Displaying 20 results from an estimated 930 matches for "sg_init_one".
2018 Apr 19
1
[PATCH v2 net 1/3] virtio_net: split out ctrl buffer
...hould know better */
BUG_ON(!virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ));
- vi->ctrl_status = ~0;
- vi->ctrl_hdr.class = class;
- vi->ctrl_hdr.cmd = cmd;
+ vi->ctrl->status = ~0;
+ vi->ctrl->hdr.class = class;
+ vi->ctrl->hdr.cmd = cmd;
/* Add header */
- sg_init_one(&hdr, &vi->ctrl_hdr, sizeof(vi->ctrl_hdr));
+ sg_init_one(&hdr, &vi->ctrl->hdr, sizeof(vi->ctrl->hdr));
sgs[out_num++] = &hdr;
if (out)
sgs[out_num++] = out;
/* Add return status. */
- sg_init_one(&stat, &vi->ctrl_status, sizeof(vi->c...
2018 Apr 19
3
[PATCH net] virtio_net: split out ctrl buffer
...hould know better */
BUG_ON(!virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ));
- vi->ctrl_status = ~0;
- vi->ctrl_hdr.class = class;
- vi->ctrl_hdr.cmd = cmd;
+ vi->ctrl->status = ~0;
+ vi->ctrl->hdr.class = class;
+ vi->ctrl->hdr.cmd = cmd;
/* Add header */
- sg_init_one(&hdr, &vi->ctrl_hdr, sizeof(vi->ctrl_hdr));
+ sg_init_one(&hdr, &vi->ctrl->hdr, sizeof(vi->ctrl->hdr));
sgs[out_num++] = &hdr;
if (out)
sgs[out_num++] = out;
/* Add return status. */
- sg_init_one(&stat, &vi->ctrl_status, sizeof(vi->c...
2015 Oct 28
2
[PATCH v2 1/3] virtio_net: Stop doing DMA from the stack
...ld know better */
BUG_ON(!virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ));
- ctrl.class = class;
- ctrl.cmd = cmd;
+ buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
+ if (!buf)
+ return false;
+ buf->status = ~0;
+
+ buf->ctrl.class = class;
+ buf->ctrl.cmd = cmd;
/* Add header */
- sg_init_one(&hdr, &ctrl, sizeof(ctrl));
+ sg_init_one(&hdr, &buf->ctrl, sizeof(buf->ctrl));
sgs[out_num++] = &hdr;
if (out)
sgs[out_num++] = out;
/* Add return status. */
- sg_init_one(&stat, &status, sizeof(status));
+ sg_init_one(&stat, &buf->status,...
2015 Oct 28
2
[PATCH v2 1/3] virtio_net: Stop doing DMA from the stack
...ld know better */
BUG_ON(!virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ));
- ctrl.class = class;
- ctrl.cmd = cmd;
+ buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
+ if (!buf)
+ return false;
+ buf->status = ~0;
+
+ buf->ctrl.class = class;
+ buf->ctrl.cmd = cmd;
/* Add header */
- sg_init_one(&hdr, &ctrl, sizeof(ctrl));
+ sg_init_one(&hdr, &buf->ctrl, sizeof(buf->ctrl));
sgs[out_num++] = &hdr;
if (out)
sgs[out_num++] = out;
/* Add return status. */
- sg_init_one(&stat, &status, sizeof(status));
+ sg_init_one(&stat, &buf->status,...
2015 Oct 28
0
[PATCH v2 1/3] virtio_net: Stop doing DMA from the stack
...= kmalloc(sizeof(*buf), GFP_ATOMIC);
> + if (!buf)
> + return false;
This is problematic. The command is never retried, the error
is propagated to userspace.
> + buf->status = ~0;
> +
> + buf->ctrl.class = class;
> + buf->ctrl.cmd = cmd;
> /* Add header */
> - sg_init_one(&hdr, &ctrl, sizeof(ctrl));
> + sg_init_one(&hdr, &buf->ctrl, sizeof(buf->ctrl));
> sgs[out_num++] = &hdr;
>
> if (out)
> sgs[out_num++] = out;
>
> /* Add return status. */
> - sg_init_one(&stat, &status, sizeof(status));
> +...
2017 Jan 04
4
4.10 and -stable fix for virtio_blk and virtually mapped stacks
Without this fix attempts to do scsi passthrough on virtio_blk will crash
the system on virtually mapped stacks, which is something happening during
boot with many distros.
2017 Jan 04
4
4.10 and -stable fix for virtio_blk and virtually mapped stacks
Without this fix attempts to do scsi passthrough on virtio_blk will crash
the system on virtually mapped stacks, which is something happening during
boot with many distros.
