Hi Tom,
See few comments.
Wednesday, November 28, 2018 11:52 AM, Tom Barbette:
> Subject: [RFC PATCH 2/3] mlx5: Implement support for read_clock
>
> Signed-off-by: Tom Barbette <barbe...@kth.se>
> ---
> drivers/net/mlx5/mlx5.c | 1 +
> drivers/net/mlx5/mlx5.h | 1 +
> drivers/net/mlx5/mlx5_ethdev.c | 31
> +++++++++++++++++++++++++++++++
> drivers/net/mlx5/mlx5_glue.c | 8 ++++++++
> drivers/net/mlx5/mlx5_glue.h | 2 ++
> 5 files changed, 43 insertions(+)
>
> diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c index
> 9e5cab169..ed799ab5a 100644
> --- a/drivers/net/mlx5/mlx5.c
> +++ b/drivers/net/mlx5/mlx5.c
> @@ -372,6 +372,7 @@ const struct eth_dev_ops mlx5_dev_ops = {
> .xstats_reset = mlx5_xstats_reset,
> .xstats_get_names = mlx5_xstats_get_names,
> .dev_infos_get = mlx5_dev_infos_get,
> + .read_clock = mlx5_read_clock,
> .dev_supported_ptypes_get = mlx5_dev_supported_ptypes_get,
> .vlan_filter_set = mlx5_vlan_filter_set,
> .rx_queue_setup = mlx5_rx_queue_setup, diff --git
> a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h index
> bc500b2bc..3972debf5 100644
> --- a/drivers/net/mlx5/mlx5.h
> +++ b/drivers/net/mlx5/mlx5.h
> @@ -258,6 +258,7 @@ int mlx5_set_flags(struct rte_eth_dev *dev, unsigned
> int keep,
> unsigned int flags);
> int mlx5_dev_configure(struct rte_eth_dev *dev); void
> mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info
> *info);
> +int mlx5_read_clock(struct rte_eth_dev *dev, uint64_t *time);
> const uint32_t *mlx5_dev_supported_ptypes_get(struct rte_eth_dev
> *dev); int mlx5_link_update(struct rte_eth_dev *dev, int
> wait_to_complete); int mlx5_force_link_status_change(struct rte_eth_dev
> *dev, int status); diff --git a/drivers/net/mlx5/mlx5_ethdev.c
> b/drivers/net/mlx5/mlx5_ethdev.c index d178ed6a1..eb97ab27e 100644
> --- a/drivers/net/mlx5/mlx5_ethdev.c
> +++ b/drivers/net/mlx5/mlx5_ethdev.c
> @@ -557,6 +557,37 @@ mlx5_dev_infos_get(struct rte_eth_dev *dev,
> struct rte_eth_dev_info *info)
> }
> }
>
> +/**
> + * Get device current raw clock counter
> + *
> + * @param dev
> + * Pointer to Ethernet device structure.
> + *
Above space is not needed.
> + * @param[out] time
> + * Current raw clock counter of the device.
> + *
> + * @return
> + * 0 if the clock has correctly been read
And if not?
> + */
> +int
> +mlx5_read_clock(struct rte_eth_dev *dev, uint64_t *clock) {
> + struct priv *priv = dev->data->dev_private;
> + struct ibv_values_ex values;
> + int err = 0;
> +
> + values.comp_mask = IBV_VALUES_MASK_RAW_CLOCK;
> + err = mlx5_glue->query_rt_values_ex(priv->ctx, &values);
> + if (err != 0) {
> + DRV_LOG(WARNING, "Could not query the clock !");
> + return err;
> + }
> +
Above space is not needed.
> + *clock = values.raw_clock.tv_nsec;
> + return 0;
> +}
> +
> +
> /**
> * Get supported packet types.
> *
> diff --git a/drivers/net/mlx5/mlx5_glue.c b/drivers/net/mlx5/mlx5_glue.c
> index dd10ad6de..e23296519 100644
> --- a/drivers/net/mlx5/mlx5_glue.c
> +++ b/drivers/net/mlx5/mlx5_glue.c
> @@ -86,6 +86,13 @@ mlx5_glue_query_device_ex(struct ibv_context
> *context,
> return ibv_query_device_ex(context, input, attr); }
>
> +static int
> +mlx5_glue_query_rt_values_ex(struct ibv_context *context,
> + struct ibv_values_ex *values)
> +{
> + return ibv_query_rt_values_ex(context, values); }
> +
> static int
> mlx5_glue_query_port(struct ibv_context *context, uint8_t port_num,
> struct ibv_port_attr *port_attr) @@ -491,6 +498,7 @@
> const struct mlx5_glue *mlx5_glue = &(const struct mlx5_glue){
> .close_device = mlx5_glue_close_device,
> .query_device = mlx5_glue_query_device,
> .query_device_ex = mlx5_glue_query_device_ex,
> + .query_rt_values_ex = mlx5_glue_query_rt_values_ex,
> .query_port = mlx5_glue_query_port,
> .create_comp_channel = mlx5_glue_create_comp_channel,
> .destroy_comp_channel = mlx5_glue_destroy_comp_channel, diff --
> git a/drivers/net/mlx5/mlx5_glue.h b/drivers/net/mlx5/mlx5_glue.h index
> 2d92ba8bc..31ebee72a 100644
> --- a/drivers/net/mlx5/mlx5_glue.h
> +++ b/drivers/net/mlx5/mlx5_glue.h
> @@ -70,6 +70,8 @@ struct mlx5_glue {
> int (*query_device_ex)(struct ibv_context *context,
> const struct ibv_query_device_ex_input *input,
> struct ibv_device_attr_ex *attr);
> + int (*query_rt_values_ex)(struct ibv_context *context,
> + struct ibv_values_ex *values);
You need to bump up the LIB_GLUE_VERSION to 19.02 on the makefile(s) as you
change the lib glue ABI.
> int (*query_port)(struct ibv_context *context, uint8_t port_num,
> struct ibv_port_attr *port_attr);
> struct ibv_comp_channel *(*create_comp_channel)
> --
> 2.17.1
