This patch demonstrates how eth_driver can be replaced with appropriate
changes for rte_xxx_driver from the PMD itself. It uses ixgbe_ethernet as
an example.
A large set of changes exists in the rte_ethdev.c - primarily because too
much PCI centric code (names, assumption of rte_pci_device) still exists
in it. Most, except symbol naming, has been changed in this patch.
This proposes that:
- PMD would declare the rte_xxx_driver. In case of ixgbe, it would be
rte_pci_driver.
- Probe and remove continue to exists in rte_pci_driver. But, the
rte_driver has new hooks for init and uninit. The rationale is that
once a ethernet or cryto device is created, the rte_driver->init would
be responsible for initializing the device.
-- Eth_dev -> rte_driver -> rte_pci_driver
| `-> probe/remove
`--> init/uninit
- necessary changes in the rte_eth_dev have also been done so that it
refers to the rte_device and rte_driver rather than rte_xxx_*. This
would imply, ethernet device is 'linked' to a rte_device/rte_driver
which in turn is a rte_xxx_device/rte_xxx_driver type.
- for all operations related to extraction relvant xxx type,
container_of would have to be used.
Signed-off-by: Shreyansh Jain <shreyansh.jain at nxp.com>
---
drivers/net/ixgbe/ixgbe_ethdev.c | 49 +++++++++++++++++++++-------------------
lib/librte_ether/rte_ethdev.c | 36 +++++++++++++++++------------
lib/librte_ether/rte_ethdev.h | 6 ++---
3 files changed, 51 insertions(+), 40 deletions(-)
diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index edc9b22..acead31 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -1419,7 +1419,7 @@ eth_ixgbevf_dev_init(struct rte_eth_dev *eth_dev)
return 0;
}
- pci_dev = eth_dev->pci_dev;
+ pci_dev = container_of(eth_dev->device, struct rte_pci_device, device);
rte_eth_copy_pci_info(eth_dev, pci_dev);
@@ -1532,7 +1532,9 @@ static int
eth_ixgbevf_dev_uninit(struct rte_eth_dev *eth_dev)
{
struct ixgbe_hw *hw;
- struct rte_pci_device *pci_dev = eth_dev->pci_dev;
+ struct rte_pci_device *pci_dev;
+
+ pci_dev = container_of(eth_dev->device, struct rte_pci_device, device);
PMD_INIT_FUNC_TRACE();
@@ -1562,32 +1564,33 @@ eth_ixgbevf_dev_uninit(struct rte_eth_dev *eth_dev)
return 0;
}
-static struct eth_driver rte_ixgbe_pmd = {
- .pci_drv = {
- .id_table = pci_id_ixgbe_map,
- .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC |
- RTE_PCI_DRV_DETACHABLE,
- .probe = rte_eth_dev_pci_probe,
- .remove = rte_eth_dev_pci_remove,
+static struct rte_pci_driver rte_ixgbe_pci_driver = {
+ .id_table = pci_id_ixgbe_map,
+ .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC |
+ RTE_PCI_DRV_DETACHABLE,
+ .probe = rte_eth_dev_pci_probe,
+ .remove = rte_eth_dev_pci_remove,
+ .driver = {
+ .driver_init_t= eth_ixgbe_dev_init,
+ .driver_uninit_t= eth_ixgbe_dev_uninit,
+ .dev_private_size = sizeof(struct ixgbe_adapter),
},
- .eth_dev_init = eth_ixgbe_dev_init,
- .eth_dev_uninit = eth_ixgbe_dev_uninit,
- .dev_private_size = sizeof(struct ixgbe_adapter),
};
/*
* virtual function driver struct
*/
-static struct eth_driver rte_ixgbevf_pmd = {
- .pci_drv = {
- .id_table = pci_id_ixgbevf_map,
- .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_DETACHABLE,
- .probe = rte_eth_dev_pci_probe,
- .remove = rte_eth_dev_pci_remove,
+static struct rte_pci_driver rte_ixgbevf_pci_driver = {
