Displaying 20 results from an estimated 70 matches for "skb_get_queue_mapping".
2018 Jan 23
2
[RFC PATCH net-next v2 2/2] virtio_net: Extend virtio to use VF datapath when available
On 2018?01?12? 13:58, Sridhar Samudrala wrote:
> static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
> {
> struct virtnet_info *vi = netdev_priv(dev);
> int qnum = skb_get_queue_mapping(skb);
> struct send_queue *sq = &vi->sq[qnum];
> + struct net_device *vf_netdev;
> int err;
> struct netdev_queue *txq = netdev_get_tx_queue(dev, qnum);
> bool kick = !skb->xmit_more;
> bool use_napi = sq->napi.weight;
>
> + /* If VF is present...
2018 Jan 23
2
[RFC PATCH net-next v2 2/2] virtio_net: Extend virtio to use VF datapath when available
On 2018?01?12? 13:58, Sridhar Samudrala wrote:
> static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
> {
> struct virtnet_info *vi = netdev_priv(dev);
> int qnum = skb_get_queue_mapping(skb);
> struct send_queue *sq = &vi->sq[qnum];
> + struct net_device *vf_netdev;
> int err;
> struct netdev_queue *txq = netdev_get_tx_queue(dev, qnum);
> bool kick = !skb->xmit_more;
> bool use_napi = sq->napi.weight;
>
> + /* If VF is present...
2014 Oct 15
6
[PATCH] virtio_net: fix use after free
...d, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 3d0ce44..13d0a8b 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -920,6 +920,8 @@ static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
int qnum = skb_get_queue_mapping(skb);
struct send_queue *sq = &vi->sq[qnum];
int err;
+ struct netdev_queue *txq = netdev_get_tx_queue(dev, qnum);
+ bool kick = !skb->xmit_more;
/* Free up any pending old buffers before queueing new ones. */
free_old_xmit_skbs(sq);
@@ -956,7 +958,7 @@ static netdev_tx_t start_...
2014 Oct 15
6
[PATCH] virtio_net: fix use after free
...d, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 3d0ce44..13d0a8b 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -920,6 +920,8 @@ static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
int qnum = skb_get_queue_mapping(skb);
struct send_queue *sq = &vi->sq[qnum];
int err;
+ struct netdev_queue *txq = netdev_get_tx_queue(dev, qnum);
+ bool kick = !skb->xmit_more;
/* Free up any pending old buffers before queueing new ones. */
free_old_xmit_skbs(sq);
@@ -956,7 +958,7 @@ static netdev_tx_t start_...
2018 Jan 23
0
[RFC PATCH net-next v2 2/2] virtio_net: Extend virtio to use VF datapath when available
On 1/23/2018 2:33 AM, Jason Wang wrote:
>
>
> On 2018?01?12? 13:58, Sridhar Samudrala wrote:
>> ? static netdev_tx_t start_xmit(struct sk_buff *skb, struct
>> net_device *dev)
>> ? {
>> ????? struct virtnet_info *vi = netdev_priv(dev);
>> ????? int qnum = skb_get_queue_mapping(skb);
>> ????? struct send_queue *sq = &vi->sq[qnum];
>> +??? struct net_device *vf_netdev;
>> ????? int err;
>> ????? struct netdev_queue *txq = netdev_get_tx_queue(dev, qnum);
>> ????? bool kick = !skb->xmit_more;
>> ????? bool use_napi = sq->napi....
2014 Oct 15
0
[PATCH] virtio_net: fix use after free
...gt;
> diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
> index 3d0ce44..13d0a8b 100644
> --- a/drivers/net/virtio_net.c
> +++ b/drivers/net/virtio_net.c
> @@ -920,6 +920,8 @@ static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
> int qnum = skb_get_queue_mapping(skb);
> struct send_queue *sq = &vi->sq[qnum];
> int err;
> + struct netdev_queue *txq = netdev_get_tx_queue(dev, qnum);
Do you need to cache 'txq' on stack for the entire call?
Looks like it is only needed when 'kick' is true.
I've not looked to see if save...
2014 Oct 31
0
[PATCH] virtio_net: fix use after free
...gt;
> diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
> index 3d0ce44..13d0a8b 100644
> --- a/drivers/net/virtio_net.c
> +++ b/drivers/net/virtio_net.c
> @@ -920,6 +920,8 @@ static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
> int qnum = skb_get_queue_mapping(skb);
> struct send_queue *sq = &vi->sq[qnum];
> int err;
> + struct netdev_queue *txq = netdev_get_tx_queue(dev, qnum);
> + bool kick = !skb->xmit_more;
>
> /* Free up any pending old buffers before queueing new ones. */
> free_old_xmit_skbs(sq);
> @@ -9...
