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[ { "id": 116432, "web_url": "https://patches.dpdk.org/comment/116432/", "msgid": "<87f4dd1f-0882-1dc3-0804-588ab7eb407e@intel.com>", "list_archive_url": "https://inbox.dpdk.org/dev/87f4dd1f-0882-1dc3-0804-588ab7eb407e@intel.com", "date": "2020-07-21T17:25:14", "subject": "Re: [dpdk-dev] [PATCH v2] net/vhost: support queue update", "submitter": { "id": 324, "url": "https://patches.dpdk.org/api/people/324/?format=api", "name": "Ferruh Yigit", "email": "ferruh.yigit@intel.com" }, "content": "On 7/21/2020 5:38 PM, Matan Azrad wrote:\n> The commit below changed the readiness condition of vhost device to fix\n> multi-queues issues showed with QEMU versions.\n> \n> Now, the vhost device is ready when the first queue-pair is ready.\n> When more queues are being ready, the queue state callback will be\n> triggered to notify the vhost manager.\n> \n> In case of Rx interrupt configuration, the vhost driver set the\n> kickfd queue file descriptor in order to be notified on Rx traffic.\n> \n> So, when queue becomes ready, the kickfd may be changed and should be\n> updated in the Rx interrupt structure.\n> \n> Update kickfd when the queue state callback is invoked.\n> Also update event notification when it is enabled by the user.\n> \n> Fixes: d0fcc38f5fa4 (\"vhost: improve device readiness notifications\")\n> \n> Signed-off-by: Matan Azrad <matan@mellanox.com>\n\nSuggested-by: Marvin Liu <yong.liu@intel.com>\n\n\nThis patch addresses a ~%20 performance drop in vhost reported with -rc1.\n\nAlthough it is missing component maintainers ack, I will merge it relying on\noffline discussion Maxime, Matan, Marvin & Chenbo involved, to address the\nperformance issue observed in -rc2.\nHopefully won't but if we observe issues with this patch, there will be time to\naddress it before -rc3, I believe it is safer/better to merge it for -rc2 than\nholding this fix till -rc3, at least it can be verified this way as part of -rc2.\n\nApplied to dpdk-next-net/master, thanks.", "headers": { "Return-Path": "<dev-bounces@dpdk.org>", "X-Original-To": "patchwork@inbox.dpdk.org", "Delivered-To": "patchwork@inbox.dpdk.org", "Received": [ "from dpdk.org (dpdk.org [92.243.14.124])\n\tby inbox.dpdk.org (Postfix) with ESMTP id 1A81DA0526;\n\tTue, 21 Jul 2020 19:25:21 +0200 (CEST)", "from [92.243.14.124] (localhost [127.0.0.1])\n\tby dpdk.org (Postfix) with ESMTP id 9F6981BFEF;\n\tTue, 21 Jul 2020 19:25:19 +0200 (CEST)", "from mga12.intel.com (mga12.intel.com [192.55.52.136])\n by dpdk.org (Postfix) with ESMTP id 88C65E07\n for <dev@dpdk.org>; Tue, 21 Jul 2020 19:25:17 +0200 (CEST)", "from fmsmga004.fm.intel.com ([10.253.24.48])\n by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384;\n 21 Jul 2020 10:25:16 -0700", "from fyigit-mobl.ger.corp.intel.com (HELO [10.252.23.236])\n ([10.252.23.236])\n by fmsmga004.fm.intel.com with ESMTP; 21 Jul 2020 10:25:15 -0700" ], "IronPort-SDR": [ "\n Kd0Si/JxQ2KeMDHTWAjMGDefBw7841CN9MjF6MQvv84bo0Hfe7jo9rU5nnFRc+NQ/qyNyNHeBQ\n FGas1DagHsNg==", "\n 6vD4lP0HjJ6xFFy6yfihMsbkG/OhZYCXLm0p/jpVXsJhF3F/rrWP73J05HWzNmJ+t6ywkJVcqw\n jKKWZZgmil8Q==" ], "X-IronPort-AV": [ "E=McAfee;i=\"6000,8403,9689\"; a=\"129758531\"", "E=Sophos;i=\"5.75,379,1589266800\"; d=\"scan'208\";a=\"129758531\"", "E=Sophos;i=\"5.75,379,1589266800\"; d=\"scan'208\";a=\"310319844\"" ], "X-Amp-Result": "SKIPPED(no attachment in message)", "X-Amp-File-Uploaded": "False", "X-ExtLoop1": "1", "To": "Matan Azrad <matan@mellanox.com>,\n Maxime Coquelin <maxime.coquelin@redhat.com>", "Cc": "dev@dpdk.org, chenbo.xia@intel.com, david.marchand@redhat.com,\n thomas@monjalon.net, Marvin Liu <yong.liu@intel.com>", "References": "<1595175493-21497-1-git-send-email-matan@mellanox.com>\n <20200721163816.15057-1-matan@mellanox.com>", "From": "Ferruh Yigit <ferruh.yigit@intel.com>", "Autocrypt": "addr=ferruh.yigit@intel.com; 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charset=utf-8", "Content-Language": "en-US", "Content-Transfer-Encoding": "8bit", "Subject": "Re: [dpdk-dev] [PATCH v2] net/vhost: support queue update", "X-BeenThere": "dev@dpdk.org", "X-Mailman-Version": "2.1.15", "Precedence": "list", "List-Id": "DPDK patches and discussions <dev.dpdk.org>", "List-Unsubscribe": "<https://mails.dpdk.org/options/dev>,\n <mailto:dev-request@dpdk.org?subject=unsubscribe>", "List-Archive": "<http://mails.dpdk.org/archives/dev/>", "List-Post": "<mailto:dev@dpdk.org>", "List-Help": "<mailto:dev-request@dpdk.org?subject=help>", "List-Subscribe": "<https://mails.dpdk.org/listinfo/dev>,\n <mailto:dev-request@dpdk.org?subject=subscribe>", "Errors-To": "dev-bounces@dpdk.org", "Sender": "\"dev\" <dev-bounces@dpdk.org>" }, "addressed": null }, { "id": 116435, "web_url": "https://patches.dpdk.org/comment/116435/", "msgid": "<556ff867-3a34-f81d-8acb-8630adaedf38@redhat.com>", "list_archive_url": "https://inbox.dpdk.org/dev/556ff867-3a34-f81d-8acb-8630adaedf38@redhat.com", "date": "2020-07-21T17:27:45", "subject": "Re: [dpdk-dev] [PATCH v2] net/vhost: support queue update", "submitter": { "id": 512, "url": "https://patches.dpdk.org/api/people/512/?format=api", "name": "Maxime Coquelin", "email": "maxime.coquelin@redhat.com" }, "content": "Thanks Matan for the fix.