+ .id_table = pci_id_ixgbevf_map,
+ .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_DETACHABLE,
+ .probe = rte_eth_dev_pci_probe,
+ .remove = rte_eth_dev_pci_remove,
+ .driver = {
+ /* rte_driver hooks */
+ .init = eth_ixgbevf_dev_init,
+ .uninit = eth_ixgbevf_dev_uninit,
+ .dev_private_size = sizeof(struct ixgbe_adapter),
},
- .eth_dev_init = eth_ixgbevf_dev_init,
- .eth_dev_uninit = eth_ixgbevf_dev_uninit,
- .dev_private_size = sizeof(struct ixgbe_adapter),
};
static int
@@ -7592,7 +7595,7 @@ ixgbevf_dev_interrupt_handler(__rte_unused struct
rte_intr_handle *handle,
ixgbevf_dev_interrupt_action(dev);
}
-RTE_PMD_REGISTER_PCI(net_ixgbe, rte_ixgbe_pmd.pci_drv);
+RTE_PMD_REGISTER_PCI(net_ixgbe, rte_ixgbe_pci_driver);
RTE_PMD_REGISTER_PCI_TABLE(net_ixgbe, pci_id_ixgbe_map);
-RTE_PMD_REGISTER_PCI(net_ixgbe_vf, rte_ixgbevf_pmd.pci_drv);
+RTE_PMD_REGISTER_PCI(net_ixgbe_vf, rte_ixgbevf_pci_driver);
RTE_PMD_REGISTER_PCI_TABLE(net_ixgbe_vf, pci_id_ixgbevf_map);
diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index fde8112..3535ff4 100644
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -235,13 +235,13 @@ int
rte_eth_dev_pci_probe(struct rte_pci_driver *pci_drv,
struct rte_pci_device *pci_dev)
{
- struct eth_driver *eth_drv;
+ struct rte_driver *drv;
struct rte_eth_dev *eth_dev;
char ethdev_name[RTE_ETH_NAME_MAX_LEN];
int diag;
- eth_drv = (struct eth_driver *)pci_drv;
+ drv = pci_drv->driver;
rte_eal_pci_device_name(&pci_dev->addr, ethdev_name,
sizeof(ethdev_name));
@@ -252,13 +252,13 @@ rte_eth_dev_pci_probe(struct rte_pci_driver *pci_drv,
if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
eth_dev->data->dev_private = rte_zmalloc("ethdev private
structure",
- eth_drv->dev_private_size,
+ drv->dev_private_size,
RTE_CACHE_LINE_SIZE);
if (eth_dev->data->dev_private == NULL)
rte_panic("Cannot allocate memzone for private port
data\n");
}
- eth_dev->pci_dev = pci_dev;
- eth_dev->driver = eth_drv;
+ eth_dev->device = pci_dev->device;
+ eth_dev->driver = drv;
eth_dev->data->rx_mbuf_alloc_failed = 0;
/* init user callbacks */
@@ -270,7 +270,7 @@ rte_eth_dev_pci_probe(struct rte_pci_driver *pci_drv,
eth_dev->data->mtu = ETHER_MTU;
/* Invoke PMD device initialization function */
- diag = (*eth_drv->eth_dev_init)(eth_dev);
+ diag = (*drv->init)(eth_dev);
if (diag == 0)
return 0;
@@ -287,7 +287,7 @@ rte_eth_dev_pci_probe(struct rte_pci_driver *pci_drv,
int
rte_eth_dev_pci_remove(struct rte_pci_device *pci_dev)
{
- const struct eth_driver *eth_drv;
+ const struct rte_driver *drv;
struct rte_eth_dev *eth_dev;
char ethdev_name[RTE_ETH_NAME_MAX_LEN];
int ret;
@@ -302,11 +302,11 @@ rte_eth_dev_pci_remove(struct rte_pci_device *pci_dev)
if (eth_dev == NULL)
return -ENODEV;
- eth_drv = (const struct eth_driver *)pci_dev->driver;
+ drv = pci_dev->driver;
/* Invoke PMD device uninit function */
- if (*eth_drv->eth_dev_uninit) {
- ret = (*eth_drv->eth_dev_uninit)(eth_dev);
+ if (*drv->uninit) {
+ ret = (*drv->uninit)(eth_dev);
if (ret)
return ret;
}
@@ -317,7 +317,7 @@ rte_eth_dev_pci_remove(struct rte_pci_device *pci_dev)
if (rte_eal_process_type() == RTE_PROC_PRIMARY)
rte_free(eth_dev->data->dev_private);
- eth_dev->pci_dev = NULL;
+ eth_dev->device = NULL;
eth_dev->driver = NULL;
eth_dev->data = NULL;
