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 4A64BC4332F for ; Thu, 14 Dec 2023 13:27:20 +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=LW9jBb6wegwDS2vVLzzqTrNCVr6kMm2sXwm5fuKeEco=; b=BVTDnjHikG/P3zSkTWy8q1S2QL ThwzIL8QjwLAIor2eRdQItOnnfqS6hDwYFX5XIhPtCAGMfHMA/Uvc0A7KL2mstOPLlr31bqz6LitM 2u1+Ma3svHOWaV2u7OF3maGlp0SdzE6x+mkjb6f3t4uTlkSfp3f0wBid5pBUxUld9uLX51ePCDNeN c1xG050ebuNhLzvng0DrCXzRc1w0bdXKEP3AedAbhf6aQt/Vf6UUSpFXdPq1qscOCxmsgluJOz9AX s5JbNKr23MJaKtzUyZaZnXb0Llxo8U0MsSMa6BmOzpTANsZ5RJCrO9v1oWPkzHW7CszH8incOo9tb A+IN0C7w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1rDlkE-000Njt-13; Thu, 14 Dec 2023 13:27:18 +0000 Received: from mail-dm6nam11on20611.outbound.protection.outlook.com ([2a01:111:f400:7eaa::611] helo=NAM11-DM6-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1rDlkA-000NgG-1B for linux-nvme@lists.infradead.org; Thu, 14 Dec 2023 13:27:16 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=VSZNU0eOIQEtYgcubwrQvUVuARzf0MxapZ4w1KJOeWFX/t17eNlEivxrFY90O/4ZxKWDQwwZrftoCB9FCGjUno49rbiU3445+80yFyGQqgzazJ/5S4CG7cE+YXbDMeu44lpcJSctkSeQ6tq0i2uBTJqoVwv74eLSRMaKwWFN6s/6mw4obvj3z1UAR7mPJsJuS5/CUMl9OalSmq1dLrgqQITHRC9C/xVX5T0aK7JFX0Kuy6x/UhdKj0uaOEGHHNz1fqssJGgvoS9+evY79Vgx+gst6p0xDGAjazk+/mFfgTwLo6tzX8Pr4W1UqJOb5RPehHKwQqEnXUAsM9KNrdYLKw== 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=LW9jBb6wegwDS2vVLzzqTrNCVr6kMm2sXwm5fuKeEco=; b=e7OWjYEyWQR1T8GnSmvcVoaOEuCvjhFw3HsP6v0T/d/edZ5hmcuRQJdbynj1lmlqYxuYqXvq+dZKN/8xA7MlicfmPlAdXAN6W66kksC+B1FRvJ99cusOY8dn7tek2hfHaBnnyafdwzcxFoz3+Y4HCLpZ9yJfv5k+JdstNHiRLtNPePTNLOkceDBgwbQcbD4MbL0dWIpEx/74ZsayChcQxu9C7Bb28k0HJKG3e18nI5Ajo8KCpdRdMqDeWjEzdeuiMcx9xshjTeoDmRu1XB3MHsFWlIzpnL6xbYSjRjkUgsaQSvkJyZHzpDQnaIFruUfWWME4xIQWEb+Nytu1j1ThJQ== 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=LW9jBb6wegwDS2vVLzzqTrNCVr6kMm2sXwm5fuKeEco=; b=jqvzJUwlJABw2mCOUb+02RjFzXrthYIr0LXSuSD+tGHnzgJ9QzuCsjJqhy+VunTuI6PSBMMrzWfiJfxQ9jzgId5Q6FkxG3Y0UcTwGU1394k0q28L78FEigZ20OK8SphCISPoFpQtvesDL/MJFrsmTpyrhykPD+w16mJt7dGrU9ASTFQvDoyg9aY0efpxEa36TN9TnHd4f91ZWeSiqDSayhz/bUxrNdJi+Q+1VTcndyI6r7zq6l7X97oy/vcjegmeIL5hXMn/QZEQK69RlbwreDp5RuplUtNsOo34yRmJ0FvYlwiHtu5RT4bA2lG0TSCNsJeNyBMAr+DuA9rl9yZZ3w== 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 MW6PR12MB8708.namprd12.prod.outlook.com (2603:10b6:303:242::21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7091.28; Thu, 14 Dec 2023 13:27:11 +0000 Received: from SJ1PR12MB6075.namprd12.prod.outlook.com ([fe80::eb39:938e:7503:c21e]) by SJ1PR12MB6075.namprd12.prod.outlook.com ([fe80::eb39:938e:7503:c21e%3]) with mapi id 15.20.7091.028; Thu, 14 Dec 2023 13:27:11 +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: Yoray Zack , aaptel@nvidia.com, aurelien.aptel@gmail.com, smalin@nvidia.com, malin1024@gmail.com, ogerlitz@nvidia.com, borisp@nvidia.com, galshalom@nvidia.com, mgurtovoy@nvidia.com Subject: [PATCH v21 07/20] nvme-tcp: RX DDGST offload Date: Thu, 14 Dec 2023 13:26:10 +0000 Message-Id: <20231214132623.119227-8-aaptel@nvidia.