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 78DA1A0353; Tue, 5 Nov 2019 14:34:37 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 8FB451B948; Tue, 5 Nov 2019 14:34:36 +0100 (CET) Received: from dispatch1-us1.ppe-hosted.com (dispatch1-us1.ppe-hosted.com [148.163.129.52]) by dpdk.org (Postfix) with ESMTP id 4E5BD5B3E for ; Tue, 5 Nov 2019 14:34:35 +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-us5.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTPS id 626EBA40058; Tue, 5 Nov 2019 13:34:14 +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 13:34:06 +0000 To: Thomas Monjalon , Ori Kam , Ferruh Yigit CC: John McNamara , Marko Kovacevic , "dev@dpdk.org" , "jingjing.wu@intel.com" , "stephen@networkplumber.org" , Jerin Jacob References: <1569479349-36962-1-git-send-email-orika@mellanox.com> <3424559.MG90hyF9n4@xps> <2162780.py8TNoPOkV@xps> 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 4XfO/EAUuEq5AemUG5DDTM87g7Lp4eT9gMZB6P+rJwWPNWTiV3L7Cn+fO+l9mTPnOqdzBgDe OaulKiNSft1o0DY4bGzOmM2ad2cZt0jfnbMPMTE9zsr6+RFa+M8Ct20o6U1MUE4vP6veErMK of4kZ8PdoMM+Sq1hxMPNtlcVBSP9xMmdSZPlfDYI5VWosOceEcz7XZdjBJKdwKuz70V7eac4 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<83165cff-b6d5-abe8-c14b-913424816b6a@solarflare.com> Date: Tue, 5 Nov 2019 16:34:03 +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: <2162780.py8TNoPOkV@xps> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Content-Language: en-GB 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-12.240000-8.000000-10 X-TMASE-MatchedRID: 9d2LtCNB3NLmLzc6AOD8DfHkpkyUphL96VTG9cZxEjKb+QNMM5ikGnWC d6QvVzbehfYhdLL4UvgidYoCHucQNUkCYvX2c9GkimHWEC28pk1MkOX0UoduuVLDlDlwWhcN/ns 36INbhdN40du7ua0+ItTWDiU7V0XtpL3SGmtOffGK5Jq39CIIv2PIqSS8BzKhVI7KaIl9NheEeE SyuRtYoTHk8ILJKQ1lbTomdwlDQIx2FusXbyebzDMvozJIQnRWy4JitPdZ5k2+fWK8N2kAh72zz tJVQeFb0s/89yurhV5+5/yKhhL7sfFRSoBCNktyboe6sMfg+k8weLVh3LZYSHmvr3EYUSdAJvoT rW/eYFzcfOMNoN/HOAXdzKhNc1nSEKLEnEh6peS/W88A/PbYWQPfn+3SI1uE3XG7+6sXkPxrcDq Fw27ycCv0u9JM5n7+c/GRf2prLv9byxAy8+P9fLSlePUaQB977WUu3l5O6eCbKItl61J/ycnjLT A/UDoAoTCA5Efyn8CNo+PRbWqfRDsAVzN+Ov/s9SOsYbEzYcVl9tnGn+kr8qLUoedpFQpDb2EOs GztkEsNLxE99AFQJg== X-TM-AS-User-Approved-Sender: Yes X-TM-AS-User-Blocked-Sender: No X-TMASE-Result: 10--12.240000-8.000000 X-TMASE-Version: SMEX-12.5.0.1300-8.5.1010-25022.003 X-MDID: 1572960874-wqmIbhsILxf9 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 4:27 PM, Thomas Monjalon wrote: > 05/11/2019 14:23, Ori Kam: >> From: Thomas Monjalon >>> 05/11/2019 13:53, Andrew Rybchenko: >>>> On 11/5/19 3:51 PM, Thomas Monjalon wrote: >>>>> 05/11/2019 13:27, Andrew Rybchenko: >>>>>> On 11/5/19 3:23 PM, Ferruh Yigit wrote: >>>>>>> On 11/5/2019 12:12 PM, Andrew Rybchenko wrote: >>>>>>>> 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: >>>>> >>>>>> From: Ferruh Yigit >>>>>>>>>>>>> /** >>>>>>>>>>>>> + * @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); >>>>> [...] >>>>>>>>>>>> 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. >>>>>>> +1 >>>>>>> >>>>>>>>>> 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. > Using an experimental function in an inline API may propagate the > experimental flag further. > >> Moving the API to experimental results in the following error: >> error: 'rte_eth_dev_is_rx_hairpin_queue' is deprecated (declared at /.autodirect/mtrswgwork/orika/pegasus04_share/dpdk.org/x86_64-native-linuxapp-gcc/include/rte_ethdev.h:4276): Symbol is not yet part of stable ABI [-Werror=deprecated-declarations] >> >> I suggest that we remove the checks, in any case this checks are only on debug mode, and when using data path the user must be very careful and what he >> is doing. > I agree it seems better to remove these checks for now. > We can decide to re-introduce them later as non-experimental. OK