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dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=nvidia.com; Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates 216.228.117.161 as permitted sender) receiver=protection.outlook.com; client-ip=216.228.117.161; helo=mail.nvidia.com; pr=C Received: from mail.nvidia.com (216.228.117.161) by SN1PEPF0002BA52.mail.protection.outlook.com (10.167.242.75) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7292.25 via Frontend Transport; Tue, 20 Feb 2024 11:46:01 +0000 Received: from rnnvmail201.nvidia.com (10.129.68.8) by mail.nvidia.com (10.129.200.67) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.41; Tue, 20 Feb 2024 03:45:42 -0800 Received: from nvidia.com (10.126.231.35) by rnnvmail201.nvidia.com (10.129.68.8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1258.12; Tue, 20 Feb 2024 03:45:39 -0800 From: Viacheslav Ovsiienko To: CC: , , , , Subject: [PATCH] net/mlx5: fix error packets drop in the regular Rx Date: Tue, 20 Feb 2024 13:45:20 +0200 Message-ID: <20240220114520.14531-1-viacheslavo@nvidia.com> X-Mailer: git-send-email 2.18.1 MIME-Version: 1.0 X-Originating-IP: [10.126.231.35] X-ClientProxiedBy: rnnvmail203.nvidia.com (10.129.68.9) To rnnvmail201.nvidia.com (10.129.68.8) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SN1PEPF0002BA52:EE_|SA1PR12MB8842:EE_ X-MS-Office365-Filtering-Correlation-Id: 7e4ffe33-3ec5-4bcb-550a-08dc32098320 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Ip=[216.228.117.161]; Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: SN1PEPF0002BA52.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA1PR12MB8842 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org When packet gets received with error it is reported in CQE structure and PMD analyzes the error syndrome and provides two options - either reset the entire queue for the critical errors, or just ignore the packet. The non-vectorized rx_burst did not ignore the non-critical error packets, and in case of packet length exceeding the mbuf data buffer length it took the next element in the queue WQE ring, resulting in CQE/WQE consume indices synchronization lost. Fixes: aa67ed308458 ("net/mlx5: ignore non-critical syndromes for Rx queue") Cc: stable@dpdk.org Signed-off-by: Viacheslav Ovsiienko Acked-by: Dariusz Sosnowski --- drivers/net/mlx5/mlx5_rx.c | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) diff --git a/drivers/net/mlx5/mlx5_rx.c b/drivers/net/mlx5/mlx5_rx.c index 5bf1a679b2..cc087348a4 100644 --- a/drivers/net/mlx5/mlx5_rx.c +++ b/drivers/net/mlx5/mlx5_rx.c @@ -613,7 +613,8 @@ mlx5_rx_err_handle(struct mlx5_rxq_data *rxq, uint8_t vec, * @param mprq * Indication if it is called from MPRQ. * @return - * 0 in case of empty CQE, MLX5_REGULAR_ERROR_CQE_RET in case of error CQE, + * 0 in case of empty CQE, + * MLX5_REGULAR_ERROR_CQE_RET in case of error CQE, * MLX5_CRITICAL_ERROR_CQE_RET in case of error CQE lead to Rx queue reset, * otherwise the packet size in regular RxQ, * and striding byte count format in mprq case. @@ -697,6 +698,11 @@ mlx5_rx_poll_len(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cqe, if (ret == MLX5_RECOVERY_ERROR_RET || ret == MLX5_RECOVERY_COMPLETED_RET) return MLX5_CRITICAL_ERROR_CQE_RET; + if (!mprq && ret == MLX5_RECOVERY_IGNORE_RET) { + *skip_cnt = 1; + ++rxq->cq_ci; + return MLX5_ERROR_CQE_MASK; + } } else { return 0; } @@ -971,19 +977,18 @@ mlx5_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n) cqe = &(*rxq->cqes)[rxq->cq_ci & cqe_mask]; len = mlx5_rx_poll_len(rxq, cqe, cqe_n, cqe_mask, &mcqe, &skip_cnt, false); if (unlikely(len & MLX5_ERROR_CQE_MASK)) { + /* We drop packets with non-critical errors */ + rte_mbuf_raw_free(rep); if (len == MLX5_CRITICAL_ERROR_CQE_RET) { - rte_mbuf_raw_free(rep); rq_ci = rxq->rq_ci << sges_n; break; } + /* Skip specified amount of error CQEs packets */ rq_ci >>= sges_n; rq_ci += skip_cnt; rq_ci <<= sges_n; - idx = rq_ci & wqe_mask; - wqe = &((volatile struct mlx5_wqe_data_seg *)rxq->wqes)[idx]; - seg = (*rxq->elts)[idx]; - cqe = &(*rxq->cqes)[rxq->cq_ci & cqe_mask]; - len = len & ~MLX5_ERROR_CQE_MASK; + MLX5_ASSERT(!pkt); + continue; } if (len == 0) { rte_mbuf_raw_free(rep);