While some devices update their own clock info to provide current time,
mlx5dv part of libibverbs already handles this and also converts any raw
counter cycle to nanoseconds.
Signed-off-by: Patrick Keroulas <patrick.kerou...@radio-canada.ca>
---
drivers/common/mlx5/linux/mlx5_glue.c | 16 ++++++++++++++
drivers/common/mlx5/linux/mlx5_glue.h | 4 ++++
drivers/net/mlx5/mlx5.c | 1 +
drivers/net/mlx5/mlx5.h | 1 +
drivers/net/mlx5/mlx5_ethdev.c | 30 +++++++++++++++++++++++++++
5 files changed, 52 insertions(+)
diff --git a/drivers/common/mlx5/linux/mlx5_glue.c
b/drivers/common/mlx5/linux/mlx5_glue.c
index c91ee33bb..cac24015b 100644
--- a/drivers/common/mlx5/linux/mlx5_glue.c
+++ b/drivers/common/mlx5/linux/mlx5_glue.c
@@ -80,6 +80,20 @@ mlx5_glue_query_rt_values_ex(struct ibv_context *context,
return ibv_query_rt_values_ex(context, values);
}
+static int
+mlx5_glue_get_clock_info(struct ibv_context *context,
+ struct mlx5dv_clock_info *clock_info)
+{
+ return mlx5dv_get_clock_info(context, clock_info);
+}
+
+static uint64_t
+mlx5_glue_mlx5dv_ts_to_ns(struct mlx5dv_clock_info *clock_info,
+ uint64_t device_timestamp)
+{
+ return mlx5dv_ts_to_ns(clock_info, device_timestamp);
+}
+
static int
mlx5_glue_query_port(struct ibv_context *context, uint8_t port_num,
struct ibv_port_attr *port_attr)
@@ -1207,6 +1221,8 @@ const struct mlx5_glue *mlx5_glue = &(const struct
mlx5_glue) {
.query_device = mlx5_glue_query_device,
.query_device_ex = mlx5_glue_query_device_ex,
.query_rt_values_ex = mlx5_glue_query_rt_values_ex,
+ .get_clock_info = mlx5_glue_get_clock_info,
+ .convert_ts_to_ns = mlx5_glue_mlx5dv_ts_to_ns,
.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/common/mlx5/linux/mlx5_glue.h
b/drivers/common/mlx5/linux/mlx5_glue.h
index 5d238a40a..8d05e7398 100644
--- a/drivers/common/mlx5/linux/mlx5_glue.h
+++ b/drivers/common/mlx5/linux/mlx5_glue.h
@@ -123,6 +123,10 @@ struct mlx5_glue {
struct ibv_port_attr *port_attr);
struct ibv_comp_channel *(*create_comp_channel)
(struct ibv_context *context);
+ int (*get_clock_info)(struct ibv_context *context,
+ struct mlx5dv_clock_info *clock_info);
+ uint64_t (*convert_ts_to_ns)(struct mlx5dv_clock_info *clock_info,
+ uint64_t device_timestamp);
int (*destroy_comp_channel)(struct ibv_comp_channel *channel);
struct ibv_cq *(*create_cq)(struct ibv_context *context, int cqe,
void *cq_context,
diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c
index 7c5e23d9f..c14117f5b 100644
--- a/drivers/net/mlx5/mlx5.c
+++ b/drivers/net/mlx5/mlx5.c
@@ -1241,6 +1241,7 @@ const struct eth_dev_ops mlx5_dev_ops = {
.xstats_get_names = mlx5_xstats_get_names,
.fw_version_get = mlx5_fw_version_get,
.dev_infos_get = mlx5_dev_infos_get,
+ .convert_ts_to_ns = mlx5_convert_ts_to_ns,
.read_clock = mlx5_read_clock,
.dev_supported_ptypes_get = mlx5_dev_supported_ptypes_get,
.vlan_filter_set = mlx5_vlan_filter_set,
diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h
index 8c4b234e5..f4906a54e 100644
--- a/drivers/net/mlx5/mlx5.h
+++ b/drivers/net/mlx5/mlx5.h
@@ -720,6 +720,7 @@ int mlx5_set_flags(struct rte_eth_dev *dev, unsigned int
keep,
unsigned int flags);
int mlx5_dev_configure(struct rte_eth_dev *dev);
int mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info);
+int mlx5_convert_ts_to_ns(struct rte_eth_dev *dev, uint64_t *timestamp);
int mlx5_read_clock(struct rte_eth_dev *dev, uint64_t *clock);
int mlx5_fw_version_get(struct rte_eth_dev *dev, char *fw_ver, size_t fw_size);
const uint32_t *mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev);
diff --git a/drivers/net/mlx5/mlx5_ethdev.c b/drivers/net/mlx5/mlx5_ethdev.c
index 6b8b30322..374c9a226 100644
--- a/drivers/net/mlx5/mlx5_ethdev.c
+++ b/drivers/net/mlx5/mlx5_ethdev.c
@@ -690,6 +690,36 @@ mlx5_dev_infos_get(struct rte_eth_dev *dev, struct
rte_eth_dev_info *info)
return 0;
}
+/**
+ * Convert raw clock counter to nanoseconds
+ *
+ * @param dev
+ * Pointer to Ethernet device structure.
+ * @param[in&out] timestamp
+ * Pointer to the timestamp to be converted.
+ *
+ * @return
+ * 0 if the clock has correctly been read
+ * The value of errno in case of error
+ */
+int
+mlx5_convert_ts_to_ns(struct rte_eth_dev *dev, uint64_t *timestamp)
+{
+ struct mlx5_priv *priv = dev->data->dev_private;
+ struct ibv_context *ctx = priv->sh->ctx;
+ struct mlx5dv_clock_info clock_info;
+
+ int err = mlx5_glue->get_clock_info(ctx, &clock_info);
+ if (err != 0) {
+ DRV_LOG(WARNING, "Could not get the clock info!");
+ return err;
+ }
+
+ *timestamp = mlx5_glue->convert_ts_to_ns(&clock_info, *timestamp);
+
+ return err;
+}
+
/**
* Get device current raw clock counter
*
--
2.17.1