\n\nOn 7/21/20 6:38 PM, Matan Azrad wrote:\n> The commit below changed the readiness condition of vhost device to fix\n> multi-queues issues showed with QEMU versions.\n> \n> Now, the vhost device is ready when the first queue-pair is ready.\n> When more queues are being ready, the queue state callback will be\n> triggered to notify the vhost manager.\n> \n> In case of Rx interrupt configuration, the vhost driver set the\n> kickfd queue file descriptor in order to be notified on Rx traffic.\n> \n> So, when queue becomes ready, the kickfd may be changed and should be\n> updated in the Rx interrupt structure.\n> \n> Update kickfd when the queue state callback is invoked.\n> Also update event notification when it is enabled by the user.\n> \n> Fixes: d0fcc38f5fa4 (\"vhost: improve device readiness notifications\")\n> \n> Signed-off-by: Matan Azrad <matan@mellanox.com>\n> ---\n> drivers/net/vhost/rte_eth_vhost.c | 49 +++++++++++++++++++++++++++++++\n> 1 file changed, 49 insertions(+)\n> \n> diff --git a/drivers/net/vhost/rte_eth_vhost.c b/drivers/net/vhost/rte_eth_vhost.c\n> index 9fbf39f66b..bbf79b2c0e 100644\n> --- a/drivers/net/vhost/rte_eth_vhost.c\n> +++ b/drivers/net/vhost/rte_eth_vhost.c\n> @@ -94,6 +94,7 @@ struct vhost_queue {\n> \tstruct rte_mempool *mb_pool;\n> \tuint16_t port;\n> \tuint16_t virtqueue_id;\n> +\tbool intr_en;\n> \tstruct vhost_stats stats;\n> };\n> \n> @@ -546,6 +547,8 @@ eth_rxq_intr_enable(struct rte_eth_dev *dev, uint16_t qid)\n> \trte_vhost_enable_guest_notification(vq->vid, (qid << 1) + 1, 1);\n> \trte_wmb();\n> \n> +\tvq->intr_en = true;\n> +\n> \treturn ret;\n> }\n> \n> @@ -571,6 +574,8 @@ eth_rxq_intr_disable(struct rte_eth_dev *dev, uint16_t qid)\n> \trte_vhost_enable_guest_notification(vq->vid, (qid << 1) + 1, 0);\n> \trte_wmb();\n> \n> +\tvq->intr_en = false;\n> +\n> \treturn 0;\n> }\n> \n> @@ -830,6 +835,45 @@ destroy_device(int vid)\n> \t_rte_eth_dev_callback_process(eth_dev, RTE_ETH_EVENT_INTR_LSC, NULL);\n> }\n> \n> +static int\n> +vring_conf_update(int vid, struct rte_eth_dev *eth_dev, uint16_t vring_id)\n> +{\n> +\tstruct rte_eth_conf *dev_conf = &eth_dev->data->dev_conf;\n> +\tstruct pmd_internal *internal = eth_dev->data->dev_private;\n> +\tstruct rte_vhost_vring vring;\n> +\tstruct vhost_queue *vq;\n> +\tint rx_idx = vring_id % 2 ? (vring_id - 1) >> 1 : -1;\n> +\tint ret = 0;\n> +\n> +\t/*\n> +\t * The vring kickfd may be changed after the new device notification.