[Minios-devel] [UNIKRAFT PATCH] driver/virtio: Configure the max desc as default

[Sharan Santhanam <sharan.santhanam@xxxxxxxxx>]

As a part of this patch, we configure the max queue size as the
configuration for the number descriptor if the user set the number
of descriptors to zero.

Signed-off-by: Sharan Santhanam <sharan.santhanam@xxxxxxxxx>
---
 plat/drivers/virtio/virtio_net.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/plat/drivers/virtio/virtio_net.c b/plat/drivers/virtio/virtio_net.c
index e2b19c0..14e8a27 100644
--- a/plat/drivers/virtio/virtio_net.c
+++ b/plat/drivers/virtio/virtio_net.c
@@ -629,6 +629,9 @@ static int virtio_netdev_vqueue_setup(struct 
virtio_net_device *vndev,
                return -ENOBUFS;
        }
 
+       nr_desc = (nr_desc != 0) ? nr_desc : max_desc;
+       uk_pr_debug("Configuring the %d descriptors\n", nr_desc);
+
        /* Check if the descriptor is a power of 2 */
        if (unlikely(nr_desc & (nr_desc - 1))) {
                uk_pr_err("Expect descriptor count as a power 2\n");
-- 
2.7.4


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