Displaying 16 results from an estimated 16 matches for "skb_queue_splice_tail_init".
2016 Dec 29
1
[PATCH net-next V2 3/3] tun: rx batching
...28 Dec 2016 16:09:31 +0800
> + spin_lock(&queue->lock);
> + qlen = skb_queue_len(queue);
> + if (qlen > rx_batched)
> + goto drop;
> + __skb_queue_tail(queue, skb);
> + if (!more || qlen + 1 > rx_batched) {
> + __skb_queue_head_init(&process_queue);
> + skb_queue_splice_tail_init(queue, &process_queue);
> + rcv = true;
> + }
> + spin_unlock(&queue->lock);
Since you always clear the 'queue' when you insert the skb that hits
the limit, I don't see how the "goto drop" path can be possibly taken.
2016 Dec 29
1
[PATCH net-next V2 3/3] tun: rx batching
...28 Dec 2016 16:09:31 +0800
> + spin_lock(&queue->lock);
> + qlen = skb_queue_len(queue);
> + if (qlen > rx_batched)
> + goto drop;
> + __skb_queue_tail(queue, skb);
> + if (!more || qlen + 1 > rx_batched) {
> + __skb_queue_head_init(&process_queue);
> + skb_queue_splice_tail_init(queue, &process_queue);
> + rcv = true;
> + }
> + spin_unlock(&queue->lock);
Since you always clear the 'queue' when you insert the skb that hits
the limit, I don't see how the "goto drop" path can be possibly taken.
2016 Dec 28
7
[PATCH net-next V2 0/3] vhost net tx batching
Hi:
This series tries to implement tx batching support for vhost. This was
done by using MSG_MORE as a hint for under layer socket. The backend
(e.g tap) can then batch the packets temporarily in a list and
submit it all once the number of bacthed exceeds a limitation.
Tests shows obvious improvement on guest pktgen over over
mlx4(noqueue) on host:
Mpps -+%
2016 Dec 28
7
[PATCH net-next V2 0/3] vhost net tx batching
Hi:
This series tries to implement tx batching support for vhost. This was
done by using MSG_MORE as a hint for under layer socket. The backend
(e.g tap) can then batch the packets temporarily in a list and
submit it all once the number of bacthed exceeds a limitation.
Tests shows obvious improvement on guest pktgen over over
mlx4(noqueue) on host:
Mpps -+%
2016 Dec 30
0
[PATCH net-next V3 3/3] tun: rx batching
...ad *queue = &tfile->sk.sk_write_queue;
+ struct sk_buff_head process_queue;
+ int qlen;
+ bool rcv = false;
+
+ spin_lock(&queue->lock);
+ qlen = skb_queue_len(queue);
+ __skb_queue_tail(queue, skb);
+ if (!more || qlen == rx_batched) {
+ __skb_queue_head_init(&process_queue);
+ skb_queue_splice_tail_init(queue, &process_queue);
+ rcv = true;
+ }
+ spin_unlock(&queue->lock);
+
+ if (rcv) {
+ local_bh_disable();
+ while ((skb = __skb_dequeue(&process_queue)))
+ netif_receive_skb(skb);
+ local_bh_enable();
+ }
+}
+
/* Get packet from user space buffer */
static ssize_t tun_get_u...
2016 Dec 28
0
[PATCH net-next V2 3/3] tun: rx batching
...struct sk_buff_head process_queue;
+ int qlen;
+ bool rcv = false;
+
+ spin_lock(&queue->lock);
+ qlen = skb_queue_len(queue);
+ if (qlen > rx_batched)
+ goto drop;
+ __skb_queue_tail(queue, skb);
+ if (!more || qlen + 1 > rx_batched) {
+ __skb_queue_head_init(&process_queue);
+ skb_queue_splice_tail_init(queue, &process_queue);
+ rcv = true;
+ }
+ spin_unlock(&queue->lock);
+
+ if (rcv) {
+ local_bh_disable();
+ while ((skb = __skb_dequeue(&process_queue)))
+ netif_receive_skb(skb);
+ local_bh_enable();
+ }
+
+ return 0;
+drop:
+ spin_unlock(&queue->lock);
+ kfree_skb(sk...
2017 Jan 18
0
[PATCH net-next V5 3/3] tun: rx batching
...false;
+
+ if (!rx_batched || (!more && skb_queue_empty(queue))) {
+ local_bh_disable();
+ netif_receive_skb(skb);
+ local_bh_enable();
+ return;
+ }
+
+ spin_lock(&queue->lock);
+ if (!more || skb_queue_len(queue) == rx_batched) {
+ __skb_queue_head_init(&process_queue);
+ skb_queue_splice_tail_init(queue, &process_queue);
+ rcv = true;
+ } else {
+ __skb_queue_tail(queue, skb);
+ }
+ spin_unlock(&queue->lock);
+
+ if (rcv) {
+ struct sk_buff *nskb;
+
+ local_bh_disable();
+ while ((nskb = __skb_dequeue(&process_queue)))
+ netif_receive_skb(nskb);
+ netif_receive_skb(skb...