\n> +\t * Update it when the vring state is updated.\n> +\t */\n> +\tif (rx_idx >= 0 && rx_idx < eth_dev->data->nb_rx_queues &&\n> +\t rte_atomic32_read(&internal->dev_attached) &&\n> +\t rte_atomic32_read(&internal->started) &&\n> +\t dev_conf->intr_conf.rxq) {\n\nI am not sure we need to filter on rxq, we could just call\nrte_vhost_enable_guest_notification(). It would be disabled for tx\nqueues, as it is done in the .new_device callback so harmless and this\nfunction would be simpler.\n\nBut I think your code work, so we should get it in -rc2 to get proper\ntesting:\n\nReviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>\n\nThanks,\nMaxime\n\n> +\t\tvq = eth_dev->data->rx_queues[rx_idx];\n> +\t\tret = rte_vhost_get_vhost_vring(vid, vring_id, &vring);\n> +\t\tif (!ret) {\n> +\t\t\tif (vring.kickfd !=\n> +\t\t\t eth_dev->intr_handle->efds[rx_idx]) {\n> +\t\t\t\tVHOST_LOG(INFO,\n> +\t\t\t\t\t \"kickfd for rxq-%d was changed.\\n\",\n> +\t\t\t\t\t rx_idx);\n> +\t\t\t\teth_dev->intr_handle->efds[rx_idx] =\n> +\t\t\t\t\t\t\t\t vring.kickfd;\n> +\t\t\t}\n> +\n> +\t\t\trte_vhost_enable_guest_notification(vid, vring_id,\n> +\t\t\t\t\t\t\t vq->intr_en);\n> +\t\t\trte_wmb();\n> +\t\t}\n> +\t}\n> +\n> +\treturn ret;\n> +}\n> +\n> static int\n> vring_state_changed(int vid, uint16_t vring, int enable)\n> {\n> @@ -848,6 +892,11 @@ vring_state_changed(int vid, uint16_t vring, int enable)\n> \teth_dev = list->eth_dev;\n> \t/* won't be NULL */\n> \tstate = vring_states[eth_dev->data->port_id];\n> +\n> +\tif (enable && vring_conf_update(vid, eth_dev, vring))\n> +\t\tVHOST_LOG(INFO, \"Failed to update vring-%d configuration.\\n\",\n> +\t\t\t (int)vring);\n> +\n> \trte_spinlock_lock(&state->lock);\n> \tif (state->cur[vring] == enable) {\n> \t\trte_spinlock_unlock(&state->lock);\n>", "headers": { "Return-Path": "<dev-bounces@dpdk.org>", "X-Original-To": "patchwork@inbox.dpdk.org", "Delivered-To": "patchwork@inbox.dpdk.org", "Received": [ "from dpdk.org (dpdk.org [92.243.14.124])\n\tby inbox.dpdk.org (Postfix) with ESMTP id 4179AA0526;\n\tTue, 21 Jul 2020 19:27:59 +0200 (CEST)", "from [92.243.14.124] (localhost [127.0.0.1])\n\tby dpdk.org (Postfix) with ESMTP id 251BE1BFEF;\n\tTue, 21 Jul 2020 19:27:59 +0200 (CEST)", "from us-smtp-delivery-1.mimecast.com (us-smtp-2.mimecast.com\n [205.139.110.61]) by dpdk.org (Postfix) with ESMTP id