[dpdk-dev,v7,3/9] ethdev: add generic create/destroy ethdev APIs
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Commit Message
Add new bus generic ethdev create/destroy APIs which are bus independent
and provide hooks for bus specific initialisation.
Signed-off-by: Declan Doherty <declan.doherty@intel.com>
---
lib/librte_ether/rte_ethdev.c | 95 ++++++++++++++++++++++++++++++++-
lib/librte_ether/rte_ethdev_driver.h | 57 ++++++++++++++++++++
lib/librte_ether/rte_ethdev_pci.h | 12 +++++
lib/librte_ether/rte_ethdev_version.map | 8 +++
4 files changed, 171 insertions(+), 1 deletion(-)
Comments
Hi Declan,
> Add new bus generic ethdev create/destroy APIs which are bus independent
> and provide hooks for bus specific initialisation.
>
> Signed-off-by: Declan Doherty <declan.doherty@intel.com>
> ---
> lib/librte_ether/rte_ethdev.c | 95 ++++++++++++++++++++++++++++++++-
> lib/librte_ether/rte_ethdev_driver.h | 57 ++++++++++++++++++++
> lib/librte_ether/rte_ethdev_pci.h | 12 +++++
> lib/librte_ether/rte_ethdev_version.map | 8 +++
> 4 files changed, 171 insertions(+), 1 deletion(-)
>
> diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
> index 3c049ef43..b16d23b9a 100644
> --- a/lib/librte_ether/rte_ethdev.c
> +++ b/lib/librte_ether/rte_ethdev.c
> @@ -348,7 +348,8 @@ rte_eth_dev_release_port(struct rte_eth_dev *eth_dev)
> rte_eth_dev_shared_data_prepare();
>
> rte_spinlock_lock(&rte_eth_dev_shared_data->ownership_lock);
> -
> + eth_dev->device = NULL;
> + eth_dev->intr_handle = NULL;
> eth_dev->state = RTE_ETH_DEV_UNUSED;
>
> memset(eth_dev->data, 0, sizeof(struct rte_eth_dev_data));
> @@ -3439,6 +3440,98 @@ rte_eth_dma_zone_reserve(const struct rte_eth_dev *dev, const char *ring_name,
> RTE_MEMZONE_IOVA_CONTIG, align);
> }
>
> +int __rte_experimental
> +rte_eth_dev_create(struct rte_device *device, const char *name,
> + size_t priv_data_size,
> + ethdev_bus_specific_init ethdev_bus_specific_init,
> + void *bus_init_params,
> + ethdev_init_t ethdev_init, void *init_params)
> +{
> + struct rte_eth_dev *ethdev;
> + int retval;
> +
> + if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
> + ethdev = rte_eth_dev_allocate(name);
> + if (!ethdev) {
> + retval = -ENODEV;
> + goto probe_failed;
> + }
> +
> + if (priv_data_size) {
> + ethdev->data->dev_private = rte_zmalloc_socket(
> + name, priv_data_size, RTE_CACHE_LINE_SIZE,
> + device->numa_node);
> +
> + if (!ethdev->data->dev_private) {
> + RTE_LOG(ERR, EAL, "failed to allocate private data");
> + retval = -ENOMEM;
> + goto probe_failed;
> + }
> + }
> + } else {
> + ethdev = rte_eth_dev_attach_secondary(name);
> + if (!ethdev) {
> + RTE_LOG(ERR, EAL, "secondary process attach failed, "
> + "ethdev doesn't exist");
> + retval = -ENODEV;
> + goto probe_failed;
> + }
> + }
> +
> + ethdev->device = device;
> +
> + if (ethdev_bus_specific_init) {
> + retval = ethdev_bus_specific_init(ethdev, bus_init_params);
> + if (retval) {
> + RTE_LOG(ERR, EAL,
> + "ethdev bus specific initialisation failed");
> + goto probe_failed;
> + }
> + }
> +
> + RTE_FUNC_PTR_OR_ERR_RET(*ethdev_init, -EINVAL);
You probably have to do it at the start - before allocating ethdev, etc.
