[NET]: Separate two usages of netdev_max_backlog.
Separate out the two uses of netdev_max_backlog. One controls the upper bound on packets processed per softirq, the new name for this is netdev_budget; the other controls the limit on packets queued via netif_rx. Increase the max_backlog default to account for faster processors. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -243,6 +243,7 @@ enum
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NET_CORE_MOD_CONG=16,
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NET_CORE_DEV_WEIGHT=17,
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NET_CORE_SOMAXCONN=18,
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NET_CORE_BUDGET=19,
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};
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/* /proc/sys/net/ethernet */
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@ -1346,7 +1346,8 @@ out:
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Receiver routines
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=======================================================================*/
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int netdev_max_backlog = 300;
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int netdev_max_backlog = 1000;
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int netdev_budget = 300;
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int weight_p = 64; /* old backlog weight */
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DEFINE_PER_CPU(struct netif_rx_stats, netdev_rx_stat) = { 0, };
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@ -1695,8 +1696,7 @@ static void net_rx_action(struct softirq_action *h)
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{
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struct softnet_data *queue = &__get_cpu_var(softnet_data);
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unsigned long start_time = jiffies;
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int budget = netdev_max_backlog;
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int budget = netdev_budget;
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local_irq_disable();
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@ -13,6 +13,7 @@
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#ifdef CONFIG_SYSCTL
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extern int netdev_max_backlog;
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extern int netdev_budget;
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extern int weight_p;
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extern int net_msg_cost;
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extern int net_msg_burst;
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@ -124,6 +125,14 @@ ctl_table core_table[] = {
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.mode = 0644,
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.proc_handler = &proc_dointvec
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},
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{
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.ctl_name = NET_CORE_BUDGET,
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.procname = "netdev_budget",
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.data = &netdev_budget,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = &proc_dointvec
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},
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{ .ctl_name = 0 }
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};
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