From: Patrick Keroulas <patrick.kerou...@radio-canada.ca>
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/linux/mlx5_ethdev_os.c | 30 +++++++++++++++++++++++++
drivers/net/mlx5/linux/mlx5_os.c | 1 +
drivers/net/mlx5/mlx5.h | 1 +
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/linux/mlx5_ethdev_os.c
b/drivers/net/mlx5/linux/mlx5_ethdev_os.c
index ab47cb531..86bec111b 100644
--- a/drivers/net/mlx5/linux/mlx5_ethdev_os.c
+++ b/drivers/net/mlx5/linux/mlx5_ethdev_os.c
@@ -355,6 +355,36 @@ mlx5_set_flags(struct rte_eth_dev *dev, unsigned int keep,
unsigned int flags)
return mlx5_ifreq(dev, SIOCSIFFLAGS, &request);
}
+/**
+ * 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
*
diff --git a/drivers/net/mlx5/linux/mlx5_os.c b/drivers/net/mlx5/linux/mlx5_os.c
index 3792371c3..914e58f52 100644
--- a/drivers/net/mlx5/linux/mlx5_os.c
+++ b/drivers/net/mlx5/linux/mlx5_os.c
@@ -2408,6 +2408,7 @@ const struct eth_dev_ops mlx5_os_dev_sec_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,
.rx_descriptor_status = mlx5_rx_descriptor_status,
.tx_descriptor_status = mlx5_tx_descriptor_status,
.rxq_info_get = mlx5_rxq_info_get,
diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h
index 5bd5acd9d..dc469f7d9 100644
--- a/drivers/net/mlx5/mlx5.h
+++ b/drivers/net/mlx5/mlx5.h
@@ -738,6 +738,7 @@ int mlx5_get_mtu(struct rte_eth_dev *dev, uint16_t *mtu);
int mlx5_set_flags(struct rte_eth_dev *dev, unsigned int keep,
unsigned int flags);
int mlx5_set_mtu(struct rte_eth_dev *dev, uint16_t mtu);
+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_link_update(struct rte_eth_dev *dev, int wait_to_complete);
int mlx5_force_link_status_change(struct rte_eth_dev *dev, int status);
--
2.27.0
