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| author | David S. Miller <davem@davemloft.net> | 2015-01-06 22:29:20 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-01-06 22:29:20 -0500 |
| commit | 44d84d7272e5848878a96029b8a8b6e86854f146 (patch) | |
| tree | 91b188c0ae21255510ace7507d42cdf0e8f6f5ae /include/uapi/linux | |
| parent | de7b5b3d790a2524c3f992d357983600635c441b (diff) | |
| parent | bdec41963890f8ed9ad89f8b418959ab3cdc2aa3 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Diffstat (limited to 'include/uapi/linux')
| -rw-r--r-- | include/uapi/linux/virtio_ring.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/uapi/linux/virtio_ring.h b/include/uapi/linux/virtio_ring.h index 61c818a7fe70..a3318f31e8e7 100644 --- a/include/uapi/linux/virtio_ring.h +++ b/include/uapi/linux/virtio_ring.h | |||
| @@ -101,6 +101,13 @@ struct vring { | |||
| 101 | struct vring_used *used; | 101 | struct vring_used *used; |
| 102 | }; | 102 | }; |
| 103 | 103 | ||
| 104 | /* Alignment requirements for vring elements. | ||
| 105 | * When using pre-virtio 1.0 layout, these fall out naturally. | ||
| 106 | */ | ||
| 107 | #define VRING_AVAIL_ALIGN_SIZE 2 | ||
| 108 | #define VRING_USED_ALIGN_SIZE 4 | ||
| 109 | #define VRING_DESC_ALIGN_SIZE 16 | ||
| 110 | |||
| 104 | /* The standard layout for the ring is a continuous chunk of memory which looks | 111 | /* The standard layout for the ring is a continuous chunk of memory which looks |
| 105 | * like this. We assume num is a power of 2. | 112 | * like this. We assume num is a power of 2. |
| 106 | * | 113 | * |