From patchwork Tue Dec 13 02:36:01 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanislav Fomichev X-Patchwork-Id: 13071659 X-Patchwork-Delegate: bpf@iogearbox.net 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 236E2C00145 for ; Tue, 13 Dec 2022 02:37:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234307AbiLMCh1 (ORCPT ); Mon, 12 Dec 2022 21:37:27 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46130 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234298AbiLMCg5 (ORCPT ); Mon, 12 Dec 2022 21:36:57 -0500 Received: from mail-pg1-x549.google.com (mail-pg1-x549.google.com [IPv6:2607:f8b0:4864:20::549]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 13A4C1E3C3 for ; Mon, 12 Dec 2022 18:36:26 -0800 (PST) Received: by mail-pg1-x549.google.com with SMTP id 134-20020a63008c000000b00478b9313e0eso8677418pga.9 for ; Mon, 12 Dec 2022 18:36:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=QpcOlS8O+iuDE4q8v93o9r3bTjxxaLceef6G1IdJp60=; b=ZfhSnk19BzTLecLyGQAcv1E/UPDJClqPahgcrWUXPjCGZ6wOkNIYQX3CpsXcCq/zQk sBnWn+5kSDKD9R8+fpcYK3+Dowo912j+bgGBSSI/0HZ6PYeQGmao8IfXdgLbR4WTowER 3Yu//BwPXc/ihwM/BEiKTCdRKdDChj8XCl/42PpLa8v6vcrVMjmkfPQcxF77FGgj7xCZ UDsTb5r3ZUjILHsZG6IJi59neki8ABIUbNkVb/50om+cfrbStZEBhwXyeXeQzxAp6hEX yOL7q1/UR53a+jZOYlP8ICwGK+S7EFesMFTUfJ1fukDLRSbJcZaf2fRjf2kvwaec4PqI oKDQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=QpcOlS8O+iuDE4q8v93o9r3bTjxxaLceef6G1IdJp60=; b=2Rsv5moHghlE437X7hHiKTWOLvNgUKmXdRoz5tRkNCJ5srOlMKlgmwBVHrNMEKS6ea 3WuRgf/69TlaS3uLaoNiMA67Q8NI7SynGU8DvZ7DQ6qaGtZrwp2MGcTAUexGo8Uix8qD YvCCq5tBoUk5DhAZT4OyUOUfKTQ8cdH2RjVRwXZFQlg3I2daUo3gPTqzJJeu6p5NSXJl e1+7UOQW3DOB4j+9e9UVHsyrRRnlZws85jWMNk/mJ7QzVgDzatc34YpyQGlFD0R5Ignp QX1Wk3ZwdxoGhLK4BAENSjIWcBB7hzhCngDnjHNkjXnaheiS0gRFPJrftINy+FD5KN7C rMBg== X-Gm-Message-State: ANoB5pkee2hcij2ogzDJXnxNngprgvc8Vx0QW2PWx8brCctT4xBwsT3G BX5lxQD19eSPkVis72eEpqi6ya0= X-Google-Smtp-Source: AA0mqf4KekH88SFJ0ktqphFkTc4elIpJE6hYad5/nf4FGPzvo6ReWFOd39PCP1S3NPxsZv3q/jweyDA= X-Received: from sdf.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5935]) (user=sdf job=sendgmr) by 2002:a17:90a:4fc6:b0:21a:a0f:6acc with SMTP id q64-20020a17090a4fc600b0021a0a0f6accmr175898pjh.77.1670898985610; Mon, 12 Dec 2022 18:36:25 -0800 (PST) Date: Mon, 12 Dec 2022 18:36:01 -0800 In-Reply-To: <20221213023605.737383-1-sdf@google.com> Mime-Version: 1.0 References: <20221213023605.737383-1-sdf@google.com> X-Mailer: git-send-email 2.39.0.rc1.256.g54fd8350bd-goog Message-ID: <20221213023605.737383-12-sdf@google.com> Subject: [PATCH bpf-next v4 11/15] net/mlx4_en: Support RX XDP metadata From: Stanislav Fomichev To: bpf@vger.kernel.org Cc: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, martin.lau@linux.dev, song@kernel.org, yhs@fb.com, john.fastabend@gmail.com, kpsingh@kernel.org, sdf@google.com, haoluo@google.com, jolsa@kernel.org, Tariq Toukan , David Ahern , Jakub Kicinski , Willem de Bruijn , Jesper Dangaard Brouer , Anatoly Burakov , Alexander Lobakin , Magnus Karlsson , Maryam Tahhan , xdp-hints@xdp-project.net, netdev@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: bpf@iogearbox.net RX timestamp and hash for now. Tested using the prog from the next patch. Also enabling xdp metadata support; don't see why it's disabled, there is enough headroom.. Cc: Tariq Toukan Cc: John Fastabend Cc: David Ahern Cc: Martin KaFai Lau Cc: Jakub Kicinski Cc: Willem de Bruijn Cc: Jesper Dangaard Brouer Cc: Anatoly Burakov Cc: Alexander Lobakin Cc: Magnus Karlsson Cc: Maryam Tahhan Cc: xdp-hints@xdp-project.net Cc: netdev@vger.kernel.org Signed-off-by: Stanislav Fomichev Reviewed-by: Tariq Toukan --- drivers/net/ethernet/mellanox/mlx4/en_clock.c | 13 +++++--- .../net/ethernet/mellanox/mlx4/en_netdev.c | 6 ++++ drivers/net/ethernet/mellanox/mlx4/en_rx.c | 33 ++++++++++++++++++- drivers/net/ethernet/mellanox/mlx4/mlx4_en.h | 5 +++ 4 files changed, 52 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/en_clock.c b/drivers/net/ethernet/mellanox/mlx4/en_clock.c index 98b5ffb4d729..9e3b76182088 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_clock.