D9698E07\n for <dev@dpdk.org>; Tue, 21 Jul 2020 19:27:57 +0200 (CEST)", "from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com\n [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id\n us-mta-334-UIIkMMz5MViF2j4U7s9Uew-1; Tue, 21 Jul 2020 13:27:53 -0400", "from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com\n [10.5.11.23])\n (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))\n (No client certificate requested)\n by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 46AE9800468;\n Tue, 21 Jul 2020 17:27:52 +0000 (UTC)", "from [10.36.110.35] (unknown [10.36.110.35])\n by smtp.corp.redhat.com (Postfix) with ESMTPS id 011B42B4DB;\n Tue, 21 Jul 2020 17:27:47 +0000 (UTC)" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com;\n s=mimecast20190719; t=1595352477;\n h=from:from:reply-to:subject:subject:date:date:message-id:message-id:\n to:to:cc:cc:mime-version:mime-version:content-type:content-type:\n content-transfer-encoding:content-transfer-encoding:\n in-reply-to:in-reply-to:references:references:autocrypt:autocrypt;\n bh=GdzDmq8YuX3QP+pKiRTTRHIn+s8DflEzEVATsOL/mx8=;\n b=c0FGkLbDc/D/R/ETRNTOOfbOiDNBErKDAxYa7rOypWz4Ph0vJgk0j2mRNB7Jzpdm1aMXoE\n oKvSahZyinCHX/F88Ol9ft/4IsIdZCBglO29lhATmCXDz7Aq2AZAV6LyaUDdOs87D7npw2\n SUJ2npOshYayWBhOltsv03yAwbAbUAg=", "X-MC-Unique": "UIIkMMz5MViF2j4U7s9Uew-1", "To": "Matan Azrad <matan@mellanox.com>", "Cc": "dev@dpdk.org, Ferruh Yigit <ferruh.yigit@intel.com>,\n chenbo.xia@intel.com, david.marchand@redhat.com, thomas@monjalon.net", "References": "<1595175493-21497-1-git-send-email-matan@mellanox.com>\n <20200721163816.15057-1-matan@mellanox.com>", "From": "Maxime Coquelin <maxime.coquelin@redhat.com>", "Autocrypt": "addr=maxime.coquelin@redhat.com; keydata=\n mQINBFOEQQIBEADjNLYZZqghYuWv1nlLisptPJp+TSxE/KuP7x47e1Gr5/oMDJ1OKNG8rlNg\n kLgBQUki3voWhUbMb69ybqdMUHOl21DGCj0BTU3lXwapYXOAnsh8q6RRM+deUpasyT+Jvf3a\n gU35dgZcomRh5HPmKMU4KfeA38cVUebsFec1HuJAWzOb/UdtQkYyZR4rbzw8SbsOemtMtwOx\n YdXodneQD7KuRU9IhJKiEfipwqk2pufm2VSGl570l5ANyWMA/XADNhcEXhpkZ1Iwj3TWO7XR\n uH4xfvPl8nBsLo/EbEI7fbuUULcAnHfowQslPUm6/yaGv6cT5160SPXT1t8U9QDO6aTSo59N\n jH519JS8oeKZB1n1eLDslCfBpIpWkW8ZElGkOGWAN0vmpLfdyiqBNNyS3eGAfMkJ6b1A24un\n /TKc6j2QxM0QK4yZGfAxDxtvDv9LFXec8ENJYsbiR6WHRHq7wXl/n8guyh5AuBNQ3LIK44x0\n KjGXP1FJkUhUuruGyZsMrDLBRHYi+hhDAgRjqHgoXi5XGETA1PAiNBNnQwMf5aubt+mE2Q5r\n qLNTgwSo2dpTU3+mJ3y3KlsIfoaxYI7XNsPRXGnZi4hbxmeb2NSXgdCXhX3nELUNYm4ArKBP\n LugOIT/zRwk0H0+RVwL2zHdMO1Tht1UOFGfOZpvuBF60jhMzbQARAQABtCxNYXhpbWUgQ29x\n