Displaying 20 results from an estimated 145 matches for "netdev_queue".
2018 Dec 06
7
[PATCH RFC 1/2] virtio-net: bql support
...t; +++ b/drivers/net/virtio_net.c
> @@ -1325,7 +1325,8 @@ static int virtnet_receive(struct receive_queue *rq, int budget,
> return stats.packets;
> }
>
> -static void free_old_xmit_skbs(struct send_queue *sq)
> +static void free_old_xmit_skbs(struct send_queue *sq, struct netdev_queue *txq,
> + bool use_napi)
> {
> struct sk_buff *skb;
> unsigned int len;
> @@ -1347,6 +1348,9 @@ static void free_old_xmit_skbs(struct send_queue *sq)
> if (!packets)
> return;
>
> + if (use_napi)
> + netdev_tx_completed_queue(txq, packets, b...
2018 Dec 06
7
[PATCH RFC 1/2] virtio-net: bql support
...t; +++ b/drivers/net/virtio_net.c
> @@ -1325,7 +1325,8 @@ static int virtnet_receive(struct receive_queue *rq, int budget,
> return stats.packets;
> }
>
> -static void free_old_xmit_skbs(struct send_queue *sq)
> +static void free_old_xmit_skbs(struct send_queue *sq, struct netdev_queue *txq,
> + bool use_napi)
> {
> struct sk_buff *skb;
> unsigned int len;
> @@ -1347,6 +1348,9 @@ static void free_old_xmit_skbs(struct send_queue *sq)
> if (!packets)
> return;
>
> + if (use_napi)
> + netdev_tx_completed_queue(txq, packets, b...
2018 Dec 05
3
[PATCH RFC 0/2] virtio-net: interrupt related improvements
Now that we have brought the virtio overhead way down with a fast packed
ring implementation, we seem to be actually observing TCP drops
indicative of bufferbloat. So let's try to enable TSQ. Note: it isn't
clear that the default pacing is great for the virt usecase. It's worth
trying to play with sk_pacing_shift_update to see what happens.
For this reason, and for a more important
2014 Oct 20
0
[PATCH RFC v3 2/3] virtio_net: bql
...---
drivers/net/virtio_net.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 14f4cda..b83d39d 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -227,6 +227,7 @@ static unsigned int free_old_xmit_skbs(struct netdev_queue *txq,
struct virtnet_info *vi = sq->vq->vdev->priv;
struct virtnet_stats *stats = this_cpu_ptr(vi->stats);
unsigned int packets = 0;
+ unsigned int bytes = 0;
while (packets < budget &&
(skb = virtqueue_get_buf(sq->vq, &len)) != NULL) {
@@ -234,6 +23...
2014 Oct 20
0
[PATCH RFC v3 2/3] virtio_net: bql
...---
drivers/net/virtio_net.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 14f4cda..b83d39d 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -227,6 +227,7 @@ static unsigned int free_old_xmit_skbs(struct netdev_queue *txq,
struct virtnet_info *vi = sq->vq->vdev->priv;
struct virtnet_stats *stats = this_cpu_ptr(vi->stats);
unsigned int packets = 0;
+ unsigned int bytes = 0;
while (packets < budget &&
(skb = virtqueue_get_buf(sq->vq, &len)) != NULL) {
@@ -234,6 +23...
2018 Dec 27
2
[PATCH RFC 1/2] virtio-net: bql support
...>>> @@ -1325,7 +1325,8 @@ static int virtnet_receive(struct receive_queue *rq, int budget,
>>> return stats.packets;
>>> }
>>> -static void free_old_xmit_skbs(struct send_queue *sq)
>>> +static void free_old_xmit_skbs(struct send_queue *sq, struct netdev_queue *txq,
>>> + bool use_napi)
>>> {
>>> struct sk_buff *skb;
>>> unsigned int len;
>>> @@ -1347,6 +1348,9 @@ static void free_old_xmit_skbs(struct send_queue *sq)
>>> if (!packets)
>>> return;
>>> + if...