2013 Dec 10
11
[PATCH net-next 1/3] virtio_net: set multicast filter list to host
...io_net: Add a MAC filter table
Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
--- a/drivers/net/virtio_net.c 2013-12-09 16:12:03.897891975 -0800
+++ b/drivers/net/virtio_net.c 2013-12-09 16:12:36.353164803 -0800
@@ -893,7 +893,7 @@ static bool virtnet_send_command(struct
sg_init_one(&hdr, &ctrl, sizeof(ctrl));
sgs[out_num++] = &hdr;
- if (out)
+ for (; out; out = sg_next(out))
sgs[out_num++] = out;
if (in)
sgs[out_num + in_num++] = in;
2013 Dec 10
11
[PATCH net-next 1/3] virtio_net: set multicast filter list to host
...io_net: Add a MAC filter table
Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
--- a/drivers/net/virtio_net.c 2013-12-09 16:12:03.897891975 -0800
+++ b/drivers/net/virtio_net.c 2013-12-09 16:12:36.353164803 -0800
@@ -893,7 +893,7 @@ static bool virtnet_send_command(struct
sg_init_one(&hdr, &ctrl, sizeof(ctrl));
sgs[out_num++] = &hdr;
- if (out)
+ for (; out; out = sg_next(out))
sgs[out_num++] = out;
if (in)
sgs[out_num + in_num++] = in;
2018 Nov 05
2
[PATCH 1/5] VSOCK: support fill mergeable rx buffer in guest
...57,25 @@ static int virtio_transport_send_pkt_loopback(struct virtio_vsock *vsock,
return 0;
}
+static int fill_mergeable_rx_buff(struct virtqueue *vq)
+{
+ void *page = NULL;
+ struct scatterlist sg;
+ int err;
+
+ page = (void *)get_zeroed_page(GFP_KERNEL);
+ if (!page)
+ return -ENOMEM;
+
+ sg_init_one(&sg, page, PAGE_SIZE);
+
+ err = virtqueue_add_inbuf(vq, &sg, 1, page, GFP_KERNEL);
+ if (err < 0)
+ free_page((unsigned long) page);
+
+ return err;
+}
+
static void virtio_vsock_rx_fill(struct virtio_vsock *vsock)
{
int buf_len = VIRTIO_VSOCK_DEFAULT_RX_BUF_SIZE;
@@ -267,27 +287,3...
2018 Nov 05
2
[PATCH 1/5] VSOCK: support fill mergeable rx buffer in guest
...57,25 @@ static int virtio_transport_send_pkt_loopback(struct virtio_vsock *vsock,
return 0;
}
+static int fill_mergeable_rx_buff(struct virtqueue *vq)
+{
+ void *page = NULL;
+ struct scatterlist sg;
+ int err;
+
+ page = (void *)get_zeroed_page(GFP_KERNEL);
+ if (!page)
+ return -ENOMEM;
+
+ sg_init_one(&sg, page, PAGE_SIZE);
+
+ err = virtqueue_add_inbuf(vq, &sg, 1, page, GFP_KERNEL);
+ if (err < 0)
+ free_page((unsigned long) page);
+
+ return err;
+}
+
static void virtio_vsock_rx_fill(struct virtio_vsock *vsock)
{
int buf_len = VIRTIO_VSOCK_DEFAULT_RX_BUF_SIZE;
@@ -267,27 +287,3...
2015 Oct 30
1
[PATCH v4 1/6] virtio-net: Stop doing DMA from the stack
...ack status = ~0;
unsigned out_num = 0, tmp;
/* Caller should know better */
BUG_ON(!virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ));
- ctrl.class = class;
- ctrl.cmd = cmd;
+ vi->ctrl_status = ~0;
+ vi->ctrl_hdr.class = class;
+ vi->ctrl_hdr.cmd = cmd;
/* Add header */
- sg_init_one(&hdr, &ctrl, sizeof(ctrl));
+ sg_init_one(&hdr, &vi->ctrl_hdr, sizeof(vi->ctrl_hdr));
sgs[out_num++] = &hdr;
if (out)
sgs[out_num++] = out;
/* Add return status. */
- sg_init_one(&stat, &status, sizeof(status));
+ sg_init_one(&stat, &vi->ctr...
2013 Dec 10
0
[PATCH net-next 2/3] virtio_net: remove unused parameter to send_command
.../* Caller should know better */
BUG_ON(!virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ));
@@ -895,16 +894,13 @@ static bool virtnet_send_command(struct
for (; out; out = sg_next(out))
sgs[out_num++] = out;
- if (in)
- sgs[out_num + in_num++] = in;
/* Add return status. */
sg_init_one(&stat, &status, sizeof(status));
- sgs[out_num + in_num++] = &stat;
+ sgs[out_num] = &stat;
- BUG_ON(out_num + in_num > ARRAY_SIZE(sgs));
- BUG_ON(virtqueue_add_sgs(vi->cvq, sgs, out_num, in_num, vi, GFP_ATOMIC)
- < 0);
+ BUG_ON(out_num + 1 > ARRAY_SIZE(sgs));
+...
