diff options
Diffstat (limited to 'net/core/dev.c')
-rw-r--r-- | net/core/dev.c | 21 |
1 files changed, 2 insertions, 19 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index 3156df699f01..1a64508e527f 100644 --- a/net/core/dev.c +++ b/net/core/dev.c | |||
@@ -198,7 +198,7 @@ static struct notifier_block *netdev_chain; | |||
198 | * Device drivers call our routines to queue packets here. We empty the | 198 | * Device drivers call our routines to queue packets here. We empty the |
199 | * queue in the local softnet handler. | 199 | * queue in the local softnet handler. |
200 | */ | 200 | */ |
201 | DEFINE_PER_CPU(struct softnet_data, softnet_data) = { 0, }; | 201 | DEFINE_PER_CPU(struct softnet_data, softnet_data) = { NULL }; |
202 | 202 | ||
203 | #ifdef CONFIG_SYSFS | 203 | #ifdef CONFIG_SYSFS |
204 | extern int netdev_sysfs_init(void); | 204 | extern int netdev_sysfs_init(void); |
@@ -1372,7 +1372,6 @@ DEFINE_PER_CPU(struct netif_rx_stats, netdev_rx_stat) = { 0, }; | |||
1372 | 1372 | ||
1373 | int netif_rx(struct sk_buff *skb) | 1373 | int netif_rx(struct sk_buff *skb) |
1374 | { | 1374 | { |
1375 | int this_cpu; | ||
1376 | struct softnet_data *queue; | 1375 | struct softnet_data *queue; |
1377 | unsigned long flags; | 1376 | unsigned long flags; |
1378 | 1377 | ||
@@ -1388,15 +1387,11 @@ int netif_rx(struct sk_buff *skb) | |||
1388 | * short when CPU is congested, but is still operating. | 1387 | * short when CPU is congested, but is still operating. |
1389 | */ | 1388 | */ |
1390 | local_irq_save(flags); | 1389 | local_irq_save(flags); |
1391 | this_cpu = smp_processor_id(); | ||
1392 | queue = &__get_cpu_var(softnet_data); | 1390 | queue = &__get_cpu_var(softnet_data); |
1393 | 1391 | ||
1394 | __get_cpu_var(netdev_rx_stat).total++; | 1392 | __get_cpu_var(netdev_rx_stat).total++; |
1395 | if (queue->input_pkt_queue.qlen <= netdev_max_backlog) { | 1393 | if (queue->input_pkt_queue.qlen <= netdev_max_backlog) { |
1396 | if (queue->input_pkt_queue.qlen) { | 1394 | if (queue->input_pkt_queue.qlen) { |
1397 | if (queue->throttle) | ||
1398 | goto drop; | ||
1399 | |||
1400 | enqueue: | 1395 | enqueue: |
1401 | dev_hold(skb->dev); | 1396 | dev_hold(skb->dev); |
1402 | __skb_queue_tail(&queue->input_pkt_queue, skb); | 1397 | __skb_queue_tail(&queue->input_pkt_queue, skb); |
@@ -1404,19 +1399,10 @@ enqueue: | |||
1404 | return NET_RX_SUCCESS; | 1399 | return NET_RX_SUCCESS; |
1405 | } | 1400 | } |
1406 | 1401 | ||
1407 | if (queue->throttle) | ||
1408 | queue->throttle = 0; | ||
1409 | |||
1410 | netif_rx_schedule(&queue->backlog_dev); | 1402 | netif_rx_schedule(&queue->backlog_dev); |
1411 | goto enqueue; | 1403 | goto enqueue; |
1412 | } | 1404 | } |
1413 | 1405 | ||
1414 | if (!queue->throttle) { | ||
1415 | queue->throttle = 1; | ||
1416 | __get_cpu_var(netdev_rx_stat).throttled++; | ||
1417 | } | ||
1418 | |||
1419 | drop: | ||
1420 | __get_cpu_var(netdev_rx_stat).dropped++; | 1406 | __get_cpu_var(netdev_rx_stat).dropped++; |
1421 | local_irq_restore(flags); | 1407 | local_irq_restore(flags); |
1422 | 1408 | ||
@@ -1701,8 +1687,6 @@ job_done: | |||
1701 | smp_mb__before_clear_bit(); | 1687 | smp_mb__before_clear_bit(); |
1702 | netif_poll_enable(backlog_dev); | 1688 | netif_poll_enable(backlog_dev); |
1703 | 1689 | ||
1704 | if (queue->throttle) | ||
1705 | queue->throttle = 0; | ||
1706 | local_irq_enable(); | 1690 | local_irq_enable(); |
1707 | return 0; | 1691 | return 0; |
1708 | } | 1692 | } |
@@ -1976,7 +1960,7 @@ static int softnet_seq_show(struct seq_file *seq, void *v) | |||
1976 | struct netif_rx_stats *s = v; | 1960 | struct netif_rx_stats *s = v; |
1977 | 1961 | ||
1978 | seq_printf(seq, "%08x %08x %08x %08x %08x %08x %08x %08x %08x\n", | 1962 | seq_printf(seq, "%08x %08x %08x %08x %08x %08x %08x %08x %08x\n", |
1979 | s->total, s->dropped, s->time_squeeze, s->throttled, | 1963 | s->total, s->dropped, s->time_squeeze, 0, |
1980 | 0, 0, 0, 0, /* was fastroute */ | 1964 | 0, 0, 0, 0, /* was fastroute */ |
1981 | s->cpu_collision ); | 1965 | s->cpu_collision ); |
1982 | return 0; | 1966 | return 0; |
@@ -3220,7 +3204,6 @@ static int __init net_dev_init(void) | |||
3220 | 3204 | ||
3221 | queue = &per_cpu(softnet_data, i); | 3205 | queue = &per_cpu(softnet_data, i); |
3222 | skb_queue_head_init(&queue->input_pkt_queue); | 3206 | skb_queue_head_init(&queue->input_pkt_queue); |
3223 | queue->throttle = 0; | ||
3224 | queue->completion_queue = NULL; | 3207 | queue->completion_queue = NULL; |
3225 | INIT_LIST_HEAD(&queue->poll_list); | 3208 | INIT_LIST_HEAD(&queue->poll_list); |
3226 | set_bit(__LINK_STATE_START, &queue->backlog_dev.state); | 3209 | set_bit(__LINK_STATE_START, &queue->backlog_dev.state); |