linux-kernel - Re: [PATCH 5/7] vdpa/mlx5: Add RX counters to debugfs

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Date:   Mon, 14 Nov 2022 15:26:46 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     Eli Cohen <elic@...dia.com>
Cc:     mst@...hat.com, linux-kernel@...r.kernel.org,
        virtualization@...ts.linux-foundation.org, si-wei.liu@...cle.com,
        eperezma@...hat.com, lulu@...hat.com
Subject: Re: [PATCH 5/7] vdpa/mlx5: Add RX counters to debugfs

On Sun, Nov 13, 2022 at 9:45 PM Eli Cohen <elic@...dia.com> wrote:
>
> For each interface, either VLAN tagged or untagged, add two hardware
> counters: one for unicast and another for multicast. The counters count
> RX packets and bytes and can be read through debugfs:
>
> $ cat /sys/kernel/debug/mlx5/mlx5_core.sf.1/vdpa-0/rx/untagged/mcast/packets
> $ cat /sys/kernel/debug/mlx5/mlx5_core.sf.1/vdpa-0/rx/untagged/ucast/bytes
>
> This feature is controlled via the config option
> MLX5_VDPA_STEERING_DEBUG. It is off by default as it may have some
> impact on performance.
>
> Signed-off-by: Eli Cohen <elic@...dia.com>
> ---
>  drivers/vdpa/Kconfig              |  12 +++
>  drivers/vdpa/mlx5/net/debug.c     |  86 ++++++++++++++++++++++
>  drivers/vdpa/mlx5/net/mlx5_vnet.c | 118 +++++++++++++++++++++++-------
>  drivers/vdpa/mlx5/net/mlx5_vnet.h |  30 ++++++++
>  4 files changed, 218 insertions(+), 28 deletions(-)
>

[...]

> +       vid = key2vid(node->macvlan);
>         spec->match_criteria_enable = MLX5_MATCH_OUTER_HEADERS;
>         headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, outer_headers);
>         headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, outer_headers);
> @@ -1430,48 +1475,62 @@ static int mlx5_vdpa_add_mac_vlan_rules(struct mlx5_vdpa_net *ndev, u8 *mac,
>         dmac_v = MLX5_ADDR_OF(fte_match_param, headers_v, outer_headers.dmac_47_16);
>         eth_broadcast_addr(dmac_c);
>         ether_addr_copy(dmac_v, mac);
> -       if (ndev->mvdev.actual_features & VIRTIO_NET_F_CTRL_VLAN) {
> +       if (ndev->mvdev.actual_features & BIT_ULL(VIRTIO_NET_F_CTRL_VLAN)) {


This seems like a fix for patch 1? If yes, let's just squash this.

Thanks