@@ -1556,7 +1556,7 @@ rte_eth_dev_info_get(uint8_t port_id, struct
rte_eth_dev_info *dev_info)
RTE_FUNC_PTR_OR_RET(*dev->dev_ops->dev_infos_get);
(*dev->dev_ops->dev_infos_get)(dev, dev_info);
- dev_info->pci_dev = dev->pci_dev;
+ dev_info->device = dev->device;
dev_info->driver_name = dev->data->drv_name;
dev_info->nb_rx_queues = dev->data->nb_rx_queues;
dev_info->nb_tx_queues = dev->data->nb_tx_queues;
@@ -2537,6 +2537,7 @@ rte_eth_dev_rx_intr_ctl(uint8_t port_id, int epfd, int
op, void *data)
{
uint32_t vec;
struct rte_eth_dev *dev;
+ struct rte_pci_device *pci_dev;
struct rte_intr_handle *intr_handle;
uint16_t qid;
int rc;
@@ -2544,6 +2545,10 @@ rte_eth_dev_rx_intr_ctl(uint8_t port_id, int epfd, int
op, void *data)
RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
dev = &rte_eth_devices[port_id];
+ /* TODO intr_handle is currently in rte_pci_device;
+ * Below is incorrect until that time
+ */
+ pci_dev = container_of(dev->device, struct rte_pci_device, device);
intr_handle = &dev->pci_dev->intr_handle;
if (!intr_handle->intr_vec) {
RTE_PMD_DEBUG_TRACE("RX Intr vector unset\n");
@@ -2572,7 +2577,7 @@ rte_eth_dma_zone_reserve(const struct rte_eth_dev *dev,
const char *ring_name,
const struct rte_memzone *mz;
snprintf(z_name, sizeof(z_name), "%s_%s_%d_%d",
- dev->driver->pci_drv.driver.name, ring_name,
+ dev->driver->name, ring_name,
dev->data->port_id, queue_id);
mz = rte_memzone_lookup(z_name);
@@ -2593,6 +2598,7 @@ rte_eth_dev_rx_intr_ctl_q(uint8_t port_id, uint16_t
queue_id,
{
uint32_t vec;
struct rte_eth_dev *dev;
+ struct rte_pci_device *pci_dev;
struct rte_intr_handle *intr_handle;
int rc;
@@ -2604,7 +2610,9 @@ rte_eth_dev_rx_intr_ctl_q(uint8_t port_id, uint16_t
queue_id,
return -EINVAL;
}
- intr_handle = &dev->pci_dev->intr_handle;
+ /* TODO; Until intr_handle is available in rte_device, below is
incorrect */
+ pci_dev = container_of(dev->device, struct rte_pci_device, device);
+ intr_handle = &pci_dev->intr_handle;
if (!intr_handle->intr_vec) {
RTE_PMD_DEBUG_TRACE("RX Intr vector unset\n");
return -EPERM;
diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
index 38641e8..2b1d826 100644
--- a/lib/librte_ether/rte_ethdev.h
+++ b/lib/librte_ether/rte_ethdev.h
@@ -876,7 +876,7 @@ struct rte_eth_conf {
* Ethernet device information
*/
struct rte_eth_dev_info {
- struct rte_pci_device *pci_dev; /**< Device PCI information. */
+ struct rte_device *device; /**< Device PCI information. */
const char *driver_name; /**< Device Driver name. */
unsigned int if_index; /**< Index to bound host interface, or 0 if none.
Use if_indextoname() to translate into an interface name. */
@@ -1623,9 +1623,9 @@ struct rte_eth_dev {
eth_rx_burst_t rx_pkt_burst; /**< Pointer to PMD receive function. */
eth_tx_burst_t tx_pkt_burst; /**< Pointer to PMD transmit function. */
struct rte_eth_dev_data *data; /**< Pointer to device data */
- const struct eth_driver *driver;/**< Driver for this device */
+ const struct rte_driver *driver;/**< Driver for this device */
const struct eth_dev_ops *dev_ops; /**< Functions exported by PMD */
- struct rte_pci_device *pci_dev; /**< PCI info. supplied by probing */
+ struct rte_device *device; /**< Device instance */
/** User application callbacks for NIC interrupts */
struct rte_eth_dev_cb_list link_intr_cbs;
/**
--
2.7.4
