From: Tariq Toukan <ttoukan.linux@gmail.com>
To: Stanislav Fomichev <sdf@google.com>, 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, haoluo@google.com,
jolsa@kernel.org, Tariq Toukan <tariqt@nvidia.com>,
David Ahern <dsahern@gmail.com>, Jakub Kicinski <kuba@kernel.org>,
Willem de Bruijn <willemb@google.com>,
Jesper Dangaard Brouer <brouer@redhat.com>,
Anatoly Burakov <anatoly.burakov@intel.com>,
Alexander Lobakin <alexandr.lobakin@intel.com>,
Magnus Karlsson <magnus.karlsson@gmail.com>,
Maryam Tahhan <mtahhan@redhat.com>,
xdp-hints@xdp-project.net, netdev@vger.kernel.org
Subject: Re: [PATCH bpf-next v4 11/15] net/mlx4_en: Support RX XDP metadata
Date: Tue, 13 Dec 2022 10:56:44 +0200 [thread overview]
Message-ID: <a45cc7b7-8691-ff39-ddf8-df8fc7e6ab7c@gmail.com> (raw)
In-Reply-To: <20221213023605.737383-12-sdf@google.com>
On 12/13/2022 4:36 AM, Stanislav Fomichev wrote:
> 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 <tariqt@nvidia.com>
> Cc: John Fastabend <john.fastabend@gmail.com>
> Cc: David Ahern <dsahern@gmail.com>
> Cc: Martin KaFai Lau <martin.lau@linux.dev>
> Cc: Jakub Kicinski <kuba@kernel.org>
> Cc: Willem de Bruijn <willemb@google.com>
> Cc: Jesper Dangaard Brouer <brouer@redhat.com>
> Cc: Anatoly Burakov <anatoly.burakov@intel.com>
> Cc: Alexander Lobakin <alexandr.lobakin@intel.com>
> Cc: Magnus Karlsson <magnus.karlsson@gmail.com>
> Cc: Maryam Tahhan <mtahhan@redhat.com>
> Cc: xdp-hints@xdp-project.net
> Cc: netdev@vger.kernel.org
> Signed-off-by: Stanislav Fomichev <sdf@google.com>
> ---
> 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);
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
next prev parent reply other threads:[~2022-12-13 8:56 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-13 2:35 [PATCH bpf-next v4 00/15] xdp: hints via kfuncs Stanislav Fomichev
2022-12-13 2:35 ` [PATCH bpf-next v4 01/15] bpf: Document XDP RX metadata Stanislav Fomichev
2022-12-13 16:37 ` David Vernet
2022-12-13 20:42 ` Stanislav Fomichev
2022-12-14 10:34 ` [xdp-hints] " Toke Høiland-Jørgensen
2022-12-14 18:42 ` Stanislav Fomichev
2022-12-14 23:46 ` Toke Høiland-Jørgensen
2022-12-15 3:48 ` Stanislav Fomichev
2022-12-15 14:04 ` Toke Høiland-Jørgensen
2022-12-14 23:46 ` [xdp-hints] " Toke Høiland-Jørgensen
2022-12-17 4:20 ` kernel test robot
2022-12-13 2:35 ` [PATCH bpf-next v4 02/15] bpf: Rename bpf_{prog,map}_is_dev_bound to is_offloaded Stanislav Fomichev
2022-12-13 2:35 ` [PATCH bpf-next v4 03/15] bpf: Introduce device-bound XDP programs Stanislav Fomichev
2022-12-13 23:25 ` Martin KaFai Lau
2022-12-14 18:42 ` Stanislav Fomichev
2022-12-13 2:35 ` [PATCH bpf-next v4 04/15] selftests/bpf: Update expected test_offload.py messages Stanislav Fomichev
2022-12-13 2:35 ` [PATCH bpf-next v4 05/15] bpf: XDP metadata RX kfuncs Stanislav Fomichev
2022-12-13 17:00 ` David Vernet
2022-12-13 20:42 ` Stanislav Fomichev
2022-12-13 21:45 ` David Vernet
2022-12-14 1:53 ` Martin KaFai Lau
2022-12-14 18:43 ` Stanislav Fomichev
2022-12-14 10:54 ` [xdp-hints] " Toke Høiland-Jørgensen
2022-12-14 18:43 ` Stanislav Fomichev
2022-12-13 2:35 ` [PATCH bpf-next v4 06/15] bpf: Support consuming XDP HW metadata from fext programs Stanislav Fomichev
2022-12-14 1:45 ` Martin KaFai Lau
2022-12-14 10:41 ` Toke Høiland-Jørgensen
2022-12-14 18:43 ` Stanislav Fomichev
2022-12-14 22:19 ` Toke Høiland-Jørgensen
2022-12-13 2:35 ` [PATCH bpf-next v4 07/15] veth: Introduce veth_xdp_buff wrapper for xdp_buff Stanislav Fomichev
2022-12-13 2:35 ` [PATCH bpf-next v4 08/15] veth: Support RX XDP metadata Stanislav Fomichev
2022-12-13 15:55 ` Jesper Dangaard Brouer
2022-12-13 20:42 ` Stanislav Fomichev
2022-12-14 9:48 ` Jesper Dangaard Brouer
2022-12-14 10:47 ` [xdp-hints] " Toke Høiland-Jørgensen
2022-12-14 18:09 ` Martin KaFai Lau
2022-12-14 18:44 ` Stanislav Fomichev
2022-12-13 2:35 ` [PATCH bpf-next v4 09/15] selftests/bpf: Verify xdp_metadata xdp->af_xdp path Stanislav Fomichev
2022-12-13 2:36 ` [PATCH bpf-next v4 10/15] net/mlx4_en: Introduce wrapper for xdp_buff Stanislav Fomichev
2022-12-13 8:56 ` Tariq Toukan
2022-12-13 2:36 ` [PATCH bpf-next v4 11/15] net/mlx4_en: Support RX XDP metadata Stanislav Fomichev
2022-12-13 8:56 ` Tariq Toukan [this message]
2022-12-13 2:36 ` [PATCH bpf-next v4 12/15] xsk: Add cb area to struct xdp_buff_xsk Stanislav Fomichev
2022-12-13 2:36 ` [PATCH bpf-next v4 13/15] net/mlx5e: Introduce wrapper for xdp_buff Stanislav Fomichev
2022-12-13 2:36 ` [PATCH bpf-next v4 14/15] net/mlx5e: Support RX XDP metadata Stanislav Fomichev
2022-12-13 2:36 ` [PATCH bpf-next v4 15/15] selftests/bpf: Simple program to dump XDP RX metadata Stanislav Fomichev
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