[dpdk-dev] [PATCH v3 6/9] virtio: Don't depend on struct rte_eth_dev's pci_dev
Jan Blunck
jblunck at infradead.org
Tue Dec 20 12:11:52 CET 2016
We don't need to depend on rte_eth_dev->pci_dev to differentiate between
the virtio_user and the virtio_pci case. Instead we can use the private
virtio_hw struct to get that information.
Signed-off-by: Jan Blunck <jblunck at infradead.org>
---
drivers/net/virtio/virtio_ethdev.c | 21 ++++++++++-----------
1 file changed, 10 insertions(+), 11 deletions(-)
diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c
index da9668e..023101d 100644
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -483,11 +483,11 @@ virtio_init_queue(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx)
hw->cvq = cvq;
}
- /* For virtio_user case (that is when dev->pci_dev is NULL), we use
+ /* For virtio_user case (that is when hw->dev is NULL), we use
* virtual address. And we need properly set _offset_, please see
* VIRTIO_MBUF_DATA_DMA_ADDR in virtqueue.h for more information.
*/
- if (dev->pci_dev)
+ if (hw->dev)
vq->offset = offsetof(struct rte_mbuf, buf_physaddr);
else {
vq->vq_ring_mem = (uintptr_t)mz->addr;
@@ -1190,7 +1190,7 @@ virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features)
struct virtio_hw *hw = eth_dev->data->dev_private;
struct virtio_net_config *config;
struct virtio_net_config local_config;
- struct rte_pci_device *pci_dev = eth_dev->pci_dev;
+ struct rte_pci_device *pci_dev = hw->dev;
int ret;
/* Reset the device although not necessary at startup */
@@ -1294,7 +1294,6 @@ int
eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
{
struct virtio_hw *hw = eth_dev->data->dev_private;
- struct rte_pci_device *pci_dev;
uint32_t dev_flags = RTE_ETH_DEV_DETACHABLE;
int ret;
@@ -1317,10 +1316,11 @@ eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
return -ENOMEM;
}
- pci_dev = eth_dev->pci_dev;
-
- if (pci_dev) {
- ret = vtpci_init(pci_dev, hw, &dev_flags);
+ /* For virtio_user case the hw->virtio_user_dev is populated by
+ * virtio_user_eth_dev_alloc() before eth_virtio_dev_init() is called.
+ */
+ if (!hw->virtio_user_dev) {
+ ret = vtpci_init(ETH_DEV_PCI_DEV(eth_dev), hw, &dev_flags);
if (ret)
return ret;
}
@@ -1343,7 +1343,6 @@ eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
static int
eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
{
- struct rte_pci_device *pci_dev;
struct virtio_hw *hw = eth_dev->data->dev_private;
PMD_INIT_FUNC_TRACE();
@@ -1353,7 +1352,6 @@ eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
virtio_dev_stop(eth_dev);
virtio_dev_close(eth_dev);
- pci_dev = eth_dev->pci_dev;
eth_dev->dev_ops = NULL;
eth_dev->tx_pkt_burst = NULL;
@@ -1367,7 +1365,8 @@ eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
rte_intr_callback_unregister(vtpci_intr_handle(hw),
virtio_interrupt_handler,
eth_dev);
- rte_eal_pci_unmap_device(pci_dev);
+ if (hw->dev)
+ rte_eal_pci_unmap_device(hw->dev);
PMD_INIT_LOG(DEBUG, "dev_uninit completed");
--
2.7.4
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