Displaying 20 results from an estimated 34 matches for "register_buff".
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register_buffer
2014 Apr 25
1
[PATCH] virtio-rng: support multiple virtio-rng devices
...Qs + virtio_pci. */
- if (!virtqueue_get_buf(vq, &data_avail))
+ if (!virtqueue_get_buf(vi->vq, &vi->data_avail))
return;
- complete(&have_data);
+ complete(&vi->have_data);
}
/* The host will fill any buffer we give it with sweet, sweet randomness. */
-static void register_buffer(u8 *buf, size_t size)
+static void register_buffer(struct virtrng_info *vi, u8 *buf, size_t size)
{
struct scatterlist sg;
sg_init_one(&sg, buf, size);
/* There should always be room for one buffer. */
- virtqueue_add_inbuf(vq, &sg, 1, buf, GFP_KERNEL);
+ virtqueue_add_inbuf(vi...
2014 Apr 25
1
[PATCH] virtio-rng: support multiple virtio-rng devices
...Qs + virtio_pci. */
- if (!virtqueue_get_buf(vq, &data_avail))
+ if (!virtqueue_get_buf(vi->vq, &vi->data_avail))
return;
- complete(&have_data);
+ complete(&vi->have_data);
}
/* The host will fill any buffer we give it with sweet, sweet randomness. */
-static void register_buffer(u8 *buf, size_t size)
+static void register_buffer(struct virtrng_info *vi, u8 *buf, size_t size)
{
struct scatterlist sg;
sg_init_one(&sg, buf, size);
/* There should always be room for one buffer. */
- virtqueue_add_inbuf(vq, &sg, 1, buf, GFP_KERNEL);
+ virtqueue_add_inbuf(vi...
2007 Dec 21
0
[kvm-devel] [Virtio-for-kvm] [PATCH 2/13] [Mostly resend] virtio additions
...t virtqueue *vq;
+static u32 random_data;
+static bool have_data;
+
+static bool random_recv_done(struct virtqueue *vq)
+{
+ have_data = true;
+
+ /* Don't suppress callbacks: there can't be any more since we
+ * have used up the only buffer. */
+ return true;
+}
+
+static void register_buffer(void)
+{
+ struct scatterlist sg;
+
+ sg_init_one(&sg, &random_data, sizeof(random_data));
+ /* There should always be room for one buffer. */
+ if (vq->vq_ops->add_buf(vq, &sg, 0, 1, &random_data) != 0)
+ BUG();
+ vq->vq_ops->kick(vq);
+}
+
+stat...
2007 Dec 21
0
[kvm-devel] [Virtio-for-kvm] [PATCH 2/13] [Mostly resend] virtio additions
...t virtqueue *vq;
+static u32 random_data;
+static bool have_data;
+
+static bool random_recv_done(struct virtqueue *vq)
+{
+ have_data = true;
+
+ /* Don't suppress callbacks: there can't be any more since we
+ * have used up the only buffer. */
+ return true;
+}
+
+static void register_buffer(void)
+{
+ struct scatterlist sg;
+
+ sg_init_one(&sg, &random_data, sizeof(random_data));
+ /* There should always be room for one buffer. */
+ if (vq->vq_ops->add_buf(vq, &sg, 0, 1, &random_data) != 0)
+ BUG();
+ vq->vq_ops->kick(vq);
+}
+
+stat...
2008 May 26
1
[PATCH] virtio_rng: dont use vmalloced addresses for virtio
....c
@@ -27,7 +27,7 @@
* give it 64 bytes at a time, and the hwrng framework takes it 4 bytes at a
* time. */
static struct virtqueue *vq;
-static u32 random_data[16];
+static u32 *random_data;
static unsigned int data_left;
static DECLARE_COMPLETION(have_data);
@@ -47,9 +47,9 @@ static void register_buffer(void)
{
struct scatterlist sg;
- sg_init_one(&sg, &random_data, sizeof(random_data));
+ sg_init_one(&sg, random_data, 64);
/* There should always be room for one buffer. */
- if (vq->vq_ops->add_buf(vq, &sg, 0, 1, &random_data) != 0)
+ if (vq->vq_ops->add_bu...
2008 May 26
1
[PATCH] virtio_rng: dont use vmalloced addresses for virtio
....c
@@ -27,7 +27,7 @@
* give it 64 bytes at a time, and the hwrng framework takes it 4 bytes at a
* time. */
static struct virtqueue *vq;
-static u32 random_data[16];
+static u32 *random_data;
static unsigned int data_left;
static DECLARE_COMPLETION(have_data);
@@ -47,9 +47,9 @@ static void register_buffer(void)
{
struct scatterlist sg;
- sg_init_one(&sg, &random_data, sizeof(random_data));
+ sg_init_one(&sg, random_data, 64);
/* There should always be room for one buffer. */
- if (vq->vq_ops->add_buf(vq, &sg, 0, 1, &random_data) != 0)
+ if (vq->vq_ops->add_bu...
