Jiang Wang
2021-Jun-09 23:24 UTC
[RFC v1 5/6] vhost/vsock: add kconfig for vhost dgram support
Also change number of vqs according to the config
Signed-off-by: Jiang Wang <jiang.wang at bytedance.com>
---
drivers/vhost/Kconfig | 8 ++++++++
drivers/vhost/vsock.c | 11 ++++++++---
2 files changed, 16 insertions(+), 3 deletions(-)
diff --git a/drivers/vhost/Kconfig b/drivers/vhost/Kconfig
index 587fbae06182..d63fffee6007 100644
--- a/drivers/vhost/Kconfig
+++ b/drivers/vhost/Kconfig
@@ -61,6 +61,14 @@ config VHOST_VSOCK
To compile this driver as a module, choose M here: the module will be called
vhost_vsock.
+config VHOST_VSOCK_DGRAM
+ bool "vhost vsock datagram sockets support"
+ depends on VHOST_VSOCK
+ default n
+ help
+ Enable vhost-vsock to support datagram types vsock. The QEMU
+ and the guest must support datagram types too to use it.
+
config VHOST_VDPA
tristate "Vhost driver for vDPA-based backend"
depends on EVENTFD
diff --git a/drivers/vhost/vsock.c b/drivers/vhost/vsock.c
index d366463be6d4..12ca1dc0268f 100644
--- a/drivers/vhost/vsock.c
+++ b/drivers/vhost/vsock.c
@@ -48,7 +48,11 @@ static DEFINE_READ_MOSTLY_HASHTABLE(vhost_vsock_hash, 8);
struct vhost_vsock {
struct vhost_dev dev;
+#ifdef CONFIG_VHOST_VSOCK_DGRAM
struct vhost_virtqueue vqs[4];
+#else
+ struct vhost_virtqueue vqs[2];
+#endif
/* Link to global vhost_vsock_hash, writes use vhost_vsock_mutex */
struct hlist_node hash;
@@ -763,15 +767,16 @@ static int vhost_vsock_dev_open(struct inode *inode,
struct file *file)
vqs[VSOCK_VQ_TX] = &vsock->vqs[VSOCK_VQ_TX];
vqs[VSOCK_VQ_RX] = &vsock->vqs[VSOCK_VQ_RX];
- vqs[VSOCK_VQ_DGRAM_TX] = &vsock->vqs[VSOCK_VQ_DGRAM_TX];
- vqs[VSOCK_VQ_DGRAM_RX] = &vsock->vqs[VSOCK_VQ_DGRAM_RX];
vsock->vqs[VSOCK_VQ_TX].handle_kick = vhost_vsock_handle_tx_kick;
vsock->vqs[VSOCK_VQ_RX].handle_kick = vhost_vsock_handle_rx_kick;
+#ifdef CONFIG_VHOST_VSOCK_DGRAM
+ vqs[VSOCK_VQ_DGRAM_TX] = &vsock->vqs[VSOCK_VQ_DGRAM_TX];
+ vqs[VSOCK_VQ_DGRAM_RX] = &vsock->vqs[VSOCK_VQ_DGRAM_RX];
vsock->vqs[VSOCK_VQ_DGRAM_TX].handle_kick
vhost_vsock_handle_tx_kick;
vsock->vqs[VSOCK_VQ_DGRAM_RX].handle_kick
vhost_vsock_handle_rx_kick;
-
+#endif
vhost_dev_init(&vsock->dev, vqs, ARRAY_SIZE(vsock->vqs),
UIO_MAXIOV, VHOST_VSOCK_PKT_WEIGHT,
VHOST_VSOCK_WEIGHT, true, NULL);
--
2.11.0
Stefano Garzarella
2021-Jun-18 09:54 UTC
[RFC v1 5/6] vhost/vsock: add kconfig for vhost dgram support
On Wed, Jun 09, 2021 at 11:24:57PM +0000, Jiang Wang wrote:>Also change number of vqs according to the config > >Signed-off-by: Jiang Wang <jiang.wang at bytedance.com> >--- > drivers/vhost/Kconfig | 8 ++++++++ > drivers/vhost/vsock.c | 11 ++++++++--- > 2 files changed, 16 insertions(+), 3 deletions(-)As we already discussed, I think we don't need this patch. Thanks, Stefano