these checks are useful to ensure that these functions are not used for hairpin queues. At least to catch it with debug enabled. >>>> [1] >>>> /usr/bin/ld: rte_event_eth_rx_adapter.o: in function `rxa_eth_rx': >>>> rte_event_eth_rx_adapter.c:(.text+0x1728): undefined reference to >>>> `rte_eth_dev_is_rx_hairpin_queue' >>>> /usr/bin/ld: rte_event_eth_rx_adapter.o: in function `rxa_service_func': >>>> rte_event_eth_rx_adapter.c:(.text+0x22ab): undefined reference to >>>> `rte_eth_dev_is_rx_hairpin_queue' >>>> /usr/bin/ld: rte_event_eth_tx_adapter.o: in function `txa_service_buffer_retry': >>>> rte_event_eth_tx_adapter.c:(.text+0xa43): undefined reference to >>>> `rte_eth_dev_is_tx_hairpin_queue' >>>> /usr/bin/ld: rte_event_eth_tx_adapter.o: in function `txa_service_func': >>>> rte_event_eth_tx_adapter.c:(.text+0xe7d): undefined reference to >>>> `rte_eth_dev_is_tx_hairpin_queue' >>>> /usr/bin/ld: rte_event_eth_tx_adapter.c:(.text+0x1155): undefined reference to >>>> `rte_eth_dev_is_tx_hairpin_queue' >>>> collect2: error: ld returned 1 exit status >>