Signed-off-by: <[email protected]> ------------- diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index c708ecc..bb5eb7b 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -107,6 +107,16 @@ static struct page *get_a_page(struct virtnet_info *vi, gfp_t gfp_mask) return p; } +static void virtio_net_free_pages(void *buf) +{ + struct page *page, *next; + + for (page = buf; page; page = next) { + next = (struct page *)page->private; + __free_pages(page, 0); + } +} + static void skb_xmit_done(struct virtqueue *svq) { struct virtnet_info *vi = svq->vdev->priv; diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index fbd2ecd..db83465 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -334,6 +334,29 @@ static bool vring_enable_cb(struct virtqueue *_vq) return true; } +static int vring_destroy_bufs(struct virtqueue *_vq, void (*destroy)(void *)) +{ + struct vring_virtqueue *vq = to_vvq(_vq); + void *buf; + unsigned int i; + int freed = 0; + + START_USE(vq); + + for (i = 0; i < vq->vring.num; i++) { + if (vq->data[i]) { + /* detach_buf clears data, so grab it now. */ + buf = vq->data[i]; + detach_buf(vq, i); + destroy(buf); + freed++; + } + } + + END_USE(vq); + return freed; +} + irqreturn_t vring_interrupt(int irq, void *_vq) { struct vring_virtqueue *vq = to_vvq(_vq); @@ -360,6 +383,7 @@ static struct virtqueue_ops vring_vq_ops = { .kick = vring_kick, .disable_cb = vring_disable_cb, .enable_cb = vring_enable_cb, + .destroy_bufs = vring_destroy_bufs, }; struct virtqueue *vring_new_virtqueue(unsigned int num, diff --git a/include/linux/virtio.h b/include/linux/virtio.h index 057a2e0..e6d7d77 100644 --- a/include/linux/virtio.h +++ b/include/linux/virtio.h @@ -71,6 +71,7 @@ struct virtqueue_ops { void (*disable_cb)(struct virtqueue *vq); bool (*enable_cb)(struct virtqueue *vq); + int (*destroy_bufs)(struct virtqueue *vq, void (*destory)(void *)); }; /**
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