2020 Aug 11
3
[PATCH v3] virtio-rng: return available data with O_NONBLOCK
...m/virtio-rng.c b/drivers/char/hw_random/virtio-rng.c
> index a90001e02bf7..8eaeceecb41e 100644
> --- a/drivers/char/hw_random/virtio-rng.c
> +++ b/drivers/char/hw_random/virtio-rng.c
> @@ -65,7 +65,7 @@ static int virtio_read(struct hwrng *rng, void *buf, size_t size, bool wait)
> register_buffer(vi, buf, size);
> }
>
> - if (!wait)
> + if (!wait && !completion_done(&vi->have_data))
> return 0;
>
> ret = wait_for_completion_killable(&vi->have_data);
> @@ -74,7 +74,7 @@ static int virtio_read(struct hwrng *rng, void *buf, size_t size...
2020 Aug 11
3
[PATCH v3] virtio-rng: return available data with O_NONBLOCK
...m/virtio-rng.c b/drivers/char/hw_random/virtio-rng.c
> index a90001e02bf7..8eaeceecb41e 100644
> --- a/drivers/char/hw_random/virtio-rng.c
> +++ b/drivers/char/hw_random/virtio-rng.c
> @@ -65,7 +65,7 @@ static int virtio_read(struct hwrng *rng, void *buf, size_t size, bool wait)
> register_buffer(vi, buf, size);
> }
>
> - if (!wait)
> + if (!wait && !completion_done(&vi->have_data))
> return 0;
>
> ret = wait_for_completion_killable(&vi->have_data);
> @@ -74,7 +74,7 @@ static int virtio_read(struct hwrng *rng, void *buf, size_t size...
2017 Sep 26
0
[PATCH v5 REPOST 1/6] hw_random: place mutex around read functions and buffers.
...wait)
{
int ret;
struct virtrng_info *vi = (struct virtrng_info *)rng->priv;
if (vi->hwrng_removed)
return -ENODEV;
if (!vi->busy) {
vi->busy = true;
init_completion(&vi->have_data);
register_buffer(vi, buf, size);
}
if (!wait)
return 0;
ret = wait_for_completion_killable(&vi->have_data);
if (ret < 0)
return ret;
vi->busy = false;
return vi->data_avail;
}
>
> > if (!...
2008 Jan 14
1
[PATCH] virtio_rng: adopt driver to newest virtio code
...ueue *vq)
+static void random_recv_done(struct virtqueue *vq)
{
have_data = true;
- /* Don't suppress callbacks: there can't be any more since we
+ /* No need to call disable_cb: there can't be any more since we
* have used up the only buffer. */
- return true;
}
static void register_buffer(void)
2008 Jan 14
1
[PATCH] virtio_rng: adopt driver to newest virtio code
...ueue *vq)
+static void random_recv_done(struct virtqueue *vq)
{
have_data = true;
- /* Don't suppress callbacks: there can't be any more since we
+ /* No need to call disable_cb: there can't be any more since we
* have used up the only buffer. */
- return true;
}
static void register_buffer(void)
2017 Sep 25
2
[PATCH v5 REPOST 1/6] hw_random: place mutex around read functions and buffers.
A bit late to a party, but:
On Mon, Dec 8, 2014 at 12:50 AM, Amos Kong <akong at redhat.com> wrote:
> From: Rusty Russell <rusty at rustcorp.com.au>
>
> There's currently a big lock around everything, and it means that we
> can't query sysfs (eg /sys/devices/virtual/misc/hw_random/rng_current)
> while the rng is reading. This is a real problem when the rng is
2017 Sep 25
2
[PATCH v5 REPOST 1/6] hw_random: place mutex around read functions and buffers.
A bit late to a party, but:
On Mon, Dec 8, 2014 at 12:50 AM, Amos Kong <akong at redhat.com> wrote:
> From: Rusty Russell <rusty at rustcorp.com.au>
>
> There's currently a big lock around everything, and it means that we
> can't query sysfs (eg /sys/devices/virtual/misc/hw_random/rng_current)
> while the rng is reading. This is a real problem when the rng is
2020 Aug 31
0
[PATCH v3] virtio-rng: return available data with O_NONBLOCK
...90001e02bf7..8eaeceecb41e 100644
>>>> --- a/drivers/char/hw_random/virtio-rng.c
>>>> +++ b/drivers/char/hw_random/virtio-rng.c
>>>> @@ -65,7 +65,7 @@ static int virtio_read(struct hwrng *rng, void
>>>> *buf, size_t size, bool wait)
>>>> register_buffer(vi, buf, size);
>>>> }
>>>>
>>>> - if (!wait)
>>>> + if (!wait && !completion_done(&vi->have_data))
>>>> return 0;
>>>>
>>>> ret = wait_for_completion_killable(&vi->have_data);
>...
