Re: [Minios-devel] [UNIKRAFT PATCH 6/9] plat/xen/drivers/9p: Register 9P transport

[Costin Lupu <costin.lup@xxxxxxxxx>]

Reviewed-by: Costin Lupu <costin.lupu@xxxxxxxxx>

On 9/7/19 1:21 PM, Vlad-Andrei BĂDOIU (78692) wrote:
> From: Cristian Banu <cristb@xxxxxxxxx>
> 
> This patch adds stubs for the callbacks required by the transport layer
> and registers the transport with the 9P API.
> 
> Signed-off-by: Cristian Banu <cristb@xxxxxxxxx>
> ---
>  plat/xen/drivers/9p/9pfront.c | 37 ++++++++++++++++++++++++++++++++++-
>  1 file changed, 36 insertions(+), 1 deletion(-)
> 
> diff --git a/plat/xen/drivers/9p/9pfront.c b/plat/xen/drivers/9p/9pfront.c
> index 3898cb85..12591d07 100644
> --- a/plat/xen/drivers/9p/9pfront.c
> +++ b/plat/xen/drivers/9p/9pfront.c
> @@ -38,6 +38,9 @@
>  #include <uk/assert.h>
>  #include <uk/essentials.h>
>  #include <uk/list.h>
> +#include <uk/9pdev.h>
> +#include <uk/9preq.h>
> +#include <uk/9pdev_trans.h>
>  #include <uk/plat/spinlock.h>
>  #include <xen-x86/mm.h>
>  #include <xen-x86/irq.h>
> @@ -187,14 +190,46 @@ out:
>       return rc;
>  }
>  
> +static int p9front_connect(struct uk_9pdev *p9dev __unused,
> +                        const char *device_identifier __unused,
> +                        const char *mount_args __unused)
> +{
> +     return 0;
> +}
> +
> +static int p9front_disconnect(struct uk_9pdev *p9dev __unused)
> +{
> +     return 0;
> +}
> +
> +static int p9front_request(struct uk_9pdev *p9dev __unused,
> +                        struct uk_9preq *req __unused)
> +{
> +     return 0;
> +}
> +
> +static const struct uk_9pdev_trans_ops p9front_trans_ops = {
> +     .connect        = p9front_connect,
> +     .disconnect     = p9front_disconnect,
> +     .request        = p9front_request
> +};
> +
> +static struct uk_9pdev_trans p9front_trans = {
> +     .name           = "xen",
> +     .ops            = &p9front_trans_ops,
> +     .a              = NULL /* Set below. */
> +};
> +
> +
>  static int p9front_drv_init(struct uk_alloc *drv_allocator)
>  {
>       if (!drv_allocator)
>               return -EINVAL;
>  
>       a = drv_allocator;
> +     p9front_trans.a = a;
>  
> -     return 0;
> +     return uk_9pdev_trans_register(&p9front_trans);
>  }
>  
>  static int p9front_add_dev(struct xenbus_device *xendev)
> 

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