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231214132623.119227-1-aaptel@nvidia.com> References: <20231214132623.119227-1-aaptel@nvidia.com> Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: FR4P281CA0267.DEUP281.PROD.OUTLOOK.COM (2603:10a6:d10:e8::15) To SJ1PR12MB6075.namprd12.prod.outlook.com (2603:10b6:a03:45e::8) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ1PR12MB6075:EE_|MW6PR12MB8708:EE_ X-MS-Office365-Filtering-Correlation-Id: 60a143c8-3af8-46ff-f9c6-08dbfca860e1 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:(13230031)(376002)(346002)(396003)(366004)(39860400002)(136003)(230922051799003)(186009)(64100799003)(451199024)(1800799012)(7416002)(2906002)(38100700002)(36756003)(41300700001)(86362001)(2616005)(4326008)(8676002)(8936002)(6512007)(6486002)(478600001)(83380400001)(66476007)(66556008)(316002)(66946007)(6506007)(5660300002)(1076003)(107886003)(26005);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?y5YwcpvseencvQykc7NIuq2iM1pzWYn2zQVGgfKq+YoXDj03g0Bwdndo0xpF?= =?us-ascii?Q?RDhOE2KxVi3W1uD553RBDO5xr1YU40JhX5fNoHCucT8ZqfryxwA5ViOSEP6s?= =?us-ascii?Q?vM+QkCH6GmDsR0p93GhdR2HjzegiSuQK+lpspQuQ3JRKX8UZXlmTDWi+QTZw?= =?us-ascii?Q?jSZaKPt6HEYs8NMM58P6vYgPl1yFwtqfmyXVJv5/Iyr1gmqftN+jF8mpuSn4?= =?us-ascii?Q?79BsQ0b4G78oplmTOwybPUeTQxBPJqhxOpX6UxaKsOYbwfV4CdK9+Rw96uhF?= =?us-ascii?Q?6jBS444LiAnyPNWcb44ChCrzf93uuOU86HcWtlSeuFMZ3WTMFh2H/wL2k05Y?= =?us-ascii?Q?9/Hq7sjQCOLY2Qkv2vYgDpFc3dqJGyA5fXW5cVUbl1AyksMs2i49yTRl/oVy?= =?us-ascii?Q?V7kQBpkmuFWzsF8MwVgwFHR1afSHYNqyujL/BoFWfZsClu/o2NExniBQep3v?= =?us-ascii?Q?0aQ8cBdZBNhwHsgMPAL4s8mYjysVhS37lO8DGzD/yxJC/UpUlJgvOTzBpgkG?= =?us-ascii?Q?sOh7ZT2Sw7yCykvUvqMtzEbU8PFnbPK0cAc43wTfXP4BtYAnSOiMr4Dz261l?= =?us-ascii?Q?7PzmpkjQqXsgRvdWfmrq/LgfxAzAvQn4v+BH/8ls3COmFgVI3rHLdoEqXf45?= =?us-ascii?Q?D2v8OShPQf2QKF0YQxbe2SnA8vBOV4DXXQyow+BFnHR/bGeY5lTadksbfHpM?= =?us-ascii?Q?KFJ9jzTnODdTIiZd8V12dnSYG2Ffo8rituAaVWgRnnQo1dpM89YsA7bbBsg5?= =?us-ascii?Q?LJV4xTCJkOoib2kX7xFoB7VHShSaP+Q0/WwwcIr+ZNnN7vPbu90a+YT9jaAw?= =?us-ascii?Q?mL0GRp4gGosx/5dRnha9OcKdlFaFy6XAeJDu18pswggV/xXw93uMCLKkuE1r?= =?us-ascii?Q?Er/wyCFXwFT0uxgDakHhZ8GGCKbGYdPPbQSeWtzXtizCE2Njm3m1QrFQ2oiQ?= =?us-ascii?Q?Qf/8Te7QMxiukeGEbGrQ222dtMpDXasnxWANLduTbdMtzIYTedKAUvivewAW?= =?us-ascii?Q?msuKTALhGff0kZSHb+GprzBQpMPPXqeIAEiG8sR4+bBdLRG908lrAIQyDgGm?= =?us-ascii?Q?HjR6dmknzXIaXxS2/HjshPVdof/b6nUmziylIgKSetvFiomkljabOZAFdQ0H?= =?us-ascii?Q?ktDxi2oV/mQ43KBtYzTdltqxRSBValZBABM+Wst4XBYfwN3hciKak9sZjzCU?= =?us-ascii?Q?JO9/V5nFyKRKiOvWlJNkyHBuJHmwGavtrOoRJwGt/ZzwvGD+OfCklSK3l9/Z?= =?us-ascii?Q?ilTZZeskA8NYBoQzAabrXSbS81J+Ia9OOQuPZ6yBZkgj2uN33X31i6EBL+Zl?= =?us-ascii?Q?+O2CrSNVb5EaB4MjrNFJwTgVKKC6tfOv/2ZUcEpvP293Lcd19c43lzR9geMm?= =?us-ascii?Q?mqKNwY/MCcnbXPTsWPOP6Wqk8gRVMYXTJIKNcnpvEkNSb+7k18lTvoUxwfYO?= =?us-ascii?Q?wt0znhLRk1SY+9gy0OlCSSKsulwSQMMPEFeBldgrwJTtZvDpkmEtFwK6AKF5?= =?us-ascii?Q?RR8FYb8kEOdRzC7ASkmD1oClb0ufIxTiOG+aNMkl1/n9uu6tNXGi9zLayu85?= =?us-ascii?Q?3NmrgKA34FxmApS05SyAPD3giHTE5BgI8cuTloc6?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 60a143c8-3af8-46ff-f9c6-08dbfca860e1 X-MS-Exchange-CrossTenant-AuthSource: SJ1PR12MB6075.