2017 Jan 06
0
[PATCH V4 net-next 3/3] tun: rx batching
...false;
+
+ if (!rx_batched || (!more && skb_queue_empty(queue))) {
+ local_bh_disable();
+ netif_receive_skb(skb);
+ local_bh_enable();
+ return;
+ }
+
+ spin_lock(&queue->lock);
+ if (!more || skb_queue_len(queue) == rx_batched) {
+ __skb_queue_head_init(&process_queue);
+ skb_queue_splice_tail_init(queue, &process_queue);
+ rcv = true;
+ } else {
+ __skb_queue_tail(queue, skb);
+ }
+ spin_unlock(&queue->lock);
+
+ if (rcv) {
+ struct sk_buff *nskb;
+ local_bh_disable();
+ while ((nskb = __skb_dequeue(&process_queue)))
+ netif_receive_skb(nskb);
+ netif_receive_skb(skb);...
2017 Jan 06
5
[PATCH V4 net-next 0/3] vhost_net tx batching
Hi:
This series tries to implement tx batching support for vhost. This was
done by using MSG_MORE as a hint for under layer socket. The backend
(e.g tap) can then batch the packets temporarily in a list and
submit it all once the number of bacthed exceeds a limitation.
Tests shows obvious improvement on guest pktgen over over
mlx4(noqueue) on host:
Mpps -+%
2017 Jan 06
5
[PATCH V4 net-next 0/3] vhost_net tx batching
Hi:
This series tries to implement tx batching support for vhost. This was
done by using MSG_MORE as a hint for under layer socket. The backend
(e.g tap) can then batch the packets temporarily in a list and
submit it all once the number of bacthed exceeds a limitation.
Tests shows obvious improvement on guest pktgen over over
mlx4(noqueue) on host:
Mpps -+%
2017 Jan 18
7
[PATCH net-next V5 0/3] vhost_net tx batching
Hi:
This series tries to implement tx batching support for vhost. This was
done by using MSG_MORE as a hint for under layer socket. The backend
(e.g tap) can then batch the packets temporarily in a list and
submit it all once the number of bacthed exceeds a limitation.
Tests shows obvious improvement on guest pktgen over over
mlx4(noqueue) on host:
Mpps -+%
2017 Jan 18
7
[PATCH net-next V5 0/3] vhost_net tx batching
Hi:
This series tries to implement tx batching support for vhost. This was
done by using MSG_MORE as a hint for under layer socket. The backend
(e.g tap) can then batch the packets temporarily in a list and
submit it all once the number of bacthed exceeds a limitation.
Tests shows obvious improvement on guest pktgen over over
mlx4(noqueue) on host:
Mpps -+%
2017 Jan 06
2
[PATCH V4 net-next 3/3] tun: rx batching
...b_queue_empty(queue))) {
> + local_bh_disable();
> + netif_receive_skb(skb);
> + local_bh_enable();
> + return;
> + }
> +
> + spin_lock(&queue->lock);
> + if (!more || skb_queue_len(queue) == rx_batched) {
> + __skb_queue_head_init(&process_queue);
> + skb_queue_splice_tail_init(queue, &process_queue);
> + rcv = true;
> + } else {
> + __skb_queue_tail(queue, skb);
> + }
> + spin_unlock(&queue->lock);
> +
> + if (rcv) {
> + struct sk_buff *nskb;
> + local_bh_disable();
> + while ((nskb = __skb_dequeue(&process_queue)))
>...
2017 Jan 06
2
[PATCH V4 net-next 3/3] tun: rx batching
...b_queue_empty(queue))) {
> + local_bh_disable();
> + netif_receive_skb(skb);
> + local_bh_enable();
> + return;
> + }
> +
> + spin_lock(&queue->lock);
> + if (!more || skb_queue_len(queue) == rx_batched) {
> + __skb_queue_head_init(&process_queue);
> + skb_queue_splice_tail_init(queue, &process_queue);
> + rcv = true;
> + } else {
> + __skb_queue_tail(queue, skb);
> + }
> + spin_unlock(&queue->lock);
> +
> + if (rcv) {
> + struct sk_buff *nskb;
> + local_bh_disable();
> + while ((nskb = __skb_dequeue(&process_queue)))
>...
2016 Dec 30
5
[PATCH net-next V3 0/3] vhost_net tx batching
Hi:
This series tries to implement tx batching support for vhost. This was
done by using MSG_MORE as a hint for under layer socket. The backend
(e.g tap) can then batch the packets temporarily in a list and
submit it all once the number of bacthed exceeds a limitation.
Tests shows obvious improvement on guest pktgen over over
mlx4(noqueue) on host:
Mpps -+%
2016 Dec 30
5
[PATCH net-next V3 0/3] vhost_net tx batching
Hi:
This series tries to implement tx batching support for vhost. This was
done by using MSG_MORE as a hint for under layer socket. The backend
(e.g tap) can then batch the packets temporarily in a list and
submit it all once the number of bacthed exceeds a limitation.
Tests shows obvious improvement on guest pktgen over over
mlx4(noqueue) on host:
Mpps -+%