[dpdk-dev] [PATCH v4 12/44] net/virtio: add callback for device closing

[Maxime Coquelin <maxime.coquelin@redhat.com>]

This patch introduces a new callback for device closing,
making virtio_dev_close() bus-agnostic.

Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>
Reviewed-by: David Marchand <david.marchand@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 fb789460e8..84edcd4724 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 6d9c712fd5..ea4ab381a6 100644
--- a/drivers/net/virtio/virtio_pci.c
+++ b/drivers/net/virtio/virtio_pci.c
@@ -297,6 +297,17 @@ legacy_intr_detect(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_detect	= legacy_intr_detect,
+	.dev_close	= legacy_dev_close,
 };
 
 static inline void
@@ -511,6 +523,16 @@ modern_intr_detect(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_detect	= modern_intr_detect,
+	.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 4c22692414..0515bbb247 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_detect)(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