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 14 Dec 2023 13:27:11.4574 (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: 0rAeL/daokrUGVLlvz6XGhUhA4jgYKPnT37G5WI81+v+HJvxBbM6Ap1e6qtOE35+Pzls0Do2UiGvAWJpA/W9Fg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW6PR12MB8708 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231214_052714_908850_4869D3ED X-CRM114-Status: GOOD ( 16.73 ) 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: Yoray Zack Enable rx side of DDGST offload when supported. At the end of the capsule, check if all the skb bits are on, and if not recalculate the DDGST in SW and check it. Signed-off-by: Yoray Zack Signed-off-by: Boris Pismenny Signed-off-by: Ben Ben-Ishay Signed-off-by: Or Gerlitz Signed-off-by: Shai Malin Signed-off-by: Aurelien Aptel Reviewed-by: Chaitanya Kulkarni --- drivers/nvme/host/tcp.c | 81 ++++++++++++++++++++++++++++++++++++++--- 1 file changed, 76 insertions(+), 5 deletions(-) diff --git a/drivers/nvme/host/tcp.c b/drivers/nvme/host/tcp.c index 09ffa8ba7e72..a7591eb90b96 100644 --- a/drivers/nvme/host/tcp.c +++ b/drivers/nvme/host/tcp.c @@ -143,6 +143,7 @@ enum nvme_tcp_queue_flags { NVME_TCP_Q_LIVE = 1, NVME_TCP_Q_POLLING = 2, NVME_TCP_Q_OFF_DDP = 3, + NVME_TCP_Q_OFF_DDGST_RX = 4, }; enum nvme_tcp_recv_state { @@ -180,6 +181,7 @@ struct nvme_tcp_queue { * is pending (ULP_DDP_RESYNC_PENDING). */ atomic64_t resync_tcp_seq; + bool ddp_ddgst_valid; #endif /* send state */ @@ -378,6 +380,30 @@ nvme_tcp_get_ddp_netdev_with_limits(struct nvme_tcp_ctrl *ctrl) return NULL; } +static inline bool nvme_tcp_ddp_ddgst_ok(struct nvme_tcp_queue *queue) +{ + return queue->ddp_ddgst_valid; +} + +static inline void nvme_tcp_ddp_ddgst_update(struct nvme_tcp_queue *queue, + struct sk_buff *skb) +{ + if (queue->ddp_ddgst_valid) + queue->ddp_ddgst_valid = skb_is_ulp_crc(skb); +} + +static void nvme_tcp_ddp_ddgst_recalc(struct ahash_request *hash, + struct request *rq, + __le32 *ddgst) +{ + struct nvme_tcp_request *req; + + req = blk_mq_rq_to_pdu(rq); + ahash_request_set_crypt(hash, req->ddp.sg_table.sgl, (u8 *)ddgst, + req->data_len); + crypto_ahash_digest(hash); +} + 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 = { @@ -467,6 +493,10 @@ static int nvme_tcp_offload_socket(struct nvme_tcp_queue *queue) return ret; set_bit(NVME_TCP_Q_OFF_DDP, &queue->flags); + if (queue->data_digest && + ulp_ddp_is_cap_active(queue->ctrl->ddp_netdev, + ULP_DDP_CAP_NVME_TCP_DDGST_RX)) + set_bit(NVME_TCP_Q_OFF_DDGST_RX, &queue->flags); return 0; } @@ -474,6 +504,7 @@ static int nvme_tcp_offload_socket(struct nvme_tcp_queue *queue) static void nvme_tcp_unoffload_socket(struct nvme_tcp_queue *queue) { clear_bit(NVME_TCP_Q_OFF_DDP, &queue->flags); + clear_bit(NVME_TCP_Q_OFF_DDGST_RX, &queue->flags); ulp_ddp_sk_del(queue->ctrl->ddp_netdev, queue->sock->sk); } @@ -582,6 +613,20 @@ static void nvme_tcp_resync_response(struct nvme_tcp_queue *queue, struct sk_buff *skb, unsigned int offset) {} +static