2012 May 28
6
[PATCH 0/5] virtio: rng: fixes
Hi Rusty,
These are a few fixes for the virtio-rng driver. These were tested
using the not-yet-upstream virtio-rng device patch to qemu:
http://thread.gmane.org/gmane.comp.emulators.qemu/152668
Please apply.
Amit Shah (5):
virtio ids: fix comment for virtio-rng
virtio: rng: allow tasks to be killed that are waiting for rng input
virtio: rng: don't wait on host when module is going
2012 May 28
6
[PATCH 0/5] virtio: rng: fixes
Hi Rusty,
These are a few fixes for the virtio-rng driver. These were tested
using the not-yet-upstream virtio-rng device patch to qemu:
http://thread.gmane.org/gmane.comp.emulators.qemu/152668
Please apply.
Amit Shah (5):
virtio ids: fix comment for virtio-rng
virtio: rng: allow tasks to be killed that are waiting for rng input
virtio: rng: don't wait on host when module is going
2009 Sep 21
0
[PATCH 2/6] virtio: make add_buf return capacity remaining
...vq, vblk->sg, out, in, vbr) < 0) {
mempool_free(vbr, vblk->pool);
return false;
}
diff --git a/drivers/char/hw_random/virtio-rng.c b/drivers/char/hw_random/virtio-rng.c
--- a/drivers/char/hw_random/virtio-rng.c
+++ b/drivers/char/hw_random/virtio-rng.c
@@ -51,7 +51,7 @@ static void register_buffer(void)
sg_init_one(&sg, random_data+data_left, RANDOM_DATA_SIZE-data_left);
/* There should always be room for one buffer. */
- if (vq->vq_ops->add_buf(vq, &sg, 0, 1, random_data) != 0)
+ if (vq->vq_ops->add_buf(vq, &sg, 0, 1, random_data) < 0)
BUG();
vq->v...
2009 Sep 21
0
[PATCH 2/6] virtio: make add_buf return capacity remaining
...vq, vblk->sg, out, in, vbr) < 0) {
mempool_free(vbr, vblk->pool);
return false;
}
diff --git a/drivers/char/hw_random/virtio-rng.c b/drivers/char/hw_random/virtio-rng.c
--- a/drivers/char/hw_random/virtio-rng.c
+++ b/drivers/char/hw_random/virtio-rng.c
@@ -51,7 +51,7 @@ static void register_buffer(void)
sg_init_one(&sg, random_data+data_left, RANDOM_DATA_SIZE-data_left);
/* There should always be room for one buffer. */
- if (vq->vq_ops->add_buf(vq, &sg, 0, 1, random_data) != 0)
+ if (vq->vq_ops->add_buf(vq, &sg, 0, 1, random_data) < 0)
BUG();
vq->v...
2010 Jun 23
4
[RFC] virtio: Support releasing lock during kick
...virtblk_prepare_flush(struct request_queue *q, struct request *req)
diff --git a/drivers/char/hw_random/virtio-rng.c b/drivers/char/hw_random/virtio-rng.c
index 75f1cbd..852d563 100644
--- a/drivers/char/hw_random/virtio-rng.c
+++ b/drivers/char/hw_random/virtio-rng.c
@@ -49,7 +49,7 @@ static void register_buffer(u8 *buf, size_t size)
if (virtqueue_add_buf(vq, &sg, 0, 1, buf) < 0)
BUG();
- virtqueue_kick(vq);
+ virtqueue_kick(vq, NULL);
}
static int virtio_read(struct hwrng *rng, void *buf, size_t size, bool wait)
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c...
2010 Jun 23
4
[RFC] virtio: Support releasing lock during kick
...virtblk_prepare_flush(struct request_queue *q, struct request *req)
diff --git a/drivers/char/hw_random/virtio-rng.c b/drivers/char/hw_random/virtio-rng.c
index 75f1cbd..852d563 100644
--- a/drivers/char/hw_random/virtio-rng.c
+++ b/drivers/char/hw_random/virtio-rng.c
@@ -49,7 +49,7 @@ static void register_buffer(u8 *buf, size_t size)
if (virtqueue_add_buf(vq, &sg, 0, 1, buf) < 0)
BUG();
- virtqueue_kick(vq);
+ virtqueue_kick(vq, NULL);
}
static int virtio_read(struct hwrng *rng, void *buf, size_t size, bool wait)
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c...