search for: __skb_queue_tail

...equeue(&netbk->rx_queue)) != NULL) { + unsigned int ring_slots_required; vif = netdev_priv(skb->dev); - nr_frags = skb_shinfo(skb)->nr_frags; sco = (struct skb_cb_overlay *)skb->cb; - sco->meta_slots_used = netbk_gop_skb(skb, &npo); - - count += nr_frags + 1; - __skb_queue_tail(&rxq, skb); + ring_slots_required = xen_netbk_count_skb_slots(vif, skb); - /* Filled the batch queue? */ - /* XXX FIXME: RX path dependent on MAX_SKB_FRAGS */ - if (count + MAX_SKB_FRAGS >= XEN_NETIF_RX_RING_SIZE) + if (count + ring_slots_required >= XEN_NETIF_RX_RING_SIZE) { + s...

From: Jason Wang <jasowang at redhat.com> Date: Wed, 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 i...

From: Jason Wang <jasowang at redhat.com> Date: Wed, 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 i...

...*)sch->data; + + q->counter ++; + + DPRINTK("enqueue: Q%X:%X gap=%d counter=%d wait=%d len=%d\n", + sch->handle >> 16, sch->handle & 0xffff, + q->gap, q->counter, q->wait, skb->len); + + /* do we have room? */ + if (sch->q.qlen < q->limit) { + __skb_queue_tail(&sch->q, skb); /* autoinc qlen */ + sch->stats.bytes += skb->len; + sch->stats.packets++; + + return NET_XMIT_SUCCESS; + } + + sch->stats.drops++; + kfree_skb(skb); + + return NET_XMIT_DROP; +} + +static struct sk_buff *ooo_dequeue(struct Qdisc *sch) +{ + struct ooo_sched_data...

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 -+%

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 -+%

...ad the sch_gred.c in net/sched/. In the function gred_enqueue(), at first it will find the VQ(q) according to the lower four bits of the skb->tc_index, then some parameters of the q is modified, such as q->packetsin and q->bytesin. At last the packet was put into the physical Queue using __skb_queue_tail(). When dequeue the packet, only the function __skb_dequeue() is called, and the VQ parameters are modified. Then the packets from all VQS will enter and store in the physical queue (sch->q), and be dequeued from there. HOW does the Gred schedule packets of differnet priorities? Thanks, ___...

Hi,All I setup traffic control configuration with HTB this way: 1: root HTB qdisc | 1:1 HTB class rate 1024kbit | /-----+-----+-----+------+-----\ 1:10 1:20 1:30 1:40 1:50 1:60 EF AF41 AF31 AF21 AF11 BE and alloct different bandwidth to these PHBs(queues).So which tool would I use to generate these packets at the same to for

Hi, I ran into an issue where netback driver is crashing with BUG_ON(npo.meta_prod > ARRAY_SIZE(netbk->meta)). It is happening in Intel 10Gbps network when larger mtu values are used. The problem seems to be the way the slots are counted. After applying this patch things ran fine in my environment. I request to validate my changes. Thanks Siva

...} +static void tun_rx_batched(struct tun_file *tfile, struct sk_buff *skb, + int more) +{ + struct sk_buff_head *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)))...

...n_file *tfile, struct sk_buff *skb, + int more) +{ + struct sk_buff_head *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); + 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_qu...

.../drivers/net/xen-netfront.c index d7c8a98..6e5d4c0 100644 --- a/drivers/net/xen-netfront.c +++ b/drivers/net/xen-netfront.c @@ -275,7 +275,7 @@ no_skb: break; } - skb_shinfo(skb)->frags[0].page = page; + __skb_fill_page_desc(skb, 0, page, 0, 0); skb_shinfo(skb)->nr_frags = 1; __skb_queue_tail(&np->rx_batch, skb); } @@ -309,8 +309,8 @@ no_skb: BUG_ON((signed short)ref < 0); np->grant_rx_ref[id] = ref; - pfn = page_to_pfn(skb_shinfo(skb)->frags[0].page); - vaddr = page_address(skb_shinfo(skb)->frags[0].page); + pfn = page_to_pfn(skb_frag_page(&skb_shinf...

...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); + local_bh_enable(); + } +} + /* Get packet from user space buffer */...

...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); + local_bh_enable(); + } +} + /* Get packet from user space buffer */...

hello, this is my new qdisc patch, when i recompile the kernel with this patch i dn''nt succeed please look at it and if there are any mistakes plesease send me a mail thanks in advance ___________________________________________________________ Do You Yahoo!? -- Une adresse @yahoo.fr gratuite et en français ! Yahoo! Mail : http://fr.mail.yahoo.com

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 -+%

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 -+%

...ll */ + if (q->loss >= net_random()) { + sch->stats.drops++; + return 0; /* lie about loss so TCP doesn''t know */ + } + + if (q->qnormal.qlen < sch->dev->tx_queue_len) { + PSCHED_GET_TIME(cb->time_to_send); + PSCHED_TADD(cb->time_to_send, q->latency); + + __skb_queue_tail(&q->qnormal, skb); + sch->q.qlen++; + sch->stats.bytes += skb->len; + sch->stats.packets++; + return 0; + } + + sch->stats.drops++; + kfree_skb(skb); + return NET_XMIT_DROP; +} + +/* Requeue packets but don''t change time stamp */ +static int netem_requeue(struct s...

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 -+%

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 -+%