2015 Oct 30
0
[PATCH v4 1/6] virtio-net: Stop doing DMA from the stack
...gt; /* Caller should know better */
> BUG_ON(!virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ));
>
> - ctrl.class = class;
> - ctrl.cmd = cmd;
> + vi->ctrl_status = ~0;
> + vi->ctrl_hdr.class = class;
> + vi->ctrl_hdr.cmd = cmd;
> /* Add header */
> - sg_init_one(&hdr, &ctrl, sizeof(ctrl));
> + sg_init_one(&hdr, &vi->ctrl_hdr, sizeof(vi->ctrl_hdr));
> sgs[out_num++] = &hdr;
>
> if (out)
> sgs[out_num++] = out;
>
> /* Add return status. */
> - sg_init_one(&stat, &status, sizeof(status));
&g...
2015 Oct 28
0
[PATCH v3 1/3] virtio_net: Stop doing DMA from the stack
...ld know better */
BUG_ON(!virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ));
- ctrl.class = class;
- ctrl.cmd = cmd;
+ buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
+ if (!buf)
+ return false;
+ buf->status = ~0;
+
+ buf->ctrl.class = class;
+ buf->ctrl.cmd = cmd;
/* Add header */
- sg_init_one(&hdr, &ctrl, sizeof(ctrl));
+ sg_init_one(&hdr, &buf->ctrl, sizeof(buf->ctrl));
sgs[out_num++] = &hdr;
if (out)
sgs[out_num++] = out;
/* Add return status. */
- sg_init_one(&stat, &status, sizeof(status));
+ sg_init_one(&stat, &buf->status,...
2015 Oct 28
0
[PATCH v3 1/3] virtio_net: Stop doing DMA from the stack
...VIRTIO_NET_F_CTRL_VQ));
>
> - ctrl.class = class;
> - ctrl.cmd = cmd;
> + buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
> + if (!buf)
> + return false;
> + buf->status = ~0;
> +
> + buf->ctrl.class = class;
> + buf->ctrl.cmd = cmd;
> /* Add header */
> - sg_init_one(&hdr, &ctrl, sizeof(ctrl));
> + sg_init_one(&hdr, &buf->ctrl, sizeof(buf->ctrl));
> sgs[out_num++] = &hdr;
>
> if (out)
> sgs[out_num++] = out;
>
> /* Add return status. */
> - sg_init_one(&stat, &status, sizeof(status));
> +...
2023 Mar 05
1
[PATCH net] virtio-net: unify notifications coalescing structs
...struct scatterlist sgs_tx, sgs_rx;
- struct virtio_net_ctrl_coal_tx coal_tx;
- struct virtio_net_ctrl_coal_rx coal_rx;
+ struct virtio_net_ctrl_coal coal_params;
- coal_tx.tx_usecs = cpu_to_le32(ec->tx_coalesce_usecs);
- coal_tx.tx_max_packets = cpu_to_le32(ec->tx_max_coalesced_frames);
- sg_init_one(&sgs_tx, &coal_tx, sizeof(coal_tx));
+ coal_params.max_usecs = cpu_to_le32(ec->tx_coalesce_usecs);
+ coal_params.max_packets = cpu_to_le32(ec->tx_max_coalesced_frames);
+ sg_init_one(&sgs_tx, &coal_params, sizeof(coal_params));
if (!virtnet_send_command(vi, VIRTIO_NET_CTRL...
2008 May 26
1
[PATCH] virtio_rng: dont use vmalloced addresses for virtio
...nd 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_buf(vq, &sg, 0, 1, random_data) != 0)
BUG();...
2008 May 26
1
[PATCH] virtio_rng: dont use vmalloced addresses for virtio
...nd 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_buf(vq, &sg, 0, 1, random_data) != 0)
BUG();...
2023 Feb 16
0
[RFC PATCH v1 05/12] vsock/virtio: non-linear skb support
...omment just to be clear ;-)
> int ret, in_sg = 0, out_sg = 0;
> struct sk_buff *skb;
> bool reply;
>@@ -111,12 +112,30 @@ virtio_transport_send_pkt_work(struct work_struct *work)
>
> virtio_transport_deliver_tap_pkt(skb);
> reply = virtio_vsock_skb_reply(skb);
>+ sg_init_one(&bufs[0], virtio_vsock_hdr(skb), sizeof(*virtio_vsock_hdr(skb)));
>+ sgs[out_sg++] = &bufs[0];
>+
>+ if (skb_is_nonlinear(skb)) {
>+ int i;
>+
>+ for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
>+ struct page *data_page = skb_shinfo(skb)->frags[i].bv...