2014 Oct 31
1
[PATCH] virtio_net: fix use after free
...a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
>> index 3d0ce44..13d0a8b 100644
>> --- a/drivers/net/virtio_net.c
>> +++ b/drivers/net/virtio_net.c
>> @@ -920,6 +920,8 @@ static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
>> int qnum = skb_get_queue_mapping(skb);
>> struct send_queue *sq = &vi->sq[qnum];
>> int err;
>> + struct netdev_queue *txq = netdev_get_tx_queue(dev, qnum);
>> + bool kick = !skb->xmit_more;
>>
>> /* Free up any pending old buffers before queueing new ones. */
>> free_o...
2014 Oct 31
1
[PATCH] virtio_net: fix use after free
...a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
>> index 3d0ce44..13d0a8b 100644
>> --- a/drivers/net/virtio_net.c
>> +++ b/drivers/net/virtio_net.c
>> @@ -920,6 +920,8 @@ static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
>> int qnum = skb_get_queue_mapping(skb);
>> struct send_queue *sq = &vi->sq[qnum];
>> int err;
>> + struct netdev_queue *txq = netdev_get_tx_queue(dev, qnum);
>> + bool kick = !skb->xmit_more;
>>
>> /* Free up any pending old buffers before queueing new ones. */
>> free_o...
2014 Oct 14
4
[PATCH RFC] virtio_net: enable tx interrupt
...outbuf(sq->vq, sq->sg, num_sg, skb,
+ GFP_ATOMIC);
}
static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
@@ -910,10 +950,9 @@ static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
struct virtnet_info *vi = netdev_priv(dev);
int qnum = skb_get_queue_mapping(skb);
struct send_queue *sq = &vi->sq[qnum];
- int err;
+ int err, qsize = virtqueue_get_vring_size(sq->vq);
- /* Free up any pending old buffers before queueing new ones. */
- free_old_xmit_skbs(sq);
+ virtqueue_disable_cb(sq->vq);
/* Try to transmit */
err = xmit_skb(sq, sk...
2014 Oct 14
4
[PATCH RFC] virtio_net: enable tx interrupt
...outbuf(sq->vq, sq->sg, num_sg, skb,
+ GFP_ATOMIC);
}
static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
@@ -910,10 +950,9 @@ static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
struct virtnet_info *vi = netdev_priv(dev);
int qnum = skb_get_queue_mapping(skb);
struct send_queue *sq = &vi->sq[qnum];
- int err;
+ int err, qsize = virtqueue_get_vring_size(sq->vq);
- /* Free up any pending old buffers before queueing new ones. */
- free_old_xmit_skbs(sq);
+ virtqueue_disable_cb(sq->vq);
/* Try to transmit */
err = xmit_skb(sq, sk...
2014 Oct 15
1
[PATCH RFC v2 1/3] virtio_net: enable tx interrupt
...utbuf(sq->vq, sq->sg, num_sg, skb,
+ GFP_ATOMIC);
}
static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
@@ -919,12 +958,16 @@ static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
struct virtnet_info *vi = netdev_priv(dev);
int qnum = skb_get_queue_mapping(skb);
struct send_queue *sq = &vi->sq[qnum];
- int err;
+ int err, qsize = virtqueue_get_vring_size(sq->vq);
struct netdev_queue *txq = netdev_get_tx_queue(dev, qnum);
bool kick = !skb->xmit_more;
+ bool stopped;
+
+ virtqueue_disable_cb(sq->vq);
- /* Free up any pending old...
2014 Oct 15
1
[PATCH RFC v2 1/3] virtio_net: enable tx interrupt
...utbuf(sq->vq, sq->sg, num_sg, skb,
+ GFP_ATOMIC);
}
static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
@@ -919,12 +958,16 @@ static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
struct virtnet_info *vi = netdev_priv(dev);
int qnum = skb_get_queue_mapping(skb);
struct send_queue *sq = &vi->sq[qnum];
- int err;
+ int err, qsize = virtqueue_get_vring_size(sq->vq);
struct netdev_queue *txq = netdev_get_tx_queue(dev, qnum);
bool kick = !skb->xmit_more;
+ bool stopped;
+
+ virtqueue_disable_cb(sq->vq);
- /* Free up any pending old...
2018 Jan 12
7
[RFC PATCH net-next v2 0/2] Enable virtio to act as a backup for a passthru device
This patch series extends virtio_net to take over VF datapath by
simulating a transparent bond without creating any additional netdev.
I understand that there are some comments suggesting an alternate model
that is based on 3 driver model(virtio_net, VF driver, a new driver
virt_bond that acts as a master to virtio_net and VF).
