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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A5916C5479D for ; Mon, 9 Jan 2023 13:34:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-Type: Content-Transfer-Encoding:References:In-Reply-To:Message-Id:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=7r4JRb8h0M2ex9ZpGujHho5JCUi2y59yV2W6/CnTvKQ=; b=SqDXTzgPE04EGcyzeBEjKtKMo8 QqVSK8D22EOHJssvAxIYAUD2e5WDwr2wy1QtACn1OtBSWJPicvtafs3rKc4N1zjkyFiBDBAaRzEX5 rK1XNmcWeZ3TmTcWBnGaEeW41ADqknlONb0iQXMDGv9cwTPeP623lVeYQkvHuthDnsw1mZThx2+4s AhVpI+0RJXyS0TxrVYqgoTrkz8bPCz5J0Qw8BfESAZd08BJ4qOQkZaxk6AnULonf75K0vTCVWgluc d19MbfSjM7w+qXOGmYsr4K07uqyAy5nnRey/TDGFzgFARRJI011q5pd4rSlohTnyCNWuAtYCwjEg9 7Ckx4bCw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pEsHz-001cwF-4y; Mon, 09 Jan 2023 13:34:11 +0000 Received: from mail-mw2nam10on2080.outbound.protection.outlook.com ([40.107.94.80] helo=NAM10-MW2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pEsGE-001bxn-D8 for linux-nvme@lists.infradead.org; Mon, 09 Jan 2023 13:32:24 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=TXzYv3amj47igH5mSLy7CFP8Ji/f3cskbY8tGE1wKOYDzNA6zTk9uTvxPFr3aNQVUd6P19rOlhzYBh/w7zM/DuUJjLl9mpBQRBi6tMeANJrDZUVwbLx1gna4etbkeMAxHQn6luTqVNQs79+ifEYY5kB/A5EIwnhCX7NeO/XOq9vYBlddZgiagq2K46oX3t9LVIOrDvvV6/NkR1WSPsfevUhsfLsxevUMwWUF+mt3urKLgD8J+XpeRVmKuhVByOFxc9TzZKTAJjwMlYH0ctvOPJenjYUtjvhN0qcwBUcyjntSb/eVNcrO3ajQZV31tGBcJaj0WcKX7H0PnHjGeDrw3A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=7r4JRb8h0M2ex9ZpGujHho5JCUi2y59yV2W6/CnTvKQ=; b=niiULNpLXTyTaFYhqE2MzmWHwBFOku2KHvUNr4GJRAHe2YALhEsriO5Ss6Daf5RI0BxCBIEat4xFqDL5KOK+iLNfFzSZDoLSJWQcf/bnD9R03yHHj2Yu0KfvZFnHjGXJUkcN2rCQZI+rNp87olGxAaoMtUjs5g2aH+Mh902Ypcp3gC7R/cZhnOYk2Lbg/J49uZufCCUWU6/vCMWd1EFpAHOgsLokKkm8rwAaby8nKfL6VsctsTaFoNI5nvIy6MqdBG1i+GcTmFJ5aYwx5xRWeXoHKkLwgOZe7FQHt3G49Ax7y/h7k+eDM/vGZIbBIUlWLpfOwizlAjyLsVntmxrxhw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nvidia.com; dmarc=pass action=none header.from=nvidia.com; dkim=pass header.d=nvidia.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=7r4JRb8h0M2ex9ZpGujHho5JCUi2y59yV2W6/CnTvKQ=; b=NOAQpoBn05AqraNtkscrW0LuUOmW/ik0QMX8lZJid+E1QOb043XWV4Hkqa7CQ/UU6AziEFEOy81rbX5hVAtP/ZijtbH+uQipaiuZjwrAmuC0rA368XTUSKTVW53uzeuHpA4Bcps0GWijwv0w36JOORahH7C6okuvPkx+sx32zev0KaoOIqABMBw7lQPGAjRITKO8Unv3MnCj3uUWqc54xMXp5AjCilRLaE4Vh9RUBx+F9pKGPquVEBzlB1ompWi2J8O2qOhbNz4VN+81vi2unCRhyPXEiTmXE5Vt4z9SvbXmxXVgnoyalmuSjGVkBivjJ3ptFM+WsX0nyBaohm2lPQ== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nvidia.com; Received: from SJ1PR12MB6075.namprd12.prod.outlook.com (2603:10b6:a03:45e::8) by CH0PR12MB5074.namprd12.prod.outlook.com (2603:10b6:610:e1::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5986.18; Mon, 