Hi Krishna.
On Sun, Jul 22, 2007 at 02:35:25PM +0530, Krishna Kumar ([EMAIL PROTECTED])
wrote:
> diff -ruNp org/net/core/dev.c rev2/net/core/dev.c
> --- org/net/core/dev.c 2007-07-20 07:49:28.000000000 +0530
> +++ rev2/net/core/dev.c 2007-07-21 23:08:33.000000000 +0530
> @@ -875,6 +875,48 @@ void netdev_state_change(struct net_devi
> }
> }
>
> +/*
> + * dev_change_tx_batching - Enable or disable batching for a driver that
> + * supports batching.
> + */
> +int dev_change_tx_batching(struct net_device *dev, unsigned long
> new_batch_skb)
> +{
> + int ret;
> +
> + if (!dev->hard_start_xmit_batch) {
> + /* Driver doesn't support skb batching */
> + ret = -ENOTSUPP;
> + goto out;
> + }
> +
> + /* Handle invalid argument */
> + if (new_batch_skb < 0) {
> + ret = -EINVAL;
> + goto out;
> + }
> +
> + ret = 0;
> +
> + /* Check if new value is same as the current */
> + if (!!(dev->features & NETIF_F_BATCH_ON) == !!new_batch_skb)
> + goto out;
o_O
Scratched head for too long before understood what it means :)
> + spin_lock(&dev->queue_lock);
> + if (new_batch_skb) {
> + dev->features |= NETIF_F_BATCH_ON;
> + dev->tx_queue_len >>= 1;
> + } else {
> + if (!skb_queue_empty(&dev->skb_blist))
> + skb_queue_purge(&dev->skb_blist);
> + dev->features &= ~NETIF_F_BATCH_ON;
> + dev->tx_queue_len <<= 1;
> + }
> + spin_unlock(&dev->queue_lock);
Hmm, should this also stop interrupts?
--
Evgeniy Polyakov
-
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