diff mbox series

[v6,02/15] vhost: add helpers for packed virtqueues

Message ID 20180702081629.29258-3-maxime.coquelin@redhat.com (mailing list archive)
State Superseded, archived
Delegated to: Maxime Coquelin
Headers show
Series Vhost: add support to packed ring layout | expand

Checks

Context Check Description
ci/Intel-compilation fail Compilation issues

Commit Message

Maxime Coquelin July 2, 2018, 8:16 a.m. UTC
From: Jens Freimann <jfreimann@redhat.com>

Add some helper functions to check descriptor flags
and check if a vring is of type packed.

Signed-off-by: Jens Freimann <jfreimann@redhat.com>
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---
 lib/librte_vhost/vhost.h         | 6 ++++++
 lib/librte_vhost/virtio-packed.h | 8 ++++++++
 2 files changed, 14 insertions(+)

Comments

Tiwei Bie July 4, 2018, 5:39 a.m. UTC | #1
On Mon, Jul 02, 2018 at 10:16:16AM +0200, Maxime Coquelin wrote:
> From: Jens Freimann <jfreimann@redhat.com>
> 
> Add some helper functions to check descriptor flags
> and check if a vring is of type packed.
> 
> Signed-off-by: Jens Freimann <jfreimann@redhat.com>
> Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
> ---
>  lib/librte_vhost/vhost.h         | 6 ++++++
>  lib/librte_vhost/virtio-packed.h | 8 ++++++++
>  2 files changed, 14 insertions(+)
> 
> diff --git a/lib/librte_vhost/vhost.h b/lib/librte_vhost/vhost.h
> index cecd5c1ee..cabbc3ab7 100644
> --- a/lib/librte_vhost/vhost.h
> +++ b/lib/librte_vhost/vhost.h
> @@ -318,6 +318,12 @@ struct virtio_net {
>  	struct vhost_user_extern_ops extern_ops;
>  } __rte_cache_aligned;
>  
> +static __rte_always_inline bool
> +vq_is_packed(struct virtio_net *dev)
> +{
> +	return dev->features & (1ull << VIRTIO_F_RING_PACKED);
> +}
> +
>  #define VHOST_LOG_PAGE	4096
>  
>  /*
> diff --git a/lib/librte_vhost/virtio-packed.h b/lib/librte_vhost/virtio-packed.h
> index 744b3991b..d386cb6df 100644
> --- a/lib/librte_vhost/virtio-packed.h
> +++ b/lib/librte_vhost/virtio-packed.h
> @@ -19,4 +19,12 @@ struct vring_desc_packed {
>  	uint16_t flags;
>  };
>  
> +

There is no need to add above blank line.

> +static inline bool
> +desc_is_avail(struct vring_desc_packed *desc, bool wrap_counter)
> +{
> +	return wrap_counter == !!(desc->flags & VRING_DESC_F_AVAIL) &&
> +		wrap_counter != !!(desc->flags & VRING_DESC_F_USED);
> +}
> +
>  #endif /* __VIRTIO_PACKED_H */
> -- 
> 2.14.4
>
Maxime Coquelin July 4, 2018, 4:03 p.m. UTC | #2
On 07/04/2018 07:39 AM, Tiwei Bie wrote:
> On Mon, Jul 02, 2018 at 10:16:16AM +0200, Maxime Coquelin wrote:
>> From: Jens Freimann <jfreimann@redhat.com>
>>
>> Add some helper functions to check descriptor flags
>> and check if a vring is of type packed.
>>
>> Signed-off-by: Jens Freimann <jfreimann@redhat.com>
>> Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
>> ---
>>   lib/librte_vhost/vhost.h         | 6 ++++++
>>   lib/librte_vhost/virtio-packed.h | 8 ++++++++
>>   2 files changed, 14 insertions(+)
>>
>> diff --git a/lib/librte_vhost/vhost.h b/lib/librte_vhost/vhost.h
>> index cecd5c1ee..cabbc3ab7 100644
>> --- a/lib/librte_vhost/vhost.h
>> +++ b/lib/librte_vhost/vhost.h
>> @@ -318,6 +318,12 @@ struct virtio_net {
>>   	struct vhost_user_extern_ops extern_ops;
>>   } __rte_cache_aligned;
>>   
>> +static __rte_always_inline bool
>> +vq_is_packed(struct virtio_net *dev)
>> +{
>> +	return dev->features & (1ull << VIRTIO_F_RING_PACKED);
>> +}
>> +
>>   #define VHOST_LOG_PAGE	4096
>>   
>>   /*
>> diff --git a/lib/librte_vhost/virtio-packed.h b/lib/librte_vhost/virtio-packed.h
>> index 744b3991b..d386cb6df 100644
>> --- a/lib/librte_vhost/virtio-packed.h
>> +++ b/lib/librte_vhost/virtio-packed.h
>> @@ -19,4 +19,12 @@ struct vring_desc_packed {
>>   	uint16_t flags;
>>   };
>>   
>> +
> 
> There is no need to add above blank line.

Removed.

>> +static inline bool
>> +desc_is_avail(struct vring_desc_packed *desc, bool wrap_counter)
>> +{
>> +	return wrap_counter == !!(desc->flags & VRING_DESC_F_AVAIL) &&
>> +		wrap_counter != !!(desc->flags & VRING_DESC_F_USED);
>> +}
>> +
>>   #endif /* __VIRTIO_PACKED_H */
>> -- 
>> 2.14.4
>>
diff mbox series

Patch

diff --git a/lib/librte_vhost/vhost.h b/lib/librte_vhost/vhost.h
index cecd5c1ee..cabbc3ab7 100644
--- a/lib/librte_vhost/vhost.h
+++ b/lib/librte_vhost/vhost.h
@@ -318,6 +318,12 @@  struct virtio_net {
 	struct vhost_user_extern_ops extern_ops;
 } __rte_cache_aligned;
 
+static __rte_always_inline bool
+vq_is_packed(struct virtio_net *dev)
+{
+	return dev->features & (1ull << VIRTIO_F_RING_PACKED);
+}
+
 #define VHOST_LOG_PAGE	4096
 
 /*
diff --git a/lib/librte_vhost/virtio-packed.h b/lib/librte_vhost/virtio-packed.h
index 744b3991b..d386cb6df 100644
--- a/lib/librte_vhost/virtio-packed.h
+++ b/lib/librte_vhost/virtio-packed.h
@@ -19,4 +19,12 @@  struct vring_desc_packed {
 	uint16_t flags;
 };
 
+
+static inline bool
+desc_is_avail(struct vring_desc_packed *desc, bool wrap_counter)
+{
+	return wrap_counter == !!(desc->flags & VRING_DESC_F_AVAIL) &&
+		wrap_counter != !!(desc->flags & VRING_DESC_F_USED);
+}
+
 #endif /* __VIRTIO_PACKED_H */