2018 Dec 27
2
[PATCH RFC 1/2] virtio-net: bql support
...>>> @@ -1325,7 +1325,8 @@ static int virtnet_receive(struct receive_queue *rq, int budget,
>>> return stats.packets;
>>> }
>>> -static void free_old_xmit_skbs(struct send_queue *sq)
>>> +static void free_old_xmit_skbs(struct send_queue *sq, struct netdev_queue *txq,
>>> + bool use_napi)
>>> {
>>> struct sk_buff *skb;
>>> unsigned int len;
>>> @@ -1347,6 +1348,9 @@ static void free_old_xmit_skbs(struct send_queue *sq)
>>> if (!packets)
>>> return;
>>> + if...
2018 Dec 27
2
[PATCH RFC 1/2] virtio-net: bql support
...>>> @@ -1325,7 +1325,8 @@ static int virtnet_receive(struct receive_queue *rq, int budget,
>>> return stats.packets;
>>> }
>>> -static void free_old_xmit_skbs(struct send_queue *sq)
>>> +static void free_old_xmit_skbs(struct send_queue *sq, struct netdev_queue *txq,
>>> + bool use_napi)
>>> {
>>> struct sk_buff *skb;
>>> unsigned int len;
>>> @@ -1347,6 +1348,9 @@ static void free_old_xmit_skbs(struct send_queue *sq)
>>> if (!packets)
>>> return;
>>> + if...
2018 Dec 27
2
[PATCH RFC 1/2] virtio-net: bql support
...>>> @@ -1325,7 +1325,8 @@ static int virtnet_receive(struct receive_queue *rq, int budget,
>>> return stats.packets;
>>> }
>>> -static void free_old_xmit_skbs(struct send_queue *sq)
>>> +static void free_old_xmit_skbs(struct send_queue *sq, struct netdev_queue *txq,
>>> + bool use_napi)
>>> {
>>> struct sk_buff *skb;
>>> unsigned int len;
>>> @@ -1347,6 +1348,9 @@ static void free_old_xmit_skbs(struct send_queue *sq)
>>> if (!packets)
>>> return;
>>> + if...
2018 Dec 05
0
[PATCH RFC 1/2] virtio-net: bql support
...0644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -1325,7 +1325,8 @@ static int virtnet_receive(struct receive_queue *rq, int budget,
return stats.packets;
}
-static void free_old_xmit_skbs(struct send_queue *sq)
+static void free_old_xmit_skbs(struct send_queue *sq, struct netdev_queue *txq,
+ bool use_napi)
{
struct sk_buff *skb;
unsigned int len;
@@ -1347,6 +1348,9 @@ static void free_old_xmit_skbs(struct send_queue *sq)
if (!packets)
return;
+ if (use_napi)
+ netdev_tx_completed_queue(txq, packets, bytes);
+
u64_stats_update_begin(&sq->stats.sync...
2014 Oct 15
1
[PATCH RFC v2 2/3] virtio_net: bql
...644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -219,13 +219,15 @@ static struct page *get_a_page(struct receive_queue *rq, gfp_t gfp_mask)
return p;
}
-static unsigned int free_old_xmit_skbs(struct send_queue *sq, int budget)
+static unsigned int free_old_xmit_skbs(struct netdev_queue *txq,
+ struct send_queue *sq, int budget)
{
struct sk_buff *skb;
unsigned int len;
struct virtnet_info *vi = sq->vq->vdev->priv;
struct virtnet_stats *stats = this_cpu_ptr(vi->stats);
unsigned int packets = 0;
+ unsigned int bytes = 0;
while (packets < budge...
2014 Oct 15
1
[PATCH RFC v2 2/3] virtio_net: bql
...644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -219,13 +219,15 @@ static struct page *get_a_page(struct receive_queue *rq, gfp_t gfp_mask)
return p;
}
-static unsigned int free_old_xmit_skbs(struct send_queue *sq, int budget)
+static unsigned int free_old_xmit_skbs(struct netdev_queue *txq,
+ struct send_queue *sq, int budget)
{
struct sk_buff *skb;
unsigned int len;
struct virtnet_info *vi = sq->vq->vdev->priv;
struct virtnet_stats *stats = this_cpu_ptr(vi->stats);
unsigned int packets = 0;
+ unsigned int bytes = 0;
while (packets < budge...