9 Jan 2023 13:32:18 +0000 Received: from SJ1PR12MB6075.namprd12.prod.outlook.com ([fe80::6d66:a4bb:4018:3c70]) by SJ1PR12MB6075.namprd12.prod.outlook.com ([fe80::6d66:a4bb:4018:3c70%6]) with mapi id 15.20.5986.018; Mon, 9 Jan 2023 13:32:18 +0000 From: Aurelien Aptel To: linux-nvme@lists.infradead.org, netdev@vger.kernel.org, sagi@grimberg.me, hch@lst.de, kbusch@kernel.org, axboe@fb.com, chaitanyak@nvidia.com, davem@davemloft.net, kuba@kernel.org Cc: Boris Pismenny , Aurelien Aptel , aurelien.aptel@gmail.com, smalin@nvidia.com, malin1024@gmail.com, ogerlitz@nvidia.com, yorayz@nvidia.com Subject: [PATCH v8 08/25] nvme-tcp: Add DDP data-path Date: Mon, 9 Jan 2023 15:30:59 +0200 Message-Id: <20230109133116.20801-9-aaptel@nvidia.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20230109133116.20801-1-aaptel@nvidia.com> References: <20230109133116.20801-1-aaptel@nvidia.com> Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: FR3P281CA0057.DEUP281.PROD.OUTLOOK.COM (2603:10a6:d10:4b::8) To SJ1PR12MB6075.namprd12.prod.outlook.com (2603:10b6:a03:45e::8) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ1PR12MB6075:EE_|CH0PR12MB5074:EE_ X-MS-Office365-Filtering-Correlation-Id: 5621bcc6-82f3-4465-2d04-08daf245edb7 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:SJ1PR12MB6075.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230022)(4636009)(136003)(396003)(366004)(376002)(346002)(39860400002)(451199015)(1076003)(316002)(5660300002)(7416002)(26005)(6512007)(186003)(6486002)(478600001)(2616005)(41300700001)(54906003)(4326008)(66556008)(66946007)(66476007)(8676002)(8936002)(83380400001)(86362001)(36756003)(6666004)(107886003)(6506007)(38100700002)(2906002);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?VpHvYfHFhKurBflBG6VmPZlVN8e33AkG2uE62Z4IyP5jpzjsb807EtBGkH3o?= =?us-ascii?Q?a1xyyDCL/RBoFcy/D+G3oFMgWnq1TB1l2J3LZFdOfGQlw/dTXF4328UpLhQE?= =?us-ascii?Q?AGc7YCn5Kdb8oLDM0b7lIHM64EuV+I5v3N7GSlF7ONqs3AksokqVcIeFI89p?= =?us-ascii?Q?Yv4k+uHmjhFL+mIaSEQrUQoodIAsJz92+ZWG2xsLIlY7G9A6Ta9LHspkM/xO?= =?us-ascii?Q?AXb1IS5z/vq3USP35Py+CCXFQ/5U6kIx+WpxwK54xggGNpvwJUJK5iNrMsIP?= =?us-ascii?Q?PgfW2wQOITZhomZPisq9IV/EYULLk0aycw/CKW7HnrRtpYXvaT0HW3ds/n87?= =?us-ascii?Q?lkD4id/qCcrRJZLjU/9pJteIWGoLhRVFYWyfrtk3xmNm8csh8oSpK+gjTBMm?= =?us-ascii?Q?5zFeJZCLz/CgymoKn8WfTIzHoPzGHKeB+L26tX+sNvGAKxJYr1MXhyZDl3C9?= =?us-ascii?Q?MESkvfpWzgBUAgZdPVnI8g7m53Mcma/I+tYSC6YMYs2u5r4uLWDcjGnFthZ1?= =?us-ascii?Q?WTRP2AO/vc8hkOUcWJn86HcwFThQirT5anYCAsMZ/0/Akv1rTtifjD2hbIWm?= =?us-ascii?Q?WhQz7iJxwlwTq89NrJj7wMy28OrS7ggfiergMcfR/xdRN+JnUAlYMOO7Fhun?= =?us-ascii?Q?Mf6vD/DDLei5pNVcERBCvx/9xMy1r8H4MoFE56qb+WdAN8vE7qBWDTny7naW?