On 7/6/15 1:05 PM, Eric Dumazet wrote:
Add multiqueue capabilities to ifb netdevice.
This removes last bottleneck for ingress when mq qdisc can be used
to shard load from multiple RX queues on physical device.
...
Signed-off-by: Eric Dumazet<[email protected]>
Cc: Alexei Starovoitov<[email protected]>
Cc: Jamal Hadi Salim<[email protected]>
Cc: John Fastabend<[email protected]>
---
drivers/net/ifb.c | 207 +++++++++++++++++++++++++-------------------
1 file changed, 120 insertions(+), 87 deletions(-)
...
-struct ifb_private {
+struct ifb_q_private {
...
-};
+} ____cacheline_aligned_in_smp;
...
+static int ifb_dev_init(struct net_device *dev)
+{
+ struct ifb_dev_private *dp = netdev_priv(dev);
+ struct ifb_q_private *txp;
+ int i;
+
+ txp = kcalloc(dev->num_tx_queues, sizeof(*txp), GFP_KERNEL);
...
static netdev_tx_t ifb_xmit(struct sk_buff *skb, struct net_device *dev)
{
- struct ifb_private *dp = netdev_priv(dev);
+ struct ifb_dev_private *dp = netdev_priv(dev);
u32 from = G_TC_FROM(skb->tc_verd);
+ struct ifb_q_private *txp = dp->tx_private + skb_get_queue_mapping(skb);
All makes sense. Nicely done!
Acked-by: Alexei Starovoitov <[email protected]>
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