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_clock.c @@ -58,9 +58,7 @@ u64 mlx4_en_get_cqe_ts(struct mlx4_cqe *cqe) return hi | lo; } -void mlx4_en_fill_hwtstamps(struct mlx4_en_dev *mdev, - struct skb_shared_hwtstamps *hwts, - u64 timestamp) +u64 mlx4_en_get_hwtstamp(struct mlx4_en_dev *mdev, u64 timestamp) { unsigned int seq; u64 nsec; @@ -70,8 +68,15 @@ void mlx4_en_fill_hwtstamps(struct mlx4_en_dev *mdev, nsec = timecounter_cyc2time(&mdev->clock, timestamp); } while (read_seqretry(&mdev->clock_lock, seq)); + return ns_to_ktime(nsec); +} + +void mlx4_en_fill_hwtstamps(struct mlx4_en_dev *mdev, + struct skb_shared_hwtstamps *hwts, + u64 timestamp) +{ memset(hwts, 0, sizeof(struct skb_shared_hwtstamps)); - hwts->hwtstamp = ns_to_ktime(nsec); + hwts->hwtstamp = mlx4_en_get_hwtstamp(mdev, timestamp); } /** diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c index 8800d3f1f55c..af4c4858f397 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c @@ -2889,6 +2889,11 @@ static const struct net_device_ops mlx4_netdev_ops_master = { .ndo_bpf = mlx4_xdp, }; +static const struct xdp_metadata_ops mlx4_xdp_metadata_ops = { + .xmo_rx_timestamp = mlx4_en_xdp_rx_timestamp, + .xmo_rx_hash = mlx4_en_xdp_rx_hash, +}; + struct mlx4_en_bond { struct work_struct work; struct mlx4_en_priv *priv; @@ -3310,6 +3315,7 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, dev->netdev_ops = &mlx4_netdev_ops_master; else dev->netdev_ops = &mlx4_netdev_ops; + dev->xdp_metadata_ops = &mlx4_xdp_metadata_ops; dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT; netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]); netif_set_real_num_rx_queues(dev, priv->rx_ring_num); diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c index 014a80af2813..0869d4fff17b 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c @@ -663,8 +663,35 @@ static int check_csum(struct mlx4_cqe *cqe, struct sk_buff *skb, void *va, struct mlx4_en_xdp_buff { struct xdp_buff xdp; + struct mlx4_cqe *cqe; + struct mlx4_en_dev *mdev; + struct mlx4_en_rx_ring *ring; + struct net_device *dev; }; +int mlx4_en_xdp_rx_timestamp(const struct xdp_md *ctx, u64 *timestamp) +{ + struct mlx4_en_xdp_buff *_ctx = (void *)ctx; + + if (unlikely(_ctx->ring->hwtstamp_rx_filter != HWTSTAMP_FILTER_ALL)) + return -EOPNOTSUPP; + + *timestamp = mlx4_en_get_hwtstamp(_ctx->mdev, + mlx4_en_get_cqe_ts(_ctx->cqe)); + return 0; +} + +int mlx4_en_xdp_rx_hash(const struct xdp_md *ctx, u32 *hash) +{ + struct mlx4_en_xdp_buff *_ctx = (void *)ctx; + + if (unlikely(!(_ctx->dev->features & NETIF_F_RXHASH))) + return -EOPNOTSUPP; + + *hash = be32_to_cpu(_ctx->cqe->immed_rss_invalid); + return 0; +} + int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int budget) { struct mlx4_en_priv *priv = netdev_priv(dev); @@ -781,8 +808,12 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud DMA_FROM_DEVICE); xdp_prepare_buff(&mxbuf.xdp, va - frags[0].page_offset, - frags[0].page_offset, length, false); + frags[0].page_offset, length, true); orig_data = mxbuf.xdp.data; + mxbuf.cqe = cqe; + mxbuf.mdev = priv->mdev; + mxbuf.ring = ring; + mxbuf.dev = dev; act = bpf_prog_run_xdp(xdp_prog, &mxbuf.xdp); diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h index e132ff4c82f2..2f8ef0b30083 100644 --- a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h +++ b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h @@ -788,10 +788,15 @@ void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev, int mlx4_en_netdev_event(struct notifier_block *this, unsigned long event, void *ptr); +struct xdp_md; +int mlx4_en_xdp_rx_timestamp(const struct xdp_md *ctx, u64 *timestamp); +int mlx4_en_xdp_rx_hash(const struct xdp_md *ctx, u32 *hash); + /* * Functions for time stamping */ u64 mlx4_en_get_cqe_ts(struct mlx4_cqe *cqe); +u64 mlx4_en_get_hwtstamp(struct mlx4_en_dev *mdev, u64 timestamp); void mlx4_en_fill_hwtstamps(struct mlx4_en_dev *mdev, struct skb_shared_hwtstamps *hwts, u64 timestamp);