> + retval = ethdev_init(ethdev, init_params);
> + if (retval) {
> + RTE_LOG(ERR, EAL, "ethdev initialisation failed");
> + goto probe_failed;
> + }
> +
> + return retval;
> +probe_failed:
> + /* free ports private data if primary process */
> + if (rte_eal_process_type() == RTE_PROC_PRIMARY)
> + rte_free(ethdev->data->dev_private);
> +
> + rte_eth_dev_release_port(ethdev);
> +
> + return retval;
> +}
> +
> +int __rte_experimental
> +rte_eth_dev_destroy(struct rte_eth_dev *ethdev,
> + ethdev_uninit_t ethdev_uninit)
> +{
> + int ret;
> +
> + ethdev = rte_eth_dev_allocated(ethdev->data->name);
> + if (!ethdev)
> + return -ENODEV;
> +
> + RTE_FUNC_PTR_OR_ERR_RET(*ethdev_uninit, -EINVAL);
> + if (ethdev_uninit) {
> + ret = ethdev_uninit(ethdev);
> + if (ret)
> + return ret;
> + }
> +
> + if (rte_eal_process_type() == RTE_PROC_PRIMARY)
> + rte_free(ethdev->data->dev_private);
> +
> + ethdev->data->dev_private = NULL;
> +
> + return rte_eth_dev_release_port(ethdev);
> +}
> +
> int
> rte_eth_dev_rx_intr_ctl_q(uint16_t port_id, uint16_t queue_id,
> int epfd, int op, void *data)
> diff --git a/lib/librte_ether/rte_ethdev_driver.h b/lib/librte_ether/rte_ethdev_driver.h
> index a406ef123..e52add0ad 100644
> --- a/lib/librte_ether/rte_ethdev_driver.h
> +++ b/lib/librte_ether/rte_ethdev_driver.h
> @@ -188,6 +188,63 @@ rte_eth_linkstatus_get(const struct rte_eth_dev *dev,
> #endif
> }
>
> +
> +typedef int (*ethdev_init_t)(struct rte_eth_dev *ethdev, void *init_params);
> +typedef int (*ethdev_bus_specific_init)(struct rte_eth_dev *ethdev,
> + void *bus_specific_init_params);
> +
> +/**
> + * @warning
> + * @b EXPERIMENTAL: this API may change without prior notice.
> + *
> + * PMD helper function for the creation of a new ethdev ports.
> + *
> + * @param device
> + * rte_device handle.
> + * @param name
> + * port name.
> + * @param priv_data_size
> + * size of private data required for port.
> + * @param bus_specific_init
> + * port bus specific initialisation callback function
> + * @param bus_init_params
> + * port bus specific initialisation parameters
> + * @param ethdev_init
> + * device specific port initialization callback function
> + * @param init_params
> + * port initialisation parameters
> + *
> + * @return
> + * Negative errno value on error, 0 on success.
> + */
> +int __rte_experimental
> +rte_eth_dev_create(struct rte_device *device, const char *name,
> + size_t priv_data_size,
> + ethdev_bus_specific_init bus_specific_init, void *bus_init_params,
> + ethdev_init_t ethdev_init, void *init_params);
> +
> +
> +typedef int (*ethdev_uninit_t)(struct rte_eth_dev *ethdev);
> +
> +/**
> + * @warning
> + * @b EXPERIMENTAL: this API may change without prior notice.
> + *
> + * PMD helper function for cleaing up the resources of a ethdev port on it's
> + * destruction.
> + *
> + * @param ethdev
> + * ethdev handle of port.
> + * @param ethdev
> + * device specific port un-initialise callback function
> + *
> + * @return
> + * Negative errno value on error, 0 on success.
