[dpdk-dev] [PATCH v2 12/44] net/virtio: add callback for device closing
Maxime Coquelin
maxime.coquelin at redhat.com
Tue Jan 19 22:24:35 CET 2021
This patch introduces a new callback for device closing,
making virtio_dev_close() bus-agnostic.
Signed-off-by: Maxime Coquelin <maxime.coquelin at redhat.com>
Reviewed-by: Chenbo Xia <chenbo.xia at intel.com>
Reviewed-by: David Marchand <david.marchand at redhat.com>
---
drivers/net/virtio/meson.build | 2 --
drivers/net/virtio/virtio_ethdev.c | 13 +------------
drivers/net/virtio/virtio_pci.c | 25 +++++++++++++++++++++++++
drivers/net/virtio/virtio_pci.h | 2 ++
drivers/net/virtio/virtio_user_ethdev.c | 11 +++++++++++
5 files changed, 39 insertions(+), 14 deletions(-)
diff --git a/drivers/net/virtio/meson.build b/drivers/net/virtio/meson.build
index 07e085376b..f2873d6180 100644
--- a/drivers/net/virtio/meson.build
+++ b/drivers/net/virtio/meson.build
@@ -44,8 +44,6 @@ elif arch_subdir == 'arm' and host_machine.cpu_family().startswith('aarch64')
endif
if is_linux
- dpdk_conf.set('RTE_VIRTIO_USER', 1)
-
sources += files('virtio_user_ethdev.c',
'virtio_user/vhost_kernel.c',
'virtio_user/vhost_kernel_tap.c',
diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c
index da0e168355..7e2240fd79 100644
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -718,18 +718,7 @@ virtio_dev_close(struct rte_eth_dev *dev)
virtio_dev_free_mbufs(dev);
virtio_free_queues(hw);
-#ifdef RTE_VIRTIO_USER
- if (hw->bus_type == VIRTIO_BUS_USER)
- virtio_user_dev_uninit(dev->data->dev_private);
- else
-#endif
- if (dev->device) {
- rte_pci_unmap_device(RTE_ETH_DEV_TO_PCI(dev));
- if (hw->bus_type == VIRTIO_BUS_PCI_LEGACY)
- rte_pci_ioport_unmap(VTPCI_IO(hw));
- }
-
- return 0;
+ return VTPCI_OPS(hw)->dev_close(hw);
}
static int
diff --git a/drivers/net/virtio/virtio_pci.c b/drivers/net/virtio/virtio_pci.c
index 7475d5af3a..145bc38de3 100644
--- a/drivers/net/virtio/virtio_pci.c
+++ b/drivers/net/virtio/virtio_pci.c
@@ -297,6 +297,17 @@ legacy_intr_event(struct virtio_hw *hw)
hw->use_msix = vtpci_msix_detect(VTPCI_DEV(hw));
}
+static int
+legacy_dev_close(struct virtio_hw *hw)
+{
+ struct virtio_pci_dev *dev = virtio_pci_get_dev(hw);
+
+ rte_pci_unmap_device(dev->pci_dev);
+ rte_pci_ioport_unmap(VTPCI_IO(hw));
+
+ return 0;
+}
+
const struct virtio_pci_ops legacy_ops = {
.read_dev_cfg = legacy_read_dev_config,
.write_dev_cfg = legacy_write_dev_config,
@@ -312,6 +323,7 @@ const struct virtio_pci_ops legacy_ops = {
.del_queue = legacy_del_queue,
.notify_queue = legacy_notify_queue,
.intr_event = legacy_intr_event,
+ .dev_close = legacy_dev_close,
};
static inline void
@@ -511,6 +523,16 @@ modern_intr_event(struct virtio_hw *hw)
hw->use_msix = vtpci_msix_detect(VTPCI_DEV(hw));
}
+static int
+modern_dev_close(struct virtio_hw *hw)
+{
+ struct virtio_pci_dev *dev = virtio_pci_get_dev(hw);
+
+ rte_pci_unmap_device(dev->pci_dev);
+
+ return 0;
+}
+
const struct virtio_pci_ops modern_ops = {
.read_dev_cfg = modern_read_dev_config,
.write_dev_cfg = modern_write_dev_config,
@@ -526,6 +548,7 @@ const struct virtio_pci_ops modern_ops = {
.del_queue = modern_del_queue,
.notify_queue = modern_notify_queue,
.intr_event = modern_intr_event,
+ .dev_close = modern_dev_close,
};
@@ -757,6 +780,8 @@ vtpci_init(struct rte_pci_device *pci_dev, struct virtio_pci_dev *dev)
RTE_BUILD_BUG_ON(offsetof(struct virtio_pci_dev, hw) != 0);
+ dev->pci_dev = pci_dev;
+
/*
* Try if we can succeed reading virtio pci caps, which exists
* only on modern pci device. If failed, we fallback to legacy
diff --git a/drivers/net/virtio/virtio_pci.h b/drivers/net/virtio/virtio_pci.h
index 61850ec4b2..d1bed0ad59 100644
--- a/drivers/net/virtio/virtio_pci.h
+++ b/drivers/net/virtio/virtio_pci.h
@@ -240,6 +240,7 @@ struct virtio_pci_ops {
void (*del_queue)(struct virtio_hw *hw, struct virtqueue *vq);
void (*notify_queue)(struct virtio_hw *hw, struct virtqueue *vq);
void (*intr_event)(struct virtio_hw *hw);
+ int (*dev_close)(struct virtio_hw *hw);
};
struct virtio_net_config;
@@ -292,6 +293,7 @@ struct virtio_hw {
struct virtio_pci_dev {
struct virtio_hw hw;
+ struct rte_pci_device *pci_dev;
bool modern;
};
diff --git a/drivers/net/virtio/virtio_user_ethdev.c b/drivers/net/virtio/virtio_user_ethdev.c
index 241fe373b9..3cbf310c03 100644
--- a/drivers/net/virtio/virtio_user_ethdev.c
+++ b/drivers/net/virtio/virtio_user_ethdev.c
@@ -462,6 +462,16 @@ virtio_user_notify_queue(struct virtio_hw *hw, struct virtqueue *vq)
strerror(errno));
}
+static int
+virtio_user_dev_close(struct virtio_hw *hw)
+{
+ struct virtio_user_dev *dev = virtio_user_get_dev(hw);
+
+ virtio_user_dev_uninit(dev);
+
+ return 0;
+}
+
const struct virtio_pci_ops virtio_user_ops = {
.read_dev_cfg = virtio_user_read_dev_config,
.write_dev_cfg = virtio_user_write_dev_config,
@@ -476,6 +486,7 @@ const struct virtio_pci_ops virtio_user_ops = {
.setup_queue = virtio_user_setup_queue,
.del_queue = virtio_user_del_queue,
.notify_queue = virtio_user_notify_queue,
+ .dev_close = virtio_user_dev_close,
};
static const char *valid_args[] = {
--
2.29.2
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