dWVsaW4gPG1heGltZS5jb3F1ZWxpbkByZWRoYXQuY29tPokCOAQTAQIAIgUCV3u/5QIbAwYL\n CQgHAwIGFQgCCQoLBBYCAwECHgECF4AACgkQyjiNKEaHD4ma2g/+P+Hg9WkONPaY1J4AR7Uf\n kBneosS4NO3CRy0x4WYmUSLYMLx1I3VH6SVjqZ6uBoYy6Fs6TbF6SHNc7QbB6Qjo3neqnQR1\n 71Ua1MFvIob8vUEl3jAR/+oaE1UJKrxjWztpppQTukIk4oJOmXbL0nj3d8dA2QgHdTyttZ1H\n xzZJWWz6vqxCrUqHU7RSH9iWg9R2iuTzii4/vk1oi4Qz7y/q8ONOq6ffOy/t5xSZOMtZCspu\n Mll2Szzpc/trFO0pLH4LZZfz/nXh2uuUbk8qRIJBIjZH3ZQfACffgfNefLe2PxMqJZ8mFJXc\n RQO0ONZvwoOoHL6CcnFZp2i0P5ddduzwPdGsPq1bnIXnZqJSl3dUfh3xG5ArkliZ/++zGF1O\n wvpGvpIuOgLqjyCNNRoR7cP7y8F24gWE/HqJBXs1qzdj/5Hr68NVPV1Tu/l2D1KMOcL5sOrz\n 2jLXauqDWn1Okk9hkXAP7+0Cmi6QwAPuBT3i6t2e8UdtMtCE4sLesWS/XohnSFFscZR6Vaf3\n gKdWiJ/fW64L6b9gjkWtHd4jAJBAIAx1JM6xcA1xMbAFsD8gA2oDBWogHGYcScY/4riDNKXi\n lw92d6IEHnSf6y7KJCKq8F+Jrj2BwRJiFKTJ6ChbOpyyR6nGTckzsLgday2KxBIyuh4w+hMq\n TGDSp2rmWGJjASq5Ag0EVPSbkwEQAMkaNc084Qvql+XW+wcUIY+Dn9A2D1gMr2BVwdSfVDN7\n 0ZYxo9PvSkzh6eQmnZNQtl8WSHl3VG3IEDQzsMQ2ftZn2sxjcCadexrQQv3Lu60Tgj7YVYRM\n H+fLYt9W5YuWduJ+FPLbjIKynBf6JCRMWr75QAOhhhaI0tsie3eDsKQBA0w7WCuPiZiheJaL\n 4MDe9hcH4rM3ybnRW7K2dLszWNhHVoYSFlZGYh+MGpuODeQKDS035+4H2rEWgg+iaOwqD7bg\n CQXwTZ1kSrm8NxIRVD3MBtzp9SZdUHLfmBl/tLVwDSZvHZhhvJHC6Lj6VL4jPXF5K2+Nn/Su\n CQmEBisOmwnXZhhu8ulAZ7S2tcl94DCo60ReheDoPBU8PR2TLg8rS5f9w6mLYarvQWL7cDtT\n d2eX3Z6TggfNINr/RTFrrAd7NHl5h3OnlXj7PQ1f0kfufduOeCQddJN4gsQfxo/qvWVB7PaE\n 1WTIggPmWS+Xxijk7xG6x9McTdmGhYaPZBpAxewK8ypl5+yubVsE9yOOhKMVo9DoVCjh5To5\n aph7CQWfQsV7cd9PfSJjI2lXI0dhEXhQ7lRCFpf3V3mD6CyrhpcJpV6XVGjxJvGUale7+IOp\n sQIbPKUHpB2F+ZUPWds9yyVxGwDxD8WLqKKy0WLIjkkSsOb9UBNzgRyzrEC9lgQ/ABEBAAGJ\n Ah8EGAECAAkFAlT0m5MCGwwACgkQyjiNKEaHD4nU8hAAtt0xFJAy0sOWqSmyxTc7FUcX+pbD\n KVyPlpl6urKKMk1XtVMUPuae/+UwvIt0urk1mXi6DnrAN50TmQqvdjcPTQ6uoZ8zjgGeASZg\n jj0/bJGhgUr9U7oG7Hh2F8vzpOqZrdd65MRkxmc7bWj1k81tOU2woR/Gy8xLzi0k0KUa8ueB\n iYOcZcIGTcs9CssVwQjYaXRoeT65LJnTxYZif2pfNxfINFzCGw42s3EtZFteczClKcVSJ1+L\n +QUY/J24x0/ocQX/M1PwtZbB4c/2Pg/t5FS+s6UB1Ce08xsJDcwyOPIH6O3tccZuriHgvqKP\n yKz/Ble76+NFlTK1mpUlfM7PVhD5XzrDUEHWRTeTJSvJ8TIPL4uyfzhjHhlkCU0mw7Pscyxn\n DE8G0UYMEaNgaZap8dcGMYH/96EfE5s/nTX0M6MXV0yots7U2BDb4soLCxLOJz4tAFDtNFtA\n wLBhXRSvWhdBJZiig/9CG3dXmKfi2H+wdUCSvEFHRpgo7GK8/Kh3vGhgKmnnxhl8ACBaGy9n\n fxjSxjSO6rj4/MeenmlJw1yebzkX8ZmaSi8BHe+n6jTGEFNrbiOdWpJgc5yHIZZnwXaW54QT\n UhhSjDL1rV2B4F28w30jYmlRmm2RdN7iCZfbyP3dvFQTzQ4ySquuPkIGcOOHrvZzxbRjzMx1\n Mwqu3GQ=", "Message-ID": "<556ff867-3a34-f81d-8acb-8630adaedf38@redhat.com>", "Date": "Tue, 21 Jul 2020 19:27:45 +0200", "User-Agent": "Mozilla/5.0 (X11; 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