> + */
> +int __rte_experimental
> +rte_eth_dev_destroy(struct rte_eth_dev *ethdev,
> + ethdev_uninit_t ethdev_uninit);
> +
> #ifdef __cplusplus
> }
> #endif
> diff --git a/lib/librte_ether/rte_ethdev_pci.h b/lib/librte_ether/rte_ethdev_pci.h
> index 6565ae7d3..603287c28 100644
> --- a/lib/librte_ether/rte_ethdev_pci.h
> +++ b/lib/librte_ether/rte_ethdev_pci.h
> @@ -70,6 +70,18 @@ rte_eth_copy_pci_info(struct rte_eth_dev *eth_dev,
> eth_dev->data->numa_node = pci_dev->device.numa_node;
> }
>
> +static inline int
> +eth_dev_pci_specific_init(struct rte_eth_dev *eth_dev, void *bus_device) {
> + struct rte_pci_device *pci_dev = bus_device;
> +
> + if (!pci_dev)
> + return -ENODEV;
> +
> + rte_eth_copy_pci_info(eth_dev, pci_dev);
> +
> + return 0;
> +}
> +
> /**
> * @internal
> * Allocates a new ethdev slot for an ethernet device and returns the pointer
> diff --git a/lib/librte_ether/rte_ethdev_version.map b/lib/librte_ether/rte_ethdev_version.map
> index 34df6c8b5..bd7232923 100644
> --- a/lib/librte_ether/rte_ethdev_version.map
> +++ b/lib/librte_ether/rte_ethdev_version.map
> @@ -229,3 +229,11 @@ EXPERIMENTAL {
> rte_mtr_stats_update;
>
> } DPDK_17.11;
> +
> +EXPERIMENTAL {
> + global:
> +
> + rte_eth_dev_create;
> + rte_eth_dev_destroy;
> +
> +} DPDK_18.05;
> --
> 2.14.3
16/04/2018 15:05, Declan Doherty:
> --- a/lib/librte_ether/rte_ethdev.c
> +++ b/lib/librte_ether/rte_ethdev.c
> @@ -348,7 +348,8 @@ rte_eth_dev_release_port(struct rte_eth_dev *eth_dev)
> rte_eth_dev_shared_data_prepare();
>
> rte_spinlock_lock(&rte_eth_dev_shared_data->ownership_lock);
> -
> + eth_dev->device = NULL;
> + eth_dev->intr_handle = NULL;
> eth_dev->state = RTE_ETH_DEV_UNUSED;
Shouldn't it be in a separate patch with a proper explanation?
> + * @param device
> + * rte_device handle.
> + * @param name
There is a tab between param and name.
> --- a/lib/librte_ether/rte_ethdev_version.map
> +++ b/lib/librte_ether/rte_ethdev_version.map
> @@ -229,3 +229,11 @@ EXPERIMENTAL {
> rte_mtr_stats_update;
>
> } DPDK_17.11;
> +
> +EXPERIMENTAL {
> + global:
> +
> + rte_eth_dev_create;
> + rte_eth_dev_destroy;
> +
> +} DPDK_18.05;
There is already an EXPERIMENTAL block.
Maybe you need to rebase.
@@ -348,7 +348,8 @@ rte_eth_dev_release_port(struct rte_eth_dev *eth_dev)
rte_eth_dev_shared_data_prepare();
rte_spinlock_lock(&rte_eth_dev_shared_data->ownership_lock);
-
+ eth_dev->device = NULL;
+ eth_dev->intr_handle = NULL;
eth_dev->state = RTE_ETH_DEV_UNUSED;
memset(eth_dev->data, 0, sizeof(struct rte_eth_dev_data));
@@ -3439,6 +3440,98 @@ rte_eth_dma_zone_reserve(const struct rte_eth_dev *dev, const char *ring_name,
RTE_MEMZONE_IOVA_CONTIG, align);
}
+int __rte_experimental
+rte_eth_dev_create(struct rte_device *device, const char *name,
+ size_t priv_data_size,
+ ethdev_bus_specific_init ethdev_bus_specific_init,
+ void *bus_init_params,
+ ethdev_init_t ethdev_init, void *init_params)
+{
+ struct rte_eth_dev *ethdev;
+ int retval;
+
+ if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
+ ethdev = rte_eth_dev_allocate(name);
+ if (!ethdev) {
+ retval = -ENODEV;
+ goto probe_failed;
+ }
+
+ if (priv_data_size) {
+ ethdev->data->dev_private = rte_zmalloc_socket(
+ name, priv_data_size, RTE_CACHE_LINE_SIZE,
+ device->numa_node);
+
+ if (!ethdev->data->dev_private) {
+ RTE_LOG(ERR, EAL, "failed to allocate private data");
+ retval = -ENOMEM;
+ goto probe_failed;
+ }
+ }
+ } else {
+ ethdev = rte_eth_dev_attach_secondary(name);
+ if (!ethdev) {
+ RTE_LOG(ERR, EAL, "secondary process attach failed, "
+ "ethdev doesn't exist");
+ retval = -ENODEV;
+ goto probe_failed;
+ }
+ }
+