2019 Jan 02
2
[PATCH RFC 1/2] virtio-net: bql support
...static int virtnet_receive(struct receive_queue *rq, int budget,
>>>>> return stats.packets;
>>>>> }
>>>>> -static void free_old_xmit_skbs(struct send_queue *sq)
>>>>> +static void free_old_xmit_skbs(struct send_queue *sq, struct netdev_queue *txq,
>>>>> + bool use_napi)
>>>>> {
>>>>> struct sk_buff *skb;
>>>>> unsigned int len;
>>>>> @@ -1347,6 +1348,9 @@ static void free_old_xmit_skbs(struct send_queue *sq)
>>>>> if (!...
2019 Jan 02
2
[PATCH RFC 1/2] virtio-net: bql support
...static int virtnet_receive(struct receive_queue *rq, int budget,
>>>>> return stats.packets;
>>>>> }
>>>>> -static void free_old_xmit_skbs(struct send_queue *sq)
>>>>> +static void free_old_xmit_skbs(struct send_queue *sq, struct netdev_queue *txq,
>>>>> + bool use_napi)
>>>>> {
>>>>> struct sk_buff *skb;
>>>>> unsigned int len;
>>>>> @@ -1347,6 +1348,9 @@ static void free_old_xmit_skbs(struct send_queue *sq)
>>>>> if (!...
2018 Dec 26
0
[PATCH RFC 1/2] virtio-net: bql support
...net/virtio_net.c
> > @@ -1325,7 +1325,8 @@ static int virtnet_receive(struct receive_queue *rq, int budget,
> > return stats.packets;
> > }
> > -static void free_old_xmit_skbs(struct send_queue *sq)
> > +static void free_old_xmit_skbs(struct send_queue *sq, struct netdev_queue *txq,
> > + bool use_napi)
> > {
> > struct sk_buff *skb;
> > unsigned int len;
> > @@ -1347,6 +1348,9 @@ static void free_old_xmit_skbs(struct send_queue *sq)
> > if (!packets)
> > return;
> > + if (use_napi)
> > + netd...
2018 Jan 23
2
[RFC PATCH net-next v2 2/2] virtio_net: Extend virtio to use VF datapath when available
...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 rcu_read_lock_bh
> + */
> + vf_netdev = rcu_dereference_bh(vi->vf_netdev);
>...
2018 Jan 23
2
[RFC PATCH net-next v2 2/2] virtio_net: Extend virtio to use VF datapath when available
...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 rcu_read_lock_bh
> + */
> + vf_netdev = rcu_dereference_bh(vi->vf_netdev);
>...
2018 Dec 26
0
[PATCH RFC 1/2] virtio-net: bql support
...net/virtio_net.c
> > @@ -1325,7 +1325,8 @@ static int virtnet_receive(struct receive_queue *rq, int budget,
> > return stats.packets;
> > }
> > -static void free_old_xmit_skbs(struct send_queue *sq)
> > +static void free_old_xmit_skbs(struct send_queue *sq, struct netdev_queue *txq,
> > + bool use_napi)
> > {
> > struct sk_buff *skb;
> > unsigned int len;
> > @@ -1347,6 +1348,9 @@ static void free_old_xmit_skbs(struct send_queue *sq)
> > if (!packets)
> > return;
> > + if (use_napi)
> > + netd...
2018 Dec 26
0
[PATCH RFC 1/2] virtio-net: bql support
...net/virtio_net.c
> > @@ -1325,7 +1325,8 @@ static int virtnet_receive(struct receive_queue *rq, int budget,
> > return stats.packets;
> > }
> > -static void free_old_xmit_skbs(struct send_queue *sq)
> > +static void free_old_xmit_skbs(struct send_queue *sq, struct netdev_queue *txq,
> > + bool use_napi)
> > {
> > struct sk_buff *skb;
> > unsigned int len;
> > @@ -1347,6 +1348,9 @@ static void free_old_xmit_skbs(struct send_queue *sq)
> > if (!packets)
> > return;
> > + if (use_napi)
> > + netd...
2014 Oct 15
6
[PATCH] virtio_net: fix use after free
...t.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_xmit(struct sk_buff *skb, struct net_device *dev)
}
}
- if (__netif_subqueue_sto...