= =?us-ascii?Q?NjdDxNs8IIV1U4bV6nzaKthnqIVdKphMsdBLFnWcXle29TiPtKC25SxT75Tx?= =?us-ascii?Q?G4ae84++UF6J2EMYpOoJ1e8133BUkQtlrxa/dsaJePfvfLGsvxVySMyGPyz1?= =?us-ascii?Q?j1h2dFBcP8HEAUeOnVwaEcJyWVPgW+91vRduYQ5xevzHEDUj67LFDJxh8b0x?= =?us-ascii?Q?KLioniBVEokanfeD4i/2nXFbBfomSnExoEI2tQyzQBroh3kSpgax5jBTgeVT?= =?us-ascii?Q?/dXD6m/CyOjyGl+E+0/Ckld+UrE40r0/ii4zCr2yJteXOZ6oC7lJMIx4Tfh9?= =?us-ascii?Q?qNze2zxYGbAJvP5J5sFgtPq+SYqVxAfhRVaVpH/3//7tq1YK+rQisQtL+ar1?= =?us-ascii?Q?FKKjKl6cOI8N8K0g7e/gZ6umdoAiWcNVa5W03vUHQnQ6jr06CKOg/WoVPH7z?= =?us-ascii?Q?UCLchIPwtQSc0bWvpUWAl35n8r01k9zaDm0mIBtqMDEUS1divFD58C339wUu?= =?us-ascii?Q?eJMwALrIr/V8KY1DlQ6q36jsS1ujyMBommmdbgCb5qXu2giSVBqnbuUcZUeh?= =?us-ascii?Q?qu8o+BttLnqvH7aJ1YKF9FuGUUxoBwovh3rBGgISq8rseIvKu4PZAPh8YqfM?= =?us-ascii?Q?a9ms42i3pq6W/yCtcTfvXjBHckbCgjrpDp7lzmY2jxS7jaRkS1IQUvE8Hg1u?= =?us-ascii?Q?pka1qHPIbQ5KLeH0MjSOvcn5lAaZdLG2rCdKxIlKMjtwqlT3pQyCkLm64VuE?= =?us-ascii?Q?BVxQt/TWxzeHnaHLkGkHFGpUgv8/rzRKcrCF0oLQPsCq0jpgjq9CuiznGoeQ?= =?us-ascii?Q?fexp31b9mFxSKZNR87F0qjG2Nh70wo3Ra9Auz0YGgZAUIw/vaYp1/HSeweT7?= =?us-ascii?Q?/Ibj6cDYWExfy6mZgTzbz6I+Epfhz/uPdzgev78G?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 5621bcc6-82f3-4465-2d04-08daf245edb7 X-MS-Exchange-CrossTenant-AuthSource: SJ1PR12MB6075.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Jan 2023 13:32:18.1997 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 2P3EOeJT5MR5M2Pq6xGnCSTw5Mu5OQzD3/MDrDzP+yR27KrdhxA3cDETV3YMX9cbmvru1YI/NQfLrZ8tO3r7IA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR12MB5074 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230109_053222_525227_56281D07 X-CRM114-Status: GOOD ( 17.46 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org From: Boris Pismenny Introduce the NVMe-TCP DDP data-path offload. Using this interface, the NIC hardware will scatter TCP payload directly to the BIO pages according to the command_id in the PDU. To maintain the correctness of the network stack, the driver is expected to construct SKBs that point to the BIO pages. The data-path interface contains two routines: tcp_ddp_setup/teardown. The setup provides the mapping from command_id to the request buffers, while the teardown removes this mapping. For efficiency, we introduce an asynchronous nvme completion, which is split between NVMe-TCP and the NIC driver as follows: NVMe-TCP performs the specific completion, while NIC driver performs the generic mq_blk completion. Signed-off-by: Boris Pismenny Signed-off-by: Ben Ben-Ishay Signed-off-by: Or Gerlitz Signed-off-by: Yoray Zack Signed-off-by: Shai Malin Signed-off-by: Aurelien Aptel Reviewed-by: Chaitanya Kulkarni --- drivers/nvme/host/tcp.c | 117 ++++++++++++++++++++++++++++++++++++++-- 1 file changed, 112 