Would like to get some feedback on the right way to solve the live
2014 Oct 15
0
[PATCH RFC] virtio_net: enable tx interrupt
..., skb,
> + GFP_ATOMIC);
> }
>
> static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
> @@ -910,10 +950,9 @@ static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
> struct virtnet_info *vi = netdev_priv(dev);
> int qnum = skb_get_queue_mapping(skb);
> struct send_queue *sq = &vi->sq[qnum];
> - int err;
> + int err, qsize = virtqueue_get_vring_size(sq->vq);
>
> - /* Free up any pending old buffers before queueing new ones. */
> - free_old_xmit_skbs(sq);
I think we'd better keep this. Since it may the t...
2014 Oct 15
0
[RFC PATCH net-next 5/6] virtio-net: enable tx interrupt
...->len) + 1;
> }
> +
> return virtqueue_add_outbuf(sq->vq, sq->sg, num_sg, skb, GFP_ATOMIC);
> }
>
> @@ -925,10 +961,11 @@ static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
> struct virtnet_info *vi = netdev_priv(dev);
> int qnum = skb_get_queue_mapping(skb);
> struct send_queue *sq = &vi->sq[qnum];
> - int err;
> + int err, qsize = virtqueue_get_vring_size(sq->vq);
>
> + virtqueue_disable_cb(sq->vq);
> /* Free up any pending old buffers before queueing new ones. */
> - free_old_xmit_skbs(sq);
> + free_ol...
2014 Oct 14
1
[PATCH net-next RFC 0/3] virtio-net: Conditionally enable tx interrupt
...b(sq->vq);
- sent += free_old_xmit_skbs(sq, budget - sent);
+ sent += free_old_xmit_skbs(txq, sq, budget - sent);
if (sent < budget) {
r = virtqueue_enable_cb_prepare(sq->vq);
@@ -951,6 +956,9 @@ static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
int qnum = skb_get_queue_mapping(skb);
struct send_queue *sq = &vi->sq[qnum];
int err, qsize = virtqueue_get_vring_size(sq->vq);
+ struct netdev_queue *txq = netdev_get_tx_queue(dev, qnum);
+ bool kick = !skb->xmit_more || netif_xmit_stopped(txq);
+ unsigned int bytes = skb->len;
virtqueue_disable_cb(sq->...
2014 Oct 14
1
[PATCH net-next RFC 0/3] virtio-net: Conditionally enable tx interrupt
...b(sq->vq);
- sent += free_old_xmit_skbs(sq, budget - sent);
+ sent += free_old_xmit_skbs(txq, sq, budget - sent);
if (sent < budget) {
r = virtqueue_enable_cb_prepare(sq->vq);
@@ -951,6 +956,9 @@ static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
int qnum = skb_get_queue_mapping(skb);
struct send_queue *sq = &vi->sq[qnum];
int err, qsize = virtqueue_get_vring_size(sq->vq);
+ struct netdev_queue *txq = netdev_get_tx_queue(dev, qnum);
+ bool kick = !skb->xmit_more || netif_xmit_stopped(txq);
+ unsigned int bytes = skb->len;
virtqueue_disable_cb(sq->...
2014 Oct 14
0
[PATCH net-next RFC 3/3] virtio-net: conditionally enable tx interrupt
...rue;
> +
> + return false;
> }
>
> static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
> @@ -916,13 +992,15 @@ static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
> struct virtnet_info *vi = netdev_priv(dev);
> int qnum = skb_get_queue_mapping(skb);
> struct send_queue *sq = &vi->sq[qnum];
> - int err;
> + bool urgent = virtnet_skb_needs_intr(skb);
> + int err, qsize = virtqueue_get_vring_size(sq->vq);
>
> + virtqueue_disable_cb_urgent(sq->vq);
> /* Free up any pending old buffers before queueing n...
2017 Dec 19
5
[RFC PATCH] virtio_net: Extend virtio to use VF datapath when available
...tats->tx_bytes += len;
+ u64_stats_update_end(&pcpu_stats->syncp);
+ } else {
+ this_cpu_inc(vi->vf_stats->tx_dropped);
+ }
+
+ return rc;
+}
+
static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct virtnet_info *vi = netdev_priv(dev);
int qnum = skb_get_queue_mapping(skb);
struct send_queue *sq = &vi->sq[qnum];
+ struct net_device *vf_netdev;
int err;
struct netdev_queue *txq = netdev_get_tx_queue(dev, qnum);
bool kick = !skb->xmit_more;
bool use_napi = sq->napi.weight;
+ /* if VF is present and up then redirect packets
+ * called with...