inline bool nvme_tcp_ddp_ddgst_ok(struct nvme_tcp_queue *queue) +{ + return false; +} + +static inline void nvme_tcp_ddp_ddgst_update(struct nvme_tcp_queue *queue, + struct sk_buff *skb) +{} + +static void nvme_tcp_ddp_ddgst_recalc(struct ahash_request *hash, + struct request *rq, + __le32 *ddgst) +{} + #endif static void nvme_tcp_init_iter(struct nvme_tcp_request *req, @@ -842,6 +887,9 @@ static void nvme_tcp_init_recv_ctx(struct nvme_tcp_queue *queue) queue->pdu_offset = 0; queue->data_remaining = -1; queue->ddgst_remaining = 0; +#ifdef CONFIG_ULP_DDP + queue->ddp_ddgst_valid = true; +#endif } static void nvme_tcp_error_recovery(struct nvme_ctrl *ctrl) @@ -1107,6 +1155,10 @@ static int nvme_tcp_recv_data(struct nvme_tcp_queue *queue, struct sk_buff *skb, nvme_cid_to_rq(nvme_tcp_tagset(queue), pdu->command_id); struct nvme_tcp_request *req = blk_mq_rq_to_pdu(rq); + if (queue->data_digest && + test_bit(NVME_TCP_Q_OFF_DDGST_RX, &queue->flags)) + nvme_tcp_ddp_ddgst_update(queue, skb); + while (true) { int recv_len, ret; @@ -1135,7 +1187,8 @@ static int nvme_tcp_recv_data(struct nvme_tcp_queue *queue, struct sk_buff *skb, recv_len = min_t(size_t, recv_len, iov_iter_count(&req->iter)); - if (queue->data_digest) + if (queue->data_digest && + !test_bit(NVME_TCP_Q_OFF_DDGST_RX, &queue->flags)) ret = skb_copy_and_hash_datagram_iter(skb, *offset, &req->iter, recv_len, queue->rcv_hash); else @@ -1177,8 +1230,11 @@ static int nvme_tcp_recv_ddgst(struct nvme_tcp_queue *queue, char *ddgst = (char *)&queue->recv_ddgst; size_t recv_len = min_t(size_t, *len, queue->ddgst_remaining); off_t off = NVME_TCP_DIGEST_LENGTH - queue->ddgst_remaining; + struct request *rq; int ret; + if (test_bit(NVME_TCP_Q_OFF_DDGST_RX, &queue->flags)) + nvme_tcp_ddp_ddgst_update(queue, skb); ret = skb_copy_bits(skb, *offset, &ddgst[off], recv_len); if (unlikely(ret)) return ret; @@ -1189,9 +1245,25 @@ static int nvme_tcp_recv_ddgst(struct nvme_tcp_queue *queue, if (queue->ddgst_remaining) return 0; + rq = nvme_cid_to_rq(nvme_tcp_tagset(queue), + pdu->command_id); + + if (test_bit(NVME_TCP_Q_OFF_DDGST_RX, &queue->flags)) { + /* + * If HW successfully offloaded the digest + * verification, we can skip it + */ + if (nvme_tcp_ddp_ddgst_ok(queue)) + goto out; + /* + * Otherwise we have to recalculate and verify the + * digest with the software-fallback + */ + nvme_tcp_ddp_ddgst_recalc(queue->rcv_hash, rq, + &queue->exp_ddgst); + } + if (queue->recv_ddgst != queue->exp_ddgst) { - struct request *rq = nvme_cid_to_rq(nvme_tcp_tagset(queue), - pdu->command_id); struct nvme_tcp_request *req = blk_mq_rq_to_pdu(rq); req->status = cpu_to_le16(NVME_SC_DATA_XFER_ERROR); @@ -1202,9 +1274,8 @@ static int nvme_tcp_recv_ddgst(struct nvme_tcp_queue *queue, le32_to_cpu(queue->exp_ddgst)); } +out: if (pdu->hdr.flags & NVME_TCP_F_DATA_SUCCESS) { - struct request *rq = nvme_cid_to_rq(nvme_tcp_tagset(queue), - pdu->command_id); struct nvme_tcp_request *req = blk_mq_rq_to_pdu(rq); nvme_tcp_end_request(rq, le16_to_cpu(req->status)); -- 2.34.1