A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-29 03:01:39 -04:00
Code Issues Projects Releases Packages Wiki Activity

virtio: make add_buf return capacity remaining

Browse source 
This API change means that virtio_net can tell how much capacity
remains for buffers.  It's necessarily fuzzy, since
VIRTIO_RING_F_INDIRECT_DESC means we can fit any number of descriptors
in one, *if* we can kmalloc.

Signed-off-by: Rusty Russell <[email protected]>
Cc: Dinesh Subhraveti <[email protected]>
This commit is contained in:
Rusty Russell 2009-09-23 22:26:31 -06:00
commit 3c1b27d504
8 changed files with 19 additions and 15 deletions
Download patch file Download diff file Expand all files Collapse all files

2
drivers/virtio/virtio_balloon.c
View file

@ -84,7 +84,7 @@ static void tell_host(struct virtio_balloon *vb, struct virtqueue *vq)
init_completion(&vb->acked);
/* We should always be able to add one buffer to an empty queue. */
if (vq->vq_ops->add_buf(vq, &sg, 1, 0, vb) != 0)
if (vq->vq_ops->add_buf(vq, &sg, 1, 0, vb) < 0)
BUG();
vq->vq_ops->kick(vq);

6
drivers/virtio/virtio_ring.c
View file

@ -208,7 +208,11 @@ add_head:
pr_debug("Added buffer head %i to %p\n", head, vq);
END_USE(vq);
return 0;
/* If we're indirect, we can fit many (assuming not OOM). */
if (vq->indirect)
return vq->num_free ? vq->vring.num : 0;
return vq->num_free;
}
static void vring_kick(struct virtqueue *_vq)