insertions(+), 5 deletions(-) diff --git a/drivers/nvme/host/tcp.c b/drivers/nvme/host/tcp.c index 3c35290d630f..718d968d94d6 100644 --- a/drivers/nvme/host/tcp.c +++ b/drivers/nvme/host/tcp.c @@ -101,6 +101,13 @@ struct nvme_tcp_request { size_t offset; size_t data_sent; enum nvme_tcp_send_state state; + +#ifdef CONFIG_ULP_DDP + bool offloaded; + struct ulp_ddp_io ddp; + __le16 ddp_status; + union nvme_result result; +#endif }; enum nvme_tcp_queue_flags { @@ -306,11 +313,75 @@ static bool nvme_tcp_ddp_query_limits(struct net_device *netdev, return true; } +static int nvme_tcp_req_map_sg(struct nvme_tcp_request *req, struct request *rq) +{ + int ret; + + req->ddp.sg_table.sgl = req->ddp.first_sgl; + ret = sg_alloc_table_chained(&req->ddp.sg_table, + blk_rq_nr_phys_segments(rq), + req->ddp.sg_table.sgl, SG_CHUNK_SIZE); + if (ret) + return -ENOMEM; + req->ddp.nents = blk_rq_map_sg(rq->q, rq, req->ddp.sg_table.sgl); + return 0; +} + static bool nvme_tcp_resync_request(struct sock *sk, u32 seq, u32 flags); +static void nvme_tcp_ddp_teardown_done(void *ddp_ctx); static const struct ulp_ddp_ulp_ops nvme_tcp_ddp_ulp_ops = { .resync_request = nvme_tcp_resync_request, + .ddp_teardown_done = nvme_tcp_ddp_teardown_done, }; +static void nvme_tcp_teardown_ddp(struct nvme_tcp_queue *queue, + struct request *rq) +{ + struct net_device *netdev = queue->ctrl->offloading_netdev; + struct nvme_tcp_request *req = blk_mq_rq_to_pdu(rq); + + netdev->netdev_ops->ulp_ddp_ops->ulp_ddp_teardown(netdev, queue->sock->sk, + &req->ddp, rq); + sg_free_table_chained(&req->ddp.sg_table, SG_CHUNK_SIZE); +} + +static void nvme_tcp_ddp_teardown_done(void *ddp_ctx) +{ + struct request *rq = ddp_ctx; + struct nvme_tcp_request *req = blk_mq_rq_to_pdu(rq); + + if (!nvme_try_complete_req(rq, req->ddp_status, req->result)) + nvme_complete_rq(rq); +} + +static int nvme_tcp_setup_ddp(struct nvme_tcp_queue *queue, u16 command_id, + struct request *rq) +{ + struct net_device *netdev = queue->ctrl->offloading_netdev; + struct nvme_tcp_request *req = blk_mq_rq_to_pdu(rq); + int ret; + + if (!(rq_data_dir(rq) == READ) || + queue->ctrl->offload_io_threshold > blk_rq_payload_bytes(rq)) + return 0; + + req->ddp.command_id = command_id; + ret = nvme_tcp_req_map_sg(req, rq); + if (ret) + return -ENOMEM; + + ret = netdev->netdev_ops->ulp_ddp_ops->ulp_ddp_setup(netdev, queue->sock->sk, + &req->ddp); + if (ret) { + sg_free_table_chained(&req->ddp.sg_table, SG_CHUNK_SIZE); + return ret; + } + + /* if successful, sg table is freed in nvme_tcp_teardown_ddp() */ + req->offloaded = true; + return 0; +} + static int nvme_tcp_offload_socket(struct nvme_tcp_queue *queue) { struct net_device *netdev = queue->ctrl->offloading_netdev; @@ -445,6 +516,12 @@ static inline bool is_netdev_ulp_offload_active(struct net_device *netdev) return false; } +static int nvme_tcp_setup_ddp(struct nvme_tcp_queue *queue, u16 command_id, + struct request *rq) +{ + return 0; +} + static int nvme_tcp_offload_socket(struct nvme_tcp_queue *queue) { return 0; @@ -731,6 +808,26 @@ static void nvme_tcp_error_recovery(struct nvme_ctrl *ctrl) queue_work(nvme_reset_wq, &to_tcp_ctrl(ctrl)->err_work); } +static void nvme_tcp_complete_request(struct request *rq, + __le16 status, + union nvme_result result, + __u16 command_id) +{ +#ifdef CONFIG_ULP_DDP + struct nvme_tcp_request *req = blk_mq_rq_to_pdu(rq); + + if (req->offloaded) { + req->ddp_status = status; + req->result = result; + nvme_tcp_teardown_ddp(req->queue, rq); + return; + } +#endif + + if (!nvme_try_complete_req(rq, status, result)) + nvme_complete_rq(rq); +} + static int nvme_tcp_process_nvme_cqe(struct nvme_tcp_queue *queue, struct nvme_completion *cqe) { @@ -750,10 +847,8 @@ static int nvme_tcp_process_nvme_cqe(struct nvme_tcp_queue *queue, if (req->status == cpu_to_le16(NVME_SC_SUCCESS)) req->status = cqe->status; - if (!nvme_try_complete_req(rq, req->status, cqe->result)) - nvme_complete_rq(rq); + nvme_tcp_complete_request(rq, req->status, cqe->result, cqe->command_id); queue->nr_cqe++; - return 0; } @@ -951,10 +1046,12 @@ static int nvme_tcp_recv_pdu(struct nvme_tcp_queue *queue, struct sk_buff *skb, static inline void nvme_tcp_end_request(struct request *rq, u16 status) { + struct nvme_tcp_request *req = blk_mq_rq_to_pdu(rq); + struct nvme_tcp_queue *queue = req->queue; + struct nvme_tcp_data_pdu *pdu = (void *)queue->pdu; union nvme_result res = {}; - if (!nvme_try_complete_req(rq, cpu_to_le16(status << 1), res)) - nvme_complete_rq(rq); + nvme_tcp_complete_request(rq, cpu_to_le16(status << 1), res, pdu->command_id); } static int nvme_tcp_recv_data(struct nvme_tcp_queue *queue, struct sk_buff *skb, @@ -1252,6 +1349,13 @@ static int nvme_tcp_try_send_cmd_pdu(struct nvme_tcp_request *req) else flags |= MSG_EOR; + if (test_bit(NVME_TCP_Q_OFF_DDP, &queue->flags)) { + ret = nvme_tcp_setup_ddp(queue, pdu->cmd.common.command_id, + blk_mq_rq_from_pdu(req)); + WARN_ONCE(ret, "ddp setup failed (queue 0x%x, cid 0x%x, ret=%d)", + nvme_tcp_queue_id(queue), pdu->cmd.common.command_id, ret); + } + if (queue->hdr_digest && !req->offset) nvme_tcp_hdgst(queue->snd_hash, pdu, sizeof(*pdu)); @@ -2580,6 +2684,9 @@ static blk_status_t nvme_tcp_setup_cmd_pdu(struct nvme_ns *ns, if (ret) return ret; +#ifdef CONFIG_ULP_DDP + req->offloaded = false; +#endif req->state = NVME_TCP_SEND_CMD_PDU; req->status = cpu_to_le16(NVME_SC_SUCCESS); req->offset = 0; -- 2.31.1