+ ethdev->device = device;
+
+ if (ethdev_bus_specific_init) {
+ retval = ethdev_bus_specific_init(ethdev, bus_init_params);
+ if (retval) {
+ RTE_LOG(ERR, EAL,
+ "ethdev bus specific initialisation failed");
+ goto probe_failed;
+ }
+ }
+
+ RTE_FUNC_PTR_OR_ERR_RET(*ethdev_init, -EINVAL);
+ retval = ethdev_init(ethdev, init_params);
+ if (retval) {
+ RTE_LOG(ERR, EAL, "ethdev initialisation failed");
+ goto probe_failed;
+ }
+
+ return retval;
+probe_failed:
+ /* free ports private data if primary process */
+ if (rte_eal_process_type() == RTE_PROC_PRIMARY)
+ rte_free(ethdev->data->dev_private);
+
+ rte_eth_dev_release_port(ethdev);
+
+ return retval;
+}
+
+int __rte_experimental
+rte_eth_dev_destroy(struct rte_eth_dev *ethdev,
+ ethdev_uninit_t ethdev_uninit)
+{
+ int ret;
+
+ ethdev = rte_eth_dev_allocated(ethdev->data->name);
+ if (!ethdev)
+ return -ENODEV;
+
+ RTE_FUNC_PTR_OR_ERR_RET(*ethdev_uninit, -EINVAL);
+ if (ethdev_uninit) {
+ ret = ethdev_uninit(ethdev);
+ if (ret)
+ return ret;
+ }
+
+ if (rte_eal_process_type() == RTE_PROC_PRIMARY)
+ rte_free(ethdev->data->dev_private);
+
+ ethdev->data->dev_private = NULL;
+
+ return rte_eth_dev_release_port(ethdev);
+}
+
int
rte_eth_dev_rx_intr_ctl_q(uint16_t port_id, uint16_t queue_id,
int epfd, int op, void *data)
@@ -188,6 +188,63 @@ rte_eth_linkstatus_get(const struct rte_eth_dev *dev,
#endif
}
+
+typedef int (*ethdev_init_t)(struct rte_eth_dev *ethdev, void *init_params);
+typedef int (*ethdev_bus_specific_init)(struct rte_eth_dev *ethdev,
+ void *bus_specific_init_params);
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice.
+ *
+ * PMD helper function for the creation of a new ethdev ports.
+ *
+ * @param device
+ * rte_device handle.
+ * @param name
+ * port name.
+ * @param priv_data_size
+ * size of private data required for port.
+ * @param bus_specific_init
+ * port bus specific initialisation callback function
+ * @param bus_init_params
+ * port bus specific initialisation parameters
+ * @param ethdev_init
+ * device specific port initialization callback function
+ * @param init_params
+ * port initialisation parameters
+ *
+ * @return
+ * Negative errno value on error, 0 on success.
+ */
+int __rte_experimental
+rte_eth_dev_create(struct rte_device *device, const char *name,
+ size_t priv_data_size,
+ ethdev_bus_specific_init bus_specific_init, void *bus_init_params,
+ ethdev_init_t ethdev_init, void *init_params);
+
+
+typedef int (*ethdev_uninit_t)(struct rte_eth_dev *ethdev);
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice.
+ *
+ * PMD helper function for cleaing up the resources of a ethdev port on it's
+ * destruction.
+ *
+ * @param ethdev
+ * ethdev handle of port.
+ * @param ethdev
+ * device specific port un-initialise callback function
+ *
+ * @return
+ * Negative errno value on error, 0 on success.
+ */
+int __rte_experimental
+rte_eth_dev_destroy(struct rte_eth_dev *ethdev,
+ ethdev_uninit_t ethdev_uninit);
+
#ifdef __cplusplus
}
#endif
@@ -70,6 +70,18 @@ rte_eth_copy_pci_info(struct rte_eth_dev *eth_dev,
eth_dev->data->numa_node = pci_dev->device.numa_node;
}
+static inline int
+eth_dev_pci_specific_init(struct rte_eth_dev *eth_dev, void *bus_device) {
+ struct rte_pci_device *pci_dev = bus_device;
+
+ if (!pci_dev)
+ return -ENODEV;
+
+ rte_eth_copy_pci_info(eth_dev, pci_dev);
+
+ return 0;
+}
+
/**
* @internal
* Allocates a new ethdev slot for an ethernet device and returns the pointer
@@ -229,3 +229,11 @@ EXPERIMENTAL {
rte_mtr_stats_update;
} DPDK_17.11;
+
+EXPERIMENTAL {
+ global:
+
+ rte_eth_dev_create;
+ rte_eth_dev_destroy;
+
+} DPDK_18.05;