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SubjectRe: [PATCH 3/3] drivers/net/ixgbe/ixgbe_main.c: get tx queue mapping specified in socket
On 12/15/2010 12:02 PM, Yu, Fenghua wrote:
> From: Fenghua Yu <fenghua.yu@intel.com>
>
> Instead of using calculated tx queue mapping, this patch selects tx queue mapping
> which is specified in socket.
>
> By doing this, tx queue mapping can be bigger than the number of cores and
> stressfully use multiqueue TSS. Or application can specify some of cores/queues
> to send packets and implement flexible load balance policies.
>
> Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
> Signed-off-by: Junchang Wang <junchangwang@gmail.com>
> Signed-off-by: Xinan Tang <xinan.tang@intel.com>
> ---
> drivers/net/ixgbe/ixgbe_main.c | 9 ++++++++-
> 1 files changed, 8 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
> index eee0b29..4d98928 100644
> --- a/drivers/net/ixgbe/ixgbe_main.c
> +++ b/drivers/net/ixgbe/ixgbe_main.c
> @@ -6255,7 +6255,14 @@ static int ixgbe_maybe_stop_tx(struct net_device *netdev,
> static u16 ixgbe_select_queue(struct net_device *dev, struct sk_buff *skb)
> {
> struct ixgbe_adapter *adapter = netdev_priv(dev);
> - int txq = smp_processor_id();
> + int txq;
> +
> + txq = sk_tx_queue_get(skb->sk);
> +
> + if (txq >= 0 && txq < dev->real_num_tx_queues)
> + return txq;
> +
> + txq = smp_processor_id();
> #ifdef IXGBE_FCOE
> __be16 protocol;
>

We are trying to remove stuff from select_queue not add it. I believe however you solve this problem should be generic and not specific to ixgbe.

Thanks,
John.


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